KEEFEKTIFAN SUPERVISI AKADEMIK OLEH KEPALA SEKOLAH DASAR NEGERI SE-KECAMATAN TALANG EMPAT BENGKULU TENGAH

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Ajeng Lentika Sari

2015-10-01

Full Text Available Penelitian ini bertujuan untuk mengetahui keefektifan supervisi akademik yang meliputi perencanaan, pelaksanaan, dan tindak lanjut, kesulitan yang muncul, dan upaya yang dilakukan oleh kepala sekolah untuk mengatasinya. Penelitian ini merupakan penelitian evaluatif dengan pendekatan kuantitatif. Hasil penelitian adalah sebagai berikut. (1 Perencanaan supervisi akademik pada kategori efektif. (2 Pelaksanaan supervisi akademik pada kategori efektif. (3 Tindak lanjut supervisi akademik pada kategori efektif. Secara umum supervisi akademik oleh kepala sekolah dasar negeri sekecamatan Talang Empat, Bengkulu Tengah efektif. (4 Kesulitan yang dihadapi adalah Kepala Sekolah yang kurang professional dan birokrasi yang rumit. (5 Upaya yang dilakukan untuk mengatasi kesulitan antara lain : meningkatkan kompetensi melalui partisipasi aktif dalam kelompok kerja Kepala Sekolah (K3S dan kelompok kerja guru (KKG sebagai wadah pembinaan professional dan peningkatan mutu pendidikan.

Analisis Tingkat Kepuasan Mahasiswa Terhadap Pelayanan Akademik Sekolah Tinggi Theologia Jaffray Makassar

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Yonas Boky

2016-09-01

Full Text Available Bidang akademik Sekolah Tinggi Theologia Jaffray telah berusaha sebaik mungkin untuk melakukan pelayanan kepada mahasiswa sebagai konsumennya. Namun tidak dapat dipungkiri lagi bahwa selalu saja ada kekurangan dalam pelayanannya sehingga menimbulkan ketidakpuasan dari mahasiswa sebagai pelanggannya. Kenyataannya, kepuasan mahasiswa terhadap pelayanan akademik berbeda-beda. Oleh karena itu tujuan penulisan ini adalah Pertama, untuk menjelaskan sejauh mana tingkat kepuasan mahasiswa S1 terhadap pelayanan bidang akademik Sekolah Tinggi Theologia Jaffray Makassar berdasarkan hierarki kebutuhan Maslow. Kedua, menjelaskan bagaimana bidang akademik Sekolah Tinggi Theologia Jaffray Makassar melaksanakan tugas dan tanggung jawabnya. Strategi untuk meningkatkan kepuasan mahasiswa terhadap layanan Akademik STFT Jaffray Makassar adalah perlunya melaksanakan hal-hal yang menjadi prioritas utama, seperti: pelayanan akademik mampu bertindak cepat atas setiap keluhan mahasiswa, adanya evaluasi di bidang akademik sendiri secara rutin untuk melihat sejauh mana tingkat kepuasan mahasiswa itu tercapai, sistem komputerisasi akademik yang sudah berjalan baik walaupun dinilai oleh mahasiswa masih perlu peningkatan lagi. Hal-hal yang harus dipertahankan oleh bidang akademik STFT Jaffray Makassar adalah pihak kampus harus terus memberikan keamanan dan kenyamanan kepada mahasiswa, memberikan bimbingan akademik maupun konseling bagi mahasiswa yang mengalami kendala.The academic department of Sekolah Tinggi Filsafat Theologia Jaffray has striven to minister to students as consumers, the fact is, contentment differs among students toward the service given by academics. Because of this, the purpose of this writing is as follows: First, to explain how high the level of contentment is among bachelor level students towards the services of the department of academics of Sekolah Tinggi Theologia Jaffray based on Maslow’s hierarchy of needs. Second, to explain how the academic

Self-Efficacy dan Konformitas dengan Prokrastinasi Akademik Mahasiswa

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Rosmayati Rosmayati

2017-12-01

Full Text Available Penelitian ini bertujuan untuk mengetahui hubungan self-efficacy dan konformitas dengan prokrastinasi akademik mahasiswa Bimbingan dan Konseling Universitas Negeri Semarang baik secara parsial maupun secara bersama-sama. Penelitian ini menggunakan desain kuantitatif korelasional. Sampel yang digunakan berjumlah 125 dari populasi 284 mahasiswa dengan teknik pengambilan sampel simple random  sampling. Adapun teknik analisis data menggunakan regresi. Hasil penelitian menunjukkan bahwa antara self-efficacy dengan prokrastinasi akademik memiliki hubungan yang signifikan (R= 0,565, F(3,121 = 18,903, p = 0,05. Sedangkan antara self-efficacy dan konformitas dengan prokrastinasi akademik memiliki hubungan yang signifikan (R = 0,595, F(18,903 = 7,957, p = 0,05. While between self-efficacy and conformity with academic procrastination have significant relationship (R = 0,595, F (18,903 = 7,957, p = <0,01. Based om the results of research Guidance and Counseling teachers are advised to provide Guidance and Counseling services to decrease academic procrastination through the development of self-efficacy and conformity.

Simatik : Aplikasi Simulasi Bank Soal Tes Potensi Akademik (TPA Berbasis Multi Platform

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Made Hendra Yudha Saputra

2017-01-01

Full Text Available Abstrak---Penelitian ini bertujuan untuk : (1 menghasilkan rancang bangun dan implementasi Simatik : Aplikasi Simulasi Bank Soal Tes Potensi Akademik (TPA Berbasis Multi Platform, (2 Mengetahui respon dari Pengguna terhadap Simatik : Aplikasi Simulasi Bank Soal Tes Potensi Akademik (TPA Berbasis Multi Platform. Dalam perancangannya, aplikasi ini akan menggunakan arsitektur client-server untuk melakukan proses pertukaran data. Perancangan dilakukan dengan menggunakan model fungsional berupa UML. Model fungsional berupa UML tersebut diimplementasikan dalam sebuah framework yaitu Phonegap dengan bahasa pemrograman HTML5. Untuk mengetahui respon terhadap Simatik : Aplikasi Simulasi Bank Soal Tes Potensi Akademik (TPA Berbasis Multi Platform ini diperoleh dengan menggunakan metode angket. Hasil akhirnya yaitu berupa Aplikasi Simatik berbasis Multi Platform yang dapat diinstall pada perangkat mobile untuk digunakan dalam latihan soal-soal yang terkait dengan Tes Potensi Akademik (TPA. Berdasarkan hasil uji usability, aplikasi Simatik berbasis Multi Platform ini mendapatkan persentase hasil sebesar 95,6 % dengan kategori sangat baik yang berarti dalam pengoperasiannya aplikasi ini mudah untuk digunakan dan dapat berfungsi sesuai dengan fungsi seharusnya. Kata Kunci : Phonegap, Multi Platform, Client Server, Mobile, Tes Potensi Akademik (TPA, Simatik   Abstract--- This research is purpose to : (1 produce generate design and implementation Simatik : Aplikasi Simulasi Bank Soal Tes Potensi Akademik (TPA Berbasis Multi Platform (2 To knowing the response of users to Simatik : Aplikasi Simulasi Bank Soal Tes Potensi Akademik (TPA Berbasis Multi Platform. In its design, this application will use the client-server architecture to make the exchange process of data. The design were done by using a functional model UML form. The functional model UML form is implemented within a framework that is phonegap with HTML 5 programming languages. To determine the

Tingkat Prokrastinasi Akademik Siswa Sekolah Menengah Pertama Muhammadiyah 9 Yogyakarta

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Martika Laely Munawaroh

2017-03-01

Full Text Available Abstract: Academic procrastination is one of problems that may occur among junior high school students. This study aims to describe the level of academic procrastination of junior high school students in Sekolah Menengah Pertama Muhammadiyah 9 Yogyakarta. This research uses descriptive quantitative research. The results of this study showed that 17,2% of subjects have high academic procrastination, 77,1% of them have the moderate one, and 5,7% of them have the low one. Based on those results, it is recommended for the next researcher to use Solution-Focused Brief Counseling in reducing academic procrastination in SMP Muhammadiyah 9 Yogyakarta. Abstrak: Prokrastinasi akademik merupakan salah satu permasalahan yang terjadi di kalangan pelajar Sekolah Menengah Pertama (SMP. Penelitian ini bertujuan untuk mendeskripsikan tingkat prokrastinasi akademik siswa SMP Muhammadiyah 9 Yogyakarta. Penelitian ini menggunakan jenis penelitian deskriptif kuantitatif. Hasil penelitian menunjukkan bahwa 17,2% pelajar SMP Muhammadiyah 9 Yogyakarta memiliki prokrastinasi akademik tinggi, 77,1% sedang, dan 5,7% rendah. Berdasarkan hasil penelitian tersebut, direkomendasikan agar peneliti selanjutnya menggunakan Konseling Ringkas Berfokus Solusi untuk mereduksi perilaku prokrastinasi akademik siswa SMP Muhammadiyah 9 Yogyakarta.

UPAYA MENGURANGI PROKRASTINASI AKADEMIK MELALUI LAYANAN PENGUASAAN KONTEN

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Eka Dya Junita

2014-06-01

Full Text Available Tujuan penelitian ini untuk memperoleh informasi atau temuan empiris tentang mengurangi prokrastinasi akademik melalui layanan penguasaan konten pada siswa kelas VIII C SMP Negeri 3 Taman Pemalang. Populasinya adalah seluruh  kelas VIII SMP Negeri 3 Taman Pemalang yang berjumlah 312 siswa dan sampel yang berjumlah 36 siswa menggunakan purposeive sampling. Teknik pengumpulan data menggunakan skala prokrastinasi akademik. Instrumen tersebut telah diujicobakan untuk digunakan dalam penelitian menggunakan validitas dengan rumus product moment oleh Pearson dan reabilitas instrument dengan rumus Alpha. Teknik analisis data yang digunakan yakni analisis deskriptif persentase dan Uji t ( t-test. Hasil penelitian ini menunjukan bahwa terdapat penurunan prokrastinasi akademik melalui layanan penguasaan konten, dengan nilai thitung = 13,638 > ttabel = 2,032. Simpulan dari penelitian ini yakni prokrastinasi akademik dapat dikurangi melalui layanan penguasaan konten. Oleh karena itu, diharapkan guru pembimbing dapat lebih mengintensifkan layanan penguasaan konten kepada siswa sebagai strategi alternatif untuk membantu siswa mengurangi prokrastinasi akademik. The aim for this research was to get information or empirical finding about decreasing effect of academic procrastination as the result of content mastery. Population of this study was 8 grade students of the VIII C class in SMP Negeri 3 Taman Pemalang which consist of 312 students. 36 students was selected using purposive sampling technique. Data collection techniques using academic procrastination scale. The instrument has been tested for validity using Pearson product moment and reliability of the instrument with alpha formula. Data analysis used pearson product moment, descriptive percentage, and t-test. The result showed there was decrement of academic procrastination thrught mastery of content service with tcount = 13,638> ttable = 2,032. From this reasearch it can be conluded that academic

Faktor – Faktor Penyebab Prokrastinasi Akademik pada Siswa Kelas XI SMA Negeri Kabupaten Temanggung

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Ujang Candra

2014-10-01

Full Text Available Prokrastinasi akademik adalah jenis penundaan yang dilakukan pada jenis tugas formal yang berhubungan dengan tugas akademik. Salah satunya yang sering menjadi prokrastinator adalah siswa. Jika prokrastinasi ini tidak segera dibenahi, akan merugikan siswa itu sendiri. Perkembangan siswa dalam meraih prestasi akademik menjadi terganggu. Tujuan dari penelitian ini adalah untuk mengetahui faktor-faktor penyebab prokrastinasi akademik pada siswa kelas XI SMA Negeri Kabupaten Temanggung. Angket diberikan kepada 221 siswa SMA Negeri Kabupaten Temanggung, serta 6 orang responden untuk diwawancara. Analisis data menggunakan analisis kuantitatif yang mencakup deskriptif presentase, dan analisis kulitatif hasil wawancara. Hasil penelitian menemukan bahwa faktor internal penyebab prokrastinasi akademik dilihat dari kondisi fisik (69%, kondisi psikologis (73%. Kemudian faktor eksternal penyebab prokrastinasi akademik dilihat dari kondisi keluarga (75%, lingkungan sekolah (67%, lingkungan masyarakat (66%. Simpulan penelitian ini bahwa faktor internal utama penyebab prokrastinasi akademik pada siswa adalah kondisi fisik dan faktor eksternal yang paling utama penyebab prokrastinasi akademik pada siswa adalah lingkungan sekolah. Bagi konselor sekolah, dapat memberikan layanan prnguasaan konten mengenai manajemen waktu sebagai upaya mencegah munculnya perilaku prokrastinasi akademik. Academic procrastination is the kind of delay that made the tasks associated with the assignment of formal academic. One of them is that often a student prokrastinator. If procrastination is not immediately addressed, it would be detrimental to the students themselves. The development of students academic achievement become impaired. The purpose of this study is to determine the internal factors and external factors that cause students academic procrastination.. Questionnaire given to 221 students of High School in Temanggung, and 6 respondents to be interviewed. Data analysis using

PENGARUH SUPERVISI AKADEMIK DAN KEPEMIMPINAN KEPALA SEKOLAH TERHADAP DISIPLIN KERJA GURU

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samsuadi PEP

2015-09-01

Full Text Available Tujuan  penelitian  adalah  (1  untuk mengetahui pengaruh supervisi akademik pengawas dan kepemimpinan kepala sekolah secara bersama-sama berpengaruh terhadap disiplin kerja guru SMK Negeri 1 Bantaeng, (2 untuk  mengetahui  pengaruh  supervisi akademik  pengawas   terhadap   disiplin   kerja   guru   SMK Negeri 1 Bantaeng,   (3  untuk   mengetahui   pengaruh   kepemimpinan   kepala   sekolah terhadap disiplin kerja guru SMK Negeri 1 Bantaeng. Populasi   penelitian   ini  adalah   guru   SMK Negeri 1 Bantaeng yang  berjumlah 80 orang,  melalui rumus Slovin diperoleh sampel sebanyak  67 orang. Teknik penarikan sampel dilakukan dengan menggunakan teknik proportionate stratified  random sampling. Instrumen pengumpulan data yang digunakan adalah angket dengan memakai  skala Likert modifikasi Hadi. Hasil analisis deskriptif menunjukkan bahwa supervisi akademik pengawas dan  kepemimpinan kepala sekolah berada pada katregori tinggi. Sedangkan dari hasil uji prasyarat tidak ditemukan gejala multikolinieritas,  sehingga  memenuhi  syarat  untuk  melakukan  analisis  regresi ganda.  Dari  hasil  uji  hipotesis  ditemukan  bahwa supervisi akademik pengawas dan kepemimpinan kepala sekolah  secara bersama-sama berpengaruh terhadap disiplin kerja guru SMK Negeri 1 Bantaeng. Secara parsial supervisi  akademik pengawas tidak berpengaruh terhadap disiplin kerja guru SMK Negeri 1 Bantaeng, sedangkan kepemimpinan kepala sekolah berpengaruh terhadap disiplin kerja guru SMK Negeri 1 Bantaeng. 

Analisis Faktor yang Berhubungan dengan Tingkat Stress Akademik Mahasiswa Reguler Program Studi D III Keperawatan Cirebon Poltekkes Kemenkes Tasikmalaya

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Edi Ruhmadi

2014-11-01

Full Text Available Mahasiswa  sebagai  bagian  dari  sebuah  kelompok  individu  merupakan bagian dari target integrasi pelayanan keperawatan, kelompok yang paling rapuh terkena ketidakseimbangan homeostasis karena stress dari kegiatan akademik. Peningkatan kejadian stres akademik akan meingkatkan kemampuan akademik yang mempengaruhi index prestasi  dan  beratnya stres dapat menyebabkan seseorang berperilaku negatif. Tujuan penelitian ini adalah untuk mengidentifikasi faktor-faktor yang berhubungan dengan akademik stres pada mahasiswa Diploma III Keperawatan Cirebon. Desain penelitian  adalah  analisis  korelasi dengan pendekatan  cross  sectional. Responden sebanyak 77 mahasiswa diambil secara acak, instrumen yang digunakan yaitu kuesioner yang terdiri dari data demografi dan pernyataan mengenai level stres akademik dengan Depression Anxiety and Stess Scale 42 (DASS 42 dan dianalisis dengan uji chi-square. Hasil menunjukkan bahwa  terdapat  hubungan  antara  usia dan tingkat stres akademik yang signifikan (p=0.039 dan hubungan antara jumlah kunjungan ke puskesmas dengan tingkat stress akademik (p=0.008. 

Rancang Bangun Sistem Business Intelligence Universitas Sebagai Pendukung Pengambilan Keputusan Akademik

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Zainal Arifin

2016-01-01

Full Text Available Sistem business intelligence universitas dimulai dengan tahapan integrasi data, analisis data, membuat laporan dan membuatweb portal dan kemudian mengitegrasikan laporan tersebut dengan web portal. Analisis data diolah dengan OLAP, KPI dandata mining untuk mengekstrak informasi dari data yang tersimpan didalam data warehouse. Hasil proses analisis datatersebut di representasikan dalam bentuk laporan statistik dan dashboard, kemudian digunakan sebagai pendukungpengambilan keputusan akademik. Penelitian ini bertujuan merancang bangun sistem business intelligence universitassebagai pendukung pengambilan keputusan akademik pada Universitas Mulawarman berbasis web dengan OLAP. Penelitianini menghasilkan kerangka sistem dan web portal sistem business intelligence universitas yang diakses melalui browsersecara online. Business Intelligence dapat digunakan sebagai solusi untuk mempertimbangkan proses pengambilan keputusandalam pengelolaan universitas dan solusi dalam peningkatan kinerja pengelolaan akademik untuk mencapai keunggulanakademik.Kata kunci : Business Intelligence; Data warehouse; OLAP; KPI; Data mining

Hubungan Antara Efikasi Diri Akademik Dengan School Well-being Pada Siswa SMP Hang Tuah 1 Jakarta

OpenAIRE

Firmanila, Fika; Sawitri, Dian Ratna

2015-01-01

Kegiatan belajar yang berkualitas sangat tergantung pada guru, siswa, sarana pembelajaran, lingkungan kelas, dan budaya kelas. Siswa yang merasa nyaman, senang, dan berharga akan memiliki penilaian yang positif terhadap sekolah yaitu school well-being. Kesejahteraan siswa salah satunya ditentukan oleh efikasi diri akademik yaitu keyakinan diri individu dalam menyelesaikan tugas-tugas akademik di sekolah. Penelitian ini bertujuan untuk mengetahui hubungan antara efikasi diri akademik dengan sc...

Keldysh theory of strong field ionization: history, applications, difficulties and perspectives

International Nuclear Information System (INIS)

V Popruzhenko, S

2014-01-01

The history and current status of the Keldysh theory of strong field ionization are reviewed. The focus is on the fundamentals of the theory, its most important applications and those aspects which still raise difficulties and remain under discussion. The Keldysh theory is compared with other nonperturbative analytic methods of strong field atomic physics and its important generalizations are discussed. Among the difficulties, the gauge invariance problem, the tunneling time concept, the conditions of applicability and the application of the theory to ionization of systems more complex than atoms, including molecules and dielectrics, are considered. Possible prospects for the future development of the theory are also discussed. (review article)

Hubungan Motivasi Belajar dengan Prestasi Akademik Mahasiswa Bimbingan dan Konseling 2013 Unnes

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Agung Nursamiaji

2015-09-01

Full Text Available Motivasi belajar yang dimiliki mahasiswa dalam kegiatan pembelajaran sangat berperan untuk meningkatkan prestasi akademik. Mahasiswa yang bermotivasi tinggi dalam belajar akan memperoleh prestasi akademik yang tinggi pula, artinya semakin tinggi motivasinya, semakin tinggi intensitas usaha dan upaya yang dilakukan, maka semakin tinggi prestasi akademik yang diperolehnya. Tujuan penelitian ini adalah untuk mengetahui hubungan antara motivasi belajar dengan prestasi akademik mahasiswa jurusan Bimbingan dan Konseling angkatan 2013 Universitas Negeri Semarang. Penelitian ini merupakan penelitian korelasional dengan pendekatan kuantitatif. Populasi dalam penelitian ini adalah seluruh mahasiswa jurusan Bimbingan dan Konseling angkatan 2013 Universitas Negeri Semarang. Teknik sampel yang digunakan adalah Random Sampling sehingga didapatkan sampel sebanyak 32 mahasiswa. Analisis data menggunakan Analisis Deskriptif Persentase dan korelasi product moment. Hasil penelitian menunjukkan bahwa (1 Mahasiswa jurusan Bimbingan dan Konseling Universitas Negeri Semarang angkatan 2013 memiliki tingkat motivasi belajar yang tinggi yaitu sebanyak 71,9% mahasiswa. (2 Mahasiswa jurusan Bimbingan dan Konseling Universitas Negeri Semarang angkatan 2013 memiliki tingkat prestasi akademik yang tinggi yaitu sebanyak 68,8% mahasiswa. (3 Terdapat hubungan yang kuat antara motivasi belajar dengan prestasi akademik mahasiswa jurusan Bimbingan dan Konseling angkatan 2013, dengan rhitung sebesar 0,721. Jadi semakin tinggi motivasi belajar maka semakin tinggi juga prestasi akademik mahasiswa dan sebaliknya. Motivation owned by students in learning activities contribute to improve academic achievement. The higher the motivation, the higher the academic achievement obtained. The purpose of this study is determine the relationship between learning motivation and academic achievement of students in Guidance and Counseling department (GCD force 2013 Unnes. This research is correlation

Fra rocker til akademiker

DEFF Research Database (Denmark)

Mørck, Line Lerche; Hansen, Peter

2015-01-01

) at finde et trygt hjem til hans kone og kommende barn og 2) bevæge sig i retning af at blive mere akademiker. Artiklen analyserer, hvordan han sammen med andre formår at overleve og delvist overskride dobbeltheder, dilemmaer og helt umulige doublebind-situationer, som han gennemgår undervejs i exit......-forløbet. Artiklen afrundes med en diskussion af, hvad der er betydningsfuldt, når vi samfundsmæssigt skal skabe bedre og mere meningsfulde bande-exit-processer....

Sistem Informasi Akademik pada SMA Hang Tuah Belawan

OpenAIRE

Tanjung, Dini Syahroni

2015-01-01

Informasi yang disampaikan oleh SMA HANG TUAH BELAWAN selama ini disebarkan melalui brosur dan cara yang seperti itu kurang efektif. Oleh karena itu dibuatlah sistem informasi akademik ini agar penyampaian informasinya lebih efektif dan efisien. 092406181

Keldysh proximity action for disordered superconductors

International Nuclear Information System (INIS)

Feigel'man, M.V.; Larkin, A.I.; Skvortsov, M.A.

2005-01-01

We review a novel approach to the superconductive proximity effect in disordered normal-superconducting (N-S) structures. The method is based on the multicharge Keldysh action and is suitable for the treatment of interaction and fluctuation effects. As an application of the formalism, we study the subgap conductance and noise in two-dimensional N-S system in the presence of the electron-electron interaction in the Cooper channel. It is shown that singular nature of the interaction correction at large scales leads to a nonmonotonous temperature, voltage and magnetic field dependence of the Andreev conductance. (author)

STRATEGI PEMBELAJARAN, KEMAMPUAN AKADEMIK, KEMAMPUAN PEMECAHAN MASALAH, DAN HASIL BELAJAR BIOLOGI

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I Wayan Karmana

2012-04-01

Full Text Available Abstract: The Learning Strategy, Academic Capability, Problem Solving Skills, and Cognitive Achievement In Biology. This study investigates the effects of learning strategy, academic capability, and their interaction on problem solving skills, critical thinking, metacognitive awareness, and cognitive achievement in biology. This is a quasi experimental study using pretest-posttest non-equivalent control group design. The sample includes 60 tenth grade students of Senior High School 4 Mataram. Instru­ments used are a test and a questionnaire. The data are analyzed using ANCOVA and follow up tests using LSD. Based on the data analysis, the following conclusions are drawn (1 there are effects of PBL strategy and integrated PBL and STAD on problem solving skill, critical thinking, and cognitive achievement in biology, but not on metacognitive awareness, (2 there is an effect of academic compe­tency on cognitive achievement in biology, but not on problem solving skill, critical thinking, and meta­cognitive awareness, and (3 there are no effects of learning strategy and academic competency interac­tion on problem solving skill, critical thinking, metacognitive awareness and learning cognitive achievement in biology. Abstrak: Strategi Pembelajaran, Kemampuan Akademik, Kemampuan Pemecahan Masalah, dan Hasil Belajar Biologi. Penelitian ini bertujuan untuk mengetahui pengaruh strategi pembelajaran, ke­mampuan akademik, dan interaksi strategi pembelajaran dan kemampuan akademik terhadap kemam­puan pemecahan masalah, kemam­puan berpikir kritis, kesadaran metakognitif, dan hasil belajar kognitif biologi siswa SMA. Penelitian kuasi-eksperimental ini melibatkan 60 siswa kelas X SMA Negeri 4 Mataram yang datanya dikumpul­kan menggunakan tes dan angket yang dianalisis menggunakan Anakova. Hasilnya menunjukkan bahwa (1 ada pengaruh strategi pembelajaran terhadap kemampuan pemecahan masalah, kemampuan berpikir kritis, dan hasil belajar kognitif biologi

Nonequilibrium absorption in semiconductors and the dynamical Franz-Keldysh effect

DEFF Research Database (Denmark)

Johnsen, Kristinn; Jauho, Antti-Pekka

1997-01-01

We theoretically study free electron light absorption for a sample which is placed in a strong, time-dependent uniform electric field. In the case of static fields one observes the Franz-Keldysh effect: finite absorption for photon energies below the band gap. We refer to this phenomenon as the F...

MEKANISME PEMBERIAN INSENTIF TENAGA AKADEMIK DI UNIVERSITAS NEGERI YOGYAKARTA

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Hani'atul Millah

2016-09-01

Full Text Available Penelitian ini mengkaji tentang mekanisme pemberian insentif dan dampaknya terhadap kinerja tenaga akademik di UNY. Dampak insentif ini dilihat secara umum dan pasca- lahirnya kebijakan baru tentang penghentian beberapa insentif finansial dosen tahun 2013. Penelitian ini menggunakan metode kualitatif, pengumpulan data melalui wawancara mendalam, observasi dan studi dokumentasi, dengan sampel purposive dan teknik snowball. Pembahasan hasil penelitian dilakukan dengan analisis induktif interpretatif komponensial yang dikembangkan berdasarkan model Spradley. Hasil penelitian menunjukkan bahwa, (1 UNY tidak memiliki satu aturan khusus dan integral yang mengatur mekanisme pemberian insentif untuk tenaga akademik, baik pada tingkat universitas maupun fakultas. (2 Insentif finansial, non-finansial dan perverse incentives yang ditemukan dari hasil penelitian memiliki pengaruh terhadap kinerja tenaga akademik. Tetapi insentif finansial memiliki pengaruh lebih signifikan dibanding kedua bentuk insentif lain. Hal ini ditunjukkan dengan tingkat kehadiran dosen mengajar dan mengawas ujian mahasiswa di kelas yang tinggi saat ada insentif dan menurun saat insentif tersebut dihilangkan. Kata kunci: insentif, dampak insentif, tenaga akademik THE MECHANISM OF INCENTIVE DISTRIBUTION OF ACADEMIC STAFF AT YOGYAKARTA STATE UNIVERSITY Abstract This study reveals the mechanism of incentive distribution and its impact on the performance of academic staff at UNY. Its impact is seen in general and after the issuing of a new policy that stopped the financial incentives of lecturer in 2013. The research used a qualitative method. Data were collected through depth interview, observation, and review of documents, with purposive sampling based on snowball technique. The data was analyzed using componential interpretative inductive analysis developed by Spradley’ model. The result shows, (1 UNY does not have the specific and integral rules that regulate mechanism of incentive

Duality and bosonization in Schwinger–Keldysh formulation

International Nuclear Information System (INIS)

Saraví, R E Gamboa; Naón, C M; Schaposnik, F A

2014-01-01

We present a path-integral bosonization approach for systems out of equilibrium based on a duality transformation of the original Dirac fermion theory combined with the Schwinger–Keldysh time closed contour technique, to handle the non-equilibrium situation. The duality approach to bosonization that we present is valid for D ≥ 2 space–time dimensions leading for D = 2 to exact results. In this last case we present the bosonization rules for fermion currents, calculate current–current correlation functions and establish the connection between the fermionic and bosonic distribution functions in a generic, non-equilibrium situation. (paper)

Schwinger-Keldysh diagrammatics for primordial perturbations

Science.gov (United States)

Chen, Xingang; Wang, Yi; Xianyu, Zhong-Zhi

2017-12-01

We present a systematic introduction to the diagrammatic method for practical calculations in inflationary cosmology, based on Schwinger-Keldysh path integral formalism. We show in particular that the diagrammatic rules can be derived directly from a classical Lagrangian even in the presence of derivative couplings. Furthermore, we use a quasi-single-field inflation model as an example to show how this formalism, combined with the trick of mixed propagator, can significantly simplify the calculation of some in-in correlation functions. The resulting bispectrum includes the lighter scalar case (mcase (m>3H/2) that has not been explicitly computed for this model. The latter provides a concrete example of quantum primordial standard clocks, in which the clock signals can be observably large.

Tata Kelola Mahasiswa Terhadap Integritas Akademik Dan Plagiarisme

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Abid Rohmanu

2016-10-01

Full Text Available Abstract: This research would like to see how the instituion of Postgraduate Program (PPs STAIN Ponorogo to manage about the scholars academic integrity and plagiarism, and how ideal the respond of PPs STAIN Ponorogo about that scholars’ attitude is. This research is quite important because of many things. First, the scientific writing in short paper (makalah is the entry point of education and teaching in PT. Second, in other side, PPs STAIN Ponorogo is immediately charged to address and respond an indication of plagiarism di the scholars level, and it needs the research as its basis. This research basically is survey quantitatively toward active scholars in Sharia Economic Study amount of 37 scholars. Instrument used is questionnaire with analysis technique of descriptive statistic. This research concludes that as many as 53% of respondents accustomed to cite exactly what words, phrase, sentence say from reference even though not in the context of direct citation (word for word plagiarism. According to it, so the implication of policy can be taken is socialization about academic integrity in any kind and forum, integrating strict rule about plagiarism in the academic guide, shaping an institution “Language Service (Layanan Bahasa”, and “ Assembly of Academic Consideration (Majelis Pertimbangan Akademik” which concern about plagiarism and software of plagiarism detector, and no less important is building academic culture which is full of integrity holistically. Abstrak: Penelitian ini ingin melihat bagaimana pengelolaan mahasiswa PPs STAIN Ponorogo terhadap integritas akademik dan plagiarisme, dan bagaimana idealnya respon kebijakan PPs STAIN Ponorogo terhadap sikap mahasiswa tersebut. Penelitian ini dirasa cukup penting karena beberapa hal. Pertama, penulisan karya ilmiah dalam bentuk makalah merupakan ujung tombak pendidikan dan pengajaran PT. Kedua, di sisi yang lain, PPs STAIN Ponorogo dituntut untuk segera menyikapi dan merespon

MOTIVASI BELAJAR SEBAGAI MEDIATOR HUBUNGAN KECERDASAN ADVERSITAS DAN PROKRASTINASI AKADEMIK PADA MAHASISWA YANG AKTIF BERORGANISASI

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Dwi Nur Rachmah

2015-06-01

Full Text Available Abstrak: Penelitian bertujuan untuk mengetahui pengaruh kecerdasan adversitas terhadap prokrastinasi akademik secara langsung atau melalui motivasi belajar. Desain penelitian ini menggunakan metode cross sectional study. Subjek penelitian adalah 50 mahasiswa kedoktoren Universitas Lambung Mangkurat yang aktif berorganisasi yang diambil dengan teknik cluster random sampling. Instrumen penelitian menggunakan skala kecerdasan adversitas, skala motivasi belajar, dan skala prokrastinasi akademik. Sebelum digunakan untuk penelitian, instrumen diucobakan untuk memastikan kadar validitas dan reliabitasnya tinggi. Teknik analisis data menggunakan statistik deskriptif, regresi ganda, dan analisis jalur. Hasil penelitian menunjukkan bahwa kecerdasan adversitas berpengaruh secara langsung maupun secara tidak langsung melalui motivasi belajar terhadap prokrastinasi akademik. Kata Kunci: kecerdasan adversitas, motivasi belajar, prokrastinasi akademik, mahasiswa yang aktif berorganisasi LEARNING MOTIVATION AS A MEDIATOR OF THE RELATIONSHIP BETWEEN ADVERSITY QUOTIENT AND ACADEMIC PROCRASTINATION IN STUDENTS ACTIVELY INVOLVED IN ORGANIZATIONS Abstract: This research was aimed to reveal the influence of Adversity Quotient on academic procras- tination students actively involved in organizations either directly or through motivation. The research design utilized the cross sectional study and the cluster random sampling with 50 respondents. The instruments were Adversity Quotient questionnaires, motivation questionnaires, and academic procrastination questionnaires. Data were analyzed by using the path analysis. The findings showed that Adversity Quotient indirectly influenced academic procrastination without motivation and also Adversity Quotient indirectly influencedacademic procrastination through motivation. Keywords: Adversity quotient, motivation, academic procrastination, students actively involved in organizations

Schwinger-Keldysh propagators from AdS/CFT correspondence

International Nuclear Information System (INIS)

Herzog, C.P.; Son, D.T.

2003-01-01

We demonstrate how to compute real-time Green's functions for a class of finite temperature field theories from their AdS gravity duals. In particular, we reproduce the two-by-two Schwinger-Keldysh matrix propagator from a gravity calculation. Our methods should work also for computing higher point lorentzian signature correlators. We elucidate the boundary condition subtleties which hampered previous efforts to build a lorentzian-signature AdS/CFT correspondence. For two-point correlators, our construction is automatically equivalent to the previously formulated prescription for the retarded propagator. (author)

Erfolgsfaktoren eines Online-Portals für Akademiker

OpenAIRE

Völler, Michaele (Professor Dr.)

2016-01-01

Mit der verstärkten Nutzung digitaler Möglichkeiten im Privat- und Berufsleben werden digitale Kanäle auch für Versicherungsfragen immer selbstverständlicher. Am Markt haben sich bereits einige Online-Portale etabliert, die Versicherungsvergleiche und teils auch den Versicherungsabschluss anbieten. Allerdings gibt es bislang erst wenige bekannte Online-Portale für spezielle Zielgruppen wie beispielsweise für das attraktive Segment der Akademiker. Die vorliegende Veröffentlichung stellt di...

PENGARUH LINGKUNGAN SOSIAL TERHADAP ASPEK INDIVIDU DAN HUBUNGANNYA DENGAN PRESTASI AKADEMIK MAHASISWA PENDIDIKAN MATEMATIKA

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Abul Walid

2015-05-01

Full Text Available Penelitian ini bertujuan untuk mendeskripsikan model pengaruh lingkungan sosial terhadap aspek individu (prokrastinasi akademik, self-regulated learning, dan self-efficacy dan hubungannya dengan prestasi akademik mahasiswa pendidikan matematika. Populasi penelitian ini sebanyak 1.285 mahasiswa pendidikan matematika di tiga perguruan tinggi di Kota Jambi. Sampel dipilih dengan cara purposif bersamaan dengan stratifikasi dua angkatan mahasiswa pendidikan matematika, selanjutnya diambil secara acak 260 mahasiswa sebagai subjek penelitian. Pengumpulan data menggunakan skala Likert. Validitas instrumen menggunakan validitas isi dan validitas konstruk. Teknik analisis data yang digunakan adalah model persamaan struktural (SEM, analisis faktor konfirmatori (CFA, dan t-test. SEM dan CFA digunakan untuk menguji secara kuantitatif model kausalitas simultan variabel penelitian baik secara langsung maupun tidak langsung serta menguji apakah konstruk teoritis yang dimodelkan didukung oleh data yang dikumpulkan, sedangkan t-test digunakan untuk menguji secara statistik perbedaan rata-rata skor setiap variabel dilihat dari gender. Hasil penelitian ini menunjukkan bahwa model persaman struktural yang dikembangkan sesuai dengan data yang dikumpulkan. Gender berpengaruh terhadap perbedaan setiap variabel, kecuali alasan penundaan. Hasil penelitian ini juga menunjukkan bahwa terdapat pengaruh lingkungan sosial terhadap aspek individu (prokrastinasi akademik, self-regulated learning dan self-efficacy dan terdapat hubungannya dengan prestasi akade-mik mahasiswa pendidikan matematika. Kata Kunci: SEM, prestasi akademik, prokrastinasi akademik, self-regulated learning, self-efficacy, dan lingkungan sosial.   THE EFFECTS OF SOCIAL ENVIRONMENT ON INDIVIDUAL ASPECTS AND THEIR RELATIONSHIP WITH THE ACADEMIC ACHIEVEMENT OF THE STUDENTS OF MATHEMATICS EDUCATION DEPARTMENTS Abstract This study aims to describe the models of the effect of social environment on individual

Singular Solutions to a (3 + 1-D Protter-Morawetz Problem for Keldysh-Type Equations

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Nedyu Popivanov

2017-01-01

Full Text Available We study a boundary value problem for (3 + 1-D weakly hyperbolic equations of Keldysh type (problem PK. The Keldysh-type equations are known in some specific applications in plasma physics, optics, and analysis on projective spaces. Problem PK is not well-posed since it has infinite-dimensional cokernel. Actually, this problem is analogous to a similar one proposed by M. Protter in 1952, but for Tricomi-type equations which, in part, are closely connected with transonic fluid dynamics. We consider a properly defined, in a special function space, generalized solution to problem PK for which existence and uniqueness theorems hold. It is known that it may have a strong power-type singularity at one boundary point even for very smooth right-hand sides of the equation. In the present paper we study the asymptotic behavior of the generalized solutions of problem PK at the singular point. There are given orthogonality conditions on the right-hand side of the equation, which are necessary and sufficient for the existence of a generalized solution with fixed order of singularity.

Heat transport as torsional responses and Keldysh formalism in a curved spacetime

OpenAIRE

Shitade, Atsuo

2013-01-01

We revisit a theory of heat transport in the light of a gauge theory of gravity and find the proper heat current with a corresponding gauge field, which yields the natural definitions of the heat magnetization and the Kubo-formula contribution to the thermal conductivity as torsional responses. We also develop a general framework for calculating gravitational responses by combining the Keldysh and Cartan formalisms. By using this framework, we explicitly calculate these two quantities and rep...

Pioneering space research in the USSR and mathematical modeling of large problems of radiation transfer

International Nuclear Information System (INIS)

Sushkevich, T.A.

2011-01-01

This review is to remind scientists of the older generation of some memorable historical pages and of many famous researchers, teachers and colleagues. For the younger researchers and foreign colleagues it will be useful to get to know about pioneer advancements of the Soviet scientists in the field of information and mathematical supply for cosmonautic problems on the eve of the space era. Main attention is paid to the scientific experiments conducted on the piloted space vehicles and the research teams who created the information and mathematical tools for the first space projects. The role of Mstislav Vsevolodovich Keldysh, the Major Theoretician of cosmonautics, is particularly emphasized. He determined for the most part the basic directions of development of space research and remote sensing of the Earth and planets that are shortly called remote sensing

BENTUK KECURANGAN AKADEMIK (ACADEMIC CHEATING MAHASISWA PGMI FAKULTAS TARBIYAH DAN KEGURUAN UIN ALAUDDIN MAKASSAR

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Nursalam Nursalam

2013-12-01

Full Text Available Abstrak: Penelitian ini bertujuan untuk mengetahui bentuk-bentuk kecurangan akademik (academic cheating mahasiswa PGMI Fakultas Tarbiyah dan Keguruan UIN Alauddin Makassar. Hasil penelitian menunjukkan bahwa bentuk-bentuk kecu-rangan akademik yang dilakukan oleh mahasiswa PGMI adalah menyontek pe-kerjaan teman pada saat ujian, membuka buku saat ujian, menyalin tugas teman, membuka internet melalui handphone, copy paste dari internet. Faktor-faktor yang menyebabkan mahasiswa melakukan kecurangan akademik adalah sangat sulit mengerjakan tugas yang diberikan oleh dosen membutuhkan jawaban yang real, mahasiswa terpengaruh dengan adanya mahasiswa lain yang menyontek, soal yang diberikan oleh dosen terlalu sulit, waktu yang disediakan sangat singkat, mahasiswa tidak memahami materi yang diujikan, ragu dengan jawaban sendiri, tidak ada hukuman yang diberikan jika berbuat curang, mendapatkan nilai yang bagus. Abstract: This study aims to determine the forms of academic cheatings of the students of Madrasah Ibtidaiyah Teacher Education Program at Tarbiyah and Teacher Training Faculty of UIN Alauddin Makassar. The results showed that the forms of academic cheating committed by the students while doing the exam are copying their friends’ work, opening book, copying friend’ task, open the internet via mobile phones, and doing copy-paste from the internet. The factors that lead to student academic cheating is the task given by the lecturers is very difficult and it needs text-book answers, the students affected by the presence of other students who cheat, questions given by the lecturers were too difficult, the time provided in the exam is very short, the students do not understand the material tested, they are unsure with their own answers, no penalty is given for cheating, and even the cheaters get good grades.

Akademik Usulsüzlük: Öğretmen Adaylarının Görüşleri ve Deneyimleri

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Muhammet ÖZDEN

2015-06-01

Full Text Available Bu araştırmanın amacı öğretmen adaylarının akademik usulsüzlük konusundaki görüş ve deneyimlerini belirlemektir. Araştırmada betimsel tarama modeli kullanılmıştır. Dumlupınar Üniversitesi’nde öğrenim gören 1119 öğretmen adayı üzerinde gerçekleştirilen araştırmanın verileri araştırmacılar tarafından geliştirilen anket yoluyla toplanmıştır. Veriler frekans, yüzde ve aritmetik ortalama kullanılarak çözümlenmiştir. Araştırma sonuçlarına göre öğretmen adaylarının yarıdan fazlası akademik usulsüzlüğün etik olmadığını (%59.2, engellenmesine yönelik önlemler alınması gerektiğini (%60.2 ve bu yönde bir davranış sergilediklerinde suçluluk duyduklarını (%53.5 belirtmiştir. Buna rağmen %95 oranında öğretmen adayının yükseköğretim hayatı boyunca akademik usulsüzlük içeren bir davranış sergilediği, sadece %7.1’inin öğretim elemanları tarafından uyarıldığı ve cezalandırıldığı görülmüştür. Öte yandan öğretmen adaylarının çoğunluğu akademik dürüstlüğün öğretilebileceğine (%55.9 ve öğretim elemanlarının ve gözetmenlerin tutumunun akademik usulsüzlük davranışlarında etkili olduğuna (%55.6 inanmaktadır. Öğretmen adaylarının sıklıkla gerçekleştirdikleri akademik usulsüzlük davranışları sınavlarda kopya çekme üzerine yoğunlaşmıştır. En sık gerçekleştirilen akademik usulsüzlük davranışları sınav sonrasında diğer sınıftaki öğrencilere sınavın içeriği hakkında bilgi vermek, bir başka öğrencinin sınav kâğıdına bakmasına izin vermek biçimindedir. Yüksek not alma isteği, içeriğin çok yoğun olması, dersi/konuyu anlayamama, yardıma gereksinim duyma, başarısız olma korkusu ve ailenin beklentilerine yanıt verme isteği, herkesin yaptığını bilmek ise öğretmen adaylarının akademik usulsüzlük yapmalarında en fazla etkili olan nedenler olarak belirlenmiştir.

Penilaian Tingkat Kemapanan Tata Kelola Teknologi Informasi Berbasis COBIT 4.1 Pada Layanan Portal Akademik Online (Studi Kasus : UIN Maulana Malik Ibrahim Malang

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Fachrul Kurniawan

2014-09-01

Full Text Available Pemanfaatan TI dalam dunia pendidikan merupakan hal yang sangat penting untuk menunjang kegiatan akademiknya. Termasuk juga di Universitas Islam Negeri Maulana Malik Ibrahim Malang yang terkenal dengan sistem administrasi akademik online atau biasa disebut siakad. Namun dalam pemanfatan tersebut belum bisa diketahui sejauh mana TI yang digunakan bisa mendukung proses bisnis yang ada di universitas, khususnya yang terkait dengan layanan akademik online. Oleh karena itu perlu adanya penilaian resmi dan prosedural terkait kualitas tata kelola TI pada layanan portal akademik online. Proses penilaian tata kelola TI ini menggunakan framework COBIT 4.1. Penelitian ini dilakukan di Lembaga Pengembangan Sistem Informasi (LPSI. Dalam proses penilaian tata kelola TI tersebut COBIT 4.1 menggunakan sistem pemetaan proses bisnis sehingga terpilih proses TI terkait COBIT atau dengan diagram value chain. Hasil dari pemetaan proses bisnis berdasarkan COBIT 4.1 terpilih proses TI DS1 Define and manage service levels dan DS4 Ensure continuous service sebagai acuan penilaian dengan hasil perhitungan tingkat kemapanan kedua proses TI pada level 3 (Defined. Namun LPSI memiliki keinginan dan harapan besar dalam meningkatkan tingkat kemapanan TI yang semakin baik, yaitu tata kelola yang optimal. Hal ini ditunjukkan dari hasil perhitungan tingkat kemapanan yang diharapkan (to-be , yaitu berada pada level 5 (Optimised. Kata kunci : tingkat kemapanan, tata kelola ti, COBIT, portal akademik online.

On Suspended matter grain size in Baltic sea

Science.gov (United States)

Bubnova, Ekaterina; Sivkov, Vadim; Zubarevich, Victor

2016-04-01

Suspended matter grain size data were gathered during the 25th research vessel "Akademik Mstislav Keldysh" cruise (1991, September-October). Initial quantitative data were obtained with a use of the Coulter counter and subsequently modified into volume concentrations (mm3/l) for size intervals. More than 80 samples from 15 stations were analyzed (depth range 0-355 m). The main goal of research was to illustrate the spatial variability of suspended matter concentration and dispersion in Baltic Sea. The mutual feature of suspended matter grain size distribution is the logical rise of particle number along with descending of particle's size. Vertical variability of grain size distribution was defined by Baltic Sea hydrological structure, including upper mixed layer - from the surface to the thermocline - with 35 m thick, cold intermediate layer - from the thermocline to the halocline- and bottom layer, which lied under the halocline. Upper layer showed a rise in total suspended matter concentration (up to 0.6 mm3/l), while cold intermediate level consisted of far more clear water (up to 0.1 mm3/l). Such a difference is caused by the thermocline boarding role. Meanwhile, deep bottom water experienced surges in suspended matter concentration owing to the nepheloid layer presence and "liquid bottom" effect. Coastal waters appeared to have the highest amount of particles (up to 5.0 mm3/l). Suspended matter grain size distribution in the upper mixed layer revealed a peak of concentration at 7 μ, which can be due to autumn plankton bloom. Another feature in suspended matter grain size distribution appeared at the deep layer below halocline, where both O2 and H2S were observed and red/ox barrier is. The simultaneous presence of Fe and Mn (in solutions below red/ox barrier) and O2 leads to precipitation of oxyhydrates Fe and Mn and grain size distribution graph peaking at 4.5 μ.

Keldysh field theory for driven open quantum systems.

Science.gov (United States)

Sieberer, L M; Buchhold, M; Diehl, S

2016-09-01

Recent experimental developments in diverse areas-ranging from cold atomic gases to light-driven semiconductors to microcavity arrays-move systems into the focus which are located on the interface of quantum optics, many-body physics and statistical mechanics. They share in common that coherent and driven-dissipative quantum dynamics occur on an equal footing, creating genuine non-equilibrium scenarios without immediate counterpart in equilibrium condensed matter physics. This concerns both their non-thermal stationary states and their many-body time evolution. It is a challenge to theory to identify novel instances of universal emergent macroscopic phenomena, which are tied unambiguously and in an observable way to the microscopic drive conditions. In this review, we discuss some recent results in this direction. Moreover, we provide a systematic introduction to the open system Keldysh functional integral approach, which is the proper technical tool to accomplish a merger of quantum optics and many-body physics, and leverages the power of modern quantum field theory to driven open quantum systems.

Perancangan Sistem Informasi Akademik Berbasis Mobile Web Studi Kasus di Program Studi Sistem Komputer Universitas Diponegoro

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Syariful Mujab

2014-01-01

Hasil dari perancangan ini adalah sebuah aplikasi sistem informasi akademik berbasis mobile web yang berguna untuk memudahkan mahasiswa dalam mendapatkan informasi akademik melalui perangkat bergerak, dari hasil pengujian blackbox didapatkan hasil bahwa aplikasi sudah dapat memberikan informasi sesuai dengan kebutuhan mahasiswa, seperti informasi KHS dan KRS, informasi jadwal, informasi matakuliah, informasi transkrip nilai. Pengujian juga menguji kompatibelitas dan user interface aplikasi, Pengujian kompatibelitas dan user interface diujikan pada sistem operasi android dari versi 2.2 sampai 4.2. Hasil dari pengujian user interface adalah user interface pada setiap sistem operasi android yang telah diuji tidak ada yang terpotong dan tampilan dapat menyesuaikan layar sedangkan pengujian kompatibelitas untuk android versi 4.0 sampai 4.2 aplikasi dapat terpasang dan fitur yang tersedia dapat berjalan dengan baik, sedangkan android dibawah versi 4.0 aplikasi dapat terpasang namun kopatibelitas kurang baik karna untuk fitur animasi tidak dapat berjalan.

Schwinger–Keldysh canonical formalism for electronic Raman scattering

Energy Technology Data Exchange (ETDEWEB)

Su, Yuehua, E-mail: suyh@ytu.edu.cn

2016-03-01

Inelastic low-energy Raman and high-energy X-ray scatterings have made great progress in instrumentation to investigate the strong electronic correlations in matter. However, theoretical study of the relevant scattering spectrum is still a challenge. In this paper, we present a Schwinger–Keldysh canonical perturbation formalism for the electronic Raman scattering, where all the resonant, non-resonant and mixed responses are considered uniformly. We show how to use this formalism to evaluate the cross section of the electronic Raman scattering off an one-band superconductor. All the two-photon scattering processes from electrons, the non-resonant charge density response, the elastic Rayleigh scattering, the fluorescence, the intrinsic energy-shift Raman scattering and the mixed response, are included. In the mean-field superconducting state, Cooper pairs contribute only to the non-resonant response. All the other responses are dominated by the single-particle excitations and are strongly suppressed due to the opening of the superconducting gap. Our formalism for the electronic Raman scattering can be easily extended to study the high-energy resonant inelastic X-ray scattering.

Pembuatan Aplikasi Portal Akademik Berbasis Mobile (Studi Kasus: D3 Manajemen Informatika FMIPA Universitas Riau

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Sukamto Sukamto

2017-11-01

Full Text Available AbstrakPenelitian ini membahas tentang aplikasi portal akademik berbasis mobile, studi kasus  pada D3 Manajemen Informatika Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Riau. Aplikasi ini dapat mempermudah mahasiswa khususnya mahasiswa D3 Manajemen Informatika dalam melakukan pengisian Kartu Rencana Studi dengan menggunakan Smartphone Android. Pembuatan Aplikasi  mobile ini menggunakan bahasa pemograman Java dan MySQL sebagai database. Sedangkan dalam perancangan aplikasi menggunakan Unified Modeling Language (UML yaitu Use Case Diagram, Class Diagram, Activity Diagram, dan Sequence Diagram. Kata kunci: Aplikasi Portal Akademik, Mobile, Kartu Rencana Studi, Smartphone Android. AbstractThis research discusses about Portal Academic Application based Android Mobile with case at Diploma of Information Management the Faculty of Mathematics and Natural Sciences, University of Riau. This application can facilitate in particular the Student Information Management Diploma in charging Card Study Plan that has been using smartphones based on Android. Making mobile applications using the programming language Java, and PHP, and then MySQL as database. While the design of the application using the Unified Modeling Language (UML, Use Case Diagrams, Class Diagrams, Activity Diagrams, and Sequence.   Keywords: Portal Academic Application, Android Mobile, Study Plan Card, Android Smatrphone.

Theory of the Franz-Keldysh effect in quantum wells

International Nuclear Information System (INIS)

Trallero Giner, C.

1986-09-01

We use the effective-mass approximation to obtain the imaginary part, ε 2 , of the dielectric constant of a quantum well in an applied electric field for direct transitions at a normal (M O ) threshold. The calculations of ε 2 are used to evaluate the real part, ε 1 , of the dielectric constant through the Kramers-Kronig relations. The changes in ε 1 and ε 2 due to the electric field are expressed in terms of the corresponding electrooptic functions. All magnitudes are obtained, neglecting excitonic effects, for electric fields both perpendicular to and in the plane of the layers. We show that for fields parallel to the layers the electrooptic functions turn out to be a superposition of two-dimensional Franz-Keldysh ones. The electrooptic functions for fields perpendicular to the layers show a qualitatively different behaviour from those observed in bulk semiconductors. Analytic expressions for the Lorentzian broadening of ε 1 and ε 2 are given in terms of complex valued electrooptic functions of complex argument. (author)

Desain Sistem Semantic Data Warehouse dengan Metode Ontology dan Rule Based untuk Mengolah Data Akademik Universitas XYZ di Bali

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Made Pradnyana Ambara

2016-06-01

Full Text Available Data warehouse pada umumnya yang sering dikenal data warehouse tradisional mempunyai beberapa kelemahan yang mengakibatkan kualitas data yang dihasilkan tidak spesifik dan efektif. Sistem semantic data warehouse merupakan solusi untuk menangani permasalahan pada data warehouse tradisional dengan kelebihan antara lain: manajeman kualitas data yang spesifik dengan format data seragam untuk mendukung laporan OLAP yang baik, dan performance pencarian informasi yang lebih efektif dengan kata kunci bahasa alami. Pemodelan sistem semantic data warehouse menggunakan metode ontology menghasilkan model resource description framework schema (RDFS logic yang akan ditransformasikan menjadi snowflake schema. Laporan akademik yang dibutuhkan dihasilkan melalui metode nine step Kimball dan pencarian semantic menggunakan metode rule based. Pengujian dilakukan menggunakan dua metode uji yaitu pengujian dengan black box testing dan angket kuesioner cheklist. Dari hasil penelitian ini dapat disimpulkan bahwa sistem semantic data warehouse dapat membantu proses pengolahan data akademik yang menghasilkan laporan yang berkualitas untuk mendukung proses pengambilan keputusan.

SISTEM PAKAR BERBASIS ATURAN DALAM BIMBINGAN PENASEHAT AKADEMIK MENGGUNAKAN METODE FORWARD CHAINING

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Bayu Febriadi

2016-02-01

Full Text Available AbstrakPenasehat Akademik merupakan Proses Pengisian kartu rencana study bagi mahasiswa yang akan mengambil matakuliah apa yang akan diambil untuk semester selanjutnya. Sebelum terjadinya proses belajar mengajar (PBM berlangsung pada awal semester, kegiatan rutin yang dilakukan adalah adalah penyusunan matakuliah bagi mahasiswa. rancangan sistem ini menggunakan inference forward chaining, dengan implementasi sistem menggunakan sistem database MySQL dan bahasa pemrograman PHP. Forward Chaining adalah metode inference enggine yang mencocokan fakta atau pernyataan dimulai dari bagian sebelah kiri (IF dulu. Dengan kata lain, penalaran dimulai dari fakta terlebih dahulu untuk menguji kebenaran hipotesis. Tesis ini membangun suatu sistem pakar berbasis aturan dalam penyusunan Kartu Rencana Study (KRS bagi mahasiswa khususnya yang akan mengambil matakuliah menggunakan metode forward chaining. Tujuan untuk membantu mahasiswa yang belum tahu dalam pengisian kartu rencana study tanpa langsung bertemu dengan dosen pembimbing akademik nya dalam pengambilan matakuliah.Kata kunci : sistem pakar, forward chaining, matakuliahAbstractAcademic adviser is a card charging process study plans for students who will take courses which will be taken for the next semester. Prior to the teaching and learning process (PBM took place at the beginning of the semester, is a routine activity undertaken is the preparation course for students. The system design uses forward chaining inference, with the implementation of the system using MySQL database system and the PHP programming language. Forward Chaining is a method of inference enggine that match facts or statements starting from the left (first IF. In other words, reasoning from facts first started to test the truth of the hypothesis. This thesis build a rule-based expert system in preparation Card Study Plan (KRS for students who will take courses in particular using forward chaining method. Aim to help students who do

PERBANDINGAN PROKRASTINASI AKADEMIK MENURUT PILAHAN JENIS KELAMIN DI UIN SUNAN KALIJAGA YOGYAKARTA

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Muhammad Johan Nasrul Huda

2016-03-01

Full Text Available Salah satu topik penelitian yang paling sering tentang prokrastinasi adalah prokrastinasi akademik. Prokrastinasi adalah perilaku sukarela untuk menunda tindakan, meskipun ia telah mampu memprediksi bahwa penundaan akan membuat hal-hal buruk. Artikel ini membahas perilaku siswa yang menunda sejumlah tugas akademik sampai di dekat batas waktu untuk pengajuan tugas, atau sampai mereka mendapatkan peringatan yang berhubungan dengan mereka dalam tindakan. Berdasarkan survei tahun 2010 pada mahasiswa Universitas Islam Negeri. ditemukan ada perbedaan persentase antara mahasiswa laki-laki dan perempuan dari kelas 2004/2005. Persentase prokrastinasi siswa laki-laki sebanyak 78,5% sedangkan siswa perempuan yang menunda studinya sebanyak 21,5%. Hal ini kemudian dapat disimpulkan bahwa untuk siswa kelas 2004/2005, siswa laki-laki sering menunda studi mereka dibandingkan dengan yang perempuan. fenomena di UIN Sunan Kalijaga adalah bukti prestasi siswa perempuan dalam pendidikan ditandai kemampuan siswa perempuan ‘untuk menyelesaikan studi lebih cepat dibandingkan laki-laki. One of the most frequent research topic of procrastination is academic procrastination. Procrastination is a voluntary behavior to delay an action, though she/he has been able to predict that the delay will make things Worse. This article examines the behavior of students who put off a number of academic duties until near the deadline for submission of assignments, or until they get a warning related to their in action. Based on the survey in 2010 at the State Islamic University student. it is found there is a difference in the percentage between male and female students of class 2004/2005. Percentage of male students of procrastination as much as 78.5% while the female students who put off her studies as much as 21.5%. It can then be concluded that for the students of class Z004/2005, male students often postpone their studies compared with the female ones. the phenomenon at UIN

Keldysh meets Lindblad: Correlated Gain and Loss in Higher Order Perturbation Theory

Science.gov (United States)

Stace, Tom; Mueller, Clemens

Motivated by correlated decay processes driving gain, loss and lasing in driven artificial quantum systems, we develop a theoretical technique using Keldysh diagrammatic perturbation theory to derive a Lindblad master equation that goes beyond the usual second order perturbation theory. We demonstrate the method on the driven dissipative Rabi model, including terms up to fourth order in the interaction between the qubit and both the resonator and environment. This results in a large class of Lindblad dissipators and associated rates which go beyond the terms that have previously been proposed to describe similar systems. All of the additional terms contribute to the system behaviour at the same order of perturbation theory. We then apply these results to analyse the phonon-assisted steady-state gain of a microwave field driving a double quantum-dot in a resonator. We show that resonator gain and loss are substantially affected by dephasing- assisted dissipative processes in the quantum-dot system. These additional processes, which go beyond recently proposed polaronic theories, are in good quantitative agreement with experimental observations.

Hydrochemical data from R/V MIKHAIL LOMONSOV and R/V AKADEMIK VERNADSKIY in the Indian Ocean from 16 May 1966 to 01 October 1981 (NODC Accession 0000277)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — Hydrochemical data were collected from R/V MIKHAIL LOMONSOV and R/V AKADEMIK VERNADSKIY in the Indian Ocean from 16 May 1966 to 01 October 1981. Data were collected...

Correlated Keldysh-Faisal-Reiss theory of above-threshold double ionization of He in intense laser fields

International Nuclear Information System (INIS)

Becker, A.; Faisal, F.H.M.

1994-01-01

We have developed a correlated Keldysh-Faisal-Reiss theory of laser-induced double ionization of a two-electron atom. The basic N-photon T matrix and the expression for N-photon triple-differential rates or cross sections (TDCS's) are derived. The theory is applied to investigate the TDCS's for very-high-order multiphoton double ionization of He with lasers of wavelength λ=248 nm and λ=617 nm. Comparison with the uncorrelated results reveals a dramatic influence of the final-state e-e correlation on the above-threshold TDCS's to be measured in coincidence experiments in intense laser fields. The limiting case of the TDCS's for weak-field double ionization of He by a synchrotron photon is also investigated; the results confirm the earlier theoretical findings and recent experimental results in that case

PENERAPAN REKAYASA ULANG ITERATIF PADA SISTEM INFORMASI AKADEMIK FTIF ITS SURABAYA

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Siti Rochimah

2006-01-01

Full Text Available Normal 0 false false false IN X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Selama penggunaannya, sistem warisan (legacy dapat terjadi banyak aktifitas pemeliharaan (maintenance yang dapat menyebabkan penurunan kualitas sistem. Ketika sistem mengalami penurunan sampai tingkat kritis, sistem warisan perlu direkayasa ulang.Untuk mempertahankan keberadaan dan keberlangsungan sistem perlu dilakukan rekayasa ulang secara bertahap dalam domain aplikasi sistem warisan. Dalam prosesnya, pada sistem warisan dilakukan rekayasa ulang komponen demi komponen baik program maupun data membentuk sistem tujuan yang telah direkayasa ulang. Proses ini berakhir sampai akhirnya sistem warisan habis menjadi sistem tujuan. Metode ini dinamakan Rekayasa Ulang Iteratif. Metode Rekayasa Ulang Iteratif memperhatikan satu hal yang sangat penting dari metode rekayasa ulang lain yaitu memastikan pembagian data dan fungsi antara sistem warisan dan sistem yang telah direkayasa ulang. Selain itu selama proses rekayasa ulang antara komponen warisan dan komponen yang telah direkayasa ulang dapat berjalan bersamaan. Implementasi dari Rekayasa Ulang Iteratif dalam penelitian ini dilakukan pada studi kasus Sistem Informasi Akademik FTIF ITS Surabaya. Hasil dari Rekayasa Ulang Iteratif ini telah dapat menyelesaikan

Schwinger's quantum action principle from Dirac’s formulation through Feynman’s path integrals, the Schwinger-Keldysh method, quantum field theory, to source theory

CERN Document Server

Milton, Kimball A

2015-01-01

Starting from the earlier notions of stationary action principles, these tutorial notes shows how Schwinger’s Quantum Action Principle descended from Dirac’s formulation, which independently led Feynman to his path-integral formulation of quantum mechanics. Part I brings out in more detail the connection between the two formulations, and applications are discussed. Then, the Keldysh-Schwinger time-cycle method of extracting matrix elements is described. Part II will discuss the variational formulation of quantum electrodynamics and the development of source theory.

Akademik Yazma Açısından Tez Yazım Kılavuzları

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Kemalettin DENİZ

2017-04-01

Full Text Available Akademik yazmanın tez, makale, bildiri, proje ve poster gibi türleri vardır. Bu türler genellikle bir araştırma sürecinin kompozisyon hâlinde raporlaştırılmasıyla oluşur. Kendi içinde bir sistematiği olan akademik yazmanın yazma süreci açısından en uzun olanı tezlerdir. Tez yazımında tez bölümlerinin nasıl şekillenmesi gerektiğine enstitülerin yayımladığı tez yazım kılavuzlarında yer verilmektedir. Bu çalışmanın amacı, tez yazım kılavuzlarını akademik yazma açısından değerlendirmektir. Araştırma nitel araştırma olarak planlanmış ve araştırmada doküman analizi kullanılmıştır. Araştırmanın evreni eğitim bilimleri alanındaki tez yazım kılavuzlarıdır. Örneklemi tesadüfi olarak belirlenmiş 15 üniversitenin eğitim bilimleri enstitüsü tez yazım kılavuzları oluşturmaktadır. Bulgulara ulaşmak için 15 tez yazım kılavuzuna yönelik içerik analizi yapılmıştır. Çalışmada öncelikle tez yazım kılavuzlarından elde edilen veriler kodlanmıştır. Daha sonra kodlanan veriler bir araya getirilerek gruplandırılmıştır. Bu gruplamadan yola çıkarak temalara ulaşılmıştır. Ortaya çıkan kodlar ve temalar düzenlenmiş, frekans ve yüzde dağılımları eklenmiştir. Araştırma sonucunda, eğitim bilimleri enstitüleri alanında yayımlanan tez yazım kılavuzlarında tezin bölümlerine yönelik verilen bilgilerde farklılıklar olduğu belirlenmiştir. Araştırmada ulaşılan kategorilerin tez yazım kılavuzlarında yer alma aralığının %6,6’dan %100’e kadar geniş bir çizgide seyrettiği belirlenmiştir. Ayrıca tezlerdeki giriş, yöntem, gelişme ve sonuç bölümlerine yönelik yapılar ile tezlerin dil ve anlatım özelliklerinin nasıl olacağı konusunda kılavuzların yeterli olmadığı görülmüştür. Araştırmada ulaşılan sonuçların tez yazım kılavuzlarındaki birliğin sağlanması açısından faydalı olacağı düşünülmektedir.

Zihinsel Yetersizliği Olan Öğrencilerin İşlevsel Akademik Becerilerine İlişkin Türkiye’de Yapılan Lisansüstü Tezlerin Gözden Geçirilmesi

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Hakan Özak

2010-01-01

Full Text Available İşlevsel akademik beceriler bireyin toplumda bağımsız bir birey olarak yaşayabilmesi ve çalışabilmesi için gerekli olan becerilerdir. Türkiye’de zihinsel yetersizliği olan öğrencilerle yapılan lisansüstü tez çalışmaları incelendiğinde, işlevsel akademik becerilere ilişkin tez çalışmalarının yürütüldüğü görülmekte; ancak, bu tezlerin ayrıntılı olarak incelendiği bir çalışmaya rastlanılmamıştır. Bu gereksinimden yola çıkarak, bu çalışmada zihinsel yetersizliği olan öğrencilerin işlevsel akademik becerilerine ilişkin Türkiye’de gerçekleştirilen lisansüstü tezler incelenmiştir. Türkiye’de zihinsel yetersizliği olan öğrencilerin işlevsel akademik becerilerine ilişkin 29 lisansüstü teze ulaşılmıştır. Ulaşılan tezlerin 17 tanesi okuma-yazma becerileri (14 yüksek lisans, 3 doktora ve 12 tanesi de (9 yüksek lisans, 3 doktora matematik becerilerini konu almaktadır. Tezler, öğretim yapılan akademik becerilerin alanı, deneklerin özellikleri, yönteme ilişkin özellikler, modele ilişkin özellikler, bulgulara ilişkin özellikler olmak üzere incelenmiş, bulgular ileriye dönük öneriler ışığında tartışılmıştır. Functional academic skills are the ones that an individual needs to have and show in order to live independently in society. While checking master thesis and doctoral dissertations carried out with individuals with intellectual disabilities in Turkey, it was found that there have been master thesis and doctoral dissertations on functional academic skills of students with intellectual disabilities in Turkey. However, it was also recognized that there is no study reviewing these studies. Therefore, the purpose of this study is to review master thesis and doctoral dissertations on functional academic skills of students with intellectual disabilities in Turkey. It was found that out of 29 studies conducted in Turkey, 17 are on reading

Akademik Başarının Arttırılmasında Aile Katılımı

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Bahar Keçeli-Kaysılı

2008-01-01

Full Text Available Çocukların başarılarının arttırılmasını amaçlayan aile katılımı, ailelerin konuya özgü becerileri öğrenmelerinden aile içinde uygun ilişkilerin geliştirilmesine kadar pek çok becerinin kazandırılmasını kapsamaktadır. Aile katılımının her ne kadar yasalarda geçen hükümlerle gerekliliği belirlenmiş olsa da uygulama alanında günümüzde halen pek çok ülke için katılımın sağlanması güç olmaktadır. Alan yazında aile katılımının akademik başarıya etkisine yönelik birbiriden farklı sonuçlarla karşılaşılmıştır. Bunun nedeni aile katılımı kavramının, pek çok değişkeni barındırıyor olması ve bu kavramın farklı şekillerde tanımlanıyor olmasıdır. Her ne kadar aile katılımının hangi bileşeninin akademik başarıya etki ettiği açıkça ortaya konulamasa da araştırma bulguları aile katılımının öğrencilerin akademik becerilerini arttırdığını göstermektedir. Bu alan yazın taramasında aile katılımı ve akademik başarı tanımlanmış, aile katılımını engelleyen etmenler, açıklanmaya çalışılmıştır. Aile katılımının akademik başarıya etkisini gösteren çalışmalara ayrıntılı olarak yer verilmiş, bu çalışmaların bulduğu farklı sonuçlar ve nedenleri tartışılmıştır. Aile katılımının sağlanması, ekolojik bakış açısı ve sistem yaklaşımı bağlamında ele alınarak, okul açısından aile katılımını destekleyici stratejilere değinilmiştir. Parental involvement, which aims to increase the academic achievement of children, encompasses a wide of range of skills from the families’ learning the relevant skills to the development of appropriate relationships within the family. Although the need for parental involvement is stipulated by clauses in various laws, in practice, participation is not fully established yet in many countries. The literature of the field has various findings regarding the impact of

Analytical formulation for modulation of time-resolved dynamical Franz-Keldysh effect by electron excitation in dielectrics

Science.gov (United States)

Otobe, T.

2017-12-01

Analytical formulation of subcycle modulation (SCM) of dielectrics including electron excitation is presented. The SCM is sensitive to not only the time-resolved dynamical Franz-Keldysh effect (Tr-DFKE) [T. Otobe et al., Phys. Rev. B 93, 045124 (2016), 10.1103/PhysRevB.93.045124], which is the nonlinear response without the electron excitation, but also the excited electrons. The excited electrons enhance the modulation with even harmonics of pump laser frequency, and generate the odd-harmonics components. The new aspect of SCM is a consequence of (i) the interference between the electrons excited by the pump laser and those excited by the probe-pulse laser and (ii) oscillation of the generated wave packed by the pump laser. When the probe- and pump-pulse polarizations are parallel, the enhancement of the even harmonics and the generation of the odd-harmonics modulation appear. However, if the polarizations are orthogonal, the effect arising from the electron excitations becomes weak. By comparing the parabolic and cosine band models, I found that the electrons under the intense laser field move as quasifree particles.

PENINGKATAN KOMPETENSI PEDAGOGIK GURU DAN KEMAMPUAN AKADEMIK SISWA MELALUI LESSON STUDY

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Eka Andriani

2016-11-01

Full Text Available This study aims to improve teachers' pedagogical competence and academic achievement of students through lesson study based learning. The design of this study is classroom action research method of observation and written tests. The data were analyzed by quantitative descriptive. The research was conducted on a geography teacher and students of class XI social science programe specialization courses in high school. The results showed an increase pedagogical competence of teachers of the first cycle to the second cycle. This can be seen from the ability of teachers prepare lesson plans and implementing learning. Based learning lesson study also impact on improving the academic skills of students in the form of activity and learning outcomes. Penelitian ini bertujuan untuk meningkatkan kompetensi pedagogik guru dan prestasi akademik siswa melalui pembelajaran berbasis lesson study. Rancangan penelitian ini adalah penelitian tindakan kelas dengan metode observasi dan tes tertulis. Data dianalisis secara deskriptif kuantitatif. Penelitian ini dilakukan pada guru Geografi dan siswa kelas XI program peminatan ilmu sosial di SMA. Hasil penelitian menunjukkan adanya peningkatan kompetensi pedagogik guru dari siklus I ke siklus II. Hal ini bisa dilihat dari kemampuan guru menyusun RPP dan melaksanakan pembelajaran. Pembelajaran berbasis lesson study juga berdampak pada peningkatan kemampuan akademis siswa berupa aktivitas dan hasil belajar.

pH, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, bottle and other instruments from the AKADEMIK SERGEY VAVILOV in the South Atlantic Ocean from 2004-11-04 to 2004-12-08 (NODC Accession 0113753)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0113753 includes chemical, discrete sample, physical and profile data collected from AKADEMIK SERGEY VAVILOV in the South Atlantic Ocean from...

Historical temperature, salinity, oxygen, pH, and meteorological data collected from Former Soviet Union platforms Lomonosov, Murmanets, and Akademik Shokalsky in 1933 - 1962 years from Arctic Ocean, Barents Sea, Bering Sea, Chukchi Sea, East Siberian Sea, Kara Sea, and Laptev Sea (NODC Accession 0108117)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — Historical temperature, salinity, oxygen, pH, and meteorological data collected from Former Soviet Union platforms Lomonosov,Murmanets, and Akademik Shokalsky in...

Dissolved inorganic carbon, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, bottle and other instruments from the AKADEMIK FYODOROV in the East Siberia Sea and Laptev (or Nordenskjold) Sea from 1994-07-05 to 1994-08-08 (NODC Accession 0113884)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0113884 includes chemical, discrete sample, physical and profile data collected from AKADEMIK FYODOROV in the East Siberia Sea and Laptev (or...

PENGARUH PEMAHAMAN KURIKULUM, SUPERVISI AKADEMIK, DAN FASILITAS KERJA TERHADAP KINERJA GURU EKONOMI SMA/MA NEGERI DI KOTA MAGELANG

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Oky Estiana Putri

2016-02-01

Full Text Available Pada era globalisasi dewasa ini pendidikan menjadi sangatpenting. Bekal pendidikan yang dimiliki suatu masyarakat akan berkembang secara baik, dan tidak dapat dipungkiri masyarakat tersebut semakin berkualitas sertamampu bersaing secara kompetitif di era persaingan yang semakin ketat. Dalam suasana kompetitif semacam ini diperlukan sumber daya yang berkualitas. Untuk menciptakan sumber daya berkualitas diperlukan pendidik yang profesional. Keprofesionalan seorang pendidik dapat dilihat melalui kinerjanya yang baik. Kondisi di lapangan, kinerja guru di Kota Magelang masih belum optimal. Populasi penelitian ini adalah guru mata pelajaran Ekonomi/Akuntasi SMA/MA Negeri di Kota Magelang yang berjumlah 30 orang. Metode pengumpulan data menggunakan kuesioner. Data variabel dianalisis dengan statistik deskriptif dan analisis regresi berganda. Hasil penelitian menunjukkan bahwa pemahaman kurikulum, supervisi akademik, dan fasilitas kerja berpengaruh secara simultan terhadap kinerja guru sebesar 82,8%. Pengaruh secara parsial juga didapatkan pada variable independen terhadap variabel dependen. Pemahaman kurikulum berpengaruh positif dan signifikan terhadap kinerja guru ekonomi SMA/MA Negeri sebesar 24,70%. Supervisi akademik berpengaruh positif dan signifikan terhadap kinerja guru ekonomi SMA/MA Negeri sebesar 19,54%, serta fasilitas kerja berpengaruh positif dan signifikan terhadap kinerja guru sebesar 23,42%. Saran yang dapat diberikan adalah para guru hendaknya lebih meningkatkan pemahaman kurikulum supaya kinerjanya semakin baik. Bagi kepala sekolah hendaknya lebih memperhatikan lagi guru-guru dengan kegiatan supervisi akademik, dengan merasa diperhatikan, mendapat dorongan dan bantuan dari kepala sekolah guru akan lebih berusaha meningkatkan kinerjanya menjadi semakin baik. Sekolah hendaknya menyediakan fasilitas kerja yang lebih baik lagi, nyaman dan lengkap supaya guru merasa puas dan kinerjanya akan semakin baik. In the era of globalization

Dynamical equations for time-ordered Green’s functions: from the Keldysh time-loop contour to equilibrium at finite and zero temperature

International Nuclear Information System (INIS)

Ness, H; Dash, L K

2012-01-01

We study the dynamical equation of the time-ordered Green’s function at finite temperature. We show that the time-ordered Green’s function obeys a conventional Dyson equation only at equilibrium and in the limit of zero temperature. In all other cases, i.e. finite temperature at equilibrium or non-equilibrium, the time-ordered Green’s function obeys instead a modified Dyson equation. The derivation of this result is obtained from the general formalism of the non-equilibrium Green’s functions on the Keldysh time-loop contour. At equilibrium, our result is fully consistent with the Matsubara temperature Green’s function formalism and also justifies rigorously the correction terms introduced in an ad hoc way with Hedin and Lundqvist. Our results show that one should use the appropriate dynamical equation for the time-ordered Green’s function when working beyond the equilibrium zero-temperature limit.

Dissolved inorganic carbon, pH, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, bottle and other instruments from AKADEMIK ALEKSANDR NESMEYANOV in the North Pacific Ocean and Sea of Okhotsk from 1993-08-08 to 1993-09-21 (NODC Accession 0115169)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — NCEI Accession 0115169 includes discrete sample and profile data collected from AKADEMIK ALEKSANDR NESMEYANOV in the North Pacific Ocean and Sea of Okhotsk from...

PENGARUH PRESTASI AKADEMIK MATA DIKLAT PRODUKTIF AKUNTANSI, PRAKTIK KERJA INDUSTRI, DAN LINGKUNGAN KELUARGA TERHADAP KESIAPAN KERJA SISWA KELAS XII SMK NEGERI 1 KEBUMEN PROGRAM KEAHLIAN AKUNTANSI TAHUN AJARAN 2014/2015

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Ulinnajah Sofia Handayani

2015-11-01

Full Text Available SMK merupakan salah satu lembaga pendidikan kejuruan yang diselenggarakan dalam rangka mempersiapkan calon tenaga kerja untuk bekerja dalam bidang tertentu. Data SMK N 1 Kebumen menunjukkan adanya peningkatan lulusan SMK yang belum mendapatkan pekerjaan dari tahun 2013 ke 2014 sebesar 4%. Tujuan dari penelitian ini adalah untuk mengetahui ada tidaknya pengaruh prestasi akademik mata diklat produktif akuntansi, praktik kerja industri, dan lingkungan keluarga terhadap kesiapan kerja siswa kelas XII SMK Negeri 1 Kebumen program keahlian akuntansi.Populasi penelitian ini adalah siswa kelas XII Akuntansi sejumlah 120 siswa dan jumlah sampel sebanyak 92 siswa yang diambil dengan teknik pengambilan sampel proportional Random Sampling. Metode yang digunakan dalam pengambilan data adalah angket dan dokumentasi. Data variabel dianalisis dengan regresi berganda. Hasil penelitian ini menunjukkan bahwa terdapat pengaruh prestasi akademik mata diklat produktif akuntansi, praktik kerja industri dan lingkungan keluarga terhadap kesiapan kerja siswa SMK Negeri 1 Kebumen sebesar 34,3%. Prestasi akademik mata diklat produktif akuntansi berpengaruh sebesar 6,16%. Praktik kerja industri berpengaruh sebesar 25,4%. Sedangkan lingkungan keluarga berpengaruh sebesar 9,86%. Vocational High School one of the educational institution that prepares the students to work in particular filed. Data of vocational high school 1 Kebumen show the increase students graduated from vocational high school have not gotten the job yet from 2013 to 2014 with amount 4%. The purpose of this study is to know whether there is influence of academic achievement accounting productive subject, on the job trining, and environmental family toward working readiness of the twelfth graders at state vocational high school 1 Kebumen who are taking accountancy program. The population in this study were students twelfth graders who are taking accountancy program with amount 120 students and the members of

Partial pressure (or fugacity) of carbon dioxide, dissolved inorganic carbon, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, bottle and other instruments from the AKADEMIK IOFFE in the South Pacific Ocean from 1992-02-14 to 1992-04-06 (NODC Accession 0115013)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0115013 includes chemical, discrete sample, physical and profile data collected from AKADEMIK IOFFE in the South Pacific Ocean from 1992-02-14 to...

PEMODELAN ARSITEKTUR ENTERPRISE MENGGUNAKAN TOGAF ADM UNTUK MENDUKUNG SISTEM INFORMASI PROSES AKADEMIK PADA UNIVERSITAS MUHAMMADIYAH PONOROGO

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Hendrik Kusbandono

2016-05-01

Full Text Available Pengembangan EA di perguruan tinggi merupakan pekerjaan yang besar dan penuh dengan tantangan, salah satu tantangan tersebut adalah tuntutan manajemen dan stakeholder. Solusi dari masalah tersebut adalah pemodelan EA yang memandang elemen-elemen yang berbeda dalam suatu perguruan tinggi secara keseluruhan sebagai satu kesatuan. Penerapan EA bertujuan untuk menciptakan keselarasan antara bisnis dan TI bagi kebutuhan organisasi dan tidak bisa dilepaskan bagaimana organisasi tersebut membuat dan merencanakan enterprise. Penggunaan dan pemilihan framework EA yang tepat akan mempercepat danmenyederhanakan pengembangan arsitektur dalam pengembangan di masa depan sebagai respon terhadap kebutuhan bisnis. TOGAF ADM merupakan sebuah framework yang kompleks yang mampu memenuhi seluruh kebutuhan pengembangan EA, juga memiliki metode yang umum, menerima penggabungan dengan framework lain, sehingga dapat menghasilkan arsitektur yang spesifik terhadap kebutuhan organisasi. Pemodelan EA pada proses akademik di UMP menghasilkan blueprint arsitektur bisnis, data, aplikasi, dan teknologi. Dengan proses tahapan TOGAF ADM pada Fase Persiapan menghasilkan prinsip (bisnis, data, aplikasi, dan teknologi, pada Fase Visi Arsitektur menghasilkan visi arsitektur (bisnis, data, aplikasi, dan teknologi, pada Fase Arsitektur Bisnis menghasilkan blueprint arsitektur bisnis, pada Fase Arsitektur Sistem Informasi menghasilkan blueprint arsitektur sistem informasi berupa data dan aplikasi, sedangkan Fase Arsitektur Teknologi menghasilkan blueprint arsitektur teknologi.

Partial pressure (or fugacity) of carbon dioxide, salinity and other variables collected from Surface underway observations using Carbon dioxide (CO2) gas analyzer, Shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement and other instruments from AKADEMIK KOROLYOV, NOAA Ship DISCOVERER and NOAA Ship OCEANOGRAPHER in the Bass Strait, Bering Sea and others from 1986-05-21 to 1989-04-20 (NODC Accession 0000071)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — NCEI Accession 0000071 includes Surface underway, chemical, meteorological and physical data collected from AKADEMIK KOROLYOV, NOAA Ship DISCOVERER and NOAA Ship...

Power-law tails and non-Markovian dynamics in open quantum systems: An exact solution from Keldysh field theory

Science.gov (United States)

Chakraborty, Ahana; Sensarma, Rajdeep

2018-03-01

The Born-Markov approximation is widely used to study the dynamics of open quantum systems coupled to external baths. Using Keldysh formalism, we show that the dynamics of a system of bosons (fermions) linearly coupled to a noninteracting bosonic (fermionic) bath falls outside this paradigm if the bath spectral function has nonanalyticities as a function of frequency. In this case, we show that the dissipative and noise kernels governing the dynamics have distinct power-law tails. The Green's functions show a short-time "quasi"-Markovian exponential decay before crossing over to a power-law tail governed by the nonanalyticity of the spectral function. We study a system of bosons (fermions) hopping on a one-dimensional lattice, where each site is coupled linearly to an independent bath of noninteracting bosons (fermions). We obtain exact expressions for the Green's functions of this system, which show power-law decay ˜|t - t'|-3 /2 . We use these to calculate the density and current profile, as well as unequal-time current-current correlators. While the density and current profiles show interesting quantitative deviations from Markovian results, the current-current correlators show qualitatively distinct long-time power-law tails |t - t'|-3 characteristic of non-Markovian dynamics. We show that the power-law decays survive in the presence of interparticle interaction in the system, but the crossover time scale is shifted to larger values with increasing interaction strength.

Sosyal bilgiler derslerinde belgesel film kullanımının akademik başarıya ve bilinçli farkındalık düzeylerine etkisi [The effect of using documentaries in social studies lesson on the levels of academic success and mindfulness

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Özlem BEKTAŞ-ÖZTAŞKIN

2013-10-01

Full Text Available Bu çalışmada, Sosyal Bilgiler derslerinde belgesel film kullanımının akademik başarıya ve bilinçli farkındalık düzeylerine etkisi araştırılmıştır. Araştırma, deneysel araştırma modellerinden biri olan ön test-son test kont¬rol gruplu deneme modeline göre desenlenmiştir. Araştırmaya 2012-2013 öğretim yılında Erzincan il merkezinde yer alan Bahçelievler Ortaokulu altıncı sınıf öğrencileri katılmıştır. Deney ve kontrol gruplarında toplam 54 öğrenci araştırmaya alınmıştır. Deneysel işlem altı hafta sürmüştür. Araştırmacı tarafından dersin konularına paralel olarak ve ders içeriğine özgün hazırlanan belgeseller deney grubuna sunulmuştur. Araştırmada veri toplama aracı olarak araştırmacı tarafından geliştirilen ve 6. sınıf öğrencilerinin Sosyal Bilgiler Dersi akademik başarı düzeylerini belirlemeyi amaçlayan “Yeryüzünde Yaşam Ünitesi Akademik Başarı Testi”, Brown ve Ryan (2003 tarafından geliştirilen Özyeşil, Arslan, Kesici ve Deniz (2011 tarafından Türkçe’ye uyarlanan “Bilinçli Farkındalık Ölçeği (BİFÖ” kullanıl¬mıştır. Gruplar; Sosyal Bilgiler Dersi Başarı Testi ve Bilinçli Farkındalık Ölçeği öntest sonuçları dikkate alınarak eşitlen¬miştir. Sonuç olarak akademik başarı düzeyleri açısından deney grubunun, kontrol grubuna göre daha başarılı olduğu Sosyal Bilgiler derslerinde belgesel film bilinçli farkındalıkları üzerinde olumlu yönde etkili olduğu tespit edilmiştir.

Webquest (Web macerası öğrenme yönteminin Türkçe dersindeki akademik başarı ve tutuma etkisi / Effect of WebQuest learning method on academic success and attitude in Turkish lessons

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Abdullah ŞAHİN

2012-12-01

Full Text Available ÖZETAraştırmanın amacı, Web Macerası öğretim yönteminin 6.sınıf öğrencilerinin Türkçe dersi akademik başarı düzeylerinde ve Türkçe dersine yönelik tutumlarında bir etkiye sahip olup olmadığını incelemektir. Araştırma, 2008-2009 öğretim yılında Erzurum il merkezinde bulunan Şair Nef’i İlköğretim Okulunda öğrenim gören 20 deney grubunda, 20 kontrol grubunda olmak üzere toplam 40 öğrenci üzerinde gerçekleştirilmiştir. Araştırma ön test- son test kontrol gruplu deneysel desende tasarlanmıştır. Araştırmada biri deney diğeri kontrol grubu olmak üzere toplam iki grup yer almaktadır. Araştırmada veri toplama aracı olarak araştırmacı tarafından geliştirilen ve 6. sınıf öğrencilerinin Türkçe dersi akademik başarı düzeylerini belirlemeyi amaçlayan “Türkçe Dersi Başarı Testi”, Acat (2000 tarafından geliştirilen öğrencilerin Türkçe dersine yönelik tutumlarını belirlemeyi amaçlayan “Türkçe Dersine İlişkin Tutum Ölçeği” ve grupların denkleştirilmesinde kullanılan ve araştırmacı tarafından oluşturulan “Kişisel Bilgi Formu” kullanılmıştır. Araştırma sonunda Web Macerası öğretim yönteminin 6. sınıf öğrencilerinin Türkçe dersine ilişkin akademik başarı düzeylerini ve Türkçe dersine yönelik tutumlarını yükseltmede etkili olduğu sonucuna ulaşılmıştır.

MANAJEMEN KEARSIPAN DINAMIS DI BIRO ADMINISTRASI UMUM AKADEMIK DAN KEMAHASISWAAN (BAUAK IAIN WALISONGO SEMARANG

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Ahmad Farid Mubarrok

2015-06-01

Full Text Available Penelitian ini dilatarbelakangi oleh sebuah pemikiran bahwa masalah yang ditemukan di lapangan pada saat mengimplementasikan pedoman-pedoman dan kegiatan pengembangan arsip dan dokumen terhadap pengelolaan arsip di lingkungan BAUAK IAIN Walisongo Semarang fokus penelitian ini adalah bagaimana manajemen kearsipan dinamis di Biro Umum Akademik dan Kemahasiswaan (BAUAK IAIN Walisongo Semarang ? Hasil penelitian menunjukkan bahwa proses pencatatan kearsipan di BAUAK IAIN Walisongo Semarang menggunakan asas sentralisasi dan asas desentralisasi. Proses pengendalian arsip masih dalam tahap pemeliharaan arsip. Proses penyimpanan kearsipan menggunakan sistem abjad dan sistem pokok soal. Proses pemeliharaan kearsipan menggunakan rak dan lemari arsip dari bahan best ,dengan kata lain, pelaksanaan manajemen kearsipan di BAUAK IAIN Walisongo Semarang belum terlalu baik sesuai dengan standar yang efektif dan efisien. Proses pemindahan dan pemusnahan kearsipan perlu dilakukan karena ruang dan tempat menyimpan arsip serta umur arsip juga terbatas. This research is motivated by the idea that the problems found in the field during the implementation of guidelines and development activities archives and documents of the archives in environmental management BAUAK Walisongo IAIN Semarang focus of this research is how the dynamic records management in the General Bureau of Academic and Student Affairs (BAUAK IAIN Walisongo Semarang? The results showed that the process of recording archives in IAIN BAUAK Walisongo Semarang using the principle of centralization and decentralization. Process control is still in the stage of maintenance records archives. Archival storage process using the alphabetic system and subject the system. Archival preservation process using shelves and filing cabinets from the best materials, in other words, the implementation of records management in BAUAK IAIN Walisongo Semarang has not been too good in accordance with the standards of

Öğrenci tükenmişliğini yordamada stresle başaçıkma, sınav kaygısı, akademik yetkinlik ve anne-baba tutumları / Coping with stress, test anxiety, academic self-efficacy and parental attitudes in predicting student burnout

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Uğur ÇAPULCUOĞLU

2013-04-01

Full Text Available ÖZETBu araştırma, Maslach Tükenmişlik modeli çerçevesinde, stresle başaçıkma, sınav kaygısı, akademik yetkinlik ve anne-baba tutumları değişkenlerinin lise öğrencilerinin tükenmişlik düzeylerini yordamadaki katkılarını incelemek amacıyla gerçekleştirilmiştir. 1385 lise öğrencisinin katıldığı araştırmada, Maslach Tükenmişlik Envanteri-Öğrenci Formu (MTE-ÖF, “Stresle Başa Çıkma Tarzları Ölçeği”, “Sınav Kaygısı Envanteri”, “Ergenlerde Yetkinlik Beklentisi Ölçeği” ve “Ana Baba Tutum Envanteri” kullanılmıştır. Öğrencilerin tükenmişlik düzeylerinin stresle başaçıkma, sınav kaygısı, akademik yetkinlik ve anne-baba tutumlarının yordayıp yordamadığını belirlemek amacıyla, çoklu regresyon analizi yapılmıştır. Bulgular; akademik yetkinliğin tükenmenin % 14’ünü, duyarsızlaşmanın % 10’unu ve yetkinliğin ise % 20’sini açıkladığını göstermiştir. Bu değişkenin yanı sıra, tükenme alt boyutunda olumlu stresle başaçıkma ve sınav kaygısının; duyarsızlaşma alt boyutunda olumsuz stresle başaçıkma ve sınav kaygısının; yetkinlik alt boyutunda ise sosyal destek arama yaklaşımı ve demokratik ana-baba tutumlarının önemli yordayıcılar olduğu belirlenmiştir.

Muusikamaailm : "MaerzMusik" Berliinis. Rostropovitshi juubel algas. Wolfganf Rihm 50 / Priit Kuusk

Index Scriptorium Estoniae

Kuusk, Priit, 1938-

2002-01-01

Endine Saksa DV "Musik-Biennale Berlin" hakkab kandma uut nime "MaerzMusik. Festival für aktuelle Musik". 75aastaseks saav Mstislav Rostropovitsh tähistab oma juubelit mitmete kontsertidega. Lühidalt saksa helilooja Wolfgang Rihmist, kes sai hiljuti 50-aastaseks

Bagatellid : maailm / Mailis Põld

Index Scriptorium Estoniae

Põld, Mailis

2006-01-01

Muusikasõnumeid mujalt maailmast: Matusemuusikust ooperidiiva Erika Sunnegardh. Lionel Bringuier - noor talent dirigentide seas. Riccardo Muti naudib vabakutselise staatust. Mstislav Rostropovitsh lõpetab sooloesinemised. Lahkumisest on teatanud maestro Wolfgang Sawallisch. Arturo Benedetti Michelangeli preemia läheb sel aastal rumeenlasele pianist Radu Lupule.

5E Öğrenme Modeline Dayalı Etkinliklerin Öğrencilerin Bilimsel Süreç Becerileri ve Akademik Başarılarına Etkisi

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Nurhan ÖZTÜRK GEREN

2014-12-01

Full Text Available Bu çalışmanın amacı, 6.sınıf ışık ve ses ünitesinde 5E öğrenme modeline dayalı etkinliklerin öğrencilerin bilimsel süreç becerileri ve akademik başarıları üzerindeki etkisini belirlemek ve bu etkinliklerin derste kullanımına yönelik öğrenci görüşlerini tespit etmektir. Bu amaca hizmet etmesi açısından 5E öğrenme modeline dayalı olarak rehber etkinlik seti geliştirilmiş ve setin süreçte etkililiği değerlendirilmiştir. 2011-2012 eğitim-öğretim yılında Sinop ili merkez ilçesinde bir ilköğretim okulunda altıncı sınıfa devam eden 25 deney ve 17 kontrol grubu öğrencisi ile gerçekleştirilen bu araştırmada karma yöntemler araştırma yöntemi kullanılmıştır. Araştırmanın nicel bölümünde, ön test son test kontrol gruplu deneysel desen kullanılmıştır. Araştırmanın deney grubu öğrencileri ile gerçekleştirilen nitel bölümünde ise durum çalışması (casestudy yöntemi kullanılmıştır. Araştırma süresince elde edilen nicel verilerin analizleri SPSS 15.0 istatistik paket programı ile nitel verilerin analizi ise içerik analizi ve sürekli karşılaştırılmalı veri analizi yöntemleri birlikte kullanılarak NVivo 8.0 Nitel Veri Analizi Programı ile gerçekleştirilmiştir. Araştırmada 5E öğrenme modeline uygun hazırlanan rehber etkinlikleri ile desteklenen dersin öğrencilerin bilimsel süreç becerileri ve akademik başarıları üzerinde anlamlı ve olumlu etkisi olmuştur.

STUDI DESKRIPTIF KEPUASAN MAHASISWA TERHADAP KINERJA LEMBAGA PROGRAM STUDI DAN PASCA SARJANA UNNES

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Joko Widodo

2012-09-01

Full Text Available Penelitian ini mendeskripsikan kepuasan mahasiswa pada layanan akademik program studi (Prodi dan program pascasarjana (PPs , Mendeskripsikan kinerja akademik program studi dan program pascasarjana, Mendeskripsikan faktor-faktor yang mendukung kinerja akademik prodi dan PPs. Populasi penelitian ini adalah mahasiswa PPs aktif S2 semester 2 berjumlah 621 orang. Sedangkan sampel penelitian diambil secara simple random sampling berjumlah 102 orang. Hasil penelitian menunjukkan Kepuasan mahasiswa terhadap layanan akademik baik pada lingkup Prodi maupun lingkup PPs tergolong dalam kategori baik, Deskripsi hasil kinerja akademik Prodi, secara umum termasuk kategori baik, Berdasarkan hasil deskripsi enam indikator kinerja akademik PPs, secara umum rata-rata berada pada kategori baik.  Kinerja akademik PPs ditentukan oleh indikator sarana prasarana pendidikan (tangibles, kehandalan dosen dan staf (reliability, sikap tanggap dosen dan staf akademik (responsibility, perlakuan dosen dan staf pada mahasiswa (assurance, pemahaman terhadap kepentingan mahasiswa (emphaty, dan kepuasan mahasiswa (satisfaction. Saran yang diberikan hendaknya Program pascasarjana perlu mendorong peningkatan jumlah dosen dengan kualifikasi doktor (S3 sehingga layanan akademik perkuliahan dapat meningkat dan berdampak pula pada kinerja akademik secara keseluruhan.This study aimed to describe student satisfaction in the service of academic of study program  and graduate programs , describing the academic performance of study program and graduate program,  describes the factors that support academic performance of study program and graduate program. The population are active graduate students who are in second semester, the  total number is  621 people. While the study sample is taken by simple random sampling, total sample is 102 people. Results show that student satisfaction for academic services in both  study programs and graduate programs are  in  good

Depth, chemical, and temperature from bottle casts in the Sea of Okhotsk from 29 June 1990 to 31 August 1997 (NODC Accession 0000385)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — Depth, chemical, and temperature data were collected from the SAMOED, AKADEMIK ALEKSANDR NESMEYANOV, AKADEMIK M.A. LAVRENTYEV, and PROFESSOR LEVANIDOV from June 29,...

Water-cooled spacecraft : DART to be launched by Russian Volna (Stingray) rocket

NARCIS (Netherlands)

Van Baten, T.; Buursink, J.; Hartmann, L.

2002-01-01

A25 September 2005, Barents Sea, near Murmansk.Ten metres under the surface of the sea, the launch tube of the Mstislav, a Rostropovich class nuclear submarine, grinds open. The countdown for the launch of a Volna R-29R slbm (Submarine-Launched Ballistic Missile) starts: For many years, satellites

Salinity and physical data from TS probe and thermometer in the Southeast Pacific Ocean from 04 December 1956 to 01 May 1989 (NODC Accession 0000329)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — Salinity, temperature, and physical data were collected from the AKADEMIK FEDOROV (AKA AKADEMIK FYODOROV), LENA, and OB from December 4, 1956 to May 1, 1989. These...

TERAPAN KOMBINASI METODE TOPSIS DAN ANALYTICAL HIERARCHY PROCESS PADA PEREKOMENDASIAN PENERIMA BEASISWA PENINGKATAN PRESTASI AKADEMIK (Studi Kasus pada STMIK PPKIA Tarakanita Rahmawati

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Muhammad Fadlan

2017-11-01

Full Text Available Beasiswa Peningkatan Prestasi Akademik (PPA sebagai salah satu bentuk dukungan pemerintah Republik Indonesia terhadap dunia pendidikan. Beasiswa yang disalurkan oleh pemerintah melalui Perguruan Tinggi yang ada di Indonesia ini, penyeleksian dan penetapan penerimanya sepenuhnya diserahkan kepada pihak Perguruan Tinggi yang bersangkutan. Tahap inilah yang sangat rentan terjadinya kecurangan. Pada objek penelitian  yang diteliti hingga saat ini proses penyeleksian masih dilakukan dengan menggunakan Microsoft Excel, hal ini tentu saja kurang efektif dan efisien, serta rentan akan terjadinya kesalahan bahkan kecurangan. Untuk itu, diperlukan suatu metodologi dan aplikasi yang tepat dalam melakukan penyeleksian penerima beasiswa tersebut. Decision Support System digunakan sebagai solusi untuk melakukan perekomendasian penerima beasiswa, khususnya dengan menggunakan Metode Technique  for  Order  Preference  by  Similarity  to  Ideal  Solution  (TOPSIS  dan  Analytical  Hierarcy Process (AHP. Penggunaan kombinasi dua metode tersebut dilakukan agar memiliki tingkat akurasi yang baik jika dibandingkan  dengan menggunakan satu metode. Hasilnya,  aplikasi  decision support system dengan penerapan kombinasi metode Topsis dan AHP berhasil di rancang dan di ujicoba, serta sukses dalam perekomendasian penerima beasiswa PPA dengan menghasilkan data alternatif mahasiswa yang terurut mulai dari nilai preferensi yang paling tinggi 0.764 hingga terendah 0.189. Hasil ini dapat menjadi rekomendasi bagi pengambil keputusan dalam mengambil keputusan yang efektik, efisien dan dapat dipertanggung jawabkan.

PENGARUH COMPUTER SELF-EFFICACY, COMPUTER ANXIETY DAN ATTITUDE PADA SYSTEM USE DAN DAMPAKNYA TERHADAP USER SATISFACTION DAN INDIVIDUAL IMPACT (Studi pada Mahasiswa Program Sarjana Angkatan 2011-2013 sebagai Pengguna Sistem Informasi Akademik Mahasiswa (SIAM di Universitas Brawijaya

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Wempi Naviera

2017-06-01

ABSTRAK  Penelitian ini bertujuan untuk mengetahui sejauh mana kepuasan mahasiswa terhadap implementasi sistem informasi yang ada di Universitas Brawijaya, khususnya Sistem Informasi Akademik Mahasiswa (SIAM sekaligus untuk mengetahui dampak individu yang diakibatkan oleh adanya sistem informasi tersebut. Model yang diajukan pada penelitian ini merupakan gabungan beberapa konstruk yang disusun menjadi satu model dan diuji menggunakan beberapa teori dari peneliti terdahulu. Variabel dalam penelitian ini adalah Computer Self-Efficacy, Computer Anxiety, Attitude Pada System Use, User Satisfaction, Individual Impact. Penelitian ini dilakukan di beberapa fakultas di Universitas Brawijaya. Sampel pada penelitian ini adalah mahasiswa angkatan 2011 – 2013, sejumlah 345 orang mahasiswa. Software PASW Statistics (SPSS versi 16 dan Partial Least Square (PLS version 3.2.1 digunakan untuk menguji model dan hipotesis yang diajukan. Kata Kunci: Computer Self-Efficacy, Computer Anxiety, Attitude Pada System Use, User Satisfaction, Individual Impact.

Sosyal Bilgiler Dersinde Kolb'un Deneyimsel Öğrenme Kuramına Dayalı Eğitimin Tutum, Akademik Başarı ve Öğrenmenin Kalıcılığına Etkisi

OpenAIRE

Gencel, İlke Evin

2008-01-01

Bu çalışmanın amacı, Kolb'un deneyimsel öğrenme kuramına dayalı eğitimin ilköğretim yedinci sınıf öğrencilerin sosyal bilgileri dersine yönelik eğitimler, bu dersteki akademik başarıları ve öğrenilenlerin kalıcılığı üzerindeki etkisini ölçmek. Çalışma grubunu İzmir ili Konak ilçesinde bulunan 19 Mayıs İlköğretim Okulu yedinci sınıf öğrencileri oluşturulmuştur (n = 50). Deney grubunda, deneyimsel öğrenme kuramına uygun olarak, sırasıyla somut deneyim, yansıtıcı gözlem, soyut kavramsallaşt...

Investigation of Maths Oriented Academic Risk-Taking Behaviours of Secondary School Students by Some Variables [Ortaokul Öğrencilerinin Matematik Odaklı Akademik Risk Alma Davranışlarının Bazı Değişkenlere Göre İncelenmesi

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Esat Avcı

2016-08-01

Full Text Available In this study, secondary school students' academic risk-taking behaviours have been investigated to understand whether they vary according to some variables or not. These variables are: Gender, grade level, town, type of school, parents education level, economic status of the family, the previous year's maths scores. Survey method was used in the study. The population is students who are studying in secondary schools located in Akdeniz, Mezitli, Toroslar and Yenişehir provinces of Mersin, in the 2014 - 2015 academic year. The research sample is 1054 students who are studying at 14 of these schools. “Mathematics-oriented academic risk taking behaviors scale” was used for data collection. Data for the analysis of independent samples t-test and ANOVA were used. There is no significant variance between maths-oriented academic risk-taking behaviours of students based on variables such as gender, town, school type and economic status of the family whereas there is meaningful variance based on variables such as grade level, level of parents education and last year's mathematics score. [Bu araştırmada ortaokul öğrencilerinin akademik risk alma davranışlarının bazı değişkenlere göre farklılık gösterip göstermediği araştırılmıştır. Bu değişkenler şunlardır: Cinsiyet, sınıf düzeyi, ilçe, okul türü, anne ve baba eğitim düzeyi, ailelerin ekonomik durumu, bir önceki seneki matematik puanları. Çalışmada tarama yöntemi kullanılmıştır. Araştırma evreni, 2014 – 2015 eğitim öğretim yılında Mersin ili Akdeniz, Mezitli, Toroslar ve Yenişehir ilçelerinde bulunan ortaokullarda okumakta olan öğrencilerdir. Araştırma örneklemi ise bu okullardan 14 tanesinde okumakta olan 1054 öğrencidir. Veri toplama aracı olarak “Matematik Odaklı Akademik Risk Alma Ölçeği” kullanılmıştır. Verilerin analizi için bağımsız örneklem t testi ve ANOVA uygulanmıştır. Öğrencilerin matematik odakl

Öğretmenlerin Akademik Erteleme Davranışı İle Teknoloji Kullanım Özellikleri Arasındaki İlişki The Relationship Between Academic Procrastination And Technology Usage Of Teachers

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Gonca KIZILKAYA CUMAOĞLU

2012-12-01

Full Text Available There are a lot of factors that affect the professional developmentof teachers. The academic procrastination and technology is the subjectof this research. The purpose of this research is identifying thetechnology usage and academic procrastination levels and investigatingthe relationship of technology usage and academic procrastination. Thisdescriptive study is conducted with teachers (115 of two schools inIstanbul by survey method. Data are collected with two tools for thestudy. One is procrastination scale which is developed by Aitken (1982and adapted to Turkish by Balkıs (2006 and the other is technologyquestionnaire (12 questions. SPSS 16.0 programmer was used inanalyzing the data. Pearson correlational analysis was used toidentifying the relationship of variables and t test, ANOVA was used inidentifying the significant difference between the variables. Determiningthe answers of teachers on questionnaire items mean and standarddeviation are used. The academic procrastination levels of teachers wasfound in middle level ( X =52,63 and there is no significant differencewas found between gender, branch, course load and academicprocrastination while their procrastination level was differentiaterespect to following agenda (p Öğretmenlerin mesleki gelişimlerini etkileyen pek çok etmenbulunmaktadır. Bu etmenlerden teknoloji kullanımı ve akademikerteleme davranışı bu araştırmanın konusudur. Bu araştırmanın amacıöğretmenlerin akademik erteleme ve teknoloji kullanım düzeylerininbelirlenmesi ve akademik erteleme davranışı ile teknoloji kullanımıarasındaki ilişkinin incelenmesidir. Betimsel çalışma olan bu araştırma,tarama (survey modeli ile İstanbul ilinde bulunan iki okulda çalışan115 kişilik bir öğretmen grubu üzerinde yürütülmüştür. Araştırmanınverileri Aitken (1982 tarafından geliştirilen, Balkıs (2006 tarafındanTürkçe’ye uyarlaması yapılan Erteleme Eğilimi Ölçeği (α = .89 ve 12

Hubungan Antara Self-Efficacy Akademik dan Konsep Diri Akademik dengan Prestasi Akademik

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Lisa Ratriana Chairiyati

2013-10-01

Full Text Available This study discusses the relationship between academic self-efficacy and academic self-concept with academic achievement. The design of the study was descriptive - correlational, with a study sample of 192 children. Statistical Analysis with SPSS computer method (Statistical Package for Social Science version 17.0 for windows is used to find out characteristics of the respondents, and the regression analysis between the two independent variables (self-efficacy and academic self-concept academic and the dependent variable (academic achievement produce models regression . The results showed only variable Self-Efficacy (SE contributes positively to academic achievement. It is supported by the value of t-statistic greater than 1, 645 for the value . Hence it can be said that the dependent variable (academic achievement can be predicted with self-efficacy academic. 

Sanal Gerçeklik Programlarının Astronomi Konularının Öğretiminde Kullanılmasının Akademik Başarı ve Kalıcılığa Etkisi

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Hilal Aktamış

2012-11-01

Full Text Available Bu araştırmada üç boyutlu görsel tasarımları içeren sanal gerçeklik programlarının, ilköğretim 7. sınıf öğrencilerinin fen ve teknoloji dersi astronomi konusundaki başarılarına ve kalıcılıklarına etkisini araştırmak amaçlanmıştır. Bu kapsamda ilköğretim 7. sınıf öğrencilerinin zihinlerinde astronomi konularını daha iyi yapılandırabilmesi için sanal gerçeklik programlarına uygun etkinlik yaprakları geliştirilmiş ve Aydın ilinde sosyoekonomik bakımdan alt düzeydeki bir İlköğretim okulunda yer alan yedinci sınıf öğrencilerine uygulanmıştır. Araştırmanın çalışma grubunu deney grubunda 30, kontrol grubunda 30 öğrenci olmak üzere toplam 60 öğrenci oluşturmaktadır. Araştırmada kullanılan 20 maddelik Astronomi Başarı Testi'nin cronbach alfa güvenirlik katsayısı .76 olarak hesaplanmış ve çalışma grubundaki öğrencilere uygulama öncesi ön test, uygulama sonrası son test ve uygulamadan üç ay sonra kalıcılık testi olarak uygulanmıştır. Uygulama sonucuna göre sanal gerçeklik programları kullanılarak yapılan öğretim sonucunda deney grubunun akademik başarısının kontrol grubuna göre daha fazla arttığı görülmüştür. Sanal gerçeklik programları kullanılarak yapılan öğretimin öğrencilerin akademik başarılarını arttırmada daha etkili olduğu ortaya çıkmıştır.

KEMAMPUAN BERPIKIR KREATIF SISWA SD DALAM PEMBELAJARAN IPA

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Jamaluddin Jamaluddin

2016-02-01

Full Text Available Abstract: Elementary School Studens' Creative Thinking Skills in Science Learning. This study aims (1 to investigate the differences of creative thinking skills among elementary school students who applied various learning methods (questioning, Think-Pair-Share, and Numbered-Head together and those who applied conventional learning methods; (2 to find out the differences in creative thinking skills between students of high and low academic ability; (3 to investigate the differences of creative thinking skills as influ­enced by learning methods and academic ability. Using a quasi -experimental design, this study found out that there are differences in creative thinking skills among students applying different learning methods and among students of different academic abilities and that these differences in creative thinking are skills as influenced by learning methods and academic abilities. Abstrak: Kemampuan Berpikir Kreatif Siswa SD dalam Pembelajaran IPA. Artikel ini didasarkan pada laporan penelitian yang bertujuan untuk mengetahui (1 perbedaan keterampilan berpikir kreatif, antara siswa yang belajar dengan strategi pembelajaran PBMP, PBMPTPS, PBMPNHT, dan strategi pembelajaran konvensional; (2 perbedaan keterampilan berpikir kreatif siswa berkemampuan akademik tinggi dan rendah; (3 perbedaan keterampilan berpikir kreatif akibat dari interaksi antara strategi pembelajaran dengan kemampuan akademik siswa. Hasil penelitian menunjukkan (1 ada perbedaan keterampilan berpikir kreatif antara siswa yang belajar dengan strategi PBMP, PBMPTPS, PBMPNHT, dan strategi Konven­sional; (2 ada perbedaan keterampilan berpikir kreatif, antara siswa berkemampuan akademik tinggi dengan siswa berkemampuan akademik rendah; (3 interaksi strategi pembelajaran PBMP, PBMP.TPS, PBMP.NHT, dan konvensional dengan kemampuan akademik siswa tidak berpengaruh signifikan terhadap keterampilan berpikir kreatif.

ÖĞRETMEN ADAYLARININ AKADEMİK ERTELEME DAVRANIŞI İLE ÖĞRETMENLİK MESLEĞİNE İLİŞKİN TUTUMLARININ KARŞILAŞTIRMALI

OpenAIRE

KUTLU, Neşe; GÖKDERE, Murat; ÇAKIR, Recep

2016-01-01

Bu araştırmanın amacı, öğretmen adaylarının akademik erteleme düzeyleri ile öğretmenlik mesleğine yönelik tutumlarını belirlemek, akademik erteleme eğilimi ile öğretmenlik mesleğine yönelik tutumlar arasında anlamlı bir ilişki olup olmadığını incelemektir. Araştırmanın örneklemini Amasya Üniversitesi Eğitim Fakültesi'nde öğrenim görmekte olan 722 öğretmen adayı oluşturmaktadır. Veri toplama aracı olarak Aitken (1982) tarafından geliştirilen Balkıs (2006) tarafından uyarlanan “Akademik Er...

Perbandingan Kinerja Metode Ward Dan K-means Dalam Menentukan Cluster Data Mahasiswa Pemohon Beasiswa (Studi Kasus : STMIK Pringsewu)

OpenAIRE

Satria, Fiqih; Aziz, R Z Abdul

2016-01-01

This research aims to determine the steps cluster analysis method with Ward method and K-Means method, and compare the results of the analysis of the two methods for clustering student data related decision-making to determine the students are eligible to receive a Peningkatan PrestasiAkademik (PPA) scholarship and Bantuan Biaya Akademik (BBA) scholarship in STMIK Pringsewu. Cluster analysis was performed using IBM SPSS Version 23. Cluster Analysis results of both methods were compared using ...

YÜKSEK-DÜŞÜK BAĞLAMLI İLETİŞİM İLE ÖRGÜTSEL MUHALEFET DAVRANIŞLARI ARASINDAKİ İLİŞKİ: AKADEMİSYENLER ÜZERİNE BİR ARAŞTIRMA -THE RELATIONSHIP BETWEEN HIGH-LOW CONTEXT COMMUNICATION AND ORGANIZATIONAL DISSENT BEHAVIORS: A RESEARCH ON SÜLEYMAN DEMİREL UNIVERSITY ACADEMIC STAFF

OpenAIRE

İZGÜDEN, Dilruba; ERDEM, Ramazan

2017-01-01

Buçalışmada, üniversitede çalışmakta olan akademik personelin örgütsel muhalefetdavranışlarının ve yüksek-düşük bağlamlı iletişim eğilimlerinin ölçülmesi ve aralarındakiilişkinin tespit edilmesi amaçlanmaktadır. Araştırmanın evrenini SüleymanDemirel Üniversitesi’ne bağlı fakültelerde çalışan akademik personel oluşturmaktadır.Araştırma kapsamında 201 akademik personele anket uygulanmıştır. Veri toplamaaracı olarak Erdem (2006) tarafından Hall’ın Yüksek Bağlam-Düşük Bağlam Modeliçerçevesinde ge...

Hubungan Antara Motivasi Akademik Dengan Prokrastinasi Akademik Pada Mahasiswa

OpenAIRE

Reza, Iredho Fani

2015-01-01

This research was intended to find out the correlation between academik motivation and academic procastination on post garduate students. The population of the study was taken from magister students of a postgraduate school in Jakarta during the period of 2010-2014. The sampling technique used purposive sampling and involved 30 post graduate students as samples. Data were collected through Academic Motivation Scale and Academic Procastinantion Scale and were analized using product moment corr...

Experimental comparison of models for ultrafast impact ionization is silicon

DEFF Research Database (Denmark)

Tarekegne, Abebe Tilahun; Iwaszczuk, Krzysztof; Jepsen, Peter Uhd

2016-01-01

We compare experimentally the exponential and quadratic (Keldysh formula) impact ionization models using THz induced impact ionization in silicon. We demonstrate that the exponential model offers the best description of impact ionization process for ultrashort electric filed pulses.......We compare experimentally the exponential and quadratic (Keldysh formula) impact ionization models using THz induced impact ionization in silicon. We demonstrate that the exponential model offers the best description of impact ionization process for ultrashort electric filed pulses....

Equilibrium and nonequilibrium many-body perturbation theory: a unified framework based on the Martin-Schwinger hierarchy

International Nuclear Information System (INIS)

Van Leeuwen, Robert; Stefanucci, Gianluca

2013-01-01

We present a unified framework for equilibrium and nonequilibrium many-body perturbation theory. The most general nonequilibrium many-body theory valid for general initial states is based on a time-contour originally introduced by Konstantinov and Perel'. The various other well-known formalisms of Keldysh, Matsubara and the zero-temperature formalism are then derived as special cases that arise under different assumptions. We further present a single simple proof of Wick's theorem that is at the same time valid in all these flavors of many-body theory. It arises simply as a solution of the equations of the Martin-Schwinger hierarchy for the noninteracting many-particle Green's function with appropriate boundary conditions. We further discuss a generalized Wick theorem for general initial states on the Keldysh contour and derive how the formalisms based on the Keldysh and Konstantinov-Perel'-contours are related for the case of general initial states.

Prokrastinasi Akademik Menghambat Peningkatan Prestasi Akademik Remaja di Wilayah Perdesaan

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Yuana Zahra

2015-09-01

Full Text Available Academic achievement is one of the indicators to determine the success of educational goals. This research was to analyze the influence of adolescent characteristics, family characteristics, peer group behavior, selfefficacy,and academic procrastination on academic achievement of adolescent. This study was conducted in Bogor regency, West Java Province. The number of samples in this study were 150 high school students that were chosen by proportional random sampling. Self-efficacy was measured by Indonesian Adaption of General Self Efficacy Scale’s instrument. Academic procrastination was measured by using Tuckman Procrastination Scale. Data was collected by self report and was analyzed by descriptive analysis, correlation test, and multiple linear regression test. The result showed that the role of peer correlated significantly with self efficacy and self efficacy corellated significantly with academic procrastination. The academic achievement of adolescent wasinfluenced positively by sex and peers behavior (role and action of peers and negatively was influenced by academic procrastination.

HUBUNGAN SELF EFFICACY DAN PRESTASI BELAJAR SISWA PADA MATA PELAJARAN ILMU PENGETAHUAN ALAM TERPADU

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Try Susanti

2016-10-01

Full Text Available Abstrak   Tujuan penelitian ini adalah untuk meneliti hubungan antara kepercayaan diri (self-efficacy dan prestasi akademik siswa pada sekolah menengah. Sampel penelitian ini berjumlah 37 orang siswa sekolah tahun akademik 2014/2015 yang dipilih dengan teknik total sampling. Pengukuran kepercayaan diri (self – efficacy menggunakan skala The Teacher Efficacy Scale, sedangkan pengukuran prestasi siswa menggunakan nilai rata-rata rapor siswa. Analisis data menggunakan korelasi product moment.  Hasil penelitian menunjukkan kepercayaan diri (self-efficacy diri siswa memiliki hubungan dengan prestasi akademik siswa pada mata pelajaran ilmu pengetahuan alam terpadu (Biologi.  Semakin tinggi kepercayaan diri (self efficacy siswa, semakin tinggi prestasi mereka, sebaliknya semakin rendah kepercayaan diri (self-efficacy siswa maka semakin rendah prestasi akademik mereka pada mata pelajaran ilmu pengetahuan alam (Biologi.   Kata kunci: Self Efficacy, Prestasi, Siswa                 Abstract   [Relationship between self-efficacy and academic achievement in science subjects  (Biology].The aim of the study was to  investigate the relation between self-efficacy  and academic achievement in high school students. In this study, 37 students in the academic year 2014/2015 were selected by means of total sampling. To measure self efficacy, The Teacher Efficacy Scale  was used. To measure achievement score grade point average (school report in classes was used.  To analyze data product moment correlation analysis was used.  Analysis of data revealed that self –efficacy are correlated with academic achievement in Biology. The higher the students' self efficacy, the higher the student achievement in science subject (Biology. Conversely, the lower the students' self-efficacy, the lower the learning achievements of students in science subjects (Biology.  Keywords: Sel -f Efficacy, Achievement, Student

Desain dan Implementasi Sistem Pembelajaran Jarak Jauh Di Program Studi Sistem Komputer

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Muhammad Rozi Yerusalem

2015-10-01

Full Text Available Teknologi informasi saat ini digunakan pada berbagai bidang seperti pembelajaran. Pembelajaran yang dilakukan biasanya disebut dengan e-learning atau pembelajaran jarak jauh. Pembelajaran ini dilakukan dengan menggunakan media yang memungkinkan peserta didik/mahasiswa dan pengajar/dosen dapat melakukan aktivitas pembelajaran tanpa harus bertatap muka. Universitas Diponegoro memiliki sistem otentikasi terpusat berbasis Lightweight Directory Access Protocol. Sistem otentikasi ini menggunakan username dan password yang terdapat dalam server LDAP. Universitas Diponegoro memiliki sistem informasi akademik yang beralamat di http://sia.undip.ac.id. Sistem informasi akademik ini digunakan mahasiswa untuk pengisian kartu rencana studi setiap semester. Berdasarkan latar belakang tersebut dibangun sebuah sistem pembelajaran jarak jauh yang menggunakan otentikasi login single sign on berbasis LDAP dan terintegrasi dengan sistem informasi akademik. Metodologi penelitian yang digunakan meliputi studi literatur dan bimbingan, pengambilan data dan analisis, menggunakan metode pengembangan prototyping. Sistem dibuat menggunakan LMS Moodle, ownCloud, dan CAS Server serta LDAP Server Universitas Diponegoro. Penelitian ini telah dihasilkan sebuah purwarupa sistem pembelajaran jarak jauh berbasis LMS Moodle dan ownCloud yang memiliki otentikasi Single Sign On berbasis CAS Server dan LDAP Server. Moodle telah dikembangkan sehingga dapat melakukan enroll mahasiswa kedalam course sesuai dengan mata kuliah pada kartu rencana studi.

Spatial patterns of water quality parameters in upper layer of the Kara Sea in summer 2016 based on laser remote sensing

Science.gov (United States)

Osokina, Varvara; Pelevin, Vadim; Shatravin, Alexander; Belyaev, Nikolay; Demidov, Andrey; Redzhepova, Zuleyha

2017-04-01

The paper represents results of remote sensing by means of Laser Induced Fluorescence LiDAR during the expedition in Kara Sea in summer 2016. The expedition took place in Western and Southern parts of Kara Sea including Ob and Yenisei areas from June, 14 to August, 20 2016. The LiDAR observations were obtained from the research vessel Mstislav Keldysh and included 4600 km of almost continuous measurements and 94 complex stations. As a result now there is a vast LiDAR database available for scientific purposes. The data were processed and recalculated providing a set of high resolution maps of distribution of main oceanographic water quality parameters including chlorophyll "a", total organic carbon and total suspended matter in surface layer. The proceeded maps give a precise information about the location of frontal zones between Ob and Yenisei waters and Kara Sea waters, provide a detailed picture of complex surface water structure in central Kara Sea and other locations and present data about spatial distinction of concentrations of measured water parameters. The LiDAR measurements were afterwards compared to data, obtained by underway flow-through CTD measuring system and satellite images providing adjunct information on water parameters' distribution features. The instruments of UFL (Ultraviolet fluorescent LiDAR) series were developed by the Shirshov Institute of Oceanology, Moscow, Russia, and have been successfully used in lots of scientific expeditions in different water areas. UFL LiDARs take measurements with sampling rate up to 2 Hz from the vessel under way in any weather or sunlight conditions. The measurements are linked to a GPS, and so all data are geo-tagged and can be used to create interpolated maps of the measured parameters. The instrument analyses backward signal from dual excitation (355, 532 nm) laser pulses emitted at 2 Hz. The signal is detected across 11 bands in series (355, 385, 404, 424, 440, 460, 499, 532, 620, 651, 685 nm) on

Gender as a predictor for academic achievement

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Endang Lestari

2012-07-01

Full Text Available Latar belakang: Profesionalisme adalah hal penting yang harus diperhatikan oleh profesi dokter agar dapat menjaga kepercayaan masayarakat pada profesi ini. Mengembangkan atribut profesionalisme selama masa studi merupakan langkah yang dapat dilakukan oleh institusi pendidikan untuk mengembangkan profesionalisme siswa. Meskipun demikian, professionalism mungkin tidak hanya berpengaruh pada kinerjanya sebagai dokter kelak, namun juga akan berpengaruh pada kinerja ketika masih menjadi mahasiswa. Oleh karena itu, penelitian ini ditujukan untuk mengetahui hubungan antara faktor demografi dan atribut profesionalisme dengan keberhasilan akademik siswa. Metode: Subjek penelitian potong lintang ini terdiri dari mahasiswa tahun ke 4 Fakultas Kedokteran Universitas Islam Sultan Agung (FK Unissula Semarang semester Tahun ke empat. Data mengenai atribut profesionalisme dinilai dengan menggunakan inventory “Penilaian profesionalisme mahasiswa kedokteran”, yang disusun dengan menggunakan metode Delphi oleh beberapa ahli dari berbagai bidang. Data mengenai keberhasilan akademik siswa yang diketahui dari indeks prestasi akademik (IPK dikumpulkan dari Unit IT FK Unissula. Data dianalisis memakai regresi Cox dengan waktu yang konstan menggunakan STATA versi 9. Hasil: Sebanyak 86.25% (207 dari 240 mahasiswa berpartisipasi dalam penelitian ini. Hasil akhir analisis menunjukkan bahwa tidak terdapat satupun atribut profesionalisme yang merupakan prediktor keberhasilan akademik yang dicerminkan IPK. Meskipun demikian, gender merupakan faktor yang dapat memprediksi keberhasilan akademik mahasiswa FK Unissula. Mahasiswa perempuan dibandingkan mahasiswa laki-laki 35% lebih tinggi mendapat nilai IPK [risiko relatif suaian (RRa = 1, 35; 95 interval kepercayaan (CI = 1, 05-1, 74. Kesimpulan: Mahasiswa perempuan dibandingkan laki-laki lebih berhasil untuk mendapatkan nilai indeks prestasi kumulatif. (Health Science Indones 2010; 1: 43 - 50 Kata kunci: gender, atribut

Nutrients, salinity, chemical, and temperature data were collected using bottle and CTD casts in the Norwegian Sea from 19 September 1959 to 23 October 1995 (NODC Accession 0000299)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — Nutrients, salinity, chemical, and temperature data were collected from the PROFESSOR MULTANOVSKYI, AKADEMIK SHULEYKIN, IVAN PETROV, and OTTO SCHMIDT from September...

HAK AKADEMISI PELAKU PLAGIARISME DIPANDANG DARI SUDUT PANDANG ETIKA LIBERAL

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Dian Arya

2014-05-01

Abstrak Plagiarisme adalah sebuah dosa besar dalam dunia akademik. Walaupun demikian, hal ini masih seringkali terjadi, yang bahkan dilakukan oleh para pelaku akademik itu sendiri. Direktorat Jeneral Pendidikan Tinggimenyatakan bahwa terdapat 21 perguruan tinggi negeri dan 7  perguruan tinggi swasta yang didaulat sebagai pelaku plagiarism. Pelaku plagiarisme dalam hal ini jelas besar pasak daripada tiang.Demosi sampai dengan moratorium pengangkatan profesor untuk institusi pelaku plagiarism jelas merupakan sesuatu yang sangat merugikan. Artikel ini mencoba untuk meninjau, bagaimana para pelaku plagiarism dari sudut pandang etika liberalism, yang sangat mennyanjung tinggi kebebasan individual. Dari hasil kajian, ternyata, dengan mengambil pendapat Nozick sebagai tokoh kebebasan individu sekalipun, perilaku plagiarism tetaplah sebuah tindakan yang melanggar prinsip-prinsip keadilan. Kata Kunci:Plagiarisme, Pendidikan Tinggi, Etika Liberalisme

MOBBİNG, ÖRGÜTSEL SESSİZLİK VE ÖRGÜTSEL SİNİZM İLİŞKİSİ: ÖRNEK BİR UYGULAMA

OpenAIRE

KALAY, Faruk; OĞRAK, Abdullah; BAL, Vedat; NIŞANCI, Zehra Nuray

2014-01-01

Bir kamu üniversitesinde çalışan akademik ve idari personel olmak üzere toplam 240 kişiden alınan verilerle gerçekleştirilen bu çalışmanın amacı, mobbing, örgütsel sessizlik ve örgütsel sinizm arasındaki ilişkiyi belirlemektir. Araştırma sonuçlarına göre; katılımcılar düşük düzeyde mobbing algısı, orta düzeyde örgütsel sinizm ve örgütsel sessizlik tutumu sergilemektedirler. Akademik ve idari personellerin mobbinge maruz kalma düzeyleri ve örgütsel sessizlik tutumları arasında istatistiksel ol...

HUBUNGAN SELF EFFICACY AKADEMIK DENGAN PROKRASTINASI AKADEMIK PADA MAHASISWA YANG SEDANG MENYELESAIKAN SKRIPSI

OpenAIRE

Annisa Rosni Zusya; Sari Zakiah Akmal

2016-01-01

Having graduated not at the right time is a common phenomena among college students and  procrastinantion which is delaying the final assignment become the reason. One of factors that affect  procrastination is self-efficacy. Self-efficacy that is predicting academic achievement is academic self-efficacy. This research uses quantitative methods to examine the relationship between academic self-efficacy and academic procrastination among 210 students who are completing the last assignment. Ins...

HUBUNGAN SELF EFFICACY AKADEMIK DENGAN PROKRASTINASI AKADEMIK PADA MAHASISWA YANG SEDANG MENYELESAIKAN SKRIPSI

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Annisa Rosni Zusya

2016-12-01

Full Text Available Having graduated not at the right time is a common phenomena among college students and  procrastinantion which is delaying the final assignment become the reason. One of factors that affect  procrastination is self-efficacy. Self-efficacy that is predicting academic achievement is academic self-efficacy. This research uses quantitative methods to examine the relationship between academic self-efficacy and academic procrastination among 210 students who are completing the last assignment. Instrument used are academic procrastination scale and academic self-efficacy scale. Result shows that there is no significant correlation between academic self-efficacy and academic procrastination among students who were completing the last assignment (r = -0.059, p = 0.398. Besides, academic procrastination had significant differences by age, gender, year of admission, residence, and activities. In the same time, the academic self-efficacy had differences by age, year in, obstacles and activities. 

Yazma Eğitimi Alanında Yapılan Akademik Çalışmaların Eğilimleri (2010 - 2014 Yılları

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Mehmet TOK

2015-10-01

Full Text Available Yazma becerisinin birçok bilişsel işlemleri içerisinde barındırması, süreç içermesi, öğrencinin psikolojik durumu, motivasyon ve tutumu, öğretmenlerin yazma alanındaki konumu vb. unsurlar yazma alanında birçok sorunun yaşanmasını beraberinde getirmektedir. Bu nedenle, alan yazında yer alan birçok çalışmada, yazma sorunları doğrudan ele alınmış ya da sıkça bu sorunlara değinilmiştir. Yazma alanındaki sorunların çok olması, alanda yapılan çalışmaların önemini bir kat daha arttırmıştır. Bu çalışmada, yazma eğitimi konusunda 2010-2014 yılları arasında yapılan 126 yüksek lisans, 38 doktora tezinin yanı sıra düzenli bir şekilde yayınlanan 16 ulusal ve uluslararası bilimsel dergide yer alan 127 makale taranmıştır. Ele alınan akademik çalışmalar; hedef kitle, ilişkili olduğu alan, kullanılan yöntem ve yazma eğitimindeki eğilimleri bakımından değerlendirilmiştir. Araştırmada meta-analiz yöntemi kullanılmıştır. Yapılan araştırmalarda hedef kitle bakımından en fazla ortaokul öğrencilerinin seçildiği, yazmanın daha çok okuma ve ilk okuma ile ilişkilendirilerek ele alındığı, yöntem olarak nicel araştırmaların (f=152 nitel araştırmalardan (f=114 daha çok tercih edildiği görülmüştür. En çok kullanılan yöntem tarama modeli olurken doktora tezlerinde deneysel çalışmalar ön plana çıkmıştır. Yazma araştırmaları incelendiğinde araştırmacı eğilimlerinin, yazma yöntemleri ve farklı türlerde metin yazmaya yönelik olduğu görülmüştür.

Meteorological results of monsoon-88 Expedition (pre-monsoon period)

Digital Repository Service at National Institute of Oceanography (India)

Sadhuram, Y.; Krishnamurthy, L.; Babu, M.T.

Mean atmospheric circulation, moisture budget and net heat exchange were studied during a pre-monsoon period (18th March to 3rd May, 1988), making use of the data collected on board "Akademik Korolev" in the central equatorial and southern Arabian...

Non-linear absorption in solids

International Nuclear Information System (INIS)

Brandi, H.S.; Jalbert, G.; Malta, O.L.

1983-06-01

Multiphoton transitions in direct-gap crystals are studied considering a 'non-perturbative' approach, similar to Keldysh approximation. A simple two parabolic band model in the effective mass approximation is considered, so that exact solutions associate to the full, crystal plus field, Hamiltonian may be approximated by Volkov wavefunctions. In this manner an S matrix is constructed which incorporates the electromagnetic field to all orders in an approximated way, leading to analytical solutions for the multiphoton transition rates. The use of the saddle point method and its limitations as well as the connection between multiphoton absorption and tunneling is discussed. It is shown that the Keldysh approach is fairly accurate as long as terms arising from the saddle point integration are consistently accounted. (Author) [pt

Non-linear absorption in solids

International Nuclear Information System (INIS)

Brandi, H.S.; Jalbert, G.; Malta, O.L.

1983-01-01

Multiphoton transitions in direct-gap crystals are studied considering a 'non-perturbative' approach, similar to Keldysh approximation. A simple two parabolic band model in the effective mass approximation is considered. So that exact solutions associated to the full, crystal plus field, Hamiltonian may be approximated by Volkov wavefunctions. An S-matrix which incorporates the electromagnetic field to all orders in an approximated way is constructed leading to analytical solutions for the multiphoton transition rates. The use of the saddle-point method and its limitations as well as the connection between multiphoton absorption and tunneling is discussed. It is shown that for near threshold excitations the Keldysh approach is fairly accurate as long as terms arising from the saddle-point integration are consistently accounted. (Author) [pt

PENGEMBANGAN SISTEM DATABASE HASIL SKRIPSI DAN TUGAS AKHIR PADA JURUSAN TEKNIK ELEKTRO UNNES

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Tatyantoro Andrasto

2013-02-01

Full Text Available Belum adanya database hasil skripsi dan tugas akhir pada jurusan Teknik Elektro UNNES yang baik berakibat memungkinkannya terjadi duplikasi atau penyalahgunaan hasil skripsi atau tugas akhir tahun yang lalu digunakan lagi untuk proposal skripsi atau tugas akhir pada tahun sekarang atau yang akan datang. Sehingga hal ini akan memberikan efek negatif pada perkembangan karya ilmiah/akademik di jurusan Teknik Elektro UNNES khususnya dan dunia akademik di Indonesia pada umumnya. Metode yang diterapkan pada pembuatan database ini adalah membuat prototype kemudian dilakukan proses mencoba dan meminta pendapat orang yang mendata dan menyimpan hasil skripsi dan tugas akhir di jurusan Teknik Elektro UNNES. Hasil penelitian ini berupa sistem database berbasis web sehingga dapat dilakukan input data, edit data maupun melihat data skripsi dan tugas akhir yang ada di jurusan Teknik Elektro UNNES dari manapun, tidak harus datang ke UNNES hanya untuk melihat maupun melakukan edit data oleh admin.

Preface

Indian Academy of Sciences (India)

scientists and engineers, astronomers, business people and ... Earth/Moon system and its current environment, but also ... the space environment, together with the products ... Ivashkin, V V, M V Keldysh Institute of Applied Mathematics, Russia.

Audit Keamanan SIMAK Berdasarkan ISO 27002 (Studi Kasus: FE UNUD

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Yulius C. N. Bless

2016-01-01

Full Text Available Keamanan sistem informasi merupakan sebuah bagian vital yang menjadi perhatian khusus bagi setiap orang yang aktif menggunakan teknologi internet sebagai alat komunikasi dan informasi. Institusi pendidikan seperti universitas, yang menggunakan sistem informasi sebagai salah satu cara dalam manajemen informasi terkait administrasi pegawai dan mahasiswa, maupun informasi lainnya guna menunjang proses pengambilan keputusan. Sistem Informasi Manajemen Akademik (SIMAK di Fakultas Ekonomi Universitas Udayana berfungsi untuk manajemen data akademik mahasiswa. Informasi yang diolah dalam SIMAK haruslah memenuhi CIA (Confidentiality, Integrity, dan Availability. Audit dilakukan agar dapat diketahui tingkat kematangan sistem informasi saat ini. Standar dalam proses audit SIMAK menggunakan ISO/IEC 27002:2005 dan COBIT 4.1 untuk proses pemetaan dan penyusunan rekomendasi. Tingkat kematangan SIMAK saat ini adalah 3 atau Well Defined. Secara umum, tingkat kematangan ini dimaksudkan bahwa sudah terdapat prosedur yang standar dan telah didefinisikan secara baik, namun pelaksanaannya masih belum dilakukan secara rutin dan terstruktur.   Kata kunci: audit, COBIT 4.1, ISO/IEC 27002:2005, tingkat kematangan.

PENGEMBANGAN PLATFORM KOMUNIKASI INSTANT UNTUK MENDUKUNG COLABORATIVE LEARNING PADA UNIVERSITAS DIAN NUSWANTORO

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Fahri Firdausillah

2015-10-01

Full Text Available Instant messaging (IM atau chatting merupakan aplikasi internet yang memungkinkan penggunanya saling berkomunikasi melalui pesan teks, audio, maupun video secara langsung. Keunggulan IM yang memungkinkan pengguna berinteraksi secara langsung berpotensi untuk diterapkan dalam pengembangan sebuah metode pembelajaran kolaboratif di Universitas Dian Nuswantoro (UDINUS. Sistem informasi akademik (SiAdin merupakan aplikasi berbasis web yang membantu manajemen administratif dan edukatif pada UDINUS yang memungkinkan mahasiswa, dosen maupun staff yang lain untuk saling bertukar informasi serta kebutuhan akademik. Namun, hingga kini, SiAdin masih belum terintegrasi dengan platform komunikasi instan apapun.Meskipun layanan broadcast pesan telah diterapkan, namun pengguna harus membuat group secara manual, kemudian menambahkan anggota group secara manual terlebih dahulu. Hal ini menjadikan proses komunikasi kolaboratif jadi kurang optimal.Dalam penelitian ini, penulis mengusulkan menerapkan metode Computer-supported collaborative learning (CSCL di UDINUS dengan memanfaatkan SiAdin yang telah berjalan di UDINUS untuk mendukung berjalannya collaborative learning. Kata Kunci: Instant Messaging, SiAdin, Pembelajaran Kolaboratif.

Fermionic Schwinger-Keldysh propagators from AdS/CFT

International Nuclear Information System (INIS)

Giecold, G.C.

2009-01-01

The Herzog and Son prescription for computing real-time Green functions for finite temperature gauge theories from their gravity dual is generalized to fermions. These notes explain how such an extension involves properties of spinors in a curved, complexified space-time.

Pemaafan Dan Prokrastinasi Akademik Mahasiswa

OpenAIRE

Rahmandani, Amalia

2017-01-01

Procrastination has an impact on academic achievement, as well as mental health. Although forgiveness is included as an attribute of positive psychology, the evidence about the relationship between forgiveness and procrastination impress contradiction. This study aims to examine the relationship between forgiveness and academic procrastination in college students. There were 127 undergraduate students from The Department of Nutritional Sciences, Faculty of Medicine, University of Diponegoro, ...

Dynamically assisted Sauter-Schwinger effect in inhomogeneous electric fields

Energy Technology Data Exchange (ETDEWEB)

Schneider, Christian; Schützhold, Ralf [Fakultät für Physik, Universität Duisburg-Essen,Lotharstrasse 1, 47057 Duisburg (Germany)

2016-02-24

Via the world-line instanton method, we study electron-positron pair creation by a strong (but sub-critical) electric field of the profile E/cosh{sup 2} (kx) superimposed by a weaker pulse E{sup ′}/cosh{sup 2} (ωt). If the temporal Keldysh parameter γ{sub ω}=mω/(qE) exceeds a threshold value γ{sub ω}{sup crit} which depends on the spatial Keldysh parameter γ{sub k}=mk/(qE), we find a drastic enhancement of the pair creation probability — reporting on what we believe to be the first analytic non-perturbative result for the interplay between temporal and spatial field dependences E(t,x) in the Sauter-Schwinger effect. Finally, we speculate whether an analogous effect (drastic enhancement of tunneling probability) could occur in other scenarios such as stimulated nuclear decay, for example.

QUANTUM TRANSPORT-THEORY OF NUCLEAR-MATTER

NARCIS (Netherlands)

BOTERMANS, W; MALFLIET, R

1990-01-01

Quantum kinetic equations are derived using the Keldysh Green's function formalism to describe non-equilibrium processes in nuclear matter and nucleus-nucleus collisions. A general transport equation is proposed which includes energy spreading effects. We discuss a number of specific kinetic

Modeling short-pulse laser excitation of dielectric materials

DEFF Research Database (Denmark)

Wædegaard, Kristian Juncher; Sandkamm, Ditte Både; Haahr-Lillevang, Lasse

2014-01-01

A theoretical description of ultrashort-pulse laser excitation of dielectric materials based on strong-field excitation in the Keldysh picture combined with a multiple-rateequation model for the electronic excitation including collisional processes is presented. The model includes light attenuation...

Okuma Motivasyonu, Akıcı Okuma ve Okuduğunu Anlamanın Beşinci Sınıf Öğrencilerinin Akademik Başarılarındaki Rolü The Role Of The Reading Motivation, Reading Fluency And Reading Comprehension On Turkish 5th Graders’ Academic Achievement

Directory of Open Access Journals (Sweden)

Mustafa YILDIZ

2013-07-01

Full Text Available The purpose of this study is to define how and what way thereading motivation, reading fluency and reading comprehension effectthe academic achievement fifth grade. There was a structural modeldeveloped and tested in the framework of the correlational desingn.There were 135 students fifth year primary students studying in aschool located in Etimesgut town of Ankara province. The readingmotivation of the students were determined by the use of Motivationsfor Reading Questionnaire in Turkish Form . The level of the readingfluency was determined by oral reading an appropriate text in theclassroom. The errors made throughout the study were determined tofind the reading rate and accuracy. The prosody which anotherindicator of the reading fluency was determined by the use ofMultidimensional Fluency Scale. The data necessary for thedetermination of the reading comprehension levels of the students wereobtained from the narrative and expository comprehension andvocabulary tests. The academic achievements of the students weredetermined from their mathematics, science and social sciences grades.The Structural Equation Modeling (SEM was employed in order toanswer the research question. The data analyses were carried out bythe SPSS and AMOS statiscal software. The data obtained in the studyshowed that the reading motivation, reading fluency and the readingcomprehension explain %61 of the variance in the academicachievements of the students. This is thought to be a very bigcontribution to the literature. The approaches towards the readingcomprehension in texts book should be thoroughly revised. The numberof the studies for the promotion of the reading motivation, teaching thereading fluency and furnishing the students with readingcomprehension skill should definitely be increased. Bu çalışmanın amacı; okuma motivasyonu, akıcı okuma ve okuduğunu anlamanın akademik başarıyı hangi yolla ve ne düzeyde etkilediğini belirlemektir. İlişkisel tarama

On some problems of descriptive set theory in topological spaces

International Nuclear Information System (INIS)

Choban, M M

2005-01-01

Problems concerning the structure of Borel sets, their classification, and invariance of certain properties of sets under maps of given types arose in the first half of the previous century in the works of A. Lebesgue, R. Baire, N. N. Luzin, P. S. Alexandroff, P. S. Urysohn, P. S. Novikov, L. V. Keldysh, and A. A. Lyapunov and gave rise to many investigations. In this paper some results related to questions of F. Hausdorff, Luzin, Alexandroff, Urysohn, M. Katetov, and A. H. Stone are obtained. In 1934 Hausdorff posed the problem of invariance of the property of being an absolute B-set (that is, a Borel set in some complete separable metric space) under open continuous maps. By a theorem of Keldysh, the answer to this question is negative in general. The present paper gives additional conditions under which the answer to Hausdorff's question is positive. Some general problems of the theory of operations on sets are also treated

Multiphoton absorption probabilities in strong laser fields with application to H-

International Nuclear Information System (INIS)

Mu, X.; University of Oregon, Eugene, OR

1990-01-01

The commonly used Keldysh multiphoton ionization rate is shown to follow from the zeroth-order approximation of an exact expression, based on the formal time-independent theory of scattering. The formulation is applied to the loosely bound H - system; good agreement is obtained with a recent experimental measurement

Quantum Scalar Corrections to the Gravitational Potentials on de Sitter Background

NARCIS (Netherlands)

Park, Sohyun; Prokopec, Tomislav; Woodard, R. P.

We employ the graviton self-energy induced by a massless, minimally coupled (MMC) scalar on de Sitter background to compute the quantum corrections to the gravitational potentials of a static point particle with a mass $M$. The Schwinger-Keldysh formalism is used to derive real and causal effective

RELIGIUSITAS DENGAN FLOW AKADEMIK PADA SISWA

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Putri Saraswati

2018-02-01

Full Text Available Problems in education are students who experience boredom in the learning process, whereas in the learning required concentration, interest and motivation, which required students to experience flow. Flow itself blends in total concentration which refers to the solemn concept in religiosity. The purpose of this research is to know religiosity relationship with academic flow. The design of this study is non-experimental correlation type. The data retrieval technique uses cluster sampling technique. Totals subjects as many as 222 students in city of Malang. Data collection method used in this research is the scale of religiosity made by the researcher. Then the scale of academic flow using the scale of LIS (The flow inventory for student, the researchers add some items in the scale of LIS. Data analysis method used product moment. The results of data analysis obtained r = 0.508 p = 0.000 (sig <0.01 means that this study shows a significant positive relationship between religiosity and academic flow. While the effective contribution of religiosity to academic flow is 25.8% and the rest equal to 74.2%, influenced by other factors.

Benarkah Self Esteem Mempengaruhi Prestasi Akademik?

OpenAIRE

Wibowo, Satrio Budi

2016-01-01

Self-esteem determines a person's overall mental development, it can even affect human behavior. The debate arose when researchers try to explain, whether student achievement is influenced by self-esteem? The author conducted a meta-analysis studies in attempt to clarify the relationship between the variables of self-esteem with academic achievement variable. This research analyzed over sixteen research journals, in which there are 29 studies that examine a relationship between self-esteem an...

Pramana – Journal of Physics | Indian Academy of Sciences

Indian Academy of Sciences (India)

We review a novel approach to the superconductive proximity effect in disordered normal–superconducting (N–S) structures. The method is based on the multicharge Keldysh action and is suitable for the treatment of interaction and fluctuation effects. As an application of the formalism, we study the subgap conductance and ...

Peningkatan Kemampuan Memahami Bacaan Bahasa Arab Melalui Teknik Pembelajaran SQ4-R (Penelitian Tindakan pada Mahasiswa Pendidikan Bahasa Arab Jurusan Tarbiyah STAIN Kendari)

OpenAIRE

Batmang, Batmang

2013-01-01

Tujuan dari penelitian ini adalah untuk meningkatkan kemampuan siswa pada semester ke enam Departemen Arab Bahasa Pendidikan Akademik 2012-2013 dalam memahami teks-teks Arab dengan penerapan teknik pembelajaran SQ4-R. Penelitian ini merupakan penelitian tindakan dan pendekatan kualitatif. Metode untuk mengumpulkan data yang: observasi, wawancara, portofolio, membaca tes pemahaman, dan catatan lapangan. Data dianalisis secara kualitatif dengan mengurangi, menyajikan dan dengan menarik kesimpul...

The temperature dependence of quantum spin pumping generated using electron spin resonance with three-magnon splittings

International Nuclear Information System (INIS)

Nakata, Kouki

2013-01-01

On the basis of the Schwinger–Keldysh formalism, we have closely investigated the temperature dependence of quantum spin pumping generated using electron spin resonance. We have clarified that three-magnon splittings excite non-zero modes of magnons and characterize the temperature dependence of quantum spin pumping generated using electron spin resonance. (paper)

The Group Neutron Data Library (GNDL)

International Nuclear Information System (INIS)

Voronkov, A.V.; Zhuravlev, V.I.; Natrusova, E.G.

1987-01-01

The paper describes the structure, organization and basic data representation formats of the GNDL, which was developed at the M.V. Keldysh Institute of Applied Mathematics of the USSR Academy of Sciences for the purpose of neutron data storage and retrieval. A simple method for linking up applications programs with the library is proposed. (author)

Photoreflection investigations of the dopant activation in InP doped with beryllium ions

International Nuclear Information System (INIS)

Avakyants, L.P.; Bokov, P.Yu.; Chervyakov, A.V.

2005-01-01

The processes of the dopant activation in the InP crystals implanted with Be + ions (energy 100 keV, dose 10 13 cm -2 and subsequent thermal annealing during 10 s) have been studied by means of photoreflection spectroscopy. Spectral lines of the crystal InP were absent in the photoreflection spectra of the samples annealed at temperatures less then 400 Deg C. This fact is connected with the disordering of the crystal structure due to the ion implantation. In the temperature range 400-700 Deg C the lines from InP band gap (1.34 eV) and conductance band-spin-orbit splitting valence subband (1.44 eV) have been observed due to the recovery of the crystal structure. In the photoreflectance spectra of a 800 Deg C annealed sample the Franz-Keldysh oscillations have been observed, which can be an evidence in favour of the dopant activation. Carrier concentration calculated from the period of Franz-Keldysh oscillations was equal to 2.2 x 10 16 cm -3 [ru

The Effect of Multimedia Usage on Academic Achievement and Anxiety of Primary School Students [Çoklu Ortam Kullanımının İlkokul Öğrencilerinin Akademik Başarılarına ve Kaygılarına Etkisi

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Hasan Çoruk

2017-04-01

Full Text Available This study aimed to investigate the effect of multimedia material covering 4th grade mathematics course fractions topic on students’ academic achievement levels, math anxiety, computer anxiety levels and thoughts on multimedia. A quasi-experimental design with pre-test - post-test and control group was conducted. The study was carried out with 31 students in each group: 13 male and 18 female students in the experimental group and 12 male and 19 female students in the control group. “Fractions Achievement Test”, “Mathematics Anxiety Scale”, “Computer Anxiety Scale”, and “Interview Form” were used as data collection tools. It was concluded that multimedia applications were more effective than traditional teaching methods in terms of improving academic achievement. According to the math anxiety data, neither multimedia applications nor traditional teaching methods were effective in relieving math anxiety of the students. The anxiety existing before the study was significantly reduced. The analysis of the interview forms indicated that multimedia applications helped students in some areas such as effective presentation, revising the subjects, increasing the interest in the course and providing a fun study environment. Multimedia applications were recommended to be used effectively in other courses as well in terms of lesson presentation, course revision and educational games. [Bu çalışmanın amacı 4. sınıf matematik dersi kesirler konusunda hazırlanan çoklu ortamların öğrencilerin akademik başarı düzeylerine, matematik kaygı düzeylerine, bilgisayar kaygı düzeylerine ve çoklu ortamlar hakkında düşüncelerine etkisini araştırmaktır. Araştırmada ön test - son test kontrol gruplu yarı deneysel desen kullanılmıştır. Deney grubunda 13 erkek ve 18 kız, kontrol grubunda da 12 erkek ve 19 kız olmak üzere 31’er öğrenci ile çalışma tamamlanmıştır. Veri toplama araçları olarak “Kesirler Konusu

Microphysical and chemical characteristics of near-water aerosol over White and Kara Seas

Science.gov (United States)

Terpugova, S. A.; Polkin, V. V.; Panchenko, M. V.; Golobokova, L. P.; Kozlov, V. S.; Shmargunov, V. P.; Shevchenko, V. P.; Lisitzin, A. P.

2009-04-01

The results are presented of five-year-long (2003-2007) study of the spatial - temporal variability of the near-water aerosol in the water area of White and Kara Seas (55, 64, 71 and 80-th cruises of RV "Professor Shtockman"; 53 and 54-th cruises of RV "Akademik Mstislav Keldysh"). Measurements of aerosol microphysical characteristics were carried out by means of the automated mobile aerosol complex consisting of nephelometer, photoelectric counter and aethalometer. The aerosol disperse composition was studied with photoelectric counter in 256 size intervals from 0.4 to 10 m. About 1500 series of measurements were carried out in White Sea, and about 1400 series in Kara Sea. Chemical characteristics of aerosol were determined from samples collected on aerosol filters (92 samples were collected in White Sea and 48 in Kara Sea). The ion composition was determined under laboratory conditions. The H+, Na+, K+, Ca2+, Mg2+, NH4+, Cl-, NO3-, HCO3-, SO42- ions were under examination. Comparing aerosol characteristics of two seas, one can note that the mean values of the aerosol content parameters in Kara Sea are less than in White Sea. The ratio of the aerosol mass concentration are from 2 (Yamal Peninsula, northern part of Novaya Zemlya) to 9 times (Blagopoluchia Bay, Ob' Gulf). The differences in the concentration of black carbon vary from 3 (Yamal Peninsula) to 17 times (Blagopoluchia Bay). The differences in the aerosol number concentration NA are not so big. The values NA near Kara Gate, Yamal Peninsula and northern part of Novaya Zemlya are practically the same as in White Sea. The concentration NA at Ob' gulf is one order of magnitude less than in White sea. The obtained aerosol volume size distributions were approximated by the sums of two fractions, submicron and coarse, with lognormal size distributions. The mean volume size distribution of submicron fraction in White Sea is approximated by the distribution with the variance of the radius logarithm s=0.6 and modal

Pengaruh Strategi SQ4R Tipe Bantuan Multimedia vs Buku Teks, Pengetahuan Awal, Gaya Belajar Kolb terhadap Hasil Belajar Bahasa Inggris Teknik

OpenAIRE

Meiti Leatemia

2014-01-01

Penelitian ini bertujuan menyelidiki pengaruh strategi SQ4R tipe bantuan multimedia versus buku teks, pengetahuan awal dan gaya belajar terhadap hasil belajar bahasa Inggris Teknik. Subjek penelitian adalah 96 mahasiswa  Teknik Sipil dan Mesin Politeknik Negeri Ambon tahun akademik 2011-2012. Desain eksperimen menggunakan kuasi versi  factorial  (2 x 2 x 2) pre test-post test non-equivalent control group design. Analisis data menggunakan statistik Three Ways ANOVA. Pengujian hipotesis dilakuk...

Hubungan Motivasi Belajar dengan Prokrastinasi Akademik Siswa

OpenAIRE

Mayrika Nitami; Daharnis Daharnis; Yusri Yusri

2015-01-01

Academic procrastination is a bad behavior because it obstructs the students to achieve the goal of learning. Procrastination is affected by some factors, one of them is learning motivation. Students attract to do their homework, although they do it at school, late report and disturb their friend in learning. All of that are characteristics of academic procrastination. The research purposes are to describe student learning motivation, academic procrastination, and the correlation of learning ...

Hubungan Motivasi Belajar dengan Prokrastinasi Akademik Siswa

Directory of Open Access Journals (Sweden)

Mayrika Nitami

2015-03-01

Full Text Available Academic procrastination is a bad behavior because it obstructs the students to achieve the goal of learning. Procrastination is affected by some factors, one of them is learning motivation. Students attract to do their homework, although they do it at school, late report and disturb their friend in learning. All of that are characteristics of academic procrastination. The research purposes are to describe student learning motivation, academic procrastination, and the correlation of learning motivation and academic procrastination of student at SMP N 25 Padang. This research is a descriptive correlational. The population are 482 students of class VII and class VIII SMP N 25 Padang. The samples are 233 students who gained by proportional random sampling. The instrument is learning motivation questionnare and academic procrastination questionnare. The data is analyzed by descriptive statistic method and pearson product moment correlation.The results show that 1 student’s learning motivation is categorized high, 2 student’s academic procrastination is categorized medium, 3 there is negative correlation between learning motivation with academic procrastination of students. The coefficient correlation is r -0,636 with significant 0,000. The higher motivation that the students have the lower their academic procrastination. Therefore students learning motivation can prevent academic procrastination. Guidance and counseling teachers have to help increase their learning motivation and solve their academic procrastination by guidance and counseling services.

KARAKTER NORMATIF ISI NASKAH AKADEMIK UNDANG-UNDANG

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Ni Putu Niti Suari Giri

2014-04-01

Full Text Available The Article 43(3 Act Number 12, 2011 concerning Regulations Makingstipulatedthat theact draft from DPR,  President, or DPD must be accompanied the academic text. However the function was from the obligation enclosed by thesubmitting the academic text still not well understood, so as the academic text was still being considered unimportant and ignored in the submitting act draft. Starting fromthese problems, then the problem that emerged that is what is the normative character of the contents of the academic text according to the law and the doctrine of legal knowledge. The purposeis tounderstand thecharacter ofthe normativecontent of the academic text according to the law and the doctrine of legal knowledge. The research that used was the juridical  normativeresearch. The legal source took form the regulations, literatures, results of the researches, papers in the seminar, the journals, articles, and reading materials that were linked with the problem that was studied in this research, the dictionaries and the legal encyclopedias. The use ofthe word'shall' in the regulations, that wordsis usedforthe fulfillment ofa conditionorspecific requirements. If the obligation that was arranged this was not fulfilled, that was relevant did not receive something or the matter that necessarily will be got if the condition or this condition was fulfilled. So the regulation to the Article 43 (3 was valid. The characteristics from the regulation concerning the obligation enclosed the academic text in putting forward the act draft  was to be imperative. The word'shall' bind the DPR, President and DPD to submitting  the academic text. If the academic text was not submitted, then the consequences that the act draftcould not be processed to the further stage.

Pengaruh Penggunaan Smartphone terhadap Nilai Akademik Mahasiswa

Directory of Open Access Journals (Sweden)

Naova Maria

2013-12-01

Full Text Available Advances in technology are now starting to lead to mobile-based technologies. Thus, the use of smartphones is increasingly favored by public, especially college students that are discussed in this study. Effects of smartphones use is discussed emergingly in which many studies state that smartphone brings negative side effects as well as positive side effects. Therefore, this study will discuss the side effects of smartphone use among college students towards academic values obtained in the course (GPA in order to determine whether smartphone use brings influence on students' academic value or not.

Retarded Propagator Representation of Out-of-Equilibrium Thermal Field Theories

International Nuclear Information System (INIS)

Dadic, I.

2009-01-01

We represent out of equilibrium thermal field theories with finite time path in terms of retarded propagators exclusively. For the particle number, defined as the equal time limit of the Keldysh propagator, the time ordering of the diagrams contributing is particularly simple: all external end-points of propagators have maximal time, there are no internal vertices with locally maximal time, the property which guaranties causality), there is, at least one 'sink' vertex (vertex with locally minimal time). The diagram looks like fisher net hanging on external vertices. At the 'sink' vertices energy is not conserved, thus establishing realisation of uncertainty relations in out of equilibrium TFT. Even more, at the equal-time limit, the terms conserving energy at 'sink' vertices vanish. This fact eliminates pinching problem and enables safe time→∞ limit. The retarded propagator in higher orders is regularized only as a part of of the diagram connected to equal time limit of multi point Green function representing expectation value of the product of number operators. These properties indicate clear advantage of finite time path, in large time limit over the use of Keldysh time path.

Under-the-barrier dynamics in laser-induced relativistic tunneling.

Science.gov (United States)

Klaiber, Michael; Yakaboylu, Enderalp; Bauke, Heiko; Hatsagortsyan, Karen Z; Keitel, Christoph H

2013-04-12

The tunneling dynamics in relativistic strong-field ionization is investigated with the aim to develop an intuitive picture for the relativistic tunneling regime. We demonstrate that the tunneling picture applies also in the relativistic regime by introducing position dependent energy levels. The quantum dynamics in the classically forbidden region features two time scales, the typical time that characterizes the probability density's decay of the ionizing electron under the barrier (Keldysh time) and the time interval which the electron spends inside the barrier (Eisenbud-Wigner-Smith tunneling time). In the relativistic regime, an electron momentum shift as well as a spatial shift along the laser propagation direction arise during the under-the-barrier motion which are caused by the laser magnetic field induced Lorentz force. The momentum shift is proportional to the Keldysh time, while the wave-packet's spatial drift is proportional to the Eisenbud-Wigner-Smith time. The signature of the momentum shift is shown to be present in the ionization spectrum at the detector and, therefore, observable experimentally. In contrast, the signature of the Eisenbud-Wigner-Smith time delay disappears at far distances for pure quasistatic tunneling dynamics.

JPRS Report, Science & Technology, USSR: Earth Sciences

Science.gov (United States)

1988-02-26

Shirshov, USSR Academy of Sciences, Moscow] lflllrtll-Inf0rTtJ;0n ^ fr" °n the morPhol°gy> ecology and propagation of aggregations of algae...42nd cruise of the research vessel "Akademik Kurchatov» between Ampere and Josephine Seamounts some 670 km to the west of the Strait of Gibraltar in...railroad roadbeds. Lithomonitoring must be carried out in many regions for ensuring the ecological purity of economic activity and protection of

Heat conduction in caricature models of the Lorentz gas

International Nuclear Information System (INIS)

Kramli, A.; Simanyi, N.; Szasz, D.

1987-01-01

Heat transport coefficients are calculated for various random walks with internal states (the Markov partition of the Sinai billiard connects these walks with the Lorentz gas among a periodic configuration of scatterers). Models with reflecting or absorbing barriers and also those without or with local thermal equilibrium are investigated. The method is unified and is based on the Keldysh expansion of the resolvent of a matrix polynomial

APLIKASI KRS ONLINE BERBASIS WEB DAN MOBILE PADA PROGRAM STUDI DIII TEKNIK KOMPUTER POLITEKNIK HARAPAN BERSAMA TEGAL

Directory of Open Access Journals (Sweden)

Dwi Wahyu Susanti

2016-03-01

Full Text Available Pengisian Kartu Rencana Studi (KRS merupakan bagian yang berperan penting dalam sistemakademik Program Studi DIII Teknik Komputer PoliTeknik Harapan Bersama Tegal. Sistem pengisianKRS yang berjalan selama ini di masih menggunakan sistem manual sehingga dengan semakinbanyaknya jumlah mahasiswa membuat sistem ini tidak efisien baik dari segi waktu maupun biaya.Pembuatan aplikasi KRS online berbasis web dan mobile bertujuan untuk menggantikan sistem KRSmanual yang berjalan saat ini agar nantinya kegiatan perkuliahan mahasiswa dapat berjalan lancar.Dalam pembuatan sistem ini menggunakan metode observasi, wawancara serta studi literatur, denganmenggunakan sample data di antaranya data mahasiswa, data mata kuliah semester 1 sampai dengansemester 6 serta data dosen pembimbing akademik Prodi DIII Teknik Komputer Tahun akademik2013/ 2014. Perangkat keras yang digunakan yaitu 1 unit laptop Compaq Presario CQ43 denganspesifikasi processor AMD E-300, RAM 2,0 GB serta OS Windows 7 Ultimate. Sedangkan perangkatlunak yang digunakan yaitu bahasa pemrograman PHP untuk aplikasi berbasis web dan XHTML untukaplikasi berbasis mobile, MYSQL, XAMPP dan web editor Macromedia Dreamweaver 6. Hasilpenelitian ini menunjukkan bahwa dengan diterapkannya sistem baru yaitu dengan dibuatnya aplikasipengisian KRS online berbasis web dan mobile di Program Studi DIII Teknik Komputer PoliTeknikHarapan Bersama maka proses pengisian KRS akan lebih praktis dan efisien baik dari segi waktumaupun biaya.Kata Kunci : KRS Online, Web, Mobile.

PEMBELAJARAN THINK-PAIR-SHARE, KETERAMPILAN METAKOGNITIF, DAN HASIL BELAJAR KOGNITIF SISWA SMA

Directory of Open Access Journals (Sweden)

Sri Amnah S.

2012-05-01

Full Text Available Abstract: Think-Pair-Share Learning, Meta-cognitive Skills and Cognitive Learning Outcomes. The study investigates the effects of meta-cognitive skills based Think-Pair-Share cooperative learning on meta-cognitive skills and cognitive learning outcomes of 11th grade students of Senior High Schools in Pekanbaru. The sample consists of 11th grade students of SMA 9 as an experiment group and 11th grade students SMA 10 as a control group. Based on analyzing the data using ANCOVA, the results show that there is a signifi­cant difference in meta-cognitive skills and cognitive learning outcomes of the students in the experimental and the control groups, and there is no significant difference between students who have high and low academic levels in their meta-cognitive skills and cognitive learning outcomes. Abstrak: Pembelajaran Think-Pair-Share, Keterampilan Metakognitif, dan Hasil Belajar Kognitif Siswa SMA. Penelitian ini bertujuan mengukur pengaruh pembela­jaran koperatif Think-Pair-Share terha­dap keterampilan metakognitif dan hasil belajar kognitif siswa SMA. Sampel dipilih secara acak dari popu­lasi 13 SMA di Pekanbaru. Dengan menggunakan ANAKOVA, hasilnya menunjukkan bahwa terdapat per­bedaan yang nyata keterampilan metakognitif dan hasil belajar kognitif siswa di kelompok eksperimental dan kelompok control, dan tidak ada perbedaan yang nyata antara siswa berkemampuan akademik tinggi dan akademik rendah pada keterampilan metakognitif dan hasil belajar kognitifnya.

Signatures of Quantum Transport Through Two-Dimensional Structures With Correlated and Anti-Correlated Interfaces

OpenAIRE

Low, Tony; Ansari, Davood

2008-01-01

Electronic transport through a 2D deca-nanometer length channel with correlated and anti-correlated surfaces morphologies is studied using the Keldysh non-equilibrium Green function technique. Due to the pseudo-periodicity of these structures, the energy-resolved transmission possesses pseudo-bands and pseudo-gaps. Channels with correlated surfaces exhibit wider pseudo-bands than their anti-correlated counterparts. By surveying channels with various combinations of material parameters, we fou...

The Effects of Learning Activities Corresponding with Students’ Learning Styles on Academic Success and Attitude within the Scope of Constructivist Learning Approach: The Case of the Concepts of Function and Derivative [Yapılandırmacı Öğrenme Yaklaşımı Kapsamında, Öğrencilerin Öğrenme Stillerine Uygun Öğrenme Etkinliklerinin Akademik Başarı ve Tutuma Etkileri: Fonksiyon ve Türev Kavramı Örneklemesi

Directory of Open Access Journals (Sweden)

Kemal Özgen

2014-04-01

Full Text Available The aim of this study was to identify the effects of learning activities according to students’ learning styles on students’ academic success and attitude towards mathematics within a scope of constructivist learning approach. The study had a semi-experimental research design based on the pre test-post test model with a control group. The participants of the study were students studying at a state high school in the 2010-2011 academic year. As part of the study, activities which were suitable to the students’ learning styles were developed within the scope of constructivist learning approach in line with McCarthy’s 4MAT system with 8 steps of learning and used for the learning of the concepts of function and derivative. Data were collected using data collection tools such as a personal information form, non-routine problems, and a mathematics attitude scale. Descriptive and non-parametric statistics were used for the analysis of quantitative data. Data analysis indicated that, the learning process in which activities appropriate for students’ learning styles were used to contribute to an increase in the students’ academic success and problem solving skills. Yet, there was no statistically significant difference in students’ attitudes towards mathematics. [Bu araştırmanın amacı, yapılandırmacı öğrenme yaklaşımı kapsamında, öğrencilerin öğrenme stillerine uygun öğrenme etkinliklerinin öğrencilerin akademik başarılarına ve matematiğe yönelik tutumlarına etkilerini belirlemektir. Araştırma yarı deneysel bir çalışmadır ve kontrol gruplu ön test-son test modeline dayanmaktadır. Araştırmanın çalışma grubu, 2010-2011 eğitim-öğretim yılında bir devlet lisesindeki öğrencilerden oluşmaktadır. Bu çalışmada fonksiyon ve türev kavramlarının öğrenimi sürecinde, McCarthy’nin 8 aşamalı 4MAT sistemi benimsenerek öğrencilerin öğrenme stillerine uygun öğrenme etkinlikleri geli

Index summation in real time statistical field theory

International Nuclear Information System (INIS)

Carrington, M.E.; Fugleberg, T.; Irvine, D.S.; Pickering, D.

2007-01-01

We have written a Mathematica program that calculates the integrand corresponding to any amplitude in the closed-time-path formulation of real time statistical field theory. The program is designed so that it can be used by someone with no previous experience with Mathematica. It performs the contractions over the tensor indices that appear in real time statistical field theory and gives the result in the 1-2, Keldysh or RA basis. The program treats all fields as scalars, but the result can be applied to theories with dirac and lorentz structure by making simple adjustments. As an example, we have used the program to calculate the ward identity for the QED 3-point function, the QED 4-point function for two photons and two fermions, and the QED 5-point function for three photons and two fermions. In real time statistical field theory, there are seven 3-point functions, 15 4-point functions and 31 5-point functions. We produce a table that gives the results for all of these functions. In addition, we give a simple general expression for the KMS conditions between n-point green functions and vertex functions, in both the Keldysh and RA bases. (orig.)

Pool-Frenkel thermoelectric modulation of exciton photoluminescence in GaSe crystals

International Nuclear Information System (INIS)

Ertap, H.; Mamedov, G.M.; Karabulut, M.; Bacioglu, A.

2011-01-01

Effect of external field on the exciton photoluminescence of GaSe crystals has been investigated and it has been observed that the PL is quenched with the applied field. The changes observed in the PL spectra have been analyzed with impact exciton, Franz-Keldysh and Pool-Frenkel effects. From the analyses of the experimental data, it has been found that the intensity of direct free, indirect free and bound exciton peaks decreased exponentially with the square root of applied field as I∼exp-β√E. The energy positions of emission peaks were found to shift to longer wavelength with the applied field as ΔE∼β√E. From these findings, the Pool-Frenkel thermoelectric field effect is seen to be the dominant mechanism in the variation of exciton PL with the applied field even though the impact exciton and Franz-Keldysh effects contribute. - Highlights: → Exciton PL intensity varies with the applied field. It decreases with the square root of E in accordance with Pool-Frenkel effect. → In the intrinsic region of PL spectrum, lines belonging to direct and indirect free/bound excitons were observed. → Line positions shifted to longer wavelengths with the applied field. → It was shown that amplitude modulation of exciton PL with electric field was possible.

PROKRASTINASI AKADEMIK MAHASISWA PADA MATA KULIAH ALJABAR LINEAR

OpenAIRE

Rahman Cahyadi

2018-01-01

ABSTRACT Each lecturer gives a college contract at the beginning of the lecture meeting, one of the contents is about the timetable for collecting tasks. It  found  that there are students whose job values are low because they often delay the collection of tasks. Because delays in the collection of tasks have an effect on the low value of student assignments, then it needs to be analyzed more about the factors causing delay of academic duty of student. This study only consists of one variable...

Akademik Bir Disiplin Olarak Aile Hekimliği

OpenAIRE

Ak, Muharrem

2015-01-01

Family medicine is freuquently identified as a health transformation system in the community. However, Family Medicine is a distinct and independent academic discipline with specific clinic interventions, journals and associations represented both nationaly and internationaly. In this respect brief history of development, core competencies and role of family medicine in health service delivery in the process of health transformation system was evaluated. Key words: Family Medicine; Acada...

Hubungan Konsep Diri Dengan Prestasi Akademik Mahasiswa Keperawatan

OpenAIRE

Pambudi, Prabawati Setyo; Wijayanti, Diyan Yuli

2012-01-01

All forms of belief, feeling, and judgment of individuals believed about him and process of social interaction with their surroundings. It's influences academic achievement. Students with less self-concept will tend to lose motivation and interest, which in turn impact the academic achievement. This research to determine the relationship between self-concept with academic achievement among students who achieved School of Nursing Diponegoro University. This study used a non-experimental quanti...

MEREDUKSI PROKRASTINASI AKADEMIK MAHASISWA MELALUI TEKNIK TOKEN ECONOMY

Directory of Open Access Journals (Sweden)

Mujiyati Mujiyati

2015-10-01

Full Text Available Abstract The research is motivated by the indiscipline of students in attendance in class, working and collecting duties. That is the behavior of student academic procrastination. Therefore, efforts were made to solve the problem, one of them using a technique token economy. The purpose of this study was to determine the effect of the use of techniques token economy in reducing students' academic procrastination. The research methodusing aquasi-experimentalanddata analysis techniquesusing the t test.The results showed that the use of techniques token economy proved to effectively reduce students' academic procrastination. Keywords: Academic Procrastination, Reinforcement, Token Economy

PROKRASTINASI AKADEMIK MAHASISWA PADA MATA KULIAH ALJABAR LINEAR

Directory of Open Access Journals (Sweden)

Rahman Cahyadi

2018-02-01

Full Text Available ABSTRACT Each lecturer gives a college contract at the beginning of the lecture meeting, one of the contents is about the timetable for collecting tasks. It  found  that there are students whose job values are low because they often delay the collection of tasks. Because delays in the collection of tasks have an effect on the low value of student assignments, then it needs to be analyzed more about the factors causing delay of academic duty of student. This study only consists of one variable and its descriptive nature taken without formulation of hypothesis. Population in this research is all student of mathematics education force 2014 and 2015 STKIP Muhammadiyah Pringsewu Lampung which amounts to 66. The sample of the research is the students who are indicated to have delayed academic task. The sampling technique used is purposive sampling technique. Based on the results of the study can be concluded that the factors causing academic procrastination internal factors include students' attitudes toward learning, factors of learning concentration, and study habits while the external factors include the factors of facilities and infrastructure. Internal factors are more dominant as factors of academic procrastination, this means that the cause of academic procrastination or postponing behavior comes from within the student. Keyword : Academic procrastination, factors of academic procrastination.

EFEKTIVITAS TEAM ASSISTED INDIVIDUALIZATION UNTUK MENGURANGI PROKRASTINASI AKADEMIK

Directory of Open Access Journals (Sweden)

SYAIFUL INDRA

2015-07-01

Full Text Available Academic procrastination understood as maladaptive behavior that can hinder academic success. Guidance and counseling implementation is can contribute to reduce the students academic procrastination. The service is can be optimally, the team assisted individualization of learning models combined in class format. This research uses quantitative methods. This type of study design is a Quasi Experiment with the design of the non-equivalent control group. The population are students MTS Negeri Koto Tangah Padang selected by purposive sampling technique. The instrument used to collect data using a scale, then analyzed using Wilcoxson Signed Ranks Test and Kolmogorov-Smirnov 2 Independent the samples. The findings of this research are, differences significant on academic procrastination the experiment group before and after the learning model technique team assisted individualization, There are differences in the control group on academic procrastination before and after the conventional learning model, and there are differences in the experiment group which given learning model technique team assisted individualization and the control group which given information service, learning model team assisted individualization technique can significantly reduce the students academic procrastination, it was can be used for a variety of problems related with learning activities.

Nu mår man? : en kvalitativ studie om tidspress och välmående

OpenAIRE

Asfedai Larsson, Joel; Falk, Emil

2017-01-01

Tidigare forskning visar att många akademiker upplever hög arbetsbelastning och påtaglig tidspress på arbetsplatsen. Det kan leda till en konflikt mellan arbete och fritid. Tidspress och välmående är aktuella ämnen, vilket dagspressen styrker. Tidigare forskning upplever dessutom en kunskapslucka vad gäller forskning om obalans mellan arbete och fritid, samt vilket effekt det får på individens välmående. Studiens syfte är således att utforska hur redovisningskonsulten upplever tidspress utifr...

Rn 222 in the Black Sea waters

International Nuclear Information System (INIS)

Arbuzova, A.P.; Batrakov, G.F.; Eremeev, V.N.; Zemlyanoj, A.D.; Ivanova, T.M.

1988-01-01

Results of Rn 222 concentration measurements in the Black Sea waters obtained in the summer of 1986 during the expedition of the Akademik Vernadskij research ship are presented. It is ascertained that the intensity of vertical turbulent exchange produces the main effect on Rn 222 distribution in the sea surface waters. The vertical distribution in a 200 m layer is characterized by the growth of concentration with depth, which is caused by the presence of Ra 226 increased concentration region, that coincides with the boundary layer between oxygen and hydrogen sulfide

Quantum transport in a ring of quantum dots

Energy Technology Data Exchange (ETDEWEB)

Sena Junior, Marcone I.; Macedo, Antonio M.C. [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil). Dept. de Fisica

2012-07-01

Full text: Quantum dots play a central role in the recent technological efforts to build efficient devices to storage, process and transmit information in the quantum regime [1]. One of the reasons for this interest is the relative simplicity with which its control parameters can be changed by experimentalists. Systems with one, two and even arrays of quantum dots have been intensively studied with respect to their efficiency in processing information carried by charge, spin and heat [1]. A particularly useful realization of a quantum dot is a ballistic electron cavity formed by electrostatic potentials in a two-dimensional electron gas. In the chaotic regime, the shape of the dot is statistically irrelevant and the ability to change its form via external gates can be used to generate members of an ensemble of identical systems. From a theoretical point of view, such quantum dots are ideal electron systems in which to study theoretical models combining phase-coherence, chaotic dynamics and Coulomb interactions. In this work, we use the Keldysh non-linear sigma model [2] with a counting field to study electron transport through a ring of four chaotic quantum dots pierced by an Aharonov-Bohm flux. This system is particularly well suited for studying ways to use the weak-localization effect to process quantum information. We derive the quantum circuit equations for this system from the saddle-point condition of the Keldysh action. The results are used to build the action of the corresponding supersymmetric (SUSY) non-linear sigma model. The connection with the random scattering matrix approach is then made via the color-flavor transformation. In the perturbative regime, where weak-localization effects appear, the Keldysh, SUSY and random scattering matrix approaches can be compared by means of independent analytical calculations. We conclude by pointing out the many advantages of our unified approach. [1] For a review, see Yu. V. Nazarov, and Ya. M. Blanter, Quantum

Impact of exchange-correlation effects on the IV characteristics of a molecular junction

DEFF Research Database (Denmark)

Thygesen, Kristian Sommer

2008-01-01

The role of exchange-correlation effects in nonequilibrium quantum transport through molecular junctions is assessed by analyzing the IV curve of a generic two-level model using self-consistent many-body perturbation theory (second Born and GW approximations) on the Keldysh contour. It is demonst...... of dynamic correlations introduces quasiparticle (QP) scattering which in turn broadens the molecular resonances. The broadening increases strongly with bias and can have a large impact on the calculated IV characteristic....

Theoretical and expert system approach to photoionization theories

Directory of Open Access Journals (Sweden)

Petrović Ivan D.

2016-01-01

Full Text Available The influence of the ponderomotive and the Stark shifts on the tunneling transition rate was observed, for non-relativistic linearly polarized laser field for alkali atoms, with three different theoretical models, the Keldysh theory, the Perelomov, Popov, Terent'ev (PPT theory, and the Ammosov, Delone, Krainov (ADK theory. We showed that aforementioned shifts affect the transition rate differently for different approaches. Finally, we presented a simple expert system for analysis of photoionization theories.

Loop Corrections to Standard Model fields in inflation

Energy Technology Data Exchange (ETDEWEB)

Chen, Xingang [Institute for Theory and Computation, Harvard-Smithsonian Center for Astrophysics,60 Garden Street, Cambridge, MA 02138 (United States); Department of Physics, The University of Texas at Dallas,800 W Campbell Rd, Richardson, TX 75080 (United States); Wang, Yi [Department of Physics, The Hong Kong University of Science and Technology,Clear Water Bay, Kowloon, Hong Kong (China); Xianyu, Zhong-Zhi [Center of Mathematical Sciences and Applications, Harvard University,20 Garden Street, Cambridge, MA 02138 (United States)

2016-08-08

We calculate 1-loop corrections to the Schwinger-Keldysh propagators of Standard-Model-like fields of spin-0, 1/2, and 1, with all renormalizable interactions during inflation. We pay special attention to the late-time divergences of loop corrections, and show that the divergences can be resummed into finite results in the late-time limit using dynamical renormalization group method. This is our first step toward studying both the Standard Model and new physics in the primordial universe.

Ionization and charge exchange in atom collision with multicharged ion

International Nuclear Information System (INIS)

Presnyakov, L.P.; Uskov, D.B.

1984-01-01

Single-electron ionization and charge exchange are considered in collisions of an atom with an ion of charge Z> or =3 and at velocities v>Z -1 /sup // 3 . The approach is based on the Keldysh quasiclassical method. The ionization and charge exchange processes are described within the framework of a single formalism. Effects of rotation and translation are taken into account. The calculated total and partial cross sections agree well with the available experimental data. OFF

Current distribution and conductance quantization in the integer quantum Hall regime

International Nuclear Information System (INIS)

Cresti, Alessandro; Farchioni, Riccardo; Grosso, Giuseppe; Parravicini, Giuseppe Pastori

2003-01-01

Charge transport of a two-dimensional electron gas in the presence of a magnetic field is studied by means of the Keldysh-Green function formalism and the tight-binding method. We evaluate the spatial distributions of persistent (equilibrium) and transport (nonequilibrium) currents, and give a vivid picture of their profiles. In the quantum Hall regime, we find exact conductance quantization both for persistent currents and for transport currents, even in the presence of impurity scattering centres and moderate disorder. (letter to the editor)

Current distribution and conductance quantization in the integer quantum Hall regime

Energy Technology Data Exchange (ETDEWEB)

Cresti, Alessandro [NEST-INFM and Dipartimento di Fisica ' E Fermi' , Universita di Pisa, via F Buonarroti 2, I-56127 Pisa (Italy); Farchioni, Riccardo [NEST-INFM and Dipartimento di Fisica ' E Fermi' , Universita di Pisa, via F Buonarroti 2, I-56127 Pisa (Italy); Grosso, Giuseppe [NEST-INFM and Dipartimento di Fisica ' E Fermi' , Universita di Pisa, via F Buonarroti 2, I-56127 Pisa (Italy); Parravicini, Giuseppe Pastori [NEST-INFM and Dipartimento di Fisica ' A Volta' , Universita di Pavia, via A Bassi 6, I-27100 Pavia (Italy)

2003-06-25

Charge transport of a two-dimensional electron gas in the presence of a magnetic field is studied by means of the Keldysh-Green function formalism and the tight-binding method. We evaluate the spatial distributions of persistent (equilibrium) and transport (nonequilibrium) currents, and give a vivid picture of their profiles. In the quantum Hall regime, we find exact conductance quantization both for persistent currents and for transport currents, even in the presence of impurity scattering centres and moderate disorder. (letter to the editor)

Dilepton spectrum from quark-gluon plasma in second Born approximation

International Nuclear Information System (INIS)

Makhlin, A.N.

1989-01-01

The real time temperature Keldysh technique has been used to calculate the rate of dilepton emission from quark-gluon plasma in the first order with respect to strong coupling constant. This approximation us shown to be inconsistent. The radiative corrections turned to be of the same order as the contribution of real processes with gluons. Nevertheless the general properties inherent in dilepton emission from continuous media can be verified by measuring the lepton distribution inside the dilepton. 11 refs.; 2 figs

The nonlocal operator expansion for structure functions of e+e- annihilation

International Nuclear Information System (INIS)

Balitsky, I.I.; Braun, V.M.

1989-01-01

The Wilson operator expansion is generalized to inclusive particle production in e + e - annihilation. This turns out to be possible at the price of doubling the number of quantum quark and gluon fields in a similar fashion that gives rise to the Keldysh technique for nonequilibrium processes. Well-known results on the leading logarithmic contributions to inclusive production are reproduced as the one-loop evolution of the string operator of the leading twist. The general structure of the power corrections 1/Q 2 is outlined. (orig.)

Recent progress in GeSi electro-absorption modulators

International Nuclear Information System (INIS)

Chaisakul, Papichaya; Marris-Morini, Delphine; Rouifed, Mohamed-Said; Coudevylle, Jean-René; Roux, Xavier Le; Edmond, Samson; Vivien, Laurent; Frigerio, Jacopo; Chrastina, Daniel; Isella, Giovanni

2014-01-01

Electro-absorption from GeSi heterostructures is receiving growing attention as a high performance optical modulator for short distance optical interconnects. Ge incorporation with Si allows strong modulation mechanism using the Franz–Keldysh effect and the quantum-confined Stark effect from bulk and quantum well structures at telecommunication wavelengths. In this review, we discuss the current state of knowledge and the on-going challenges concerning the development of high performance GeSi electro-absorption modulators. We also provide feasible future prospects concerning this research topic. (review)

Kondisi Stres Akademik Siswa SMA Negeri di Kota Padang

OpenAIRE

Taufik Taufik; Ifdil Ifdil

2014-01-01

This research conduct base from increasing the National Examination standards from recent years, and overload student’s learning activity in Senior High School (SMA). These conditions as triggers stress students, from a long time, its influence on their learning. Based that, the research is to identify level of student academic stress, and differences base gender, and school location. This research use Cluster Random Sampling. Samples are grouped into 3 (three), that’s school is located in do...

Analisa User Requirement Spesification Sistem Informasi Akademik On-line

OpenAIRE

Nurjoko, -

2011-01-01

System information (SI) has been very instrumental in improving competitive advantage (Competitive Advantage), to create value for the organization. not least in informatics and Business Darmajaya (IBI), a Higher Education Institution that made the Academic Information System (AIS) to support his efforts. To achieve this requires a development of the Academic Information System (AIS) are structured. Academic information systems that exist today with the new integrated financial information sy...

Kondisi Stres Akademik Siswa SMA Negeri di Kota Padang

Directory of Open Access Journals (Sweden)

Taufik Taufik

2014-01-01

Full Text Available This research conduct base from increasing the National Examination standards from recent years, and overload student’s learning activity in Senior High School (SMA. These conditions as triggers stress students, from a long time, its influence on their learning. Based that, the research is to identify level of student academic stress, and differences base gender, and school location. This research use Cluster Random Sampling. Samples are grouped into 3 (three, that’s school is located in downtown, midtown and the Suburbs. Research findings show that there are 15% of student’s stress academic at low levels of, 71,8% experiencing stress academic at medium level, and 13.2% of students experiencing stress academic at high level. There was no significant difference between the academic stress Student SMAN in Padang by location and gender. These research findings can then be an important basic need for guidance and counseling services in order to decrease the level of stress of academic students in Padang city, so that they can learn by making every effort that is optimal.

Analisis hubungan prestasi akademik mahasiswa dengan akses sumber informasi

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Prijana Prijana

2018-06-01

Full Text Available Introduction. In the process of reading, students require different information sources to increase their academic achievement. This paper aims to examine information sources which have a relationship with students academic achievement and become a reference in the development of information sources to support student academic achievement. Method. The research used an experimental study, with N = 38. Based on the value of chi-square of 11,613, a P-value of 0.169 with α = 0.25; df = 8, and the chi-quadrat table = 10.2. It showed that  chi-quadrat count (11.6 is more than chi-quadrat table (10.2. If chi-quadrat counts more than chi-quadrat table, the student academic achievement  has a significant relationship with access to information sources. Results and Discussions. The results showed that students' academic achievements have a significant relationship with access to information sources. The behavior of students in accessing information sources had moderate degrees of relationship with their academic achievement, which means that there is no dominant information source used by the students related to their academic achievement. Conclusion. In this study, students prefer to choose multi-acsess information resources, resulting in the spread of the values of the normal curve to the shape of academic achievements. Further research should discuss students' reading ability towards  the use of information sources.

Perancangan Sistem Informasi Akademik Lembaga Kursus Demi Music Center

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Sugiarto Hartono

2015-03-01

Full Text Available Evolution of technology will bring companies to have appropriate information systems to boost their businesses. Computerized information system is also needed by training courses like Demi Music Center. Demi Music Center realizes that computerized academic information system will help to optimize their business process. The purpose of this research is to analyze the operational business processes and academic administration at the DMC to determine deficiencies and problems occurred, then to provide a draft proposal of the new system in the DMC.. The method used is the method of analysis and design. Data collection methods used in this study was a survey, interviews, and literature. Outcome of this research is a design of academic information system based on desktop application. System can generate report easily and manage the data. Implementation of computerized academic information system can leverage the performance and increase efficiency of business process at Demi Music Center.

Atomic-structure effects in strong-field multiphoton detachment and ionization

International Nuclear Information System (INIS)

AAberg, T.; Mu, X.; Ruscheinski, J.; Crasemann, B.

1994-01-01

Above-threshold photoelectron detachment and ionization spectra are investigated theoretically in the tunneling and over-barrier regime as a function of wavelength (≥ 1.064 μm) and polarization of the electromagnetic field. It is found that the zeros in the initial-state wave function can drastically affect the shape of the high-energy photoelectron distribution. The phenomenon is not predicted by tunneling and related models and hence can test their validity and reveal whether Keldysh-type theories are in general applicable to strong-field multiphoton dynamics. (orig.)

Conserving GW scheme for nonequilibrium quantum transport in molecular contacts

DEFF Research Database (Denmark)

Thygesen, Kristian Sommer; Rubio, Angel

2008-01-01

We give a detailed presentation of our recent scheme to include correlation effects in molecular transport calculations using the nonequilibrium Keldysh formalism. The scheme is general and can be used with any quasiparticle self-energy, but for practical reasons, we mainly specialize to the so......-called GW self-energy, widely used to describe the quasiparticle band structures and spectroscopic properties of extended and low-dimensional systems. We restrict the GW self-energy to a finite, central region containing the molecule, and we describe the leads by density functional theory (DFT). A minimal...

Scanning tunneling microscopy of monoatomic gold chains on vicinal Si(335) surface: experimental and theoretical study

Energy Technology Data Exchange (ETDEWEB)

Krawiec, M.; Kwapinski, T.; Jalochowski, M. [Institute of Physics and Nanotechnology Center, M. Curie-Sklodowska University, pl. M. Curie-Sklodowskiej 1, 20-031 Lublin (Poland)

2005-02-01

We study electronic and topographic properties of the Si(335) surface, containing Au wires parallel to the steps. We use scanning tunneling microscopy (STM) supplemented by reflection of high energy electron diffraction (RHEED) technique. The STM data show the space and voltage dependent oscillations of the distance between STM tip and the surface which can be explained within one band tight binding Hubbard model. We calculate the STM current using nonequilibrium Keldysh Green function formalism. (copyright 2005 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

High-electric-field quantum transport theory for semiconductor superlattices

International Nuclear Information System (INIS)

Nguyen Hong Shon; Nazareno, H.N.

1995-12-01

Based on the Baym-Kadanoff-Keldysh nonequilibrium Green's functions technique, a quantum transport theory for semiconductor superlattices under high-electric field is developed. This theory is capable of considering collisional broadening, intra-collisional field effects and band transport and hopping regimes simultaneously. Numerical calculations for narrow-miniband superlattices in high electric field, when the hopping regime dominates are in reasonable agreement with experimental results and show a significant deviation from the Boltzmann theory. A semiphenomenological formula for current density in hopping regime is proposed. (author). 60 refs, 4 figs

Signatures of tunneling and multiphoton ionization in the electron-momentum distributions of atoms by intense few-cycle laser pulses

International Nuclear Information System (INIS)

Wickenhauser, M.; Tong, X. M.; Arbo, D. G.; Burgdoerfer, J.; Lin, C. D.

2006-01-01

Electron-momentum distributions for above-threshold ionization of argon in a few-cycle, linearly polarized laser pulse are investigated. Spectral features characteristic of multiphoton as well as tunneling ionization coexist over a range of the Keldysh parameter γ in the transition regime γ∼1. Surprisingly, the simple strong-field approximation (SFA) is capable of reproducing the key features of the two-dimensional momentum distributions found in the full solution of the time-dependent Schroedinger equation, despite the fact that SFA is known to severely underestimate the total ionization probability

Tunneling time, what is its meaning?

International Nuclear Information System (INIS)

McDonald, C R; Orlando, G; Vampa, G; Brabec, T

2015-01-01

The tunnel time ionization dynamics for bound systems in laser fields are investigated. Numerical analysis for a step function switch-on of the field allows for the tunnel time to be defined as the time it takes the ground state to develop the under-barrier wavefunction components necessary to achieve the static field ionization rate. A relation between the tunnel time and the Keldysh time is established. The definition of the tunnel time is extended to time varying fields and experimental possibilities for measuring the tunnel time are discussed

On the theory of phonoriton in cubic semiconductors with a degenerate valence band

International Nuclear Information System (INIS)

Nguyen Ai Viet; Nguyen Thi Que Huong; Le Qui Thong

1992-10-01

The ''phonoriton'' is an elementary excitation constructed from an exciton polariton and phonon in semiconductors under intense excitation by an electromagnetic wave near the exciton resonance (L.V. Keldysh and A.L. Ivanov, 1982). In this paper we develop a theory of phonoriton in direct band gap cubic semiconductor with a degenerate valence band using the simple model of J.L. Birman and B.S. Wang (1990). In addition to experimental proofs of the existence of phonoriton we propose an experiment to measure its flight time. (author). 33 refs

Internal wave structures in abyssal cataract flows

Science.gov (United States)

Makarenko, Nikolay; Liapidevskii, Valery; Morozov, Eugene; Tarakanov, Roman

2014-05-01

We discuss some theoretical approaches, experimental results and field data concerning wave phenomena in ocean near-bottom stratified flows. Such strong flows of cold water form everywhere in the Atlantic abyssal channels, and these currents play significant role in the global water exchange. Most interesting wave structures arise in a powerful cataract flows near orographic obstacles which disturb gravity currents by forced lee waves, attached hydraulic jumps, mixing layers etc. All these effects were observed by the authors in the Romanche and Chain fracture zones of Atlantic Ocean during recent cruises of the R/V Akademik Ioffe and R/V Akademik Sergei Vavilov (Morozov et al., Dokl. Earth Sci., 2012, 446(2)). In a general way, deep-water cataract flows down the slope are similar to the stratified flows examined in laboratory experiments. Strong mixing in the sill region leads to the splitting of the gravity current into the layers having the fluids with different densities. Another peculiarity is the presence of critical layers in shear flows sustained over the sill. In the case under consideration, this critical level separates the flow of near-bottom cold water from opposite overflow. In accordance with known theoretical models and laboratory measurements, the critical layer can absorb and reflect internal waves generated by the topography, so the upward propagation of these perturbations is blocked from above. High velocity gradients were registered downstream in the vicinity of cataract and it indicates the existence of developed wave structures beyond the sill formed by intense internal waves. This work was supported by RFBR (grants No 12-01-00671-a, 12-08-10001-k and 13-08-10001-k).

Livschancer og mobilitet

DEFF Research Database (Denmark)

D. Munk, Martin

sociale positioner end de lidt ældre fødselskohorter? Ved chance tænkes på begrebet livschance, som dels kan anvendes som et empirisk begreb, f.eks. som rækkeprocenter i en kontingenstabel (jf. Hansen 1995), og dels som et mere teoretisk sociologisk begreb i Max Webers tradition, som refererer til en...... persons ”klasse situation”, der indebærer en vis sandsynlighed for at have adgang til varer, forbrug og anerkendelse fra andre personer (Weber 1978: 302; Goldthorpe 1996). Her undersøges positionen som akademiker/direktør og som ikke-faglært arbejder, typiske yderpositioner i det sociale hierarki....

Ergenlik Dönemi Okuma Tutumu Ölçeği’nin Türkçe’ye Uyarlanması The Adaptasyon Of Survey Of Adolescent Reading Attitudes (Sara Into Turkish

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Muhammet BAŞTUĞ

2013-07-01

Full Text Available The aim of this study is to adapt the Survey of Adolescent Reading Attitudes SARA to Turkish, which was developed by McKenna, Conradi, Lawrance, Jang, and Meyer (2012, and to test it for validity and reliability. The rationale is that the scale involves one’s attitude towards digital reading. The sample was comprised of 702 sixth,seventh and eighth grade students in Konya- 343 of them being femaleand the remaining 359 being male. The original scale had 18 items infour sub-dimensions, namely academic reading in digital settings (AD,recreational reading in digital settings (RD, academic reading in printsettings (AP and recreational reading in print settings (RP. Theexploratory factor analysis and confirmatory factor analysis revealedthat the four original sub-dimensions were retained when two itemswere omitted. Cronbach’s alpha coefficients were 0.691, 0.802, 0.690,0.660 and 0.623 for the overall scale, RD, RP, AP and AD respectively.The results suggest that the adapted scale is reliable and valid. The 15-item finalized version is appropriate for the Turkish language and use inTurkey. In the development of reading environments and materials,identification of students’ attitudes toward reading in a multidimensionalway is expected to make great contributions to morequalified learning environments. Bu araştırmanın amacı, McKenna, Conradi, Lawrence, Jang ve Meyer (2012 tarafından geliştirilen Ergenlik Dönemi Okuma Tutumu Ölçeği’nin geçerlik ve güvenirliğinin yapılarak Türkçe’ye uyarlanmasıdır. Ölçeğin dijital okumaya karşı tutumu da kapsaması sebebiyle uyarlama çalışmasının uygun olacağı düşünülmüştür. Çalışma grubunu Konya ilinde yer alan ve 6,7 ve 8. Sınıflara devam eden 343’ü kız, 359’u erkek toplam 702 öğrenci oluşturmuştur. Ölçeğin orjinali 18 maddeden ve “Akademik Dijital, Serbest Dijital, Akademik Kağıt ve Serbest Kağıt” olmak üzere 4 alt boyuttan olu

Euclidean mirrors. Enhanced vacuum decay from reflected instantons

Energy Technology Data Exchange (ETDEWEB)

Akal, Ibrahim [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Theory Group; Moortgat-Pick, Gudrid [Hamburg Univ. (Germany). 2. Inst. fuer Theoretische Physik

2017-06-15

We study the tunneling of virtual matter-antimatter pairs from the quantum vacuum in the presence of a spatially uniform temporal electric background composed of of a strong slow field superimposed with a weak rapid field. After analytic continuation to Euclidean spacetime we obtain from the instanton equations two critical points. While one of them is the closing point of the instanton path, the other serves as an Euclidean mirror which reflects and squeezes the instanton. It is this reflection and shrinking which is responsible for an enormous enhancement of the vacuum pair production rate. We discuss how important features of this mechanism can be analysed and understood via such a rotation in the complex plane. Consistent with previous studies, we consider certain examples where we apply weak fields with a distinct pole structure in order to show that the reflection takes place exactly at the poles. We also discuss the effect of possible sub-cycle structures. We extend this reflection picture to fields which have no poles present and illustrate the effective reflections with explicit examples. An additional field strength dependence for the rate occurs in such cases. We analytically compute the characteristic threshold for this mechanism given by the critical combined Keldysh parameter. We discuss significant differences between these two types of fields. For various backgrounds, we present the contributing instantons and perform analytical computations for the corresponding rates treating both fields nonperturbatively. The validity of the results is confirmed by numerical computations. Considering different profiles for the strong field, we also discuss its impact on the critical combined Keldysh parameter.

Photoionization by a bichromatic field: Adiabatic theory

International Nuclear Information System (INIS)

Pazdzersky, V.A.; Yurovsky, V.A.

1995-01-01

Atom photoionization by the superposition of a fundamental field and its second harmonic is considered. The finite analytical expressions for the photoionization probability are obtained using the adiabatic approximation. They demonstrate that the photoelectron angular distribution has a polar symmetry when the electrical field strength has a maximal polar asymmetry and the distribution is asymmetrical when the field is symmetrical. A strict proof of the polar symmetry of the photoionization probability in the case of the electrical field with maximal asymmetry is deduced using the Keldysh-Faisal-Reiss theories. The obtained results are in agreement with the experimental data available

Kinetic equations with pairing correlations

International Nuclear Information System (INIS)

Fauser, R.

1995-12-01

The Gorkov equations are derived for a general non-equilibrium system. The Gorkov factorization is generalized by the cumulant expansion of the 2-particle correlation and by a generalized Wick theorem in the case of a perturbation expansion. A stationary solution for the Green functions in the Schwinger-Keldysh formalism is presented taking into account pairing correlations. Especially the effects of collisional broadening on the spectral functions and Green functions is discussed. Kinetic equations are derived in the quasi-particle approximation and in the case of particles with width. Explicit expressions for the self-energies are given. (orig.)

Non-perturbative methods applied to multiphoton ionization

International Nuclear Information System (INIS)

Brandi, H.S.; Davidovich, L.; Zagury, N.

1982-09-01

The use of non-perturbative methods in the treatment of atomic ionization is discussed. Particular attention is given to schemes of the type proposed by Keldysh where multiphoton ionization and tunnel auto-ionization occur for high intensity fields. These methods are shown to correspond to a certain type of expansion of the T-matrix in the intra-atomic potential; in this manner a criterium concerning the range of application of these non-perturbative schemes is suggested. A brief comparison between the ionization rate of atoms in the presence of linearly and circularly polarized light is presented. (Author) [pt

Tunneling-induced shift of the cutoff law for high-order above-threshold ionization

International Nuclear Information System (INIS)

Lai, X. Y.; Quan, W.; Liu, X.

2011-01-01

We investigate the cutoff law for high-order above-threshold ionization (HATI) within a semiclassical framework. By explicitly adopting the tunneling effect and considering the initial position shift of the tunneled electron from the origin in the model, the cutoff energy position in HATI spectrum exhibits a well-defined upshift from the simple-man model prediction. The comparison between numerical results from our improved semiclassical model and the quantum-orbit theory shows a good agreement for small values of the Keldysh parameter γ, implying the important role of the inherent quantum tunneling effect in HATI dynamics.

ANALISIS DAN PERANCANGAN SISTEM INFORMASI AKADEMIK DI STMIK AMIKOM PURWOKERTO

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Giat Karyono

2009-08-01

Full Text Available Academic Information Systems is one of the main functions in a data processing activities of students in Higher Education "STMIK AMIKOM Purwokerto”. This paper contains the results of the analysis and design of academic information system which can be used to facilitate service to students in the academic. This research uses the waterfall development model system. This research produces a design application program to assist academic part in processing the data processing students and lecturers at STMIK AMIKOM Purwokerto so that the institution has an academic information system faster, more efficient, and easy to use

Implementasi Framework Laravel Pada Aplikasi Pengolah Nilai Akademik Berbasis Web

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Sari Susanti

2017-04-01

Abstrak  Nilai merupakan salah satu hal penting di sekolah. berdasarkan peraturan menteri pendidikan dan kebudayaan Republik Indonesia nomor 66 tahun 2013 tentang standar penilaian pendidikan menyebutkan bahwa hasil penilaian oleh pendidik dan satuan pendidikan dilaporkan dalam bentuk nilai dan deskripsi pencapaian kompetensi kepada orang tua dan pemerintah. Nilai dan deskripsi pencapaian kompetensi siswa masih diolah secara manual sehingga membutuhkan waktu lama dalam pengerjaannya. Untuk itu dibutuhkan sebuah aplikasi yang dapat mengolah nilai. Pembuatan aplikasi web pengolahan nilai siswa adalah salah satu solusi untuk mengatasi lambatnya pengolahan nilai. Aplikasi web pengolahan nilai ini dibuat menggunakan model waterfall yang mencakup : analisis, desain, pengkodean dan pengujian. pada website ini penilaian diproses berdasarkan standar kurikulum 2013 yang memiliki tiga kompetensi nilai yaitu pengetahuan, keterampilan dan sikap. Hasil akhir dari ketiga nilai tersebut diproses menjadi nilai rapor. Pembuatan web ini menggunakan bahasa pemrograman PHP dan penyimpanan basis data MySQL. Dari hasil penelitian yang dilakukan diperoleh kesimpulan bahwa Aplikasi Web Pengolahan Nilai merupakan solusi yang membantu proses pengolahan nilai bagi wali kelas dan kemudahan bagi siswa untuk melihat nilainya.   Kata Kunci: Pengolahan Nilai, Aplikasi Web, Framework Laravel, Website, Kurikulum 2013.

Pengembangan SMS Gateway Layanan Informasi Akademik di STMIK GI MDP

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Fransiska Prihatini Sihotang

2017-08-01

Full Text Available Information technology can be utilized in education such as e-Learning and Academic Information System. STMIK GI MDP has applied information technology that provides ease for the dissemination of academic information to students. However, the parents of the students have not obtained the academic information of their children due to the lack of internet-related knowledge. Therefore, this study aims to create a service that is able to convey information to parents directly with SMS Gateway service. This research begins with the collection of user needs through observation techniques and interviews to academic staff and parents. Then performed the required feature analysis. Then the design of SMS Gateway application that will be embedded in existing academic applications and coding system. Gammu is used as a link between applications with mobile phones. The result of this research is the application of SMS Gateway service that can give the student academic information to the parents.

ANALISIS DAN STRATEGI MENINGKATKAN KEPUASAN MAHASISWA IPB TERHADAP PENYELENGGARAAN AKADEMIK

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Retnaningsih Retnaningsih

2009-01-01

Full Text Available Consumer is the determinant factor for the quality of services. Students as the one of stakeholders of Bogor Agricultural University (IPB needed to be given the best services. The aimed of this research were to analyze students satisfaction on academic performance in Bogor Agricultural University (IPB as well as the strategy to improve students satisfaction. The design of this research was cross sectional study, which carried out in IPB campus, Darmaga-Bogor, West Java for six months since September 2006 to February 2007. Number of samples were 600 students. The result showed that the atributs which needed to be improve in input stage were curriculum appropriateness with the expected competency and system information of incoming students by IPB and department. Meanwhile, on process stage the main priorities to be improved were the appropriateness of material lecture with current condition, the examples used to explain the lecture material, method of delivering lecture material orally, audio-visual equipment, teacher’s effort to make learning process lively, the ease of students to write down and understanding the lecture material, the implementation of learning process evaluation, administrative services in preparation class, teachers and students interaction, grade announcement, last assignment preparation including field study, last assignment administration, passing letter process in faculty, the convenience and cleanness of class, the appropriateness of number tools with number of students in laboratory, field work facility, references collection and the ease of references searching in library, last assignment and middle assignment scheduling, transcript of semester emerging, and also administration services. Whereas in output stage, decision making ability and planning implementation became main priority.

Pengaruh Persepsi Siswa Tentang Layanan Penguasaan Konten Terhadap Prokrastinasi Akademik

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relegia ita puspita

2017-08-01

Full Text Available The study is based on the phenomenon on the ground when researchers conducted a preliminary study at the time of PPL in SMA 3 Semarang, which shows that the relatively high level of academic procrastination. The purpose of this study is to predict the positive influence between students' perceptions about the mastery of content services to academic procrastination . This type of research is ex-post facto study. The study population was all students SMA 3 Semarang totaling 1008 students and the sample totaled 204 students use simpe random sampling by a draw. Data collection method used is a psychological scale and questionnaire questionnaire. The instrument has been tested for use in research the validity of the formula used by the Pearson product moment and reliability of the instrument with Alpha formula. Data were analyzed using simple regression analysis. The results showed a 43% positive influence on students' perceptions about the mastery of content services to academic procrastination. Conclusions from this research that there is a positive influence on students' perceptions about the mastery of content services to academic procrastination.

Faktor Penyebab Prokrastinasi Akademik Penyusunan Skripsi pada Mahasiswa FIP UNNES

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Zahratul Fitriah

2017-03-01

Full Text Available This study was conducted based on the phenomena that occurs in the Faculty of Education UNNES that 58% of students class of 2009 FIP UNNES still not complete his studies on the 9th semester, though they should have completed their studies. This study aim to know the causes of academic procrastination thesis preparation on the subject of research. This research is a descriptive survey. Data collection method using the questionnaire in the form of psychological scale. The result showed that the causes of academic procrastination thesis preparation at the Faculty of  Education students Unnes class of 2009 is, motivation 83%, doing other things more fun 79%, lack of assertiveness  79%, dislike of duty 78%, dreamer 75%, anxiety 73%, stress 73%, deffender 74%,  over doer 74%,  time management issue 72%, crisis maker 71%, fear of failure 71%, enjoy working under preasure 71%, self-depreciation 70%, hostility with other 70%, low discomfort tolerance 68%, poor task aproach  66%, perfectionisme 66%, parenting parents 76%, lecturers problems 73%, the bureaucracy complicated  73%, learning environment issue 63% and administrative services 55%

STRATEGI SELF-REGULATED LEARNING UNTUK MENURUNKAN TINGKAT PROKRASTINASI AKADEMIK SISWA

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Muhammad Iqbalul Ulum

2016-12-01

Full Text Available Academic procrastination is a behavior that should be avoided by students because it would give a bad influence, especially the academic achievement. One of the factors that lead to academic procrastination is lack of self-regulation in learning. Therefore, it is necessary for students to have self-regulated learning. This research aimed to test the self-regulated learning strategy to reduce the level of academic procrastination XI grade student of SMAN 1 Ngamprah of the academic year 2015/2016 West Bandung Regency. The method used is a quasi-experimental nonequivalent (pretest and posttest control group design. Sampling was done by using purposive sampling technique. Instrument used is The Academic Procrastination State Inventory (APSI developed by Henri C. Schouwenburg. The sample are 68 students whereas devided into experiment and control group. Data analyzed using the Mann-Whitney test. Result shows that self-regulated learning are effective for lowering the level of academic procrastination.

Faktor Penyebab Prokrastinasi Akademik Penyusunan Skripsi Pada Mahasiswa Fip Unnes

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Zahratul Fitriah

2017-03-01

Full Text Available This study was conducted based on the phenomena that occurs in the Faculty of Education UNNES that 58% of students class of 2009 FIP UNNES still not complete his studies on the 9th semester, though they should have completed their studies. This study aim to know the causes of academic procrastination thesis preparation on the subject of research. This research is a descriptive survey. Data collection method using the questionnaire in the form of psychological scale. The result showed that the causes of academic procrastination thesis preparation at the Faculty of  Education students Unnes class of 2009 is, motivation 83%, doing other things more fun 79%, lack of assertiveness  79%, dislike of duty 78%, dreamer 75%, anxiety 73%, stress 73%, deffender 74%,  over doer 74%,  time management issue 72%, crisis maker 71%, fear of failure 71%, enjoy working under preasure 71%, self-depreciation 70%, hostility with other 70%, low discomfort tolerance 68%, poor task aproach  66%, perfectionisme 66%, parenting parents 76%, lecturers problems 73%, the bureaucracy complicated  73%, learning environment issue 63% and administrative services 55%

Pengukuran End-User Computing Satisfaction Atas Penggunaan Sistem Informasi Akademik

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Boy Suzanto

2015-04-01

Full Text Available Academic information system is very dependent on the components in generating information systems that fit their needs. The gap that occurs in the use of academic information system on the behavior of users of information systems will result in optimal intention to use by the user. Hence the need for in-depth measurement of academic information system that has been running against the attitude of academic information system users to improve the behavior of users of information systems is the goal of this study. Exploratory research methods using the number of respondents as many as 124 students. Data were analyzed using Structural Equation Modelling (SEM, component based Partial Least Squares (PLS. The results showed that the influence of academic information system on the attitudes of users by 0.57 or 57% and influence the attitude of academic information system users to conduct on the intention to use of academic information systems at 0.50 or 50%.

Scanning gate microscopy of quantum rings: effects of an external magnetic field and of charged defects.

Science.gov (United States)

Pala, M G; Baltazar, S; Martins, F; Hackens, B; Sellier, H; Ouisse, T; Bayot, V; Huant, S

2009-07-01

We study scanning gate microscopy (SGM) in open quantum rings obtained from buried semiconductor InGaAs/InAlAs heterostructures. By performing a theoretical analysis based on the Keldysh-Green function approach we interpret the radial fringes observed in experiments as the effect of randomly distributed charged defects. We associate SGM conductance images with the local density of states (LDOS) of the system. We show that such an association cannot be made with the current density distribution. By varying an external magnetic field we are able to reproduce recursive quasi-classical orbits in LDOS and conductance images, which bear the same periodicity as the Aharonov-Bohm effect.

Field Effect Optoelectronic Modulation of Quantum-Confined Carriers in Black Phosphorus.

Science.gov (United States)

Whitney, William S; Sherrott, Michelle C; Jariwala, Deep; Lin, Wei-Hsiang; Bechtel, Hans A; Rossman, George R; Atwater, Harry A

2017-01-11

We report measurements of the infrared optical response of thin black phosphorus under field-effect modulation. We interpret the observed spectral changes as a combination of an ambipolar Burstein-Moss (BM) shift of the absorption edge due to band-filling under gate control, and a quantum confined Franz-Keldysh (QCFK) effect, phenomena that have been proposed theoretically to occur for black phosphorus under an applied electric field. Distinct optical responses are observed depending on the flake thickness and starting carrier concentration. Transmission extinction modulation amplitudes of more than two percent are observed, suggesting the potential for use of black phosphorus as an active material in mid-infrared optoelectronic modulator applications.

Analysis of different tunneling mechanisms of InxGa1−xAs/AlGaAs tunnel junction light-emitting transistors

International Nuclear Information System (INIS)

Wu, Cheng-Han; Wu, Chao-Hsin

2014-01-01

The electrical and optical characteristics of tunnel junction light-emitting transistors (TJLETs) with different indium mole fractions (x = 5% and 2.5%) of the In x Ga 1−x As base-collector tunnel junctions have been investigated. Two electron tunneling mechanisms (photon-assisted or direct tunneling) provide additional currents to electrical output and resupply holes back to the base region, resulting in the upward slope of I-V curves and enhanced optical output under forward-active operation. The larger direct tunneling probability and stronger Franz-Keldysh absorption for 5% TJLET lead to higher collector current slope and less optical intensity enhancement when base-collector junction is under reverse-biased.

Analytic expression for the giant fieldlike spin torque in spin-filter magnetic tunnel junctions

Science.gov (United States)

Tang, Y.-H.; Huang, Z.-W.; Huang, B.-H.

2017-08-01

We propose analytic expressions for fieldlike, T⊥, and spin-transfer, T∥, spin torque components in the spin-filter-based magnetic tunnel junction (SFMTJ), by using the single-band tight-binding model with the nonequilibrium Keldysh formalism. In consideration of multireflection processes between noncollinear magnetization of the spin-filter (SF) barrier and the ferromagnetic (FM) electrode, the central spin-selective SF barrier plays an active role in the striking discovery T⊥≫T∥ , which can be further identified by the unusual barrier thickness dependence of giant T⊥. Our general expressions reveal the sinusoidal angular dependence of both spin torque components, even in the presence of the SF barrier.

Dynamical critical phenomena in driven-dissipative systems.

Science.gov (United States)

Sieberer, L M; Huber, S D; Altman, E; Diehl, S

2013-05-10

We explore the nature of the Bose condensation transition in driven open quantum systems, such as exciton-polariton condensates. Using a functional renormalization group approach formulated in the Keldysh framework, we characterize the dynamical critical behavior that governs decoherence and an effective thermalization of the low frequency dynamics. We identify a critical exponent special to the driven system, showing that it defines a new dynamical universality class. Hence critical points in driven systems lie beyond the standard classification of equilibrium dynamical phase transitions. We show how the new critical exponent can be probed in experiments with driven cold atomic systems and exciton-polariton condensates.

Variationally stable treatment of two- and three-photon detachment of H- including electron-correlation effects

International Nuclear Information System (INIS)

Liu, C.; Gao, B.; Starace, A.F.

1992-01-01

A variationally stable, adiabatic hyperspherical treatment of two- and three-photon detachment of H - is presented. Results are compared with analytic predictions of a zero-range potential model of H - . Detailed comparisions are made also with other theoretical results which include the effects of electron correlations. We predict analytically (and demonstrate numerically) an extreme sensitivity of the theoretical predictions to any errors in the value of the electron affinity employed. In an Appendix we show that the low-intensity limit of the Keldysh treatment [Sov. Phys. JETP 20, 1307 (1965)] of detachment of an electron bound in a zero-range potential agrees with the results of a perturbative treatment

Novel spectral features of nanoelectromechanical systems

KAUST Repository

Tahir, M.

2014-02-17

Electron transport through a quantum dot or single molecule coupled to a quantum oscillator is studied by the Keldysh nonequilibrium Green\\'s function formalism to obtain insight into the quantum dynamics of the electronic and oscillator degrees of freedom. We tune the electronic level of the quantum dot by a gate voltage, where the leads are kept at zero temperature. Due to the nonequilibrium distribution of the electrons in the quantum dot, the spectral function becomes a function of the gate voltage. Novel spectral features are identified for the ground and excited states of nanomechanical oscillators that can be used to enhance the measurement sensitivity.

Fitur Seleksi Forward Selection Untuk Menetukan Atribut Yang Berpengaruh Pada Klasifikasi Kelulusan Mahasiswa Fakultas Ilmu Komputer UNAKI Semarang Menggunakan Algoritma Naive Bayes

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Mohamad Fajarianditya Nugroho

2017-09-01

Full Text Available Data mining dalam dunia pendidikan dikenal dengan Educational Data Mining. EDM mengembangkan metode untuk menggali data pendidikan dan menggunakan metode tersebut untuk lebih memahami siswa. EDM dapat membantu pendidik untuk menganalisis cara belajar, mendeteksi mahasiswa yang memerlukan dukungan dan memprediksi kinerja mahasiswa. Perguruan tinggi perlu melakukan prediksi perilaku mahasiswa dan peringatan dini untuk mencegah secara dini kegagalan akademik mahasiswa. Naive Bayes memanfaatkan fungsi seleksi fitur dari Forward Selection untuk pemilihan atribut data dengan karakteristik data itu sendiri, dan meningkatkan ketepatan klasifikasi Naïve Bayes. Forward Selection berbasis Naive Bayes lebih akurat dan efektif dalam mengklasifikasikan status kelulusan mahasiswa dengan hasil akurasi 97,14% dan termasuk dalam kategori “excellent classification” dan memperoleh atribut yang berpengaruh yaitu: status pekerjaan dan IPK semester 4

PENGELOLAAN SUPERVISI AKADEMIK KEPALA SEKOLAH DI SEKOLAH DASAR NEGERI KOTA SEMARANG

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Ngatini Ngatini

2015-12-01

Full Text Available This study aimed to know the management of school academic supervision activity that conducted by principal in the state primary school Pongangan, Gunungpati, Semarang area that included the planning, implementation, and the follow-up to increacse teachers’ performace. This research was conducted with qualitative descriptive method. The collecting data used interview, observation, and documentation. Research results revealed that (1 the planning of academic supervision by the principal at SDN Pongangan rated very good. (2 the implementation of academic supervision in SDN Pongangan a great fit the program, the schedule, the instruments that used according to the design, aspects that disupervisi votes had been lead on target academic supervision adapted to the needs of teachers and schools, the approach was with the program, academic supervision techniques used varied enough, the academic supervision of implementation constraints by the head of the school is the limited time; (3 the principal efforts made in the follow-up assessed academic supervision has been very good and hard-wired. Activities performed were: a the beginning of each semester were held in groups/joint supervision of teachers meeting school/KKG school; b performs the inverse to the teacher in order to reflect ourselves; c implementing guidance on drafting/administration/creation of learning; d emphasize on teachers that always paid attention to the discipline of work in carrying out the task of teaching as a teacher; e provided guidance for teachers on how to teach in interesting and fun way; f conducted coaching and guidance for teachers in the use of learning media, techniques/methods of teaching; g provide a learning device formats that are new to the teacher, and taught how to fill them; g For School Superintendent gave a complete written report in the end of years.

STRATEGI PEMBELAJARAN, KEMAMPUAN AKADEMIK, KEMAMPUAN PEMECAHAN MASALAH, DAN HASIL BELAJAR BIOLOGI

OpenAIRE

I Wayan Karmana

2012-01-01

Abstract: The Learning Strategy, Academic Capability, Problem Solving Skills, and Cognitive Achievement In Biology. This study investigates the effects of learning strategy, academic capability, and their interaction on problem solving skills, critical thinking, metacognitive awareness, and cognitive achievement in biology. This is a quasi experimental study using pretest-posttest non-equivalent control group design. The sample includes 60 tenth grade students of Senior High School 4 Mataram....

DUKUNGAN INFORMASIONAL ORANG TUA: PENENTU KEBERHASILAN PRESTASI AKADEMIK ANAK DI PERDESAAN

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Adelia Ratih Indrawati

2017-02-01

Full Text Available Academic achievement can be influenced by internal and external factors. External factors are including family, friend, and school environment that interact with children. This study aimed to analyze the social support received by children from the environment and also to analyze the role of the mother-child attachment to the academic achievement of elementary school children in rural areas. Participants were 100 primary school-age children who live in intact families in rural areas from the two selected primary schools in the study sites. The sampling technique was using proportional random sampling; based on the number and sex of the students in each selected schools. The study found that the better informational support of the parents, the better academic achievement of children. It is also found that the better mother-child attachment, the better academic achievement of primary school-age children in rural areas. However, regression test of the hyphothesis model, this study showed that only the informational support of the parent is the most significant determinant factor on the academic achievement of children in rural areas than the other variables.

PENGARUH FAKTOR-FAKTOR FRAUD DIAMOND DAN GONE THEORY TERHADAP KECURANGAN AKADEMIK

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Anisatul Munirah

2018-03-01

Full Text Available This research aims to determine whether there is a simultaneous and partial influence between the pressure, opportunity, rationalization, capability, greed, need and exposure of academic fraud on students competency accounting expertise SMK Negeri 1 Kendal. Population in this research are students of accounting expertise skill SMK Negeri 1 Kendal a number of 319 students. Sampling technique in this research is saturated sample. Data collection methods using questionnaires and documentation. The method of analysis used is descriptive analysis and multiple linear regression analysis. The results showed that there was a positive and significant influence simultaneously to academik farud of 59.4%, there is a positive and significant influence pressure on academic fraud by 2.4%, there is a positive and significant influence opportunity on academic fraud by 1.46%, there is a positif and significant influence rationalization on academik fraud by 1.54%, there is a positie and significant influence capability on academic fraud by 4.28%, there is a positive and significant influence greed on academic fraud by 2.96%, there is a positive and significant influence need on academic fraud by 1.59%, and there is a negative and siignificant exposure on academic fraud by -11,8%. The conclusion in this research is that pressure, opportunity, rationalization, capability, greed, need and exposure have positive and significant influence to academik fraud. Suggestions for futher researchers are expected to use analytical tools other than SPSS.

Keterlibatan Siswa (Student Engagement sebagai Mediator Kompetensi Emosi dan Prestasi Akademik

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I Wayan Dharmayana

2014-02-01

Full Text Available There is a hypothesis that emotional competencies have indirect effects to the academic achievement through school engagement and a higher Academic success requires higher emotional competencies and school engagement. This study aimed to test the hypothesis. It utilized subjects consisting of 417 excellent students. Psychological scale (emotional competence scale, Advanced Progressive Matrices (APM intelligence test and documen-tations were used for collecting the data. A Structural equation modeling of AMOS 6.0 was applied to analyze the data. The important result of this study supported the hypothesis and affirmed that emotional competence indirectly affects the academic achievement through the school engagement. Based on the result of this research, it was suggested that the efforts and interventions have to include the aspects of emotional competence and school engagement as integral parts of educational program in the school. Keywords: emotional competence, student engagement, academic achievement

HUBUNGAN SELF-EFFICACY DAN PROKRASTINASI AKADEMIK MAHASISWA DALAM MENYELESAIKAN TUGAS PERKULIAHAN

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Damri Damri

2017-05-01

Full Text Available The research is aimed at knowing the self-efficacy catogories and students academic procrastination and finding out the correlation of the two variables toward students’ their academic assignment accomplishment. Quantitative method is used in the research. Data was obtained through 231 respondents using self-efficacy and academic procrastination instruments. The data then is analyzed by SPSS for windows release 20.0. The findings show that students’ self-efficacy belongs to high category (71,90% while procrastination is in moderate category (52,30%. Analysis of Pearson Product Moment Correlation shows that there is negative correlation between self-efficacy and academic procrastination (rcount=-0.590 out of 0,000 significance level. It is implied that the more self-efficacy possessed by a students, the lower is the academic procrastination. Otherwise, the lower self-efficacy possessed by a students, th higher is the academic procrastination.

HUBUNGAN ANTARA RELIGIUSITAS DENGAN KECEMASAN AKADEMIK PADA SISWA MADRASAH ALIYAH NEGERI

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Fitri Ukhtia

2017-02-01

Full Text Available Students often experience anxiety at the moment are in academic situations. This study examined the  correlation  between  religiosity  and  academic  anxiety  in  students  MAN  in  one  of  the  cities  of Palembang. The independent variables in this study are religiosity, while the dependent variable is the  academic  anxiety.  The  hypothesis  put  forward  is  no  relationship  between  religiosity  and academic anxiety in students. The sampling technique in this study using a random cluster sampling technique which produces 319 students as respondents. Data collection methods used in this study a scale  of  religiosity  that  is  made  by  researchers  using  the  dimensions  of  religiosity  based  on  the opinions  Jamaluddin  Ancok  and  Fuad  Nashori  Suroso  consisting  of  five  dimensions.  Then  the anxiety scale made by the academic researchers used a Hamilton anxiety symptoms based on the opinion  that  consists  of  14  symptoms.  Data  analysis  methods  used  to  test  the  hypothesis  of  this research  is  simple  regression  analysis  that  generates  a  correlation  coefficient  of  p  =  0.000  (p <0.05, which showed a negative correlation between religiosity and academic anxiety in students. The results of the donations given to anxiety academic religiosity of 16.8% and the rest influenced by other factors not disclosed in this study.

Euclidean mirrors: enhanced vacuum decay from reflected instantons

Science.gov (United States)

Akal, Ibrahim; Moortgat-Pick, Gudrid

2018-05-01

We study the tunnelling of virtual matter–antimatter pairs from the quantum vacuum in the presence of a spatially uniform, time-dependent electric background composed of a strong, slow field superimposed with a weak, rapid field. After analytic continuation to Euclidean spacetime, we obtain from the instanton equations two critical points. While one of them is the closing point of the instanton path, the other serves as an Euclidean mirror which reflects and squeezes the instanton. It is this reflection and shrinking which is responsible for an enormous enhancement of the vacuum pair production rate. We discuss how important features of two different mechanisms can be analysed and understood via such a rotation in the complex plane. (a) Consistent with previous studies, we first discuss the standard assisted mechanism with a static strong field and certain weak fields with a distinct pole structure in order to show that the reflection takes place exactly at the poles. We also discuss the effect of possible sub-cycle structures. We extend this reflection picture then to weak fields which have no poles present and illustrate the effective reflections with explicit examples. An additional field strength dependence for the rate occurs in such cases. We analytically compute the characteristic threshold for the assisted mechanism given by the critical combined Keldysh parameter. We discuss significant differences between these two types of fields. For various backgrounds, we present the contributing instantons and perform analytical computations for the corresponding rates treating both fields nonperturbatively. (b) In addition, we also study the case with a nonstatic strong field which gives rise to the assisted dynamical mechanism. For different strong field profiles we investigate the impact on the critical combined Keldysh parameter. As an explicit example, we analytically compute the rate by employing the exact reflection points. The validity of the predictions

Theory of pump–probe ultrafast photoemission and X-ray absorption spectra

Energy Technology Data Exchange (ETDEWEB)

Fujikawa, Takashi, E-mail: tfujikawa@faculty.chiba-u.jp; Niki, Kaori

2016-01-15

Highlights: • Pump–probe ultrafast XAFS and XPS spectra are theoretically studied. • Keldysh Green's function theory is applied. • Important many-body effects are explicitly included. - Abstract: Keldysh Green's function approach is extensively used in order to derive practical formulas to analyze pump–probe ultrafast photoemission and X-ray absorption spectra. Here the pump pulse is strong enough whereas the probe X-ray pulse can be treated by use of a perturbation theory. We expand full Green's function in terms of renormalized Green's function without the interaction between electrons and probe pulse. The present theoretical formulas allow us to handle the intrinsic and extrinsic losses, and furthermore resonant effects in X-ray Absorption Fine Structures (XAFS). To understand the radiation field screening in XPS spectra, we have to use more sophisticated theoretical approach. In the ultrafast XPS and XAFS analyses the intrinsic and extrinsic loss effects can interfere as well. In the XAFS studies careful analyses are necessary to handle extrinsic losses in terms of damped photoelectron propagation. The nonequilibrium dynamics after the pump pulse irradiation is well described by use of the time-dependent Dyson orbitals. Well above the edge threshold, ultrafast photoelectron diffraction and extended X-ray absorption fine structure (EXAFS) provide us with transient structural change after the laser pump excitations. In addition to these slow processes, the rapid oscillation in time plays an important role related to pump electronic excitations. Near threshold detailed information could be obtained for the combined electronic and structural dynamics. In particular high-energy photoemission and EXAFS are not so influenced by the details of excited states by pump pulse. Random-Phase Approximation (RPA)-boson approach is introduced to derive some practical formulas for time-dependent intrinsic amplitudes.

Burning Plastics Investigated in Space for Unique US/Russian Cooperative Project

Science.gov (United States)

Friedman, Robert

2000-01-01

It is well known that fires in the low-gravity environment of Earth-orbiting spacecraft are different from fires on Earth. The flames lack the familiar upward plume, which is the result of gravitational buoyancy. These flames, however, are strongly influenced by minor airflow currents. A recent study conducted in low gravity (microgravity) on the Russian orbital station Mir used burning plastic rods mounted in a small chamber with a controllable fan to expose the flame to airflows of different velocities. In this unique project, a Russian scientific agency, the Keldysh Research Center, furnished the apparatus and directed the Mir tests, while the NASA Glenn Research Center at Lewis Field provided the test materials and the project management. Reference testing and calibrations in ground laboratories were conducted jointly by researchers at Keldysh and at the NASA Johnson Space Center's White Sands Test Facility. Multiple samples of three different plastics were burned in the tests: Delrin, a common material for valve bodies; PMMA, a plastic "glass"; and polyethylene, a familiar material for containers and films. Each burned with a unique spherical or egg-shaped flame that spread over the rod. The effect of varying the airflow was dramatic. At the highest airflow attainable in the combustion chamber, nearly 10 cm/sec (a typical ventilation breeze), the flames were bright and strong. As airflow velocity decreased, the flames became shorter but wider. In addition, the flames became less bright, and for PMMA and polyethylene, they showed two colors, a bright part decreasing in volume and a nearly invisible remainder (see the photographs). Finally, at a very low velocity, the flames extinguished. For the plastics tested, this minimum velocity was very low, around 0.3 to 0.5 cm/sec. This finding confirms that at least a slight airflow is required to maintain a flame in microgravity for these types of materials.

Arctic summer school onboard an icebreaker

Science.gov (United States)

Alexeev, Vladimir A.; Repina, Irina A.

2014-05-01

The International Arctic Research Center (IARC) of the University of Alaska Fairbanks conducted a summer school for PhD students, post-docs and early career scientists in August-September 2013, jointly with an arctic expedition as a part of NABOS project (Nansen and Amundsen Basin Observational System) onboard the Russian research vessel "Akademik Fedorov". Both the summer school and NABOS expedition were funded by the National Science Foundation. The one-month long summer school brought together graduate students and young scientists with specialists in arctic oceanography and climate to convey to a new generation of scientists the opportunities and challenges of arctic climate observations and modeling. Young scientists gained hands-on experience during the field campaign and learned about key issues in arctic climate from observational, diagnostic, and modeling perspectives. The summer school consisted of background lectures, participation in fieldwork and mini-projects. The mini-projects were performed in collaboration with summer school instructors and members of the expedition. Key topics covered in the lectures included: - arctic climate: key characteristics and processes; - physical processes in the Arctic Ocean; - sea ice and the Arctic Ocean; - trace gases, aerosols, and chemistry: importance for climate changes; - feedbacks in the arctic system (e.g., surface albedo, clouds, water vapor, circulation); - arctic climate variations: past, ongoing, and projected; - global climate models: an overview. An outreach specialist from the Miami Science Museum was writing a blog from the icebreaker with some very impressive statistics (results as of January 1, 2014): Total number of blog posts: 176 Blog posts written/contributed by scientists: 42 Blog views: 22,684 Comments: 1,215 Number of countries who viewed the blog: 89 (on 6 continents) The 33-day long NABOS expedition started on August 22, 2013 from Kirkenes, Norway. The vessel ("Akademik Fedorov") returned to

PENGUASAAN PERBENDAHARAAN BAHASA MELAYU STANDARD DALAM KALANGAN PELAJAR MELAYU DI SEKOLAH PONDOK DI PATANI, THAILAND

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Phaosan Jehwae

2016-10-01

Full Text Available AbstrakPenguasaan Perbendaharaan kata Bahasa Melayu Standard sangat penting. Bahasa Melayu berdistribusi luas di wilayah Selatan Thai dan digunakan sebagai bahasa formal, iaitu untuk pengajaran formal berbagai-bagai pengetahuan agama Islam. Setelah kerajaan Thai mewajibkan seluruh sekolah pondok menggunakan bahasa Thai dalam pembelajaran bidang akademik, kerajaan Thai mulai memberi gaji kepada guru yang mengajar mata pelajaran sekular yang bersifat akademik. Kedudukan bahasa Melayu sebagai bahasa ilmu telah terjejas kecuali dalam bidang agama. Masa persekolahan,  pelajar Melayu di Patani terlalu banyak menggunakan bahasa Thai dibandingkan dengan bahasa Melayu. Pemahaman berkait dengan latar belakang pendidikan pelajar-pelajar Melayu di Patani adalah amat penting, iaitu bagi memahami tahap pendedahan dan penggunaan Bahasa Melayu Standard (BMS dalam kalangan pelajar Melayu. Bahawa pelajar Melayu di sekolah pondok di Patani amat lemah menguasai perbendaharaan kata dalam BMS. Kelemahan menguasai perbendaharaan kata dalam BMS sudah pasti berimpak negatif kepada penggunaan BMS pada merit yang baik atau memuaskan. Kata Kunci: Perbendaharaan bahasa Melayu standard, Pelajar Melayu, Sekolah pondok, PataniAbstractThe understanding vocabularies and structures of standard Malay Language is very important. Malay language contributed widely in the northern part of Thai and it is practiced by people formally.  That is to teach about various knowledge of Islam. After Thai kingdom required all religious schools to use Thai language in all subjects. Thai government also starts to pay salary to every teacher who teaches secular subjects. Except religious subjects, Malay language has decreased. Thai language is practiced in schools rather than Malay language. The understanding about the background of students of Patani is very important because it is related to their knowledge to use Standard Malay language.  Their understanding in Standard Malay Language is very

Structural peculiarities of the sedimentary cover of the MAR crest depressions (5°-8°N) in the Equatorial Atlantics

Science.gov (United States)

Skolotnev, S. G.; Tsukanov, N. V.; Turko, N. N.; Peyve, A. A.

2003-04-01

The analysis of the bottom relief structure investigated with multibeam SIMRAD 12S and sedimentary cover of depressions investigeted with PARASAUND in the MAR crest zone near Sierra-Leone Fault (22 Cruise of the RV "Akademik Nikolay Strachov", and 10 Cruise of the RV "Akademik Ioffe") point on the complicated character of the tectonic activity distribution in this region. The left-lateral displacements of the rift velley and the absence of transform faults are typical for this region. Two extremely deep rift depressions (up to 5000 m) are located in the rift valley: one on 5°54'N latitude (Markov depression) and the other on 5°46'N latitude. About 40 m sediments cover their bottom. On contary, in the depression located parallel to the rift valley directly to the west from the two mentioned rift depressions the sedimentary cover is absent and bottom has very dissected, apparently volcanic, relief. In the MAR crest zone in 20 miles to the south-west from the Markov and 5°46'N depressions one can see a system of depressions oriented both parallel and oblique to the rift valley. There are filled by the sediments of different thickness. The sedimentary cover of these depressions often is tired and deformed by diapir and horst uplifts. Dredging data show, that basalts, which represent, according to their petro-geo-chemical characteristics the enriched MORB basalts and alkaline basalts compose these uplifts. Irregular distribution and character of composition of the sediments in the depressions of crest zone of the MAR segment under consideration along with high volcanic activity outside the axial spreding zone show that tectonic and volcanic activity in this area are distributed all over the crest zone. The complicated character of this activity is obviosly caused by two reasons. From one hand it may be a deep mantle plum, as inferred from basalt composition and from the other hand it may be the lithosphere blocks displacements along the left-lateral strike slips.

Nonequilibrium response of an electron-mediated charge density wave ordered material to a large dc electric field

Science.gov (United States)

Matveev, O. P.; Shvaika, A. M.; Devereaux, T. P.; Freericks, J. K.

2016-01-01

Using the Kadanoff-Baym-Keldysh formalism, we employ nonequilibrium dynamical mean-field theory to exactly solve for the nonlinear response of an electron-mediated charge-density-wave-ordered material. We examine both the dc current and the order parameter of the conduction electrons as the ordered system is driven by the electric field. Although the formalism we develop applies to all models, for concreteness, we examine the charge-density-wave phase of the Falicov-Kimball model, which displays a number of anomalous behaviors including the appearance of subgap density of states as the temperature increases. These subgap states should have a significant impact on transport properties, particularly the nonlinear response of the system to a large dc electric field.

Summation of divergent series and Zel'dovich's regularization method

International Nuclear Information System (INIS)

Mur, V.D.; Pozdnyakov, S.G.; Popruzhenko, S.V.; Popov, V.S.

2005-01-01

The method of summation of divergent series, including series of a perturbation theory, which is an analog of the Zel'dovich regularization procedure in the theory of quasistationary states is considered. It is shown that this method is more powerful than the well-known Abel and Borel methods, but compatible with them (i. e., gives the same value for the sum of the series). The restrictions to the range of parameters which appear after removal of the regularization of integrals by this method are discussed. The dynamical Stark shifts and widths of weakly bound s states in a field of circularly polarized electromagnetic wave are calculated at different values of the Keldysh adiabaticity parameter and multiquantum parameter [ru

He Lived among us

Science.gov (United States)

Pokrovsky, V. L.

2013-06-01

I initially got acquainted with Anatoly Larkin at the first Odessa theoretical school, probably in 1959. Amid the brilliant company gathered in Odessa (Abrikosov, Khalatnikov, Gorkov, Keldysh, Perel, Pitaevsky), he astonished me at the time with his fundamentality, the soundness of his judgment and the ease of his receptiveness to new ideas. Later in Novosibirsk, where I lived then, Roald Sagdeev told me A. B. Migdal, Tolya's research supervisor for graduate work, had invited Tolya to move with him to Novosibirsk, to the Budker Institute of Nuclear Physics, with the promise of a fast-track academic career. Tolya refused, and then A.B., who held Tolya's opinion and collaboration in high regard, also decided to stay in Moscow...

Functional renormalization group study of the Anderson–Holstein model

International Nuclear Information System (INIS)

Laakso, M A; Kennes, D M; Jakobs, S G; Meden, V

2014-01-01

We present a comprehensive study of the spectral and transport properties in the Anderson–Holstein model both in and out of equilibrium using the functional renormalization group (fRG). We show how the previously established machinery of Matsubara and Keldysh fRG can be extended to include the local phonon mode. Based on the analysis of spectral properties in equilibrium we identify different regimes depending on the strength of the electron–phonon interaction and the frequency of the phonon mode. We supplement these considerations with analytical results from the Kondo model. We also calculate the nonlinear differential conductance through the Anderson–Holstein quantum dot and find clear signatures of the presence of the phonon mode. (paper)

Single-pulse and multi-pulse femtosecond laser damage of optical single films

International Nuclear Information System (INIS)

Yuan Lei; Zhao Yuan'an; He Hongbo; Shao Jianda; Fan Zhengxiu

2006-01-01

Laser-induced damage of a single 500 nm HfO 2 film and a single 500 nm ZrO 2 film were studied with single- and multi-pulse femtosecond laser. The laser-induced damage thresholds (LIDT) of both samples by the 1-on-1 method and the 1000-on-1 method were reported. It was discovered that the LIDT of the HfO 2 single film was higher than that of the ZrO 2 single film by both test methods, which was explained by simple Keldysh's multiphoton ionization theory. The LIDT of multi-pulse was lower than that of single-pulse for both samples as a result of accumulative effect. (authors)

Rezension zu: Yvonne Haffner, Beate Krais: Arbeit als Lebensform? Frankfurt am Main u.a.: Campus Verlag 2008

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Daniela Heitzmann

2009-07-01

Full Text Available Nachdem der Mythos des unerbittlich arbeitenden Wissenschaftlers, der sich mit Haut und Haar ‚seiner‘ Forschung verschrieben hat, langsam zu bröckeln beginnt, stellt sich aus der Genderperspektive die Frage nach der Bedeutung der Arbeitskultur für die fortbestehende Unterrepräsentanz von Frauen in der Wissenschaft, besonders in leitenden Positionen. Gleichzeitig trägt die allmähliche ‚Entdeckung‘ des Privaten für Männer, die nun auch Väter und Lebenspartner sein sollen (können, zur Entmythologisierung bei. Der vorliegende Sammelband widmet sich dem Balance-Akt zwischen Arbeits- und Privatleben, den Frauen und Männer zu leisten haben. Auf Grundlage zahlreicher empirischer Untersuchungen wird ein umfassendes und erkenntnisreiches Panorama über die Verquickungen individueller und struktureller Anforderungen an berufstätige Akademikerinnen und Akademiker vorgelegt.

HUBUNGAN SELF EFFICACY DAN POLA ASUH OTORITER DENGAN PROKRASTINASI AKADEMIK PADA MAHASISWA

OpenAIRE

Rohmatun Rohmatun; Taufik Taufik

2015-01-01

This research is aimed at investigating the correlation between selfefficacy and authoritarian parenting style toward student s’ academic procrastination. The subject of this research is 150 students of faculty of of Psychology, Medicine, and Economy of Sultan Agung Islamic University who are working on the final project. The major  hypothesis proposed in the research is that there is a correlation between self-efficacy and authoritarian parenting style with students’ academic procrastination...

HUBUNGAN SELF EFFICACY DAN POLA ASUH OTORITER DENGAN PROKRASTINASI AKADEMIK PADA MAHASISWA

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Rohmatun Rohmatun

2015-07-01

Full Text Available This research is aimed at investigating the correlation between selfefficacy and authoritarian parenting style toward student s’ academic procrastination. The subject of this research is 150 students of faculty of of Psychology, Medicine, and Economy of Sultan Agung Islamic University who are working on the final project. The major  hypothesis proposed in the research is that there is a correlation between self-efficacy and authoritarian parenting style with students’ academic procrastination. The minor hypotheses are as follows: (1 there is a negative correlation between self-efficacy with academic procrastination; and (2 there is a positive correlation between authoritarian parenting style with academic procrastination. This research used three of scale for the data collection namely academic procrastination scale, self-efficacy scale and authoritarian parenting stale scale. The statistic analysis used in the research is regression to test major hypothesis and the parsial analysis to test minor hypothesis. The research results show that (1 there is correlation between self-efficacy and authoritarian pareting style with students’ academic procrastination; (2 there is a significant negative correla tion between self-efficacy with academic procrastination toward college students; and (3 there is a significant positive correlation between authoritarian parenting style with academic procrastination toward college sudents.

Pemodelan Aplikasi Enterprise Resource Planning Untuk Pondok Pesantren (Pemodelan Aplikasi Proses Akademik

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M. Ainul Yaqin

2016-05-01

Full Text Available Abstract— Pesantren is an institution or organization that is engaged in Islamic religious education-based community education diniyah or integrated with other types of education. As a boarding school organization requires good management information systems by implementing an integrated boarding school. The information system is an Enterprise Resource Planning (ERP system that covers all business processes in a boarding school and focused on planning and documentation of transactions. ERP is the application used by the manufacturing company in operation. There is therefore a fundamental conceptual differences between the manufacturing process with the process of education at boarding school, so as to generate the appropriate ERP and can be used by the boarding school, the system needs to be modeled. Modelling done by creating a process diagram and diagram data.

Psychological Contract Sebagai Alternatif dalam Meninjau Pemenuhan Harapan Akademik di Perguruan Tinggi

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rezki ashriyana sulistiobudi

2017-07-01

Full Text Available Abstract Higher education, as an institution that generates the nation's next future leader, is no longer burdened with merely providing knowledge alone. Human resource competitiveness was being one of higher education responsibility to complete, to achieve a great quality of their graduates. Hope that emerged from the students on the fulfillment of obligations towards their university becomes something that can not be separated from the quality of the graduates. Psychological contract as a concept that can explain it, has not been widely studied in a higher education setting especially in Indonesia. The number of measuring instruments has its version on some theoretical models raises curiosity as to what is actually appropriate. Through the method of literature review, it was carried out a critical discussion of the components in the measurement of psychological contract at higher education institutions. The exposure in understanding the dynamics of inter-dimensional and determine the appropriate model based on the characteristics of each academic institution. At least, measurement of psychological contract used in higher education setting should be both of promissory (transactional and non-promissory (relational dimension. Surely, it always needs to adjust to the conditions and situations relevantly in each institution. Therefore, it would be possible to bring various indicators in each of dimension.

EVALUASI SISTEM INSENTIF UNTUK MENINGKATKAN PERFORMANSI KERJA (STUDI KASUS : PEGAWAI NON AKADEMIK

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Atya Nur Aisha

2014-06-01

Full Text Available Employee is one of the main assets that support the success of an organization, so their performance will affect performance of the organization as a whole. This study aims to evaluate the application and determine the effect of incentive systems and other factors on job performance. Methods of data collection in this study consists of literature review, interviews and collecting questionnaires. A total of 103 questionnaires distributed to nonacademic employees at an educational institution. Data processing in this study, among others, evaluation of incentives satisfaction, correlation test using Pearson and Partial Least Squares (PLS to predict the relationship between the variables. The results showed that salaries are the most important priority to be obtained at work. Relationships between variables in terms of a significant correlation between the variable conditions of employment, the willingness achievers, and incentives for job performance variables. In the design of the proposed incentives, provision of incentives aimed at increasing productivity and work motivation, maintaining equality and feasibility at incentives, and maintaining the welfare of employees. In addition, the design of proposed incentives gives adjustment to the amount of family allowance, responsibility allowance, general allowance, as well as performance benefits.

EVALUASI SISTEM INSENTIF UNTUK MENINGKATKAN PERFORMANSI KERJA (STUDI KASUS: PEGAWAI NON AKADEMIK

Directory of Open Access Journals (Sweden)

Atya Nur Aisha

2014-06-01

Full Text Available Employee is one of the main assets that support the success of an organization, so their performance will affect performance of the organization as a whole. This study aims to evaluate the application and determine the effect of incentive systems and other factors on job performance. Methods of data collection in this study consists of literature review, interviews and collecting questionnaires. A total of 103 questionnaires distributed to nonacademic employees at an educational institution. Data processing in this study, among others, evaluation of incentives satisfaction, correlation test using Pearson and Partial Least Squares (PLS to predict the relationship between the variables. The results showed that salaries are the most important priority to be obtained at work. Relationships between variables in terms of a significant correlation between the variable conditions of employment, the willingness achievers, and incentives for job performance variables. In the design of the proposed incentives, provision of incentives aimed at increasing productivity and work motivation, maintaining equality and feasibility at incentives, and maintaining the welfare of employees. In addition, the design of proposed incentives gives adjustment to the amount of family allowance, responsibility allowance, general allowance, as well as performance benefits.

PENGASUHAN OTORITER BERPOTENSI MENURUNKAN KECERDASAN SOSIAL, SELF ESTEEM, DAN PRESTASI AKADEMIK REMAJA

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Alfiasari Alfiasari

2011-01-01

Full Text Available  Analysis of relation between parenting style perception and academic achievement, social intelligence, and self-esteem become the main issue of the research. This research involved 107 respondents of college students that consist of 55 male and 52 female of 1st grade. Respondents were chosen by proportional random sampling. Authoritative, authority, and permissive choosen as parenting style. Female students had significant correlation with authoritative perception scores. Meanwhile, family income had significant and positive correlation with permissive perception scores. Result showed that higher scores of authoritative that perceived by adolescents then higher scores of social intelligence and self-esteem. In the other hand, higher score of authoritarian that perceived by adolescents then lower scores of sosial intelligence, self-esteem, and academic achievement. Permissive parenting style had positive and significant correlation with academic achievement. Sosial intelligence had positive and significant correlation with self-esteem, meanwhile social intelligence and self-esteem did not had significant correlation with academic achievement. 

PENGASUHAN OTORITER BERPOTENSI MENURUNKAN KECERDASAN SOSIAL, SELF ESTEEM, DAN PRESTASI AKADEMIK REMAJA

OpenAIRE

Alfiasari Alfiasari; Melly Latifah; Astuti Wulandari

2011-01-01

 Analysis of relation between parenting style perception and academic achievement, social intelligence, and self-esteem become the main issue of the research. This research involved 107 respondents of college students that consist of 55 male and 52 female of 1st grade. Respondents were chosen by proportional random sampling. Authoritative, authority, and permissive choosen as parenting style. Female students had significant correlation with authoritative perception scores. Meanwhile, family i...

MOTIVASI BERWIRAUSAHA, MANAJEMEN WAKTU, MANAJEMEN KEUANGAN, DAN PRESTASI AKADEMIK PADA MAHASISWA WIRAUSAHA

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Ulfi Urfillah

2017-07-01

Full Text Available This study aimed to analyze the influence of sample characteristics, family characteristics, business characteristics, entrepreneurial motivation, time management, and financial management toward business growth and academic achievement of college entrepreneurs. The study involved 50 college students (32 male and 18 female who have been in business (agriculture or non-agricultural for at least three months. Samples chosen by snowball technique with the first key informant is the head of the entrepreneurial community. Data were collected through interviews and analyzed using independent sample t-test, factor analysis, and multiple linear regression. Research showed that category of entrepreneurial motivation was high. The most motivating factor for college entrepreneurs was a greater business achievement. Category of financial and time management of college entrepreneurs were in the medium. The largest percentage of business growth was between 0,0 to 20,0 percent per month. Female entrepreneurs have better academic achievement than male entrepreneurs. The study found that the business growth is significantly positively influenced by the education and occupation of the father. The academic achievement of college entrepreneurs is negatively influenced by the participation of the Entrepreneurship Student Creativity Program and business growth, but it is positively influenced significantly by college entrance pathways and financial management.

Peningkatan Layanan Sistem Informasi Akademik Berbasis Android ( Studi Kasus di Stta YOGYAKARTA)

OpenAIRE

Akbar Maulana Tirta; Sumarsono Sumarsono; Anton Setiawan Honggowibowo

2012-01-01

Academic information systems have a goal for facilitate students in to access there are information. But facilities which has given by college not yet maximum. With utilize smartphone based on android, students can be access there are Academic information systems. Client Server become solution method for implement Academic information systems to the smartphone.This Academic information systems use database PostgreesSQL, it which implanted in server and become smartphone android have been inst...

Implementasi Sistem Informasi Akademik Menggunakan Aplikasi Jibas pada SMA Negeri 9 Padang

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Ricky Akbar

2015-10-01

Full Text Available SMA Negeri 9 Padang is one of the institutions engaged in the field of education, which requires the design of software to manage and run all school activities, one of which is the Academic Information System (SIA. SIA currently in SMA 9 Padang yet well integrated, so it still has many shortcomings in meeting the needs of the school or institution, in particular to deal with academic problems. Therefore, it needs to be implemented Academic Information System that can overcome the various shortcomings earlier. Implementation of this application starts with a preliminary study. Activities, the introduction of the school as a whole with interviews and observations, identify business processes academically at school is running and then make the proposed system as terkomputerisasinya, which is described by using the tools of Business Process Model Notation (BPMN, as well as the depiction of a working model of the system to be applied using use case diagram. The next stage is to study the literature of various books and journals to find the theoretical basis and related research. Then selecting software for SIA School, after the configuration and customization of the software modules, and the latter carry out the implementation and testing. These results indicate that the software SIA Schools that have been selected and applied that JIBAS applications, which can solve the problems on SMA Negeri 9 Padang

KECERDASAN EMOSIONAL, KEMATANGAN SOSIAL, SELF-ESTEEM, DAN PRESTASI AKADEMIK MAHASISWA LULUSAN PESANTREN

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Melly Latifah

2011-01-01

Full Text Available  The purpose of this research was to analyze the difference of emotional intelligence, social maturity, self-esteem, and academic achievement on Islamic dan nonIslamic boarding graduate students; the correlation between research variables; and influence of graduate students and family’s characteristics, emotional intelligence, social maturity, and self-esteem toward academic achievement. This research involved 100 college students that were selected systematic randomly. Data were collected by interview and self report with questionnaire. The data were analyzed using descriptive, different test, correlation test, and regression test. The results showed that there were no significant differences between emotional intelligence, social maturity, self-esteem, and academic achievement between Islamic boarding and nonIslamic boarding graduate students. Emotional intelligence and social maturity had significant and positive correlation with self-esteem. Academic achievement of Islamic boarding graduate students was influenced by emotional intelligence and social maturity. While in the nonIslamic boarding graduate students, academic achievement was influenced by student activities.

”Er jeg akademiker nok?” – masseuniversitetets studenterkampe om legitim uddannelseskultur

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Karin Højbjerg

2015-03-01

Full Text Available Siden anden verdenskrig er antallet af studerende på videregående uddannelser øget dramatisk. Som noget nyt har også professionsbachelorer adgang til visse af univer¬si-teternes kandidatuddannelser. Dette gælder således for kandidatuddannelsen i Læring og Forandringsprocesser på Aalborg Universitet, hvor denne artikels empiri er genereret fra. Artiklen fremlægger resultaterne af en undersøgelse af, hvordan studerende med forskellige uddannelsesbaggrunde må kæmpe om at definere sig selv og medstuderende som akademikere. Artiklens hovedbegreber er taget fra Pierre Bourdieus praktikteori (Bourdieu, 1996; 1997. Det empiriske materiale består af interviews med otte studerende fra samme årgang på kandidatuddannelsen i Læring og Forandringsprocesser. Materialet er bearbejdet ud fra et Bourdieuinspireret, relationelt blik og er kondenseret ned til fremtrædende træk ved forskelligartede strategier. Artiklen viser eksempler på fire studiestrategier, der relaterer sig til, hvordan man som studerende forholder sig til det at arbejde ”akademisk”: En oprørsstrategi der går mod forestillingen om den dominerende universitetskultur ; en strategi der i udgangspunktet ønsker at inkludere og anerkende andre strategier, men med en oplevelse af at motivationen gradvist forsvinder ; en strategi hvor den studerende aktivt afviser og undgår samarbejde med studerende med bestemte uddannel¬ses¬baggrunde, og endelig en kulturelt opadgående strategi der gradvis er lykkedes med at aflæse den ”akademiske kode". The number of students entering higher education since the Second World War has grown dramatically. As a consequence, students from University Colleges are now given admittance to certain master programmes at the established universities. This article presents the results of a study of how students with different educational backgrounds struggle to define themselves and their fellow students as academics.  In this study we focus on students on the Master of Arts in Learning and Innovative Change at Aalborg University Copenhagen. The empirical material consists of eight interviews with same year students from the programme. Drawing on Pierre Bourdieu’s praxeology (1996, 1997, the material is coded from a relational perspective and condensed to significant traits of strategies. The data reveals four significant examples of strategies used by students in their endeavors to work ‘academically’. These strategies are as follows: A strategy of counter action towards the university culture; a receptive strategy; a rejecting strategy; and a culturally ascending strategy where the student gradually succeeds in cracking the ‘academic code’.

STM tunneling through a quantum wire with a side-attached impurity

International Nuclear Information System (INIS)

Kwapinski, T.; Krawiec, M.; Jalochowski, M.

2008-01-01

The STM tunneling through a quantum wire (QW) with a side-attached impurity (atom, island) is investigated using a tight-binding model and the non-equilibrium Keldysh Green function method. The impurity can be coupled to one or more QW atoms. The presence of the impurity strongly modifies the local density of states of the wire atoms, thus influences the STM tunneling through all the wire atoms. The transport properties of the impurity itself are also investigated mainly as a function of the wire length and the way it is coupled to the wire. It is shown that the properties of the impurity itself and the way it is coupled to the wire strongly influence the STM tunneling, the density of states and differential conductance

Fragmentation function in non-equilibrium QCD using closed-time path integral formalism

International Nuclear Information System (INIS)

Nayak, Gouranga C.

2009-01-01

In this paper we implement the Schwinger-Keldysh closed-time path integral formalism in non-equilibrium QCD in accordance to the definition of the Collins-Soper fragmentation function. We consider a high-p T parton in QCD medium at initial time τ 0 with an arbitrary non-equilibrium (non-isotropic) distribution function f(vector (p)) fragmenting to a hadron. We formulate the parton-to-hadron fragmentation function in non-equilibrium QCD in the light-cone quantization formalism. It may be possible to include final-state interactions with the medium via a modification of the Wilson lines in this definition of the non-equilibrium fragmentation function. This may be relevant to the study of hadron production from a quark-gluon plasma at RHIC and LHC. (orig.)

Summation of Divergent Series and Zeldovich's Regularization Method

International Nuclear Information System (INIS)

Mur, V.D.; Pozdnyakov, S.G.; Popruzhenko, S.V.; Popov, V.S.

2005-01-01

A method for summing divergent series, including perturbation-theory series, is considered. This method is an analog of Zeldovich's regularization method in the theory of quasistationary states. It is shown that the method in question is more powerful than the well-known Abel and Borel methods, but that it is compatible with them (that is, it leads to the same value for the sum of a series). The constraints on the parameter domain that arise upon the removal of the regularization of divergent integrals by this method are discussed. The dynamical Stark shifts and widths of loosely bound s states in the field of a circularly polarized electromagnetic wave are calculated at various values of the Keldysh adiabaticity parameter and the multiquantum parameter

Field enhancement of multiphoton induced luminescence processes in ZnO nanorods

Science.gov (United States)

Hyyti, Janne; Perestjuk, Marko; Mahler, Felix; Grunwald, Rüdiger; Güell, Frank; Gray, Ciarán; McGlynn, Enda; Steinmeyer, Günter

2018-03-01

The near-ultraviolet photoluminescence of ZnO nanorods induced by multiphoton absorption of unamplified Ti:sapphire pulses is investigated. Power dependence measurements have been conducted with an adaptation of the ultrashort pulse characterization method of interferometric frequency-resolved optical gating. These measurements enable the separation of second harmonic and photoluminescence bands due to their distinct coherence properties. A detailed analysis yields fractional power dependence exponents in the range of 3-4, indicating the presence of multiple nonlinear processes. The range in measured exponents is attributed to differences in local field enhancement, which is supported by independent photoluminescence and structural measurements. Simulations based on Keldysh theory suggest contributions by three- and four-photon absorption as well as avalanche ionization in agreement with experimental findings.

Analytical determination of Kondo and Fano resonances of electron Green's function in a single-level quantum dot

International Nuclear Information System (INIS)

Nguyen Bich Ha; Nguyen Van Hop

2009-01-01

The Kondo and Fano resonances in the two-point Green's function of the single-level quantum dot were found and investigated in many previous works by means of different numerical calculation methods. In this work we present the derivation of the analytical expressions of resonance terms in the expression of the two-point Green's function. For that purpose the system of Dyson equations for the two-point nonequilibrium Green's functions in the complex-time Keldysh formalism was established in the second order with respect to the tunneling coupling constants and the mean field approximation. This system of Dyson equations was solved exactly and the analytical expressions of the resonance terms are derived. The conditions for the existence of Kondo or Fano resonances are found.

Penerapan Data Mining Algoritma Naives Bayes dan PART Untuk Mengetahui Minat Baca Mahasiswa di Perpustakaan STMIK AMIKOM Purwokerto

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Mohammad Imron

2017-08-01

Full Text Available Perpustakaan STMIK AMIKOM Purwokerto didirikan dengan tujuan untuk membantu serta memenuhi kebutuhan sivitas akademik yang ada di Perguruan Tinggi, koleksi buku yang ada sekitar 12,518, dengan judul 6,375 eksemplar. Penelitian ini bertujuan untuk mengetahui minat baca mahasiswa dengan membandingkan tingkat akurasi pada data mining dengan menggunakan algoritma naive bayes dan PART berdasarkan data peminjaman. Pengambilan data dari bulan Januari 2016 sampai bulan Maret 2017 dengan total data 4022. Hasil pengujian yang telah dilakukan terhadap kedua algoritma yaitu algoritma Naive Bayes dan Algoritma PART, maka dapat disimpulkan dari evaluasi dengan confusion matrix didapat hasil nilai akurasi masing-masing algoritma, nilai akurasi dari algoritma naive bayes sebesar 97,01% dan nilai akurasi dari algoritma PART sebesar 97,19%, sehingga algoritma yang terbaik dari pengujian tersebut untuk mengetahui minat baca mahasiswa di Perpustakaan STMIK AMIKOM Purwokerto adalah algoritma PART.

Girişimciliğin Etik Boyutu

OpenAIRE

Doğan, Nilhun

2014-01-01

Son yıllarda yapılan girişimcilik ve etik arasındaki ilişkiye yönelik akademik araştırmalar oldukça yeni olmasına rağmen, konuya olan ilgi oldukça artmıştır. Sanayi toplumundan bilgi toplumuna geçiş ile birlikte giri- şimciliğin önemi artmıştır. Ancak, araştırmacılar tarafından girişimciliğin daha çok sosyo-ekonomik yönü üzerinde durulmuş ve girişimciliğin etiksel boyutuna daha az dikkat çekilmiştir. Bu bakımdan girişimciliğin etiksel boyutu çalışmada inceleme konusu yapılmıştır....

Süryaniler’in Tarihi ve Sosyolojik Yapısı

OpenAIRE

Ürek, Melki

2014-01-01

Bu makalede, Süryanilerin tarihi süreçleri ve sosyolojik yapıları ele alın-mıştır. Süryaniler yüzyıllar boyunca oldukça kaotik bir cooğrafyada yaşa-mışlarddır. Bu nedenle, dini, politik ve ideolojik açıdan pek çok farklı pa-radigmanın etkisi altında kalmışlardır. Bu olumsuz etki Süryanileri tarihi ve teolojik açıdan hatalı tanımlamalar ve yanlış isimlendirmeler gibi so-runlarla yüz yüze bırakmıştır. Ancak son zamanlarda üretilen akademik ve objektif çalışmalarla, Süryani liderlerin kendilerin...

Üstün Zekâlılar: Özellikleri, Tanılanmaları, Eğitimleri (KİTAP İNCELEMELERİ

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Şule Demirel

2013-06-01

Full Text Available “Üstün Zekâlılar: Özellikleri, Tanılanmaları, Eğitimleri” adlı yenilenmiş ikinci basım olan bu kitap; üstün zekâ tanımları ve tarihçesi, üstün zekâ kuramları, üstün zekâlıların özellikleri ve gelişimleri, tanılama, eğitim stratejileri, müfredat tasarımı ve müfredat modelleri, eğitim prog-ramı tasarımı, program değerlendirmesi, sosyal-duyuşsal-akademik konular ve rehberlik, üs-tün zekâlı öğrencilerin öğretmenleri olmak üzere on bölümden oluşmaktadır.

MASYARAKAT MADURA DAN RENCANA PEMBANGUNAN PLTN; PERSPEKTIF TEOLOGI

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Abd. A'la

2012-05-01

Full Text Available Abd A’la   (Staf pengajar pada program Pascasarjana IAIN Sunan Ampel dan Asiten Direktur Bidang Akademik pada lembaga yang sama       Abstrak : Setiap pemanfaatan energi selalu memiliki resiko environmental. Resiko dalam dunia ilmu dapat ditolelir jika hal itu telah terkalkulasikan sehingga merupakan caculable risk. Sementara untuk energi nuklir, sampai saat ini, belum dapat dilakukan terutama terkait dengan teknologi pengamannya sehingga Fitjof Capra menyebutnya sebagai rasionalitas yang tidak bertanggung jawab. Masyarakat Madura merupakan komunitas Sunny dan dalam merespon setiap perkembangan selalu berjangkar pada prinsip-prinsip Sunny yang dicirikan dengan kehati-hatian dan moderasi. Terkait dengan rencana PLTN madura, masalah data tentang kebutuhan hal itu harus segera diperoleh untuk menjawab perlu tidaknya PLTN di Madura. Kekhwatiran bahwa kebutuan itu hanya merupakan rekayasa perusahaan reaktor nuklir patut di pertimbangkan karena memang sangat beralasan Kata Kunci : masyarakat madura, nuklir, PLTN

Measurement of intensity-dependent rates of above-threshold ionization (ATI) of atomic hydrogen at 248 nm

International Nuclear Information System (INIS)

Nichols, T.D.

1991-04-01

Measured rates of multiphoton ionization (MPI) from the ground state of atomic hydrogen by a linearly polarized, subpicosecond KrF laser pulse at 248 nm wavelength are compared to predictions of lowest-order perturbation theory, Floquet theory, and Keldysh-Faisal-Reiss (KFR) theory with and without Coulomb correction for peak irradiance of 3 x 10 12 W/cm 2 to 2 x 10 14 W/cm 2 . The Coulomb-corrected Keldysh model falls closest to the measured rates, the others being much higher or much lower. At 5 x 10 13 W/cm 2 , the number of ATI electrons decreased by a factor of approximately 40 with each additional photon absorbed. ATI of the molecular hydrogen background and of atoms from photodissociation of the molecules were also observed. The experiment employed a crossed-beam technique at ultrahigh vacuum with an rf-discharge atomic hydrogen source and a magnetic-bottle type electron time-of-flight spectrometer to count the electrons in the different ATI channels separately. The apparatus was calibrated to allow comparison of absolute as well as relative ionization rates to the theoretical predictions. This calibration involved measuring the distribution of irradiance in a focal volume that moved randomly and changed its size from time to time. A data collection system under computer control divided the time-of-flight spectra into bins according to the energy of each laser pulse. This is the first measurement of absolute rates of ATI in atomic hydrogen, and the first measurement of absolute test of MPI in atomic hydrogen without a large factor to account for multiple modes in the laser field. As such, the results of this work are important to the development of ATI theories, which presently differ by orders of magnitude in their prediction of the ionization rates. They are also important to recent calculations of temperatures in laser-heated plasmas, many of which incorporate KFR theory

PENERAPAN K-OPTIMAL PADA ALGORITMA KNN UNTUK PREDIKSI KELULUSAN TEPAT WAKTU MAHASISWA PROGRAM STUDI ILMU KOMPUTER FMIPA UNLAM BERDASARKAN IP SAMPAI DENGAN SEMESTER 4

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Mutiara Ayu Banjarsari

2016-04-01

Full Text Available The data pile on a database of academic information systems at Computer Science Program of Mathematic and Natural Science Faculty of Lambung Mangkurat University is not fully utilized, although it can provide new information that has not been known before. Data mining techniques can be used to predict the timely graduation of students. The k-Nearest Nieghbor, a method to classify objects based on training data located closest to the object, was used in this study. Selection of the value of k in kNN algorithm became important because it would affect the performance of the algorithm kNN, therefore it was necessary to know how the value of k and the level of accuracy. The k-Fold Cross Validation method and Accuracy Test was used to determine the value of k-Optimal. The result showed that the value of k = 5 was defined as k-Optimal which was then be applied in the kNN algorithm for prediction of timely graduation of students based on the Grade Point Average up to 4th semester. Keywords: kNN, k-Optimal, Classification, Data mining, k-Fold Cross Validation method Tumpukan data pada database sistem informasi akademik Program Studi Ilmu Komputer FMIPA Unlam belum dimanfaatkan secara maksimal, padahal dari data tersebut dapat memberikan sebuah informasi baru yang belum diketahui sebelumnya. Teknik data mining dapat digunakan untuk memprediksi kelulusan tepat waktu mahasiswa. Penelitian menggunakan metode k-Nearest Nieghbor yang merupakan sebuah metode untuk melakukan klasifikasi terhadap objek berdasarkan data training yang jaraknya paling dekat dengan objek tersebut. Pemilihan nilai k pada algoritma kNN menjadi hal yang penting karena akan mempengaruhi kinerja dari algoritma kNN, oleh karena itu perlu diketahui berapa nilai k dan tingkat akurasinya. Metode k-Fold Cross Validation dan Uji Akurasi digunakan untuk mengetahui nilai k-Optimal. Hasil yang didapat adalah nilai k=5 dengan tingkat akurasi sebesar 80.00% yang ditetapkan sebagai k-Optimal. Nilai k

Aileler, Öğretmenler ve Dil ve Konuşma Terapistlerinin Çocuklardaki Dil ve Konuşma Bozukluklarına Yönelik Tutum ve Bilgilerinin Değerlendirilmesi

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Bülent TOĞRAM

2015-12-01

Full Text Available Çocuklardaki iletişim sorunları aile bildirimleri, öğretmen raporları ve dil ve konuşma terapistleri (DKT tarafından yapılan değerlendirmeler ile saptanmaktadır. Dil ve konuşma bozukluklarının önlenmesi ve terapisinde işbirliği içinde bulunmaları gereken bu üçlü grubun konuya ilişkin görüş ve tutumları alanyazında önemli bulunmaktadır. Bu çalışmanın amacı, ebeveynlerin, öğretmenlerin ve DKT’lerin dil ve konuşma bozuklukları alanındaki sorumluluk ve rollerini nasıl algıladıklarını, dil ve konuşma bozukluğu olan çocuğun akademik ve sosyal başarısına yönelik tutumlarını, dil ve konuşma bozukluklarının nedenleri ve terapisine yönelik düşüncelerini betimlemektir. Çalışmaya 37 aile bireyi, 46 öğretmen ve 35 DKT katılmıştır. Anket yoluyla elde edilen veriler her grubun konuya ilişkin bilgisini ortaya koymak için karşılaştırılmıştır. Dil ve konuşma bozukluğu olan çocukların akademik/sosyal başarılarına yönelik tutumlarında diğer katılımcı gruplara göre öğretmenlerin, çocukların terapi gereksinimlerine yönelik tutumlarında ise ailelerin daha kararsız tutumlar geliştirdikleri dikkat çekmektedir.Dil ve konuşma bozukluklarının nedenleri ve terapi eksikliklerine yönelik bilgilerinde grupların öncelikli sıralamalarının farklılaştığı görülmüştür

Pembelajaran Kooperatif pada Mata Kuliah Akuntansi Pengantar: Suatu Eksperimen Lapangan

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Junaidi Junaidi

2009-01-01

dan kemampuan akademik. Sebanyak 43 orang mahasiswa program studi akuntansi fakultas ekonomi universitas trunojoyo diberi perlakuan pembelajaran kooperatif. Dari hasil pengujian probit, dapat disimpulkan bahwa hanya variabel pengimplementasi pembelajaran kooperatif yang signifikan berpengaruh terhadap perolehan nilai mata kuliah akuntansi pengantar II yang memuaskan. Hasil pengujian analasis varian multivariate menyimpulkan bahwa tidak ada hubungan dan perbedaan antara jenis kelamin laki-laki dan wanita serta antara mahasiswa yang memiliki kemampuan akademik yang tinggi dan yang rendah dalam memandang variabel-variabel yang mengukur konstruk pembelajaran kooperatif.Kata Kunci: pembelajaran kooperatif, sikap, kemampuan dan jenis kelamin

PENGEMBANGAN BUDAYA SEKOLAH BERPRESTASI: STUDI TENTANG PENANAMAN NILAI DAN ETOS BERPRESTASI DI SMA KARANGTURI

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Agus Yuliono

2013-04-01

Full Text Available Tujuan penelitian ini adalah untuk mendeskripsikan bentuk budaya sekolah berprestasi, proses penanaman nilai dan etos berprestasi kepada peserta didik dan mengetahui implikasi dari pengembangan budaya sekolah berprestasi di SMA Karangturi. Penelitian ini menggunakan pendekatan deskriptif kualitatif. Pengumpulan data menggunakan teknik observasi, wawancara dan dokumentasi. Hasil penelitian menunjukkan bahwa bentuk budaya sekolah berprestasi di SMA Karangturi mencakup empat poin yaitu: keseimbangan antara pembinaan akademik dan nonakademik, penanaman karakter melalui pelajaran, budaya mencintai almamater dan pentingnya nilai kerokhanian. Penanaman nilai dan etos berprestasi pada peserta didik dilakukan melalui kegiatan orientasi sekolah, proses pembelajaran, evaluasi belajar, ekstrakurikuler, penghargaan prestasi, kecintaan terhadap almamater, keteladanan guru, kerjasama dengan orangtua peserta didik dan seragam patriot sebagai media penanaman budaya berprestasi. Implikasi penanaman pengembangan budaya sekolah berprestasi di SMA Karangturi terdapat dalam input (penerimaan siswa baru dan pencarian siswa berpotensi, proses (pengembangan program sekolah serta pengembangan kerjasama dan output (prestasi akademik dan nonakademik serta jumlah alumni yang melanjutkan ke perguruan tinggi. The objective of this study is to describe a model of school achievement culture, the cultivation of values ​​and ethos of achievement to students and know the implications of the development of school culture on students’ achievement in Karangturi high school. This study used a qualitative descriptive approach. Techniques of collecting data were observation, interviews and documentation. This study uses sources and methods triangulation for data validation. The results show that the  school achievement culture in Karangturi high school contains four pillars, namely: a balance between academic and non-academic achievement, building character

Multiphoton atomic ionization in the field of a very short laser pulse

International Nuclear Information System (INIS)

Popov, V.S.

2001-01-01

Closed analytic expressions are derived for the probability of multiphoton atomic and ionic ionization in a variable electric field E(t), which are applicable for arbitrary Keldysh parameters γ. Dependencies of the ionization probability and photoelectron pulse spectrum on the shape of a very short laser pulse are analyzed. Examples of pulse fields of various forms, including a modulated light pulse with a Gaussian or Lorentz envelope, are considered in detail. The interference effect in the photoelectron energy spectrum during atomic ionization by a periodic field of a general form is examined. The range of applicability of the adiabatic approximation in the multiphoton ionization theory is discussed. The imaginary time method is used in the calculations, which allows the probability of particle tunneling through oscillating barriers to be effectively calculated

Analytical models of optical response in one-dimensional semiconductors

International Nuclear Information System (INIS)

Pedersen, Thomas Garm

2015-01-01

The quantum mechanical description of the optical properties of crystalline materials typically requires extensive numerical computation. Including excitonic and non-perturbative field effects adds to the complexity. In one dimension, however, the analysis simplifies and optical spectra can be computed exactly. In this paper, we apply the Wannier exciton formalism to derive analytical expressions for the optical response in four cases of increasing complexity. Thus, we start from free carriers and, in turn, switch on electrostatic fields and electron–hole attraction and, finally, analyze the combined influence of these effects. In addition, the optical response of impurity-localized excitons is discussed. - Highlights: • Optical response of one-dimensional semiconductors including excitons. • Analytical model of excitonic Franz–Keldysh effect. • Computation of optical response of impurity-localized excitons

How should we understand non-equilibrium many-body steady states?

Science.gov (United States)

Maghrebi, Mohammad; Gorshkov, Alexey

: Many-body systems with both coherent dynamics and dissipation constitute a rich class of models which are nevertheless much less explored than their dissipationless counterparts. The advent of numerous experimental platforms that simulate such dynamics poses an immediate challenge to systematically understand and classify these models. In particular, nontrivial many-body states emerge as steady states under non-equilibrium dynamics. In this talk, I use a field-theoretic approach based on the Keldysh formalism to study nonequilibrium phases and phase transitions in such models. I show that an effective temperature generically emerges as a result of dissipation, and the universal behavior including the dynamics near the steady state is described by a thermodynamic universality class. In the end, I will also discuss possibilities that go beyond the paradigm of an effective thermodynamic behavior.

Scaling of the low-energy structure in above-threshold ionization in the tunneling regime: theory and experiment.

Science.gov (United States)

Guo, L; Han, S S; Liu, X; Cheng, Y; Xu, Z Z; Fan, J; Chen, J; Chen, S G; Becker, W; Blaga, C I; DiChiara, A D; Sistrunk, E; Agostini, P; DiMauro, L F

2013-01-04

A calculation of the second-order (rescattering) term in the S-matrix expansion of above-threshold ionization is presented for the case when the binding potential is the unscreened Coulomb potential. Technical problems related to the divergence of the Coulomb scattering amplitude are avoided in the theory by considering the depletion of the atomic ground state due to the applied laser field, which is well defined and does not require the introduction of a screening constant. We focus on the low-energy structure, which was observed in recent experiments with a midinfrared wavelength laser field. Both the spectra and, in particular, the observed scaling versus the Keldysh parameter and the ponderomotive energy are reproduced. The theory provides evidence that the origin of the structure lies in the long-range Coulomb interaction.

Theory of photoelectron spectroscopy for organic molecules and their crystals

International Nuclear Information System (INIS)

Fujikawa, Takashi; Niki, Kaori; Sakuma, Hiroto

2015-01-01

Highlights: • Some specific features in photoemission theory from organic solids are reviewed. • Extrinsic and intrinsic effects are discussed. • Photoemission from extended levels is compared with that from core levels. • First principle many-body theories are discussed on the basis of nonequilibrium Green's functions. - Abstract: In this short review we discuss recent progress in photoemission theory for organic molecules and their crystals. We discuss some important features in Keldysh Green's function theory for the photoemission. We briefly discuss many-body aspects in photoemission from core and extended levels. In particular phonon effects are investigated in more detail since organic solids are typically soft where electron–phonon interaction is important. Debye–Waller factor suppresses the interference effects of photoelectron waves which makes ARPES analyses useless, particularly in high energy region.

Impact ionization in GaAs: A screened exchange density-functional approach

International Nuclear Information System (INIS)

Picozzi, S.; Asahi, R.; Geller, C.B.; Continenza, A.; Freeman, A.J.

2001-01-01

Results are presented of a fully ab initio calculation of impact ionization rates in GaAs within the density functional theory framework, using a screened-exchange formalism and the highly precise all-electron full-potential linearized augmented plane wave method. The calculated impact ionization rates show a marked orientation dependence in k space, indicating the strong restrictions imposed by the conservation of energy and momentum. This anisotropy diminishes as the impacting electron energy increases. A Keldysh type fit performed on the energy-dependent rate shows a rather soft edge and a threshold energy greater than the direct band gap. The consistency with available Monte Carlo and empirical pseudopotential calculations shows the reliability of our approach and paves the way to ab initio calculations of pair production rates in new and more complex materials

Inelastic electron tunneling through degenerate and nondegenerate ground state polymeric junctions

International Nuclear Information System (INIS)

Golsanamlou, Z.; Bagheri Tagani, M.; Rahimpour Soleimani, H.

2015-01-01

Highlights: • Current–voltage characteristics of two polymeric junctions are studied. • Current is reduced in phonon assistant tunneling regime. • Behavior of current is independent of temperature. • Elastic energy changes current drastically. - Abstract: The inelastic electron transport properties through two polymeric (trans-polyacetylene and polythiophene) molecular junctions are studied using Keldysh nonequilibrium Green function formalism. The Hamiltonian of the polymers is described via Su–Schrieffer–Heeger model and the metallic electrodes are modeled by the wide-band approximation. Results show that the step-like behavior of the current–voltage characteristics is deformed in presence of strong electron–phonon interaction. Also, the magnitude of current is slightly decreased in the phonon assistant electron transport regime. In addition, it is observed that the I–V curves are independent of temperature

5E Öğrenme Modeli ve İşbirlikli Öğrenme Yönteminin Biyoloji Dersi Başarısına Etkisi*

OpenAIRE

AKTAŞ, Murat

2013-01-01

Bu çalışmanın amacı; biyoloji dersinde 5E öğrenme modeli ve işbirlikli öğrenme yönteminin biyoloji dersi akademik başarısına etkilerini araştırmaktır. Ankara-Çankaya Milli Piyango Anadolu Lisesi’nde 2010-2011 eğitim-öğretim yılında öğrenimlerini sürdüren 11. sınıftaki 93 fen grubu öğrencisi araştırmanın çalışma grubunu oluşturmuştur. “Kalıtım, Gen Mühendisliği ve Biyoteknoloji” ünitesi 1. deney grubunda 5E öğrenme modeli ile, 2. deney grubunda işbirlikli öğrenme yöntemi ile, kontrol grubunda ...

“Citation Style Language” Uygulaması: APA Kaynak Gösterme Biçiminin Türkçeye Adaptasyonu=“Citation Style Language” Application: The Adaptation of APA Style to Turkish Language

OpenAIRE

Kasım Binici

2013-01-01

Bibliyografya yönetim programları, araştırma metinlerin yazımında yazarlara büyük avantajlar sağlamaktadır.Akademik çevrede EndNote, RefWorks, Zotero, Mendeley en popüler yazılımlardır. Türkçe kaynak gösterme kurallarının tanımlı olduğu biçim dosyalarının olmaması nedeniyle araştırma metni yazımında bu programlar işlevsiz kalmaktadır. Bu çalışmada, APA kaynak gösterme biçiminin Türkçeye adaptasyonu sağlanarak CSL uygulaması ile biçim dosyasında kodlar yazılmıştır. Yeni biçim dosyası Zotero...

SISTEM INFORMASI KEUANGAN SESUAI STANDAR BAN-PT TERINTEGRASI SISFO KAMPUS 4.1

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Syahiduzzaman Syahiduzzaman

2015-03-01

Full Text Available Abstrak-Standar keuangan adalah salah satu standar yang dinilai dalam instrumen BAN-PT, yaitu pada standar 6.1. Pengelolaan keuangan sebuah perguruan tinggi harus memenuhi standar tersebut. Untuk dapat mengetahui seberapa besar tingkat pemenuhan standar diperlukan penilaian. Sistem informasi keuangan yang dikembangkan dalam penelitian ini digunakan untuk memasukkan data transaksi keuangan, mencatatnya dalam sistem akuntansi, dan melaporkannya. Laporan-laporan yang disajikan berbentuk tabel dan grafik yang menyatakan kinerja keuangan dan diukur sesuai dengan standar 6.1. BAN-PT. Sistem informasi keuangan ini, juga terintegrasi dengan SISFOKAMPUS 4.1 yang merupakan sistem informasi akademik open source yang berbasis web. Hasil dari penelitian ini adalah sistem informasi keuangan dengan fungsi khusus yaitu menilai kinerja keuangan yang sesuai dengan standar 6.1. BAN-PT yang dapat digunakan untuk melakukan audit internal.   Kata kunci: Standar 6.1. BAN-PT, Sistem Informasi Keuangan, SISFOKAMPUS 4.1.

اللغة العربية وأهميتها في فهم تعاليم الإسلام

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Muhammad Nafis Djuaeni

2013-06-01

Full Text Available Bahasa Arab sebagai bahasa pergaulan di kalangan orang Arab mengalami perkembangan pesat dan menempati posisi yang tinggi di antara bahasa-bahasa di dunia karena di samping sebagai bahasa komunikasi, ia juga sebagai bahasa ilmiyah, budaya, dan bahasa agama, yang akhirnya menjadi bahasa internasional. Di antara keistimewaan bahasa Arab yang menguatkan beragam fungsinya adalah ia digunakan sebagai bahasa al-Qur’an dan hadis, kosa kata yang kaya dan dinamis, dan penyebarannya yang mendunia. Pada abad pertengahan, karya-karya intelektual Muslim yang ditulis dalam bahasa Arab merupakan rujukan utama bagi kemajuan peradaban Eropa, dan pada masa modern, bahasa Arab merupakan salah satu faktor perkembangan dunia pers dan akademik yang membuatnya diajarkan di lembaga-lembaga bahasa dan pergurun tinggi di berbagai belahan dunia. Dengan demikian, urgensi bahasa Arab bukan saja untuk memahami ajaran agama Islam secara mendalam tapi juga untuk penyebaran peradaban Islam lebih mendunia

EFEK GENDER DAN TIPE KEPRIBADIAN DALAM PROSES PEMEROLEHAN BAHASA JAWA SEBAGAI BAHASA KEDU

Directory of Open Access Journals (Sweden)

Paundra Pristyasiwi

2018-02-01

Full Text Available Pemerolehan bahasa kedua tidak lepas dari beberapa faktor pendukung dan faktor penghambat. Salah satu faktor yang berpengaruh dalam keberhasilan proses pemerolehan bahasa kedua adalah usia, jenis kelamin dan tentunya perbedaan kepribadian setiap individu. Tujuan dari penelitian ini adalah untuk mendiskripsikan efek gender dan tipe kepribadian terhadap pemerolehan bahas Jawa sebagai bahasa kedua pada siswa di SMK Giki 1 Surabaya. Penelitian ini dilakukan pada siswa kelas sebelas dan duabelas yang berasal dari luar Jawa (Surabaya tahun akademik 2017/2018. Metode penelitian yang digunakan adalah metode deskriptif kualitatif dengan model analisis kategoris deskriptif. Hasil penelitian ini membuktikan bahwa (1 terdapat perbedaan pada proses pemerolehan bahasa kedua atara siswa perempuan dan laki-laki, siswa perempuan memiliki kemauan dan kemampuan yang lebih tinggi daripada siswa laki-laki, (2 terdapat perbedaan penguasaan pemerolehan bahasa pada siswa berkepribadian ekstrovert dan introvert, siswa ektrovert memiliki kompetensi pemerolehan lebih tinggi daripada siswa berkepribadian introvert.

AKRAN REHBERLİĞİ PROGRAMININ ERGENLERİN AKADEMİK BAŞARISINA ETKİSİ

OpenAIRE

YILDIZ, Muhammed

2018-01-01

Araştırma akran rehberliğinin ergenlerin akademik başarılarına etkisini incelemek amacıyla gerçekleştirilmiştir. Araştırmalisede öğrenim gören 179 öğrenciyle gerçekleştirilmiştir. Daha önceden belirlenen akran rehberi öğrencilerin yürüttüğüçalışmalar için duyuru yapılmıştır. Öğrencilerden gönüllü olanlar deney grubuna dâhil edilmiştir. Deney grubundakiöğrenciler bir eğitim öğretim dönemi boyunca akran rehberliği çalışmalarına dâhil edilmiştir. Çalışmaların sonunda deney vekontrol grubundaki ö...

HUBUNGAN ANTARA SELF EFFICACY DENGAN FLOW AKADEMIK PADA SISWA AKSELERASI SMPN 1 SIDOARJO

Directory of Open Access Journals (Sweden)

Eni Purwati

2016-12-01

Full Text Available Academic Flow is a condition where person feel comfortable, able to concentrate, has inner motivation, and also able to enjoy doing academic activity. Self efficacy is believe inside someone has the ability to decide correct behavior to achieve desired success. Purpose of this research is to know the correlation between self efficacy and academic flow on student acceleration. Self efficacy is acknowledged as the trigger which pushes someone learning activity until they had flow condition. This research is correlational quantitative with a subject 24 acceleration students. The result of the study showed correlation between self efficacy and academic flow on acceleration students positive linear, which is mean the higher self efficacy the higher academic flow. High self efficacy able to control the behavior to maintain the effort to do the assignment which make easy to reach the academic flow.

Prestasi Belajar Mahasiswa Penerima Beasiswa Bidik Misi FMIPA UNM Tahun Akademik 2010/2011

OpenAIRE

. Hamka L.; . Hartono

2012-01-01

DOWNLOAD PDFThe research was a descriptive study to see how the student learning achievement of bidik misi awardees at the beginning of academic year 2010/2011. Population and sample in this study were all students which received bidik misi scholarship at Faculty of Mathematic and Natural Science, Makassar State University (FMIPA UNM). Method collecting data by taking the documentary secondary of GPA at beginning semester. The data obtained in this study were analyzed using descriptive statis...

Prestasi Belajar Mahasiswa Penerima Beasiswa Bidik Misi FMIPA UNM Tahun Akademik 2010/2011

Directory of Open Access Journals (Sweden)

. Hamka L.

2012-04-01

Full Text Available DOWNLOAD PDFThe research was a descriptive study to see how the student learning achievement of bidik misi awardees at the beginning of academic year 2010/2011. Population and sample in this study were all students which received bidik misi scholarship at Faculty of Mathematic and Natural Science, Makassar State University (FMIPA UNM. Method collecting data by taking the documentary secondary of GPA at beginning semester. The data obtained in this study were analyzed using descriptive statistical and categorized according academic guidance of Departement of Biology FMIPA UNM year 2010. Study showed that the average learning achievement of students were very satisfactory with average GPA 3.01. There were 12.28% of students who in honors category (cumlaude, GPA 3.51 to 4,00. While, 57.89% of students in category of very satisfactory (GPA 2.76 to 3.50, and 26.32% in the category satisfying (GPA 2.50 to 2.75. Nevertheless, there have about 1.75% of students in the category enough (GPA 2.00 to 2.49, and also 1.75% of students in less category (GPA 0.00 to 1.99. Key words: Learning achievement, bidik misi scholarship

KINERJA AKADEMIK PASCA SERTIFIKASI AUN-QA PADA PROGRAM STUDI DI INSTITUT PERTANIAN BOGOR

Directory of Open Access Journals (Sweden)

Adelyna Adelyna

2016-05-01

Full Text Available The aims of the research are to evaluate the academic performance progress of the six study programs of IPB after the certification of AUN-QA. The research was a case study in six study programs that had been certified by AUN-QA until December 2014. This research was conducted with the objectives of defining the relevant indicators of BSC IPB and AUN-QA criteria, analyzing the criteria values of AUN-QA after the AUN-QA certification, analyzing the academic performance based on KPI BSC after the AUN-QA certification, and analyzing the problems in improving academic performance as the basis for the formulation of strategies for improving academic quality. The method used in this research was the balanced scorecard approach (BSC. The results showed that the certification of AUN-QA contains 15 relevant criteria and supports the achievement of BSC IPB. Key performance indicators (KPI BSC IPB supported by the AUN-QA criteria consist of 21 of the 33 indicators of BSC IPB, and 14 of them are relegated to the BSC department indicators. The AUN-QA criteria values on the study program have increased with the highest criterion value in student quality and the lowest one in support staff quality. The weak criteria required to be improved include support staff quality, student assessment, stakeholder feedback, and program specification.Keywords: AUN-QA certification, academic performance, balanced scorecard

Optimalisasi Penerapan Prinsip Good Governance Bidang Akademik dalam Upaya Mewujudkan Good University Governance

Directory of Open Access Journals (Sweden)

Hery Harjono Muljo

2014-05-01

Full Text Available This study wants to know and understand whether good governance principles have been well applied as well as the factors influencing optimization of the implementation of good governance principles on the academic field in an effort to realize good university governance in Bina Nusantara University. The study aims to evaluate the implementation of good governance principles on the academic field, know the factors that affect the implementation of good governance principles on the academic field, and improve and develop the academic areas in accordance with good governance principles in order to maximize the role of Bina Nusantara University as Good University Governance. The approach model used to understand the implementation of good governance principles was a model to educational institution using the 8 principles, namely academic freedom, shared governance, clear rights and responsibilities, selection at merit, financial stability, accountability, regular testing of standards, and the importance of close cooperation. Research used qualitative method with descriptive analysis, by analyzing the factors influencing optimization of the implementation of good governance principles, particularly on academic areas. The results achieved there were 18 factors that affect the optimization of the implementation of good governance principles. Then the factors affected the optimization ofthe implementation of good governance principles the most are operational centralization and academic decentralization which were the novelty of this study.

Pelaksanaan Supervisi Akademik oleh Kepala Madrasah Aliyah Swasta di Kabupaten Sukabumi Jawa Barat

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Mulyawan Safwandy Nugraha

2015-04-01

Full Text Available This study discusses the implementation of the academic supervision conducted by a principal of Private Madrasah Aliyah of Cisaat Sukabumi. The results of this study concluded that the implementation of the academic supervision conducted by the principals are not systematic and not pre-programmed so that teachers do not feel any relief from the headmaster in improving the quality of learning. This is due to the low competence of the principals in academic supervision and they tended to judge and find fault with teachers without providing advice and solutions. however, the principals have a plan/program of supervision, commitment and high motivation, seek to meet the performance assessment of supervisors. Based on the above, it needs guidance in the form of education and training to increase the competence of the principals of the madrasah and giving a reward to the successful principals.

Audit Sistem Informasi Akademik Menggunakan Framework Cobit 4.1 (Studi Kasus Ibi Darmajaya)

OpenAIRE

Purwati, Neni

2014-01-01

Academic Information System Management that is not managed properly will result in low quality of service, low levels of customer satisfaction / student, so it can affect the level of stakeholder confidence in the institutions. The foregoing can be addressed by monitoring / evaluation periodically the implementation SIAKAD. With the monitoring of the implementation process SIAKAD expected to improve any shortcomings and weaknesses of the current system become better and in accordance with bus...

PENGELOLAAN SUMBER DAYA HUTAN DI KABUPATEN LAMPUNG BARAT (Suatu Executive Summary Naskah Akademik

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Armen Yasir

2014-03-01

Full Text Available Tujuan penelitian ini adalah untuk mengetahui Kajian Tioritis dan Praktik Empiris, Landasan Filosofis, Sosiologis dan Yuridis, Peraturan Perundang-Undangan Yang Terkait, Jangkauan, Arah Pengaturan dan Ruang Lingkup Materi Muatan Peraturan Daerah Pengelolaan Sumberdaya Hutan Di Kabupaten Lampung Barat. Hasil penelitian menunjukkan bahwa secara teoritis dan praktis pengelolaan sumber daya hutan adalah berbasis pada kewenangan daerah yang bersumber pada peraturan perundang-undangan. Landasan filosofis bersandar pada nilai-nilai kearifan pemanfaat sumber daya hutan, sedangkan landasan sosiologis bersumber pada perilaku publik dan landasan yuridis secara hirarkis struktural bersumber dari norma atau peraturan perundang-undangan dari tingkat terendah sampai pada derajat konstitusi. Adapun peraturan perundang-undangan terkait meliputi bidang konesrvasi alam, kehutanan dan pengelolaan lingkungan hidup. Adapun Jangkauan, Arah Pengaturan Dan Ruang Lingkup Materi Muatan Peraturan Daerah Pengelolaan Sumberdaya Hutuan Di Kabupaten Lampung Barat adalah mencakup materi muatan peraturan daerah yang diperintah oleh peraturan perundang-undangan yang lebih tinggi, atau yang sederajat maupun dalam rangka menjalankan urusan otonomi daerah. Kata kunci : Pengelolaan, Sumberdaya Hutan dan Otonomi Daerah.

Upaya Mereduksi Prokrastinasi Akademik Melalui Konseling Kelompok dengan Pendekatan Behavioristik Pada Siswa SMK

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Puswanti Puswanti

2014-06-01

Full Text Available This study aims to determine the effectiveness of group counseling with a behavioristic approach to reducing academic procrastination on vocational students. This type of research is classroom action research, consisting of two cycles and each cycle consisting of three acts. Each cycle begins with the planning, implementation, observation, and reflection. The research subject was determined by purposive sampling of six students with high academic procrastination level criteria. The research instrument used in the form of academic procrastination scale and guidelines for observation. Data analysis using t-test formula. The results showed that the average student academic procrastination 107.33 pretest and posttest mean of 66.5 and 100% of the students are in the category of academic procrastination low after getting action. It can be concluded that the counseling group with the approach used to reduce the effective behavioristic academic procrastination, vocational students. The results of this study useful for counselors to help students reduce academic procrastination through a counseling group with the behavioristic approach.

PROKRASTINASI AKADEMIK PESERTA DIDIK DI SMA NEGERI 1 GUNUNG TULEH KABUPATEN PASAMAN BARAT

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Wira Solina

2018-05-01

Full Text Available This resear chis motivated by thep henomenon of their students perform academic procrastinationin SMAN 1 Gunung Tuleh West Pasaman. Theresear chobjec tivetodescribe: 1.Academic procrastination learnersview sofpost ponement ofacademic assignments, 2.Judging from theinaction anddelaysina cademic tasks,3.Judging from thediscrepancy between theplanwit hactual performance,4. Judging fromdoingo theractiviti esmore enjoyable.Thisresear chis quantitative descriptive. The study population wasthe whole class XI numbered 170 people. Sampling Stratified Random Sampling technique was used with the number of 117 people. Instrumentused questionnaire. Data were analy zedusing interval. Theresult showed that: 1. Academic procrastination learners view sofpostponement ofacademic task sthat arein thelowcategory, 2. Judging from the inaction and delaysina cademic tasks thatarein the category is quite high, 3. Viewed from amismat chbetweent heplan with actualper form anceisat the low category ,4. Judging from doingo ther activities aremoref untobeona fairly high category.

PERANCANGAN INTEGRASI SISTEM INFORMASI AKADEMIK DENGAN E-LEARNING (Studi Kasus : Program Studi XYZ

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Brav Deva Bernadhi

2017-01-01

ABSTRACT   Growth of access to information at the present time is running fast. Public or the user to obtain data or information that is accurate, current, and a quick and easy right now is not difficult. The development of the Internet in today's increasingly rapidly and can not be separated from the world of education. Presence information systems and the Internet continues to grow, then created a way of delivering education electronically with the help of internet. The information system is at present better known as electronic learning (e-learning. E-learning is an information system that helps instructional manual to electronic learning. In the world of education to enable faculty and students to manage course, nowadays there are more Academic Information System shortened by SIA. SIA is an information system that manages and processes all the data of academic residing in the academic field. KRS SIA online that are closely related to the subjects that will be filled in e-learning. From the view of these needs, it helps both information systems are combined so that the user fills in SIA, the e-learning systems relating to subjects who follow will update itself and needs to be designed so that both the information system can run well and can used by the user. Ergonomic approach is needed for these systems is the Human Computer Interaction (HCI so that the developed system will be convenient, easy and safe to use by the user, or in             other words is user friendly. These journals are intended to develop a system AIS integration with e-learning in order to assist and facilitate the activities of learning in Higher Education.

Spin diffusion and torques in disordered antiferromagnets

KAUST Repository

Manchon, Aurelien

2017-02-01

We have developed a drift-diffusion equation of spin transport in collinear bipartite metallic antiferromagnets. Starting from a model tight-binding Hamiltonian, we obtain the quantum kinetic equation within Keldysh formalism and expand it to the lowest order in spatial gradient using Wigner expansion method. In the diffusive limit, these equations track the spatio-temporal evolution of the spin accumulations and spin currents on each sublattice of the antiferromagnet. We use these equations to address the nature of the spin transfer torque in (i) a spin-valve composed of a ferromagnet and an antiferromagnet, (ii) a metallic bilayer consisting of an antiferromagnet adjacent to a heavy metal possessing spin Hall effect, and in (iii) a single antiferromagnet possessing spin Hall effect. We show that the latter can experience a self-torque thanks to the non-vanishing spin Hall effect in the antiferromagnet.

Molecular beam epitaxy grown Ge/Si pin layer sequence for photonic devices

International Nuclear Information System (INIS)

Schulze, J.; Oehme, M.; Werner, J.

2012-01-01

A key challenge to obtain a convergence of classical Si-based microelectronics and optoelectronics is the manufacturing of photonic integrated circuits integrable into classical Si-based integrated circuits. This integration would be greatly enhanced if similar facilities and technologies could be used. Therefore one approach is the development of optoelectronic components and devices made from group-IV-based materials such as SiGe, Ge or Ge:Sn. In this paper the optoelectronic performances of a pin diode made from a Ge/Si heterostructure pin layer sequence grown by molecular beam epitaxy are discussed. After a detailed description of the layer sequence growth and the device manufacturing process it will be shown that – depending on the chosen operating point and device design – the diode serves as a broadband high speed photo detector, Franz–Keldysh effect modulator or light emitting diode.

Molecular beam epitaxy grown Ge/Si pin layer sequence for photonic devices

Energy Technology Data Exchange (ETDEWEB)

Schulze, J., E-mail: schulze@iht.uni-stuttgart.de; Oehme, M.; Werner, J.

2012-02-01

A key challenge to obtain a convergence of classical Si-based microelectronics and optoelectronics is the manufacturing of photonic integrated circuits integrable into classical Si-based integrated circuits. This integration would be greatly enhanced if similar facilities and technologies could be used. Therefore one approach is the development of optoelectronic components and devices made from group-IV-based materials such as SiGe, Ge or Ge:Sn. In this paper the optoelectronic performances of a pin diode made from a Ge/Si heterostructure pin layer sequence grown by molecular beam epitaxy are discussed. After a detailed description of the layer sequence growth and the device manufacturing process it will be shown that - depending on the chosen operating point and device design - the diode serves as a broadband high speed photo detector, Franz-Keldysh effect modulator or light emitting diode.

Nonlocal effective actions in semiclassical gravity: Thermal effects in stationary geometries

Science.gov (United States)

Elías, M.; Mazzitelli, F. D.; Trombetta, L. G.

2017-11-01

We compute the gravitational effective action by integrating out quantum matter fields in a weak gravitational field, using the Schwinger-Keldysh (in-in) formalism. We pay particular attention to the role of the initial quantum state in the structure of the nonlocal terms in the effective action, with an eye to nonlinear completions of the theory that may be relevant in astrophysics and cosmology. In this first paper we consider a quantum scalar field in thermal equilibrium, in a stationary gravitational field. We obtain a covariant expression for the nonlocal effective action, which can be expressed in terms of the curvature tensor, the four-velocity of the thermal bath, and the local Tolman temperature. We discuss the connection between the results for ultrastatic and static metrics through conformal transformations, and the main features of the thermal corrections to the semiclassical Einstein equations.

Theory of photoelectron spectroscopy for organic molecules and their crystals

Energy Technology Data Exchange (ETDEWEB)

Fujikawa, Takashi, E-mail: tfujikawa@faculty.chiba-u.jp; Niki, Kaori; Sakuma, Hiroto

2015-10-01

Highlights: • Some specific features in photoemission theory from organic solids are reviewed. • Extrinsic and intrinsic effects are discussed. • Photoemission from extended levels is compared with that from core levels. • First principle many-body theories are discussed on the basis of nonequilibrium Green's functions. - Abstract: In this short review we discuss recent progress in photoemission theory for organic molecules and their crystals. We discuss some important features in Keldysh Green's function theory for the photoemission. We briefly discuss many-body aspects in photoemission from core and extended levels. In particular phonon effects are investigated in more detail since organic solids are typically soft where electron–phonon interaction is important. Debye–Waller factor suppresses the interference effects of photoelectron waves which makes ARPES analyses useless, particularly in high energy region.

Nonequilibrium Green function techniques applied to hot electron quantum transport

International Nuclear Information System (INIS)

Jauho, A.P.

1989-01-01

During the last few years considerable effort has been devoted to deriving quantum transport equations for semiconductors under extreme conditions (high electric fields, spatial quantization in one or two directions). Here we review the results obtained with nonequilibrium Green function techniques as formulated by Baym and Kadanoff, or by Keldysh. In particular, the following topics will be discussed: (i) Systematic approaches to reduce the transport equation governing the correlation function to a transport equation for the Wigner function; (ii) Approximations reducing the nonmarkovian quantum transport equation to a numerically tractable form, and results for model semiconductors; (iii) Recent progress in extending the formalism to inhomogeneous systems; and (iv) Nonequilibrium screening. In all sections we try to direct the reader's attention to points where the present understanding is (at best) incomplete, and indicate possible lines for future work. (orig.)

Spin diffusion and torques in disordered antiferromagnets

KAUST Repository

Manchon, Aurelien

2017-01-01

We have developed a drift-diffusion equation of spin transport in collinear bipartite metallic antiferromagnets. Starting from a model tight-binding Hamiltonian, we obtain the quantum kinetic equation within Keldysh formalism and expand it to the lowest order in spatial gradient using Wigner expansion method. In the diffusive limit, these equations track the spatio-temporal evolution of the spin accumulations and spin currents on each sublattice of the antiferromagnet. We use these equations to address the nature of the spin transfer torque in (i) a spin-valve composed of a ferromagnet and an antiferromagnet, (ii) a metallic bilayer consisting of an antiferromagnet adjacent to a heavy metal possessing spin Hall effect, and in (iii) a single antiferromagnet possessing spin Hall effect. We show that the latter can experience a self-torque thanks to the non-vanishing spin Hall effect in the antiferromagnet.

Multiphoton ionization of the hydrogen atom by a circularly polarized electromagnetic field

International Nuclear Information System (INIS)

Prepelitsa, O.B.

1999-01-01

This paper examines the multiphoton ionization of the ground state of the hydrogen atom in the field of a circularly polarized intense electromagnetic wave. To describe the states of photoelectrons, quasiclassical wave functions are introduced that partially allow for the effect of an intense electromagnetic wave and that of the Coulomb potential. Expressions are derived for the angular and energy distributions of photoelectrons with energies much lower than the ionization potential of an unperturbed atom. It is found that, due to allowance for the Coulomb potential in the wave function of the final electron states, the transition probability near the ionization threshold tends to a finite value. In addition, the well-known selection rules for multiphoton transitions in a circularly polarized electromagnetic field are derived in a natural way. Finally, the results are compared with those obtained in the Keldysh-Faisal-Reiss approximation

Quantum theory of the optical and electronic properties of semiconductors

CERN Document Server

Haug, Hartmut

2009-01-01

This invaluable textbook presents the basic elements needed to understand and research into semiconductor physics. It deals with elementary excitations in bulk and low-dimensional semiconductors, including quantum wells, quantum wires and quantum dots. The basic principles underlying optical nonlinearities are developed, including excitonic and many-body plasma effects. Fundamentals of optical bistability, semiconductor lasers, femtosecond excitation, the optical Stark effect, the semiconductor photon echo, magneto-optic effects, as well as bulk and quantum-confined Franz-Keldysh effects, are covered. The material is presented in sufficient detail for graduate students and researchers with a general background in quantum mechanics.This fifth edition includes an additional chapter on 'Quantum Optical Effects' where the theory of quantum optical effects in semiconductors is detailed. Besides deriving the 'semiconductor luminescence equations' and the expression for the stationary luminescence spectrum, the resu...

Relativistic theory of tunnel and multiphoton ionization of atoms in a strong laser field

International Nuclear Information System (INIS)

Popov, V. S.; Karnakov, B. M.; Mur, V. D.; Pozdnyakov, S. G.

2006-01-01

Relativistic generalization is developed for the semiclassical theory of tunnel and multiphoton ionization of atoms and ions in the field of an intense electromagnetic wave (Keldysh theory). The cases of linear, circular, and elliptic polarizations of radiation are considered. For arbitrary values of the adiabaticity parameter γ, the exponential factor in the ionization rate for a relativistic bound state is calculated. For low-frequency laser radiation , an asymptotically exact formula for the tunnel ionization rate for the atomic s level is obtained including the Coulomb, spin, and adiabatic corrections and the preexponential factor. The ionization rate for the ground level of a hydrogen-like atom (ion) with Z ≤ 100 is calculated as a function of the laser radiation intensity. The range of applicability is determined for nonrelativistic ionization theory. The imaginary time method is used in the calculations

Theoretical studies of finite size effects and screening effects caused by a STM tip in Luettinger liquids

International Nuclear Information System (INIS)

Guigou, Marine

2009-01-01

This thesis takes place in the field of condensed matter. More precisely, we focus on the finite size effects and the screening effects caused by a STM tip in a quantum wire. For that, we use, first, the Luettinger liquid theory, which allows to describe strongly correlated systems and secondly, the Keldysh formalism, which is necessary to treat the out-of-equilibrium systems. For these studies, we consider, the currant, the noise and the conductance. The noise presents a non-Poissonian behaviour, when finite size effects appear. Through the photo-assisted transport, it is shown that those effects hide the effects of the Coulomb interactions. Considering the proximity between the STM tip, used as a probe or as an injector, and a quantum wire, screening effects appear. We can conclude that they play a similar role to those of Coulomb interactions. (author) [fr

Time-dependent transport in interacting and noninteracting resonant-tunneling systems

DEFF Research Database (Denmark)

Jauho, Antti-Pekka; Wingreen, Ned S.; Meir, Yigal

1994-01-01

noninteracting resonant-tunneling system are presented. Due to the coherence between the leads and the resonant site, the current does not follow the driving signal adiabatically: a ''ringing'' current is found as a response to a voltage pulse, and a complex time dependence results in the case of harmonic......We consider a mesoscopic region coupled to two leads under the influence of external time-dependent voltages. The time dependence is coupled to source and drain contacts, the gates controlling the tunnel-barrier heights, or to the gates that define the mesoscopic region. We derive, with the Keldysh...... nonequilibrium-Green-function technique, a formal expression for the fully nonlinear, time-dependent current through the system. The analysis admits arbitrary interactions in the mesoscopic region, but the leads are treated as noninteracting. For proportionate coupling to the leads, the time-averaged current...

Collision of H- with Aq+ ions and their relevance for fusion

International Nuclear Information System (INIS)

Salzborn, E.

1993-01-01

Employing the crossed-beams technique, we have measured absolute cross sections for single- and double-electron removal from H - in collisions with ions Ar q+ and Xe q+ (q ≤ 8) at cm-energies between 20 keV and 200 keV. The single-electron removal cross sections are in excellent agreement with quantum calculations by Presnyakov and Uskov based on a generalization of the Keldysh theory for multi-photon ionization. The data allows, for the first time, a realistic modelling of plasma neutralizers proposed for efficient production of powerful H 0 beams via neutralization of energetic H - ion beams. Multi-megawatt neutral beam injection is a proven technique for auxiliary heating of magnetically confined fusion plasmas. The next fusion tokamak ITER calls for a total of 75 MW neutral beam heating based on 1.3 MeV D 0 beams

High-speed Si/GeSi hetero-structure Electro Absorption Modulator.

Science.gov (United States)

Mastronardi, L; Banakar, M; Khokhar, A Z; Hattasan, N; Rutirawut, T; Bucio, T Domínguez; Grabska, K M; Littlejohns, C; Bazin, A; Mashanovich, G; Gardes, F Y

2018-03-19

The ever-increasing demand for integrated, low power interconnect systems is pushing the bandwidth density of CMOS photonic devices. Taking advantage of the strong Franz-Keldysh effect in the C and L communication bands, electro-absorption modulators in Ge and GeSi are setting a new standard in terms of device footprint and power consumption for next generation photonics interconnect arrays. In this paper, we present a compact, low power electro-absorption modulator (EAM) Si/GeSi hetero-structure based on an 800 nm SOI overlayer with a modulation bandwidth of 56 GHz. The device design and fabrication tolerant process are presented, followed by the measurement analysis. Eye diagram measurements show a dynamic ER of 5.2 dB at a data rate of 56 Gb/s at 1566 nm, and calculated modulator power is 44 fJ/bit.

Okul Öncesi Öğretmenlerin Sınıf İçi Etkinliklerde Kullandıkları Sınıf Yönetimi Stratejilerinin İncelenmesi

OpenAIRE

AKGÜN, Ege; YARAR, Melike; DİNÇER, Çağlayan

2016-01-01

Öğretmenlerin sınıf yönetimi stratejileri, eğitim öğretim etkinliklerinin sağlıklı yürütülmesinde, çocukların akademik ve sosyal başarılarının artmasında ve çocukların yaşam becerileri kazanmasında önemli yer tutmaktadır. Bu araştırmanın amacı, okul öncesi öğretmenlerinin sınıf içi etkinliklerde kullandıkları sınıf yönetimi stratejilerinin gözlem yoluyla incelenmesidir. Araştırmanın çalışma grubunu, Ankara il merkezinde çalışan altı okul öncesi öğretmeni oluşturmaktadır. Okul öncesi öğretmenl...

PENGEMBANGAN PENGELOLAAN KELAS DALAM MENINGKATKAN EFISIENSI PEMBELAJARAN PENDIDIKAN AGAMA ISLAM (PAI

Directory of Open Access Journals (Sweden)

Moh Riza Zainuddin

2016-09-01

Sistem desentralisasi pendidikan di era sekarang ini memberikan peluang kepada setiap lembaga sekolah untuk meningkatkan kualitas mutu sekolah yaitu ikut merespon dalam meningkatkan mutu pendidikan dengan mengupayakan kepada setiap guru untuk berkreasi meningkatkan pengelolaan kelas dengan tepat agar pembelajaran berjalan secara efisien dan efektif. Dengan alasan bahwa kelas merupakan media pertemuan segala komponen pendidikan serta ujung tombak dan juga basis pendidikan. Konsep pengelolaan Kelas ini berusaha untuk memberikan penyelesaian terhadap masalah di kelas, yang cakupannya tidak hanya terbatas pada penyampaian materi saja, akan tetapi mencakup beberapa hal yang menyeluruh untuk mengorganisasi kelas antara lain: pertama kegiatan akademik berupa perencanaan, pelaksanaan dan penilaian pembelajaran. Kedua kegiatan administratif yang mencakup kegiatan procedural dan organisasional seperti penataan ruangan, pengelompokan siswa dalam pembagian tugas, penegakan disiplin kelas, pengadaan tes, pengorganisasian kelas, pelaporan. Jadi konsep pengelolaan kelas adalah berusaha memberdayakan potensi kelas yang ada seoptimal mungkin untuk mendukung proses interaksi edukatif dalam mencapai tujuan pembelajaran yang efektif khususnya dalam materi Pendidikan Agama Islam.

Ortaçağlardan 21. Yüzyıla Gazâlî’nin Kozmolojisinin Batılı Alımlanışı

OpenAIRE

GRIFFEL, Frank

2011-01-01

İslam teolojisinin konuları arasında özellikle Gazâlî’nin kozmolojisi Batı’da oldukça dikkat çekmiştir. Rönesans dönemi ilim adamları Gazâlî’nin Filozofların Tutarsızlığı (Tehâfütü’l-felâ- sife) adlı eserinin 17. meselesinde filozofların nedensellik teorilerine yönelttiği eleştirilere aşinaydılar. İslam teolojisine dair akademik araştırmaların başladığı 19. yüzyılın ilk yarısında ilim adamları, Gazâlî’nin sözkonusu meselede nedensel ilişkilerin varlığını reddettiği sonucuna ulaştılar. Gazâlî’...

1904-1905 Rus-Japon Savaşı’nın Japon Manga kitaplarına yansıması

OpenAIRE

DAVARCI, Yasemin

2015-01-01

      Bu çalışmada, 1904-1905 Rus-Japon Savaşının, Japon manga kitaplarına yansıması ele alınmıştır. Japonya’nın Rusya gibi büyük bir gücü yenerek dünya sahnesinde önemli güçler arasına girmesinde dönüm noktalarından biri olan bu savaşın, Japon toplumuna mangalar aracılığı ile nasıl yansıtıldığı incelenmiştir. Japon manga sanatçılarının Rus-Japon Savaşına bakış açılarının da görülebileceği bu çalışmada; İngilizce, Japonca ve Türkçe akademik kitap v...

SISTEM INFORMASI SARANA DAN PRASARANA SESUAI STANDAR BAN-PT TERINTEGRASI SISFOKAMPUS 4.1

Directory of Open Access Journals (Sweden)

Muhammad Ainul Yaqin

2015-03-01

Full Text Available Abstrak- Standar sarana dan prasarana adalah salah satu standar yang dinilai dalam instrumen BAN-PT, yaitu pada standar 6.2. Pengelolaan sarana dan prasarana sebuah perguruan tinggi harus memenuhi standar tersebut. Untuk dapat mengetahui seberapa besar tingkat pemenuhan standar diperlukan penilaian. Sistem informasi sarana dan prasarana yang dikembangkan dalam penelitian ini digunakan untuk memasukkan data-data usulan pengadaan, penerimaan, distribusi, penggunaan, pemeliharaan, dan pemusnahan. Laporan-laporan yang disajikan berbentuk tabel dan grafik yang menyatakan kinerja keuangan dan diukur sesuai dengan standar 6.2. BAN-PT. Sistem informasi sarana dan prasarana ini, juga terintegrasi dengan SISFOKAMPUS 4.1 yang merupakan sistem informasi akademik open source yang berbasis web. Hasil dari penelitian ini adalah sistem informasi sarana dan prasarana dengan fungsi khusus yaitu menilai kinerja keuangan yang sesuai dengan standar 6.1. BAN-PT yang dapat digunakan untuk melakukan audit internal.   Kata kunci : standar 6.2. BAN-PT, Sistem Informasi Sarana dan Prasarana, SISFOKAMPUS 4.1.

IMPLEMENTASI SISTEM PENJAMINAN MUTU INTERNAL SEBAGAI UPAYA MENINGKATKAN MUTU PENDIDIKAN DI UNIVERSITAS GADJAH MADA

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Ahmad Sulaiman

2016-04-01

Full Text Available Penelitian ini bertujuan untuk menggambarkan implementasi Sistem Penjaminan Mutu Internal (SPMI sebagai upaya meningkatkan mutu pendidikan di Universitas Gadjah Mada. Studi ini merupakan penelitian kualitatif dengan metode studi kasus. Penelitian dilakukan di Universitas Gadjah Mada, dengan subjek Kantor Jaminan Mutu (KJM UGM. Teknik pengumpulan data: observasi langsung, penelusuran dokumen dan arsip, serta wawancara. Hasil penelitian menunjukkan: (1 Kebijakan dan konsep SPMI berupa dokumen akademik dan dokumen mutu disusun oleh KJM UGM; (2 KJM UGM sebagai koordinator dalam merencanakan dan melaksanakan SPMI di seluruh universitas; (3 Implementasi SPMI dilaksanakan dengan penyusunan rancangan berupa Siklus SPMI; (4 Kendala yang dihadapi: komitmen pimpinan, jumlah tenaga auditor, kegiatan SPMI menjadi rutinitas; (5 Langkah yang ditempuh: menyediakan tenaga expert penjaminan mutu, pelatihan auditor, membangun semangat penjaminan mutu; (6 Evaluasi Implementasi SPMI dilaksanakan setiap tahun; (7 Pemanfaatan hasil implementasi SPMI: membangun budaya mutu, akreditasi dan sertifikasi nasional dan internasional; dan (8 Pengembangan implementasi SPMI mengacu pada manajemen mutu ISO dan standar BAN PT.

Possible effects of basel III accord on Turkish banking system

OpenAIRE

Çölgezen, Petek

2013-01-01

138 pages Bu tez Basel Komitesinin Basel I ve Basel II uzlaşılarında görülen eksiklikleri gidermek için Basel III Uzlaşısı adı altında getirdiği yeni düzenlemelere, uygulanmış olan uzlaşıların Türkiye ve bütün dünyada yarattığı pozitif ve negatif etkilere ve henüz uygulanmamış olan Basel III Uzlaşısının olası etkilerine değinmek amacıyla hazırlanmıştır. Bu amaçla akademik araştırma yapılarak Basel I, Basel II, Basel 2.5 ve Basel III uzlaşılarının temel kuralları ve hedefleri ayrıntılı b...

Rekayasa Perangkat Lunak Berbasis Android Sebagai Media Informasi Akademik Siswa SMK PKP 2 Jakarta

Directory of Open Access Journals (Sweden)

Forkas Tiroy Santos Butarbutar

2017-11-01

Full Text Available In the context of human resource development education is a business that is consciously directed to develop the potential of young people to have the ability, skills, attitude and personality. Information services in education that can be directly accessed by students will certainly have a very positive impact for educational institutions in the midst of intense competition. The problem of limited access to academic information systems that require users to become statically accessed by the Internet causes the need to design an academic information system application that is able to meet the flexibility needs of the users to be able to access more easily and quickly, in this case through a smartphone device that is currently very widely used because of its fairly affordable price and service facilities are quite promising. Aware of all that, an initiative to actively participate in building an application based information system based on android mobile in SMK PKP 2 Jakarta in informing academic students. It is expected that the information system can be accessed anytime and anywhere. Applications can be used by students to view payment information, student grades and student attendance, student profiles and students extracurricular activities. Methods Research and Development and Waterfall Model is a method used to develop software in this research.

DAMPAK PENERAPAN SMM ISO 9001:2000 TERHADAP KUALITAS LAYANAN AKADEMIK DAN LULUSAN FT UNY

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Sugiyono Sugiyono

2015-02-01

Full Text Available ABSTRACT This research aims at revealing the impact of the implimentation of ISO 9001:2000 towards the academic service quality (the service quality of lecturers, staffs, technicians, and department orginizer and the graduates’ quality (GPA and period of study. This evaluation was conducted by using descriptive research method and document analysis to reveal the fact of academic service beforeand after the implementation of ISO 9001:2000. The sample technique was using cluster sampling technique as PTM and PTTB departments were chosen. The target sample was 83 students in the seventh semestser and the dacuments in ISO secretariat from those two deperatments. Data collection techniques were using questionnaire and documentation (syallabus and lesson plan, yusisum data, learning evaluation, attandence list and assessement document. Data analysis method was using quatitive descriptive analysis. The findings showed the mean scores of acedemic sevice quality in PTBB Department had been fulfilling the expectation (3,12 while for PTM can be categorized as moderate level (2.97. The lowest score was found in the area of academic administration service, i.e. 3,02 for PTBB and 2,83 for PTM. Furthermore, it was found that The quality of PTBB graduates improved 0,02 and the period of study for (S1/ Bachelor degree fluctuated in 5,16 while the GPA of PTM was not stable yet but the students had shorter period of study. By seeing the findings, it can concluded that the implementation of ISO 9001-2000 was able to improve the administration service of academic but it did not guarantee to create qualified acadmic service to support the fulfilment of high GPA and short period of study. Keywords: graduates’ quality, SMM-ISO 9001-2000, quality of academic service

FAKTOR-FAKTOR PENENTU PENGAMBILAN KEPUTUSAN PEMILIHAN MAYOR MAHASISWA S1 TAHUN AKADEMIK 2005/2006

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Megawati Simanjuntak

2008-01-01

Full Text Available In determining major choosing, students as consumers were influenced by internal and external factors. The aimed of this research was to study the determinant factors in decision making of undergraduate students academicyear 2005/2006. The research was conducted in Bogor Agricultural University (IPB Dramaga, Bogor since May to November 2006 by using one time cross sectional study. Sampling technique used was stratified random sampling with 331 samples. Data were collected by using questionnaire as a guide. Most of samples had determined their major since they entered IPB. Alumni job prospect was the first information they looked when read major’s information. For most samples, open house and promotion activities in Graduate Square influenced their major decision making. In addition, self interest (66.6% and alumni job prospect (53.2% influenced major decision making. This time, most samples (61.9% had first major choosing and according to them the major suited their desire (74.0%. Logistic regression showed that samples with cumulative grade index > 2.75 had opportunity 3.5 times to obtain major suited to their desire compare with samples with cumulative grade index < 2.75. Major determine based on self interest had opportunity 1.467 times to obtain major suit to their desire compare with samples not based on self interest. The active seeking information samples had opportunity 1.489 times to obtain major suited their desire compare with passive seeking information samples.

Dampak Efikasi Diri terhadap Beban Kognitif dalam Pembelajaran Matematika dengan Emosi Akademik sebagai Mediator

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Sunawan

2017-04-01

Full Text Available The purpose of present study was to identify the role of academic emotions in mediating the correlation between self-efficacy and cognitive load in mathematics learning. Four hundred and eighty-seven high school students (191 boys and 296 girls were involved in the correlational study. Structural equation modelling, in particular mediation analysis, was applied to identify the mediation effect of academic emotions. The results showed that self- efficacy predicted academic emotions (namely enjoyment, anger, and boredom directly, but anxiety indirectly. Then, academic emotions predicted cognitive load: extraneous load was predicted by enjoyment, anger, and boredom; intrinsic load was predicted by enjoyment and anxiety; whereas germane load was only predicted by enjoyment. Enjoyment negatively mediated self-efficacy with extraneous load, but positively mediated self-efficacy with intrinsic and germane load. Anger negatively mediated self-efficacy with extraneous load. Boredom negatively mediated extraneous and intrinsic load. Findings of present study clarify the role of academic emotions on cognitive performance, particularly cognitive load.

Supervisi Akademik Kepala Sekolah dalam Meningkatkan Profesional Guru di SMA Negeri 1 Blang Pidie

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Jalisal Efendi, Murniati AR, Bahrun

2016-07-01

Full Text Available Academic supervision conducted by the principal is one of the factors affecting the increase in the quality of education in schools. To realize the improvement of the quality of education, the principal requires good planning in developing supervision programs to improve the professionalism of teachers. The purpose of this study was a to determine the ability of the principal in planning supervision, a strategy principals carry out supervision, c policy principals in following up the results of supervision, d the factors supporting and inhibiting supervision, and e the achievement of academic supervision that conducted by the principal. This research uses descriptive method with qualitative approach. Data was collected through interviews, observation, and documentation. The subjects were teachers at SMAN 1 Blang Pidie, Aceh Barat Daya. The results showed: (1 Planning supervision carried out by the school principal has been running optimally, the principal who made planning supervision. (2 technical-tiknik implementation of academic supervision carried out by the school head has been systematically and have a plan so that teachers feel their support of principals in improving the quality of learning. (3 Follow-up of the supervision is done by noting the deficiencies in the current classroom observation, calling the teacher personally, and discuss the results with the teacher council meeting. (4 The inhibiting factors include the competence of the academic supervision head of the lower school, while the other supporting factors principals and teachers have the commitment, motivation, and a sense of family that performs implementation of academic supervision already achieved effectively despite some shortcomings in carrying out academic supervision is very assist teachers in improving and increasing the quality of teaching.

Gambaran Kualitas Tidur pada Mahasiswa Fakultas Kedokteran Universitas Sumatera Utara Tahun Akademik 2013/2014

OpenAIRE

Fauzan, Rivhan

2015-01-01

People spend a third of their time to sleep which sleeping is an essential requirement for their life. The previous study in various countries reported high prevalence of poor sleep quality on medical student and can impact on their general health and academic performance. The aim of this study is to describe sleep quality on the students of the Faculty of Medicine USU academic year 2013/2014. This was a descriptive research method with a cross-sectional approach. Samplin...

PENGARUH PERILAKU TIDAK JUJUR DAN KOMPETENSI MORAL TERHADAP KECURANGAN AKADEMIK (ACADEMIC FRAUD MAHASISWA AKUNTANSI

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Dyon Santoso

2017-02-01

Full Text Available The objectives of this research is to analyze and provide empirical proves about the influences of dishonesty behavior dan moral competence towards academic fraud of accounting students. The variable used in the research are dishonesty behavior and moral competence. The population of the research is the accounting students from Trisakti University, Bina Nusantara University, and Indonesia Banking School. 242 respondents has been involved as sampels in the research. Data used in the research consist of primary data collected using a questionaire.  Multiple regression analysis will be used in the data analysis to test the hypotheses, and the data will be tested using the 20 version of SPSS The result of the test shows us that dishonesty behavior is proven to have an effect on the academic fraud of accounting students. While moral competence has not shown an effect on the academic fraud of accounting students. Key words : Dishonesty Behavior, Moral Competence, Academic Fraud

Analisis Komparatif Pelayanan Akademik Pada Fakultas Ekonomi Dan Fakultas ISIP Universitas Jenderal Achmad Yani

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Nita Yura Roslina

2015-10-01

Full Text Available Upgrading of skills as well as knowledge to make a new generation of high quality to be able to pursue and develop science and technology are regarded as a catalyst of economic progress that will improve people's welfare. Therefore, the college has an ethical responsibility to the quality of its graduates as work ability, creativity, community recognition as an absorber of human resources towards credibility. Private universities are faced with tight competition and should do anticipate to explore and improve all aspects of service that are owned, including in terms of academic services. Academic services can be interpreted as an attempt by the college to provide facilities to meet the needs of students in matters related to academic activities. This study aims to find out, observe, assess and analyze whether there are significant differences anatara academic services students of the Faculty of Economics and the Faculty of Social and Political Sciences University General Achmad Yani. In this study took a sample of 149 students of the Faculty of Economics and 143 students from the Faculty of Social and Political Sciences Unjani.The method of analysis used to answer the hypothesis is to use parametric statistics that comparative analysis with t test (t-test. The results of his research is the average score of students of the Faculty of Economics Unjani to attribute academic services at 73.7% (relatively high compared to the average score of students of the Faculty of Social and Political Sciences of the attributes of academic services amounted to 72.6% (high enough. The difference score of 1.2% illustrate the difference. Results of calculation with the formula t-test separated sample variance relation is independent (uncorrelated and the second variant sample is not homogeneous, known F count larger than F table (1.3> 1,271. Based on calculations by comparing t arithmetic with t table known that t t table amounted to -1.79 -0.7047 with a standard error of 7.5% (0.075, thus there are significant differences on the attributes of academic services between the students of the Faculty of Economics with the students of the Faculty of Social Sciences and Political University General Achmad Yani.

ANALISIS KONSEP INTERAKSI MANUSIA DAN KOMPUTER PADA ANTARMUKA SISTEM INFORMASI AKADEMIK UNIVERSITAS MUHAMMADIYAH PONOROGO

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Desriyanti .

2017-08-01

Full Text Available Academic Information System Students is an existing system, where student academic activities will be recorded in the system from the first semester until the last semester. This study aims to obtain a description of the quality of the interface, knowing the criteria  to the user in accordance with the various dialogues and concepts of human and computer interaction on the interface of a student academic information system. The methods used are observation, documentation, and the questionnaire which is analyzed SPSS. In order to have a deep discussion, variable groupings are done through the validation test table variable r product moment person with df (degree of freedom. For the results of the scores for each respondent can be seen in the table results of the calculation of all respondents. Thus, test One Sample t test If Sig> 0.05 then Ho accepted If Sig <0.05 then Ho is rejected. From the test One Sample t test shows Sig = 0.000, then Sig <0.05 which means Ho rejected. So, from the One Sample T test, it is indicated that “the application of the concept of human and computer interaction on the interface in the academic information has done well.

ANALISIS KONSEP INTERAKSI MANUSIA DAN KOMPUTER PADA ANTARMUKA SISTEM INFORMASI AKADEMIK UNIVERSITAS MUHAMMADIYAH PONOROGO

OpenAIRE

Desriyanti .

2017-01-01

Academic Information System Students is an existing system, where student academic activities will be recorded in the system from the first semester until the last semester. This study aims to obtain a description of the quality of the interface, knowing the criteria  to the user in accordance with the various dialogues and concepts of human and computer interaction on the interface of a student academic information system. The methods used are observation, documentation, and the questionnair...

Rancang Bangun Sistem Informasi Akademik Berbasis Web ( studi kasus: SMA Swasta Harapan I Medan

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Haida Dafitri, Marina Elsera

2017-10-01

Full Text Available Submission of academic information to students, parents / guardians conducted at private high school SMA Harapan I Medan are still very ineffective and efficient both in terms of delivery time and in terms of finance. This is because the academic delivery is still manual in oral, written or via phone or SMS one by one. The impact of the process is the slow process of delivering academic information and the amount of expenditure in the delivery of information. To overcome these problems, then the academic community wants to improve the delivery of academic information systems using computerized technology. The purpose of the change is by building a School of Academic Information System (SISFO Web-based SCRUM model. The system is built to produce academic information such as value and achievement of students in web-based schools that can be utilized by the academic staff to make it easier in conveying academic information to students, parents / guardians. This system includes and through several aspects of functionality, reliability, efficiency, and usability. And the scrum model used in the design of this system has a framework for building, developing and managing an ever-changing product. Keywords: Information , Academic, Scrum Model, Web

Rancang Bangun Sistem Informasi Akademik Pada Smk Bina Nusa Wisata Tangerang Menggunakan Model Waterfall

OpenAIRE

Musyaffa, Nu’man

2017-01-01

Information technology brings changes to the process flow of information very quickly, practical and dynamic. The condition is a tendency to use information technology. One is the Academic Information System which is an application designed and created and applied to process all the data related to the academic information such as school information, student data, employee data, and other academic activities. With the academic information system has been change notification process informatio...

Kualitas Pelayanan Administrasi Akademik dan Resistensi Mahasiswa Program Studi Teknik Komputer Kontrol Politeknik Madiun

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Fredy Susanto

2015-07-01

Full Text Available The purposes of this study are: (1 to determine the characteristics of academic administrative (2 to know the description of academic and administrative services and the student resistances. The study is a descriptive qualitative. It is conducted at the Computer Control Engineering Program of Polytechnic Madiun. The respondents in this study are the Chairman, staff, and students of Computer Control Engineering Program. The main data collection tools by means of interviews and documentation. It was developed by the researcher himself and validity tested by triangulation techniques. The results of this study concluded: 1 control program engineering studies led by the chief together with the secretary program, and assisted by the administrative staff. The academic administrations are student planning card, attendance list, class scheduling, semester reporting, the final semester result reporting, and final project schedule, 2 generally the academic administrative services do not fulfill the students satisfactory, such as administrative room less extensive, administrative officer less responsive in providing some services and not in line with a predetermined schedule, but the level of student resistance remains high.

Наблюдения върху лексикалната вариативност при библейските цитати в Йоан-Екзарховия превод на De Fide Orthodoxa

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Татяна [Tatiana] Илиева [Ilieva

2016-10-01

Full Text Available Observations on the theological terminology in the biblical quotations in John the Exarch’s translation of De Fide Orthodoxa The paper presented here aims at comparing the theological terms as used, on the one hand, in the biblical quotations in John the Exarch’s translation of De fide orthodoxa and, on the other, in the Old Bulgarian (Grigirovich Prophetologion, Codex Marianus, Codex Zographiensis, Sinai Psalter, Enina Apostolos as well as in some Middle Bulgarian (Bologna Psalter, Karpinski Apostolos, Ohridski Apostolos Old Russian (Mstislav Gospels, Yurievski Gospels, Pogodinov Psalter, Chudov Psalter, Tolstoev Apostolos, Hristinopol Apostolos and Old Serbia (Shishatovatski Apostolos, Matich Apostolos monuments. Also taken in consideration are the respective parts in certain theological writings associated with the Preslav Literary Centre.   Uwagi o terminologii teologicznej w cytatach z Biblii w przekładzie De Fide Orthodoxa Jana Egzarchy Celem artykułu jest porównanie terminologii teologicznej w cytatach biblijnych w przekładzie De fide othodoxa Jana Egzarchy, w starobułgarskich zabytkach językowych (Lekcjonarz Grigorowizca, Kodeks Mariański, Kodeks Zografski, Psałterz Synajski, Apostoł Eniński, w wybranych zabytkach średniobułgarskich (Psałterz Boloński, Apostoł Karpinski, Apostoł Ohrydzki, staroruskich (Ewangeliarz Mścisława, Ewangeliarz Jurjewski, Psałterz Pogodina, Psałterz Chłudowa, Apostoł Tołstoja, Apostoł Krystynopolski i staroserbskich (Apostoł Sziszatowacki, Apostoł Maticia. Analizie poddano także poszczególne części wybranych pism teologicznych powstałych w presławskiej szkole piśmienniczej.

Inflationary Quasiparticle Creation and Thermalization Dynamics in Coupled Bose-Einstein Condensates.

Science.gov (United States)

Posazhennikova, Anna; Trujillo-Martinez, Mauricio; Kroha, Johann

2016-06-03

A Bose gas in a double-well potential, exhibiting a true Bose-Einstein condensate (BEC) amplitude and initially performing Josephson oscillations, is a prototype of an isolated, nonequilibrium many-body system. We investigate the quasiparticle (QP) creation and thermalization dynamics of this system by solving the time-dependent Keldysh-Bogoliubov equations. We find avalanchelike QP creation due to a parametric resonance between BEC and QP oscillations, followed by slow, exponential relaxation to a thermal state at an elevated temperature, controlled by the initial excitation energy of the oscillating BEC above its ground state. The crossover between the two regimes occurs because of an effective decoupling of the QP and BEC oscillations. This dynamics is analogous to elementary particle creation in models of the early universe. The thermalization in our setup occurs because the BEC acts as a grand canonical reservoir for the quasiparticle system.

On the derivation of quasi-classical equations for superconductors or 3He

International Nuclear Information System (INIS)

Shelankov, A.L.

1984-11-01

We present a method for the derivation of the quasi-classical equations for Keldysh Green function of a superconductor or superfluid 3 He. It is shown that Green functions on the classical trajectories g(Y 1 ,Y 2 ) which depend on two trajectory coordinates y 1 and y 2 , give the full description of the system within quasi-classical accuracy. The equation of motion for g(y 1 ,y 2 ) is obtained. it is shown that g(y)=g(y+0,y)+g(y-0,y) is equal to the Green function in momentum space integrated with respect to xi=vsub(F)(p-psub(F)). The normalization condition (g(y)) 2 =1 is proved in a direct manner using the properties of g(y 1 ,y 2 ) with y 1 not=Y 2 . The different methods of introducing the distribution function are discussed. (orig.)

Two-color Fermi-liquid theory for transport through a multilevel Kondo impurity

Science.gov (United States)

Karki, D. B.; Mora, Christophe; von Delft, Jan; Kiselev, Mikhail N.

2018-05-01

We consider a quantum dot with K ≥2 orbital levels occupied by two electrons connected to two electric terminals. The generic model is given by a multilevel Anderson Hamiltonian. The weak-coupling theory at the particle-hole symmetric point is governed by a two-channel S =1 Kondo model characterized by intrinsic channels asymmetry. Based on a conformal field theory approach we derived an effective Hamiltonian at a strong-coupling fixed point. The Hamiltonian capturing the low-energy physics of a two-stage Kondo screening represents the quantum impurity by a two-color local Fermi liquid. Using nonequilibrium (Keldysh) perturbation theory around the strong-coupling fixed point we analyze the transport properties of the model at finite temperature, Zeeman magnetic field, and source-drain voltage applied across the quantum dot. We compute the Fermi-liquid transport constants and discuss different universality classes associated with emergent symmetries.

Studying the universality of field induced tunnel ionization times via high-order harmonic spectroscopy

International Nuclear Information System (INIS)

Soifer, H; Bruner, B D; Dudovich, N; Negro, M; Devetta, M; Vozzi, C; Faccialà, D; Silvestri, S de; Stagira, S

2014-01-01

High-harmonic generation spectroscopy is a promising tool for resolving electron dynamics and structure in atomic and molecular systems. This scheme, commonly described by the strong field approximation, requires a deep insight into the basic mechanism that leads to the harmonic generation. Recently, we have demonstrated the ability to resolve the first stage of the process—field induced tunnel ionization—by adding a weak perturbation to the strong fundamental field. Here we generalize this approach and show that the assumptions behind the strong field approximation are valid over a wide range of tunnel ionization conditions. Performing a systematic study—modifying the fundamental wavelength, intensity and atomic system—we observed a good agreement with quantum path analysis over a range of Keldysh parameters. The generality of this scheme opens new perspectives in high harmonics spectroscopy, holding the potential of probing large, complex molecular systems. (paper)

Multiple exciton generation in chiral carbon nanotubes: Density functional theory based computation

Science.gov (United States)

Kryjevski, Andrei; Mihaylov, Deyan; Kilina, Svetlana; Kilin, Dmitri

2017-10-01

We use a Boltzmann transport equation (BE) to study time evolution of a photo-excited state in a nanoparticle including phonon-mediated exciton relaxation and the multiple exciton generation (MEG) processes, such as exciton-to-biexciton multiplication and biexciton-to-exciton recombination. BE collision integrals are computed using Kadanoff-Baym-Keldysh many-body perturbation theory based on density functional theory simulations, including exciton effects. We compute internal quantum efficiency (QE), which is the number of excitons generated from an absorbed photon in the course of the relaxation. We apply this approach to chiral single-wall carbon nanotubes (SWCNTs), such as (6,2) and (6,5). We predict efficient MEG in the (6,2) and (6,5) SWCNTs within the solar spectrum range starting at the 2Eg energy threshold and with QE reaching ˜1.6 at about 3Eg, where Eg is the electronic gap.

Out-of-equilibrium catalysis of chemical reactions by electronic tunnel currents.

Science.gov (United States)

Dzhioev, Alan A; Kosov, Daniel S; von Oppen, Felix

2013-04-07

We present an escape rate theory for current-induced chemical reactions. We use Keldysh nonequilibrium Green's functions to derive a Langevin equation for the reaction coordinate. Due to the out of equilibrium electronic degrees of freedom, the friction, noise, and effective temperature in the Langevin equation depend locally on the reaction coordinate. As an example, we consider the dissociation of diatomic molecules induced by the electronic current from a scanning tunnelling microscope tip. In the resonant tunnelling regime, the molecular dissociation involves two processes which are intricately interconnected: a modification of the potential energy barrier and heating of the molecule. The decrease of the molecular barrier (i.e., the current induced catalytic reduction of the barrier) accompanied by the appearance of the effective, reaction-coordinate-dependent temperature is an alternative mechanism for current-induced chemical reactions, which is distinctly different from the usual paradigm of pumping vibrational degrees of freedom.

Inflationary Quasiparticle Creation and Thermalization Dynamics in Coupled Bose-Einstein Condensates

Science.gov (United States)

Posazhennikova, Anna; Trujillo-Martinez, Mauricio; Kroha, Johann

2016-06-01

A Bose gas in a double-well potential, exhibiting a true Bose-Einstein condensate (BEC) amplitude and initially performing Josephson oscillations, is a prototype of an isolated, nonequilibrium many-body system. We investigate the quasiparticle (QP) creation and thermalization dynamics of this system by solving the time-dependent Keldysh-Bogoliubov equations. We find avalanchelike QP creation due to a parametric resonance between BEC and QP oscillations, followed by slow, exponential relaxation to a thermal state at an elevated temperature, controlled by the initial excitation energy of the oscillating BEC above its ground state. The crossover between the two regimes occurs because of an effective decoupling of the QP and BEC oscillations. This dynamics is analogous to elementary particle creation in models of the early universe. The thermalization in our setup occurs because the BEC acts as a grand canonical reservoir for the quasiparticle system.

Quantum theory of many-body systems techniques and applications

CERN Document Server

Zagoskin, Alexandre

2014-01-01

This text presents a self-contained treatment of the physics of many-body systems from the point of view of condensed matter. The approach, quite traditionally, uses the mathematical formalism of quasiparticles and Green’s functions. In particular, it covers all the important diagram techniques for normal and superconducting systems, including the zero-temperature perturbation theory and the Matsubara, Keldysh and Nambu-Gor'kov formalism, as well as an introduction to Feynman path integrals. This new edition contains an introduction to the methods of theory of one-dimensional systems (bosonization and conformal field theory) and their applications to many-body problems.   Intended for graduate students in physics and related fields, the aim is not to be exhaustive, but to present enough detail to enable the student to follow the current research literature, or to apply the techniques to new problems. Many of the examples are drawn from mesoscopic physics, which deals with systems small enough that quantum...

Hydrostatic pressure of the O(N) φ4 theory in the large N limit

International Nuclear Information System (INIS)

Jizba, Petr

2004-01-01

With nonequilibrium applications in mind we present in this paper (the first in a series of three) a self-contained calculation of the hydrostatic pressure of the O(N) λφ 4 theory at finite temperature. By combining the Keldysh-Schwinger closed-time path formalism with thermal Dyson-Schwinger equations we compute in the large N limit the hydrostatic pressure in a fully resumed form. We also calculate the high-temperature expansion for the pressure (in D=4) using the Mellin transform technique. The result obtained extends the results found by Drummond et al. [Nucl. Phys. B524, 579 (1998)] and Amelino-Camelia and Pi [Phys. Rev. D 47, 2356 (1993)]. The latter are reproduced in the limits m r (0)→0, T→∞, and T→∞, respectively. Important issues of renormalizibility of composite operators at finite temperature are addressed and the improved energy-momentum tensor is constructed. The utility of the hydrostatic pressure in the nonequilibrium quantum systems is discussed

Introduction to the spectral theory of polynomial operator pencils

CERN Document Server

Markus, A S

1988-01-01

This monograph contains an exposition of the foundations of the spectral theory of polynomial operator pencils acting in a Hilbert space. Spectral problems for polynomial pencils have attracted a steady interest in the last 35 years, mainly because they arise naturally in such diverse areas of mathematical physics as differential equations and boundary value problems, controllable systems, the theory of oscillations and waves, elasticity theory, and hydromechanics. In this book, the author devotes most of his attention to the fundamental results of Keldysh on multiple completeness of the eigenvectors and associate vectors of a pencil, and on the asymptotic behavior of its eigenvalues and generalizations of these results. The author also presents various theorems on spectral factorization of pencils which grew out of known results of M. G. Kreibreven and Heinz Langer. A large portion of the book involves the theory of selfadjoint pencils, an area having numerous applications. Intended for mathematicians, resea...

Nonlinear and Nonequilibrium Spin Injection in Magnetic Tunneling Junctions

Science.gov (United States)

Guo, Hong

2007-03-01

Quantitative analysis of charge and spin quantum transport in spintronic devices requires an atomistic first principles approach that can handle nonlinear and nonequilibrium transport conditions. We have developed an approach for this purpose based on real space density functional theory (DFT) carried out within the Keldysh nonequilibrium Green's function formalism (NEGF). We report theoretical analysis of nonlinear and nonequilibrium spin injection and quantum transport in Fe/MgO/Fe trilayer structures as a function of external bias voltage. Devices with well relaxed atomic structures and with FeO oxidization layers are investigated as a function of external bias voltage. We also report calculations of nonequilibrium spin injection into molecular layers and graphene. Comparisons to experimental data will be presented. Work in collaborations with: Derek Waldron, Vladimir Timochevski (McGill University); Ke Xia (Institute of Physics, Chinese Academy of Science, Beijing, China); Eric Zhu, Jian Wang (University of Hong Kong); Paul Haney, and Allan MacDonald (University of Texas at Austin).

Deriving covariant holographic entanglement

Energy Technology Data Exchange (ETDEWEB)

Dong, Xi [School of Natural Sciences, Institute for Advanced Study, Princeton, NJ 08540 (United States); Lewkowycz, Aitor [Jadwin Hall, Princeton University, Princeton, NJ 08544 (United States); Rangamani, Mukund [Center for Quantum Mathematics and Physics (QMAP), Department of Physics, University of California, Davis, CA 95616 (United States)

2016-11-07

We provide a gravitational argument in favour of the covariant holographic entanglement entropy proposal. In general time-dependent states, the proposal asserts that the entanglement entropy of a region in the boundary field theory is given by a quarter of the area of a bulk extremal surface in Planck units. The main element of our discussion is an implementation of an appropriate Schwinger-Keldysh contour to obtain the reduced density matrix (and its powers) of a given region, as is relevant for the replica construction. We map this contour into the bulk gravitational theory, and argue that the saddle point solutions of these replica geometries lead to a consistent prescription for computing the field theory Rényi entropies. In the limiting case where the replica index is taken to unity, a local analysis suffices to show that these saddles lead to the extremal surfaces of interest. We also comment on various properties of holographic entanglement that follow from this construction.

Introduction to the nonequilibrium functional renormalization group

International Nuclear Information System (INIS)

Berges, J.; Mesterházy, D.

2012-01-01

In these lectures we introduce the functional renormalization group out of equilibrium. While in thermal equilibrium typically a Euclidean formulation is adequate, nonequilibrium properties require real-time descriptions. For quantum systems specified by a given density matrix at initial time, a generating functional for real-time correlation functions can be written down using the Schwinger-Keldysh closed time path. This can be used to construct a nonequilibrium functional renormalization group along similar lines as for Euclidean field theories in thermal equilibrium. Important differences include the absence of a fluctuation-dissipation relation for general out-of-equilibrium situations. The nonequilibrium renormalization group takes on a particularly simple form at a fixed point, where the corresponding scale-invariant system becomes independent of the details of the initial density matrix. We discuss some basic examples, for which we derive a hierarchy of fixed point solutions with increasing complexity from vacuum and thermal equilibrium to nonequilibrium. The latter solutions are then associated to the phenomenon of turbulence in quantum field theory.

Kubo formulas for the shear and bulk viscosity relaxation times and the scalar field theory shear τπ calculation

Science.gov (United States)

Czajka, Alina; Jeon, Sangyong

2017-06-01

In this paper we provide a quantum field theoretical study on the shear and bulk relaxation times. First, we find Kubo formulas for the shear and the bulk relaxation times, respectively. They are found by examining response functions of the stress-energy tensor. We use general properties of correlation functions and the gravitational Ward identity to parametrize analytical structures of the Green functions describing both sound and diffusion mode. We find that the hydrodynamic limits of the real parts of the respective energy-momentum tensor correlation functions provide us with the method of computing both the shear and bulk viscosity relaxation times. Next, we calculate the shear viscosity relaxation time using the diagrammatic approach in the Keldysh basis for the massless λ ϕ4 theory. We derive a respective integral equation which enables us to compute η τπ and then we extract the shear relaxation time. The relaxation time is shown to be inversely related to the thermal width as it should be.

Microwave-mediated heat transport in a quantum dot attached to leads

International Nuclear Information System (INIS)

Chi Feng; Dubi, Yonatan

2012-01-01

The thermoelectric effect in a quantum dot (QD) attached to two leads in the presence of microwave fields is studied by using the Keldysh nonequilibrium Green function technique. When the microwave is applied only on the QD and in the linear response regime, the main peaks in the thermoelectric figure of merit and the thermopower are found to decrease, with the emergence of a set of photon-induced peaks. Under this condition the microwave field cannot generate heat current or electrical bias voltage. Surprisingly, when the microwave field is applied only to one (bright) lead and not to the other (dark) lead or the QD, heat flows mostly from the dark to the bright lead, almost irrespective of the direction of the thermal gradient. We attribute this effect to microwave-induced opening of additional transport channels below the Fermi energy. The microwave field can change both the magnitude and the sign of the electrical bias voltage induced by the temperature gradient. (paper)

Aspects of Nonlocality in Quantum Field Theory, Quantum Gravity and Cosmology

CERN Document Server

Barvinsky, A O

2015-01-01

This paper contains a collection of essays on nonlocal phenomena in quantum field theory, gravity and cosmology. Mechanisms of nonlocal contributions to the quantum effective action are discussed within the covariant perturbation expansion in field strengths and spacetime curvatures and the nonperturbative method based on the late time asymptotics of the heat kernel. Euclidean version of the Schwinger-Keldysh technique for quantum expectation values is presented as a special rule of obtaining the nonlocal effective equations of motion for the mean quantum field from the Euclidean effective action. This rule is applied to a new model of ghost free nonlocal cosmology which can generate the de Sitter stage of cosmological evolution at an arbitrary value of $\\varLambda$ -- a model of dark energy with its scale played by the dynamical variable that can be fixed by a kind of a scaling symmetry breaking mechanism. This model is shown to interpolate between the superhorizon phase of gravity theory mediated by a scala...

Back-reaction beyond the mean field approximation

International Nuclear Information System (INIS)

Kluger, Y.

1993-01-01

A method for solving an initial value problem of a closed system consisting of an electromagnetic mean field and its quantum fluctuations coupled to fermions is presented. By tailoring the large N f expansion method to the Schwinger-Keldysh closed time path (CTP) formulation of the quantum effective action, causality of the resulting equations of motion is ensured, and a systematic energy conserving and gauge invariant expansion about the electromagnetic mean field in powers of 1/N f is developed. The resulting equations may be used to study the quantum nonequilibrium effects of pair creation in strong electric fields and the scattering and transport processes of a relativistic e + e - plasma. Using the Bjorken ansatz of boost invariance initial conditions in which the initial electric mean field depends on the proper time only, we show numerical results for the case in which the N f expansion is truncated in the lowest order, and compare them with those of a phenomenological transport equation

Ionization of a multilevel atom by ultrashort laser pulses

International Nuclear Information System (INIS)

Andreev, A. V.; Stremoukhov, S. Yu.; Shutova, O. A.

2010-01-01

Specific features of ionization of single atoms by laser fields of a near-atomic strength are investigated. Calculations are performed for silver atoms interacting with femtosecond laser pulses with wavelengths λ = 800 nm (Ti:Sapphire) and λ = 1.064 μm (Nd:YAG). The dependences of the probability of ionization and of the form of the photoelectron energy spectra on the field of laser pulses for various values of their duration are considered. It is shown that the behavior of the probability of ionization in the range of subatomic laser pulse fields is in good agreement with the Keldysh formula. However, when the field strength attains values close to the atomic field strength, the discrepancies in these dependences manifested in a decrease in the ionization rate (ionization stabilization effect) or in its increase (accelerated ionization) are observed. These discrepancies are associated with the dependence of the population dynamics of excited discrete energy levels of the atom on the laser pulse field amplitude.

Trions in bulk and monolayer materials: Faddeev equations and hyperspherical harmonics.

Science.gov (United States)

Filikhin, I; Kezerashvili, R Ya; Tsiklauri, Sh M; Vlahovic, B

2018-03-23

The negatively T - and positively T + charged trions in bulk and monolayer semiconductors are studied in the effective mass approximation within the framework of a potential model. The binding energies of trions in various semiconductors are calculated by employing the Faddeev equation with the Coulomb potential in 3D configuration space. Results of calculations of the binding energies for T - are consistent with previous computational studies, while the T + is unbound for all considered cases. The binding energies of trions in monolayer semiconductors are calculated using the method of hyperspherical harmonics by employing the Keldysh potential. It is shown that 2D T - and T + trions are bound and the binding energy of the positive trion is always greater than for the negative trion due to the heavier effective mass of holes. Our calculations demonstrate that screening effects play an important role in the formation of bound states of trions in 2D semiconductors.

Quantum decoherence with holography

International Nuclear Information System (INIS)

Ho, Shih-Hao; Li, Wei; Lin, Feng-Li; Ning, Bo

2014-01-01

Quantum decoherence is the loss of a system’s purity due to its interaction with the surrounding environment. Via the AdS/CFT correspondence, we study how a system decoheres when its environment is a strongly-coupled theory. In the Feynman-Vernon formalism, we compute the influence functional holographically by relating it to the generating function of Schwinger-Keldysh propagators and thereby obtain the dynamics of the system’s density matrix. We present two exactly solvable examples: (1) a straight string in a BTZ black hole and (2) a scalar probe in AdS 5 . We prepare an initial state that mimics Schrödinger’s cat and identify different stages of its decoherence process using the time-scaling behaviors of Rényi entropy. We also relate decoherence to local quantum quenches, and by comparing the time evolution behaviors of the Wigner function and Rényi entropy we demonstrate that the relaxation of local quantum excitations leads to the collapse of its wave-function

Coherent combs in ionization by intense and short laser pulses

Energy Technology Data Exchange (ETDEWEB)

Krajewska, K., E-mail: Katarzyna.Krajewska@fuw.edu.pl [Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warszawa (Poland); Department of Physics and Astronomy, University of Nebraska, Lincoln, NE 68588-0299 (United States); Kamiński, J.Z., E-mail: Jerzy.Kaminski@fuw.edu.pl [Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warszawa (Poland)

2016-03-22

Photoionization of positive ions by a train of intense, short laser pulses is investigated within the relativistic strong field approximation, using the velocity gauge. The formation of broad peak structures in the high-energy domain of photoelectrons is observed and interpreted. The emergence of coherent photoelectron energy combs within these structures is demonstrated, and it is interpreted as the consequence of the Fraunhofer-type interference/diffraction of probability amplitudes of ionization from individual pulses comprising the train. Extensions to the coherent angular combs are also studied, and effects related to the radiation pressure are presented. - Highlights: • We develop relativistic Strong-Field Approximation for ionization by intense and short laser pulses of arbitrary spectral compositions. • We show that the consistent interpretation of results is provided by the Keldysh-type saddle point analysis of probability amplitudes. • We derive a general Fraunhofer-type interference/diffraction formula for finite train of pulses. • We study the coherent combs in photoelectron probability distributions.

POLA PENGASUHAN ISLAMI DALAM PENDIDIKAN KELUARGA (Penguatan Peran Keluarga Jamaah Masjid Baitul Abror Teja Timur

Directory of Open Access Journals (Sweden)

Saiful Hadi

2017-07-01

Full Text Available Pendidikan Islam memiliki varian yang kompleks, tidak hanya pada kegiatan pendidikan formal, dan non formal, akan tetapi juga ada pada pendidikan informal, ketiganya memiliki keterkaitan yang sinergis untuk saling menguatkan, sebagaimana halnya yang terjadi pada ibu-ibu Jamaah masjid Baitul Abror yang putra-putrinya mengikuti pendidikan pra sekolah pada RA. Muslimat NU yang dikelola oleh Ta’mir masjid. Para Ibu jama’ah yang rata-rata tingkat pendidikan rendah, mereka minim pengetahuan, pengalaman dn keterampilan dalam memberikan pengasuhan secara islami, hal tersebut menjadi concern sasaran program pengabdian akademik dalam memberikan penguatan untuk meningkatkan pengetahuan, keterampilan dan afeksi dalam mengasuh pertumbuhan dan perkembangan anak khususnya usia pra sekolah. Program penguatan  yang dikhususkan pada peningkatan pengetahuan dalam mengasuh, praktek pengasuhan dan keterampilan dalam memberikan perlindungan kepada anak, ternyata memberi kontribusi yang signifikan terhadap perolehan ketiga aspek yang diberikan selama mengikuti kegiatan penguatan tersebut. Hal tersebut terlihat pada saat proses kegiatan pengabdian berlangsung seperti tanggapan dan respon tentang materi dan praktek yang dilakukan bersama antara Tim Pengabdian dan pra ibu jama’ah masjid.

PENGARUH REFORMASI PENYUSUNAN ANGGARAN TERHADAP KUALITAS APBD KOTA SEMARANG

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Bestari Dwi Handayani

2012-03-01

Full Text Available Tujuan dari penelitian ini adalah untuk mendapatkan bukti empiris dampak akuntabilitas publik, partisipasi publik, transparansi publik dan pendekatan kinerja APBD terhadap kualitas APBD di Kabupaten Semarang. Sampel dari penelitian ini terdiri dari organisasi non pemerintah, tokoh masyarakat, organisasi publik, institusi akademik, perguruan tinggi dan mass media di Semarang Jawa Tengah. Ada 36 responden yang telah mengembalikan kuesioner. Hasil dari penelitian ini adalah ada dampak akuntabilitas publik, partisipasi publik, transparansi publik dan pendekatan kinerja APBD terhadap kualitas APBD. Abstract This study aims to get the empirical evidence of the effects of public accountability, public participation, public transparency, and APBD performance approach to the quality of APBD in Kabupaten Semarang. The sample of this research consists of Non-Government Organization, public figure, public organization, academic institutions, colleges, and mass media in Semarang, Central Java. The questionnaires were distributed and they are returned back by 60 respondents. The result of study shows that there are effects of public accountability, public participation, public transparency, and APBD performance approach to quality of APBD.

PENGARUH REFORMASI PENYUSUNAN ANGGARAN TERHADAP KUALITAS APBD KOTA SEMARANG

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Bestari Dwi Handayani

2012-03-01

Full Text Available Tujuan dari penelitian ini adalah untuk mendapatkan bukti empiris dampak akuntabilitas publik, partisipasi publik, transparansi publik dan pendekatan kinerja APBD terhadap kualitas APBD di KAbupaten Semarang. Sampel dari penelitian ini terdiri dari organisasi non pemerintah, tokoh masyarakat, organisasi publik, institusi akademik, perguruan tinggi dan mass media di Semarang Jawa Tengah. Ada 36 responden yang telah mengembalikan kuesioner. Hasil dari penelitian ini adalah ada dampak akuntabilitas publik, partisipasi publik, transparansi publik dan pendekatan kinerja APBD terhadap kualitas APBD. AbstractThis study aims to get the empirical evidence of the effects of public accountability, public participation, public transparency, and APBD performance approach to the quality of APBD in Kabupaten Semarang. The sample of this research consists of Non-Government Organization, public figure, public organization, academic institutions, colleges, and mass media in Semarang, Central Java. The questionnaires were distributed and they are returned back by 60 respondents. The result of study shows that there are effects of public accountability, public participation, public transparency, and APBD performance approach to quality of APBD.Keywords: corporate governance; APBD performance; public accountability

Persepsi Mahasiswa Terhadap Plagiat

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Elok Putri Nimasari

2017-12-01

Full Text Available Ketidakjujuran dalam bidang akademik seperti plagiat, banyak terjadi di lingkungan akademisi. Menjiplak hasil tulisan dan ide tanpa mencantumkan referensi kerap ditemukan dalam banyak kasus, tidak hanya di dalam karya ilmiah tetapi juga pada tugas-tugas perkuliahan. Seiring dengan berkembangnya teknologi melalui telepon pintar dan juga jaringan internet yang semakin mudah untuk mengakses informasi, membuat plagiat di lingkungan akademisi juga semakin meningkat. Dengan atau tanpa sadar mahasiswa menjiplak sebuah karya atau ide pemikiran, adalah tanggung jawab sebuah institusi perguruan tinggi untuk memperkenalkan pada mahasiswanya apa itu plagiat, jenis-jenis plagiat, akibat dari perilaku plagiat, bagaimana cara-cara untuk menghindari plagiat dan bagaimana penerapan sangsi untuk yang melakukan plagiat secara konsisten. Penelitian ini bertujuan untuk mengidentifikasi persepsi dan perilaku mahasiswa terhadap plagiat, mengidentifikasi tipe-tipe plagiat, dan menganalisis solusi yang bisa dilakukan untuk mengurangi perilaku plagiat.Pendekatan kualitatif dan kuantitatif dengan menggunakan kuesioner, wawancara, observasi, dan analisis dokumen di aplikasikan dalam studi ini.Obyek dalam penelitian ini merupakan mahasiswa Universitas Muhammadiyah Ponorogo. Sampel populasi menggunakan purposive random sampling.

Effect of 5E Constructivist Learning Model on Students’ Academic Achievement Level in Social Studies Course

OpenAIRE

POLAT, Seyat; BAŞ, Gökhan

2012-01-01

Bu çalışmanın amacı, 5E yapılandırmacı öğrenme modelinin ilköğretim 5. sınıf öğrencilerinin sosyal bilgiler dersindeki akademik başarıları üzerindeki etkisini araştırmaktır. Araştırma 2011–2012 eğitim-öğretim yılında Karaman ilinde bir ilköğretim okulunda gerçekleştirilmiştir. Araştırmaya, bu okulun iki sınıfından toplam 34 beşinci sınıf öğrencisi katılmıştır. Bu çalışmada, ön test-son test / kontrol gruplu araştırma modeli kullanılmıştır. Gruplar arasındaki anlamlılığı test etmek için Mann W...

[The gravity field of the Earth: geophysical factor of gerontology (The Vorobeichikov effect)].

Science.gov (United States)

Shapovalov, S N

2016-01-01

The results of investigations of the growth in vitro of Escherichia coli M-17, obtained in the processing of V. M. Vorobeichikov observational data during the movement of the scientific expedition ship «Akademik Fedorov» from St. Petersburg to Antarctica and back, in the period from 13.11.2002 on 26.05.2003 (48th Russian Antarctic expedition). The findings based on the growth in vitro of Escherichia coli from changes in geographical location on a planetary scale, that doesn't eliminate the dependence of other species of microorganisms from the spatial position in the gravity field of the Earth. It is established that the duration of the lag phase of Escherichia coli in the Equatorial zone close to its duration in the high-latitude zone and Antarctic, however, the duration of the lag phase at the equator and the Antarctic corresponds to the time of the lag phase at the time of the Central phase of the lunar Eclipse. The conclusion about high sensitivity in vitro of Escherichia coli to the field of gravity of the Earth, and to syzigium events.

Pengembangan E-Lecture menggunakan Web Service Sikadu untuk Mendukung Perkuliahan di Universitas Negeri Semarang

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Anggyi Trisnawan Putra

2015-10-01

Full Text Available Proses penjadwalan di Universitas Negeri Semarang yang sedemikian rumit menghasilkan data penjadwalan yang tersimpan di dalam database Sikadu (Sistem Informasi Akademik Terpadu berupa keterkaitan antara data dosen, mahasiswa, dan mata kuliah. Namun, data ini tidak diintegrasikan secara langsung ke dalam aplikasi/sistem e-learning yang disediakan oleh Unnes, mengakibatkan adanya proses/kegiatan yang tidak perlu sebelum dapat menggunakan aplikasi e-learning. Dengan fakta bahwa data penjadwalan dapat diakses secara online, dapat dirancang aplikasi pendukung e-lecture dengan memanfaatkan data tersebut. Pertama-tama, dirancang web service yang akan menyajikan akses aman ke dalam data Sikadu. Lalu, dirancang database e-lecture yang akan memanfaatkan web service yang telah dibuat tersebut. Data akan disajikan dalam interface yang dibuat dengan HTML, bermesin PHP. Dosen dan mahasiswa dapat menggunakan akses login yang sama dengan Sikadu untuk dapat langsung memanfaatkan aplikasi ini. Dengan adanya aplikasi ini, proses perkuliahan meliputi sharing bahan ajar, pemberian tugas/aktivitas kuliah, integrasi pengumpulan tugas, koreksi nilai tugas, pembatasan waktu pengumpulan tugas secara tegas (tersistem dan lain sebagainya dapat dilakukan secara mudah dan efisien. 

STRATEGI PENINGKATAN KUALITAS PENDIDIKAN DI MADRASAH ALIYAH KABUPATEN SIDRAP: Tinjauan Implementasi Kurikulum Tingkat Satuan Pendidikan

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Ali Rahim

2015-12-01

Penelitian ini bertujuan untuk menganalisis strategi peningkatan kualitas pendi-dikan Madrasah Aliyah di Kabupaten Sidrap ditinjau dari segi implementasi ku-rikulum tingkat satuan pendidikan. Jenis penelitian adalah penelitian kualitatif. Metode pengumpulan data adalah; observasi, wawancara, observasi dan penelu-suran referensi dengan teknik analisis data reduksi data, penyajian data dan veri-fikasi data. Hasil penelitian menunjukkan; 1 Umumnya guru MA sudah meng-implementasikan KTSP. 2 Sebagian guru tidak maksimal karena kondisi sarana yang tidak mendukung. 3 Faktor pendukung yaitu; manajemen kepala madra-sah, kurikulum, kompetensi guru, anggaran pendidikan, optimalisasi kerjasama dengan masyarakat. 4 Faktor penghambat; kurangnya sarana prasarana, guru mengajar tidak sesuai dengan latar belakang pendidikannya, rendahnya kesejah-teraan guru. 5 Untuk mengatasi faktor penghambat adalah; meningkatkan kuali-tas sarana prasarana. 6 Bentuk strategi yaitu; peningkatan kualitas manajemen kurikulum dan program pengajaran, peningkatan kompetensi guru, peningkatan kesejahteraan guru, peningkatan prestasi akademik siswa, terpenuhinya kebu-tuhan sarana dan prasarana, peningkatan kualitas pelaksanaan tugas kepala madrasah, peningkatan kualitas ketakwaan kepada Allah swt. serta akhlak mulia, dan meningkatkan manajemen hubungan madarasah dengan masyarakat.

VALIDITAS TES CLOZE, TES-C, DAN PENILAIAN DIRI SEBAGAI ALAT UKUR KEMAMPUAN MEMBACA TEKS BAHASA INGGRIS

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Suharso Suharso

2013-09-01

Full Text Available Penelitian ini bertujuan untuk mengetahui validitas tes cloze (CL dan tes-C (C sebagai alat ukur kemampuan membaca teks bahasa Inggris dengan tes Reading Comprehension (RC dari TOEFL sebagai tolok ukur dan mengetahui validitas penilaian diri (PD dengan mengacu pada ketiga tes tersebut. Populasi penelitian meliputi mahasiswa yang mengambil mata kuliah Reading I, III, dan V pada semester gasal tahun akademik 2006/2007 di Program Studi Pendidikan Bahasa Inggris, Fakultas Bahasa dan Seni, Universitas Negeri Yogyakarta. Sampel penelitian terdiri atas 121 mahasiswa yang dipilih dengan menggunakan teknik sampel acak gugus. Data kemampuan membaca dikumpulkan dengan tes RC, CL dan C. Data PD dikumpulkan dengan tiga kuesioner PD yang menggunakan model Likert. Data penelitian dianalisis dengan menggunakan teknik korelasi Pearson product moment. Hasil analisis data menunjukkan bahwa ada korelasi yang positif antara skor tes RC dan skor tes CL, antara skor tes RC dan tes C, dan antara skor PD dan ketiga skor tes membaca tersebut. Kata kunci:      tes reading comprehension, tes cloze, tes-c, penilaian diri, validitas

Penggunaan Metode Fuzzy Dalam Penilaian Tingkat Kemampuan Non-Akademik Mahasiswa Melalui Satuan Kredit Kegiatan Mahasiswa

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Putu Linda Santiari

2016-12-01

Granting point non-academic activities in Bali STIKOM done using point SKKM (Satuan Kredit Kegiatan Mahasiswa. SKKM is a recognition and assessment of the activities pursued by students STMIK STIKOM Bali in the development and assessment activities of student affairs. Recognition of the activities pursued expressed in the form of SKKM. The amount of weighting SKKM is adjusted to the type and implementation of the activities pursued. Metering point SKKM still done manually and not able to assess the level of non-academic abilities of students. Related lack way to assess the non-academic achievements of the student so that the student can not determine what policy should be taken to measure the level of non-academic achievements of students. Based on the above information, the author tries to create and design a fuzzy logic to help the student section in evaluating the level of non-academic achievements of students through the SKKM. The authors hope the results of this evaluation can help the Student Council in assessing the level of non-academic achievements of students through the Student Activity Credit Unit and take the next step of the assessment. The data sample used was 10 students who have SKKM. Keywords: Fuzzy, SKKM, Non-academic

HARGA DIRI, EFIKASI DIRI, MOTIVASI BELAAR, DAN BERPRESTASI AKADEMIK SISWA SMA PADA BERBAGAI MODEL PEMBELAJARAN

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Dinda Ayu Novariandhini

2012-08-01

Full Text Available  This study aims was to analyze the self-esteem, self-efficacy, learning motivation, and academic achievement of high school students in various learning models that involved 26 students of the acceleration class, 30 students of the international class, and 30 students of the regular class in Bogor City. The third class represent each learning models in this research. Data was collected by self-report with the help of a questionnaire. The study using descriptive and inference analysis. The results found a different intrinsic motivation between students of the three learning models. The results also showed different evaluation results between students of the three classes that was accelerated class had the highest achievement of cognitive and psychomotor. The study also found a positive significant correlation between self-esteem with self-efficacy, intrinsic motivation, and extrinsic motivation. In addition, results found a positive significant correlation between self-efficacy with intrinsic motivation and extrinsic motivation. The results also showed a negative relationship between intrinsic motivation with cognitive and psychomotor achievement level of the students.

Evaluasi Keamanan Sistem Informasi Akademik Menggunakan ISO 17799:2000 (Studi Kasus Pada Peguruan Tinggi X

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Mona Permatasari Mokodompit

2017-01-01

Full Text Available The security of an information system in a college is important since the strength of the security system will have a direct impact on the sustainability of the college. Academic information system in college is used in order to meet academic need, and therefore it’s security must be maintained in order to provide useful information for its users. Assessment standard for management information system information security that is internationally recognized is ISO 17799:2000. The research aims to evaluate the security academic information system of University X based on ISO 17799:2000 and to give recommendations to improve the security. This study was conducted using interview techniques, observation and giving questionnaires to managers and users of academic information system of university X. The questionnaire used is a closed questionnaire, which is a broke-down result of ten control clauses of ISO 17799:2000. Answers gathered were then assessed based on established criteria. The results showed that the academic information system security of University X included in the category of less secure, where the result presentation obtained was 59%. In order to increase the security, University X must give special attention to work on the security policy, security organization, personnel security, physical and environmental security, communication and operation management, access control and compliance.

Perbedaan Stres Akademik antara Kelompok Siswa Minoritas dengan Mayoritas di SMP WR.Supratman 2 Medan

OpenAIRE

Fachrosi, Erlyani

2013-01-01

Stress is an important topic in academic setting. Stress is a gap condition between psychological and physiological demands of the situation with the source of the biological, psychological, and social. Academic stress is a stress-related aspects of learning, especially learning experience. The one of academic stress phenomenon can be seen in the context of integration in schools. School as a melting pot for assimilation of minority groups into the dominant group. An interis...

Penyetaraan tes soal potensi akademik berdasarkan teori respon butir menggunakan Software R di STMIK AKBA

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Akbar Iskandar

2017-08-01

Full Text Available This study aims to determine the quality of the package about the Academic Potential Test, to know the procedure of equalizing the package of test of Academic Potential Test and to know how to get two sets of tests that have equality with the method of testEquatigdata .. The type of research is explorative, which will reveal the equivalence of test scores based on response- Items. Tithe equivalence procedure, horizontal equalizer selection, common item nonequivalent group equalization selection, third parameter estimation using 2P model (different power and difficulty level and four equalization process using testEquatingData. Results Equivalence tests with the EQuestData method based on the grain response theory using the 2 parameter model, indicating that the average difficulty level on both packages differs from the packet value of 01 (-1.32934 and the packet value 02 (-2.63645. While the difference between the two packages is different and shows that it can not distinguish the ability of the participants, between high ability and low participant ability, based on the value of package 01 (-0.26831 and package 02 (-0.37774.

Penyetaraan tes soal potensi akademik berdasarkan teori respon butir menggunakan Software R di STMIK AKBA

OpenAIRE

Akbar Iskandar; Ahmad Rudi

2017-01-01

This study aims to determine the quality of the package about the Academic Potential Test, to know the procedure of equalizing the package of test of Academic Potential Test and to know how to get two sets of tests that have equality with the method of testEquatigdata .. The type of research is explorative, which will reveal the equivalence of test scores based on response- Items. Tithe equivalence procedure, horizontal equalizer selection, common item nonequivalent group equalization selecti...

PERSEPSI MAHASISWA PENDIDIKAN MATEMATIKA TENTANG PELAKSANAAN MAGANG TERAPAN OLEH STKIP MPL TAHUN AKADEMIK 2015-2016

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Noerhasmalina Noerhasmalina

2018-02-01

Full Text Available Abstract In the academic year 2015-2016 for the first time STKIP Muhammadiyah Pringsewu Lampung (STKIP MPL implementing Applied Internship program (MT. Applied internship is mandatory for students after graduation internship Basic (MD and the Advanced Apprenticeship (ML. MT This is a new program and the suspect will be perceived together with Field Experience Practice program (PPL. The purpose of this study was to describe the mathematics education students' perceptions about the implementation of MT by STKIP MPL. The population in this study were all students STKIP MPL trainees applied consisting of four courses. Determination of the study sample was using technique purposive sampling. Retrieved mathematics education courses as a sample followed by 60 participants. To obtain data on students' perceptions conducted questionnaire. Furthermore, the data were analyzed descriptively. Based on the analysis and discussion of the perception expressed obtained 7 student interns applied academic year 2015-2016. Keywords:.Applied Internship, Student Perceptions

HUBUNGAN ANTARA EFIKASI DIRI DENGAN PROKRASTINASI AKADEMIK PADA SISWA KELAS XI SMA NEGERI 9 PADANG

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Nelia - Afriyeni

2015-03-01

Full Text Available This research is aimed to know the relationship between self-efficacy and academic procrastination toward students in second year at senior high school state 9 of Padang. Respondents that are used in the research are the students in second year at senior high school state 9 of Padang. The research is conducted to the 66 students in second year and in the academic year of 2008/2009, where the respondents' determination is done by random sampling technique. The technique of data collecting is used the Likert scale models. That is the scale of self-efficacy and The Procrastination Assesment Scale-Students (PASS that is developed by Solomon and Rothblum (1994. The methode for analyzing data that is used for testing hyphotesis in the research is the correlation Product Moment (Pearson. Before conducting hyphotesis test, firts, it must done of using test assumptions by normality and linearity test. The result of data analysis shows efficacy scores are at a moderate scale (60,6%, and also the procrastination academic scores are at a moderate scale (72,73%. From the result of data processing is obtained p = 0,000 < 0,01 with a correlation coefficient -0,574 it means hyphotesis is accepted. The result shows there is a negative and significant relationship between self-efficacy and academic procrastination toward the students in the second year at senior high school state 9 of Padang, with the effective contribution of 33%. Thus, it can be concluded that if the higher self-efficacy, then the lower the students' academic procrastination behavior. Conversely, the lower of the self-efficacy, the higher the students' academic procrastination behavior

FAKOR-FAKTOR YANG MEMPENGARUHI PROKRASTINASI AKADEMIK PADA MAHASISWA FAKULTAS PSIKOLOGI UIN SUNAN GUNUNG DJATI BANDUNG

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Hana Hanifah Fauziah

2016-02-01

Full Text Available The aim of this study was to determine the factors that influence academic procrastination among student as well as make the measuring instrument for academic procrastination. The research method was mixed method with exploratory sequential design. The study was conducted at the Faculty of Psychology UIN Sunan Gunung Jati Bandung with the number of respondents was 113 subjects chosen by disproportionate stratified random sampling. Technical analysis of qualitative data using interactive models while quantitative data using lisrel item analysis to confirm which factors have strong correlation with academic procrastination. The results obtained there were three factors that cause procrastination: physical, psychological, and environmental, with a correlation value for confirmatory analysis as follows 0.50 for the physical aspect, 0.55 for psychological aspects and environmental aspects with 0.92.

Yeni Ad, Yeni Sayı, Yeni Web Sayfası ve Zengin İçerik

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Ömer Aslan

2016-06-01

Full Text Available Akademik yayın hayatının 20. yılına ulaşan Cumhuriyet Üniversitesi İlahiyat Fakültesi Dergisi, son yıllarda ulusal ve uluslararası akademik yayıncılık alanında önemli mesafeler kat etti. 15 Aralık 2016 tarihinde yayımladığımız 19. cilt 2. sayımızdan itibaren sağlanan ilerlemeleri, siz değerli okuyucularımızla paylaşmak istiyoruz.1996 yılından itibaren  Cumhuriyet Universitesi Ilahiyat Fakultesi Dergisi [Cumhuriyet University Journal of Faculty of Theology] adıyla yayınlanan dergimizin adının çok uzun olması ve atıf tespitinde yaşanan zorluklar sebebi ile Cumhuriyet ilahiyat dergisi [Cumhuriyet theology journal] olarak değiştirilmesi kararlaştırılmıştır.  Dergimiz, 20. cilt, 1. sayıdan itibaren bu adla yayın hayatına devam edecektir.Dergimiz, TÜBİTAK - ULAKBİM’in sunduğu elektronik dergi yönetim sistemi DergiPark Akademik’ın yeni versiyonunun güçlü açık erişim ve online akademik yayıncılık alt yapısını kullanabilmek amacıyla gerekli teknik çalışmaları tamamladı. Bu kapsamda 01 Haziran 2016 tarihi itibariyle yeni web sayfamız hizmete girdi.          Eski web sitemiz: http://dergipark.ulakbim.gov.tr/cumuilah/          Yeni web sitemiz: http://cumhuriyet.dergipark.gov.tr/cuidDergimizde yayımlanan yoğun emek mahsulü makalelerin uluslararası akademik camianın bilgisine sunulabilmesi ve yazarlarımızın yurt dışından atıf alabilmesi amacıyla, hakem değerlendirmesinden geçen makalelerin, Türkçe ve İngilizce 150 kelimelik “Öz/Abstract” ile birlikte 750 kelimelik “Özet/Summary” içermesi de zorunlu tutulmaya başlandı. İlk defa bu sayımızda “Özet/Summary” içeren makaleler sizlerle buluştu.Yine ilk defa bu sayımızda, ilahiyat alanında yurtiçi veya yurtdışında son üç yıl içinde tamamlanan ve yayın için dergimize gönderilen doktora tezlerine ait Türkçe ve İngilizce özetleri yayımladık. Bu sayede yurti

Introduction to nonequilibrium statistical mechanics with quantum field theory

International Nuclear Information System (INIS)

Kita, Takafumi

2010-01-01

In this article, we present a concise and self-contained introduction to nonequilibrium statistical mechanics with quantum field theory by considering an ensemble of interacting identical bosons or fermions as an example. Readers are assumed to be familiar with the Matsubara formalism of equilibrium statistical mechanics such as Feynman diagrams, the proper self-energy, and Dyson's equation. The aims are threefold: (1) to explain the fundamentals of nonequilibrium quantum field theory as simple as possible on the basis of the knowledge of the equilibrium counterpart; (2) to elucidate the hierarchy in describing nonequilibrium systems from Dyson's equation on the Keldysh contour to the Navier-Stokes equation in fluid mechanics via quantum transport equations and the Boltzmann equation; (3) to derive an expression of nonequilibrium entropy that evolves with time. In stage (1), we introduce nonequilibrium Green's function and the self-energy uniquely on the round-trip Keldysh contour, thereby avoiding possible confusions that may arise from defining multiple Green's functions at the very beginning. We try to present the Feynman rules for the perturbation expansion as simple as possible. In particular, we focus on the self-consistent perturbation expansion with the Luttinger-Ward thermodynamic functional, i.e., Baym's Φ-derivable approximation, which has a crucial property for nonequilibrium systems of obeying various conservation laws automatically. We also show how the two-particle correlations can be calculated within the Φ-derivable approximation, i.e., an issue of how to handle the 'Bogoliubov-Born-Green-Kirkwood-Yvons (BBGKY) hierarchy'. Aim (2) is performed through successive reductions of relevant variables with the Wigner transformation, the gradient expansion based on the Groenewold-Moyal product, and Enskog's expansion from local equilibrium. This part may be helpful for convincing readers that nonequilibrium systems can be handled microscopically with

Üniversite Hastaneleri Çalışanlarının Kalite Anlayışı ve Kalite Çalışmalarında İletişimin Önemi: Bir Uygulama Örneği=Conception of Quality of University Hospitals Employees and the Importance of Quality Work Communication: A Practical Example

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Huriye Çolaklar

2013-10-01

Full Text Available Bu çalışmada, bir kamu kurumunda kalite çalışmalarının anlaşılması ve etkin olabilmesi için kurum çalışanlarının, ortaya çıkabilecek sorunların iletişimle çözülebileceği bilincine sahip olmaları gerektiği vurgulanmıştır. Araştırmada veri toplama yöntemi olarak anket yöntemi kullanılmış ve kurumun yöneticileri ile akademik personeline uygulanmıştır. Toplam 205 kişiye anket gönderilmiş olup, 173 geri bildirim alınmıştır. Anketlerden 4 tanesi eksik ve hatalı doldurulduğu için değerlendirmeye alınmamıştır. Anketleri yanıtlayan 173 kişiden 29’u yöneticidir. Elde edilen verilere göre; yöneticiler “iletişim ve karar mekanizmasını” %23 ile en az önemli; akademik personel ise “örgüt ikliminin motivasyon artırıcı bir nitelikte olmasını” %33 oranla önemli görmektedir. Kurumun kalite yönetimini uygularken karşılaşılan güçlükler arasında yöneticilere göre %39’nun “üst yönetimin yönetim anlayışı” ve %38’nin “kurum içi iletişim eksikleri” en az önemlide, akademik personelde ise %23’nün “iletişim eksikleri” az önemlide yer almıştır. Bu çalışma sonucunda, kalite yönetim sistemi uygulanırken çalışanların, kaliteli hizmet anlayışını ve müşteri memnuniyetini en çok önemli ve iletişimin katkısını da en az önemli seviyesinde değerlendirdikleri saptanmıştır. Ancak kurum içi iletişim eksiklikleri ve birimler arası sürtüşmelerin olması, kalite yönetim sisteminin, etkin olmasını ve kalite bilincinin gelişmesini olumsuz etkilemektedir./In this study, we emphasize that the public institution employees are also that should be aware that problems can be solved by means of communication for the purpose of appreciating the quality of work and making it effective. The survey was used as a method of data collection and that survey was conducted on office managers and academic staff. The survey sheets were sent out to

Pendekatan Conjoint Analysis untuk Mengukur Tingkat Preferensi Mahasiswa terhadap Layanan Sistem Informasi Akademik di UIN Yogyakarta

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Epha Diana Supandi

2012-04-01

Full Text Available Information Technology (IT represent one of main indicator to support the academic atmosphere at the university. Therefore UIN Sunan Kalijaga (Suka Yogyakarta has owned sistem information technology and it is called Academic Information System (SIA. UIN Suka shall has knowledge preference and perception of consumer to the service, which is like what required by consumer. By using Conjoint Analysis method would have been obtained combination from level-level factor (stimuly took a fancy by consumer according to value of highest utility from every level factor.  The objective of this research is to measure preference level of consumers (students to the SIA services in UIN Suka used Conjoint Analysis method. The result shows that the most important factor in using SIA service is the benefit (importance value is 66,623%, the second important factor is accesibility of SIA ( importance value is 19,227% and the last important is ability of staff  (importance value is 14,15%. According to value of utility estimate, it shows that consumers like to use SIA for key in courses (utility estimate is 2,104, online service (utility estimate is 0,577 and SIA staff who are very friendly when they were servicing the students (utility estimate is 0,210.

Akademik Başarı, Cinsiyet, Tutum ve Öğrenme Stratejilerinin Kullanımı

OpenAIRE

Özkal, Yrd. Doç. Dr. Neşe; Çetingöz, Araş. Gör. Dr. Duygu

2014-01-01

The aim of this research is to study the strategies used by second grade elementary school students during Social Studies lessons in terms of the variables academic success, attitude towards the lesson and gender. 682 students (343 female and 339 male) randomly chosen from 6th (n=164), 7th (n=265) and 8th (n=253) grades of secondary schools within the borders of Izmir Municipality participated in the research. Research data were collected using “Inquiry Form”, “Social Studies Learning Strateg...

ANALISIS KECENDERUNGAN PENELITIAN SKRIPSI MAHASISWA PROGRAM STUDI PENDIDIKAN MATEMATIKA UNIVERSITAS MUHAMMADIYAH SUKABUMI TAHUN AKADEMIK 2014-2015

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Nur’aini Muhassanah

2016-04-01

Full Text Available The purpose of this research describe the distribution and trends of theundergraduate thesis that conducted by the Mathematics Education Departmentstudents in terms of the research type, focus of the research, research materials,and research subject, and also describe the difficulties experienced by thestudents. This research is a qualitative case study. The subjects of the researchare 8 th semester of Mathematics Education Department students in the academicyear 2014-2015. The data collecting technique used questionnaire and interviewmethods. The data validity used triangulation method, coordinating betweenquestionnaire and interview data. Results of this research are: (1 the type ofstudent research is quantitative; (2 the focus of the research is learning modeland problem solving; (3 the research material is Geometri; and (4 the researchsubject is junior high school students. In addition, the results obtained thestudent difficulties in arrange the undergraduate thesis and also the solutionsare: (1 they can’t organize their time, the solution make a good planning, (2 thedifficulty in finding, determine the problem, and also determine theundergraduate thesis title, the solution make an undergraduate thesis mapactivities; (3 the difficulty of processing and data analysis and also the laziness,the solution is motivate yourself; (4 The difficulty to meet the lecturers, thesolution is discuss with friends, lecturers, and also family; and (5 the difficultyduring made the instrument, the solution is looking for and reading references.Keywords: trends of the undergraduate thesis , distribution of the undergraduatethesis

Status gizi, aktivitas fisik, dan prestasi akademik siswa SMA gakin dan non-gakin di Kota Bitung

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Daniel Robert

2007-03-01

Full Text Available Background: A good nutritional status of students will greatly support their physical activities. Social economic status of a family may affect intake of nutrient, energy, and protein which can bring impact on nutritional status. Good nutritional status is necessary for teenagers to maintain health and support physical activities. Senior high school students from poor and non poor families may have different nutritional status, physical activities, and academic achievement. Objectives: The objectives of the study were to identify differences in nutritional status, physical activities, and academic achievement of students from poor and non poor families at Bitung Municipality and relationship between intake of energy and protein and nutritional status, physical activities, and academic achievement of students from poor and non poor families. Methods: The study was observational with cross sectional design. Population and samples were senior high school students of 16–18 years old (from database from poor and non poor families. Total samples were 314 students taken using stratified random sampling technique. The study was conducted in September–December 2005. Data were analyzed using chi-square, t-test, and linear regression with significance level 95% and processed using computer software. Results: There was a significant difference in nutritional status, light physical activity, academic achievement in poor and non poor highschool students (p0,05. There was also a relationship between confounding variable of energy intake with nutritional status, father’s job with light activity, father’s education and job with medium activity, father and mother’s education, father’s job, and energy intake with academic achievement. There was no relationship between confounding variable with heavy physical activity (p>0,05. Conclusion: There was differences in nutritional status in light physical activity and academic achievement between students from poor and those from non poor families.

PENGARUH SUPERVISI AKADEMIK, KOMPETENSI GURU DAN KEDISIPLINAN TERHADAP KINERJA GURU SMA NEGERI 3 SLAWI KABUPATEN TEGAL

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Sussono Hadi

2009-09-01

Full Text Available This research is aimed at finding out the impact of academic supervision, teacher’s competence, and discipline towards the performance of teachers of SMA Negeri 3 Slawi, Tegal. This research used survey method. The data was collected using questionnaire and observation. There were 52 teachers as respondents. The data analysis used was percentage, multiple linear regression, F test and t test. The finding was : 1 academic supervision, teacher’s competence and discipline of SMA 3 Slawi teachers were very good, 2 academic supervision, teacher’s competence, and discipline together had impact towards teachers’ performance, 3 academic supervision, teacher’s competence, and discipline separately had impact on teachers’ performance, and 4 discipline had the strongest impact towards teachers’ performance. With this result it is suggested that the Diknas (the regential ministry of education intensify the academic supervision, continually developing teacher’s competence, and enforcing discipline on teachers and schools. Key words: academic supervision, competence, discipline, teacher’s performance

ANALISIS STRUCTURAL EQUATION MODELING PADA PENGARUH KEBIASAAN MENGAKSES FACEBOOK TERHADAP KUALITAS HIDUP DAN PRESTASI AKADEMIK MAHASISWA

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Nalim Nalim

2014-02-01

Full Text Available This study tried to determine the effect on quality of life Facebook and students' academic achievement. A total of 210 samples were taken from three universities with proportional multistage random sampling method, while data analysis was conducted using Structural Equation Modeling (SEM with software lisrel 8.80 (student version. The results showed, although according to the investigators alleged that Facebook had a negative impact on quality of life, but the effect was not significant. This is evident from the t value of -1.90 (less than 1.96. Similarly, the structural equation generated, quality of life and Facebook together provide significant influence on academic achievement (with values of t are respectively 0.69 and -0.92. Keywords: structural equation modeling, custom facebook access, quality of life, student academic achievement

Analisis Structural Equation Modeling Pada Pengaruh Kebiasaan Mengakses Facebook Terhadap Kualitas Hidup Dan Prestasi Akademik Mahasiswa

OpenAIRE

Nalim, Nalim

2014-01-01

This study tried to determine the effect on quality of life Facebook and students' academic achievement. A total of 210 samples were taken from three universities with proportional multistage random sampling method, while data analysis was conducted using Structural Equation Modeling (SEM) with software lisrel 8.80 (student version). The results showed, although according to the investigators alleged that Facebook had a negative impact on quality of life, but the effect was not...

KONTRIBUSI SELF CONCEPT MATEMATIS DAN MATHEMATICS ANXIETY TERHADAP HASIL BELAJAR MAHASISWA

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Aan Subhan Pamungkas

2015-05-01

Full Text Available Penelitian ini mengkaji hubungan antara self concept dan kecemasan matematika dengan hasil belajar mahasiswa tingkat awal. Penelitian ini didasari oleh sebagian besar mahasiswa awal program studi pendidikan matematika masih merasa cemas ketika berhadapan dengan persoalan matematika dalam mata kuliah kalkulus I, selain itu dilihat dari performa mahasiswa ketika menyelesaikan persoalan matematika timbulnya rasa tidak pecaya diri atas kemampuan yang dimilikinya. Sehingga ketika akan menyelesaikan persoalan mahasiswa selalu bergantung kepada temannya, dengan tujuan memperoleh keyakinan atas jawabannya. Metode penelitian yang digunakan dalam penelitian ini adalah metode korelasional, metode ini digunakan untuk melihat seberapa kuat dan seberapa besar pengaruh self concept dan kecemasan matematika dengan hasil belajar mahasiswa. Populasi dalam penelitian ini adalah seluruh mahasiswa program studi pendidikan matematika tahun akademik 2013/2014, sampel penelitian diambil dengan teknik purposive sampling sebanyak 88 mahasiswa yang mengontrak mata kuliah Kalkulus I. Instrument yang digunakan dalam penelitian ini adalah skala self concept matematis dan skala kecemasan matematika. Hasil penelitian menunjukkan bahwa terdapat hubungan yang positif antara self concept dan kecemasan terhadap matematika dengan hasil belajar mahasiswa.DOI: http://dx.doi.org/10.22342/jpm.9.1.2191.01 - 10

PENERAPAN LEARNING CYCLE SEBAGAI UPAYA MENINGKATKAN KETERAMPILAN GENERIK SAINS INFERENSIA LOGIKA MAHASISWA MELALUI PERKULIAHAN PRAKTIKUM KIMIA DASAR

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Woro Sumarni

2011-12-01

Full Text Available Penelitian ini bertujuan untuk meningkatkan kemampuan berpikir generik inferensialogika mahasiswa calon guru kimia dalam pembelajaran Praktikum Kimia Dasar denganstrategi learning cycle. Penelitian ini dilaksanakan di Jurusan Kimia FMIPA UNNES. Subjekpenelitian ini adalah mahasiswa prodi Pendidikan Kimia tahun akademik 2008/2009. Sebagaifokus penelitian adalah prestasi belajar mahasiswa untuk mengungkapkan perbedaan tingkatpemahaman konsep dan keterampilan generik inferensia logika. Penelitian didesain sebagaipenelitian tindakan kelas yang dilaksanakan dalam tiga siklus dengan tahapan PIOR. Dalamsetiap siklus diterapkan strategi Learning Cycle 5E (engagement, exploration, explaination,extension, evaluation. Instrumen yang digunakan dalam pengambilan data berupa soalpretes dan postes dengan bentuk soal pilihan benar salah diikuti alasan atas jawaban,sedangkan instrumen nontes berupa lembar observasi dan angket tanggapan mahasiswaterhadap model pembelajaran. Hasil penelitian tindakan kelas ini menunjukkan bahwapengembangan model pembelajaran praktikum kimia dasar dengan strategi learning cyclemampu meningkatkan penguasaan konsep-konsep kimia dasar dan keterampilan generiksains inferensia logika bagi calon guru kimia. Hal ini berarti pembelajaran praktikum kimiadasar dengan strategi learning cycle telah memberikan dampak positif terhadap peningkatankualitas pembelajaran Praktikum Kimia Dasar dan keterampilan generik sains inferensi logikabagi mahasiswa calon guru kimia. Kata kunci: learning cycle, keterampilan generik sains, inferensia logika

Istorijski eksperiment simuliranja 'velikog praska' / Historical experiment of a 'big bang' simulation

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Nebojša N. Gaćeša

2008-10-01

Full Text Available U međunarodnoj laboratoriji Evropske organizacije za nuklearna istraživanja (CERN – Conseil Européen pour la Recherche Nucléaire, u blizini Ženeve, na francusko-švajcarskoj granici, 10. septembra 2008. godine, započeo je istorijski eksperiment simuliranja „Velikog praska“, koji mnogi naučnici smatraju najvećim eksperimentom u ljudskoj istoriji. CERN je smešten u oko hiljadu zdanja u Švajcarskoj i Francuskoj (nadzemni objekti su većinom u Švajcarskoj, a podzemni uglavnom u Francuskoj. Okuplja oko 6 500 istraživača sa 500 univerziteta iz osamdesetak zemalja, uključujući i Srbiju, koje opslužuje oko tri hiljade stalno zaposlenih. Osnovan je 1. juna 1953. godine, a jedan od osnivača bila je i naša zemlja. Osnivački akt u ime FNRJ potpisao je naš čuveni naučnik i bivši predsednik Srpske akademije nauka i umetnosti – akademik Pavle Savić, koji je bio i jedan od osnivača i prvi direktor Nuklearnog instituta Vinča.

ANALISIS PEMANFAATAN JEJARING SOSIAL UNTUK PENENTUAN KONSENTRASI MAHASISWA DENGAN METODE SOCIAL NETWORK ANALYSIS (Studi Kasus: Universitas Nusantara PGRI Kediri

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Risky Aswi R

2015-08-01

Full Text Available Analisis pemanfaatan  jejaring  sosial untuk penentuan konsentrasi mahasiswa dengan metode sosial network analysis. Tujuan dibangun sistem ini untuk menentukan konsentrasi mahasiswa dengan pendekatan Sosial Network Analisis Studi Kasus Jejaring Sosial Facebook dan mampu memanfaatkan facebook sebagai alat untuk menentukan konsentrasi mahasiswa jurusan teknik informatika menjadi tiga bagian yaitu pemrograman, jaringan, dan multimedia. Batasan yang digunakan dalam penelitian ini adalah penelitian ini hanya berlaku pada mahasiswa yang memiliki akun facebook. Penelitian ini menggunakan Social Network Analysis untuk mencari between centrality.Pada tahap pertama setiap akun akan dilihat relasinya setelah itu hubungan antar akun akan dimasukan ke node XL dan akan menghasilkan between centrality. Mahasiswa yang melanjutkan proses selanjutnya adalah mahasiswa yang nilai betweent centralitynya 85% teratas. Setelah itu akan ditambahkan variabel group yang digunakan untuk mengkelompokan peminatan, dan ditambahkan variabel nilai akademis untuk menguatkan pendapat yang diperoleh sebelumnya.Dengan cara melihat between centrality dan menambahkan variabel group untuk membagi siswa sesuai konsentrasi, dan memabahkan variabel nilai akademik untuk memperkuat pendapat. Sosial network analysis terbukti dapat menentukan konsentrasi mahaiswa. Facebook dapat digunakan sebagai alat untuk menentukan konsentrasi mahasiswa, konsentrasi mahasiswa dibagi menjadi pemrograman, jaringan, dan multimedia. Kata Kunci : Jejaring Sosial, Social Network Analysis, between centrality

PENGARUH PROMOSI TERHADAP KEPUTUSAN MAHASISWA MEMILIH PROGRAM STUDI BUDIDAYA PERIKANAN POLITEKNIK NEGERI PONTIANAK

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Samsuddin

2017-06-01

Full Text Available Tujuan dari penelitian ini adalah untuk mengetahui pengaruh promosi terhadap keputusan mahasiswa memilih Program Studi Budidaya Perikanan Politeknik Negeri Pontianak. Jenis penelitian yang digunakan dalam penelitian ini adalah dengan menggunakan metode deskriptif. Populasi dalam penelitian ini adalah seluruh mahasiswa Program Studi Budidaya Perikanan Jurusan Ilmu Kelautan dan Perikanan Politeknik Negeri Pontianak. Sampel yang dipilih sebanyak 100 orang responden dari Program Studi Budidaya Perikanan Tahun Akademik 2015/2016 dengan teknik Proporsional Stratified Random Sampling. Hasil dari persamaan regresi Y= 3.667+0.545X, persamaan regresi linier sederhana dalam penelitian ini apabila promosi tetap atau tidak dilakukan peningkatan, maka nilai keputusan mahasiswa memilih Program Studi Budidaya Perikanan adalah sebesar 3.667. Nilai koefisien korelasi adalah sebesar 0,422, maka dapat disimpulkan bahwa hubungan antara advertising, publisity, sales promotion, dan direct marketing terhadap keputusan mahasiswa memilih Program Studi Budidaya Perikanan Politeknik Negeri Pontianak adalah sedang karena pada rentang 0,40-0,599. Nilai koefisien determinasi pada penelitian ini sebesar 0,178, sedangkan uji model (Uji F dapat disimpulkan bahwa model regresi linier sederhana tersebut dapat digunakan untuk memprediksi keputusan mahasiswa memilih Program Studi Budidaya Perikanan Politeknik Negeri Pontianak yang dipengaruhi oleh promosi.

Mapping of sound scattering objects in the northern part of the Barents Sea and their geological interpretation

Science.gov (United States)

Sokolov, S. Yu.; Moroz, E. A.; Abramova, A. S.; Zarayskaya, Yu. A.; Dobrolubova, K. O.

2017-07-01

On cruises 25 (2007) and 28 (2011) of the R/V Akademik Nikolai Strakhov in the northern part of the Barents Sea, the Geological Institute, Russian Academy of Sciences, conducted comprehensive research on the bottom relief and upper part of the sedimentary cover profile under the auspices of the International Polar Year program. One of the instrument components was the SeaBat 8111 shallow-water multibeam echo sounder, which can map the acoustic field similarly to a side scan sonar, which records the response both from the bottom and from the water column. In the operations area, intense sound scattering objects produced by the discharge of deep fluid flows are detected in the water column. The sound scattering objects and pockmarks in the bottom relief are related to anomalies in hydrocarbon gas concentrations in bottom sediments. The sound scattering objects are localized over Triassic sequences outcropping from the bottom. The most intense degassing processes manifest themselves near the contact of the Triassic sequences and Jurassic clay deposits, as well as over deep depressions in a field of Bouguer anomalies related to the basement of the Jurassic-Cretaceous rift system

Karriere im Traumjob – auch für Frauen? A Dream Job for a Career—Also for Women?

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Andrea Blunck

2004-11-01

Full Text Available Die beiden vorliegenden Bücher befassen sich – wie die Untertitel schon sagen – mit Berufsverläufen von Akademiker/-innen in verschiedenen Berufsfeldern, von Medizin über Wirtschaftswissenschaften bis zur vermeintlichen „Männerdomäne“ Mathematik. Die vorgestellten empirischen Studien belegen den sogenannten „Schereneffekt“, dass nämlich Frauen trotz gleicher Startbedingungen seltener „Karriere machen“ als Männer. Als bereichernde Ergänzung finden sich in Traumjob Mathematik! Berufswege von Mathematikerinnen aus der ersten Hälfte des 20. Jahrhunderts.The two texts at hand deal with—as the subheadings already mention—the occupational history of male and female academics from various fields, from medicine to business to the supposed “male domain“ of mathematics. The author presents empirical studies that substantiate the so-called “scissors effect,“ that is, that women rarely have a “successful career” despite having the same initial conditions and qualifications as men. The career paths of female mathematicians in the first half of the 20th century as described in Traumjob Mathematik! (Dream Job Mathematics! provide an enriching addition to the above.

Uranium in a recent phosphorite formation process

Energy Technology Data Exchange (ETDEWEB)

Baturin, G N; Dubinchuk, V I; Kochenov, A V

1986-01-01

Uranium behaviour in the process of nowadays phosphorite formation in the sediments of Namibia shelf is considered. The material collected during the 3-d trip of the research vessel ''Akademik Kurchatov'' and 26-th trip of the research vessel ''Mikhail Lomonosov'' is used. The samples from three geological stations 2046, 2047 and 2048 from the depths of 78-87 m have been investigated. Each sample (mass from 0.2 to 0.3 kg) is composed of several samples representing unified genetic series: holocene diatomic silts enclosing phosphorites - phosphatized silts - phosphorite concretions. Uranium has been determined by the X-ray spectral method; phosphorus, organic carbon and other components - by the chemical analysis. Uranium forms investigated by the combination of methods of electron microscopy, microdiffraction, microradioautography and microsounding. Uranium content in nowadays phosphorites at the shelf is 3-106 g/t. Uranium accumulation in phosphorites at the initial stages of their formation is controlled by its content in host sediments. In the course of litification of diagenetic phosphate concretions the uranium content in them varies from 40 to 80 g/t. The uranium concentration process in phosphorites is accompanied by formation of independent mineral phases of uranium oxide and ningyoite type.

APLIKASI CHATBOT “MI3” UNTUK INFORMASI JURUSAN TEKNIK INFORMATIKA BERBASIS SISTEM PAKAR MENGGUNAKAN METODE FORWARD CHAINING

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Zifora Nur Baiti

2013-10-01

Full Text Available Chatbot adalah suatu aplikasi yang dirancang untuk berkomunikasi dengan mesin. Komunikasi ini membantu user dalam mencari sebuah informasi. Informasi yang diberikan bermacam-macam, seperti tentang akademik. Chatbot yang dibangun ini dikhususkan untuk sebuah informasi yang melingkupi jurusan Teknik Informatika UIN Maliki Malang. Chatbot ini dibangun dengan menerapkan sistem pakar menggunakan metode forward chianing. Metode forward chaining adalah metode yang digunakan untuk mencari kesimpulan dari fakta-fakta  yang  terkumpul.  Metode  forward  chaining  merupakan  algoritma  yang  baik sebagai penyelesaian proses pencarian jawaban berdasarkan kata kunci dari pertanyaan user. Sistem kerja aplikasi ini adalah dengan memecah susunan kalimat menjadi kata kemudian dari kata tersebut oleh sistem akan dicari kunci yang membuat aplikasi dapat menjawab dengan benar. Dari hasil penelitian dengan menginputkan kalimat-kalimat yang berhubungan dan tidak dengan kategori, aplikasi ini mampu mengenali kata kunci pada kalimat-kalimat tersebut. Hal ini mengacu pada hasil pengujian yang didapatkan persentase sebesar  Sangat  Setuju  48,88%  dan  Setuju  51,22%  dari  25  responden  dengan  beberapa kalimat masukan.

EKSPERIMEN MODEL PEMBELAJARAN THINK-PAIR-SHARE DENGAN MODUL(TPS-M TERHADAP PRESTASI BELAJAR MATEMATIKA DITINJAU DARI MINAT BELAJAR

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Jatmiko Jatmiko

2015-02-01

Full Text Available Penelitian ini bertujuan untuk mengetahui : (1 manakah diantara Model PembelajaranTPS-M atau Think-Pair-Share” (TPS yang menghasilkan prestasi yang lebih baik, (2 Manakah yang lebih baik, prestasi belajar matematika siswa yang mempunyai minat belajar tinggi, sedang atau rendah, (3 manakah yang menghasilkan prestasi belajar matematika yang lebih baik, di antara Model Pembelajaran TPS-M dan Think-Pair-Share (TPS pada siswa yang mempunyai minat belajar tinggi, sedang dan rendah.Penelitian ini menggunakan metode eksperimental semu (Quasi experimental, dengan desain faktorial 2x3. Populasi penelitian ini adalah semua siswa kelas X SMK kelompok Teknik di Kabupaten Nganjuk Tahun Akademik 2012/2013. Sampel terbagi dalam 2 kelompok, yaitu kelompok eksperimen dan kelompok kontrol. Teknik analisis data yang digunakan dalam penelitian ini, yaitu analisis variansi dua jalan dengan sel tak sama. Berdasarkan hasil analisis diperoleh kesimpulan bahwa: (1 Model pembelajaran TPS-M menghasilkan prestasi belajar matematika yang lebih baik dibandingkan model pembelajaran. (2 Siswa dengan minat belajartinggi, sedang dan rendah memiliki hasil belajar matematika yang sama.(3 Pada masing-masing minat belajar siswa baik tinggi, sedang ataupun rendah prestasi belajar matematika pada model pembelajaran TPS-Mlebih baik dari pada model pembelajaran TPS.

Penerapan Teknologi RFID untuk Purwarupa Pencatatan Presensi Mahasiswa di Laboratorium Komputer

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Robby Tan

2017-10-01

Full Text Available Student presence is one of many the academic process. Currently, Information Technology Faculty still uses student signature in Daftar Hadir Mahasiswa dan Dosen (DHMD as proof of attendance. Every week, DHMD will be collected and student presence data will be inserted in Sistem Akademik Terpadu (SAT. The DHMD signing process is likely to lead to a loss of student concentration as it may take a while for the signature before returning to the lecturer's explanation. In addition, there are often signature errors in the sense that students sign other students' presences. In finding a solution to the problem, a prototype of presence attendance system is constructed so lecturer can monitor the while minimizing the process of the error occurring. This research utilizes RFID technology in form of the lecturer card and student identity card (KTM. The process of card identification and creating the flow process of capture digital presence can help the academic process work well. The conclusion of the research that has been done is the data stored in RFID has been successfully read and made in the form of digital attendance data.

Hubungan antara dukungan sosial dengan resiliensi yang dimoderatori oleh locus of control pada mahasiswa bidikmisi

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Alaiya Choiril Mufidah

2018-01-01

Full Text Available Pendidikan merupakan hal yang sangat penting yang harus diberikan kepada semua orang di dunia, namun kadang berbagai alasan melatar belakangi individu tidak melanjutkan pendidikan pada jenjang yang lebih tinggi. Dan salah satu penyebab tidak melanjutkan pendidikan yakni masalah kurangnya biaya. Mahasiswa bidikmisi merupakan berlatar belakang dari mahasiswa yang mampu dalam segi akademik namun kurang mampu dalam segi ekonomi, sehingga mereka diberikan beasiswa oleh pemerintah untuk bisa melanjutkan ke jenjang pendidikan yang lebih tinggi. Penelitian ini bertujuan untuk mengetahui hubungan positif antara dukungan sosial dan resiliensi mahasiswa bidikmisi, untuk mengetahui hubungan positif antara locus of control dan resiliensi, dan untuk mengetahui hubungan positif antara dukungan social dan resiliensi dengan Locus of Control sebagai variabel moderator. Penelitian ini menggunakan metode kuantitatif dengan tehnik analisis regresi berganda. Skala Resiliensi adaptasi milik Connor & Davidson (CD-RISC, skala Locus of Control adaptasi milik Levinson (MLCS, dan skala Dukungan Sosial adaptasi tesis Diana Kamilin. Hubungan antara variabel X dan Y dengan LOC sebagai mediator. . Subjek penelitian adalah mahasiswa bidikmisi di UIN Malang sebanyak 80 subjek Hasil dari analisis menunjukkan bahwa terdapat hubungan yang positif antara dukungan social dan resiliensi dengan locus of control sebagai moderator dengan nilai signifikansi 0.431 (p

Effective long wavelength scalar dynamics in de Sitter

Energy Technology Data Exchange (ETDEWEB)

Moss, Ian; Rigopoulos, Gerasimos, E-mail: ian.moss@newcastle.ac.uk, E-mail: gerasimos.rigopoulos@ncl.ac.uk [School of Mathematics and Statistics, Newcastle University, Herschel Building, Newcastle upon Tyne, NE1 7RU U.K. (United Kingdom)

2017-05-01

We discuss the effective infrared theory governing a light scalar's long wavelength dynamics in de Sitter spacetime. We show how the separation of scales around the physical curvature radius k / a ∼ H can be performed consistently with a window function and how short wavelengths can be integrated out in the Schwinger-Keldysh path integral formalism. At leading order, and for time scales Δ t >> H {sup −1}, this results in the well-known Starobinsky stochastic evolution. However, our approach allows for the computation of quantum UV corrections, generating an effective potential on which the stochastic dynamics takes place. The long wavelength stochastic dynamical equations are now second order in time, incorporating temporal scales Δ t ∼ H {sup −1} and resulting in a Kramers equation for the probability distribution—more precisely the Wigner function—in contrast to the more usual Fokker-Planck equation. This feature allows us to non-perturbatively evaluate, within the stochastic formalism, not only expectation values of field correlators, but also the stress-energy tensor of φ.

Theory of thermal conductivity in the disordered electron liquid

International Nuclear Information System (INIS)

Schwiete, G.; Finkel’stein, A. M.

2016-01-01

We study thermal conductivity in the disordered two-dimensional electron liquid in the presence of long-range Coulomb interactions. We describe a microscopic analysis of the problem using the partition function defined on the Keldysh contour as a starting point. We extend the renormalization group (RG) analysis developed for thermal transport in the disordered Fermi liquid and include scattering processes induced by the long-range Coulomb interaction in the sub-temperature energy range. For the thermal conductivity, unlike for the electrical conductivity, these scattering processes yield a logarithmic correction that may compete with the RG corrections. The interest in this correction arises from the fact that it violates the Wiedemann–Franz law. We checked that the sub-temperature correction to the thermal conductivity is not modified either by the inclusion of Fermi liquid interaction amplitudes or as a result of the RG flow. We therefore expect that the answer obtained for this correction is final. We use the theory to describe thermal transport on the metallic side of the metal–insulator transition in Si MOSFETs.

The photo-assisted heat current and its Peltier coefficient in a metal/dot/metal junction

International Nuclear Information System (INIS)

Crépieux, A

2012-01-01

The photo-assisted heat current through a metal/dot/metal junction and its associated Peltier coefficient are computed in the framework of the time-dependent out-of-equilibrium Keldysh formalism in the presence of a dot energy modulation. When the frequency of the modulation is much larger than the amplitude of the modulation, the heat current follows the sinusoidal time evolution of the dot energy. This is no longer the case when the modulation frequency becomes of the order of or smaller than the amplitude of the modulation. To characterize this non-sinusoidal behavior, we have calculated the harmonics of the photo-assisted heat current. The zero-order harmonic can be expressed as an infinite sum of dc heat currents associated with a dot with shifted energies. It exhibits a devil's staircase profile with non-horizontal steps, whereas it is established that the steps are horizontal for the zero-order harmonic of the photo-assisted electric current. This particularity is related to the fact that the dot heat is not a conserved quantity due to energy dissipation within the tunnel barriers.

Ion fractions in the scattering of hydrogen on silicon surfaces

International Nuclear Information System (INIS)

Garcia, Evelina A.; Gonzalez Pascual, C.; Bolcatto, P.G.; Passeggi, M.C.G.; Goldberg, E.C.

2005-01-01

We present a theoretical calculation of the resonant charge-exchange process occurring in H 0 scattering by Si(100)2 x 1 surfaces. In the atom-surface interacting system the core states of the surface atoms are included and the parameters of the Hamiltonian are calculated in an ab initio basis taking into account the extended features of the surface and the localized atom-atom interactions within a mean-field approximation. The density of states of the surface and sub-surface atoms are obtained from a molecular dynamic-density functional theory in the local density approximation. An elastic binary collision is assumed to fix the projectile trajectory, while the inelastic processes are determined by the interaction of the projectile atom with all the surface atoms 'seen' along its trajectory. The ion fractions are calculated by using the Green-Keldysh formalism to solve the time dependent process. The results, obtained as an average over different possibilities for the scattering center, reproduce the general trends of the experiment. (copyright 2005 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

Theory of thermal conductivity in the disordered electron liquid

Energy Technology Data Exchange (ETDEWEB)

Schwiete, G., E-mail: schwiete@uni-mainz.de [Johannes Gutenberg Universität, Spin Phenomena Interdisciplinary Center (SPICE) and Institut für Physik (Germany); Finkel’stein, A. M. [Texas A& M University, Department of Physics and Astronomy (United States)

2016-03-15

We study thermal conductivity in the disordered two-dimensional electron liquid in the presence of long-range Coulomb interactions. We describe a microscopic analysis of the problem using the partition function defined on the Keldysh contour as a starting point. We extend the renormalization group (RG) analysis developed for thermal transport in the disordered Fermi liquid and include scattering processes induced by the long-range Coulomb interaction in the sub-temperature energy range. For the thermal conductivity, unlike for the electrical conductivity, these scattering processes yield a logarithmic correction that may compete with the RG corrections. The interest in this correction arises from the fact that it violates the Wiedemann–Franz law. We checked that the sub-temperature correction to the thermal conductivity is not modified either by the inclusion of Fermi liquid interaction amplitudes or as a result of the RG flow. We therefore expect that the answer obtained for this correction is final. We use the theory to describe thermal transport on the metallic side of the metal–insulator transition in Si MOSFETs.

Majorana transport in superconducting nanowire with Rashba and Dresselhaus spin-orbit couplings.

Science.gov (United States)

You, Jia-Bin; Shao, Xiao-Qiang; Tong, Qing-Jun; Chan, A H; Oh, C H; Vedral, Vlatko

2015-06-10

The tunneling experiment is a key technique for detecting Majorana fermion (MF) in solid state systems. We use Keldysh non-equilibrium Green function method to study two-lead tunneling in superconducting nanowire with Rashba and Dresselhaus spin-orbit couplings. A zero-bias dc conductance peak appears in our setup which signifies the existence of MF and is in accordance with previous experimental results on InSb nanowire. Interestingly, due to the exotic property of MF, there exists a hole transmission channel which makes the currents asymmetric at the left and right leads. The ac current response mediated by MF is also studied here. To discuss the impacts of Coulomb interaction and disorder on the transport property of Majorana nanowire, we use the renormalization group method to study the phase diagram of the wire. It is found that there is a topological phase transition under the interplay of superconductivity and disorder. We find that the Majorana transport is preserved in the superconducting-dominated topological phase and destroyed in the disorder-dominated non-topological insulator phase.

Majorana transport in superconducting nanowire with Rashba and Dresselhaus spin–orbit couplings

International Nuclear Information System (INIS)

You, Jia-Bin; Shao, Xiao-Qiang; Tong, Qing-Jun; Oh, C H; Vedral, Vlatko; Chan, A H

2015-01-01

The tunneling experiment is a key technique for detecting Majorana fermion (MF) in solid state systems. We use Keldysh non-equilibrium Green function method to study two-lead tunneling in superconducting nanowire with Rashba and Dresselhaus spin–orbit couplings. A zero-bias dc conductance peak appears in our setup which signifies the existence of MF and is in accordance with previous experimental results on InSb nanowire. Interestingly, due to the exotic property of MF, there exists a hole transmission channel which makes the currents asymmetric at the left and right leads. The ac current response mediated by MF is also studied here. To discuss the impacts of Coulomb interaction and disorder on the transport property of Majorana nanowire, we use the renormalization group method to study the phase diagram of the wire. It is found that there is a topological phase transition under the interplay of superconductivity and disorder. We find that the Majorana transport is preserved in the superconducting-dominated topological phase and destroyed in the disorder-dominated non-topological insulator phase. (paper)

Sensitivity of ITER MHD global stability to edge pressure gradients

International Nuclear Information System (INIS)

Hogan, J.T.; Martynov, A.

1994-01-01

In view of the preliminary nature of boundary models for reactor tokamaks, the sensitivity to edge gradients of the global mode MHD stability of the ITER EDA configuration has been examined. The POLAR-2D equilibrium and TORUS stability codes developed by the Keldysh Institute have been used. Transport-related profiles from the PRETOR transport code (developed by the ITER Joint Central Team) and axisymmetric equilibria for these profiles from the TEQ code (L.D. Pearlstein, LLNL) were taken as a starting point for the study. These baseline profiles are found to have quite high global stability limits, in the range g(Troyon) = 4-5. The major focus of this study is to examine global mode stability assuming small variations about the baseline profiles, changing the pressure gradients near the boundary. Such changes can be expected with an improved boundary model. Reduced stability limits are found in such cases, and unstable cases with g = 2-3 are found. Thus, the assumption of ITER stability limits higher than g = 2 must be treated with caution

Fano–Kondo Effect in a Triple Quantum Dots Coupled to Ferromagnetic Leads

International Nuclear Information System (INIS)

Ai-Hua, Bi; Shao-Quan, Wu; Tao, Hou; Wei-Li, Sun

2008-01-01

Using the Keldysh nonequilibrium Green function and equation-of-motion technique, we have qualitatively studied the spin-dependent transport of a triple-QD system in the Kondo regime. It is shown that the Kondo resonance and Fano interference coexist, and in this system the Fano–Kondo effect shows dip behaviours richer than that in the T-shaped QDs. The interdot coupling, the energy level of the side coupled QDs and the spin polarization strength greatly influence the DOS of the central quantum dot QD 0 . Either the increase of the coupling strength between the two QDs or that of the energy levels of the side coupled QDs enhances the Kondo resonance. Especially, the Kondo resonance is strengthened greatly when the side dot energy is fixed at the Fermi energy. Meanwhile, the Kondo resonance splits for the spin-up and spin-down configurations due to the polarization: the down-spin resonance is enhanced, and the up-spin resonance is suppressed. (condensed matter: electronic structure, electrical, magnetic, and optical properties)

Scaling relation of the anomalous Hall effect in (Ga,Mn)As

Science.gov (United States)

Glunk, M.; Daeubler, J.; Schoch, W.; Sauer, R.; Limmer, W.

2009-09-01

We present magnetotransport studies performed on an extended set of (Ga,Mn)As samples at 4.2 K with longitudinal conductivities σxx ranging from the low-conductivity to the high-conductivity regime. The anomalous Hall conductivity σxy(AH) is extracted from the measured longitudinal and Hall resistivities. A transition from σxy(AH)=20Ω-1cm-1 due to the Berry phase effect in the high-conductivity regime to a scaling relation σxy(AH)∝σxx1.6 for low-conductivity samples is observed. This scaling relation is consistent with a recently developed unified theory of the anomalous Hall effect in the framework of the Keldysh formalism. It turns out to be independent of crystallographic orientation, growth conditions, Mn concentration, and strain, and can therefore be considered universal for low-conductivity (Ga,Mn)As. The relation plays a crucial role when deriving values of the hole concentration from magnetotransport measurements in low-conductivity (Ga,Mn)As. In addition, the hole diffusion constants for the high-conductivity samples are determined from the measured longitudinal conductivities.

Spin-transfer torque in spin filter tunnel junctions

KAUST Repository

Ortiz Pauyac, Christian

2014-12-08

Spin-transfer torque in a class of magnetic tunnel junctions with noncollinear magnetizations, referred to as spin filter tunnel junctions, is studied within the tight-binding model using the nonequilibrium Green\\'s function technique within Keldysh formalism. These junctions consist of one ferromagnet (FM) adjacent to a magnetic insulator (MI) or two FM separated by a MI. We find that the presence of the magnetic insulator dramatically enhances the magnitude of the spin-torque components compared to conventional magnetic tunnel junctions. The fieldlike torque is driven by the spin-dependent reflection at the MI/FM interface, which results in a small reduction of its amplitude when an insulating spacer (S) is inserted to decouple MI and FM layers. Meanwhile, the dampinglike torque is dominated by the tunneling electrons that experience the lowest barrier height. We propose a device of the form FM/(S)/MI/(S)/FM that takes advantage of these characteristics and allows for tuning the spin-torque magnitudes over a wide range just by rotation of the magnetization of the insulating layer.

Nonequilibrium dynamical mean-field theory

Energy Technology Data Exchange (ETDEWEB)

Eckstein, Martin

2009-12-21

The aim of this thesis is the investigation of strongly interacting quantum many-particle systems in nonequilibrium by means of the dynamical mean-field theory (DMFT). An efficient numerical implementation of the nonequilibrium DMFT equations within the Keldysh formalism is provided, as well a discussion of several approaches to solve effective single-site problem to which lattice models such as the Hubbard-model are mapped within DMFT. DMFT is then used to study the relaxation of the thermodynamic state after a sudden increase of the interaction parameter in two different models: the Hubbard model and the Falicov-Kimball model. In the latter case an exact solution can be given, which shows that the state does not even thermalize after infinite waiting times. For a slow change of the interaction, a transition to adiabatic behavior is found. The Hubbard model, on the other hand, shows a very sensitive dependence of the relaxation on the interaction, which may be called a dynamical phase transition. Rapid thermalization only occurs at the interaction parameter which corresponds to this transition. (orig.)

Nonequilibrium dynamical mean-field theory

International Nuclear Information System (INIS)

Eckstein, Martin

2009-01-01

The aim of this thesis is the investigation of strongly interacting quantum many-particle systems in nonequilibrium by means of the dynamical mean-field theory (DMFT). An efficient numerical implementation of the nonequilibrium DMFT equations within the Keldysh formalism is provided, as well a discussion of several approaches to solve effective single-site problem to which lattice models such as the Hubbard-model are mapped within DMFT. DMFT is then used to study the relaxation of the thermodynamic state after a sudden increase of the interaction parameter in two different models: the Hubbard model and the Falicov-Kimball model. In the latter case an exact solution can be given, which shows that the state does not even thermalize after infinite waiting times. For a slow change of the interaction, a transition to adiabatic behavior is found. The Hubbard model, on the other hand, shows a very sensitive dependence of the relaxation on the interaction, which may be called a dynamical phase transition. Rapid thermalization only occurs at the interaction parameter which corresponds to this transition. (orig.)

The tunnel magnetoresistance in chains of quantum dots weakly coupled to external leads

International Nuclear Information System (INIS)

Weymann, Ireneusz

2010-01-01

We analyze numerically the spin-dependent transport through coherent chains of three coupled quantum dots weakly connected to external magnetic leads. In particular, using the diagrammatic technique on the Keldysh contour, we calculate the conductance, shot noise and tunnel magnetoresistance (TMR) in the sequential and cotunneling regimes. We show that transport characteristics greatly depend on the strength of the interdot Coulomb correlations, which determines the spatial distribution of the electron wavefunction in the chain. When the correlations are relatively strong, depending on the transport regime, we find both negative TMR as well as TMR enhanced above the Julliere value, accompanied with negative differential conductance (NDC) and super-Poissonian shot noise. This nontrivial behavior of tunnel magnetoresistance is associated with selection rules that govern tunneling processes and various high-spin states of the chain that are relevant for transport. For weak interdot correlations, on the other hand, the TMR is always positive and not larger than the Julliere TMR, although super-Poissonian shot noise and NDC can still be observed.

Theory of a peristaltic pump for fermionic quantum fluids

Science.gov (United States)

Romeo, F.; Citro, R.

2018-05-01

Motivated by the recent developments in fermionic cold atoms and in nanostructured systems, we propose the model of a peristaltic quantum pump. Differently from the Thouless paradigm, a peristaltic pump is a quantum device that generates a particle flux as the effect of a sliding finite-size microlattice. A one-dimensional tight-binding Hamiltonian model of this quantum machine is formulated and analyzed within a lattice Green's function formalism on the Keldysh contour. The pump observables, as, e.g., the pumped particles per cycle, are studied as a function of the pumping frequency, the width of the pumping potential, the particles mean free path, and system temperature. The proposed analysis applies to arbitrary peristaltic potentials acting on fermionic quantum fluids confined to one dimension. These confinement conditions can be realized in nanostructured systems or, in a more controllable way, in cold atoms experiments. In view of the validation of the theoretical results, we describe the outcomes of the model considering a fermionic cold atoms system as a paradigmatic example.

Electron transport through a diatomic molecule

International Nuclear Information System (INIS)

Imran, Muhammad

2014-01-01

Electron transport through a diatomic molecular tunnel junction shows wave like interference phenomenon. By using Keldysh non-equilibrium Green's function (NEGF) theory, we have explicitly presented current and differential conductance calculation for a diatomic molecular and two isolated atoms (two atoms having zero hybridization between their energy orbitals) tunnel junctions. In case of a diatomic molecular tunnel junction, Green's function propagators entering into current and differential conductance formula interfere constructively for a molecular anti-bonding state and destructively for bonding state. Consequently, conductance through a molecular bonding state is suppressed, and to conserve current, conductance through anti-bonding state is enhanced. Therefore, current steps and differential conductance peaks amplitude show asymmetric correspondence between molecular bonding and anti-bonding states. Interestingly, for a diatomic molecule, comprising of two atoms of same energy level, these propagators interfere completely destructively for molecular bonding state and constructively for molecular anti-bonding state. Hence under such condition, a single step or a single peak is shown up in current versus voltage or differential conductance versus voltage studies.

Quantum optimal control theory in the linear response formalism

International Nuclear Information System (INIS)

Castro, Alberto; Tokatly, I. V.

2011-01-01

Quantum optimal control theory (QOCT) aims at finding an external field that drives a quantum system in such a way that optimally achieves some predefined target. In practice, this normally means optimizing the value of some observable, a so-called merit function. In consequence, a key part of the theory is a set of equations, which provides the gradient of the merit function with respect to parameters that control the shape of the driving field. We show that these equations can be straightforwardly derived using the standard linear response theory, only requiring a minor generalization: the unperturbed Hamiltonian is allowed to be time dependent. As a result, the aforementioned gradients are identified with certain response functions. This identification leads to a natural reformulation of QOCT in terms of the Keldysh contour formalism of the quantum many-body theory. In particular, the gradients of the merit function can be calculated using the diagrammatic technique for nonequilibrium Green's functions, which should be helpful in the application of QOCT to computationally difficult many-electron problems.

Spin-transfer torque in spin filter tunnel junctions

KAUST Repository

Ortiz Pauyac, Christian; Kalitsov, Alan; Manchon, Aurelien; Chshiev, Mairbek

2014-01-01

Spin-transfer torque in a class of magnetic tunnel junctions with noncollinear magnetizations, referred to as spin filter tunnel junctions, is studied within the tight-binding model using the nonequilibrium Green's function technique within Keldysh formalism. These junctions consist of one ferromagnet (FM) adjacent to a magnetic insulator (MI) or two FM separated by a MI. We find that the presence of the magnetic insulator dramatically enhances the magnitude of the spin-torque components compared to conventional magnetic tunnel junctions. The fieldlike torque is driven by the spin-dependent reflection at the MI/FM interface, which results in a small reduction of its amplitude when an insulating spacer (S) is inserted to decouple MI and FM layers. Meanwhile, the dampinglike torque is dominated by the tunneling electrons that experience the lowest barrier height. We propose a device of the form FM/(S)/MI/(S)/FM that takes advantage of these characteristics and allows for tuning the spin-torque magnitudes over a wide range just by rotation of the magnetization of the insulating layer.

Steering neutral atoms in strong laser fields

International Nuclear Information System (INIS)

Eilzer, S; Eichmann, U

2014-01-01

The seminal strong-field tunnelling theory introduced by L V Keldysh plays a pivotal role. It has shaped our understanding of atomic strong-field processes, where it represents the first step in complex ionisation dynamics and provides reliable tunnelling rates. Tunnelling rates, however, cannot be necessarily equated with ionisation rates. Taking into account the electron dynamics in the Coulomb potential following the tunnelling process, the process of frustrated tunnelling ionisation has been found to lead to excited Rydberg atoms. Here, we excite He atoms in the strong-field tunnelling regime into Rydberg states. A high percentage of these Rydberg atoms survive in high intensity laser fields. We exploit this fact together with their high polarisability to kinematically manipulate the Rydberg atoms with a second elliptically polarised focused strong laser field. By varying the spatial overlap of the two laser foci, we are able to selectively control the deflection of the Rydberg atoms. The results of semi-classical calculations, which are based on the frustrated tunnelling model and on the ponderomotive acceleration, are in accord with our experimental data. (paper)

“ÇOCUKLUĞUMUZA İNELİM…” TARİH YAZIMINDA PSİKOBİYOGRAFİLER: İYİ ÖRNEKLERDEN YÖNTEMİN BELİRLENMESİNE

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Süleyman İNAN

2016-10-01

Full Text Available Daha çok siyasi kişilerin biyografileri son zamanlarda akademik tarih çalışmalarında ilgi görmekte ve farklı disiplinlerden yardım alarak yeni boyut kazanmaktadır. Psikolojinin rehberliğindeki ve basitçe kişiyi daha iyi anlama olarak tanımlanan "psiko-biyografi" (psychociography de bunlardan biridir. Psikobiyografi,  incelenen kişinin ruh ve iç dünyasına yönelir ve kayda geçmiş arşivsel bilgi, anı ve anlatılardan yola çıkarak mantıklı/tutarlı açıklamalar getirmeye uğraşır. Akademik alanda yöntemi hâlâ tartışılan ve henüz yaygınlık kazanmamış böylesi çalışmaların bilimselliği, bu durumda kolaylıkla yazanın yaklaşım, ele alış tarzı ve tutumuyla ilişkilendirilebilir. Bu çalışma, yeni bir disiplin olarak bir psikobiyografik çalışmada nasıl bir yol izleneceği, güçlü-zayıf yanlarının neler olduğu ve kaynaklarının ne olacağı sorularını cevap arayan ve temelde bu yeni alanın metodolojik kurallarını/notlarını ortaya koymayı hedeflemektedir. Anahtar kelimeler: Tarih Yazımı, Psikobiyografi, Psiko-Tarih, Tarih Yöntemi THE PSYCHO-BIOGRAPHIES in HISTORIOGRAPHY: FROM GOOD EXAMPLES to DETERMINING RESEARCH METHOD Abstract: Mostly, biographies of political people have attracted attention in academic history studies in recent times and add a new dimension thanks to aids received from different disciplines. "Psychobiography" which is under guidance of psychology and simply defined as a better understanding of individual is also one of them.  Psychobiography heads towards spirit and inner world of individual examined and tries to bring logical/consistent explanations derived from knowledge, memory, and what was told based on recorded archive. In this case, being scientific of such studies whose method have still been discussing and which have not gained currency in academic field yet can be easily associated with approach, treatment, and attitude of writer. This study seeks

THE EFFECTIVENESS OF USING CLUSTER CONNECTION TOWARDS STUDENTS’ VOCABULARY MASTERY AT THE EIGHTH GRADE OF MTs DARUL IHSAN DURI

Directory of Open Access Journals (Sweden)

setiawati setiawati

2017-12-01

Full Text Available Penelitian ini bertujuan mengetahui keefektifan penggunaan cluster connection terhadap penguasaan kosakata siswa pada siswa kelas 8 MTs Darul Ihsan Duri. Behubungan dengan objek penelitian, peneliti menggunakan metode eksperimen. Model penelitiannya adalah kelompok pretest--post test untuk kelas control dan eksperimen. Penelitian ini diadakan pada MTs Darul Ihsan Duri pada tahun akademik 2015/2016. Populasi penelitian ini adalah kelas 8 MTs Darul Ihsan Duri pada tahun akademik 2015/2016. Total populasi penelitian adalah 62 siswa. Sampel penelitian ini adalah kelas VIII.A sebagai kelas kontrol, dan VIII.B sebagai kelas eksperimen. Kelas VIII.A terdiri atas 31 siswa. Kelas VIII.B terdiri atas 31 siswa. Dalam menganalisis data peneliti menggunakan Independent Sample T-Test. T-Test digunakan untuk mengetahui apakah teknik cluster connection effektif terhadap penguasaaan kosakata siswa. Hasil penelitian menunjukan bahwa penggunaan teknik cluster connection efektif terhadap penguasaaan kosakata siswa. Berdasarkan perhitungan statistic dalam menganalisis data peneliti memberikan tafsiran skor postest pada kelas eksperimen dan kelas kontrol. Dari perhitungan, t-test adalah 2.627 dan t-table adalah 2.00. karena nilai t-test (2.627 lebih tinggi dari pada t-table (2.00. Berdasarkan hasil penelitian, dapat disimpulkan bahwa alternative hipotesis (Ha diterima dan hipotesis null (Ho ditolak. Ini berarti pengajaran kosakata dengan teknik cluster connection adalah efektif.   This study aimed to know The Effectiveness of Using Cluster Connection Towards The Students’ VocabularyMastery at The Eighth Graders at MTs Darul Ihsan Duri. Related to the object of the research, the researcher used experimental method. The design of the research was control and experiment group; pretest – posttest design. The research was conducted at MTs. Daru lIhsan Duri in the academic year 2015/2016. The population of this research was the eighth grade students of MTs Darul Ihsan

Yeni Ad, Yeni Sayı, Yeni Web Sayfası ve Zengin İçerik

Directory of Open Access Journals (Sweden)

Ömer Aslan

2016-06-01

Full Text Available Akademik yayın hayatının 20. yılına ulaşan Cumhuriyet Üniversitesi İlahiyat Fakültesi Dergisi, son yıllarda ulusal ve uluslararası akademik yayıncılık alanında önemli mesafeler kat etti. 15 Aralık 2016 tarihinde yayımladığımız 19. cilt 2. sayımızdan itibaren sağlanan ilerlemeleri, siz değerli okuyucularımızla paylaşmak istiyoruz.1996 yılından itibaren  Cumhuriyet Universitesi Ilahiyat Fakultesi Dergisi [Cumhuriyet University Journal of Faculty of Theology] adıyla yayınlanan dergimizin adının çok uzun olması ve atıf tespitinde yaşanan zorluklar sebebi ile Cumhuriyet ilahiyat dergisi [Cumhuriyet theology journal] olarak değiştirilmesi kararlaştırılmıştır.  Dergimiz, 20. cilt, 1. sayıdan itibaren bu adla yayın hayatına devam edecektir.Dergimiz, TÜBİTAK - ULAKBİM’in sunduğu elektronik dergi yönetim sistemi DergiPark Akademik’ın yeni versiyonunun güçlü açık erişim ve online akademik yayıncılık alt yapısını kullanabilmek amacıyla gerekli teknik çalışmaları tamamladı. Bu kapsamda 01 Haziran 2016 tarihi itibariyle yeni web sayfamız hizmete girdi.          Eski web sitemiz: http://dergipark.ulakbim.gov.tr/cumuilah/          Yeni web sitemiz: http://cumhuriyet.dergipark.gov.tr/cuidDergimizde yayımlanan yoğun emek mahsulü makalelerin uluslararası akademik camianın bilgisine sunulabilmesi ve yazarlarımızın yurt dışından atıf alabilmesi amacıyla, hakem değerlendirmesinden geçen makalelerin, Türkçe ve İngilizce 150 kelimelik “Öz/Abstract” ile birlikte 750 kelimelik “Özet/Summary” içermesi de zorunlu tutulmaya başlandı. İlk defa bu sayımızda “Özet/Summary” içeren makaleler sizlerle buluştu.Yine ilk defa bu sayımızda, ilahiyat alanında yurtiçi veya yurtdışında son üç yıl içinde tamamlanan ve yayın için dergimize gönderilen doktora tezlerine ait Türkçe ve İngilizce özetleri yayımladık. Bu sayede yurti

Tingkat Stres Pada Mahasiswa Malaysia Semester I Fakultas Kedokteran Gigi Universitas Sumatera Utara Tahun Akademik 2013/2014

OpenAIRE

Wukar Hussain, Rabiah Irfah

2014-01-01

Stepping into university is a big step in one's life. Lifestyle changes, academic achievement, a solid schedule of lectures, problem peers, adapt away from home for the first time and with the new environment can trigger the occurrence of stress in first y ear students. Plus, if these first year students are international students from Malaysia migrated to Medan to study dentistry. These first year students from Malaysia must adjust to the new environment affectively, behavi...

Hubungan Kecanduan Online Game Dengan Indeks Prestasi Akademik Pada Mahasiswa Fakultas Kedokteran Universitas Sumatera Utara Angkatan 2012

OpenAIRE

Chandrasegaran, Swapna

2016-01-01

Background: The market share of online games are among the teens. Online gaming addiction (addiction to online games) is an extension of internet addiction (addiction to the internet). Online gaming addiction is a bound state of a person in a very strong habit and difficulties in letting go of the habbit of playing online game. Gaming addiction can cause significant losses. One disadvantage is that the player can be remiss in real life because they get deeply involved in the game. The phenome...

JIHAD AKADEMIK KALANGAN PERGURUAN TINGGI ISLAM MELAWAN KORUPSI (PEMAKNAAN AKADEMISI ATAS KERANCUAN FIQIH DAN BUDAYA TERHADAP KORUPSI

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Muh. Khamdan

2014-09-01

Full Text Available ACADEMIC  JIHAD  OF  ISLAMIC  COLLEGE CIVITAS ACADEMICA TO AGAINST CORRUPTION: ACADEMICS THOUGHT ON ‘FIQH’ AND CULTURAL CONFUSION TOWARD CORRUPTION. Paradox reality in Indonesia shows the rise of  social diversity, but the achievements of corruption also increased. It shows that the diversity of  social patterns is still in the theoretical-formalistic stage. This paper intends to conduct discourse criticism studies toward doctrin with thinking “jihad” to shift the thinking sacret ‘fiqh’ which is formalized. In promoting the eradication of corruption, Islam can play a role in various forms. Moral values taught at least provide answers about the spread of  corruption with interpretation radicalization toward Islamic moral values. This new social ethic can encourage people to prevent, monitor, report and fix a number of social sanctions mechanisms in the community in the form of anti-corruption ‘fiqh’. This anti-corruption ‘fiqh’ becomes a kind of corruption prevention efforts in the form of Islamic study. keywords: Paradox, The Criticism Of  Discourse, Social Ethics, Anti-Corruption ‘Fiqh’ Realitas paradoks dalam kehidupan bangsa Indonesia menunjukkan bahwa keberagamaan masyarakat meningkat, namun prestasi korupsi juga meningkat. Hal ini menunjukkan pola keberagamaan masyarakat masih dalam tahap teoritik-formalistik. Tulisan ini bermaksud melakukan kajian kritik wacana terhadap doktrin dengan “jihad” pemikiran untuk menggeser sakralitas doktrin dalam fiqih yang terformalkan. Dalam menggalakkan pemberantasan korupsi, Islam dapat berperan dalam beragam bentuk. Nilai-nilai moralitas yang diajarkan setidaknya memberikan jawaban semakin menyebarnya praktik korupsi dengan radikalisasi interpretasi terhadap nilai moralitas Islam. Etika social baru ini dapat mendorong masyarakat untuk senantiasa mencegah, mengawasi, melaporkan dan memperbaiki sejumlah mekanisme sanksi sosial yang hidup di masyarakat dalam wujud fiqih anti korupsi. Fiqih anti-korupsi menjadi semacam upaya pencegahan korupsi dalam melalui kajian keagamaan. kata kunci: Paradoks, Kritik Wacana, Etika Sosial, Fiqih Anti-Korupsi.

PENGUASAAN BAHASA INGGRIS MAHASISWA BARU UNY TAHUN AKADEMIK 2005/2006 – 2009/2010 PADA KRITERIA TOEFL-LIKE

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Bambang Sugeng

2013-01-01

they attain a mean score of 378.81 (FMIPA, 372.83 (FISE, 367.18 (FT, 363.83 (FBS, 363.77 (FIP, and 356.44 (FIK. Second, highest scores are achieved by four study programs (400 or higher, the second by 13 study programs (375 – 399, the third by 45 study programs (350 – 374, and the lowest scores by eight study programs (349 or lower. Third, the score attainment is 35.5% (Reading, 31.25% (Structure, and 27.2% (Listening. Fourth, possible follow-up activities are elevation of students’ TOEFL scores, course placements, improvement of MKU English, planning and implementation of international programs, and graduation requirement for S-1.

SELF-REGULATED LEARNING DAN PERSEPSI DUKUNGAN SOSIAL DENGAN PRESTASI AKADEMIK MAHASISWA FAKULTAS USHULUDDIN IAIN IMAM BONJOL PADANG

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Subhan Ajrin Sudirman

2015-04-01

Full Text Available This research aimed to examine the correlations between self-regulated learning and social support perception with students academic achievement at Ushuluddin Faculty of State Institute for Islamic Studies Imam Bonjol Padang. This research used purposive sampling technique. The subjects of this research were 150 students. The data were collected by using, (1 The self-regulated learning scale, (2 The social support perception scale, and (3 documentation. The data were analyzed by using multiple regression of SPSS 13.0 for windows. The results of this research are: (1 There is very significant and positive correlation between self-regulated learning and students academic achievement (r = 0,325, p < 0,001 and R² = 0,106; (2 There is very significant and positive correlation between social support perception and students academic achievement (r = 0,284, p < 0,001 and R² = 0,081.

Pengaruh Kepemimpinan, Disain Pekerjaan, dan Iklim Organisasi terhadap Kepuasan Kerja Tenaga Penunjang Akademik di Universitas Negeri Medan

OpenAIRE

Irsan, Irsan

2011-01-01

The objectives of this research were to find out: (1) the effect of leadership on job satisfaction, (2) the effect of job design job satisfaction, (3) the effect of organizational climate on job satisfaction;  (4) the effect of leadership on organizational climate; and (5) the effect of job design on organizational climate. The study was a survey conducted in Medan with 79 sample of Medan University employees, selected randomly. The data were analyzed by using path analysis.   ...

PENGARUH KEPEMIMPINAN, DISAIN PEKERJAAN, DAN IKLIM ORGANISASI TERHADAP KEPUASAN KERJA TENAGA PENUNJANG AKADEMIK DI UNIVERSITAS NEGERI MEDAN

OpenAIRE

Irsan, Irsan

2011-01-01

The objectives of this research were to find out: (1) the effect of leadership on job satisfaction, (2) the effect of job design job satisfaction, (3) the effect of organizational climate on job satisfaction;  (4) the effect of leadership on organizational climate; and (5) the effect of job design on organizational climate. The study was a survey conducted in Medan with 79 sample of Medan University employees, selected randomly. The data were analyzed by using path analysis.   ...

PERBEDAAN PROKRASTINASI AKADEMIK DALAM MENYELESAIKAN SKRIPSI PADA MAHASISWA FAKULTAS PSIKOLOGI UKSW BERDASARKAN TIPE KEPRIBADIAN A DAN B

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Sutriyono Sutriyono

2012-12-01

semester genap 2011/2012 yang mengambil matakuliah skripsi dan skripsi lanjut dilibatkan. Alat pengumpul data menggunakan dua skala, yang pertama adalah modifikasi skala prokrastinasi Tuckman (Tuckman Procrastination Scale untuk mengukur tingkat prokrastinasi dan modifikasi skala Bortner untuk menggolongkan kedalam salah tipe kepribadian. Hasil penelitian menunjukkan bahwa secara signifikan, mahasiswa dengan kepribadian tipe A mempunyai tingkat prokastinasi dalam menyelesaikan skripsi lebih rendah dibandingkan dengan mahasiswa yang mempunyai tipe kepribadian B.

Pelatihan Motivasi Berprestasi Untuk Menurunkan Kecenderungan Prokrastinasi Akademik Mahasiswa Program Studi Bimbingan dan Konseling Universitas Muhammadiyah Magelang

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Nofi Nur Yuhenita

2015-06-01

Full Text Available     The aim of this research is to discover the influence of achievement motivation training to the decr ease of student‟s tendency of academic procrastination. The design of this research is pre test post test control group design experiment. Subjek in this research is 20 people for experiment group and 20 people for the control group. The data analysis are t paired sample test that was used to test the differences between the pre-test and post-test result of achievement motivation training given to either experiment and t independent sample to test the difference between the  gain score pre-post test of experiment group and control group after the students conducted the achievement motivation training. The result of the research shows that there are significant differences of student‟s academic procrastination for those who conduct the training and the others who did not conduct the training. Finally, this research concludes that achievement motivation training can be used to decrease student‟s academic procrastination. This research can be used by all stakeholders, Unit Pelaksana Teknis Layanan Bimbingan dan Konseling, lecturer, counselor at the college to reduce the tendency of academic procrastination by providing training on student achievement motivation. 

DISAIN SIMULATOR AUTOMOTIVE AIR CONDITIONING UNTUK MENINGKATKAN KOMPETENSI MAHASISWA

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Kamin Sumardi

2015-08-01

Full Text Available Perkembangan teknologi automotive air conditioning dan aplikasinya sangat cepat, salah satunya dengan menerapkan green technology. Penerapan green technology pada teknologi air conditioning, karena masih menggunakan refrigeran yang mengandung unsur kimia yang merusak lapisan ozon dan pemanasan global. Alih teknologi bidang air conditioning yang ramah lingkungan, belum dibarengi dengan ketersediaan tenaga kerja pada tingkat SMK dan perguruan tinggi yang memadai, baik kuantitas maupun kompetensinya. Pada level SMK dan perguruan tinggi, kompetensi akademik dan vokasional bidang automotive air conditioning harus terus ditingkatkan dan diperbaharui sesuai dengan perkembangan teknologinya. Penelitian ini bertujuan untuk menghasilkan simulator automotive air conditioner dan model pembelajaran tata udara pada otomotif berwawasan teknologi ramah lingkungan. Penelitian menggunakan metode research and development dengan langkah-langkah: studi pendahuluan, perencanaan, pengembangan melalui uji coba simulator, validasi, dan produk akhir. Simulator dibuat sesuai dengan kondisi di dunia kerja agar tidak terjadi miskonsepsi dan mala-praktek automotive air conditioning. Simulator ini dibuat secara kompak dan mobile atau dapat dipindah dan dibawa. Model pembelajaran disesuaikan dengan kebutuhan kompetensi yang dipersyaratkan. Hasil penelitian menunjukkan bahwa dengan bantuan simulator automotive air conditioner dan model pembelajaran yang tepat mahasiswa mampu menyerap konsep dan praktek lebih cepat 85%. Hasil belajar pada ranah afektif, kognitif, psikomotor dan kompetensi meningkat secara signifikan.

IMPLEMESTASI E-KRS PADA PROGRAM STUDI D4 TEKNIK INFORMATIKA

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Chairul Fikri Ramadhan

2016-08-01

Full Text Available Seiring dengan kemajuan ilmu pengetahuan dan teknologi, komputer telah digunakan untuk berbagai keperluan dan menjadi bagian yang sangat penting untuk menunjang aktifitas maupun pekerjaan dalam segala hal. Pemanfaatan atau pengembangan sistem komputer ini sangat membantu pekerjaan seseorang termasuk dalam kegiatan akademik. Termasuk pula perguruan tinggi Politeknik Harapan Bersama Tegal, khususnya Program Studi D4 Teknik Informatika. Pada setiap perguruan tinggi tentunya memiliki system pengisian KRS sebagai syarat untuk mengambil matakuliah yang akan ditempuh disemester depan. Namun banyak perguruan tinggi yang masih menggunakan sistem pengisian KRS dengan cara manual termasuk pada Program Studi D4 Teknik Informatika Politeknik Harapan Bersama Tegal.Berdasarkan kondisi tersebut, maka diperlukan perencanaan sebagai langkah awal, menganalisis data yang diperlukan, merancang sistem yang ada menggunakan UML, serta penerapannya untuk mengimplementasikan  sebuah sistem E-KRS pada program studi D4 Teknik Informatika dengan tujuan untuk menghasilkan sebuah aplikasi E-KRS pada Program Studi D4 Teknik Informatika sehingga mempermudah mahasiswa dalam mengisi formulir KRS secara online. Sistem dirancang dan dibangun dengan menggunakan teknologi PHP serta Framework Code Igniter, Xampp sebagai web server, MySql sebagai database server. Dan Adobe Dreamweaver sebagai editor. Kata kunci: Tegal, E-KRS, Program Studi D4 Teknik Informatika

Implementasi WhatsApp Mobile Learning Untuk Meningkatkan Hasil Belajar Mahasiswa Pokok Bahasan Pengenalan Komponen Elektronika

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Hendrik Pratama

2016-09-01

Full Text Available Permasalahan yang muncul dalam penelitian ini yakni kurangnya optimalisasi peran media sosial  berbasis android smartphone khususnya WhatsApp Messenger dalam upaya meningkatkan hasil belajar. Peran media sosial lebih banyak digunakan sebagai komunikasi secara online, seperti chatting, pemberitahuan kabar, undangan, hiburan, dan promosi bisnis. Penelitian ini bertujuan untuk mengetahui penerapan Whatsapp Mobile Learning sebagai upaya meningkatkan hasil belajar pada pokok  bahasan Konsep Dasar Elektronika. Penelitian yang akan dilakukan  menggunakan  metode  penelitian  tindakan  kelas  (PTK. Tahapan  penelitian  yang  dilakukan  meliputi  tahap  perencanaan,  pelaksanaan tindakan, pengamatan, dan refleksi. Subjek penelitian ini adalah 21 mahasiswa SMT gasal tahun akademik 2015/2016 Program Studi Pendidikan Teknik Elektro IKIP PGRI Madiun. Data yang diperoleh berupa hasil dokumentasi, observasi, wawancara, dan tes hasil belajar. Hasil penelitian menyatakan bahwa implementasi whatsapp sebagai mobile learning dapat meningkatkan hasil belajar mahasiswa pada pokok bahasan pengenalan komponen elektronika. Pada siklus I, pertemuan I ketercapaian pembelajaran sebesar 45% dan meningkat pada pertemuan II menjadi 60%. Pada siklus II, ketercapaian pembelajaran juga meningkat pada pertemuan III menjadi 75% dan pertemuan IV sebesar 82%. Dalam hal ini I capaian peningkatan hasil belajar mahasiswa melebihi indikator kinerja yaitu 80% sehingga pembelajaran dikatakan berhasil.

THE DISCUSSION OF NOUN COMPLEMENTS WITH NO SUFFIXES AND THE RELATION BETWEEN WORD CLASSES AND PHRASES TAKISIZ AD TAMLAMASI TARTIŞMASI VE TÜR – ÖBEK İLİŞKİSİ

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Caner KERİMOĞLU

2011-01-01

Full Text Available The discussion of compound nouns with no suffixes has an important place in Turkish grammar writing. Recently, it is seen that this discussion has come to an end and the constructions like tahta kaşık “wooden spoon”, altın kolye “golden necklace” are accepted as adjective complements. In this study, firstly these discussions are evaluated and then the roles of word classes in phrases are discussed with regard to nouns and adjectives. Takısız ad tamlaması tartışması Türkçe dil bilgisi yazımında önemli bir yere sahiptir. Son yıllarda bu konuyla ilgili tartışmaların azaldığı ve akademik yayınların çoğunda tahta kaşık, altın kolye dizilişindeki yapıların sıfat tamlaması kabul edildiği görülmektedir. Bu çalışmada takısız ad tamlaması tartışmaları değerlendirildikten sonra, kelime türlerinin öbek kurmadaki rolleri sıfat ve ad türleri temelinde tartışılmaktadır.

The frontal structure in Drake Passage based on the data of the section in January 2010

Science.gov (United States)

Tarakanov, Roman

2014-05-01

The frontal structure in the region of Drake Passage is investigated on the basis of data of Absolute Dynamic Topography (ADT) of French agency CLS (DT-Global-MADT-Upd product, http://aviso.oceanobs.com), and CTD- and SADCP-measurements along the hydrophysical section carried out across the passage from Smith Isl. (just to the east of the Hero F.Z.) to the Cape Horn onboard R/V "Akademik Ioffe" in January 2010. The investigation was similar to the analysis performed on the basis of data of the section carried out two weeks earlier onboard the same vessel south of Africa. Fine-jet structure of the ACC was detected in Drake Passage as well as to the south of Africa where twelve ACC jets were found. Eleven jets of the Antarctic Circumpolar Current (ACC) were revealed in Drake Passage. These were five jets of the Subantarctic Current (the band of Subantarctic Front), four jets of the South Polar Current (the band of Polar Front), and two jets of the South Antarctic Current (the band of Southern ACC Front). Two jets of the South Antarctic Current were joined in a single "super-jet" according to the velocity measurements in the section. The others were manifested by the local velocity maxima in the surface layer.

Stratified flows and internal waves in the Vema Fracture Zone of the Mid Atlantic Ridge

Science.gov (United States)

Makarenko, Nikolay; Morozov, Eugene; Tarakanov, Roman; Demidova, Tatiana; Frey, Dmitri; Grigorenko, Klim

2017-04-01

In this paper, we study stratified flows and internal waves in the Vema fracture zone of the Mid Atlantic Ridge. This fracture provides intense transportation of cold abyssal waters from the West Atlantic to the equatorial region of the East Atlantic [1]. The results of measurements [2,3] carried out in the cruises of RV Akademik Sergey Vavilov in 2014-2016 are presented. The structure of the near-bottom flow is studied experimentally on the basis of CTD- and LADCP profiling. Theoretical analysis involves mathematical formulation of stratified fluid flow which uses CTD-data obtained from field observation. Spectral properties and kinematic characteristics of internal waves are calculated and discussed. This work was supported by RFBR (grants No 15-01-03942, 16-35-50158). References [1] Morozov E., Demidov A., Tarakanov R. and Zenk W. Abyssal Channels in the Atlantic Ocean: Water Structure and Flows, Springer, Dordrecht, 2010. [2] Morozov E.G., Tarakanov R.Yu., and Makarenko N.I. Flows of Antarctic Bottom Water through fractures in the southern part of the North Mid Atlantic Ridge, Oceanology, 2015, 55, 796-800. [3] Grigorenko K.S., Makarenko N.I., Morozov E.G., Tarakanov R.Yu., and Frey D.I. Stratified flows and internal waves in the Central West Atlantic, J. Physics: Conf. Series, 2016, 722, 012011.

The effect of n- and p-type doping on coherent phonons in GaN.

Science.gov (United States)

Ishioka, Kunie; Kato, Keiko; Ohashi, Naoki; Haneda, Hajime; Kitajima, Masahiro; Petek, Hrvoje

2013-05-22

The effect of doping on the carrier-phonon interaction in wurtzite GaN is investigated by pump-probe reflectivity measurements using 3.1 eV light in near resonance with the fundamental band gap of 3.39 eV. Coherent modulations of the reflectivity due to the E2 and A1(LO) modes, as well as the 2A1(LO) overtone are observed. Doping of acceptor and donor atoms enhances the dephasing of the polar A1(LO) phonon via coupling with plasmons, with the effect of donors being stronger. Doping also enhances the relative amplitude of the coherent A1(LO) phonon with respect to that of the high-frequency E2 phonon, though it does not affect the relative intensity in Raman spectroscopic measurements. We attribute this enhanced coherent amplitude to the transient depletion field screening (TDFS) excitation mechanism, which, in addition to impulsive stimulated Raman scattering (ISRS), contributes to the generation of coherent polar phonons even for sub-band gap excitation. Because the TDFS mechanism requires photoexcitation of carriers, we argue that the interband transition is made possible at a surface with photon energies below the bulk band gap through the Franz-Keldysh effect.

Time-dependent quantum transport through an interacting quantum dot beyond sequential tunneling: second-order quantum rate equations

International Nuclear Information System (INIS)

Dong, B; Ding, G H; Lei, X L

2015-01-01

A general theoretical formulation for the effect of a strong on-site Coulomb interaction on the time-dependent electron transport through a quantum dot under the influence of arbitrary time-varying bias voltages and/or external fields is presented, based on slave bosons and the Keldysh nonequilibrium Green's function (GF) techniques. To avoid the difficulties of computing double-time GFs, we generalize the propagation scheme recently developed by Croy and Saalmann to combine the auxiliary-mode expansion with the celebrated Lacroix's decoupling approximation in dealing with the second-order correlated GFs and then establish a closed set of coupled equations of motion, called second-order quantum rate equations (SOQREs), for an exact description of transient dynamics of electron correlated tunneling. We verify that the stationary solution of our SOQREs is able to correctly describe the Kondo effect on a qualitative level. Moreover, a comparison with other methods, such as the second-order von Neumann approach and Hubbard-I approximation, is performed. As illustrations, we investigate the transient current behaviors in response to a step voltage pulse and a harmonic driving voltage, and linear admittance as well, in the cotunneling regime. (paper)

Tunneling conductance in semiconductor-superconductor hybrid structures

Science.gov (United States)

Stenger, John; Stanescu, Tudor D.

2017-12-01

We study the differential conductance for charge tunneling into a semiconductor wire-superconductor hybrid structure, which is actively investigated as a possible scheme for realizing topological superconductivity and Majorana zero modes. The calculations are done based on a tight-binding model of the heterostructure using both a Blonder-Tinkham-Klapwijk approach and a Keldysh nonequilibrium Green's function method. The dependence of various tunneling conductance features on the coupling strength between the semiconductor and the superconductor, the tunnel barrier height, and temperature is systematically investigated. We find that treating the parent superconductor as an active component of the system, rather than a passive source of Cooper pairs, has qualitative consequences regarding the low-energy behavior of the differential conductance. In particular, the presence of subgap states in the parent superconductor, due to disorder and finite magnetic fields, leads to characteristic particle-hole asymmetric features and to the breakdown of the quantization of the zero-bias peak associated with the presence of Majorana zero modes localized at the ends of the wire. The implications of these findings for the effort toward the realization of Majorana bound states with true non-Abelian properties are discussed.

Floquet prethermalization and regimes of heating in a periodically driven, interacting quantum system

Science.gov (United States)

Weidinger, Simon; Knap, Michael

We study the regimes of heating in the periodically driven O (N) -model, which represents a generic model for interacting quantum many-body systems. By computing the absorbed energy with a non-equilibrium Keldysh Green's function approach, we establish three dynamical regimes: at short times a single-particle dominated regime, at intermediate times a stable Floquet prethermal regime in which the system ceases to absorb, and at parametrically late times a thermalizing regime. Our simulations suggest that in the thermalizing regime the absorbed energy grows algebraically in time with an the exponent that approaches the universal value of 1 / 2 , and is thus significantly slower than linear Joule heating. Our results demonstrate the parametric stability of prethermal states in a generic many-body system driven at frequencies that are comparable to its microscopic scales. This paves the way for realizing exotic quantum phases, such as time crystals or interacting topological phases, in the prethermal regime of interacting Floquet systems. We acknowledge support from the Technical University of Munich - Institute for Advanced Study, funded by the German Excellence Initiative and the European Union FP7 under Grant agreement 291763, and from the DFG Grant No. KN 1254/1-1.

First-principles investigation of quantum transport through an endohedral N@C60 in the Coulomb blockade regime.

Science.gov (United States)

Yu, Zhizhou; Chen, Jian; Zhang, Lei; Wang, Jian

2013-12-11

We report an investigation of Coulomb blockade transport through an endohedral N@C60 weakly coupled with aluminum leads, employing the first-principles method combined with the Keldysh non-equilibrium Green's function derived from the equation of motion beyond the Hartree-Fock approximation. The differential conductance characteristics of the molecular device are calculated within the Coulomb blockade regime, which shows the Coulomb diamond as observed experimentally. When the gate voltage is less than that of the degeneracy point, there are two peaks in the differential conductance with an excited state induced by the change of the exchange interaction between the spin of C60 and the encapsulated nitrogen atom due to the transition from N@C(1-)(60) to N@C(2-)(60), while for a gate voltage larger than that of the degeneracy point, no excited state is available due to the quenching of exchange energy. As a result, there is only one Coulomb blockade peak in the differential conductance from the electron tunneling through the highest energy level below the Fermi level. Our first-principles results are in good agreement with experimental data obtained by an endohedral N@C60 molecular device.

Transport properties of a Kondo dot with a larger side-coupled noninteracting quantum dot

International Nuclear Information System (INIS)

Liu, Y S; Fan, X H; Xia, Y J; Yang, X F

2008-01-01

We investigate theoretically linear and nonlinear quantum transport through a smaller quantum dot in a Kondo regime connected to two leads in the presence of a larger side-coupled noninteracting quantum dot, without tunneling coupling to the leads. To do this we employ the slave boson mean field theory with the help of the Keldysh Green's function at zero temperature. The numerical results show that the Kondo conductance peak may develop multiple resonance peaks and multiple zero points in the conductance spectrum owing to constructive and destructive quantum interference effects when the energy levels of the large side-coupled noninteracting dot are located in the vicinity of the Fermi level in the leads. As the coupling strength between two quantum dots increases, the tunneling current through the quantum device as a function of gate voltage applied across the two leads is suppressed. The spin-dependent transport properties of two parallel coupled quantum dots connected to two ferromagnetic leads are also investigated. The numerical results show that, for the parallel configuration, the spin current or linear spin differential conductance are enhanced when the polarization strength in the two leads is increased

Quantum heating as an alternative of reheating

Science.gov (United States)

Akhmedov, Emil T.; Bascone, Francesco

2018-02-01

To model a realistic situation for the beginning we consider massive real scalar ϕ4 theory in a (1 +1 )-dimensional asymptotically static Minkowski spacetime with an intermediate stage of expansion. To have an analytic headway we assume that scalars have a big mass. At past and future infinities of the background we have flat Minkowski regions which are joint by the inflationary expansion region. We use the tree-level Keldysh propagator in the theory in question to calculate the expectation value of the stress-energy tensor which is, thus, due to the excitations of the zero-point fluctuations. Then we show that even for large mass, if the de Sitter expansion stage is long enough, the quantum loop corrections to the expectation value of the stress-energy tensor are not negligible in comparison with the tree-level contribution. That is revealed itself via the excitation of the higher-point fluctuations of the exact modes: during the expansion stage a nonzero particle number density for the exact modes is generated. This density is not Planckian and serves as a quench which leads to a thermalization in the out Minkowski stage.

Effects of electron-electron interactions on electronic transport in disordered systems

International Nuclear Information System (INIS)

Foley, Simon Timothy

2002-01-01

This thesis is concerned with the role of electron-electron interactions on electronic transport in disordered systems. We first consider a novel non-linear sigma model in order to microscopically treat the effects of disorder and electronic interaction. We successfully reproduce the perturbative results for the zero-bias anomaly and the interaction correction to the conductivity in a weakly disordered system, and discuss possible directions for future work. Secondly we consider the fluctuations of the dephasing rate for a closed diffusive and quantum dot system. Using the Keldysh technique we derive an expression for the inelastic scattering rate with which we self-consistently obtain the fluctuations in the dephasing rate. For the diffusive regime we find the relative fluctuations is given by F ∼ (L φ /L) 2 /g 2 , where g is the dimensionless conductance, L φ is the dephasing length and L is the sample size. For the quantum dot regime we find a perturbative divergence due to the presence of the zero mode. By mapping divergent diagrams to those for the two-level correlation function, we conjecture the existence of an exact relation between the two. Finally we discuss the consequences of this relation. (author)

Relativistic many-body XMCD theory including core degenerate effects

Science.gov (United States)

Fujikawa, Takashi

2009-11-01

A many-body relativistic theory to analyze X-ray Magnetic Circular Dichroism (XMCD) spectra has been developed on the basis of relativistic quantum electrodynamic (QED) Keldysh Green's function approach. This theoretical framework enables us to handle relativistic many-body effects in terms of correlated nonrelativistic Green's function and relativistic correction operator Q, which naturally incorporates radiation field screening and other optical field effects in addition to electron-electron interactions. The former can describe the intensity ratio of L2/L3 which deviates from the statistical weight (branching ratio) 1/2. In addition to these effects, we consider the degenerate or nearly degenerate effects of core levels from which photoelectrons are excited. In XPS spectra, for example in Rh 3d sub level excitations, their peak shapes are quite different: This interesting behavior is explained by core-hole moving after the core excitation. We discuss similar problems in X-ray absorption spectra in particular excitation from deep 2p sub levels which are degenerate in each sub levels and nearly degenerate to each other in light elements: The hole left behind is not frozen there. We derive practical multiple scattering formulas which incorporate all those effects.

Band Gap Distortion in Semiconductors Strongly Driven by Intense Mid-Infrared Laser Fields

Science.gov (United States)

Kono, J.; Chin, A. H.

2000-03-01

Crystalline solids non-resonantly driven by intense time-periodic electric fields are predicted to exhibit unusual band-gap distortion.(e.g., Y. Yacoby, Phys. Rev. 169, 610 (1968); L.C.M. Miranda, Solid State Commun. 45, 783 (1983); J.Z. Kaminski, Acta Physica Polonica A 83, 495(1993).) Such non-perturbative effects have not been observed to date because of the unavoidable sample damage due to the very high intensity required using conventional lasers ( 1 eV photon energy). Here, we report the first clear evidence of laser-induced bandgap shrinkage in semiconductors under intense mid-infrared (MIR) laser fields. The use of long-wavelength light reduces the required intensity and prohibits strong interband absorption, thereby avoiding the damage problem. The significant sub-bandgap absorption persists only during the existence of the MIR laser pulse, indicating the virtual nature of the effect. We show that this particular example of non-perturbative behavior, known as the dynamical Franz-Keldysh effect, occurs when the effective ponderomotive potential energy is comparable to the photon energy of the applied field. This work was supported by ONR, NSF, JST and NEDO.

Eğitim Fakültesi Güzel Sanatlar Eğitimi Bölümü Öğrencilerinin Eleştirel Düşünme Eğilimlerinin Çeşitli Değişkenlerle İlişkisinin İncelenmesi Investigation Of The Relationship Between Critical Thinking Dispositions And Miscellaneous Variables Of The Students Of The Faculty Of Education The Department Of Fine Arts Education

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Onur TOPOĞLU

2013-09-01

students who are teacher candidates have lack ofcritical thinking abilities. One of the primary purposes of universityeducation is to educate the students to make them gained inquisitiveand analytically thinking abilities. Therefore, it is crucial that theteachers of tomorrow have to furnished with all those abilities to be ableto teach and pass the critical thinking abilities to their students. Bu çalışmada, Eğitim Fakültesi Güzel Sanatlar Eğitimi Bölümü öğrencilerinin eleştirel düşünme eğilimleri ile cinsiyetleri, alan başarıları ve akademik başarıları arasındaki ilişkinin ortaya konması amaçlanmıştır. Çalışma, ilişkisel tarama modeline dayalı, betimsel bir araştırmadır. Çalışmada veri toplama aracı olarak kişisel bilgi formu ve Güzel Sanatlar Eğitimi Bölümü öğrencilerinin eleştirel düşünme eğilimlerini ortaya koymak amacıyla ‘California Eleştirel Düşünme Eğilimleri Ölçeği’ (CCTDI kullanılmıştır. Çalışmanın evrenini, Eğitim Fakültesi Güzel Sanatlar Eğitimi Bölümlerinde öğrenim görmekte olan öğrenciler oluştururken örneklemini 2011-2012 bahar yarıyılında Adnan Menderes Üniversitesi Eğitim Fakültesi Müzik Eğitimi Anabilim Dalı ve Resim-iş Anabilim Dalında öğrenim görmekte olan 204 öğrenci oluşturmaktadır. Araştırmanın sonucunda, Eğitim Fakültesi Güzel Sanatlar Eğitimi Bölümü öğrencilerinin eleştirel düşünme eğilimlerinin, alanlarına ve cinsiyetlerine göre anlamlı farklılık göstermediği; ancak müzik bölümünde okuyan kız öğrencilerin açık fikirlilik ve doğruyu arama düzeylerinin erkeklere oranla önemli derecede yüksek olduğu, müzik öğrencilerinin eleştirel düşünme eğilimleri ile akademik başarıları ve alan başarıları arasında önemli ilişki olmadığı belirlenmiştir. Resim öğrencilerinin eleştirel düşünme eğilimleri ile akademik başarıları arasında pozitif yönde yüksek anlamlı ilişki, alan ba

UPAYA MENINGKATKAN KEMAMPUAN MENULIS ILMIAH MAHASISWA S1 FISIOTERAPI UMS DENGAN METODE KOLABORASI PADA TAHUN AKADEMIK 2012/2013

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Laili Etika Rahmawati

2012-08-01

Full Text Available The aims of the research were (1 to apply the collaborative method to improve the academic writing skills of the students; and (2 to improve the academic writing skills of the students through the collaborative method. The type of the research were Classroom Action Research (CAR. The research activity started with the real problems faced by the lecturer in the teaching and learning process followed by the real actions which were measurable. The subjects of the research were the students of S1 Physiotherapy program, Health Science Faculty of Muhammadiyah University of Surakarta in the first semester of the academic year 2012/2013 who were taking the Indonesian subject. The result of the action research shows that by applying the collaborative method, the academic writing skills of the students were improved. This could be seen from their active participation in the classroom and their awareness of the importance of writing skill. The test result indicates the average score was 74, 43, with the maximum score was 97 and the minimum score was 47. The average score of the academic writing before given the actions was 53, 82 with the maximum score was 89 and the minimum score was 25. The average score after the actions increased significantly. It was concluded that the academic writing skills of the students were improved after taught using collaborative method.

HUBUNGAN ANTARA REGULASI DIRI DENGAN PERILAKU PROKRASTINASI AKADEMIK PADA MAHASISWA SEKOLAH TINGGI ILMU KESEHATAN (STIKES MITRA ADIGUNA PALEMBANG

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Fitriya Fitriya

2017-02-01

The results of the analysis obtained correlation coefficient of r = -0.755 and significance of p = 0.000 , it’s mean p <0.01 , so the hypothesis is proven or accepted, it can be concluded that there is a significant negative correlation between self-regulation with academic procrastination behavior in students Science Colleges Health of Mitra Adiguna Palembang.

KINERJA DOSEN DALAM MENINGKATKAN KEMAMPUAN AKADEMIK (HARD SKILL DAN PENGUASAAN KETERAMPILAN (SOFT SKILL PADA MAHASISWA PKK FKIP UNSYIAH

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Zahraini Zahraini

2014-02-01

Full Text Available The performance of the lecturers is important factor in order to ensure the quality management of a college. The lecturers performance at PKK study program FKIP Unsyiahis truly play role in producing students not only work in government with satisfying academic grade (hard skill but also students must be able to create their own work field by possessing skill (soft skills to take over the world work. This study aims at knowing the ability, motivation, disciplines, responsibility, and supporting factors on the lecturers performance in improving academic competence and skill acquisition of the students at PKK, FKIP Unsyiah. This study used a qualitative approach through data collecting techniques i.e. documentation, observations , and interviews. The subjects of the research were the dean, deputy dean of academic affairs, the chairman of the PKK department, lecturers, laboratory chairman, and students. This study shows that 1 The ability of the lecturers in carrying out teaching can be seen through arrangement of the lecturing material, lecturing implementation, and evaluation. 2 Motivation in conducting lectures , that the PKK lecturers of FKIP Unsyiah have conducted real efforts to reach the decided aim, but few lecturers less motivated the students optimally, lack of guiding of the lecturers or their seniors as well as program chairman, action less than optimal motivation lecturer , received guidance from lecturers more senior or chief Prodi . 3 The lecturers discipline is reflected through factual time in implementing the lecture, obeying the obtain rules and conducting continuously. Lecturer’s discipline reflected by timeliness in implementing the course, follow the rules, and do it continuously. 4 The lecturer’s responsibility and commitment in implementing the lecturer can be seen through guiding the students in accordance with the main duty and its function. 5 Improving performance in academic competence and skill acquisition are supported by several factors such as faculty development program by sending lecturers to follow the profession asosiation programs, workshops, seminars , and training on professional development.

Pengaruh Supervisi Akademik Pengawas Sekolah Dan Motivasi Kerja Guru Terhadap Kompetensi Profesional Guru Matematika Sekolah Menengah Atas Negeri

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Khairiyah Daming

2017-01-01

The study aims to discover; (i) the implementation of academic supervision of school supervisor; (ii) teachers’ work motivation, (iii) professional competence of Mathematics teachers of SMAN (Public Senior High School), (iv) the influence of the implementation of academic supervision of school supervisor and teachers, work motivation simultaneously toward professional competence of Mathematics teacher of SMAN, (v) the influence of implementation of academics supervision of school supervisor t...

Öğretmen Adaylarının Akademik Başarılarının Sınıflandırılmasında Lojistik Regresyon Analizi Yaklaşımı Logistic Regression Analysis Approach To The Classification Of As Pre-Service Teachers’academic Success

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Elif BAHADIR

2013-09-01

�ğretmenliği öğrencilerinin Genel Matematik, Soyut Matematik, Analiz-I, Analiz-II, Geometri, Liner Cebir-I, Analiz3,Özel öğretim Yöntemleri2, Elementer Sayı Kuramı, Cebire Giriş, Problem Çözme derslerine ilişkin başarı değişkenlerinin, öğrencilerin lisansüstü eğitim başarılarını hangi doğruluk düzeyinde sınıflayabildiğinin belirlenmesi amaçlanmıştır.Araştırma ilişkisel tarama modelinde desenlenmiştir. Marmara Üniversitesi Eğitim Bilimleri Enstitüsü ve Marmara Üniversitesi Atatürk Eğitim Fakültesinde okuyan/mezun olmuş öğrencilerinden yansız olarak seçilen toplam 139 ilköğretim matematik öğretmeni adayı araştırmanın örneklemini oluşturmaktadır.Çalışmamızın amacı farklı sektörlerde de etkili bir öngörü metodu olarak yararlanılan Lojistik Regresyon Analizi (LRA’ni eğitim alanında klasik yöntemlere bir alternatif olarak kullanıp, öğrencilerin lisansüstü eğitim başarılarına yönelik etkili bir tahmin gerçekleştirebilmektir.Araştırmada bağımlı değişken kategorik bir yapıda olduğu için lojistik regresyon analizi tekniğinden yararlanılmıştır. Öğrencilerin lisansüstü eğitimde başarılı olup olmama olasılıklarının kestiriminde kullanılan değişkenlerin belirlenmesi amacıyla lojistik regresyon analizi yapılarak onbir(11 değişken analize dâhil edilmiştir.Öğretmen adaylarının akademik başarı tahminlerini gerçekleştirme sürecinde öğrencilerin; lisans eğitimleri süresince belirlenen derslerden aldıkları geçme notları dikkate alınmış Ve Marmara Üniversitesi Eğitim Fakültesi İlköğretim Matematik öğretmenliği öğrencilerine ait veriler tahmin edici değişkenler olarak kullanılıp, öğrencilerin lisansüstü eğitime yönelik başarıları öngörülmeye çalışılmıştır.Elde edilen lojistik regresyon modelinde gözlemlerin doğru sınıflandırma oranlarının %92 olduğu görülmektedir. Araştırma bulgularına göre lisansüstü e

BELAJAR BERDASAR REGULASI DIRI DALAM PEMBELAJARAN DI PERGURUAN TINGGI

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St. Nurjannah Yunus Tekeng

2015-06-01

Full Text Available Abstract: Self-regulated learning is very important for university students to adapt with their academic demand and it is very critical in the lifelong learning process that allow them to face later real life challenges. It refers to their active role in taking responsibility with their learning or their active activities in directing themselves in learning and regulating many areas such as their cognitive, behavior, context, and motivation in order to achieve their learning goals. Self-Regulated learning is based on social cognitive theory and factor affecting it which is explained in the reciprocal triadic between individual, behavior, and environment. Besides, the positive influences of self-regulated learning on students learning have been supported by many empirical evidences. Abstrak: Belajar berdasar regulasi diri sangat penting bagi mahasiswa untuk dapat beradaptasi dengan tuntutan akademik dan sangat penting dalam proses pembelajaran seumur hidup untuk beradaptasi dengan tantangan hidup di masa depan. Belajar berdasar regulasi diri mengacu kepada peran aktif mereka dalam mengambil tanggung jawab dalam belajar atau kegiatan aktif dalam menga­rah­kan diri dalam belajar dengan meregulasi berbagai area seperti kognitif, perilaku, konteks, dan motivasi untuk mencapai tujuan pembelajarannya. Belajar berdasar regulsi diri didasarkan pada teori sosial kognitif dan faktor yang berngaruh dijelaskan dengan hubungan triadik resiprokal antara individu, perilaku, dan lingkungan. Selain itu, pengaruh positif belajar berdasar regulasi diri terhadap pembelajaran telah didukung oleh bukti empiris.

PENGUKURAN KUALITAS LAYANAN DENGAN HIGHER EDUCATION PERFORMANCE (HEdPERF DAN HIGHER EDUCATION SERVICE QUALITY (HiEdQUAL

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Ika Widya Ardhyani

2017-06-01

Full Text Available Kualitas layanan merupakan kunci sukses dalam pemasaran dan bisnis strategi. Peningkatan kualitas layanan terhadap perguruan tinggi merupakan hal yang perlu mendapatkan prioritas, karena kualitas layanan berhubungan erat dengan peningkatan keuntungan kompetitif. UMAHA merupakan universitas swasta di Sidoarjo. Sejak didirikan tahun 1998 hingga 2015 animo masyarakat terhadap UMAHA terus mengalami peningkatan hal ini ditunjukkan dengan semakin meningkatnya jumlah mahasiswa yang mendaftar. Namun disisi lain masih terjadi keluhan-keluhan terhadap pelayanan akademik. Berdasarkan hal tersebut, maka pengukuran kualitas layanan pendidikan yang akurat sangat penting dilakukan untuk mendapatkan gambaran yang lebih baik dan menjadi pedoman dalam melakukan suatu perbaikan. Item-item dalam penelitian ini diadaptasi dari instrumen HEdPERF dan HiEdQUAL. Pengukuran kualitas layanan dalam penelitian ini akan dilakukan dengan responden dosen, staf administrasi dan mahasiswa sebagai pelanggan perguruan tinggi. Kuesioner digunakan untuk memperoleh data, berupa harapan dan persepsi. Teknik pengambilan sampel yang digunakan dalam penelitian ini adalah cluster sampling. Data yang diperoleh dianalisis dengan menggunakan uji validitas dan uji reliabilitas. Kualitas layanan akan di ukur dengan menggunakan model diskonfirmasi SERVQUAL, yang mendefinisikan kualitas dalam hal perbedaan yang muncul antara harapan pelanggan dan persepsi layanan yang sebenarnya. Hasil perhitungan skor SERVQUAL untuk ketiga responden, menunjukkan masing-masing item belum dapat memenuhi harapan pelanggan. Hal ini ditunjukkan dengan hasil perhitungan semua item yang bernilai negatif.

Observations of atmospheric lead-210 over the Atlantic Ocean and Antarctica during the FINNARP-1999/2999 Expedition

International Nuclear Information System (INIS)

Paatero, J.; Virkkula, A.; Hillamo, R.; Koponen, I.

2002-01-01

Physical and chemical properties of the atmosphere were measured in November-December 1999 onboard the Russian research vessel Akademik Fedorov over the Atlantic Ocean between the English Channel and the coast of Antarctica. After the cruise the measurements were continued in January 2000 at the Finnish research station Aboa (73 deg. 03'S, 13 deg. 25'W, 470 m above sea level) in Dronning Maud Land, Antarctica. The location of the station is about 170 km inland from the coast of Weddell Sea. The study is part of the Finnish Antarctic Research Programme (FINNARP) financed by the Academy of Finland. The observed 210 Pb activity concentrations in the air varied between 24 and 790 μBq/m 3 during the cruise between the English Channel and Cape town. The highest values were recorded close ( 210 Pb activity concentrations varied between 3 . At the research station Aboa the observed values varied between 3 . Between 6 and 11 January 2000 the air masses at Aboa originated from central regions of Antarctica according to the trajectory calculations made with the NORA Hysplit model. The concentrations were below detection limit between 11 and 14 January. These samples were connected to the air masses originating from the South Atlantic Ocean. Between 14 and 20 January air masses came to Aboa mainly from easterly direction from coastal and inland regions of the Antarctica. (LN)

Pengaruh Strategi SQ4R Tipe Bantuan Multimedia vs Buku Teks, Pengetahuan Awal, Gaya Belajar Kolb terhadap Hasil Belajar Bahasa Inggris Teknik

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Meiti Leatemia

2014-06-01

Full Text Available Penelitian ini bertujuan menyelidiki pengaruh strategi SQ4R tipe bantuan multimedia versus buku teks, pengetahuan awal dan gaya belajar terhadap hasil belajar bahasa Inggris Teknik. Subjek penelitian adalah 96 mahasiswa  Teknik Sipil dan Mesin Politeknik Negeri Ambon tahun akademik 2011-2012. Desain eksperimen menggunakan kuasi versi  factorial  (2 x 2 x 2 pre test-post test non-equivalent control group design. Analisis data menggunakan statistik Three Ways ANOVA. Pengujian hipotesis dilakukan pada taraf signifikansi 5% atau á=0,5  menggunakan SPSS 17.0 for windows. Hasil penelitian menunjukan bahwa (1 Ada perbedaan yang signifikan hasil belajar  antara kelompok strategi SQ4R tipe bantuan multimedia dan buku teks, (2 ada perbedaan yang signifikan hasil belajar antara kelompok pengetahuan awal tinggi dan rendah, (3 tidak ada perbedaan yang signifikan antara pembelajar diverger dan assimilator,  (4 tidak ada pengaruh interaksi antara strategi SQ4R tipe bantuan dengan pengetahuan awal terhadap hasil belajar, (5 tidak ada pengaruh interaksi antara strategi SQ4R tipe bantuan dengan gaya belajar terhadap hasil belajar, (6 ada pengaruh interaksi an-tara pengetahuan awal dengan gaya belajar terhadap hasil belajar, dan, (7 ada pengaruh interaksi antara strategi SQ4R tipe bantuan, pengetahuan awal dan gaya belajar terhadap hasil belajar. Kata kunci: strategi SQ4R tipe bantuan, multimedia, pengetahuan awal, gaya belajar,  hasil  belajar

PERANCANGAN DAN IMPLEMENTASI SISTEM PENGUKURAN KINERJA DENGAN METODE INTEGRATED PERFORMANCE MEASUREMENT SYSTEMS (Studi Kasus: Jurusan Teknik Mesin Universitas Mataram

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Bambang Syairuddin

2007-01-01

Full Text Available To assure the quality of education in the Department of Mechanical Engineering, we need to design an integrated performance measurement system. For that purpose, we used the IPMS (Integrated Performance Measurement Systems method. Using the IPMS method, Key Performance Indicators (KPIs of the Department of Mechanical Engineering were determined by pursuant to stakeholder requirement through four steps. Those are identifying the stakeholder requirement, external monitor, stipulating objectives, and identification of KPIs. Performance measurement system with the IPMS method in the Department of Mechanical Engineering of Mataram University can be identified into 38 KPIs grouped in 9 criterias of performance of the Department of Mechanical Engineering, that are curriculum, student, financial, human resources, administration academic, teaching and learning, alumnus, evaluation and operation, and external party. Abstract in Bahasa Indonesia : Untuk menjamin kualitas pendidikan di Jurusan Teknik Mesin, diperlukan sebuah rancangan sistem pengukuran kinerja (SPK yang terintegrasi dengan metode IPMS (Integrated Performance Measurement Systems. Dengan metode IPMS, Key Performance Indicators (KPI Jurusan Teknik Mesin ditentukan berdasarkan stakeholder requirement melalui empat tahapan yaitu; identifikasi stakeholder requirement, external monitor, penetapan objectives, dan identifikasi KPIs. Hasil perancangan SPK di Jurusan Teknik Mesin Universitas Mataram, dapat mengidentifikasi 38 KPIs yang dikelompokkan dalam 9 kriteria kinerja Jurusan Teknik Mesin, yaitu; kurikulum, mahasiswa, finansial, SDM, administrasi akademik, proses pembelajaran, alumni, evaluasi dan pengendalian, dan external party. Kata Kunci : Sistem Pengukuran Kinerja, IPMS, Teknik Mesin Unram.

Development of Modern Marathons and Distance Running

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Sasho Belovski

2014-07-01

Moderní marathon a distanční běh zažívají výrazný rozmach a přitahují stále větší zájem všech zainteresovaných osob – stakeholderů běžeckého sportu. Můžeme však konstatovat, že mezi aktivními běžci jakož i mezi dalšími lidmi, kteří jsou přímo či nepřímo s distančním během spojeni, nejsou vědomosti o jeho současném rozvoji příliš hluboké. Tato práce chce nabídnout vybrané, zásadní události moderní historie distančního běhu, a sloužit tak nejen zaníceným aktivním běžcům a organizátorům běžeckých závodů, ale též historikům, studentům a akademikům jako zdroj užitečných informací a základ pro budoucí vědeckou činnost.

An important rule for realizing metal → half-metal → semiconductor transition in single-molecule junctions

Science.gov (United States)

Zeng, Jing; Chen, Ke-Qiu; Long, Mengqiu

2017-06-01

Recently, Zhong et al (2015 Nano Lett. 15 8091) found that two additional hydrogen atoms can be adsorbed to the opposite aza-bridging nitrogen atoms of the manganese phthalocyanine (MnPc) macrocycle when exposed to H2. Thus the symmetry of the MnPc molecule is changed from 4-fold to 2-fold. Motivated by this recent experiment, we theoretically investigate a MnPc-based single-molecule junction in this work and propose a simple and reliable way to realize the transition of its electronic properties. On the basis of spin-polarized density-functional theory calculations combined with the Keldysh nonequilibrium Green’s technique, we find that the gradual hydrogenation in MnPc molecules gives rise to the changes of the hardness of the electron density and spin-selective orbital decoupling, which eventually leads to the realization of the first ever metal  →  half-metal  →  semiconductor transition behavior in single-molecule junctions. Analysis of molecular projected self-consistent Hamiltonian, Mulliken population, and local density of states also reveals an important rule for realizing this transition behavior. Our research confirms that the hydrogenation of MnPc molecules can realize various molecular functionalities in unitary material background.

Electric field influence on exciton absorption of Er doped and undoped InSe single crystals

International Nuclear Information System (INIS)

Guerbulak, B; Kundakci, M; Ates, A; Yildirim, M

2007-01-01

Undoped InSe and Er doped InSe (InSe:Er) single crystals were grown by using the Stockbarger method. Ingots had no cracks and voids on the surface. The absorption measurements were carried out in InSe and InSe:Er samples for U=0 and U=30 V in the temperature range 10-320 K with a step of 10 K. Electric field effects on excitons are observed in InSe and InSe:Er single crystals. The absorption edge shifted towards longer wavelengths and decreased intensity in absorption spectra under an electric field E≅5.9 kV cm -1 . The applied electric field caused a shifting and a decreasing of intensity in the absorption spectra. The shifting of the absorption edge can be explained on the basis of the Franz-Keldysh effect (FKE) or thermal heating of the sample under the electric field. At 10 and 320 K, the first exciton energies for InSe were calculated as 1.336 and 1.291 eV for zero voltage and 1.331 and 1.280 eV for electric field and InSe:Er as 1.329 and 1.251 eV for zero voltage and 1.318 and 1.248 eV for electric field, respectively

Analytical Solution for Interface Flow to a Sink With an Upconed Saline Water Lens: Strack's Regimes Revisited

Science.gov (United States)

Kacimov, A. R.; Obnosov, Y. V.

2018-01-01

A study is made of a steady, two-dimensional groundwater flow with a horizontal well (drain), which pumps out freshwater from an aquifer sandwiched between a horizontal bedrock and ponded soil surface, and containing a lens-shaped static volume of a heavier saline water (DNAPL-dense nonaqueous phase liquid) as a free surface. For flow toward a line sink, an explicit analytical solution is obtained by a conformal mapping of the hexagon in the complex potential plane onto a reference plane and the Keldysh-Sedov integral representation of a mixed boundary-value problem for a complex physical coordinate. The interface is found as a function of the pumping rate, the well locus, the ratio of liquid densities, and the hydraulic heads at the soil surface and in the well. The shape with two inflexion points and fronts varies from a small-thickness bedrock-spread pancake to a critical curvilinear triangle, which cusps toward the sink. The problem is mathematically solvable in a relatively narrow band of geometric and hydraulic parameters. A similar analytic solution for a static heavy bubble confined by a closed-curve interface (no contact with the bedrock) is outlined as an illustration of the method to solve a mixed boundary-value problem.

Spin-polarized current generated by magneto-electrical gating

International Nuclear Information System (INIS)

Ma Minjie; Jalil, Mansoor Bin Abdul; Tan, Seng Ghee

2012-01-01

We theoretically study spin-polarized current through a single electron tunneling transistor (SETT), in which a quantum dot (QD) is coupled to non-magnetic source and drain electrodes via tunnel junctions, and gated by a ferromagnetic (FM) electrode. The I–V characteristics of the device are investigated for both spin and charge currents, based on the non-equilibrium Green's function formalism. The FM electrode generates a magnetic field, which causes a Zeeman spin-splitting of the energy levels in the QD. By tuning the size of the Zeeman splitting and the source–drain bias, a fully spin-polarized current is generated. Additionally, by modulating the electrical gate bias, one can effect a complete switch of the polarization of the tunneling current from spin-up to spin-down current, or vice versa. - Highlights: ► The spin polarized transport through a single electron tunneling transistor is systematically studied. ► The study is based on Keldysh non-equilibrium Green's function and equation of motion method. ► A fully spin polarized current is observed. ► We propose to reverse current polarization by the means of gate voltage modulation. ► This device can be used as a bi-polarization current generator.

How to Modernize the Academic Museum. Exhibition Activity of the Museum Group the ARAS as a Pilot Project of the Museum of History of Russian Academy of Science

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Korneva-Chaeva Irina A.

2016-09-01

Full Text Available The article on the example of the Museum group of Archives of Russian Academy of Science is demonstrating new possibilities of representation of archival documents in the museum space. The authors focused on the potential exposure of the museum based on the principle of visualization. They explain the special role of representing scientific knowledge for education of youth. They offer a new form of interactive communication with the museum’s scientific heritage, based on the method of comprehending the reality as a “co-experience” and “re-discovery” that leads to the attainment the new generation to the new intellectual and spiritual experience. The experiment, the research paper, the science, the war, and even the modern art are the main themes of our exhibitions. The authors use the special new methods of exhibition to create the intriguing image of scientist. They use light boxes and interactive demonstrations. The main aim of the exposition is to show the documents of Archives of Russian Academy of Science, so we rely on the following materials: personal fond of academicians A.N. Nesmeyanov, V.L. Komarov, M.V. Keldysh, I.V. Kurchatov and others. Authors successfully solve the problems of the development of new theoretical principles exposing archival documents by modern methods.

High-temperature carrier density and mobility enhancements in AlGaN/GaN HEMT using AlN spacer layer

Science.gov (United States)

Ko, Tsung-Shine; Lin, Der-Yuh; Lin, Chia-Feng; Chang, Che-Wei; Zhang, Jin-Cheng; Tu, Shang-Ju

2017-04-01

In this paper, we experimentally studied the effect of AlN spacer layer on optical and electrical properties of AlGaN/GaN high electric mobility transistors (HEMTs) grown by metal organic chemical vapor deposition method. For AlGaN layer in HEMT structure, the Al composition of the sample was determined using x-ray diffraction and photoluminescence. Electrolyte electro-reflectance (EER) measurement not only confirmed the aluminum composition of AlGaN layer, but also determined the electric field strength on the AlGaN layer through the Franz-Keldysh oscillation phenomenon. This result indicated that the electric field on the AlGaN layer could be improved from 430 to 621 kV/cm when AlN spacer layer was inserted in HEMT structure, which increased the concentration of two dimensional electron gas (2DEG) and improve the mobility. The temperature dependent Hall results show that both the mobility and the carrier concentration of 2DEG would decrease abruptly causing HEMT loss of function due to phonon scattering and carrier thermal escape when temperature increases above a specific value. Meanwhile, our study also demonstrates using AlN spacer layer could be beneficial to allow the mobility and carrier density of 2DEG sustaining at high temperature region.

A plane-wave final-state theory of ATI

International Nuclear Information System (INIS)

Parker, J.S.; Clark, C.W.

1993-01-01

A Fermi Golden Rule calculation of ionization cross-sections provides us with the simplest example of a plane-wave final-state theory. In this method the final (unbound) state is modeled as a plane wave, an approximation that generally gives best results in the high energy limit in which the affect of the atomic potential on the final state can be neglected. A cross-section is then calculated from the matrix element connecting the bound initial state with the final state. The idea of generalizing this method to model transitions among unbound states is credited to L.V. Keldysh, and a number of related formalisms have been proposed that are consistent with the general features of experimental data. Here we describe a plane-wave final-state model of ATI that is in the spirit of these theories, but differs significantly in its implementation and predictions. We will present a comparison of the predictions of the plane-wave model with those of a full numerical integration of the time-dependent Schrodinger equation for atomic hydrogen in a radiation field. The theory and the numerical integration give good qualitative agreement in their predictions of photoelectron spectra over about 14 orders of magnitude

Systematic approach to leptogenesis in nonequilibrium QFT: Vertex contribution to the CP-violating parameter

International Nuclear Information System (INIS)

Garny, M.; Hohenegger, A.; Kartavtsev, A.; Lindner, M.

2009-01-01

The generation of a baryon asymmetry via leptogenesis is usually studied by means of classical kinetic equations whose applicability to processes in the hot and expanding early universe is questionable. The approximations implied by the state-of-the-art description can be tested in a first-principle approach based on nonequilibrium field theory techniques. Here, we apply the Schwinger-Keldysh/Kadanoff-Baym formalism to a simple toy model of leptogenesis. We find that, within the toy model, medium effects increase the vertex contribution to the CP-violating parameter. At high temperatures it is a few times larger than in vacuum and asymptotically reaches the vacuum value as the temperature decreases. Contrary to the results obtained earlier in the framework of thermal field theory, the corrections are only linear in the particle number densities. An important feature of the Kadanoff-Baym formalism is that it is free of the double-counting problem, i.e. no need for real intermediate state subtraction arises. In particular, this means that the structure of the equations automatically ensures that the asymmetry vanishes in equilibrium. These results give a first glimpse into a number of new and interesting effects that can be studied in the framework of nonequilibrium field theory.

Electroweak baryogenesis in extensions of the standard model

International Nuclear Information System (INIS)

Fromme, L.

2006-01-01

We investigate the generation of the baryon asymmetry in two extensions of the Standard Model; these are the Φ 6 and the two-Higgs-doublet model. Analyzing the thermal potential in the presence of CP violation, we find a strong first order phase transition for a wide range of parameters in both models. We compute the relevant bubble wall properties which then enter the transport equations. In non-supersymmetric models electroweak baryogenesis is dominated by top transport, which we treat in the WKB approximation. We calculate the CP-violating source terms starting from the Dirac equation. We show how to resolve discrepancies between this treatment and the computation in the Schwinger-Keldysh formalism. Furthermore, we keep inelastic scatterings of quarks and W bosons at a finite rate, which considerably affects the amount of the generated baryon asymmetry depending on the bubble wall velocity. In addition, we improve the transport equations by novel source terms which are generated by CP-conserving perturbations in the plasma. It turns out that their effect is relatively small. Both models under consideration predict a baryon to entropy ratio close to the observed value for a large part of the parameter space without being in conflict with constraints on electric dipole moments. (orig.)

Electroweak baryogenesis in extensions of the standard model

Energy Technology Data Exchange (ETDEWEB)

Fromme, L.

2006-07-07

We investigate the generation of the baryon asymmetry in two extensions of the Standard Model; these are the {phi}{sup 6} and the two-Higgs-doublet model. Analyzing the thermal potential in the presence of CP violation, we find a strong first order phase transition for a wide range of parameters in both models. We compute the relevant bubble wall properties which then enter the transport equations. In non-supersymmetric models electroweak baryogenesis is dominated by top transport, which we treat in the WKB approximation. We calculate the CP-violating source terms starting from the Dirac equation. We show how to resolve discrepancies between this treatment and the computation in the Schwinger-Keldysh formalism. Furthermore, we keep inelastic scatterings of quarks and W bosons at a finite rate, which considerably affects the amount of the generated baryon asymmetry depending on the bubble wall velocity. In addition, we improve the transport equations by novel source terms which are generated by CP-conserving perturbations in the plasma. It turns out that their effect is relatively small. Both models under consideration predict a baryon to entropy ratio close to the observed value for a large part of the parameter space without being in conflict with constraints on electric dipole moments. (orig.)

Nonequilibrium dynamics of moving mirrors in quantum fields: Influence functional and the Langevin equation

International Nuclear Information System (INIS)

Wu, C.-H.; Lee, D.-S.

2005-01-01

We employ the Schwinger-Keldysh formalism to study the nonequilibrium dynamics of the mirror with perfect reflection moving in a quantum field. In the case where the mirror undergoes the small displacement, the coarse-grained effective action is obtained by integrating out the quantum field with the method of influence functional. The semiclassical Langevin equation is derived, and is found to involve two levels of backreaction effects on the dynamics of mirrors: radiation reaction induced by the motion of the mirror and backreaction dissipation arising from fluctuations in quantum field via a fluctuation-dissipation relation. Although the corresponding theorem of fluctuation and dissipation for the case with the small mirror's displacement is of model independence, the study from the first principles derivation shows that the theorem is also independent of the regulators introduced to deal with short-distance divergences from the quantum field. Thus, when the method of regularization is introduced to compute the dissipation and fluctuation effects, this theorem must be fulfilled as the results are obtained by taking the short-distance limit in the end of calculations. The backreaction effects from vacuum fluctuations on moving mirrors are found to be hardly detected while those effects from thermal fluctuations may be detectable

An important rule for realizing metal → half-metal → semiconductor transition in single-molecule junctions

International Nuclear Information System (INIS)

Zeng, Jing; Chen, Ke-Qiu; Long, Mengqiu

2017-01-01

Recently, Zhong et al (2015 Nano Lett . 15 8091) found that two additional hydrogen atoms can be adsorbed to the opposite aza-bridging nitrogen atoms of the manganese phthalocyanine (MnPc) macrocycle when exposed to H 2 . Thus the symmetry of the MnPc molecule is changed from 4-fold to 2-fold. Motivated by this recent experiment, we theoretically investigate a MnPc-based single-molecule junction in this work and propose a simple and reliable way to realize the transition of its electronic properties. On the basis of spin-polarized density-functional theory calculations combined with the Keldysh nonequilibrium Green’s technique, we find that the gradual hydrogenation in MnPc molecules gives rise to the changes of the hardness of the electron density and spin-selective orbital decoupling, which eventually leads to the realization of the first ever metal  →  half-metal  →  semiconductor transition behavior in single-molecule junctions. Analysis of molecular projected self-consistent Hamiltonian, Mulliken population, and local density of states also reveals an important rule for realizing this transition behavior. Our research confirms that the hydrogenation of MnPc molecules can realize various molecular functionalities in unitary material background. (paper)

Full-counting statistics of energy transport of molecular junctions in the polaronic regime

International Nuclear Information System (INIS)

Tang, Gaomin; Yu, Zhizhou; Wang, Jian

2017-01-01

We investigate the full-counting statistics (FCS) of energy transport carried by electrons in molecular junctions for the Anderson–Holstein model in the polaronic regime. Using the two-time quantum measurement scheme, the generating function (GF) for the energy transport is derived and expressed as a Fredholm determinant in terms of Keldysh nonequilibrium Green’s function in the time domain. Dressed tunneling approximation is used in decoupling the phonon cloud operator in the polaronic regime. This formalism enables us to analyze the time evolution of energy transport dynamics after a sudden switch-on of the coupling between the dot and the leads towards the stationary state. The steady state energy current cumulant GF in the long time limit is obtained in the energy domain as well. Universal relations for steady state energy current FCS are derived under a finite temperature gradient with zero bias and this enabled us to express the equilibrium energy current cumulant by a linear combination of lower order cumulants. The behaviors of energy current cumulants in steady state under temperature gradient and external bias are numerically studied and explained. The transient dynamics of energy current cumulants is numerically calculated and analyzed. Universal scaling of normalized transient energy cumulants is found under both temperature gradient and external bias. (paper)

Stopping dynamics of ions passing through correlated honeycomb clusters

Science.gov (United States)

Balzer, Karsten; Schlünzen, Niclas; Bonitz, Michael

2016-12-01

A combined nonequilibrium Green functions-Ehrenfest dynamics approach is developed that allows for a time-dependent study of the energy loss of a charged particle penetrating a strongly correlated system at zero and finite temperatures. Numerical results are presented for finite inhomogeneous two-dimensional Fermi-Hubbard models, where the many-electron dynamics in the target are treated fully quantum mechanically and the motion of the projectile is treated classically. The simulations are based on the solution of the two-time Dyson (Keldysh-Kadanoff-Baym) equations using the second-order Born, third-order, and T -matrix approximations of the self-energy. As application, we consider protons and helium nuclei with a kinetic energy between 1 and 500 keV/u passing through planar fragments of the two-dimensional honeycomb lattice and, in particular, examine the influence of electron-electron correlations on the energy exchange between projectile and electron system. We investigate the time dependence of the projectile's kinetic energy (stopping power), the electron density, the double occupancy, and the photoemission spectrum. Finally, we show that, for a suitable choice of the Hubbard model parameters, the results for the stopping power are in fair agreement with ab initio simulations for particle irradiation of single-layer graphene.

Laser-assisted spin-polarized transport in graphene tunnel junctions

International Nuclear Information System (INIS)

Ding Kaihe; Zhu Zhengang; Berakdar, Jamal

2012-01-01

The Keldysh nonequilibrium Green’s function method is utilized to theoretically study spin-polarized transport through a graphene spin valve irradiated by a monochromatic laser field. It is found that the bias dependence of the differential conductance exhibits successive peaks corresponding to the resonant tunneling through the photon-assisted sidebands. The multi-photon processes originate from the combined effects of the radiation field and the graphene tunneling properties, and are shown to be substantially suppressed in a graphene spin valve which results in a decrease of the differential conductance for a high bias voltage. We also discuss the appearance of a dynamical gap around zero bias due to the radiation field. The gap width can be tuned by changing the radiation electric field strength and the frequency. This leads to a shift of the resonant peaks in the differential conductance. We also demonstrate numerically the dependences of the radiation and spin valve effects on the parameters of the external fields and those of the electrodes. We find that the combined effects of the radiation field, the graphene and the spin valve properties bring about an oscillatory behavior in the tunnel magnetoresistance, and this oscillatory amplitude can be changed by scanning the radiation field strength and/or the frequency. (paper)

Magnetic field effect on the laser-driven density of states for electrons in a cylindrical quantum wire: transition from one-dimensional to zero-dimensional behavior

International Nuclear Information System (INIS)

Lima, C P; Lima, F M S; Fonseca, A L A; Nunes, O A C

2011-01-01

The influence of a uniform magnetic field on the density of states (DoS) for carriers confined in a cylindrical semiconductor quantum wire irradiated by a monochromatic, linearly polarized, intense laser field is computed here non-perturbatively, following the Green's function scheme introduced by some of the authors in a recent work (Lima et al 2009 Solid State Commun. 149 678). Besides the known changes in the DoS provoked by an intense terahertz laser field-namely, a significant reduction and the appearance of Franz-Keldysh-like oscillations-our model reveals that the inclusion of a longitudinal magnetic field induces additional blueshifts on the energy levels of the allowed states. Our results show that the increase of the blueshifts with the magnitude of the magnetic field depends only on the azimuthal quantum number m (m=0, 1, 2, ...), being more pronounced for states with higher values of m, which leads to some energy crossovers. For all states, we have obtained, even in the absence of a magnetic field, a localization effect that leads to a transition in the DoS from the usual profile of quasi-1D systems to a peaked profile typical of quasi-0D systems, as e.g. those found for electrons confined in a quantum dot.

PENGARUH PERFEKSIONISME TERHADAP PROKRASTINASI AKADEMIK PADA MAHASISWA YANG SEDANG MENGERJAKAN SKRIPSI DI FAKULTAS PSIKOLOGI UIN SUNAN GUNUNG DJATI BANDUNG

OpenAIRE

Titih Srantih

2016-01-01

Academic procrastination particularly happens to college students who are working on their thesis is assumed to be influenced by the attitude of their perfectionism. The purpose of this study is to determine how perfectionism has influence on the academic procrastination of the students who are doing thesis at the Faculty of Psychology UIN Sunan Gunung Djati Bandung. The study had conducted on the population of students who are working on a thesis in total 38 people. The design used was a non...

PELAKSANAAN NILAI DEMOKRASI DI KALANGAN MAHASISWA (Studi Kasus Pada Mahasiswa Program Studi PKN FKIP UMS Tahun Akademik 2014/ 2014

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Sri Gunarsi

2015-08-01

Full Text Available The aim of the research is to describe the conducting of democracy values on students’ community in study program of Pancasila and kewarganegaraan education of FKIP-UMS in 2013/2014 Academic Year. The kind of research is qualitative with single case study strategy. Technique of data collection is by using interview, observation, and documentation. Data validity is by using technique and source of triangulation. Data analysis is by using interactive analysis. The research result showed that the conducting of democracy values on students’ community in study program of Pancasila and kewarganegaraan education of FKIP-UMS can be seen from the teaching learning process activity. The forms of conducting democracy values on students’ community in study program of Pancasila and kewarganegaraan education of FKIP-UMS were showed by: 1Doing discussion with other students on teaching learning process in the classroom; 2 Giving input or opinion to other students on classroom discussion; 3 Receiving advice or critique from other students on classroom discussion; 4 Taking decision with cooperation towards things that have linked with academic activity outside the classroom; 5 Doing discussion with other students in doing group duty outside the classroom.

PENGARUH PERFEKSIONISME TERHADAP PROKRASTINASI AKADEMIK PADA MAHASISWA YANG SEDANG MENGERJAKAN SKRIPSI DI FAKULTAS PSIKOLOGI UIN SUNAN GUNUNG DJATI BANDUNG

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Titih Srantih

2016-02-01

Full Text Available Academic procrastination particularly happens to college students who are working on their thesis is assumed to be influenced by the attitude of their perfectionism. The purpose of this study is to determine how perfectionism has influence on the academic procrastination of the students who are doing thesis at the Faculty of Psychology UIN Sunan Gunung Djati Bandung. The study had conducted on the population of students who are working on a thesis in total 38 people. The design used was a non-experimental design with causality method. Measuring instruments used the Almost Perfect Scale Revised from Snaley (1992 and Procrastination Student Assessment Scale developed by Solomon and Rothblum (1984 with some adaptations. Technical analysis of the data using simple regression analysis with the result that the determination coefficient of influence perfectionism to academic procrastination is R2 = 0.065. The results of the t test, t = 1.582 < table = 1.684, so it can be concluded that there is no significant effect of perfectionism to the academic procrastination of students who are working on a thesis.

Coğrafya Konuların Öğretiminde Materyal Kullanımının Öğrenci Başarısına Etkisi: Bir Meta Analiz Çalışması / The Effect of the Usage of Instructional Materials on Student Achievement in Teaching Geography: A Meta-analytic Study

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Yusuf İnel

2017-06-01

Full Text Available Abstract This study aims to combine the results of independent studies in order to reveal the impact of the usage of instructional materials in teaching geography subjects on students’ achievement. We have tried to answer the question “Do the instructional materials in teaching geography subjects impact on students’ achievement?”. The study is performed via meta-analysis. The total sampling size obtained from 31 studies included in analysis. The data were analyzed using STATA 13. and CMA 3 programs. When analyzing the data, the values of standard deviation, arithmetic average and sampling size of postest measures of control and experimental groups in each study were used. The results of this study indicate that the usage of instructional materials in the teaching geography subjects impacts positively on students’ achievementat at wider effect size. They also show that there is no any statistically difference among effect size by sampling stage (high school, the material type used, research type, and publication years of studies.  Öz Bu çalışmada, coğrafya konuların öğretilmesinde kullanılan materyallerin öğrenci başarısı üzerindeki etkisinin tespit edilmesine yönelik yapılmış birbirinden bağımsız çalışmalardan elde edilen sonuçların birleştirilmesi amaçlanmıştır. Bu amaç dâhilinde, “Coğrafya Konuların Öğretiminde Kullanılan Materyaller, öğrencilerin akademik başarılarını etkilemekte midir?” sorusuna cevap aranmıştır. Çalışma, meta analiz yöntemiyle gerçekleştirilmiştir. Analize dahil edilen 31 çalışmadan elde edilen toplam örneklem büyüklüğü 2138 dir. Verilerin analizinde STATA 13 ve CMA 3 programları kullanılmıştır. Verileri analiz ederken her bir çalışmanın kontrol ve deney grubunun sontest ölçümlerinden standart sapma, aritmetik ve örneklem büyüklüğü değerleri kullanılmıştır. Çalışma sonucunda, coğrafya konuların öğretiminde kullan

FACTORS INFLUENCING THE LEARNING SUCCESS OF MASTER STUDENTS AT IPB BUSINESS SCHOOL (SB-IPB

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Maya Wulan Arini

2017-05-01

2014/2015 berhasil menyelesaikan studi dalam waktu normal penyusunan tesis. Penelitian ini bertujuan untuk mengidentifikasi faktor-faktor apa saja yang menyebabkan mahasiswa terlambat menyelesaikan tesis yang berdampak pada keberhasilan studi. Data primer dalam penelitian ini bersumber dari wawancara kepada mahasiswa tahun angkatan 2011/2012, sedangkan data sekunder bersumber dari bagian akademik SB-IPB. Penentuan jumlah sampel menggunakan rumus slovin diperoleh 80 mahasiswa sebagai responden. Metode analisis data yang digunakan, yaitu SEM dengan metode PLS. Hasil penelitian menunjukkan bahwa Indikator yang berperan dominan terhadap karakteristik mahasiswa yaitu status pekerjaan, sedangkan indikator yang berperan dominan terhadap proses penyusunan tesis yaitu kesesuaian bidang minat dan proses administrasi. Karakteristik mahasiswa signifikan memengaruhi proses penyusunan tesis sebesar -0.283. Artinya, mahasiswa yang aktif bekerja akan menghambat proses penyusunan tesisnya. Demikian juga proses penyusunan tesis berpengaruh signifikan pada keberhasilan studi sebesar 0.346. Artinya, semakin mudah proses penyusunan tesis maka akan semakin menigkatkan keberhasilan studi. Divisi akademik diharapkan dapat lebih aktif mengontrol mahasiswa yang sedang dalam proses penyusunan tesis terutama pada kelas yang mayoritas aktif bekerja untuk menunjang keberhasilan studi mahasiswa yang lebih baik.Keywords: sekolah bisnis, program magister, keberhasilan studi, PLS, SEM

PERANCANGAN ARSITEKTUR SISTEM INFORMASI MENGGUNAKAN METODE ENTERPRISE ARCHITECTURE PLANNING (Studi Kasus : Universitas Purwakarta - Purwakarta

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Beki Subaeki

2016-03-01

Full Text Available ABSTRAK Pemanfaatan teknologi informasi pada suatu organisasi sangat diperlukan, hal ini diperlukan terlebih oleh organisasi besar semacam perguruan tinggi kerena pengembangan sistem informasi akan semakin komplek dan akan berpengaruh pada perkembangan bisnis yang sedang berjalan. Pada prakteknya tidak sedikit pembangunan / pengembangan sistem informasi mengalami kegagalan, hal ini dikarenakan karena tidak sesuai dengan arah tujuan serta kebutuhan akademik. Salah satu metode yang digunakan untuk membangun/mengenbangkan sistem informasi adalah Enterprise Architecture Planning, dimana metode ini merupakan metode yang digunakan untuk pendekatan perencanaan kualitas data dengan melihat pada kebutuhan bisnis dari organisasi. Didalam Enterprise Architecture Planning akan diuraikan tentang arsitektur data, aplikasi, teknologi serta roadmap rencana implementasi dari arsitektur tersebut.Universitas Purwakarta sebagai salah satu penyelenggara pendidikan, tidak luput dari kebutuhan mendefinisikan kebutuhan bisnis dan arsitektur informasinya agar arah strategi kebijakan pengembangan organisasi dapat terencanakan dengan baik. Pemodelan arsitektur informasi pada Universitas Purwakarta, meliputi pendefinisian arsitektur data, arsitektur aplikasi, arsitektur teknologi, dan pembuatan pemetaan atau roadmap rencana implementasi. Proses dalam pendefinisian arsitektur informasi yang ditinjau, mengacu kepada proses yang sudah umum terjadi dalam bisnis penyelenggaraan sistem pendidikan khususnya di Universitas Purwakarta, sedangkan ruang lingkup pembahasan melingkupi bidang akademik, bidang administrasi keuangan. Hasil dari penelitian ini akan menghasilkan roadmap rencana implementasi yang dapat dijadikan acuan dalam pembangunan aplikasi yang mendukung fungsi bisnis organisasi.. Kata Kunci : Enterprise Architecture Planning, Arsitektur Data, Arsitektur Aplikasi Dan Arsitektur Teknologi, Sistem Informasi. ABSTRACT Utilization of information technology in an

PENGARUH KEPUASAN KERJA DAN STRES KERJA TERHADAP KINERJA GURU DALAM MENINGKATKAN MUTU AKADEMIK LULUSAN PADA SMA RSBI DI KABUPATEN SIDOARJO

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M. Riadhos Solichin

2017-03-01

Full Text Available This research investigates the effect of job satisfaction and job stress on the teachers’ performance in enhancing graduates’ academic achievement in internationally standardized senior highs schools in Sidoarjo. 60 teachers of grade XII teaching the nationally tested subjects were purposefully taken as the sample of the study. Data were gathered by using questionnaire and analysed by employing Partial Least Square Analysis (PLS in the SmartPLS software. The finding indicates that there is a positive relationship between job satisfaction and teachers’ performance. It is predicted that job satisfaction play important role in enhancing the graduates’ academic achievement. Secondly, there is contrast relationship between the job stress and teachers’ performance. In other words, teachers still work hard in enhancing their students’ academic achievement regardless their job stress.

Free-living marine nematodes of Desmodorella and Zalonema (Nematoda: Desmodoridae) with description of two new species from the deep sea of the North Western Pacific.

Science.gov (United States)

Fadeeva, Natalia; Mordukhovich, Vladimir; Zograf, Julia

2016-10-18

Examination of material recently collected by the German-Russian deep-sea expeditions has revealed that new species occur regularly in macro- and meiobenthic samples of the North-Western (NW) Pacific. In this paper, we report three desmodorid species of the genera Desmodorella and Zalonema from the NW Pacific. They were studied and described using both scanning electron microscopy (SEM) and light microscopy. Desmodorella tenuispiculum (Allgen, 1928) was found at several locations in the Sea of Japan during the Russian-German expedition SoJaBio (Sea of Japan Biodiversity Studies) cruise of RV ''Akademik M.V. Lavrentyev'' in 2010, at water depths ranging between 515 and 1500 m. Zalonema granda sp. nov. and Z. kamchatkaensis sp. nov. are characterized by having a larger body size in comparison with other species of the genus. Zalonema kamchatkaensis sp. nov. is characterized by having a convex cephalic capsule, subcephalic setae (3-4 μm long) located in the middle and at the posterior region of the cephalic capsule, very large spiral amphidial fovea with 2.1-2.2 turns, sexual dimorphism in amphideal fovea size (larger in males, 39-45 μm, than in females, 37-43 μm). Zalonema granda sp. nov. is characterized by having a very long body (3.3-4.3 mm), curved elongate spicules (1.4-1.6 body diameter long), with blade broadening anteriorly towards the rounded capitulum, and pointed distally; weakly developed tubular gubernaculum, and absence of pre-cloacal supplements.

Communicating by using PECS for Children with Rubinstein-Taybi Syndrome

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Derwena Mohd Bazain

2017-07-01

Full Text Available This study discusses communication aid using the Picture Exchange Communication System (PECS to children with Rubinstein Taybi Syndrome (RTS. RTS's children suffer mental retardation, have the - the autistic, can not speak and can not manage themselves well. The aim of this study was to determine the effectiveness of using PECS and RTS students can improve their language to communicate better to all. Based on the theory of constructivism introduced by Gagne that emphasizes learning system must start from the simple to the complex. The study design is a case study of a child suffering from Rubinstein-Taybi syndrome. In conclusion, the PECT implemented is expected can help children’s RTS and improve their academic performance. Kajian ini membincangkan mengenai bantuan komunikasi menggunakan Picture Exchange Communication System (PECS kepada kanak-kanak Sindrom Rubinstein Taybi (RTS. Kanak-kanak RTS ini mengalami kerencatan akal, memiliki ciri – ciri autisme, tidak boleh bertutur dan tidak boleh urus diri dengan baik. Tujuan kajian ini adalah untuk melihat keberkesanan menggunakan PECS dan murid RTS dapat meningkatkan penguasaan bahasa untuk berkomunikasi dengan lebih baik kepada semua. Berdasarkan teori konstruktivisme yang diperkenalkan oleh Gagne yang menekankan sistem pembelajaran harus bermula daripada yang mudah kepada yang rumit. Rekabecntuk kajian ini berbentuk kajian kes terhadap seorang kanak-kanak yang mengalami sindrom Rubinstein-Taybi. Kesimpulannya, diharapkan dengan adanya PECS yang dilaksanakan dapat membantu kanak-kanak RTS ini serta meningkatkan prestasi akademik mereka.

Hydrogeochemical and isotopic signatures of gas hydrate-forming fluids offshore NE Sakhalin (the sea of Okhotsk): Results from the CHAOS-2003 cruises

International Nuclear Information System (INIS)

Mazurenko, Leonid; Matveeva, Tatiana; Soloviev, Valery; Prasolov, Eduard; Logvina, Elizaveta; Shoji, Hitoshi; Hachikubo, Akihiro; Minami, Hirotsugi; Sakagami, Hirotoshi

2005-01-01

During the CHAOS-2003 cruises of R/V Akademik Lavrentyev three new gas hydrate accumulations named the Chaos, the Hieroglyph and the Kitami were discovered offshore NE Sakhalin (the Sea of Okhotsk) in association with fluid venting. The main goal of this paper is to clarify the origin and the composition of gas and water involving the accumulation of vent-related gas hydrates and to reveal their mechanism of formation. Discharging of deeper sourced water is not observed based on data of the major ion distribution. Observed isotope anomalies of hydrogen (up to 2.52%) and oxygen (up to 0.36%) are higher than fractionation coefficient under gas hydrate formation (1.8% and 0.3%, respectively). These features could be explained by two processes: a) an influence of residual water during gas hydrates formation or b) involving to the process of gas hydrate formation of deep-sourced water. The latter process is most probably influence on the isotopic composition of the pore water. Studied pore water samples consist from three end members: Gas hydrate water, seawater (or in situ pore water of the basin) and deep-sourced water. Results of isotopic studies of water testify that discharged fluid is characterized by light (delta)D (up to approx. 0.11% ) and (delta) 18 O (up to approx. 0.12%). Two mechanisms of gas hydrate accumulation are distinguished: Precipitation from infiltrating gas-saturated water and segregation of pore water by diffusing gas. (Author)

Menumbuhkan Keterlibatan Positif dalam Bekerja: Melalui Iklim Kompetisi ataukah Pengembangan Kompetensi?

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Rezki Ashriyana Sulistiobudi

2017-10-01

Abstrak: Penerapan motivational climate untuk mendorong iklim berprestasi dan performansi sudah sangat banyak dibahas bahkan berpuluh tahun sebelum ini. Hanya, penelitian yang ada masih terbatas pada konteks akademik, pendidikan dan bidang olahraga. Oleh karena itu, melalui penelitian ini akan dibahas mengenai motivational climate di konteks pekerjaan dengan pendekatan psikologi industri dan organisasi dan perannya terhadap work engagement karyawan. Secara spesifik, penelitian ini mendudukkan motivational climate sebagai resource dalam kerangka JDR-Model (Job Demand Resource Model yang mem­bantu karyawan dalam menghadapi tantangan pekerjaan sehingga lebih merasa engaged dalam bekerja. Penelitian ini dilakukan terhadap 76 orang karyawan di salah satu BUMN di Jawa Barat. Pendekatan penelitian melalui ex-post-facto study dengan uji regresi linier berganda. Berdasarkan hasil tersebut, diperoleh hasil bahwa motivational climate berperan signifikan terhadap work engagement karyawan. Mastery climate sebagai salah satu dimensi dari motivational climate, berperan signifikan terhadap keterikatan positif dalam bekerja. Sebaliknya, performance climate ternyata tidak menunjukkan peran yang berarti. Dengan demikian, dukungan terhadap pengembangan diri dan kemampuan karyawan dapat berperan sebagai job resource yang berkontribusi untuk menumbuhkan perasaan engaged pada pekerjaannya. Jika iklim yang mendorong kompetisi antar karyawan diterapkan begitu saja tanpa dibarengi kesempatan pengembangan diri maka tidak akan berdampak pada engagement karyawan. Oleh sebab itu, secara praktis sebaiknya perusahaan mem­per­timbang­kan bagaimana program-program pengembangan kemampuan kerja dan pengembangan diri karyawan dapat diimplementasikan dengan berkesinambungan dan seimbang daripada hanya sekedar program kompetisi kerja semata.

Analytical description of ballistic spin currents and torques in magnetic tunnel junctions

KAUST Repository

Chshiev, M.

2015-09-21

In this work we demonstrate explicit analytical expressions for both charge and spin currents which constitute the 2×2 spinor in magnetic tunnel junctions with noncollinear magnetizations under applied voltage. The calculations have been performed within the free electron model in the framework of the Keldysh formalism and WKB approximation. We demonstrate that spin/charge currents and spin transfer torques are all explicitly expressed through only three irreducible quantities, without further approximations. The conditions and mechanisms of deviation from the conventional sine angular dependence of both spin currents and torques are shown and discussed. It is shown in the thick barrier approximation that all tunneling transport quantities can be expressed in an extremely simplified form via Slonczewski spin polarizations and our effective spin averaged interfacial transmission probabilities and effective out-of-plane polarizations at both interfaces. It is proven that the latter plays a key role in the emergence of perpendicular spin torque as well as in the angular dependence character of all spin and charge transport considered. It is demonstrated directly also that for any applied voltage, the parallel component of spin current at the FM/I interface is expressed via collinear longitudinal spin current components. Finally, spin transfer torque behavior is analyzed in a view of transverse characteristic length scales for spin transport.

Effects of ultrashort laser pulses on angular distributions of photoionization spectra.

Science.gov (United States)

Ooi, C H Raymond; Ho, W L; Bandrauk, A D

2017-07-27

We study the photoelectron spectra by intense laser pulses with arbitrary time dependence and phase within the Keldysh framework. An efficient semianalytical approach using analytical transition matrix elements for hydrogenic atoms in any initial state enables efficient and accurate computation of the photoionization probability at any observation point without saddle point approximation, providing comprehensive three dimensional photoelectron angular distribution for linear and elliptical polarizations, that reveal the intricate features and provide insights on the photoionization characteristics such as angular dispersions, shift and splitting of photoelectron peaks from the tunneling or above threshold ionization(ATI) regime to non-adiabatic(intermediate) and multiphoton ionization(MPI) regimes. This facilitates the study of the effects of various laser pulse parameters on the photoelectron spectra and their angular distributions. The photoelectron peaks occur at multiples of 2ħω for linear polarization while  odd-ordered peaks are suppressed in the direction perpendicular to the electric field. Short pulses create splitting and angular dispersion where the peaks are strongly correlated to the angles. For MPI and elliptical polarization with shorter pulses the peaks split into doublets and the first peak vanishes. The carrier envelope phase(CEP) significantly affects the ATI spectra while the Stark effect shifts the spectra of intermediate regime to higher energies due to interference.

Transport in quantum dots

International Nuclear Information System (INIS)

Deus, Fernanda; Continetino, Mucio

2011-01-01

Full text. In this work we study the time dependent transport in interacting quantum dot. This is a zero-dimensional nano structure system which has quantized electronic states. In our purpose, we are interested in studying such system in a Coulomb blockade regime where a mean-field treatment of the electronic correlations are appropriate. The quantum dot is described by an Anderson type of Hamiltonian where the hybridization term arises from the contact with the leads. We consider a time dependence of both the energy of the localized state in the quantum dot and of the hybridization-like term. These time dependent parameters, under certain conditions, induce a current in the quantum dot even in the absence of difference on the chemical potential of the leads. The approach to this non-equilibrium problem requires the use of a Keldysh formalism. We calculate the non- equilibrium Green's functions and obtain results for the average (equilibrium term) and the non-equilibrium values of the electronic occupation number in the dot. we consider the possibility of a magnetic solution, with different values for the average up and down spins in the quantum dot. Our results allow to obtain, for instance, the tunneling current through the dot. The magnetic nature of the dot, for a certain range of parameters should give rise also to an induced spin current through the dot

A T-shaped double quantum dot system as a Fano interferometer: Interplay of coherence and correlation upon spin currents

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Fernandes, I. L.; Cabrera, G. G.

2018-05-01

Based on Keldysh non-equilibrium Green function method, we have investigated spin current production in a hybrid T-shaped device, consisting of a central quantum dot connected to the leads and a side dot which only couples to the central dot. The topology of this structure allows for quantum interference of the different paths that go across the device, yielding Fano resonances in the spin dependent transport properties. Correlation effects are taken into account at the central dot and handled within a mean field approximation. Its interplay with the Fano effect is analyzed in the strong coupling regime. Non-vanishing spin currents are only obtained when the leads are ferromagnetic, the current being strongly dependent on the relative orientation of the lead polarizations. We calculate the conductance (spin and charge) by numerically differentiating the current, and a rich structure is obtained as a manifestation of quantum coherence and correlation effects. Increase of the Coulomb interaction produces localization of states at the side dot, largely suppressing Fano resonances. The interaction is also responsible for the negative values of the spin conductance in some regions of the voltage near resonances, effect which is the spin analog of the Esaki tunnel diode. We also analyze control of the currents via gate voltages applied to the dots, possibility which is interesting for practical operations.

Splitting efficiency and interference effects in a Cooper pair splitter based on a triple quantum dot with ferromagnetic contacts

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Bocian, Kacper; Rudziński, Wojciech; Weymann, Ireneusz

2018-05-01

We theoretically study the spin-resolved subgap transport properties of a Cooper pair splitter based on a triple quantum dot attached to superconducting and ferromagnetic leads. Using the Keldysh Green's function formalism, we analyze the dependence of the Andreev conductance, Cooper pair splitting efficiency, and tunnel magnetoresistance on the gate and bias voltages applied to the system. We show that the system's transport properties are strongly affected by spin dependence of tunneling processes and quantum interference between different local and nonlocal Andreev reflections. We also study the effects of finite hopping between the side quantum dots on the Andreev current. This allows for identifying the optimal conditions for enhancing the Cooper pair splitting efficiency of the device. We find that the splitting efficiency exhibits a nonmonotonic dependence on the degree of spin polarization of the leads and the magnitude and type of hopping between the dots. An almost perfect splitting efficiency is predicted in the nonlinear response regime when the energies of the side quantum dots are tuned to the energies of the corresponding Andreev bound states. In addition, we analyzed features of the tunnel magnetoresistance (TMR) for a wide range of the gate and bias voltages, as well as for different model parameters, finding the corresponding sign changes of the TMR in certain transport regimes. The mechanisms leading to these effects are thoroughly discussed.

The excitonic insulator route through a dynamical phase transition induced by an optical pulse

Energy Technology Data Exchange (ETDEWEB)

Brazovskii, S., E-mail: brazov@lptms.u-psud.fr [Université Paris-Saclay, LPTMS, CNRS, Univ. Paris-sud (France); Kirova, N. [Université Paris-Saclay, LPS, CNRS, Univ. Paris-sud (France)

2016-03-15

We consider a dynamical phase transition induced by a short optical pulse in a system prone to thermodynamical instability. We address the case of pumping to excitons whose density contributes directly to the order parameter. To describe both thermodynamic and dynamic effects on equal footing, we adopt a view of the excitonic insulator for the phase transition and suggest a formation of the Bose condensate for the pumped excitons. The work is motivated by experiments in donor–acceptor organic compounds with a neutral- ionic phase transition coupled to the spontaneous lattice dimerization and to charge transfer excitons. The double nature of the ensemble of excitons leads to an intricate time evolution, in particular, to macroscopic quantum oscillations from the interference between the Bose condensate of excitons and the ground state of the excitonic insulator. The coupling of excitons and the order parameter also leads to self-trapping of their wave function, akin to self-focusing in optics. The locally enhanced density of excitons can surpass a critical value to trigger the phase transformation, even if the mean density is below the required threshold. The system is stratified in domains that evolve through dynamical phase transitions and sequences of merging. The new circumstances in experiments and theory bring to life, once again, some remarkable inventions made by L.V. Keldysh.

Quasistationary states in single and double GaAs–(Ga,Al)As quantum wells: Applied electric field and hydrostatic pressure effects

International Nuclear Information System (INIS)

Schönhöbel, A.M.; Girón-Sedas, J.A.; Porras-Montenegro, N.

2014-01-01

We have calculated exactly the energy of electron quasistationary states in GaAs–(Ga,Al)As single and double quantum wells under the action of applied electric field and hydrostatic pressure by using Enderlein's method to solve the Schrödinger equation. Numerical results were obtained by means of the density of states as a function of the applied electric field, hydrostatic pressure, Al concentration and the structure geometry as well. We found two regions very well differentiated in energy; for lower values there are quasistationary states and for higher, fast oscillations. The quasistationary ground and excited energy states diminish with the well width and the applied electric field, and increase with the confinement potential and the width of the central barrier in the double quantum well. In the latter structure we observed the anti-crossing between the first and second quasistationary energy levels, phenomena which certainly depend on the central barrier width. Otherwise, in the region of fast oscillations, the period of Franz–Keldysh oscillation type in single quantum well and double quantum well increases with the applied electric field and the number of nodes augments with the well width. Also, we found that the increase of the central barrier height in the double quantum well diminishes the number of nodes, while the applied hydrostatic pressure changes the length of pulsations in both structures.

Transient fluctuation relations for time-dependent particle transport

Science.gov (United States)

Altland, Alexander; de Martino, Alessandro; Egger, Reinhold; Narozhny, Boris

2010-09-01

We consider particle transport under the influence of time-varying driving forces, where fluctuation relations connect the statistics of pairs of time-reversed evolutions of physical observables. In many “mesoscopic” transport processes, the effective many-particle dynamics is dominantly classical while the microscopic rates governing particle motion are of quantum-mechanical origin. We here employ the stochastic path-integral approach as an optimal tool to probe the fluctuation statistics in such applications. Describing the classical limit of the Keldysh quantum nonequilibrium field theory, the stochastic path integral encapsulates the quantum origin of microscopic particle exchange rates. Dynamically, it is equivalent to a transport master equation which is a formalism general enough to describe many applications of practical interest. We apply the stochastic path integral to derive general functional fluctuation relations for current flow induced by time-varying forces. We show that the successive measurement processes implied by this setup do not put the derivation of quantum fluctuation relations in jeopardy. While in many cases the fluctuation relation for a full time-dependent current profile may contain excessive information, we formulate a number of reduced relations, and demonstrate their application to mesoscopic transport. Examples include the distribution of transmitted charge, where we show that the derivation of a fluctuation relation requires the combined monitoring of the statistics of charge and work.

Simulation of the soft-landing and adsorption of C{sub 60} molecules on a graphite substrate and computation of their scanning-tunnelling-microscopy-like images

Energy Technology Data Exchange (ETDEWEB)

Rafii-Tabar, H. [Computational Nano-Science Research Group, Centre for Numerical Modelling and Process Analysis, School of Computing and Mathematical Sciences, University of Greenwich, Greenwich, London (United Kingdom); Jurczyszyn, L.; Stankiewicz, B. [Institute of Experimental Physics, University of Wroclaw, Wroclaw (Poland)

2000-07-03

A constant-temperature molecular dynamics (MD) simulation was performed to model the soft-landing and adsorption of C{sub 60} molecules on a graphite substrate with the C{sub 60}s treated as soft molecules and released individually towards the substrate. The intra-molecular and intra-planar covalently bonding interactions were modelled by very accurate many-body potentials, and the non-bonding forces were derived from various pairwise potentials. The simulation extended over 1.6 million time steps covering a significant period of 160 picoseconds. The final alignment of the molecules on the surface agrees closely with that observed in an experiment based on scanning tunnelling microscopy (STM) on the same system, performed at room temperature and under ultrahigh-vacuum (UHV) conditions. Using a tungsten tip in a constant-current mode of imaging, we have also computed the STM-like images of one of the adsorbed molecules using a formulation of the STM tunnelling current based on Keldysh's non-equilibrium Green function formalism. Our aim has been to search for tip-induced states, which were speculated, on the basis of another STM-based experiment, performed in air, to form one of the possible origins of the extra features purported to have been observed in that experiment. We have not obtained any such states. (author)

Hubungan Self Assessment-Peer Assessment dengan Nilai Kelulusan OSCE Mahasiswa Fakultas Kedokteran Unisba

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Santun Bhekti Rahimah

2017-02-01

Full Text Available Abstrak Objective structured clinical examination (OSCE adalah cara penilaian kompetensi klinik mahasiswa secara komprehensif dan konsisten serta dapat dijadikan media untuk meningkatkan hasil belajar. Feedback dapat dilakukan oleh mahasiswa itu sendiri (self assessment maupun mahasiswa lain yang satu level (peer assessment. Self dan peer assessment diharapkan akan meningkatkan kemampuan mahasiswa dalam melihat tujuan pembelajaran, meningkatkan rasa percaya diri, kemampuan berpikir kritis, dan bertindak tepat dalam menghadapi ujian. Tujuan penelitian ini melihat hubungan self assessment dan peer assessment dengan nilai kelulusan OSCE mahasiswa tingkat dua dan empat FK Unisba tahun akademik 2012/2013. Nilai hasil ujian OSCE yang dipergunakan adalah pada periode Desember 2012–Juni 2013. Self dan peer assessment dilaksanakan setelah ujian OSCE. Self assessment dilakukan oleh mahasiswa itu sendiri, sedangkan peer assessment didapatkan dari lima orang mahasiswa lain yang pernah berada dalam satu kelompok dengan subjek. Hasil penelitian menunjukkan untuk mahasiswa tingkat dua terdapat korelasi bermakna self assessment dan peer assessment dengan nilai OSCE (p<0,001, arah hubungan antara keduanya positif, serta kekuatan hubungan keduanya sedang (R=0,426. Pada mahasiswa tingkat empat terdapat korelasi bermakna antara self assessment dan nilai OSCE (p<0,001 dengan kekuatan hubungan keduanya sedang (R=0,451, serta terdapat korelasi yang bermakna antara penilaian peer assessment dan nilai OSCE. Simpulan, self assessment mempunyai korelasi positif terhadap nilai kelulusan OSCE pada mahasiswa tingkat dua dan tingkat empat, sedangkan peer assessment mempunyai korelasi positif dengan nilai kelulusan OSCE hanya pada mahasiswa tingkat dua. Self assessment mempunyai korelasi positif dengan peer assessment pada mahasiswa tingkat dua dan tingkat empat FK Unisba tahun akademik 2012/2013. Abstract Objective structured clinical examination (OSCE is a tools to assess

Chemical composition of aerosol in the atmospheric surface layer of the East Antarctica coastal zone

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L. P. Golobokova

2016-01-01

Full Text Available Chemical composition of aerosol in the ground layer of the coastal zone in East Antarctica is analyzed in the article. The aerosol samples were taken in 2006–2015 during seasonal works of the Russian Antarctic Expeditions (RAE, namely, these were 52nd–53rd, 55th, and 58th–60th expeditions. Samples were taken in the 200‑km band of the sea-shore zone along routes of the research vessels (REV «Akademik Fedorov» and «Akademik Treshnikov» as well as on territories of the Russian stations Molodezhnaya and Mirny. Although the results obtained did show the wide range of the aerosol concentrations and a certain variability of their chemical composition, some common features of the variability were revealed. Thus, during the period from 2006 to 2014 a decrease of average values of the sums were noted. Spatially, a tendency of decreasing of the ion concentrations was found in the direction from the station Novolazarevskaya to the Molodezhnaya one, but the concentrations increased from the Molodezhnaya to the station Mirny. The sum of ions of the aerosol in the above mentioned coastal zone was, on the average, equal to 2.44 μg/m3, and it was larger than that on the territory of the Antarctic stations Molodezhnaya (0,29 μg/m3 and Mirny (0,50 ág / m3. The main part to the sum of the aerosol ions on the Antarctic stations was contributed by Na+, Ca2+, Cl−, SO4 2−. The main ions in aerosol composition in the coastal zone are ions Na+ and Cl−. The dominant contribution of the sea salt and SO4 2− can be traced in not only the composition of atmospheric aerosols, but also in the chemical composition of the fresh snow in the coastal areas of East Antarctica: at the Indian station Maitri, on the Larsemann Hills, and in a boring located in 55.3 km from the station Progress (K = 1.4÷6.1. It was noted that values of the coefficient of enrichment K of these ions decreases as someone moves from a shore to inland. Estimation of

TINGKAT KEPUASAN MAHASISWA TERHADAP LAYANAN AKADEMIK DOSEN PENDIDIKAN AGAMA ISLAM (PENELITIAN PADA MAHASISWA SEMESTER II FAKULTAS ILMU PENDIDIKAN UNIVERSITAS NEGERI SEMARANG

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Ilyas Ilyas

2014-02-01

Full Text Available One of the subjects who had a goal guarding behavior in the learning process of students on campus is MKU (General Courses. And one of the common subjects are Islamic Education (PAI. With subjects such PAI sincerely hope college students to be able to color the character better. Hope is certainly not to blame, but please note that in the process of PAI college is not easy to carry out the mandate in order to make students become better morals. Because the process involves a lot of things, as in educational theory that there are several factors that affect learning, including students, teachers, objectives, content, and the environment. The results of this study indicate that some of the services that it is considered satisfactory academic student in university classes FIP UNNES PAI is mastery of the material by lecturers and professors appearance and acceptance of lecturers to students. Services that still needs improvement is the presence of a lecturer at the college, faculty understanding of the condition of the course students conformity with the plan of activities, evaluation and feedback, availability syllabus and plan learning activities and the provision of reference books.

Hüzün Turizmi Üzerine Bir Derleme

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Ahmet ÇELİK

2017-09-01

Full Text Available Gün geçtikçe değişen özel ilgi turları, kitle turizminin bölgelere vermiş olduğu fiziksel ve kültürel etkilerini azaltarak, yeni çekim merkezleri ve daha sürdürülebilir bir turizmi amaç edinmektedir. Hüzün turizmi, kişilerde geçmişe yönelik acı, keder, üzüntü, hüzün, empati, sempati, korku, nefret ve intikam gibi içsel duyguların yönlendirilmesi ile alternatif bir turizm hareketi olarak gerçekleştirilmektedir. Son on yılda başlayan hüzün turizminin akademik çalışmaları genel olarak destinasyon pazarlamasını ele almaktadır. Ölümün sadece turizm açısından değil, kültür ve sosyal olarak incelenmesi gerekmektedir. Bu çalışmada, ulusal yayınlarda yer alan çalışmaların derlemesi yapılıp, isimlendirme konusunda yaşanan problemlere çözüm aranmaktadır. Ayrıca çalışmanın yürütüldüğü zamana kadar belirlenen ve potansiyeli olan bölgeler incelenip bir araya getirilerek, literatüre tek çalışmada kazandırılması hedeflenmektedir

The influence of activities and nutrition status to university students' achievements

Science.gov (United States)

Fathonah, Siti

2018-03-01

The purpose of this research is to analyse the influence of activity and nutrition status to the achievement of students from Engineering Faculty of UNNES. The subject of this research is the students of Engineering Faculty of UNNES. Using proportional random sampling, there are 5% (214 students of 2015 batch) taken as the samples of the research. The methods of collecting the data were using documentation from akademik.unnes.ac.id on students' achievement, questionnaire to ask upon students' activity, and BMI measurement for nutrition status. The data analysis was using percentage description, chi-square analysis, and regression. The data obtained that the average grade points of engineering students are satisfying in the level of 3.29 with light activities with the energy of 2.220 kkal. The average sleeping time of the students were 5.68 hours, whereas the total of their studying and private activity were 18.18 hours. The status of students' nutrition is Normal weight with the details of 64.2% of students are Normal weight, 23.5% of them are wasting, 4.0% are overweight, and 5.2% are obesity. The activity and nutrition status were proven not significantly influencing students grade point of achievements. The suggestions proposed by the researcher are 1) the students need to increase their sleeping time to be 6-9 hours, and they need to habituate themselves in working out at least 3 times a week in 30 - 45 minutes, and 2) further research on nutrition status and students' achievements can focus on the influence of food consumption and students' clean lifestyle.

Yvonne Haffner, Beate Krais: Arbeit als Lebensform? Frankfurt am Main u.a.: Campus Verlag 2008

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Daniela Heitzmann

2009-07-01

Full Text Available Nachdem der Mythos des unerbittlich arbeitenden Wissenschaftlers, der sich mit Haut und Haar ‚seiner‘ Forschung verschrieben hat, langsam zu bröckeln beginnt, stellt sich aus der Genderperspektive die Frage nach der Bedeutung der Arbeitskultur für die fortbestehende Unterrepräsentanz von Frauen in der Wissenschaft, besonders in leitenden Positionen. Gleichzeitig trägt die allmähliche ‚Entdeckung‘ des Privaten für Männer, die nun auch Väter und Lebenspartner sein sollen (können, zur Entmythologisierung bei. Der vorliegende Sammelband widmet sich dem Balance-Akt zwischen Arbeits- und Privatleben, den Frauen und Männer zu leisten haben. Auf Grundlage zahlreicher empirischer Untersuchungen wird ein umfassendes und erkenntnisreiches Panorama über die Verquickungen individueller und struktureller Anforderungen an berufstätige Akademikerinnen und Akademiker vorgelegt.The mythology of the relentlessly working scholar who has dedicated “his” entire life to research has started to crumble. From a gender perspective, this naturally brings up the question as to the meaning of work culture for the continuing underrepresentation of women in scholarship, and in particular in leading positions. At the same time, the gradual “discovery” of the private sphere for men, who now should (can also be fathers and partners, adds to this demythologization. The collected volume at hand looks at the balancing act women and men must achieve between work and private life. On the basis of numerous empirical examinations, the book provides a comprehensive panorama rich in insights into the combinations of individual and structural demands placed on working academics.

15. YÜZYIL ŞAİRLERİNDEN DİYARBAKIRLI HALÎLÎ’NİN ŞİİRLERİ / THE POEMS OF HALÎLÎ WHO IS A 15th CENTURY POET FROM DIYARBAKIR

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Ahmet KAVAKLIYAZI

2015-12-01

Full Text Available Klasik Türk edebiyatında divanı bugün için elimizde bulunmayan kimi şairlerin şiirleri, şiir mecmualarında karşımıza çıkmaktadır. Bu şairlerden biri de Firkat-nâme’si ile tanınan, 15. yüzyıl şairi Diyarbakırlı Halîlî’dir.Halîlî’nin belli başlı mecmualardaki şiirleri daha önce bazı akademik çalışmalara konu edilmişti. Üzerine yüksek lisans tezi hazırladığımız Koyunoğlu Müzesi Kütüphanesinde bulunan 13450 numaralı mecmuada Halîlî’nin, önceki yayımlarda bulunmayan şiirlerinin olduğunu gördük. Ayrıca, mecmualarda Halîlî’ye ait bazı şiirlerin onun Firkat-nâme’sinde geçen şiirler olması sebebiyle bu eserdeki şiirlerin ayrılması ve mecmuaların yeniden taranarak diğer şiirlerinin belirlenmesi gerekmekteydi.Çalışmamızda Halîlî’nin Firkat-nâme dışındaki şiirleri mecmualar taranarak tespit edilmiş, bu şiirlerin ona aidiyeti saptanmış ve şiirlerin karşılaştırmalı metni verilmiştir.

THE EFFECT OF E-COMMERCE ON MALAYSIAN TAX SYSTEM: AN EMPIRICAL EVIDENCE FROM ACADEMICIANS AND MALAYSIAN TAX PRACTITIONERS

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Mohd Rizal Palil

2004-01-01

Full Text Available The explosion of information technology (IT nowadays has created new phenomena in shopping activities. Consumers can easily buy products via Internet. Within a minute, the products will be delivered instantly and accurately. This scenario is known as e-commerce. The emergence of e-commerce affects consumers' shopping behavior as well as taxation system. The objective of this research is to reveal the effects of e-commerce upon Malaysian taxation system by emphasizing in scope of charge 'derive and remittance'. Research was conducted through questionnaires of 82 tax practitioners and 22 academicians. The research findings shown that derive and remittance basis is no longer appropriate in e-commerce environment. Scope of charge derives and remittances, which are practicing in Malaysia right now, are unable to maximized e-commerce tax revenue. Abstract in Bahasa Indonesia : Perkembangan dalam dunia teknologi akhir-akhir ini telah membawa banyak arus perubahan terutamanya dalam aktivitas belanja. Konsumen dapat membeli barang dengan mudah melalui internet. Dalam waktu beberapa menit, barang sampai di tangan konsumen. Skenario demikian dikenal sebagai perdagangan elektronis. Kemunculan perdagangan elektronis mengubah prilaku belanja konsumen serta sistem perpajakan di Malaysia. Tujuan penelitian ini adalah untuk mengetahui efek perdagangan elektronis terhadap sistem perpajakan di Malaysia dengan penekanan pada pengenaan pajak dan hak pemajakan. Penelitian dilakukan dengan menggunakan 82 sample praktisi perpajakan dan 22 akademisi. Hasil penelitian menunjukkan, bahwa praktek pengenaan pajak dalam perdagangan elektronis belum sesuai dengan aturan yang berlaku, sehingga tidak dapat memaksimalkan penerimaan pajak dari perdagangan elektronis. Kata kunci: sistem perpajakan Malaysia, perdagangan elektronik, akademik, praktisi perpajakan, pengenaan pajak.

Kontrol Sistemleri dersi için Matlab Builder Ne ve Asp.net tabanlı web laboratuarı tasarımı

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Eyüp Sönmez

2016-08-01

Full Text Available Mühendislik alanında sistemleri test etmek için kullanılan yazılımların öğrenilmesi ve uygulanması zaman kaybına ve asıl amaçtan uzaklaşılmasına neden olmaktadır. Bu çalışmada lisans düzeyinde okutulan Kontrol Sistemleri dersi için internet tabanlı bir arayüz tasarlanmıştır. Hazırlanan kullanıcı arayüzü ile kullanıcıların derin matematik ve programlama bilgisine ihtiyaç duymadan, sistemlerin analiz ve kontrolünü yapabilmesi; ayrıca arayüzün web tabanlı tasarlanmasıyla, yöntemin yaygınlaştırılması, zaman kaybını ortadan kaldırarak birden fazla kullanıcının eş zamanlı kullanabilmesi amaçlanmıştır. Web tabanlı arayüz tasarımı için MATLAB Web Figure ile ASP.NET platformu kullanılmıştır. Aynı zamanda arayüzde yapılan işlemlere ait pratik bilgilere de ulaşılabilmektedir. Böylece hem eğitimsel hem de akademik amaçlara uygun bir sanal laboratuar tasarımı gerçekleştirilmiştir.

Implementasi Sistem Jaminan Mutu (Quality Assurance Proses Pembelajaran di Perguruan Tinggi

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Ari Basuki

2004-06-01

Full Text Available Penelitian ini bertujuan untuk memonitor implementasi sistem jaminan mutu (Quality Assurance proses pembelajaran jenjang SI di Jurusan Manajemen Fakultas Ekonomi Unhrersitas Gadjah Mada. Fokus penelitian melipuri proses pelaksanaan, problema yang dihadapi, serta dampak atau perubahan yang dihasilkannya. Model penelitian yang digunakan ialah monitoring kebijakan yang diadopsi dan teori William N. Dunn. Teknik pengumpulan data dilakukan dengan wawancara, dokumentasi, dan kuesioner. Responden yang dipilih dalam penelitian ini ialah Wakil Dekan Bidang Akademik Fakultas Ekonomi UGM, Ketua Jurusan Manajemen, Direktur Eksekutif QUE-Project Jurusan Manajemen, Dosen Jurusan Manajemen, para Kepala Sub Bagian, serta 200 mahasiswa Jurusan Manajemen yang dipilih secara acak. Teknik analisis data dilakukan dengan sajian tabel, sajian grafik, dalam hubungannya dengan fungsi monitor­ing yaittu compliance (kepatuhan, eksplanasi, auditing (pemeriksaan, dan akuntansL Temuan pokok dalam penelitian ini ialah pelaksanaan sistem jaminan mutu proses pembelajaran di Jurusan Manajemen Fakultas Ekonomi UGM secara eksplisit dimulai sejak Jurusan ini menerima dukungan dana QUE-Project pada tahun 1998. Pelaksanaan program berjalan dan berhasil baik karena komitmen para pelaku, manajemen bagus dengan indikator yang bisa diukur, dan dukungan dana yang memadai. Dampak positif yang terjadi antara lain: (1 terciptanya kultur organisasi yang makin kondusif, (2 peningkatan mutu kinerja dosen, (3 mutu proses pembelajaran yang cukup baik, dan (4 tingkat kepuasan mahasiswa yang cukup tinggL Adapun problema yang dihadapi antara lain: (1 keterbatasan SDM karena cukup banyaknya dosen yang sedang menempuh studi lanjut, dan (2 tidak mudahnya mengintegrasikan antara penilaian kinerja dengan reward and punishment system. Kata kunci: sistem jaminan mutu, pembelajarun diperguruan tinggL

Cosmological singularities and bounce in Cartan-Einstein theory

Science.gov (United States)

Lucat, Stefano; Prokopec, Tomislav

2017-10-01

We consider a generalized Einstein-Cartan theory, in which we add the unique covariant dimension four operators to general relativity that couples fermionic spin current to the torsion tensor (with an arbitrary strength). Since torsion is local and non-dynamical, when integrated out it yields an effective four-fermion interaction of the gravitational strength. We show how to renormalize the theory, in the one-loop perturbative expansion in generally curved space-times, obtaining the first order correction to the 2PI effective action in Schwinger-Keldysh (in-in) formalism. We then apply the renormalized theory to study the dynamics of a collapsing universe that begins in a thermal state and find that—instead of a big crunch singularity—the Universe with torsion undergoes a bounce. We solve the dynamical equations (a) classically (without particle production); (b) including the production of fermions in a fixed background in the Hartree-Fock approximation and (c) including the quantum backreaction of fermions onto the background space-time. In the first and last cases the Universe undergoes a bounce. The production of fermions due to the coupling to a contracting homogeneous background speeds up the bounce, implying that the quantum contributions from fermions is negative, presumably because fermion production contributes negatively to the energy-momentum tensor. When compared with former works on the subject, our treatment is fully microscopic (namely, we treat fermions by solving the corresponding Dirac equations) and quantum (in the sense that we include fermionic loop contributions).

Relaxation dynamics of a driven two-level system coupled to a Bose-Einstein condensate: application to quantum dot-dipolar exciton gas hybrid systems.

Science.gov (United States)

Kovalev, Vadim M; Tse, Wang-Kong

2017-11-22

We develop a microscopic theory for the relaxation dynamics of an optically pumped two-level system (TLS) coupled to a bath of weakly interacting Bose gas. Using Keldysh formalism and diagrammatic perturbation theory, expressions for the relaxation times of the TLS Rabi oscillations are derived when the boson bath is in the normal state and the Bose-Einstein condensate (BEC) state. We apply our general theory to consider an irradiated quantum dot coupled with a boson bath consisting of a two-dimensional dipolar exciton gas. When the bath is in the BEC regime, relaxation of the Rabi oscillations is due to both condensate and non-condensate fractions of the bath bosons for weak TLS-light coupling and pre dominantly due to the non-condensate fraction for strong TLS-light coupling. Our theory also shows that a phase transition of the bath from the normal to the BEC state strongly influences the relaxation rate of the TLS Rabi oscillations. The TLS relaxation rate is approximately independent of the pump field frequency and monotonically dependent on the field strength when the bath is in the low-temperature regime of the normal phase. Phase transition of the dipolar exciton gas leads to a non-monotonic dependence of the TLS relaxation rate on both the pump field frequency and field strength, providing a characteristic signature for the detection of BEC phase transition of the coupled dipolar exciton gas.

Signatures of a quantum dynamical phase transition in a three-spin system in presence of a spin environment

International Nuclear Information System (INIS)

Alvarez, Gonzalo A.; Levstein, Patricia R.; Pastawski, Horacio M.

2007-01-01

We have observed an environmentally induced quantum dynamical phase transition in the dynamics of a two-spin experimental swapping gate [G.A. Alvarez, E.P. Danieli, P.R. Levstein, H.M. Pastawski, J. Chem. Phys. 124 (2006) 194507]. There, the exchange of the coupled states vertical bar ↑,↓> and vertical bar ↓,↑> gives an oscillation with a Rabi frequency b/ℎ (the spin-spin coupling). The interaction, ℎ/τ SE with a spin-bath degrades the oscillation with a characteristic decoherence time. We showed that the swapping regime is restricted only to bτ SE > or approx. ℎ. However, beyond a critical interaction with the environment the swapping freezes and the system enters to a Quantum Zeno dynamical phase where relaxation decreases as coupling with the environment increases. Here, we solve the quantum dynamics of a two-spin system coupled to a spin-bath within a Liouville-von Neumann quantum master equation and we compare the results with our previous work within the Keldysh formalism. Then, we extend the model to a three interacting spin system where only one is coupled to the environment. Beyond a critical interaction the two spins not coupled to the environment oscillate with the bare Rabi frequency and relax more slowly. This effect is more pronounced when the anisotropy of the system-environment (SE) interaction goes from a purely XY to an Ising interaction form

Cosmological singularities and bounce in Cartan-Einstein theory

Energy Technology Data Exchange (ETDEWEB)

Lucat, Stefano; Prokopec, Tomislav, E-mail: s.lucat@students.uu.nl, E-mail: t.prokopec@uu.nl [Institute for Theoretical Physics, Spinoza Institute and EMME$\\Phi$, Utrecht University, Postbus 80.195, 3508 TD Utrecht (Netherlands)

2017-10-01

We consider a generalized Einstein-Cartan theory, in which we add the unique covariant dimension four operators to general relativity that couples fermionic spin current to the torsion tensor (with an arbitrary strength). Since torsion is local and non-dynamical, when integrated out it yields an effective four-fermion interaction of the gravitational strength. We show how to renormalize the theory, in the one-loop perturbative expansion in generally curved space-times, obtaining the first order correction to the 2PI effective action in Schwinger-Keldysh ( in-in ) formalism. We then apply the renormalized theory to study the dynamics of a collapsing universe that begins in a thermal state and find that—instead of a big crunch singularity—the Universe with torsion undergoes a bounce . We solve the dynamical equations (a) classically (without particle production); (b) including the production of fermions in a fixed background in the Hartree-Fock approximation and (c) including the quantum backreaction of fermions onto the background space-time. In the first and last cases the Universe undergoes a bounce. The production of fermions due to the coupling to a contracting homogeneous background speeds up the bounce, implying that the quantum contributions from fermions is negative, presumably because fermion production contributes negatively to the energy-momentum tensor. When compared with former works on the subject, our treatment is fully microscopic (namely, we treat fermions by solving the corresponding Dirac equations) and quantum (in the sense that we include fermionic loop contributions).

Current-induced damping of nanosized quantum moments in the presence of spin-orbit interaction

Science.gov (United States)

Mahfouzi, Farzad; Kioussis, Nicholas

2017-05-01

Motivated by the need to understand current-induced magnetization dynamics at the nanoscale, we have developed a formalism, within the framework of Keldysh Green function approach, to study the current-induced dynamics of a ferromagnetic (FM) nanoisland overlayer on a spin-orbit-coupling (SOC) Rashba plane. In contrast to the commonly employed classical micromagnetic LLG simulations the magnetic moments of the FM are treated quantum mechanically. We obtain the density matrix of the whole system consisting of conduction electrons entangled with the local magnetic moments and calculate the effective damping rate of the FM. We investigate two opposite limiting regimes of FM dynamics: (1) The precessional regime where the magnetic anisotropy energy (MAE) and precessional frequency are smaller than the exchange interactions and (2) the local spin-flip regime where the MAE and precessional frequency are comparable to the exchange interactions. In the former case, we show that due to the finite size of the FM domain, the "Gilbert damping" does not diverge in the ballistic electron transport regime, in sharp contrast to Kambersky's breathing Fermi surface theory for damping in metallic FMs. In the latter case, we show that above a critical bias the excited conduction electrons can switch the local spin moments resulting in demagnetization and reversal of the magnetization. Furthermore, our calculations show that the bias-induced antidamping efficiency in the local spin-flip regime is much higher than that in the rotational excitation regime.

PENGARUH MODAL BUDAYA, TINGKAT PENDIDIKAN ORANG TUA DAN TINGKAT PENDAPATAN ORANG TUA TERHADAP PRESTASI AKADEMIK PADA MAHASISWA FAKULTAS EKONOMI UNIVERSITAS NEGERI JAKARTA

Directory of Open Access Journals (Sweden)

Henry Eryanto

2013-03-01

Full Text Available This research was aimed at describing the effect of cultural capital, education level of parents and income level of parents to academic achievement. In this research, the analysis use qualitative and quantitative. Qualitative analysis described in descriptive about cultural capital, education level of parents and income level of parents to academic achievement. The quantitative analysis used Logistic Regression. The Regression of research results show that: (1 cultural capital has a positive influence to academic achievement and the effect statistically significant. (2 education level of parents has a positive influence to academic achievement and the effect statistically significant. (3 income level of parents has a positive influence to academic achievement and the effect statistically significant.

Açık kaynak kodlu kütüphane otomosyon sistemlerinin akademik kütüphanelerde kullanımı

OpenAIRE

SALİHOĞLU, Remzi

2012-01-01

       Kütüphanelerin yönetimi için bütünleşik kütüphane otomasyon sistemleri geliştirilmiştir. Bu sistemler kütüphane işlemlerinin birlikte yürütülmesini sağlayan elektronik yazılımlardan oluşmaktadır. Bir kütüphanede yürütülen hizmetlerin büyük oranda kütüphane otomasyon sistemi üzerinden gerçekleştirilmesi mümkündür.
Türkiye’de yerli kütüphane otomasyon sistemleri üretilmektedir. Bunların çoğu ticari olarak geliştirile...

Kontribusi Konsep Diri Akademik dan Motivasi terhadap Prestasi Belajar Bahasa Inggris serta Implikasinya dalam Penyusunan Program Pelayanan Bimbingan dan Konseling di Bidang Belajar

Directory of Open Access Journals (Sweden)

Sesilianus Fau

2016-12-01

Full Text Available The background of this research wasthe variation ofstudents’ achievement in learningEnglishatschool. Academic self-concept and motivation were assumed to have the most dominant effect on students’ achievement in school. The purposes of this study were: (1 to describe the academic self-concept, (2 motivation, (3 the achievement of English learning, (4 to test the contribution of academic self-concept to English learning achievement, (5 to test contribution of motivation to English learning achievement, (6 to test the contribution of academic self-concept and motivation to English learning achievement, and (7 to describe the preparation of Guidance and Counseling program to improve academic self-concept, motivation, and students’ achievement in the school. This research was done through quantitative approach with descriptive correlational method and qualitative approach. The population in this study was the students of XII IPA 1 to 4 of SMA 8 Padang. The sample was chosen by using simple random sampling. Meanwhile, informants in qualitative approach were the teachers of Guidance and Counseling. The Instrument used in the quantitative approach was questionnaire. On the other hand, the key instrument in the qualitative approach was the researcher. Quantitative data were analyzed by using descriptive statistics, simple linear regression and multiple regression. While, qualitative data were analyzed by using Miles and Huberman’s model. The findings of this research showed that: (1 the average description of the academic self-concept of students was in medium category, (2 students' motivation to learn was at high category, (3 the students’ English learning achievement was at goodcategory, (4 there is a contribution of academic self-concept to the students’ English learning achievement amounted to 20.3% (R = 0.451, sig. 0.000, (5 there is a contribution of motivation to English learning achievement of students amounted to 32.9% (R = 0.573, sig. 0.000, (6 there are contributions of both academic self-concept and motivation to the students’ English learning achievement amounted to 60.1% (R = 0.775, sig. 0.000, and (7 most of the Guidance and Counseling program for XII class of SMAN 8 Padang A.Y. 2015/2016 have been arranged well and the materials related to the improvement of academic self-concept, motivation, and students’ achievement have been contained and written in the Guidance and Counseling program that has been arranged.

Electroreflectance investigations of quantum confined Stark effect in GaN quantum wells

International Nuclear Information System (INIS)

Drabinska, A; Pakula, K; Baranowski, J M; Wysmolek, A

2010-01-01

In this paper we present room temperature electroreflectance studies of GaN quantum wells (QWs) with different well width. The electroreflectance measurements were performed with external voltage applied to the structure therefore it was possible to tune the electric field inside QW up to its completely screening and furthermore even reversing it. The analysis of QW spectral lines showed the Stark shift dependence on applied voltage and well width reaching about 35 meV for highest voltage and widest well width. It was possible to obtain the condition of zero electric field in QW. Both broadening and amplitude of QW lines are minimal for zero electric field and increases for increasing electric field in QW. The energy transition is maximum for zero electric field and for increasing electric field it decreases due to Stark effect. Neither amplitude and broadening parameter nor energy transition does not depend on the direction of electric field. Only parameter that depends on the direction of electric field in QW is phase of the signal. The analysis of Franz-Keldysh oscillations (FKOs) from AlGaN barriers allowed to calculate the real electric field dependence on applied voltage and therefore to obtain the Stark shift dependence on electric field. The Stark shift reached from -12 meV to -35 meV for 450 kV/cm depending on the well width. This conditions were established for highest forward voltages therefore this is the value of electric field and Stark shift caused only by the intrinsic polarization of nitrides.

Real-time evolution of quenched quantum systems

Energy Technology Data Exchange (ETDEWEB)

Moeckel, Michael

2009-06-24

Detailed geometries in heterostructures allow for nonequilibrium transport measurements in correlated systems, pump-probe experiments for time-resolved study of many-body relaxation in molecules and solids and ultracold atom gases loaded onto optical lattices for high control of system parameters in real time. In all of these fields of research the nonequilibrium properties of a Fermi liquid can be relevant. A first approach to their understanding is the main content of this thesis. At the beginning I collect a variety of nonequilibrium phenomena and introduce to basic questions and concepts for their study. The key observation of this thesis, namely a characteristic mismatch of expectation values in equilibrium and nonequilibrium, is first illustrated for the squeezed oscillator. Afterwards, these observations are generalized to a larger class of one-particle models. Then the nonequilibrium behavior of a Fermi liquid is examined by analyzing the Fermi liquid phase of the Hubbard model in more than one dimension. After a sudden switch-on of a weak two-particle interaction to the noninteracting Fermi gas the relaxation of the many-body system is observed. For this purpose, the flow equation transformation is implemented for the Hubbard Hamiltonian. Then the discussion of the momentum distribution function and of the kinetic energy displays a three-step relaxation behavior of the Fermi liquid from the initial perturbation until thermalization is reached. In order to extend the study of sudden switching to arbitrary switching processes the calculation is repeated using the Keldysh perturbation theory. (orig.)

Application of photoreflectance to advanced multilayer structures for photovoltaics

International Nuclear Information System (INIS)

Fuertes Marrón, D.; Cánovas, E.; Artacho, I.; Stanley, C.R.; Steer, M.; Kaizu, T.; Shoji, Y.; Ahsan, N.; Okada, Y.; Barrigón, E.; Rey-Stolle, I.; Algora, C.; Martí, A.; Luque, A.

2013-01-01

Highlights: ► Application of photoreflectance to advanced PV structures. ► Probing optoelectronics of nanostructures and multinary compounds. ► Determination of intensity of electric fields from FKOs. ► Distinguishing different oscillatory phenomena in PR. ► PR as a useful diagnostic tool in QD-, QW-SCs and MJSCs. -- Abstract: Photoreflectance (PR) is a convenient characterization tool able to reveal optoelectronic properties of semiconductor materials and structures. It is a simple non-destructive and contactless technique which can be used in air at room temperature. We will present experimental results of the characterization carried out by means of PR on different types of advanced photovoltaic (PV) structures, including quantum-dot-based prototypes of intermediate band solar cells, quantum-well structures, highly mismatched alloys, and III–V-based multi-junction devices, thereby demonstrating the suitability of PR as a powerful diagnostic tool. Examples will be given to illustrate the value of this spectroscopic technique for PV including (i) the analysis of the PR spectra in search of critical points associated to absorption onsets; (ii) distinguishing signatures related to quantum confinement from those originating from delocalized band states; (iii) determining the intensity of the electric field related to built-in potentials at interfaces according to the Franz–Keldysh (FK) theory; and (v) determining the nature of different oscillatory PR signals among those ascribed to FK-oscillations, interferometric and photorefractive effects. The aim is to attract the interest of researchers in the field of PV to modulation spectroscopies, as they can be helpful in the analysis of their devices

Real-time finite-temperature correlators from AdS/CFT

International Nuclear Information System (INIS)

Barnes, Edwin; Vaman, Diana; Wu Chaolun; Arnold, Peter

2010-01-01

In this paper we use anti-de Sitter/conformal field theory correspondence ideas in conjunction with insights from finite-temperature real-time field theory formalism to compute 3-point correlators of N=4 super Yang-Mills operators, in real time and at finite temperature. To this end, we propose that the gravity field action is integrated only over the right and left quadrants of the Penrose diagram of the anti-de Sitter-Schwarzschild background, with a relative sign between the two terms. For concreteness we consider the case of a scalar field in the black hole background. Using the scalar field Schwinger-Keldysh bulk-to-boundary propagators, we give the general expression of a 3-point real-time Green's correlator. We then note that this particular prescription amounts to adapting the finite-temperature analog of Veltman's circling rules to tree-level Witten diagrams, and comment on the retarded and Feynman scalar bulk-to-boundary propagators. We subject our prescription to several checks: Kubo-Martin-Schwinger identities, the largest time equation, and the zero-temperature limit. When specializing to a particular retarded (causal) 3-point function, we find a very simple answer: the momentum-space correlator is given by three causal (two advanced and one retarded) bulk-to-boundary propagators, meeting at a vertex point which is integrated from spatial infinity to the horizon only. This result is expected based on analyticity, since the retarded n-point functions are obtained by analytic continuation from the imaginary-time Green's function, and based on causality considerations.

Wavelength dependence of femtosecond laser-induced damage threshold of optical materials

Energy Technology Data Exchange (ETDEWEB)

Gallais, L., E-mail: laurent.gallais@fresnel.fr; Douti, D.-B.; Commandré, M. [Aix-Marseille Université, CNRS, Centrale Marseille, Institut Fresnel UMR 7249, 13013 Marseille (France); Batavičiūtė, G.; Pupka, E.; Ščiuka, M.; Smalakys, L.; Sirutkaitis, V.; Melninkaitis, A. [Laser Research Center, Vilnius University, Saulétekio aléja 10, LT-10223 Vilnius (Lithuania)

2015-06-14

An experimental and numerical study of the laser-induced damage of the surface of optical material in the femtosecond regime is presented. The objective of this work is to investigate the different processes involved as a function of the ratio of photon to bandgap energies and compare the results to models based on nonlinear ionization processes. Experimentally, the laser-induced damage threshold of optical materials has been studied in a range of wavelengths from 1030 nm (1.2 eV) to 310 nm (4 eV) with pulse durations of 100 fs with the use of an optical parametric amplifier system. Semi-conductors and dielectrics materials, in bulk or thin film forms, in a range of bandgap from 1 to 10 eV have been tested in order to investigate the scaling of the femtosecond laser damage threshold with the bandgap and photon energy. A model based on the Keldysh photo-ionization theory and the description of impact ionization by a multiple-rate-equation system is used to explain the dependence of laser-breakdown with the photon energy. The calculated damage fluence threshold is found to be consistent with experimental results. From these results, the relative importance of the ionization processes can be derived depending on material properties and irradiation conditions. Moreover, the observed damage morphologies can be described within the framework of the model by taking into account the dynamics of energy deposition with one dimensional propagation simulations in the excited material and thermodynamical considerations.

Application of photoreflectance to advanced multilayer structures for photovoltaics

Energy Technology Data Exchange (ETDEWEB)

Fuertes Marrón, D., E-mail: dfuertes@ies-def.upm.es [Instituto de Energía Solar – ETSIT, Technical University of Madrid, UPM, Madrid (Spain); Cánovas, E.; Artacho, I. [Instituto de Energía Solar – ETSIT, Technical University of Madrid, UPM, Madrid (Spain); Stanley, C.R.; Steer, M. [Department of Electronics and Electrical Engineering, University of Glasgow (United Kingdom); Kaizu, T.; Shoji, Y.; Ahsan, N.; Okada, Y. [Research Center for Advanced Science and Technology, University of Tokyo (Japan); Barrigón, E.; Rey-Stolle, I.; Algora, C.; Martí, A.; Luque, A. [Instituto de Energía Solar – ETSIT, Technical University of Madrid, UPM, Madrid (Spain)

2013-05-15

Highlights: ► Application of photoreflectance to advanced PV structures. ► Probing optoelectronics of nanostructures and multinary compounds. ► Determination of intensity of electric fields from FKOs. ► Distinguishing different oscillatory phenomena in PR. ► PR as a useful diagnostic tool in QD-, QW-SCs and MJSCs. -- Abstract: Photoreflectance (PR) is a convenient characterization tool able to reveal optoelectronic properties of semiconductor materials and structures. It is a simple non-destructive and contactless technique which can be used in air at room temperature. We will present experimental results of the characterization carried out by means of PR on different types of advanced photovoltaic (PV) structures, including quantum-dot-based prototypes of intermediate band solar cells, quantum-well structures, highly mismatched alloys, and III–V-based multi-junction devices, thereby demonstrating the suitability of PR as a powerful diagnostic tool. Examples will be given to illustrate the value of this spectroscopic technique for PV including (i) the analysis of the PR spectra in search of critical points associated to absorption onsets; (ii) distinguishing signatures related to quantum confinement from those originating from delocalized band states; (iii) determining the intensity of the electric field related to built-in potentials at interfaces according to the Franz–Keldysh (FK) theory; and (v) determining the nature of different oscillatory PR signals among those ascribed to FK-oscillations, interferometric and photorefractive effects. The aim is to attract the interest of researchers in the field of PV to modulation spectroscopies, as they can be helpful in the analysis of their devices.

Nonrelativistic quantum electrodynamic approach to photoemission theory

International Nuclear Information System (INIS)

Fujikawa, Takashi; Arai, Hiroko

2005-01-01

A new nonrelativistic many-body theory to analyze X-ray photoelectron spectroscopy (XPS) spectra has been developed on the basis of quantum electrodynamic (QED) Keldysh Green's function approach. To obtain XPS current density we calculate electron Green's function g which partly includes electron-photon interactions. We first separate longitudinal and transverse parts of these Green's functions in the Coulomb gauge. The transverse electron selfenergy describes the electron-photon interaction, whereas the longitudinal electron selfenergy describes the electron-electron interaction. We derive the QED Hedin's equation from which we obtain systematic skeleton expansion in the power series of the screened Coulomb interaction W and the photon Green's function D kl . We show the present theory provides a sound theoretical tool to study complicated many-body processes such as the electron propagation damping, intrinsic, extrinsic losses and their interference, and furthermore, resonant photoemission processes. We have also found the importance of the mixed photon Green's functions D 0k and D k0 which have been supposed to be unimportant for the XPS analyses. They, however, directly describe the radiation field screening. In this work, photon field screening effects are discussed in one-step theory, where the electron-photon interaction operator Δ is proved to be replaced by ε -1 Δ beyond linear approximation. Beyond free photon Green's function approximation, photon scatterings from the electron density are incorporated within the present QED theory. These photon field effects can directly describe the microscopic photon field spatial variation specific to near the surface region and nanoparticle systems