Neue Generation, neue Medien und eine neue Bildung?
Bastiaens, Theo; Schrader, Claudia
2018-01-01
Extract Neue Generation, neue Medien und eine neue Bildung? Theo Bastiaens & Claudia Schrader Abstract This chapter focuses on the question of what influence societal changes have on learners, their learning behavior and the curriculum. Fact is that there has been one major change with an
New transcritical CO{sub 2} compressor series; Neue transkritische CO{sub 2}-Verdichterbaureihe
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Froeschle, Manuel [GEA Bock GmbH, Frickenhausen (Germany)
2011-10-15
The use of natural refrigerants that is recently discussed, is not a new development, but has grown in importance in the last few years. Particularly in the supermarket- and heat pump area, a growing demand in CO{sub 2}-systems for subcritical and transcritical applications could be observed. An extension of the CO{sub 2} components in this area is therefore absolutely necessary. For this reason a completely new transcritical compressor series for maximum pressures of up to 150 bar and extended capacity stages was developed especially. (orig.)
Analisis Struktur Kristal Lifepo4 Olivine Sebagai Bahan Katoda Batere Li-Ion
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Indra Gunawan
2013-10-01
Full Text Available Sintesis LiFePO4 dilakukan dengan pencampuran LiCl, FeCl2.4H2O dan H3PO4 ekuimolar ke dalam air. Homogenasi larutan dilakukan dengan pengaduk magnetic pada suhu 60o C. Prekursor LiFePO4 diperoleh setelah pemanasan 200o C dengan furnace selama 2 jam. Sintering prekursor LiFePO4 dilakukan pada suhu 700o C dengan furnace selama 4 jam dengan aliran N2 untuk membentuk fasa kristalit LiFePO4. Kemurnian fasa dan struktur kristal dianalisis dengan menggunakan XRD. Analisis struktur kristal dari pola difraksi sinar-X dilakukan dengan perangkat lunak FULLPROF. Pengamatan morfologinya dilakukan dengan menggunakan SEM dengan kombinasi energy dispersive spectroscopy (EDS dan pengukuran gugus fungsional dengan FT-IR. Hasil analisis struktur kristal menunjukkan bahwa senyawa LiFePO4 memiliki struktur Kristal orthorhombic, space group 62, simbol Pnma (Hermann-Mauguin dengan parameter kisi a= 6.0019999, b= 10.330000, c= 4.6999998.
BilKristal 2.0: A tool for pattern information extraction from crystal structures
Okuyan, Erhan; Güdükbay, Uğur
2014-01-01
We present a revised version of the BilKristal tool of Okuyan et al. (2007). We converted the development environment into Microsoft Visual Studio 2005 in order to resolve compatibility issues. We added multi-core CPU support and improvements are made to graphics functions in order to improve performance. Discovered bugs are fixed and exporting functionality to a material visualization tool is added.
Directory of Open Access Journals (Sweden)
Nurul - Widiastuti
2014-12-01
Full Text Available Abstract PARTICLE SIZE AND CRYSTAL CONFORMATION OF SYNTHESIZED ZEOLITE-A WITH TETRAPROPYLAMMONIUM HYDROXIDE (TPAOH ADDITION. The aims of this research is to study the effect of tetrapropylammonium hydroxide (TPAOH concentration in the synthesis of zeolite A to its physical characteristics such as crystallinity, crystal conformation and average crystal size. The zeolite A was synthesized with composition 3.165 Na2O : 1.000 Al2O3 : 1.926 SiO2 : 128 H2O : x TPAOH where x was 0; 0.0385; 0.0577; 0.0770; 0.1540 and 4.1602. The zeolite was crystalized under hydrothermal condition in a stainless steel autoclave at 100°C for 5 hours. The resulting crystal was washed with distilled water until pH 8 and then dried in an oven at 80oC for 24 hours. FT-IR and XRD analysis results show that the synthesized zeolite A at x = 4.1602 has the lowest crystallinity. It is estimated due to the mass of TPAOH was four times higger than the mass of zeolite framework components (Si and Al. SEM and PSD (Particle Size Distribution analysis results show that TPAOH concentration affected the crystal conformation and the average size of zeolite A particles. The formation of chained crystal conformation was caused by the electrostatic interactions between TPA+ and negatively charge of zeolite framework. In addition, the particel size of the synthesized zeolite A at x = 0.1540 was 2.024 µm which was smaller than the particel size of the synthesized zeolite A without TPAOH, which was 3.534 µm. Keywords: average size of particles; crystal conformation; TPAOH; zeolite A Abstrak Penelitian ini bertujuan untuk mempelajari pengaruh konsentrasi TPAOH (Tetrapropilamonium hidroksida dalam sintesis zeolit A terhadap sifat fisikanya yang meliputi kekristalan, konformasi kristal dan ukuran rata-rata kristal yang terbentuk. Pada penelitian ini zeolit A disintesis dengan komposisi 3,165 Na2O : 1 Al2O3 : 1,926 SiO2 :128 H2O: x TPAOH. Konsentrasi TPAOH divariasikan dengan
Eine neue Lyrikanthologie / Marianne Vogel
Vogel, Marianne
2000-01-01
Arvustus: Die Freiheit der Kartoffelkeime : Poesie aus Estland : Jaan Kaplinski, Doris Kareva, Hasso Krull, Viivi Luik, Ene Mihkelson, Paul-Eerik Rummo / hrsg. Gregor Laschen ; Nachdichtungen von Marcel Beyer, Friedrich Christian Delius, Katja Lange-Müller, Gregor Laschen, Johann P. Tammen, Ralf Thenior. Bremerhaven : Wirtschaftsverlag NW Verlag für neue Wissenschaft GmbH, 1999. (edition die horen ; 24).
KARAKTERISASI STRUKTUR MIKRO DAN STRUKTUR KRISTAL FILM TEBAL FETIO3 DARI BAHAN MINERAL INDONESIA
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Yus Rama Denny
2016-07-01
Full Text Available Telah dilakukan studi awal pembuatan dan pengolahan bahan mineral Indonesia sebagai bahan dasar pembuatan termistor NTC. Bahan mineral yarosit dari alam dimurnikan dengan larutan HCl, diendapkan dengan menggunakan NH4OH dan dipanaskan pada suhu kalsinasi 700oC selama 2 jam. Pembuatan termistor NTC dilakukan dengan mecampurkan serbuk yarosit hasil pemurnian dan pengendapan dengan TiO2. Pasta termistor FeTiO3 dicetak dipermukaan alumina substrat dengan metode screen printing, kemudian dilakukan pemanasan pada suhu 500oC selama 1 jam diruangan udara dilanjutkan disinter pada suhu 1100oC selama 1 jam diruangan hidrogen. Sifat listrik keramik film tebal hasil sinter diukur pada berbagai suhu. Struktur kristal dievaluasi dengan difraksi sinar x (XRD, dan struktur mikro dievaluasi dengan menggunakan SEM (Scanning Electron Microscope. Data analisis XRD memperlihatkan bahwa seluruh keramik film tebal berstruktur heksagonal (Illiminite. Data struktur mikro dan sifat listrik memperlihatkan bahwa termistor dari yarosit memenuhi kebutuhan pasar.
Neue Medien für die Grundschule
Schlegel, Clemens Maria
2003-01-01
Neue Medien für die Grundschule : themenbezogene, fächerübergreifende Lernmaterialien mit musisch-ästhetischem Schwerpunkt auf CD, CD-ROM und Printmedien / K. Ebner ; Th. Schaffert ; C. M. Schlegel. - Rangendingen. - Bd. 1. "saustark" : Lieder, Gedichte, Bilder, Hörspiel, Sachtexte, Arbeitsblätter rund um’s Wildschwein. - 2003
Neue Technologien und Erziehung/Bildung
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Norbert Meder
2015-03-01
Full Text Available Es wird gezeigt, dass Computertechnologie zur pädagogischen Aufgabe wird, weil es sich um eine Kulturtechnik handelt. Ausgehend vom Begriff der Bildung als Ausbildung eines Verhältnisses zu mir selbst, zu anderen und zur Welt wird Computertechnologie als Problemlösungsautomat, Sprachentwicklungsmaschine, Simulationsmaschine, Kommunikationsmaschine, Bildschirmgestaltungsmaschine, Schlüsselloch und Superzeichenmaschine analysiert. Die Analyse zeigt, daß Computertechnologie ein neues Bildungsideal erforderlich macht: Den Sprachspieler. Der Sprachspieler kennt sein doppelt reflexives Verhältnis zu sich selbst, zu anderen und zur Welt und beherrscht so das Spiel mit der Sprache zur Ausübung von Macht und Gewalt in der Informationsgesellschaft. Der Text geht in folgenden Schritten vor: Zunächst werden mit den Begriffen "Kulturtechnik" und "Bildung" die Prinzipien der Analyse bestimmt. Anschließend wird eine Sachanalyse der Computertechnologie durchgeführt und die gefundenen Eigenschaften jeweils in Relation zum Kulturtechnik- und Bildungsbegriff gesetzt. Computer technology becomes a challenge for education if it is understood as a cultural technology. Starting with the term bildung as the formation of relations to my self, to others and the world, computer technology is analysed as problem solving machine, language development machine, simulation machine, communication machine, screen design machine, keyhole, and super sign machine. It is shown, that computertechnology reqiures a new ideal for bildung: the language player. The language player knows his double reflective relation to his self, to others and the world and thus rules the game with language that is used to excercise power and force in the information society. The text argues in the following steps: At first the principles of the analyses are defined with the terms cultural technology and bildung. Susequently, computer technology is analysed. The identified qualities are finally
Diffuser Haarausfall und klinische Endokrinologie: Neue Erkenntnisse
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Liptak J
2013-01-01
zu kontrollieren. Auch zur Rolle des Eisenhaushaltes bzw. des Ferritinspiegels existieren widersprüchliche Daten. Ein Ferritinwert 40 μg/l könnte mit verstärktem Haarausfall assoziiert sein. Unklar bleibt, ob eine Eisensubstitution in diesen Fällen zum Nachwachsen der Haare führt. Verschiedene Hormone können endokrin, autokrin oder parakrin vermittelt das Haarwachstum beeinflussen. Neue Studien können Aufschluss über das komplexe Zusammenspiel diverser Regelkreisläufe geben und mögliche zukünftige Therapiemöglichkeiten aufzeigen.
Usachev, A. D.; Zobnin, A. V.; Shonenkov, A. V.; Lipaev, A. M.; Molotkov, V. I.; Petrov, O. F.; Fortov, V. E.; Pustyl'nik, M. Y.; Fink, M. A.; Thoma, M. A.; Thomas, H. M.; Padalka, G. I.
2018-01-01
Influence of the elongated dust cloud on the intensities of different neon spectral lines in visible and near ir spectral ranges in the uniform positive column has been experimentally investigated using the Russian-European space apparatus “Plasma Kristall-4” (SA PK-4) on board of the International Space Station (ISS). The investigation was performed in the low pressure (0.5 mbar) direct current (dc, 1 mA) gas discharge in neon. Microgravity allowed us to perform experiments with a large dust cloud in the steady-state regime. To avoid the dust cloud drift in the dc electric field a switching dc polarity discharge mode has been applied. During the experiment a dust cloud of 9 mm in diameter in the discharge tube of 30 mm in diameter with the length of about 100 mm has been observed in the steady-state regime. In this regard, the intensities of neon spectral lines corresponding to 3p → 3s electronic transitions have increased by a factor of 1.4 times, while the intensities of neon spectral lines corresponding to 3d → 3p electronic transitions have increased by a factor of 1.6 times. The observed phenomenon is explained on the basis of the Schottky approach by a self-consistent rising dc electric field in the dusty plasma cloud resulting in an increase of the electron temperature.
Neues aus dem Forschungsfeld Deutsch als Zweitsprache. Sammelrezension
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Claus Altmayer
2015-03-01
Full Text Available Neues aus dem Forschungsfeld Deutsch als Zweitsprache. Sammelrezension (Teil 2 von Bernt Ahrenholz (Hrsg. (2009, Empirische Befunde zu DaZ-Erwerb und Sprachförderung. Beiträge aus dem 3. ‚Workshop Kinder mit Migrationshintergrund‘; Karen Schramm & Christoph Schröder (Hrsg. (2009, Empirische Zugänge zu Spracherwerb und Sprachförderung in Deutsch als Zweitsprache; Stefan Jeuk (2010, Deutsch als Zweitsprache in der Schule. Grundlagen - Diagnose – Förderung
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Kranz, H.R. [Siemens AG, Karlsruhe (Germany)
1995-12-31
In chapter 9 of the anthology about building control new facade concepts are presented, including new facade technologies, conductivity of new facade concepts and combination of new technologies. The whole complex ranging from statics to dynamics is explained. (BWI) [Deutsch] Kapitel 9 des Sammelbandes ueber Building Control stellt neue Fassadenkonzepte vor: Neue Fassadentechnologien, Leitfunktionen neuer Fassadenkonzepte, Kombination neuer Technologien. In diesem Zusammenhang wird der gesamte Komplex von der Statik bis zur Dynamik behandelt. (BWI)
Diagnostik der Endometriose: Neue Tests aus peripherem Blut
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Hornung D
2008-01-01
Full Text Available Endometriose wird auch heute noch zu selten rechtzeitig erkannt. Es vergehen durchschnittlich acht Jahre, bis die korrekte Diagnose gestellt wird. Eine rechtzeitige Diagnosestellung würde jedoch der Patientin einen langen Leidensweg ersparen, die Größe des operativen Eingriffs reduzieren und die Rezidivrate verringern. Die klinische Diagnose liegt in der Verantwortung erfahrener Gynäkologen. Durch eine sorgfältige Anamneseerhebung und eine vollständige gynäkologische bimanuelle rektovaginale Untersuchung einschließlich Ultraschalluntersuchung kann die Diagnose bei vielen Patientinnen vermutet werden. Aufgrund eines komplexen Erscheinungsbildes und mangelnder pathognomonischer Symptome bei manchen Frauen kann die richtige Diagnosestellung dennoch ein schwieriges Unterfangen sein. Daher richten sich neue Forschungsansätze auf die Entwicklung von Bluttests für Endometriose, die die Dauer bis zur korrekten Diagnose für viele betroffene Frauen verkürzen könnten. Die Laparoskopie wird derzeit als Goldstandard in der Diagnose der Endometriose betrachtet. Dieser minimal-invasive Eingriff beherbergt jedoch ein zwar geringes, aber dennoch vorhandenes Morbiditäts- und Mortalitätsrisiko. Unsere Übersichtsarbeit fasst die wichtigsten diagnostischen Bluttests für Endometriose zusammen, die bisher jedoch noch nicht für den Routineeinsatz in der Praxis zur Verfügung stehen.
Parnassiana nova : XLVII. Neue Unterarten von Parnassius apollo L. und Parnassius mnemosyne L.
Eisner, C.
1974-01-01
1. DREI NEUE PARNASSIUS APOLLO L. UNTERARTEN AUS SPANIEN Die Herren P. Capdeville und P. C. Rougeot haben in den letzten Jahren die verschiedenen Flugplätze von Parnassius apollo L. in Spanien aufgesucht und eine Anzahl neuer Unterarten aufgestellt. Die Kenntnis wird ergänzt durch die Beschreibung
Neue Phoriden aus Belgisch-Kongo, gesammelt von Dr. Jos. Bequaert
Schmitz, H.
1916-01-01
Durch die Güte des Herrn Dr. Jos. Bequaert konnte ich einige Phoriden untersuchen, die dieser eifrige Entomologe während seines letzten Aufenthalts am Kongo und im Ruwenzori-Gebirge gesammelt hat. Es lagen im ganzen 5 Arten vor, darunter zwei neue, die im folgenden beschrieben werden. Von den drei
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Saemann, D.; Weichert, R.; Werner, S. [Siemens AG, Erlangen (Germany). Bereich Energieuebertragung und -verteilung
1998-04-06
Todays market and the trend towards globalization of business both call for new products. The authors describe the new generation of medium-voltage switchgears and circuit-breakers, along with the benefit they bring for customers. (orig./RHM) [Deutsch] Der Markt und die Globalisierung des Geschaeftes fordern neue Produkte. Die Verfasser beschreiben die neue Generation von Mittelspannungsschaltanlagen und -schaltern sowie deren Nutzen fuer die Anwender. (orig./RHM)
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Busse, H.; Oswald, H. [MVV-Energie AG im Internationalen Gasconsulting, Duggendorf (Germany)
2000-03-01
The radical changes in national and international markets in recent years will have a long-term effect on the future development of industry and of energy supply utilities. The dynamics and complexity of these processes are producing new challenges. These are leading to a departure from rigid structures in the supply enterprises, towards functional, process-oriented organizational structures. In addition, a whole series of new business activities is arising. One of these new strategic areas of business is consulting. In Germany, a range of regional and municipal supply utilities now offer consulting services for third parties on an intensified basis around the world. Since about 1990, larger municipal technical service organizations and regional energy supply utilities have been working on numerous projects both within Germany and abroad. It has become apparent that it is necessary to take a long breath (one to four years) from the time of obtaining the sale until the award of contract, particularly in the case of foreign projects. In addition to the demand for technical know-how, BOT (Build, Operate, Transfer) projects and assistance with financing and matters regarding structure, setting-up and organization of possible new projects are of particular interest. (orig.) [German] Die umfassenden Veraenderungen der nationalen und internationalen Maerkte in den letzten Jahren wirken nachhaltig auf die zukuenftige Entwicklung der Industrie und der Energieversorgungsunternehmen. Aus der Dynamik und Komplexitaet der Prozesse resultieren neue Herausforderungen. Diese fuehren zur Abkehr von starren Strukturen in den Versorgungsunternehmen hin zu funktionalen am Prozess orientierten Organisationsstrukturen. Zusaetzlich leiten sich daraus eine Reihe neuer Geschaeftsfelder ab. Eines dieser neuen strategischen Geschaeftsfelder ist Consulting. In Deutschland bieten verschiedene regional und kommunal taetige Versorgungsunternehmen verstaerkt Beratungsleistung fuer Dritte weltweit
Neue Shandite und Parkerite. Darstellung und röntgenographische Charakterisierung
Anusca, Irina
2009-01-01
Das Ziel dieser Arbeit war es, neue Verbindungen mit Shandit- und Parkeritstruktur zu darstellen und mittels röntgenographischen Methoden (Pulverdiffraktometrie und Einkristallanalyse), das thermische Verhalten durch DTA / DSC - Messungen und Elektronenmikroskopische Untersuchungen (REM, EDX) zu charakterisieren. Die vorliegende Arbeit ist wie folgt im zwei Themen gegliedert: Shandite und Parkerite. Der ersten Teil dieser Arbeit befaßt sich mit metallreichen ternären Chalkogeniden M3A2X2, ...
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Mueller-Kraenner, S.
2007-07-01
The author presents a convincing final speech for a cooperative energy policy in an European frame, which supplies our economy with energy from different sources: payable, nonpolluting, reliable. The main topics are: what is reliability of energy supply; new measuring of the world during exploitation of new energy resources; energy superpower Russia; way up of Asia; common European energy policy; the defence of the last paradise's; ways out of dependency - sun or atom; the power of right and the diplomacy of the future. (GL) [German] Beim Run auf die letzten Energieressourcen wird derzeit die Welt neu vermessen. Die internationalen Machtverhaeltnisse verschieben sich entlang der Frage, wer die Ressourcen und den Zugang zum Weltmarkt kontrolliert. Das neue Sorgenkind der Weltgemeinschaft heisst Energiesicherheit. Der Begriff meint nicht nur die sichere und bezahlbare Versorgung mit Energie, sondern eine Politik, die im Kampf um Rohstoffe nicht neue Konflikte schafft und die Umwelt schaedigt. Was bedeutet es, wenn Russland die neue Erdgaspipeline durch die Ostsee fuehren will, ueber Meeresboden, in dem die Giftgasgranaten zweier Weltkriege liegen? Gibt es eine Alternative zu der gefaehrlichen Grossmachtpolitik, die Laender wie China, die USA und Russland derzeit verfolgen? Als Antwort auf die weltweite Energiekrise plaediert Mueller-Kraenner fuer eine kooperative Energiepolitik im europaeischen Rahmen, die unsere Wirtschaft mit Energie aus unterschiedlichen Quellen versorgt: bezahlbar, umweltfreundlich, sicher. (orig.)
Von Nischen und Infrastrukturen - Herausforderungen und neue Ansätze politischer Technologien
Directory of Open Access Journals (Sweden)
Felix Stalder
2011-06-01
Full Text Available Neue Technologien aus dem aktivistischen Umfeld bieten radikale Alternativen zu kultureller Nischenbildung und zentralisierten Web 2.0-Infrastrukturen. Die sozialen und politischen Realitäten der Digitalisierung und Vernetzung sind heute von zwei konstitutiven, aber grundsätzlich unterschiedlichen, ja teilweise sogar entgegengesetzten Dynamiken geprägt. Beide stellen den Medienaktivismus vor neue Herausforderungen. Zum einen können wir ein Aufblühen neuer kultureller Nischen und horizontaler Organisationsformen beobachten. Zum anderen erleben wir gleichzeitig eine enorme Zentralisierung und Konzentration auf der Ebene der Plattformen, welche einen grossen Teil der infrastrukturellen Grundlage des Wachstum der Nischen und neuen Kooperationsmuster darstellen. Nachdem der Aufbau alternativer Infrastrukturen – Zeitschriften, TV Kanäle und Internetplattformen – in den ersten 30 Jahren medienaktivistischer Projekte eine grosse Rolle gespielt hat (Stalder 2008 sind diese Fragen in den letzten 10 Jahren etwas in den Hintergrund getreten. Denn die Komplexität der Infrastrukturen nahm stetig zu, was es immer aufwendiger machte, sie zu betreiben und die neuen, offene Plattformen, wie sie für Web 2.0 typisch sind, stellten allen - scheinbar ohne Einschränkungen - mächtige Werkzeuge zu Verfügung. Warum eine eigene Plattform betreiben, wenn grosse professionelle Anbieter das besser, sicherer und kostenfrei anbieten? Heute sind die Probleme dieser Entwicklungen aber deutlich zu erkennen. Im Folgenden werden die Herausforderungen dieser Nischenbildung, die dunkle Seite der zentralisierten Infrastrukturen sowie die darauf reagierenden, neue Entwürfe für de-zentrale Infrastrukturen skizziert.
„NEW“ – Neue Energien West eG und Bürger-Energiegenossenschaft West eG
Amschler, Helmut
2014-01-01
Helmut Amschler, Vorstand der Stadtwerke Grafenwöhr, stellt in seinem Beitrag 2 konkrete Genossenschaften – die Neue Energien West eG und die Bürger-Energiegenossenschaft West eG vor. Dabei diskutiert er u. a. Kriterien wie Bürgerbeteiligung und Transparenz.
The new TSI {sup registered}; Der neue TSI {sup registered}
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Hadler, J.; Neusser, H.J.; Szengel, R.; Middendorf, H.; Theobald, J.; Moeller, N. [Volkswagen AG, Wolfsburg (Germany)
2012-11-01
With the introduction of the new modular transverse platform, Volkswagen also undertook a fundamental rework of its engine platforms. As part of that process, the highly successful EA111 series of small four-cylinder TSI engines has been completely renewed in order to achieve the optimum basis from which to meet future demands in vehicle packaging, emissions and CO{sub 2} pollution, as well as modularity. Systematic aluminium lightweight construction with four-valve technology and an exhaust manifold integrated into the cylinder head form the technical heart of the new EA211 engine generation. For ongoing optimization of friction characteristics, the new TSI engines feature a toothed belt drive and a monolithic valve train module with roller bearings. The engines are based on a carefully tiered, tribologically optimized system platform. The next few years will see the new TSI engines with 1.2 and 1.4 l displacement enter service worldwide. Their compact and modular construction means that they can be adapted flexibly to accommodate further engine measures and variations, as well as an array of electrification and hybrid concepts for further reduction in fuel consumption. The new 1.4 l TSI engine with 103 kW and cylinder deactivation represents the most advanced TSI to date for minimization of fuel consumption. The further developed AVS system enables the valve set for two of the cylinders to be deactivated, thus disabling the cylinders in accordance with demand. Its first application is planned for the Polo platform. The new range encompasses a displacement spectrum from 1.0 to 1.6 l with three and four-cylinder engines. It incorporates not only the further developed and highly successful Volkswagen TSI technology, but also takes into consideration MPI applications for growth markets and entry models. (orig.)
Solar building construction - new technologies; Solares Bauen - Neue Technologien fuer Gebaeude
Energy Technology Data Exchange (ETDEWEB)
Luther, J.; Voss, K.; Wittwer, V. [Fraunhofer-Inst. fuer Solare Energiesysteme, Freiburg (Germany). Abt. ``Thermische und Optische Systeme``
1998-02-01
There is an increasing demand for integrated building concepts in order to reduce energy consumption. Building design, construction and heating, ventilation and air-conditioning (HVAC) technology are decisive in this respect. Thus, an essentially higher energy efficiency is achieved and solar energy becomes the main energy source. An `active building envelope` assumes the task of controlling the energy flows between inside and outside. This paper reports on new components, system concepts and planning tools for solar building. (orig.) [Deutsch] Fuer zukuenftige Bauten werden in hohem Masse Forderungen nach integrierten Konzepten zur Begrenzung des Energieverbrauchs gestellt. Gestalt, Konstruktion und Klimatechnik sind dabei massgebliche Einflussfaktoren. Hierdurch wird eine wesentlich hoehere Energieeffizienz erzielt und Solarenergie kann die uebrigen Energiequellen zurueckdraengen. Eine `aktive Gebaeudehuelle` uebernimmt die Aufgabe, den Energiefluss zwischen Innen und Aussen zu steuern. Der Beitrag berichtet ueber neue Komponenten, Systemkonzepte und Planungswerkzeuge fuer das Solare Bauen. (orig.)
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Tuttlies F
2008-01-01
Full Text Available Mit Einführung des ENZIAN-Scores wurde eine neue Klassifikation für die Erkrankung der Endometriose vorgestellt, die insbesondere die tief infiltrierende Endometriose mit der typischen retroperitonealen Manifestation berücksichtigt. In Anlehnung an onkologische Stadieneinteilungen wurde eine Einteilung in vier Schweregrade gewählt, die mit drei Raumachsen zur Lokalisation der Erkrankung erweitert wurden. Der ENZIAN-Score versteht sich als eine Ergänzung zu dem bekannten rAFS-System (revised American Fertility and Sterility Score, das sich lediglich auf die intraperitoneale Manifestation der Endometriose anwenden lässt. In vielen Fällen ist die rAFS-Klassifikation nur bedingt oder gar nicht geeignet, die Ausdehnung und den Schweregrad der Erkrankung darzustellen. Am Kollektiv von Patientinnen mit Darmendometriose wurde der ENZIAN- Score retrospektiv auf die klinische Wertigkeit hin untersucht und bewährte sich in der klinischen Anwendung.
Energy Technology Data Exchange (ETDEWEB)
Cordes, Joern
2009-02-13
In this work, Aluminum was vaporized in a PACIS cluster source, while molecular Hydrogen was also provided, thus producing Aluminum hydride clusters. These clusters were mass selected and investigated via Photoelectron Spectroscopy with anions in order to determine their electronic structure. In a cooperation with Puru Jena et al. at the Virginia Commonwealth University, electronic and geometric structures of the clusters were also calculated using Density Functional Theory. A group of clusters, specifically Al{sub 4}H{sub 4}, Al{sub 4}H{sub 6} and a series of clusters Al{sub n}H{sub n+2} (5 {<=} n {<=} 8) showed large HOMO-LUMO-Gaps and relatively small adiabatic electron affinities, hinting towards an increased stability of these clusters. The resemblance of the structures of already known and stable Boranes (BnHm) led to investigations whether ''Wade's Rules'' could also be applied to the new Alanes Al{sub n}H{sub m}. Comparison of the experimentally found values for the HOMO-LUMO-Gap, Adiabatic electron Affinity and Vertical Detachment Energy with the calculated values led to geometric structures of the ground states that, in case of the clusters Al{sub n}H{sub n+2} (5 {<=} n {<=} 8) follow Wade's (n+1) rule: They adopt hollow, cage-like closo-structures with one terminal Hydrogen atom per Aluminum atom and two additional Hydrogen atoms on bridge-sites. The clusters Al{sub 4}H{sub 4} and Al{sub 4}H{sub 6} have tetrahedron-shaped structures. While Al{sub 4}H{sub 4} is a perfect tetrahedron, Al{sub 4}H{sub 6} adopts a slightly distorted tetrahedral geometry with D{sub 2d} symmetry and two Hydrogen atoms on bridge sites. Furthermore, Al{sub 4}H{sub 6} showed the biggest HOMO-LUMO-Gap of all investigated clusters with a value of 1.9 {+-} 0.1 eV. These findings seem to contradict Wade's (n+1) rule, but can be understood in terms of the Polyhedral Skeletal Electron Pair Theory (PSEPT). The molecular orbitals predicted by the PSEPT
Neue Aufgaben für wissenschaftliche Bibliotheken: Das Beispiel Open Science Lab
Directory of Open Access Journals (Sweden)
Lambert Heller
2015-10-01
Full Text Available Vor dem Hintergrund des Aufkommens vieler neuer digitaler Werkzeuge und Methoden zur Unterstützung des wissenschaftlichen Arbeitens wird seit etwa fünf Jahren unter wissenschaftlichen Bibliothekaren in Deutschland immer häufiger über Innovationsmanagement diskutiert. Wie lassen sich relevante Trends und Herausforderungen rechtzeitig erkennen und mit den begrenzten Ressourcen einer Einrichtung des öffentlichen Dienstes adäquat aufgreifen, bis hin zu einer Veränderung der Bibliotheksstrategie? Der Beitrag behandelt das Modell des an der Technischen Informationsbibliothek Hannover (TIB 2013 ins Leben gerufenen Open Science Lab. Unter Leitung des Autors werden Trends beobachtet und aufgegriffen, um in enger Zusammenarbeit mit Wissenschaftlern und Wissenschaftlerinnen neue digitale Werkzeuge und Methoden zu erproben, eine neue Informationspraxis zu kultivieren und daraus Innovationen für das Dienste-Spektrum der Bibliothek abzuleiten. Dies wird beispielhaft anhand der beiden Schwerpunktthemen kollaboratives Schreiben sowie linked-data-basierte Forschungsinformationssysteme (FIS geschildert und diskutiert. Given the rise of many new digital tools and methods for supporting scientific work, the last five years have seen a lot of discussion amongst German academic librarians about innovation management. How can we discover relevant trends and challenges in time and respond to them adequately up to the point of changing whole library strategies, despite the limited resources of a public sector institution? The paper presents the model of the Open Science Lab which was set up at the German National Library of Science and Technology (TIB Hannover in 2013. Under the direction of the author and in close collaboration with scientific communities, the lab group keeps track of trends and selects some of them in order to try out new tools and methods. The ultimate aim is to cultivate new information practices and develop new, innovative
The new cooling tower principle Matrix-Multiflow; Das neue Kuehlturmprinzip Matrix-Multiflow
Energy Technology Data Exchange (ETDEWEB)
Juran, H. [Technisches Pressebuero, Koenigswinter (Germany); Plocki, O. [Marley Kuehlturm GmbH, Duesseldorf (Germany)
1995-11-01
All cooling tower construction built so far can be assigned fluidically to the cross-flow or counterflow principle. The new Matrix-Multiflow System, which was developed in cell-construction with ducted aeration for large cooling capacities of the industry and energy economy, corresponds basically to none of the two principles, even if constructively it represents a modified cross-flow tower with cross-flow film internals. In the following the development, function, construction, defined properties and application demand of this patented cooling tower principle is described. It takes over adn extends the typical advantages of the cross-flow principle and minimizes the disadvantages with regard to the counterflow principle. (orig.) [Deutsch] Alle bisher gebauten Kuehlturmausfuehrungen lassen sich stroemungstechnisch dem Kreuz- oder Gegenstromprinzip zuordnen. Das neue Matrix-Multiflow-System, das in Zellenbauweise mit Zwangsbelueftung fuer grosse Kuehlleistungen der Industrie und Energiewirtschaft entwickelt wurde, entspricht im Grunde keinem der beiden Prinzipien, auch wenn es konstruktiv einen modifizierten Kreuzstromturm mit Kreuzstromfilmeinbauten darstellt. Nachfolgend werden Entwicklung, Funktion, Ausfuehrung, markante Eigenschaften und Anwendungsbedarf dieses patentierten Kuehlturmprinzips beschrieben. Es uebernimmt oder erweitert die typischen Vorteile des Kreuzstromprinzips und minimiert die Nachteile gegenueber dem Gegenstromprinzip weitgehend. (orig.)
Crowdsourcing – neue Möglichkeiten und Grenzen für Bildarchive
Directory of Open Access Journals (Sweden)
Nicole Graf
2014-12-01
Full Text Available Crowdsourcing ist das Outsourcing von Teilaufgaben von Institutionen an Freiwillige, die diese Aufgaben aufgrund von Interesse und spezifischem (Fach-Wissen in der Freizeit erledigen helfen. Dank Internet wurde diese Art von Mitarbeit auf ehrenamtlicher Basis technisch vereinfacht, man spricht auch von Crowdsourcing 2.0. Auch im kulturellen Sektor der Gedächtnisinstitutionen hält diese neue Form der Generierung und des Teilens von Wissen langsam Einzug. Das Bildarchiv der ETH-Bibliothek hat sich diese Web-2.0-Technik für die Erschliessung des Fotoarchivs der Swissair in einem vierjährigen Projekt (Laufzeit 2009–2013 zunutze gemacht. Der Beitrag legt den Schwerpunkt auf die Erfahrungen in Bezug auf den Redaktionsworkflow, der technischen Umsetzung, des Betreuungsaufwandes und der Öffentlichkeitsarbeit. Crowdsourcing as a kind of voluntary collaboration has been made considerably easier by the Internet, from a technical perspective and there is now talk of crowdsourcing 2.0. Slowly but surely, this new form of generating and sharing knowledge is also finding its way into the cultural sector, e. g. the memory institutions. The Image Archive of the ETH-Bibliothek took advantage of this Web 2.0 technology to catalogue the Swissair photo archive in a four-year project (2009-2013. The paper focuses on experiences concerning the editorial workflow, the technical realisation, the level of technical support required and public relations.
Schönheit und andere Provokationen - Eine neue evolutionsbiologische Theorie der Kunst
Junker, Thomas
Die Evolution hat viele spektakuläre Phänomene hervorgebracht - von der Eleganz des Vogelflugs über die gigantischen Körper der Dinosaurier und die farbenprächtige Vielfalt der Korallenriffe bis hin zu ihrem jüngsten Geniestreich - der menschlichen Kunst. Die schönen Künste - Malerei, Bildhauerei und Architektur, Theater, Tanz, Oper und Filmkunst, Musik und Literatur - Produkte der Evolution? Diese Vorstellung mutet vielen Menschen fremd an, aber wie könnte es anders sein? Denn wenn Charles Darwin recht hat, dann sind nicht nur die körperlichen Merkmale der Menschen als Antworten auf die Erfordernisse des Lebens entstanden, sondern auch ihre geistigen Fähigkeiten und Verhaltensweisen. Im Jahr 1859 hatte er auf den letzten Seiten seines berühmten Buches über die Entstehung der Arten eine kühne Prophezeiung gemacht: Durch die Evolutionstheorie werde es "zu einer bemerkenswerten Revolution in der Naturwissenschaft kommen […]. Die Psychologie wird auf die neue Grundlage gestellt, dass jede geistige Kraft und Fähigkeit notwendigerweise durch graduelle Übergänge erworben wird“ (Darwin 1859, S. 484, 488; Junker 2008).
Editorial: Neue Fernsehserien und ihr Potenzial für eine kritische Medienpädagogik
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Elena Pilipets
2016-07-01
Full Text Available Die Auseinandersetzung mit Fernsehserien spielt eine wichtige Rolle im Leben vieler Menschen weltweit: Die Serien wiederholen und entwickeln sich, sind Teil der Medienroutine, begleiten uns im Alltag. Was sie erzählen, entsteht daher nicht unerwartet oder zufällig, sondern verweist auf eine langfristige Ausprägung populärkultureller Ausdrucksformen, die kognitiv und ästhetisch sowie anwendungsorientiert ist (Eichner et al. 2013. Nichtsdestotrotz hatten die populären Serien schon immer ‹unvorhersehbare Folgen›. Vor allem Fernsehserien, die angesichts enormer Veränderungen in verschiedenen Bereichen der kulturindustriellen Medienunterhaltung seit den 1980er- und vor allem den 1990er- Jahren als anspruchsvolle und experimentelle erzählerische Formen wiederentdeckt wurden, scheinen sich permanent aufs Neue zu erfinden. Episode für Episode, Staffel für Staffel, irgendwo im Dazwischen von «coming next…» und «previously on» (Meteling et al. 2010 entfalten sich komplexe mediale Erfahrungswelten, indem sie dem performativen Imperativ popkultureller Überbietung zufolge an der kontinuierlichen Erweiterung ihrer narrativen und medialen Möglichkeiten arbeiten (Jahn-Sudmann/Kelleter 2012. Diese prozessorientierte Fähigkeit der Fernsehserie, aus der eigenen Transformation zu lernen, wird im Rahmen dieses Themenheftes hinsichtlich folgender (medien-pädagogischer Aspekte diskutiert:
Zielsprache Englisch, 1976
1976-01-01
The phonetic symbols in the "Advanced Learners Dictionary" (Oxford University Press, London) are discussed critically in articles by L. Alfes, H. Arndt, E. Bauch, G. Dahlmann-Resing, W. Friedrich, E. Germer, B. Haycraft, H. P. Kelz. Reference is made to an earlier article "Neue Zeichen", by H. G. Hoffmann. (Text is in German.)…
Schmincke, Horst Kurt
1979-01-01
Eine neue Gattung und Art der Familie Parabathynellidae, Psalidobathynella stocki gen. n., sp. n., wird beschrieben. Die Tiere stammen aus einer Quelle und einem Brunnen von der Halbinsel Paraguana in Venezuela. Es handelt sich um sehr urtümliche Parabathynellidae. Da Männchen bisher nicht bekannt
Tolstov, Georgi P
1962-01-01
Richard A. Silverman's series of translations of outstanding Russian textbooks and monographs is well-known to people in the fields of mathematics, physics, and engineering. The present book is another excellent text from this series, a valuable addition to the English-language literature on Fourier series.This edition is organized into nine well-defined chapters: Trigonometric Fourier Series, Orthogonal Systems, Convergence of Trigonometric Fourier Series, Trigonometric Series with Decreasing Coefficients, Operations on Fourier Series, Summation of Trigonometric Fourier Series, Double Fourie
Energy Technology Data Exchange (ETDEWEB)
Anon.
1999-01-01
The prism has a lively inner life. Together with the round UFA Palace cinema from the 1970s it comprises more than 15 cinema halls with 4550 seats. Eight of the halls are located in the new building. The room climate in the halls is kept at a near constant 21 C during performances. The core zone accommodating the cinema halls is conditioned by an air circuit comprising altogether eight air exchange plants with integrated heating and cooling for the eight halls. Outside the seated areas, i.e. in the entrance zone and other short-time occupied places the temperature is normally controlled by the outgoing air on its way out into the street. The cash office in the lobby has a supplementary floor heating system to keep the employees` feet warm. [Deutsch] Das Prisma hat ein bewegtes Innenleben. Es handelt sich um den Kristall-Ufa-Palast, ein Kino. Gemeinsam mit dem danebenstehenden Ufa-Palast-Rundkino aus den 70er Jahren verfuegt es ueber 15 Saele mit 4550 Plaetzen, davon acht Kinos in dem Neubau. Das Raumklima in den einzelnen Saelen wird waehrend der Vorstellung nahezu konstant auf 21 C gehalten. Die Kernzone mit den Kinosaelen haengt an einem Klimakreis mit insgesamt acht Zu- und Abluftanlagen mit Heiz- und Kuehlfunktion fuer die acht Saele. Ausserhalb dieser eigentlichen Aufenthaltszone temperiert in der Regel die Fortluft den Eingangs- und Nicht-Aufenthaltsbereich, bevor sie zur Strasse hin entweicht. Der Kinokassenraum in der Lobby wird zusaetzlich beheizt. Fuer warme Fuesse sorgt eine Fussbodenheizung. (orig./MSK)
Energy Technology Data Exchange (ETDEWEB)
Sigwart, A.; Bockemuehl, P. [Ford-Werke AG, Koeln (Germany)
2001-07-01
A reliable and durable design of electronic and electrical components of a vehicle is without an adequate verification method inconceivable. Until now the supplier were responsible to verify their components on test benches. Later in the development process the durability is being tested on the proving ground or on hot/cold climate trips. This has been found as not robust enough to deliver high quality to our customer. Due to complex relation between the subsystems and various failure modes a new verification method has been developed. To overcome quality issues a project has been initiated to combine road load conditions, full environmental conditions with driverless actuation. Central part of the project is a small handling robot positioned in the car instead of the driver simulating the customer behaviors by actuating all electrical switches, while the vehicle is in an environmental test chamber (temperature, humidity and sunload) and on a 4-poster road simulator. With an automated procedure the road loads and environmental conditions are combined with the actuation of all electrical components. With this method more complex tasks can be realized. It is now possible to simulate real world customer usage within a short time frame. (orig.) [German] Ein ausfallsicheres Design elektrischer / elektronischer Komponenten im Fahrzeug kann ohne einen Versuch mit kundenrelevanten Parametern nicht realisiert werden. Bisher wurden diese Komponenten beim Lieferanten als Einzelteil und spaeter im Entwicklungsprozess dann im Fahrzeug waehrend der Dauerlauferprobung getestet. Aufgrund der komplexen Zusammenhaenge aller Teilsysteme und der Vielfalt von Versagensarten wurde bei Ford ein neues Testverfahren, ein sog. Key Life Test, entwickelt. Key Life Tests konzentrieren sich auf die wichtigsten Beanspruchungen, die fuer den Funktionsverlust und/oder die im realen Einsatz auftretenden Ausfallarten verantwortlich sind. Die Basis hierfuer bildet ein klimatisierter Testroboter, der
Energy Technology Data Exchange (ETDEWEB)
Leithner, R.; Dobrowolski, R.; Gresch, H. [Technische Univ. Braunschweig (Germany). Inst. fuer Waerme- und Brennstofftechnik
1998-06-01
, um eine moeglichst hohe Wirtschaftlichkeit zu erreichen. Der Wirkungsgrad der Anlage sollte moeglichst hoch sein, insbesondere auch in Zeiten in denen keine Solarwaerme zur Verfuegung steht (z.B. nachts); trotzdem sollte die Solarwaerme auf moeglichst niedrigem Temperaturniveau eingebunden werden, um auf teure Vorrichtungen zur Konzentration weitgehend verzichten zu koennen. Diese widerspruechlichen Forderungen koennen durch ein neues Konzept erfuellt werden, bei dem eine GuD-Kombianlage statt mit hohem Luftueberschuss mit Wassereinspritzung in die komprimierte Luft betrieben wird, wobei dieses Wasser entsprechend dem Partialdruck bei Temperaturen kleiner ca. 170 C durch Solarwaerme verdampft wird. (orig./MSK)
Energy Technology Data Exchange (ETDEWEB)
Stadelmann, M. [Verband der Schweizerischen Gasindustrie, Zurich (Switzerland)
1998-05-01
Direct-fuelled absorption-type refrigerators are recently being used not only for cold generation but also for heat generation with a flow temperature of 80 C. They can cool, heat, or cool and heat simultaneously, eah with a 50% share. This opens up new fields of application, either as a stand-alone system or combined with a gas engine cogeneration unit and absorber for cold generation. Two examples are presented, i.e. a hotel and a shopping mall. (orig.) [Deutsch] Direktbefeuerte Absorptionskaeltemaschinen erzeugen neuerdings nicht nur Kaelte, sondern auch Heizungswaerme mit 80 C Vorlauftemperatur. Sie koennen kuehlen, heizen oder - bis je 50% der Leistung - beides gleichzeitig. Der Teillastwirkungsgrad beim Kuehlbetrieb ist hoeher als bekannt. Das eroeffnet neue Moeglichkeiten des Einsatzes solcher Geraete, sei es allein oder zusammen mit Gasmotor-BHKW und Absorber zur Kaelteerzeugung. Zwei Beispiele - ein Hotel und ein Einkaufszentrum - werden vorgestellt. (orig.)
Gehmacher, Ernst
2003-01-01
'Der Begriff 'Sozialkapital' bezieht sich auf Formen gesellschaftlichen Zusammenhalts, die politischen, sozialen und wirtschaftlichen Nutzen bringen. Unter dem Eindruck, dass sich traditionelle Normen, Vertrauensverhältnisse und Bindungen auflösen und in Zukunft neue soziale Bindungen Bedeutung gewinnen werden, hat die OECD das Programm 'Measuring Social Capital' organisiert: bis 2004 sollen statistische Indikatoren und Survey-Fragen für vergleichende Studien entwickelt werden. Nach einem Übe...
Hirschman, Isidore Isaac
2014-01-01
This text for advanced undergraduate and graduate students presents a rigorous approach that also emphasizes applications. Encompassing more than the usual amount of material on the problems of computation with series, the treatment offers many applications, including those related to the theory of special functions. Numerous problems appear throughout the book.The first chapter introduces the elementary theory of infinite series, followed by a relatively complete exposition of the basic properties of Taylor series and Fourier series. Additional subjects include series of functions and the app
PERILAKU ENTREPRENEUR PENGRAJIN GULA KRISTAL DI WILAYAH PERDESAAN
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Sulistyani Budiningsih
2014-12-01
Full Text Available Objective of this research 1 knowing the characteristics of entrepreneurial actors crystal sugar producers, 2 to analyze the behavior of the entrepreneur craftsmen crystal sugar in the District Cilongok Banyumas.The location of research in Sub District Cilongok Banyumasset intentionally (purposive sampling with consideration of a center of crystal sugar. Source of research date in the form of primary and secondary date. Date was collected through interviews, observation and documentation. Date analysis with qualitative descriptive analysis techniques and quantitative analysis. To identify the characteristics of the entrepreneur farmers and craftsmen used descriptive method of analysis simple statistic. In studying the distribution of the factors that influence the behavior of the entrepreneur craftsmen crystal sugar quantitatively analyzed descriptively. Results The average number of coconut trees entrepreneurial ownership crystal sugar producers reached 23 trees with ownership system consists of one's own and lease tree from others. The results showed that there were 9 (22% of respondents who have their own trees and also hire other people's trees. While 31 (77% of respondents are craftsmen who rely on privately owned palm trees to be taken niranya. Formal education is the average respondent Graduated Elementary School: 29 respondents (72.5%, followed by junior high school graduated 10 respondents (25% and graduated from high school there is only one respondent (2.5%. Age of respondents actors Cilongok entrepreneur craftsmen in the district known that most or at (100.00 percent, including the productive age group with a mean age of 46.25 years. Productivity is still low, it can be seen from the average - average number of respondents production craftsmen new farmers can achieve a production of 4.69 kg per day and 140.66 kg per month. Experience crystal sugar craftsman entrepreneur vary, there are just starting a business that is less than 1 year and there are craftsmen who have more than 5 years in the business this long with an average of 3 years 6 months entrepreneurship.
Directory of Open Access Journals (Sweden)
Elena Gapova
2001-03-01
Full Text Available Die sowjetische Geschichte während der ersten drei Jahrzehnte der kommunistischen Herrschaft (bis zu Stalins Tod ist kein unbeschriebenes Blatt. Frauen erhielten während dieser Zeit mehr Aufmerksamkeit, als man meinen könnte; tatsächlich vollzogen sich damals weitreichende Veränderungen in den Geschlechterverhältnissen. Die vorliegenden Werke sehen diese Periode der 20er Jahre in ihrer überwiegenden Zahl als eine Zeit, in der sich revolutionäre Initiativen für Frauen vollzogen haben, auf die ein „großer Rückzug“ in den 30er Jahren bis zu der Zeit, in der Stalin an die Macht kam, folgte, in dem progressive Pläne von sozialkonservativen Kräften wieder unterdrückt wurden. Dieser Sicht wurde vor kurzem widersprochen und die These entgegengehalten, dass eine radikale Veränderung der Strategien nicht stattfand. Beide Auffassungen beschäftigen sich dabei mit der Frage „was die Bolschewiken nicht für die Frauen getan haben“. In jedem Fall aber bietet diese Zeit noch viel Raum für weitergehende Forschungen. Lynne Attwood, die vor kurzem Bücher mit den Titeln „Der neue sowjetische Mann und die neue sowjetische Frau: Geschlechtsrollenspezifische Sozialisation in der UdSSR“ und „Rote Frauen auf der Leinwand: Sowjetische Frauen und Kino während der kommunistischen Ära“ veröffentlicht hat, beschreibt als das Ziel ihrer neuen Studie „die Rolle zu erforschen, die die Frauenzeitschriften Rabotnytsa (Arbeiterin und Krestyanka (Bäuerin bei dem Versuch gespielt haben, die neue sowjetische Frau durch die Präsentation geeigneter Rollenvorbilder weiblicher Identität für ihre Leserinnen zu schaffen.Soviet history of the first three decades of communist rule (until Stalin’s death is not an unknown area in which the women received considerably less attention than one could have thought—in fact, grandiose transformations of gender relations were taking place during the time. The existing works largely interpret the period as
Advanced concept for a medium-voltage switch gear; Neues Konzept einer Mittelspannungsschaltanlage
Energy Technology Data Exchange (ETDEWEB)
Buescher, A.; Wahle, A. [Areva Energietechnik GmbH, Regensburg (Germany). Sachsenwerk Mittelspannung
2008-03-15
The new series GHA of medium-voltage switch gears have advantages due to sulfur hexafluorides avoidance during operation of the service life. An ergonomic display device enables simple handling and reliable switching processes. (GL)
Directory of Open Access Journals (Sweden)
Fabian Franke
2017-12-01
Full Text Available Das Framework for Information Literacy for Higher Education wurde im Januar 2016 vom Vorstand der Association of College & Research Libraries (ACRL beschlossen. Es beruht auf der Idee von „Threshold Concepts“ und sieht Informationskompetenz in einem engen Zusammenhang mit Wissenschaft und Forschung. Dadurch legt es bei der Vermittlung von Informationskompetenz eine starke Betonung auf das „Warum“, nicht nur auf das „Was“. Der Ansatz des Framework wird vielfach kontrovers diskutiert. Bietet er tatsächlich eine neue Sichtweise auf die Förderung von Informationskompetenz oder ist er überwiegend alter Wein in neuen Schläuchen? Kann das Framework neue Impulse für die Aktivitäten an den Bibliotheken in Deutschland setzen oder beschreibt es etwas, was wir längst machen? Der Beitrag versucht, Anregungen zu geben, welche Konsequenzen das Framework für unsere Kurse haben kann und welche veränderten Lernziele mit ihm verbunden sein können. Dabei plädiert er für ein umfassendes Verständnis von Informationskompetenz, das sich nicht auf Einzelaspekte wie Recherchekompetenz beschränkt. The Framework for Information Literacy for Higher Education was adopted by the Board of the Association of College & Research Libraries (ACRL in January 2017. It is based on the idea of threshold concepts and connects information literacy, research and scholarship. Therefore it focuses primarily on the “Why”, not only on the “What”. The approach of the Framework has often been controversially discussed. Does it actually provide a new perspective on the promotion of information literacy? Can the Framework provide new impetus for the activities of the German libraries, or does it describe something we are already doing? The paper tries to give suggestions how the framework may help to improve our courses. The author argues for a comprehensive understanding of information literacy, which is not limited to individual aspects such as research
U.S. Department of Health & Human Services — The Centers for Medicare and Medicaid Services (CMS) offers several different Chart Series with data on beneficiary health status, spending, operations, and quality...
Directory of Open Access Journals (Sweden)
Anna-Maria Kamin
2011-10-01
Full Text Available Das Internet bietet Lernenden vielfältige Möglichkeiten zur Wissensorganisation und -kommunikation in formalen und informellen Bildungskontexten. Bislang nutzen selbst bildungsaffine erwachsene Lerner diese unterstützenden Potenziale des Internets vielfach nur zurückhaltend. Dieser zögerliche Gebrauch zeigt sich auch dann, wenn die Implementierung virtuell vernetzter Applikationen in der Planung von den Lernenden von den Akteuren prinzipiell gefordert und begrüsst wird. Im Zentrum unseres Beitrags stehen mögliche Gründe und Bedingungen für diese vermeintlichen Widerstände und Problematiken bei der Integration des Partizipationsraums Internet für berufliche Lernprozesse. Grundlage für die Diskussion sind die Praxiserfahrungen und empirischen Ergebnisse einer explorativen Fallstudie mit einem ethisch beratenden Gremium. Die bisherige Bilanz des Projektvorhabens unterstreicht die Notwendigkeit, in diesem Kontext theoretische Konzepte zu Lernwiderständen, generationsspezifischen Aspekten, zur Mediendidaktik und zu Lerngewohnheiten und Transfer zu diskutieren. Die Ergebnisse belegen, dass digitale Lern- und Arbeitsformen unmittelbar an eingeschliffene Lernroutinen gebunden sind. Lernende benötigen Zeit, Raum, Anlässe und Struktur, um Handlungs- und Lernroutinen aufzubrechen und neue zu entwickeln. Nur so können digitale Partizipationsmöglichkeiten erfolgreich in den Arbeitsalltag integriert werden.
Directory of Open Access Journals (Sweden)
Jan Wesbuer
2005-01-01
Full Text Available Die digitale Bildbearbeitung und die digitale Photogrammetrie haben in den letzten Jahren, neben vielen anderen Gebieten, die Dokumentation von Ausgrabungsstätten beeinflusst. Die Photogrammetrie hat ihren Ursprung in der Vermessungskunde. Sie wird heutzutage in vielen Bereichen der Ingenieurwissenschaften eingesetzt und hat somit viele Schnittbereiche zu angrenzenden wissenschaftlichen Gebieten. In der Archäologie hat sie daher die Möglichkeit, in vielen Bereichen die herkömmliche Geodäsie zu erweitern bzw. neue Möglichkeiten der Visualisierung zu schaffen oder bei der Bildauswertung zu helfen.Durch die Bildbearbeitung ist es heutzutage möglich, schnell und vor Ort die Dokumentation vorzunehmen. Mit ihrer Hilfe können z.B. nicht orthogonale Aufnahmen perspektivisch entzerrt werden, so dass in ihnen wieder gemessen werden kann.Der Artikel unterteilt sich in 3 Bereiche:• als erstes werden die Möglichkeiten der digitalen Bildbearbeitung bzw. Auswertung von Photos dargestellt.• danach wird auf die photogrammetrische Auswertung und Vermessung von Ausgrabungsstätten eingegangen. • und zuletzt werden einige Visualisierungsmöglichkeiten gezeigt, die mit Hilfe der photogrammetrischen Auswertung und 3DModellerstellung realisiert werden können.
Energy Technology Data Exchange (ETDEWEB)
NONE
2001-07-01
The number of jobs in the field of renewable energy sources is disproportionately high as compared to conventional energy sources. For example, the German wind industry has 30,000 jobs for a 3% share in power supply. According to the White Book on Renewable Energy Sources of the European Commission, the share of renewable energy sources is to be increased to 12% by 2010. This will mean 1.2 million new jobs. If the share is increased to 20%, 2 million new jobs will be created in the European Union according to an EUROSOLAR study. [German] Die erneuerbaren Energien haben im Verhaeltnis zu konventionellen Energietraegern ein ueberproportional hohes Arbeitsplatzangebot. So sind bereits heute in der deutschen Windenergiebranche, die zur Zeit etwa 3 Prozent des Stromverbrauchs deckt, 30000 Menschen beschaeftigt. Das Weissbuch der Europaeischen Kommission ueber erneuerbare Energien hat das Ziel formuliert, den Anteil der erneuerbaren Energien bis zum Jahr 2010 auf 12 Prozent zu steigern. Die Europaeische Kommission sieht damit die Schaffung von 1,2 Millionen Arbeitsplaetzen verbunden. Wenn der Anteil der erneuerbaren Energien in der Europaeischen Union auf 20 Prozent erhoeht wird, werden gemaess einer EUROSOLAR - Studie in der EU sogar 2 Millionen neue Arbeitsplaetze entstehen. (orig.)
African Journals Online (AJOL)
calciphylaxis is prevention through rigorous control of phosphate and calcium balance. We here present two ... The authors declared no conflict of interest. Introduction. Calciphylaxis is a rare but serious disorder .... were reported to resolve the calciphylaxis lesions in a chronic renal failure patient [20]. In a series of five.
Indian Academy of Sciences (India)
polynomials are dense in the class of continuous functions! The body of literature dealing with Fourier series has reached epic proportions over the last two centuries. We have only given the readers an outline of the topic in this article. For the full length episode we refer the reader to the monumental treatise of. A Zygmund.
African Journals Online (AJOL)
abp
13 oct. 2017 ... This is an Open Access article distributed under the terms of the Creative Commons Attribution ... Bifocal leg fractures pose many challenges for the surgeon due to .... Dans notre serie, le taux d'infection est reste dans un.
Indian Academy of Sciences (India)
The theory of Fourier series deals with periodic functions. By a periodic ..... including Dirichlet, Riemann and Cantor occupied themselves with the problem of ... to converge only on a set which is negligible in a certain sense (Le. of measure ...
African Journals Online (AJOL)
Administrator
Key words: Case report, case series, concept analysis, research design. African Health Sciences 2012; (4): 557 - 562 http://dx.doi.org/10.4314/ahs.v12i4.25. PO Box 17666 .... According to the latest version of the Dictionary of. Epidemiology ...
Stimson, Blake
2011-01-01
Reaktion Books’ Exposures series, edited by Peter Hamilton and Mark Haworth-Booth, is comprised of 13 volumes and counting, each less than 200 pages with 80 high-quality illustrations in color and black and white. Currently available titles include Photography and Australia, Photography and Spirit, Photography and Cinema, Photography and Literature, Photography and Flight, Photography and Egypt, Photography and Science, Photography and Africa, Photography and Italy, Photography and the USA, P...
Energy Technology Data Exchange (ETDEWEB)
Anon.
2000-11-01
The Fraunhofer-Institut fuer Solare Energiesysteme at Freiburg, Germany, claims a 'best ever' efficiency of a monolithic tandem concentrator solar cell with a sandwich structure based on gallium-indium arsenide and gallium-indium phosphide. The new solar cell can be produced in a single process based on an Aixtron AG (Aachen, Germany) separator which is also used for industrial production of solar cells for aerospace applications. [German] Das Fraunhofer-Institut fuer Solare Energiesysteme in Freiburg hat einen neuen Wirkungsgradrekord fuer monolithische Tandem-Konzentratorsolarzellen gemeldet. Die Wissenschaftler am Fraunhofer-Institut fuer Solare Energiesysteme (Fraunhofer ISE) haben neue Schichtstrukturen auf der Basis von Gallium-Indium-Arsenid und Gallium-Inidum-Phosphid entwickelt. Die neue Solarzelle kann in einem einzigen Prozess hergestellt werden. Fuer diesen Prozess setzen die Freiburger Solarzellenforscher eine Abscheideanlage der Firma Aixtron AG aus Aachen ein, wie sie auch in der Industrie zur Herstellung von Solarzellen fuer Anwendungen im Weltraum genutzt wird. (orig.)
Directory of Open Access Journals (Sweden)
Reinhold Scholl
2016-08-01
Full Text Available The „multilingual online dictionary of the technical administrative language of Greek, Roman and Byzantine Egypt“ (in short „neues Fachwörterbuch“ replaces, updates and extends its known predecessor, Friedrich Preisigke`s „Fachwörter des öffentlichen Verwaltungsdienstes Ägyptens: in den griechischen Papyrusurkunden der ptolemäisch-römischen Zeit“ which was published more than 100 years ago, in 1915. It offers not only a display of the lemmata with spelling variants and translations into the present academic languages German, English, French, Italian and Spanish, but also, among other features, a full-text search and the possibility to arrange the lemmata individually according to their respective subjects as well as sorting the search results according to different aspects. The „neues Fachwörterbuch“ indicates and links to their full-texts at www.papyri.info which represent the earliest and the latest record of a word‘s meaning; apart from that it provides bibliographical references and offers further information and links concerning the word and its meaning(s. In this paper we want to introduce the new Fachwörterbuch and explain the main features of the website.
The new BMW four-cylinder four-valve engine. Der neue BMW-Vierzylinder-Vierventilmotor
Energy Technology Data Exchange (ETDEWEB)
Bender, K.H.; Ederer, G.; Frerk, J.; Kramer, F.
1989-09-01
BMW offers with the 318is a new sporty 3 series model since September 1989. This new BMW is equipped with a new 1.8-l-four-valve engine, which had been developed on the basis of the 1.8-l-two-valve engine. Technical features are two overhead camshafts driven by a duplex chain drive, bucket tappet control with integrated hydraulic valve clearance compensation and a distributorless direct fire ignition system. In addition to the increase of the maximum output to 100 kW the advantages of the four-valve-technique have been used to achieve a remarkable low end troque characteristic. The maximum bmep of 1.2 kJ/dm{sup 3} (corresponds to172 Nm) at an engine speed of 4600 rpm is a notable level for a catalitic converter model. Extraordinary development work in the lay out of mixture preparation, combustion process and exhaust gas treatment in general resulted in more favourable emissions and fuel consumption figures compared with two valve engines. (orig.).
The new 6 MW industrial gas turbine from MAN; Die neue 6 MW Industriegasturbine von MAN
Energy Technology Data Exchange (ETDEWEB)
Beukenberg, M.; Wiedermann, A.; Orth, U.; Aschenbruck, E.; Reiss, F. [MAN Diesel und Turbo SE, Oberhausen (Germany)
2010-07-01
The development of a completely new series of gas turbines requires significant capital, resources and know-how. MAN Diesel and Turbo strategically decided to create a small gas turbine in the 6 MW-class. The construction of the Gas Turbine has been on the basis of opportunities in current and future markets and the positioning of the competition, this has determined the characteristics and technical parameters which have been optimised in the 6 MW design. The construction uses extremely high precision engineering so that the assembly of sub-components to modules is a smooth flowing process and can guarantee the high standards both quality and performance which MAN Diesel and Turbo are operating to. The individual components must be tested and thoroughly validated many months before actual assembly of the first machine. These include in particular the compressor of the gas turbine and the combustion chamber. The combustion system required special attention, since the emissions are strongly focused to satisfy stringent environmental requirements. The planned tests are a prerequisite for the construction of such a prototype and must be successfully completed before the Gas Turbine will be accepted into service. (orig.)
Vetrayan, Jayachandran; Othman, Suhana; Victor Paulraj, Smily Jesu Priya
2017-01-01
To assess the effectiveness and feasibility of behavioral sleep intervention for medicated children with ADHD. Six medicated children (five boys, one girl; aged 6-12 years) with ADHD participated in a 4-week sleep intervention program. The main behavioral strategies used were Faded Bedtime With Response Cost (FBRC) and positive reinforcement. Within a case-series design, objective measure (Sleep Disturbance Scale for Children [SDSC]) and subjective measure (sleep diaries) were used to record changes in children's sleep. For all six children, significant decrease was found in the severity of children's sleep problems (based on SDSC data). Bedtime resistance and mean sleep onset latency were reduced following the 4-week intervention program according to sleep diaries data. Gains were generally maintained at the follow-up. Parents perceived the intervention as being helpful. Based on the initial data, this intervention shows promise as an effective and feasible treatment.
Energy Technology Data Exchange (ETDEWEB)
Fischer, D.M.; Thern, H.F.; Kruspe, T.; Blanz, M. [Baker Hughes INTEQ GmbH, Celle (Germany); Strobel, J. [RWE Dea AG, Hamburg (Germany)
2003-07-01
Vibrationseinfluesse auf das Messsignal verringern. Ausserdem stellen wir ein neues LWD-MR-Messgeraet vor, MagTrak{sup TM}, das die Qualitaet und Vorteile von kabelgefuehrten MR-T{sub 2}-Messungen mit einem Minimum von Vibrationseffekten verbindet. Dies wird mit MR-Daten von einem Einsatz in einer kommerziellen Bohrung belegt. (orig.)
Directory of Open Access Journals (Sweden)
Philip Stearns
2011-06-01
Full Text Available Photo essay. A collection of Images produced by intentionally corrupting the circuitry of a Kodak DC280 2 MP digitalcamera. By rewiring the electronics of a digital camera, glitched images are produced in a manner that parallels chemically processing unexposed film or photographic paper to produce photographic images without exposure to light. The DCP Series of Digital Images are direct visualizations of data generated by a digital camera as it takes a picture. Electronic processes associated with the normal operations of the camera, which are usually taken for granted, are revealed through an act of intervention. The camera is turned insideout through complexes of shortcircuits, selected by the artist, transforming the camera from a picture taking device to a data capturing device that renders raw data (electronic signals as images. In essence, these images are snapshots of electronic signals dancing through the camera's circuits, manually rerouted, written directly to the onboard memory device. Rather than seeing images of the world through a lens, we catch a glimpse of what the camera sees when it is forced to peer inside its own mind.
Energy Technology Data Exchange (ETDEWEB)
Hinsch, C.
1999-08-01
During the first half of 1999, installers of wind energy systems erected more than 600 wind turbines in all parts of Germany with a total capacity of approximately 515 megawatts. The upward trend of the last years is thus continuing. It shows in the employment sector, too: manufacturers alone created more than 500 new jobs during the first half year. A mid-term valuation is given. (orig.) [German] Im ersten Halbjahr 1999 errichteten die Windkraft-Monteure bundesweit ueber 600 Windturbinen mit einer Gesamtleistung von rund 515 Megawatt. Damit setzt sich der Aufschwung der letzten Jahre fort. Das zeigt sich auch bei der Beschaeftigung: Allein die Hersteller stellten im ersten Halbjahr ueber 500 neue Mitarbeiter ein. Eine Halbzeitbilanz wird praesentiert. (orig.)
Directory of Open Access Journals (Sweden)
Caterina Cardemone
2016-06-01
Full Text Available The paper focuses on Josef Frank’s convinced use of historiographical arguments in his sharp critique of German modernist architecture. Frank’s attention to architectural history dates back to his education at the Technische Hochschule in Vienna, with Carl König, and the writing of a doctoral thesis on Leon Battista Alberti’s religious buildings in 1910. If a profound knowledge of Alberti’s writings informs Frank’s entire theoretical work, the point discussed here is the parallel between Neues Bauen and Gothic traced by Frank to exclude Neues Bauen from a true modernity, based, on the opposite, on a classical tradition of thought. An attempt is made to reconstruct Frank’s historiographical references and to insert his work in the broader historiographical context, thus highlighting a close link between architectural theory and critique on the one hand and contemporary historiographical constructions on the other.
Energy Technology Data Exchange (ETDEWEB)
Muehlenweg, M. [Krankenhaus Martha-Maria Halle-Doelau, Institut fuer Radiologie, Halle (Saale) (Germany); Schaefers, G. [MR:comp GmbH, Gelsenkirchen (Germany); Trattnig, S. [Exzellenzzentrum Hochfeld-Magnetresonanz, Medizinische Universitaet Wien, Universitaetsklinik fuer Radiodiagnostik, Wien (Austria)
2015-08-15
Betriebsanleitung der MR-Scanner. Die verpflichtenden Inhalte der Betriebsanleitung werden in einer zentralen Norm der International Electrotechnical Commission (IEC) 60601-2-33 geregelt. In dieser Norm wurde juengst die Anwendung statischer Magnetfelder in der MRT bis zu 8 Tesla (T) in der klinischen Routine (kontrollierte Betriebsart 1. Stufe) zugelassen. Die ebenfalls notwendige CE-Zertifizierung der Ultrahochfeldscanner (7-8 T) in Europa ist fuer zukuenftige Geraete zu erwarten. Bestehende Installationen werden nicht automatisch zertifiziert, sondern behalten ihren experimentellen Status. Die aktuelle Erweiterung der IEC 60601-2-33 fuehrt eine neue Zusatzoption, die sog. ''fixed parameter option'' (FPO) ein. Diese Option kann zusaetzlich zu den etablierten Betriebsarten geschaltet werden und definiert eine fixe Geraetekonstellation und bestimmte Parameter des Energieoutputs von MR-Scannern, die zukuenftig die Untersuchungen von Implantatpatienten vereinfachen soll. Die Beschaeftigung schwangerer Mitarbeiterinnen in einer MRT-Einrichtung ist nach wie vor nicht allgemein in Europa geregelt. In Deutschland und Oesterreich wurden 2014 in Teilregionen Beschaeftigungsverbote fuer Schwangere und Stillende im der MR-Kontrollzone (0,5 mT) erteilt. Zugrunde liegt die meist ungeklaerte Frage der Anwendbarkeit von Grenzwerten fuer Beschaeftigte (Extremitaetenexposition fuer statische Magnetfelder bis 8 T erlaubt) oder der Grenzwerte fuer die Allgemeinbevoelkerung (maximal bis 400 mT). Das Verwerfen von Muttermilch nach i.v.-Gabe von gadoliniumhaltigen Kontrastmitteln bei einer stillenden Frau wird laut Gesellschaft fuer urogenitale Radiologie (ESUR) nur noch bei Gabe von Kontrastmitteln der Nephrogenic-systemic-fibrosis(NSF)-Hochrisikoklasse empfohlen. (orig.)
2001-01-01
Firma Antes plaatide seas "Eesti portreed. Werke für Flöte und Gitarre", "Kangro. Klavierkonzert Nr.2"; Deutsche Grammophon'i plaat "Steinberg dir, N. Järvi"; Globe plaat "Tanejev. The Twelve Choruses op. 27", dir. T. Kaljuste
Directory of Open Access Journals (Sweden)
Klaus Himpsl-Gutermann
2015-12-01
Full Text Available Durch die PädagogInnenbildung_NEU eröffnet sich derzeit die Chance, österreichweit in vier Verbundregionen in Kooperation zwischen Universitäten und Pädagogischen Hochschulen die Lehramtsausbildung für alle Schulstufen und Schultypen zukunftsweisend zu reformieren. Zu den Ansprüchen an das neue Studium gehört auch, dass es künftige LehrerInnen an die Schulen entsendet, die neben ihrer fachlichen Expertise mit aktuellen gesellschaftlichen Herausforderungen und Entwicklungen adäquat umgehen können. Die rasant voranschreitende Technologisierung und Digitalisierung unserer Gesellschaft gehört zweifelsohne zu diesen Herausforderungen. Die E-Learning-Strategiegruppe der österreichischen Pädagogischen Hochschulen (PHELS hat deshalb die aktuell vorliegenden Curricula und Curriculaentwürfe der Sekundarstufe Allgemeinbildung in den vier Verbundregionen einer kritischen Analyse hinsichtlich Medienbildung und digitaler Kompetenzen unterzogen − mit einem ernüchternden bis verheerenden Ergebnis: Es scheint nicht nur die historische Chance vertan, Medienbildung systematisch in der LehrerInnenausbildung und damit in den Schulen zu verankern, sondern durch die fehlende informatische Grundbildung laufen künftige Generationen auch Gefahr, auf zunehmend digitalisierten Arbeitsmärkten den internationalen Anschluss zu verlieren.
Energy Technology Data Exchange (ETDEWEB)
Paul, J. [Mercedes-Benz AG, Stuttgart (Germany); Klinkner, W. [Mercedes-Benz AG, Stuttgart (Germany); Mueller, A. [Mercedes-Benz AG, Stuttgart (Germany)
1995-12-31
The new electronic stability program (ESP) offered by Mercedes-Benz as a world novelty in March 1995 is the consequent further development of the anti-lock braking system and the anti-slip control. An improved assessment of the handling properties by a steering wheel sensor, a yaw velocity sensor, a brake pressure sensor and a hydraulic system that brakes each wheel individually and is controlled by a complex logic allow the supervision and the active control of the cross-dynamic handling properties up to limiting ranges. The handling of the vehicle in critical situations (e.g. strong oversteering or understeering) has been considerably improved. (orig.) [Deutsch] Das neue elektronische-Stabilitaets-Programm (ESP), von Mercedes-Benz ab Maerz 1995 als Weltneuheit angeboten, stellt eine konsequente Weiterentwicklung des Antiblockier-Bremssystems (ABS) und der Antriebsschlupfregelung (ASR) dar. Eine erweiterte Fahrzustandserfassung durch Lenkradwinkel-, Giergeschwindigkeit- und Bremsdrucksensor, eine Hydraulik, die jedes Rad individuell abbremsen kann, angesteuert durch eine komplexe Regelungslogik, erlauben erstmals eine Ueberwachung und aktive Regelung des querdynamischen Fahrzustands bis in den Grenzbereich. Die Beherrschbarkeit des Fahrzeugs wird in kritischen Situationen (z.B. starkes Ueber- oder Untersteuern) entscheidend verbessert. (orig.)
Directory of Open Access Journals (Sweden)
Gravenor Natalie
2017-12-01
Full Text Available Active since 1980, the multidisciplinary Slovenian art collective Neue Slowenische Kunst (NSK, New Slovenian Art and its branches, the fine arts group IRWIN, industrial music band Laibach and theatre troupe Gledališče Sester Scipion Nasice (The Scipion Nasice Sisters Theatre, have seen their works widely and often controversially discussed, most often in the context of subversion and over affirmation of totalitarian imagery, as well as the contemporary nation-state and nationalism. Gender, as another often essentialist category, has not figured prominently in the analysis of NSK’s output and impact. This paper proposes some areas (participation, representation for investigation, as well as points of departure for a theoretical framework starting with key texts on gender by Judith Butler and R. W. Connell to analyse the moving images, performing and fine art produced within NSK in terms of the role gender plays therein, as well as its relationship to the construction of other defining categories such as nation and class.
Jolley, LB W
2004-01-01
Over 1,100 common series, all grouped for easy reference. Arranged by category, these series include arithmetical and geometrical progressions, powers and products of natural numbers, figurate and polygonal numbers, inverse natural numbers, exponential and logarithmic series, binomials, simple inverse products, factorials, trigonometrical and hyperbolic expansions, and additional series. 1961 edition.
New off-road engines for TIER 4 final; Neue Offroad-Motoren fuer Tier 4 final
Energy Technology Data Exchange (ETDEWEB)
Adt, Hans-Ulrich; Lehmann, Henrik [MTU Friedrichshafen GmbH, Friedrichshafen (Germany); Herter, Yvonne; Weidler, Alexander [Daimler AG, Stuttgart (Germany). Baureihe 1000
2013-03-15
To meet the off-road emission standards EU IV and EPA Tier 4 final, as of 2014 the Tognum Group will be offering newly developed engines of the Series 1000 to 1500. These MTU brand diesel engines deliver outputs ranging from 100 to 460 kW and are designed to power agricultural and forestry machinery and construction as well as special-purpose machinery. (orig.)
Geometric Series via Probability
Tesman, Barry
2012-01-01
Infinite series is a challenging topic in the undergraduate mathematics curriculum for many students. In fact, there is a vast literature in mathematics education research on convergence issues. One of the most important types of infinite series is the geometric series. Their beauty lies in the fact that they can be evaluated explicitly and that…
Indian Academy of Sciences (India)
2016-08-26
Aug 26, 2016 ... http://www.ias.ac.in/article/fulltext/pmsc/115/04/0371-0381. Keywords. Inverse binomial series; hypergeometric series; polylogarithms; integral representations. Abstract. In this paper we investigate the series ∑ k = 1 ∞ ( 3 k k ) − 1 k − n x k . Obtaining some integral representations of them, we evaluated the ...
Bauernhansl, Thomas
2015-01-01
Der Vortrag "Industrie 4.0 - Chancen für neue Geschäftsmodelle und für die digitale Veredelung von Dienstleistungen" behandelt folgende Themenkomplexe: - Internationaler Vergleich - Der Wettlauf hat begonnen - Smart Factory - Konzept und Potenziale - Industrie 4.0 - Disruptive Geschäftsmodelle
Energy Technology Data Exchange (ETDEWEB)
Bergins, C; Berger, S; Strauss, K [Dortmund Univ. (Germany); Elsen, R O [RWE Energie, Essen (Germany); Erken, M [Rheinbraun AG, Koeln (Germany); Bielfeldt, F B [Dieffenbacher, Eppingen (Germany)
1998-09-01
In order to keep German brown coal competitive, new technologies for enhanced efficiency of power generation from brown coal were developed in the past few years. At a water content of 50-60 percent by weight, much energy is lost for evaporation. Reduction of the water content will incur a 5 percent effiency enhancement. A new process was developed at Dortmund university, i.e. mechanical/thermal dehydration in which the water contained in brown coal is removed by heat and mechanical pressure. The process is described, and its applicability for other moist fuels, e.g. peat or waste from the paper and wood processing industry ist discussed. (orig./SR) [Deutsch] Damit Braunkohle in Deutschland als heimischer und subventionsfreier Energietraeger diesen Stellenwert behaupten und in Zukunft weiter ausbauen kann, wurde in den letzten Jahren verstaerkt die Entwicklung neuer Technologien zur Effizienzsteigerung der Braunkohleverstromung vorangetrieben. Bei der Verbrennung von Braunkohlen mit Wassergehalten von 50-60 Gew.-% ist in herkoemmlichen Kraftwerken ein erheblicher Teil des Energieinhaltes zur Verdampfung des Wassers mit Hilfe von heissen Rauchgasen in sogenannten Mahltrockungsanlagen erforderlich. Durch eine energetisch guenstige Reduzierung des Wassergehaltes vor der Verbrennung sind hier Wirkungsgradsteigerungen um bis zu 5 Prozentpunkte moeglich. Ein neues, fuer diese Aufgabenstellung einsetzbares Verfahren ist das am Lehrstuhl Energieprozesstechnik und Stroemungsmechanik der Universitaet Dortmund entwickelte Mechanisch/Thermische Entwaesserungsverfahren (MTE-Verfahren). Durch die kombinierte Anwendung von Waerme und mechanischem Druck laesst sich das in der Kohle enthaltene Wasser in fluessiger Form entfernen. Neben der Darstellung des MTE-Verfahrens am Beispiel von Braunkohle soll im folgenden auch auf die Moeglichkeiten der Anwendung des Verfahrens fuer andere feuchte Brennstoffe wie Torf und Abfaelle aus der Papier- und Holzverarbeitung eingegangen werden
Energy Technology Data Exchange (ETDEWEB)
Schaefer, C. (comp.)
2000-07-01
The titles of the seven papers presented at the IKU seminar are as follows: 1. The emerging competitive electricity markets - Perspectives for municipalities. - 2. New supply offers and terms and conditions for power procurement of municipalities. - 3. Power procurement and awarding of contracts - legal framework and recommendations for municipalities in designing the tendering procedure in the competitive market environment. - 4. Experience of a municipality in the process of establishing a local pool of buyers. - 5. Experience obtained in defining new tender conditions and specifications for power supply to a municipal undertaking. - 6. Experience of a municipality obtained in negotiations with electricity supply undertakings. - 7. Invitations to tender for energy supply to municipalities - experience of the hessenENERGIE GmbH. (orig./CB) [German] Die Titel der in diesem Dokument abgedruckten sieben Beitraege zum IKU Seminar lauten: 1. Wettbewerb auf den Strommaerkten - Perspektiven fuer Kommunen. - 2. Neue Angebote und neue Konditionen fuer den Strombezug von Kommunen. - 3. Strombezug und Vergaberecht - Rechtlicher Rahmen und Empfehlungen zur Gestaltung der Vergabe bei oeffentlichen Auftraggebern. - 4. Erfahrungen mit der Bildung eines kommunalen Nachfragepools. - 5. Erfahrungen mit der Ausschreibung von Stromlieferungen fuer einen oeffentlichen Auftraggeber. - 6. Erfahrungen einer Kommune aus Verhandlungen ueber den Strombezug mit Versorgungsunternehmen. - 7. Ausschreibung von Energielieferungen fuer Kommunen - Erfahrungen und Angebote der hessenENERGIE GmbH. (orig./CB)
Energy Technology Data Exchange (ETDEWEB)
NONE
1996-12-31
The THERMIE programme deals, inter alia, with rational energy use in the transport sector. This volume contains the lectures given at the seminar ``Mobility and society``. Apart from the plenary sessions, task force meetings on the following subjects were held: conscious mobility; corporate management of transport to and from work; status and perspectives of central mobility agencies; new forms of mobility: the part played by public transport services; complementary service forms in public transport; car-sharing: experiences and perspectives; mobility as a political task and new services towards mobility. Separate records are available for 15 contributions. (BWI) [Deutsch] Im Rahmen des THERMIE-Programmes wird auch die rationelle Energieverwendung im Verkehrswesen behandelt. Der vorliegende Band druckt die Vortraege des Seminars zum Mobilitaet und Gesellschaft ab. Neben den Plenarsitzungen wurden Arbeitsgruppen zu folgenden Themen durchgefuehrt: Bewusste Mobilitaet; Betriebsmanagement fuer den Berufsverkehr; Status und Perspektiven von Mobilitaetszentralen; neue Formen der Mobilitaet: Die Rolle der Verkehrsbetriebe; ergaenzende Bedienungsformen im OePNV; Car-Sharing: Erfahrungen und Perspektiven; Politik und neue Dienstleistungen in Sachen Mobilitaet. Fuer 15 Beitraege wurde eine gesonderte inhaltliche Erschliessung durchgefuehrt. (BWI)
Energy Technology Data Exchange (ETDEWEB)
Hoefler, Werner; Niklass, Ralf [Bombardier Transportation GmbH, Hennigsdorf (Germany)
2013-04-01
The Bombardier Zefiro 380 comprehensively redefines very high speed (VHS) travel by harmonizing the often-conflicting demands of economy and ecology. In China's visionary development of a national very high speed rail system, the Zefiro 380 train plays a key role: 70 of these train sets were ordered by the Ministry of Railways in September 2009. The world's fastest series-production train is also the world's most eco-friendly and one of the most economical VHS trains. Bombardier's energy-saving EC04 technologies and an advanced aerodynamic design that benefits from Bombardier's aviation know-how ensure that the Zefiro 380 train runs with an unprecedented degree of energy efficiency.
Energy Technology Data Exchange (ETDEWEB)
Eckhoff, Stephan; Hoyer, Ruediger; Adam, Frank; Lammarck, Christian; Mueller, Wilfried [Umicore AG und Co. KG, Hanau-Wolfgang (Germany)
2010-07-01
Stratified gasoline direct injection engines show a great potential for the reduction of CO{sub 2} emissions and therefore improved fuel economy. The next generation of stratified gasoline engines with turbo charger and more efficient combustion are expected to have even lower exhaust temperatures compared with current series vehicle with stratified combustion. For this reason exhaust gas aftertreatment systems are required which have low light off temperatures for HC and CO during lean combustion and a high NOx-storage efficiency at low temperatures. This study shows the great improvements made over the last years for the development of new TWC and NOx-storage catalysts for the aftertreatment for lean GDI. A precious metal related cost reduction of about 40% was achieved for the new generation of aftertreatment systems. (orig.)
Environment-friendliness of the new 3 series; Umweltvertraeglichkeit der neuen 3er Baureihe
Energy Technology Data Exchange (ETDEWEB)
Franze, H.; Graser, K.
1998-05-01
BMW has developed new instruments to make lasting improvements to the environment-friendliness of vehicles and components throughout their entire life cycle (ATZ 97 (1995)). The new products are of particular ecological and economical value in the product development process where the most important requirements, e.g. recycling quota, are implemented in specific components. The main criteria for the classification of automobile environment-friendliness are resource efficiency, recycling, use of materials/composition and emissions/BMW`s standard proposal for automobile environment-friendliness. Below are examples of just some of the innovations employed in the new BMW 3 Series with regard to environmental conservation. (orig.) [Deutsch] Zur nachhaltigen Verbesserung der Umweltvertraeglichkeit von Automobilen und Bauteilen im gesamten Produkt-Lebenszyklus hat BMW neue Instrumente entwickelt. Sie dienen insbesondere zur oekologisch-oekonomischen Bewertung im Produktentwicklungsprozess. In diesem werden die uebergeordneten Anforderungen, zum Beispiel die Recyclingquote, bauteilspezifisch umgesetzt. Die Hauptkriterien zur Klassifizierung der Automobil-Umweltvertraeglichkeit sind Ressourceneffizienz, wirtschaftliche Wiederverwertung (Recycling), Materialeinsatz/Inhaltsstoffe und Emissionen. In diesem Aufsatz sind fuer den neuen 3er BMW beispielhaft einige Innovationen bezueglich Umweltvertraeglichkeit erlaeutert. (orig.)
Series Transmission Line Transformer
Buckles, Robert A.; Booth, Rex; Yen, Boris T.
2004-06-29
A series transmission line transformer is set forth which includes two or more of impedance matched sets of at least two transmissions lines such as shielded cables, connected in parallel at one end ans series at the other in a cascading fashion. The cables are wound about a magnetic core. The series transmission line transformer (STLT) which can provide for higher impedance ratios and bandwidths, which is scalable, and which is of simpler design and construction.
Series expansions without diagrams
International Nuclear Information System (INIS)
Bhanot, G.; Creutz, M.; Horvath, I.; Lacki, J.; Weckel, J.
1994-01-01
We discuss the use of recursive enumeration schemes to obtain low- and high-temperature series expansions for discrete statistical systems. Using linear combinations of generalized helical lattices, the method is competitive with diagrammatic approaches and is easily generalizable. We illustrate the approach using Ising and Potts models. We present low-temperature series results in up to five dimensions and high-temperature series in three dimensions. The method is general and can be applied to any discrete model
The new S-Class by Mercedes-Benz; Die neue S-Klasse von Mercedes-Benz
Energy Technology Data Exchange (ETDEWEB)
Basshuysen, R. van (ed.)
2005-10-01
The progress we have made with the new top-of-the-line Mercedes started from a high baseline. Around a dozen technical innovations are used in series production for the first time in the new S-Class - from the Brake Assist Plus with radar sensors to the seat with extended massage function, from the Night View Assist with modern infrared technology to the advanced Comand system, from the preventive Pre-Safe occupant protection with additional functions to the Park Assist. Safety and comfort were the main areas where we wanted to achieve further outstanding results. We have gone way beyond this goal. The new S-Class also fulfills its role as a trendsetter for passenger car development in other disciplines. It is the first car in the world with an official environmental certificate, and again sets records for exhaust emissions, fuel consumption and conservation of resources; it attains an even higher power output and torque level with newly developed engines and, with an improved Airmatic chassis, provides significant gains in terms of dynamic handling and driving pleasure, making every kilometer an experience. Bound by tradition - the new S-Class fulfills this commitment and continues a glittering chapter of German automobile tradition on the basis of experience and innovation. (orig.)
Directory of Open Access Journals (Sweden)
Frank Seeliger
2015-11-01
Full Text Available Das Mantra der Kundenorientierung, Serviceentwicklung und die Verpflichtung zur Effektivität wie Effizienz bei der Bewältigung aller Geschäftsgänge sind mittlerweile Allgemeinplätze. Es verpflichtet Informationseinrichtungen, den aktuellen Entwicklungen und der Zeit auf den Fersen zu bleiben. Was bedeutet dies auf der alltäglich pragmatischen Ebene für eine überschaubare Fachhochschulbibliothek? Eine, die mit wenigen Ressourcen ausgestattet als Showcase, repräsentativer Raum, Boutique sich gut „verkaufen“ muss, um en vogue oder einfach nur relevant und interessant für Stakeholder, Nutzer sowie Mitarbeiter zu bleiben? Auf dem Campus der berlinnahen Informationseinrichtung wird seit dem Neubezug einer denkmalgeschützten Verladehalle 2007 versucht, dem gewinnenden Charme und anmutigen Ambiente des Porticus auch eine herausragende Rolle als Innovations-Hub für die Hochschule und Bibliotheken im Allgmeinen über gelebte neue Ideen abzugewinnen. Sie betreffen sowohl technische Lösungen in Bezug auf RFID, Visualisierung, Automatisierung und Software, aber auch Formate für Veranstaltungen und Weiterbildung. Was ist aber hierfür nötig, um das Neue, gekauft oder selbst gezimmert, immer wieder einfliessen zu lassen und sich mit dem Profil der tatkräftigen und kreativen Avantgarde zu identifizieren? Der Beitrag wird versuchen, das Umfeld dafür zu beleuchten, um Innovationen als selbstverständliche Erwartungshaltung reifen zu lassen. Der deskriptive Ansatz soll nach keineswegs vollständiger Reflexion eigener Bemühungen prima facie Anregung geben dazu, wie im öffentlichen Dienst und ohne direkte Tuchfühlung zu „schwarzen Zahlen“ eine Firmenkultur Einzug halten kann, die bei entsprechender Erwartungshaltung das Unvorhersehbare für sich höher einschätzt als das Vertraute. Es ist ein Plädoyer für das offene System, ein Hoch auf Veränderung und Neues, ohne damit in eine willkürliche Vielfalt zu geraten. Warum kann das
Fourier Series Optimization Opportunity
Winkel, Brian
2008-01-01
This note discusses the introduction of Fourier series as an immediate application of optimization of a function of more than one variable. Specifically, it is shown how the study of Fourier series can be motivated to enrich a multivariable calculus class. This is done through discovery learning and use of technology wherein students build the…
Visualizing the Geometric Series.
Bennett, Albert B., Jr.
1989-01-01
Mathematical proofs often leave students unconvinced or without understanding of what has been proved, because they provide no visual-geometric representation. Presented are geometric models for the finite geometric series when r is a whole number, and the infinite geometric series when r is the reciprocal of a whole number. (MNS)
Upper Gastrointestinal (GI) Series
... standard barium upper GI series, which uses only barium a double-contrast upper GI series, which uses both air and ... evenly coat your upper GI tract with the barium. If you are having a double-contrast study, you will swallow gas-forming crystals that ...
Energy Technology Data Exchange (ETDEWEB)
Kaps, Charlotte; Soelter, Barbara; Steege, Andreas [Deutsche Gesellschaft fuer Zerstoerungsfreie Pruefung e.V., Berlin (Germany)
2017-08-01
The European Directive 2013/59 / Euratom (Euratom Directive) requires the Federal Government, pursuant to Article 106 of this Directive, to transpose the content of the directive into national law by 6 February 2018. The aim of the Federal Ministry for the Environment, Nature Conservation, Construction and Reactor Safety (BMUB) is, in addition to the implementation of the directive, to simultaneously make use of the possibility to modernize, improve and make more effective the radiation protection law. Directive 2013/59 / EURATOM will be incorporated into German law by the new Radiological Protection Act (StrlSchG) and other regulations on the level of an ordinance. The Radiological Protection Act, the Radiation Protection Ordinance and the X-ray Ordinance will be replaced by the StrlSchG. It is interesting to see the year 2017 under the point of view that the regulations at the level of regulation need to be elaborated. In particular, since the separation in radiation protection and X-ray regulation is not continued. Users could also experience this time pressure in 2018 when, in addition to the Radiation Protection Act, a large number of ordinances become legally binding. [German] Durch die europaeische Richtlinie 2013/59/EURATOM (Euratom-Richtlinie) ist die Bundesregierung gemaess Artikel 106 dieser Richtlinie verpflichtet, die inhaltlichen Vorgaben bis 6. Februar 2018 in nationales Recht umzusetzen. Das Ziel des Bundesministeriums fuer Umwelt, Naturschutz, Bau und Reaktorsicherheit (BMUB) ist es, neben der Umsetzung der Richtlinie, gleichzeitig die Moeglichkeit zu nutzen, das Strahlenschutzrecht zu modernisieren, praxistauglich zu verbessern und vollzugsfreundlicher zu gestalten. Die Richtlinie 2013/59/EURATOM wird durch das neue Strahlenschutzgesetz (StrlSchG) und weiteren Regelungen auf Verordnungsebene in das deutsche Recht eingehen. Das Strahlenschutzvorsorgegesetz, die Strahlenschutzverordnung und die Roentgenverordnung werden vom StrlSchG abgeloest werden
Energy Technology Data Exchange (ETDEWEB)
Noun, R. J.
1983-06-01
The SERI Wind Energy Program manages the areas or innovative research, wind systems analysis, and environmental compatibility for the U.S. Department of Energy. Since 1978, SERI wind program staff have conducted in-house aerodynamic and engineering analyses of novel concepts for wind energy conversion and have managed over 20 subcontracts to determine technical feasibility; the most promising of these concepts is the passive blade cyclic pitch control project. In the area of systems analysis, the SERI program has analyzed the impact of intermittent generation on the reliability of electric utility systems using standard utility planning models. SERI has also conducted methodology assessments. Environmental issues related to television interference and acoustic noise from large wind turbines have been addressed. SERI has identified the causes, effects, and potential control of acoustic noise emissions from large wind turbines.
International Nuclear Information System (INIS)
Suslov, I.M.
2005-01-01
Various perturbation series are factorially divergent. The behavior of their high-order terms can be determined by Lipatov's method, which involves the use of instanton configurations of appropriate functional integrals. When the Lipatov asymptotic form is known and several lowest order terms of the perturbation series are found by direct calculation of diagrams, one can gain insight into the behavior of the remaining terms of the series, which can be resummed to solve various strong-coupling problems in a certain approximation. This approach is demonstrated by determining the Gell-Mann-Low functions in φ 4 theory, QED, and QCD with arbitrary coupling constants. An overview of the mathematical theory of divergent series is presented, and interpretation of perturbation series is discussed. Explicit derivations of the Lipatov asymptotic form are presented for some basic problems in theoretical physics. A solution is proposed to the problem of renormalon contributions, which hampered progress in this field in the late 1970s. Practical perturbation-series summation schemes are described both for a coupling constant of order unity and in the strong-coupling limit. An interpretation of the Borel integral is given for 'non-Borel-summable' series. Higher order corrections to the Lipatov asymptotic form are discussed
Energy Technology Data Exchange (ETDEWEB)
Krause, J. [NEWTEC, Plaston AG, Widnau (Switzerland)
1997-12-31
In Malbun in Liechtenstein a grid-connected 22 kW{sub p} PV system has been set up at an altitude of 1900 metres. This system serves its operator as a test of potovoltaics in general and of the mounting systems used in its load-bearing contruction and the fastening of its modules. The present article describes the load-bearing construction and plastic mounting cramp employed. (HW) [Deutsch] Im liechtensteinischen Malbun wurde auf 1900 Metern ueber Meer eine netzgekoppelte 11 kWp-PV-Anlage erstellt, die fuer den Anlagenbetreiber als Test fuer die Photovoltaik im allgemeinen wie auf fuer neue Montagesysteme sowohl bei der Tragkonstruktion als auch bei der Modulbefestigung dienen soll. Tragkonstruktion und Kunststoff-Montageklammer werden dargestellt. (HW)
National Research Council Canada - National Science Library
Adler, Robert
1997-01-01
We describe how to take a stable, ARMA, time series through the various stages of model identification, parameter estimation, and diagnostic checking, and accompany the discussion with a goodly number...
Multivariate Time Series Search
National Aeronautics and Space Administration — Multivariate Time-Series (MTS) are ubiquitous, and are generated in areas as disparate as sensor recordings in aerospace systems, music and video streams, medical...
National Oceanic and Atmospheric Administration, Department of Commerce — The Historical Climatology Series (HCS) is a set of climate-related publications published by NOAA's National Climatic Data Center beginning in 1978. HCS is...
DEFF Research Database (Denmark)
Hisdal, H.; Holmqvist, E.; Hyvärinen, V.
Awareness that emission of greenhouse gases will raise the global temperature and change the climate has led to studies trying to identify such changes in long-term climate and hydrologic time series. This report, written by the......Awareness that emission of greenhouse gases will raise the global temperature and change the climate has led to studies trying to identify such changes in long-term climate and hydrologic time series. This report, written by the...
Energy Technology Data Exchange (ETDEWEB)
Fischer, S. [Klinik und Poliklinik fuer Nuklearmedizin, Ludwig-Maximilians-Univ. Muenchen (Germany)
2002-05-01
The new radiation protection ordinance for the first time acknowledges the role of the nuclear medicine technologists for the technical assistance in the use of radiopharmaceuticals and radiation with human beings in medicine. Therefore changes are required for the technologists in terms of their qualification and continuing education during their professional life and in the daily routine in a nuclear medicine department. The new ordinance clearly defines which group of people is allowed to work as nuclear medicine technologists and also which special knowledge in radiation protection is mandatory to make sure that nobody without this certified education is performing the work of a nuclear medicine technologist. The new effective dose limit for people working with radiation will not change the daily work, but new regulations for pregnant women or breastfeeding mothers working in nuclear medicine will bring dramatic changes. (orig.) [German] Die neue Strahlenschutzverordnung beruecksichtigt zum ersten Mal ausdruecklich die Rolle des medizinisch-technischen Personals bei der 'technischen Mitwirkung bei der Anwendung radioaktiver Stoffe oder ionisierender Strahlung am Menschen in der Heilkunde oder der Zahnheilkunde'. Dadurch ergeben sich fuer die MTRA neue Anforderungen in Bezug auf Ausbildungsvoraussetzungen, berufliche Fortbildung und auch auf die Ablaeufe in der taeglichen Routine. Der Personenkreis, der zur technischen Mitwirkung berechtigt ist, wurde genau definiert, ebenso wie dessen Fachkunde, mit der nun sichergestellt werden soll, dass keine Personen ohne Kenntnisse im Strahlenschutz die Taetigkeiten der MTRA ausfuehren. Die neu festgelegte Obergrenze der effektiven Dosis fuer beruflich strahlenexponiertes Personal wird fuer das technische Personal keine merkbaren Auswirkungen mit sich bringen, dafuer aber die Neuerungen bezueglich der Beschaeftigung von Schwangeren und stillenden Frauen. (orig.)
On Sums of Numerical Series and Fourier Series
Pavao, H. Germano; de Oliveira, E. Capelas
2008-01-01
We discuss a class of trigonometric functions whose corresponding Fourier series, on a conveniently chosen interval, can be used to calculate several numerical series. Particular cases are presented and two recent results involving numerical series are recovered. (Contains 1 note.)
Müller, Bernhard
2017-01-01
Die additive Fertigung von Komponenten ermöglicht vollkommen neue Wege in der Entwicklung und Fertigung innovativer Bauteile und Produkte. Das Spektrum am Markt verfügbarer sowie neu an den Markt gelangender additiver Fertigungsverfahren ist weit und unübersichtlich. Einige wenige Verfahren haben bereits heute einen Status erreicht, der serienhafte industrielle Applikation möglich macht. Dazu gehört zum Beispiel das pulverbett- und laserbasierte Verfahren Laser-Strahlschmelzen zur additiven H...
Energy Technology Data Exchange (ETDEWEB)
Schwanhold, E. [comp.
2000-07-01
The meeting gathered policymakers, members of the energy industry, the business consulting professions, and scientific institutes and relevant technology companies. New perspectives have been discussed in the context of required framework conditions and processes that have to/can be put in place, or further developed, in order to create a concrete basis or stronger incentives for realisation of climate protection and environmental policy goals in the energy sector. There have been two panel discussions on the issue of whether investing in clean generation technologies will be rewarding. Five papers each presented to these panels have been analysed and prepared for separate retrieval from the database, as well as five papers each of the discussion forum A, ''New perspectives for energy efficiency measures and contracting partnerships'', and the discussion forum B, ''New perspectives for distributed power generation with CHP systems''. From the discussion forum C, ''New perspectives for renewable energy sources'', one paper has been prepared for separate retrieval. (CB) [German] Die Tagung war eine Diskussionsplattform fuer Teilnehmer aus den Bereichen Politik, Energiewirtschaft und wirtschaftsberatende Berufe, Forschungsinstitute und Technologieunternehmen. Neue Perspektiven wurden diskutiert im Zusammenhang mit den Rahmenbedingungen und Moeglichkeiten, die entwickelt oder verstaerkt werden koennen/muessen, um eine konkrete Basis oder staerkere Anreize zur Verwirklichung der Ziele der Klima- und Umweltschutzpolitik in der Energiewirtschaft zu schaffen. Es gab ein Diskussionsforum zur Frage der Wirtschaftlichkeit von Investitionen in saubere Energieerzeugungstechnologien und Energieeffizienz, hiervon wurden 5 Beitraege als Einzelaufnahmen in die Datenbank aufgenommen. Ebenfalls vom Forum A, ''Neue Perspektiven fuer Stromeinsparung und Contracting'', und Forum B, ''Neue
Energy Technology Data Exchange (ETDEWEB)
Layer, G. [Klinikum Ludwigshafen gGmbH, Zentralinstitut fuer Diagnostische und Interventionelle Radiologie, Ludwigshafen (Germany)
2017-07-15
europaeischen Richtlinie (2013/59/Euratom) aus dem Jahr 2013 in nationales Recht erfordert die Anpassung nationaler gesetzlicher Regularien. Alle Bereiche des Schutzes vor ionisierender Strahlung werden dieses Jahr systematisch mit dem neuen Strahlenschutzgesetz StrlSchG erfasst. Dadurch werden Roentgenverordnung und Strahlenschutzverordnung auf hoeherem Autoritaetsniveau zusammengefuehrt. Die Hauptteile des StrlSchG bekommen eine neue Systematik und gliedern nach Expositionssituation: Strahlenschutz bei geplanten Expositionssituationen, Strahlenschutz bei Notfallexpositionssituationen, Strahlenschutz bei bestehenden Expositionssituationen und expositionssituationsuebergreifende Vorschriften. Die fuer die Radiologie wichtigsten erstmals oder modifiziert geregelten Punkte betreffen die Frueherkennung, wo die Anwendung von Roentgen- oder radioaktiver Strahlung unter bestimmten Bedingungen prinzipiell erlaubt wird, das Hinzuziehen des Medizinphysikexperten bei allen strahlendiagnostischen Untersuchungsverfahren und interventionsradiologischen Anwendungen, die mit hohen Dosen der untersuchten Person verbunden sind, die Teleradiologie als weiterhin genehmigungsbeduerftiger Sonderfall der Anwendung von Roentgenstrahlung am Menschen, jetzt mit der erforderlichen Fachkunde im Strahlenschutz, vormals mit der Gesamtfachkunde sowie die Forschung mit Ersatz des vereinfachten Genehmigungsverfahrens durch ein Anzeigeverfahren. Weiterhin kann sich der Strahlenschutzbeauftragte im Konfliktfall im Gegensatz zu bisherigen Regelungen direkt an die Aufsichtsbehoerde wenden, was eine deutliche Staerkung seiner Autoritaet bedeutet. Der einzige Dosisgrenzwert, bei dem es zu einer deutlichen Absenkung kommen wird, ist die Organaequivalenzdosis der Augenlinse, deren Hoechstwert bei beruflich Strahlenexponierten von 150 auf 20 mSv pro Jahr herabgesetzt wird. (orig.)
DEFF Research Database (Denmark)
Fischer, Paul; Hilbert, Astrid
2012-01-01
We introduce a platform which supplies an easy-to-handle, interactive, extendable, and fast analysis tool for time series analysis. In contrast to other software suits like Maple, Matlab, or R, which use a command-line-like interface and where the user has to memorize/look-up the appropriate...... commands, our application is select-and-click-driven. It allows to derive many different sequences of deviations for a given time series and to visualize them in different ways in order to judge their expressive power and to reuse the procedure found. For many transformations or model-ts, the user may...... choose between manual and automated parameter selection. The user can dene new transformations and add them to the system. The application contains efficient implementations of advanced and recent techniques for time series analysis including techniques related to extreme value analysis and filtering...
Rheumatoid Arthritis Educational Video Series
Full Text Available ... Patient Webcasts / Rheumatoid Arthritis Educational Video Series Rheumatoid Arthritis Educational Video Series This series of five videos ... member of our patient care team. Managing Your Arthritis Managing Your Arthritis Managing Chronic Pain and Depression ...
Rheumatoid Arthritis Educational Video Series
... Corner / Patient Webcasts / Rheumatoid Arthritis Educational Video Series Rheumatoid Arthritis Educational Video Series This series of five videos ... Your Arthritis Managing Chronic Pain and Depression in Arthritis Nutrition & Rheumatoid Arthritis Arthritis and Health-related Quality of Life ...
The new 4MATIC in the S-Class by Mercedes-Benz; Die neue 4MATIC in der S-Klasse von Mercedes-Benz
Energy Technology Data Exchange (ETDEWEB)
Basshuysen, R. van (ed.)
2006-09-15
The trademark 4MATIC has now graced the all-wheel-drive model series from Mercedes-Benz for 20 years. And the number of series has been steadily on the increase: customers are now able to choose from seven model series with a total of 48 all-wheel-drive vehicle models. This means that Mercedes-Benz offers its customers the widest range of all-wheel-drive models available anywhere. (orig.)
DEFF Research Database (Denmark)
Moskowitz, Tobias J.; Ooi, Yao Hua; Heje Pedersen, Lasse
2012-01-01
We document significant “time series momentum” in equity index, currency, commodity, and bond futures for each of the 58 liquid instruments we consider. We find persistence in returns for one to 12 months that partially reverses over longer horizons, consistent with sentiment theories of initial...... under-reaction and delayed over-reaction. A diversified portfolio of time series momentum strategies across all asset classes delivers substantial abnormal returns with little exposure to standard asset pricing factors and performs best during extreme markets. Examining the trading activities...
Woodward, Wayne A; Elliott, Alan C
2011-01-01
""There is scarcely a standard technique that the reader will find left out … this book is highly recommended for those requiring a ready introduction to applicable methods in time series and serves as a useful resource for pedagogical purposes.""-International Statistical Review (2014), 82""Current time series theory for practice is well summarized in this book.""-Emmanuel Parzen, Texas A&M University""What an extraordinary range of topics covered, all very insightfully. I like [the authors'] innovations very much, such as the AR factor table.""-David Findley, U.S. Census Bureau (retired)""…
Predicting chaotic time series
International Nuclear Information System (INIS)
Farmer, J.D.; Sidorowich, J.J.
1987-01-01
We present a forecasting technique for chaotic data. After embedding a time series in a state space using delay coordinates, we ''learn'' the induced nonlinear mapping using local approximation. This allows us to make short-term predictions of the future behavior of a time series, using information based only on past values. We present an error estimate for this technique, and demonstrate its effectiveness by applying it to several examples, including data from the Mackey-Glass delay differential equation, Rayleigh-Benard convection, and Taylor-Couette flow
Neue Laser und Strahlquellen - alte und neue Risiken?
DEFF Research Database (Denmark)
Paasch, Uwe; Schwandt, Antje; Seeber, Nikolaus
2017-01-01
Die Entwicklungen im Bereich dermatologischer Laser, hochenergetischer Blitzlampen, LED und neuer Energie- und Strahlquellen der letzten Jahre haben gezeigt, dass mit neuen Wellenlängen, Konzepten und Kombinationen zusätzliche, zum Teil über den ästhetischen Bereich hinaus gehende therapeutische ...
Danish television drama series
DEFF Research Database (Denmark)
Degn, Hans-Peter; Krogager, Stinne Gunder Strøm
2017-01-01
In recent years, Danish television drama series have become an internationally acclaimed export success. This article analyses the development on the domestic market lying behind this international recognition. A change in production dogmas has formed the characteristics of these successful Danish...... the characteristics of these productions and the development of their audience profiles across age, gender and educational level....
Composition: Unity - Diversity series
DEFF Research Database (Denmark)
Bergstrøm-Nielsen, Carl
2015-01-01
Unity-Diversity series are open compositions to be realised by improvising musicians. See more about my composition practise in the entry "Composition - General Introduction". This work is licensed under a Creative Commons "by-nc" License. You may for non-commercial purposes use and distribute it...
Indian Academy of Sciences (India)
Home; Fellowship. Fellow Profile. Elected: 1984 Honorary. Series, Prof. George William. Date of birth: 22 February 1920. Date of death: 2 January 1995. YouTube; Twitter; Facebook; Blog. Academy News. IAS Logo. 29th Mid-year meeting. Posted on 19 January 2018. The 29th Mid-year meeting of the Academy will be held ...
Indian Academy of Sciences (India)
Home; Journals; Proceedings – Mathematical Sciences; Volume 115; Issue 4. On the Series ∑ k = 1 ∞ ( 3 k k ) − 1 k − n x k. Necdet Batir. Volume 115 Issue 4 November 2005 pp 371- ... Author Affiliations. Necdet Batir1. Department of Mathematics, Faculty of Arts and Sciences, Yüzüncü Yil University, 65080 Van, Turkey ...
Lyklema, J.
2009-01-01
Hofmeister, or lyotropic, series date back to 1888, when the founder arranged a large number of electrolytes in sequences with respect to their effectiveness salting out egg white. Since then the name has been applied to various phenomena involving ion specificity. In order to isolate effects
New power packs; Neue Kraftpakete
Energy Technology Data Exchange (ETDEWEB)
Lennartz, Marc Wilhelm
2013-11-15
In this article reports about CHP's that work with wood as an energy source. Thus, for example the Austrian company Button Energy has developed a micro-CHP unit that produces electricity by steam. In this Bison PowerBlock works a pellet boiler with control, producing wood gas and mixed with secondary air. The company Oekofen with their Pellematic Smart-E is using a modified pellet stove with integrated buffer storage plus Stirling engine, which is responsible for the generation of electricity. The Lower Bavarian company Spanner Re GmbH produces CHP operated by wood chips. [German] In diesem Artikel wird ueber Blockheizkraftwerke (BHKW) berichtet, die mit Holz als Energiequelle arbeiten. So hat z.B. die oesterreichische Firma Button Energy hat ein Mikro-BHKW entwickelt, das Strom mittels Wasserdampf produziert. In diesem Bison Powerblock arbeitet ein Pelletkessel mit Regelung, der Holzgas erzeugt und dieses mit Sekundaerluft mischt. Die Firma Oekofen setzt bei ihrem Pellematic Smart-E auf einen modifizierten Pelletofen mit integriertem Pufferspeicher plus Stirlingmotor, der fuer die Stromerzeugung verantwortlich ist. Das niederbayrische Unternehmen Spanner Re GmbH produziert BHKW, die mit Hackschnitzeln betrieben werden.
Sammelrezension: Neue Publikationen zum Horrorfilm
Stiasny, Philipp
2005-01-01
Reynold Humphries: The American Horror Film. An IntroductionPeter Hutchings: The Horror FilmJoseph Maddrey: Nightmares in Red, White and Blue. The Evolution of the American Horror FilmBarry Keith Grant, Christopher Sharret (Hg.): Planks of Reason. Essays on the Horror Film
Neues vom Heringsparasiten Ichthyophonus sp.
Lang, Thomas
1994-01-01
Seit dem Massensterben von Heringen entlang der schwedischen Südküste im Sommer 1991, aufgrund einer Infektion mit dem parasitischen Pilz Ichthyophonus sp., wird der Gesundheitszustand der Heringsbestände in den europäischen Seegebieten intensiv überwacht. Diese Untersuchungen, an denen sich auch die Bundesforschungsanstalt für Fischerei beteiligt, werden koordiniert von der "Arbeitsgruppe über Pathologie und Krankheiten mariner Organismen" des Internationalen Rates für Meeresforschung (IC...
Directory of Open Access Journals (Sweden)
Kerstin Helmkamp
2015-12-01
Full Text Available Im Zuge der Digitalisierung aller Lebensbereiche im 21. Jahrhundert, die sich auch im Bibliotheksbereich niederschlägt, gewinnt die Automatisierung von Arbeitsabläufen durch Softwareeinsatz eine ganze neue Bedeutung. Die zunehmende Vernetzung sowie webbasierte und für mobile Endgeräte optimierte Services eröffnen neue Nutzungsszenarien, die über das Vorhandene weit hinausgehen, und von Politik und Wirtschaft unter der Überschrift „Wirtschaft 4.0“ längst intensiv rezipiert werden. Am Beispiel des neuen Lern- und Studiengebäudes (LSG und der Verbesserungen der Studien- und Lernbedingungen am Campus-Nord der Universität Göttingen wird gezeigt, wie sich die Benutzungsservices für Studierende in den letzten Jahren einschneidend verändert haben und zu einer deutlichen Verbesserung der Lern- und Studienbedingungen auf dem Göttinger Campus geführt haben. Eine zentrale Voraussetzung dabei war die frühzeitige Partizipation der zukünftigen Nutzer/innen sowie eine konsequent bedarfsorientierte Planung. As all areas of life become more and more digitized in the 21st century, which can also be seen in the library landscape, the automation of workflows by means of software gains a whole new meaning. Increased networking as well as services which are web-based and optimized for mobile devices open up new usage scenarios which go far beyond what is presently common. In the context of “Economy 4.0”, these developments have long received the close attention of both the political and the economic sector. Using the example of the new Learning and Study Building (LSG and the redevelopment of the North Campus of the University of Göttingen, the article shows how this general trend has been translated into specific user services for students, substantially changing these services and leading to a significant improvement in the learning and study conditions on the Göttingen campus. A key prerequisite in this process were the early
Cascajosa Virino, Concepción
2017-01-01
Reseña: Historia de las series de Toni de la Torre: la gran impostura Durante mucho tiempo los profesores de cine en España se han quejado (amargamente y en privado) de la recurrencia en la bibliografía de los trabajos de sus estudiantes de los libros de un autor conocido por la escasa calidad de sus textos, cuyos vistosos títulos garantizan que acaben en las estanterías de las bibliotecas universitarias. Es muy propio de la cultura española hacer duras aseveraciones en foros irrelevantes y, ...
Knopp, Konrad
1956-01-01
One of the finest expositors in the field of modern mathematics, Dr. Konrad Knopp here concentrates on a topic that is of particular interest to 20th-century mathematicians and students. He develops the theory of infinite sequences and series from its beginnings to a point where the reader will be in a position to investigate more advanced stages on his own. The foundations of the theory are therefore presented with special care, while the developmental aspects are limited by the scope and purpose of the book. All definitions are clearly stated; all theorems are proved with enough detail to ma
Directory of Open Access Journals (Sweden)
Muneer Mohamed
2018-04-01
Full Text Available Tattoo is going to be a very common practice especially among young people and we are witnessing a gradual increase of numerous potential complications to tattoo placement which are often seen by physicians, but generally unknown to the public. The most common skin reactions to tattoo include a transient acute inflammatory reaction due to trauma of the skin with needles and medical complications such as superficial and deep local infections, systemic infections, allergic contact dermatitis, photodermatitis, granulomatous and lichenoid reactions, and skin diseases localized on tattooed area (eczema, psoriasis, lichen, and morphea. In this series we present three cases of tattoo reaction.
Parker, N
1979-01-27
One hundred people who were accused either of murder (70 persons) or of attempted murder (30 persons) in Queensland were personally examined by the writer. The methods, motives, and ways of prevention of homicide are discussed. A considerable preportion of murderers in this series were either mentally ill or severely emotionally disturbed at the time the crime was committed, and at least one in 10 of these murders could have been prevented. It is recommended that the treatment and assessment of potentially violent psychotic patients should be undertaken more carefully, and that the antipsychiatrist campaigns for the freedom of the individual should be tempered with a consideration for public safety.
de Branges, Louis
2015-01-01
This text for advanced undergraduate and graduate students introduces Hilbert space and analytic function theory, which is centered around the invariant subspace concept. The book's principal feature is the extensive use of formal power series methods to obtain and sometimes reformulate results of analytic function theory. The presentation is elementary in that it requires little previous knowledge of analysis, but it is designed to lead students to an advanced level of performance. This is achieved chiefly through the use of problems, many of which were proposed by former students. The book's
Introduction to Time Series Modeling
Kitagawa, Genshiro
2010-01-01
In time series modeling, the behavior of a certain phenomenon is expressed in relation to the past values of itself and other covariates. Since many important phenomena in statistical analysis are actually time series and the identification of conditional distribution of the phenomenon is an essential part of the statistical modeling, it is very important and useful to learn fundamental methods of time series modeling. Illustrating how to build models for time series using basic methods, "Introduction to Time Series Modeling" covers numerous time series models and the various tools f
Antiderivative Series for Differentiable Functions
Howard, Roy M.
2004-01-01
A series defining the antiderivative of an n th order differentiable function is defined. This series provides an explicit expression for the second part of the Fundamental Theorem of Calculus and can facilitate the establishment of new antiderivative functions.
GPS Position Time Series @ JPL
Owen, Susan; Moore, Angelyn; Kedar, Sharon; Liu, Zhen; Webb, Frank; Heflin, Mike; Desai, Shailen
2013-01-01
Different flavors of GPS time series analysis at JPL - Use same GPS Precise Point Positioning Analysis raw time series - Variations in time series analysis/post-processing driven by different users. center dot JPL Global Time Series/Velocities - researchers studying reference frame, combining with VLBI/SLR/DORIS center dot JPL/SOPAC Combined Time Series/Velocities - crustal deformation for tectonic, volcanic, ground water studies center dot ARIA Time Series/Coseismic Data Products - Hazard monitoring and response focused center dot ARIA data system designed to integrate GPS and InSAR - GPS tropospheric delay used for correcting InSAR - Caltech's GIANT time series analysis uses GPS to correct orbital errors in InSAR - Zhen Liu's talking tomorrow on InSAR Time Series analysis
Rheumatoid Arthritis Educational Video Series
Full Text Available ... Corner / Patient Webcasts / Rheumatoid Arthritis Educational Video Series Rheumatoid Arthritis Educational Video Series This series of five videos ... Your Arthritis Managing Chronic Pain and Depression in Arthritis Nutrition & Rheumatoid Arthritis Arthritis and Health-related Quality of Life ...
Harmonic Series Meets Fibonacci Sequence
Chen, Hongwei; Kennedy, Chris
2012-01-01
The terms of a conditionally convergent series may be rearranged to converge to any prescribed real value. What if the harmonic series is grouped into Fibonacci length blocks? Or the harmonic series is arranged in alternating Fibonacci length blocks? Or rearranged and alternated into separate blocks of even and odd terms of Fibonacci length?
Directory of Open Access Journals (Sweden)
Ursula Stohler
2015-08-01
Full Text Available This article presents a research project on the history of mentalities in Czech culture of the 20th and the beginning of the 21st century. The project analyses textbooks for the teaching of Czech literature for secondary schools. It focuses in particular on the excerpts from the literary works and analyses their potential for the learners to acquire cultural and historical knowledge as well as personal skills. These excerpts are conceptualized here as Denkbilder, a term that has been used repeatedly in German literature studies recently to define short prose texts that stimulate imagination as well as reflection. Responding to the high number of literary works from world literature in the Czech textbooks analysed for the project, this article addresses the contrasting presentations of one classic of German literature, Erich Maria Remarque’s 1929 novel All Quiet on the Western Front (Im Westen nichts Neues. It illustrates how a single literary work can be presented in different ways in literature textbooks, offering the learners different approaches for relating to the text and activating their cognitive and imaginative resources.
Energy Technology Data Exchange (ETDEWEB)
Hamberger, W.; Mauter, G. [Audi AG, Ingolstadt (Germany)
2003-07-01
The Audi MMI, proprietary development of the AUDI AG, resulted from the close and efficient collaboration of a multidisciplinary so-called ''MMI-Team'' formed by members of the design, ergonomics and electronics divisions. How to ensure an effective communication among engineers, software developers, designers and ergonomists turned out to be a challenge as no commonly comprehensible specification tools existed. While designers express themselves mainly using graphics and animations, ergonomists tend to call for abstract requirements. The other end is formed by the software developers who demand precise menu specifications. This problem was solved by developing a new specification environment. (orig.) [German] Das Audi MMI ist von einem interdisziplinaeren, dem sogen. ''MMI-Team'' in enger, effizienter Zusammenarbeit der Bereiche Design, Ergonomie und Elektronik bei der AUDI AG in Eigenentwicklung entstanden. Die Herausforderung war die Gewaehrleistung einer effektiven Kommunikation zwischen Ingenieurwesen, Softwareentwicklern, Designern und Ergonomen. Das Problem dabei bestand im Fehlen von allgemein verstaendlichen Spezifikationsmitteln. Waehrend sich die Designer vorwiegend in Grafiken und Animationen ausdruecken, kommen von den Ergonomen groesstenteils abstrakte Forderungen. Den Gegenpol bilden die Softwareentwickler, die konkrete Menuespezifikationen fordern. Geloest wurde dieses Problem durch eine neue Spezifikationslandschaft. (orig.)
Energy Technology Data Exchange (ETDEWEB)
Weschta, A. [Siemens AG, Erlangen (Germany)
1995-08-09
The new concept of German Railways will in future be based on two types of train: the ICE 2.2, a high speed train with speeds of up to 330 km/hour and the ICT with a maximum speed of 230 km/hour. For the ICT, the number of carriages can be matched to the demand. The ICE and ICT are driven by 3 phase AC motors. The construction and method of operation of the drive are explained. Apart from the so-called electrical brakes and the disk brakes known from car construction, the eddy current brake is used as a further braking system. An electromagnet situated above the rail has DC flowing through it for braking purposes. Eddy currents are caused by this, which have a braking effect. (BWI) [Deutsch] Das neue Konzept der Deutschen Bahn wird sich in Zukunft auf zwei Zugtypen stuetzen: der ICE 2.2, ein Hochgeschwindigkeitszug bis zu 330 km/h und der ICT mit einer Hoechstgeschwindigkeit von 230 km/h. Beim ICT kann die Anzahl der Wagen dem bedarf angepasst werden. ICE und ICT werden von Drehstrom-Fahrmotoren angetrieben. Aufbau und Funktionsweise des Antriebes werden erlaeutert. Neben der sog. elektrischen Bremse und den vom Automobilbau her bekannten Scheibenbremsen wird als weiteres Bremssystem die Wirbelstrombremse eingesetzt. Hierbei wird ein ueber der Schiene angeordneter Elektromagnet zum Bremsen von einem Gleichstrom durchflossen. Es entstehen dadurch Wirbelstroeme, die eine bremsende Wirkung haben. (BWI)
Energy Technology Data Exchange (ETDEWEB)
Merz, T.; Raeckers, B.
1999-08-01
Epoxy resins cured by catalysts based on chelate compound can offer an additional potential concerning storage and heat stability, toughness and curing characteristic. To prove these advantages and to prepare a serial application was target of the project, by which physico-chemical investigations, determination of mechanical properties and component tests were used. Besides an improvement of storage time and a minimized curing cycle a satisfactory processing behaviour and mechanical properties approaching currently used aircraft materials became evident. Serial production of fibre reinforced components for automotive industry is basically possible, because all requirements concerning costs, performance and station time were met. The results can also be used for new applications in other technical fields like apparatus construction or sporting goods industry. (orig.) [German] Mittels Metallorganokatalysatoren gehaertete Epoxidharze versprechen gegenueber herkoemmlichen Systemen zusaetzliche Potentiale hinsichtlich Lager- und Waermestabilitaet sowie Zaehigkeit und Haertungscharakteristik. Diese nachzuweisen und eine zukuenftige Serienanwendung vorzubereiten war Ziel des Projektes, wozu physico-chemische Untersuchungen, mechanische Kennwertermittlungen und Bauteilversuche dienten. Neben verbesserter Lagerstabilitaet und minimierten Haertungszyklen konnten gute Verarbeitungseingeschaften und ein Leistungsprofil nachgewiesen werden, das nahe an das heutiger Luftfahrtwerkstoffe heranreicht. Die Serienherstellung von Faserverbundbauteilen im Automobilbau ist prinzipiell moeglich, da durch die entwickelten Katalysatoren alle Vorgaben hinsichtlich Kosten, Leistungsfaehigkeit und Taktzeiten erreicht werden konnten. Hierdurch koennen sich auch fuer andere Bereiche (z.B. Geraetebau, Sportartikelindustrie) neue Anwendungsmoeglichkeiten eroeffnen. (orig.)
Energy Technology Data Exchange (ETDEWEB)
Merz, T.; Raeckers, B.; Boettcher, A.; Haessler, R.; Renner, M.; Schmidtke, K.
1999-08-01
Epoxy resins cured by catalysts based on chelate compound can offer an additional potential concerning storage and heat stability, toughness and curing characteristic. To prove these advantages and to prepare a serial application was target of the project, by which physico-chemical investigations, determination of mechanical properties and component tests were used. Besides an improvement of storage time and a minimized curing cycle a satisfactory processing behaviour and mechanical properties approaching currently used aircraft materials became evident. Serial production of fibre reinforced components for automotive industry is basically possible, because all requirements concerning costs, performance and station time were met. The results can also be used for new applications in other technical fields like apparatus construction or sporting goods industry. (orig.) [German] Mittels Metallorganokatalysatoren gehaertete Epoxidharze versprechen gegenueber herkoemmlichen Systemen zusaetzliche Potentiale hinsichtlich Lager- und Waermestabilitaet sowie Zaehigkeit und Haertungscharakteristik. Diese nachzuweisen und eine zukuenftige Serienanwendung vorzubereiten war Ziel des Projektes, wozu physico-chemische Untersuchungen, mechanische Kennwertermittlungen und Bauteilversuche dienten. Neben verbesserter Lagerstabilitaet und minimierten Haertungszyklen konnten gute Verarbeitungseingeschaften und ein Leistungsprofil nachgewiesen werden, das nahe an das heutiger Luftfahrtwerkstoffe heranreicht. Die Serienherstellung von Faserverbundbauteilen im Automobilbau ist prinzipiell moeglich, da durch die entwickelten Katalysatoren alle Vorgaben hinsichtlich Kosten, Leistungsfaehigkeit und Taktzeiten erreicht werden konnten. Hierdurch koennen sich auch fuer andere Bereiche (z.B. Geraetebau, Sportartikelindustrie) neue Anwendungsmoeglichkeiten eroeffnen. (orig.)
2007-01-01
The LHC: an accelerator of science This series of lectures is all about understanding the scientific and technological challenges of the phenomenal LHC project and assessing its innovations through their everyday applications. Come and take a sneak preview of the LHC! Communicate: the Grid, a computer of global dimensions François Grey, head of communication in CERN’s Information Technology Department How will it be possible for the 15 million billion bytes of data generated by the LHC every year to be handled and stored by a computer that doesn’t have to be the size of a skyscraper? The computer scientists have the answer: the Grid, which will harness the power of tens of thousands of computers all over the world by creating a network of computers and making them operate as one. >>> Lectures are free and require no specialist knowledge. In french. >>> By reservation only: tel. +41 (0)22 767 76 76
Shimada, Yutaka; Ikeguchi, Tohru; Shigehara, Takaomi
2012-10-01
In this Letter, we propose a framework to transform a complex network to a time series. The transformation from complex networks to time series is realized by the classical multidimensional scaling. Applying the transformation method to a model proposed by Watts and Strogatz [Nature (London) 393, 440 (1998)], we show that ring lattices are transformed to periodic time series, small-world networks to noisy periodic time series, and random networks to random time series. We also show that these relationships are analytically held by using the circulant-matrix theory and the perturbation theory of linear operators. The results are generalized to several high-dimensional lattices.
Schipper, C Ian; Jakobsson, Sveinn P; White, James D L; Michael Palin, J; Bush-Marcinowski, Tim
2015-06-26
The volcanic island of Surtsey (Vestmannaeyjar, Iceland) is the product of a 3.5-year-long eruption that began in November 1963. Observations of magma-water interaction during pyroclastic episodes made Surtsey the type example of shallow-to-emergent phreatomagmatic eruptions. Here, in part to mark the 50(th) anniversary of this canonical eruption, we present previously unpublished major-element whole-rock compositions, and new major and trace-element compositions of sideromelane glasses in tephra collected by observers and retrieved from the 1979 drill core. Compositions became progressively more primitive as the eruption progressed, with abrupt changes corresponding to shifts between the eruption's four edifices. Trace-element ratios indicate that the chemical variation is best explained by mixing of different proportions of depleted ridge-like basalt, with ponded, enriched alkalic basalt similar to that of Iceland's Eastern Volcanic Zone; however, the systematic offset of Surtsey compositions to lower Nb/Zr than other Vestmannaeyjar lavas indicates that these mixing end members are as-yet poorly contained by compositions in the literature. As the southwestern-most volcano in the Vestmannaeyjar, the geochemistry of the Surtsey Magma Series exemplifies processes occurring within ephemeral magma bodies on the extreme leading edge of a propagating off-axis rift in the vicinity of the Iceland plume.
International Nuclear Information System (INIS)
Vajna, Szabolcs; Kertész, János; Tóth, Bálint
2013-01-01
Many human-related activities show power-law decaying interevent time distribution with exponents usually varying between 1 and 2. We study a simple task-queuing model, which produces bursty time series due to the non-trivial dynamics of the task list. The model is characterized by a priority distribution as an input parameter, which describes the choice procedure from the list. We give exact results on the asymptotic behaviour of the model and we show that the interevent time distribution is power-law decaying for any kind of input distributions that remain normalizable in the infinite list limit, with exponents tunable between 1 and 2. The model satisfies a scaling law between the exponents of interevent time distribution (β) and autocorrelation function (α): α + β = 2. This law is general for renewal processes with power-law decaying interevent time distribution. We conclude that slowly decaying autocorrelation function indicates long-range dependence only if the scaling law is violated. (paper)
`Indoor` series vending machines; `Indoor` series jido hanbaiki
Energy Technology Data Exchange (ETDEWEB)
Gensui, T.; Kida, A. [Fuji Electric Co. Ltd., Tokyo (Japan); Okumura, H. [Fuji Denki Reiki Co. Ltd., Tokyo (Japan)
1996-07-10
This paper introduces three series of vending machines that were designed to match the interior of an office building. The three series are vending machines for cups, paper packs, cans, and tobacco. Among the three series, `Interior` series has a symmetric design that was coated in a grain pattern. The inside of the `Interior` series is coated by laser satin to ensure a sense of superior quality and a refined style. The push-button used for product selection is hot-stamped on the plastic surface to ensure the hair-line luster. `Interior Phase II` series has a bay window design with a sense of superior quality and lightness. The inside of the `Interior Phase II` series is coated by laser satin. `Interior 21` series is integrated with the wall except the sales operation panel. The upper and lower dress panels can be detached and attached. The door lock is a wire-type structure with high operativity. The operation block is coated by titanium color. The dimensions of three series are standardized. 6 figs., 1 tab.
From Fourier Series to Rapidly Convergent Series for Zeta(3)
DEFF Research Database (Denmark)
Scheufens, Ernst E
2011-01-01
The article presents a mathematical study which investigates the exact values of the Riemann zeta (ζ) function. It states that exact values can be determined from Fourier series for periodic versions of even power functions. It notes that using power series for logarithmic functions on this such ......The article presents a mathematical study which investigates the exact values of the Riemann zeta (ζ) function. It states that exact values can be determined from Fourier series for periodic versions of even power functions. It notes that using power series for logarithmic functions...
西埜, 晴久
2004-01-01
The paper investigates an application of long-memory processes to economic time series. We show properties of long-memory processes, which are motivated to model a long-memory phenomenon in economic time series. An FARIMA model is described as an example of long-memory model in statistical terms. The paper explains basic limit theorems and estimation methods for long-memory processes in order to apply long-memory models to economic time series.
Energy Technology Data Exchange (ETDEWEB)
Erhardt, R. [Bosch (R.) GmbH, Stuttgart (Germany); Zanten, A.T. van [Bosch (R.) GmbH, Stuttgart (Germany)
1995-12-31
BOSCH is going to introduce a new driving safety system in 1995, the FDR (drive-dynamics-control). Using the measured and estimated dynamic magnitudes as a basis, the system calculates inhowfar the actual vehicle motion differs from the desired stable trace- and direction-consistent handling properties. Depending on the driving situation and driver`s wishes the braking and driving forces at the wheels are adjusted with a considerable divergence in order to achieve the desired handling properties. The system improves the driving stability in all operating states as soon as the dynamic limiting range is reached. It even reduces the risk of skidding in case of extreme steering manoeuvres and also enables the safe control of the vehicle in critical traffic situations. Furthermore the system offers improved basic anti-skid braking system and anti-slip control functions. Due to these advantages it can be expected that the FDR is going to make an important contribution to avoiding accidents and reducing damage. (orig.) [Deutsch] Mit FDR (Fahr-Dynamik-Regelung) wird BOSCH 1995 ein neues Fahrsicherheitssystem einfuehren. Das System berechnet auf der Basis gemessener und geschaetzter fahrdynamischer Groessen, wie stark die tatsaechliche Fahrzeugbewegung von einem gewuenschten stabilen, spur- und richtungstreuen Fahrverhalten abweicht. Die Brems- und Antriebskraefte an den Raedern werden bei deutlicher Abweichung abhaengig von Fahrsituation und Fahrerwunsch so eingestellt, dass die Abweichung minimiert und das gewuenschte Fahrverhalten weitgehend erreicht wird. Das System verbessert die Fahrstabilitaet in allen Betriebszustaenden, sobald der fahrdynamische Grenzbereich erreicht wird. Es reduziert selbst bei extremen Lenkmanoevern die Schleudergefahr drastisch und ermoeglicht auch in kritischen Verkehrssituationen die sicherere Beherrschung des Fahrzeugs. Darueberhinaus bietet das System verbesserte ABS- und ASR-Grundfunktionen. Diese Vorteile lassen erwarten, dass FDR einen
Classroom Issues with Series Tests
Sadek, Jawad; Euler, Russell
2005-01-01
We find infinite series in calculus to be one of the most confusing topics our students encounter. In this note, we look at some issues that our students find difficult or ambiguous involving the Ratio Test, the Root Test, and also the Alternating Series Test. We offer some suggestions and some examples, which could be a supplement to the set of…
Convergence of a Catalan Series
Koshy, Thomas; Gao, Zhenguang
2012-01-01
This article studies the convergence of the infinite series of the reciprocals of the Catalan numbers. We extract the sum of the series as well as some related ones, illustrating the power of the calculus in the study of the Catalan numbers.
Forecasting Cryptocurrencies Financial Time Series
DEFF Research Database (Denmark)
Catania, Leopoldo; Grassi, Stefano; Ravazzolo, Francesco
2018-01-01
This paper studies the predictability of cryptocurrencies time series. We compare several alternative univariate and multivariate models in point and density forecasting of four of the most capitalized series: Bitcoin, Litecoin, Ripple and Ethereum. We apply a set of crypto–predictors and rely...
Time series analysis time series analysis methods and applications
Rao, Tata Subba; Rao, C R
2012-01-01
The field of statistics not only affects all areas of scientific activity, but also many other matters such as public policy. It is branching rapidly into so many different subjects that a series of handbooks is the only way of comprehensively presenting the various aspects of statistical methodology, applications, and recent developments. The Handbook of Statistics is a series of self-contained reference books. Each volume is devoted to a particular topic in statistics, with Volume 30 dealing with time series. The series is addressed to the entire community of statisticians and scientists in various disciplines who use statistical methodology in their work. At the same time, special emphasis is placed on applications-oriented techniques, with the applied statistician in mind as the primary audience. Comprehensively presents the various aspects of statistical methodology Discusses a wide variety of diverse applications and recent developments Contributors are internationally renowened experts in their respect...
Summable series and convergence factors
Moore, Charles N
1938-01-01
Fairly early in the development of the theory of summability of divergent series, the concept of convergence factors was recognized as of fundamental importance in the subject. One of the pioneers in this field was C. N. Moore, the author of the book under review.... Moore classifies convergence factors into two types. In type I he places the factors which have only the property that they preserve convergence for a convergent series or produce convergence for a summable series. In type II he places the factors which not only maintain or produce convergence but have the additional property that
Fourier series and orthogonal polynomials
Jackson, Dunham
2004-01-01
This text for undergraduate and graduate students illustrates the fundamental simplicity of the properties of orthogonal functions and their developments in related series. Starting with a definition and explanation of the elements of Fourier series, the text follows with examinations of Legendre polynomials and Bessel functions. Boundary value problems consider Fourier series in conjunction with Laplace's equation in an infinite strip and in a rectangle, with a vibrating string, in three dimensions, in a sphere, and in other circumstances. An overview of Pearson frequency functions is followe
Time series with tailored nonlinearities
Räth, C.; Laut, I.
2015-10-01
It is demonstrated how to generate time series with tailored nonlinearities by inducing well-defined constraints on the Fourier phases. Correlations between the phase information of adjacent phases and (static and dynamic) measures of nonlinearities are established and their origin is explained. By applying a set of simple constraints on the phases of an originally linear and uncorrelated Gaussian time series, the observed scaling behavior of the intensity distribution of empirical time series can be reproduced. The power law character of the intensity distributions being typical for, e.g., turbulence and financial data can thus be explained in terms of phase correlations.
Models for dependent time series
Tunnicliffe Wilson, Granville; Haywood, John
2015-01-01
Models for Dependent Time Series addresses the issues that arise and the methodology that can be applied when the dependence between time series is described and modeled. Whether you work in the economic, physical, or life sciences, the book shows you how to draw meaningful, applicable, and statistically valid conclusions from multivariate (or vector) time series data.The first four chapters discuss the two main pillars of the subject that have been developed over the last 60 years: vector autoregressive modeling and multivariate spectral analysis. These chapters provide the foundational mater
Rheumatoid Arthritis Educational Video Series
Full Text Available ... and what other conditions are associated with RA. Learning more about your condition will allow you to ... Arthritis Educational Video Series Psoriatic Arthritis 101 2010 E.S.C.A.P.E. Study Patient Update Transitioning ...
Clustering of financial time series
D'Urso, Pierpaolo; Cappelli, Carmela; Di Lallo, Dario; Massari, Riccardo
2013-05-01
This paper addresses the topic of classifying financial time series in a fuzzy framework proposing two fuzzy clustering models both based on GARCH models. In general clustering of financial time series, due to their peculiar features, needs the definition of suitable distance measures. At this aim, the first fuzzy clustering model exploits the autoregressive representation of GARCH models and employs, in the framework of a partitioning around medoids algorithm, the classical autoregressive metric. The second fuzzy clustering model, also based on partitioning around medoids algorithm, uses the Caiado distance, a Mahalanobis-like distance, based on estimated GARCH parameters and covariances that takes into account the information about the volatility structure of time series. In order to illustrate the merits of the proposed fuzzy approaches an application to the problem of classifying 29 time series of Euro exchange rates against international currencies is presented and discussed, also comparing the fuzzy models with their crisp version.
"Feeling" Series and Parallel Resistances.
Morse, Robert A.
1993-01-01
Equipped with drinking straws and stirring straws, a teacher can help students understand how resistances in electric circuits combine in series and in parallel. Follow-up suggestions are provided. (ZWH)
Rheumatoid Arthritis Educational Video Series
Full Text Available ... of Body Weight in Osteoarthritis Educational Videos for Patients Rheumatoid Arthritis Educational Video Series Psoriatic Arthritis 101 ... Patient to an Adult Rheumatologist Drug Information for Patients Arthritis Drug Information Sheets Benefits and Risks of ...
RUVIVAL Publication Series Volume 3
Behrendt, Joachim; Fröndhoff, Dario; Munoz Ardila, Andrea; Orlina, Maria Monina; Rueda Morales, Máryeluz; Schaldach, Ruth; Schaldach, Ruth; Otterpohl, Ralf
2018-01-01
RUVIVAL Publication Series is a compilation of literature reviews on topics concerned with the revitalisation of rural areas. RUVIVAL Publication Series is part of the e-learning project RUVIVAL and each of the three contributions in this publication is connected to further interactive multimedia material, which can be reached under www.ruvival.de. The first literature review is concerned with urine utilisation as a fertiliser in agriculture. Urine contains four important nutrients for pla...
Omega test series - an overview
International Nuclear Information System (INIS)
Knowles, C.P.
2001-01-01
The United States Defense Threat Reduction Agency (DTRA) has supported a series of high explosive calibration experiments that were conducted in the Degelen Mountain area of the Semipalatinsk Test Site (STS) in the Republic of Kazakhstan (ROK). This paper will provide an overview of the second and third tests of this series which have been designated Omega-2 and Omega-3. Omega-2 was conducted on Saturday, September 25, 1999 and Omega-3 on Saturday, July 29, 2000. (author)
Forecasting Cryptocurrencies Financial Time Series
Catania, Leopoldo; Grassi, Stefano; Ravazzolo, Francesco
2018-01-01
This paper studies the predictability of cryptocurrencies time series. We compare several alternative univariate and multivariate models in point and density forecasting of four of the most capitalized series: Bitcoin, Litecoin, Ripple and Ethereum. We apply a set of crypto–predictors and rely on Dynamic Model Averaging to combine a large set of univariate Dynamic Linear Models and several multivariate Vector Autoregressive models with different forms of time variation. We find statistical si...
Energy Technology Data Exchange (ETDEWEB)
Waltner, Anton; Lueckert, Peter; Breitbach, Hermann; Doll, Gerhard; Herwig, Helmut; Kemmler, Roland; Weckenmann, Hartmut [Daimler AG, Stuttgart (Germany)
2010-07-01
With the new 6-cylinder engine, Mercedes-Benz has succeeded in implementing a design which, in addition to providing outstanding performance values along with the highest degree of comfort, also appropriately addresses environmental issues and economic viability. The new 60 V-angle and the extremely lightweight construction in the engine area provide an excellent degree of comfort. With third-generation direct injection (DEO3) in conjunction with multi-spark ignition, it was possible to develop new modes of operation thus opening up new areas of the characteristics map with fuel-optimised lean combustion. The brake specific fuel consumption values set new benchmarks for the combustion engine. Together with stop/start technology, shift point adjustment and the systematic reduction of rolling resistance, improvements in fuel consumption up to 20% are possible. All together, this engine design represents an outstanding engine line-up in all target vehicle model series from Mercedes-Benz. Sustainability for the future is also guaranteed through the advantageous injection technology and modularity. (orig.)
Energy Technology Data Exchange (ETDEWEB)
Schroeder, Frank
2011-02-15
The contribution under consideration reports on the upcoming challenges of the climate protection financing in developing countries. The extent of the probably required financing and the current status of the development of the developed countries are presented. Ambiguities regarding the out-payment and tracking of the financial contributions for the climate protection are described. Subsequently, a series of general criteria for the evaluation of the different financing sources are invoked. These criteria are based on principles originated from the UNFCC (United Nations Framework Convention on Climate Change; Bonn, Federal Republic of Germany) climate protection negotiations and consider a broader development political context and certain equity considerations. The advantages and disadvantages of potential sources of income of developed countries are discussed in order to fulfil promises for new and additional resources for adaptation measures and preventative measures in developing countries. These arguments are embedded in a general structure and classified with respect to their revenue potential and political feasibility. This analysis is closely based on a methodological approach and on the suggestions made by the AGF. The analysis closes with a brief assessment of the possible effects of the activities of AGF on the Government decision-makers. Furthermore the analysis shows how their results may strengthen the mutual trust of the countries in order to contribute to the climate agreement as well as to the national action.
Stochastic models for time series
Doukhan, Paul
2018-01-01
This book presents essential tools for modelling non-linear time series. The first part of the book describes the main standard tools of probability and statistics that directly apply to the time series context to obtain a wide range of modelling possibilities. Functional estimation and bootstrap are discussed, and stationarity is reviewed. The second part describes a number of tools from Gaussian chaos and proposes a tour of linear time series models. It goes on to address nonlinearity from polynomial or chaotic models for which explicit expansions are available, then turns to Markov and non-Markov linear models and discusses Bernoulli shifts time series models. Finally, the volume focuses on the limit theory, starting with the ergodic theorem, which is seen as the first step for statistics of time series. It defines the distributional range to obtain generic tools for limit theory under long or short-range dependences (LRD/SRD) and explains examples of LRD behaviours. More general techniques (central limit ...
Energy Technology Data Exchange (ETDEWEB)
Saam, T.; Habs, M.; Cyran, C.C.; Grimm, J.; Reiser, M.F.; Nikolaou, K. [Klinikum der Ludwig-Maximilians-Universitaet Muenchen, Campus Grosshadern, Institut fuer Klinische Radiologie, Muenchen (Germany); Pfefferkorn, T. [Klinikum der Ludwig-Maximilians-Universitaet Muenchen, Campus Grosshadern, Klinik und Poliklinik fuer Neurologie, Muenchen (Germany); Schueller, U. [Klinikum der Ludwig-Maximilians-Universitaet Muenchen, Campus Grosshadern, Zentrum fuer Neuropathologie, Muenchen (Germany)
2010-10-15
der Gefaesswand zu, allerdings sind nur ausgewaehlte extrakranielle Gefaesse mit ausreichender Aufloesung schallbar. Da den Vaskulitiden primaer Veraenderungen der Gefaesswand zugrunde liegen und die gefundenen luminalen Veraenderungen in der Regel unspezifisch sind und auch bei anderen Erkrankungen auftreten koennen, sind die gebraeuchlichen Verfahren in ihrer Aussagekraft oft limitiert. Mit der hochaufgeloesten MRT der zervikalen und intrakraniellen Gefaesse steht eine viel versprechende neue Methode zur Verfuegung, die die entzuendlich veraenderte Gefaesswand nichtinvasiv und ohne Verwendung ionisierender Strahlen im Detail zu visualisieren vermag. In diesem Beitrag sollen die verwendeten Untersuchungsprotokolle vorgestellt und klinische Bildbeispiele gezeigt werden. Dabei sollen insbesondere die Grossgefaessvaskulitiden und die Vaskulitiden des ZNS behandelt werden. Zudem werden die haeufigsten radiologischen Differenzialdiagnosen demonstriert und andere bildgebende Methoden, wie PET/CT und Ultraschall, die ebenfalls zur Diagnostik der Vaskulitiden eingesetzt werden, diskutiert. (orig.)
Indian Academy of Sciences (India)
Prakash
(American) English two years later (Wollman and Jacob. 1961). The emergence of ... Words have an important role in scientific knowledge. According to the ... we lack the right words to describe them” (quoted in Jacob et al. 1953). There is a ...
Indian Academy of Sciences (India)
Madhu
2006-07-31
Jul 31, 2006 ... By comparison, the fall in temperature with depth (and ... gases and of ballast and buoyancy control. ... to an old-fashioned diving bell, with air that it carries down ..... Working in Ghana, Stride (1955) noticed that adults of.
Diophantine approximation and Dirichlet series
Queffélec, Hervé
2013-01-01
This self-contained book will benefit beginners as well as researchers. It is devoted to Diophantine approximation, the analytic theory of Dirichlet series, and some connections between these two domains, which often occur through the Kronecker approximation theorem. Accordingly, the book is divided into seven chapters, the first three of which present tools from commutative harmonic analysis, including a sharp form of the uncertainty principle, ergodic theory and Diophantine approximation to be used in the sequel. A presentation of continued fraction expansions, including the mixing property of the Gauss map, is given. Chapters four and five present the general theory of Dirichlet series, with classes of examples connected to continued fractions, the famous Bohr point of view, and then the use of random Dirichlet series to produce non-trivial extremal examples, including sharp forms of the Bohnenblust-Hille theorem. Chapter six deals with Hardy-Dirichlet spaces, which are new and useful Banach spaces of anal...
Energy Technology Data Exchange (ETDEWEB)
Blumhardt, R. [BITZER Kuehlmaschinenbau GmbH, Sindelfingen (Germany)
2005-07-01
Small screw-type compressors in a volumetric displacement range from 84 up to 250 m-3 per hour have been offered since more than 22 years as open and half-hermetic machines. At that time new profile geometries and modern manufacturing methods enabled amongst other the smallest gap widths between rotors and housing in this new capacity range for screw-type compressors. This enabled to reach efficiency factors with relatively small rotor diameters, which fall in the range of large industrial compressors. A new half-hermetic construction series and the corresponding open versions with a volumetric displacement of 315 m-3 per hour directly follow the former capacity range and reach up to 410 m-3 per hour. The newly developed rotor profile and the experience gained in the field of compact screw compressor for air conditioning applications were the basis of the new construction. A step-by-step or an infinitely variable valve is used for capacity control, which also takes over the automatic start load alleviation. Economiser operation is possible in the complete full load and partial load range. Important components, which had to be installed externally up to now, were now integrated in the compressor. Thus the expenditure of assembly is reduced and risk of leaks is minimised. Oil separators for plants with single compressors and for combined plants complete the variety of offers. The extended version of the BITZER software enabled the exact design of the compressor for conventional coolants. A new additional module is used for selecting the matching oil separator. (orig.)
Energy Technology Data Exchange (ETDEWEB)
Frauenhofer, Joachim [Siemens, Nuernberg (Germany); Arndt, Tabea; Grundmann, Joern [Siemens, Erlangen (Germany)
2013-07-01
The implementation of superconducting materials in high-power electrical machines results in significant advantages regarding efficiency, size and dynamic behavior when compared to conventional machines. The application of HTS (high-temperature superconductors) in electrical machines allows significantly higher power densities to be achieved for synchronous machines. In order to gain experience with the new technology, Siemens carried out a series of development projects. A 400 kW model motor for the verification of a concept for the new technology was followed by a 4000 kV A generator as highspeed machine - as well as a low-speed 4000 kW propeller motor with high torque. The 4000 kVA generator is still employed to carry out long-term tests and to check components. Superconducting machines have significantly lower weight and envelope dimensions compared to conventional machines, and for this reason alone, they utilize resources better. At the same time, operating losses are slashed to about half and the efficiency increases. Beyond this, they set themselves apart as a result of their special features in operation, such as high overload capability, stiff alternating load behavior and low noise. HTS machines provide significant advantages where the reduction of footprint, weight and losses or the improved dynamic behavior results in significant improvements of the overall system. Propeller motors and generators,for ships, offshore plants, in wind turbine and hydroelectric plants and in large power stations are just some examples. HTS machines can therefore play a significant role when it comes to efficiently using resources and energy as well as reducing the CO{sub 2} emissions.
Volterra Series Based Distortion Effect
DEFF Research Database (Denmark)
Agerkvist, Finn T.
2010-01-01
A large part of the characteristic sound of the electric guitar comes from nonlinearities in the signal path. Such nonlinearities may come from the input- or output-stage of the amplier, which is often equipped with vacuum tubes or a dedicated distortion pedal. In this paper the Volterra series...... expansion for non linear systems is investigated with respect to generating good distortion. The Volterra series allows for unlimited adjustment of the level and frequency dependency of each distortion component. Subjectively relevant ways of linking the dierent orders are discussed....
Connected to TV series: Quantifying series watching engagement.
Tóth-Király, István; Bőthe, Beáta; Tóth-Fáber, Eszter; Hága, Győző; Orosz, Gábor
2017-12-01
Background and aims Television series watching stepped into a new golden age with the appearance of online series. Being highly involved in series could potentially lead to negative outcomes, but the distinction between highly engaged and problematic viewers should be distinguished. As no appropriate measure is available for identifying such differences, a short and valid measure was constructed in a multistudy investigation: the Series Watching Engagement Scale (SWES). Methods In Study 1 (N Sample1 = 740 and N Sample2 = 740), exploratory structural equation modeling and confirmatory factor analysis were used to identify the most important facets of series watching engagement. In Study 2 (N = 944), measurement invariance of the SWES was investigated between males and females. In Study 3 (N = 1,520), latent profile analysis (LPA) was conducted to identify subgroups of viewers. Results Five factors of engagement were identified in Study 1 that are of major relevance: persistence, identification, social interaction, overuse, and self-development. Study 2 supported the high levels of equivalence between males and females. In Study 3, three groups of viewers (low-, medium-, and high-engagement viewers) were identified. The highly engaged at-risk group can be differentiated from the other two along key variables of watching time and personality. Discussion The present findings support the overall validity, reliability, and usefulness of the SWES and the results of the LPA showed that it might be useful to identify at-risk viewers before the development of problematic use.
Energy Technology Data Exchange (ETDEWEB)
Kuschel, N.
2000-07-01
The optimization of structures with respect to cost, weight or performance is a well-known application of the nonlinear optimization. However reliability-based structural optimization has been subject of only very few studies. The approaches suggested up to now have been unsatisfactory regarding general possibility of application or easy handling by user. The objective of this thesis is the development of general approaches to solve both optimization problems, the minimization of cost with respect to constraint reliabilty and the maximization of reliability under cost constraint. The extented approach of an one-level-method will be introduced in detail for the time-invariant problems. Here, the reliability of the sturcture will be analysed in the framework of the First-Order-Reliability-Method (FORM). The use of time-variant reliability analysis is necessary for a realistic modelling of many practical problems. Therefore several generalizations of the new approaches will be derived for the time-variant reliability-based structural optimization. Some important properties of the optimization problems are proved. In addition some interesting extensions of the one-level-method, for example the cost optimization of structural series systems and the cost optimization in the frame of the Second-Order-Reliabiity-Method (SORM), are presented in the thesis. (orig.) [German] Die Optimierung von Tragwerken im Hinblick auf die Kosten, das Gewicht oder die Gestalt ist eine sehr bekannte Anwendung der nichtlinearen Optimierung. Die zuverlaessigkeitsorientierte Strukturoptimierung wurde dagegen weit seltener untersucht. Die bisher vorgeschlagenen Ansaetze koennen bezueglich ihrer allgemeinen Verwendbarkeit oder ihrer nutzerfreundlichen Handhabung nicht befriedigen. Das Ziel der vorliegenden Arbeit ist nun die Entwicklung allgemeiner Ansaetze zur Loesung der beiden Optimierungsprobleme, einer Kostenminimierung unter Zuverlaessigkeitsrestriktionen und einer
Rheumatoid Arthritis Educational Video Series
Full Text Available ... Patients from Johns Hopkins Stategies to Increase your Level of Physical Activity Role of Body Weight in Osteoarthritis Educational Videos for Patients Rheumatoid Arthritis Educational Video Series Psoriatic Arthritis 101 2010 E.S.C.A.P.E. Study Patient Update Transitioning the JRA ...
FOURIER SERIES MODELS THROUGH TRANSFORMATION
African Journals Online (AJOL)
DEPT
monthly temperature data (1996 – 2005) collected from the National Root ... KEY WORDS: Fourier series, square transformation, multiplicative model, ... fluctuations or movements are often periodic(Ekpeyong,2005). .... significant trend or not, if the trend is not significant, the grand mean may be used as an estimate of trend.
van den Akker, R.
2007-01-01
This thesis adresses statistical problems in econometrics. The first part contributes statistical methodology for nonnegative integer-valued time series. The second part of this thesis discusses semiparametric estimation in copula models and develops semiparametric lower bounds for a large class of
Locations in television drama series
DEFF Research Database (Denmark)
Waade, Anne Marit
in the extra bonus material (Gray, 2010; Waade, 2013), and film tours and film apps become part of the television series’ trans-media franchise (Reijnders, 2011; Thompson, 2007). Location has so far been a practical term describing the place where the series is shot. Ellis (1992) used to see location...
Bell numbers, determinants and series
Indian Academy of Sciences (India)
In this article, we study Bell numbers and Uppuluri Carpenter numbers. We obtain various expressions and relations between them. These include polynomial recurrences and expressions as determinants of certain matrices of binomial coefficients. Keywords. p-adic series; Bell numbers. 1. Introduction. Bell numbers, Bn [2] ...
Sums of Generalized Harmonic Series
Indian Academy of Sciences (India)
Home; Journals; Resonance – Journal of Science Education; Volume 20; Issue 9. Sums of Generalized Harmonic Series: For Kids from Five to Fifteen. Zurab Silagadze. General Article Volume 20 Issue 9 September 2015 pp 822-843. Fulltext. Click here to view fulltext PDF. Permanent link:
Teen Addiction. Current Controversies Series.
Winters, Paul A., Ed.
The Current Controversies series explores social, political, and economic controversies that dominate the national and international scenes today from a variety of perspectives. Recent surveys have shown that, after years of decline, drug use among teenagers has increased during the 1990s, and that alcohol and tobacco use have remained…
Lower GI Series (Barium Enema)
... uses x-rays and a chalky liquid called barium to view your large intestine . The barium will make your large intestine more visible on ... single-contrast lower GI series, which uses only barium a double-contrast or air-contrast lower GI ...
Interracial America. Opposing Viewpoints Series.
Szumski, Bonnie, Ed.
Books in the Opposing Viewpoints Series present debates about current issues that can be used to teach critical reading and thinking skills. The varied opinions in each book examine different aspects of a single issue. The topics covered in this volume explore the racial and ethnic tensions that concern many Americans today. The racial divide…
Spectroscopy, Understanding the Atom Series.
Hellman, Hal
This booklet is one of the "Understanding the Atom" Series. The science of spectroscopy is presented by a number of topics dealing with (1) the uses of spectroscopy, (2) its origin and background, (3) the basic optical systems of spectroscopes, spectrometers, and spectrophotometers, (4) the characteristics of wave motion, (5) the…
Directory of Open Access Journals (Sweden)
Mihailović Vojislav
2009-01-01
Full Text Available In 2007 and 2008, the trials of the Department of Variety Protection and Registration of the Ministry of Agriculture, Forestry and Water Management of the Republic of Serbia were carried out on four locations, including three new Novi Sad spring pea line, L-536, L-537 and L-538, and the control cultivar Javor. In average, the grain yield of all three lines was higher in comparison to the control cultivar, with the highest average yield in Partner (2732 kg ha-1. All three cultivars have shown that in favourable years may give grain yields higher than 3500 kg ha-1. The crude protein content ranged from 278.3 g kg-1, in Javor, to 307.0 g kg-1, in Dukat. .
International Work-Conference on Time Series
Pomares, Héctor; Valenzuela, Olga
2017-01-01
This volume of selected and peer-reviewed contributions on the latest developments in time series analysis and forecasting updates the reader on topics such as analysis of irregularly sampled time series, multi-scale analysis of univariate and multivariate time series, linear and non-linear time series models, advanced time series forecasting methods, applications in time series analysis and forecasting, advanced methods and online learning in time series and high-dimensional and complex/big data time series. The contributions were originally presented at the International Work-Conference on Time Series, ITISE 2016, held in Granada, Spain, June 27-29, 2016. The series of ITISE conferences provides a forum for scientists, engineers, educators and students to discuss the latest ideas and implementations in the foundations, theory, models and applications in the field of time series analysis and forecasting. It focuses on interdisciplinary and multidisciplinary rese arch encompassing the disciplines of comput...
Analysis of series resonant converter with series-parallel connection
Lin, Bor-Ren; Huang, Chien-Lan
2011-02-01
In this study, a parallel inductor-inductor-capacitor (LLC) resonant converter series-connected on the primary side and parallel-connected on the secondary side is presented for server power supply systems. Based on series resonant behaviour, the power metal-oxide-semiconductor field-effect transistors are turned on at zero voltage switching and the rectifier diodes are turned off at zero current switching. Thus, the switching losses on the power semiconductors are reduced. In the proposed converter, the primary windings of the two LLC converters are connected in series. Thus, the two converters have the same primary currents to ensure that they can supply the balance load current. On the output side, two LLC converters are connected in parallel to share the load current and to reduce the current stress on the secondary windings and the rectifier diodes. In this article, the principle of operation, steady-state analysis and design considerations of the proposed converter are provided and discussed. Experiments with a laboratory prototype with a 24 V/21 A output for server power supply were performed to verify the effectiveness of the proposed converter.
Summability of alterations of convergent series
Directory of Open Access Journals (Sweden)
T. A. Keagy
1981-01-01
Full Text Available The effect of splitting, rearrangement, and grouping series alterations on the summability of a convergent series by ℓ−ℓ and cs−cs matrix methods is studied. Conditions are determined that guarantee the existence of alterations that are transformed into divergent series and into series with preassigned sums.
Multiple Indicator Stationary Time Series Models.
Sivo, Stephen A.
2001-01-01
Discusses the propriety and practical advantages of specifying multivariate time series models in the context of structural equation modeling for time series and longitudinal panel data. For time series data, the multiple indicator model specification improves on classical time series analysis. For panel data, the multiple indicator model…
Heat recovery system series arrangements
Kauffman, Justin P.; Welch, Andrew M.; Dawson, Gregory R.; Minor, Eric N.
2017-11-14
The present disclosure is directed to heat recovery systems that employ two or more organic Rankine cycle (ORC) units disposed in series. According to certain embodiments, each ORC unit includes an evaporator that heats an organic working fluid, a turbine generator set that expands the working fluid to generate electricity, a condenser that cools the working fluid, and a pump that returns the working fluid to the evaporator. The heating fluid is directed through each evaporator to heat the working fluid circulating within each ORC unit, and the cooling fluid is directed through each condenser to cool the working fluid circulating within each ORC unit. The heating fluid and the cooling fluid flow through the ORC units in series in the same or opposite directions.
Ramanujan summation of divergent series
Candelpergher, Bernard
2017-01-01
The aim of this monograph is to give a detailed exposition of the summation method that Ramanujan uses in Chapter VI of his second Notebook. This method, presented by Ramanujan as an application of the Euler-MacLaurin formula, is here extended using a difference equation in a space of analytic functions. This provides simple proofs of theorems on the summation of some divergent series. Several examples and applications are given. For numerical evaluation, a formula in terms of convergent series is provided by the use of Newton interpolation. The relation with other summation processes such as those of Borel and Euler is also studied. Finally, in the last chapter, a purely algebraic theory is developed that unifies all these summation processes. This monograph is aimed at graduate students and researchers who have a basic knowledge of analytic function theory.
Generating series for GUE correlators
Dubrovin, Boris; Yang, Di
2017-11-01
We extend to the Toda lattice hierarchy the approach of Bertola et al. (Phys D Nonlinear Phenom 327:30-57, 2016; IMRN, 2016) to computation of logarithmic derivatives of tau-functions in terms of the so-called matrix resolvents of the corresponding difference Lax operator. As a particular application we obtain explicit generating series for connected GUE correlators. On this basis an efficient recursive procedure for computing the correlators in full genera is developed.
Chernobyl: A series of mistakes
International Nuclear Information System (INIS)
Brunner, E.; Janssen, K.H.; Sontheimer, M.
1986-01-01
Chernobyl - does it mark the beginning of the end of nuclear energy. Or is it just a spectacular accident as the one at Harrisburg in 1979. Six months after the disaster in the Ukraine released the terrible radiation clouds, the article in hand starts a series intended to draw a balance: deadly experiments in an April night - damage all over Europe that sums up to billions - the Brokdorf nuclear power plant said to be the safest in the world. (orig.) [de
Eisenstein series and string thresholds
International Nuclear Information System (INIS)
Obers, N.A.; Pioline, B.
2000-01-01
We investigate the relevance of Eisenstein series for representing certain G(Z)-invariant string theory amplitudes which receive corrections from BPS states only. G(Z) may stand for any of the mapping class, T-duality and U-duality groups Sl(d,Z), SO(d,d,Z) or E d+1(d+1) (Z) respectively. Using G(Z)-invariant mass formulae, we construct invariant modular functions on the symmetric space K backslash G(R) of non-compact type, with K the maximal compact subgroup of G(R), that generalize the standard non-holomorphic Eisenstein series arising in harmonic analysis on the fundamental domain of the Poincare upper half-plane. Comparing the asymptotics and eigenvalues of the Eisenstein series under second order differential operators with quantities arising in one- and g-loop string amplitudes, we obtain a manifestly T-duality invariant representation of the latter, conjecture their non-perturbative U-duality invariant extension, and analyze the resulting non-perturbative effects. This includes the R 4 and R 4 H -4 g -4 couplings in toroidal compactifications of M-theory to any dimension D≥4 and D≥6 respectively. (orig.)
Hyperreal Numbers for Infinite Divergent Series
Bartlett, Jonathan
2018-01-01
Treating divergent series properly has been an ongoing issue in mathematics. However, many of the problems in divergent series stem from the fact that divergent series were discovered prior to having a number system which could handle them. The infinities that resulted from divergent series led to contradictions within the real number system, but these contradictions are largely alleviated with the hyperreal number system. Hyperreal numbers provide a framework for dealing with divergent serie...
Linking the Negative Binomial and Logarithmic Series Distributions via their Associated Series
SADINLE, MAURICIO
2008-01-01
The negative binomial distribution is associated to the series obtained by taking derivatives of the logarithmic series. Conversely, the logarithmic series distribution is associated to the series found by integrating the series associated to the negative binomial distribution. The parameter of the number of failures of the negative binomial distribution is the number of derivatives needed to obtain the negative binomial series from the logarithmic series. The reasoning in this article could ...
Molecular series-tunneling junctions.
Liao, Kung-Ching; Hsu, Liang-Yan; Bowers, Carleen M; Rabitz, Herschel; Whitesides, George M
2015-05-13
Charge transport through junctions consisting of insulating molecular units is a quantum phenomenon that cannot be described adequately by classical circuit laws. This paper explores tunneling current densities in self-assembled monolayer (SAM)-based junctions with the structure Ag(TS)/O2C-R1-R2-H//Ga2O3/EGaIn, where Ag(TS) is template-stripped silver and EGaIn is the eutectic alloy of gallium and indium; R1 and R2 refer to two classes of insulating molecular units-(CH2)n and (C6H4)m-that are connected in series and have different tunneling decay constants in the Simmons equation. These junctions can be analyzed as a form of series-tunneling junctions based on the observation that permuting the order of R1 and R2 in the junction does not alter the overall rate of charge transport. By using the Ag/O2C interface, this system decouples the highest occupied molecular orbital (HOMO, which is localized on the carboxylate group) from strong interactions with the R1 and R2 units. The differences in rates of tunneling are thus determined by the electronic structure of the groups R1 and R2; these differences are not influenced by the order of R1 and R2 in the SAM. In an electrical potential model that rationalizes this observation, R1 and R2 contribute independently to the height of the barrier. This model explicitly assumes that contributions to rates of tunneling from the Ag(TS)/O2C and H//Ga2O3 interfaces are constant across the series examined. The current density of these series-tunneling junctions can be described by J(V) = J0(V) exp(-β1d1 - β2d2), where J(V) is the current density (A/cm(2)) at applied voltage V and βi and di are the parameters describing the attenuation of the tunneling current through a rectangular tunneling barrier, with width d and a height related to the attenuation factor β.
Application examples of EFPACS series
International Nuclear Information System (INIS)
Tsuchiya, Yasunori; Aoki, Makoto; Yamahata, Noboru
1989-01-01
This paper introduces some application examples of picture archiving and communications system EFPACS series which achieves efficient management of a volume of image data generated in a hospital, and powerfully support image diagnosis using multi-modality. EFPACS can be applied to various objectives of system installation, and can meet the scale of a hospital and the way of image filing. EFPACS has been installed in a middle-scale hospital for image conference, in a general hospital for long-term archiving of MRI data and for referring in the outpatient clinic, in a dental hospital for dental image processing, and so on. (author)
A Course in Time Series Analysis
Peña, Daniel; Tsay, Ruey S
2011-01-01
New statistical methods and future directions of research in time series A Course in Time Series Analysis demonstrates how to build time series models for univariate and multivariate time series data. It brings together material previously available only in the professional literature and presents a unified view of the most advanced procedures available for time series model building. The authors begin with basic concepts in univariate time series, providing an up-to-date presentation of ARIMA models, including the Kalman filter, outlier analysis, automatic methods for building ARIMA models, a
Pointwise convergence of Fourier series
Arias de Reyna, Juan
2002-01-01
This book contains a detailed exposition of Carleson-Hunt theorem following the proof of Carleson: to this day this is the only one giving better bounds. It points out the motivation of every step in the proof. Thus the Carleson-Hunt theorem becomes accessible to any analyst.The book also contains the first detailed exposition of the fine results of Hunt, Sjölin, Soria, etc on the convergence of Fourier Series. Its final chapters present original material. With both Fefferman's proof and the recent one of Lacey and Thiele in print, it becomes more important than ever to understand and compare these two related proofs with that of Carleson and Hunt. These alternative proofs do not yield all the results of the Carleson-Hunt proof. The intention of this monograph is to make Carleson's proof accessible to a wider audience, and to explain its consequences for the pointwise convergence of Fourier series for functions in spaces near $äcal Lü^1$, filling a well-known gap in the literature.
Sequential series for nuclear reactions
International Nuclear Information System (INIS)
Izumo, Ko
1975-01-01
A new time-dependent treatment of nuclear reactions is given, in which the wave function of compound nucleus is expanded by a sequential series of the reaction processes. The wave functions of the sequential series form another complete set of compound nucleus at the limit Δt→0. It is pointed out that the wave function is characterized by the quantities: the number of degrees of freedom of motion n, the period of the motion (Poincare cycle) tsub(n), the delay time t sub(nμ) and the relaxation time tausub(n) to the equilibrium of compound nucleus, instead of the usual quantum number lambda, the energy eigenvalue Esub(lambda) and the total width GAMMAsub(lambda) of resonance levels, respectively. The transition matrix elements and the yields of nuclear reactions also become the functions of time given by the Fourier transform of the usual ones. The Poincare cycles of compound nuclei are compared with the observed correlations among resonance levels, which are about 10 -17 --10 -16 sec for medium and heavy nuclei and about 10 -20 sec for the intermediate resonances. (auth.)
A Time Series Forecasting Method
Directory of Open Access Journals (Sweden)
Wang Zhao-Yu
2017-01-01
Full Text Available This paper proposes a novel time series forecasting method based on a weighted self-constructing clustering technique. The weighted self-constructing clustering processes all the data patterns incrementally. If a data pattern is not similar enough to an existing cluster, it forms a new cluster of its own. However, if a data pattern is similar enough to an existing cluster, it is removed from the cluster it currently belongs to and added to the most similar cluster. During the clustering process, weights are learned for each cluster. Given a series of time-stamped data up to time t, we divide it into a set of training patterns. By using the weighted self-constructing clustering, the training patterns are grouped into a set of clusters. To estimate the value at time t + 1, we find the k nearest neighbors of the input pattern and use these k neighbors to decide the estimation. Experimental results are shown to demonstrate the effectiveness of the proposed approach.
Visits Service Launches New Seminar Series
2001-01-01
The CERN Visits Service is launching a new series of seminars for guides, and they are open to everyone. The series kicks off next week with a talk by Konrad Elsener on the CERN neutrinos to Gran Sasso, CNGS, project.
A Power Series Expansion and Its Applications
Chen, Hongwei
2006-01-01
Using the power series solution of a differential equation and the computation of a parametric integral, two elementary proofs are given for the power series expansion of (arcsin x)[squared], as well as some applications of this expansion.
The analysis of time series: an introduction
National Research Council Canada - National Science Library
Chatfield, Christopher
1989-01-01
.... A variety of practical examples are given to support the theory. The book covers a wide range of time-series topics, including probability models for time series, Box-Jenkins forecasting, spectral analysis, linear systems and system identification...
Prediction and Geometry of Chaotic Time Series
National Research Council Canada - National Science Library
Leonardi, Mary
1997-01-01
This thesis examines the topic of chaotic time series. An overview of chaos, dynamical systems, and traditional approaches to time series analysis is provided, followed by an examination of state space reconstruction...
Global Population Density Grid Time Series Estimates
National Aeronautics and Space Administration — Global Population Density Grid Time Series Estimates provide a back-cast time series of population density grids based on the year 2000 population grid from SEDAC's...
Investment Company Series and Class Information
Securities and Exchange Commission — The Series and Class Report provides basic identification information for all active registered investment company series and classes that have been issued IDs by...
Brand placements in fashion TV series
Fakkert, M.-S.; Voorveld, H.A.M.; van Reijmersdal, E.A.; Banks, I.B.; De Pelsmacker, P.; Okazaki, S.
2015-01-01
Recently Fashion TV series have gained more and more popularity among young women worldwide (Dehnart 2008; Seidman 2010). Fashion TV series are an immensely popular TV genre portraying the world of fashion and the accompanying glamorous lifestyle.
Effective Feature Preprocessing for Time Series Forecasting
DEFF Research Database (Denmark)
Zhao, Junhua; Dong, Zhaoyang; Xu, Zhao
2006-01-01
Time series forecasting is an important area in data mining research. Feature preprocessing techniques have significant influence on forecasting accuracy, therefore are essential in a forecasting model. Although several feature preprocessing techniques have been applied in time series forecasting...... performance in time series forecasting. It is demonstrated in our experiment that, effective feature preprocessing can significantly enhance forecasting accuracy. This research can be a useful guidance for researchers on effectively selecting feature preprocessing techniques and integrating them with time...... series forecasting models....
Pasireotid: Eine neue Therapieoption bei Morbus Cushing
Directory of Open Access Journals (Sweden)
Luger A
2012-01-01
Full Text Available Im Behandlungsalgorithmus des Morbus Cushing war bisher keine zugelassene pharmakologische Behandlungsmöglichkeit verfügbar. Mit dem Multirezeptor-Somatostatinanalogon Pasireotid steht nun mit der im April 2012 erfolgten Zulassung die erste, spezifisch für die Therapie dieses Krankheitsbildes entwickelte Substanz zur Verfügung. Die Studienevidenz belegt eine schnelle und nachhaltige Reduktion der ACTH- und Kortisolproduktion mit klinischer Besserung bei einem Großteil der Patienten.
Neue Werkstoffe über additive Fertigung
Günther, Johannes; Niendorf, Thomas
2016-01-01
Über die additive Fertigung, oftmals bezeichnet als 3D-Druck, lassen sich Bauteile nahezu beliebiger geometrischer Komplexität herstellen. Gleichzeitig lassen die Prozessrandbedingungen die direkte Einstellung der Mikrostruktur in den verwendeten metallischen Werkstoffen zu. Hieraus ergeben sich weitreichende Möglichkeiten bezüglich der Eigenschaftsoptimierung aktueller Hochleistungswerkstoffe.
Zeitungssuche interaktiv: Der neue ZDB-Webkatalog
Directory of Open Access Journals (Sweden)
Jessica Hubrich
2014-12-01
Full Text Available Die Zeitschriftendatenbank (ZDB bietet als weltweit größte Datenbank für fortlaufende Sammelwerke umfangreiche Informationen zu mehr als 60000 Zeitungen, die in deutschen und österreichischen Bibliotheken vorgehalten werden. Im Rahmen eines von der Deutschen Forschungsgemeinschaft (DFG geförderten Projekts soll ein neuer ZDB-Webkatalog entstehen, der bessere Unterstützung für eine Vielzahl von Recherchen bietet als der aktuelle ZDB-OPAC und mittels interaktiver Visualisierungen komplexe Zusammenhänge zwischen verschiedenen Zeitungen sichtbar werden lässt. Dieser Beitrag informiert über das Projekt zur ZDB-Weiterentwicklung und gibt Einblicke in einige zentrale Funktionalitäten des zukünftigen ZDB-Webkatalogs, auf die sich Wissenschaftler/innen, Bibliothekar/innen und Endnutzer/innen 2015 freuen können. The German Union Catalogue of Serials (Zeitschriftendatenbank, ZDB is the world’s largest dedicated database for serials of all kinds. It contains extensive information about more than 60.000 newspapers being held in about 4.400 German and Austrian libraries. In a project funded by the German Research Foundation, a new ZDB web catalogue is being created which will provide better support for a wider range of newspaper search functions than the current ZDB OPAC. Interactive graphic representations allow for intuitive and clear visualisations of complex interconnections between different newspapers. The paper describes the ZDB project and highlights some significant features of the forthcoming ZDB web catalogue which will be available in 2015.
Parnassiana nova : XIII. Vier neue Hybriden
Eisner, C.
1957-01-01
Zu dem Gelingen der nachstehend beschriebenen Kreuzungen haben drei Wiener Entomologen beigetragen, deren Namen ich eigentlich bei der Benennung der Hybriden festzuhalten die Absicht hatte. Da das indessen nach den neuesten Nomenklaturregeln nicht statthaft ist, muss ich mich darauf beschränken zu
Eine neue Tornaria aus der Adria
Stiasny, G.
1928-01-01
In einer kurzen Mitteilung über adriatische Tornarien habe ich (4) vor Jahren beiläufig erwähnt, dass im Plankton des Triester Golfes ausser den relativ grossen Tornarien des Balanoglossus clavigerus noch eine zweite kleine Larvenform vorkommt. Diese kleine Tornaria, über welche ich seinerzeit keine
Neue Indikatoren zur Bestimmung der arithmetischen Regierungskonkordanz
DEFF Research Database (Denmark)
Bochsler, Daniel; Sciarini, Pascal
2006-01-01
auf proportionalität wird regierungskonkordanz zu einem doppelkopf: einerseits inklusivität andererseits proportionalität INTERESSANT Anwendung auf Hypothese, dass hohe Regierungskonkordanz zu häufigeren Nutzung direktdemokratischer Instrumente führt (///ich hätte es eher andersrum vermutet, aber egal...
Why new nuclear weapons?; Wozu neue Kernwaffen?
Energy Technology Data Exchange (ETDEWEB)
Biello, D. [Scientific American, New York, NY (United States)
2008-02-15
For the first time since twenty years the US government intenses to produce an advanced nuclear head for bombs. The project raises many questions taking into account political and martial facts on the globe. (GL)
Women's series: by women, for women?
Kuitert, L.; Spiers, J.
2011-01-01
One of the striking phenomena in the 19th century publishing history is the abundant publication of publisher''s series. This contribution concerns series specifically meant for women. The focus is on Dutch literary series for women, mostly 19th century.
Improving the Instruction of Infinite Series
Lindaman, Brian; Gay, A. Susan
2012-01-01
Calculus instructors struggle to teach infinite series, and students have difficulty understanding series and related concepts. Four instructional strategies, prominently used during the calculus reform movement, were implemented during a 3-week unit on infinite series in one class of second-semester calculus students. A description of each…
Winter Video Series Coming in January | Poster
The Scientific Library’s annual Summer Video Series was so successful that it will be offering a new Winter Video Series beginning in January. For this inaugural event, the staff is showing the eight-part series from National Geographic titled “American Genius.”
The Harmonic Series Diverges Again and Again
Kifowit, Steven J.; Stamps, Terra A.
2006-01-01
The harmonic series is one of the most celebrated infinite series of mathematics. A quick glance at a variety of modern calculus textbooks reveals that there are two very popular proofs of the divergence of the harmonic series. In this article, the authors survey these popular proofs along with many other proofs that are equally simple and…
Seminar series on Safety matters
HSE
2010-01-01
The HSE - Occupational Health & Safety and Environmental Protection - Unit is starting a seminar series on Safety matters. The aim is to invite colleagues from Universities, Industries or Government Agencies to share their experience. The seminars will take place in intervals of several months. Part of the Seminars will be held in the form of a Forum where participants can discuss and share views with persons who manage, teach or research Safety matters elsewhere. You are invited to the first Safety Seminar on 22nd September 2010 at 10h00 in building 40 S2 A1 "Salle Andersson" L’Ecole Polytechnique Fédérale de Lausanne (EPFL) will present the way safety is managed in their research institution. Some aspects of research in physics and chemical laboratories will also be presented. The seminar will be given by Dr Thierry Meyer, Head of OHS at FSB-EPFL and Dr Amela Groso, responsible for the safety of the physics institutes
BWR series pump recirculation system
International Nuclear Information System (INIS)
Dillmann, C.W.
1992-01-01
This patent describes a recirculation system for driving reactor coolant water contained in an annular downcomer defined between a boiling water reactor vessel and a reactor core spaced radially inwardly therefrom. It comprises a plurality of circumferentially spaced second pumps disposed in the downcomer, each including an inlet for receiving from the downcomer a portion of the coolant water as pump inlet flow, and an outlet for discharging the pump inlet flow pressurized in the second pump as pump outlet flow; and means for increasing pressure of the pump inlet flow at the pump inlet including a first pump disposed in series flow with the second pump for first receiving the pump inlet flow from the downcomer and discharging to the second pump inlet flow pressurized in the first pump
Gentile, Andrea
2016-01-01
Un professore di chimica potrebbe davvero fabbricare droga come Walter White in "Breaking Bad"? Tra quanto avremo il teletrasporto di "Star Trek"? E qual è il modo migliore di reagire a un'epidemia zombie come quella di "The Walking Dead"? Si può parlare di scienza anche stando comodamente in poltrona di fronte alla televisione. Le serie tv sono diventate prodotti di culto, e le più celebri sono proprio quelle fantascientifiche, mediche o di investigazione, che al loro interno raccontano molta scienza. Cosa c'è di vero in ciò che mostrano? Dalla nascita del cosmo in "The Big Bang Theory", passando per le fantadiagnosi del "Dr. House", i complotti alieni di "X-Files" e la natura del tempo in "True Detective", Andrea Gentile svela il lato nascosto dei nostri show preferiti, con un linguaggio semplice e spiegazioni alla portata di tutti.
Kapteyn series arising in radiation problems
International Nuclear Information System (INIS)
Lerche, I; Tautz, R C
2008-01-01
In discussing radiation from multiple point charges or magnetic dipoles, moving in circles or ellipses, a variety of Kapteyn series of the second kind arises. Some of the series have been known in closed form for a hundred years or more, others appear not to be available to analytic persuasion. This paper shows how 12 such generic series can be developed to produce either closed analytic expressions or integrals that are not analytically tractable. In addition, the method presented here may be of benefit when one has other Kapteyn series of the second kind to consider, thereby providing an additional reason to consider such series anew
Cuspidal discrete series for projective hyperbolic spaces
DEFF Research Database (Denmark)
Andersen, Nils Byrial; Flensted-Jensen, Mogens
2013-01-01
Abstract. We have in [1] proposed a definition of cusp forms on semisimple symmetric spaces G/H, involving the notion of a Radon transform and a related Abel transform. For the real non-Riemannian hyperbolic spaces, we showed that there exists an infinite number of cuspidal discrete series......, and at most finitely many non-cuspidal discrete series, including in particular the spherical discrete series. For the projective spaces, the spherical discrete series are the only non-cuspidal discrete series. Below, we extend these results to the other hyperbolic spaces, and we also study the question...
Special values of the hypergeometric series
Ebisu, Akihito
2017-01-01
In this paper, the author presents a new method for finding identities for hypergeoemtric series, such as the (Gauss) hypergeometric series, the generalized hypergeometric series and the Appell-Lauricella hypergeometric series. Furthermore, using this method, the author gets identities for the hypergeometric series F(a,b;c;x) and shows that values of F(a,b;c;x) at some points x can be expressed in terms of gamma functions, together with certain elementary functions. The author tabulates the values of F(a,b;c;x) that can be obtained with this method and finds that this set includes almost all previously known values and many previously unknown values.
Kolmogorov Space in Time Series Data
Kanjamapornkul, K.; Pinčák, R.
2016-01-01
We provide the proof that the space of time series data is a Kolmogorov space with $T_{0}$-separation axiom using the loop space of time series data. In our approach we define a cyclic coordinate of intrinsic time scale of time series data after empirical mode decomposition. A spinor field of time series data comes from the rotation of data around price and time axis by defining a new extradimension to time series data. We show that there exist hidden eight dimensions in Kolmogorov space for ...
Time Series Analysis and Forecasting by Example
Bisgaard, Soren
2011-01-01
An intuition-based approach enables you to master time series analysis with ease Time Series Analysis and Forecasting by Example provides the fundamental techniques in time series analysis using various examples. By introducing necessary theory through examples that showcase the discussed topics, the authors successfully help readers develop an intuitive understanding of seemingly complicated time series models and their implications. The book presents methodologies for time series analysis in a simplified, example-based approach. Using graphics, the authors discuss each presented example in
Duality between Time Series and Networks
Campanharo, Andriana S. L. O.; Sirer, M. Irmak; Malmgren, R. Dean; Ramos, Fernando M.; Amaral, Luís A. Nunes.
2011-01-01
Studying the interaction between a system's components and the temporal evolution of the system are two common ways to uncover and characterize its internal workings. Recently, several maps from a time series to a network have been proposed with the intent of using network metrics to characterize time series. Although these maps demonstrate that different time series result in networks with distinct topological properties, it remains unclear how these topological properties relate to the original time series. Here, we propose a map from a time series to a network with an approximate inverse operation, making it possible to use network statistics to characterize time series and time series statistics to characterize networks. As a proof of concept, we generate an ensemble of time series ranging from periodic to random and confirm that application of the proposed map retains much of the information encoded in the original time series (or networks) after application of the map (or its inverse). Our results suggest that network analysis can be used to distinguish different dynamic regimes in time series and, perhaps more importantly, time series analysis can provide a powerful set of tools that augment the traditional network analysis toolkit to quantify networks in new and useful ways. PMID:21858093
A Review of Subsequence Time Series Clustering
Directory of Open Access Journals (Sweden)
Seyedjamal Zolhavarieh
2014-01-01
Full Text Available Clustering of subsequence time series remains an open issue in time series clustering. Subsequence time series clustering is used in different fields, such as e-commerce, outlier detection, speech recognition, biological systems, DNA recognition, and text mining. One of the useful fields in the domain of subsequence time series clustering is pattern recognition. To improve this field, a sequence of time series data is used. This paper reviews some definitions and backgrounds related to subsequence time series clustering. The categorization of the literature reviews is divided into three groups: preproof, interproof, and postproof period. Moreover, various state-of-the-art approaches in performing subsequence time series clustering are discussed under each of the following categories. The strengths and weaknesses of the employed methods are evaluated as potential issues for future studies.
Methods for summing general Kapteyn series
Energy Technology Data Exchange (ETDEWEB)
Tautz, R C [Zentrum fuer Astronomie und Astrophysik, Technische Universitaet Berlin, Hardenbergstrasse 36, D-10623 Berlin (Germany); Lerche, I [Institut fuer Geowissenschaften, Naturwissenschaftliche Fakultaet III, Martin-Luther-Universitaet Halle, D-06099 Halle (Germany); Dominici, D, E-mail: rct@gmx.eu, E-mail: lercheian@yahoo.com, E-mail: dominicd@newpaltz.edu [Department of Mathematics, State University of New York at New Paltz, 1 Hawk Dr, New Paltz, NY 12561-2443 (United States)
2011-09-23
The general features and characteristics of Kapteyn series, which are a special type of series involving the Bessel function, are investigated. For many applications in physics, astrophysics and mathematics, it is crucial to have closed-form expressions in order to determine their functional structure and parametric behavior. The closed-form expressions of Kapteyn series have mostly been limited to special cases, even though there are often similarities in the approaches used to reduce the series to analytically tractable forms. The goal of this paper is to review the previous work in the area and to show that Kapteyn series can be expressed as trigonometric or gamma function series, which can be evaluated in a closed form for specific parameters. Two examples with a similar structure are given, showing the complexity of Kapteyn series. (paper)
A review of subsequence time series clustering.
Zolhavarieh, Seyedjamal; Aghabozorgi, Saeed; Teh, Ying Wah
2014-01-01
Clustering of subsequence time series remains an open issue in time series clustering. Subsequence time series clustering is used in different fields, such as e-commerce, outlier detection, speech recognition, biological systems, DNA recognition, and text mining. One of the useful fields in the domain of subsequence time series clustering is pattern recognition. To improve this field, a sequence of time series data is used. This paper reviews some definitions and backgrounds related to subsequence time series clustering. The categorization of the literature reviews is divided into three groups: preproof, interproof, and postproof period. Moreover, various state-of-the-art approaches in performing subsequence time series clustering are discussed under each of the following categories. The strengths and weaknesses of the employed methods are evaluated as potential issues for future studies.
A Review of Subsequence Time Series Clustering
Teh, Ying Wah
2014-01-01
Clustering of subsequence time series remains an open issue in time series clustering. Subsequence time series clustering is used in different fields, such as e-commerce, outlier detection, speech recognition, biological systems, DNA recognition, and text mining. One of the useful fields in the domain of subsequence time series clustering is pattern recognition. To improve this field, a sequence of time series data is used. This paper reviews some definitions and backgrounds related to subsequence time series clustering. The categorization of the literature reviews is divided into three groups: preproof, interproof, and postproof period. Moreover, various state-of-the-art approaches in performing subsequence time series clustering are discussed under each of the following categories. The strengths and weaknesses of the employed methods are evaluated as potential issues for future studies. PMID:25140332
Triple products of Eisenstein series
Venkatesh, Anil
In this thesis, we construct a Massey triple product on the Deligne cohomology of the modular curve with coefficients in symmetric powers of the standard representation of the modular group. This result is obtained by constructing a Massey triple product on the extension groups in the category of admissible variations of mixed Hodge structure over the modular curve, which induces the desired construction on Deligne cohomology. The result extends Brown's construction of the cup product on Deligne cohomology to a higher cohomological product. Massey triple products on Deligne cohomology have been previously investigated by Deninger, who considered Deligne cohomology with trivial real coefficients. By working over the reals, Deninger was able to compute cohomology exclusively with differential forms. In this work, Deligne cohomology is studied over the rationals, which introduces an obstruction to applying Deninger's results. The obstruction arises from the fact that the integration map from the de Rham complex to the Eilenberg-MacLane complex of the modular group is not an algebra homomorphism. We compute the correction terms of the integration map as regularized iterated integrals of Eisenstein series, and show that these integrals arise in the cup product and Massey triple product on Deligne cohomology.
Pneumatic Variable Series Elastic Actuator.
Zheng, Hao; Wu, Molei; Shen, Xiangrong
2016-08-01
Inspired by human motor control theory, stiffness control is highly effective in manipulation and human-interactive tasks. The implementation of stiffness control in robotic systems, however, has largely been limited to closed-loop control, and suffers from multiple issues such as limited frequency range, potential instability, and lack of contribution to energy efficiency. Variable-stiffness actuator represents a better solution, but the current designs are complex, heavy, and bulky. The approach in this paper seeks to address these issues by using pneumatic actuator as a variable series elastic actuator (VSEA), leveraging the compressibility of the working fluid. In this work, a pneumatic actuator is modeled as an elastic element with controllable stiffness and equilibrium point, both of which are functions of air masses in the two chambers. As such, for the implementation of stiffness control in a robotic system, the desired stiffness/equilibrium point can be converted to the desired chamber air masses, and a predictive pressure control approach is developed to control the timing of valve switching to obtain the desired air mass while minimizing control action. Experimental results showed that the new approach in this paper requires less expensive hardware (on-off valve instead of proportional valve), causes less control action in implementation, and provides good control performance by leveraging the inherent dynamics of the actuator.
[Scimitar syndrome: a case series].
Jaramillo González, Carlos; Karam Bechara, José; Sáenz Gómez, Jessica; Siegert Olivares, Augusto; Jamaica Balderas, Lourdes
Scimitar syndrome is a rare and complex congenital anomaly of the lung with multiple variables and is named for its resemblance to the classical radiological crooked sword. Its defining feature is the anomalous pulmonary drainage. It is associated with various cardiothoracic malformations and a wide spectrum of clinical manifestations. Nine patients diagnosed with scimitar syndrome found in the database of Hospital Infantil de México between 2009 and 2013 were reviewed. Demographic records, clinical status and hemodynamic parameters reported were collected. This case series called attention to certain differences between our group of patients and those reported in the international literature. Patients were predominantly female and were diagnosed between 1 and 20 months of life. All were asymptomatic at the time of the study. Half of the patients had a history of respiratory disease and all patients had with pulmonary hypertension. Surgical management was required in on-third of the patient group. Copyright © 2014 Hospital Infantil de México Federico Gómez. Publicado por Masson Doyma México S.A. All rights reserved.
Energy Technology Data Exchange (ETDEWEB)
Mosymow, Emma
2015-09-11
/ P / O (M: Cr, Mn) durchgefuehrt. Hierbei wurden erstmalig die Phosphate LiCr{sup II}{sub 4}(PO{sub 4}){sub 3}, NaCr{sup II}{sub 4}(PO{sub 4}){sub 3}, Li{sub 5}Cr{sup II}{sub 2}Cr{sup III}(PO{sub 4}){sub 4}, monoklines Li{sub 3}Cr{sub 2}(PO{sub 4}){sub 3}, Cr{sup II}{sub 5}Cr{sup III}{sub 2}(P{sub 2}O{sub 7}){sub 4} und LiMn{sup II}{sub 2}P{sub 3}O{sub 10} erhalten. Ueber deren Synthese, kristallographische Charakterisierung sowie deren spektroskopische und magnetische Eigenschaften berichtet die vorliegende Arbeit. Die Gleichgewichtsuntersuchungen im System Li / Cr / P / O fuehrten zur Aufklaerung zahlreicher Phasenbeziehungen. So wurden statt der kristallchemisch naheliegenden Verbindungen ''LiCrPO{sub 4}'' und ''Li{sub 2}CrP{sub 2}O{sub 7}'' die Koexistenzgebiete LiCr{sub 4}(PO{sub 4}){sub 3} / Li{sub 5}Cr{sub 3}(PO{sub 4}){sub 4} / Cr{sub 2}O{sub 3} / CrP und Li{sub 9}Cr{sub 3}(P{sub 2}O{sub 7}){sub 3}(PO{sub 4}){sub 2} / Li{sub 3}Cr{sub 2}(PO{sub 4}){sub 3} / LiCrP{sub 2}O{sub 7} / CrP beobachtet. Im System Li / Mn / P / O wurde ebenfalls die Koexistenz einiger Gleichgewichtsphasen aufgeklaert, wie die von Lithium-orthophosphat und Lithium-mangan(II)-orthophosphat sowie von Lithium-metaphosphat und Mangan(III)-metaphosphat. Im Weiteren wurde das De-interkalationsverhalten von Silber-Mangan-phosphaten mit der Moeglichkeit zur Darstellung metastabiler Phosphate mit Mangan in Oxidationsstufen hoeher als 3+ untersucht. Hierbei wurde das Vierstoffsystem Ag / Mn / P / O mit Mn(II) und Mn(III) naeher betrachtet. Die Reaktionsbedingungen wurden an jene der Experimente in den entsprechenden Lithium enthaltenden Systemen angepasst. Im Rahmen der Gleichgewichtsuntersuchungen wurden zwei neue Pyrophosphate AgMnP{sub 2}O{sub 7} und Ag{sub 1,6}Mn{sub 3}(P{sub 2}O{sub 7}){sub 2} gefunden und charakterisiert.
Ambulatory percutaneous nephrolithotomy: initial series.
Shahrour, Walid; Andonian, Sero
2010-12-01
To assess the safety and feasibility of ambulatory percutaneous nephrolithotomy (PCNL). PCNL is the gold standard for the management of large renal stones. Although tubeless PCNL has been previously described, no case series have been published of ambulatory PCNL. The criteria for ambulatory PCNL were: single tract, stone-free status documented by flexible nephroscopy, adequate pain control, and satisfactory postoperative hematocrit level and chest radiographic findings. Patient information, including operating room and fluoroscopy times, stone size and Hounsfield units, and number of needle punctures, were collected prospectively. The time spent in the recovery room, in addition to the amount of narcotics used in the recovery room and at home, was documented. Of 10 patients, 8 had nephrostomy tracts established intraoperatively by the urologist and 2 had preoperative nephrostomy tubes placed. The median operating and fluoroscopy time was 83.5 and 4.45 minutes, respectively. The median stone diameter was 20 mm (800 Hounsfield units) in addition to a patient with a staghorn calculus. The patients spent a median of 240 minutes in the recovery room and had received a median of 19.25 mg of morphine equivalents. Only 3 patients (30%) used narcotics at home. No intraoperative complications occurred, and none of the patients required transfusions. Two postoperative complications developed: a deep vein thrombosis requiring outpatient anticoagulation and multiresistant Escherichia coli infection requiring intravenous antibiotics. In highly selected patients, ambulatory PCNL is safe and feasible. More patients are needed to verify the criteria for patients undergoing the ambulatory approach. Copyright © 2010 Elsevier Inc. All rights reserved.
Analysis of Heavy-Tailed Time Series
DEFF Research Database (Denmark)
Xie, Xiaolei
This thesis is about analysis of heavy-tailed time series. We discuss tail properties of real-world equity return series and investigate the possibility that a single tail index is shared by all return series of actively traded equities in a market. Conditions for this hypothesis to be true...... are identified. We study the eigenvalues and eigenvectors of sample covariance and sample auto-covariance matrices of multivariate heavy-tailed time series, and particularly for time series with very high dimensions. Asymptotic approximations of the eigenvalues and eigenvectors of such matrices are found...... and expressed in terms of the parameters of the dependence structure, among others. Furthermore, we study an importance sampling method for estimating rare-event probabilities of multivariate heavy-tailed time series generated by matrix recursion. We show that the proposed algorithm is efficient in the sense...
Visibility graph approach to exchange rate series
Yang, Yue; Wang, Jianbo; Yang, Huijie; Mang, Jingshi
2009-10-01
By means of a visibility graph, we investigate six important exchange rate series. It is found that the series convert into scale-free and hierarchically structured networks. The relationship between the scaling exponents of the degree distributions and the Hurst exponents obeys the analytical prediction for fractal Brownian motions. The visibility graph can be used to obtain reliable values of Hurst exponents of the series. The characteristics are explained by using the multifractal structures of the series. The exchange rate of EURO to Japanese Yen is widely used to evaluate risk and to estimate trends in speculative investments. Interestingly, the hierarchies of the visibility graphs for the exchange rate series of these two currencies are significantly weak compared with that of the other series.
Correlation and multifractality in climatological time series
International Nuclear Information System (INIS)
Pedron, I T
2010-01-01
Climate can be described by statistical analysis of mean values of atmospheric variables over a period. It is possible to detect correlations in climatological time series and to classify its behavior. In this work the Hurst exponent, which can characterize correlation and persistence in time series, is obtained by using the Detrended Fluctuation Analysis (DFA) method. Data series of temperature, precipitation, humidity, solar radiation, wind speed, maximum squall, atmospheric pressure and randomic series are studied. Furthermore, the multifractality of such series is analyzed applying the Multifractal Detrended Fluctuation Analysis (MF-DFA) method. The results indicate presence of correlation (persistent character) in all climatological series and multifractality as well. A larger set of data, and longer, could provide better results indicating the universality of the exponents.
International Work-Conference on Time Series
Pomares, Héctor
2016-01-01
This volume presents selected peer-reviewed contributions from The International Work-Conference on Time Series, ITISE 2015, held in Granada, Spain, July 1-3, 2015. It discusses topics in time series analysis and forecasting, advanced methods and online learning in time series, high-dimensional and complex/big data time series as well as forecasting in real problems. The International Work-Conferences on Time Series (ITISE) provide a forum for scientists, engineers, educators and students to discuss the latest ideas and implementations in the foundations, theory, models and applications in the field of time series analysis and forecasting. It focuses on interdisciplinary and multidisciplinary research encompassing the disciplines of computer science, mathematics, statistics and econometrics.
Algorithms for Calculating Alternating Infinite Series
International Nuclear Information System (INIS)
Garcia, Hector Luna; Garcia, Luz Maria
2015-01-01
This paper are presented novel algorithms for exact limits of a broad class of infinite alternating series. Many of these series are found in physics and other branches of science and their exact values found for us are in complete agreement with the values obtained by other authors. Finally, these simple methods are very powerful in calculating the limits of many series as shown by the examples
Exponential Hilbert series of equivariant embeddings
Johnson, Wayne A.
2018-01-01
In this article, we study properties of the exponential Hilbert series of a $G$-equivariant projective variety, where $G$ is a semisimple, simply-connected complex linear algebraic group. We prove a relationship between the exponential Hilbert series and the degree and dimension of the variety. We then prove a combinatorial identity for the coefficients of the polynomial representing the exponential Hilbert series. This formula is used in examples to prove further combinatorial identities inv...
BRITS: Bidirectional Recurrent Imputation for Time Series
Cao, Wei; Wang, Dong; Li, Jian; Zhou, Hao; Li, Lei; Li, Yitan
2018-01-01
Time series are widely used as signals in many classification/regression tasks. It is ubiquitous that time series contains many missing values. Given multiple correlated time series data, how to fill in missing values and to predict their class labels? Existing imputation methods often impose strong assumptions of the underlying data generating process, such as linear dynamics in the state space. In this paper, we propose BRITS, a novel method based on recurrent neural networks for missing va...
Geometric noise reduction for multivariate time series.
Mera, M Eugenia; Morán, Manuel
2006-03-01
We propose an algorithm for the reduction of observational noise in chaotic multivariate time series. The algorithm is based on a maximum likelihood criterion, and its goal is to reduce the mean distance of the points of the cleaned time series to the attractor. We give evidence of the convergence of the empirical measure associated with the cleaned time series to the underlying invariant measure, implying the possibility to predict the long run behavior of the true dynamics.
Decoding divergent series in nonparaxial optics.
Borghi, Riccardo; Gori, Franco; Guattari, Giorgio; Santarsiero, Massimo
2011-03-15
A theoretical analysis aimed at investigating the divergent character of perturbative series involved in the study of free-space nonparaxial propagation of vectorial optical beams is proposed. Our analysis predicts a factorial divergence for such series and provides a theoretical framework within which the results of recently published numerical experiments concerning nonparaxial propagation of vectorial Gaussian beams find a meaningful interpretation in terms of the decoding operated on such series by the Weniger transformation.
Frontiers in Time Series and Financial Econometrics
Ling, S.; McAleer, M.J.; Tong, H.
2015-01-01
__Abstract__ Two of the fastest growing frontiers in econometrics and quantitative finance are time series and financial econometrics. Significant theoretical contributions to financial econometrics have been made by experts in statistics, econometrics, mathematics, and time series analysis. The purpose of this special issue of the journal on “Frontiers in Time Series and Financial Econometrics” is to highlight several areas of research by leading academics in which novel methods have contrib...
Neural Network Models for Time Series Forecasts
Tim Hill; Marcus O'Connor; William Remus
1996-01-01
Neural networks have been advocated as an alternative to traditional statistical forecasting methods. In the present experiment, time series forecasts produced by neural networks are compared with forecasts from six statistical time series methods generated in a major forecasting competition (Makridakis et al. [Makridakis, S., A. Anderson, R. Carbone, R. Fildes, M. Hibon, R. Lewandowski, J. Newton, E. Parzen, R. Winkler. 1982. The accuracy of extrapolation (time series) methods: Results of a ...
Data mining in time series databases
Kandel, Abraham; Bunke, Horst
2004-01-01
Adding the time dimension to real-world databases produces Time SeriesDatabases (TSDB) and introduces new aspects and difficulties to datamining and knowledge discovery. This book covers the state-of-the-artmethodology for mining time series databases. The novel data miningmethods presented in the book include techniques for efficientsegmentation, indexing, and classification of noisy and dynamic timeseries. A graph-based method for anomaly detection in time series isdescribed and the book also studies the implications of a novel andpotentially useful representation of time series as strings. Theproblem of detecting changes in data mining models that are inducedfrom temporal databases is additionally discussed.
Osseous genioplasty: A case series
Deshpande, Sanjeev N.; Munoli, Amarnath V.
2011-01-01
Introduction: The chin (mentum) is vital to the human facial morphology as it contributes to the facial aesthetics and harmony both on frontal and lateral views. Osseous genioplasty, the alteration of the chin through skeletal modification, can lead to significant enhancement of the overall facial profile. Aim and Study Design: A case series was designed to study the long-term results of osseous genioplasty in Indian patients with regard to patient satisfaction, complications, and long-term stability. Materials and Methods: All subjects who underwent osseous genioplasty either alone or as a component of orthognathic surgery between January 1992 and December 2010, with a minimum follow-up of 2 years, were included. The genioplasty was performed using standard protocols of assessment and execution. Post-operative evaluation included patient satisfaction, complications and radiological evidence of long-term stability. A comprehensive score was formulated for the purpose of the study. Results: Thirty-seven subjects underwent osseous genioplasty with at least 2 years of follow-up in the study period. This included 17 male and 20 female subjects, with a mean age of 22.8 years (15-52 years) and a mean follow-up of 3 years 4 months (2 years to 4 years and 11 months). Nineteen subjects underwent isolated genioplasty while 18 underwent genioplasty as a part of orthognathic surgery. The procedures included advancement (22), pushback (9), side-to-side (4) and vertical reduction (2) genioplasty. Thirty-six subjects (97.3%) were extremely pleased with the results with only one subject expressing reservations, without, however, demanding any further procedure. There were no significant complications. The osteotomised segment was well maintained in its new position with good bony union and minimal resorption. Overall, 35 (94.6%) cases had excellent results and 2 (4.4%) cases had good results, according to the comprehensive score. Conclusions: Osseous genioplasty is a safe and
Osseous genioplasty: A case series
Directory of Open Access Journals (Sweden)
Sanjeev N Deshpande
2011-01-01
Full Text Available Introduction: The chin (mentum is vital to the human facial morphology as it contributes to the facial aesthetics and harmony both on frontal and lateral views. Osseous genioplasty, the alteration of the chin through skeletal modification, can lead to significant enhancement of the overall facial profile. Aim and Study Design: A case series was designed to study the long-term results of osseous genioplasty in Indian patients with regard to patient satisfaction, complications, and long-term stability. Materials and Methods: All subjects who underwent osseous genioplasty either alone or as a component of orthognathic surgery between January 1992 and December 2010, with a minimum follow-up of 2 years, were included. The genioplasty was performed using standard protocols of assessment and execution. Post-operative evaluation included patient satisfaction, complications and radiological evidence of long-term stability. A comprehensive score was formulated for the purpose of the study. Results: Thirty-seven subjects underwent osseous genioplasty with at least 2 years of follow-up in the study period. This included 17 male and 20 female subjects, with a mean age of 22.8 years (15-52 years and a mean follow-up of 3 years 4 months (2 years to 4 years and 11 months. Nineteen subjects underwent isolated genioplasty while 18 underwent genioplasty as a part of orthognathic surgery. The procedures included advancement (22, pushback (9, side-to-side (4 and vertical reduction (2 genioplasty.Thirty-six subjects (97.3% were extremely pleased with the results with only one subject expressing reservations, without, however, demanding any further procedure. There were no significant complications. The osteotomised segment was well maintained in its new position with good bony union and minimal resorption. Overall, 35 (94.6% cases had excellent results and 2 (4.4% cases had good results, according to the comprehensive score. Conclusions: Osseous genioplasty is a safe
Arctic Visiting Speakers Series (AVS)
Fox, S. E.; Griswold, J.
2011-12-01
The Arctic Visiting Speakers (AVS) Series funds researchers and other arctic experts to travel and share their knowledge in communities where they might not otherwise connect. Speakers cover a wide range of arctic research topics and can address a variety of audiences including K-12 students, graduate and undergraduate students, and the general public. Host applications are accepted on an on-going basis, depending on funding availability. Applications need to be submitted at least 1 month prior to the expected tour dates. Interested hosts can choose speakers from an online Speakers Bureau or invite a speaker of their choice. Preference is given to individuals and organizations to host speakers that reach a broad audience and the general public. AVS tours are encouraged to span several days, allowing ample time for interactions with faculty, students, local media, and community members. Applications for both domestic and international visits will be considered. Applications for international visits should involve participation of more than one host organization and must include either a US-based speaker or a US-based organization. This is a small but important program that educates the public about Arctic issues. There have been 27 tours since 2007 that have impacted communities across the globe including: Gatineau, Quebec Canada; St. Petersburg, Russia; Piscataway, New Jersey; Cordova, Alaska; Nuuk, Greenland; Elizabethtown, Pennsylvania; Oslo, Norway; Inari, Finland; Borgarnes, Iceland; San Francisco, California and Wolcott, Vermont to name a few. Tours have included lectures to K-12 schools, college and university students, tribal organizations, Boy Scout troops, science center and museum patrons, and the general public. There are approximately 300 attendees enjoying each AVS tour, roughly 4100 people have been reached since 2007. The expectations for each tour are extremely manageable. Hosts must submit a schedule of events and a tour summary to be posted online
On the analyticity of Laguerre series
International Nuclear Information System (INIS)
Weniger, Ernst Joachim
2008-01-01
The transformation of a Laguerre series f(z) = Σ ∞ n=0 λ (α) n L (α) n (z) to a power series f(z) = Σ ∞ n=0 γ n z n is discussed. Since many nonanalytic functions can be expanded in terms of generalized Laguerre polynomials, success is not guaranteed and such a transformation can easily lead to a mathematically meaningless expansion containing power series coefficients that are infinite in magnitude. Simple sufficient conditions based on the decay rates and sign patterns of the Laguerre series coefficients λ (α) n as n → ∞ can be formulated which guarantee that the resulting power series represents an analytic function. The transformation produces a mathematically meaningful result if the coefficients λ (α) n either decay exponentially or factorially as n → ∞. The situation is much more complicated-but also much more interesting-if the λ (α) n decay only algebraically as n → ∞. If the λ (α) n ultimately have the same sign, the series expansions for the power series coefficients diverge, and the corresponding function is not analytic at the origin. If the λ (α) n ultimately have strictly alternating signs, the series expansions for the power series coefficients still diverge, but are summable to something finite, and the resulting power series represents an analytic function. If algebraically decaying and ultimately alternating Laguerre series coefficients λ (α) n possess sufficiently simple explicit analytical expressions, the summation of the divergent series for the power series coefficients can often be accomplished with the help of analytic continuation formulae for hypergeometric series p+1 F p , but if the λ (α) n have a complicated structure or if only their numerical values are available, numerical summation techniques have to be employed. It is shown that certain nonlinear sequence transformations-in particular the so-called delta transformation (Weniger 1989 Comput. Phys. Rep. 10 189-371 (equation (8.4-4)))-are able to
Energy Technology Data Exchange (ETDEWEB)
Lamprecht, F
1995-05-01
The issues discussed at the First German I.I.R. Energy Congress comprise various aspects of a public supplies system undergoing conversion: changed framework conditions; customer grooming measures in core business areas; diversification into appropriate new fields of business; consequences of these processes for personnel management; and steering and control of the transformation process through efficient Controlling. The congress was organised jointly by the Institute for International Research (I.I.R.) and ``et``. It attracted around 250 participants and was flanked by the proclamation of the 1995 Energy Management Award. (orig.) [Deutsch] Aktuelle Aspekte der Versorgungswirtschaft im Umbruch, von den veraenderten Rahmenbedingungen ueber Kundenbindungsmassnahmen im Stammgeschaeft, Diversifikation in geeignete neue Geschaeftsfelder, die Konsequenzen dieser Prozesse fuer die Personalwirtschaft, bis zur Steuerung und Kontrolle der Transformation durch effizientes Controlling, waren Thema des 1. Deutschen I.I.R.-Energiekongresses, gemeinsam ausgerichtet vom Institute for International Research (I.I.R) und der ``et``. Die Verleihung des Energie Management Award `95 sowie eine Fachausstellung flankierten die von rund 250 Teilnehmern besuchte Veranstaltung. (orig.)
4-H Science Inquiry Video Series
Green, Jeremy W.; Black, Lynette; Willis, Patrick
2013-01-01
Studies support science inquiry as a positive method and approach for 4-H professionals and volunteers to use for teaching science-based practices to youth. The development of a science inquiry video series has yielded positive results as it relates to youth development education and science. The video series highlights how to conduct science-rich…
Health Psychology special series on health disparities
Kazak, A.E.; Bosch, J.; Klonoff, E.A.
2012-01-01
With the initiation of this new ongoing special series in Health Psychology on health disparities, we will publish articles that highlight ways in which health psychology can contribute to understanding and ameliorating these disparities. We welcome articles for this new special series and
Two Classes of Power Series and Applications
Chen, Hongwei
2002-01-01
In this note, using the method of undetermined coefficients, we obtain the power series for exp ( f ( x )) and ln ( f ( x )) by means of a simple recursion. As applications, we show how those power series can be used to reproduce and improve some well-known results in analysis. These results may be used as enrichment material in an advanced…
Cuspidal discrete series for semisimple symmetric spaces
DEFF Research Database (Denmark)
Andersen, Nils Byrial; Flensted-Jensen, Mogens; Schlichtkrull, Henrik
2012-01-01
We propose a notion of cusp forms on semisimple symmetric spaces. We then study the real hyperbolic spaces in detail, and show that there exists both cuspidal and non-cuspidal discrete series. In particular, we show that all the spherical discrete series are non-cuspidal. (C) 2012 Elsevier Inc. All...
SERI Biomass Program. FY 1983 annual report
Energy Technology Data Exchange (ETDEWEB)
Corder, R.E.; Hill, A.M.; Lindsey, H.; Lowenstein, M.Z.; McIntosh, R.P.
1984-02-01
This report summarizes the progress and research accomplishments of the SERI Biomass Program during FY 1983. The SERI Biomass Program consists of three elements: Aquatic Species, Anaerobic Digestion, and Photo/Biological Hydrogen. Each element has been indexed separately. 2 references, 44 figures, 22 tables.
Modelling conditional heteroscedasticity in nonstationary series
Cizek, P.; Cizek, P.; Härdle, W.K.; Weron, R.
2011-01-01
A vast amount of econometrical and statistical research deals with modeling financial time series and their volatility, which measures the dispersion of a series at a point in time (i.e., conditional variance). Although financial markets have been experiencing many shorter and longer periods of
The foundations of modern time series analysis
Mills, Terence C
2011-01-01
This book develops the analysis of Time Series from its formal beginnings in the 1890s through to the publication of Box and Jenkins' watershed publication in 1970, showing how these methods laid the foundations for the modern techniques of Time Series analysis that are in use today.
Forecasting Enrollments with Fuzzy Time Series.
Song, Qiang; Chissom, Brad S.
The concept of fuzzy time series is introduced and used to forecast the enrollment of a university. Fuzzy time series, an aspect of fuzzy set theory, forecasts enrollment using a first-order time-invariant model. To evaluate the model, the conventional linear regression technique is applied and the predicted values obtained are compared to the…
Reprint Series: Geometric Constructions. RS-10.
Schaaf, William L., Ed.
This is one in a series of SMSG supplementary and enrichment pamphlets for high school students. The series makes available expository articles which appeared in a variety of mathematical periodicals. Topics covered include: (1) Euclidean constructions; (2) the geometry of the fixed compass; (3) certain topics related to constructions with…
Power Series Solution to the Pendulum Equation
Benacka, Jan
2009-01-01
This note gives a power series solution to the pendulum equation that enables to investigate the system in an analytical way only, i.e. to avoid numeric methods. A method of determining the number of the terms for getting a required relative error is presented that uses bigger and lesser geometric series. The solution is suitable for modelling the…
Modeling Time Series Data for Supervised Learning
Baydogan, Mustafa Gokce
2012-01-01
Temporal data are increasingly prevalent and important in analytics. Time series (TS) data are chronological sequences of observations and an important class of temporal data. Fields such as medicine, finance, learning science and multimedia naturally generate TS data. Each series provide a high-dimensional data vector that challenges the learning…
Lag space estimation in time series modelling
DEFF Research Database (Denmark)
Goutte, Cyril
1997-01-01
The purpose of this article is to investigate some techniques for finding the relevant lag-space, i.e. input information, for time series modelling. This is an important aspect of time series modelling, as it conditions the design of the model through the regressor vector a.k.a. the input layer...
Euler Polynomials, Fourier Series and Zeta Numbers
DEFF Research Database (Denmark)
Scheufens, Ernst E
2012-01-01
Fourier series for Euler polynomials is used to obtain information about values of the Riemann zeta function for integer arguments greater than one. If the argument is even we recover the well-known exact values, if the argument is odd we find integral representations and rapidly convergent series....
Series expansion of the modified Einstein Procedure
Seema Chandrakant Shah-Fairbank
2009-01-01
This study examines calculating total sediment discharge based on the Modified Einstein Procedure (MEP). A new procedure based on the Series Expansion of the Modified Einstein Procedure (SEMEP) has been developed. This procedure contains four main modifications to MEP. First, SEMEP solves the Einstein integrals quickly and accurately based on a series expansion. Next,...
Statistical criteria for characterizing irradiance time series.
Energy Technology Data Exchange (ETDEWEB)
Stein, Joshua S.; Ellis, Abraham; Hansen, Clifford W.
2010-10-01
We propose and examine several statistical criteria for characterizing time series of solar irradiance. Time series of irradiance are used in analyses that seek to quantify the performance of photovoltaic (PV) power systems over time. Time series of irradiance are either measured or are simulated using models. Simulations of irradiance are often calibrated to or generated from statistics for observed irradiance and simulations are validated by comparing the simulation output to the observed irradiance. Criteria used in this comparison should derive from the context of the analyses in which the simulated irradiance is to be used. We examine three statistics that characterize time series and their use as criteria for comparing time series. We demonstrate these statistics using observed irradiance data recorded in August 2007 in Las Vegas, Nevada, and in June 2009 in Albuquerque, New Mexico.
Homogenising time series: beliefs, dogmas and facts
Domonkos, P.
2011-06-01
In the recent decades various homogenisation methods have been developed, but the real effects of their application on time series are still not known sufficiently. The ongoing COST action HOME (COST ES0601) is devoted to reveal the real impacts of homogenisation methods more detailed and with higher confidence than earlier. As a part of the COST activity, a benchmark dataset was built whose characteristics approach well the characteristics of real networks of observed time series. This dataset offers much better opportunity than ever before to test the wide variety of homogenisation methods, and analyse the real effects of selected theoretical recommendations. Empirical results show that real observed time series usually include several inhomogeneities of different sizes. Small inhomogeneities often have similar statistical characteristics than natural changes caused by climatic variability, thus the pure application of the classic theory that change-points of observed time series can be found and corrected one-by-one is impossible. However, after homogenisation the linear trends, seasonal changes and long-term fluctuations of time series are usually much closer to the reality than in raw time series. Some problems around detecting multiple structures of inhomogeneities, as well as that of time series comparisons within homogenisation procedures are discussed briefly in the study.
Visibility Graph Based Time Series Analysis.
Stephen, Mutua; Gu, Changgui; Yang, Huijie
2015-01-01
Network based time series analysis has made considerable achievements in the recent years. By mapping mono/multivariate time series into networks, one can investigate both it's microscopic and macroscopic behaviors. However, most proposed approaches lead to the construction of static networks consequently providing limited information on evolutionary behaviors. In the present paper we propose a method called visibility graph based time series analysis, in which series segments are mapped to visibility graphs as being descriptions of the corresponding states and the successively occurring states are linked. This procedure converts a time series to a temporal network and at the same time a network of networks. Findings from empirical records for stock markets in USA (S&P500 and Nasdaq) and artificial series generated by means of fractional Gaussian motions show that the method can provide us rich information benefiting short-term and long-term predictions. Theoretically, we propose a method to investigate time series from the viewpoint of network of networks.
Network structure of multivariate time series.
Lacasa, Lucas; Nicosia, Vincenzo; Latora, Vito
2015-10-21
Our understanding of a variety of phenomena in physics, biology and economics crucially depends on the analysis of multivariate time series. While a wide range tools and techniques for time series analysis already exist, the increasing availability of massive data structures calls for new approaches for multidimensional signal processing. We present here a non-parametric method to analyse multivariate time series, based on the mapping of a multidimensional time series into a multilayer network, which allows to extract information on a high dimensional dynamical system through the analysis of the structure of the associated multiplex network. The method is simple to implement, general, scalable, does not require ad hoc phase space partitioning, and is thus suitable for the analysis of large, heterogeneous and non-stationary time series. We show that simple structural descriptors of the associated multiplex networks allow to extract and quantify nontrivial properties of coupled chaotic maps, including the transition between different dynamical phases and the onset of various types of synchronization. As a concrete example we then study financial time series, showing that a multiplex network analysis can efficiently discriminate crises from periods of financial stability, where standard methods based on time-series symbolization often fail.
Visibility Graph Based Time Series Analysis.
Directory of Open Access Journals (Sweden)
Mutua Stephen
Full Text Available Network based time series analysis has made considerable achievements in the recent years. By mapping mono/multivariate time series into networks, one can investigate both it's microscopic and macroscopic behaviors. However, most proposed approaches lead to the construction of static networks consequently providing limited information on evolutionary behaviors. In the present paper we propose a method called visibility graph based time series analysis, in which series segments are mapped to visibility graphs as being descriptions of the corresponding states and the successively occurring states are linked. This procedure converts a time series to a temporal network and at the same time a network of networks. Findings from empirical records for stock markets in USA (S&P500 and Nasdaq and artificial series generated by means of fractional Gaussian motions show that the method can provide us rich information benefiting short-term and long-term predictions. Theoretically, we propose a method to investigate time series from the viewpoint of network of networks.
Allan deviation analysis of financial return series
Hernández-Pérez, R.
2012-05-01
We perform a scaling analysis for the return series of different financial assets applying the Allan deviation (ADEV), which is used in the time and frequency metrology to characterize quantitatively the stability of frequency standards since it has demonstrated to be a robust quantity to analyze fluctuations of non-stationary time series for different observation intervals. The data used are opening price daily series for assets from different markets during a time span of around ten years. We found that the ADEV results for the return series at short scales resemble those expected for an uncorrelated series, consistent with the efficient market hypothesis. On the other hand, the ADEV results for absolute return series for short scales (first one or two decades) decrease following approximately a scaling relation up to a point that is different for almost each asset, after which the ADEV deviates from scaling, which suggests that the presence of clustering, long-range dependence and non-stationarity signatures in the series drive the results for large observation intervals.
Quantum Dilogarithms and Partition q-Series
Kato, Akishi; Terashima, Yuji
2015-08-01
In our previous work (Kato and Terashima, Commun Math Phys. arXiv:1403.6569, 2014), we introduced the partition q-series for mutation loop γ—a loop in exchange quiver. In this paper, we show that for a certain class of mutation sequences, called reddening sequences, the graded version of partition q-series essentially coincides with the ordered product of quantum dilogarithm associated with each mutation; the partition q-series provides a state-sum description of combinatorial Donaldson-Thomas invariants introduced by Keller.
Case Series Investigations in Cognitive Neuropsychology
Schwartz, Myrna F.; Dell, Gary S.
2011-01-01
Case series methodology involves the systematic assessment of a sample of related patients, with the goal of understanding how and why they differ from one another. This method has become increasingly important in cognitive neuropsychology, which has long been identified with single-subject research. We review case series studies dealing with impaired semantic memory, reading, and language production, and draw attention to the affinity of this methodology for testing theories that are expressed as computational models and for addressing questions about neuroanatomy. It is concluded that case series methods usefully complement single-subject techniques. PMID:21714756
Time series modeling, computation, and inference
Prado, Raquel
2010-01-01
The authors systematically develop a state-of-the-art analysis and modeling of time series. … this book is well organized and well written. The authors present various statistical models for engineers to solve problems in time series analysis. Readers no doubt will learn state-of-the-art techniques from this book.-Hsun-Hsien Chang, Computing Reviews, March 2012My favorite chapters were on dynamic linear models and vector AR and vector ARMA models.-William Seaver, Technometrics, August 2011… a very modern entry to the field of time-series modelling, with a rich reference list of the current lit
Time Series Analysis Forecasting and Control
Box, George E P; Reinsel, Gregory C
2011-01-01
A modernized new edition of one of the most trusted books on time series analysis. Since publication of the first edition in 1970, Time Series Analysis has served as one of the most influential and prominent works on the subject. This new edition maintains its balanced presentation of the tools for modeling and analyzing time series and also introduces the latest developments that have occurred n the field over the past decade through applications from areas such as business, finance, and engineering. The Fourth Edition provides a clearly written exploration of the key methods for building, cl
New customers require new distribution pathways; Neue Kunden erfordern neue Vertriebswege
Energy Technology Data Exchange (ETDEWEB)
Pohl, D.
2007-07-01
Solar companies are working on cooperations with architects and with planners of prefabricated buildings in order to enhance their sales, while fitters do not feel sufficiently supported in marketing. Only few of them make use of the advertising media that are available. (orig.)
App. 1. Fourier series and Fourier transform
International Nuclear Information System (INIS)
Anon.
1977-01-01
Definitions, formulas and practical properties in quantum mechanics are presented: Fourier series (development of periodic function, Bessel-Parseval equality); Fourier transform (Parseval-Plancherel formula, Fourier transform in three-dimensional space) [fr
Detecting nonlinear structure in time series
International Nuclear Information System (INIS)
Theiler, J.
1991-01-01
We describe an approach for evaluating the statistical significance of evidence for nonlinearity in a time series. The formal application of our method requires the careful statement of a null hypothesis which characterizes a candidate linear process, the generation of an ensemble of ''surrogate'' data sets which are similar to the original time series but consistent with the null hypothesis, and the computation of a discriminating statistic for the original and for each of the surrogate data sets. The idea is to test the original time series against the null hypothesis by checking whether the discriminating statistic computed for the original time series differs significantly from the statistics computed for each of the surrogate sets. While some data sets very cleanly exhibit low-dimensional chaos, there are many cases where the evidence is sketchy and difficult to evaluate. We hope to provide a framework within which such claims of nonlinearity can be evaluated. 5 refs., 4 figs
Nonparametric factor analysis of time series
Rodríguez-Poo, Juan M.; Linton, Oliver Bruce
1998-01-01
We introduce a nonparametric smoothing procedure for nonparametric factor analaysis of multivariate time series. The asymptotic properties of the proposed procedures are derived. We present an application based on the residuals from the Fair macromodel.
WDM Research Series: Working Paper No. 2
International Development Research Centre (IDRC) Digital Library (Canada)
IDRC CRDI
The other three papers of the Series focus on the issues of institutional structures ... Any approach that relates WDM to poverty and equity requires a set of working ..... If local irrigation system operation and maintenance investments and.
Applied time series analysis and innovative computing
Ao, Sio-Iong
2010-01-01
This text is a systematic, state-of-the-art introduction to the use of innovative computing paradigms as an investigative tool for applications in time series analysis. It includes frontier case studies based on recent research.
Normed algebras and the geometric series test
Directory of Open Access Journals (Sweden)
Robert Kantrowitz
2017-11-01
Full Text Available The purpose of this article is to survey a class of normed algebras that share many central features of Banach algebras, save for completeness. The likeness of these algebras to Banach algebras derives from the fact that the geometric series test is valid, whereas the lack of completeness points to the failure of the absolute convergence test for series in the algebra. Our main result is a compendium of conditions that are all equivalent to the validity of the geometric series test for commutative unital normed algebras. Several examples in the final section showcase some incomplete normed algebras for which the geometric series test is valid, and still others for which it is not.
Measuring multiscaling in financial time-series
International Nuclear Information System (INIS)
Buonocore, R.J.; Aste, T.; Di Matteo, T.
2016-01-01
We discuss the origin of multiscaling in financial time-series and investigate how to best quantify it. Our methodology consists in separating the different sources of measured multifractality by analyzing the multi/uni-scaling behavior of synthetic time-series with known properties. We use the results from the synthetic time-series to interpret the measure of multifractality of real log-returns time-series. The main finding is that the aggregation horizon of the returns can introduce a strong bias effect on the measure of multifractality. This effect can become especially important when returns distributions have power law tails with exponents in the range (2, 5). We discuss the right aggregation horizon to mitigate this bias.
Data Mining Smart Energy Time Series
Directory of Open Access Journals (Sweden)
Janina POPEANGA
2015-07-01
Full Text Available With the advent of smart metering technology the amount of energy data will increase significantly and utilities industry will have to face another big challenge - to find relationships within time-series data and even more - to analyze such huge numbers of time series to find useful patterns and trends with fast or even real-time response. This study makes a small review of the literature in the field, trying to demonstrate how essential is the application of data mining techniques in the time series to make the best use of this large quantity of data, despite all the difficulties. Also, the most important Time Series Data Mining techniques are presented, highlighting their applicability in the energy domain.
Complex network approach to fractional time series
Energy Technology Data Exchange (ETDEWEB)
Manshour, Pouya [Physics Department, Persian Gulf University, Bushehr 75169 (Iran, Islamic Republic of)
2015-10-15
In order to extract correlation information inherited in stochastic time series, the visibility graph algorithm has been recently proposed, by which a time series can be mapped onto a complex network. We demonstrate that the visibility algorithm is not an appropriate one to study the correlation aspects of a time series. We then employ the horizontal visibility algorithm, as a much simpler one, to map fractional processes onto complex networks. The degree distributions are shown to have parabolic exponential forms with Hurst dependent fitting parameter. Further, we take into account other topological properties such as maximum eigenvalue of the adjacency matrix and the degree assortativity, and show that such topological quantities can also be used to predict the Hurst exponent, with an exception for anti-persistent fractional Gaussian noises. To solve this problem, we take into account the Spearman correlation coefficient between nodes' degrees and their corresponding data values in the original time series.
An introduction to Fourier series and integrals
Seeley, Robert T
2006-01-01
This compact guide emphasizes the relationship between physics and mathematics, introducing Fourier series in the way that Fourier himself used them: as solutions of the heat equation in a disk. 1966 edition.
Entropic Analysis of Electromyography Time Series
Kaufman, Miron; Sung, Paul
2005-03-01
We are in the process of assessing the effectiveness of fractal and entropic measures for the diagnostic of low back pain from surface electromyography (EMG) time series. Surface electromyography (EMG) is used to assess patients with low back pain. In a typical EMG measurement, the voltage is measured every millisecond. We observed back muscle fatiguing during one minute, which results in a time series with 60,000 entries. We characterize the complexity of time series by computing the Shannon entropy time dependence. The analysis of the time series from different relevant muscles from healthy and low back pain (LBP) individuals provides evidence that the level of variability of back muscle activities is much larger for healthy individuals than for individuals with LBP. In general the time dependence of the entropy shows a crossover from a diffusive regime to a regime characterized by long time correlations (self organization) at about 0.01s.
Time series prediction: statistical and neural techniques
Zahirniak, Daniel R.; DeSimio, Martin P.
1996-03-01
In this paper we compare the performance of nonlinear neural network techniques to those of linear filtering techniques in the prediction of time series. Specifically, we compare the results of using the nonlinear systems, known as multilayer perceptron and radial basis function neural networks, with the results obtained using the conventional linear Wiener filter, Kalman filter and Widrow-Hoff adaptive filter in predicting future values of stationary and non- stationary time series. Our results indicate the performance of each type of system is heavily dependent upon the form of the time series being predicted and the size of the system used. In particular, the linear filters perform adequately for linear or near linear processes while the nonlinear systems perform better for nonlinear processes. Since the linear systems take much less time to be developed, they should be tried prior to using the nonlinear systems when the linearity properties of the time series process are unknown.
Public invited to Appalachian Studies Film Series
Elliott, Jean
2004-01-01
The Appalachian Studies Program at Virginia Tech is hosting a series of notable artistic and documentary films. The films deal with themes or issues covered in Appalachian Studies courses and are organized historically, touching upon issues common to all Appalachians.
Turbulencelike Behavior of Seismic Time Series
International Nuclear Information System (INIS)
Manshour, P.; Saberi, S.; Sahimi, Muhammad; Peinke, J.; Pacheco, Amalio F.; Rahimi Tabar, M. Reza
2009-01-01
We report on a stochastic analysis of Earth's vertical velocity time series by using methods originally developed for complex hierarchical systems and, in particular, for turbulent flows. Analysis of the fluctuations of the detrended increments of the series reveals a pronounced transition in their probability density function from Gaussian to non-Gaussian. The transition occurs 5-10 hours prior to a moderate or large earthquake, hence representing a new and reliable precursor for detecting such earthquakes
Jorgenson, Jay
2005-01-01
Posn(R) and Eisenstein Series provides an introduction, requiring minimal prerequisites, to the analysis on symmetric spaces of positive definite real matrices as well as quotients of this space by the unimodular group of integral matrices. The approach is presented in very classical terms and includes material on special functions, notably gamma and Bessel functions, and focuses on certain mathematical aspects of Eisenstein series.
Genealogical series method. Hyperpolar points screen effect
International Nuclear Information System (INIS)
Gorbatov, A.M.
1991-01-01
The fundamental values of the genealogical series method -the genealogical integrals (sandwiches) have been investigated. The hyperpolar points screen effect has been found. It allows one to calculate the sandwiches for the Fermion systems with large number of particles and to ascertain the validity of the iterated-potential method as well. For the first time the genealogical-series method has been realized numerically for the central spin-independent potential
Index to the Understanding the Atom Series
Energy Technology Data Exchange (ETDEWEB)
None
1978-01-01
The U. S. Atomic Energy Commission publishes the Understanding the Atom Series of educational booklets for high school science students and their teachers. This series explains many aspects of nuclear science including its history and applications. Because these 51 booklets cover such a variety of scientific fields, this index was prepared to help the reader find quickly those booklets that contain the information he needs.
Global impact of Danish drama series
DEFF Research Database (Denmark)
Jensen, Pia Majbritt
2016-01-01
In recent years Danish TV series have experienced a global export boom. This article maps the regional and global export patterns over the last fifteen years in order to assess the international impact of Danish TV drama.......In recent years Danish TV series have experienced a global export boom. This article maps the regional and global export patterns over the last fifteen years in order to assess the international impact of Danish TV drama....
Harry Potter book series - trivial or not?
Directory of Open Access Journals (Sweden)
Brigita Pavšič
2006-12-01
Full Text Available The article explores the extcnt to which the features of trivial literature appear in the Harry Potter series by J. K. Rowling.This is done in comparison with another popular children's series, The Famous Five by Enid Blyton, which was analysed by Igor Saksida. The main focus of the analysis is on the schematic representation of plot, characters and the exotic nature of the setting and time of the stories.
Energy Technology Data Exchange (ETDEWEB)
Schwarz, M.A.; Behnke, K.; Klemm, H. [MAN TURBO AG, Oberhausen (Germany)
2008-07-01
Currently it can be observed that in the case of generator drives as well as 'mechanical drives' smaller units are demanded with a steam turbine capacity of up to 150 MW and clearly higher efficiencies. MAN TURBO is meeting the challenge through realisation of a comprehensive development project aiming at the extension of the application range of the current steam turbine series.
Multivariate Time Series Decomposition into Oscillation Components.
Matsuda, Takeru; Komaki, Fumiyasu
2017-08-01
Many time series are considered to be a superposition of several oscillation components. We have proposed a method for decomposing univariate time series into oscillation components and estimating their phases (Matsuda & Komaki, 2017 ). In this study, we extend that method to multivariate time series. We assume that several oscillators underlie the given multivariate time series and that each variable corresponds to a superposition of the projections of the oscillators. Thus, the oscillators superpose on each variable with amplitude and phase modulation. Based on this idea, we develop gaussian linear state-space models and use them to decompose the given multivariate time series. The model parameters are estimated from data using the empirical Bayes method, and the number of oscillators is determined using the Akaike information criterion. Therefore, the proposed method extracts underlying oscillators in a data-driven manner and enables investigation of phase dynamics in a given multivariate time series. Numerical results show the effectiveness of the proposed method. From monthly mean north-south sunspot number data, the proposed method reveals an interesting phase relationship.
[Deficiency, disability, neurology and television series].
Collado-Vázquez, Susana; Martínez-Martínez, Ariadna; Cano-de-la-Cuerda, Roberto
2015-06-01
The portrayal of neurological disability and deficiency on television has not always been approached in the same way, but has instead tended to reflect the standpoint taken by society with regard to these issues and how they are dealt with according to the prevailing conceptions and values at each particular time. To address the appearance of neurological pathologies in television series and to ponder on the image they have in such contexts. Deficiency and disability of neurological origin have often been depicted on television in series, telefilms and documentaries, and in a wide variety of ways. Here we examine different television series and how they have dealt with neurological pathology, its diagnosis and its treatment, as well as the figure of the healthcare professional and social-familial adaptation. Examples cited include series such as House MD, Glee, American Horror Story, Homeland or Game of Thrones. Television series are a useful tool for making some neurological pathologies better known to the public and for dispelling the myths surrounding others, provided that the pathologies are dealt with in a realistic manner, which is not always the case. More care should be taken with regard to the way in which health professionals are portrayed in television series, as it is not always done correctly and may mislead viewers, who take what they see on the TV as being real.
Fragrance series testing in eyelid dermatitis.
Wenk, Kurt S; Ehrlich, Alison
2012-01-01
Allergic contact dermatitis is considered one of the most common causes of eyelid dermatitis. In addition to metals and topical antibiotics, fragrances have emerged as a leading source of contact allergy for individuals with this condition. The objective of this study was to determine the added benefit of including a fragrance tray when patch testing patients presenting with eyelid dermatitis. During a 4.5-year period, all patients with suspected allergic contact dermatitis involving the eyelids were patch tested with both standard and fragrance trays. One hundred consecutive patients with eyelid dermatitis were patch tested. Of these patients, 42 (42%) tested positive for 1 or more allergens within the fragrance series. Of these patients, 15 (36%) had no fragrance markers detected on the standard series, and these allergens would therefore have been missed had fragrance series testing not been performed. Overall, fragrance markers within the standard series detected 73.2% (41/56) of cases of fragrance allergy. Our results suggest that there may be a significant benefit to fragrance series testing in patients with eyelid dermatitis. Fragrance tray inclusion in this population may identify additional cases of fragrance allergy that are missed by the standard series.
Detecting chaos in irregularly sampled time series.
Kulp, C W
2013-09-01
Recently, Wiebe and Virgin [Chaos 22, 013136 (2012)] developed an algorithm which detects chaos by analyzing a time series' power spectrum which is computed using the Discrete Fourier Transform (DFT). Their algorithm, like other time series characterization algorithms, requires that the time series be regularly sampled. Real-world data, however, are often irregularly sampled, thus, making the detection of chaotic behavior difficult or impossible with those methods. In this paper, a characterization algorithm is presented, which effectively detects chaos in irregularly sampled time series. The work presented here is a modification of Wiebe and Virgin's algorithm and uses the Lomb-Scargle Periodogram (LSP) to compute a series' power spectrum instead of the DFT. The DFT is not appropriate for irregularly sampled time series. However, the LSP is capable of computing the frequency content of irregularly sampled data. Furthermore, a new method of analyzing the power spectrum is developed, which can be useful for differentiating between chaotic and non-chaotic behavior. The new characterization algorithm is successfully applied to irregularly sampled data generated by a model as well as data consisting of observations of variable stars.
Highly comparative time-series analysis: the empirical structure of time series and their methods.
Fulcher, Ben D; Little, Max A; Jones, Nick S
2013-06-06
The process of collecting and organizing sets of observations represents a common theme throughout the history of science. However, despite the ubiquity of scientists measuring, recording and analysing the dynamics of different processes, an extensive organization of scientific time-series data and analysis methods has never been performed. Addressing this, annotated collections of over 35 000 real-world and model-generated time series, and over 9000 time-series analysis algorithms are analysed in this work. We introduce reduced representations of both time series, in terms of their properties measured by diverse scientific methods, and of time-series analysis methods, in terms of their behaviour on empirical time series, and use them to organize these interdisciplinary resources. This new approach to comparing across diverse scientific data and methods allows us to organize time-series datasets automatically according to their properties, retrieve alternatives to particular analysis methods developed in other scientific disciplines and automate the selection of useful methods for time-series classification and regression tasks. The broad scientific utility of these tools is demonstrated on datasets of electroencephalograms, self-affine time series, heartbeat intervals, speech signals and others, in each case contributing novel analysis techniques to the existing literature. Highly comparative techniques that compare across an interdisciplinary literature can thus be used to guide more focused research in time-series analysis for applications across the scientific disciplines.
Finding Sums for an Infinite Class of Alternating Series
Chen, Zhibo; Wei, Sheng; Xiao, Xuerong
2012-01-01
Calculus II students know that many alternating series are convergent by the Alternating Series Test. However, they know few alternating series (except geometric series and some trivial ones) for which they can find the sum. In this article, we present a method that enables the students to find sums for infinitely many alternating series in the…
Balser, Werner
1994-01-01
Multisummability is a method which, for certain formal power series with radius of convergence equal to zero, produces an analytic function having the formal series as its asymptotic expansion. This book presents the theory of multisummabi- lity, and as an application, contains a proof of the fact that all formal power series solutions of non-linear meromorphic ODE are multisummable. It will be of use to graduate students and researchers in mathematics and theoretical physics, and especially to those who encounter formal power series to (physical) equations with rapidly, but regularly, growing coefficients.
Layered Ensemble Architecture for Time Series Forecasting.
Rahman, Md Mustafizur; Islam, Md Monirul; Murase, Kazuyuki; Yao, Xin
2016-01-01
Time series forecasting (TSF) has been widely used in many application areas such as science, engineering, and finance. The phenomena generating time series are usually unknown and information available for forecasting is only limited to the past values of the series. It is, therefore, necessary to use an appropriate number of past values, termed lag, for forecasting. This paper proposes a layered ensemble architecture (LEA) for TSF problems. Our LEA consists of two layers, each of which uses an ensemble of multilayer perceptron (MLP) networks. While the first ensemble layer tries to find an appropriate lag, the second ensemble layer employs the obtained lag for forecasting. Unlike most previous work on TSF, the proposed architecture considers both accuracy and diversity of the individual networks in constructing an ensemble. LEA trains different networks in the ensemble by using different training sets with an aim of maintaining diversity among the networks. However, it uses the appropriate lag and combines the best trained networks to construct the ensemble. This indicates LEAs emphasis on accuracy of the networks. The proposed architecture has been tested extensively on time series data of neural network (NN)3 and NN5 competitions. It has also been tested on several standard benchmark time series data. In terms of forecasting accuracy, our experimental results have revealed clearly that LEA is better than other ensemble and nonensemble methods.
Time series modeling in traffic safety research.
Lavrenz, Steven M; Vlahogianni, Eleni I; Gkritza, Konstantina; Ke, Yue
2018-08-01
The use of statistical models for analyzing traffic safety (crash) data has been well-established. However, time series techniques have traditionally been underrepresented in the corresponding literature, due to challenges in data collection, along with a limited knowledge of proper methodology. In recent years, new types of high-resolution traffic safety data, especially in measuring driver behavior, have made time series modeling techniques an increasingly salient topic of study. Yet there remains a dearth of information to guide analysts in their use. This paper provides an overview of the state of the art in using time series models in traffic safety research, and discusses some of the fundamental techniques and considerations in classic time series modeling. It also presents ongoing and future opportunities for expanding the use of time series models, and explores newer modeling techniques, including computational intelligence models, which hold promise in effectively handling ever-larger data sets. The information contained herein is meant to guide safety researchers in understanding this broad area of transportation data analysis, and provide a framework for understanding safety trends that can influence policy-making. Copyright © 2017 Elsevier Ltd. All rights reserved.
DEFF Research Database (Denmark)
Batra, Tushar; Schaltz, Erik
2014-01-01
Series-series and series-parallel topologies are the most favored topologies for design of wireless power transfer system for vehicle applications. The series-series topology has the advantage of reflecting only the resistive part on the primary side. On the other hand, the current source output...... characteristics of the series-parallel topology are more suited for the battery of the vehicle. This paper compares the two topologies in terms of magnetic emissions to the surroundings for the same input power, primary current, quality factor and inductors. Theoretical and simulation results show that the series...
Time Series Forecasting with Missing Values
Directory of Open Access Journals (Sweden)
Shin-Fu Wu
2015-11-01
Full Text Available Time series prediction has become more popular in various kinds of applications such as weather prediction, control engineering, financial analysis, industrial monitoring, etc. To deal with real-world problems, we are often faced with missing values in the data due to sensor malfunctions or human errors. Traditionally, the missing values are simply omitted or replaced by means of imputation methods. However, omitting those missing values may cause temporal discontinuity. Imputation methods, on the other hand, may alter the original time series. In this study, we propose a novel forecasting method based on least squares support vector machine (LSSVM. We employ the input patterns with the temporal information which is defined as local time index (LTI. Time series data as well as local time indexes are fed to LSSVM for doing forecasting without imputation. We compare the forecasting performance of our method with other imputation methods. Experimental results show that the proposed method is promising and is worth further investigations.
Laboratory-scale thyristor controlled series capacitor
Energy Technology Data Exchange (ETDEWEB)
Matsuki, J.; Ikeda, K.; Abe, M. [Kyoto University, Kyoto (Japan)
1996-10-20
This paper describes the results of an experimental study on the characteristics of a thyristor controlled series capacitor (TCSC). At present, there are two major thyristor controlled series compensation projects in the U.S.: the Kayenta ASC and the Slatt TCSC. However, there has been little operating experience and thus further understanding of the characteristics of TCSC is still to be sought. Therefore, a laboratory-scale TCSC was produced and installed in a laboratory power system. The impedance characteristics, waveshapes of voltages and currents in the TCSC circuit, and harmonics, for various thyristor firing angles, and insertion responses were measured and analyzed. In particular, effects of the size of the circuit components, i.e., parasitic resistance, additional damping resistance and series reactor, on the overall TCSC performances were investigated. The results were compared with EMTP simulations. 10 refs., 7 figs.
Efficient Approximate OLAP Querying Over Time Series
DEFF Research Database (Denmark)
Perera, Kasun Baruhupolage Don Kasun Sanjeewa; Hahmann, Martin; Lehner, Wolfgang
2016-01-01
The ongoing trend for data gathering not only produces larger volumes of data, but also increases the variety of recorded data types. Out of these, especially time series, e.g. various sensor readings, have attracted attention in the domains of business intelligence and decision making. As OLAP...... queries play a major role in these domains, it is desirable to also execute them on time series data. While this is not a problem on the conceptual level, it can become a bottleneck with regards to query run-time. In general, processing OLAP queries gets more computationally intensive as the volume...... of data grows. This is a particular problem when querying time series data, which generally contains multiple measures recorded at fine time granularities. Usually, this issue is addressed either by scaling up hardware or by employing workload based query optimization techniques. However, these solutions...
Introduction to time series analysis and forecasting
Montgomery, Douglas C; Kulahci, Murat
2008-01-01
An accessible introduction to the most current thinking in and practicality of forecasting techniques in the context of time-oriented data. Analyzing time-oriented data and forecasting are among the most important problems that analysts face across many fields, ranging from finance and economics to production operations and the natural sciences. As a result, there is a widespread need for large groups of people in a variety of fields to understand the basic concepts of time series analysis and forecasting. Introduction to Time Series Analysis and Forecasting presents the time series analysis branch of applied statistics as the underlying methodology for developing practical forecasts, and it also bridges the gap between theory and practice by equipping readers with the tools needed to analyze time-oriented data and construct useful, short- to medium-term, statistically based forecasts.
Time series clustering in large data sets
Directory of Open Access Journals (Sweden)
Jiří Fejfar
2011-01-01
Full Text Available The clustering of time series is a widely researched area. There are many methods for dealing with this task. We are actually using the Self-organizing map (SOM with the unsupervised learning algorithm for clustering of time series. After the first experiment (Fejfar, Weinlichová, Šťastný, 2009 it seems that the whole concept of the clustering algorithm is correct but that we have to perform time series clustering on much larger dataset to obtain more accurate results and to find the correlation between configured parameters and results more precisely. The second requirement arose in a need for a well-defined evaluation of results. It seems useful to use sound recordings as instances of time series again. There are many recordings to use in digital libraries, many interesting features and patterns can be found in this area. We are searching for recordings with the similar development of information density in this experiment. It can be used for musical form investigation, cover songs detection and many others applications.The objective of the presented paper is to compare clustering results made with different parameters of feature vectors and the SOM itself. We are describing time series in a simplistic way evaluating standard deviations for separated parts of recordings. The resulting feature vectors are clustered with the SOM in batch training mode with different topologies varying from few neurons to large maps.There are other algorithms discussed, usable for finding similarities between time series and finally conclusions for further research are presented. We also present an overview of the related actual literature and projects.
Eta Products and Theta Series Identities
Kohler, Gunter
2011-01-01
This monograph deals with products of Dedekind's eta function, with Hecke theta series on quadratic number fields, and with "Eisenstein series." The author brings to the public the large number of identities that have been discovered over the past 20 years, the majority of which have not been published elsewhere. This book will be of interest to graduate students and scholars in the field of number theory and, in particular, modular forms. It is not an introductory text in this field. Nevertheless, some theoretical background material is presented that is important for understanding
Clinical and epidemiological rounds. Time series
Directory of Open Access Journals (Sweden)
León-Álvarez, Alba Luz
2016-07-01
Full Text Available Analysis of time series is a technique that implicates the study of individuals or groups observed in successive moments in time. This type of analysis allows the study of potential causal relationships between different variables that change over time and relate to each other. It is the most important technique to make inferences about the future, predicting, on the basis or what has happened in the past and it is applied in different disciplines of knowledge. Here we discuss different components of time series, the analysis technique and specific examples in health research.
Introduction to time series analysis and forecasting
Montgomery, Douglas C; Kulahci, Murat
2015-01-01
Praise for the First Edition ""…[t]he book is great for readers who need to apply the methods and models presented but have little background in mathematics and statistics."" -MAA Reviews Thoroughly updated throughout, Introduction to Time Series Analysis and Forecasting, Second Edition presents the underlying theories of time series analysis that are needed to analyze time-oriented data and construct real-world short- to medium-term statistical forecasts. Authored by highly-experienced academics and professionals in engineering statistics, the Second Edition features discussions on both
Building Chaotic Model From Incomplete Time Series
Siek, Michael; Solomatine, Dimitri
2010-05-01
This paper presents a number of novel techniques for building a predictive chaotic model from incomplete time series. A predictive chaotic model is built by reconstructing the time-delayed phase space from observed time series and the prediction is made by a global model or adaptive local models based on the dynamical neighbors found in the reconstructed phase space. In general, the building of any data-driven models depends on the completeness and quality of the data itself. However, the completeness of the data availability can not always be guaranteed since the measurement or data transmission is intermittently not working properly due to some reasons. We propose two main solutions dealing with incomplete time series: using imputing and non-imputing methods. For imputing methods, we utilized the interpolation methods (weighted sum of linear interpolations, Bayesian principle component analysis and cubic spline interpolation) and predictive models (neural network, kernel machine, chaotic model) for estimating the missing values. After imputing the missing values, the phase space reconstruction and chaotic model prediction are executed as a standard procedure. For non-imputing methods, we reconstructed the time-delayed phase space from observed time series with missing values. This reconstruction results in non-continuous trajectories. However, the local model prediction can still be made from the other dynamical neighbors reconstructed from non-missing values. We implemented and tested these methods to construct a chaotic model for predicting storm surges at Hoek van Holland as the entrance of Rotterdam Port. The hourly surge time series is available for duration of 1990-1996. For measuring the performance of the proposed methods, a synthetic time series with missing values generated by a particular random variable to the original (complete) time series is utilized. There exist two main performance measures used in this work: (1) error measures between the actual
Derivation of Mayer Series from Canonical Ensemble
International Nuclear Information System (INIS)
Wang Xian-Zhi
2016-01-01
Mayer derived the Mayer series from both the canonical ensemble and the grand canonical ensemble by use of the cluster expansion method. In 2002, we conjectured a recursion formula of the canonical partition function of a fluid (X.Z. Wang, Phys. Rev. E 66 (2002) 056102). In this paper we give a proof for this formula by developing an appropriate expansion of the integrand of the canonical partition function. We further derive the Mayer series solely from the canonical ensemble by use of this recursion formula. (paper)
Derivation of Mayer Series from Canonical Ensemble
Wang, Xian-Zhi
2016-02-01
Mayer derived the Mayer series from both the canonical ensemble and the grand canonical ensemble by use of the cluster expansion method. In 2002, we conjectured a recursion formula of the canonical partition function of a fluid (X.Z. Wang, Phys. Rev. E 66 (2002) 056102). In this paper we give a proof for this formula by developing an appropriate expansion of the integrand of the canonical partition function. We further derive the Mayer series solely from the canonical ensemble by use of this recursion formula.
Kayenta advanced series compensation operational experience
Energy Technology Data Exchange (ETDEWEB)
1994-01-01
The world's first three-phase, thyristor-controlled series compensation scheme with continuously variable impedance has been introduced into a transmission system. Energized and dedicated in September 1992, the installation was placed into commercial operation in January 1993 and has provided over one year of operating experience. This paper describes the 230 kV, 330 MVAr (60 Hz) advanced series compensation (ASC) project, located in north-eastern Arizona at Kayenta Substation on the 320 km Glen Canyon-Shiprock transmission line. The paper describes operating experiences, coordination with phase shifting transformer, phase shifter failure, platform power, system disturbances, and future plans.
The Statistical Analysis of Time Series
Anderson, T W
2011-01-01
The Wiley Classics Library consists of selected books that have become recognized classics in their respective fields. With these new unabridged and inexpensive editions, Wiley hopes to extend the life of these important works by making them available to future generations of mathematicians and scientists. Currently available in the Series: T. W. Anderson Statistical Analysis of Time Series T. S. Arthanari & Yadolah Dodge Mathematical Programming in Statistics Emil Artin Geometric Algebra Norman T. J. Bailey The Elements of Stochastic Processes with Applications to the Natural Sciences George
Patch testing with Indian standard series
Directory of Open Access Journals (Sweden)
Narendra G
2002-01-01
Full Text Available Hundred patients (61 males, 39 females suspected to have allergic contact dermatitis were patch tested with Indian standard series (ISS. Forty four showed one or more positive reactions. The frequent sensitizers observed were nickel sulphate-12 (15%, potassium dichromate-11 (13.75%, cobalt chloride and colophony-7 (8.75% each, fragrance mix and thiuram mix-6 (7.5% each. The ISS differs from the European Standard Series by inclusion of propylene glycol, nitrofurazone, gentamicin, chlorocresol, PEG-400 and ethylenediamine chloride where assesquiterpene lactone mix and primin allergens are excluded.
Horváth, Csilla; Kornelis, Marcel; Leeflang, Peter S.H.
2002-01-01
In this review, we give a comprehensive summary of time series techniques in marketing, and discuss a variety of time series analysis (TSA) techniques and models. We classify them in the sets (i) univariate TSA, (ii) multivariate TSA, and (iii) multiple TSA. We provide relevant marketing
On a General Class of Trigonometric Functions and Fourier Series
Pavao, H. Germano; Capelas de Oliveira, E.
2008-01-01
We discuss a general class of trigonometric functions whose corresponding Fourier series can be used to calculate several interesting numerical series. Particular cases are presented. (Contains 4 notes.)
Complex dynamic in ecological time series
Peter Turchin; Andrew D. Taylor
1992-01-01
Although the possibility of complex dynamical behaviors-limit cycles, quasiperiodic oscillations, and aperiodic chaos-has been recognized theoretically, most ecologists are skeptical of their importance in nature. In this paper we develop a methodology for reconstructing endogenous (or deterministic) dynamics from ecological time series. Our method consists of fitting...
Hilbert's Grand Hotel with a series twist
Wijeratne, Chanakya; Mamolo, Ami; Zazkis, Rina
2014-08-01
This paper presents a new twist on a familiar paradox, linking seemingly disparate ideas under one roof. Hilbert's Grand Hotel, a paradox which addresses infinite set comparisons is adapted and extended to incorporate ideas from calculus - namely infinite series. We present and resolve several variations, and invite the reader to explore his or her own variations.
Trade (Marketing): Occupational Cluster Series-6.
Miller, David H., Comp.; Moore, Allen B., Comp.
This compilation of ERIC abstracts dealing with trade is the sixth in a series that identifies research and instructional materials in selected occupational clusters. Fifty-seven documents were identified by means of computer searches of "Research in Education" from 1967 to December 1972. Instructions on how to use ERIC reference…
Inferring interdependencies from short time series
Indian Academy of Sciences (India)
Abstract. Complex networks provide an invaluable framework for the study of interlinked dynamical systems. In many cases, such networks are constructed from observed time series by first estimating the ...... does not quantify causal relations (unlike IOTA, or .... Africa_map_regions.svg, which is under public domain.
Music! Young Discovery Library Series: 25.
Laurencin, Genevieve
Part of an international series of amply illustrated, colorful, small size books for children ages 5 to 10, this volume presents stories about different aspects of music. The text explains how to listen to music, the main families of musical instruments, the importance of musical instruments in other cultures, and how a violin is constructed. Each…
Classroom Management. TESOL Classroom Practice Series
Farrell, Thomas S. C., Ed.
2008-01-01
This series captures the dynamics of the contemporary ESOL classroom. It showcases state-of-the-art curricula, materials, tasks, and activities reflecting emerging trends in language education and seeks to build localized language teaching and learning theories based on teachers' and students' unique experiences in and beyond the classroom. Each…
5. CASE SERIES OF MANIA SECONDARY
African Journals Online (AJOL)
Esem
meeting the criteria for DSM IV- TR is increasing. What is not clear with this increase is whether it is primary mania or secondary mania linked with HIV. METHODS. This study design was a case series in which patients with acute manic episodes were admitted to. Chainama Hills College Hospital and University. Teaching ...
Children's Perceived Realism of Family Television Series.
Rabin, Beth E.; And Others
This study examined the influence of grade level, program content, and ethnic match between viewer and television characters on children's perceptions of the realism of families portrayed in television series. In the 1986-87 school year, a sample of 1,692 children in 2nd, 5th, and 10th grades completed a 13-item questionnaire measuring their…
Tourism. Leonardo da Vinci Series: Good Practices.
Commission of the European Communities, Brussels (Belgium). Directorate-General for Education and Culture.
This brochure, part of a series about good practices in vocational training in the European Union, describes 10 projects that have promoted investment in human resources through training in the tourism sector to promote sustainable, or responsible, tourism. The projects and their countries of origin are as follows: (1) BEEFT, training of mobility…
Computation of solar perturbations with Poisson series
Broucke, R.
1974-01-01
Description of a project for computing first-order perturbations of natural or artificial satellites by integrating the equations of motion on a computer with automatic Poisson series expansions. A basic feature of the method of solution is that the classical variation-of-parameters formulation is used rather than rectangular coordinates. However, the variation-of-parameters formulation uses the three rectangular components of the disturbing force rather than the classical disturbing function, so that there is no problem in expanding the disturbing function in series. Another characteristic of the variation-of-parameters formulation employed is that six rather unusual variables are used in order to avoid singularities at the zero eccentricity and zero (or 90 deg) inclination. The integration process starts by assuming that all the orbit elements present on the right-hand sides of the equations of motion are constants. These right-hand sides are then simple Poisson series which can be obtained with the use of the Bessel expansions of the two-body problem in conjunction with certain interation methods. These Poisson series can then be integrated term by term, and a first-order solution is obtained.
The Vietnamese in America. In America Series.
Rutledge, Paul
The history of Vietnamese immigration to the United States is traced, and contributions Vietnamese immigrants have made to the United States are reviewed in this book which is part of a series for children. Most Vietnamese immigrants came in the wake of the Vietnam War, making them among the recent immigrants to the United States. Determination,…
On modeling panels of time series
Ph.H.B.F. Franses (Philip Hans)
2002-01-01
textabstractThis paper reviews research issues in modeling panels of time series. Examples of this type of data are annually observed macroeconomic indicators for all countries in the world, daily returns on the individual stocks listed in the S&P500, and the sales records of all items in a
25 years of time series forecasting
de Gooijer, J.G.; Hyndman, R.J.
2006-01-01
We review the past 25 years of research into time series forecasting. In this silver jubilee issue, we naturally highlight results published in journals managed by the International Institute of Forecasters (Journal of Forecasting 1982-1985 and International Journal of Forecasting 1985-2005). During
Unilateral nodular adrenal hyperplasia: Case series
African Journals Online (AJOL)
A.F. Kotb
2016-07-26
Jul 26, 2016 ... Abstract. Introduction: Nodular adrenal hyperplasia is one of rare causes of adrenocortical hyperplasia. The disease usually presents bilaterally. Few publications discussed the possibility of unilateral disease, in association with hyperaldosteronism or Cushing syndrome. Case series: We are reporting 3 ...
Effetti di serie: semiotica della dipendenza televisiva
Directory of Open Access Journals (Sweden)
Valentina Pisanty
2016-06-01
Full Text Available Nelle conversazioni quotidiane e in rete si discute molto della dipendenza da serie televisive, con particolare riferimento alle serie continue di ultima generazione (tra cui Game of Thrones, Homeland, House of Cards e simili, le quali sembrano incoraggiare il cosiddetto binge-watching più di qualsiasi altra fiction precedente. Molti commentatori paragonano questo fenomeno alla tossicodipendenza, e una recente ricerca psicologica (Hoon Hi Sung, Eun Yeon Kang, Wei-Na Lee 2015 collega la dipendenza da serie alla depressione. Ma quanto è accurato (o invece metaforico l’accostamento della compulsione seriale alle forme più tradizionali di intossicazione? Questo articolo analizza la vasta fenomenologia delle dipendenze da serie da un prospettiva semiotica, con il proposito di distinguere tra diversi stili di fruizione immersiva: dalle maratone solitarie e onnivore che effettivamente possono suscitare sentimenti individuali di frustrazione e di inadeguatezza, all’intensa attività sociale che viceversa circonda alcuni specifici culti televisivi. Sino a che punto è possibile ascrivere una simile gamma di atteggiamenti interpretativi alle strutture stesse dei testi, per esempio in rapporto alle trame, all’architettura dei mondi narrativi e alla costruzione di personaggi con cui gli spettatori possono identificarsi? E quali effetti producono le frequenti e prolungate immersioni nei mondi seriali sulla percezione collettiva del mondo reale?
Fluorine geochemistry in volcanic rock series
DEFF Research Database (Denmark)
Stecher, Ole
1998-01-01
A new analytical procedure has been established in order to determine low fluorine concentrations (30–100 ppm F) in igneous rocks, and the method has also proven successful for higher concentrations (100–4000 ppm F). Fluorine has been measured in a series of olivine tholeiites from the Reykjanes ...
Pyogenic Tenosynovitis in Infants: A Case Series.
Lironi, Céline; Steiger, Christina; Juchler, Céline; Spyropoulou, Vasiliki; Samara, Eleftheria; Ceroni, Dimitri
2017-11-01
Pyogenic tenosynovitis is an uncommon condition in children, and there are few published case reports. We present a series of 11 cases who were treated in the Geneva Children Hospital in the last 10 years. Kingella kingae was the main pathogen, and the characteristics of infection (inflammatory indices, clinical findings and severity) are similar to other osteoarticular K. kingae infections in infants.
Multi-frac test series. Final report
Energy Technology Data Exchange (ETDEWEB)
Schmidt, R A; Warpinski, N R; Finley, S J; Shear, R C
1981-11-01
This paper describes a series of five full-scale tests performed to evaluate various multi-frac concepts. The tests were conducted at the Nevada Test Site in horizontal boreholes drilled in ash-fall tuff from a tunnel under 1300 ft of overburden.
A method for summing nonalternating asymptotic series
International Nuclear Information System (INIS)
Kazakov, D.I.
1980-01-01
A method for reconstructing a function from its nonalternating asymptotic series is proposed. It can also be applied when only a limited number of coefficients and their high order asymptotic behaviour are known. The method is illustrated by examples of the ordinary simple integral simulating a functional integral in a theory with degenerate minimum and of the double-well unharmonic oscillator
Introduction to time series and forecasting
Brockwell, Peter J
2016-01-01
This book is aimed at the reader who wishes to gain a working knowledge of time series and forecasting methods as applied to economics, engineering and the natural and social sciences. It assumes knowledge only of basic calculus, matrix algebra and elementary statistics. This third edition contains detailed instructions for the use of the professional version of the Windows-based computer package ITSM2000, now available as a free download from the Springer Extras website. The logic and tools of time series model-building are developed in detail. Numerous exercises are included and the software can be used to analyze and forecast data sets of the user's own choosing. The book can also be used in conjunction with other time series packages such as those included in R. The programs in ITSM2000 however are menu-driven and can be used with minimal investment of time in the computational details. The core of the book covers stationary processes, ARMA and ARIMA processes, multivariate time series and state-space mod...
Geometric Series and Computers--An Application.
McNerney, Charles R.
1983-01-01
This article considers the sum of a finite geometric series as applied to numeric data storage in the memory of an electronic digital computer. The presentation is viewed as relevant to programing in several languages and removes some of the mystique associated with syntax constraints that any language imposes. (MP)
Nonlinear Time Series Analysis via Neural Networks
Volná, Eva; Janošek, Michal; Kocian, Václav; Kotyrba, Martin
This article deals with a time series analysis based on neural networks in order to make an effective forex market [Moore and Roche, J. Int. Econ. 58, 387-411 (2002)] pattern recognition. Our goal is to find and recognize important patterns which repeatedly appear in the market history to adapt our trading system behaviour based on them.
Distributed series resistance effects in solar cells
DEFF Research Database (Denmark)
Nielsen, Lars Drud
1982-01-01
A mathematical treatment is presented of the effects of one-dimensional distributed series resistance in solar cells. A general perturbation theory is developed, including consistently the induced spatial variation of diode current density and leading to a first-order equivalent lumped resistance...
Markov Trends in Macroeconomic Time Series
R. Paap (Richard)
1997-01-01
textabstractMany macroeconomic time series are characterised by long periods of positive growth, expansion periods, and short periods of negative growth, recessions. A popular model to describe this phenomenon is the Markov trend, which is a stochastic segmented trend where the slope depends on the
Coastal Culture Area. Native American Curriculum Series.
Ross, Cathy; Fernandes, Roger
Background information, legends, games, illustrations, and art projects are provided in this booklet introducing elementary students to the history and culture of Indian tribes of the North Pacific Coast and Pacific Northwest. One in a series of Native American instructional materials, the booklet provides an overview of the coastal culture area,…
Modeling vector nonlinear time series using POLYMARS
de Gooijer, J.G.; Ray, B.K.
2003-01-01
A modified multivariate adaptive regression splines method for modeling vector nonlinear time series is investigated. The method results in models that can capture certain types of vector self-exciting threshold autoregressive behavior, as well as provide good predictions for more general vector
Modeling seasonality in bimonthly time series
Ph.H.B.F. Franses (Philip Hans)
1992-01-01
textabstractA recurring issue in modeling seasonal time series variables is the choice of the most adequate model for the seasonal movements. One selection method for quarterly data is proposed in Hylleberg et al. (1990). Market response models are often constructed for bimonthly variables, and
Time Series Modelling using Proc Varmax
DEFF Research Database (Denmark)
Milhøj, Anders
2007-01-01
In this paper it will be demonstrated how various time series problems could be met using Proc Varmax. The procedure is rather new and hence new features like cointegration, testing for Granger causality are included, but it also means that more traditional ARIMA modelling as outlined by Box...
On clustering fMRI time series
DEFF Research Database (Denmark)
Goutte, Cyril; Toft, Peter Aundal; Rostrup, E.
1999-01-01
Analysis of fMRI time series is often performed by extracting one or more parameters for the individual voxels. Methods based, e.g., on various statistical tests are then used to yield parameters corresponding to probability of activation or activation strength. However, these methods do...
Forecasting autoregressive time series under changing persistence
DEFF Research Database (Denmark)
Kruse, Robinson
Changing persistence in time series models means that a structural change from nonstationarity to stationarity or vice versa occurs over time. Such a change has important implications for forecasting, as negligence may lead to inaccurate model predictions. This paper derives generally applicable...
Mahler Measure, Eisenstein Series and Dimers
Stienstra, J.
2007-01-01
This note reveals a mysterious link between the partition function of certain dimer models on 2-dimensional tori and the L-function of their spectral curves. It also relates the partition function in certain families of dimer models to Eisenstein series. http://www.arxiv.org/abs/math.NT/0502197
Robust Control Charts for Time Series Data
Croux, C.; Gelper, S.; Mahieu, K.
2010-01-01
This article presents a control chart for time series data, based on the one-step- ahead forecast errors of the Holt-Winters forecasting method. We use robust techniques to prevent that outliers affect the estimation of the control limits of the chart. Moreover, robustness is important to maintain
The Audit Committee. AGB Effective Committee Series
Staisloff, Richard L.
2011-01-01
This publication is part of an Association of Governing Boards of Universities and Colleges (AGB) series devoted to strengthening the role of key standing committees of governing boards. While there is no optimum committee system for institutions of higher education, certain principles, practices, and procedures prevail. The best practices…
Optimal transformations for categorical autoregressive time series
Buuren, S. van
1996-01-01
This paper describes a method for finding optimal transformations for analyzing time series by autoregressive models. 'Optimal' implies that the agreement between the autoregressive model and the transformed data is maximal. Such transformations help 1) to increase the model fit, and 2) to analyze
Bernoulli Polynomials, Fourier Series and Zeta Numbers
DEFF Research Database (Denmark)
Scheufens, Ernst E
2013-01-01
Fourier series for Bernoulli polynomials are used to obtain information about values of the Riemann zeta function for integer arguments greater than one. If the argument is even we recover the well-known exact values, if the argument is odd we find integral representations and rapidly convergent...
Fourier Series, the DFT and Shape Modelling
DEFF Research Database (Denmark)
Skoglund, Karl
2004-01-01
This report provides an introduction to Fourier series, the discrete Fourier transform, complex geometry and Fourier descriptors for shape analysis. The content is aimed at undergraduate and graduate students who wish to learn about Fourier analysis in general, as well as its application to shape...
Lecture notes for Advanced Time Series Analysis
DEFF Research Database (Denmark)
Madsen, Henrik; Holst, Jan
1997-01-01
A first version of this notes was used at the lectures in Grenoble, and they are now extended and improved (together with Jan Holst), and used in Ph.D. courses on Advanced Time Series Analysis at IMM and at the Department of Mathematical Statistics, University of Lund, 1994, 1997, ...
Patchy proteins, anions and the Hofmeister series
Czech Academy of Sciences Publication Activity Database
Lund, Mikael; Jungwirth, Pavel
2008-01-01
Roč. 20, č. 49 (2008), 494218/1-494218/4 ISSN 0953-8984 R&D Projects: GA MŠk LC512 Institutional research plan: CEZ:AV0Z40550506 Keywords : lyzozyme * water * protein association * Hofmeister series Subject RIV: CF - Physical ; The oretical Chemistry Impact factor: 1.900, year: 2008
Some Characteristics Of the Financial Data Series
Directory of Open Access Journals (Sweden)
Gheorghe Săvoiu
2013-05-01
Full Text Available This paper attempts to delineate from a theoretical of view the financial data series relative to other statistical data, starting from the financial econometrics’ models and from the resulting features of the specific descriptive statistics’ analysis of these characteristic series. From the analysis of these financial data during either very short and short or medium periods of time or from the information provided by the website of the Bucharest Stock Exchange (BVB, the trend of great values of kurtosis or eccentricity and skewness or asymmetry of series appears as a characteristic tendency. During a long period of time, between 1920 and 2008, this tendency seems to be more relevant, being confirmed by an excerpt from the author’s earlier paper written in 2009, concerning the statistical Dow Jones Industrial Average Index (DJIA Index. The skewness, kurtosis and normality of data distribution analysis, using Jarque Bera test, along with the identification of residual autocorrelation or serial correlation in the presence of significant residual values and heteroskedasticity are the major evaluated aspects. Finally, the author investigates the optimal way to ensure statistical comparability inflationary and deflationary method for financial series of data, and offers a solution to the selection of the appropriate indicator from the categories of the absolute values, absolute variation of the absolute values and the relative variation of the absolute values, expressed by percentages, with the finding of the latter alternative as the best alternative in the world of financial modelling of the economic and financial processes and phenomena.
Airline Careers. Aviation Careers Series. Revised.
Zaharevitz, Walter
This booklet, one in a series on aviation careers, outlines the variety of careers available in airlines. The first part of the booklet provides general information about careers in the airline industry, including salaries, working conditions, job requirements, and projected job opportunities. In the main part of the booklet, the following 22 job…
Forecasting with periodic autoregressive time series models
Ph.H.B.F. Franses (Philip Hans); R. Paap (Richard)
1999-01-01
textabstractThis paper is concerned with forecasting univariate seasonal time series data using periodic autoregressive models. We show how one should account for unit roots and deterministic terms when generating out-of-sample forecasts. We illustrate the models for various quarterly UK consumption
Golden Mountain Reading Series. Level 2.
Sung, Robert
This reading series was developed as a means to educate Chinese-American elementary school children in Chinese reading, writing, and culture. The text covers the following topics: Chinese literature, Chinese and American history, famous people, general knowledge, Chinese letter writing, the four seasons, and the major Chinese and American…
The Elusive Neutrino, Understanding the Atom Series.
Bernstein, Jeremy
This booklet is one of the booklets in the "Understanding the Atom Series" published by the U. S. Atomic Energy Commission for high school science teachers and their students. The discovery of the neutrino and the research involving this important elementary particle of matter is discussed. The introductory section reviews topics basic…
Technical Manual: 2002 Series GED Tests
Ezzelle, Carol; Setzer, J. Carl
2009-01-01
This manual was written to provide technical information regarding the 2002 Series GED (General Educational Development) Tests. Throughout this manual, documentation is provided regarding the development of the GED Tests, data collection activities, as well as reliability and validity evidence. The purpose of this manual is to provide evidence…
Trottini, Mario; Vigo, Isabel; Belda, Santiago
2015-01-01
Given a time series, running trends analysis (RTA) involves evaluating least squares trends over overlapping time windows of L consecutive time points, with overlap by all but one observation. This produces a new series called the “running trends series,” which is used as summary statistics of the original series for further analysis. In recent years, RTA has been widely used in climate applied research as summary statistics for time series and time series association. There is no doubt that ...
Energy Technology Data Exchange (ETDEWEB)
Doll, Gerhard; Schuetz, Markus; Waltner, Anton; Kemmler, Roland; Herwig, Helmut [Daimler AG, Stuttgart (Germany)
2013-08-01
With the launch of the M276 DELA 30 in the new Mercedes-Benz E 400, a new member has been added to the tried-and-tested M276 V6 gasoline engine series, which effortlessly embodies the highest of comfort requirements, superior driving performance and efficiency. In comparison to the naturally-aspirated M276 3.5-liter engine, output has increased by 9 percent and torque by an entire 30 percent. At the same time, fuel consumption continues to set a benchmark for competitors. A re-engineered combustion process and technology package secure the future compatibility of the engine and compliance with global emissions regulations. The EU6 emissions standard, for example, will be fulfilled by the new E400 when it is launched. (orig.)
Algorithm for Compressing Time-Series Data
Hawkins, S. Edward, III; Darlington, Edward Hugo
2012-01-01
An algorithm based on Chebyshev polynomials effects lossy compression of time-series data or other one-dimensional data streams (e.g., spectral data) that are arranged in blocks for sequential transmission. The algorithm was developed for use in transmitting data from spacecraft scientific instruments to Earth stations. In spite of its lossy nature, the algorithm preserves the information needed for scientific analysis. The algorithm is computationally simple, yet compresses data streams by factors much greater than two. The algorithm is not restricted to spacecraft or scientific uses: it is applicable to time-series data in general. The algorithm can also be applied to general multidimensional data that have been converted to time-series data, a typical example being image data acquired by raster scanning. However, unlike most prior image-data-compression algorithms, this algorithm neither depends on nor exploits the two-dimensional spatial correlations that are generally present in images. In order to understand the essence of this compression algorithm, it is necessary to understand that the net effect of this algorithm and the associated decompression algorithm is to approximate the original stream of data as a sequence of finite series of Chebyshev polynomials. For the purpose of this algorithm, a block of data or interval of time for which a Chebyshev polynomial series is fitted to the original data is denoted a fitting interval. Chebyshev approximation has two properties that make it particularly effective for compressing serial data streams with minimal loss of scientific information: The errors associated with a Chebyshev approximation are nearly uniformly distributed over the fitting interval (this is known in the art as the "equal error property"); and the maximum deviations of the fitted Chebyshev polynomial from the original data have the smallest possible values (this is known in the art as the "min-max property").
Convergence of the Distorted Wave Born series
International Nuclear Information System (INIS)
MacMillan, D.S.
1981-01-01
The aim of this thesis is to begin to understand the idea of reaction mechanisms in nonrelativistic scattering systems. If we have a complete reaction theory of a particular scattering system, then we claim that the theory itself must contain information about important reaction mechanisms in the system. This information can be used to decide what reaction mechanisms should be included in an approximate calculation. To investigate this claim, we studied several solvable models. The primary concept employed in studying our models is the convergence of the multistep series generated by iterating the corresponding scattering integral equation. We known that the eigenvalues of the kernel of the Lippmann-Schwinger equation for potential scattering determine the rate of convergence of the Born series. The Born series will converge only if these eigenvalues all life within the unit circle. We extend these results to a study of the distorted wave Born series for inelastic scattering. The convergence criterion tells us when approximations are valid. We learn how the convergence of the distorted wave series depends upon energy, coupling constants, angular momentum, and angular momentum transfer. In one of our models, we look at several possible distorting potentials to see which one gives the best convergence. We have also applied our results to several actual DWBA or coupled channel calculations in the literature. In addition to the study of models of two-body scattering systems, we have considered the case of rearrangement scattering. We have discussed the formulation of (N greater than or equal to 3)-body distorted wave equations in which the interior dynamics have been redistributed by introducing compact N-body distortion potentials
DEFF Research Database (Denmark)
Batra, Tushar; Schaltz, Erik
2014-01-01
Resonant circuits of wireless power transfer system can be designed in four possible ways by placing the primary and secondary capacitor in a series or parallel order with respect to the corresponding inductor. The two topologies series-parallel and series-series under investigation have been...... already compared in terms of their output behavior (current or voltage source) and reflection of the secondary impedance on the primary side. In this paper it is shown that for the same power rating series-parallel topology emits lesser magnetic fields to the surroundings than its series...
Scaling properties of Polish rain series
Licznar, P.
2009-04-01
Scaling properties as well as multifractal nature of precipitation time series have not been studied for local Polish conditions until recently due to lack of long series of high-resolution data. The first Polish study of precipitation time series scaling phenomena was made on the base of pluviograph data from the Wroclaw University of Environmental and Life Sciences meteorological station located at the south-western part of the country. The 38 annual rainfall records from years 1962-2004 were converted into digital format and transformed into a standard format of 5-minute time series. The scaling properties and multifractal character of this material were studied by means of several different techniques: power spectral density analysis, functional box-counting, probability distribution/multiple scaling and trace moment methods. The result proved the general scaling character of time series at the range of time scales ranging form 5 minutes up to at least 24 hours. At the same time some characteristic breaks at scaling behavior were recognized. It is believed that the breaks were artificial and arising from the pluviograph rain gauge measuring precision limitations. Especially strong limitations at the precision of low-intensity precipitations recording by pluviograph rain gauge were found to be the main reason for artificial break at energy spectra, as was reported by other authors before. The analysis of co-dimension and moments scaling functions showed the signs of the first-order multifractal phase transition. Such behavior is typical for dressed multifractal processes that are observed by spatial or temporal averaging on scales larger than the inner-scale of those processes. The fractal dimension of rainfall process support derived from codimension and moments scaling functions geometry analysis was found to be 0.45. The same fractal dimension estimated by means of the functional box-counting method was equal to 0.58. At the final part of the study
Multiplier convergent series and uniform convergence of mapping ...
Indian Academy of Sciences (India)
MS received 14 April 2011; revised 17 November 2012. Abstract. In this paper, we introduce the frame property of complex sequence sets and study the uniform convergence of nonlinear mapping series in β-dual of spaces consisting of multiplier convergent series. Keywords. Multiplier convergent series; mapping series. 1.
Identifying secondary series for stepwise common singular spectrum ...
African Journals Online (AJOL)
Abstract. Common singular spectrum analysis is a technique which can be used to forecast a pri- mary time series by using the information from a secondary series. Not all secondary series, however, provide useful information. A first contribution in this paper is to point out the properties which a secondary series should ...
Visibility graphlet approach to chaotic time series
Energy Technology Data Exchange (ETDEWEB)
Mutua, Stephen [Business School, University of Shanghai for Science and Technology, Shanghai 200093 (China); Computer Science Department, Masinde Muliro University of Science and Technology, P.O. Box 190-50100, Kakamega (Kenya); Gu, Changgui, E-mail: gu-changgui@163.com, E-mail: hjyang@ustc.edu.cn; Yang, Huijie, E-mail: gu-changgui@163.com, E-mail: hjyang@ustc.edu.cn [Business School, University of Shanghai for Science and Technology, Shanghai 200093 (China)
2016-05-15
Many novel methods have been proposed for mapping time series into complex networks. Although some dynamical behaviors can be effectively captured by existing approaches, the preservation and tracking of the temporal behaviors of a chaotic system remains an open problem. In this work, we extended the visibility graphlet approach to investigate both discrete and continuous chaotic time series. We applied visibility graphlets to capture the reconstructed local states, so that each is treated as a node and tracked downstream to create a temporal chain link. Our empirical findings show that the approach accurately captures the dynamical properties of chaotic systems. Networks constructed from periodic dynamic phases all converge to regular networks and to unique network structures for each model in the chaotic zones. Furthermore, our results show that the characterization of chaotic and non-chaotic zones in the Lorenz system corresponds to the maximal Lyapunov exponent, thus providing a simple and straightforward way to analyze chaotic systems.
Kinetic Titration Series with Biolayer Interferometry
Frenzel, Daniel; Willbold, Dieter
2014-01-01
Biolayer interferometry is a method to analyze protein interactions in real-time. In this study, we illustrate the usefulness to quantitatively analyze high affinity protein ligand interactions employing a kinetic titration series for characterizing the interactions between two pairs of interaction patterns, in particular immunoglobulin G and protein G B1 as well as scFv IC16 and amyloid beta (1–42). Kinetic titration series are commonly used in surface plasmon resonance and involve sequential injections of analyte over a desired concentration range on a single ligand coated sensor chip without waiting for complete dissociation between the injections. We show that applying this method to biolayer interferometry is straightforward and i) circumvents problems in data evaluation caused by unavoidable sensor differences, ii) saves resources and iii) increases throughput if screening a multitude of different analyte/ligand combinations. PMID:25229647
Data report on series 6 reflood experiment
International Nuclear Information System (INIS)
Iguchi, Tadashi; Murao, Yoshio; Sudoh, Takashi; Sudo, Yukio; Sugimoto, Jun
1979-03-01
Series 6 reflood experiments (experiment with 4 x 4 indirectly heated rods) were carried out from March to June 1978. The purpose of the experiments was: 1) to observe overall reflood phenomena in a 4 x 4 indirectly heated heater rod bundle with thermocouples inbedded completely in the cladding, 2) to examine the quench characteristics at low flooding rate, 3) to measure steady-state differential pressures in the core, 4) to investigate the heat transfer coefficients before quenching, 5) to investigate the water effluence behavior at outlet of the core, 6) to investigate the effect of a non-heated rod, and 7) to examine the response characteristics of the system at forced oscillating flooding rate. Described are the experimental conditions and the results (cladding temperatures, pressure differences and flow rates) in the constant flooding rate experiments in series 6 experiment. (author)
Time-Series Analysis: A Cautionary Tale
Damadeo, Robert
2015-01-01
Time-series analysis has often been a useful tool in atmospheric science for deriving long-term trends in various atmospherically important parameters (e.g., temperature or the concentration of trace gas species). In particular, time-series analysis has been repeatedly applied to satellite datasets in order to derive the long-term trends in stratospheric ozone, which is a critical atmospheric constituent. However, many of the potential pitfalls relating to the non-uniform sampling of the datasets were often ignored and the results presented by the scientific community have been unknowingly biased. A newly developed and more robust application of this technique is applied to the Stratospheric Aerosol and Gas Experiment (SAGE) II version 7.0 ozone dataset and the previous biases and newly derived trends are presented.
Time Series Analysis Using Geometric Template Matching.
Frank, Jordan; Mannor, Shie; Pineau, Joelle; Precup, Doina
2013-03-01
We present a novel framework for analyzing univariate time series data. At the heart of the approach is a versatile algorithm for measuring the similarity of two segments of time series called geometric template matching (GeTeM). First, we use GeTeM to compute a similarity measure for clustering and nearest-neighbor classification. Next, we present a semi-supervised learning algorithm that uses the similarity measure with hierarchical clustering in order to improve classification performance when unlabeled training data are available. Finally, we present a boosting framework called TDEBOOST, which uses an ensemble of GeTeM classifiers. TDEBOOST augments the traditional boosting approach with an additional step in which the features used as inputs to the classifier are adapted at each step to improve the training error. We empirically evaluate the proposed approaches on several datasets, such as accelerometer data collected from wearable sensors and ECG data.
Indefinite theta series and generalized error functions
Alexandrov, Sergei; Manschot, Jan; Pioline, Boris
2016-01-01
Theta series for lattices with indefinite signature $(n_+,n_-)$ arise in many areas of mathematics including representation theory and enumerative algebraic geometry. Their modular properties are well understood in the Lorentzian case ($n_+=1$), but have remained obscure when $n_+\\geq 2$. Using a higher-dimensional generalization of the usual (complementary) error function, discovered in an independent physics project, we construct the modular completion of a class of `conformal' holomorphic theta series ($n_+=2$). As an application, we determine the modular properties of a generalized Appell-Lerch sum attached to the lattice ${\\operatorname A}_2$, which arose in the study of rank 3 vector bundles on $\\mathbb{P}^2$. The extension of our method to $n_+>2$ is outlined.
Forecasting with nonlinear time series models
DEFF Research Database (Denmark)
Kock, Anders Bredahl; Teräsvirta, Timo
In this paper, nonlinear models are restricted to mean nonlinear parametric models. Several such models popular in time series econo- metrics are presented and some of their properties discussed. This in- cludes two models based on universal approximators: the Kolmogorov- Gabor polynomial model...... applied to economic fore- casting problems, is briefly highlighted. A number of large published studies comparing macroeconomic forecasts obtained using different time series models are discussed, and the paper also contains a small simulation study comparing recursive and direct forecasts in a partic...... and two versions of a simple artificial neural network model. Techniques for generating multi-period forecasts from nonlinear models recursively are considered, and the direct (non-recursive) method for this purpose is mentioned as well. Forecasting with com- plex dynamic systems, albeit less frequently...
Outlier Detection in Structural Time Series Models
DEFF Research Database (Denmark)
Marczak, Martyna; Proietti, Tommaso
investigate via Monte Carlo simulations how this approach performs for detecting additive outliers and level shifts in the analysis of nonstationary seasonal time series. The reference model is the basic structural model, featuring a local linear trend, possibly integrated of order two, stochastic seasonality......Structural change affects the estimation of economic signals, like the underlying growth rate or the seasonally adjusted series. An important issue, which has attracted a great deal of attention also in the seasonal adjustment literature, is its detection by an expert procedure. The general......–to–specific approach to the detection of structural change, currently implemented in Autometrics via indicator saturation, has proven to be both practical and effective in the context of stationary dynamic regression models and unit–root autoregressions. By focusing on impulse– and step–indicator saturation, we...
Transition edge sensor series array bolometer
Energy Technology Data Exchange (ETDEWEB)
Beyer, J, E-mail: joern.beyer@ptb.d [Physikalisch-Technische Bundesanstalt (PTB), Abbestrasse 2-12, D-10587 Berlin (Germany)
2010-10-15
A transition edge sensor series array (TES-SA) is an array of identical TESs that are connected in series by low-inductance superconducting wiring. The array elements are equally and well thermally coupled to the absorber and respond to changes in the absorber temperature in synchronization. The TES-SA total resistance increases compared to a single TES while the shape of the superconducting transition is preserved. We are developing a TES-SA with a large number, hundreds to thousands, of array elements with the goal of enabling the readout of a TES-based bolometer operated at 4.2 K with a semiconductor-based amplifier located at room temperature. The noise and dynamic performance of a TES-SA bolometer based on a niobium/aluminum bilayer is analyzed. It is shown that stable readout of the bolometer with a low-noise transimpedance amplifier is feasible.
Patchy proteins, anions and the Hofmeister series
Energy Technology Data Exchange (ETDEWEB)
Lund, Mikael; Jungwirth, Pavel [Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo namesti 2, 16610 Prague 6 (Czech Republic); Center for Complex Molecular Systems and Biomolecules, Flemingovo namesti 2, 16610 Prague 6 (Czech Republic)], E-mail: mikael.lund@uochb.cas.cz
2008-12-10
We investigate specific anion binding to a range of patchy protein models and use our results to probe protein-protein interactions for aqueous lysozyme solutions. Our molecular simulation studies show that the ion-protein interaction mechanism and strength largely depend on the nature of the interfacial amino acid residues. Via direct ion pairing, small anions interact with charged side-chains while larger anions are attracted to non-polar residues due to several solvent assisted mechanisms. Incorporating ion and surface specificity into a mesoscopic model for protein-protein interactions we calculate the free energy of interaction between lysozyme molecules in aqueous solutions of sodium chloride and sodium iodide. In agreement with experiment, our finding is that 'salting out' follows the reverse Hofmeister series for pH below the iso-electric point and the direct series for pH above pI.
Nonlinear time series analysis with R
Huffaker, Ray; Rosa, Rodolfo
2017-01-01
In the process of data analysis, the investigator is often facing highly-volatile and random-appearing observed data. A vast body of literature shows that the assumption of underlying stochastic processes was not necessarily representing the nature of the processes under investigation and, when other tools were used, deterministic features emerged. Non Linear Time Series Analysis (NLTS) allows researchers to test whether observed volatility conceals systematic non linear behavior, and to rigorously characterize governing dynamics. Behavioral patterns detected by non linear time series analysis, along with scientific principles and other expert information, guide the specification of mechanistic models that serve to explain real-world behavior rather than merely reproducing it. Often there is a misconception regarding the complexity of the level of mathematics needed to understand and utilize the tools of NLTS (for instance Chaos theory). However, mathematics used in NLTS is much simpler than many other subjec...
Reconstruction of tritium time series in precipitation
International Nuclear Information System (INIS)
Celle-Jeanton, H.; Gourcy, L.; Aggarwal, P.K.
2002-01-01
Tritium is commonly used in groundwaters studies to calculate the recharge rate and to identify the presence of a modern recharge. The knowledge of 3 H precipitation time series is then very important for the study of groundwater recharge. Rozanski and Araguas provided good information on precipitation tritium content in 180 stations of the GNIP network to the end of 1987, but it shows some lacks of measurements either within one chronicle or within one region (the Southern hemisphere for instance). Therefore, it seems to be essential to find a method to recalculate data for a region where no measurement is available.To solve this problem, we propose another method which is based on triangulation. It needs the knowledge of 3 H time series of 3 stations surrounding geographically the 4-th station for which tritium input curve has to be reconstructed
Rigid cohomology over Laurent series fields
Lazda, Christopher
2016-01-01
In this monograph, the authors develop a new theory of p-adic cohomology for varieties over Laurent series fields in positive characteristic, based on Berthelot's theory of rigid cohomology. Many major fundamental properties of these cohomology groups are proven, such as finite dimensionality and cohomological descent, as well as interpretations in terms of Monsky-Washnitzer cohomology and Le Stum's overconvergent site. Applications of this new theory to arithmetic questions, such as l-independence and the weight monodromy conjecture, are also discussed. The construction of these cohomology groups, analogous to the Galois representations associated to varieties over local fields in mixed characteristic, fills a major gap in the study of arithmetic cohomology theories over function fields. By extending the scope of existing methods, the results presented here also serve as a first step towards a more general theory of p-adic cohomology over non-perfect ground fields. Rigid Cohomology over Laurent Series Fields...
Transition edge sensor series array bolometer
International Nuclear Information System (INIS)
Beyer, J
2010-01-01
A transition edge sensor series array (TES-SA) is an array of identical TESs that are connected in series by low-inductance superconducting wiring. The array elements are equally and well thermally coupled to the absorber and respond to changes in the absorber temperature in synchronization. The TES-SA total resistance increases compared to a single TES while the shape of the superconducting transition is preserved. We are developing a TES-SA with a large number, hundreds to thousands, of array elements with the goal of enabling the readout of a TES-based bolometer operated at 4.2 K with a semiconductor-based amplifier located at room temperature. The noise and dynamic performance of a TES-SA bolometer based on a niobium/aluminum bilayer is analyzed. It is shown that stable readout of the bolometer with a low-noise transimpedance amplifier is feasible.
USING SURVEY OF SERIES IN AUDIT
Directory of Open Access Journals (Sweden)
OFILEANU DIMI
2014-12-01
Full Text Available The efficiency of financial audit within an entity can be made by applying sampling statistical techniques. International auditing standards offer the possibility to test only part of financial information of an entity by means of different sampling techniques. The article is a rhetorical and practical speculation regarding the methodology and the possibility to apply a statistical survey of series in the research of documents and accounting records.
Transvestism as a Symptom: A Case Series
Anupama, M.; Gangadhar, K. H.; Shetty, Vandana B.; Dip, P. Bhadja
2016-01-01
Transvestism, commonly termed as cross-dressing, means to dress in the clothing of opposite sex. We describe a series of three cases with transvestism as one of their primary complaints. The discussion sheds light on the various ways in which transvestism as a symptom can present in Psychiatry. In the first two cases, there was lower intelligence. In first and third case, there were other paraphilia along with transvestism. Second case had co-morbid obsessive-compulsive disorder (OCD) and had...
Time Series Forecasting with Missing Values
Shin-Fu Wu; Chia-Yung Chang; Shie-Jue Lee
2015-01-01
Time series prediction has become more popular in various kinds of applications such as weather prediction, control engineering, financial analysis, industrial monitoring, etc. To deal with real-world problems, we are often faced with missing values in the data due to sensor malfunctions or human errors. Traditionally, the missing values are simply omitted or replaced by means of imputation methods. However, omitting those missing values may cause temporal discontinuity. Imputation methods, o...
Strong coupling analogue of the Born series
International Nuclear Information System (INIS)
Dolinszky, T.
1989-10-01
In a given partial wave, the strength of the centrifugal term to be incorporated into the WKBA solutions in different spatial regions can be adjusted so as to make the first order wave functions everywhere smooth and, in strong coupling, exactly reproduce Quantum Mechanics throughout the space. The relevant higher order approximations supply an absolute convergent series expansion of the exact scattering state. (author) 4 refs.; 2 figs.; 2 tabs
Adult intussusception: A case series and review
Shenoy, Santosh
2017-01-01
AIM To identify factors differentiating pathologic adult intussusception (AI) from benign causes and the need for an operative intervention. Current evidence available from the literature is discussed. METHODS This is a case series of eleven patients over the age of 18 and a surgical consultation for ?Intussusception? at a single veteran?s hospital over a five-year period (2011-2016). AI was diagnosed on computed tomography (CT) scan and or flexible endoscopy (colonoscopy). Surgical referrals...
On the formal series Witt transform
Moree, P.
2005-01-01
Given a formal power series f(z)∈C〚z〛f(z)∈C〚z〛 we define, for any positive integer r, its r th Witt transform, Wf(r), by Wf(r)(z)=1r∑d|rμ(d)f(zd)r/d, where μμ denotes the Möbius function. The Witt transform generalizes the necklace polynomials, M(α;n)M(α;n), that occur in the cyclotomic identity
Director`s series on proliferation
Energy Technology Data Exchange (ETDEWEB)
Bailey, K.C.; Price, M.E. [eds.
1994-10-17
This series is an occasional publication of essays on the topics of nuclear, chemical, biological, and missile proliferation. Essays contained in this document include: Key issues on NPT renewal and extension, Africa and nuclear nonproliferation, Kenya`s views on the NPT, Prospects for establishing a zone free of weapons of mass destruction in the middle east, effects of a special nuclear weapon materials cut-off convention, and The UK view of NPT renewal.
A taylor series approach to survival analysis
International Nuclear Information System (INIS)
Brodsky, J.B.; Groer, P.G.
1984-09-01
A method of survival analysis using hazard functions is developed. The method uses the well known mathematical theory for Taylor Series. Hypothesis tests of the adequacy of many statistical models, including proportional hazards and linear and/or quadratic dose responses, are obtained. A partial analysis of leukemia mortality in the Life Span Study cohort is used as an example. Furthermore, a relatively robust estimation procedure for the proportional hazards model is proposed. (author)
Time series analysis of barometric pressure data
International Nuclear Information System (INIS)
La Rocca, Paola; Riggi, Francesco; Riggi, Daniele
2010-01-01
Time series of atmospheric pressure data, collected over a period of several years, were analysed to provide undergraduate students with educational examples of application of simple statistical methods of analysis. In addition to basic methods for the analysis of periodicities, a comparison of two forecast models, one based on autoregression algorithms, and the other making use of an artificial neural network, was made. Results show that the application of artificial neural networks may give slightly better results compared to traditional methods.
A CASE SERIES ON FISH BILE TOXICITY
Directory of Open Access Journals (Sweden)
Dwijen
2015-08-01
Full Text Available A case series of 3 cases of fish bile poisoning are reported. After ingestion of gall bladder of Labeo rohita for alleged vision improvement, generally presented with gastrointestinal symptoms such as cramping pain abdomen, nausea and vomiting within 12 hours after ingestion. Subsequently rena l and hepatic dysfunctions were found in all the three cases. The patient recovered fully with conservative treatment and supportive haemodialysis.
Transmission Line Resonator Segmented with Series Capacitors
DEFF Research Database (Denmark)
Zhurbenko, Vitaliy; Boer, Vincent; Petersen, Esben Thade
2016-01-01
Transmission line resonators are often used as coils in high field MRI. Due to distributed nature of such resonators, coils based on them produce inhomogeneous field. This work investigates application of series capacitors to improve field homogeneity along the resonator. The equations for optimal...... values of evenly distributed capacitors are presented. The performances of the segmented resonator and a regular transmission line resonator are compared....
Area Handbook Series: Uruguay, A Country Study.
1990-12-01
de la Banda Oriental, 1982. Faroppa, Luis, Marisa Buchelli, Alberto Couriel, and Alberto Ben- si6n. Cuatro tesis sobre la situacidn econdmica nacional...mercado de carnes. Montevideo: Fun- daci6n de Cultura Universitaria, 1979. -___ Modelo Batllista: ý Variacidn sobre un viejo tema ? Montevideo: Editorial...Uruguay.: Desde sus origenes hasta 1930. ( Temas del Siglo XX series.) Montevideo: Ediciones de la Banda Oriental, 1984. Elizaincin, Adolfo. "The Emergence
Optimal separable bases and series expansions
International Nuclear Information System (INIS)
Poirier, B.
1997-01-01
A method is proposed for the efficient calculation of the Green close-quote s functions and eigenstates for quantum systems of two or more dimensions. For a given Hamiltonian, the best possible separable approximation is obtained from the set of all Hilbert-space operators. It is shown that this determination itself, as well as the solution of the resultant approximation, is a problem of reduced dimensionality. Moreover, the approximate eigenstates constitute the optimal separable basis, in the sense of self-consistent field theory. The full solution is obtained from the approximation via iterative expansion. In the time-independent perturbation expansion for instance, all of the first-order energy corrections are zero. In the Green close-quote s function case, we have a distorted-wave Born series with optimized convergence properties. This series may converge even when the usual Born series diverges. Analytical results are presented for an application of the method to the two-dimensional shifted harmonic-oscillator system, in the course of which the quantum tanh 2 potential problem is solved exactly. The universal presence of bound states in the latter is shown to imply long-lived resonances in the former. In a comparison with other theoretical methods, we find that the reaction path Hamiltonian fails to predict such resonances. copyright 1997 The American Physical Society
Causal strength induction from time series data.
Soo, Kevin W; Rottman, Benjamin M
2018-04-01
One challenge when inferring the strength of cause-effect relations from time series data is that the cause and/or effect can exhibit temporal trends. If temporal trends are not accounted for, a learner could infer that a causal relation exists when it does not, or even infer that there is a positive causal relation when the relation is negative, or vice versa. We propose that learners use a simple heuristic to control for temporal trends-that they focus not on the states of the cause and effect at a given instant, but on how the cause and effect change from one observation to the next, which we call transitions. Six experiments were conducted to understand how people infer causal strength from time series data. We found that participants indeed use transitions in addition to states, which helps them to reach more accurate causal judgments (Experiments 1A and 1B). Participants use transitions more when the stimuli are presented in a naturalistic visual format than a numerical format (Experiment 2), and the effect of transitions is not driven by primacy or recency effects (Experiment 3). Finally, we found that participants primarily use the direction in which variables change rather than the magnitude of the change for estimating causal strength (Experiments 4 and 5). Collectively, these studies provide evidence that people often use a simple yet effective heuristic for inferring causal strength from time series data. (PsycINFO Database Record (c) 2018 APA, all rights reserved).
Interpretable Categorization of Heterogeneous Time Series Data
Lee, Ritchie; Kochenderfer, Mykel J.; Mengshoel, Ole J.; Silbermann, Joshua
2017-01-01
We analyze data from simulated aircraft encounters to validate and inform the development of a prototype aircraft collision avoidance system. The high-dimensional and heterogeneous time series dataset is analyzed to discover properties of near mid-air collisions (NMACs) and categorize the NMAC encounters. Domain experts use these properties to better organize and understand NMAC occurrences. Existing solutions either are not capable of handling high-dimensional and heterogeneous time series datasets or do not provide explanations that are interpretable by a domain expert. The latter is critical to the acceptance and deployment of safety-critical systems. To address this gap, we propose grammar-based decision trees along with a learning algorithm. Our approach extends decision trees with a grammar framework for classifying heterogeneous time series data. A context-free grammar is used to derive decision expressions that are interpretable, application-specific, and support heterogeneous data types. In addition to classification, we show how grammar-based decision trees can also be used for categorization, which is a combination of clustering and generating interpretable explanations for each cluster. We apply grammar-based decision trees to a simulated aircraft encounter dataset and evaluate the performance of four variants of our learning algorithm. The best algorithm is used to analyze and categorize near mid-air collisions in the aircraft encounter dataset. We describe each discovered category in detail and discuss its relevance to aircraft collision avoidance.
Stochastic nature of series of waiting times
Anvari, Mehrnaz; Aghamohammadi, Cina; Dashti-Naserabadi, H.; Salehi, E.; Behjat, E.; Qorbani, M.; Khazaei Nezhad, M.; Zirak, M.; Hadjihosseini, Ali; Peinke, Joachim; Tabar, M. Reza Rahimi
2013-06-01
Although fluctuations in the waiting time series have been studied for a long time, some important issues such as its long-range memory and its stochastic features in the presence of nonstationarity have so far remained unstudied. Here we find that the “waiting times” series for a given increment level have long-range correlations with Hurst exponents belonging to the interval 1/2
Fourier Series Formalization in ACL2(r
Directory of Open Access Journals (Sweden)
Cuong K. Chau
2015-09-01
Full Text Available We formalize some basic properties of Fourier series in the logic of ACL2(r, which is a variant of ACL2 that supports reasoning about the real and complex numbers by way of non-standard analysis. More specifically, we extend a framework for formally evaluating definite integrals of real-valued, continuous functions using the Second Fundamental Theorem of Calculus. Our extended framework is also applied to functions containing free arguments. Using this framework, we are able to prove the orthogonality relationships between trigonometric functions, which are the essential properties in Fourier series analysis. The sum rule for definite integrals of indexed sums is also formalized by applying the extended framework along with the First Fundamental Theorem of Calculus and the sum rule for differentiation. The Fourier coefficient formulas of periodic functions are then formalized from the orthogonality relations and the sum rule for integration. Consequently, the uniqueness of Fourier sums is a straightforward corollary. We also present our formalization of the sum rule for definite integrals of infinite series in ACL2(r. Part of this task is to prove the Dini Uniform Convergence Theorem and the continuity of a limit function under certain conditions. A key technique in our proofs of these theorems is to apply the overspill principle from non-standard analysis.
A-integrable martingale sequences and Walsh series
International Nuclear Information System (INIS)
Skvortsov, V A
2001-01-01
A sufficient condition for a Walsh series converging to an A-integrable function f to be the A-Fourier's series of f is stated in terms of uniform A-integrability of a martingale subsequence of partial sums of the Walsh series. Moreover, the existence is proved of a Walsh series that converges almost everywhere to an A-integrable function and is not the A-Fourier series of its sum
Series active power filter in power conditioning
Energy Technology Data Exchange (ETDEWEB)
Turunen, J.
2009-07-01
Power quality has become an important issue nowadays for several reasons, e.g. modern society's growing dependence on electricity and the fact that poor power quality may generate significant economic losses in few moments. Probable power quality problems are, e.g. harmonics, flicker, voltage dips and supply interruptions. The power quality may be improved by using filters and compensators.The purpose of this thesis is to research the operation of the series active power filter (SAPF) in power conditioning. Therefore, this thesis presents a comparison of three series hybrid active power filters (SHAPFs) in current harmonics filtering. In addition to this, it is shown how the voltage dip compensation performance of the SAPF is improved in a unified power quality conditioner (UPQC) application.The three SHAPFs included in the comparison are series connected topology (SCT), filter connected topology (FCT) and electrically tuned LC shunt circuit (ETLC). The operating principle of these filters is to direct the harmonic currents produced by the load to flow in the LC shunt circuits instead of the supply. In the case of the SCT this phenomenon is boosted by applying so-called active resistance in the supply branch using the SAPF. In the case of the FCT a similar action is achieved by applying the compensation voltage in series with the LC shunt circuits using the SAPF. In the case of the ETLC the performance of the LC shunt circuit is enhanced by applying so-called active inductances in series with the LC shunt circuit using the SAPF. The SHAPFs are compared by searching for their best current filtering performance using various main circuit and control system configurations and loads. The operation of the SHAPFs is first analysed mathematically. After this, the current filtering performance of the SHAPFs is inspected using simulations and experimental tests. The experimental tests are carried out using SHAPF prototypes. As a result, it is shown that the current
Interpretation of a compositional time series
Tolosana-Delgado, R.; van den Boogaart, K. G.
2012-04-01
Common methods for multivariate time series analysis use linear operations, from the definition of a time-lagged covariance/correlation to the prediction of new outcomes. However, when the time series response is a composition (a vector of positive components showing the relative importance of a set of parts in a total, like percentages and proportions), then linear operations are afflicted of several problems. For instance, it has been long recognised that (auto/cross-)correlations between raw percentages are spurious, more dependent on which other components are being considered than on any natural link between the components of interest. Also, a long-term forecast of a composition in models with a linear trend will ultimately predict negative components. In general terms, compositional data should not be treated in a raw scale, but after a log-ratio transformation (Aitchison, 1986: The statistical analysis of compositional data. Chapman and Hill). This is so because the information conveyed by a compositional data is relative, as stated in their definition. The principle of working in coordinates allows to apply any sort of multivariate analysis to a log-ratio transformed composition, as long as this transformation is invertible. This principle is of full application to time series analysis. We will discuss how results (both auto/cross-correlation functions and predictions) can be back-transformed, viewed and interpreted in a meaningful way. One view is to use the exhaustive set of all possible pairwise log-ratios, which allows to express the results into D(D - 1)/2 separate, interpretable sets of one-dimensional models showing the behaviour of each possible pairwise log-ratios. Another view is the interpretation of estimated coefficients or correlations back-transformed in terms of compositions. These two views are compatible and complementary. These issues are illustrated with time series of seasonal precipitation patterns at different rain gauges of the USA
Economic Analysis in Series-Distillation Desalination
Directory of Open Access Journals (Sweden)
Mirna Rahmah Lubis
2010-06-01
Full Text Available The ability to produce potable water economically is the primary purpose of seawater desalination research. Reverse osmosis (RO and multi-stage flash (MSF cost more than potable water produced from fresh water resources. Therefore, this research investigates a high-efficiency mechanical vapor-compression distillation system that employs an improved water flow arrangement. The incoming salt concentration was 0.15% salt for brackish water and 3.5% salt for seawater, whereas the outgoing salt concentration was 1.5% and 7%, respectively. Distillation was performed at 439 K and 722 kPa for both brackish water feed and seawater feed. Water costs of the various conditions were calculated for brackish water and seawater feeds using optimum conditions considered as 25 and 20 stages, respectively. For brackish water at a temperature difference of 0.96 K, the energy requirement is 2.0 kWh/m3. At this condition, the estimated water cost is $0.39/m3 achieved with 10,000,000 gal/day distillate, 30-year bond, 5% interest rate, and $0.05/kWh electricity. For seawater at a temperature difference of 0.44 K, the energy requirement is 3.97 kWh/m3 and the estimated water cost is $0.61/m3. Greater efficiency of the vapor compression system is achieved by connecting multiple evaporators in series, rather than the traditional parallel arrangement. The efficiency results from the gradual increase of salinity in each stage of the series arrangement in comparison to parallel. Calculations using various temperature differences between boiling brine and condensing steam show the series arrangement has the greatest improvement at lower temperature differences. Keywords: desalination, dropwise condensation, mechanical-vapor compression
Microprocessor Card for Cuban Series polarimeters Laserpol
International Nuclear Information System (INIS)
Arista Romeu, E.; Mora Mazorra, W.
2012-01-01
We present the design consists of a card based on a micro-processor 8-bit adds new software components and their basic living, which allow to deliver new services and expand the possibilities for use in other applications of the polarimeter LASERPOL series, as the polarimetric detection. Given the limitations of the original card it was necessary to introduce a series of changes that would allow to address new user requirements, and expand the possible applications of the instruments. This was done the expansion of the capacity of the EPROM and RAM memory, the decoder circuit was implemented memory map using a programmable integrated circuit, and introduced a real time clock with nonvolatile RAM, these features are exploited to the introduction of new features such as the realization of the polarimeter calibration by the user from a sample pattern or a calibration pattern used as a reference, and the incorporation of the time and date to the reports of measurements required industry for quality control processes. Card that is achieved along with the rest of the components is compatible with polarimeters LASERPOL 101M Series, 3M and LP4, pin to pin, which facilitates their incorporation into the polarimeters in operation in the industry 'in situ' replacement cards from previous models, allowing to extend the possibilities of statistical processing, precision and accuracy of the instruments. Improved measurements in the industry, resulting in significant savings by elimination of losses in production and raw materials. The improved response speed of reading the polarimeters LASERPOL Use and polarimetric detectors. (Author)
Automated time series forecasting for biosurveillance.
Burkom, Howard S; Murphy, Sean Patrick; Shmueli, Galit
2007-09-30
For robust detection performance, traditional control chart monitoring for biosurveillance is based on input data free of trends, day-of-week effects, and other systematic behaviour. Time series forecasting methods may be used to remove this behaviour by subtracting forecasts from observations to form residuals for algorithmic input. We describe three forecast methods and compare their predictive accuracy on each of 16 authentic syndromic data streams. The methods are (1) a non-adaptive regression model using a long historical baseline, (2) an adaptive regression model with a shorter, sliding baseline, and (3) the Holt-Winters method for generalized exponential smoothing. Criteria for comparing the forecasts were the root-mean-square error, the median absolute per cent error (MedAPE), and the median absolute deviation. The median-based criteria showed best overall performance for the Holt-Winters method. The MedAPE measures over the 16 test series averaged 16.5, 11.6, and 9.7 for the non-adaptive regression, adaptive regression, and Holt-Winters methods, respectively. The non-adaptive regression forecasts were degraded by changes in the data behaviour in the fixed baseline period used to compute model coefficients. The mean-based criterion was less conclusive because of the effects of poor forecasts on a small number of calendar holidays. The Holt-Winters method was also most effective at removing serial autocorrelation, with most 1-day-lag autocorrelation coefficients below 0.15. The forecast methods were compared without tuning them to the behaviour of individual series. We achieved improved predictions with such tuning of the Holt-Winters method, but practical use of such improvements for routine surveillance will require reliable data classification methods.
Picture archiving and communications system EFPACS series
International Nuclear Information System (INIS)
Hirasawa, Teiji; Mukasa, Minoru; Hiramatsu, Jun-ichi
1989-01-01
Fuji EFPACS (Effective Fuji PACS) is a picture archiving and communications system which efficiently executes centralized management of quantities of image data produced in a hospital. Main features of this system are high-speed retrieval and display function resulting from high-grade imaging technology. This system also strongly supports picture management for multi-modalities, picture storage, and education. EFPACS-500 and EFPACS-1000 series are available according to a system scale. An optimal system configuration can be obtained in a building-up style. This paper describes the features and performance of the EFPACS. (author)
From Taylor series to Taylor models
International Nuclear Information System (INIS)
Berz, Martin
1997-01-01
An overview of the background of Taylor series methods and the utilization of the differential algebraic structure is given, and various associated techniques are reviewed. The conventional Taylor methods are extended to allow for a rigorous treatment of bounds for the remainder of the expansion in a similarly universal way. Utilizing differential algebraic and functional analytic arguments on the set of Taylor models, arbitrary order integrators with rigorous remainder treatment are developed. The integrators can meet pre-specified accuracy requirements in a mathematically strict way, and are a stepping stone towards fully rigorous estimates of stability of repetitive systems
Energy coefficients for a propeller series
DEFF Research Database (Denmark)
Olsen, Anders Smærup
2004-01-01
The efficiency for a propeller is calculated by energy coefficients. These coefficients are related to four types of losses, i.e. the axial, the rotational, the frictional, and the finite blade number loss, and one gain, i.e. the axial gain. The energy coefficients are derived by use...... of the potential theory with the propeller modelled as an actuator disk. The efficiency based on the energy coefficients is calculated for a propeller series. The results show a good agreement between the efficiency based on the energy coefficients and the efficiency obtained by a vortex-lattice method....
Eisenstein series and automorphic l-functions
Shahidi, Freydoon
2010-01-01
This book presents a treatment of the theory of L-functions developed by means of the theory of Eisenstein series and their Fourier coefficients, a theory which is usually referred to as the Langlands-Shahidi method. The information gathered from this method, when combined with the converse theorems of Cogdell and Piatetski-Shapiro, has been quite sufficient in establishing a number of new cases of Langlands functoriality conjecture; at present, some of these cases cannot be obtained by any other method. These results have led to far-reaching new estimates for Hecke eigenvalues of Maass forms,
Estereotipos femeninos en series de TV
Directory of Open Access Journals (Sweden)
David Caldevilla Domínguez
2010-09-01
Full Text Available Hoy quiénes deciden cuáles series continúan en la televisión son los consejos de administración, en función de lo que consideran más rentable, para ello se persiguen dos metas: Atracción y Fidelización, que es la búsqueda de la ficción que quiere el espectador. Detalla las ficciones actuales y la tipología de los estereotipos.
Transvestism as a Symptom: A Case Series.
Anupama, M; Gangadhar, K H; Shetty, Vandana B; Dip, P Bhadja
2016-01-01
Transvestism, commonly termed as cross-dressing, means to dress in the clothing of opposite sex. We describe a series of three cases with transvestism as one of their primary complaints. The discussion sheds light on the various ways in which transvestism as a symptom can present in Psychiatry. In the first two cases, there was lower intelligence. In first and third case, there were other paraphilia along with transvestism. Second case had co-morbid obsessive-compulsive disorder (OCD) and had good response to selective serotonin reuptake inhibitor (SSRI).
Director`s series on proliferation
Energy Technology Data Exchange (ETDEWEB)
Bailey, K.C.; Price, M.E. [eds.
1994-12-27
The Director`s Series on Proliferation is an occasional publication of essays on the topics of nuclear, chemical, biological, and missile proliferation. The seven papers presented in this issue cover the following topics: Should the Treaty on the Nonproliferation of Nuclear Weapons (NPT) be amended?; NPT extension - Legal and procedural issues; An Indonesian view of NPT review conference issues; The treaty of Tlatelolco and the NPT - Tools for peace and development; Perspectives on cut-off, weapons dismantlement, and security assurances; Belarus and NPT challenges; A perspective on the chemical weapons convention - Lessons learned from the preparatory commission.
Fourier analysis of time series an introduction
Bloomfield, Peter
2000-01-01
A new, revised edition of a yet unrivaled work on frequency domain analysis Long recognized for his unique focus on frequency domain methods for the analysis of time series data as well as for his applied, easy-to-understand approach, Peter Bloomfield brings his well-known 1976 work thoroughly up to date. With a minimum of mathematics and an engaging, highly rewarding style, Bloomfield provides in-depth discussions of harmonic regression, harmonic analysis, complex demodulation, and spectrum analysis. All methods are clearly illustrated using examples of specific data sets, while ample
Report on series 2B reflood experiment
International Nuclear Information System (INIS)
Murao, Yoshio; Iguchi, Tadashi; Sudoh, Takashi; Sudo, Yukio; Sugimoto, Jun
1976-12-01
Series 2B reflood experiment was carried out from April to May 1975, as follows: 1) injection of coolant water from the downcomer at a constant head into the test section having a flow resistance simulator of the primary loop, 2) under an atmospheric pressure, 3) in constant power density, 4) with heater rod temperature up to 600 0 C. The objectives are to examine quantitatively system effect and to check performance of the reflood test rig. The effect of the coolant injection mode, relation between oscillatory phenomena and core thermo-hydrodynamics, and technological problems of the test rig were observed. (auth.)
Report on series 4 reflood experiment
International Nuclear Information System (INIS)
Murao, Yoshio; Iguchi, Tadashi; Sudoh, Takashi; Sudo, Yukio; Sugimoto, Jun
1977-03-01
Series 4 reflood experiment was carried out from June to July 1976. The purpose was to examine system-pressure effect and system effect with heater rods having about the same heat capacity as the real ones and flow resistance of the primary loop. The results are: 1) The core flood velocity increases and the quench time decreases with system pressure. 2) The relation between core differential pressure (accumulation head of the core) and core power density, which indicates coolability of the core, is obtainable in map with the system pressure as a parameter. 3) The steady-state thermal condition occurs in the test section with constant power density. (auth.)
Report on series 3 reflood experiment
International Nuclear Information System (INIS)
Murao, Yoshio; Iguchi, Tadashi; Sudoh, Takashi; Sudo, Yukio; Sugimoto, Jun
1977-03-01
Series 3 reflood experiment was carried out from December 1975 to January 1976. The purpose was to confirm temperature response and durability of the improved thermocouple installation and to examine system effect with parameters, flow housing temperature and primary loop flow resistance. The results are : 1) The improved thermocouples installation still has some problems, but is generally satisfactory up to 1000 0 C. 2) The flow housing temperature has large influence on the reflood phenomena, especially oscillation. 3) The primary loop resistance determines the flooding rate, and so influences the reflood phenomena. (auth.)
Estimating High-Dimensional Time Series Models
DEFF Research Database (Denmark)
Medeiros, Marcelo C.; Mendes, Eduardo F.
We study the asymptotic properties of the Adaptive LASSO (adaLASSO) in sparse, high-dimensional, linear time-series models. We assume both the number of covariates in the model and candidate variables can increase with the number of observations and the number of candidate variables is, possibly......, larger than the number of observations. We show the adaLASSO consistently chooses the relevant variables as the number of observations increases (model selection consistency), and has the oracle property, even when the errors are non-Gaussian and conditionally heteroskedastic. A simulation study shows...
Programmable pulse series generator for NMR relaxometer
International Nuclear Information System (INIS)
Stolbunov, R.N.; Chichikov, S.A.; Lundin, A.G.
2005-01-01
Paper describes a pulse series generator for NMR relaxometer. The operation mode is set on the basis of the PC program by the PCI bus in the internal memory. The design is based on two Altera Company MAX7000S and Cyclone family microcircuits using the Qartus II 4.0 software. The basic parameters are as follows: pulse minimum length - 50 ns, time resolution - 10 ns, pulse maximum number - 1024, number of controlled output channels - 8. The designed device as a part of the NMR hardware-software system enables to record, to process and to store the experiment results in the form of electronic document [ru
Inverse statistical approach in heartbeat time series
International Nuclear Information System (INIS)
Ebadi, H; Shirazi, A H; Mani, Ali R; Jafari, G R
2011-01-01
We present an investigation on heart cycle time series, using inverse statistical analysis, a concept borrowed from studying turbulence. Using this approach, we studied the distribution of the exit times needed to achieve a predefined level of heart rate alteration. Such analysis uncovers the most likely waiting time needed to reach a certain change in the rate of heart beat. This analysis showed a significant difference between the raw data and shuffled data, when the heart rate accelerates or decelerates to a rare event. We also report that inverse statistical analysis can distinguish between the electrocardiograms taken from healthy volunteers and patients with heart failure
From Taylor series to Taylor models
International Nuclear Information System (INIS)
Berz, M.
1997-01-01
An overview of the background of Taylor series methods and the utilization of the differential algebraic structure is given, and various associated techniques are reviewed. The conventional Taylor methods are extended to allow for a rigorous treatment of bounds for the remainder of the expansion in a similarly universal way. Utilizing differential algebraic and functional analytic arguments on the set of Taylor models, arbitrary order integrators with rigorous remainder treatment are developed. The integrators can meet pre-specified accuracy requirements in a mathematically strict way, and are a stepping stone towards fully rigorous estimates of stability of repetitive systems. copyright 1997 American Institute of Physics
Inferring causality from noisy time series data
DEFF Research Database (Denmark)
Mønster, Dan; Fusaroli, Riccardo; Tylén, Kristian
2016-01-01
Convergent Cross-Mapping (CCM) has shown high potential to perform causal inference in the absence of models. We assess the strengths and weaknesses of the method by varying coupling strength and noise levels in coupled logistic maps. We find that CCM fails to infer accurate coupling strength...... and even causality direction in synchronized time-series and in the presence of intermediate coupling. We find that the presence of noise deterministically reduces the level of cross-mapping fidelity, while the convergence rate exhibits higher levels of robustness. Finally, we propose that controlled noise...
Useful Pattern Mining on Time Series
DEFF Research Database (Denmark)
Goumatianos, Nikitas; Christou, Ioannis T; Lindgren, Peter
2013-01-01
We present the architecture of a “useful pattern” mining system that is capable of detecting thousands of different candlestick sequence patterns at the tick or any higher granularity levels. The system architecture is highly distributed and performs most of its highly compute-intensive aggregation...... calculations as complex but efficient distributed SQL queries on the relational databases that store the time-series. We present initial results from mining all frequent candlestick sequences with the characteristic property that when they occur then, with an average at least 60% probability, they signal a 2...
Energy Technology Data Exchange (ETDEWEB)
Roessler, F.; Buerkin, W. [Saphymo GmbH, Frankfurt am Main (Germany); Villert, J. [Bertin Technologies, Montigny (France)
2016-07-01
The company Saphymo GmbH has more than 25 years of experience in the field of radon measurement. More than 20 years ago Saphymo developed the professional and robust radon monitor AlphaGUARD, quickly recognized as a standard for reliable and continuous measurements of the radon concentration. Today AlphaGUARD is internationally established as the reference in radon measurement. Following up on this success story the new generation of AlphaGUARD can now be presented. Based on the excellent measurement characteristics of its predecessor the new AlphaGUARD combines the well-proven principle of the pulse ionisation chamber with new and additional features. The robust housing is oriented on the well-proven design of the predecessor and includes now an integrated flow controlled and powerful pump. The instrument can be operated in flow as well as in diffusion mode (without pump). Via the new large display and the intuitive menu navigation all measurement data can be retrieved. The presentation of time series in charts is possible as well as the parametrisation of the instrument. A wide range of accessories, developed in cooperation with various radon experts of universities and laboratories, enables the user a varied and flexible application of the AlphaGUARD: Measurement of the radon concentration in air (radon, thoron, radon progenies), in water (sampling and time resolved measurements) and in soil (soil gas measurements, exhalation measurements), emanation measurements from material, multi spot measurement, online measurement with remote data transmission via Ethernet/DSL, Bluetooth, Wi-Fi, GPRS/3G or satellite. Due to its high sensitivity and its fast and linear response over a large measuring range the AlphaGUARD is excellently suited for calibration laboratories. Furthermore the AlphaGUARD enables ideal prerequisites for field applications: robust housing for operations under harsh conditions, long battery life for the measurement at any location, low
French N4 Series Design and Manufacturing
International Nuclear Information System (INIS)
Lebreton, Gerard
1989-01-01
The construction contract for the first two N4 units. on the Chooz site close to the French-Belgian border (Chooz B1 and B2). was awarded by Electricite de France (EDF) to Fumarate in May 1984. At present, project construction is approximately 50% complete for unit B1. The main civil works are practically finished and the reactor vessel and the steam generator were delivered on site by mid-1988. The connection to the grid by 1991 appears quite feasible. Continuation of the French nuclear power programme in the 1990s, specifically on the CIVEX and Penly sites, is based on this model. The N4 thus follows the four-loop, 1,300 MW class series designated P.a. whose first unit is Cattenom 1, which will serve in the following as a reference to appreciate the design evolution of the N4 NSSS. The design evolutions selected to reach these objectives are in technical continuity with the previous series, integrate the vast experience gained within the French programme and abroad, and were supported by a large R and D programme and further by industrial qualification tests
Efficient multidimensional regularization for Volterra series estimation
Birpoutsoukis, Georgios; Csurcsia, Péter Zoltán; Schoukens, Johan
2018-05-01
This paper presents an efficient nonparametric time domain nonlinear system identification method. It is shown how truncated Volterra series models can be efficiently estimated without the need of long, transient-free measurements. The method is a novel extension of the regularization methods that have been developed for impulse response estimates of linear time invariant systems. To avoid the excessive memory needs in case of long measurements or large number of estimated parameters, a practical gradient-based estimation method is also provided, leading to the same numerical results as the proposed Volterra estimation method. Moreover, the transient effects in the simulated output are removed by a special regularization method based on the novel ideas of transient removal for Linear Time-Varying (LTV) systems. Combining the proposed methodologies, the nonparametric Volterra models of the cascaded water tanks benchmark are presented in this paper. The results for different scenarios varying from a simple Finite Impulse Response (FIR) model to a 3rd degree Volterra series with and without transient removal are compared and studied. It is clear that the obtained models capture the system dynamics when tested on a validation dataset, and their performance is comparable with the white-box (physical) models.
Analysis of JET ELMy time series
International Nuclear Information System (INIS)
Zvejnieks, G.; Kuzovkov, V.N.
2005-01-01
Full text: Achievement of the planned operational regime in the next generation tokamaks (such as ITER) still faces principal problems. One of the main challenges is obtaining the control of edge localized modes (ELMs), which should lead to both long plasma pulse times and reasonable divertor life time. In order to control ELMs the hypothesis was proposed by Degeling [1] that ELMs exhibit features of chaotic dynamics and thus a standard chaos control methods might be applicable. However, our findings which are based on the nonlinear autoregressive (NAR) model contradict this hypothesis for JET ELMy time-series. In turn, it means that ELM behavior is of a relaxation or random type. These conclusions coincide with our previous results obtained for ASDEX Upgrade time series [2]. [1] A.W. Degeling, Y.R. Martin, P.E. Bak, J. B.Lister, and X. Llobet, Plasma Phys. Control. Fusion 43, 1671 (2001). [2] G. Zvejnieks, V.N. Kuzovkov, O. Dumbrajs, A.W. Degeling, W. Suttrop, H. Urano, and H. Zohm, Physics of Plasmas 11, 5658 (2004)
On localization for double Fourier series
Goffman, Casper; Waterman, Daniel
1978-01-01
The localization theorems for Fourier series of functions of a single variable are classical and easy to prove. The situation is different for Fourier series of functions of several variables, even if one restricts consideration to rectangular, in particular square, partial sums. We show that the answer to the problem can be obtained by considering the notion of generalized bounded variation, which we introduced. Given a nondecreasing sequence {λn} of positive numbers such that Σ 1/λn diverges, a function g defined on an interval I of R1 is said to be of Λ-bounded variation (ΛBV) if Σ|g(an) — g(bn)|/λn converges for every sequence of nonoverlapping intervals (an, bn) [unk]I. If λn = n, we say that g is of harmonic bounded variation (HBV). The definition suitably modified can be extended to functions of several variables. We show that in the case of two variables the localization principle holds for rectangular partial sums if ΛBV = HBV, and that if ΛBV is not contained in HBV, then the localization principle does not hold for ΛBV even in the case of square partial sums. PMID:16592492
Anomaly on Superspace of Time Series Data
Capozziello, Salvatore; Pincak, Richard; Kanjamapornkul, Kabin
2017-11-01
We apply the G-theory and anomaly of ghost and antighost fields in the theory of supersymmetry to study a superspace over time series data for the detection of hidden general supply and demand equilibrium in the financial market. We provide proof of the existence of a general equilibrium point over 14 extradimensions of the new G-theory compared with the M-theory of the 11 dimensions model of Edward Witten. We found that the process of coupling between nonequilibrium and equilibrium spinor fields of expectation ghost fields in the superspace of time series data induces an infinitely long exact sequence of cohomology from a short exact sequence of moduli state space model. If we assume that the financial market is separated into two topological spaces of supply and demand as the D-brane and anti-D-brane model, then we can use a cohomology group to compute the stability of the market as a stable point of the general equilibrium of the interaction between D-branes of the market. We obtain the result that the general equilibrium will exist if and only if the 14th Batalin-Vilkovisky cohomology group with the negative dimensions underlying 14 major hidden factors influencing the market is zero.
Uranium series disequilibrium measurements at Mol, Belgium
International Nuclear Information System (INIS)
Ivanovich, M.; Wilkins, M.A.
1985-02-01
The contract just completed has funded two parallel uranium series disequilibrium studies and the aims of and the progress to completion of these studies are given in this report. The larger study was concerned with the measurement of uranium series disequilibrium in ground waters derived from sand layers above and below the Boom Clay formation in North East Belgium. The disequilibrium data are analysed in terms of uranium, thorium and radium isotopic geochemistries and in terms of water types and their mixing in the regional groundwater system. It is concluded that most sampled waters are mixtures of younger and older waters. No true old water end-members have been sampled. Simple considerations of the uranium isotopic data indicate that the longest residence times of the sampled waters are not much in excess of 1 to 10 x 10 3 y. Detailed mixing patterns could not be established from this limited data set particularly in the absence of more detailed modelling in conjunction with groundwater hydraulic pressure and flow direction data. (author)
Uranium series disequilibrium: Concepts and applications
International Nuclear Information System (INIS)
Ivanovich, M.
1994-01-01
During the past four decades it has been recognized that natural disruption of the U and Th decay chains, resulting in the separation of parent and daughter nuclides, occurs as a consequence of geochemical processes acting in the near-surface environment. This realization has lead to a rapid growth in the application of the naturally occurring radioactive disequilibria diversifying broadly to touch upon a wide spectrum of problems in earth sciences. This paper is a brief review of the subject and addresses a number of issues concerning (1) physico-chemical processes responsible for fractionation of radionuclides in the decay series, (2) the range of observed radioactive disequilibrium in nature, (3) implications in terms of relative mobilities of U, Th, Ra and their daughters in the geosphere, and (4) examples of the application of these concepts to studies of paleoclimate, dating of old groundwaters, and rock/water interaction processes. This review concludes that the concept of radioactive disequilibrium in naturally occurring decay series is a powerful isotopic tool with applications in both terrestrial and marine environments over timescales of up to one million years. (orig.)
Cyclo-speed reducer 6000 series; Saikuro {reg_sign} gensokuki 6000 series
Energy Technology Data Exchange (ETDEWEB)
NONE
2000-04-20
This series was put on the market as the advanced speed reducer '6000 series' in April, 2000 after further improvement of various previous excellent features by adopting innovative technologies. Various series of this cyclo-speed reducers adopting a unique inscribed epicyclic gear mechanism reach 7 million units in sales success. Main specifications: (1) Input capacity range: 0.1-132kW, (2) Output torque: 24-68,200N(center dot)m, (3) Reduction ratio: 6-1,000,000. Features: (1) High efficiency and long life by adopting the analysis system based on the latest analytical technology, (2) Noise reduction by a maximum of nearly 6dB, and tone improvement by adopting a new tooth profile, (3) Weight reduction by a maximum of nearly 40% by adopting a motor direct-coupled mechanism. (translated by NEDO)
Kushwaha, Jitendra Kumar
2013-01-01
Approximation theory is a very important field which has various applications in pure and applied mathematics. The present study deals with a new theorem on the approximation of functions of Lipschitz class by using Euler's mean of conjugate series of Fourier series. In this paper, the degree of approximation by using Euler's means of conjugate of functions belonging to Lip (ξ(t), p) class has been obtained. Lipα and Lip (α, p) classes are the particular cases of Lip (ξ(t), p) class. The main result of this paper generalizes some well-known results in this direction. PMID:24379744
Climate Prediction Center (CPC) Global Temperature Time Series
National Oceanic and Atmospheric Administration, Department of Commerce — The global temperature time series provides time series charts using station based observations of daily temperature. These charts provide information about the...
on some properties of the alternating sylvester series and alternating
African Journals Online (AJOL)
DJFLEX
. (iii) above is known in literature as the alternating Sylvester series while (iv) is known as the alternating Engel expansion (Kalpazidou and Ganatsiou (1991)). We are interested in studying the properties of these alternating series. Theorem 2: ...
Discontinuous conduction mode analysis of phase-modulated series ...
Indian Academy of Sciences (India)
modulated dc–dc series resonant converter (SRC) operating in discontinuous conduction mode (DCM). The conventional fundamental harmonic approximation technique is extended for a non-ideal series resonant tank to clarify the limitations of ...
Climate Prediction Center (CPC) Global Precipitation Time Series
National Oceanic and Atmospheric Administration, Department of Commerce — The global precipitation time series provides time series charts showing observations of daily precipitation as well as accumulated precipitation compared to normal...
Neural Network Predictions of the 4-Quadrant Wageningen Propeller Series
National Research Council Canada - National Science Library
Roddy, Robert F; Hess, David E; Faller, Will
2006-01-01
.... This report describes the development of feedforward neural network (FFNN) predictions of four-quadrant thrust and torque behavior for the Wageningen B-Screw Series of propellers and for two Wageningen ducted propeller series...
75 FR 55699 - Series LLCs and Cell Companies
2010-09-14
... organization, such as franchise fees or administrative costs) or of any other series of the series organization... the amount of State unemployment tax paid. In light of these issues, the proposed regulations do not...
Subroutine for series solutions of linear differential equations
International Nuclear Information System (INIS)
Tasso, H.; Steuerwald, J.
1976-02-01
A subroutine for Taylor series solutions of systems of ordinary linear differential equations is descriebed. It uses the old idea of Lie series but allows simple implementation and is time-saving for symbolic manipulations. (orig.) [de
Principle of natural and artificial radioactive series equivalency
International Nuclear Information System (INIS)
Vasilyeva, A.N.; Starkov, O.V.
2001-01-01
In the present paper one approach used under development of radioactive waste management conception is under consideration. This approach is based on the principle of natural and artificial radioactive series radiotoxic equivalency. The radioactivity of natural and artificial radioactive series has been calculated for 10 9 - years period. The toxicity evaluation for natural and artificial series has also been made. The correlation between natural radioactive series and their predecessors - actinides produced in thermal and fast reactors - has been considered. It has been shown that systematized reactor series data had great scientific significance and the principle of differential calculation of radiotoxicity was necessary to realize long-lived radioactive waste and uranium and thorium ore radiotoxicity equivalency conception. The calculations show that the execution of equivalency principle is possible for uranium series (4n+2, 4n+1). It is a problem for thorium. series. This principle is impracticable for neptunium series. (author)
Expansion of Sobolev functions in series in Laguerre polynomials
International Nuclear Information System (INIS)
Selyakov, K.I.
1985-01-01
The solution of the integral equation for the Sobolev functions is represented in the form of series in Laguerre polynomials. The coefficients of these series are simultaneously the coefficients of the power series for the Ambartsumyan-Chandrasekhar H functions. Infinite systems of linear algebraic equations with Toeplitz matrices are given for the coefficients of the series. Numerical results and approximate expressions are given for the case of isotropic scattering
The Librarian in Rowling’s Harry Potter Series
Freier, Mary P.
2014-01-01
In her article "The Librarian in Rowling's Harry Potter Series" Mary P. Freier discusses Hermione Granger's skills as a librarian and researcher which lead to the defeat of Lord Voldemort. In each novel in the series, Hermione's research provides the necessary information for the solving of the mystery. Throughout the series, Hermione proves to be the only character who can use books effectively without putting herself or others in danger. Hermione begins the series as a child who loves the l...
Foundations of Sequence-to-Sequence Modeling for Time Series
Kuznetsov, Vitaly; Mariet, Zelda
2018-01-01
The availability of large amounts of time series data, paired with the performance of deep-learning algorithms on a broad class of problems, has recently led to significant interest in the use of sequence-to-sequence models for time series forecasting. We provide the first theoretical analysis of this time series forecasting framework. We include a comparison of sequence-to-sequence modeling to classical time series models, and as such our theory can serve as a quantitative guide for practiti...
Reliability-Based Optimization of Series Systems of Parallel Systems
DEFF Research Database (Denmark)
Enevoldsen, I.; Sørensen, John Dalsgaard
1993-01-01
Reliability-based design of structural systems is considered. In particular, systems where the reliability model is a series system of parallel systems are treated. A sensitivity analysis for this class of problems is presented. Optimization problems with series systems of parallel systems...... optimization of series systems of parallel systems, but it is also efficient in reliability-based optimization of series systems in general....
Costationarity of Locally Stationary Time Series Using costat
Cardinali, Alessandro; Nason, Guy P.
2013-01-01
This article describes the R package costat. This package enables a user to (i) perform a test for time series stationarity; (ii) compute and plot time-localized autocovariances, and (iii) to determine and explore any costationary relationship between two locally stationary time series. Two locally stationary time series are said to be costationary if there exists two time-varying combination functions such that the linear combination of the two series with the functions produces another time...
Time series analysis of temporal networks
Sikdar, Sandipan; Ganguly, Niloy; Mukherjee, Animesh
2016-01-01
A common but an important feature of all real-world networks is that they are temporal in nature, i.e., the network structure changes over time. Due to this dynamic nature, it becomes difficult to propose suitable growth models that can explain the various important characteristic properties of these networks. In fact, in many application oriented studies only knowing these properties is sufficient. For instance, if one wishes to launch a targeted attack on a network, this can be done even without the knowledge of the full network structure; rather an estimate of some of the properties is sufficient enough to launch the attack. We, in this paper show that even if the network structure at a future time point is not available one can still manage to estimate its properties. We propose a novel method to map a temporal network to a set of time series instances, analyze them and using a standard forecast model of time series, try to predict the properties of a temporal network at a later time instance. To our aim, we consider eight properties such as number of active nodes, average degree, clustering coefficient etc. and apply our prediction framework on them. We mainly focus on the temporal network of human face-to-face contacts and observe that it represents a stochastic process with memory that can be modeled as Auto-Regressive-Integrated-Moving-Average (ARIMA). We use cross validation techniques to find the percentage accuracy of our predictions. An important observation is that the frequency domain properties of the time series obtained from spectrogram analysis could be used to refine the prediction framework by identifying beforehand the cases where the error in prediction is likely to be high. This leads to an improvement of 7.96% (for error level ≤20%) in prediction accuracy on an average across all datasets. As an application we show how such prediction scheme can be used to launch targeted attacks on temporal networks. Contribution to the Topical Issue
Hidden Markov Models for Time Series An Introduction Using R
Zucchini, Walter
2009-01-01
Illustrates the flexibility of HMMs as general-purpose models for time series data. This work presents an overview of HMMs for analyzing time series data, from continuous-valued, circular, and multivariate series to binary data, bounded and unbounded counts and categorical observations.
Effectiveness of firefly algorithm based neural network in time series ...
African Journals Online (AJOL)
Effectiveness of firefly algorithm based neural network in time series forecasting. ... In the experiments, three well known time series were used to evaluate the performance. Results obtained were compared with ... Keywords: Time series, Artificial Neural Network, Firefly Algorithm, Particle Swarm Optimization, Overfitting ...
Time Series Observations in the North Indian Ocean
Digital Repository Service at National Institute of Oceanography (India)
Shenoy, D.M.; Naik, H.; Kurian, S.; Naqvi, S.W.A.; Khare, N.
Ocean and the ongoing time series study (Candolim Time Series; CaTS) off Goa. In addition, this article also focuses on the new time series initiative in the Arabian Sea and the Bay of Bengal under Sustained Indian Ocean Biogeochemistry and Ecosystem...
On p-adic aspects of some perturbation series
International Nuclear Information System (INIS)
Dragovic, B.G.
1993-01-01
Series with factorial terms, which are of potential interest in quantum field theory and string theory, are considered. Divergent series in the real case are usually p-adic convergent. Using simple and number field invariant methods of summation, rational sums are obtained. Sums of the convergent and divergent counterparts of the same series are connected by adelic summability. 9 refs
Modeling of Volatility with Non-linear Time Series Model
Kim Song Yon; Kim Mun Chol
2013-01-01
In this paper, non-linear time series models are used to describe volatility in financial time series data. To describe volatility, two of the non-linear time series are combined into form TAR (Threshold Auto-Regressive Model) with AARCH (Asymmetric Auto-Regressive Conditional Heteroskedasticity) error term and its parameter estimation is studied.
The multiple Dirichlet product and the multiple Dirichlet series
Onozuka, Tomokazu
2016-01-01
First, we define the multiple Dirichlet product and study the properties of it. From those properties, we obtain a zero-free region of a multiple Dirichlet series and a multiple Dirichlet series expression of the reciprocal of a multiple Dirichlet series.
Seri Rama: converting a shadow play puppet to Street Fighter.
Ghani, D B A
2012-01-01
Shadow puppet plays, a traditional Malaysian theater art, is slowly losing its appeal to adolescents, who prefer computer games. To help reverse this decline, the authors incorporated the traditional Seri Rama character into the Street Fighter video game. Using modeling, texturing, and animation, they developed a 3D Seri Rama prototype. Users can control Seri Rama with a PlayStation game controller.
Vector bilinear autoregressive time series model and its superiority ...
African Journals Online (AJOL)
In this research, a vector bilinear autoregressive time series model was proposed and used to model three revenue series (X1, X2, X3) . The “orders” of the three series were identified on the basis of the distribution of autocorrelation and partial autocorrelation functions and were used to construct the vector bilinear models.
Spectral parameter power series representation for Hill's discriminant
International Nuclear Information System (INIS)
Khmelnytskaya, K.V.; Rosu, H.C.
2010-01-01
We establish a series representation of the Hill discriminant based on the spectral parameter power series (SPPS) recently introduced by Kravchenko. We also show the invariance of the Hill discriminant under a Darboux transformation and employing the Mathieu case the feasibility of this type of series for numerical calculations of the eigenspectrum.
Palmprint Verification Using Time Series Method
Directory of Open Access Journals (Sweden)
A. A. Ketut Agung Cahyawan Wiranatha
2013-11-01
Full Text Available The use of biometrics as an automatic recognition system is growing rapidly in solving security problems, palmprint is one of biometric system which often used. This paper used two steps in center of mass moment method for region of interest (ROI segmentation and apply the time series method combined with block window method as feature representation. Normalized Euclidean Distance is used to measure the similarity degrees of two feature vectors of palmprint. System testing is done using 500 samples palms, with 4 samples as the reference image and the 6 samples as test images. Experiment results show that this system can achieve a high performance with success rate about 97.33% (FNMR=1.67%, FMR=1.00 %, T=0.036.
Computations of Eisenstein series on Fuchsian groups
Avelin, Helen
2008-09-01
We present numerical investigations of the value distribution and distribution of Fourier coefficients of the Eisenstein series E(z;s) on arithmetic and non-arithmetic Fuchsian groups. Our numerics indicate a Gaussian limit value distribution for a real-valued rotation of E(z;s) as operatorname{Re} sD1/2 , operatorname{Im} sto infty and also, on non-arithmetic groups, a complex Gaussian limit distribution for E(z;s) when operatorname{Re} s>1/2 near 1/2 and operatorname{Im} sto infty , at least if we allow operatorname{Re} sto 1/2 at some rate. Furthermore, on non-arithmetic groups and for fixed s with operatorname{Re} s ge 1/2 near 1/2 , our numerics indicate a Gaussian limit distribution for the appropriately normalized Fourier coefficients.
Deconvolution of time series in the laboratory
John, Thomas; Pietschmann, Dirk; Becker, Volker; Wagner, Christian
2016-10-01
In this study, we present two practical applications of the deconvolution of time series in Fourier space. First, we reconstruct a filtered input signal of sound cards that has been heavily distorted by a built-in high-pass filter using a software approach. Using deconvolution, we can partially bypass the filter and extend the dynamic frequency range by two orders of magnitude. Second, we construct required input signals for a mechanical shaker in order to obtain arbitrary acceleration waveforms, referred to as feedforward control. For both situations, experimental and theoretical approaches are discussed to determine the system-dependent frequency response. Moreover, for the shaker, we propose a simple feedback loop as an extension to the feedforward control in order to handle nonlinearities of the system.
The transnational appeal of Danish TV series
DEFF Research Database (Denmark)
Jensen, Pia Majbritt
because it challenges existing theories on global media geography, import/export of audio-visual content, transnational media reception and the importance of transnational TV viewing. According to these theories, non-Anglophone audio-visual content rarely exports outside its geo-linguistic region...... – in Denmark’s case the Nordic region – because audiences in other regions would be too far removed culturally and linguistically, and hence feel alienated Similarly, theories on the consumption of audio-visual content have neglected transnational, ‘non-resident’, viewing – i.e. when audiences engage...... with audio-visual content removed from their own (cultural) context as would be the case with international audiences engaging with Danish series – and instead emphasized the importance of geo-linguistic, national or ‘resident’ viewing. Even in cases when transnational viewing has been theorized...
Bulletin KSNU. Natural science series, no. 1
International Nuclear Information System (INIS)
Mansurov, Z.A.
1997-01-01
This is the first issue of natural sciences series of Bulletin of Kazak State National University published in English. The objective of the publication is to make scientific ideas and pratical experience of scientists of the University available for the world wide scientific community. This set of articles reflects the curriculum of the University and includes papers on Mathematics, Physics, Chemistry, Biology and Geography. More specifically the papers deal with various aspects of relativity theory, gravitation and quantum mechanics; heat-mass transfer phenomena; physics of plasma; solid state physics and material sciences; theoretical and nuclear physics and physics of cosmic rays; chemistry of polymers; medical materials; oil chemistry and processing; physiology and biochemistry, genetics and biotechnology; assessment of anthroprogenic impact on environment and landscapes; environment friendly industry and agriculture, wise use of natural resources
Bulletin KSNU. Natural science series, no. 1
Energy Technology Data Exchange (ETDEWEB)
Mansurov, Z A [ed.
1998-12-31
This is the first issue of natural sciences series of Bulletin of Kazak State National University published in English. The objective of the publication is to make scientific ideas and pratical experience of scientists of the University available for the world wide scientific community. This set of articles reflects the curriculum of the University and includes papers on Mathematics, Physics, Chemistry, Biology and Geography. More specifically the papers deal with various aspects of relativity theory, gravitation and quantum mechanics; heat-mass transfer phenomena; physics of plasma; solid state physics and material sciences; theoretical and nuclear physics and physics of cosmic rays; chemistry of polymers; medical materials; oil chemistry and processing; physiology and biochemistry, genetics and biotechnology; assessment of anthroprogenic impact on environment and landscapes; environment friendly industry and agriculture, wise use of natural resources
Delusional Parasitosis : Series Of 25 Cases
Directory of Open Access Journals (Sweden)
Bhatia M S
1996-01-01
Full Text Available A series 25 cases of delusional parasitosis is being reported. There were three cases below 45 years, 12 cases between 46-45 years and 11 cases above 55 years of age, 64% cases were females. A majority of cases (92% had insidious onset. The duration of symptoms in all the cases (except one was 6 months or more. 13 cases presented with infestation with insects over body and 10 cases with insects crawling over scalp. There were three cases each with diabetes mellitus and leprosy. Three cased had dementia, 2 cases had depression and one case presented with trichotillomania. Pimozide was used in22 cases, amitriptyline in 2 cases and fluoxetine in one. 14 cases (52% showed complete remission while receiving drug, 8 cases showed partial improvement and 3 cases did not respond.
Report on series 2A reflood experiment
International Nuclear Information System (INIS)
Murao, Yoshio; Iguchi, Tadashi; Sudoh, Takashi; Sudo, Yukio; Sugimoto, Jun
1976-11-01
Series 2A reflood experiment was carried out from February to April 1975 to obtain thermo-hydrodynamic data during reflood phase of a typical PWR. The main test conditions are as follows: - direct water injection into the simulated core at constant flow rate - operation under an atmospheric pressure, and - temperature of heater rods up to 600 0 C. Study of the data showed that several heat transfer phases exist in the core, i.e. adiabatic, droplet-dispersed vapor flow, film boiling, quench, and nucleate boiling phase. The relation between heat transfer phases and heat transfer coefficients was discussed qualitatively, and the following phenomena were found out: Pressure oscillation exists in the core, and it has large influence upon heat transfer coeficient characteristic as well as heater rod surface temperature response, and the inlet water velocity influences the carry over fraction. (auth.)
Methods of solving sequence and series problems
Grigorieva, Ellina
2016-01-01
This book aims to dispel the mystery and fear experienced by students surrounding sequences, series, convergence, and their applications. The author, an accomplished female mathematician, achieves this by taking a problem solving approach, starting with fascinating problems and solving them step by step with clear explanations and illuminating diagrams. The reader will find the problems interesting, unusual, and fun, yet solved with the rigor expected in a competition. Some problems are taken directly from mathematics competitions, with the name and year of the exam provided for reference. Proof techniques are emphasized, with a variety of methods presented. The text aims to expand the mind of the reader by often presenting multiple ways to attack the same problem, as well as drawing connections with different fields of mathematics. Intuitive and visual arguments are presented alongside technical proofs to provide a well-rounded methodology. With nearly 300 problems including hints, answers, and solutions,Met...
Optimal control of two queues in series
International Nuclear Information System (INIS)
Moustafa, M.S.; Mohammed, R.M.
1994-08-01
In this paper we give a fairly complete survey of the available results on the control of arrival and service rates for both single queue and networks of queues. We also study two M/M/1 queues in series. At the first queue, the arrival and the service rates are chosen in pair from a finite set whenever the queue lengths at both queues change. Each choice has a switching cost depending on the chosen rates and the queue lengths. At the second queue, the arrival and the service rates are fixed. Our objective is to find a policy for dynamically choosing rates, based on the current rates and queues lengths that minimizes the expected total discounted cost over a finite horizon, numerical results are given. (author). 8 refs, 1 fig
The LHC Main Quadrupoles during Series Fabrication
Tortschanoff, Theodor; Durante, M; Hagen, P; Klein, U; Krischel, D; Payn, A; Rossi, L; Schellong, B; Schmidt, P; Simon, F; Schirm, K-M; Todesco, E
2006-01-01
By the end of August 2005 about 320 of the 400 main LHC quadrupole magnets have been fabricated and about 220 of them assembled into their cold masses, together with corrector magnets. About 130 of them have been cold tested in their cryostats and most of the quadrupoles exceeded their nominal excitation, i.e. 12,000 A, after no more than two training quenches. During this series fabrication, the quality of the magnets and cold masses was thoroughly monitored by means of warm magnetic field measurements, of strict geometrical checking, and of various electrical verifications. A number of modifications were introduced in order to improve the magnet fabrication, mainly correction of the coil geometry for achieving the specified field quality and measures for avoiding coil insulation problems. Further changes concern the electrical connectivity and insulation of instrumentation, and of the corrector magnets inside the cold masses. The contact resistances for the bus-bar connections to the quench protection diode...
Tool Wear Monitoring Using Time Series Analysis
Song, Dong Yeul; Ohara, Yasuhiro; Tamaki, Haruo; Suga, Masanobu
A tool wear monitoring approach considering the nonlinear behavior of cutting mechanism caused by tool wear and/or localized chipping is proposed, and its effectiveness is verified through the cutting experiment and actual turning machining. Moreover, the variation in the surface roughness of the machined workpiece is also discussed using this approach. In this approach, the residual error between the actually measured vibration signal and the estimated signal obtained from the time series model corresponding to dynamic model of cutting is introduced as the feature of diagnosis. Consequently, it is found that the early tool wear state (i.e. flank wear under 40µm) can be monitored, and also the optimal tool exchange time and the tool wear state for actual turning machining can be judged by this change in the residual error. Moreover, the variation of surface roughness Pz in the range of 3 to 8µm can be estimated by the monitoring of the residual error.
The SERI solar energy storage program
Copeland, R. J.; Wright, J. D.; Wyman, C. E.
1980-01-01
In support of the DOE thermal and chemical energy storage program, the solar energy storage program (SERI) provides research on advanced technologies, systems analyses, and assessments of thermal energy storage for solar applications in support of the Thermal and Chemical Energy Storage Program of the DOE Division of Energy Storage Systems. Currently, research is in progress on direct contact latent heat storage and thermochemical energy storage and transport. Systems analyses are being performed of thermal energy storage for solar thermal applications, and surveys and assessments are being prepared of thermal energy storage in solar applications. A ranking methodology for comparing thermal storage systems (performance and cost) is presented. Research in latent heat storage and thermochemical storage and transport is reported.
Using entropy to cut complex time series
Mertens, David; Poncela Casasnovas, Julia; Spring, Bonnie; Amaral, L. A. N.
2013-03-01
Using techniques from statistical physics, physicists have modeled and analyzed human phenomena varying from academic citation rates to disease spreading to vehicular traffic jams. The last decade's explosion of digital information and the growing ubiquity of smartphones has led to a wealth of human self-reported data. This wealth of data comes at a cost, including non-uniform sampling and statistically significant but physically insignificant correlations. In this talk I present our work using entropy to identify stationary sub-sequences of self-reported human weight from a weight management web site. Our entropic approach-inspired by the infomap network community detection algorithm-is far less biased by rare fluctuations than more traditional time series segmentation techniques. Supported by the Howard Hughes Medical Institute
The Knossos Od Series. An Epigraphical Study
DEFF Research Database (Denmark)
Nosch, Marie-Louise Bech
This study is an epigraphical investigation of the Linear B records from the West Wing in the palace of Knossos. Its focus is the group of 61 unclassified Od tablets with the ideogram for wool. The author presents a new classification of the Od tablets by identifying new sets, and by integrating...... unclassified Od tablets into existing Od sets or into other series recording wool, such as the two well known and thoroughly researched "bureaux", the textile and the sheep administration. Recent work by FIRTH on find-places has provided new insights for this study. In the present study, 29 prefix changes...... are suggested. Only few unclassified Od tablets, however, can be associated with the initial parts of textile production in which scribes 103 and 113 set targets and manage the production. Rather, many unclassified Od tablets belong to the final stages of the textile production, that is, the finishing...
SERI biomass program annual technical report: 1982
Energy Technology Data Exchange (ETDEWEB)
Bergeron, P.W.; Corder, R.E.; Hill, A.M.; Lindsey, H.; Lowenstein, M.Z.
1983-02-01
The biomass with which this report is concerned includes aquatic plants, which can be converted into liquid fuels and chemicals; organic wastes (crop residues as well as animal and municipal wastes), from which biogas can be produced via anerobic digestion; and organic or inorganic waste streams, from which hydrogen can be produced by photobiological processes. The Biomass Program Office supports research in three areas which, although distinct, all use living organisms to create the desired products. The Aquatic Species Program (ASP) supports research on organisms that are themselves processed into the final products, while the Anaerobic Digestion (ADP) and Photo/Biological Hydrogen Program (P/BHP) deals with organisms that transform waste streams into energy products. The P/BHP is also investigating systems using water as a feedstock and cell-free systems which do not utilize living organisms. This report summarizes the progress and research accomplishments of the SERI Biomass Program during FY 1982.
Normalizing the causality between time series
Liang, X. San
2015-08-01
Recently, a rigorous yet concise formula was derived to evaluate information flow, and hence the causality in a quantitative sense, between time series. To assess the importance of a resulting causality, it needs to be normalized. The normalization is achieved through distinguishing a Lyapunov exponent-like, one-dimensional phase-space stretching rate and a noise-to-signal ratio from the rate of information flow in the balance of the marginal entropy evolution of the flow recipient. It is verified with autoregressive models and applied to a real financial analysis problem. An unusually strong one-way causality is identified from IBM (International Business Machines Corporation) to GE (General Electric Company) in their early era, revealing to us an old story, which has almost faded into oblivion, about "Seven Dwarfs" competing with a giant for the mainframe computer market.
Time Series Based for Online Signature Verification
Directory of Open Access Journals (Sweden)
I Ketut Gede Darma Putra
2013-11-01
Full Text Available Signature verification system is to match the tested signature with a claimed signature. This paper proposes time series based for feature extraction method and dynamic time warping for match method. The system made by process of testing 900 signatures belong to 50 participants, 3 signatures for reference and 5 signatures from original user, simple imposters and trained imposters for signatures test. The final result system was tested with 50 participants with 3 references. This test obtained that system accuracy without imposters is 90,44897959% at threshold 44 with rejection errors (FNMR is 5,2% and acceptance errors (FMR is 4,35102%, when with imposters system accuracy is 80,1361% at threshold 27 with error rejection (FNMR is 15,6% and acceptance errors (average FMR is 4,263946%, with details as follows: acceptance errors is 0,391837%, acceptance errors simple imposters is 3,2% and acceptance errors trained imposters is 9,2%.
Prediction uncertainty in seasonal partial duration series
DEFF Research Database (Denmark)
Rasmussen, Peter Funder; Rosbjerg, Dan
1991-01-01
In order to obtain a good description of the exceedances in a partial duration series it is often necessary to divide the year into a number (2-4) of seasons. Hereby a stationary exceedance distribution can be maintained within each season. This type of seasonal models may, however, not be suitable...... for prediction purposes due to the large number of parameters required. In the particular case with exponentially distributed exceedances and Poissonian occurrence times the precision of the T year event estimator has been thoroughly examined considering both seasonal and nonseasonal models. The two......-seasonal probability density function of the T year event estimator has been deduced and used in the assessment of the precision of approximate moments. The nonseasonal approach covered both a total omission of seasonality by pooling data from different flood seasons and a discarding of nonsignificant season(s) before...
78 FR 69885 - AIM Growth Series (Invesco Growth Series), et al.; Notice of Application
2013-11-21
... delays or expenses is appropriate in the interest of the Subadvised Series' shareholders and will allow... shareholders, and does not involve a conflict of interest from which the Advisor or the Affiliated Sub-Advisor... with Wholly-Owned Sub-Advisors (as defined below) and non- affiliated sub-advisers without shareholder...
National Clearinghouse for Drug Abuse Information Selected Reference Series, Series 4, No. 1.
National Inst. on Drug Abuse (DHEW/PHS), Rockville, MD. National Clearinghouse for Drug Abuse Information.
This bibliography, which attempts to gather the significant research on the reproductive effects of the drugs of abuse, is one in a series prepared by the National Clearinghouse for Drug Abuse Information on subjects of topical interest. Selection of literature is based on its currency, its significance in the field, and its availability in local…
Extending "the Rubber Rope": Convergent Series, Divergent Series and the Integrating Factor
McCartney, Mark
2013-01-01
A well-known mathematical puzzle regarding a worm crawling along an elastic rope is considered. The resulting generalizations provide examples for use in a teaching context including applications of series summation, the use of the integrating factor for the solution of differential equations, and the evaluation of definite integrals. A number of…
EIA completes corrections to drilling estimates series
International Nuclear Information System (INIS)
Trapmann, W.; Shambaugh, P.
1998-01-01
The Energy Information Administration (EIA) has published monthly and annual estimates of US oil and gas drilling activity since 1978. These data are key information for many industry analysts, serving as a leading indicator of trends in the industry and a barometer of general industry status. They are assessed directly for trends, as well as in combination with other measures to assess the productivity and profitability of upstream industry operations. They are major reference points for federal and state policymakers. EIA does not itself collect drilling activity data. Instead, it relies on an external source for data on oil, bas, and dry well completions. These data are provided to EIA monthly on an as reported basis. During a recent effort to enhance EIA's well completion data system, the detection of unusual patterns in the well completion data as received led to an expanded examination of these data. Substantial discrepancies between the data as received by EIA and correct record counts since 1987 were identified. For total wells by year, the errors ranged up to more than 2,300 wells, 11% of the 1995 total, and the impact of these errors extended backward in time to at least the early 1980s. When the magnitude and extent of the as reported well completion data problem were confirmed, EIA suspended its publication and distribution of updated drilling data. EIA staff proceeded to acquire replacement files with the as reported records and then revise the statistical portion of its drilling data system to reflect the new information. The replacement files unfortunately also included erroneous data based on the improper allocation of wells between exploration and development. EIA has now resolved the two data problems and generated revised time series estimates for well completions and footage drilled. The paper describes the problems in the data, differences between the series, and maintaining future data quality
Culinary Grief Therapy: Cooking for One Series.
Nickrand, Heather L; Brock, Cara M
2017-02-01
Although loss of loved ones is a universal experience, individuals who experience this loss grieve in different ways. Complicated grief involves the development of trauma symptoms, such as flashbacks, anxiety, and fear associated with daily activities after a death that disrupts the healthy grieving process. Daily activities such as eating, meal planning, grocery shopping, managing finances, and household maintenance can become painful and isolating for those experiencing complicated grief. Cognitive behavioral therapy is used to address irrational beliefs, feelings of depression or anger, and avoidance or numbing behaviors with a goal of leading the individual to adapting to a life, which no longer includes the lost loved one. As part of the bereavement counseling program in a hospice, a need was identified in individuals who had lost loved ones and were having difficulty with adjusting to meal planning, grocery shopping, and cooking for one. To address this need for grief counseling centered on meal planning, grocery shopping, meal preparations, and eating meals alone, "Culinary Grief Therapy: Cooking for One Series" was developed with a local Culinary Arts Program. Partnering with a local community college culinary arts program, the Cooking for One Series provides an interactive venue for cognitive behavioral therapy centered on meal planning and meal times. Along with demonstrations and hands-on experiences, participants are engaged in bereavement counseling with hospice staff. Initial reactions to Culinary Grief Therapy have been positive. Many attendees have participated in multiple workshops, and the number of participants grows for each offering. Culinary Grief Therapy is a novel approach to the needs of those experiencing the loss of a loved one and may reduce or prevent complicated grief associated with meal planning, grocery shopping, and cooking for one.
Renaissance: Series of problems as varietas
Directory of Open Access Journals (Sweden)
Cifoletti Giovanna
2015-01-01
Full Text Available In the present paper I wish to discuss three texts published by two mathematical authors, Oronce Fine and his student Jean Borrel. These three texts are typical of the time and are examples of the transformation occurring in the genres of mathematical books. This had direct consequences on the ways and the purpose of presenting series of problems followed by further mathematical authors. Oronce Fine's contribution has been to present commercial problems as Euclidean problems on proportions, as well as to replace the university quadrivium by four practical disciplines: practical arithmetic, practical geometry, cosmography, sundials. The two books by his disciple Borrel reflect the view on mathematics promoted by Oronce Fine: we can recognize mathematics in every aspect of the world. Borrel is also very concerned with distinctions in the human world: variety in the Opera geometrica and in the Logistica corresponds to redefinition of professional roles according to Fine's program. In particular, Borrel wants to stress the role of a new category of mathematicians, specialized in the practical disciplines Fine taught at the Collège Royal, the geometers. They dealt with practical problems by using classical humanistic education and practical mathematics, exactly what jurists did: Through the crucial rhetorical notion of varietas he is able to illustrate, in the Opera geometrica, the multifarious mathematical competence required for jurists. Among geometers, Borrel distinguishes a group of people, the logisticians, dealing in particular with the computational side. The readership of his Logisticawas also, by and large, constituted by jurists. In fact many jurists were logisticians or needed competence in this art, and many logisticians had a training in law. The texts by the two authors examined here show a use of series of problems as varieties at two levels: the level of the presentation of examples for a rule, mostly in the main part of the text
Comparative study of series of solar radiation; Estudio comparativo de series de radiacion solar
Energy Technology Data Exchange (ETDEWEB)
Adaro, Agustin; Cesari, Daniela; Lema, Alba; Galimberti, Pablo; Barral, Jorge [Universidad Nacional de Rio Cuarto, (Argentina)
2000-07-01
In any team or solar device that it seeks to be designed and dedicated to the use of the solar energy it will be had the most appropriate information on the radiation levels. Being this source of dependent energy of the atmospheric and meteorological fluctuations, it is that requires have the information best regarding the quantity and variability of the available solar energy. A road is already the statistical treatment of the data available, so much of solar radiation as of hours of sun. This focus generates a lot of expectation for the biggest quantity in information regarding the hours of existent sun. This bigger information of hours of sun is due to that the mensurations are carried out with instruments called heliografos with a level of complexity and much smaller cost that the instruments of radiation mensuration. Among the heliografos the most used one is that of Campbell-Stokes, and it is the one that you had installed in most of the meteorological stations of Argentina and the World, for what the information of hours of sun is the one that more is plentiful. The present work has for objective to find an interrelation between the measured series of hours of sun and irradiation. The study is carried out using models of temporary series and the pattern of Angstrom-Page. The are carried out a study of the generation of radiation sequences using models of temporary series and the pattern of Angstrom-Page. They are carried out a study of the generation of radiation sequences using the concept of the Chains of Markov. Rio Cuarto's series are analyzed for being determined the transfer function among both series, and the values of global solar radiation are obtained for towns of the same region. They are the coefficients of Anstrom-Page's Equation for Rio Cuarto. They are the values monthly means for these two methods and results are compared. [Spanish] En cualquier equipo o dispositivo solar que pretenda ser disenado y destinado al aprovechamiento de
Time series modeling for syndromic surveillance
Directory of Open Access Journals (Sweden)
Mandl Kenneth D
2003-01-01
Full Text Available Abstract Background Emergency department (ED based syndromic surveillance systems identify abnormally high visit rates that may be an early signal of a bioterrorist attack. For example, an anthrax outbreak might first be detectable as an unusual increase in the number of patients reporting to the ED with respiratory symptoms. Reliably identifying these abnormal visit patterns requires a good understanding of the normal patterns of healthcare usage. Unfortunately, systematic methods for determining the expected number of (ED visits on a particular day have not yet been well established. We present here a generalized methodology for developing models of expected ED visit rates. Methods Using time-series methods, we developed robust models of ED utilization for the purpose of defining expected visit rates. The models were based on nearly a decade of historical data at a major metropolitan academic, tertiary care pediatric emergency department. The historical data were fit using trimmed-mean seasonal models, and additional models were fit with autoregressive integrated moving average (ARIMA residuals to account for recent trends in the data. The detection capabilities of the model were tested with simulated outbreaks. Results Models were built both for overall visits and for respiratory-related visits, classified according to the chief complaint recorded at the beginning of each visit. The mean absolute percentage error of the ARIMA models was 9.37% for overall visits and 27.54% for respiratory visits. A simple detection system based on the ARIMA model of overall visits was able to detect 7-day-long simulated outbreaks of 30 visits per day with 100% sensitivity and 97% specificity. Sensitivity decreased with outbreak size, dropping to 94% for outbreaks of 20 visits per day, and 57% for 10 visits per day, all while maintaining a 97% benchmark specificity. Conclusions Time series methods applied to historical ED utilization data are an important tool
DEFF Research Database (Denmark)
Madsen, Henrik; Rasmussen, Peter F.; Rosbjerg, Dan
1997-01-01
Two different models for analyzing extreme hydrologic events, based on, respectively, partial duration series (PDS) and annual maximum series (AMS), are compared. The PDS model assumes a generalized Pareto distribution for modeling threshold exceedances corresponding to a generalized extreme value......). In the case of ML estimation, the PDS model provides the most efficient T-year event estimator. In the cases of MOM and PWM estimation, the PDS model is generally preferable for negative shape parameters, whereas the AMS model yields the most efficient estimator for positive shape parameters. A comparison...... of the considered methods reveals that in general, one should use the PDS model with MOM estimation for negative shape parameters, the PDS model with exponentially distributed exceedances if the shape parameter is close to zero, the AMS model with MOM estimation for moderately positive shape parameters, and the PDS...
Digital front-end module (DFEM) series; Digital front end module (DFEM) series
Energy Technology Data Exchange (ETDEWEB)
NONE
2000-03-01
The digital front-end module (DFEM) is a module in which the processes ranging from the reception of digitally modulated radiofrequencies to the output of digital IF (Intermediate Frequency) signals or data streams are integrated. Beginning with a module for the MCNS (Multimedia Cable Network System) cable modem which was the first module in this business field approved by the Cable Labs, U.S., Toshiba has developed a series of DFEMs for various digital media for satellites, ground waves, and CATV (Cable Television) systems. The series is characterized by (1) the serialization of DFEMs compatible with various digital modulation techniques such as 8 PSK (Phase Shift Keying), OFDM (Orthogonal Frequency Division Multiplexing), and 256 QAM (Quadrature Amplitude Modulation), (2) easy connection with digital circuits thanks to the high shielding effect, and (3) the achievement of smaller size, higher performance, and lower power consumption. (translated by NEDO)
Effects of Hofmeister salt series on gluten network formation: Part I. Cation series.
Tuhumury, H C D; Small, D M; Day, L
2016-12-01
Different cationic salts were used to investigate the effects of the Hofmeister salt series on gluten network formation. The effects of cationic salts on wheat flour dough mixing properties, the rheological and the chemical properties of the gluten extracted from the dough with different respective salts, were investigated. The specific influence of different cationic salts on the gluten structure formation during dough mixing, compared to the sodium ion, were determined. The effects of different cations on dough and gluten of different flours mostly followed the Hofmeister series (NH4(+), K(+), Na(+), Mg(2+) and Ca(2+)). The impacts of cations on gluten structure and dough rheology at levels tested were relatively small. Therefore, the replacement of sodium from a technological standpoint is possible, particularly by monovalent cations such as NH4(+), or K(+). However the levels of replacement need to take into account sensory attributes of the cationic salts. Copyright © 2016 Elsevier Ltd. All rights reserved.
INSAR observations of the DPRK event series
Mellors, R. J.; Ford, S. R.; Walter, W. R.
2017-12-01
Interferometric synthetic aperture radar (INSAR) data have revealed signals associated with the recent DPRK events in 2016 and 2017. These signals include decorrelation and indications of subsidence. Both standard phase differences and amplitude offsets are calculated. We show results of INSAR analysis as conducted using C and L band data and investigate the causes of the decorrelation (e.g. subsidence, landslide, or spall) and compare the observed signal with numerical models of deformation and seismic observations. A time series approach is applied to constrain post-event deformation at the weeks to months' timescale. We compare the INSAR observations of the DPRK tests with previous observations of events at other source regions using ERS archive data, which revealed a variety of post-seismic signatures. The signatures are evaluated with respect to the known geology and causes, including long-term surface relaxation and possible groundwater/thermal effects. Particular focus is on the sites on Pahute and Rainier Mesa, which displayed long-term subsidence signals that extended for several years after the explosions. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. Lawrence Livermore National Security, LLC
Nilradicals of skew Hurwitz series of rings
Directory of Open Access Journals (Sweden)
Morteza Ahmadi
2015-05-01
Full Text Available For a ring endomorphism α of a ring R, Krempa called α a rigid endomorphism if aα(a=0 implies a = 0 for a in R. A ring R is called rigid if there exists a rigid endomorphism of R. In this paper, we extend the α-rigid property of a ring R to the upper nilradical N_r(R of R. For an endomorphism α and the upper nilradical N_r(R of a ring R, we introduce the condition (*: N_r(R is a α-ideal of R and aα(a in N_r(R implies a in N_r(R for a in R. We study characterizations of a ring R with an endomorphism α satisfying the condition (*, and we investigate their related properties. The connections between the upper nilradical of R and the upper nilradical of the skew Hurwitz series ring (HR,α of R are also investigated.
Development of ultrasonic instrument 'UT1000 Series'
International Nuclear Information System (INIS)
Ogura, Yukio; Ikeda, Toshimichi
1984-01-01
The ultrasonic flaw detectors with 'A-scope indication' have been frequently used as the means for confirming the soundness of structures and equipments, but there are problems in their operational, quantifying and recording capabilities. Recently, the digital ultrasonic measuring instrument of touch panel type ''UT 1000 Series'' has been developed, which resolves these problems by a single effort. This measuring instrument is that of portable type, which gives the digital output of measured results in real time only by lightly touching the peak point of an echo on the Brown tube. This instrument contains the rich software for measurement, and can measure the positions and dimensions of defects and the pressure on contact surfaces with high accuracy. 'A-scope indication' is the indication with an oscilloscope taking the intensity of echo and the propagation time of ultrasonic waves on the ordinate and abscissa, respectively. There are three types of the instrument, that is, for detecting defects, for measuring contact surface pressure and for both purposes. The size of the instrument is 240 mm width, 350 mm length and 175 mm height, and the weight is 8.5 kgf. The specification, function and features of the ultrasonic flaw detector, touch panel, gain setter, key board, microcomputer and others are reported. (Kako, I.)
Phase correlation of foreign exchange time series
Wu, Ming-Chya
2007-03-01
Correlation of foreign exchange rates in currency markets is investigated based on the empirical data of USD/DEM and USD/JPY exchange rates for a period from February 1 1986 to December 31 1996. The return of exchange time series is first decomposed into a number of intrinsic mode functions (IMFs) by the empirical mode decomposition method. The instantaneous phases of the resultant IMFs calculated by the Hilbert transform are then used to characterize the behaviors of pricing transmissions, and the correlation is probed by measuring the phase differences between two IMFs in the same order. From the distribution of phase differences, our results show explicitly that the correlations are stronger in daily time scale than in longer time scales. The demonstration for the correlations in periods of 1986-1989 and 1990-1993 indicates two exchange rates in the former period were more correlated than in the latter period. The result is consistent with the observations from the cross-correlation calculation.
Acute sirolimus overdose: a multicenter case series.
Directory of Open Access Journals (Sweden)
Alessandro Ceschi
Full Text Available There are few data relating to sirolimus overdose in the medical literature. Our objectives were to describe all cases of overdose with sirolimus reported to Swiss, German and Austrian Poisons Centres between 2002-2013.An observational case-series analysis was performed to determine circumstances, magnitude, management and outcome of sirolimus overdose.Five cases of acute sirolimus overdose were reported--three in young children and two in adults. Four were accidental and one was with suicidal intent. Two patients developed symptoms probably related to sirolimus overdose: mild elevation of alkaline phosphatase, fever and gastroenteritis in a 2.5-year-old male who ingested 3 mg, and mild changes in total cholesterol in an 18-year-old female after ingestion of 103 mg. None of these events were life-threatening. Serial blood concentration measurements were performed starting 24 h after ingestion of 103 mg in a single case, and these followed a similar pharmacokinetic time-course to measurements taken after dosing in the therapeutic range.Acute sirolimus overdose occurred accidentally in the majority of cases. Even large overdoses appeared to be well-tolerated, however children might be at greater risk of developing complications. Further study of sirolimus overdose is needed.
An Evaluation of American English File Series
Directory of Open Access Journals (Sweden)
Behnam Ghasemi
2012-03-01
Full Text Available Textbooks play a pivotal role in language learning classrooms. The problem is that among a wide range of textbooks in market which is appropriate for a specific classroom and a group of learners. In order to evaluate ELT textbooks theorists and writers have offered different kinds of evaluative frameworks based on a number of principles and criteria. This study evaluates a series of ELT textbook, namely, American English File by the use of Littlejohn’s (1998 evaluative framework to see what explicit features of the book are, what pedagogic values it has, whether it is in line with its claimed objectives, and what its merits and demerits are. Littlejohn believes that we should evaluate a textbook based on its own pedagogic values and we should see what is in it not what teacher and evaluators think must exist in it. Consequently his framework is claimed to be devoid of any impressionistic ideas and it is in-depth and objective rather than being subjective. Nine ELT experts and ten ELT teachers helped the researcher rate the evaluative checklists. The results of the study show that although a number of shortcomings and drawbacks were found in American English File, it stood up reasonably well to a detailed and in-depth analysis and that its pedagogic values and positive attributes far out-weighed its shortcomings. The internal consistency between ratings was computed via the statistical tool of Cronbach’s alpha that indicated a desirable inter-rater reliability.
Ortner's syndrome: case series and literature review.
Subramaniam, Vijayalakshmi; Herle, Adarsha; Mohammed, Navisha; Thahir, Muhammad
2011-01-01
More than a century ago, Ortner described a case of cardiovocal syndrome wherein he attributed a case of left vocal fold immobility to compression of the recurrent laryngeal nerve by a dilated left atrium in a patient with mitral valve stenosis. Since then, the term Ortner's syndrome has come to encompass any nonmalignant, cardiac, intrathoracic process that results in embarrassment of either recurrent laryngeal nerve-usually by stretching, pulling, or compression; and causes vocal fold paralysis. Not surprisingly, the left recurrent laryngeal nerve, with its longer course around the aortic arch, is more frequently involved than the right nerve, which passes around the subclavian artery. To discuss the pathogenesis of hoarseness resulting from cardiovascular disorders involving the recurrent laryngeal nerve along with the findings of literature review. This paper reports a series of four cases of Ortner's syndrome occurring due to different causes. Case study. Ortner's syndrome could be a cause of hoarseness of voice in patients with cardiovascular diseases. Although hoarseness of voice is frequently encountered in the Otolaryngology outpatient department, cardiovascular- related hoarseness is an unusual presentation. Indirect laryngoscopy should be routinely performed in all cases of heart disease.
Fisher information framework for time series modeling
Venkatesan, R. C.; Plastino, A.
2017-08-01
A robust prediction model invoking the Takens embedding theorem, whose working hypothesis is obtained via an inference procedure based on the minimum Fisher information principle, is presented. The coefficients of the ansatz, central to the working hypothesis satisfy a time independent Schrödinger-like equation in a vector setting. The inference of (i) the probability density function of the coefficients of the working hypothesis and (ii) the establishing of constraint driven pseudo-inverse condition for the modeling phase of the prediction scheme, is made, for the case of normal distributions, with the aid of the quantum mechanical virial theorem. The well-known reciprocity relations and the associated Legendre transform structure for the Fisher information measure (FIM, hereafter)-based model in a vector setting (with least square constraints) are self-consistently derived. These relations are demonstrated to yield an intriguing form of the FIM for the modeling phase, which defines the working hypothesis, solely in terms of the observed data. Cases for prediction employing time series' obtained from the: (i) the Mackey-Glass delay-differential equation, (ii) one ECG signal from the MIT-Beth Israel Deaconess Hospital (MIT-BIH) cardiac arrhythmia database, and (iii) one ECG signal from the Creighton University ventricular tachyarrhythmia database. The ECG samples were obtained from the Physionet online repository. These examples demonstrate the efficiency of the prediction model. Numerical examples for exemplary cases are provided.
Remote technology: a series of articles
International Nuclear Information System (INIS)
Meieran, H.B.
1987-01-01
A series of articles on the use of remote technology in the nuclear industry. A worldwide survey of mobile robots suitable for actual or proposed use in nuclear facilities is presented. Details are given of the first Robot Users Group, recently formed in the U.S.A. Robots with artificial intelligence are under development at Tokyo Electric Power Company. Kansai Electric Power and Toshiba are two companies conducting RandD to further the application of robots. Westinghouse have used the Rosa robotic arm in zero-entry steam generator tube sleeving projects, and are now looking at further developments. The 'Warrior' manipulator, by Taylot Hitec, has conducted the first continuous path MIG weld inside a magnox reactor. The articulated boom for the JET fusion device can lift 1t. at full extension. The Savannah River Laboratory is studying an advanced intelligent machine which could lead to the introduction of legged mobile and multi-tasking teleoperated work stations. Plans are being made to equip the Surveyor mobile surveillance system at Nine Mile Point with a number of tools. Frastar, developed by Framatome, is a vehicle which can operate inside the containment of a reactor in operation or in hazardous areas. The mobile surveillance robot, Surbot, developed by Remotec, has successfully completed five months of testing at Browns Ferry BWR. (author)
The Java Series. GUI Building with Swing
CERN. Geneva
2000-01-01
The Swing Java package contains all the components that you expect to see in a modern User Interface, from buttons that contain pictures to trees and grids. It is a big library but it's designed to have the appropriate complexity for the task at hand - if something is simple you don't have to write much code to get it done, but if you want the power to manipulate and deeply customise it you also have it. This tutorial will introduce you to the basic set of components that Swing provides and to the mechanisms behind them. It will provide an overview of what you can do with Swing, even if you are new to GUI programming. However, if you want to follow closely the mechanisms behind what's being explained, it is convenient to have some basic knowledge of the main concepts of Java AWT (class hierarchy and event model) as provided by the previous tutorial of the Java Series. Organiser(s): M.Marquina and R.Ramos /IT-User Support
Series lecture on advanced fusion reactors
International Nuclear Information System (INIS)
Dawson, J.M.
1983-01-01
The problems concerning fusion reactors are presented and discussed in this series lecture. At first, the D-T tokamak is explained. The breeding of tritium and the radioactive property of tritium are discussed. The hybrid reactor is explained as an example of the direct use of neutrons. Some advanced fuel reactions are proposed. It is necessary to make physics consideration for burning advanced fuel in reactors. The rate of energy production and the energy loss are important things. The bremsstrahlung radiation and impurity radiation are explained. The simple estimation of the synchrotron radiation was performed. The numerical results were compared with a more detailed calculation of Taimor, and the agreement was quite good. The calculation of ion and electron temperature was made. The idea to use the energy more efficiently is that one can take X-ray or neutrons, and pass them through a first wall of a reactor into a second region where they heat the material. A method to convert high temperature into useful energy is the third problem of this lecture. The device was invented by A. Hertzberg. The lifetime of the reactor depends on the efficiency of energy recovery. The idea of using spin polarized nuclei has come up. The spin polarization gives a chance to achieve a large multiplication factor. The advanced fuel which looks easiest to make go is D plus He-3. The idea of multipole is presented to reduce the magnetic field inside plasma, and discussed. Two other topics are explained. (Kato, T.)
Robust Force Control of Series Elastic Actuators
Directory of Open Access Journals (Sweden)
Andrea Calanca
2014-07-01
Full Text Available Force-controlled series elastic actuators (SEA are widely used in novel human-robot interaction (HRI applications, such as assistive and rehabilitation robotics. These systems are characterized by the presence of the “human in the loop”, so that control response and stability depend on uncertain human dynamics, including reflexes and voluntary forces. This paper proposes a force control approach that guarantees the stability and robustness of the coupled human-robot system, based on sliding-mode control (SMC, considering the human dynamics as a disturbance to reject. We propose a chattering free solution that employs simple task models to obtain high performance, comparable with second order solutions. Theoretical stability is proven within the sliding mode framework, and predictability is reached by avoiding the reaching phase by design. Furthermore, safety is introduced by a proper design of the sliding surface. The practical feasibility of the approach is shown using an SEA prototype coupled with a human impedance in severe stress tests. To show the quality of the approach, we report a comparison with state-of-the-art second order SMC, passivity-based control and adaptive control solutions.