Regional reference values of thyroid gland volume in Turkish Adults.

Science.gov (United States)

Şahin, Ertan; Elboğa, Umut; Kalender, Ebuzer

2015-01-01

It is important to know the size of the thyroid gland, and its normal value may vary among different geographic regions. In this study, we aimed to establish reference ranges for thyroid volume in euthyroid adults and to compare these results with the literature data. Between June 2011 and June 2012,461 patients with normal laboratory results (serum TSH, anti-TG, anti-TPO antibodies and urine iodine level) that underwent thyroid gland ultrasound examination were retrospectively analyzed.Two hundred and 92 patients were females and 169 were males; the age range was 18-61 years with mean age 30.84±9.97 years. Length, breadth and thickness were measured, and the volume of each lobe was estimated using the ellipsoid formula. The overall mean thyroid volume in all patients who were examined was 12.98±2.53 mL. The mean thyroid volume in females and males was 12.09±2.05 mL and 14.53±2.55, respectively (pbody surface area of the subjects of both sexes (pcountry.

Reference values for total blood volume and cardiac output in humans

Energy Technology Data Exchange (ETDEWEB)

Williams, L.R. [Indiana Univ., South Bend, IN (United States). Division of Liberal Arts and Sciences

1994-09-01

Much research has been devoted to measurement of total blood volume (TBV) and cardiac output (CO) in humans but not enough effort has been devoted to collection and reduction of results for the purpose of deriving typical or {open_quotes}reference{close_quotes} values. Identification of normal values for TBV and CO is needed not only for clinical evaluations but also for the development of biokinetic models for ultra-short-lived radionuclides used in nuclear medicine (Leggett and Williams 1989). The purpose of this report is to offer reference values for TBV and CO, along with estimates of the associated uncertainties that arise from intra- and inter-subject variation, errors in measurement techniques, and other sources. Reference values are derived for basal supine CO and TBV in reference adult humans, and differences associated with age, sex, body size, body position, exercise, and other circumstances are discussed.

Utilization of Reference Books by Students: A Case Study of Covenant University, Nigeria

Directory of Open Access Journals (Sweden)

Julie E. Ilogho

2012-12-01

Full Text Available This study assessed the utilization of reference books by final-year students of Covenant University, Nigeria with a view to providing valuable data to help students to get a better orientation on the use and importance of reference sources for their research work, to guide instructors and teachers on the use of library, information retrieval processes and information literacy, and to help University management, policy-makers and other stakeholders to make appropriate policies concerning the acquisitions of library materials. The survey method of research was adopted for the study. The simple random sampling technique was used in choosing the study population. The respondents for the questionnaire, interview and focus group discussion were chosen from the 400- and 500-level undergraduate students at the Covenant University. 300 copies of the questionnaires were administered to respondents. A focus group discussion was conducted with 30 participants. And 18 students were interviewed. It was revealed that students prefer online resources, which accounts for the poor usage of the hardcopy reference materials. It is, therefore, recommended that the library should intensify its information literacy skills program in order to help users maximize online reference resources. At the same time, the library should acquire more online reference sources rather than buying hard copies for a few users.

Evaluating College Students' Displayed Alcohol References on Facebook and Twitter.

Science.gov (United States)

Moreno, Megan A; Arseniev-Koehler, Alina; Litt, Dana; Christakis, Dimitri

2016-05-01

Current trends suggest that adolescents and young adults typically maintain a social media "portfolio" of several sites including Facebook and Twitter, but little is known regarding how an individual chooses to display risk behaviors across these different sites. The purpose of this study was to investigate college students' displayed alcohol references on both Facebook and Twitter. Among a larger sample of college students from two universities, we identified participants who maintained both Facebook and Twitter profiles. Data collection included evaluation of 5 months of participants' Facebook and Twitter posts for alcohol references, number of social connections (i.e., friends or followers), and number of posts. Phone interviews assessed participants' frequency of Facebook and Twitter use and self-reported alcohol use. Analyses included Fisher's exact test, Wilcoxon matched pair sign test, Friedman rank-sum tests, and logistic regression. Of 112 eligible participants, 94 completed the study. Participants were more likely to display alcohol references on Facebook compared with those on Twitter (76% vs. 34%, p = .02). Participants reported more social connections on Facebook versus Twitter (average 801.2 friends vs. 189.4 followers, p Twitter (94.6% vs. 50%, p Twitter displayed alcohol references, but mediators differed in each model. College students were more likely to display alcohol references on Facebook compared with those on Twitter. Understanding these patterns and predictors may inform prevention and intervention efforts directed at particular social media sites. Copyright © 2016 Society for Adolescent Health and Medicine. Published by Elsevier Inc. All rights reserved.

Visualizing Volume to Help Students Understand the Disk Method on Calculus Integral Course

Science.gov (United States)

Tasman, F.; Ahmad, D.

2018-04-01

Many research shown that students have difficulty in understanding the concepts of integral calculus. Therefore this research is interested in designing a classroom activity integrated with design research method to assist students in understanding the integrals concept especially in calculating the volume of rotary objects using disc method. In order to support student development in understanding integral concepts, this research tries to use realistic mathematical approach by integrating geogebra software. First year university student who takes a calculus course (approximately 30 people) was chosen to implement the classroom activity that has been designed. The results of retrospective analysis show that visualizing volume of rotary objects using geogebra software can assist the student in understanding the disc method as one way of calculating the volume of a rotary object.

Reference Management Practices of Postgraduate Students and Academic Researchers are Highly Individualized

Directory of Open Access Journals (Sweden)

Kimberly Miller

2016-09-01

Full Text Available A Review of: Melles, A., & Unsworth, K. (2015. Examining the reference management practices of humanities and social science postgraduate students and academics. Australian Academic & Research Libraries, 46(4, 250-276. http://dx.doi.org/10.1080/00048623.2015.1104790 Objective – To understand patterns in reference management practices of postgraduate students and faculty members at one institution. Design – Mixed methods online survey and semi-structured interviews. Setting – Public research university in Australia. Subjects – The survey included responses from 81 postgraduate students. Semi-structured interviews were conducted with 8 postgraduate students and 13 faculty members. Methods – The researchers distributed an 18-item survey via email to approximately 800 people who previously registered for EndNote training sessions. Survey participants were also recruited via a website advertisement. The researchers recruited postgraduate student interview participants from the list of survey respondents. Librarians invited faculty members to participate in the semi-structured interviews. Interview audio recordings were transcribed and coded for data analysis. Main Results – The survey found that 71.4% (n=55 of respondents used reference management software (RMS and 29% (n=22 did not. Over half of the students who did not use an RMS described other ad hoc or “manual” (p. 255 methods for organizing and tracking references. The majority of participants reported using EndNote (67.53%, n=52, while few respondents reported using other RMS tools like Zotero (1.3%, n=1 or Mendeley (1.3%, n = 1. Software awareness (49.32%, n=36, recommendations from faculty members (30.14%, n=22, and University support (47.95%, n=35 were the primary motivations for choosing a specific RMS. Other important factors included ease of use (32.88%, n=24 and integration with Microsoft Word (46.58%, n=34. Students preferred RMS features that support the process of

A new large-volume metal reference standard for radioactive waste management.

Science.gov (United States)

Tzika, F; Hult, M; Stroh, H; Marissens, G; Arnold, D; Burda, O; Kovář, P; Suran, J; Listkowska, A; Tyminski, Z

2016-03-01

A new large-volume metal reference standard has been developed. The intended use is for calibration of free-release radioactivity measurement systems and is made up of cast iron tubes placed inside a box of the size of a Euro-pallet (80 × 120 cm). The tubes contain certified activity concentrations of (60)Co (0.290 ± 0.006 Bq g(-1)) and (110m)Ag (3.05 ± 0.09 Bq g(-1)) (reference date: 30 September 2013). They were produced using centrifugal casting from a smelt into which (60)Co was first added and then one piece of neutron irradiated silver wire was progressively diluted. The iron castings were machined to the desirable dimensions. The final material consists of 12 iron tubes of 20 cm outer diameter, 17.6 cm inner diameter, 40 cm length/height and 245.9 kg total mass. This paper describes the reference standard and the process of determining the reference activity values. © The Author 2015. Published by Oxford University Press.

New reference charts for testicular volume in Dutch children and adolescents allow the calculation of standard deviation scores.

Science.gov (United States)

Joustra, Sjoerd D; van der Plas, Evelyn M; Goede, Joery; Oostdijk, Wilma; Delemarre-van de Waal, Henriette A; Hack, Wilfried W M; van Buuren, Stef; Wit, Jan M

2015-06-01

Accurate calculations of testicular volume standard deviation (SD) scores are not currently available. We constructed LMS-smoothed age-reference charts for testicular volume in healthy boys. The LMS method was used to calculate reference data, based on testicular volumes from ultrasonography and Prader orchidometer of 769 healthy Dutch boys aged 6 months to 19 years. We also explored the association between testicular growth and pubic hair development, and data were compared to orchidometric testicular volumes from the 1997 Dutch nationwide growth study. The LMS-smoothed reference charts showed that no revision of the definition of normal onset of male puberty - from nine to 14 years of age - was warranted. In healthy boys, the pubic hair stage SD scores corresponded with testicular volume SD scores (r = 0.394). However, testes were relatively small for pubic hair stage in Klinefelter's syndrome and relatively large in immunoglobulin superfamily member 1 deficiency syndrome. The age-corrected SD scores for testicular volume will aid in the diagnosis and follow-up of abnormalities in the timing and progression of male puberty and in research evaluations. The SD scores can be compared with pubic hair SD scores to identify discrepancies between cell functions that result in relative microorchidism or macroorchidism. ©2015 Foundation Acta Paediatrica. Published by John Wiley & Sons Ltd.

Reference book for the nitrogen industry worker in two volumes, volume 1

Science.gov (United States)

1982-05-01

The first volume presents the physical and chemical properties of gaseous and liquid substances used and obtained at the nitrogen industry enterprises. It describes the different methods for producing and purifying production gases (nitrogen-hydrogen mixture, gas synthesis). It examines the physical and chemical properties of the processes of amonia and methanol synthesis, the industrial plans and the principles for automating them. Certain methods are given for technological calculations, characteristics of the catalysts are presented, and the employed equipment is described. It is designed for engineering-technical workers of enterprises of the nitrogen and other sectors of industry, for specialists working in the scientific research and planning institutes, design offices and other organizations, as well as for teachers of higher educational institutions and students specializing in the field of the technology of inorganic products.

Partial molar volume of proteins studied by the three-dimensional reference interaction site model theory.

Science.gov (United States)

Imai, Takashi; Kovalenko, Andriy; Hirata, Fumio

2005-04-14

The three-dimensional reference interaction site model (3D-RISM) theory is applied to the analysis of hydration effects on the partial molar volume of proteins. For the native structure of some proteins, the partial molar volume is decomposed into geometric and hydration contributions using the 3D-RISM theory combined with the geometric volume calculation. The hydration contributions are correlated with the surface properties of the protein. The thermal volume, which is the volume of voids around the protein induced by the thermal fluctuation of water molecules, is directly proportional to the accessible surface area of the protein. The interaction volume, which is the contribution of electrostatic interactions between the protein and water molecules, is apparently governed by the charged atomic groups on the protein surface. The polar atomic groups do not make any contribution to the interaction volume. The volume differences between low- and high-pressure structures of lysozyme are also analyzed by the present method.

Qualitative Characteristics of Coherence, Substitution, and Reference by Non-English Major Chinese Students

Science.gov (United States)

Shen, Ying

2010-01-01

This study addresses the interrelation among coherence, substitution, and reference by non-English major Chinese students. The author collected data through student questionnaires. Participants included 30 non-English major Chinese undergraduate students. The findings of this study suggested that the similarities and differences were confirmed…

In-Situ Systematic Error Correction for Digital Volume Correlation Using a Reference Sample

KAUST Repository

Wang, B.

2017-11-27

The self-heating effect of a laboratory X-ray computed tomography (CT) scanner causes slight change in its imaging geometry, which induces translation and dilatation (i.e., artificial displacement and strain) in reconstructed volume images recorded at different times. To realize high-accuracy internal full-field deformation measurements using digital volume correlation (DVC), these artificial displacements and strains associated with unstable CT imaging must be eliminated. In this work, an effective and easily implemented reference sample compensation (RSC) method is proposed for in-situ systematic error correction in DVC. The proposed method utilizes a stationary reference sample, which is placed beside the test sample to record the artificial displacement fields caused by the self-heating effect of CT scanners. The detected displacement fields are then fitted by a parametric polynomial model, which is used to remove the unwanted artificial deformations in the test sample. Rescan tests of a stationary sample and real uniaxial compression tests performed on copper foam specimens demonstrate the accuracy, efficacy, and practicality of the presented RSC method.

In-Situ Systematic Error Correction for Digital Volume Correlation Using a Reference Sample

KAUST Repository

Wang, B.; Pan, B.; Lubineau, Gilles

2017-01-01

The self-heating effect of a laboratory X-ray computed tomography (CT) scanner causes slight change in its imaging geometry, which induces translation and dilatation (i.e., artificial displacement and strain) in reconstructed volume images recorded at different times. To realize high-accuracy internal full-field deformation measurements using digital volume correlation (DVC), these artificial displacements and strains associated with unstable CT imaging must be eliminated. In this work, an effective and easily implemented reference sample compensation (RSC) method is proposed for in-situ systematic error correction in DVC. The proposed method utilizes a stationary reference sample, which is placed beside the test sample to record the artificial displacement fields caused by the self-heating effect of CT scanners. The detected displacement fields are then fitted by a parametric polynomial model, which is used to remove the unwanted artificial deformations in the test sample. Rescan tests of a stationary sample and real uniaxial compression tests performed on copper foam specimens demonstrate the accuracy, efficacy, and practicality of the presented RSC method.

Assessment of minute volume of lung in NPP workers for Korean reference man

International Nuclear Information System (INIS)

Lee, Y. J.; Song, S. H.; Lee, J.; Jin, Y. W.; Yim, Y. K.; Kim, J. S.

2001-01-01

To formulation of the reference Korean for radiation protection purpose, we measured the forced vital capacity(FVC), forced expiratory volume in second(FEVI), minute ventilation(MV) of Nuclear Power Plant workers using SP-1 Spirometry Unit(Schiller AG. 1998) and eatimated the liters of breathed for working and resting, also compared these data with ICRP 23

Assessment of minute volume of lung in NPP workers for Korean reference man

Energy Technology Data Exchange (ETDEWEB)

Lee, Y. J.; Song, S. H.; Lee, J.; Jin, Y. W.; Yim, Y. K.; Kim, J. S. [KNETEC, Seoul (Korea, Republic of)

2001-05-01

To formulation of the reference Korean for radiation protection purpose, we measured the forced vital capacity(FVC), forced expiratory volume in second(FEVI), minute ventilation(MV) of Nuclear Power Plant workers using SP-1 Spirometry Unit(Schiller AG. 1998) and eatimated the liters of breathed for working and resting, also compared these data with ICRP 23.

Total reference air kerma can accurately predict isodose surface volumes in cervix cancer brachytherapy. A multicenter study

DEFF Research Database (Denmark)

Nkiwane, Karen S; Andersen, Else; Champoudry, Jerome

2017-01-01

PURPOSE: To demonstrate that V60 Gy, V75 Gy, and V85 Gy isodose surface volumes can be accurately estimated from total reference air kerma (TRAK) in cervix cancer MRI-guided brachytherapy (BT). METHODS AND MATERIALS: 60 Gy, 75 Gy, and 85 Gy isodose surface volumes levels were obtained from treatm...

Effluent-Monitoring Procedures: Basic Laboratory Skills. Student Reference Manual.

Science.gov (United States)

Engel, William T.; And Others

This is one of several short-term courses developed to assist in the training of waste water treatment plant operational personnel in the tests, measurements, and report preparation required for compliance with their NPDES Permits. This Student Reference Manual provides a review of basic mathematics as it applies to the chemical laboratory. The…

Quantum mechanics two volumes bound as one

CERN Document Server

Messiah, Albert

2014-01-01

""Strongly recommended"" by the American Journal of Physics, this volume serves as a text for advanced undergraduates and graduate students of physics as well as a reference for professionals. Clear in its presentation and scrupulous in its attention to detail, the treatment originally appeared in a two-volume French edition. This convenient single-volume translation begins with formalism and its interpretation, starting with the origins of quantum theory and examinations of matter waves and the Schrödinger equation, one-dimensional quantized systems, the uncertainty relations, and the mathema

ARL Summer Student Research Symposium Volume I: Select Presentations

Science.gov (United States)

2017-06-01

papers to an audience of ARL scientists and engineers, including the ARL Director and an ARL Fellows panel. This volume of the Summer Student Symposium...program. As an integral part of their summer study, all students are required to write a paper on their work which summarizes their major activity and its...end product. The program is conducted on two separate competitive levels: undergraduate and graduate. The format of the paper in both levels is the

STUDENT, REFERENCE THE INSPECTORATE OF EDUCATION

Directory of Open Access Journals (Sweden)

José Luis Castán Esteban

2014-06-01

Full Text Available This paper presenting a reflection on the work of the Inspectorate of Education from 1990 until LOGSE currently focusing on three aspects: A critical analysis of the low prestige of the Education Inspectorate and poor contribution to the quality of the system education to be centered in the administration and counseling, and have forgotten or delegate aspects of the evaluation. Secondly raise the central reference Inspectorate of Education should not be the focus and organization, but must be the student. And so it should be changed with the inspector's professional profile and increase its presence in the classroom. His training and selection has to be focused on teaching, methodology and subject areas, which is the dimension that most affects the quality of teaching.

Life satisfaction and its correlates among college students in China: a test of social reference theory.

Science.gov (United States)

Zhang, Jie; Zhao, Sibo; Lester, David; Zhou, Chengchao

2014-08-01

To study life satisfaction and to test the role of social reference in determining the degree of life satisfaction, we examined a large sample of undergraduate students in China for the correlates of campus life satisfaction. A questionnaire survey was administered at a university and the final sample consisted of 439 respondents aged between 17 and 24 years, from all over the country, and studying different subjects. It was found that freshman students tended to score higher on their life satisfaction than students in other grades and the college students' life satisfaction was positively related to female gender, self-esteem, social support, and the liberal attitudes on female gender roles, but negatively correlated with depression and suicidal ideation. Contrary to common beliefs, students from an urban area or from better-off families were not necessarily more satisfied with current life than those students coming from the countryside or low income families. The findings were accounted for by the social reference theory and in this case college students' campus life satisfaction is basically affected by their pre-college life quality as a reference. Copyright © 2013 Elsevier B.V. All rights reserved.

Student's vacation travel: a reference dependent model of airline fares preferences

NARCIS (Netherlands)

Grigolon, A.B.; Kemperman, A.D.A.M.; Timmermans, H.J.P.

2012-01-01

This article reports the results of student vacation travel choice analysis using a reference dependent model of airline fare preferences. Findings suggests, as expected, that the preferences/utility decreases with increasing levels of cost. The evaluation of the airfare, however, becomes

The Learning Outcomes of Mentoring Library Science Students in Virtual World Reference: A Case Study

Science.gov (United States)

Purpur, Geraldine; Morris, Jon Levi

2015-01-01

This article reports on the cognitive and affective development of students being mentored in virtual reference interview skills by professional librarians. The authors present a case study which examines the impact on student learning resulting from librarian mentor participation and collaboration with students on a course assignment. This study…

Agricultural Marketing. Student Reference. Volume 12, Number 10. Agdex 810, Catalog Number AG-81-S.

Science.gov (United States)

Denker, Robert

This student guide in agricultural marketing is designed to accompany the lessons in the curriculum unit, "Instructor's Guide in Agricultural Marketing" (CE 025 683). There are six sections in the student guide: (1) Introduction to Marketing; (2) Marketing Cash Grains; (3) Marketing Grain with a Protected Price; (4) Marketing Cash Livestock; (5)…

Reframing Student Affairs Leadership: An Analysis of Organizational Frames of Reference and Locus of Control

Science.gov (United States)

Tull, Ashley; Freeman, Jerrid P.

2011-01-01

Examined in this study were the identified frames of reference and locus of control used by 478 student affairs administrators. Administrator responses were examined to identify frames of reference most commonly used and their preference order. Locus of control most commonly used and the relationship between frames of reference and locus of…

Normal reference values for vertebral artery flow volume by color Doppler sonography in Korean adults

Energy Technology Data Exchange (ETDEWEB)

Hong, Hyun Sook; Cha, Jang Gyu; Park, Seong Jin; Joh, Joon Hee; Park, Jai Soung; Kim, Dae Ho; Lee, Hae Kyung; Ahn, Hyun Cheol [Soonchunhyang University Bucheon Hospital, Bucheon (Korea, Republic of)

2003-09-15

Vertebrobasilar ischemia has been attributed to a reduction of net vertebral artery flow volume. This study was to establish the reference values for the flow volume of the vertebral artery using color Doppler sonography in the normal Korea adults. Thirty five normal Korea adults without any underlying disease including hypertension, hyperlipidemia, diabetes, heart disease, obesity (body mas index>30), or carotid artery stenosis was included. There were 17 males and 18 females, age ranged from 20 to 53 years (average=32.86 years). Flow velocities and vessel diameters were recorded in the intertransverse (V2) segment, usually at C5-6 level, bilaterally. The flow volume (Q) was calculated. (Q=time averaged mean velocity x cross sectional area of vessel) A lower Flow velocity and smaller vessel diameter were measured on the right side compared to those of the left side, resulting in a lower flow volume. The calculated flow volumes using the equation were 77.0 +- 39.7 ml/min for the right side and 127.6 +- 71.0 ml/min for the left side (p=0.0001) while the net vertebral artery flow volume was 204.6 +- 81.8 ml/min. Decrease in the vertebral artery flow volume was statistically significant with advanced age. (r=-0.36, p=0.032). Vertebral artery blood flow volume was 191.20 +- 59.19 ml/min in male, and 217.28 +- 98.67 ml/min in female (p=0.6). The normal range for the net vertebral artery flow volume defined by the 5th to 95th percentiles was between 110.06 and 364.1 ml/min. The normal range for the net vertebral artery flow volume was between 110.06 and 364.1 ml/min. Vertebral artery flow volume decreased with the increase of age. However, gender did not affect the blood flow volume.

Normal reference values for vertebral artery flow volume by color Doppler sonography in Korean adults

International Nuclear Information System (INIS)

Hong, Hyun Sook; Cha, Jang Gyu; Park, Seong Jin; Joh, Joon Hee; Park, Jai Soung; Kim, Dae Ho; Lee, Hae Kyung; Ahn, Hyun Cheol

2003-01-01

Vertebrobasilar ischemia has been attributed to a reduction of net vertebral artery flow volume. This study was to establish the reference values for the flow volume of the vertebral artery using color Doppler sonography in the normal Korea adults. Thirty five normal Korea adults without any underlying disease including hypertension, hyperlipidemia, diabetes, heart disease, obesity (body mas index>30), or carotid artery stenosis was included. There were 17 males and 18 females, age ranged from 20 to 53 years (average=32.86 years). Flow velocities and vessel diameters were recorded in the intertransverse (V2) segment, usually at C5-6 level, bilaterally. The flow volume (Q) was calculated. (Q=time averaged mean velocity x cross sectional area of vessel) A lower Flow velocity and smaller vessel diameter were measured on the right side compared to those of the left side, resulting in a lower flow volume. The calculated flow volumes using the equation were 77.0 ± 39.7 ml/min for the right side and 127.6 ± 71.0 ml/min for the left side (p=0.0001) while the net vertebral artery flow volume was 204.6 ± 81.8 ml/min. Decrease in the vertebral artery flow volume was statistically significant with advanced age. (r=-0.36, p=0.032). Vertebral artery blood flow volume was 191.20 ± 59.19 ml/min in male, and 217.28 ± 98.67 ml/min in female (p=0.6). The normal range for the net vertebral artery flow volume defined by the 5th to 95th percentiles was between 110.06 and 364.1 ml/min. The normal range for the net vertebral artery flow volume was between 110.06 and 364.1 ml/min. Vertebral artery flow volume decreased with the increase of age. However, gender did not affect the blood flow volume.

Exploring students' understanding of reference frames and time in Galilean and special relativity

International Nuclear Information System (INIS)

De Hosson, C; Kermen, I; Parizot, E

2010-01-01

This paper aims at exploring prospective physics teachers' reasoning associated with the concepts of reference frame, time and event which form the framework of the classical kinematics and that of the relativistic kinematics. About 100 prospective physics teachers were surveyed by means of a questionnaire involving classical kinematics situations and relativistic ones. The analysis of the answers shows a deep lack of understanding of both concepts of reference frame and event. Some students think that events may be simultaneous for an observer and not simultaneous for another one, even when both observers are located in the same reference frame. Most of the students surveyed cannot give an answer only depending on the location of the observer when his/her velocity is mentioned as if the movement contaminated the event. This lack of understanding is embodied in reasoning implemented by the population surveyed to address classical kinematics questions and seems to form a major obstacle to grasping relativistic kinematics.

Reference absolute and indexed values for left and right ventricular volume, function and mass from cardiac computed tomography

International Nuclear Information System (INIS)

Stojanovska, Jadranka; Prasitdumrong, Hutsaya; Patel, Smita; Sundaram, Baskaran; Gross, Barry H.; Yilmaz, Zeynep N.; Kazerooni, Ella A.

2014-01-01

Left ventricular (LV) and right ventricular (RV) volumetric and functional parameters are important biomarkers for morbidity and mortality in patients with heart failure. To retrospectively determine reference mean values of LV and RV volume, function and mass normalised by age, gender and body surface area (BSA) from retrospectively electrocardiographically gated 64-slice cardiac computed tomography (CCT) by using automated analysis software in healthy adults. The study was approved by the institutional review board with a waiver of informed consent. Seventy-four healthy subjects (49% female, mean age 49.6±11) free of hypertension and hypercholesterolaemia with a normal CCT formed the study population. Analyses of LV and RV volume (end-diastolic, end-systolic and stroke volumes), function (ejection fraction), LV mass and inter-rater reproducibility were performed with commercially available analysis software capable of automated contour detection. General linear model analysis was performed to assess statistical significance by age group after adjustment for gender and BSA. Bland–Altman analysis assessed the inter-rater agreement. The reference range for LV and RV volume, function, and LV mass was normalised to age, gender and BSA. Statistically significant differences were noted between genders in both LV mass and RV volume (P-value<0.0001). Age, in concert with gender, was associated with significant differences in RV end-diastolic volume and LV ejection fraction (P-values 0.027 and 0.03). Bland–Altman analysis showed acceptable limits of agreement (±1.5% for ejection fraction) without systematic error. LV and RV volume, function and mass normalised to age, gender and BSA can be reported from CCT datasets, providing additional information important for patient management.

Effectiveness of Asynchronous Reference Services for Distance Learning Students within Florida's Community College System

Science.gov (United States)

Profeta, Patricia C.

2007-01-01

The provision of equitable library services to distance learning students emerged as a critical area during the 1990s. Library services available to distance learning students included digital reference and instructional services, remote access to online research tools, database and research tutorials, interlibrary loan, and document delivery.…

Using Technology to Improve Student Learning. NCREL Viewpoints, Volume 12

Science.gov (United States)

Gahala, Jan, Ed.

2004-01-01

"Viewpoints" is a multimedia package containing two audio CDs and a short, informative booklet. This volume of "Viewpoints" focuses on how technology can help improve student learning. The audio CDs provide the voices, or viewpoints, of various leaders from the education field who work closely with technology issues. Their…

Experimental teaching and training system based on volume holographic storage

Science.gov (United States)

Jiang, Zhuqing; Wang, Zhe; Sun, Chan; Cui, Yutong; Wan, Yuhong; Zou, Rufei

2017-08-01

The experiment of volume holographic storage for teaching and training the practical ability of senior students in Applied Physics is introduced. The students can learn to use advanced optoelectronic devices and the automatic control means via this experiment, and further understand the theoretical knowledge of optical information processing and photonics disciplines that have been studied in some courses. In the experiment, multiplexing holographic recording and readout is based on Bragg selectivity of volume holographic grating, in which Bragg diffraction angle is dependent on grating-recording angel. By using different interference angle between reference and object beams, the holograms can be recorded into photorefractive crystal, and then the object images can be read out from these holograms via angular addressing by using the original reference beam. In this system, the experimental data acquisition and the control of the optoelectronic devices, such as the shutter on-off, image loaded in SLM and image acquisition of a CCD sensor, are automatically realized by using LabVIEW programming.

The scientifical aprehension about student on Portugal education (1880-1900: epistemological references

Directory of Open Access Journals (Sweden)

Maria Cristina Soares de Gouveia

2012-02-01

Full Text Available The papper analyses the emergence of a cientific knowledege about the student, during the XIX century, student defined according to his generation identity. In this sense, we focus an national context (Portugal and a specifically historical period (last decades of the century. The primary sources were the pedagogical magazines, that was used as strategical vehicule of scientific knowledge difusion, teacher education and improvement of pedagogical experts powerty. The cientificist perspective, refered to Spencer s positivist model of science, characterized the magazine. Into this perspective, is possible to identify the epistemological references of the cientific discourses about the individual development, that changed during the period. If in the first numbers of the vehicule, Comtes historical perspective of understanding the individual development was central, gradually lost its importance. The higienism, recorring to the concept of race to understand and quantificate the fisiological characters of the students turned to be the most important knowledge about the individual developmet, racially defined. So, the reserach demonstrate the tension beetwen race and history on the knowledge production about individual, cultural and social phenomenous during the XIX century, specially on investigations about individual development.

New conformity indices based on the calculation of distances between the target volume and the volume of reference isodose

Science.gov (United States)

Park, J M; Park, S-Y; Ye, S-J; Kim, J H; Carlson, J

2014-01-01

Objective: To present conformity indices (CIs) based on the distance differences between the target volume (TV) and the volume of reference isodose (VRI). Methods: The points on the three-dimensional surfaces of the TV and the VRI were generated. Then, the averaged distances between the points on the TV and the VRI were calculated (CIdistance). The performance of the presented CIs were evaluated by analysing six situations, which were a perfect match, an expansion and a reduction of the distance from the centroid to the VRI compared with the distance from the centroid to the TV by 10%, a lateral shift of the VRI by 3 cm, a rotation of the VRI by 45° and a spherical-shaped VRI having the same volume as the TV. The presented CIs were applied to the clinical prostate and head and neck (H&N) plans. Results: For the perfect match, CIdistance was 0 with 0 as the standard deviation (SD). When expanding and reducing, CIdistance was 10 and −10 with SDs 11. The average value of the CIdistance in the prostate and H&N plans was 0.13 ± 7.44 and 6.04 ± 23.27, respectively. Conclusion: The performance of the CIdistance was equal or better than those of the conventional CIs. Advances in knowledge: The evaluation of target conformity by the distances between the surface of the TV and the VRI could be more accurate than evaluation with volume information. PMID:25225915

Skeletal and total body volumes of human fetuses: assessment of reference data by spiral CT

International Nuclear Information System (INIS)

Braillon, Pierre M.; Buenerd, Annie; Bouvier, Raymonde; Lapillonne, Alexandre

2002-01-01

Objective: To define reference data for skeletal and total body volumes of normal human fetuses. Materials and methods: Spiral CT was used to assess the skeletal and total body volumes of 31 normal human stillborn infants with gestational age (GA) and body weight (BW) ranging from 14 to 41.5 weeks and 22 to 3,760 g, respectively. CT scans (slice thickness 2.7 mm, pitch 0.7) were performed within the first 24 h after delivery. Precise bone and soft-tissue windows were defined from analysis of the density along the diaphysis of the fetal long bones and from the measurement of a phantom that mimics soft tissues. Lengths and volumes were obtained from 3D reconstructions. The femur lengths measured from CT images (FLct) were compared with those provided by US studies (FLus). Results: Significant correlations (r>0.9) were found between BW, measured volumes of the entire skeleton or head, long-bone lengths, biparietal diameter and GA. Strong linear correlations (r>0.98) were observed between FLct and FLus. Conclusions: Skeletal and total body volume values obtained using spiral CT were significantly correlated with fetal biometric measurements. These data could complement those obtained in obstetric investigations with US. (orig.)

Sexpectations: male college students' views about displayed sexual references on females' social networking web sites.

Science.gov (United States)

Moreno, Megan A; Swanson, Michael J; Royer, Heather; Roberts, Linda J

2011-04-01

Sexual reference display on a social networking web site (SNS) is associated with self-reported sexual intention; females are more likely to display sexually explicit content on SNSs. The purpose of this study was to investigate male college students' views towards sexual references displayed on publicly available SNSs by females. Focus groups. One large state university. Male college students age 18-23. All tape recorded discussion was fully transcribed, then discussed to determine thematic consensus. A trained male facilitator asked participants about views on sexual references displayed on SNSs by female peers and showed examples of sexual references from female's SNS profiles to facilitate discussion. A total of 28 heterosexual male participants participated in seven focus groups. Nearly all participants reported using Facebook to evaluate potential female partners. Three themes emerged from our data. First, participants reported that displays of sexual references on social networking web sites increased sexual expectations. Second, sexual reference display decreased interest in pursuing a dating relationship. Third, SNS data was acknowledged as imperfect but valuable. Females who display sexual references on publicly available SNS profiles may be influencing potential partners' sexual expectations and dating intentions. Future research should examine females' motivations and beliefs about displaying such references and educate women about the potential impact of these sexual displays. Copyright © 2011 North American Society for Pediatric and Adolescent Gynecology. Published by Elsevier Inc. All rights reserved.

Pediatric blood volumes: a one-page reference guide.

Science.gov (United States)

Smiley, J; Reitan, J

1998-10-01

At our institution, a multidisciplinary team met to work out a blood volume policy for our pediatric patients' laboratory testing. Because we are a cancer center, many of our patients are on protocols and/or are in the hospital for an extended period of time. These factors result in multiple blood draws. It is important to manage the volumes used so that we do not compromise the hematological status of our pediatric patients. The concerns of nurses and laboratory technologists were discussed and a three-tiered system was designed consisting of adult volumes, volumes for inflexibility to verify or add to the original order without resticking the patient increase at each tier. It is imperative to the overall quality of care for all patients that discretion is used when following these guidelines. When it is medically prudent to restrict the blood volumes taken from any patient, it should be done. However, when it is not medically necessary, the increased costs and potential decrease in the quality of laboratory service outweighs the desire to use smaller blood volumes.

Chinese students studying at Australian universities with specific reference to nursing students: a narrative literature review.

Science.gov (United States)

Wang, Carol Chunfeng; Andre, Kate; Greenwood, Kenneth Mark

2015-04-01

To report the current knowledge on the Chinese nursing students' learning at Australian universities. The intent is to provide educators and researchers with a background to the contexts, the methodologies, the emphases of various relevant studies, and to provide recommendations for future research. Attracting international students has become an important part of Australian universities' business and contributes to their cultural diversity. Teaching international students has received considerable attention in the educational research literature. Experiences of international students can vary greatly depending on their country of origin. This paper critically reviews current literature relating to issues for Chinese students and in particular, Chinese nursing students, the biggest single group of international nursing students at Australian universities Narrative literature review. A comprehensive search of seven electronic databases for literature between 2003 and 2014 helped to identify qualitative and quantitative studies that addressed issues of Asian international students with English as a second language (ESL) (included nursing students) studying in Australia, New Zealand, the UK, the United States and China. Pertinent websites were also searched. The reference lists and bibliographies of retrieved articles were hand- searched to identify other relevant studies. Fifteen studies met the inclusion criteria for the review. The majority of existing literature claimed that there is a range of challenges confronting international students including Chinese nursing students, in assimilation into their host country. These include issues with English language proficiency, cultural barriers, social problems, different learning styles, academic demands, perceived racism, homesickness, lack of assertiveness and financial problems. There is limited research about the Chinese students' study in Australia. In particular, the learning experience of Chinese nursing students

Semantic, executive, and visuospatial abilities in mathematical reasoning of referred college students.

Science.gov (United States)

Cirino, Paul T; Morris, Mary K; Morris, Robin D

2007-03-01

Semantic retrieval (SR) and executive-procedural (EP), but not visuospatial (VS) skills, have been found to be uniquely predictive of mathematical calculation skills in a sample of clinically referred college students. This study set out to cross-validate these results in an independent sample of clinically referred college students (N = 337) as well as extend them by examination of the contributions of these cognitive domains to math reasoning skills. Results indicate that these cognitive domains were able to predict 30% of the variance in calculation skills and 50% of the variance in math reasoning; however, in both cases, only the domains of semantic retrieval and visuospatial skill contributed uniquely. Differences between studies, and the lack of unique contribution of the EP domain to either type of math skill, may be due to measurement and sampling differences, the degree of shared relations among domains, and the choice of measures that represent the EP domain. Implications and future directions are explored.

Using a Virtual Manipulative Environment to Support Students' Organizational Structuring of Volume Units

Science.gov (United States)

O'Dell, Jenna R.; Barrett, Jeffrey E.; Cullen, Craig J.; Rupnow, Theodore J.; Clements, Douglas H.; Sarama, Julie; Rutherford, George; Beck, Pamela S.

2017-01-01

In this study, we investigated how Grade 3 and 4 students' organizational structure for volume units develops through repeated experiences with a virtual manipulative for building prisms. Our data consist of taped clinical interviews within a micro-genetic experiment. We report on student strategy development using a virtual manipulative for…

Selective bibliography of surface coal mining and reclamation literature. Volume 1. Eastern coal province. [More than 1300 references

Energy Technology Data Exchange (ETDEWEB)

Weiss, N. E.; Sobek, A. A.; Streib, D. L.

1977-11-01

This bibliography has been compiled for use by researchers, students, and other groups who need a reference source of published literature related to surface coal mining and reclamation in the Eastern Coal Province. This bibliography contains more than 1300 references including government reports, journal articles, symposium proceedings, industrial reports, workshop proceedings, theses, and bibliographices. A simple format was used to categorize citations.

Doing the work of reference practical tips for excelling as a reference librarian

CERN Document Server

Katz, Linda S

2013-01-01

Become more versatile, competent, and resourceful with these practical suggestions!Becoming a first-class reference librarian demands proficiency in a wide range of skills. Doing the Work of Reference offers sound advice for the full spectrum of your responsibilities. Though many aspects of a reference librarian's work are changing with astonishing speed, the classic principles in this volume will never go out of date. This comprehensive volume begins with hints for orienting yourself to a new job and concludes with ideas for serving the profession. On the way, Doing the Wo

Historical sketches of Sandia National Laboratories nuclear field testing. Volume 1: Full discussion except for sensitive references

International Nuclear Information System (INIS)

Banister, J.R.

1994-10-01

This report contains historical sketches that cover the major activities of Sandia nuclear field testing, from early atmospheric shots until 1990. It includes a chronological overview followed by more complete discussions of atmospheric, high-altitude, underwater, cratering, and underground nuclear testing. Other activities related to nuclear testing and high-explosive tests are also described. A large number of references are cited for readers who wish to learn more about technical details. Appendices, written by several authors, provide more insight for a variety of special aspects of nuclear testing and related work. Two versions of this history were published: volume 1 has an unlimited distribution, and volume 2 has a limited distribution

Reference intervals for mean platelet volume and immature platelet fraction determined on a sysmex XE5000 hematology analyzer

DEFF Research Database (Denmark)

Jørgensen, Mikala Klok; Bathum, L.

2016-01-01

Background New parameters describing the platelet population of the blood are mean platelet volume (MPV), which is a crude estimate of thrombocyte reactivity, and immature platelet fraction (IPF), which reflects megakaryopoietic activity. This study aimed to define reference intervals for MPV...... and IPF and to investigate whether separate reference intervals according to smoking status, age or sex are necessary.Methods Blood samples were obtained from subjects participating in The Danish General Suburban Population Study. MPV and IPF measurements were performed by the use of the Sysmex XE-5000...

Shiism: What Students Need to Know. Footnotes. Volume 15, Number 2

Science.gov (United States)

Calvert, John

2010-01-01

This essay is excerpted from the author's book "Divisions within Islam," part of a 10-volume series for middle and high school students on the World of Islam. It provides information on the religious practices and beliefs of Shiism, and its differences with Sunni Islam. It mentions that Shiism is the second-largest denomination of Islam,…

Comparison of six methods of segmentation of tumor volume on the 18F-F.D.G. PET scan with reference histological volume in non small cell bronchopulmonary cancers

International Nuclear Information System (INIS)

Venel, Y.; Garhi, H.; Baulieu, J.L.; Prunier-Aesch, C.; Muret, A. de; Barillot, I.

2008-01-01

The 18 F-F.D.G. PET has demonstrated its importance in oncology, for initial extension and efficacy of anti tumoral therapeutics. Several studies have attempted to prove its utility to define tumoral volumes for conformational radiotherapy in non small cell lung cancers. Some authors have suggested the use of threshold of tumor intensity uptake with 40 or 50% of maximal intensity. Black et al. have determined contouring with linear regression formula of mean semi-quantitative index of tumor uptake (standard uptake value): SUV threshold = 0.307 Sub average + 0.588. Nestle et al. have taken into account the background noise intensity and mean intensity of the tumor: I threshold = β I average +I noise with β 0.15. Our study was done in collaboration with Inserm U618 team and has compared volumes defined on PET scan defined according to different methods based on intensity or S.U.V. to the tumour volume determined on CT scan by radio physicist. We have compared those volumes with histological volume that we considered for reference. Four patients have been included. They had 18 F-F.D.G. PET scan followed by complete tumoral removal surgery. Specific histological procedure allowed to define complete size of the tumor in re expanded lung. Comparatively to pathology, the volumes obtained using I max 40 and I max 50 are all underestimated. The volumes defined by Black's et al. method are under evaluated for the two largest tumours (15.8% to 22%) and overestimated for the two smallest ones (17.9 to 82.9%). Nestle's et al. method, using β = 0.15, correctly estimates two tumor volumes over 2 cm, but overestimates the two small tumors (79.6 to 124%). Finally, the corrected Nestle's et al. formula (using β = 0.264) overestimates three tumours. Volumes defined on CT scan by radio physicist are correct for one lesion, underestimated for one and overestimated for two other ones (44 and 179.5%). Nestle's et al. method seems to be the most accurate for tumours over 2 cm of

Solving hyperbolic equations with finite volume methods

CERN Document Server

Vázquez-Cendón, M Elena

2015-01-01

Finite volume methods are used in numerous applications and by a broad multidisciplinary scientific community. The book communicates this important tool to students, researchers in training and academics involved in the training of students in different science and technology fields. The selection of content is based on the author’s experience giving PhD and master courses in different universities. In the book the introduction of new concepts and numerical methods go together with simple exercises, examples and applications that contribute to reinforce them. In addition, some of them involve the execution of MATLAB codes. The author promotes an understanding of common terminology with a balance between mathematical rigor and physical intuition that characterizes the origin of the methods. This book aims to be a first contact with finite volume methods. Once readers have studied it, they will be able to follow more specific bibliographical references and use commercial programs or open source software withi...

CMR reference values for left ventricular volumes, mass, and ejection fraction using computer-aided analysis : The Framingham Heart Study

NARCIS (Netherlands)

Chuang, Michael L.; Gona, Philimon; Hautvast, Gilion L.T.F.; Salton, Carol J.; Breeuwer, Marcel; O'Donnell, Christopher J.; Manning, Warren J.

Purpose To determine sex-specific reference values for left ventricular (LV) volumes, mass, and ejection fraction (EF) in healthy adults using computer-aided analysis and to examine the effect of age on LV parameters. Materials and Methods We examined data from 1494 members of the Framingham Heart

Comparison of six methods of segmentation of tumor volume on the {sup 18}F-F.D.G. PET scan with reference histological volume in non small cell bronchopulmonary cancers; Comparaison de six methodes de segmentation du volume tumoral sur la {sup 18}F-FDG TEP-TDM avec le volume de reference anatomopathologique dans les cancers bronchopulmonaires non a petites cellules

Energy Technology Data Exchange (ETDEWEB)

Venel, Y.; Garhi, H.; Baulieu, J.L.; Prunier-Aesch, C. [CHRU de Tours-Bretonneau, Service de Medecine Nucleaire, 37 - Tours (France); Muret, A. de [CHRU de Tours-Bretonneau, Service de Radiotherapie, 37 - Tours (France); Barillot, I. [CHRU de Tours-Bretonneau, Service d' Anatomopathologie, 37 - Tours (France)

2008-06-15

The {sup 18}F-F.D.G. PET has demonstrated its importance in oncology, for initial extension and efficacy of anti tumoral therapeutics. Several studies have attempted to prove its utility to define tumoral volumes for conformational radiotherapy in non small cell lung cancers. Some authors have suggested the use of threshold of tumor intensity uptake with 40 or 50% of maximal intensity. Black et al. have determined contouring with linear regression formula of mean semi-quantitative index of tumor uptake (standard uptake value): SUV{sub threshold} = 0.307 Sub{sub average} + 0.588. Nestle et al. have taken into account the background noise intensity and mean intensity of the tumor: I{sub threshold} = {beta} I{sub average} +I{sub noise} with {beta} 0.15. Our study was done in collaboration with Inserm U618 team and has compared volumes defined on PET scan defined according to different methods based on intensity or S.U.V. to the tumour volume determined on CT scan by radio physicist. We have compared those volumes with histological volume that we considered for reference. Four patients have been included. They had {sup 18}F-F.D.G. PET scan followed by complete tumoral removal surgery. Specific histological procedure allowed to define complete size of the tumor in re expanded lung. Comparatively to pathology, the volumes obtained using I{sub max} 40 and I{sub max} 50 are all underestimated. The volumes defined by Black's et al. method are under evaluated for the two largest tumours (15.8% to 22%) and overestimated for the two smallest ones (17.9 to 82.9%). Nestle's et al. method, using {beta} = 0.15, correctly estimates two tumor volumes over 2 cm, but overestimates the two small tumors (79.6 to 124%). Finally, the corrected Nestle's et al. formula (using {beta} = 0.264) overestimates three tumours. Volumes defined on CT scan by radio physicist are correct for one lesion, underestimated for one and overestimated for two other ones (44 and 179.5%). Nestle

Mi Carrera. Volume IV: Effective Career Planning with Hispanic High School Students.

Science.gov (United States)

Douglas, Denise, Ed.

This curriculum guide, the fourth of a four-volume set that is intended to improve career and vocational guidance services to Spanish-speaking students in grades 9 through 12, is actually a collection of three different resources. The first section, "Group Activities: Intercambios," by Maria Garcia, is a model culturally based group counseling…

Shock wave science and technology reference library. Vol. 4. Heterogeneous detonation

Energy Technology Data Exchange (ETDEWEB)

Zhang, Fan (ed.) [Defence Research and Development Canada, Suffield, AB (Canada)

2009-07-01

This book, as a volume of the Shock Wave Science and Technology Reference Library, is primarily concerned with detonation waves or compression shock waves in reactive heterogeneous media, including mixtures of solid, liquid and gas phases. The topics involve a variety of energy release and control processes in such media - a contemporary research field that has found wide applications in propulsion and power, hazard prevention as well as military engineering. The six extensive chapters contained in this volume are: - Spray Detonation (SB Murray and PA Thibault) - Detonation of Gas-Particle Flow (F Zhang) - Slurry Detonation (DL Frost and F Zhang) - Detonation of Metalized Composite Explosives (MF Gogulya and MA Brazhnikov) - Shock-Induced Solid-Solid Reactions and Detonations (YA Gordopolov, SS Batsanov, and VS Trofimov) - Shock Ignition of Particles (SM Frolov and AV Fedorov). Each chapter is self-contained and can be read independently of the others, though, they are thematically interrelated. They offer a timely reference, for graduate students as well as professional scientists and engineers, by laying out the foundations and discussing the latest developments including yet unresolved challenging problems. (orig.)

Lung function in North American Indian children: reference standards for spirometry, maximal expiratory flow volume curves, and peak expiratory flow.

Science.gov (United States)

Wall, M A; Olson, D; Bonn, B A; Creelman, T; Buist, A S

1982-02-01

Reference standards of lung function was determined in 176 healthy North American Indian children (94 girls, 82 boys) 7 to 18 yr of age. Spirometry, maximal expiratory flow volume curves, and peak expiratory flow rate were measured using techniques and equipment recommended by the American Thoracic Society. Standing height was found to be an accurate predictor of lung function, and prediction equations for each lung function variable are presented using standing height as the independent variable. Lung volumes and expiratory flow rates in North American Indian children were similar to those previously reported for white and Mexican-American children but were greater than those in black children. In both boys and girls, lung function increased in a curvilinear fashion. Volume-adjusted maximal expiratory flow rates after expiring 50 or 75% of FVC tended to decrease in both sexes as age and height increased. Our maximal expiratory flow volume curve data suggest that as North American Indian children grow, lung volume increases at a slightly faster rate than airway size does.

Impact of Formulas, Language and Instruction on Student Performance on Cost-Volume-Profit Problems

Science.gov (United States)

Johnson, Benny G.; Sargent, Carol Springer

2014-01-01

This study investigated how three factors impacted performance on cost-volume-profit homework problems: language, formula use, and instruction. Students enrolled in Introduction to Financial Accounting (the first principles of accounting course) and Managerial Accounting (the second principles of accounting course) from eight different US colleges…

Introduction to Poultry Production. Instructor Guide [and] Student Reference. Volume 31, Number 3 [and] Number 4.

Science.gov (United States)

Raphael, Katherine

This packet contains both teacher and student materials for a unit on poultry production in vocational agriculture courses and covers the following lessons: (1) overview of the poultry industry; (2) selection and evaluation; (3) production; (4) reproduction; (5) health issues; and (6) processing and marketing. The lessons include the following…

Greenhouse Operation and Management. Instructor Guide and Student Reference. Missouri Agricultural Education. Volume 21, Number 3.

Science.gov (United States)

Wells, Judith A.; And Others

These student and instructor materials for a one-semester course intended for high school juniors and seniors teach the following 24 lessons: (1) the scope and development of greenhouse production; (2) the economic importance of greenhouse crops; (3) careers in greenhouse operation and management; (4) greenhouse parts, structures, and coverings;…

Development of solid water-equivalent radioactive certified reference materials

International Nuclear Information System (INIS)

Finke, E.; Greupner, H.; Groche, K.; Rittwag, R.; Geske, G.

1991-01-01

This paper presents a brief description of the development of solid water-equivalent beta volume radioactive certified reference materials. These certified reference materials were prepared for the beta fission nuclides 90 Sr/ 90 Y, 137 Cs, 147 Pm and 204 Tl. Comparative measurements of liquid and solid water-equivalent beta volume radioactive certified reference materials are discussed. (author)

Soil Conservation Unit for the Advanced Crop Production and Marketing Course. Student Reference. AGDEX 570.

Science.gov (United States)

Stewart, Bob R.; And Others

This student reference booklet is designed to accompany lessons outlined in the companion instructor's guide on soil conservation. The soil conservation unit builds on competencies gained in Agricultural Science I and II. Informative material is provided for these eight lessons: benefits of conservation, land utilization, how soils are eroded,…

Development of solid water-equivalent radioactive certified reference materials

Energy Technology Data Exchange (ETDEWEB)

Finke, E.; Greupner, H.; Groche, K.; Rittwag, R. (Office for Standardization, Metrology and Quality Control (ASMW), Berlin (Germany, F.R.)); Geske, G. (Jena Univ. (Germany, F.R.))

1991-01-01

This paper presents a brief description of the development of solid water-equivalent beta volume radioactive certified reference materials. These certified reference materials were prepared for the beta fission nuclides {sup 90}Sr/{sup 90}Y, {sup 137}Cs, {sup 147}Pm and {sup 204}Tl. Comparative measurements of liquid and solid water-equivalent beta volume radioactive certified reference materials are discussed. (author).

Quantification of pneumothorax volume on chest radiographs: comparison between the collins' and the axel's methods with three-dimensional CT as the standard of reference

International Nuclear Information System (INIS)

Lee, Chang Keun; Kim, Hyung Jin; Lee, Kyung Hee; Kim, Joung Taek; Kim, Kwang Ho; Suh, Chang Hae; Han, Heon

1999-01-01

The purpose of this study was twofold. In a preliminary study, we evaluated the accuracy of 3-D (three-dimensional) CT for the estimation of pneumothorax volume and for providing the optimal postprocessing method for clinical study. In the clinical study, we determined which of the two methods, Collins' and Axel's, was more accurate for the estimation of pneumothorax volume, as seen on chest radiographs, using 3-D CT as the standard of reference. In the preliminary study, 3-D CT was applied to phantoms and to four patients with pneumothorax using two different postprocessing methods, manual contour delineation and thresholding. In the clinical study, 3-D CT was performed in 13 patients with pneumothorax. For the purpose of evaluating conventional radiographs, a localizer scan was used for comparing the accuracy of Collins' method with that of Axel's method, with 3-D CT as the standard of reference. The preliminary study revealed that 3-D CT estimated pneumothorax volume with great accuracy and that manual contour delineation and thresholding measured volume equally well. Because of the shorter postprocessing time required with thresholding than with manual contour delineation (5 min versus 30 min), the former was used during clinical study. The results of this indicated close correlation between the measurements obtained using Collins' method on chest radiographs and those obtained by 3-D CT(r=0.95, p 0.05). 3-D CT can estimate pneumothorax volume with great accuracy. Collins' method is superior to Axel's method for the quantification of pneumothorax volume as seen on chest radiographs

Comparing Volumes of Prisms and Pyramids

Science.gov (United States)

Vinogradova, Natalya

2012-01-01

Students' experience in using formulas for volumes is often limited to substituting numbers into given formulas. An activity presented in this article may help students make connections between the formulas for volumes of prisms and volumes of pyramids. In addition, some interesting facts from number theory arise, demonstrating strong connections…

ICRU reference dose in an era of intensity-modulated radiation therapy clinical trials: Correlation with planning target volume mean dose and suitability for intensity-modulated radiation therapy dose prescription

International Nuclear Information System (INIS)

Yaparpalvi, Ravindra; Hong, Linda; Mah, Dennis; Shen Jin; Mutyala, Subhakar; Spierer, Marnee; Garg, Madhur; Guha, Chandan; Kalnicki, Shalom

2008-01-01

Background and Purpose: IMRT clinical trials lack dose prescription and specification standards similar to ICRU standards for two- and three-dimensional external beam planning. In this study, we analyzed dose distributions for patients whose treatment plans incorporated IMRT, and compared the dose determined at the ICRU reference point to the PTV doses determined from dose-volume histograms. Additionally, we evaluated if ICRU reference type single-point dose prescriptions are suitable for IMRT dose prescriptions. Materials and methods: For this study, IMRT plans of 117 patients treated at our institution were randomly selected and analyzed. The treatment plans were clinically applied to the following disease sites: abdominal (11), anal (10), brain (11), gynecological (15), head and neck (25), lung (15), male pelvis (10) and prostate (20). The ICRU reference point was located in each treatment plan following ICRU Report 50 guidelines. The reference point was placed in the central part of the PTV and at or near the isocenter. In each case, the dose was calculated and recorded to this point. For each patient - volume and dose (PTV, PTV mean, median and modal) information was extracted from the planned dose-volume histogram. Results: The ICRU reference dose vs PTV mean dose relationship in IMRT exhibited a weak positive association (Pearson correlation coefficient 0.63). In approximately 65% of the cases studied, dose at the ICRU reference point was greater than the corresponding PTV mean dose. The dose difference between ICRU reference and PTV mean doses was ≤2% in approximately 79% of the cases studied (average 1.21% (±1.55), range -4% to +4%). Paired t-test analyses showed that the ICRU reference doses and PTV median doses were statistically similar (p = 0.42). The magnitude of PTV did not influence the difference between ICRU reference and PTV mean doses. Conclusions: The general relationship between ICRU reference and PTV mean doses in IMRT is similar to that

Sizewell 'B' PWR reference design

International Nuclear Information System (INIS)

1982-04-01

The reference design for a PWR power station to be constructed as Sizewell 'B' is presented in 3 volumes containing 14 chapters and in a volume of drawings. The report describes the proposed design and provides the basis upon which the safety case and the Pre-Construction Safety Report have been prepared. The station is based on a 3425MWt Westinghouse PWR providing steam to two turbine generators each of 600 MW. The layout and many of the systems are based on the SNUPPS design for Callaway which has been chosen as the US reference plant for the project. (U.K.)

The accuracy of references in PhD theses: a case study.

Science.gov (United States)

Azadeh, Fereydoon; Vaez, Reyhaneh

2013-09-01

Inaccurate references and citations cause confusion, distrust in the accuracy of a report, waste of time and unnecessary financial charges for libraries, information centres and researchers. The aim of the study was to establish the accuracy of article references in PhD theses from the Tehran and Tabriz Universities of Medical Sciences and their compliance with the Vancouver style. We analysed 357 article references in the Tehran and 347 in the Tabriz. Six bibliographic elements were assessed: authors' names, article title, journal title, publication year, volume and page range. Referencing errors were divided into major and minor. Sixty two percent of references in the Tehran and 53% of those in the Tabriz were erroneous. In total, 164 references in the Tehran and 136 in the Tabriz were complete without error. Of 357 reference articles in the Tehran, 34 (9.8%) were in complete accordance with the Vancouver style, compared with none in the Tabriz. Accuracy of referencing did not differ significantly between the two groups, but compliance with the Vancouver style was significantly better in the Tehran. The accuracy of referencing was not satisfactory in both groups, and students need to gain adequate instruction in appropriate referencing methods. © 2013 The authors. Health Information and Libraries Journal © 2013 Health Libraries Group.

Coastwide Reference Monitoring System (CRMS) Vegetation Volume Index: An assessment tool for marsh habitat focused on the three-dimensional structure at CRMS vegetation monitoring stations

Science.gov (United States)

Wood, William B.; Visser, Jenneke M.; Piazza, Sarai C.; Sharp, Leigh A.; Hundy, Laura C.; McGinnis, Tommy E.

2015-12-04

A Vegetation Volume (VV) variable and Vegetation Volume Index (VVI) have been developed for the Coastwide Reference Monitoring System (CRMS). The VV is a measure of the amount of three-dimensional vegetative structure present at each CRMS site and is based on vegetation data collected annually. The VV uses 10 stations per CRMS site to quantify four vegetation layers: carpet, herbaceous, shrub, and tree. For each layer an overall live vegetation percent cover and height are collected to create a layer volume; the individual layer volumes are then summed to generate a site vegetation volume profile. The VV uses the two-dimensional area of live vegetative cover (in square meters) multiplied by the height (in meters) of each layer to produce a volume (in cubic meters) for each layer present in a 2-meter by 2-meter station. These layers are additive, yielding a total volume for each of the 10 herbaceous vegetation stations and an overall CRMS marsh site average.

L'Identite Culturelle D'Etudiants de la Formation a L'Enseignement: Sentiments et Referents Identitaires (The Cultural Identity of Students in Teacher Education: Identificatory Feelings and Referents).

Science.gov (United States)

Theberge, Mariette

1998-01-01

Explores feelings and referents contained in cultural-identity definitions of student teachers at the University of Montreal. Reveals that developing a sense of belonging to a cultural identity requires that individuals experience opportunities to identify with the cultural group. Notes importance of this research for teacher education in…

References on the english language in reports of students and egresses in the graduate course in spanish

Directory of Open Access Journals (Sweden)

Rosa Yokota

2016-10-01

Full Text Available This article is based on a broader study developed by Rodrigues and Yokota (2013 on the profile of licensed students in Languages-Spanish in São Paulo State. We present a cutout of data and deepened reading and analysis, basing ourselves on the Critical Discourse Analysis (CDA, on how the survey participants refer (or not to the language. References on the English language show a strong influence of experience with this language in choosing the course of Spanish as a foreign language. The imagery created on foreign languages by Brazilian students is crossed by the experiences they had with the English language. Recognizing this foundational relationship, whether positive or negative, is necessary to establish the relationship with the new foreign language being studied or, in the case of university teachers of foreign languages, mediate student’s relationship with the new language.

On Learning to Write Those **** References

Science.gov (United States)

Hartley, James

2014-01-01

In this article, the author discusses how difficult it is for psychology college students to learn to write multiple disciplines of references. It is hard for students to understand why all details have to be written in the right order and the right type-style--depending upon which reference system is used. In this article, the author proposes…

TclTk Pocket Reference

CERN Document Server

Raines, Paul

1998-01-01

The Tcl/Tk combination is increasingly popular because it lets you produce sophisticated graphical interfaces with a few easy commands, develop and change scripts quickly, and conveniently tie together existing utilities or programming libraries. The Tcl/Tk Pocket Reference,a handy reference guide to the basic Tcl language elements, Tcl and Tk commands, and Tk widgets, is a companion volume to Tcl/Tk in a Nutshell.

A feasibility study for the design of a simulated radioactive waste repository facility. Volume 1 Text-References

International Nuclear Information System (INIS)

Mott; Hay; Anderson.

1987-01-01

The report is in two volumes: Volume 1 contains the main text and the references, and volume 2, all the figures and tables. The great majority of published concepts for the disposal of heat generating radioactive waste envisage the emplacement of waste packages in boreholes backfilled with an engineered material described as the buffer. The need for a full scale experimental programme to investigate buffer placement and performance was identified, and this report describes the first stage in the development of that programme. The nature of candidate buffer materials and the factors defining their behaviour have been reviewed and the nature of a buffer material selection and testing programme have been outlined. The properties of crystalline rocks, saliferous formations and clay host materials have been reviewed and the complex interactions between them have been identified. The difficulty of modelling these properties and the interaction between buffer and host materials has been discussed and the instrumentation requirements for measuring this interaction have been outlined. A limited amount of thermomechanical analysis has been performed to give a preliminary indication of the parameters of major significance in selection of instrumentation and modelling materials. It has been concluded that a complete simulation of host material properties is not presently viable, although it may be attainable for some crystalline rock types. Alternative strategies for assessment of the host/buffer interaction are suggested

The quality of life of medical students studying in New Zealand: a comparison with nonmedical students and a general population reference group.

Science.gov (United States)

Henning, Marcus A; Krägeloh, Christian U; Hawken, Susan J; Zhao, Yipin; Doherty, Iain

2012-01-01

Quality of life is an essential component of learning and has strong links with the practice and study of medicine. There is burgeoning evidence in the research literature to suggest that medical students are experiencing health-related problems such as anxiety, depression, and burnout. The aim of the study was to investigate medical students' perceptions concerning their quality of life. Two hundred seventy-four medical students studying in their early clinical years (response rate = 80%) participated in the present study. Medical students were asked to fill in the abbreviated version of the World Health Organization Quality of Life questionnaire to elicit information about their quality of life perceptions in relation to their physical health, psychological health, social relationships, and environment. Subsequently, their responses were compared with two nonmedical students groups studying at a different university in the same city and an Australian general population norm. The findings were compared using independent group's t tests, confidence intervals, and Cohen's d. The main finding of the study indicated that medical students had similar quality of life perceptions to nonmedical students except in relation to the environment domain. Furthermore, the medical student group scored lower than the general population reference group on the physical health, psychological health, and environment quality of life domains. The results suggest that all university students are expressing concerns related to quality of life, and thus their health might be at risk. The findings in this study provided no evidence to support the notion that medical students experience lower levels of quality of life compared to other university students. When compared to the general population, all student groups examined in this study appeared to be experiencing lower levels of quality of life. This has implications for pastoral support, educationalists, student support personnel, and the

Towards a universal method for calculating hydration free energies: a 3D reference interaction site model with partial molar volume correction

International Nuclear Information System (INIS)

Palmer, David S; Frolov, Andrey I; Ratkova, Ekaterina L; Fedorov, Maxim V

2010-01-01

We report a simple universal method to systematically improve the accuracy of hydration free energies calculated using an integral equation theory of molecular liquids, the 3D reference interaction site model. A strong linear correlation is observed between the difference of the experimental and (uncorrected) calculated hydration free energies and the calculated partial molar volume for a data set of 185 neutral organic molecules from different chemical classes. By using the partial molar volume as a linear empirical correction to the calculated hydration free energy, we obtain predictions of hydration free energies in excellent agreement with experiment (R = 0.94, σ = 0.99 kcal mol -1 for a test set of 120 organic molecules). (fast track communication)

Towards a universal method for calculating hydration free energies: a 3D reference interaction site model with partial molar volume correction.

Science.gov (United States)

Palmer, David S; Frolov, Andrey I; Ratkova, Ekaterina L; Fedorov, Maxim V

2010-12-15

We report a simple universal method to systematically improve the accuracy of hydration free energies calculated using an integral equation theory of molecular liquids, the 3D reference interaction site model. A strong linear correlation is observed between the difference of the experimental and (uncorrected) calculated hydration free energies and the calculated partial molar volume for a data set of 185 neutral organic molecules from different chemical classes. By using the partial molar volume as a linear empirical correction to the calculated hydration free energy, we obtain predictions of hydration free energies in excellent agreement with experiment (R = 0.94, σ = 0.99 kcal mol (- 1) for a test set of 120 organic molecules).

Communication Breakdown: Librarian and Student Approaches to Virtual Reference Differ. A review of: Walter, Virginia A. and Cindy Mediavilla. “Teens Are from Neptune, Librarians Are from Pluto: An Analysis of Online Reference Transactions.” Library Trends 54.2 (2005: 209-227.

Directory of Open Access Journals (Sweden)

Stephanie Hall

2006-09-01

Full Text Available Objective – To evaluate the effectiveness of an online reference and referral service for students (primarily those in middle school and high school seeking homework help. Design – Analysis of 114 transcripts of reference transactions. Setting – A centralized homework reference and tutor referral service provided on behalf of the California State Library by the Metropolitan Cooperative Library System. Subjects – Virtual reference librarians at a large urban library system and middle and high school students in California. Methods – One hundred fourteen virtual reference transactions recorded between October 12 and November 8, 2003 were evaluated against the Reference and User Services Association’s (RUSA “Guidelines for Behavioral Performance of Reference and Information Service Providers.” Secondly, the transcripts were subjected to discourse analysis. Main results Performance of virtual reference librarians vis‐àvis RUSA guidelines In the majority of cases, there was some evidence that librarians communicated clearly (110 out of 114 transactions. In 78 cases, it appeared that a librarian was available quickly, and in 92 of the transactions a friendly greeting was given. What was striking, however, was that in a clear majority of cases, some of the classic reference interview strategies were not employed. In 100 or more cases each, the following strategies were not observed: repeating or paraphrasing the question; helping to interpret the question; verifying mutual understanding; asking if the question has been answered; asking if the student needs more information. Furthermore, in 75 cases librarians did not probe for further information to clarify the question, while in 87 cases they did not check that information had been clearly understood. Possibly related to these findings, the researchers felt that the transcripts revealed “a conviction that homework questions are not the proper content for reference transactions�

Brazilian readers and contextual reference Brazilian readers and contextual reference

Directory of Open Access Journals (Sweden)

Lilia M. O. Carioni

2008-04-01

Full Text Available This article describes an experiment carried out using Brazilian university students at UFSC, the purpose being to check comprehension relationships between two types of contextual reference and two languages, Portuguese and English. A major stimulus for the research was the question: are Brazilian students' difficulties in reading English related more to English language difficulties or to difficulties in processing text in general?

Systems Book for a Student Information System. End of Project Report, 1968-1971, Volume II.

Science.gov (United States)

Western Nevada Regional Education Center, Lovelock.

The necessary handbooks for use of the Student Information System (SIS), developed and tested by the Western Nevada Regional Education Center under a 1968-71 Title III (Elementary and Secondary Education Act) grant, are presented in this volume. As noted, the purpose of the SIS is to supply data and information to persons or organizations who make…

Regular Formal Evaluation Sessions are Effective as Frame-of-Reference Training for Faculty Evaluators of Clerkship Medical Students.

Science.gov (United States)

Hemmer, Paul A; Dadekian, Gregory A; Terndrup, Christopher; Pangaro, Louis N; Weisbrod, Allison B; Corriere, Mark D; Rodriguez, Rechell; Short, Patricia; Kelly, William F

2015-09-01

Face-to-face formal evaluation sessions between clerkship directors and faculty can facilitate the collection of trainee performance data and provide frame-of-reference training for faculty. We hypothesized that ambulatory faculty who attended evaluation sessions at least once in an academic year (attendees) would use the Reporter-Interpreter-Manager/Educator (RIME) terminology more appropriately than faculty who did not attend evaluation sessions (non-attendees). Investigators conducted a retrospective cohort study using the narrative assessments of ambulatory internal medicine clerkship students during the 2008-2009 academic year. The study included assessments of 49 clerkship medical students, which comprised 293 individual teacher narratives. Single-teacher written and transcribed verbal comments about student performance were masked and reviewed by a panel of experts who, by consensus, (1) determined whether RIME was used, (2) counted the number of RIME utterances, and (3) assigned a grade based on the comments. Analysis included descriptive statistics and Pearson correlation coefficients. The authors reviewed 293 individual teacher narratives regarding the performance of 49 students. Attendees explicitly used RIME more frequently than non-attendees (69.8 vs. 40.4 %; p sessions used RIME terminology more frequently and provided more accurate grade recommendations than teachers who did not attend. Formal evaluation sessions may provide frame-of-reference training for the RIME framework, a method that improves the validity and reliability of workplace assessment.

The Law of the People (Dine Bibee Haz'Aannii): A Bicultural Approach to Legal Education for Navajo Students, Volume 4.

Science.gov (United States)

Vicenti, Dan; And Others

Volume 4 of a 4-volume bilingual bicultural law-related curriculum examines Navajo community life as it is affected by certain laws. Getting a job, obtaining assistance from welfare and other agencies, and preserving one's individual rights as an employee or as a student are all aspects of daily living with important legal ramifications. This unit…

Reactor Emergency Action Level Monitor: Volume 2, REALM user's reference guide: Final report

International Nuclear Information System (INIS)

Touchton, R.A.

1988-09-01

A User Manual for the Reactor Emergency Action Level Monitor (REALM) expert system prototype is provided in this volume. REALM has been designed to provide expert assistance in the identification of a nuclear power plant emergency situation and the determination of its severity. REALM has been developed as an expert system which can provide sensor interpretation and situation assessment in a real-time processing environment. In its state of development at project completion, these capabilities are used in an off-line (i.e., stand-alone, desktop) fashion to provide emergency preparedness assistance in the areas of emergency classification training and emergency exercise scenario generation. REALM also serves a prototype and stepping-stone for the possible connection to the plant for on-line use. In order to distinguish the off-line system (now complete) from the on-line system (now moving from a research prototype to an installed system), the term ''REALM'' is used to indicate the on-line version, with users in the control room, technical support center, and the emergency operations facility, The off-line version is referred to as ''uREALM.''

Elementary, Middle, and High School Students Vary in Frequency and Purpose When Using Online Digital References. A review of: Silverstein, Joanne. “Just Curious: Children’s Use of Digital Reference for Unimposed Queries and Its Importance in Informal Education.” Library Trends 54.2 (Fall 2005: 228‐44.

Directory of Open Access Journals (Sweden)

Julie Stephens

2006-12-01

Full Text Available Objective – To determine 1 how and with what frequency children use digital references to answer their own unimposed questions; 2 whether digital reference services support their self‐initiated learning; 3 whether digital reference services support the transfer of student motivation and curiosity from the formal to the informal; and 4 what instructional and software designers should consider in creating tools that support learning.Design – Inductive analysis.Setting – Virtual Reference Desk’s (VRD Learning Center (http://vrd.askvrd.org/ and the National Science Foundation’s (NSFdigital reference service (http://www.esteme.org during Excellence in Science, Technology, Engineering, and Mathematics Education Week (ESTEME, April 11‐16, 2005.Subjects – Elementary (K‐5, middle (6‐8,and high school (9‐12 students from the general public. One hundred fourteen questions were analyzed, however there is no indication of the number of different students who submitted the questions.Methods – This study was conducted using a pool of 600 questions from students, teachers, parents, and the general public that were submitted to two digital reference services intended for students. Three hundred experts in the fields of Math and Science volunteered to answer the submitted questions during Excellence in Science, Technology, Engineering, and Mathematics Education Week. Because the digital services employed a pull‐down menu to describe the user as a student, teacher, parent, etc., the questions could be narrowed to those submitted by students. The questions were also narrowed to those marked as “just curious” from a question purpose menu that contained categories including “written report,” “science fair project,” and “just curious.” A total of 114 unique questions from elementary, middle, and high school students were analyzed to determine the study objectives. The 114 questions were loaded into a qualitative software

Future Communication, Computing, Control and Management Volume 1

CERN Document Server

2012-01-01

This volume contains revised and extended research articles written by prominent researchers participating in the ICF4C 2011 conference. 2011 International Conference on Future Communication, Computing, Control and Management (ICF4C 2011) has been held on December 16-17, 2011, Phuket, Thailand. Topics covered include intelligent computing, network management, wireless networks, telecommunication, power engineering, control engineering, Signal and Image Processing, Machine Learning, Control Systems and Applications, The book will offer the states of arts of tremendous advances in Computing, Communication, Control, and Management and also serve as an excellent reference work for researchers and graduate students working on Computing, Communication, Control, and Management Research.

Future Communication, Computing, Control and Management Volume 2

CERN Document Server

2012-01-01

This volume contains revised and extended research articles written by prominent researchers participating in the ICF4C 2011 conference. 2011 International Conference on Future Communication, Computing, Control and Management (ICF4C 2011) has been held on December 16-17, 2011, Phuket, Thailand. Topics covered include intelligent computing, network management, wireless networks, telecommunication, power engineering, control engineering, Signal and Image Processing, Machine Learning, Control Systems and Applications, The book will offer the states of arts of tremendous advances in Computing, Communication, Control, and Management and also serve as an excellent reference work for researchers and graduate students working on Computing, Communication, Control, and Management Research.

Future Computing, Communication, Control and Management Volume 2

CERN Document Server

2012-01-01

This volume contains revised and extended research articles written by prominent researchers participating in the ICF4C 2011 conference. 2011 International Conference on Future Communication, Computing, Control and Management (ICF4C 2011) has been held on December 16-17, 2011, Phuket, Thailand. Topics covered include intelligent computing, network management, wireless networks, telecommunication, power engineering, control engineering, Signal and Image Processing, Machine Learning, Control Systems and Applications, The book will offer the states of arts of tremendous advances in Computing, Communication, Control, and Management and also serve as an excellent reference work for researchers and graduate students working on Computing, Communication, Control, and Management Research.

Future Wireless Networks and Information Systems Volume 1

CERN Document Server

2012-01-01

This volume contains revised and extended research articles written by prominent researchers participating in ICFWI 2011 conference. The 2011 International Conference on Future Wireless Networks and Information Systems (ICFWI 2011) has been held on November 30 ~ December 1, 2011, Macao, China. Topics covered include Wireless Information Networks, Wireless Networking Technologies, Mobile Software and Services, intelligent computing, network management, power engineering, control engineering, Signal and Image Processing, Machine Learning, Control Systems and Applications, The book will offer the states of arts of tremendous advances in Wireless Networks and Information Systems and also serve as an excellent reference work for researchers and graduate students working on Wireless Networks and Information Systems.

Structure of the Wechsler Intelligence Scale for Children-Fourth Edition among a National Sample of Referred Students

Science.gov (United States)

Watkins, Marley W.

2010-01-01

The structure of the Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV; D. Wechsler, 2003a) was analyzed via confirmatory factor analysis among a national sample of 355 students referred for psychoeducational evaluation by 93 school psychologists from 35 states. The structure of the WISC-IV core battery was best represented by four…

Safety in Academic Chemistry Laboratories: Volume 1. Accident Prevention for College and University Students, 7th Edition.

Science.gov (United States)

American Chemical Society, Washington, DC.

This book contains volume 1 of 2 and describes safety guidelines for academic chemistry laboratories to prevent accidents for college and university students. Contents include: (1) "Your Responsibility for Accident Prevention"; (2) "Guide to Chemical Hazards"; (3) "Recommended Laboratory Techniques"; and (4) "Safety Equipment and Emergency…

TV Trouble-Shooting Manual. Volumes 7-8. Part 3: Synchronisation and Deflection Circuits. Student and Instructor's Manuals.

Science.gov (United States)

Mukai, Masaaki; Kobayashi, Ryozo

These volumes are, respectively, the self-instructional student manual and the teacher manual that cover the third set of training topics in this course for television repair technicians. Both contain identical information on synchronization and deflection circuits, including sections on the principle of synchronized deflection, synchronization…

Referred Students' Performance on the Reynolds Intellectual Assessment Scales and the Wechsler Intelligence Scale for Children--Fourth Edition

Science.gov (United States)

Edwards, Oliver W.; Paulin, Rachel V.

2007-01-01

This study investigates the convergent relations of the Reynolds Intellectual Assessment Scales (RIAS) and the Wechsler Intelligence Scale for Children--Fourth Edition (WISC-IV). Data from counterbalanced administrations of each instrument to 48 elementary school students referred for psychoeducational testing were examined. Analysis of the 96…

Predictors of teachers' intention to refer students with ADHD to mental health professionals: comparison of U.S. and South Korea.

Science.gov (United States)

Lee, Ji-yeon

2014-12-01

A teacher's intention to refer students to mental health professionals is important to the early identification of attention-deficit/hyperactivity disorder (ADHD) and prevention of further problems. The theory of planned behavior (TPB) was used to determine the strongest belief-related predictors of a teacher's intentions to refer students with ADHD symptoms to a mental health professional in the U.S. and South Korea. Perceived stigma and knowledge of ADHD were additional predictors in examining the role of culture in a teacher's perceptions of the public's stigma toward ADHD and a teachers' knowledge of ADHD. Cross-cultural differences exist. U.S. teachers' (n = 235) intentions to refer were predicted by all TPB variables (i.e., attitudes about referral, beliefs about whether important others would approve of making a referral, and perceived behavioral control in making a referral). However, among South Korean teachers (n = 144), behavioral control and perceived stigma were the only predictors. The results imply the importance of considering the cultural context in understanding a teacher's referral behaviors. PsycINFO Database Record (c) 2014 APA, all rights reserved.

Reference Sources: Little Known to Basic

Science.gov (United States)

RQ, 1970

1970-01-01

This article lists seventy-eight reference sources, and is divided into the following four sections: (1) Useful But Little-Known Reference Tools by John Fetros, (2) The Statesman's Year-Book by James Becker, (3) Single Volume Scientific Encyclopedias by Jack Clarke and (4) Ten Basic Sources of Business and Economic Statistics by James Woy. (MF)

12-Year Use of a Digital Reference Library (VitalBook) at a U.S. Dental School: Students' and Alumni Perceptions.

Science.gov (United States)

Spielman, Andrew I; Maas, Elizabeth; Eisenberg, Elise S

2017-10-01

Digital textbooks are being used to reduce production and storage costs of printed copies, enhance usage, and include search capabilities, but the use of digital texts is not universally accepted. In 2001, the New York University College of Dentistry introduced a digital reference library, the VitalBook. Beginning in 2005, the college annually surveyed senior students and, from 2012, also surveyed alumni on their opinions and extent of use of the VitalBook. The aim of this study was to evaluate 12 years of students' perspectives and three years of alumni perspectives on the value of the VitalBook to their dental educational experience. Students were asked how frequently they used the VitalBook, if it was a good investment, if they would use it after graduation, and if they would recommend it to others. Alumni were asked the last three questions. This study reports the results from 4,105 students over 12 years (average response rate 95.3%) and 184 alumni over three years (average response rate 17.4%). The results indicated that students used the VitalBook on average 24% of their study time, but they were split regarding the other questions. The majority opinion in 2005 was negative on all questions. These opinions shifted to become more favorable to a peak in 2010, but declined since then to a more negative overall view of the VitalBook. A split opinion among students continued through 2016, with fewer recommending it although more considered it a good investment with plans to use it after graduation. Alumni mirrored their responses as students. These results suggest that, as more flexible and dynamic digitized reference systems emerge, the use of student-paid traditional digitized textbooks may become an even less favored choice.

Specification of volume and dose in radiotherapy

International Nuclear Information System (INIS)

Levernes, S.

1997-01-01

As a result of a questionnaire about dose and volume specifications in radiotherapy in the Nordic countries, a group has been set up to propose common recommendations for these countries. The proposal is partly based on ICRU 50, but with major extensions. These extensions fall into three areas: patient geometry, treatment geometry, and dose specifications. For patient geometry and set-up one need alignment markings and anatomical reference points, the latter can be divided into internal and external reference points. These points are necessary to get relationships between coordinate systems related to patient and to treatment unit. For treatment geometry the main volume will be an anatomical target volume which just encompass the clinical target volume with all its variations and movements. This anatomical volume are the most suitable volume for prescription, optimization and reporting dose. A set-up margin should be added to the beam periphery in beams-eye-view to get the minimum size and shape of the beam. For dose specification the most important parameter for homogeneous dose distributions is the arithmetic mean of dose to the anatomical target volume together with its standard deviation. In addition the dose to the ICRU reference point should be reported for intercomparison, together with minimum and maximum doses or dose volume histograms for the anatomical target volume. (author)

The correlation between emotional intelligence and gray matter volume in university students.

Science.gov (United States)

Tan, Yafei; Zhang, Qinglin; Li, Wenfu; Wei, Dongtao; Qiao, Lei; Qiu, Jiang; Hitchman, Glenn; Liu, Yijun

2014-11-01

A number of recent studies have investigated the neurological substrates of emotional intelligence (EI), but none of them have considered the neural correlates of EI that are measured using the Schutte Self-Report Emotional Intelligence Scale (SSREIS). This scale was developed based on the EI model of Salovey and Mayer (1990). In the present study, SSREIS was adopted to estimate EI. Meanwhile, magnetic resonance imaging (MRI) and voxel-based morphometry (VBM) were used to evaluate the gray matter volume (GMV) of 328 university students. Results found positive correlations between Monitor of Emotions and VBM measurements in the insula and orbitofrontal cortex. In addition, Utilization of Emotions was positively correlated with the GMV in the parahippocampal gyrus, but was negatively correlated with the VBM measurements in the fusiform gyrus and middle temporal gyrus. Furthermore, Social Ability had volume correlates in the vermis. These findings indicate that the neural correlates of the EI model, which primarily focuses on the abilities of individuals to appraise and express emotions, can also regulate and utilize emotions to solve problems. Copyright © 2014 Elsevier Inc. All rights reserved.

JDBC Pocket Reference

CERN Document Server

Bales, Donald

2003-01-01

JDBC--the Java Database Connectivity specification--is a complex set of application programming interfaces (APIs) that developers need to understand if they want their Java applications to work with databases. JDBC is so complex that even the most experienced developers need to refresh their memories from time to time on specific methods and details. But, practically speaking, who wants to stop and thumb through a weighty tutorial volume each time a question arises? The answer is the JDBC Pocket Reference, a data-packed quick reference that is both a time-saver and a lifesaver. The JDBC P

Comparison between dose values specified at the ICRU reference point and the mean dose to the planning target volume

International Nuclear Information System (INIS)

Kukoowicz, Pawel F.; Mijnheer, Bernard J.

1997-01-01

Background and purpose: To compare dose values specified at the reference point, as recommended by the International Commission on Radiation Units and Measurements, ICRU, and the mean dose to the planning target volume, PTV. Material and methods: CT-based dose calculations were performed with a 3-D treatment planning system for 6 series of patients treated for bladder, brain, breast, lung, oropharynx and parotid gland tumour. All patients were arbitrarily chosen from a set of previously treated patients irradiated with a two- or three-field technique using customised blocks. Appropriate wedge angles and beam weights were chosen to make the dose distribution as homogeneous as possible. Results: The dose at the ICRU reference point was generally higher than the mean dose to the PTV. The difference between the ICRU reference dose and the mean dose to the PTV for an individual patient was less than 3% in 88% of cases and less than 2% in 72% of the cases. The differences were larger in those patients where the dose distribution is significantly influenced by the presence of lungs or air gaps. For each series of patients the mean difference between the ICRU reference dose and the mean dose to the PTV was calculated. The difference between these two values never exceeded 2%. Because not all planning systems are able to calculate the mean dose to the PTV, the concept of the mean central dose, the mean of the dose values at the centre of the PTV in each CT slice, has been introduced. The mean central dose was also calculated for the same patients and was closer to the mean dose to the PTV than the ICRU reference dose. Conclusion: The mean dose to the PTV is well estimated by either the ICRU reference dose or the mean central dose for a variety of treatment techniques for common types of cancer

Diagnostic performance of dental students in identifying mandibular condyle fractures by panoramic radiography and the usefulness of reference images

International Nuclear Information System (INIS)

Cho, Bong Hae

2011-01-01

The purpose of this study was to evaluate the diagnostic performance of dental students in detection of mandibular condyle fractures and the effectiveness of reference panoramic images. Forty-six undergraduates evaluated 25 panoramic radiographs for condylar fractures and the data were analyzed through receiver operating characteristic (ROC) analysis. After a month, they were divided into two homogeneous groups based on the first results and re-evaluated the images with (group A) or without (group B) reference images. Eight reference images included indications showing either typical condylar fractures or anatomic structures which could be confused with fractures. Paired t-test was used for statistical analysis of the difference between the first and the second evaluations for each group, and student's t-test was used between the two groups in the second evaluation. The intra- and inter-observer agreements were evaluated with Kappa statistics. Intra- and inter-observer agreements were substantial (k=0.66) and moderate (k=0.53), respectively. The area under the ROC curve (Az) in the first evaluation was 0.802. In the second evaluation, it was increased to 0.823 for group A and 0.814 for group B. The difference between the first and second evaluations for group A was statistically significant (p<0.05), however there was no statistically significant difference between the two groups in the second evaluation. Providing reference images to less experienced clinicians would be a good way to improve the diagnostic ability in detecting condylar fracture.

Diagnostic performance of dental students in identifying mandibular condyle fractures by panoramic radiography and the usefulness of reference images

Energy Technology Data Exchange (ETDEWEB)

Cho, Bong Hae [School of Dentistry, Pusan National University, Pusan (Korea, Republic of)

2011-06-15

The purpose of this study was to evaluate the diagnostic performance of dental students in detection of mandibular condyle fractures and the effectiveness of reference panoramic images. Forty-six undergraduates evaluated 25 panoramic radiographs for condylar fractures and the data were analyzed through receiver operating characteristic (ROC) analysis. After a month, they were divided into two homogeneous groups based on the first results and re-evaluated the images with (group A) or without (group B) reference images. Eight reference images included indications showing either typical condylar fractures or anatomic structures which could be confused with fractures. Paired t-test was used for statistical analysis of the difference between the first and the second evaluations for each group, and student's t-test was used between the two groups in the second evaluation. The intra- and inter-observer agreements were evaluated with Kappa statistics. Intra- and inter-observer agreements were substantial (k=0.66) and moderate (k=0.53), respectively. The area under the ROC curve (Az) in the first evaluation was 0.802. In the second evaluation, it was increased to 0.823 for group A and 0.814 for group B. The difference between the first and second evaluations for group A was statistically significant (p<0.05), however there was no statistically significant difference between the two groups in the second evaluation. Providing reference images to less experienced clinicians would be a good way to improve the diagnostic ability in detecting condylar fracture.

Controlled air incinerator for radioactive waste. Volume II. Engineering design references manual

International Nuclear Information System (INIS)

Koenig, R.A.; Draper, W.E.; Newmyer, J.M.; Warner, C.L.

1982-11-01

This two-volume report is a detailed design and operating documentation of the Los Alamos National Laboratory Controlled Air Incinerator (CAI) and is an aid to technology transfer to other Department of Energy contractor sites and the commercial sector. Volume I describes the CAI process, equipment, and performance, and it recommends modifications based on Los Alamos experience. It provides the necessary information for conceptual design and feasibility studies. Volume II provides descriptive engineering information such as drawings, specifications, calculations, and costs. It aids duplication of the process at other facilities

APEX (Air Pollution Exercise) Volume 20: Reference Materials.

Science.gov (United States)

Environmental Protection Agency, Research Triangle Park, NC. Office of Manpower Development.

The Reference Materials Manual is part of a set of 21 manuals (AA 001 009-001 029) used in APEX (Air Pollution Exercise), a computerized college and professional level "real world" game simulation of a community with urban and rural problems, industrial activities, and air pollution difficulties. For the purposes of the gaming exercise, APEX…

Nuclear power. Volume 2. Nuclear power project management

International Nuclear Information System (INIS)

Pedersen, E.S.

1978-01-01

NUCLEAR POWER PLANT DESIGN is intended to be used as a working reference book for management, engineers and designers, and as a graduate-level text for engineering students. The book is designed to combine theory with practical nuclear power engineering and design experience, and to give the reader an up-to-date view of the status of nuclear power and a basic understanding of how nuclear power plants function. Volume 2 contains the following chapters: (1) review of nuclear power plants; (2) licensing procedures; (3) safety analysis; (4) project professional services; (5) quality assurance and project organization; (6) construction, scheduling, and operation; (7) nuclear fuel handling and fuel management; (8) plant cost management; and (9) conclusion

QUEST for Quality for Students: A Student Quality Concept. Volume 3

Science.gov (United States)

Galán Palomares, Fernando Miguel; Todorovski, Blazhe; Kažoka, Asnate; Saarela, Henni

2013-01-01

This is the final publication of the QUEST for Quality for Students (QUEST) project, run by the European Students' Union. The QUEST project has managed to analyse students' views on the quality of higher education to identify areas in which students can become increasingly involved in quality assurance and enhancement processes. This publication…

Recent references

International Nuclear Information System (INIS)

Ramavataram, S.

1991-01-01

In support of a continuing program of systematic evaluation of nuclear structure data, the National Nuclear Data Center maintains a complete computer file of references to the nuclear physics literature. Each reference is tagged by a keyword string, which indicates the kinds of data contained in the article. This master file of Nuclear Structure References (NSR) contains complete keyword indexes to literature published since 1969, with partial indexing of older references. Any reader who finds errors in the keyword descriptions is urged to report them to the National Nuclear Data Center so that the master NSR file can be corrected. In 1966, the first collection of Recent References was published as a separate issue of Nuclear Data Sheets. Every four months since 1970, a similar indexed bibliography to new nuclear experiments has been prepared from additions to the NSR file and published. Beginning in 1978, Recent References was cumulated annually, with the third issue completely superseding the two issues previously published during a given year. Due to publication policy changes, cumulation of Recent Reference was discontinued in 1986. The volume and issue number of all the cumulative issues published to date are given. NNDC will continue to respond to individual requests for special bibliographies on nuclear physics topics, in addition to those easily obtained from Recent References. If the required information is available from the keyword string, a reference list can be prepared automatically from the computer files. This service can be provided on request, in exchange for the timely communication of new nuclear physics results (e.g., preprints). A current copy of the NSR file may also be obtained in a standard format on magnetic tape from NNDC. Requests for special searches of the NSR file may also be directed to the National Nuclear Data Center

Reference values of spirometry for Finnish adults.

Science.gov (United States)

Kainu, A; Timonen, K L; Toikka, J; Qaiser, B; Pitkäniemi, J; Kotaniemi, J T; Lindqvist, A; Vanninen, E; Länsimies, E; Sovijärvi, A R A

2016-09-01

Diagnostic assessment of lung function necessitates up-to-date reference values. The aim of this study was to estimate reference values for spirometry for the Finnish population between 18 and 80 years and to compare them with the existing Finnish, European and the recently published global GLI2012 reference values. Spirometry was performed for 1380 adults in the population-based FinEsS studies and for 662 healthy non-smoking volunteer adults. Detailed predefined questionnaire screening of diseases and symptoms, and quality control of spirometry yielded a sample of 1000 native Finns (387 men) healthy non-smokers aged 18-83 years. Sex-specific reference values, which are estimated using the GAMLSS method and adjusted for age and height, are provided. The predicted values for lung volumes are larger than those obtained by GLI2012 prediction for the Caucasian subgroup for forced vital capacity (FVC) by an average 6·2% and 5·1% and forced expiratory volume in 1 s (FEV1) by an average 4·2% and 3·0% in men and women, respectively. GLI2012 slightly overestimated the ratio FEV1/FVC with an age-dependent trend. Most reference equations from other European countries, with the exception of the Swiss SAPALDIA study, showed an underestimation of FVC and FEV1 to varying degrees, and a slight overestimation of FEV1/FVC. This study offers up-to-date reference values of spirometry for native Finns with a wide age range. The GLI2012 predictions seem not to be suitable for clinical use for native Finns due to underestimation of lung volumes. © 2015 The Authors. Clinical Physiology and Functional Imaging published by John Wiley & Sons Ltd on behalf of Scandinavian Society of Clinical Physiology and Nuclear Medicine.

Proposed Site Treatment Plan (PSTP). Volumes 1 and 2 and Reference Document

Energy Technology Data Exchange (ETDEWEB)

Helmich, E.; Noller, D.K.; Wierzbicki, K.S.; Bailey, L.L.

1994-12-22

The Compliance Plan Volume provides overall schedules with target dates for achieving compliance with the land disposal restrictions (LDR) and contains procedures to establish milestones to be enforced under the Order. Information regarding the technical evaluation of treatment options for SRS mixed wastes is contained in the Background Volume and is provided for informational purposes only.

Metrology of the radon in air volume activity at the italian radon reference chamber

Energy Technology Data Exchange (ETDEWEB)

Sciocchetti, G.; Cotellessa, G.; Soldano, E.; Pagliari, M. [Istituto Nazionale di Metrologia delle Radiazioni Ionizzanti, ENEA Centro Ricerche Casaccia Roma (Italy)

2006-07-01

The approach of the Italian National Institute of Ionising Radiations (I.N.M.R.I.-ENEA) on radon metrology has been based on a complete and integrated system which can be used to calibrate the main types of {sup 222}Rn in air measuring instruments with international traceability. The Italian radon reference chamber is a research and calibration facility developed at the Casaccia Research Center in Roma. This facility has an inner volume of one m{sup 3}. The wall is a cylindrical stainless steel vessel coupled with an automated climate apparatus operated both at steady and dynamic conditions. The control and data acquisition equipment is based on Radotron system, developed to automate the multitasking management of different sets of radon monitors and climatic sensors. A novel approach for testing passive radon monitors with an alpha track detector exposure standard has been developed. It is based on the direct measurement of radon exposure with a set of passive integrating monitors based on the new ENEA piston radon exposure meter. This paper describes the methodological approach on radon metrology, the status-of-art of experimental apparatus and the standardization procedures. (authors)

Metrology of the radon in air volume activity at the italian radon reference chamber

International Nuclear Information System (INIS)

Sciocchetti, G.; Cotellessa, G.; Soldano, E.; Pagliari, M.

2006-01-01

The approach of the Italian National Institute of Ionising Radiations (I.N.M.R.I.-ENEA) on radon metrology has been based on a complete and integrated system which can be used to calibrate the main types of 222 Rn in air measuring instruments with international traceability. The Italian radon reference chamber is a research and calibration facility developed at the Casaccia Research Center in Roma. This facility has an inner volume of one m 3 . The wall is a cylindrical stainless steel vessel coupled with an automated climate apparatus operated both at steady and dynamic conditions. The control and data acquisition equipment is based on Radotron system, developed to automate the multitasking management of different sets of radon monitors and climatic sensors. A novel approach for testing passive radon monitors with an alpha track detector exposure standard has been developed. It is based on the direct measurement of radon exposure with a set of passive integrating monitors based on the new ENEA piston radon exposure meter. This paper describes the methodological approach on radon metrology, the status-of-art of experimental apparatus and the standardization procedures. (authors)

Perl/Tk Pocket Reference

CERN Document Server

Lidie, Stephen

1998-01-01

The Perl/Tk Pocket Reference is a companion volume to Learning Perl/Tk, an O'Reilly Animal Guide. Learning Perl/Tk is a tutorial for Perl/Tk, the extension to Perl for creating graphical user interfaces. With Tk, Perl programs can be window-based rather than command-line based, with buttons, entry fields, listboxes, menus, scrollbars, balloons, tables, dialogs, and more. And Perl/Tk programs run on UNIX and Windows-based computers. This small book is a handy reference guide geared toward the advanced Perl/Tk programmer. Novice Perl/Tk programmers will find that its compact size gives th

Shock wave science and technology reference library

CERN Document Server

2009-01-01

This book is the second of several volumes on solids in the Shock Wave Science and Technology Reference Library. These volumes are primarily concerned with high-pressure shock waves in solid media, including detonation and high-velocity impact and penetration events. Of the four extensive chapters in this volume, the first two describe the reactive behavior of condensed phase explosives, - Condensed-Phase Explosives: Shock Initiation and Detonation Phenomena (SA Sheffield and R Engelke) - First Principles Molecular Simulations of Energetic Materials at High-Pressures (F Zhang, S Alavi, and TK Woo), and the remaining two discuss the inert, mechanical response of solid materials. - Combined Compression and Shear Plane Waves (ZP Tang and JB Aidun), and - Dynamic Fragmentation of Solids (D Grady). All chapters are each self-contained, and can be read independently of each other. They offer a timely reference, for beginners as well as professional scientists and engineers, on the foundations of detonation phenomen...

Low-level radioactive waste from commercial nuclear reactors. Volume 3. Bibliographic abstracts of significant source references. Part 2. Bibliography for treatment, storage, disposal and transportation regulatory constraints

Energy Technology Data Exchange (ETDEWEB)

Jolley, R.L.; Rodgers, B.R.

1986-05-01

The overall task of this program was to provide an assessment of currently available technology for treating commercial low-level radioactive waste (LLRW), to initiate development of a methodology for choosing one technology for a given application, and to identify research needed to improve current treatment techniques and decision methodology. The resulting report is issued in four volumes. Volume 3 of this series is a collection of abstracts of most of the reference documents used for this study. Because of the large volume of literature, the abstracts have been printed in two separate parts. Federal, state, and local regulations affect the decision process for selecting technology applications. Regulations may favor a particular technology and may prevent application of others. Volume 3, part 2 presents abstracts of the regulatory constraint documents that relate to all phases of LLRW management (e.g., treatment, packaging, storage, transportation, and disposal).

Fundamental Concepts in Biophysics Volume 1

CERN Document Server

Jue, Thomas

2009-01-01

HANDBOOK OF MODERN BIOPHYSICS Series Editor Thomas Jue, PhD Handbook of Modern Biophysics brings current biophysics topics into focus, so that biology, medical, engineering, mathematics, and physical-science students or researchers can learn fundamental concepts and the application of new techniques in addressing biomedical challenges. Chapters explicate the conceptual framework of the physics formalism and illustrate the biomedical applications. With the addition of problem sets, guides to further study, and references, the interested reader can continue to explore independently the ideas presented. Volume I: Fundamental Concepts in Biophysics Editor Thomas Jue, PhD In Fundamental Concepts in Biophysics, prominent professors have established a foundation for the study of biophysics related to the following topics: Mathematical Methods in Biophysics Quantum Mechanics Basic to Biophysical Methods Computational Modeling of Receptor–Ligand Binding and Cellular Signaling Processes Fluorescence Spectroscopy Elec...

Nuclear power. Volume 1. Nuclear power plant design

International Nuclear Information System (INIS)

Pedersen, E.S.

1978-01-01

NUCLEAR POWER PLANT DESIGN is intended to be used as a working reference book for management, engineers and designers, and as a graduate-level text for engineering students. The book is designed to combine theory with practical nuclear power engineering and design experience, and to give the reader an up-to-date view of the status of nuclear power and a basic understanding of how nuclear power plants function. Volume 1 contains the following chapters; (1) nuclear reactor theory; (2) nuclear reactor design; (3) types of nuclear power plants; (4) licensing requirements; (5) shielding and personnel exposure; (6) containment and structural design; (7) main steam and turbine cycles; (8) plant electrical system; (9) plant instrumentation and control systems; (10) radioactive waste disposal (waste management) and (11) conclusion

Virtual Reference Services.

Science.gov (United States)

Brewer, Sally

2003-01-01

As the need to access information increases, school librarians must create virtual libraries. Linked to reliable reference resources, the virtual library extends the physical collection and library hours and lets students learn to use Web-based resources in a protected learning environment. The growing number of virtual schools increases the need…

Self- and Other-Referent Criteria of Career Success.

Science.gov (United States)

Heslin, Peter A.

2003-01-01

Business students (n=71) evaluated their career success thus far. Framed by social comparison theory, results showed that 68% used other-referent criteria to assess their success. Participants who believed that ability and personality are fixed attributes had greater reliance on other-referent criteria. (Contains 100 references.) (SK)

Technical reference manual for TIME4. Version 1.0, Volume 1

International Nuclear Information System (INIS)

Wilmot, R.D.; Ringrose, P.S.; Larkin, J.P.A.; Kleissen, F.A.T.

1991-07-01

This document is the Technical Reference Manual for the TIME4 model. TIME4 is the environmental change model developed for use in the probabilistic risk analysis of deep disposal of radioactive waste. The Technical Reference Manual describes the theoretical background to the model. The modelling method is described, followed by a review of related work and a detailed description for each sub-model. (author)

NWTS conceptual reference repository description (CRRD). Volume 1. Summary

International Nuclear Information System (INIS)

1981-05-01

This report is a Conceptual Reference Repository Description (CRRD) for the terminal storage of spent, unreprocessed fuel assemblies and low-level transuranic waste. It is based on the following three previously prepared conceptual design reports: National Waste Terminal Storage in a Bedded Salt Formation for Spent Unreprocessed Fuel (NWTS-R2), prepared by Kaiser Engineers; National Waste Terminal Storage Repository Number 1 (NWTS-R1), prepared by Stearns-Roger; Spent Fuel Receiving and Packaging Facility Conceptual Design, prepared by Rockwell Hanford Operations and Kaiser Engineers. The CRRD is not itself a conceptual design report, but combines the key features of the above three reports into a description of a reference repository. This description is to be used as a basis for the preparation of a preliminary information report for the repositories. The CRRD discusses from a conceptual engineering standpoint the structures, systems, equipment, and operations necessary to (1) receive unreprocessed spent fuel assemblies via standard shipping casks, (2) offload these assemblies, (3) place the assemblies in canisters, (4) transport the canisters to underground storage locations in the salt dome, and (5) place these canisters in terminal storage. The CRRD also elaborates on the concepts for the retrieval and recovery of the spent fuel after burial; describes the development of the shafts and the underground areas,as well as the supporting operational utility and administrative features of the repository; and discusses the impacts on the reference repository of (1) changes in the waste package concept, (2) dry receiving and dry temporary storage of waste, (3) terminal storage of reprocessing waste, and (4) alternative underground development schemes

Measurement of normal ocular volume by the use of computed ...

African Journals Online (AJOL)

Background: Reduction or increase in ocular volume may indicate ocular pathology. Unfortunately the reference values utilized for ocular volume had been that of non-Africans. It is therefore pertinent to have a reference value of normal for Africans. Objective: To document the computer tomography (CT) scan measured ...

Student Support Teams: Helping Students Succeed in General Education Classrooms or Working To Place Students in Special Education?

Science.gov (United States)

Logan, Kent R.; Hansen, Carol D.; Nieminen, Paul K.; Wright, E. Heath

2001-01-01

A study involving 24 elementary teachers found they were not using Student Support Teams (SST) as designed. Teachers believed the primary purpose of SST was to test and place students into special education, referred students with whom they had not been successful, and believed there was a covert evaluation process. (Contains references.)…

Prevalence of stress references on college freshmen Facebook profiles.

Science.gov (United States)

Egan, Katie G; Moreno, Megan A

2011-10-01

Stress is common among college students and associated with adverse health outcomes. This study used the social networking Web site Facebook to identify self-reported stress and associated conditions among college students. Public Facebook profiles of undergraduate freshman at a large Midwestern State University (n = 300) were identified using a Facebook search. Content analysis of Facebook profiles included demographic information and displayed references to stress, weight concerns, depressive symptoms, and alcohol. The mean reported age was 18.4 years, and the majority of profile owners were female (62%). Stress references were displayed on 37% of the profiles, weight concerns on 6%, depressive symptoms on 24%, and alcohol on 73%. The display of stress references was associated with female sex (odds ratio [OR], 2.81; confidence interval [CI], 1.7-4.7), weight concerns (OR, 5.36; CI, 1.87-15.34), and depressive symptoms (OR, 2.7; CI, 1.57-4.63). No associations were found between stress and alcohol references. College freshmen frequently display references to stress on Facebook profiles with prevalence rates similar to self-reported national survey data. Findings suggest a positive association between referencing stress and both weight concerns and depressive symptoms. Facebook may be a useful venue to identify students at risk for stress-related conditions and to disseminate information about campus resources to these students.

Geometrical considerations in dose volume analysis in intracavitary treatment

International Nuclear Information System (INIS)

Deshpande, D.D.; Shrivastava, S.K.; Pradhan, A.S.; Viswanathan, P.S.; Dinshaw, K.A.

1996-01-01

The present work was aimed at to study the relationship between the volume enclosed by reference iodose surface and various geometrical parameters of the intracavitary applicator in treatment of carcinoma of cervix. Pearshape volume of the reference isodose derived from the Total Reference Air Kerma (TRAK) and the product of its dimensions, height H, width W and thickness T which is dependent on the applicator geometry, were estimated for 100 intracavitary applications treated by Selectron LDR machine. Orthogonal radiographs taken for each patient were used for measurement of actual geometric dimensions of the applicator and carrying out the dosimetry on TP-11 treatment planning system. The dimensions H, W and T of reference isodose surface (60 Gy) were also noted. Ratio of the product HWT and the pearshape volume was found mainly to be a function of colpostat separation and not of other geometrical parameters like maximum vertical and anterio-posterior dimension of the applicator. The ratio remained almost constant for a particular combination of uterine tandem and colpostat. Variation in the ratios were attributed to the non-standard geometry. The ratio of the volume of reference isodose surface to the product of its dimensions in the applicator depends upon the colpostat separation. (orig./MG) [de

National Environmental Policy Act compliance guide. Volume II (reference book)

Energy Technology Data Exchange (ETDEWEB)

NONE

1994-09-01

This document (Volume II of the National Environmental Policy Act Compliance Guide) contains current copies of regulations and guidance from the Council on Environmental Quality, the Department of Energy, the Department of State, and the Environmental Protection Agency, related to compliance with the National Environmental Policy Act of 1969 (NEPA).

Effectiveness of Cooperative Learning Instructional Tools With Predict-Observe-Explain Strategy on the Topic of Cuboid and Cube Volume

Science.gov (United States)

Nurhuda; Lukito, A.; Masriyah

2018-01-01

This study aims to develop instructional tools and implement it to see the effectiveness. The method used in this research referred to Designing Effective Instruction. Experimental research with two-group pretest-posttest design method was conducted. The instructional tools have been developed is cooperative learning model with predict-observe-explain strategy on the topic of cuboid and cube volume which consist of lesson plans, POE tasks, and Tests. Instructional tools were of good quality by criteria of validity, practicality, and effectiveness. These instructional tools was very effective for teaching the volume of cuboid and cube. Cooperative instructional tool with predict-observe-explain (POE) strategy was good of quality because the teacher was easy to implement the steps of learning, students easy to understand the material and students’ learning outcomes completed classically. Learning by using this instructional tool was effective because learning activities were appropriate and students were very active. Students’ learning outcomes were completed classically and better than conventional learning. This study produced a good instructional tool and effectively used in learning. Therefore, these instructional tools can be used as an alternative to teach volume of cuboid and cube topics.

Student Restraints to Reform: Conceptual Change Issues in Enhancing Students' Learning Processes.

Science.gov (United States)

Thomas, Gregory P.

1999-01-01

Describes a teacher-researcher's investigation into barriers to student adoption of an alternative referent for learning and its consequential learning strategies in an 11th-grade chemistry class. Suggests that various contextual factors influenced students' willingness to adopt the alternative referent, and that students' beliefs, trust of the…

Cyberplagiarism webliography. References to academic cyberplagiarism on the internet

Directory of Open Access Journals (Sweden)

Jaume Sureda

2008-12-01

Full Text Available This article provides references to the documentation sources available on the internet, which may give interested readers a deeper insight into aspects of the multi-faceted issue of academic plagiarism in the student community.With that aim in mind, this paper is divided into six sections. The first provides information on research groups and centres working on the issue of plagiarism. The second gives references to academic journals focusing directly on the issue of academic plagiarism, and some others which publish articles on that subject regularly. The third refers to conferences and events aimed at analysing this phenomenon. The next two sections provide bibliographies and studies on plagiarism among students. The last section refers to documentary sources on various strategies for countering plagiarism.

Reference Service and Bounded Rationality: Helping Students with Research.

Science.gov (United States)

Chu, Felix T.

1994-01-01

In university libraries, reference librarians often get ambiguous questions to which they try to give appropriate answers. Because of limitations on resources, time, and mental capability for information processing, the decision-making process involved in answering reference questions becomes bounded by the rationality of these constraints.…

Effectiveness of Reference Services in Providing Students ...

African Journals Online (AJOL)

after spending lots of money due to some reason and the other. .... services include various forms of current awareness and selective dissemination of ... the users. Personal attention is at the very heart of the reference desk, and the goal of the.

Electroacoustical reference data

CERN Document Server

Eargle, John M

2002-01-01

The need for a general collection of electroacoustical reference and design data in graphical form has been felt by acousticians and engineers for some time. This type of data can otherwise only be found in a collection of handbooks. Therefore, it is the author's intention that this book serve as a single source for many electroacoustical reference and system design requirements. In form, the volume closely resembles Frank Massa's Acoustic Design Charts, a handy book dating from 1942 that has long been out of print. The basic format of Massa's book has been followed here: For each entry, graphical data are presented on the right page, while text, examples, and refer­ ences appear on the left page. In this manner, the user can solve a given problem without thumbing from one page to the next. All graphs and charts have been scaled for ease in data entry and reading. The book is divided into the following sections: A. General Acoustical Relationships. This section covers the behavior of sound transmis­ sion in...

The Effect of Motion Analysis Activities in a Video-Based Laboratory in Students' Understanding of Position, Velocity and Frames of Reference

Science.gov (United States)

Koleza, Eugenia; Pappas, John

2008-01-01

In this article, we present the results of a qualitative research project on the effect of motion analysis activities in a Video-Based Laboratory (VBL) on students' understanding of position, velocity and frames of reference. The participants in our research were 48 pre-service teachers enrolled in Education Departments with no previous strong…

Analysis of E-mail Transactions in Virtual Reference Services

Directory of Open Access Journals (Sweden)

Astutik Nur Qomariyah

2018-01-01

Full Text Available Today, the use of traditional reference desk in the academic libraries has been rarely used, thus expanding or even move to a virtual reference service. A minimum level of virtual reference services are provided in the academic library is currently in general is the electronic mail (e-mail. One of the academic library specifically provide virtual reference services via e-mail is a Petra Christian University (PCU Library (refdesk@petra.ac.id.. In such services librarians provide assistance to users in finding information and answer questions. This study aimed to analyze the transaction reference services virtually through e-mail at the PCU Library, with a view of the types of questions based on user background, the writing style of language communication interaction used based on user background, and cultural values are revealed behind the user in virtual reference services (e-mail. This study uses content analysis (content analysis of the transcript e-mail received librarians of reference services began March 10 until June 16, 2015. The results showed that the types of questions asked in reference service virtual (e-mail in the Library UK Petra include: specific search, access online resources, operation of online resources, policies and procedures for services, and library holdings with background the student (PCU and non-PCU, faculty, and librarians. Based on the background of users found that overall more types of questions asked in virtual reference services (e-mail is a problem of access to online resources, and generally submitted by the students. Then, the writing style of the user's language in interaction reference service virtual (e-mail tends to be formal, which includes the word greeting, the message will be delivered, and regards cover, either by the student (PCU and non-PCU, lecturer, or librarians. While cultural values that revealed the background behind the user in virtual reference services (e-mail is obedience, courtesy and

Valores de referência para carboxiemoglobina Reference values for carboxyhemoglobin

Directory of Open Access Journals (Sweden)

Maria Elisa P. B. de Siqueira

1997-12-01

Full Text Available INTRODUÇÃO: Os valores de referência de indicadores biológicos são utilizados como parâmetros para interpretação de resultados de valores obtidos em indivíduos expostos ocupacionalmente aos agentes químicos. O Grupo Brasileiro para Estabelecimento dos Valores de Referência tem se dedicado a estas determinações objetivando estabelecer valores de referência para os diferentes bioindicadores em diversas regiões do País. Determinaram-se os valores de referência para a carboxiemoglobina (COHb no Sul de Minas Gerais. MATERIAL E MÉTODO: A COHb foi analisada pelo método espectrofométrico, otimizado no laboratório de análises toxicológicas. Em todas as amostras também foram realizadas análises de alguns parâmetros bioquímicos e hematológicos para atestar o estado de saúde da população, constituída de 200 voluntários não-fumantes e não-expostos, por motivo profissional, ao monóxido de carbono. Cada indivíduo respondeu um questionário para levantamento de dados relevantes à interpretação dos resultados. Os valores de referência foram expressos em termos da média ± desvio-padrão, intervalo de confiança 95% e valor de referência superior. A distribuição estatística dos resultados obtidos foi realizada para possibilitar sua comparação com grupos de trabalhadores, preferentemente à avaliação individual. RESULTADOS E CONCLUSÕES: O valor médio ± desvio-padrão para a carboxiemoglobina foi de 1,0 % ± 0,75; o intervalo de confiança 95%, entre 0,9 e 1,1 % e o valor de referência superior, de 2,5%. Através do teste t de Student (p INTRODUCTION: The reference values (RV of biological indicators are used in the interpretation of the results of such indicators in individuals occupationally exposed to chemical agents. The Brazilian Group for the Establishment of Reference Values has worked on these definitions for the purpose of establishing RVs for several bioindicators in various regions of the country. In

Los Alamos Controlled Air Incinerator for radioactive waste. Volume II. Engineering design reference manual

Energy Technology Data Exchange (ETDEWEB)

Koenig, R.A.; Draper, W.E.; Newmyer, J.M.; Warner, C.L.

1982-10-01

This two-volume report is a detailed design and operating documentation of the Los Alamos National Laboratory Controlled Air Incinerator (CAI) and is an aid to technology transfer to other Department of Energy contractor sites and the commercial sector. Volume I describes the CAI process, equipment, and performance, and it recommends modifications based on Los Alamos experience. It provides the necessary information for conceptual design and feasibility studies. Volume II provides descriptive engineering information such as drawings, specifications, calculations, and costs. It aids duplication of the process at other facilities.

Los Alamos Controlled Air Incinerator for radioactive waste. Volume II. Engineering design reference manual

International Nuclear Information System (INIS)

Koenig, R.A.; Draper, W.E.; Newmyer, J.M.; Warner, C.L.

1982-10-01

This two-volume report is a detailed design and operating documentation of the Los Alamos National Laboratory Controlled Air Incinerator (CAI) and is an aid to technology transfer to other Department of Energy contractor sites and the commercial sector. Volume I describes the CAI process, equipment, and performance, and it recommends modifications based on Los Alamos experience. It provides the necessary information for conceptual design and feasibility studies. Volume II provides descriptive engineering information such as drawings, specifications, calculations, and costs. It aids duplication of the process at other facilities

Comparing Linear Relationships between E-Book Usage and University Student and Faculty Populations: The Differences between E-Reference and E-Monograph Collections

Science.gov (United States)

Lamothe, Alain R.

2013-01-01

This paper reports the results from a quantitative study examining the strength of linear relationships between Laurentian University students and faculty members and the J. N. Desmarais Library's reference and monograph e-book collections. The number of full-text items accessed, searches performed, and undergraduate, graduate, and faculty…

The Implementation of Cumulative Learning Theory in Calculating Triangular Prism and Tube Volumes

Science.gov (United States)

Muklis, M.; Abidin, C.; Pamungkas, M. D.; Masriyah

2018-01-01

This study aims at describing the application of cumulative learning theory in calculating the volume of a triangular prism and a tube as well as revealing the students’ responses toward the learning. The research method used was descriptive qualitative with elementary school students as the subjects of the research. Data obtained through observation, field notes, questionnaire, tests, and interviews. The results from the application of cumulative learning theory obtained positive students’ responses in following the learning and students’ learning outcomes was dominantly above the average. This showed that cumulative learning could be used as a reference to be implemented in learning, so as to improve the students’ achievement.

Developmental Physical Education Accountability; Volume I.

Science.gov (United States)

Guarnieri, Barbara; Sandeen, Cecile

Presented in the first of a two volume series is a developmental physical education checklist which provides teachers of trainable mentally retarded students with a permanent and accountable record of pupil progress and needs. The checklist is intended to be used with the accompanying volume of curricular activities in a nongraded enviroment for…

Analysis of E-mail Transactions in Virtual Reference Services

Directory of Open Access Journals (Sweden)

Astutik Nur Qomariyah

2016-01-01

Full Text Available Today, the use of traditional reference desk in the academic libraries has been rarely used, thus expanding or even move to a virtual reference service. A minimum level of virtual reference services are provided in the academic library is currently in general is the electronic mail (e-mail. One of the academic library specifically provide virtual reference services via e-mail is a Petra Christian University (PCU Library (ref-desk@petra.ac.id.. In such services librarians provide assistance to users in finding information and answer questions. This study aimed to analyze the transaction reference services virtually through e-mail at the PCU Library, with a view of the types of questions based on user background, the writing style of language communication interaction used based on user background, and cultural values are revealed behind the user in virtual reference services (e-mail. This study uses content analysis (content analysis of the transcript e-mail received librarians of reference services began March 10 until June 16, 2015. The results showed that the types of questions asked in reference service virtual (e-mail in the Library UK Petra include: specific search, access online resources, operation of online resources, policies and procedures for services, and library holdings with background the student (PCU and non-PCU, faculty, and librarians. Based on the background of users found that overall more types of questions asked in virtual reference services (e-mail is a problem of access to online resources, and generally submitted by the students. Then, the writing style of the user's language in interaction reference service virtual (e-mail tends to be formal, which includes the word greeting, the message will be delivered, and regards cover, either by the student (PCU and non-PCU, lecturer, or librarians. While cultural values that revealed the background behind the user in virtual reference services (e-mail is obedience, courtesy and

A Usability Evaluation of Academic Virtual Reference Services

Science.gov (United States)

Chow, Anthony S.; Croxton, Rebecca A.

2014-01-01

This study examined the usability of five virtual reference services--instant messenger chat, e-mail, telephone, text messaging, and Skype videoconferencing--by having 31 undergraduate and graduate students evaluate the usability of the virtual reference services of two different universities. The study's results suggest that user preference and…

Elementary, Middle, and High School Students Vary in Frequency and Purpose When Using Online Digital References. A review of: Silverstein, Joanne. “Just Curious: Children’s Use of Digital Reference for Unimposed Queries and Its Importance in Informal Education.” Library Trends 54.2 (Fall 2005): 228‐44.

OpenAIRE

Julie Stephens

2006-01-01

Objective – To determine 1) how and with what frequency children use digital references to answer their own unimposed questions; 2) whether digital reference services support their self‐initiated learning; 3) whether digital reference services support the transfer of student motivation and curiosity from the formal to the informal; and 4) what instructional and software designers should consider in creating tools that support learning.Design – Inductive analysis.Setting – Virtual Reference De...

ASTM reference radiologic digital image standards

International Nuclear Information System (INIS)

Wysnewski, R.; Wysnewski, D.

1996-01-01

ASTM Reference Radiographs have been essential in defining industry's material defect grade levels for many years. ASTM Reference Radiographs are used extensively as even the American Society for Metals Nondestructive Inspection and Quality Control Metals Handbook, Volume 11, eighth edition refers to ASTM Standard Reference Radiographs. The recently published E 1648 Standard Reference Radiographs for Examination of Aluminum Fusion Welds is a prime example of the on-going need for these references. To date, 14 Standard Reference Radiographs have been published to characterize material defects. Standard Reference Radiographs do not adequately address film-less radiologic methods. There are differences in mediums to content with. On a computer CRT defect indications appear differently when compared to indications viewed in a radiograph on a view box. Industry that uses non-film radiologic methods of inspection can be burdened with additional time and money developing internal standard reference radiologic images. These references may be deemed necessary for grading levels of product defects. Because there are no ASTM Standard Reference Radiologic data files for addressing this need in the industry, the authors of this paper suggested implementing a method for their creation under ASTM supervision. ASTM can assure continuity to those users making the transition from analog radiographic images to digital image data by swiftly addressing the requirements for reference digital image standards. The current status and possible future activities regarding a method to create digital data files is presented in this paper summary

Electrical engineering a pocket reference

CERN Document Server

Schmidt-Walter, Heinz

2007-01-01

This essential reference offers you a well-organized resource for accessing the basic electrical engineering knowledge you need for your work. Whether you're an experienced engineer who appreciates an occasional refresher in key areas, or a student preparing to enter the field, Electrical Engineering: A Pocket Reference provides quick and easy access to fundamental principles and their applications. You also find an extensive collection of time-saving equations that help simplify your daily projects.Supported with more than 500 diagrams and figures, 60 tables, and an extensive index, this uniq

Reference values for acoustic rhinometry in decongested school children and adults

DEFF Research Database (Denmark)

Straszek, Sune P; Schlünssen, Vivi; Sigsgaard, Torben

2007-01-01

INTRODUCTION: Only a limited reference material for acoustic rhinometry (AR) exists for school children most often calculated as the minimum cross-sectional area (MCA) in the non-decongested nose. We want to establish a set of reference values for MCA and nasal volumes for both adults and childre...

Osmosis and Surface Area to Volume Ratio.

Science.gov (United States)

Barrett, D. R. B.

1984-01-01

Describes an experiment designed to help students understand the concepts of osmosis and surface area to volume ratio (SA:VOL). The task for students is to compare water uptake in different sizes of potato cubes and relate differences to their SA:VOL ratios. (JN)

Reference depth for geostrophic computation - A new method

Digital Repository Service at National Institute of Oceanography (India)

Varkey, M.J.; Sastry, J.S.

Various methods are available for the determination of reference depth for geostrophic computation. A new method based on the vertical profiles of mean and variance of the differences of mean specific volume anomaly (delta x 10) for different layers...

Ultrasonographic determination of the thyroid volume in 7- 10 years old children of Bushehr port 2007

Directory of Open Access Journals (Sweden)

Farzad Morad Haseli

2009-02-01

Full Text Available Background: Determination of thyroid volume using ultrasound has been recommended for monitoring public control of iodine deficiency programs in areas with mild iodine deficiency or with no iodine deficiency, instead of physical examination, in order to estimate the prevalence rate of goiter. The aim of this study was to determine the reference ranges of thyroid volume in Bushehr port. Methods: Thyroid volume of 1247 primary schoolchildren aged 7-10 years who were selected by probability proportionate to size method from rural and urban areas of Bushehr port was determined using ultrasonography. Medians and percentiles of thyroid volumes for age and body surface area were calculated for both genders. Results: The 97th percentiles of thyroid volume of Bushehr port schoolchildren according to age and sex were all lower than the corresponding sex-specific normative WHO reference values. Goiter prevalence was 1.68% according to WHO thyroid volume references for age in the studied population. The goiter prevalence according to age and body surface area-specific new normative WHO reference values were 7.13 and 7.17%, respectively. Conclusion: The 97th percentile for thyroid volume, calculated by ultrasonography in Bushehr port schoolchildren, were lower than the international WHO newly recommended reference values in all ages. Therefore, determination of a native reference value for estimating the prevalence rate of thyroid is highly recommended. According to ultrasonographically determined goiter prevalence, Bushehr is an iodine sufficient area.

Validation of equations and proposed reference values to estimate fat mass in Chilean university students.

Science.gov (United States)

Gómez Campos, Rossana; Pacheco Carrillo, Jaime; Almonacid Fierro, Alejandro; Urra Albornoz, Camilo; Cossío-Bolaños, Marco

2018-03-01

(i) To propose regression equations based on anthropometric measures to estimate fat mass (FM) using dual energy X-ray absorptiometry (DXA) as reference method, and (ii)to establish population reference standards for equation-derived FM. A cross-sectional study on 6,713 university students (3,354 males and 3,359 females) from Chile aged 17.0 to 27.0years. Anthropometric measures (weight, height, waist circumference) were taken in all participants. Whole body DXA was performed in 683 subjects. A total of 478 subjects were selected to develop regression equations, and 205 for their cross-validation. Data from 6,030 participants were used to develop reference standards for FM. Equations were generated using stepwise multiple regression analysis. Percentiles were developed using the LMS method. Equations for men were: (i) FM=-35,997.486 +232.285 *Weight +432.216 *CC (R 2 =0.73, SEE=4.1); (ii)FM=-37,671.303 +309.539 *Weight +66,028.109 *ICE (R2=0.76, SEE=3.8), while equations for women were: (iii)FM=-13,216.917 +461,302 *Weight+91.898 *CC (R 2 =0.70, SEE=4.6), and (iv) FM=-14,144.220 +464.061 *Weight +16,189.297 *ICE (R 2 =0.70, SEE=4.6). Percentiles proposed included p10, p50, p85, and p95. The developed equations provide valid and accurate estimation of FM in both sexes. The values obtained using the equations may be analyzed from percentiles that allow for categorizing body fat levels by age and sex. Copyright © 2017 SEEN y SED. Publicado por Elsevier España, S.L.U. All rights reserved.

Testicular Volume: Size Does Matter

International Nuclear Information System (INIS)

Reyes Lobo, Alexander; Segovia Fuentes, Javier; Cerpa Reyes, Edgar

2011-01-01

Testicular volume is critical for semen production and, consequently, for fertility. Hence the importance of knowing the normal size ranges and the different methods for calculating size, in order to classify patients at risk and refer them for appropriate management. Ultrasound is the first-line diagnostic method for the evaluation of testicular pathology, and it is also the best tool for estimating the volume of both testicles, bearing in mind that a testicular volume below 15 cc results in fertility problems. Although there are many causes of infertility, varicocele is undoubtedly the most important of all, because of its frequency and because it is amenable to curative surgical treatment.

Areas and Volumes in Pre-Calculus

Science.gov (United States)

Jarrett, Joscelyn A.

2008-01-01

This article suggests the introduction of the concepts of areas bounded by plane curves and the volumes of solids of revolution in Pre-calculus. It builds on the basic knowledge that students bring to a pre-calculus class, derives a few more formulas, and gives examples of some problems on plane areas and the volumes of solids of revolution that…

2000 Physical Acoustics Summer School (PASS 00). Volume II: Transparencies

National Research Council Canada - National Science Library

Bass, Henry

2001-01-01

.... Volume II of these proceedings contains copies of the transparencies used by the lecturers and Volume III contains background materials that were sent to student and discussion leader participants...

Compilation of anatomical, physiological and metabolic characteristics for a Reference Asian Man. Volume 1: data summary and conclusions. Results of a co-ordinated research programme 1988-1993

International Nuclear Information System (INIS)

1998-02-01

The Co-ordinated Research Programme (CRP) on Compilation of Anatomical, Physiological and Metabolic Characteristics for a Reference Asian Man has been conducted as a programme of the IAEA Regional Co-operative Agreement (RCA) for Asia and the Pacific. The CRP was conducted to provide data for radiation protection purposes that is relevant to the biokinetic and dosimetric characteristics of the ethnic populations in the Asian region. The radiological protection decisions that had to be made in the RCA member States following the Chernobyl accident were a significant motivation for establishing the CRP. Eleven RCA Member States participated in the CRP. Research co-ordination meetings (RCMs) for the CRP were held in Mito City, Japan, 17-21 October 1988 and Bhabha Atomic Research Centre, India, 8-12 April 1991. The concluding meeting was held in Tianjin, China, 25-29 October 1993. This publication is divided into two volumes: Volume 1 contains a summary of the data and conclusions from the project and Volume 2 the reports from participating countries

Compilation of anatomical, physiological and metabolic characteristics for a Reference Asian Man. Volume 1: data summary and conclusions. Results of a co-ordinated research programme 1988-1993

Energy Technology Data Exchange (ETDEWEB)

NONE

1998-02-01

The Co-ordinated Research Programme (CRP) on Compilation of Anatomical, Physiological and Metabolic Characteristics for a Reference Asian Man has been conducted as a programme of the IAEA Regional Co-operative Agreement (RCA) for Asia and the Pacific. The CRP was conducted to provide data for radiation protection purposes that is relevant to the biokinetic and dosimetric characteristics of the ethnic populations in the Asian region. The radiological protection decisions that had to be made in the RCA member States following the Chernobyl accident were a significant motivation for establishing the CRP. Eleven RCA Member States participated in the CRP. Research co-ordination meetings (RCMs) for the CRP were held in Mito City, Japan, 17-21 October 1988 and Bhabha Atomic Research Centre, India, 8-12 April 1991. The concluding meeting was held in Tianjin, China, 25-29 October 1993. This publication is divided into two volumes: Volume 1 contains a summary of the data and conclusions from the project and Volume 2 the reports from participating countries. Refs, figs, tabs.

Masked-Volume-Wise PCA and "reference Logan" illustrate similar regional differences in kinetic behavior in human brain PET study using [11C]-PIB

Directory of Open Access Journals (Sweden)

Engler Henry

2009-01-01

Full Text Available Abstract Background Kinetic modeling using reference Logan is commonly used to analyze data obtained from dynamic Positron Emission Tomography (PET studies on patients with Alzheimer's disease (AD and healthy volunteers (HVs using amyloid imaging agent N-methyl [11C]2-(4'-methylaminophenyl-6-hydroxy-benzothiazole, [11C]-PIB. The aim of the present study was to explore whether results obtained using the newly introduced method, Masked Volume Wise Principal Component Analysis, MVW-PCA, were similar to the results obtained using reference Logan. Methods MVW-PCA and reference Logan were performed on dynamic PET images obtained from four Alzheimer's disease (AD patients on two occasions (baseline and follow-up and on four healthy volunteers (HVs. Regions of interest (ROIs of similar sizes were positioned in different parts of the brain in both AD patients and HVs where the difference between AD patients and HVs is largest. Signal-to-noise ratio (SNR and discrimination power (DP were calculated for images generated by the different methods and the results were compared both qualitatively and quantitatively. Results MVW-PCA generated images that illustrated similar regional binding patterns compared to reference Logan images and with slightly higher quality, enhanced contrast, improved SNR and DP, without being based on modeling assumptions. MVW-PCA also generated additional MVW-PC images by using the whole dataset, which illustrated regions with different and uncorrelated kinetic behaviors of the administered tracer. This additional information might improve the understanding of kinetic behavior of the administered tracer. Conclusion MVW-PCA is a potential multivariate method that without modeling assumptions generates high quality images, which illustrated similar regional changes compared to modeling methods such as reference Logan. In addition, MVW-PCA could be used as a new technique, applicable not only on dynamic human brain studies but also on

Physical and anatomical data, and part of physiological and metabolic data for normal Japanese with special reference to establishing Reference Asian Man model for the anatomical characteristics

International Nuclear Information System (INIS)

Tanaka, G.; Kawamura, H.

1998-01-01

Studies on the physical, anatomical, and partial metabolic as well as physiological characteristics on Reference Japanese Man were undertaken to establish reference values for use in internal dose assessment and to assign annual limits on intakes of radionuclides for Japanese workers and members of the general public. Secular trends in, and/or probable influences of nutritional conditions on the organ mass were examined by comparing the present results with the other normal Japanese data. The average height of male and female adults (20-50 y) were 168 and 155 cm, respectively. The body weights for males and females, 20-50 y, were - 64 and 52 kg. The data on the weight and size of twelve organs in normal males and eleven in normal females were obtained from autopsy, 12 to 24 h after sudden death. The per caput intake of foodstuffs and principal nutrients were taken from the annual report of the National nutrition Survey for households in the urban and rural areas in all districts of Japan. Determination of elemental intake was made by collecting, one full day of meals for adult males from 31 prefectures in practically all districts of Japan. Pulmonary function parameters studied include total lung capacity, vital capacity, minute volume and 8 h working volume at various levels of exertion - resting, light and heavy activity. The subjects were healthy, normal Japanese males and females. Water balance data were obtained for 9 males and 6 females in Tokyo, under conditions of controlled energy and salt intake. The lengths of the study period were 6 and 10 days, respectively. Daily intakes of energy and salt were determined for the male student athletes for whom an indoor physical training was assigned. (author)

Stepping motor control processor reference manual. Volume I

International Nuclear Information System (INIS)

Holloway, F.W.; VanArsdall, P.J.; Suski, G.J.; Gant, R.G.; Rash, M.

1980-01-01

This manual is intended to serve several purposes. The first goal is to describe the capabilities and operation of the SMC processor package from an operator or user point of view. Secondly, the manual will describe in some detail the basic hardware elements and how they can be used effectively to implement a step motor control system. Practical information on the use, installation and checkout of the hardware set is presented in the following sections along with programming suggestions. Available related system software is described in this manual for reference and as an aid in understanding the system architecture. Section two presents an overview and operations manual of the SMC processor describing its composition and functional capabilities. Section three contains hardware descriptions in some detail for the LLL-designed hardware used in the SMC processor. Basic theory of operation and important features are explained

The Value of Chat Reference Services: A Pilot Study

Science.gov (United States)

Jacoby, JoAnn; Ward, David; Avery, Susan; Marcyk, Emilia

2016-01-01

This article explores student, instructor, and librarian perceptions of chat reference in the context of an introductory composition course. Participants in a mixed-method study responded to an anonymized chat transcript. While student respondents valued speed and efficiency, they were willing to receive instruction and open to questions that…

Effectiveness of reference services in providing students' information ...

African Journals Online (AJOL)

Data collected was analysed using descriptive statistics. ... The study recommends among other things: Effort should be geared toward recruiting ... information technologies facilities such computers and internet facilities such that students can ...

Shakespeare: A Student's Guide to Basic Reference Sources.

Science.gov (United States)

Claener, Anne, Comp.

Basic and standard reference materials dealing with William Shakespeare are listed in this bibliography. Annotated entries are grouped under the following headings: concordances, dictionaries, encyclopedias and handbooks, and bibliographies. The section on bibliographies is further divided into lists of editions of Shakespeare's work, general…

challenges with reference citations among postgraduate students at ...

African Journals Online (AJOL)

User

2012-12-30

Dec 30, 2012 ... the year in which the journal was published), title of the article, title of ... gives credit where it is due, adds authority to a statement and ..... The general rating ranged from. “poor .... Available at http://libweb.anglia.ac.uk/refere-.

Academic Librarians Should Be Sensitive to Language and Cultural Barriers When Providing Reference Service to International Students. A review of: Curry, Ann and Deborah Copeman. “Reference Service to International Students: A Field Stimulation Research Study.” Journal of Academic Librarianship 31.5 (Sep. 2005: 409‐20.

Directory of Open Access Journals (Sweden)

Lorie A. Kloda

2006-12-01

Full Text Available Objective – To evaluate the quality of reference service provided to non‐native, English‐speaking international students in academic libraries.Design – Field stimulation (unobtrusive testing.Setting – Eleven college and university libraries in the lower mainland of British Columbia, Canada, in the fall of 2003.Subjects – Library staff offering reference service at one of the participating libraries.Methods – The study utilized field stimulation, whereby an individual, or “proxy,” posed as a library user and initiated a reference encounter with library staff at each institution. In each case the proxy asked the same question to the library staff member. After the interaction was completed the proxy recorded all observed behaviours. Data were collected using a checklist of actions; a narrative record written by the proxy; and several evaluative questions. Each library was visited by the same proxy on two separate occasions for a total of 22 visits, of which 20 instances resulted in usable data. The narrative recordings of the reference encounters were analyzed using an open coding process.Main results – In 75% of the cases, the proxy was “‘satisfied” or “very satisfied” with help received from the library staff member and was “likely to” or “definitely would return to the staff member” in the future. The reference encounters lasted between a few minutes to half an hour in length, with most lasting between 5 and 15 minutes. Encounters that were brief (less than 5 minutes resulted in an evaluation of “dissatisfied” or “very dissatisfied” and “not likely to” or “definitely would not return.” Encounters where the library staff member extended an invitation to the proxy to return in the future were all rated with “high satisfaction” and “willingness to return.” The following reference service actions were observed in at least half of the encounters:• Asked questions for clarification (20�

Student Understanding of Time in Special Relativity: Simultaneity and Reference Frames.

Science.gov (United States)

Scherr, Rachel E.; Shaffer, Peter S.; Vokos, Stamatis

2001-01-01

Reports on an investigation of students' understanding of the concept of time in special relativity. Discusses a series of research tasks to illustrate how student reasoning of fundamental concepts of relativity was probed. Indicates that after standard instruction, students have serious difficulties with the relativity of simultaneity and the…

NATO Reference Mobility Model. Edition I. Users Guide. Volume I

Science.gov (United States)

1979-10-01

C TOTAL ERAKING FCRCE - SCIL /SLOPE/VEHICLE C --- ----.----------- C 275 R-2WJ58# VCLUIJE I PAGE A-103 APPEND-IX A - LISTING CF O.CFAt’ NRtPM C 1...sGCW vN1RAV ,SFTYPC 9TBF I- c r-------------------------~e e C tPAXIMUP BRAKING FCRCE * SCIL /SL OP E/V ENICLE/ DRIVER C --------------------- C C 1. VAR...CONTINUE GO TC 2160 ,ýObO IFl IST ,NE, 21 GC TG 2110i 317 R-20358, VOLUME I PAGE A-145 APPENDIX A - LISTING CF FRGG/iAM NAMM C 8. COARSE GRAINED SCIL IF

Futures Seminar: The United States Army in 2025 and Beyond. A Compendium of U.S. Army War College Student Papers. Volume 1

Science.gov (United States)

2014-06-01

Beyond.A Compendium of U.S. Army War College Student Papers. Volume 1 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) 5d...is expected to result in considerable cost savings due to use of existing 31. Edward C. Cardon , “Moving to the Future,” Army Technology 1, iss. 2

Transfer factor, lung volumes, resistance and ventilation distribution in healthy adults.

Science.gov (United States)

Verbanck, Sylvia; Van Muylem, Alain; Schuermans, Daniel; Bautmans, Ivan; Thompson, Bruce; Vincken, Walter

2016-01-01

Monitoring of chronic lung disease requires reference values of lung function indices, including putative markers of small airway function, spanning a wide age range.We measured spirometry, transfer factor of the lung for carbon monoxide (TLCO), static lung volume, resistance and ventilation distribution in a healthy population, studying at least 20 subjects per sex and per decade between the ages of 20 and 80 years.With respect to the Global Lung Function Initiative reference data, our subjects had average z-scores for forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC) and FEV1/FVC of -0.12, 0.04 and -0.32, respectively. Reference equations were obtained which could account for a potential dependence of index variability on age and height. This was done for (but not limited to) indices that are pertinent to asthma and chronic obstructive pulmonary disease studies: forced expired volume in 6 s, forced expiratory flow, TLCO, specific airway conductance, residual volume (RV)/total lung capacity (TLC), and ventilation heterogeneity in acinar and conductive lung zones.Deterioration in acinar ventilation heterogeneity and lung clearance index with age were more marked beyond 60 years, and conductive ventilation heterogeneity showed the greatest increase in variability with age. The most clinically relevant deviation from published reference values concerned RV/TLC values, which were considerably smaller than American Thoracic Society/European Respiratory Society-endorsed reference values. Copyright ©ERS 2016.

Analysis of the high water wave volume for the Sava River near Zagreb

Science.gov (United States)

Trninic, Dusan

2010-05-01

The paper analyses volumes of the Sava River high water waves near Zagreb during the period: 1926-2008 (N = 83 years), which is needed for more efficient control of high and flood waters. The primary Sava flood control structures in the City of Zagreb are dikes built on both riverbanks, and the Odra Relief Canal with lateral spillway upstream from the City of Zagreb. Intensive morphological changes in the greater Sava area near Zagreb, and anthropological and climate variations and changes at the Sava catchment up to the Zagreb area require detailed analysis of the water wave characteristics. In one analysis, maximum annual volumes are calculated for high water waves with constant duration of: 10, 20, 30, 40, 50 and 60 days. Such calculations encompass total quantity of water (basic and surface runoff). The log Pearson III distribution is adapted for this series of maximum annual volumes. Based on the results obtained, the interrelations are established between the wave volume as function of duration and occurrence probability. In addition to the analysis of maximum volumes of constant duration, it is interesting to carry out the analyses of maximum volume in excess of the reference discharge since it is very important for the flood control. To determine the reference discharges, a discharge of specific duration is used from an average discharge duration curve. The adopted reference discharges have durations of 50, 40, 30, 20 and 10%. Like in the previous case, log Pearson III distribution is adapted to the maximum wave data series. For reference discharge Q = 604 m3/s (duration 10%), a linear trend is calculated of maximum annual volumes exceeding the reference discharge for the Sava near Zagreb during the analyzed period. The analysis results show a significant decrease trend. A similar analysis is carried out for the following three reference discharges: regular flood control measures at the Sava near Zagreb, which are proclaimed when the water level is 350 cm

Comparison between hemoglobin and packed cell volume among young male and female students from a Medical College of Islamabad, Pakistan

International Nuclear Information System (INIS)

Zia, Q.U.A.

2015-01-01

To high light the importance of laboratory investigations for students and encourage them to participate in research. Methodology: This cross sectional study was carried out at Islamabad Medical and Dental College Islamabad for a three months period from April 1, 2014 to June 30, 2014. Students with age 18-20 years were chosen by convenience sampling for sample collection. Verbal consent was taken from candidates before sample collection. Packed cell volume (PCV) was measured by using Micro Hematocrit method and hemoglobin (Hb) concentration by Sahli acid haematin method. Data were analyzed using SPSS version 20. Results: Out of 106 students, there were 32 males and 74 females. Male participants had significantly greater Hb concentration and PCV as compared to females (p=0.05). Conclusion: Both Hb and PCV were significantly higher in males as compared to females of almost same age. For improving Hb concentration, dietary sources of iron and iron supplements may be used for better health of future generation. (author)

Distress Tolerance among Students Referred for Treatment Following Violation of\\ud Campus Cannabis Use Policy: Relations to Use, Problems, and Motivation

OpenAIRE

Buckner, Julia D.; Jeffries, Emily R.; Terlecki, Meredith A.; Ecker, Anthony H.

2015-01-01

Students referred to treatment after violating campus drug policies represent a high-risk\\ud group. Identification of factors related to these students’ cannabis use could inform prevention\\ud and treatment efforts. Distress tolerance (DT) is negatively related to substance-related\\ud behaviors and may be related to high-risk cannabis use vulnerability factors that can impact\\ud treatment outcome. Thus, the current study tested whether DT was related to cannabis use\\ud frequency, cannabis-rel...

Site Environmental Report for 1998 Volume II

International Nuclear Information System (INIS)

Ruggieri, Michael

1999-01-01

Volume II of the Site Environment Report for 1998 is provided by Ernest Orlando Lawrence Berkeley National Laboratory as a supplemental appendix to the report printed in volume I. Volume II contains the environmental monitoring and sampling data used to generate summary results in the main report for routine and non routine activities at the Laboratory (except for groundwater sampling data, which may be found in the reports referred to in chapter 6). Data presented in the tables are given in International System of Units (SI) units of measure

Subject Reference Lists Produced by Computer

Directory of Open Access Journals (Sweden)

Ching-chih Chen

1968-08-01

Full Text Available A system developed to produce fourteen subject reference lists by IBM 360/75 is described in detail. The computerized system has many advantages over conventional manual procedures. The feedback from students and other users is discussed, and some analysis of cost is included.

JavaScript Pocket Reference

CERN Document Server

Flanagan, David

1998-01-01

JavaScript is a powerful, object-based scripting language that can be embedded directly in HTML pages. It allows you to create dynamic, interactive Web-based applications that run completely within a Web browser -- JavaScript is the language of choice for developing Dynamic HTML (DHTML) content. JavaScript can be integrated effectively with CGI and Java to produce sophisticated Web applications, although, in many cases, JavaScript eliminates the need for complex CGI scripts and Java applets altogether. The JavaScript Pocket Reference is a companion volume to JavaScript: The Definitive Guide

ALA Library Schools and Subject Reference Coursework: A Short Communication

Science.gov (United States)

Condic, Kristine

2016-01-01

Reference librarians are exposed to the literature of different disciplines in a number of ways including advanced degrees, on the job training, and intellectual inquisitiveness. As students, many reference librarians were also exposed to library science programs offering coursework specializing in information sources and research within other…

Decline in Reference Transactions with Few Questions Referred to Librarian when the Reference Desk is Staffed by a Paraprofessional. A Review of: Dinkins, D., & Ryan, S. M. (2010. Measuring referrals: The use of paraprofessionals at the reference desk. The Journal of Academic Librarianship, 36(4, 279-286.

Directory of Open Access Journals (Sweden)

Diana K. Wakimoto

2011-03-01

Full Text Available Objective — To determine the type and percentage of questions referred to a librarian by a paraprofessional (i.e., an individual without an MLIS staffing the reference desk, whether the percentage of referrals would decrease over time, and any consequences from having a paraprofessional rather than a librarian staffing the desk.Design — Quantitative analysis of reference desk transaction statistics.Setting — Reference desk at the main library of Stetson University, a private university in the United States of America with approximately 2,500 FTE (full-time equivalent students.Subjects — A total of 486 reference desk transactions recorded by a paraprofessional staffing the reference desk during the Fall and Spring semesters of the 2008-2009 academic year.Methods — The first year that he worked in the Library at Stetson University, a paraprofessional recorded all reference desk transactions during his shift from 10:00am to 12:00pm, four days a week, for the Fall and Spring semesters of the 2008-2009 academic year. This paraprofessional, with computer expertise, received "relatively minimal" (p. 281 training on "reference desk policies and procedures… the use of the catalogue and the subscription databases" (p. 281. For each transaction, the paraprofessional categorized the question as "direction, " "reference, " or "machine. " He was instructed to contact a librarian if he could not answer a reference question. The paraprofessional also completed a questionnaire regarding his level of comfort answering questions and his thoughts on the training at the end of his first year of staffing the reference desk.Main Results — In the Fall semester, 9.5% of all reference desk transactions were referred to a librarian. This decreased to 4.2% of the total transactions during the Spring semester. The percentage of reference questions referred to a librarian in the Fall semester was 21.9% and only 5.0% in the Spring semester. There was a 49

User Perspectives of Reference Management Software in a Context-Based Learning Situation

OpenAIRE

Sara Akramy; Fredrik Offerlind

2013-01-01

Scientific writing is an important aspect of the student's education. Writing requires the student to give reference sources in a proper manner in accordance with a certain style. Experience has found that the process to deal with different styles requires time. Critical thinking is a fundamental requirement in scientific work and as such requires no detailed knowledge about different styles structure. Today's technology makes it possible to facilitate scientific writing using reference manag...

Spirometric reference values in urban children in Madagascar: poverty is a risk factor for low lung function.

Science.gov (United States)

Wolff, Peter Th; Arison, Lala; Rahajamiakatra, Abel; Raserijaona, Francis; Niggemann, Bodo

2014-01-01

Studies about children with respiratory diseases in Africa are impeded by the dearth of reliable data for the vast majority of countries on the continent. This study was conducted to establish representative reference values, therefore allowing a more accurate evaluation of lung function in Malagasy children. One thousand two hundred thirty-six students from three public and five private schools aged 8-12 years were recruited. A total of 1,093 children were healthy, had a valid lung function measurement and were thus deemed evaluable for this study. Lung function data were collected on consecutive days in Antananarivo, Madagascar's capital, using spirometry and a modified International Study of Asthma and Allergies in Childhood (ISAAC) questionnaire. The lung volumes found were substantially lower compared to Caucasian and African equations. The mean Z-score (Stanojevic) for the forced vital capacity (FVC) found was -1.45 and -0.93 for the forced expiratory volume in 1 sec (FEV1) with significant differences between private and public schools (FVC: P = 0.0023, FEV1: P = 0.0004). The equations established for school children in Madagascar's capital Antananarivo showed lung function values were lower than reference values for the same age group seen not only in European, but also in African American and African children. The unique ethnicity of the Malagasy people, which combines Southeast-Asian with substantial African influences, the heavy burden of pollution and poverty may explain these differences. © 2013 Wiley Periodicals, Inc.

User Perspectives of Reference Management Software in a Context-Based Learning Situation

Directory of Open Access Journals (Sweden)

Sara Akramy

2013-12-01

Full Text Available Scientific writing is an important aspect of the student's education. Writing requires the student to give reference sources in a proper manner in accordance with a certain style. Experience has found that the process to deal with different styles requires time. Critical thinking is a fundamental requirement in scientific work and as such requires no detailed knowledge about different styles structure. Today's technology makes it possible to facilitate scientific writing using reference management software. The current reference management tools available are license-based and others are available free through the Internet. In recent years, social media, such as Facebook, Blogs and Wikipedia have received increasing attention. The discussion, in educational settings, has touched on the pros and cons, but also on the potential opportunities using social media in educational settings. Social media creates opportunities for communication, which in turn affects learning. This learning can be described as collaborative. Illeris (2007 points out that such learning refers to activities where a group of people strive to learn and develop something together. Thus, it is the technical possibilities that facilitate communication and learning. From an educational point of view Vygotsky appears to be central in terms of pedagogy and technology. His theoretical argument is based on a sociocultural perspective where people learn from each other and are believed to be active in its social context using technology as a helpful instrument. Individual knowledge thus grows between individuals (Vygotsky, 1978. The teacher's role, based on Vygotsky's sociocultural perspective, is to encourage good learning environments, and thus use existing technology in the educational setting. With this background, the purpose of this study was to examine two different reference management software tools, Zotero (a social media free downloaded from Internet and EndNote (license

Reference values of inspiratory spirometry for Finnish adults.

Science.gov (United States)

Kainu, Annette; Timonen, Kirsi L; Vanninen, Esko; Sovijärvi, Anssi R

2018-03-07

Inspiratory spirometry is used in evaluation of upper airway disorders e.g. fixed or variable obstruction. There are, however, very few published data on normal values for inspiratory spirometry. The main aim of this study was to produce reference values for inspiratory spirometry for healthy Finnish adults. Inspiratory spirometry was preplanned to a sample of the Finnish spirometry reference values sample. Data was successfully retrieved from 368 healthy nonsmoking adults (132 males) between 19 and 83 years of age. Reference equations were produced for forced inspiratory vital capacity (FIVC), forced inspiratory volume in one second (FIV1), FIV1/FIVC, peak inspiratory flow (PIF) and the ratios of FIV1/forced expiratory volume in one second and PIF/peak expiratory flow. The present values were compared to PIF values from previously used Finnish study of Viljanen et al. (1982) reference values and Norwegian values for FIV1, FIVC and FIV1/FIVC presented by Gulsvik et al. (2001). The predicted values from the Gulsvik et al. (2001), provided a good fit for FIVC, but smaller values for FIV1 with mean 108.3 and 109.1% of predicted values for males and females, respectively. PIF values were 87.4 and 91.2% of Viljanen et al. (1982) predicted values in males and females, respectively. Differences in measurement methods and selection of results may contribute to the observed differences. Inspiratory spirometry is technically more demanding and needs repeatability criteria to improve validity. New reference values are suggested to clinical use in Finland when assessing inspiratory spirometry. Utility of inspiratory to expiratory values indices in assessment of airway collapse need further study.

Student Teacher Letters of Reference: A Critical Analysis

Science.gov (United States)

Mason, Richard W.; Schroeder, Mark P.

2012-01-01

Letters of reference are commonly used in acquiring a job in education. Despite serious issues of validity and reliability in writing and evaluating letters, there is a dearth of research that systematically examines the evaluation process and defines the constructs that define high quality letters. The current study used NVivo to examine 160…

PISA 2015 Results: Students' Financial Literacy. Volume IV

Science.gov (United States)

OECD Publishing, 2017

2017-01-01

The OECD Programme for International Student Assessment (PISA) examines not just what students know in science, reading and mathematics, but what they can do with what they know. Results from PISA show educators and policy makers the quality and equity of learning outcomes achieved elsewhere, and allow them to learn from the policies and practices…

Student Power in Africa

African Journals Online (AJOL)

Sociology, Faculty of Arts and Sciences, Harvard University, USA. ... publication, the book Student Politics in Africa: Representation and Activism, published .... reference to two moments in the country's student political history: the 1973 student.

Quantifying navigational information: The catchment volumes of panoramic snapshots in outdoor scenes.

Directory of Open Access Journals (Sweden)

Trevor Murray

Full Text Available Panoramic views of natural environments provide visually navigating animals with two kinds of information: they define locations because image differences increase smoothly with distance from a reference location and they provide compass information, because image differences increase smoothly with rotation away from a reference orientation. The range over which a given reference image can provide navigational guidance (its 'catchment area' has to date been quantified from the perspective of walking animals by determining how image differences develop across the ground plane of natural habitats. However, to understand the information available to flying animals there is a need to characterize the 'catchment volumes' within which panoramic snapshots can provide navigational guidance. We used recently developed camera-based methods for constructing 3D models of natural environments and rendered panoramic views at defined locations within these models with the aim of mapping navigational information in three dimensions. We find that in relatively open woodland habitats, catchment volumes are surprisingly large extending for metres depending on the sensitivity of the viewer to image differences. The size and the shape of catchment volumes depend on the distance of visual features in the environment. Catchment volumes are smaller for reference images close to the ground and become larger for reference images at some distance from the ground and in more open environments. Interestingly, catchment volumes become smaller when only above horizon views are used and also when views include a 1 km distant panorama. We discuss the current limitations of mapping navigational information in natural environments and the relevance of our findings for our understanding of visual navigation in animals and autonomous robots.

Quantifying navigational information: The catchment volumes of panoramic snapshots in outdoor scenes.

Science.gov (United States)

Murray, Trevor; Zeil, Jochen

2017-01-01

Panoramic views of natural environments provide visually navigating animals with two kinds of information: they define locations because image differences increase smoothly with distance from a reference location and they provide compass information, because image differences increase smoothly with rotation away from a reference orientation. The range over which a given reference image can provide navigational guidance (its 'catchment area') has to date been quantified from the perspective of walking animals by determining how image differences develop across the ground plane of natural habitats. However, to understand the information available to flying animals there is a need to characterize the 'catchment volumes' within which panoramic snapshots can provide navigational guidance. We used recently developed camera-based methods for constructing 3D models of natural environments and rendered panoramic views at defined locations within these models with the aim of mapping navigational information in three dimensions. We find that in relatively open woodland habitats, catchment volumes are surprisingly large extending for metres depending on the sensitivity of the viewer to image differences. The size and the shape of catchment volumes depend on the distance of visual features in the environment. Catchment volumes are smaller for reference images close to the ground and become larger for reference images at some distance from the ground and in more open environments. Interestingly, catchment volumes become smaller when only above horizon views are used and also when views include a 1 km distant panorama. We discuss the current limitations of mapping navigational information in natural environments and the relevance of our findings for our understanding of visual navigation in animals and autonomous robots.

Fuel Rod Consolidation Project: Phase 2, Final report: Volume 2, Appendices

International Nuclear Information System (INIS)

1987-01-01

This document, Volume 2, provides the appendices to Volume 1 of the Fuel Rod Consolidation Project. It provides information on the following: References; Trade-off Studies; Instrument List; RAM Data; Fabrication Specifications; Software Specifications; and Design Requirements

Estimating the Volumes of Solid Figures with Curved Surfaces.

Science.gov (United States)

Cohen, Donald

1991-01-01

Several examples of solid figures that calculus students can use to exercise their skills at estimating volume are presented. Although these figures are bounded by surfaces that are portions of regular cylinders, it is interesting to note that their volumes can be expressed as rational numbers. (JJK)

Choosing representative body sizes for reference adults and children

International Nuclear Information System (INIS)

Cristy, M.

1992-01-01

In 1975 the International Commission on Radiological Protection published a report on Reference Man (ICRP Publication 23), and a task group of the ICRP is now revising that report. Currently 'Reference Man [adult male] is defined as being between 20-30 years of age, weighing 70 kg, is 170 cm in height, is a Caucasian and is a Western European or North American in habitat and custom' (ICRP 23, p. 4). A reference adult female (58 kg, 160 cm) was also defined and data on the fetus and children were given, but with less detail and fewer specific reference values because the focus of the ICRP at that time was on young male radiation workers. The 70-kg Reference Man (earlier called Standard Man) has been used in radiation protection for 40 years, including the dosimetric schema for nuclear medicine, and this 70-kg reference has been used since at least the 1920's in physiological models. As is well known, humans in most parts of the world have increased in size (height and weight) since this standard was first adopted. Taking modern European populations as a reference and expanding the age range to 20-50 years, the author now suggests 176 cm height and 73-75 kg weight for adult males and 163 cm and about 60 kg for adult females would be more appropriate. The change in height is particularly important because many anatomical and physiological parameters - e.g., lean body mass, skeletal weight, total body water, blood volume, respiratory volumes - are correlated more closely with height than with weight. The difference in lean body mass between Asian and Caucasian persons, for example, is largely or wholly due to the difference in body height. Many equations for mean body water and other whole-body measures use body height as the only or the most important parameter, and so it is important that reference body height be chosen well

Geometry of lengths, areas, and volumes two-dimensional spaces, volume 1

CERN Document Server

Cannon, James W

2017-01-01

This is the first of a three volume collection devoted to the geometry, topology, and curvature of 2-dimensional spaces. The collection provides a guided tour through a wide range of topics by one of the twentieth century's masters of geometric topology. The books are accessible to college and graduate students and provide perspective and insight to mathematicians at all levels who are interested in geometry and topology. The first volume begins with length measurement as dominated by the Pythagorean Theorem (three proofs) with application to number theory; areas measured by slicing and scaling, where Archimedes uses the physical weights and balances to calculate spherical volume and is led to the invention of calculus; areas by cut and paste, leading to the Bolyai-Gerwien theorem on squaring polygons; areas by counting, leading to the theory of continued fractions, the efficient rational approximation of real numbers, and Minkowski's theorem on convex bodies; straight-edge and compass constructions, giving c...

Effects of achievement differences for internal/external frame of reference model investigations: A test of robustness of findings over diverse student samples.

Science.gov (United States)

Schmidt, Isabelle; Brunner, Martin; Preckel, Franzis

2017-11-12

Achievement in math and achievement in verbal school subjects are more strongly correlated than the respective academic self-concepts. The internal/external frame of reference model (I/E model; Marsh, 1986, Am. Educ. Res. J., 23, 129) explains this finding by social and dimensional comparison processes. We investigated a key assumption of the model that dimensional comparisons mainly depend on the difference in achievement between subjects. We compared correlations between subject-specific self-concepts of groups of elementary and secondary school students with or without achievement differences in the respective subjects. The main goals were (1) to show that effects of dimensional comparisons depend to a large degree on the existence of achievement differences between subjects, (2) to demonstrate the generalizability of findings over different grade levels and self-concept scales, and (3) to test a rarely used correlation comparison approach (CCA) for the investigation of I/E model assumptions. We analysed eight German elementary and secondary school student samples (grades 3-8) from three independent studies (Ns 326-878). Correlations between math and German self-concepts of students with identical grades in the respective subjects were compared with the correlation of self-concepts of students having different grades using Fisher's Z test for independent samples. In all samples, correlations between math self-concept and German self-concept were higher for students having identical grades than for students having different grades. Differences in median correlations had small effect sizes for elementary school students and moderate effect sizes for secondary school students. Findings generalized over grades and indicated a developmental aspect in self-concept formation. The CCA complements investigations within I/E-research. © 2017 The British Psychological Society.

Homogenization via formal multiscale asymptotics and volume averaging: How do the two techniques compare?

KAUST Repository

Davit, Yohan

2013-12-01

A wide variety of techniques have been developed to homogenize transport equations in multiscale and multiphase systems. This has yielded a rich and diverse field, but has also resulted in the emergence of isolated scientific communities and disconnected bodies of literature. Here, our goal is to bridge the gap between formal multiscale asymptotics and the volume averaging theory. We illustrate the methodologies via a simple example application describing a parabolic transport problem and, in so doing, compare their respective advantages/disadvantages from a practical point of view. This paper is also intended as a pedagogical guide and may be viewed as a tutorial for graduate students as we provide historical context, detail subtle points with great care, and reference many fundamental works. © 2013 Elsevier Ltd.

Authenticity and Learning: Implications for Reference Librarianship and Information Literacy Instruction

Science.gov (United States)

Klipfel, Kevin Michael

2015-01-01

This article articulates and defends a student-centered approach to reference and instructional librarianship defined by authentic engagement with students' interests. A review of the history of the construct of authenticity in philosophy, humanistic and existential psychology, and contemporary educational psychology is traced. Connections are…

Evaluating a Chat Reference Service at the University of South Alabama's Baugh Biomedical Library

Science.gov (United States)

Clanton, Clista C.; Staggs, Geneva B.; Williams, Thomas L.

2006-01-01

The University of South Alabama's Baugh Biomedical Library recently initiated a chat reference service targeted at distance education students in the biomedical sciences. After one year of service, the library conducted an evaluation of the chat reference to assess the success of this mode of reference service. Both traditional reference and…

Together in student success

African Journals Online (AJOL)

Journal of Student Affairs in Africa | Volume 2 (1) 2014, v–vi | 2307-6267 | DOI: 10.14426/jsaa.v2i1.45. I have had two opportunities to ... student affairs staff, as well as faculty and students, at a number of universities, including. Stellenbosch University, the .... The role of research and scholarship in the professionalisation of ...

Improving Higher Education Practice through Student Evaluation Systems: Is the Student Voice Being Heard?

Science.gov (United States)

Blair, Erik; Valdez Noel, Keisha

2014-01-01

Many higher education institutions use student evaluation systems as a way of highlighting course and lecturer strengths and areas for improvement. Globally, the student voice has been increasing in volume, and capitalising on student feedback has been proposed as a means to benefit teacher professional development. This paper examines the student…

ShockWave science and technology reference library

CERN Document Server

2007-01-01

This book is the first of several volumes on solids in the Shock Wave Science and Technology Reference Library. These volumes are primarily concerned with high-pressure shock waves in solid media, including detonation, high-velocity impact, and penetration. Of the eight chapters in this volume three chapters survey recent, exciting experimental advances in - ultra-short shock dynamics at the atomic and molecular scale (D.S. More, S.D. Mcgrane, and D.J. Funk), - Z accelerator for ICE and Shock compression (M.D. Knudson), and - failure waves in glass and ceramics (S.J. Bless and N.S. Brar). The subsequent four chapters are foundational, and cover the subjects of - equation of state (R. Menikoff), - elastic-plastic shock waves (R. Menikoff), - continuum plasticity (R. M. Brannon), and - numerical methods (D. J. Benson). The last chapter, but not the least, describes a tour de force illustration of today’s computing power in - modeling heterogeneous reactive solids at the grain scale (M.R. Baer). All chapters a...

Learning to Provide 3D Virtual Reference: A Library Science Assignment

Science.gov (United States)

Johnson, Megan; Purpur, Geraldine; Abbott, Lisa T.

2009-01-01

In spring semester 2009, two of the authors taught LIB 5020--Information Sources & Services to graduate library science students at Appalachian State University. The course covers information seeking patterns and provides an overview of reference services. The course is also designed to examine and evaluate library reference materials and…

Lawrence Berkeley National Laboratory 1995 site environmental report: Volume 2, Data appendix

International Nuclear Information System (INIS)

1996-07-01

Ernest Orlando Lawrence Berkeley National Laboratory presents Volume II, Data Appendix as a reference document to supplement the 1995 Site Environmental Report. Volume II contains the raw environmental monitoring and sampling data used to generate many of the summary results included in the main report. Supplemental data is provided for sitewide activities involving the media of stack and ambient air quality, rainwater, surface water, stormwater, wastewater, and soil and sediment. Volume II also contains supplemental data on the special preoperational monitoring study for the new Hazardous Waste Handling Facility. The Table of Contents provides a cross-reference to the data tables of the main report and this appendix. Data are given in System International (SI) units

Physical, anatomical, physiological and metabolic data for reference Indian man - a proposal

Energy Technology Data Exchange (ETDEWEB)

Dang, H S; Jaiswal, D D; Parameswaran, M; Krishnamony, S [Bhabha Atomic Research Centre, Bombay (India). Health Physics Div.

1994-12-31

The collation and generation of data on physical, anatomical, physiological and metabolic characteristics of Indian subjects were carried out to set up a Reference Indian Man for radiation protection. A comparison of the Reference Indian Man data with the corresponding data for ICRP Reference Man, clearly showed that the physical, anatomical and metabolic characteristics were in general smaller for Reference Indian Man. A few of the physiological characteristics such as the daily consumption of drinking water, sweat rate were however, found to be higher, and the minute volume was similar for Reference Indian, in comparison to the ICRP Reference Man. The details of various human characteristics representative of the Indian population are reported in this paper. (author). 43 refs., 25 tabs., 6 figs.

Physical, anatomical, physiological and metabolic data for reference Indian man - a proposal

International Nuclear Information System (INIS)

Dang, H.S.; Jaiswal, D.D.; Parameswaran, M.; Krishnamony, S.

1994-01-01

The collation and generation of data on physical, anatomical, physiological and metabolic characteristics of Indian subjects were carried out to set up a Reference Indian Man for radiation protection. A comparison of the Reference Indian Man data with the corresponding data for ICRP Reference Man, clearly showed that the physical, anatomical and metabolic characteristics were in general smaller for Reference Indian Man. A few of the physiological characteristics such as the daily consumption of drinking water, sweat rate were however, found to be higher, and the minute volume was similar for Reference Indian, in comparison to the ICRP Reference Man. The details of various human characteristics representative of the Indian population are reported in this paper. (author). 43 refs., 25 tabs., 6 figs

BOOK REVIEW: A Student's Guide to Einstein's Major Papers A Student's Guide to Einstein's Major Papers

Science.gov (United States)

Janssen, Michel

2013-12-01

just 26 pages (not counting six pages of notes and references) covers everything from Copernicus, Galileo, Kepler and Newton to Maxwell and Lorentz to Einstein's early biography to a cardboard version of Popper versus Kuhn, is too superficial to be useful for such a course. To a lesser extent, this is also true for chapter 6, which compresses the development of quantum theory after Einstein's 1905 paper into 20 pages (plus seven pages of notes and references) and for chapter 7, a brief epilogue. However, this is not my main worry. One could easily supplement or even replace the bookends of the volume with other richer sources and use this volume mainly for its excellent detailed commentaries on some Einstein classics in the four chapters in between. My more serious reservation about the use of the volume as a whole in a history of physics course, ironically, comes from the exact same feature that made me whole-heartedly recommend its core chapters for physics courses. This is especially true for the chapters on special and general relativity. How useful is it for a student to go through, in as much detail as this volume provides, the Lorentz transformation of Maxwell's equations in vector form? I can see how a student in an E&M class (with a section on special relativity) might benefit from this exercise. The clumsiness of the calculations in vector form by Lorentz and Einstein could help a student encountering Maxwell's equations in tensor form for the first time appreciate the advantages of the latter formalism. Similarly, it would be useful for a student in a GR class to go through the basics of tensor calculus in the old-fashioned but not inelegant mathematical introduction of Einstein's 1916 review article on general relativity. This could reinforce mastery of material that a student in a GR class will have to learn anyway (though Einstein's presentation of the mathematics of both special and general relativity in The Meaning of Relativity would seem to be more

Sandia software guidelines: Volume 5, Tools, techniques, and methodologies

Energy Technology Data Exchange (ETDEWEB)

1989-07-01

This volume is one in a series of Sandia Software Guidelines intended for use in producing quality software within Sandia National Laboratories. This volume describes software tools and methodologies available to Sandia personnel for the development of software, and outlines techniques that have proven useful within the Laboratories and elsewhere. References and evaluations by Sandia personnel are included. 6 figs.

Variability of Gross Tumor Volume in Nasopharyngeal Carcinoma Using 11C-Choline and 18F-FDG PET/CT.

Directory of Open Access Journals (Sweden)

Jun Jiang

Full Text Available This study was conducted to evaluate the variability of gross tumor volume (GTV using 11C-Choline and 18F-FDG PET/CT images for nasopharyngeal carcinomas boundary definition. Assessment consisted of inter-observer and inter-modality variation analysis. Four radiation oncologists were invited to manually contour GTV by using PET/CT fusion obtained from a cohort of 12 patients with nasopharyngeal carcinoma (NPC and who underwent both 11C-Choline and 18F-FDG scans. Student's paired-sample t-test was performed for analyzing inter-observer and inter-modality variability. Semi-automatic segmentation methods, including thresholding and region growing, were also validated against the manual contouring of the two types of PET images. We observed no significant variation in the results obtained by different oncologists in terms of the same type of PET/CT volumes. Choline fusion volumes were significantly larger than the FDG volumes (p < 0.0001, mean ± SD = 18.21 ± 8.19. While significantly consistent results were obtained between the oncologists and the standard references in Choline volumes compared with those in FDG volumes (p = 0.0025. Simple semi-automatic delineation methods indicated that 11C-Choline PET images could provide better results than FDG volumes (p = 0.076, CI = [-0.29, 0.025]. 11C-Choline PET/CT may be more advantageous in GTV delineation for the radiotherapy of NPC than 18F-FDG. Phantom simulations and clinical trials should be conducted to prove the possible improvement of the treatment outcome.

Evaluating the effectiveness of a training program that builds teachers' capability to identify and appropriately refer middle and high school students with mental health problems in Brazil: an exploratory study.

Science.gov (United States)

Vieira, Marlene A; Gadelha, Ary A; Moriyama, Taís S; Bressan, Rodrigo A; Bordin, Isabel A

2014-02-28

In Brazil, like many countries, there has been a failure to identify mental health problems (MHP) in young people and refer them to appropriate care and support. The school environment provides an ideal setting to do this. Therefore, effective programs need to be developed to train teachers to identify and appropriately refer children with possible MHP. We aimed to evaluate teachers' ability to identify and appropriately refer students with possible MHP, and the effectiveness of a psychoeducational strategy to build teachers' capability in this area. To meet the first objective, we conducted a case-control study using a student sample. To meet the second, we employed longitudinal design with repeated measures before and after introducing the psychoeducational strategy using a teacher sample. In the case control study, the Youth Self-Report was used to investigate internalizing and externalizing problems. Before training, teachers selected 26 students who they thought were likely to have MHP. Twenty-six non-selected students acted as controls and were matched by gender, age and grade. The underlying principle was that if teachers could identify abnormal behaviors among their actual students, those with some MHP would likely be among the case group and those without among the control group. In the longitudinal study, 32 teachers were asked to evaluate six vignettes that highlighted behaviors indicating a high risk for psychosis, depression, conduct disorder, hyperactivity, mania, and normal adolescent behavior. We calculated the rates of correct answers for identifying the existence of some MHP and the need for referral before and after training; teachers were not asked to identify the individual conditions. Teachers were already able to identify the most symptomatic students, who had both internalizing and externalizing problems, as possibly having MHP, but teachers had difficulty in identifying students with internalizing problems alone. At least 50.0% of teachers

Remarks on reporting and recording consistent with the ICRU Reference Dose

Directory of Open Access Journals (Sweden)

Gainey Mark

2009-10-01

Full Text Available Abstract Background ICRU 50/62 provides a framework to facilitate the reporting of external beam radiotherapy treatments from different institutions. A predominant role is played by points that represent "the PTV dose". However, for new techniques like Intensity Modulated Radiotherapy (IMRT - especially step and shoot IMRT - it is difficult to define a point whose dose can be called "characteristic" of the PTV dose distribution. Therefore different volume based methods of reporting of the prescribed dose are in use worldwide. Several of them were compared regarding their usability for IMRT and compatibility with the ICRU Reference Point dose for conformal radiotherapy (CRT in this study. Methods The dose distributions of 45 arbitrarily chosen volumes treated by CRT plans and 57 volumes treated by IMRT plans were used for comparison. Some of the IMRT methods distinguish the planning target volume (PTV and its central part PTVx (PTV minus a margin region of × mm. The reporting of dose prescriptions based on mean and median doses together with the dose to 95% of the considered volume (D95 were compared with each other and in respect of a prescription report with the aid of one or several possible ICRU Reference Points. The correlation between all methods was determined using the standard deviation of the ratio of all possible pairs of prescription reports. In addition the effects of boluses and the characteristics of simultaneous integrated boosts (SIB were examined. Results Two types of methods result in a high degree of consistency with the hitherto valid ICRU dose reporting concept: the median dose of the PTV and the mean dose to the central part of the PTV (PTVx. The latter is similar to the CTV, if no nested PTVs are used and no patient model surfaces are involved. A reporting of dose prescription using the CTV mean dose tends to overestimate the plateau doses of the lower dose plateaus of SIB plans. PTVx provides the possibility to approach

Remarks on reporting and recording consistent with the ICRU Reference Dose

International Nuclear Information System (INIS)

Bratengeier, Klaus; Oechsner, Markus; Gainey, Mark; Flentje, Michael

2009-01-01

ICRU 50/62 provides a framework to facilitate the reporting of external beam radiotherapy treatments from different institutions. A predominant role is played by points that represent 'the PTV dose'. However, for new techniques like Intensity Modulated Radiotherapy (IMRT) - especially step and shoot IMRT - it is difficult to define a point whose dose can be called 'characteristic' of the PTV dose distribution. Therefore different volume based methods of reporting of the prescribed dose are in use worldwide. Several of them were compared regarding their usability for IMRT and compatibility with the ICRU Reference Point dose for conformal radiotherapy (CRT) in this study. The dose distributions of 45 arbitrarily chosen volumes treated by CRT plans and 57 volumes treated by IMRT plans were used for comparison. Some of the IMRT methods distinguish the planning target volume (PTV) and its central part PTV x (PTV minus a margin region of × mm). The reporting of dose prescriptions based on mean and median doses together with the dose to 95% of the considered volume (D 95 ) were compared with each other and in respect of a prescription report with the aid of one or several possible ICRU Reference Points. The correlation between all methods was determined using the standard deviation of the ratio of all possible pairs of prescription reports. In addition the effects of boluses and the characteristics of simultaneous integrated boosts (SIB) were examined. Two types of methods result in a high degree of consistency with the hitherto valid ICRU dose reporting concept: the median dose of the PTV and the mean dose to the central part of the PTV (PTV x ). The latter is similar to the CTV, if no nested PTVs are used and no patient model surfaces are involved. A reporting of dose prescription using the CTV mean dose tends to overestimate the plateau doses of the lower dose plateaus of SIB plans. PTV x provides the possibility to approach biological effects

Peripheral blood volume influenced by various external factors

Energy Technology Data Exchange (ETDEWEB)

Ittner, A; Scheibe, J; Stoll, W [Friedrich-Schiller-Universitaet, Jena (German Democratic Republic). Bereich Medizin

1982-01-01

The dependence of the peripheral blood volume upon various exogenous factors was studied in male sports students using /sup 113m/InCl. The results obtained revealed that whole-body exertions and local muscular activity produce an increase of the blood volume in the lower extremities associated with increased blood circulation. The passive measures applied caused also an increase of the blood volume, but not in all of the subjects examined. Isometric concentrations led to a highly significant reduction of the peripheral blood volume. The scintigraphic method for the visualization of the blood volume in peripheral regions of the body can be regarded as suitable for the study of hemodynamics and for the substantiation of the efficiency of measures promoting restoration.

Students are Confident Using Federated Search Tools as much as Single Databases. A Review of: Armstrong, A. (2009. Student perceptions of federated searching vs. single database searching. Reference Services Review, 37(3, 291-303. doi:10.1108/00907320910982785

Directory of Open Access Journals (Sweden)

Deena Yanofsky

2011-09-01

�� Participants indicated a slight preference for using a federated search tool over a single multidisciplinary database. Of the 31 students who completed the evaluation worksheet, 16 (51.6% found that their search results were more relevant in the federated search tool; 10 (32.3% students reported that the articles they found were more relevant in the single database. Three students stated that both search tools produced equally relevant results and two students responded that neither resource produced relevant results on their topic.When asked to state which resource they would be likely to use in the future, 22 students (71% indicated that they would use the federated search tool and 21 (67.7% students answered that they would use the single multidisciplinary database. Of the participants who expressed potential use of the single database to look for articles in the future, 43% referred to the ease of use or efficiency of the search tool in their responses. Similarly, more than half of thestudents who stated that they would use the federated search tool in the future (54.5% also cited ease of use or efficiency in their answers.In total, 11 students (35.5% stated that they would be unlikely to use the federated search tool for future research. In their responses, students referred to the inefficiency or complexity of the research tool. Of the 12 participants (38.7% who stated that they would be unlikely to use the single multidisciplinary database, 50% cited a lack of relevant results and 42% referred to the overall complexity and inefficiency of the database.Conclusions – The results of this study do not support a significant preference among undergraduate students for either search tool. Though some participants struggled with terminology or various features of each resource, more students expressed confidence and satisfaction with the search process no matter which tool they opted to use.Given student confidence and comfort level in both research environments, the author

A comparative study of self-consolidating concretes incorporating high-volume natural pozzolan or high-volume fly ash

KAUST Repository

Celik, Kemal; Meral, Cagla; Mancio, Mauricio; Mehta, P. Kumar; Monteiro, Paulo J.M.

2014-01-01

The purpose of this study is to compare the effects of Portland cement replacement on the strength and durability of self-consolidating concretes (SSC). The two replacement materials used are high-volume natural pozzolan (HVNP), a Saudi Arabian aluminum-silica rich basaltic glass and high-volume Class-F fly ash (HVFAF), from Jim Bridger Power Plant, Wyoming, US. As an extension of the study, limestone filler (LF) is also used to replace Portland cement, alongside HVNP or HVFAF, forming ternary blends. Along with compressive strength tests, non-steady state chloride migration and gas permeability tests were performed, as durability indicators, on SCC specimens. The results were compared to two reference concretes; 100% ordinary Portland cement (OPC) and 85% OPC - 15% LF by mass. The HVNP and HVFAF concrete mixes showed strength and durability results comparable to those of the reference concretes; identifying that both can effectively be used to produce low-cost and environmental friendly SCC. © 2013 Elsevier Ltd. All rights reserved.

A comparative study of self-consolidating concretes incorporating high-volume natural pozzolan or high-volume fly ash

KAUST Repository

Celik, Kemal

2014-09-01

The purpose of this study is to compare the effects of Portland cement replacement on the strength and durability of self-consolidating concretes (SSC). The two replacement materials used are high-volume natural pozzolan (HVNP), a Saudi Arabian aluminum-silica rich basaltic glass and high-volume Class-F fly ash (HVFAF), from Jim Bridger Power Plant, Wyoming, US. As an extension of the study, limestone filler (LF) is also used to replace Portland cement, alongside HVNP or HVFAF, forming ternary blends. Along with compressive strength tests, non-steady state chloride migration and gas permeability tests were performed, as durability indicators, on SCC specimens. The results were compared to two reference concretes; 100% ordinary Portland cement (OPC) and 85% OPC - 15% LF by mass. The HVNP and HVFAF concrete mixes showed strength and durability results comparable to those of the reference concretes; identifying that both can effectively be used to produce low-cost and environmental friendly SCC. © 2013 Elsevier Ltd. All rights reserved.

Prevalence of Stress References on College Freshmen Facebook Profiles

OpenAIRE

EGAN, KATIE G.; MORENO, MEGAN A.

2011-01-01

Stress is common among college students and associated with adverse health outcomes. This study used the social networking Web site Facebook to identify self-reported stress and associated conditions among college students. Public Facebook profiles of undergraduate freshman at a large Midwestern State University (n = 300) were identified using a Facebook search. Content analysis of Facebook profiles included demographic information and displayed references to stress, weight concerns, depressi...

A DDC Bibliography on Computers in Information Sciences. Volume I. Information Sciences Series.

Science.gov (United States)

Defense Documentation Center, Alexandria, VA.

The unclassified and unlimited bibliography compiles references dealing specifically with the role of computers in information sciences. The volume contains 249 annotated references grouped under two major headings: Time Shared, On-Line, and Real Time Systems, and Computer Components. The references are arranged in accesion number (AD-number)…

Technology, safety, and costs of decommissioning a reference nuclear fuel reprocessing plant

International Nuclear Information System (INIS)

Schneider, K.J.; Jenkins, C.E.; Rhoads, R.E.

1977-09-01

Volume 2 comprises six appendices on: facility description; residual radioactivity inventory estimates; description and contamination levels of reference site; derivation of residual contamination levels; decommissioning mode detail; and decommissioning safety assessment details

Somatotype and body composition of volleyball players and untrained female students – reference group for comparison in sport

Directory of Open Access Journals (Sweden)

Pastuszak Anna

2016-12-01

Full Text Available There is substantial evidence that somatotype and success in sport and physical performance are positively related. Existing somatotype data on athletes are useful as guidelines for sport selection and choice of training appropriate to the enhancement of desired somatotype characteristics. Updated somatotype data from non-athlete reference groups complement comparative analysis applied in assessing the effects of the training process and selection. The aim of this study was to determine the somatotype of untrained girls studying at Warsaw University of Technology in 2011, in order to create a current reference group for comparison, and to investigate the difference in body build of female volleyball players compared with the non-athlete group. Twelve Second Division female volleyball players (age 21.6±1.5 years, body height 177.3±6.2 cm, body mass 71.0±6.5 kg, training experience 8.4±3.4 years and 150 female untrained students of the University of Technology in Warsaw (age 20.0±6.4 years, body height 166.5±6.4 cm, body mass 59.7±8.4 kg participated in a study carried out in 2011. Somatotype was determined using the Heath-Carter method. The volleyball players were a little older and were significantly taller and heavier than female students (p<0.05. Significant differences between the groups were found in breadth of the elbow, breadth of the wrist, biacromial diameter, arm circumference and crus circumference (p<0.05. The mean somatotype of the volleyball players was 4.5-3.4-2.8. (4.5±1.0-3.4±1.2-2.8±1.3, whilst that of the untrained students was 5.1-3.6-2.8. (5.1±1.4-3.6±1.1-2.8±1.3; the groups did not differ significantly in somatotype. The groups were significantly different in body composition (F [kg] and LBM [kg], as estimated by BIA and anthropometric methods (p<0.05. No differences were observed between the groups in the skinfolds. Morphological characteristics of the female volleyball players depended on the competition level

A novel correction factor based on extended volume to complement the conformity index.

Science.gov (United States)

Jin, F; Wang, Y; Wu, Y-Z

2012-08-01

We propose a modified conformity index (MCI), based on extended volume, that improves on existing indices by correcting for the insensitivity of previous conformity indices to reference dose shape to assess the quality of high-precision radiation therapy and present an evaluation of its application. In this paper, the MCI is similar to the conformity index suggested by Paddick (CI(Paddick)), but with a different correction factor. It is shown for three cases: with an extended target volume, with an extended reference dose volume and without an extended volume. Extended volume is generated by expanding the original volume by 0.1-1.1 cm isotropically. Focusing on the simulation model, measurements of MCI employ a sphere target and three types of reference doses: a sphere, an ellipsoid and a cube. We can constrain the potential advantage of the new index by comparing MCI with CI(Paddick). The measurements of MCI in head-neck cancers treated with intensity-modulated radiation therapy and volumetric-modulated arc therapy provide a window on its clinical practice. The results of MCI for a simulation model and clinical practice are presented and the measurements are corrected for limited spatial resolution. The three types of MCI agree with each other, and comparisons between the MCI and CI(Paddick) are also provided. The results from our analysis show that the proposed MCI can provide more objective and accurate conformity measurement for high-precision radiation therapy. In combination with a dose-volume histogram, it will be a more useful conformity index.

Teaching methodology for modeling reference evapotranspiration with artificial neural networks

OpenAIRE

Martí, Pau; Pulido Calvo, Inmaculada; Gutiérrez Estrada, Juan Carlos

2015-01-01

[EN] Artificial neural networks are a robust alternative to conventional models for estimating different targets in irrigation engineering, among others, reference evapotranspiration, a key variable for estimating crop water requirements. This paper presents a didactic methodology for introducing students in the application of artificial neural networks for reference evapotranspiration estimation using MatLab c . Apart from learning a specific application of this software wi...

Structure of the Wechsler Intelligence Scale for Children--Fourth Edition among a national sample of referred students.

Science.gov (United States)

Watkins, Marley W

2010-12-01

The structure of the Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV; D. Wechsler, 2003a) was analyzed via confirmatory factor analysis among a national sample of 355 students referred for psychoeducational evaluation by 93 school psychologists from 35 states. The structure of the WISC-IV core battery was best represented by four first-order factors as per D. Wechsler (2003b), plus a general intelligence factor in a direct hierarchical model. The general factor was the predominate source of variation among WISC-IV subtests, accounting for 48% of the total variance and 75% of the common variance. The largest 1st-order factor, Processing Speed, only accounted for 6.1% total and 9.5% common variance. Given these explanatory contributions, recommendations favoring interpretation of the 1st-order factor scores over the general intelligence score appear to be misguided.

Optimizing personalized normative feedback: the use of gender-specific referents.

Science.gov (United States)

Lewis, Melissa A; Neighbors, Clayton

2007-03-01

Many brief interventions include personalized normative feedback (PNF) using gender-specific or gender-neutral referents. Several theories suggest that information pertaining to more socially proximal referents should have greater influence on one's behavior compared with more socially distal referents. The current research evaluated whether gender specificity of the normative referent employed in PNF related to intervention efficacy. Following baseline assessment, 185 college students (45.2% women) were randomly assigned to one of three intervention conditions: gender-specific feedback, gender-neutral feedback, or assessment-only control. Immediately after completing measures of perceived norms, alcohol consumption, and gender identity, participants in the gender-neutral and gender-specific intervention conditions were provided with computerized information detailing their own drinking behavior, their perceptions of student drinking, and actual student drinking. After a 1-month follow-up, the results indicated that normative feedback was effective in changing perceived norms and reducing alcohol consumption for both intervention groups for women and men. The results provide support, however, for changes in perceived gender-specific norms as a mediator of the effects of normative feedback on reduced drinking behavior for women only. Additionally, gender-specific feedback was found to be more effective for women higher in gender identity, relative to the gender-neutral feedback. A post-assessment follow-up telephone survey administered to assess potential demand characteristics corroborated the intervention effects. Results extend previous research documenting efficacy of computer delivered PNF. Gender specificity and gender identity appear to be important elements to consider for PNF intervention efficacy for women.

APEX (Air Pollution Exercise) Volume 21: Legal References: Air Pollution Control Regulations.

Science.gov (United States)

Environmental Protection Agency, Research Triangle Park, NC. Office of Manpower Development.

The Legal References: Air Pollution Control Regulations Manual is the last in a set of 21 manuals (AA 001 009-001 029) used in APEX (Air Pollution Exercise), a computerized college and professional level "real world" game simulation of a community with urban and rural problems, industrial activities, and air pollution difficulties. The manual…

Compilation of anatomical, physiological and metabolic characteristics for a Reference Asian Man. Volume 2: Country reports. Results of a co-ordinated research programme 1988-1993

International Nuclear Information System (INIS)

1998-02-01

The coordinated Research Programme (CRP) on Compilation of Anatomical, Physiological and Metabolic Characteristics for a Reference Asian Man has been conducted as a programme of the IAEA Regional Co-operative Agreement (RCA) for Asia and the Pacific. The CRP was conducted to provide data for radiation protection purposes that is relevant to the biokinetic and dosimetric characteristics of the ethnic populations in the Asian region The radiological protection decisions that had to be made in the RCA member States following the Chernobyl accident were a significant motivation for establishing the CRP. Funding for the RCM by the Government of Japan is gratefully acknowledged. The IAEA wishes to thank S. Kobayashi for his efforts in support of the CRP. The IAEA extends its appreciation to the Japanese National Institute of Radiological Sciences for acting as the technical secretariat to co-ordinate the work of data compilation. Specifically, the IAEA acknowledges the contributions of H. Kawamura, G. Tanaka and T. Koyanagi. Appreciation is also extended to the National Institute of Radiological Sciences, Japan, the Bhabha Atomic Research Centre, India, and the Chinese Academy of Medical Sciences for the valuable contribution they made to the CRP as hosts for the RCMS. The IAEA officers responsible for this publication were A. Moiseev and R.V. Griffith of the Division of Radiation and Waste Safety. This publication is divided into two volumes: Volume 1 contains a summary of the data and conclusions from the project and Volume 2 the reports from participating countries

Bibliography on nuclear medicine. Volumes 28--30

International Nuclear Information System (INIS)

1975-07-01

References to 3177 publications related to nuclear medicine announced in Nuclear Science Abstracts (NSA) volumes 28(July-Dec. 1973), 29(Jan-June 1974), and 30(July-Dec. 1974) are contained in this bibliography. Subject, report number, and personal author indexes are included. (U.S.)

Reference and access innovative practices for archives and special collections

CERN Document Server

Theimer, Kate

2014-01-01

Reference and Access: Innovative Practices for Archives and Special Collections explores how archives of different sizes and types are increasing their effectiveness in serving the public and meeting internal needs. The book features twelve case studies that demonstrate new ways to interact with users to answer their questions, provide access to materials, support patrons in the research room, and manage reference and access processes. This volume will be useful to those working in archives and special collections as well as other cultural heritage organizations, and provides ideas ranging fro

PhysLink Physics and Astronomy online education and reference

CERN Document Server

The PhysLink.com is a comprehensive physics and astronomy online education, research and reference web site. In addition to providing high-quality content, PhysLink.com is a meeting place for professionals, students and other curious minds.

Transportation management center data capture for performance and mobility measures reference manual.

Science.gov (United States)

2013-03-01

The Guide to Transportation Management Center (TMC) Data Capture for Performance and Mobility Measures is a two-volume document consisting of a summary Guidebook and this Reference Manual. These documents provide technical guidance and recommended pr...

Automatic delineation of functional lung volumes with 68Ga-ventilation/perfusion PET/CT.

Science.gov (United States)

Le Roux, Pierre-Yves; Siva, Shankar; Callahan, Jason; Claudic, Yannis; Bourhis, David; Steinfort, Daniel P; Hicks, Rodney J; Hofman, Michael S

2017-10-10

Functional volumes computed from 68 Ga-ventilation/perfusion (V/Q) PET/CT, which we have shown to correlate with pulmonary function test parameters (PFTs), have potential diagnostic utility in a variety of clinical applications, including radiotherapy planning. An automatic segmentation method would facilitate delineation of such volumes. The aim of this study was to develop an automated threshold-based approach to delineate functional volumes that best correlates with manual delineation. Thirty lung cancer patients undergoing both V/Q PET/CT and PFTs were analyzed. Images were acquired following inhalation of Galligas and, subsequently, intravenous administration of 68 Ga-macroaggreted-albumin (MAA). Using visually defined manual contours as the reference standard, various cutoff values, expressed as a percentage of the maximal pixel value, were applied. The average volume difference and Dice similarity coefficient (DSC) were calculated, measuring the similarity of the automatic segmentation and the reference standard. Pearson's correlation was also calculated to compare automated volumes with manual volumes, and automated volumes optimized to PFT indices. For ventilation volumes, mean volume difference was lowest (- 0.4%) using a 15%max threshold with Pearson's coefficient of 0.71. Applying this cutoff, median DSC was 0.93 (0.87-0.95). Nevertheless, limits of agreement in volume differences were large (- 31.0 and 30.2%) with differences ranging from - 40.4 to + 33.0%. For perfusion volumes, mean volume difference was lowest and Pearson's coefficient was highest using a 15%max threshold (3.3% and 0.81, respectively). Applying this cutoff, median DSC was 0.93 (0.88-0.93). Nevertheless, limits of agreement were again large (- 21.1 and 27.8%) with volume differences ranging from - 18.6 to + 35.5%. Using the 15%max threshold, moderate correlation was demonstrated with FEV1/FVC (r = 0.48 and r = 0.46 for ventilation and perfusion images, respectively

Viability Assessment Volume 2

International Nuclear Information System (INIS)

1998-01-01

This volume describes the major design features of the Monitored Geologic Repository. This document is not intended to provide an exhaustive, detailed description of the repository design. Rather, this document summarizes the major systems and primary elements of the design that are radiologically significant, and references the specific technical documents and design analyses wherein the details can be found. Not all portions of the design are at the same level of completeness. Highest priority has been given to assigning resources to advance the design of the Monitored Geologic Repository features that are important to radiological safety and/or waste isolation and for which there is no NRC licensing precedent. Those features that are important to radiological safety and/or waste isolation, but for which there is an NRC precedent, receive second priority. Systems and features that have no impact on radiological safety or waste isolation receive the lowest priority. This prioritization process, referred to as binning, is discussed in more detail in Section 2.3. Not every subject discussed in this volume is given equal treatment with regard to the level of detail provided. For example, less detail is provided for the surface facility design than for the subsurface and waste package designs. This different level of detail is intentional. Greater detail is provided for those functions, structures, systems, and components that play key roles with regard to protecting radiological health and safety and that are not common to existing nuclear facilities already licensed by NRC. A number of radiological subjects are not addressed in the VA, (e.g., environmental qualification of equipment). Environmental qualification of equipment and other radiological safety considerations will be addressed in the LA. Non-radiological safety considerations such as silica dust control and other occupational safety considerations are considered equally important but are not addressed in

Reference values for urinary oxalate, calcium, citrate, uric acid, phosphate, magnesium, sulphate and sodium in biochemistry students at Universidad Nacional del Litoral, Argentina

Directory of Open Access Journals (Sweden)

Verónica Fernández

2017-10-01

Full Text Available Introduction: Urolithiasis (UL is a common disease whose incidence increased in the last quarter of the twentieth century. Metabolic evaluation is necessary for diagnosis, which requires the establishment of reference values (RV for the population in question. Objective: To determine the RV for calcium, oxalate, citrate, uric acid, phosphate, magnesium, sulphate and sodium in 24-hour urine belonging to students from the School of Biochemistry and Biological Sciences at Universidad Nacional del Litoral, province of Santa Fe, Argentina. Once RV were established, a frequency of alterations was determined and then compared with literature data. Methods: The NCCLSC28-A3 guideline (2008 was used. The study group included 69 students. The enzymatic colorimetric method, a Metrolab 1600 plus spectrophotometer and a DIESTRO ionselective electrode were also employed. Results: The RV found (95 % CI were the following: oxalate, 1.96-45.08; calcium, 20.65-250.74; citrate, 112.78-666.01; uric acid, 58.73-782.17; phosphate, 238.37-1051.44; magnesium, 28.7-146.67, all these values expressed as mg/24h; sulphate, 3.15-25.18 mmol/24h, and sodium, 42.81-285.3 mEq/24h. These findings emerged as well: hyperoxaluria, 3 %; hypercalciuria 12 %; hypocitraturia, 3 %; hyperuricosuria, 6 %; hyperphosphaturia, 6 %; hypomagnesuria, 6 %; hypernatriuria, 7 %, and hypersulphaturia, 0 %. When RV were compared, some analyte levels were similar and others showed a considerable difference. Conclusions: The diagnosis of UL through the study of metabolic changes is different according to the reference value used. Applying reference values established for other populations, including those of commercial kits manufacturers, may lead to a diagnosis which does not match the clinical condition of the patient.

Predicting oropharyngeal tumor volume throughout the course of radiation therapy from pretreatment computed tomography data using general linear models.

Science.gov (United States)

Yock, Adam D; Rao, Arvind; Dong, Lei; Beadle, Beth M; Garden, Adam S; Kudchadker, Rajat J; Court, Laurence E

2014-05-01

The purpose of this work was to develop and evaluate the accuracy of several predictive models of variation in tumor volume throughout the course of radiation therapy. Nineteen patients with oropharyngeal cancers were imaged daily with CT-on-rails for image-guided alignment per an institutional protocol. The daily volumes of 35 tumors in these 19 patients were determined and used to generate (1) a linear model in which tumor volume changed at a constant rate, (2) a general linear model that utilized the power fit relationship between the daily and initial tumor volumes, and (3) a functional general linear model that identified and exploited the primary modes of variation between time series describing the changing tumor volumes. Primary and nodal tumor volumes were examined separately. The accuracy of these models in predicting daily tumor volumes were compared with those of static and linear reference models using leave-one-out cross-validation. In predicting the daily volume of primary tumors, the general linear model and the functional general linear model were more accurate than the static reference model by 9.9% (range: -11.6%-23.8%) and 14.6% (range: -7.3%-27.5%), respectively, and were more accurate than the linear reference model by 14.2% (range: -6.8%-40.3%) and 13.1% (range: -1.5%-52.5%), respectively. In predicting the daily volume of nodal tumors, only the 14.4% (range: -11.1%-20.5%) improvement in accuracy of the functional general linear model compared to the static reference model was statistically significant. A general linear model and a functional general linear model trained on data from a small population of patients can predict the primary tumor volume throughout the course of radiation therapy with greater accuracy than standard reference models. These more accurate models may increase the prognostic value of information about the tumor garnered from pretreatment computed tomography images and facilitate improved treatment management.

Predicting oropharyngeal tumor volume throughout the course of radiation therapy from pretreatment computed tomography data using general linear models

International Nuclear Information System (INIS)

Yock, Adam D.; Kudchadker, Rajat J.; Rao, Arvind; Dong, Lei; Beadle, Beth M.; Garden, Adam S.; Court, Laurence E.

2014-01-01

Purpose: The purpose of this work was to develop and evaluate the accuracy of several predictive models of variation in tumor volume throughout the course of radiation therapy. Methods: Nineteen patients with oropharyngeal cancers were imaged daily with CT-on-rails for image-guided alignment per an institutional protocol. The daily volumes of 35 tumors in these 19 patients were determined and used to generate (1) a linear model in which tumor volume changed at a constant rate, (2) a general linear model that utilized the power fit relationship between the daily and initial tumor volumes, and (3) a functional general linear model that identified and exploited the primary modes of variation between time series describing the changing tumor volumes. Primary and nodal tumor volumes were examined separately. The accuracy of these models in predicting daily tumor volumes were compared with those of static and linear reference models using leave-one-out cross-validation. Results: In predicting the daily volume of primary tumors, the general linear model and the functional general linear model were more accurate than the static reference model by 9.9% (range: −11.6%–23.8%) and 14.6% (range: −7.3%–27.5%), respectively, and were more accurate than the linear reference model by 14.2% (range: −6.8%–40.3%) and 13.1% (range: −1.5%–52.5%), respectively. In predicting the daily volume of nodal tumors, only the 14.4% (range: −11.1%–20.5%) improvement in accuracy of the functional general linear model compared to the static reference model was statistically significant. Conclusions: A general linear model and a functional general linear model trained on data from a small population of patients can predict the primary tumor volume throughout the course of radiation therapy with greater accuracy than standard reference models. These more accurate models may increase the prognostic value of information about the tumor garnered from pretreatment computed tomography

The peripheral blood volume influenced by various external factors

International Nuclear Information System (INIS)

Ittner, A.; Scheibe, J.; Stoll, W.

1982-01-01

The dependence of the peripheral blood volume upon various exogenous factors was studied in male sports students using /sup 113m/InCl. The results obtained revealed that whole-body exertions and local muscular activity produce an increase of the blood volume in the lower extremities associated with increased blood circulation. The passive measures applied caused also an increase of the blood volume, but not in all of the subjects examined. Isometric concentrations led to a highly significant reduction of the peripheral blood volume. The scintigraphic method for the visualization of the blood volume in peripheral regions of the body can be regarded as suitable for the study of hemodynamics and for the substantiation of the efficiency of measures promoting restoration. (author)

Software Assurance Curriculum Project Volume 1: Master of Software Assurance Reference Curriculum

Science.gov (United States)

2010-08-01

developed products. The above definition was derived from these references: [IEEE-CS 2008] ISO /IEC 12207 , IEEE Std 12207 -2008, Systems and Software...Systems [CNSS 2009]. Software quality Capability of a software product to satisfy stated and implied needs when used under specified conditions [ ISO ...Curriculum ISO International Organization for Standardization IT information technology KA knowledge area KU knowledge unit MBA Master of

Crux of Time Management for Students

Indian Academy of Sciences (India)

Home; Journals; Resonance – Journal of Science Education; Volume 21; Issue 1. Crux of Time Management for Students. Felix Bast. General Article Volume ... Keywords. Bibliography; Cornell method; Eisenhower matrix; events; personal productivity; Pomodoro technique; procrastination; scheduling; SQ3R method; tasks.

Effect of direct neuroradiologist participation in physician marketing on imaging volumes in outpatient radiology.

Science.gov (United States)

Grignon, L; Keiper, M; Vavricek, J; Horsley, W; Murphy, R; Grignon, A; Yu, F

2014-08-01

Over the past several years, decreased demand for and increased supply of imaging services has increased competition among outpatient imaging centers in the United States. This study hypothesizes that using a radiology sales representative and neuroradiologist as a team in marketing and sales will increase imaging referrals in outpatient imaging. From January to December 2009, baseline monthly physician referral data of CT and MR scans of 19 referring clinicians (neurologists, neurosurgeons, and anesthesiologists) to an outpatient radiology group were collected. During that time, a nonphysician radiology sales representative visited the referring clinicians' offices every 2 weeks. From January to June 2010, the same radiology sales representative visited the referring clinicians' offices every 2 weeks but was accompanied by a neuroradiologist once a month. From July 2010 to June 2011, the same radiology sales representative visited the referring clinicians' offices twice a month without a neuroradiologist. Cross-sectional imaging referral volumes were approximately 2.5 times greater during the 6-month period using the neuroradiologist for direct physician-to-physician marketing when compared with the volumes achieved with the sales representative alone, and continued neuroradiologist involvement in marketing and sales is required to maintain referral volumes over time. The impact on imaging referral volumes during the 6-month use of the neuroradiologist for direct physician-to-physician marketing in this study supports the assertion that neuroradiologist visits are an important element in establishing and maintaining a relationship with the referring clinician's office and thereby maximizing imaging referrals. © 2014 by American Journal of Neuroradiology.

A Student's Guide to Einstein's Major Papers

International Nuclear Information System (INIS)

Janssen, Michel

2013-01-01

in just 26 pages (not counting six pages of notes and references) covers everything from Copernicus, Galileo, Kepler and Newton to Maxwell and Lorentz to Einstein's early biography to a cardboard version of Popper versus Kuhn, is too superficial to be useful for such a course. To a lesser extent, this is also true for chapter 6, which compresses the development of quantum theory after Einstein's 1905 paper into 20 pages (plus seven pages of notes and references) and for chapter 7, a brief epilogue. However, this is not my main worry. One could easily supplement or even replace the bookends of the volume with other richer sources and use this volume mainly for its excellent detailed commentaries on some Einstein classics in the four chapters in between. My more serious reservation about the use of the volume as a whole in a history of physics course, ironically, comes from the exact same feature that made me whole-heartedly recommend its core chapters for physics courses. This is especially true for the chapters on special and general relativity. How useful is it for a student to go through, in as much detail as this volume provides, the Lorentz transformation of Maxwell's equations in vector form? I can see how a student in an E and M class (with a section on special relativity) might benefit from this exercise. The clumsiness of the calculations in vector form by Lorentz and Einstein could help a student encountering Maxwell's equations in tensor form for the first time appreciate the advantages of the latter formalism. Similarly, it would be useful for a student in a GR class to go through the basics of tensor calculus in the old-fashioned but not inelegant mathematical introduction of Einstein's 1916 review article on general relativity. This could reinforce mastery of material that a student in a GR class will have to learn anyway (though Einstein's presentation of the mathematics of both special and general relativity in The Meaning of Relativity would seem to

An Example Emphasizing Mass-Volume Relationships for Problem Solving in Soils

Science.gov (United States)

Heitman, J. L.; Vepraskas, M. J.

2009-01-01

Mass-volume relationships are a useful tool emphasized for problem solving in many geo-science and engineering applications. These relationships also have useful applications in soil science. Developing soils students' ability to utilize mass-volume relationships through schematic diagrams of soil phases (i.e., air, water, and solid) can help to…

New Danish reference values for spirometry

DEFF Research Database (Denmark)

Løkke, Anders; Marott, Jacob Louis; Mortensen, Jann

2013-01-01

years of age or older with adequate lung function. Results:  We used sex-stratified multiple linear regression analysis to find prediction formulas for forced expiratory volume in 1 s (FEV(1) ), forced vital capacity (FVC) and FEV(1) /FVC adjusted for age and height. The cutoff value of normal lung......Introduction:  International recommendations state that reference values for lung function should derive from cross-sectional studies of healthy nonsmokers and be renewed from time to time because of cohort effect and newer, more accurate, technical equipment. In 1986, the Danish Lung Society...

The backfilling and sealing of radioactive waste repositories. V. 1. Text - Reference - List of symbols

International Nuclear Information System (INIS)

1984-01-01

The report is in two volumes: Volume 1 contains the main text, the references and a list of symbols, and Volume 2, all the figues, tables and appendices. In Volume 1, backfilling and sealing is considered in relation to the geological, physical and chemical environments. There follows a detailed evaluation of the role and performance of the backfilling and sealing system in terms of thermal, hydraulic, chemical buffering, radionuclide retention, mechanical properties and behaviour as well as longevity. The results of the listing, screening and classification of a comprehensive range of candidate backfill materials are summarized. The different candidate materials are examined

Inside Student Government: The Variable Quality of High School Student Councils

Science.gov (United States)

McFarland, Daniel; Starmanns, Carlos E.

2009-01-01

Background/Context: Student governments are the first direct experience that youth have of representative government. However, very little research has been done on student councils in spite of their ubiquity in American high schools and consistent references to their positive effects on the political socialization of youth.…

Bibliography of Utah radioactive occurrences. Volume I

International Nuclear Information System (INIS)

Doelling, H.H.

1983-07-01

The references in this bibliography were assembled by reviewing published bibliographies of Utah geology, unpublished reports of the US Geological Survey and the Department of Energy, and various university theses. Each of the listings is cross-referenced by location and subject matter. This report is published in two volumes

Bibliography of Utah radioactive occurrences. Volume II

International Nuclear Information System (INIS)

Doelling, H.H.

1983-07-01

The references in this bibliography were assembled by reviewing published bibliographies of Utah geology, unpublished reports of the US Geological Survey and the Department of Energy, and various university theses. Each of the listings is cross-referenced by location and subject matter. This report is published in two volumes

Chat Transcript Analysis Reveals that Undergraduate Students are Open to Instruction, While Instructors and Librarians Care About Supporting Student Learning

Directory of Open Access Journals (Sweden)

Elaine Sullo

2017-03-01

Full Text Available A Review of: Jacoby, J., Ward, D., Avery, S., & Marcyk, E. (2016. The value of chat reference services: A pilot study. portal: Libraries and the Academy, 16(1, 109-129. https://doi.org/10.1353/pla.2016.0013 Objective – To investigate student, instructor, and librarian perspectives of chat reference service in the context of first-year undergraduate students conducting research for an introductory composition course. Design – Focus groups, individual interviews, and surveys. Setting – A large, public university in the United States of America. Subjects – 57 library reference providers, 36 instructors of an introductory composition course, and approximately 936 undergraduate students in certain sections of the introductory composition course who were assigned a specific research project. Methods – In spring of 2014, all participants were invited via email to respond to an anonymous chat transcript of a librarian interacting with a student working on his or her research project. Study participants could participate via a brief survey or by taking part in a focus group or individual interview. The invited instructors were asked to forward the invitation to the students in their sections, and reminder emails were sent two weeks after the initial email. Main Results – Nine instructors, 24 students, and 25 library reference providers participated in the study, representing a response rate of 25%, 3% (estimated, and 44%, respectively. The authors conducted a qualitative analysis of key themes that were derived from both the focus groups or individual interviews and the survey questions. The themes were: students as novice researchers, question negotiation, open and closed questions, instruction, speed and convenience, customer service, and referrals. The theme of “students as novice researchers” is based on student comments related to their frustrations of being inexperienced researchers, as well as librarian comments on strategies for

Editorial, Volume 5, Issue 1

Directory of Open Access Journals (Sweden)

Kristy L. Archuleta

2014-08-01

Full Text Available Welcome to Volume 5, Issue 1 of the Journal of Financial Therapy! In this issue, four scholarly papers are presented along with two profiles and a book review. These four papers address very important issues, such as mental health therapists’ competency in working with financial issues, financial stress of college students, parental messages about money, and financial advice media.

Evaluating college students’ displayed alcohol references on Facebook and Twitter

Science.gov (United States)

Moreno, Megan A.; Arseniev-Koehler, Alina; Litt, Dana; Christakis, Dimitri

2018-01-01

Purpose Current trends suggest adolescents and young adults typically maintain a social media “portfolio” of several sites including Facebook and Twitter, but little is known regarding how an individual chooses to display risk behaviors across these different sites. The purpose of this study was to investigate college students’ displayed alcohol references on both Facebook and Twitter. Methods Among a larger sample of college students from two universities, we identified participants who maintained both Facebook and Twitter profiles. Data collection included evaluation of 5 months of participants’ Facebook and Twitter posts for alcohol references, number of social connections (i.e. friends or followers) and number of posts. Phone interviews assessed participants’ frequency of Facebook and Twitter use and self-reported alcohol use. Analyses included Fisher’s exact test, Wilcoxon matched pair sign test, Freidman rank-sum tests and logistic regression. Results Of 112 eligible participants, 94 (RR=84.8%) completed the study. Participants were more likely to display alcohol references on Facebook compared to Twitter (76% versus 34%, p=0.02). Participants reported more social connections on Facebook versus Twitter (average 801.2 friends versus 189.4 followers, pTwitter (94.6% versus 50%, pTwitter displayed alcohol references, but mediators differed in each model. Discussion College students were more likely to display alcohol references on Facebook compared to Twitter. Understanding these patterns and predictors may inform prevention and intervention efforts directed at particular social media sites. PMID:26995291

Quantum volume hologram

International Nuclear Information System (INIS)

Vasilyev, Denis V.; Sokolov, Ivan V.; Polzik, Eugene S.

2010-01-01

We propose a scheme for parallel spatially multimode quantum memory for light. The scheme is based on a counterpropagating quantum signal wave and a strong classical reference wave as in a classical volume hologram and therefore can be called a quantum volume hologram. The medium for the hologram consists of a spatially extended ensemble of atoms placed in a magnetic field. The write-in and readout of this quantum hologram is as simple as that of its classical counterpart and consists of a single-pass illumination. In addition, we show that the present scheme for a quantum hologram is less sensitive to diffraction and therefore is capable of achieving a higher density of storage of spatial modes as compared to previous proposals. We present a feasibility study and show that experimental implementation is possible with available cold atomic samples. A quantum hologram capable of storing entangled images can become an important ingredient in quantum information processing and quantum imaging.

College Student Credit Card Usage and Debt.

Science.gov (United States)

Rybka, Kathryn M.

2001-01-01

Provides an overview of the concerns related to credit card usage by college students. Offers information student affairs professionals can use to help college students make responsible choices. (Contains 26 references.) (GCP)

A DDC Bibliography on Computers in Information Sciences. Volume II. Information Sciences Series.

Science.gov (United States)

Defense Documentation Center, Alexandria, VA.

The unclassified and unlimited bibliography compiles references dealing specifically with the role of computers in information sciences. The volume contains 239 annotated references grouped under three major headings: Artificial and Programming Languages, Computer Processing of Analog Data, and Computer Processing of Digital Data. The references…

WECC Variable Generation Planning Reference Book: Appendices

Energy Technology Data Exchange (ETDEWEB)

Makarov, Yuri V.; Du, Pengwei; Etingov, Pavel V.; Ma, Jian; Vyakaranam, Bharat

2013-05-13

The document titled “WECC Variable Generation Planning Reference Book”. This book is divided into two volumes; one is the main document (volume 1)and the other is appendices (volume 2). The main document is a collection of the best practices and the information regarding the application and impact of variables generation on power system planning. This volume (appendices) has additional information on the following topics: Probabilistic load flow problems. 2. Additional useful indices. 3. high-impact low-frequency (HILF) events. 4. Examples of wide-area nomograms. 5. Transmission line ratings, types of dynamic rating methods. 6. Relative costs per MW-km of different electric power transmission technologies. 7. Ultra-high voltage (UHV) transmission. 8.High voltage direct current (VSC-HVDC). 9. HVDC. 10. Rewiring of existing transmission lines. 11. High-temperature low sag (HTLS) conductors. 12. The direct method and energy functions for transient stability analysis in power systems. 13.Blackouts caused by voltage instability. 14. Algorithm for parameter continuation predictor-corrector methods. 15. Approximation techniques available for security regions. 16. Impacts of wind power on power system small signals stability. 17. FIDVR. 18. FACTS. 19. European planning standard and practices. 20. International experience in wind and solar energy sources. 21. Western Renewable Energy Zones (WREZ). 22. various energy storage technologies. 23. demand response. 24. BA consolidation and cooperation options. 25. generator power management requirements and 26. European planning guidelines.

Valores de referência e influência da idade no eritrograma de fêmeas bovinas da raça Aquitânica Reference values and age effect on the erythrogram of bovine females of the Aquitanian breed

Directory of Open Access Journals (Sweden)

R.F. Dias Junior

2006-06-01

Full Text Available Determinaram-se os valores de referência e estudou-se a influência da idade sobre o eritrograma em fêmeas bovinas da raça Aquitânica. Amostras de sangue de 80 fêmeas bovinas, acima de 12 meses de idade, e não reagentes ao antígeno do vírus da leucose dos bovinos, foram colhidas utilizando-se EDTA como anticoagulante para realização das seguintes provas: contagem global das hemácias, determinação do volume globular, concentração de hemoglobina, cálculo dos índices hematimétricos absolutos - volume corpuscular médio (VCM, hemoglobina corpuscular média (HCM e concentração de hemoglobina corpuscular média (CHCM. A idade exerceu influência significativa (PThe reference values and the influence of the age factor on the erytrogram in bovine females of the Aquitanian breed were evaluated. Blood samples of 80 healthy females, all tested negative for bovine leucose virus, were utilized for the analysis. Erythrocyte counts, determination of the packed cell volume, concentration of hemoglobin, calculation of hematimetric absolute rates of mean corpuscular volume (MCV, mean corpuscular hemoglobin (MCH and mean corpuscular hemoglobin concentration (MCHC were evaluated. Significant influence (P<0.05 of age was observed for most of the hematological characteristics, with decreased of the number of erythrocytes and increase of packed cell volume, quantity of hemoglobin, MCV, MCH. The reference values were: erythrocytes counting 6.68±0.58×10(6/mm³, packed cell volume 41.2±4.5%, hemoglobin 12.8±1.31g/dl, VCM 61.83±6.54fl, HCM 19.28±2.25pg, CHCM 31.4±2.3%.

Referent 3D tumor model at cellular level in radionuclide therapy

International Nuclear Information System (INIS)

Spaic, R.; Ilic, R.D.; Petrovic, B.J.

2002-01-01

Aim Conventional internal dosimetry has a lot of limitations because of tumor dose nonuniformity. The best approach for absorbed dose at cellular level for different tumors in radionuclide therapy calculation is Monte Carlo method. The purpose of this study is to introduce referent tumor 3D model at cellular level for Monte Carlo simulation study in radionuclide therapy. Material and Methods The moment when tumor is detectable and when same therapy can start is time period in which referent 3D tumor model at cellular level was defined. In accordance with tumor growth rate at that moment he was a sphere with same radius (10 000 μm). In that tumor there are cells or cluster of cells, which are randomly distributed spheres. Distribution of cells/cluster of cells can be calculated from histology data but it was assumed that this distribution is normal with the same mean value and standard deviation (100±50 mm). Second parameter, which was selected to define referent tumor, is volume density of cells (30%). In this referent tumor there are no necroses. Stroma is defined as space between spheres with same concentration of materials as in spheres. Results: Referent tumor defined on this way have about 2,2 10 5 cells or cluster of cells random distributed. Using this referent 3D tumor model and for same concentration of radionuclides (1:100) and energy of beta emitters (1000 keV) which are homogeneously distributed in labeled cells absorbed dose for all cells was calculated. Simulations are done using FOTELP Monte Carlo code, which is modified for this purposes. Results of absorbed dose in cells are given in numerical values (1D distribution) and as the images (2D or 3D distributions). Conclusion Geometrical module for Monte Carlo simulation study can be standardized by introducing referent 3D tumor model at cellular level. This referent 3D tumor model gives most realistic presentation of different tumors at the moment of their detectability. Referent 3D tumor model at

Reference standards to assess physical fitness of children and adolescents of Brazil: an approach to the students of the Lake Itaipú region—Brazil

Directory of Open Access Journals (Sweden)

Edilson Hobold

2017-11-01

Full Text Available Background The importance of assessing body fat variables and physical fitness tests plays an important role in monitoring the level of activity and physical fitness of the general population. The objective of this study was to develop reference norms to evaluate the physical fitness aptitudes of children and adolescents based on age and sex from the lake region of Itaipú, Brazil. Methods A descriptive cross-sectional study was carried out with 5,962 students (2,938 males and 3,024 females with an age range of 6.0 and 17.9 years. Weight (kg, height (cm, and triceps (mm, and sub-scapular skinfolds (mm were measured. Body Mass Index (BMI kg/m2 was calculated. To evaluate the four physical fitness aptitude dimensions (morphological, muscular strength, flexibility, and cardio-respiratory, the following physical education tests were given to the students: sit-and-reach (cm, push-ups (rep, standing long jump (cm, and 20-m shuttle run (m. Results and Discussion Females showed greater flexibility in the sit-and-reach test and greater body fat than the males. No differences were found in BMI. Percentiles were created for the four components for the physical fitness aptitudes, BMI, and skinfolds by using the LMS method based on age and sex. The proposed reference values may be used for detecting talents and promoting health in children and adolescents.

Measuring student engagement among elementary students: pilot of the Student Engagement Instrument--Elementary Version.

Science.gov (United States)

Carter, Chandra P; Reschly, Amy L; Lovelace, Matthew D; Appleton, James J; Thompson, Dianne

2012-06-01

Early school withdrawal, commonly referred to as dropout, is associated with a plethora of negative outcomes for students, schools, and society. Student engagement, however, presents as a promising theoretical model and cornerstone of school completion interventions. The purpose of the present study was to validate the Student Engagement Instrument-Elementary Version (SEI-E). The psychometric properties of this measure were assessed based on the responses of an ethnically diverse sample of 1,943 students from an urban locale. Exploratory and confirmatory factor analyses indicated that the 4-factor model of student engagement provided the best fit for the current data, which is divergent from previous SEI studies suggesting 5- and 6-factor models. Discussion and implications of these findings are presented in the context of student engagement and dropout prevention. (PsycINFO Database Record (c) 2012 APA, all rights reserved).

Memorial volume for Y. Nambu

CERN Document Server

Chang, Lay Nam; Han, Moo-Young; Phua, Kok Khoo

2016-01-01

We have lost one of the giants of the twentieth century physics when Yoichiro Nambu passed away in July, 2015, at the age of 94. Today's Standard Model, though still incomplete in many respects, is the culmination of the most successful theory of the Universe to date, and it is built upon foundations provided by discoveries made by Nambu in the 1960s: the mechanism of spontaneously broken symmetry in Nature (with G Jona-Lasinio) and the hidden new SU(3) symmetry of quarks and gluons (with M-Y Han). In this volume honoring Nambu's memory, World Scientific Publishing presents a unique collection of papers written by his former colleagues, collaborating researchers and former students and associates, not only citing Nambu's great contributions in physics but also many personal and private reminiscences, some never told before. This volume also contains the very last scientific writing by Professor Nambu himself, discussing the development of particle physics. This book is a volume for all who benefited not on...

INDUSTRIAL RADIOGRAPHY COURSE, INSTRUCTORS' GUIDE. VOLUME 2.

Science.gov (United States)

Texas A and M Univ., College Station. Engineering Extension Service.

INFORMATION RELATIVE TO THE LESSON PLANS IN "INDUSTRIAL RADIOGRAPHY COURSE, INSTRUCTOR'S GUIDE, VOLUME I" (VT 003 565) IS PRESENTED ON 52 INFORMATION SHEETS INCLUDING THE SUBJECTS SHIELDING EQUATIONS AND LOGARITHMS, METAL PROPERTIES, FIELD TRIP INSTRUCTIONS FOR STUDENTS, WELDING SYMBOLS AND SIZES, SAMPLE REPORT FORMS, AND TYPICAL SHIPPING…

Reference Values for Spirometry Derived Using Lambda, Mu, Sigma (LMS) Method in Korean Adults: in Comparison with Previous References.

Science.gov (United States)

Jo, Bum Seak; Myong, Jun Pyo; Rhee, Chin Kook; Yoon, Hyoung Kyu; Koo, Jung Wan; Kim, Hyoung Ryoul

2018-01-15

The present study aimed to update the prediction equations for spirometry and their lower limits of normal (LLN) by using the lambda, mu, sigma (LMS) method and to compare the outcomes with the values of previous spirometric reference equations. Spirometric data of 10,249 healthy non-smokers (8,776 females) were extracted from the fourth and fifth versions of the Korea National Health and Nutrition Examination Survey (KNHANES IV, 2007-2009; V, 2010-2012). Reference equations were derived using the LMS method which allows modeling skewness (lambda [L]), mean (mu [M]), and coefficient of variation (sigma [S]). The outcome equations were compared with previous reference values. Prediction equations were presented in the following form: predicted value = e{a + b × ln(height) + c × ln(age) + M - spline}. The new predicted values for spirometry and their LLN derived using the LMS method were shown to more accurately reflect transitions in pulmonary function in young adults than previous prediction equations derived using conventional regression analysis in 2013. There were partial discrepancies between the new reference values and the reference values from the Global Lung Function Initiative in 2012. The results should be interpreted with caution for young adults and elderly males, particularly in terms of the LLN for forced expiratory volume in one second/forced vital capacity in elderly males. Serial spirometry follow-up, together with correlations with other clinical findings, should be emphasized in evaluating the pulmonary function of individuals. Future studies are needed to improve the accuracy of reference data and to develop continuous reference values for spirometry across all ages. © 2018 The Korean Academy of Medical Sciences.

Ultrasound automated volume calculation in reproduction and in pregnancy.

Science.gov (United States)

Ata, Baris; Tulandi, Togas

2011-06-01

To review studies assessing the application of ultrasound automated volume calculation in reproductive medicine. We performed a literature search using the keywords "SonoAVC, sonography-based automated volume calculation, automated ultrasound, 3D ultrasound, antral follicle, follicle volume, follicle monitoring, follicle tracking, in vitro fertilization, controlled ovarian hyperstimulation, embryo volume, embryonic volume, gestational sac, and fetal volume" and conducted the search in PubMed, Medline, EMBASE, and the Cochrane Database of Systematic Reviews. Reference lists of identified reports were manually searched for other relevant publications. Automated volume measurements are in very good agreement with actual volumes of the assessed structures or with other validated measurement methods. The technique seems to provide reliable and highly reproducible results under a variety of conditions. Automated measurements take less time than manual measurements. Ultrasound automated volume calculation is a promising new technology which is already used in daily practice especially for assisted reproduction. Improvements to the technology will undoubtedly render it more effective and increase its use. Copyright © 2011 American Society for Reproductive Medicine. Published by Elsevier Inc. All rights reserved.

Accuracy of references and quotations in veterinary journals.

Science.gov (United States)

Hinchcliff, K W; Bruce, N J; Powers, J D; Kipp, M L

1993-02-01

The accuracy of references and quotations used to substantiate statements of fact in articles published in 6 frequently cited veterinary journals was examined. Three hundred references were randomly selected, and the accuracy of each citation was examined. A subset of 100 references was examined for quotational accuracy; ie, the accuracy with which authors represented the work or assertions of the author being cited. Of the 300 references selected, 295 were located, and 125 major errors were found in 88 (29.8%) of them. Sixty-seven (53.6%) major errors were found involving authors, 12 (9.6%) involved the article title, 14 (11.2%) involved the book or journal title, and 32 (25.6%) involved the volume number, date, or page numbers. Sixty-eight minor errors were detected. The accuracy of 111 quotations from 95 citations in 65 articles was examined. Nine quotations were technical and not classified, 86 (84.3%) were classified as correct, 2 (1.9%) contained minor misquotations, and 14 (13.7%) contained major misquotations. We concluded that misquotations and errors in citations occur frequently in veterinary journals, but at a rate similar to that reported for other biomedical journals.

[Normal macular thickness and volume using spectral domain optical coherence tomography in a reference population].

Science.gov (United States)

Solé González, L; Abreu González, R; Alonso Plasencia, M; Abreu Reyes, P

2013-09-01

To establish normal values of macular thickness and volume obtained by the Cirrus SD-OCT (Carl ZeissMeditec, Dublin, CA, U.S.A.). Secondly, to assess the association between macular thickness and volume, sex and age. A prospective study was conducted on patients who were seen in a hospital Retina Unit, and who only had retinal disease in one eye. All the Macular Cube 512 × 128 scan protocols were performed by the same operator. Only the healthy eye was scanned in each patient. A total of 100 eyes of 100 patients were analysed. The mean central foveal thickness was 261.31 ± 17.67 microns, and was significantly (P<.05) higher in males (267.74 ± 16.98 microns) than in females (255.60 ± 16.40 microns). The mean obtained for the volume of the cube was 10.09 ± 0.37mm 3, and the mean thickness of 280.33 ± 10.34 cube um, with no statistically significant differences between gender being found (P<.05). The mean macular thickness is less at central level, increases in the inner perifoveal ring, and then decreases in the outer perifoveal ring. Furthermore, of all quadrants the greatest thickness was the nasal (328.27 ± 12.96 microns), followed by the upper (326.27 ± 11.89 microns), lower (322.53 ± 12.37mm) sectors, with the temporal sector being the thinnest (313.35 ± 14.20 microns). The mean age of the patients was 60.86 ± 14 years. The mean central foveal thickness and the thickness of the inner perifoveal ring are significantly higher in men than in women. Both the mean volume and thickness of the cube, as well as nasal and inner superior sectors decrease with age, being significantly only in women. Copyright © 2012 Sociedad Española de Oftalmología. Published by Elsevier Espana. All rights reserved.

Twenty Strategies to Increase Student Motivation. Information Capsule. Volume 0907

Science.gov (United States)

Blazer, Christie

2010-01-01

Keeping students interested in school and motivating them to succeed are challenges that even the most experienced teachers face every year. A host of student variables can lead to low levels of motivation, but research indicates that educational settings also influence motivation levels. Some studies have found that motivation is a stronger…

Image registration with auto-mapped control volumes

International Nuclear Information System (INIS)

Schreibmann, Eduard; Xing Lei

2006-01-01

Many image registration algorithms rely on the use of homologous control points on the two input image sets to be registered. In reality, the interactive identification of the control points on both images is tedious, difficult, and often a source of error. We propose a two-step algorithm to automatically identify homologous regions that are used as a priori information during the image registration procedure. First, a number of small control volumes having distinct anatomical features are identified on the model image in a somewhat arbitrary fashion. Instead of attempting to find their correspondences in the reference image through user interaction, in the proposed method, each of the control regions is mapped to the corresponding part of the reference image by using an automated image registration algorithm. A normalized cross-correlation (NCC) function or mutual information was used as the auto-mapping metric and a limited memory Broyden-Fletcher-Goldfarb-Shanno algorithm (L-BFGS) was employed to optimize the function to find the optimal mapping. For rigid registration, the transformation parameters of the system are obtained by averaging that derived from the individual control volumes. In our deformable calculation, the mapped control volumes are treated as the nodes or control points with known positions on the two images. If the number of control volumes is not enough to cover the whole image to be registered, additional nodes are placed on the model image and then located on the reference image in a manner similar to the conventional BSpline deformable calculation. For deformable registration, the established correspondence by the auto-mapped control volumes provides valuable guidance for the registration calculation and greatly reduces the dimensionality of the problem. The performance of the two-step registrations was applied to three rigid registration cases (two PET-CT registrations and a brain MRI-CT registration) and one deformable registration of

Students to delve into physics at UCR

CERN Multimedia

2008-01-01

To turn up the volume on student interest in the sciences, San Jacinto High School physics teacher Mark Bonnard went global. His efforts resulted in allowing some students to head to UC Riverside in March to learn from physicists and interact with high school students from Portugal through an international master class.

Connection between encounter volume and diffusivity in geophysical flows

Science.gov (United States)

Rypina, Irina I.; Smith, Stefan G. Llewellyn; Pratt, Larry J.

2018-04-01

Trajectory encounter volume - the volume of fluid that passes close to a reference fluid parcel over some time interval - has been recently introduced as a measure of mixing potential of a flow. Diffusivity is the most commonly used characteristic of turbulent diffusion. We derive the analytical relationship between the encounter volume and diffusivity under the assumption of an isotropic random walk, i.e., diffusive motion, in one and two dimensions. We apply the derived formulas to produce maps of encounter volume and the corresponding diffusivity in the Gulf Stream region of the North Atlantic based on satellite altimetry, and discuss the mixing properties of Gulf Stream rings. Advantages offered by the derived formula for estimating diffusivity from oceanographic data are discussed, as well as applications to other disciplines.

Breadth versus volume: Neurology outpatient clinic cases in medical education.

Science.gov (United States)

Albert, Dara V; Blood, Angela D; Park, Yoon Soo; Brorson, James R; Lukas, Rimas V

2016-06-01

This study examined how volume in certain patient case types and breadth across patient case types in the outpatient clinic setting are related to Neurology Clerkship student performance. Case logs from the outpatient clinic experience of 486 students from The University of Chicago Pritzker School of Medicine, USA, participating in the 4week Neurology Clerkship from July 2008 to June 2013 were reviewed. A total of 12,381 patient encounters were logged and then classified into 13 diagnostic categories. How volume of cases within categories and the breadth of cases across categories relate to the National Board of Medical Examiners Clinical Subject Examination for Neurology and a Neurology Clerkship Objective Structured Clinical Examination was analyzed. Volume of cases was significantly correlated with the National Board of Medical Examiners Clinical Subject Examination for Neurology (r=.290, pNeurology (r=.231, p=.017), however was not significantly correlated with any component of the Objective Structured Clinical Examination. Volume of cases correlated with higher performance on measures of specialty knowledge and clinical skill. Fewer relationships emerged correlating breadth of cases and performance on the same measures. This study provides guidance to educators who must decide how much emphasis to place on volume versus breadth of cases in outpatient clinic learning experiences. Copyright © 2016 Elsevier Ltd. All rights reserved.

The analysis of subsidence associated with geothermal development. Volume 1. Handbook

Energy Technology Data Exchange (ETDEWEB)

Atherton, R.W.; Finnemore, E.J.; Gillam, M.L.

1976-09-01

This study evaluates the state of knowledge of subsidence associated with geothermal development, and provides preliminary methods to assess the potential of land subsidence for any specific geothermal site. The results of this study are presented in three volumes. Volume 1 is designed to serve as a concise reference, a handbook, for the evaluation of the potential for land subsidence from the development of geothermal resources.

Standardized assessment to enhance the diagnostic value of prostate volume; Part II: Correlation with prostate-specific antigen levels

NARCIS (Netherlands)

Aarnink, R. G.; de la Rosette, J. J.; Huynen, A. L.; Giesen, R. J.; Debruyne, F. M.; Wijkstra, H.

1996-01-01

Standardized estimations of prostate volumes are used for interpretation of prostate specific antigen (PSA) levels. In 243 patients with clinically benign diagnosis, automated and reference prostate volumes and transition zone volumes are correlated to PSA levels. Besides, growth curves of PSA level

Accuracy of cancellous bone volume fraction measured by micro-CT scanning

DEFF Research Database (Denmark)

Ding, Ming; Odgaard, A; Hvid, I

1999-01-01

Volume fraction, the single most important parameter in describing trabecular microstructure, can easily be calculated from three-dimensional reconstructions of micro-CT images. This study sought to quantify the accuracy of this measurement. One hundred and sixty human cancellous bone specimens...... which covered a large range of volume fraction (9.8-39.8%) were produced. The specimens were micro-CT scanned, and the volume fraction based on Archimedes' principle was determined as a reference. After scanning, all micro-CT data were segmented using individual thresholds determined by the scanner...

Official ERS technical standards: Global Lung Function Initiative reference values for the carbon monoxide transfer factor for Caucasians.

Science.gov (United States)

Stanojevic, Sanja; Graham, Brian L; Cooper, Brendan G; Thompson, Bruce R; Carter, Kim W; Francis, Richard W; Hall, Graham L

2017-09-01

There are numerous reference equations available for the single-breath transfer factor of the lung for carbon monoxide ( T  LCO ); however, it is not always clear which reference set should be used in clinical practice. The aim of the study was to develop the Global Lung Function Initiative (GLI) all-age reference values for T  LCO Data from 19 centres in 14 countries were collected to define T  LCO reference values. Similar to the GLI spirometry project, reference values were derived using the LMS (lambda, mu, sigma) method and the GAMLSS (generalised additive models for location, scale and shape) programme in R.12 660 T  LCO measurements from asymptomatic, lifetime nonsmokers were submitted; 85% of the submitted data were from Caucasians. All data were uncorrected for haemoglobin concentration. Following adjustments for elevation above sea level, gas concentration and assumptions used for calculating the anatomic dead space volume, there was a high degree of overlap between the datasets. Reference values for Caucasians aged 5-85 years were derived for T  LCO , transfer coefficient of the lung for carbon monoxide and alveolar volume.This is the largest collection of normative T  LCO data, and the first global reference values available for T  LCO . Copyright ©ERS 2017.

Sensors, Volume 4, Thermal Sensors

Science.gov (United States)

Scholz, Jorg; Ricolfi, Teresio

1996-12-01

'Sensors' is the first self-contained series to deal with the whole area of sensors. It describes general aspects, technical and physical fundamentals, construction, function, applications and developments of the various types of sensors. This volume describes the construction and applicational aspects of thermal sensors while presenting a rigorous treatment of the underlying physical principles. It provides a unique overview of the various categories of sensors as well as of specific groups, e.g. temperature sensors (resistance thermometers, thermocouples, and radiation thermometers), noise and acoustic thermometers, heat-flow and mass-flow sensors. Specific facettes of applications are presented by specialists from different fields including process control, automotive technology and cryogenics. This volume is an indispensable reference work and text book for both specialists and newcomers, researchers and developers.

Double-pass quantum volume hologram

International Nuclear Information System (INIS)

Vasilyev, Denis V.; Sokolov, Ivan V.

2011-01-01

We propose a scheme for parallel, spatially multimode quantum memory for light. The scheme is based on the propagation in different directions of a quantum signal wave and strong classical reference wave, like in a classical volume hologram and the previously proposed quantum volume hologram [D. V. Vasilyev et al., Phys. Rev. A 81, 020302(R) (2010)]. The medium for the hologram consists of a spatially extended ensemble of cold spin-polarized atoms. In the absence of the collective spin rotation during the interaction, two passes of light for both storage and retrieval are required, and therefore the present scheme can be called a double-pass quantum volume hologram. The scheme is less sensitive to diffraction and therefore is capable of achieving a higher density of storage of spatial modes as compared to the previously proposed thin quantum hologram [D. V. Vasilyev et al., Phys. Rev. A 77, 020302(R) (2008)], which also requires two passes of light for both storage and retrieval. However, the present scheme allows one to achieve a good memory performance with a lower optical depth of the atomic sample as compared to the quantum volume hologram. A quantum hologram capable of storing entangled images can become an important ingredient in quantum information processing and quantum imaging.

String Theory Volume 1: An Introduction to the Bosonic String and Volume 2: Superstring Theory and Beyond

Energy Technology Data Exchange (ETDEWEB)

Carlip, S [Department of Physics, University of California, Davis, CA 95616 (United States)

2006-10-21

The early 1980s, when I first learned theory, were desperate times for graduate students. We searched frantically for coherent introductions, passing tattered copies of review articles around like samizdat, struggling over obscure references to ancient models of strong interactions, and flocking to lectures-not least those by Joe Polchinski-that promised to really explain what was going on. If only this book had been around, it would have saved much grief. Volume I, The Bosonic String, offers a clear and well organized introduction to bosonic string theory. Topics range from the 'classical' (spectra, vertex operators, consistency conditions, etc.) to the 'modern' (D-branes first appear in an exercise at the end of chapter 1, noncommutative geometry shows up in chapter 8). Polchinski does not hesitate to discuss sophisticated matters-path integral measures, BRST symmetries, etc.-but his approach is pedagogical, and his writing is lucid, if sometimes a bit terse. Chapters end with problems that are sometimes difficult but never impossible. A very useful annotated bibliography directs readers to resources for further study, and a nearly 30-page glossary provides short but clear definitions of key terms. There is much here that will appeal to relativists. Polchinski uses the covariant Polyakov path integral approach to quantization from early on; he clearly distinguishes Weyl invariance from conformal invariance; he is appropriately careful about using complex coordinates on topologically nontrivial manifolds; he keeps the string world sheet metric explicit at the start instead of immediately hiding it by a gauge choice. Volume II includes an elegant introduction to anticommuting coordinates and superconformal transformations. A few conventions may cause confusion-%, Polchinski's stress-energy tensor, for instance, differs from the standard general relativistic definition by a factor of -2{pi}, and while this is briefly mentioned in the text

Guidelines for the verification and validation of expert system software and conventional software: Bibliography. Volume 8

International Nuclear Information System (INIS)

Miller, L.A.; Hayes, J.E.; Mirsky, S.M.

1995-03-01

This volume contains all of the technical references found in Volumes 1-7 concerning the development of guidelines for the verification and validation of expert systems, knowledge-based systems, other AI systems, object-oriented systems, and conventional systems

Guidelines for the verification and validation of expert system software and conventional software: Bibliography. Volume 8

Energy Technology Data Exchange (ETDEWEB)

Miller, L.A.; Hayes, J.E.; Mirsky, S.M. [Science Applications International Corp., McLean, VA (United States)

1995-03-01

This volume contains all of the technical references found in Volumes 1-7 concerning the development of guidelines for the verification and validation of expert systems, knowledge-based systems, other AI systems, object-oriented systems, and conventional systems.

Teaching Reference Skills: Does it really Matter?

Directory of Open Access Journals (Sweden)

Monika Kavalir

2010-05-01

Full Text Available The article discusses the results of a study at the core of which is the question of whether teaching reference skills really matters – i.e. how useful it is to train students to work with dictionaries. To answer this query, two issues are investigated: firstly, how effective the particular methodology developed here is with regard to using thesauri; and secondly, whether it makes a difference if some specific hands-on exercises are included or excluded. By the end of the project, the students felt that thesauri, a previously unknown language tool, would be quite useful for their work in the future; on average, they were planning to use a thesaurus several times a month. The analysis of the student questionnaires and a comparison of lexical variation in the first and second drafts of the essays also showed that the experimental group, which received more practical training, generally found thesauri more useful and, accordingly, used them more than the control group did.

Student Problems with Documentation.

Science.gov (United States)

Freimer, Gloria R.; Perry, Margaret M.

1986-01-01

Interviews with faculty, a survey of 20 students, and examination of style manuals revealed that students are confused by inconsistencies in and multiplicity of styles when confronted with writing and documenting a research paper. Librarians are urged to teach various citation formats and work for adoption of standardization. (17 references) (EJS)

Technical Reports (Part I). End of Project Report, 1968-1971, Volume III.

Science.gov (United States)

Western Nevada Regional Education Center, Lovelock.

The pamphlets included in this volume are technical reports prepared as outgrowths of the Student Information Systems of the Western Nevada Regional Education Center (WN-REC) funded by a Title III (Elementary and Secondary Education Act) grant. These reports describe methods of interpreting the printouts from the Student Information System;…

Reference materials for nondestructive assay of special nuclear material. Volume 1. Uranium oxide plus graphite powder

International Nuclear Information System (INIS)

Sprinkle, J.K.; Likes, R.N.; Parker, J.L.; Smith, H.A.

1983-10-01

This manual describes the fabrication of reference materials for use in gamma-ray-based nondestructive assay of low-density uranium-bearing samples. The sample containers are 2-l bottles. The reference materials consist of small amounts of UO 2 spread throughout a graphite matrix. The 235 U content ranges from 0 to 100 g. The manual also describes the far-field assay procedure used with low-resolution detectors

Chat reference service in medical libraries: part 2--Trends in medical school libraries.

Science.gov (United States)

Dee, Cheryl R

2003-01-01

An increasing number of medical school libraries offer chat service to provide immediate, high quality information at the time and point of need to students, faculty, staff, and health care professionals. Part 2 of Chat Reference Service in Medical Libraries presents a snapshot of the current trends in chat reference service in medical school libraries. In late 2002, 25 (21%) medical school libraries provided chat reference. Trends in chat reference services in medical school libraries were compiled from an exploration of medical school library Web sites and informal correspondence from medical school library personnel. Many medical libraries are actively investigating and planning new chat reference services, while others have decided not to pursue chat reference at this time. Anecdotal comments from medical school library staff provide insights into chat reference service.

NWTS conceptual reference repository description (CRRD). Volume III. Criteria, bases, special studies, and codes

International Nuclear Information System (INIS)

1981-05-01

This volume documents the criteria, design bases, and special studies and provides the backup for the design presented in Volume II. The criteria presented here were developed by ONWI as a draft version for consideration in this conceptual report. Since these criteria were developed subsequent to preparation of the reports used as a basis for the CRRD, not all of the criteria could be fully considered in preparation of the CRRD. However, they were used as guidelines wherever possible. The criteria for terminal storage of waste are still in development. The chapter on the design bases identifies the important design considerations and provides the justification for their selection. The design bases were developed not so much to give exact values for parameters as to identify the parameters that are significant to the design. They also serve as a common basis for coordinating analysis and design studies unitl the next design phase is completed. Some of the design bases presented here were taken directly from the Stearns-Roger NWTS-R1 Conceptual Design Report. The special studies document technical aspects of the design that are of particular importance or that furnish additional information pertaining to the design

A short introduction to cytogenetic studies in mammals with reference to the present volume.

Science.gov (United States)

Graphodatsky, A; Ferguson-Smith, M A; Stanyon, R

2012-01-01

Genome diversity has long been studied from the comparative cytogenetic perspective. Early workers documented differences between species in diploid chromosome number and fundamental number. Banding methods allowed more detailed descriptions of between-species rearrangements and classes of differentially staining chromosome material. The infusion of molecular methods into cytogenetics provided a third revolution, which is still not exhausted. Chromosome painting has provided a global view of the translocation history of mammalian genome evolution, well summarized in the contributions to this special volume. More recently, FISH of cloned DNA has provided details on defining breakpoint and intrachromosomal marker order, which have helped to document inversions and centromere repositioning. The most recent trend in comparative molecular cytogenetics is to integrate sequencing information in order to formulate and test reconstructions of ancestral genomes and phylogenomic hypotheses derived from comparative cytogenetics. The integration of comparative cytogenetics and sequencing promises to provide an understanding of what drives chromosome rearrangements and genome evolution in general. We believe that the contributions in this volume, in no small way, point the way to the next phase in cytogenetic studies. Copyright © 2012 S. Karger AG, Basel.

Technical summary of Groundwater Quality Protection Program at Savannah River Plant. Volume II. Radioactive waste

International Nuclear Information System (INIS)

Stone, J.A.; Christensen, E.J.

1983-12-01

This report (Volume II) presents representative monitoring data for radioactivity in groundwater at SRP. Four major groups of radioactive waste disposal sites and three minor sites are described. Much of the geohydrological and and other background information given in Volume I is applicable to these sites and is incorporated by reference. Several of the sites that contain mixed chemical and radioactive wastes are discussed in both Volumes I and II. Bulk unirradiated uranium is considered primarily a chemical waste which is addressed in Volume I, but generally not in Volume II

The Impact of Social Media on College Students

Science.gov (United States)

Mastrodicasa, Jeanna; Metellus, Paul

2013-01-01

There are numerous ways, positive and negative, in which social media impact college students. Understanding sheer volume of time and the type of activities for which college students use social networking sites is crucial for higher education administrators. Researchers have begun to empirically examine impacts on students' well-being and have…

Shock wave science and technology reference library

CERN Document Server

2009-01-01

This book, as a volume of the Shock Wave Science and Technology Reference Library, is primarily concerned with detonation waves or compression shock waves in reactive heterogeneous media, including mixtures of solid, liquid and gas phases. The topics involve a variety of energy release and control processes in such media - a contemporary research field that has found wide applications in propulsion and power, hazard prevention as well as military engineering. The six extensive chapters contained in this volume are: - Spray Detonation (SB Murray and PA Thibault) - Detonation of Gas-Particle Flow (F Zhang) - Slurry Detonation (DL Frost and F Zhang) - Detonation of Metalized Composite Explosives (MF Gogulya and MA Brazhnikov) - Shock-Induced Solid-Solid Reactions and Detonations (YA Gordopolov, SS Batsanov, and VS Trofimov) - Shock Ignition of Particles (SM Frolov and AV Fedorov) Each chapter is self-contained and can be read independently of the others, though, they are thematically interrelated. They offer a t...

Validating automated kidney stone volumetry in computed tomography and mathematical correlation with estimated stone volume based on diameter.

Science.gov (United States)

Wilhelm, Konrad; Miernik, Arkadiusz; Hein, Simon; Schlager, Daniel; Adams, Fabian; Benndorf, Matthias; Fritz, Benjamin; Langer, Mathias; Hesse, Albrecht; Schoenthaler, Martin; Neubauer, Jakob

2018-06-02

To validate AutoMated UroLithiasis Evaluation Tool (AMULET) software for kidney stone volumetry and compare its performance to standard clinical practice. Maximum diameter and volume of 96 urinary stones were measured as reference standard by three independent urologists. The same stones were positioned in an anthropomorphic phantom and CT scans acquired in standard settings. Three independent radiologists blinded to the reference values took manual measurements of the maximum diameter and automatic measurements of maximum diameter and volume. An "expected volume" was calculated based on manual diameter measurements using the formula: V=4/3 πr³. 96 stones were analyzed in the study. We had initially aimed to assess 100. Nine were replaced during data acquisition due of crumbling and 4 had to be excluded because the automated measurement did not work. Mean reference maximum diameter was 13.3 mm (5.2-32.1 mm). Correlation coefficients among all measured outcomes were compared. The correlation between the manual and automatic diameter measurements to the reference was 0.98 and 0.91, respectively (pvolumetry is possible and significantly more accurate than diameter-based volumetric calculations. To avoid bias in clinical trials, size should be measured as volume. However, automated diameter measurements are not as accurate as manual measurements.

The Implications of Library Anxiety for Academic Reference Services: A Review of the Literature

Science.gov (United States)

Carlile, Heather

2007-01-01

Academic reference librarians continually observe that many students are embarrassed about not knowing how to use the library and are reluctant to approach the reference desk. The theory of library anxiety offers an explanation, proposing that a fear of being in and using libraries serves as a psychological barrier, hindering many university…

Technology, safety and costs of decommissioning a reference boiling water reactor power station. Appendices. Volume 2

Energy Technology Data Exchange (ETDEWEB)

Oak, H.D.; Holter, G.M.; Kennedy, W.E. Jr.; Konzek, G.J.

1980-06-01

Appendices are presented concerning the evaluations of decommissioning financing alternatives; reference site description; reference BWR facility description; radiation dose rate and concrete surface contamination data; radionuclide inventories; public radiation dose models and calculated maximum annual doses; decommissioning methods; generic decommissioning information; immediate dismantlement details; passive safe storage, continuing care, and deferred dismantlement details; entombment details; demolition and site restoration details; cost estimating bases; public radiological safety assessment details; and details of alternate study bases.

HEAD CIRCUMFERENCE REFERENCES FOR SCHOOL AGE CHILDREN IN WESTERN ROMANIA.

Science.gov (United States)

Chirita-Emandi, Adela; Doros, Gabriela; Simina, Iulia Jurca; Gafencu, Mihai; Puiu, Maria

2015-01-01

To provide head circumference references for school-aged children in western Romania, and compare them with references from other European countries. A total of 2742 children, aged 6-19 years, from Timis county, were examined by medical students, between February 2010-June 2011. Head circumference references were constructed by Cole's LMS method with LMSChartMaker software. The Romanian 3rd, 50th and 97th percentiles for head circumference were compared with recent references from Belgium and Germany. Generally, boys show significantly larger head circumference compared to girls at any age. The head circumference increments between 6 and 19 years are Romania to those from Germany and Belgium, we found lower median head circumference in Romanian boys and girls, that could be explained by a taller stature of boys and girls in Germany and Belgium compared to Romania.

Modeling the economics of LLW volume reduction

International Nuclear Information System (INIS)

Voth, M.H.; Witzig, W.F.

1986-01-01

Generators of low-level (radioactive) waste (LLW) are under pressure to implement volume reduction (VR) programs for political and economic reasons. Political reasons include the appearance of generating less waste or meeting quotas. Economic reasons include avoiding high disposal costs and associated surcharges. Volume reduction results in less total volume over which fixed disposal costs are allocated and therefore higher unit costs for disposal. As numerous small compacts are developed, this often overlooked effect becomes more pronounced. The described model presents two unique significant features. First, a feedback loop considers the impact of VR on disposal rates, and second, it appeals to logic without extensive knowledge of VR technology or computer modeling. The latter feature is especially useful in conveying information to students and nontechnical decision makers, demonstrating the impact of each of a complicated set of variables with reproducible results

Waste minimization handbook, Volume 1

Energy Technology Data Exchange (ETDEWEB)

Boing, L.E.; Coffey, M.J.

1995-12-01

This technical guide presents various methods used by industry to minimize low-level radioactive waste (LLW) generated during decommissioning and decontamination (D and D) activities. Such activities generate significant amounts of LLW during their operations. Waste minimization refers to any measure, procedure, or technique that reduces the amount of waste generated during a specific operation or project. Preventive waste minimization techniques implemented when a project is initiated can significantly reduce waste. Techniques implemented during decontamination activities reduce the cost of decommissioning. The application of waste minimization techniques is not limited to D and D activities; it is also useful during any phase of a facility`s life cycle. This compendium will be supplemented with a second volume of abstracts of hundreds of papers related to minimizing low-level nuclear waste. This second volume is expected to be released in late 1996.

Waste minimization handbook, Volume 1

International Nuclear Information System (INIS)

Boing, L.E.; Coffey, M.J.

1995-12-01

This technical guide presents various methods used by industry to minimize low-level radioactive waste (LLW) generated during decommissioning and decontamination (D and D) activities. Such activities generate significant amounts of LLW during their operations. Waste minimization refers to any measure, procedure, or technique that reduces the amount of waste generated during a specific operation or project. Preventive waste minimization techniques implemented when a project is initiated can significantly reduce waste. Techniques implemented during decontamination activities reduce the cost of decommissioning. The application of waste minimization techniques is not limited to D and D activities; it is also useful during any phase of a facility's life cycle. This compendium will be supplemented with a second volume of abstracts of hundreds of papers related to minimizing low-level nuclear waste. This second volume is expected to be released in late 1996

Determination of saturation pressure and enthalpy of vaporization of semi-volatile aerosols: the integrated volume mentod

Science.gov (United States)

This study presents the integrated volume method for estimating saturation pressure and enthalpy of vaporization of a whole aerosol distribution. We measure the change of total volume of an aerosol distribution between a reference state and several heated states, with the heating...

Pathology-based validation of FDG PET segmentation tools for volume assessment of lymph node metastases from head and neck cancer

Energy Technology Data Exchange (ETDEWEB)

Schinagl, Dominic A.X. [Radboud University Nijmegen Medical Centre, Department of Radiation Oncology, Nijmegen (Netherlands); Radboud University Nijmegen Medical Centre, Department of Radiation Oncology (874), P.O. Box 9101, Nijmegen (Netherlands); Span, Paul N.; Kaanders, Johannes H.A.M. [Radboud University Nijmegen Medical Centre, Department of Radiation Oncology, Nijmegen (Netherlands); Hoogen, Frank J.A. van den [Radboud University Nijmegen Medical Centre, Department of Otorhinolaryngology, Head and Neck Surgery, Nijmegen (Netherlands); Merkx, Matthias A.W. [Radboud University Nijmegen Medical Centre, Department of Oral and Maxillofacial Surgery, Nijmegen (Netherlands); Slootweg, Piet J. [Radboud University Nijmegen Medical Centre, Department of Pathology, Nijmegen (Netherlands); Oyen, Wim J.G. [Radboud University Nijmegen Medical Centre, Department of Nuclear Medicine, Nijmegen (Netherlands)

2013-12-15

FDG PET is increasingly incorporated into radiation treatment planning of head and neck cancer. However, there are only limited data on the accuracy of radiotherapy target volume delineation by FDG PET. The purpose of this study was to validate FDG PET segmentation tools for volume assessment of lymph node metastases from head and neck cancer against the pathological method as the standard. Twelve patients with head and neck cancer and 28 metastatic lymph nodes eligible for therapeutic neck dissection underwent preoperative FDG PET/CT. The metastatic lymph nodes were delineated on CT (Node{sub CT}) and ten PET segmentation tools were used to assess FDG PET-based nodal volumes: interpreting FDG PET visually (PET{sub VIS}), applying an isocontour at a standardized uptake value (SUV) of 2.5 (PET{sub SUV}), two segmentation tools with a fixed threshold of 40 % and 50 %, and two adaptive threshold based methods. The latter four tools were applied with the primary tumour as reference and also with the lymph node itself as reference. Nodal volumes were compared with the true volume as determined by pathological examination. Both Node{sub CT} and PET{sub VIS} showed good correlations with the pathological volume. PET segmentation tools using the metastatic node as reference all performed well but not better than PET{sub VIS}. The tools using the primary tumour as reference correlated poorly with pathology. PET{sub SUV} was unsatisfactory in 35 % of the patients due to merging of the contours of adjacent nodes. FDG PET accurately estimates metastatic lymph node volume, but beyond the detection of lymph node metastases (staging), it has no added value over CT alone for the delineation of routine radiotherapy target volumes. If FDG PET is used in radiotherapy planning, treatment adaptation or response assessment, we recommend an automated segmentation method for purposes of reproducibility and interinstitutional comparison. (orig.)

Fuzzy Control of Tidal volume, Respiration number and Pressure value

OpenAIRE

Hasan Guler; Fikret Ata

2010-01-01

In this study, control of tidal volume, respiration number and pressure value which are arrived to patient at mechanical ventilator device which is used in intensive care units were performed with fuzzy logic controller. The aim of this system is to reduce workload of aneshesiologist. By calculating tidal volume, respiration number and pressure value, the error Pe(k) between reference pressure value (Pref) and pressure of gas given ill person (Phasta) and error change rate ;#948;Pe(k) were co...

Internal-reference solid-electrolyte oxygen sensor

International Nuclear Information System (INIS)

Haaland, D.M.

1977-01-01

A new solid-electrolyte oxygen sensor has been developed that eliminates the conventional oxygen reference in previous solid-electrolyte oxygen sensor designs and is, therefore, ideally suited as an insertion device for remote oxygen monitoring applications. It is constructed with two cells of stabilized zirconia sealed into a small unit using a new high-temperature platinum-zirconia seal. One electrochemical cell monitors the ratio of oxygen partial pressures inside and outside the sensor while the other solid-electrolyte cell is used for quantitative electrochemical pumping of oxygen. The internal oxygen reference is generated by initially pumping all oxygen out of the known internal volume of the sensor and then quantitatively pumping oxygen back in until oxygen partial pressures are equal inside and out. This information is used with the ideal gas law to calculate oxygen partial pressures. Tests were conducted from 400 to 1000 0 C in mixtures of oxygen and nitrogen spanning approximately 0.2 to 21 percent oxygen concentration range. Sensors with sputtered platinum and porous platinum paste electrodes were compared

Breckinridge Project, initial effort. Report XI, Volume V. Critical review of the design basis. [Critical review

Energy Technology Data Exchange (ETDEWEB)

None

1982-01-01

Report XI, Technical Audit, is a compendium of research material used during the Initial Effort in making engineering comparisons and decisions. Volumes 4 and 5 of Report XI present those studies which provide a Critical Review of the Design Basis. The Critical Review Report, prepared by Intercontinental Econergy Associates, Inc., summarizes findings from an extensive review of the data base for the H-Coal process design. Volume 4 presents this review and assessment, and includes supporting material; specifically, Design Data Tabulation (Appendix A), Process Flow Sheets (Appendix B), and References (Appendix C). Volume 5 is a continuation of the references of Appendix C. Studies of a proprietary nature are noted and referenced, but are not included in these volumes. They are included in the Limited Access versions of these reports and may be reviewed by properly cleared personnel in the offices of Ashland Synthetic Fuels, Inc.

PEMANFAATAN REFERENCE MANAGEMENT SOFTWARE (RMS UNTUK PENYUSUNAN KARYA ILMIAH DI PERGURUAN TINGGI

Directory of Open Access Journals (Sweden)

mufid mufid

2014-07-01

Full Text Available Reference management software (RMS is useful application for  researchers,  lecturers  and  students  helping  them  to  compose scientifc paper. This software has  fuctioned to search online scientifc information, to save search results, and to write bibliography, includes making  citation  and  references  automatically,  to  facilitate  to  share references  with  other  users  and  to  sincron  references  web  based  on desktop or mobile phone.This  article  tries  to  introduce  RMS. Using  RMS,  error  on  writing citation  and  references  can  be  avoided,  publishing  of  scientifc works would be increased and more qualifed.

The Bases of Chemical Thermodynamics, Volumes 1 and 2 by Michael Graetzel and Pierre Infelta

Science.gov (United States)

van Hecke, Gerald R.

2001-09-01

Universal Publishers: Parkland, FL, 2000. Vol. 1: 298 pp. ISBN 1-58112-772-3. 25.95. Vol. 2: 300 pp. ISBN 1-58112-771-5. 25.95. Rarely does one pick up a text and find in it so many of one's favorite pedagogical devices. Graetzel and Infelta was a treat to read. The text offers many new and clever derivations of the well-worn equations of chemical thermodynamics and for this reason alone the text should be on the bookshelf of every serious teacher of thermodynamics. The writing is easy to read: not terse, but carefully worded as a thermodynamics text should be. There are no fancy sidebars or tidbits, just a straightforward presentation of material that is frankly refreshing. A brief description of the text should come next, for it consist of two volumes. You find in Volume 1 introductory material, the laws of thermodynamics, auxiliary functions, molar and partial molar quantities, gases, and component phase equilibria; in Volume 2, the energetics of chemical reactions, chemical equilibria, properties of ideal and nonideal mixtures, and an introduction to statistical mechanics. The authors make careful definitions of those slippery concepts, systems, states, and extensive and intensive variables, and use those definitions to show how the thermodynamic state of a system can be described in a minimum number of variables. A pedagogical feature that makes a hit with me is the authors' disuse of deltas. They explicitly write Ufinal - Uinitial instead of just good old DU, which really tells a reader nothing. How much better our students would understand thermodynamics if we were to ban D 's remains to be seen. The authors are consistent in their disuse of D 's except for standard expressions such as DrG°. Entropy, every beginning student's random nightmare, is introduced by the concept of arrangements available to the system. The number of arrangements can be quantified by various permutation formulas. Thank the authors for sticking with arrangements that can be

String Theory Volume 1: An Introduction to the Bosonic String and Volume 2: Superstring Theory and Beyond

International Nuclear Information System (INIS)

Carlip, S

2006-01-01

The early 1980s, when I first learned theory, were desperate times for graduate students. We searched frantically for coherent introductions, passing tattered copies of review articles around like samizdat, struggling over obscure references to ancient models of strong interactions, and flocking to lectures-not least those by Joe Polchinski-that promised to really explain what was going on. If only this book had been around, it would have saved much grief. Volume I, The Bosonic String, offers a clear and well organized introduction to bosonic string theory. Topics range from the 'classical' (spectra, vertex operators, consistency conditions, etc.) to the 'modern' (D-branes first appear in an exercise at the end of chapter 1, noncommutative geometry shows up in chapter 8). Polchinski does not hesitate to discuss sophisticated matters-path integral measures, BRST symmetries, etc.-but his approach is pedagogical, and his writing is lucid, if sometimes a bit terse. Chapters end with problems that are sometimes difficult but never impossible. A very useful annotated bibliography directs readers to resources for further study, and a nearly 30-page glossary provides short but clear definitions of key terms. There is much here that will appeal to relativists. Polchinski uses the covariant Polyakov path integral approach to quantization from early on; he clearly distinguishes Weyl invariance from conformal invariance; he is appropriately careful about using complex coordinates on topologically nontrivial manifolds; he keeps the string world sheet metric explicit at the start instead of immediately hiding it by a gauge choice. Volume II includes an elegant introduction to anticommuting coordinates and superconformal transformations. A few conventions may cause confusion-%, Polchinski's stress-energy tensor, for instance, differs from the standard general relativistic definition by a factor of -2π, and while this is briefly mentioned in the text, it could easily be missed

Institutional Liability for Student Activities and Organizations.

Science.gov (United States)

Richmond, Douglas R.

1990-01-01

Examines higher education institutional liability in the following areas: (1) in tort, based on negligence, for physical harm to students; (2) in tort, for defamation flowing from student media; and (3) in contract, arising out of student organizations' business relationships with third parties. (222 references) (MLF)

Low Volume, Funding, Staffing and Technical Problems are Key Reasons for Discontinuation of Chat Reference Services. A review of: Radford, Marie L., and M. Kathleen Kern. “A Multiple‐case Study Investigation of the Discontinuation of Nine Chat Reference Services.” Library & Information Science Research 28.4 (Sept. 2006: 521‐47.

Directory of Open Access Journals (Sweden)

Stephanie R. Walker

2007-09-01

Full Text Available Objective – To investigate the reasons behind the cessation of 9 virtual (chat reference services.Design – Multiple case‐study investigationSetting – Academic, public, and special libraries in the United States.Subjects – Five academic libraries, 1 public library, and 3 library consortia.Methods – The initial method used to identify discontinued chat reference services was via a posting to DIG_REF, the digitalreference services listserv. From this initial posting, librarians on the list also suggested other cases, for a total of 7. Two cases later came to the authors’ attention and were added. The 9 cases included academic libraries, a public library, and consortia who used tools provided by four major software vendors, giving a good cross‐section of the types of libraries participating in VR and the major software packages available at the time. A contact person for each discontinued service was invited to participate. The participants were geographically scattered, so data were collected via e‐mail questionnaires, telephone interviews, and examination of available documents describing the services, audiences, demographics, operations, and any decision‐making processes either for starting or discontinuing the service. The authors then compared and contrasted results obtained from the 9 services. The authors analysed reasons for discontinuation of services, the decision making processes, volume of questions, service hours, marketing, evaluation, and whether the service might be restarted atsome time in the future.Main Results – Although the VR services discussed were being delivered by diverse organizations, some commonalities emerged. All 9 services used existing staff and added chat reference to their duties. In all but one case, the hours of service offered when VRbegan were within the hours that the libraries were already open to the public. In the exception (Case E, there were hours of service after the libraries were

Novos valores de referência para espirometria forçada em brasileiros adultos de raça branca New reference values for forced spirometry in white adults in Brazil

Directory of Open Access Journals (Sweden)

Carlos Alberto de Castro Pereira

2007-08-01

Full Text Available OBJETIVO: Descrever novas equações de referência para a espirometria em adultos brasileiros saudáveis que nunca fumaram, e comparar os valores previstos atuais com os valores derivados em 1992. MÉTODOS: Equações e limites de referência foram derivados em 270 homens e 373 mulheres, habitantes de oito cidades brasileiras, por espirômetro. A idade variou de 20 a 85 anos nas mulheres e 26 a 86 anos nos homens. Os exames seguiram as normas recomendadas pela Sociedade Brasileira de Pneumologia e Tisiologia. Os limites inferiores foram derivados pela análise do 5º percentil dos resíduos. RESULTADOS: Os valores previstos para capacidade vital forçada (CVF, volume expiratório forçado no primeiro segundo (VEF1 e para as relações VEF1/CVF e VEF1/volume expiratório forçado nos primeiros seis segundos (VEF6 se ajustaram melhor em regressões lineares. Os fluxos ajustaram-se melhor em equações logarítmicas. Em ambos os sexos, maiores estaturas resultaram em menores valores para as relações VEF1/CVF, VEF1/VEF6 e fluxos/CVF. Os valores de referência do VEF1 e da CVF, no presente estudo, foram maiores do que aqueles derivados para adultos brasileiros em 1992. CONCLUSÃO: Novos valores previstos para a espirometria forçada foram obtidos em uma amostra da população brasileira de raça branca. Os valores são maiores do que os obtidos em 1992, provavelmente em decorrência de fatores técnicos.OBJECTIVE: To describe spirometric reference equations for healthy Brazilian adults who have never smoked and to compare the predicted values with those derived in 1992. METHODS: Reference equations for spirometry were derived in 270 men and 373 women living in eight cities in Brazil. Ages ranged from 20 to 85 years in women and from 26 to 86 years in men. Spirometry examinations followed the recommendations of the Brazilian Thoracic Society. Lower limits were derived by the analysis of the fifth percentiles of the residuals. RESULTS: Forced vital

Eigenmode multiplexing with SLM for volume holographic data storage

Science.gov (United States)

Chen, Guanghao; Miller, Bo E.; Takashima, Yuzuru

2017-08-01

The cavity supports the orthogonal reference beam families as its eigenmodes while enhancing the reference beam power. Such orthogonal eigenmodes are used as additional degree of freedom to multiplex data pages, consequently increase storage densities for volume Holographic Data Storage Systems (HDSS) when the maximum number of multiplexed data page is limited by geometrical factor. Image bearing holograms are multiplexed by orthogonal phase code multiplexing via Hermite-Gaussian eigenmodes in a Fe:LiNbO3 medium with a 532 nm laser at multiple Bragg angles by using Liquid Crystal on Silicon (LCOS) spatial light modulators (SLMs) in reference arms. Total of nine holograms are recorded with three angular and three eigenmode.

Shock Wave Science and Technology Reference Library

CERN Document Server

2007-01-01

Shock waves in multiphase flows refers to a rich variety of phenomena of interest to physicists, chemists, and fluid dynamicists, as well as mechanical, biomedical and aeronautical engineers. This volume treats shock and expansion waves in (bullet) complex, bubbly liquids (L van Wijngaarden, Y Tomita, V Kedrinskii) and (bullet) cryogenic liquids (M Murakami) and examines the relationship of shock waves with (bullet) phase transitions (A Guha, CF Delale, G Schnerr, MEH van Dongen) (bullet) induced phase transitions (GEA Meier) as well as their interaction with (bullet) solid foams, textiles, porous and granular media (B Skews, DMJ Smeulders, MEH van Dongen, V Golub, O Mirova) All chapters are self-contained, so they can be read independently, although they are of course thematically interrelated. Taken together, they offer a timely reference on shock waves in multiphase flows, including new viewpoints and burgeoning developments. The book will appeal to beginners as well as professional scientists and engineer...

Improving the Student's Vocabulary Mastery by Using Constructivism Principle in the Second Year Students of Sman 1 Kauman

OpenAIRE

Budairi, Ahmad

2017-01-01

Vocabulary plays important roles in mastering English. Vocabulary refers to all words in the whole language used in a particular variety. In this case, the students have some problems. The problems about difficult in mastering vocabulary, that the students are lack of vocabularies, the students often get difficult in expressing their ideas, the students have low motivation. The students felt unsatisfactory in their results. It's caused the students are lack of practice and lack vocabulary to ...

The Contribution of Student Perceptions of School Climate to Understanding the Disproportionate Punishment of African American Students in a Middle School

Science.gov (United States)

Shirley, Erica L. M.; Cornell, Dewey G.

2012-01-01

This study investigated the contribution of student perceptions of school climate to racial differences in school discipline. Four hundred middle school students completed a school climate survey. Compared to Caucasian students, African-American students were referred to the office for discipline three times as frequently and received five times…

Volume measurement of the leg with the depth camera for quantitative evaluation of edema

Science.gov (United States)

Kiyomitsu, Kaoru; Kakinuma, Akihiro; Takahashi, Hiroshi; Kamijo, Naohiro; Ogawa, Keiko; Tsumura, Norimichi

2017-02-01

Volume measurement of the leg is important in the evaluation of leg edema. Recently, method for measurement by using a depth camera is proposed. However, many depth cameras are expensive. Therefore, we propose a method using Microsoft Kinect. We obtain a point cloud of the leg by Kinect Fusion technique and calculate the volume. We measured the volume of leg for three healthy students during three days. In each measurement, the increase of volume was confirmed from morning to evening. It is known that the volume of leg is increased in doing office work. Our experimental results meet this expectation.

Electrochemistry in light water reactors reference electrodes, measurement, corrosion and tribocorrosion issues

CERN Document Server

Bosch, R -W; Celis, Jean-Pierre

2007-01-01

There has long been a need for effective methods of measuring corrosion within light water nuclear reactors. This important volume discusses key issues surrounding the development of high temperature reference electrodes and other electrochemical techniques. The book is divided into three parts with part one reviewing the latest developments in the use of reference electrode technology in both pressurised water and boiling water reactors. Parts two and three cover different types of corrosion and tribocorrosion and ways they can be measured using such techniques as electrochemical impedance spectroscopy. Topics covered across the book include in-pile testing, modelling techniques and the tribocorrosion behaviour of stainless steel under reactor conditions. Electrochemistry in light water reactors is a valuable reference for all those concerned with corrosion problems in this key technology for the power industry. Discusses key issues surrounding the development of high temperature reference eletrodes A valuab...

The Majority of Library Clients Still Use Person-to-Person Interaction When Asking Reference Questions. A review of: De Groote, Sandra L. “Questions Asked at the Virtual and Physical Health Sciences Reference Desk: How Do They Compare and What Do They Tell Us?” Medical Reference Services Quarterly 24.2 (Summer 2005: 11-23.

Directory of Open Access Journals (Sweden)

Suzanne Pamela Lewis

2006-03-01

Full Text Available Objective - To identify similarities and difference in the questions asked at the virtual and physical refernece desks of a helath scienmces library, in order to better undertand user needs and highlight areas for service improvement. Also to retrospectively analyze reference statistics collected over the previous six years. Design - Use study; retrospective study of reference statistics for the period July 1997 to June 2003; literature review. Setting - Large academic helath sciences library in the United States. Subjects - All questions asked at the reference and information desks, plus questions submitted to the University-wide virtual reference service and answered by a health sciences librarian, over a period of one month. The questions were asked by faculty, staff, students and members of the public. Methods - A literature review was carried out to examine the types of information/reference questions typically asked in health sciences libraries both before and after the mass introduction of remote end-user searching of online resources and the establishment of virtual reference services. Next, the reference statistics collected at the University of Illinois at Chicage (UIC Library of the Health Sciences between July 1997 and June 2003 were examined. For most of this period a digital reference service was offered using a listserv address to which patrons would submit email queries. Beginning in March 2003, a formal virtual reference service (chat and email was provided using commercial software. Finally, data was gathered on questions answered by a health sciences librarians, and clients who asked the question, at either the physical or cirtual reference desk, during the month of November 2003 at the UIC Library of the Health Sciences. Library staff completed an online survey form for each question, and if a client asked more than one question, each question was coded individually. Data included: status of client using the service (faculty

Methods of Celestial Mechanics Volume II: Application to Planetary System, Geodynamics and Satellite Geodesy

CERN Document Server

Beutler, Gerhard

2005-01-01

G. Beutler's Methods of Celestial Mechanics is a coherent textbook for students as well as an excellent reference for practitioners. Volume II is devoted to the applications and to the presentation of the program system CelestialMechanics. Three major areas of applications are covered: (1) Orbital and rotational motion of extended celestial bodies. The properties of the Earth-Moon system are developed from the simplest case (rigid bodies) to more general cases, including the rotation of an elastic Earth, the rotation of an Earth partly covered by oceans and surrounded by an atmosphere, and the rotation of an Earth composed of a liquid core and a rigid shell (Poincaré model). (2) Artificial Earth Satellites. The oblateness perturbation acting on a satellite and the exploitation of its properties in practice is discussed using simulation methods (CelestialMechanics) and (simplified) first order perturbation methods. The perturbations due to the higher-order terms of the Earth's gravitational potential and reso...

Curry’s Study on the Quality of Public Library Reference Service to LGBTQ Youth

Directory of Open Access Journals (Sweden)

Gregg A Stevens

2018-02-01

Full Text Available A Review of: Curry, A. (2005. If I ask, will they answer? Evaluating public library reference service to gay and lesbian youth. Reference & User Services Quarterly, 45(1, 65-75. Retrieved from https://www.jstor.org/journal/refuseserq Abstract Objective - To assess the quality of service provided by reference staff in public libraries when presented with a request for LGBTQ information by a young person. Design - Unobtrusive observation without informed consent. Setting - Public library branches in the greater Vancouver area, British Columbia, Canada. Subjects - Reference librarians. Methods - A 19-year-old posing as a high school student approached reference desk staff at 20 public library branches. The student proxy, “Angela”, was instructed to ask for books on forming a gay-straight alliance at her school and, if there was a full reference interview, to also ask for recommendations of novels that the group might read. She recorded the reactions, both verbal and nonverbal, using Reference and User Services Association guidelines as a template. Library administrators were aware of the potential visits and permitted the research, but the reference desk staff were not aware of a potential visit by the student proxy. The researcher claimed that her method, while deceptive, was necessary to obtain authentic reactions from the library staff. Main Results - Most reference librarians approached by Angela made adequate attempts to assist her, although a few library staff reacted negatively to her query. Half of the librarians reacted positively to the patron’s request, with most of the others providing neutral responses. Very few of the librarians actually taught the patron how to use the library’s catalog to search for materials, and most of the librarians were unable to find appropriate materials due to not knowing the appropriate search terms. Only three library staff showed overt disapproval of the search topic, such as frowning or rushing

Student Centered Financial Services: Innovations That Succeed

Science.gov (United States)

Sinsabaugh, Nancy, Ed.

2007-01-01

This collection of best practices shares how 18 higher education institutions across the country have successfully evaluated and redesigned their student financial services programs to improve services to students and their parents and find cost savings for the institution. This volume illustrates how other institutions have successfully tackled…

Tumor volume in subcutaneous mouse xenografts measured by microCT is more accurate and reproducible than determined by 18F-FDG-microPET or external caliper

DEFF Research Database (Denmark)

Jensen, Mette Munk; Jørgensen, Jesper Tranekjaer; Binderup, Tina

2008-01-01

BACKGROUND: In animal studies tumor size is used to assess responses to anticancer therapy. Current standard for volumetric measurement of xenografted tumors is by external caliper, a method often affected by error. The aim of the present study was to evaluate if microCT gives more accurate...... (n = 20) was determined in vivo by external caliper, microCT and 18F-FDG-PET and subsequently reference volume was determined ex vivo. Intra-observer reproducibility of the microCT and caliper methods were determined by acquiring 10 repeated volume measurements. Volumes of a group of tumors (n = 10......) were determined independently by two observers to assess inter-observer variation. RESULTS: Tumor volume measured by microCT, PET and caliper all correlated with reference volume. No significant bias of microCT measurements compared with the reference was found, whereas both PET and caliper had...

Research within the disciplines foundations for reference and library instruction

CERN Document Server

Keeran, Peggy

2014-01-01

Research within the Disciplines is designed to help reference librarians - and students studying to become librarians - gain that deeper understanding of disciplinary differences that allows them to comfortably solve information needs rather than merely responding to questions, and practical knowledge about how to work with researchers in a library setting.

Comprehensive Technical Report, General Electric Direct-Air-Cycle Aircraft Nuclear Propulsion Program, Program Summary and References

Energy Technology Data Exchange (ETDEWEB)

Thornton, G.; Rothstein, A.J.

1962-06-28

This is one of twenty-one volumes sumarizing the Aircraft Nuclear Propulsion Program of the General Electric Company. This volume discusses the background to the General Electric program, and summarizes the various direct-air-cycle nuclear test assemblies and power plants that were developed. Because of the requirements of high performance, low weight, and small size, vast improvements in existing technology were required to meet the flight objectives. The technological progress achieved during the program is also summarized. The last appendix contains a compilation of the abstracts, tables of contents, and reference lists of the other twenty volumes.

1995 Solid Waste 30-year volume summary

International Nuclear Information System (INIS)

Valero, O.J.; DeForest, T.J.; Templeton, K.J.

1995-06-01

This document, prepared by Pacific Northwest Laboratory (PNL) under the direction of Westinghouse Hanford Company (WHC), provides a description of the annual low-level mixed waste (LLMW) and transuranic/transuranic mixed solid waste (TRU-TRUM) volumes expected to be managed by Hanford's Solid Waste Central Waste Complex (CWC) over the next 30 years. The waste generation sources and waste categories are also described. This document is intended to be used as a reference for short- and long-term planning of the Hanford treatment, storage, and disposal (TSD) activities over the next several decades. By estimating the waste volumes that will be generated in the future, facility planners can determine the timing of key waste management activities, evaluate alternative treatment strategies, and plan storage and disposal capacities. In addition, this document can be used by other waste sites and the general public to gain a better understanding of the types and volumes of waste that will be managed at Hanford

1995 Solid Waste 30-year volume summary

Energy Technology Data Exchange (ETDEWEB)

Valero, O.J. [Westinghouse Hanford Co., Richland, WA (United States); DeForest, T.J.; Templeton, K.J. [Pacific Northwest Lab., Richland, WA (United States)

1995-06-01

This document, prepared by Pacific Northwest Laboratory (PNL) under the direction of Westinghouse Hanford Company (WHC), provides a description of the annual low-level mixed waste (LLMW) and transuranic/transuranic mixed solid waste (TRU-TRUM) volumes expected to be managed by Hanford`s Solid Waste Central Waste Complex (CWC) over the next 30 years. The waste generation sources and waste categories are also described. This document is intended to be used as a reference for short- and long-term planning of the Hanford treatment, storage, and disposal (TSD) activities over the next several decades. By estimating the waste volumes that will be generated in the future, facility planners can determine the timing of key waste management activities, evaluate alternative treatment strategies, and plan storage and disposal capacities. In addition, this document can be used by other waste sites and the general public to gain a better understanding of the types and volumes of waste that will be managed at Hanford.

Chat Transcript Analysis Reveals that Undergraduate Students are Open to Instruction, While Instructors and Librarians Care About Supporting Student Learning

OpenAIRE

Elaine Sullo

2017-01-01

A Review of: Jacoby, J., Ward, D., Avery, S., & Marcyk, E. (2016). The value of chat reference services: A pilot study. portal: Libraries and the Academy, 16(1), 109-129. https://doi.org/10.1353/pla.2016.0013 Objective – To investigate student, instructor, and librarian perspectives of chat reference service in the context of first-year undergraduate students conducting research for an introductory composition course. Design – Focus groups, individual interviews, and surveys. S...

Theoretical study for volume changes associated with the helix-coil transition of peptides.

Science.gov (United States)

Imai, T; Harano, Y; Kovalenko, A; Hirata, F

2001-12-01

We calculate the partial molar volumes and their changes associated with the coil(extended)-to-helix transition of two types of peptide, glycine-oligomer and glutamic acid-oligomer, in aqueous solutions by using the Kirkwood-Buff solution theory coupled with the three-dimensional reference interaction site model (3D-RISM) theory. The volume changes associated with the transition are small and positive. The volume is analyzed by decomposing it into five contributions following the procedure proposed by Chalikian and Breslauer: the ideal volume, the van der Waals volume, the void volume, the thermal volume, and the interaction volume. The ideal volumes and the van der Waals volumes do not change appreciably upon the transition. In the both cases of glycine-peptide and glutamic acid-peptide, the changes in the void volumes are positive, while those in the thermal volumes are negative, and tend to balance those in the void volumes. The change in the interaction volume of glycine-peptide does not significantly contribute, while that of glutamic acid-peptide makes a negative contribution. Copyright 2001 John Wiley & Sons, Inc. Biopolymers 59: 512-519, 2001

Corrosion and Environmental Degradation, 2 Volume Set

Science.gov (United States)

Schütze, Michael; Cahn, Robert W.; Haasen, Peter; Kramer, E. J.

2001-06-01

Corrosion and corrosion protection is one of most important topics in applied materials science. Corrosion science is not only important from an economic point of view, but, due to its interdisciplinary nature combining metallurgy, materials physics and electrochemistry, it is also of high scientific interest. Nowadays corrosion science even gets new impetus from surface science and polymer chemistry. This two-volume reference work belonging to the well renown series Materials Science and Tehcnology provides the reader with a sound and broad survey on the whole subject - from the fundamentals to the latest research results. Written by a team of international top-experts it will become an indispensable reference for any materials scientist, physicist or chemist involved in corrosion science.

Student Use of Library Research Guides Following Library Instruction

Directory of Open Access Journals (Sweden)

Mardi Mahaffy

2013-02-01

Full Text Available Librarians often provide students who attend one-shot library instruction sessions with research guides they can refer to once class is over. These guides, whether in paper or electronic form, serve to remind the students of key points and resources addressed during the session. It is unclear, though, if and how students refer to these guides once leaving the classroom. This article reports on the results of two focus groups made up of students who attended a basic library instruction session as part of a survey art course. The students shared how they used a paper and electronic research guide, delivered via LibGuides, and what they would like research guides to contain. The article also suggests directions for further research on the topic.

Development of the Reference Korean Female Voxel Phantom

International Nuclear Information System (INIS)

Ham, Bo Kyoung; Cho, Kun Woo; Yeom, Yoen Soo; Jeong, Jong Hwi; Kim, Chan Hyeong; Han, Min Cheol

2012-01-01

The objective of this study is for development of the reference Korean female phantom, HDRK-Woman. The phantom was constructed by adjusting a Korean woman voxel phantom to the Reference Korean data. The Korean woman phantom had been developed based on the high-resolution color slice images obtained from an adult Korean female cadaver. There were a total of 39 organs including the 27 organs specified in ICRP 103 for effective dose calculation. The voxel resolution of the phantom was 1.967 X 1.967 X X 2.0619 mm 3 and the voxel array size is 261 X 109 X 825 in the x, y and z directions. Then, the voxel resolution was changed to 2.0351 X 2.0351 X 2.0747 mm 3 for adjustment of the height and total bone mass of the phantom to the Reference Korean data. Finally, the internal organs and tissue were adjusted using in-house software program developed for 3D volume adjustment of the organs and tissue. The effective dose values of HDRK phantoms were calculated for broad parallel photon beams using MCNPX Monte Carlo code and compared with those of ICRP phantoms.

Development of the Reference Korean Female Voxel Phantom

Energy Technology Data Exchange (ETDEWEB)

Ham, Bo Kyoung; Cho, Kun Woo [University of Science and Technology, Korea Institute of Nuclear Safety, Daejeon (Korea, Republic of); Yeom, Yoen Soo; Jeong, Jong Hwi; Kim, Chan Hyeong; Han, Min Cheol [Hanyang University, Seoul (Korea, Republic of)

2012-03-15

The objective of this study is for development of the reference Korean female phantom, HDRK-Woman. The phantom was constructed by adjusting a Korean woman voxel phantom to the Reference Korean data. The Korean woman phantom had been developed based on the high-resolution color slice images obtained from an adult Korean female cadaver. There were a total of 39 organs including the 27 organs specified in ICRP 103 for effective dose calculation. The voxel resolution of the phantom was 1.967 X 1.967 X X 2.0619 mm{sup 3} and the voxel array size is 261 X 109 X 825 in the x, y and z directions. Then, the voxel resolution was changed to 2.0351 X 2.0351 X 2.0747 mm{sup 3} for adjustment of the height and total bone mass of the phantom to the Reference Korean data. Finally, the internal organs and tissue were adjusted using in-house software program developed for 3D volume adjustment of the organs and tissue. The effective dose values of HDRK phantoms were calculated for broad parallel photon beams using MCNPX Monte Carlo code and compared with those of ICRP phantoms.

Application Level Protocol Development for Library and Information Science Applications. Volume 1: Service Definition. Volume 2: Protocol Specification. Report No. TG.1.5; TG.50.

Science.gov (United States)

Aagaard, James S.; And Others

This two-volume document specifies a protocol that was developed using the Reference Model for Open Systems Interconnection (OSI), which provides a framework for communications within a heterogeneous network environment. The protocol implements the features necessary for bibliographic searching, record maintenance, and mail transfer between…

Information architecture. Volume 2, Part 1: Baseline analysis summary

Energy Technology Data Exchange (ETDEWEB)

NONE

1996-12-01

The Department of Energy (DOE) Information Architecture, Volume 2, Baseline Analysis, is a collaborative and logical next-step effort in the processes required to produce a Departmentwide information architecture. The baseline analysis serves a diverse audience of program management and technical personnel and provides an organized way to examine the Department`s existing or de facto information architecture. A companion document to Volume 1, The Foundations, it furnishes the rationale for establishing a Departmentwide information architecture. This volume, consisting of the Baseline Analysis Summary (part 1), Baseline Analysis (part 2), and Reference Data (part 3), is of interest to readers who wish to understand how the Department`s current information architecture technologies are employed. The analysis identifies how and where current technologies support business areas, programs, sites, and corporate systems.

Complete blood count reference values of cord blood in Taiwan and the influence of gender and delivery route on them.

Science.gov (United States)

Chang, Yu-Hsun; Yang, Shang-Hsien; Wang, Tso-Fu; Lin, Teng-Yi; Yang, Kuo-Liang; Chen, Shu-Huey

2011-06-01

Cord blood banking has become more popular in recent years. Checking cord blood complete blood count (CBC) and white blood cell (WBC) differential counts (DCs) is essential before cryopreserving the cord blood units. Therefore, establishing the normal reference values of cord blood CBC and WBC DC is important in clinical practice and research. To obtain a large-scale population-based normal CBC and WBC DC reference values of healthy neonates' cord blood from a public cord blood bank and to investigate the influence of the gender and delivery route. From September 2001 to November 2006, the cord blood of healthy Taiwanese neonates with gestational age 36 weeks and more were collected by Tzu Chi Cord Blood Bank with written informed consents. All cord blood samples were analyzed by Sysmex XE2100 automated hematology analyzer (Sysmex Corporation, Kobe, Japan) to obtain the CBC. The WBC DC was calculated by manual method. We used Student's t test and Mann-Whitney U test for investigating the influences of gender and delivery route on the CBC and WBC DC reference values. The results were presented by mean±standard deviation or 2.5-97.5th percentiles. In the study period, totally 5602 cord blood samples were collected eligibly for analysis. The cord blood CBC and WBC DC normal reference values were calculated. The female neonates had significantly higher mean corpuscular volume, platelet count, and WBC count, but lower red blood cell (RBC) count, hemoglobin (Hb), hematocrit, and mean corpuscular Hb concentration values (pTaiwan. Gender and delivery routes were important confounding factors that influenced the cord blood CBC and WBC DC values. Copyright © 2011. Published by Elsevier B.V.

Hydrothermal analysis in engineering using control volume finite element method

CERN Document Server

Sheikholeslami, Mohsen

2015-01-01

Control volume finite element methods (CVFEM) bridge the gap between finite difference and finite element methods, using the advantages of both methods for simulation of multi-physics problems in complex geometries. In Hydrothermal Analysis in Engineering Using Control Volume Finite Element Method, CVFEM is covered in detail and applied to key areas of thermal engineering. Examples, exercises, and extensive references are used to show the use of the technique to model key engineering problems such as heat transfer in nanofluids (to enhance performance and compactness of energy systems),

Reference Values for Assessment of Unilateral Limb Lymphedema with Dual-Energy X-Ray Absorptiometry

DEFF Research Database (Denmark)

Gjorup, Caroline A; Hendel, Helle W; Klausen, Tobias W

2018-01-01

INTRODUCTION: The clinical assessment of unilateral limb lymphedema is commonly based on measurements of interlimb volume differences. Reference values for interlimb percentage differences of the volume, fat mass, and lean mass measured with dual-energy X-ray absorptiometry (DXA) scan are, however...... is calculated as follows: ("Limb-of-interest"-contralateral)/contralateral × 100. The interlimb percentage differences for the limb-of-interest were stratified to upper (according to handedness) and lower limbs and categorized as none/mild, moderate, or severe, respectively, based on whether the value is below...

Handbook of Student Financial Aid: Programs, Procedures, and Policies.

Science.gov (United States)

Fenske, Robert H.; And Others

The full range of topics relevant to student financial aid are covered in this book by a variety of experts in financial aid administration and scholarship. The volume details how to organize, implement and assess a financial aid program--including how to determine student need, deal with student bankruptcy and aid termination, and improve…

Efficient Location of Research Reference Sources in the Field of Dance.

Science.gov (United States)

Kissinger, Pat; Jay, Danielle

More than 45 basic dance reference research sources that would be useful to students, scholars, teachers, historians, and therapists are discussed in this bibliographic essay. Aspects of dance covered include choreography, criticism, teaching principles, aesthetic theory, dance therapy, and history. Sources are grouped by type: dictionaries and…

Reference equilibrium core with central flux irradiation facility for Pakistan research reactor-1

International Nuclear Information System (INIS)

Israr, M.; Shami, Qamar-ud-din; Pervez, S.

1997-11-01

In order to assess various core parameters a reference equilibrium core with Low Enriched Uranium (LEU) fuel for Pakistan Research Reactor (PARR-1) was assembled. Due to increased volume of reference core, the average neutron flux reduced as compared to the first higher power operation. To get a higher neutron flux an irradiation facility was created in centre of the reference equilibrium core where the advantage of the neutron flux peaking was taken. Various low power experiments were performed in order to evaluate control rods worth and neutron flux mapping inside the core. The neutron flux inside the central irradiation facility almost doubled. With this arrangement reactor operation time was cut down from 72 hours to 48 hours for the production of the required specific radioactivity. (author)

Working up a Debt: Students as Vulnerable Consumers

Science.gov (United States)

Robson, Julie; Farquhar, Jillian Dawes; Hindle, Christopher

2017-01-01

Students are recognized as vulnerable consumers where financial matters are concerned, particularly with reference to indebtedness. This study examines student indebtedness in order to initiate wider debate about student vulnerability. We consider vulnerability as dynamic and temporal, linked to an event that renders the consumer susceptible to…

CT-guided intracavitary radiotherapy for cervical cancer: Comparison of conventional point A plan with clinical target volume-based three-dimensional plan using dose-volume parameters

International Nuclear Information System (INIS)

Shin, Kyung Hwan; Kim, Tae Hyun; Cho, Jung Keun; Kim, Joo-Young; Park, Sung Yong; Park, Sang-Yoon; Kim, Dae Yong; Chie, Eui Kyu; Pyo, Hong Ryull; Cho, Kwan Ho

2006-01-01

Purpose: To perform an intracavitary radiotherapy (ICR) plan comparison between the conventional point A plan (conventional plan) and computed tomography (CT)-guided clinical target volume-based plan (CTV plan) by analysis of the quantitative dose-volume parameters and irradiated volumes of organs at risk in patients with cervical cancer. Methods and Materials: Thirty plans for 192 Ir high-dose-rate ICR after 30-40-Gy external beam radiotherapy were investigated. CT images were acquired at the first ICR session with artifact-free applicators in place. The gross tumor volume, clinical target volume (CTV), point A, and International Commission on Radiation Units and Measurements Report 38 rectal and bladder points were defined on reconstructed CT images. A fractional 100% dose was prescribed to point A in the conventional plan and to the outermost point to cover all CTVs in the CTV plan. The reference volume receiving 100% of the prescribed dose (V ref ), and the dose-volume parameters of the coverage index, conformal index, and external volume index were calculated from the dose-volume histogram. The bladder, rectal point doses, and percentage of volumes receiving 50%, 80%, and 100% of the prescribed dose were also analyzed. Results: Conventional plans were performed, and patients were categorized on the basis of whether the 100% isodose line of point A prescription dose fully encompassed the CTV (Group 1, n = 20) or not (Group 2, n = 10). The mean gross tumor volume (11.6 cm 3 ) and CTV (24.9 cm 3 ) of Group 1 were smaller than the corresponding values (23.7 and 44.7 cm 3 , respectively) for Group 2 (p = 0.003). The mean V ref for all patients was 129.6 cm 3 for the conventional plan and 97.0 cm 3 for the CTV plan (p = 0.003). The mean V ref in Group 1 decreased markedly with the CTV plan (p < 0.001). For the conventional and CTV plans in all patients, the mean coverage index, conformal index, and external volume index were 0.98 and 1.0, 0.23 and 0.34, and 3.86 and

Site Environmental Report for 2011, Volumes 1& 2

Energy Technology Data Exchange (ETDEWEB)

Baskin, David; Bauters, Tim; Borglin, Ned; Fox, Robert; Horst, Blair; Jelinski, John; Lackner, Ginny; Philliber, Jeff; Rothermich, Nancy; Thorson, Patrick; Wahl, Linnea; Xu, Suying

2012-09-12

The Site Environmental Report for 2011 summarizes Berkeley Lab’s environmental management performance, presents environmental monitoring results, and describes significant programs for calendar year (CY) 2011. Throughout this report, “Berkeley Lab” or “LBNL” refers both to (1) the multiprogram scientific facility the UC manages and operates on the 202-acre university-owned site located in the hills above the UC Berkeley campus, and the site itself, and (2) the UC as managing and operating contractor for Ernest Orlando Lawrence Berkeley National Laboratory. The report is separated into two volumes. Volume I is organized into an executive summary followed by six chapters that include an overview of LBNL, a discussion of its Environmental Management System (EMS), the status of environmental programs, summarized results from surveillance and monitoring activities, and quality assurance (QA) measures. Volume II contains individual data results from surveillance and monitoring activities.

International Students in China

DEFF Research Database (Denmark)

As the number of international students in Chinese higher education increases steadily, this volume is one of the first to focus on their many and varied experiences. With contributions focusing on such topics as intercultural adaptation, soft power and interculturality, language learning strateg...

The Organic Food Method and Movement: An Interdisciplinary Reference Review

Science.gov (United States)

Park, Elizabeth E.

2011-01-01

From popular movies to New York Times bestsellers, organic food is widely acknowledged to be of growing importance. Many community college students are asking: How is organic food different from everything else in the grocery store? What impact does farming have on the environment? How safe is our food? A survey of reference works introduces…

Quantitative analysis of normal fetal brain volume and flow by three-dimensional power Doppler ultrasound

Directory of Open Access Journals (Sweden)

Ju-Chun Hsu

2013-09-01

Conclusion: 3D ultrasound can be used to assess the fetal brain volume and blood flow development quantitatively. Our study indicates that the fetal brain vascularization and blood flow correlates significantly with the advancement of GA. This information may serve as a reference point for further studies of the fetal brain volume and blood flow in abnormal conditions.

High energy physicists and graduate students. 1978 census

Energy Technology Data Exchange (ETDEWEB)

None

1978-11-01

This listing of physicists and students associated with the U.S. high-energy physics program was obtained by asking the research groups, laboratories, and other agencies involved to update previous information. The first part of this volume is an alphabetical listing and includes only the name, rank, and institution of high-energy physicists and graduate students. The second part of the volume is arranged by institution. Within each institution, the faculty (or permanent staff) and the graduate students are presented in separate alphabetical lists. For each person the entry indicates the year and institution of highest degree, rank and institutional affiliation with starting dates, up to three items selected from a list of research specialties, and sources of federal support. For the graduate students, there is also indicated an estimated date for their degree. Where appropriate, a person is listed at more than one institution. Except as noted in the headings, the information is intended to indicate the situation as of January 1, 1978. (RWR)

High energy physicists and graduate students. 1978 census

International Nuclear Information System (INIS)

1978-11-01

This listing of physicists and students associated with the U.S. high-energy physics program was obtained by asking the research groups, laboratories, and other agencies involved to update previous information. The first part of this volume is an alphabetical listing and includes only the name, rank, and institution of high-energy physicists and graduate students. The second part of the volume is arranged by institution. Within each institution, the faculty (or permanent staff) and the graduate students are presented in separate alphabetical lists. For each person the entry indicates birthdate, the year and institution of highest degree, rank and institutional affiliation with starting dates, up to three items selected from a list of research specialties, and sources of federal support. For the graduate students, there is also indicated an estimated date for their degree. Where appropriate, a person is listed at more than one institution. Except as noted in the headings, the information is intended to indicate the situation as of January 1, 1978

Interactions: A Study of Office Reference Statistics

Directory of Open Access Journals (Sweden)

Naomi Lederer

2012-06-01

Full Text Available Objective – The purpose of this study was to analyze the data from a referencestatistics-gathering mechanism at Colorado State University (CSU Libraries. It aimedprimarily to better understand patron behaviours, particularly in an academic librarywith no reference desk.Methods – The researchers examined data from 2007 to 2010 of College LiaisonLibrarians’ consultations with patrons. Data were analyzed by various criteria,including patron type, contact method, and time spent with the patron. Theinformation was examined in the aggregate, meaning all librarians combined, andthen specifically from the Liberal Arts and Business subject areas.Results – The researchers found that the number of librarian reference consultationsis substantial. Referrals to librarians from CSU’s Morgan Library’s one public servicedesk have declined over time. The researchers also found that graduate students arethe primary patrons and email is the preferred contact method overall.Conclusion – The researchers found that interactions with patrons in librarians’ offices – either in person or virtually – remain substantial even without a traditional reference desk. The data suggest that librarians’ efforts at marketing themselves to departments, colleges, and patrons have been successful. This study will be of value to reference, subject specialist, and public service librarians, and library administrators as they consider ways to quantify their work, not only for administrative purposes, but in order to follow trends and provide services and staffing accordingly.

Reference values for spirometry in preschool children.

Science.gov (United States)

Burity, Edjane F; Pereira, Carlos A C; Rizzo, José A; Brito, Murilo C A; Sarinho, Emanuel S C

2013-01-01

Reference values for lung function tests differ in samples from different countries, including values for preschoolers. The main objective of this study was to derive reference values in this population. A prospective study was conducted through a questionnaire applied to 425 preschool children aged 3 to 6 years, from schools and day-care centers in a metropolitan city in Brazil. Children were selected by simple random sampling from the aforementioned schools. Peak expiratory flow (PEF), forced vital capacity (FVC), forced expiratory volumes (FEV1, FEV0.50), forced expiratory flow (FEF25-75) and FEV1/FVC, FEV0.5/FVC and FEF25-75/FVC ratios were evaluated. Of the 425 children enrolled, 321 (75.6%) underwent the tests. Of these, 135 (42.0%) showed acceptable results with full expiratory curves and thus were included in the regression analysis to define the reference values. Height and gender significantly influenced FVC values through linear and logarithmic regression analysis. In males, R(2) increased with the logarithmic model for FVC and FEV1, but the linear model was retained for its simplicity. The lower limits were calculated by measuring the fifth percentile residues. Full expiratory curves are more difficult to obtain in preschoolers. In addition to height, gender also influences the measures of FVC and FEV1. Reference values were defined for spirometry in preschool children in this population, which are applicable to similar populations. Copyright © 2013 Sociedade Brasileira de Pediatria. Published by Elsevier Editora Ltda. All rights reserved.

A model for precalculus students to determine the resonance frequency of a trumpet mouthpiece

Science.gov (United States)

Chapman, Robert C.

2004-05-01

The trumpet mouthpiece as a Helmholtz resonator is used to show precalculus students a mathematical model for determining the approximate resonance frequency of the mouthpiece. The mathematics is limited to algebra and trigonometry. Using a system of mouthpieces that have interchangeable cups and backbores, students are introduced to the acoustics of this resonator. By gathering data on 51 different configurations of mouthpieces, the author modifies the existing Helmholtz resonator equation to account for both cup volumes and backbore configurations. Students then use this model for frequency predictions. Included are how to measure the different physical attributes of a trumpet mouthpiece at minimal cost. This includes methods for measuring cup volume, backbore volume, backbore length, throat area, etc. A portion of this phase is de-signed for students to become acquainted with some of the vocabulary of acoustics and the physics of sound.

Roaming Reference: Reinvigorating Reference through Point of Need Service

Directory of Open Access Journals (Sweden)

Kealin M. McCabe

2011-11-01

Full Text Available Roaming reference service was pursued as a way to address declining reference statistics. The service was staffed by librarians armed with iPads over a period of six months during the 2010-2011 academic year. Transactional statistics were collected in relation to query type (Research, Facilitative or Technology, location and approach (librarian to patron, patron to librarian or via chat widget. Overall, roaming reference resulted in an additional 228 reference questions, 67% (n=153 of which were research related. Two iterations of the service were implemented, roaming reference as a standalone service (Fall 2010 and roaming reference integrated with traditional reference desk duties (Winter 2011. The results demonstrate that although the Weller Library’s reference transactions are declining annually, they are not disappearing. For a roaming reference service to succeed, it must be a standalone service provided in addition to traditional reference services. The integration of the two reference models (roaming reference and reference desk resulted in a 56% decline in the total number of roaming reference questions from the previous term. The simple act of roaming has the potential to reinvigorate reference services as a whole, forcing librarians outside their comfort zones, allowing them to reach patrons at their point of need.

System of large transport containers for waste from dismantling light water and gas-cooled nuclear reactors. Volume 1

International Nuclear Information System (INIS)

Price, M.S.T.; Lafontaine, I.

1985-01-01

The purpose of this volume is to introduce the main types of nuclear reactor in the European Community (EC), select reference plants for further study, estimate the waste streams from the reference reactors, survey the transport regulations and assess existing containers

Benefits of Record Management For Scientific Writing (Study of Metadata Reception of Zotero Reference Management Software in UIN Malang

Directory of Open Access Journals (Sweden)

Moch Fikriansyah Wicaksono

2018-01-01

Full Text Available Record creation and management by individuals or organizations grows rapidly, particularly the change from print to electronics, and the smallest part of record (metadata. Therefore, there is a need to perform record management metadata, particularly for students who have the needs of recording references and citation. Reference management software (RMS is a software to help reference management, one of them named zotero. The purpose of this article is to describe the benefits of record management for the writing of scientific papers for students, especially on biology study program in UIN Malik Ibrahim Malang. The type of research used is descriptive with quantitative approach. To increase the depth of respondents' answers, we used additional data by conducting interviews. The selected population is 322 students, class of 2012 to 2014, using random sampling. The selection criteria were chosen because the introduction and use of reference management software, zotero have started since three years ago.  Respondents in this study as many as 80 people, which is obtained from the formula Yamane. The results showed that 70% agreed that using reference management software saved time and energy in managing digital file metadata, 71% agreed that if digital metadata can be quickly stored into RMS, 65% agreed on the ease of storing metadata into the reference management software, 70% agreed when it was easy to configure metadata to quote and bibliography, 56.6% agreed that the metadata stored in reference management software could be edited, 73.8% agreed that using metadata will make it easier to write quotes and bibliography.

Topology as fluid geometry two-dimensional spaces, volume 2

CERN Document Server

Cannon, James W

2017-01-01

This is the second of a three volume collection devoted to the geometry, topology, and curvature of 2-dimensional spaces. The collection provides a guided tour through a wide range of topics by one of the twentieth century's masters of geometric topology. The books are accessible to college and graduate students and provide perspective and insight to mathematicians at all levels who are interested in geometry and topology. The second volume deals with the topology of 2-dimensional spaces. The attempts encountered in Volume 1 to understand length and area in the plane lead to examples most easily described by the methods of topology (fluid geometry): finite curves of infinite length, 1-dimensional curves of positive area, space-filling curves (Peano curves), 0-dimensional subsets of the plane through which no straight path can pass (Cantor sets), etc. Volume 2 describes such sets. All of the standard topological results about 2-dimensional spaces are then proved, such as the Fundamental Theorem of Algebra (two...

Your Environment: A Guide for Students.

Science.gov (United States)

Florida State Dept. of Environmental Protection, Tallahassee.

This environmental guide for students contains stories on air pollution, water pollution, wetlands, groundwater, solid and hazardous waste, and coastal areas. It includes a section on how students can help Florida's environment. A reference section with contact names and addresses for Florida's governmental and citizen organizations is also…

Reference Services in Australian Academic Libraries are Becoming More Multifaceted, A Review of: Burke, L. “Models of Reference Services in Australian Academic Libraries.” Journal of Librarianship and Information Science 40.4 (2008: 269‐86.

Directory of Open Access Journals (Sweden)

David Herron

2009-09-01

Full Text Available Objective – To investigate the current organizational models for reference work in Australian academic libraries, and how these reference services are staffed.Design – Mixed methods.Setting – Academic universities in Australia.Subjects – Forty Council of Australian University Librarians (CAUL member libraries.Methods – A literature study was undertaken to (1 find a definition of reference services and (2 explore the development of reference service models over time. Statistics from the CAUL member libraries were studied for trends in student population and number of academic and library staff. A web‐based survey, with questions based on the findings in the literature study, was then distributed to the 40 Australian university libraries in 2006. Respondents were asked when the library commenced different reference services in five areas: formats in which the library received and responded to reference queries, information literacy, subject specialization, liaison activities, and collection development. Respondents also answered questions about the organization of the reference department, including: whether they had a separate or integrated model; the size of the reference collections; if they had a librarian dedicated to supporting students studying in remote or distant mode; if the interlibrary loans department was part of the suite of reference services; and if they had a mission or statement of purpose for their reference services department.Main Results – Based on the literature study, the working definition of reference services (1 for the project was “all activities which assist in providing relevant and appropriate information services to patrons” (270, including:•All interactions with patrons to assist them in their searches for information in all media types.•All training by librarians of patrons to be able to access information for themselves.•Activities to help the library stay informed of relevant developments

Site Environmental Report for 2005 Volume I and Volume II

Energy Technology Data Exchange (ETDEWEB)

Ruggieri, Michael

2006-07-07

Each year, Ernest Orlando Lawrence Berkeley National Laboratory prepares an integrated report on its environmental programs to satisfy the requirements of United States Department of Energy Order 231.1A, ''Environment, Safety, and Health Reporting''. The ''Site Environmental Report for 2005'' summarizes Berkeley Lab's environmental management performance, presents environmental monitoring results, and describes significant programs for calendar year 2005. (Throughout this report, Ernest Orlando Lawrence Berkeley National Laboratory is referred to as ''Berkeley Lab'', ''the Laboratory'', ''Lawrence Berkeley National Laboratory'', and ''LBNL''.) The report is separated into two volumes. Volume I contains an overview of the Laboratory, the status of environmental programs, and summarized results from surveillance and monitoring activities. This year's Volume I text body is organized into an executive summary followed by six chapters. The report's structure has been reorganized this year, and it now includes a chapter devoted to environmental management system topics. Volume II contains individual data results from surveillance and monitoring activities. The ''Site Environmental Report'' is distributed by releasing it on the Web from the Berkeley Lab Environmental Services Group (ESG) home page, which is located at http://www.lbl.gov/ehs/esg/. Many of the documents cited in this report also are accessible from the ESG Web page. CD and printed copies of this Site Environmental Report are available upon request. The report follows the Laboratory's policy of using the International System of Units (SI), also known as the metric system of measurements. Whenever possible, results are also reported using the more conventional (non-SI) system of measurements, because the non-SI system is referenced by several current

Older medical students' performances at McGill University.

Science.gov (United States)

Feil, D; Kristian, M; Mitchell, N

1998-01-01

To compare admission data and academic performances of medical students younger and older than 25, and to qualify older students' experiences and perceptions in medical school. The authors reviewed 1988-1991 data for applications to the McGill University Faculty of Medicine. Data included GPAs and MCAT scores, as well as ratings for reference letters, autobiographical statements, and interviews. For those same years, the authors measured students' academic performances in the preclinical and clinical years. The authors compared the data by students' age: "younger" students, aged 17 to 24; and "older" students, aged 25 and above. All enrolled students took the Derogatis Stress Profile, and the older students participated in focus groups. The older applicants had lower GPAs and MCAT scores, but higher interview and reference letter ratings. For older accepted students, basic science course scores were lower than those of younger students, but clinical scores did not differ significantly between the groups. The two groups had similar stress levels, although older students tested lower in driven behavior, relaxation potential, attitude posture, and hostility. In focus groups, the older students spoke of learning style differences, loss of social support, and loss of professional identity. Different scores in admission criteria suggest that McGill uses different standards to select older medical students. Older students admitted under different criteria, however, do just as well as do younger students by their clinical years. A broad-based study of admission criteria and outcomes for the older student population is warranted.

Dose and volume specification for reporting NCT. An ICRU-IAEA initiative

International Nuclear Information System (INIS)

Wambersie, A.; Gahbauer, R.A.; Whitmore, G.; Levin, C.V.

2000-01-01

The present recommendations result from of an ICRU-IAEA initiative for harmonization of reporting NCT (Neutron Capture Therapy). As stated by the ISNCT, harmonization of reporting is required to understand what has actually been done and interpret the clinical results on the basis of reliable information. Prescription of a treatment remains the responsibility of the radiation oncologist in charge of the patient. Complete oncological data should be reported, including Gross Tumor Volume (GTV) and Clinical Target Volume (CTV) as well as Planning Target Volume (PTV), Treated Volume and Organs/Structures at Risk. A reference point for reporting dose should be selected in the central part of the PTV/CTV. At each point of interest, the four components contributing to the absorbed dose and the weighting factors applied to take account of the RBE (Relative Biological Effectiveness) differences should be specified. (author)

TEX-SIS Occ/Tec Non-Returning Student Follow-Up, Volume 1, Number 1.

Science.gov (United States)

Gose, Frank

In 1981, selected data about nonreturning occupational/technical students were collected at Yavapai College using the TEX-SIS follow-up system, which was developed by the Texas Education Agency and Texas Coordinating Board for Universities and Colleges. A sample of 449 students was selected from the approximately 900 students who had enrolled in…

Parental Influences on Hmong University Students' Success

Directory of Open Access Journals (Sweden)

Yudan Wang

2010-01-01

Full Text Available This study reports findings from a series of focus groups conducted on Hmong American university students. The purpose of the focus groups was to understand how, from the perspective of Hmong American students themselves, acculturative stress and parents influencedacademic success. Findings of a thematic analysis centered on general themes across focus group respondents that related to parental socialization, gendered socialization, and ethnic identification. Each identified themes is discussed in reference to gendered patterns of experiences in Hmong American families and in reference to academic success.

Small-Volume Injections: Evaluation of Volume Administration Deviation From Intended Injection Volumes.

Science.gov (United States)

Muffly, Matthew K; Chen, Michael I; Claure, Rebecca E; Drover, David R; Efron, Bradley; Fitch, William L; Hammer, Gregory B

2017-10-01

In the perioperative period, anesthesiologists and postanesthesia care unit (PACU) nurses routinely prepare and administer small-volume IV injections, yet the accuracy of delivered medication volumes in this setting has not been described. In this ex vivo study, we sought to characterize the degree to which small-volume injections (≤0.5 mL) deviated from the intended injection volumes among a group of pediatric anesthesiologists and pediatric postanesthesia care unit (PACU) nurses. We hypothesized that as the intended injection volumes decreased, the deviation from those intended injection volumes would increase. Ten attending pediatric anesthesiologists and 10 pediatric PACU nurses each performed a series of 10 injections into a simulated patient IV setup. Practitioners used separate 1-mL tuberculin syringes with removable 18-gauge needles (Becton-Dickinson & Company, Franklin Lakes, NJ) to aspirate 5 different volumes (0.025, 0.05, 0.1, 0.25, and 0.5 mL) of 0.25 mM Lucifer Yellow (LY) fluorescent dye constituted in saline (Sigma Aldrich, St. Louis, MO) from a rubber-stoppered vial. Each participant then injected the specified volume of LY fluorescent dye via a 3-way stopcock into IV tubing with free-flowing 0.9% sodium chloride (10 mL/min). The injected volume of LY fluorescent dye and 0.9% sodium chloride then drained into a collection vial for laboratory analysis. Microplate fluorescence wavelength detection (Infinite M1000; Tecan, Mannedorf, Switzerland) was used to measure the fluorescence of the collected fluid. Administered injection volumes were calculated based on the fluorescence of the collected fluid using a calibration curve of known LY volumes and associated fluorescence.To determine whether deviation of the administered volumes from the intended injection volumes increased at lower injection volumes, we compared the proportional injection volume error (loge [administered volume/intended volume]) for each of the 5 injection volumes using a linear

Attitudes of medical students to induced abortion.

Science.gov (United States)

Buga, G A B

2002-05-01

Unsafe abortion causes 13% of maternal deaths worldwide. Safe abortion can only be offered under conditions where legislation has been passed for legal termination of unwanted pregnancy. Where such legislation exists, accessibility of safe abortion depends on the attitudes of doctors and other healthcare workers to induced abortion. Medical students as future doctors may have attitudes to abortion that will affect the provision of safe abortion. Little is known about the attitudes of South African medical students to abortion. To assess sexual practices and attitudes of medical students to induced abortion and to determine some of the factors that may influence these attitudes. A cross-sectional analytic study involving the self-administration of an anonymous questionnaire. The questionnaire was administered to medical students at a small, but growing, medical school situated in rural South Africa. Demographic data, sexual practices and attitudes to induced abortion. Two hundred and forty seven out of 300 (82.3%) medical students responded. Their mean age was 21.81 +/- 3.36 (SD) years, and 78.8% were Christians, 17.1% Hindus and 2.6% Muslims. Although 95% of the respondents were single, 68.6% were already sexually experienced, and their mean age at coitarche was 17.24+/-3.14 (SD) years. Although overall 61.2% of the respondents felt abortion is murder either at conception or later, the majority (87.2%) would perform or refer a woman for abortion under certain circumstances. These circumstances, in descending order of frequency, include: threat to mother's life (74.1%), in case of rape (62.3%), the baby is severely malformed (59.5%), threat to mother's mental health (53.8%) and parental incompetence (21.0%). Only 12.5% of respondents would perform or refer for abortion on demand, 12.8% would neither perform nor refer for abortion under any circumstances. Religious affiliation and service attendance significantly influenced some of these attitudes and beliefs

Influence of endoleaks on aneurysm volume and hemodynamics after endovascular aneurysm repair

International Nuclear Information System (INIS)

Pitton, M.B.; Welter, B.; Schmenger, P.; Thelen, M.; Dueber, C.; Neufang, A.

2003-01-01

Purpose: To evaluate the aneurysm volume and the intra-aneurysmatic pressure and maximal pressure pulse (dp/dtmax) in completely excluded aneurysms and cases with endoleaks. Materials and Methods: In 36 mongrel dogs, experimental autologous aneurysms were treated with stent-grafts. All aortic side branches were ligated in 18 cases (group I) but were preserved in group II (n=18). Aneurysm volumes were calculated from CT scans before and after intervention, and from follow-up CT scans at 1 week, 6 weeks and 6 months. Finally, for hemodynamic measurements, manometer-tipped catheters were introduced into the excluded aneurysm sac (group I and II), selectively in endoleaks (group II), and intraluminally for aortic reference measurement. Systemic hypertension was induced by volume load and pharmacologic stress. Pressure curves and dp/dt were simultaneously recorded and the ratios of aneurysm pressure to systemic reference pressure calculated. Results: At follow-up, type-II, endoleaks were excluded in all cases of group I by selective angiography. In contrast, endoleaks were evident in all cases of group II. Volumetric analysis of the aneurysms showed a benefit for group I with an improved aneurysm shrinkage: ΔVolume +0.08%, -1.62% and -9.76% at 1 week, 6 weeks and 6 months follow-up (median, group I), compared to +1.43%, +0.67%, and -4.04% (group II), p [de

Undergraduate and Postgraduate Students in a North American University are Choosing to use Chat Reference Services for all Kinds of Reasons. A review of: Ward, David. “Why Users Choose Chat: A Survey of Behavior and Motivations.” Internet Reference Services Quarterly 10.1 (2005: 29-46.

Directory of Open Access Journals (Sweden)

Gill Needham

2006-03-01

Full Text Available Objective – To investigate reasons why undergraduate and postgraduate students choose to use chat reference services and their satisfaction with the experience. Design – User survey. Setting – Large academic library in the United States. Subjects – A total of 341 library users took part in the survey. Of these, 79 were graduate students, 215 undergraduates, 21 staff, 5 alumni and 21 members of the public. Method – A user survey form was posted on the library website for a period of one month (March 2003. Users of the chat reference service received an automatic closing message asking them to complete the survey. Responses were fed into a database to be analysed by the research staff. Additional data was also gathered about the behaviour of all users of the chat service during that period – both responders and non‐responders. Main results – The most popular reason for choosing to use a chat service was the desire for a speedy response, followed by ‘distance from the library’. Responders chose to use chat to ask a range of different kinds of questions. Nearly half (45% were looking for a specific resource and 23% were seeking help at the beginning of their research. There were notable differences between undergraduate and graduate students. Twice as many undergraduates as graduates used the service to help them get started on their research. Graduates were three times as likely as undergraduates to be using the service to address technical problems they were having with the website. Overall satisfaction with the service was extremely high, with 77.5% rating it 5 out of 5 and 94.5% giving it 4 or 5 out of 5. Conclusion – Chat reference services are popular with users primarily because they are quick and convenient. However, users expect that these services will be able to deal with all types of questions, including help with research. This challenges an assumption by library staff that the medium is only suitable for short

Dual Enrollment for High School Students

Science.gov (United States)

Edwards, Linsey; Hughes, Katherine

2011-01-01

Dual enrollment programs allow high school students to enroll in college courses and potentially earn college credit. The term concurrent enrollment is sometimes used interchangeably with dual enrollment, and sometimes to refer to a particular model of dual enrollment. In some programs, students earn high school and college credit simultaneously;…

Socioeconomic effects of the DOE Gas Centrifuge Enrichment Plant. Volume 2: appendices

International Nuclear Information System (INIS)

1979-01-01

Volume 2 contains 18 appendices: schools; fire protection; law enforcement; water and sewer systems; solid waste; health care; transportation; recreation; labor force; economic effects; finance; school finance; bibliography; contacts; project methodology; service impacts; reference tables; and response to comments

Cavity enhanced eigenmode multiplexing for volume holographic data storage

Science.gov (United States)

Miller, Bo E.; Takashima, Yuzuru

2017-08-01

Previously, we proposed and experimentally demonstrated enhanced recording speeds by using a resonant optical cavity to semi-passively increase the reference beam power while recording image bearing holograms. In addition to enhancing the reference beam power the cavity supports the orthogonal reference beam families of its eigenmodes, which can be used as a degree of freedom to multiplex data pages and increase storage densities for volume Holographic Data Storage Systems (HDSS). While keeping the increased recording speed of a cavity enhanced reference arm, image bearing holograms are multiplexed by orthogonal phase code multiplexing via Hermite-Gaussian eigenmodes in a Fe:LiNbO3 medium with a 532 nm laser at two Bragg angles for expedited recording of four multiplexed holograms. We experimentally confirmed write rates are enhanced by an average factor of 1.1, and page crosstalk is about 2.5%. This hybrid multiplexing opens up a pathway to increase storage density while minimizing modifications to current angular multiplexing HDSS.

The Role of Synchronous Virtual Reference in Teaching and Learning: A Grounded Theory Analysis of Instant Messaging Transcripts

Science.gov (United States)

Passonneau, Sarah; Coffey, Dan

2011-01-01

Electronic communication technologies continue to change the landscape of reference services. For many users, virtual communication is the preferred means of conversing. Synchronous virtual reference, similar to other synchronous means of communication, is an important method for reaching students and for providing teaching and learning…

Handbook of the Economics of Education. Volume 2

Science.gov (United States)

Hanushek, Erik A., Ed.; Welch, F., Ed.

2006-01-01

The Handbooks in Economics series continues to provide the various branches of economics with handbooks which are definitive reference sources, suitable for use by professional researchers, advanced graduate students, or by those seeking a teaching supplement. With contributions from leading researchers, each Handbook presents an accurate,…

Understanding and Working with Attention Deficit Disorder Students

Science.gov (United States)

Buttery, Thomas J.

2009-01-01

From a holistic perspective the term attention refers to a student's capacity to focus, direct and sustain their attention on a particular stimulus within their environment for a significant period of time. The development of students' attention spans develops progressively from the time they enter school. From the beginning some students have…

Survey of reference materials for trace elements, nuclides and organic microcontaminants

International Nuclear Information System (INIS)

Parr, R.M.; Stone, S.F.; Bel-Amakeletch, T.; Zeisler, R.

1998-01-01

The International Atomic Energy Agency (IAEA), in co-operation with the United Nations Environment Programme (UNEP), has recently prepared a survey on internationally available analytical reference materials for trace elements, nuclides and organic contaminants in biological, environmental and related matrices. The purpose is to help analysts to select reference materials for quality assurance that match as closely as possible, with respect to matrix type and concentrations of the measurands of interest, the ''real'' samples that are to be measured. The present version of the survey, which is available in the form of two cost-free printed volumes [1], contains over 10,000 certified and information values in 650 reference materials from 27 different producers. The 455 measurands listed include trace elements, major and minor elements, organic contaminants, organometallic compounds, radionuclides and stable isotopes. Currently, the database from which the survey has been produced is being modified and extended so as to make the data available in electronic form via the Internet. (orig.)

Technology, safety and costs of decommissioning a reference small mixed oxide fuel fabrication plant. Volume 2. Appendices

Energy Technology Data Exchange (ETDEWEB)

Jenkins, C. E.; Murphy, E. S.; Schneider, K. J.

1979-01-01

Volume 2 contains appendixes on small MOX fuel fabrication facility description, site description, residual radionuclide inventory estimates, decommissioning, financing, radiation dose methodology, general considerations, packaging and shipping of radioactive materials, cost assessment, and safety (JRD)

Biological and environmental reference materials for trace elements, nuclides and organic microcontaminants

International Nuclear Information System (INIS)

Cortes Toro, E.; Parr, R.M.; Clements, S.A.

1990-01-01

This report has been produced from a database on analytical reference materials of biological and environmental origin, which is maintained at the International Atomic Energy Agency. It is an updated version of an earlier report, published in 1985, which focussed mainly on reference materials for trace elements. In the present version of the report, reference materials for trace elements still constitute the major part of the data; however, information is also now included on a number of other selected analytes of relevance to IAEA programmes, i.e. radionuclides, stable isotopes and organic microcontaminants. The database presently contains 2,694 analyte values for 117 analytes in 116 biological and 77 environmental (non-biological) reference materials produced by 20 different suppliers. Additional information on the cost of the material, the unit size supplied, (weight or volume), and the minimum weight of material recommended for analysis is also provided (if available to the authors). It is expected that this report will help analysts to select the reference material that matches as closely as possible, with respect to matrix type and concentrations of the analytes of interest, the ''real'' samples that are to be analysed. Refs, 12 tabs

Digital chat reference in health science libraries: challenges in initiating a new service.

Science.gov (United States)

Dee, Cheryl R; Newhouse, Joshua D

2005-01-01

Digital reference service adds a valuable new dimension to health science reference services, but the road to implementation can present questions that require carefully considered decisions. This article incorporates suggestions from the published literature, provides tips from interviews with practicing academic health science librarians, and reports on data from students' exploration of academic health science library Web sites' digital reference services. The goal of this study is to provide guidelines to plan new services, assess user needs, and select software, and to showcase potential benefits of collaboration and proactive and user-friendly marketing. In addition, tips for successful operation and evaluation of services are discussed.

Realization of a reference system for the generation radon 222

International Nuclear Information System (INIS)

Guelin, M.

1990-11-01

After some general considerations on radon and its calibration techniques, the methods and technologies developed in order to realize a reference system for the generation of radon 222 are presented. Two original patented techniques have been developed. The former technique deals with the realization of radon 222 solid sources from radium 226 deposit on acrylic fibres. This new technology offers the advantage of very quickly obtaining a constant emission rate near to 100%. The latter technique deals with the standard measurement of radon 222 volumic activity via gamma spectrometry of its short-lived daughters. This new procedure is the only one allowing to relate this measure to gaseous standards. An aeraulic/ventilation circuit makes it possible to calibrate the radon measurement instrumentation within a wide volumic activity range from to 4 to 4 000 Bq/m 3

Subseabed disposal program annual report, January-December 1980. Volume II. Appendices (principal investigator progress reports). Part 1

International Nuclear Information System (INIS)

Hinga, K.R.

1981-07-01

Volume II of the sixth annual report describing the progress and evaluating the status of the Subseabed Disposal Program contains the appendices referred to in Volume I, Summary and Status. Because of the length of Volume II, it has been split into two parts for publication purposes. Part 1 contains Appendices A-Q; Part 2 contains Appendices R-MM. Separate abstracts have been prepared for each appendix for inclusion in the Energy Data Base

Subseabed disposal program annual report, January-December 1980. Volume II. Appendices (principal investigator progress reports). Part 1

Energy Technology Data Exchange (ETDEWEB)

Hinga, K.R. (ed.)

1981-07-01

Volume II of the sixth annual report describing the progress and evaluating the status of the Subseabed Disposal Program contains the appendices referred to in Volume I, Summary and Status. Because of the length of Volume II, it has been split into two parts for publication purposes. Part 1 contains Appendices A-Q; Part 2 contains Appendices R-MM. Separate abstracts have been prepared for each appendix for inclusion in the Energy Data Base.

Depression and College Students

Science.gov (United States)

... depression and other mental health issues? Reference Share Depression and College Students Download PDF Download ePub Order ... Answers to college students’ frequently asked questions about depression Feeling moody, sad, or grouchy? Who doesn’t ...

MR coronary angiography with breath-hold targeted volumes : Preliminary clinical results

NARCIS (Netherlands)

van Geuns, R J; Wielopolski, P A; de Bruin, Hein G.; Rensing, B J; Hulshoff, Marc; van Ooijen, P M; de Feyter, P J; Oudkerk, M

2000-01-01

PURPOSE: To assess the clinical value of a magnetic resonance (MR) coronary angiography strategy involving a small targeted volume to image one coronary segment in a single breath hold for the detection of greater than 50% stenosis. MATERIALS AND METHODS: Thirty-eight patients referred for elective

Student Approaches to Learning and Studying. Research Monograph.

Science.gov (United States)

Biggs, John B.

A common thread in contemporary research in student learning refers to the ways in which students go about learning. A theory of learning is presented that accentuates the interaction between the person and the situation. Research evidence implies a form of meta-cognition called meta-learning, the awareness of students of their own learning…

Staffing an Academic Reference Desk with Librarians is not Cost-effective. A Review of: Ryan, Susan M. “Reference Transactions Analysis: The Cost-effectiveness of Staffing a Traditional Academic Reference Desk.” Journal of Academic Librarianship 34.5 (2008: 389-99.

Directory of Open Access Journals (Sweden)

Cari Merkley

2009-06-01

categories derived by the researcher: look-up (a search for a known item, directional (library-specific orientation to the space and collections, technology (assistance with using library technology and electronic resources, and reference. The category of reference was further subdivided into eight additional categories: catalogue search, citation help, database help, “guide to correct databases,” “personal knowledge or referral,” “quick internet search,” research, and Serials Solutions (392. “Guide to correct databases” referred to advice on the appropriate database to answer a question and serials solutions included questions that could be answered using the Serials Solutions product, such as the availability of a particular journal or article in the collection (392. Questions were assigned to the single most appropriate category by the researcher. Question categories were then mapped to “suggested staffing levels” (396. This determination was made by the researcher, and no details were given as to how the decision was made for each category. The three levels of staffing discussed were librarian, “trained student or staff,” and “well-trained staff/occasional librarian referral” (396. The cost of staffing the reference desk during the eight months captured in this study was calculated by multiplying the hours worked by each librarian by his/her individual average rate of pay across the four data collection periods. Indirect staff costs such as benefits were not included in this calculation. The average cost per reference transaction was determined by dividing the total salary costs by the total number of reference queries during the periods of study. Costs for those categories of questions best addressed by a librarian could then be determined. The actual number of librarians who participated in the study is unclear. The methodology refers to four full-time and two part-time librarians (391. However, later in the article there is reference to

[Target volume margins for lung cancer: internal target volume/clinical target volume].

Science.gov (United States)

Jouin, A; Pourel, N

2013-10-01

The aim of this study was to carry out a review of margins that should be used for the delineation of target volumes in lung cancer, with a focus on margins from gross tumour volume (GTV) to clinical target volume (CTV) and internal target volume (ITV) delineation. Our review was based on a PubMed literature search with, as a cornerstone, the 2010 European Organisation for Research and Treatment of Cancer (EORTC) recommandations by De Ruysscher et al. The keywords used for the search were: radiotherapy, lung cancer, clinical target volume, internal target volume. The relevant information was categorized under the following headings: gross tumour volume definition (GTV), CTV-GTV margin (first tumoural CTV then nodal CTV definition), in field versus elective nodal irradiation, metabolic imaging role through the input of the PET scanner for tumour target volume and limitations of PET-CT imaging for nodal target volume definition, postoperative radiotherapy target volume definition, delineation of target volumes after induction chemotherapy; then the internal target volume is specified as well as tumoural mobility for lung cancer and respiratory gating techniques. Finally, a chapter is dedicated to planning target volume definition and another to small cell lung cancer. For each heading, the most relevant and recent clinical trials and publications are mentioned. Copyright © 2013. Published by Elsevier SAS.

Level of Skill Argued Students on Physics Material

Science.gov (United States)

Viyanti, V.; Cari, C.; Sunarno, W.; Prasetyo, Z. K.

2017-09-01

This study aims to analyze the prior knowledge of students to map the level of skills to argue floating and sinking material. Prior knowledge is the process of concept formation in cognitive processes spontaneously or based on student experience. The study population is high school students of class XI. The sample selection using cluster random sampling, obtained the number of sampel as many as 50 student. The research used descriptive survey method. The data were obtained through a multiple choice test both grounded and interviewed. The data analyzed refers to: alignment the concept and the activity of developing the skill of the argument. The result obtained by the average level of skill argue in terms of the prior knowladge of on “Level 2”. The data show that students have difficulty expressing simple arguments consisting of only one statement. This indicates a lack of student experience in cultivating argumentative skills in their learning. The skill level mapping argued in this study to be a reference for researchers to provide feedback measures to obtain positive change in cognitive conflict argued.

Three-dimensional ultrasonography using the VOCAL technique for estimation of reference range between 7 and 11 weeks embryonic volume

Directory of Open Access Journals (Sweden)

Hassan Mostafa Gaafar

2013-06-01

Conclusion: This study demonstrated that embryonic/fetal volume is a good predictor of gestational age with a power regression equation (y = 52.22 + 6.5 x for the period from 7 to 10 weeks + 6 days. We suggest using the embryo volume as an early evidence of growth restriction in high risk pregnancy.

Data Mining Foundations and Intelligent Paradigms Volume 2 Statistical, Bayesian, Time Series and other Theoretical Aspects

CERN Document Server

Jain, Lakhmi

2012-01-01

Data mining is one of the most rapidly growing research areas in computer science and statistics. In Volume 2 of this three volume series, we have brought together contributions from some of the most prestigious researchers in theoretical data mining. Each of the chapters is self contained. Statisticians and applied scientists/ engineers will find this volume valuable. Additionally, it provides a sourcebook for graduate students interested in the current direction of research in data mining.

Errors during MRT measurements of the left ventricular volume using a multi-slice technique

International Nuclear Information System (INIS)

Pitton, M.B.; Just, M.; Grebe, P.; Kreitner, K.F.; Erbel, R.; Thelen, M.

1992-01-01

A multi-slice technique for MRT measurements of the left ventricular volume is much faster than the use of single-slice methods and is therefore better tolerated, leaving time for additional measurements. The end-diastolic left ventricular volume can be reliably measured by this method (123.3±13.5 ml vs. 124.1±ml). The end-systolic volume is consistently overestimated by 23.7±18,3% compared with the reference value obtained by single slice measurements (47.9±8.9 ml vs 39.1±7.9 ml). Correspondingly, stroke volume and ejection fraction is underestimated on average by 10.6±9.7% and 10.6±7.6% respectively). (orig.) [de

Tertiary Students and Social Development: An Area for Direct Action--Student Rural Service Activities in Malaysia.

Science.gov (United States)

Kong, Kee Poo

The study is a survey of the different kinds of voluntary rural service (service-learning) corps of students from the institutions of higher education in Malaysia. The history, organization, and activities of the service corps are examined, and this type of student social action is viewed with reference to the role of higher education in the…

Navigator channel adaptation to reconstruct three dimensional heart volumes from two dimensional radiotherapy planning data

International Nuclear Information System (INIS)

Ng, Angela; Nguyen, Thao-Nguyen; Moseley, Joanne L; Hodgson, David C; Sharpe, Michael B; Brock, Kristy K

2012-01-01

Biologically-based models that utilize 3D radiation dosimetry data to estimate the risk of late cardiac effects could have significant utility for planning radiotherapy in young patients. A major challenge arises from having only 2D treatment planning data for patients with long-term follow-up. In this study, we evaluate the accuracy of an advanced deformable image registration (DIR) and navigator channels (NC) adaptation technique to reconstruct 3D heart volumes from 2D radiotherapy planning images for Hodgkin's Lymphoma (HL) patients. Planning CT images were obtained for 50 HL patients who underwent mediastinal radiotherapy. Twelve image sets (6 male, 6 female) were used to construct a male and a female population heart model, which was registered to 23 HL 'Reference' patients' CT images using a DIR algorithm, MORFEUS. This generated a series of population-to-Reference patient specific 3D deformation maps. The technique was independently tested on 15 additional 'Test' patients by reconstructing their 3D heart volumes using 2D digitally reconstructed radiographs (DRR). The technique involved: 1) identifying a matching Reference patient for each Test patient using thorax measurements, 2) placement of six NCs on matching Reference and Test patients' DRRs to capture differences in significant heart curvatures, 3) adapting the population-to-Reference patient-specific deformation maps to generate population-to-Test patient-specific deformation maps using linear and bilinear interpolation methods, 4) applying population-to-Test patient specific deformation to the population model to reconstruct Test-patient specific 3D heart models. The percentage volume overlap between the NC-adapted reconstruction and actual Test patient's true heart volume was calculated using the Dice coefficient. The average Dice coefficient expressed as a percentage between the NC-adapted and actual Test model was 89.4 ± 2.8%. The modified NC adaptation

Prevalence of underweight, overweight and obesity in university students from the region of Anhui (China).

Science.gov (United States)

Ren, Xiaohua; Chen, Yan; He, Lianping; Jin, Yuelong; Tian, Li; Lu, Mi; Lu, Wei; Ding, Lingling; Guo, Daoxia; Wang, Linghong; Nie, Zhognhua; Yao, Yingshui

2014-12-16

Overweight and obesity are epidemic worldwide. Our previous study found that the prevalence of overweight and obesity in primary students is high. we sought to estimate whether the prevalence of overweight and obesity among university students is still high in China. A cross-sectional study was designed to collect the routine health screening data for university students in 2013. The height and weight of students were measured, and BMI was calculated with height and weight, we estimated the underweight and obesity prevalence of university students using by two references [Working Group on Obesity references in China (2004) and World Health Organization (WHO) criteria (2000)]. Depending on the China references used, the overall prevalence of underweight, overweight (including obesity) and obesity in male university students were 14.2%, 14.7% and 4.2%, respectively; in female university students were 27.5%, 4.4% and 0.6%, respectively. Depending on the WHO references used, the overall prevalence of underweight, overweight (including obesity) and obesity in male university students were 14.2%, 11.5% and 2.5%, respectively, in female university students were 27.5%, 2.4% and 0.3%, respectively. An interesting observation made was that the underweight prevalence of university students has an increasing trend, especially in female. The study showed that the prevalence of underweight in university students, especially in female students has become a critical health issue. Related department of school and government should pay more attention to student's physical health. Copyright AULA MEDICA EDICIONES 2014. Published by AULA MEDICA. All rights reserved.

School Uniform Policies: Students' Views of Effectiveness.

Science.gov (United States)

McCarthy, Teresa M.; Moreno, Josephine

2001-01-01

Focus-group interviews of New York City middle-school students about their perceptions of the effectiveness of the school-uniform policy. Finds that students' perceptions of the effects of school-uniform policy on school culture varied considerably with those intended by the principal. (Contains 40 references.) (PKP)

Promoting Student Engagement. Volume 2: Activities, Exercises and Demonstrations for Psychology Courses

Science.gov (United States)

Miller, Richard L., Ed.; Balcetis, Emily, Ed.; Burns, Susan R., Ed.; Daniel, David B., Ed.; Saville, Bryan K., Ed.; Woody, William Douglas, Ed.

2011-01-01

The purpose of the book is to provide teachers of psychology access to teaching techniques that epitomize "happy tact and ingenuity." The principle influence that teachers have on student behavior occurs in the classroom since, as noted by Erickson and Strommer, (1991), today's students spend relatively little time studying outside of class. When…

General expressions for the volume of organs in the MIRD-phantom and their use to arrive at an Indian ''reference'' man

International Nuclear Information System (INIS)

Shiv Datta

1982-01-01

The general expressions for the volume of body organs have been developed, when their equations are assumed to be of the same form as in the MIRD phantom. Scaling down is then carried out by introducing factors based on the average weight and height of a group of Indian adult males (workers in various units of Department of Atomic Energy, India). The general expressions for the volume of the body organs will be found handy to use when the actual data of the organs (ratios of the lengths of their axes and the volumes) become available. (author)

Lung volume recruitment in multiple sclerosis.

Directory of Open Access Journals (Sweden)

Nadim Srour

Full Text Available INTRODUCTION: Pulmonary function abnormalities have been described in multiple sclerosis including reductions in forced vital capacity (FVC and cough but the time course of this impairment is unknown. Peak cough flow (PCF is an important parameter for patients with respiratory muscle weakness and a reduced PCF has a direct impact on airway clearance and may therefore increase the risk of respiratory tract infections. Lung volume recruitment is a technique that improves PCF by inflating the lungs to their maximal insufflation capacity. OBJECTIVES: Our goals were to describe the rate of decline of pulmonary function and PCF in patients with multiple sclerosis and describe the use of lung volume recruitment in this population. METHODS: We reviewed all patients with multiple sclerosis referred to a respiratory neuromuscular rehabilitation clinic from February 1999 until December 2010. Lung volume recruitment was attempted in patients with FVC <80% predicted. Regular twice daily lung volume recruitment was prescribed if it resulted in a significant improvement in the laboratory. RESULTS: There were 79 patients included, 35 of whom were seen more than once. A baseline FVC <80% predicted was present in 82% of patients and 80% of patients had a PCF insufficient for airway clearance. There was a significant decline in FVC (122.6 mL/y, 95% CI 54.9-190.3 and PCF (192 mL/s/y, 95% 72-311 over a median follow-up time of 13.4 months. Lung volume recruitment was associated with a slower decline in FVC (p<0.0001 and PCF (p = 0.042. CONCLUSION: Pulmonary function and cough decline significantly over time in selected patients with multiple sclerosis and lung volume recruitment is associated with a slower rate of decline in lung function and peak cough flow. Given design limitations, additional studies are needed to assess the role of lung volume recruitment in patients with multiple sclerosis.

Grouting applications in civil engineering. Volume I and II. [800 references

Energy Technology Data Exchange (ETDEWEB)

Einstein, H.H.; Barvenik, M.J.

1975-01-01

A comprehensive description of grouting applications in civil engineering is presented that can serve as a basis for the selection of grouting methods in the borehole sealing problem. The breadth and depth of the study was assured by conducting the main part of the review, the collection and evaluation of information, without specifically considering the borehole sealing problem (but naturally incorporating any aspect of civil engineering applications that could be of potential use). Grouting is very much an art and not a science. In most cases, it is a trial and error procedure where an inexpensive method is initially tried and then a more expensive one is used until the desired results are obtained. Once a desired effect is obtained, it is difficult to credit any one procedure with the success because the results are due to the summation of all the methods used. In many cases, the method that proves successful reflects a small abnormality in the ground or structure rather than its overall characteristics. Hence, successful grouting relies heavily on good engineering judgement and experience, and not on a basic set of standard correlations or equations. 800 references. (JRD)

The relationship between obesity and forced vital capacity among university students.

Science.gov (United States)

Sun, Xugui; Chen, Xiaohong

2015-05-01

We sought to explore the relationship between vital capacity and obesity among university students in China. A cross-sectional study was designed to collect the routine health screening data for university students in 2013. The height, weight and force vital capacity of students were measured, and BMI was calculated with height and weight, so as to estimate the relationship between force vital capacity and obesity. Based on Working Group on Obesity references in China, obesity has a higher force vital capacity in both male and female university students. No correlation was found between vital capacity and BMI. obesity may have effect on pulmonary function among university students, which is a reference for further epidemic study. Copyright AULA MEDICA EDICIONES 2014. Published by AULA MEDICA. All rights reserved.

How to improve the program for Japanese Studies Students

OpenAIRE

澤田, 田津子

2010-01-01

Japanese Studies Students (=international students who specialize in Japanese language and culture in Japan; Hereafter referred to as J.students) show a variety of language skill and interests depending on the features of education in Japanese in their respective countries. All the J.students, however, receive an education at our university for one year based on one education program for the J.students. This paper shows first the variety of J.students through analysis of their final theses of...

Increased Severe Trauma Patient Volume is Associated With Survival Benefit and Reduced Total Health Care Costs: A Retrospective Observational Study Using a Japanese Nationwide Administrative Database.

Science.gov (United States)

Endo, Akira; Shiraishi, Atsushi; Fushimi, Kiyohide; Murata, Kiyoshi; Otomo, Yasuhiro

2017-06-07

The aim of this study was to evaluate the associations of severe trauma patient volume with survival benefit and health care costs. The effect of trauma patient volume on survival benefit is inconclusive, and reports on its effects on health care costs are scarce. We conducted a retrospective observational study, including trauma patients who were transferred to government-approved tertiary emergency hospitals, or hospitals with an intensive care unit that provided an equivalent quality of care, using a Japanese nationwide administrative database. We categorized hospitals according to their annual severe trauma patient volumes [1 to 50 (reference), 51 to 100, 101 to 150, 151 to 200, and ≥201]. We evaluated the associations of volume categories with in-hospital survival and total cost per admission using a mixed-effects model adjusting for patient severity and hospital characteristics. A total of 116,329 patients from 559 hospitals were analyzed. Significantly increased in-hospital survival rates were observed in the second, third, fourth, and highest volume categories compared with the reference category [94.2% in the highest volume category vs 88.8% in the reference category, adjusted odds ratio (95% confidence interval, 95% CI) = 1.75 (1.49-2.07)]. Furthermore, significantly lower costs (in US dollars) were observed in the second and fourth categories [mean (standard deviation) for fourth vs reference = $17,800 ($17,378) vs $20,540 ($32,412), adjusted difference (95% CI) = -$2559 (-$3896 to -$1221)]. Hospitals with high volumes of severe trauma patients were significantly associated with a survival benefit and lower total cost per admission.

Determining optimal parameters of the self-referent encoding task: A large-scale examination of self-referent cognition and depression.

Science.gov (United States)

Dainer-Best, Justin; Lee, Hae Yeon; Shumake, Jason D; Yeager, David S; Beevers, Christopher G

2018-06-07

Although the self-referent encoding task (SRET) is commonly used to measure self-referent cognition in depression, many different SRET metrics can be obtained. The current study used best subsets regression with cross-validation and independent test samples to identify the SRET metrics most reliably associated with depression symptoms in three large samples: a college student sample (n = 572), a sample of adults from Amazon Mechanical Turk (n = 293), and an adolescent sample from a school field study (n = 408). Across all 3 samples, SRET metrics associated most strongly with depression severity included number of words endorsed as self-descriptive and rate of accumulation of information required to decide whether adjectives were self-descriptive (i.e., drift rate). These metrics had strong intratask and split-half reliability and high test-retest reliability across a 1-week period. Recall of SRET stimuli and traditional reaction time (RT) metrics were not robustly associated with depression severity. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

A new electric method for non-invasive continuous monitoring of stroke volume and ventricular volume-time curves

Directory of Open Access Journals (Sweden)

Konings Maurits K

2012-08-01

Full Text Available Abstract Background In this paper a new non-invasive, operator-free, continuous ventricular stroke volume monitoring device (Hemodynamic Cardiac Profiler, HCP is presented, that measures the average stroke volume (SV for each period of 20 seconds, as well as ventricular volume-time curves for each cardiac cycle, using a new electric method (Ventricular Field Recognition with six independent electrode pairs distributed over the frontal thoracic skin. In contrast to existing non-invasive electric methods, our method does not use the algorithms of impedance or bioreactance cardiography. Instead, our method is based on specific 2D spatial patterns on the thoracic skin, representing the distribution, over the thorax, of changes in the applied current field caused by cardiac volume changes during the cardiac cycle. Since total heart volume variation during the cardiac cycle is a poor indicator for ventricular stroke volume, our HCP separates atrial filling effects from ventricular filling effects, and retrieves the volume changes of only the ventricles. Methods ex-vivo experiments on a post-mortem human heart have been performed to measure the effects of increasing the blood volume inside the ventricles in isolation, leaving the atrial volume invariant (which can not be done in-vivo. These effects have been measured as a specific 2D pattern of voltage changes on the thoracic skin. Furthermore, a working prototype of the HCP has been developed that uses these ex-vivo results in an algorithm to decompose voltage changes, that were measured in-vivo by the HCP on the thoracic skin of a human volunteer, into an atrial component and a ventricular component, in almost real-time (with a delay of maximally 39 seconds. The HCP prototype has been tested in-vivo on 7 human volunteers, using G-suit inflation and deflation to provoke stroke volume changes, and LVot Doppler as a reference technique. Results The ex-vivo measurements showed that ventricular filling

Non-Euclidean geometry and curvature two-dimensional spaces, volume 3

CERN Document Server

Cannon, James W

2017-01-01

This is the final volume of a three volume collection devoted to the geometry, topology, and curvature of 2-dimensional spaces. The collection provides a guided tour through a wide range of topics by one of the twentieth century's masters of geometric topology. The books are accessible to college and graduate students and provide perspective and insight to mathematicians at all levels who are interested in geometry and topology. Einstein showed how to interpret gravity as the dynamic response to the curvature of space-time. Bill Thurston showed us that non-Euclidean geometries and curvature are essential to the understanding of low-dimensional spaces. This third and final volume aims to give the reader a firm intuitive understanding of these concepts in dimension 2. The volume first demonstrates a number of the most important properties of non-Euclidean geometry by means of simple infinite graphs that approximate that geometry. This is followed by a long chapter taken from lectures the author gave at MSRI, wh...

Teaching Ethos of Reference Professors

Directory of Open Access Journals (Sweden)

Jules Marcel

2018-03-01

Full Text Available The present article discusses the teaching ethos of professors who are recognized for their good practice as trainers. The aim of our study is to analyze the influences of such professors’ professional constitution, as well as the explicit and/or tacit teaching knowledge they mobilize in their teaching practices. Based on Shulman, Gauthier, Tardif and Polanyi, we conducted interviews with three professors described by their students as reference. They were also observed in their classes, in the context of an undergraduate program in pedagogy at a public university. Data show similarities between the practices of the investigated professors, as well as a consistent description of their didactics, which is marked by intellective, moral, emotional and behavioral features.

227 Home Economics Students' Perception of the Relevance of ...

African Journals Online (AJOL)

Nekky Umera

The purpose of this research work was to appraise Home Economics students' ... 300 and 400 levels Home Economics students enrolled in Delta State. University in the 2008 .... References. Anyakoha, E. ... Spectrum Book Ltd. Oladokun, A.

Sensors, Volume 1, Fundamentals and General Aspects

Science.gov (United States)

Grandke, Thomas; Ko, Wen H.

1996-12-01

'Sensors' is the first self-contained series to deal with the whole area of sensors. It describes general aspects, technical and physical fundamentals, construction, function, applications and developments of the various types of sensors. This volume deals with the fundamentals and common principles of sensors and covers the wide areas of principles, technologies, signal processing, and applications. Contents include: Sensor Fundamentals, e.g. Sensor Parameters, Modeling, Design and Packaging; Basic Sensor Technologies, e.g. Thin and Thick Films, Integrated Magnetic Sensors, Optical Fibres and Intergrated Optics, Ceramics and Oxides; Sensor Interfaces, e.g. Signal Processing, Multisensor Signal Processing, Smart Sensors, Interface Systems; Sensor Applications, e.g. Automotive: On-board Sensors, Traffic Surveillance and Control, Home Appliances, Environmental Monitoring, etc. This volume is an indispensable reference work and text book for both specialits and newcomers, researchers and developers.

Perspectives on Student Development. New Directions for Community Colleges, Number 67.

Science.gov (United States)

Deegan, William L., Ed.; O'Banion, Terry, Ed.

1989-01-01

This collection of articles examines the history of student development practices, reviews key issues that have emerged in the field, and proposes paths of action for the future. The volume includes: (1) "Student Development Philosophy: A Perspective on the Past and Future," by Terry O'Banion, which reviews the history of student development; (2)…

Student Motivation, Attitude, and Approach to Learning: Notes from a Novice Teacher.

Science.gov (United States)

Vivaldo-Lima, Eduardo

2001-01-01

Describes what young professors can do considering student motivation, learning styles, and instructional effectiveness to improve student learning. Lists recommendations from experts on how to improve student learning. Includes 25 references. (Author/YDS)

Savannah River Site mixed waste Proposed Site Treatment Plan (PSTP). Volumes 1 and 2 and reference document: Revision 2

International Nuclear Information System (INIS)

Helmich, E.; Noller, D.K.; Wierzbicki, K.S.; Bailey, L.L.

1995-01-01

The DOE is required by the Resource Conservation and Recovery Act to prepare site treatment plans describing the development of treatment capacities and technologies for treating mixed waste. This proposed plan contains Savannah River Site's preferred options and schedules for constructing new facilities, and otherwise obtaining treatment for mixed wastes. The proposed plan consists of 2 volumes. Volume 1, Compliance Plan, identifies the capacity to be developed and the schedules as required. Volume 2, Background, provides a detailed discussion of the preferred options with technical basis, plus a description of the specific waste streams. Chapters are: Introduction; Methodology; Mixed low level waste streams; Mixed transuranic waste; High level waste; Future generation of mixed waste streams; Storage; Process for evaluation of disposal issues in support of the site treatment plans discussions; Treatment facilities and treatment technologies; Offsite waste streams for which SRS treatment is the Preferred Option (Naval reactor wastes); Summary information; and Acronyms and glossary. This revision does not contain the complete revised report, but only those pages that have been revised

Students´ Knowledge about Nanotechnology and the Importance to ...

African Journals Online (AJOL)

The primary objective of this study was to find out what students already know about nanotechnology in order to design a context based module with a nanotechnology background. Therefore a questionnaire was distributed to 116 German students in grade 11. Questions referred to the first thought of the students´ mind ...

The Association between Learning Preferences and Preferred Methods of Assessment of Dental Students

Science.gov (United States)

Buchanan, Phil

2016-01-01

This study is designed to gather information concerning a possible relationship between how dental students prefer to take in and communicate new information and how they prefer to be assessed. Though there are numerous references in the literature regarding the learning styles of students there are also references to the inaccuracy of such…

Non-invasive assessment of peripheral arterial disease: Automated ankle brachial index measurement and pulse volume analysis compared to duplex scan.

Science.gov (United States)

Lewis, Jane Ea; Williams, Paul; Davies, Jane H

2016-01-01

This cross-sectional study aimed to individually and cumulatively compare sensitivity and specificity of the (1) ankle brachial index and (2) pulse volume waveform analysis recorded by the same automated device, with the presence or absence of peripheral arterial disease being verified by ultrasound duplex scan. Patients (n=205) referred for lower limb arterial assessment underwent ankle brachial index measurement and pulse volume waveform recording using volume plethysmography, followed by ultrasound duplex scan. The presence of peripheral arterial disease was recorded if ankle brachial index 50% was evident with ultrasound duplex scan. Outcome measure was agreement between the measured ankle brachial index and interpretation of pulse volume waveform for peripheral arterial disease diagnosis, using ultrasound duplex scan as the reference standard. Sensitivity of ankle brachial index was 79%, specificity 91% and overall accuracy 88%. Pulse volume waveform sensitivity was 97%, specificity 81% and overall accuracy 85%. The combined sensitivity of ankle brachial index and pulse volume waveform was 100%, specificity 76% and overall accuracy 85%. Combining these two diagnostic modalities within one device provided a highly accurate method of ruling out peripheral arterial disease, which could be utilised in primary care to safely reduce unnecessary secondary care referrals.

Apparent molar volumes and compressibilities of selected electrolytes in dimethylsulfoxide

International Nuclear Information System (INIS)

Warminska, Dorota; Grzybkowski, Waclaw

2010-01-01

Densities at T = (293.15, 298.15, 303.15, 313.15, 323.15, and 333.15) K and sound velocities at T = 298.15 K of tetraphenylphosphonium bromide, sodium tetraphenylborate, sodium bromide, and sodium perchlorate in dimethylsulfoxide have been measured over the composition range from (0 to 0.3) mol . kg -1 . From these data, apparent molar volumes and apparent molar isentropic compressibilities at infinite dilution as well as the expansibilities have been evaluated. The results have been discussed in terms of employing tetraphenylphosphonium tetraphenylborate as a reference electrolyte in splitting the limiting apparent molar volumes and apparent molar isentropic compressibilities into ionic contributions.

The Effect of Volume of Transaction On The Intention Towards Tax E-filing

OpenAIRE

Aziz Saliza Abdul; Idris Kamil Md

2017-01-01

Volume of transaction is specifically referring to number of clients or return forms dealing by tax agents/preparers. This variable does play role even though there is less empirical evidence on this matter. This paper is basically to explore the effect of volume of transaction that could possibly influence the acceptance of tax e-filing system as it did in other areas of transaction i.e. court cases. Undoubtedly, it is proved to be significantly influenced the behavioural intention towards t...

Technology, Safety and Costs of Decommissioning a Reference Low-Level Waste Burial Ground. Appendices

International Nuclear Information System (INIS)

None

1980-01-01

Safety and cost information are developed for the conceptual decommissioning of commercial low-level waste (LLW) burial grounds. Two generic burial grounds, one located on an arid western site and the other located on a humid eastern site, are used as reference facilities for the study. The two burial grounds are assumed to have the same site capacity for waste, the same radioactive waste inventory, and similar trench characteristics and operating procedures. The climate, geology. and hydrology of the two sites are chosen to be typical of real western and eastern sites. Volume 2 (Appendices) contains the detailed analyses and data needed to support the results given in Volume 1.

Internet Censorship in Turkey: University Students' Opinions

Science.gov (United States)

Ozkan, Hasan; Arikan, Arda

2009-01-01

The aim of this paper is to study university students' opinions toward online censorship with references to their socio-political and economic variables. Considering the upwards trend and the increasing number of online restrictions in Turkey, the opinions of university students (n=138) are thought to give significant findings. The questionnaire…

[Testis volume, pubic hair development and spermarcheal age in urban Chinese boys].

Science.gov (United States)

Hua-mei, M A

2010-06-01

There is a trend that puberty is starting earlier in the 21st century, which is primarily based on studies of girls. The assessment of pubertal stages in the individual child is useful only if recent and reliable reference data from the same population are available for comparison. However, nationally representative pubertal data for Chinese boys in China are lacking. The aim of this study was to investigate the current pubertal development in healthy urban Chinese boys. A cross-sectional study of the pubertal development of a sample of 19,054 urban Chinese boys aged 3 - 19.83 years was conducted between 2003 and 2005. Testicular volume was determined with a Prader orchidometer. Pubic hair development was assessed according to the Tanner method. Data on spermarche were collected by the status quo method. Probit analysis was used to calculate the median age and 95% CI for onset of testicular and pubic hair development and spermarche. A testicular volume greater than or equal to 4 ml was taken as a definite sign of the onset of puberty. Mean ages for sexual development in boys were compared with other published series, while the spermarcheal age was compared to those in the similar population of the five National Surveys on Students Constitution and Health undertaken since 1979 in China. At the age of 9 years, 12.99% of the boys had a testicular volume 4 ml or more. The median age of onset of puberty as indicated by a testicular volume of 4 ml or more was 10.55 (95% CI 10.27 - 10.79) years. The median age for onset of pubic hair development (PH(2)) and spermarche was 12.78 (95% CI 12.67 - 12.89) years and 14.05 (95%CI 13.80 - 14.32) years, respectively. There was a highly significant downward secular trend for spermarcheal age of Chinese boys since 1979. Pubertal onset as indicated by testicular development in urban Chinese boys is earlier than currently used norms. Age of testicular development is among the earliest medians recorded in the world population, while

The WSTIAC Quarterly. Volume 9, Number 4

Science.gov (United States)

2010-04-28

elements of command– Major Eric D. Trias Captain Bryan M. Bell US Air Force You have to know the past to understand the present. — Carl Sagan This article is...Quarterly, Volume 9, Number 4 3 INTRODUCTION Carl von Clausewitz defined war as “…an act of violence intended to compel our opponent to fulfill our will...controlled systems. NOTES & REFERENCES ‡ Joint Pub 3-13 provides the doctrinal foundation for the conduct of IO in joint operations. [1] von Clausewitz, Carl

Systems analysis programs for hands-on integrated reliability evaluations (SAPHIRE) version 5.0, technical reference manual

International Nuclear Information System (INIS)

Russell, K.D.; Atwood, C.L.; Galyean, W.J.; Sattison, M.B.; Rasmuson, D.M.

1994-07-01

The Systems Analysis Programs for Hands-on Integrated Reliability Evaluations (SAPHIRE) refers to a set of several microcomputer programs that were developed to create and analyze probabilistic risk assessments (PRAs), primarily for nuclear power plants. This volume provides information on the principles used in the construction and operation of Version 5.0 of the Integrated Reliability and Risk Analysis System (IRRAS) and the System Analysis and Risk Assessment (SARA) system. It summarizes the fundamental mathematical concepts of sets and logic, fault trees, and probability. This volume then describes the algorithms that these programs use to construct a fault tree and to obtain the minimal cut sets. It gives the formulas used to obtain the probability of the top event from the minimal cut sets, and the formulas for probabilities that are appropriate under various assumptions concerning repairability and mission time. It defines the measures of basic event importance that these programs can calculate. This volume gives an overview of uncertainty analysis using simple Monte Carlo sampling or Latin Hypercube sampling, and states the algorithms used by these programs to generate random basic event probabilities from various distributions. Further references are given, and a detailed example of the reduction and quantification of a simple fault tree is provided in an appendix

$158 per Quart: The Value of a Volume of Coins

Science.gov (United States)

Kcenich, Stephen; Boss'e, Michael J.

2008-01-01

The ubiquitous change jar (or any other container) is the focus of this investigation. Using random pocket change, a distribution is determined and statistical tools are employed to calculate the value of given volumes of coins. This brief investigation begins by considering money, which piques the interest of most students, and uses this…

Survey of college students' MP3 listening: Habits, safety issues, attitudes, and education.

Science.gov (United States)

Hoover, Alicia; Krishnamurti, Sridhar

2010-06-01

To survey listening habits and attitudes of typical college students who use MP3 players and to investigate possible safety issues related to MP3 player listening. College students who were frequent MP3 player users (N = 428) filled out a 30-item online survey. Specific areas probed by the present survey included frequency and duration of MP3 player use, MP3 player volume levels used, types of earphones used, typical environments in which MP3 player was worn, specific activities related to safety while listening to MP3 players, and attitudes toward MP3 player use. The majority of listeners wore MP3 players for less than 2 hr daily at safe volume levels. About one third of respondents reported being distracted while wearing an MP3 player, and more than one third of listeners experienced soreness in their ears after a listening session. About one third of respondents reported occasionally using their MP3 players at maximum volume levels. Listeners indicated willingness to (a) reduce volume levels, (b) decrease listening duration, and (c) buy specialized earphones to conserve their hearing. The study found concerns regarding the occasional use of MP3 players at full volume and reduced environmental awareness among some college student users.

Use of an iPad App to simulate pressure-volume loops and cardiovascular physiology.

Science.gov (United States)

Leisman, Staci; Burkhoff, Daniel

2017-09-01

The purpose of this laboratory exercise is to model the changes in preload, afterload, and contractility on a simulated pressure-volume loop and to correlate those findings with common measurements of clinical cardiovascular physiology. Once students have modeled these changes on a healthy heart, the students are asked to look at a simulated case of cardiogenic shock. Effects on preload, contractility, and afterload are explored, as well as the hemodynamic effects of a number of student-suggested treatment strategies. Copyright © 2017 the American Physiological Society.

How To Tutor Students with Reading Comprehension Problems.

Science.gov (United States)

Parker, Richard; Hasbrouck, Jan E.; Denton, Carolyn

2002-01-01

Suggestions for tutoring students with reading comprehension problems include careful selection of books with readable text segments, use of comprehension strategies such as paraphrasing brief sections, and reading to find specific information. Several reading comprehension strategies for students are summarized. (Contains 7 references.) (DB)

Mental Health Issues and Students with Emotional and Behavioral Disorders

Science.gov (United States)

DeLoach, Kendra P.; Dvorsky, Melissa; Miller, Elaine; Paget, Michael

2012-01-01

Students with emotional and behavioral challenges are significantly impacted by mental health issues. Teachers and other school staff need mental health knowledge to work more effectively with these students. Collaboration with mental health professionals and sharing of information is essential. [For complete volume, see ED539318.

Drinking at European universities? A review of students' alcohol use

NARCIS (Netherlands)

Wicki, M.; Kuntsche, E.N.; Gmel, G.

2010-01-01

Background: High volumes of alcohol consumption and risky single occasion drinking (RSOD) among university students have been shown to be associated with considerable harm to both those who consume alcohol and their fellow students. The vast majority of these studies are based on US and Canadian

How Should Students Learn in the School Science Laboratory? The Benefits of Cooperative Learning

Science.gov (United States)

Raviv, Ayala; Cohen, Sarit; Aflalo, Ester

2017-07-01

Despite the inherent potential of cooperative learning, there has been very little research into its effectiveness in middle school laboratory classes. This study focuses on an empirical comparison between cooperative learning and individual learning in the school science laboratory, evaluating the quality of learning and the students' attitudes. The research included 67 seventh-grade students who undertook four laboratory experiments on the subject of "volume measuring skills." Each student engaged both in individual and cooperative learning in the laboratory, and the students wrote individual or group reports, accordingly. A total of 133 experiment reports were evaluated, 108 of which also underwent textual analysis. The findings show that the group reports were superior, both in terms of understanding the concept of "volume" and in terms of acquiring skills for measuring volume. The students' attitudes results were statistically significant and demonstrated that they preferred cooperative learning in the laboratory. These findings demonstrate that science teachers should be encouraged to implement cooperative learning in the laboratory. This will enable them to improve the quality and efficiency of laboratory learning while using a smaller number of experimental kits. Saving these expenditures, together with the possibility to teach a larger number of students simultaneously in the laboratory, will enable greater exposure to learning in the school science laboratory.

How Students' Beliefs about Their Intelligence Influence Their Academic Performance. Information Capsule. Volume 1012

Science.gov (United States)

Blazer, Christie

2011-01-01

Students' academic success may be influenced not only by their actual ability, but also by their beliefs about their intelligence. Studies have found that students enter a classroom with one of two distinct conceptions of their intellectual ability: some students believe their intelligence is expandable (growth mindset), while others believe their…

The right frame of reference makes it simple: an example of introductory mechanics supported by video analysis of motion

International Nuclear Information System (INIS)

Klein, P; Gröber, S; Kuhn, J; Fleischhauer, A; Müller, A

2015-01-01

The selection and application of coordinate systems is an important issue in physics. However, considering different frames of references in a given problem sometimes seems un-intuitive and is difficult for students. We present a concrete problem of projectile motion which vividly demonstrates the value of considering different frames of references. We use this example to explore the effectiveness of video-based motion analysis (VBMA) as an instructional technique at university level in enhancing students’ understanding of the abstract concept of coordinate systems. A pilot study with 47 undergraduate students indicates that VBMA instruction improves conceptual understanding of this issue. (paper)

The right frame of reference makes it simple: an example of introductory mechanics supported by video analysis of motion

Science.gov (United States)

Klein, P.; Gröber, S.; Kuhn, J.; Fleischhauer, A.; Müller, A.

2015-01-01

The selection and application of coordinate systems is an important issue in physics. However, considering different frames of references in a given problem sometimes seems un-intuitive and is difficult for students. We present a concrete problem of projectile motion which vividly demonstrates the value of considering different frames of references. We use this example to explore the effectiveness of video-based motion analysis (VBMA) as an instructional technique at university level in enhancing students’ understanding of the abstract concept of coordinate systems. A pilot study with 47 undergraduate students indicates that VBMA instruction improves conceptual understanding of this issue.

Addressing the Needs of Homeless Students.

Science.gov (United States)

Holloway, John H.

2003-01-01

Reviews studies on the plight and needs of homeless students. Includes reports on family mobility and school attendance, dysfunctional families, and school intervention strategies. (Contains 11 references.) (PKP)

Uncovering student ideas in physical science

CERN Document Server

Keeley, Page

2014-01-01

If you and your students can't get enough of a good thing, Volume 2 of Uncovering Student Ideas in Physical Science is just what you need. The book offers 39 new formative assessment probes, this time with a focus on electric charge, electric current, and magnets and electromagnetism. It can help you do everything from demystify electromagnetic fields to explain the real reason balloons stick to the wall after you rub them on your hair.

Impacts of Outer Continental Shelf (OCS) development on recreation and tourism. Volume 4. User's manual

Energy Technology Data Exchange (ETDEWEB)

1987-04-01

The final report for the project is presented in five volumes. The project sought to determine the impact of Outer Continental Shelf development on recreation and tourism in California. This volume is the User's Guide. It includes the following topics: Introduction and Summary Guide; Input Data Files; Gravity Model Programs; Economic Effects Model Programs; Consumer Surplus Model Programs; References; and Appendices.

Reference material for trace analysis by radioanalytical methods: Bowen's Kale

International Nuclear Information System (INIS)

Wainerdi, R.E.

1979-01-01

A fairly large volume of published data on 'Bowen's Kale' has been examined critically in order to develop recommendations for the use of this preparation as a 'reference material' in the standardisation and evaluation of the reliability of analytical procedures. Values are now recommended for the contents of twelve elements present in major to trace concentrations in 'Bowen's Kale'. 'Indicated values' for another 16 elements are provided. Values for 15 more elements are listed with no recommendation. The criteria adopted in categorising elements into these groups are discussed. (author)

Subseabed disposal program annual report, January-December 1979. Volume II. Appendices (principal investigator progress reports). Part 1 of 2

International Nuclear Information System (INIS)

Talbert, D.M.

1981-04-01

Volume II of the sixth annual report describing the progress and evaluating the status of the Subseabed Disposal Program contains the appendices referred to in Volume I, Summary and Status. Because of the length of Volume II, it has been split into two parts for publication purposes. Part 1 contains Appendices A-O; Part 2 contains Appendices P-FF. Separate abstracts have been prepared of each Appendix for inclusion in the Energy Data Base

Subseabed disposal program annual report, January-December 1979. Volume II. Appendices (principal investigator progress reports). Part 2 of 2

International Nuclear Information System (INIS)

Talbert, D.M.

1981-04-01

Volume II of the sixth annual report describing the progress and evaluating the status of the Subseabed Disposal Program contains the appendices referred to in Volume II, Summary and Status. Because of the length of Volume II, it has been split into two parts for publication purposes. Part 1 contains Appendices A-O; Part 2 contains Appendices P-FF. Separate abstracts have been prepared for each appendix for inclusion in the Energy Data Base

The 4M comPany: Make Mine Metric Marvels. Third Grade Student Booklet.

Science.gov (United States)

Hawaii State Dept. of Education, Honolulu.

This student activity manual for elementary students is designed to teach several metric units. Included are activities related to length (meter), volume (liter), mass (grams), and temperature (celsius). Activities include a variety of drill sheets interspersed with other activities. Cartoons are used extensively to appeal to student interests.…

New reference object for metrological performance testing of industrial CT systems

DEFF Research Database (Denmark)

Müller, Pavel; Hiller, Jochen; Cantatore, Angela

2012-01-01

This paper presents a new reference object, so called “CT ball plate”, used for metrological performance testing of industrial CT systems, and discusses both the calibration procedure using a tactile coordinate measuring machine and the first results carried out using an industrial CT scanner....... This artefact can be used to determine several characteristics of the CT system like, probing errors of spheres, length measuring errors between sphere centers, measurement errors in the whole CT volume and effects in connection with image artefacts....

Cognitive, Social, and Literacy Competencies: The Chelsea Bank Simulation Project. Year One: Final Report. [Volume 2]: Appendices.

Science.gov (United States)

Duffy, Thomas; And Others

This supplementary volume presents appendixes A-E associated with a 1-year study which determined what secondary school students were doing as they engaged in the Chelsea Bank computer software simulation activities. Appendixes present the SCANS Analysis Coding Sheet; coding problem analysis of 50 video segments; student and teacher interview…

Student Part-Time Employment: Characteristics and Consequences

Science.gov (United States)

Robotham, David

2012-01-01

Purpose: The aim of the paper is to examine the consequences of students engaging in part-time employment during their studies. It reports the results of a survey of part-time employment among university students. The research examined the possible consequences of combining part-time employment with full-time study, with particular reference to…

Forest structure and stem volume assessment based on airborne laser scanning / Avaliação da estrutura florestal e do volume de madeira a partir de laser aerotransportado

Directory of Open Access Journals (Sweden)

Markus Hollaus

2012-10-01

Full Text Available This paper presents a methodology for the derivation of structural parameters and stem volume in forests based on Airborne Laser Scanning (ALS data. We describe three different measures of horizontal and vertical canopy structure: (1 tree crown segmentation, (2 compactness of vegetation patches, and (3 vertical layering of vegetation patches and canopy cover. An empirical regression model for the derivation of stem volume from the ALS and forest inventory sample plot data is described and its results are validated with extensive reference data. Different study areas in Austria were used to illustrate the workflows. The presented study demonstrates the applicability of the proposed methods on study sites and ALS data of differing characteristics, as well as it points out the suitability of ALS as a tool for reliable wide area assessment of structural parameters and stem volume for forested areas.ResumoEsse artigo apresenta uma metodologia para derivação de parâmetros estruturais e de volume de madeira em florestas baseado em dados de Laser Scanner Aerotransportado (ALS. Nós descrevemos três diferentes medidas da estrutura horizontal e vertical da copa: (1 segmentação da copa da árvore, (2 compacidade das manchas de vegetação, (3 estratificação vertical das manchas de vegetação e cobertura do dossel. Um modelo empírico de regressão para derivar o volume de madeira fazendo uso de dados ALS e dados amostrais obtidos em inventário florestal é descrito e seus resultados são validados com extensivos dados de referência. Diferentes áreas na Áustria foram utilizadas para ilustrar o fluxo de trabalho. O estudo apresentado demonstra a aplicabilidade dos métodos propostos nas áreas de estudo e dos dados ALS de diferentes características, bem como aponta a adequação do ALS como ferramenta confiável para avaliação de parâmetros de estrutura e de volume de madeira de amplas áreas florestais.

(How) do medical students regulate their emotions?

Science.gov (United States)

Doulougeri, Karolina; Panagopoulou, Efharis; Montgomery, Anthony

2016-12-12

Medical training can be a challenging and emotionally intense period for medical students. However the emotions experienced by medical students in the face of challenging situations and the emotion regulation strategies they use remains relatively unexplored. The aim of the present study was to explore the emotions elicited by memorable incidents reported by medical students and the associated emotion regulation strategies. Peer interviewing was used to collect medical students' memorable incidents. Medical students at both preclinical and clinical stage of medical school were eligible to participate. In total 104 medical students provided memorable incidents. Only 54 narratives included references to emotions and emotion regulation and thus were further analyzed. The narratives of 47 clinical and 7 preclinical students were further analyzed for their references to emotions and emotion regulation strategies. Forty seven out of 54 incidents described a negative incident associated with negative emotions. The most frequently mentioned emotion was shock and surprise followed by feelings of embarrassment, sadness, anger and tension or anxiety. The most frequent reaction was inaction often associated with emotion regulation strategies such as distraction, focusing on a task, suppression of emotions and reappraisal. When students witnessed mistreatment or disrespect exhibited towards patients, the regulation strategy used involved focusing and comforting the patient. The present study sheds light on the strategies medical students use to deal with intense negative emotions. The vast majority reported inaction in the face of a challenging situation and the use of more subtle strategies to deal with the emotional impact of the incident.

Aldosterone and mortality in hemodialysis patients: role of volume overload.

Science.gov (United States)

Hung, Szu-Chun; Lin, Yao-Ping; Huang, Hsin-Lei; Pu, Hsiao-Fung; Tarng, Der-Cherng

2013-01-01

Elevated aldosterone is associated with increased mortality in the general population. In patients on dialysis, however, the association is reversed. This paradox may be explained by volume overload, which is associated with lower aldosterone and higher mortality. We evaluated the relationship between aldosterone and outcomes in a prospective cohort of 328 hemodialysis patients stratified by the presence or absence of volume overload (defined as extracellular water/total body water >48%, as measured with bioimpedance). Baseline plasma aldosterone was measured before dialysis and categorized as low (280 pg/mL). Overall, 36% (n = 119) of the hemodialysis patients had evidence of volume overload. Baseline aldosterone was significantly lower in the presence of volume overload than in its absence. During a median follow-up of 54 months, 83 deaths and 70 cardiovascular events occurred. Cox multivariate analysis showed that by using the low aldosterone as the reference, high aldosterone was inversely associated with decreased hazard ratios for mortality (0.49; 95% confidence interval, 0.25-0.76) and first cardiovascular event (0.70; 95% confidence interval, 0.33-0.78) in the presence of volume overload. In contrast, high aldosterone was associated with an increased risk for mortality (1.97; 95% confidence interval, 1.69-3.75) and first cardiovascular event (2.01; 95% confidence interval, 1.28-4.15) in the absence of volume overload. The inverse association of aldosterone with adverse outcomes in hemodialysis patients is due to the confounding effect of volume overload. These findings support treatment of hyperaldosteronemia in hemodialysis patients who have achieved strict volume control.

Reference Manual on Making School Climate Improvements. School Climate Improvement Resource Package, 2017

Science.gov (United States)

Yoder, N.; Darling-Churchill, K.; Colombi, G. D.; Ruddy, S.; Neiman, S.; Chagnon, E.; Mayo, R.

2017-01-01

This reference manual identifies five overarching sets of activities for improving school climate, with the goal of improving student outcomes (e.g., achievement, attendance, behaviors, and skills). These sets of activities help to initiate, implement, and sustain school climate improvements. For each activity set, the manual presents a clear…

Suggestion for the prostatic fossa clinical target volume in adjuvant or salvage radiotherapy after a radical prostatectomy

International Nuclear Information System (INIS)

Park, Jun Su; Park, Won; Pyo, Hong Ryull; Park, Byung Kwan; Park, Sung Yoon; Choi, Han Yong; Lee, Hyun Moo; Jeon, Seong Soo; Seo, Seong Il; Jeong, Byong Chang; Jeon, Hwang Gyun

2014-01-01

Background and purpose: To assess the location of recurrent tumors and suggest the optimal target volume in adjuvant or salvage radiotherapy (RT) after a radical prostatectomy (RP). Material and methods: From January 2000 to December 2012, 113 patients had been diagnosed with suspected recurrent prostate cancer by MRI scan and received salvage RT in the Samsung Medical Center. This study assessed the location of the suspected tumor recurrences and used the inferior border of the pubic symphysis as a point of reference. Results: There were 118 suspect tumor recurrences. The most common site of recurrence was the anastomotic site (78.8%), followed by the bladder neck (15.3%) and retrovesical area (5.9%). In the cranial direction, 106 (87.3%) lesions were located within 30 mm of the reference point. In the caudal direction, 12 lesions (10.2%) were located below the reference point. In the transverse plane, 112 lesions (94.9%) were located within 10 mm of the midline. Conclusions: A MRI scan acquired before salvage RT is useful for the localization of recurrent tumors and the delineation of the target volume. We suggest the optimal target volume in adjuvant or salvage RT after RP, which includes 97% of suspected tumor recurrences

Barnwell Nuclear Fuels Plant applicability study. Volume III. Appendices

International Nuclear Information System (INIS)

1978-03-01

Volume III suppliees supporting information to assist Congress in making a decision on the optimum utilization of the Barnwell Nuclear Fuels Plant. Included are applicable fuel cycle policies; properties of reference fuels; description and evaluation of alternative operational (flue cycle) modes; description and evaluation of safeguards systems and techniques; description and evaluation of spiking technology; waste and waste solidification evaluation; and Department of Energy programs relating to nonproliferation

High energy physicists and graduate students: 1981 census

International Nuclear Information System (INIS)

1982-02-01

This listing of physicists and students associated with the US high energy physics program has been compiled in the Division of High Energy Physics of the Office of Energy Research of the US Department of Energy. This listing has been obtained by asking the research groups, laboratories, and other agencies involved to update previous information. This volume is in two parts. The first part is an alphabetical listing and includes only the name, rank, and institution of high energy physicists and graduate students. The second part of the volume is arranged by institution. Within each institution, the faculty (or permanent staff) and the graduate students are presented in separate alphabetical lists. For each person the entry indicates their birthdate, the year and institution of their highest degree, their rank and institutional affiliation with starting dates, up to three items selected from a list of research specialties, and their sources of federal support. For the graduate students, there is also indicated an estimated date for their degree. Where appropriate, a person is listed at more than one institution. Except as noted in the headings, the information is intended to indicate the situation as of January 1, 1981

laboratory activities and students practical performance

African Journals Online (AJOL)

unesco

as necessary and important, very little justification was given for their .... Chemistry laboratory activities refer to the practical activities which students ..... equations, formulae, definitions, terminology, physical properties, hazards or disposal.

Novel gravimetric measurement technique for quantitative volume calibration in the sub-microliter range

International Nuclear Information System (INIS)

Liang, Dong; Zengerle, Roland; Steinert, Chris; Ernst, Andreas; Koltay, Peter; Bammesberger, Stefan; Tanguy, Laurent

2013-01-01

We present a novel measurement method based on the gravimetric principles adapted from the ASTM E542 and ISO 4787 standards for quantitative volume determination in the sub-microliter range. Such a method is particularly important for the calibration of non-contact micro dispensers as well as other microfluidic devices. The novel method is based on the linear regression analysis of continuously monitored gravimetric results and therefore is referred to as ‘gravimetric regression method (GRM)’. In this context, the regression analysis is necessary to compensate the mass loss due to evaporation that is significant for very small dispensing volumes. A full assessment of the measurement uncertainty of GRM is presented and results in a standard measurement uncertainty around 6 nl for dosage volumes in the range from 40 nl to 1 µl. The GRM has been experimentally benchmarked with a dual-dye ratiometric photometric method (Artel Inc., Westbrook, ME, USA), which can provide traceability of measurement to the International System of Units (SI) through reference standards maintained by NIST. Good precision (max. CV = 2.8%) and consistency (bias around 7 nl in the volume range from 40 to 400 nl) have been observed comparing the two methods. Based on the ASTM and ISO standards on the one hand and the benchmark with the photometric method on the other hand, two different approaches for establishing traceability for the GRM are discussed. (paper)

Courses of Information Technologies and Statistics for the Students ...

African Journals Online (AJOL)

pc

2018-03-05

Mar 5, 2018 ... Influence on the developing of the diploma thesis and .... independently emphasizing the most important topics regarding research. REFERENCES ... Available: British Journal of Oral and Maxillofacial Surgery,. Volume. 46,.

Dose volume assessment of high dose rate 192IR endobronchial implants

International Nuclear Information System (INIS)

Cheng, B. Saw; Korb, Leroy J.; Pawlicki, Todd; Wu, Andrew

1996-01-01

Purpose: To study the dose distributions of high dose rate (HDR) endobronchial implants using the dose nonuniformity ratio (DNR) and three volumetric irradiation indices. Methods and Materials: Multiple implants were configured by allowing a single HDR 192 Ir source to step through a length of 6 cm along an endobronchial catheter. Dwell times were computed to deliver a dose of 5 Gy to points 1 cm away from the catheter axis. Five sets of source configurations, each with different dwell position spacings from 0.5 to 3.0 cm, were evaluated. Three-dimensional (3D) dose distributions were then generated for each source configuration. Differential and cumulative dose-volume curves were generated to quantify the degree of target volume coverage, dose nonuniformity within the target volume, and irradiation of tissues outside the target volume. Evaluation of the implants were made using the DNR and three volumetric irradiation indices. Results: The observed isodose distributions were not able to satisfy all the dose constraints. The ability to optimally satisfy the dose constraints depended on the choice of dwell position spacing and the specification of the dose constraint points. The DNR and irradiation indices suggest that small dwell position spacing does not result in a more homogeneous dose distribution for the implant. This study supports the existence of a relationship between the dwell position spacing and the distance from the catheter axis to the reference dose or dose constraint points. Better dose homogeneity for an implant can be obtained if the spacing of the dwell positions are about twice the distance from the catheter axis to the reference dose or dose constraint points

Students' Perceptions of Their Rights in Portugal.

Science.gov (United States)

Veiga, Feliciano H.

2001-01-01

Analyzes young Portuguese students' perceptions of their rights at school and at home. Results reveal that students who have a greater degree of personal limitations, or who live in worse school or family contexts, are the ones who indicate less importance and perceive less existence of rights at school and at home. (Contains 15 references and 5…

Combating student plagiarism an academic librarian's guide

CERN Document Server

Lampert, Lynn D

2014-01-01

This practical book introduces readers to the current issues facing todays academic reference and instruction librarians grappling with the growing problem of student plagiarism. The book provides up-to-date overviews of student plagiarism, examples of ways in which librarians can educate students through proven instructional techniques, collaboration approaches and outreach methods, and discusses common problems and questions librarians may encounter when incorporating current anti-plagiarism instruction into their instructional services. Topics include: role of the academic librarian in combating student plagiarism, discipline-based approaches to combating student plagiarism, information literacy techniques and faculty/librarian collaboration. Investigates the issues surrounding the growth of instances of student plagiarism Discusses the academic librarian's role in combating student plagiarism Recommends effective outreach techniques and instructional methods for preventing plagiarism.

Exploring the Orientations of International Students in Mexico: Differences by Region of Origin

Science.gov (United States)

Cantwell, Brendan; Luca, Sandra G.; Lee, Jenny J.

2009-01-01

This study examined the dispositions, experiences, and expectations of international students in a developing country to understand the increasing phenomenon of reverse student flows and the role of the political economy in international student mobility. Students' dispositions, experiences and expectations--referred here collectively as…

A Model for Forecasting Enlisted Student IA Billet Requirements

Science.gov (United States)

2016-03-01

IA execution ........................................... 4   Figure 2.   Learning center to resource sponsor alignment...initial entry training” [3]. 4 Figure 1. Training that counts as student IA execution The second type of chargeable training is the...Reference [ 4 ] describes the process the Navy uses to build the student IA program. It comprises three steps. The first is to forecast student IA E

Potential use of geothermal resources in the Snake River Basin: an environmental overview. Volume II. Annotated bibliography

Energy Technology Data Exchange (ETDEWEB)

Spencer, S.G.; Russell, B.F.; Sullivan, J.F. (eds.)

1979-09-01

This volume is a partially annotated bibliography of reference materials pertaining to the seven KGRA's. The bibliography is divided into sections by program element as follows: terrestrial ecology, aquatic ecology, heritage resources, socioeconomics and demography, geology, geothermal, soils, hydrology and water quality, seismicity, and subsidence. Cross-referencing is available for those references which are applicable to specific KGRA's. (MHR)

Brain volume reduction after whole-brain radiotherapy: quantification and prognostic relevance.

Science.gov (United States)

Hoffmann, Christian; Distel, Luitpold; Knippen, Stefan; Gryc, Thomas; Schmidt, Manuel Alexander; Fietkau, Rainer; Putz, Florian

2018-01-22

Recent studies have questioned the value of adding whole-brain radiotherapy (WBRT) to stereotactic radiosurgery (SRS) for brain metastasis treatment. Neurotoxicity, including radiation-induced brain volume reduction, could be one reason why not all patients benefit from the addition of WBRT. In this study, we quantified brain volume reduction after WBRT and assessed its prognostic significance. Brain volumes of 91 patients with cerebral metastases were measured during a 150-day period after commencing WBRT and were compared with their pretreatment volumes. The average daily relative change in brain volume of each patient, referred to as the "brain volume reduction rate," was calculated. Univariate and multivariate Cox regression analyses were performed to assess the prognostic significance of the brain volume reduction rate, as well as of 3 treatment-related and 9 pretreatment factors. A one-way analysis of variance was used to compare the brain volume reduction rate across recursive partitioning analysis (RPA) classes. On multivariate Cox regression analysis, the brain volume reduction rate was a significant predictor of overall survival after WBRT (P < 0.001), as well as the number of brain metastases (P = 0.002) and age (P = 0.008). Patients with a relatively favorable prognosis (RPA classes 1 and 2) experienced significantly less brain volume decrease after WBRT than patients with a poor prognosis (RPA class 3) (P = 0.001). There was no significant correlation between delivered radiation dose and brain volume reduction rate (P = 0.147). In this retrospective study, a smaller decrease in brain volume after WBRT was an independent predictor of longer overall survival. © The Author(s) 2017. Published by Oxford University Press on behalf of the Society for Neuro-Oncology. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com

Spirometric reference values for Hopi Native American children ages 4-13 years.

Science.gov (United States)

Arnall, David A; Nelson, Arnold G; Hearon, Christopher M; Interpreter, Christina; Kanuho, Verdell

2016-04-01

Spirometry is the most important tool in diagnosing pulmonary disease and is the most frequently performed pulmonary function test. Respiratory disease is also one of the greatest causes for morbidity and mortality on the Hopi Nation, but no specific reference equations exist for this unique population. The purpose of this study was to determine if population reference equations were necessary for these children and, if needed, to create new age and race-specific pulmonary nomograms for Hopi children. Two hundred and ninety-two healthy children, ages 4-13 years, attending Hopi Nation elementary schools in Arizona, were asked to perform spirometry for a full battery of pulmonary volumes and capacities of which the following were analyzed: forced vital capacity (FVC), forced expiratory volume in 1 sec (FEV1 ), FEV1 % (FEV1 /FVC), FEF25-75% and peak expiratory flow rate (PEFR). Spirometric data from Navajo children living in the same geographical region as the Hopi children were compared as well as spirometric data from common reference values used for other ethnic groups in the USA. Spirometry tests from 165 girls and 127 boys met American Thoracic Society quality control standards. We found that the natural log of height, body mass and age were significant predictors of FEV1 , FVC, and FEF25-75% in the gender-specific models and that lung function values all increased with height and age as expected. The predictions using the equations derived for Navajo, Caucasian, Mexican-American, African-American youth were significantly different (P ≤ 0.05) from the predictions derived from the Hopi equations for all of the variables across both genders, with the exceptions of Hopi versus Navajo FEV1 /FVC in the males and Hopi versus Caucasians FEF25-75% in the females. Thus it would appear for this population important to have specific formulae to provide more accurate reference values. © 2015 Wiley Periodicals, Inc.

Growth references

NARCIS (Netherlands)

Buuren, S. van

2007-01-01

A growth reference describes the variation of an anthropometric measurement within a group of individuals. A reference is a tool for grouping and analyzing data and provides a common basis for comparing populations.1 A well known type of reference is the age-conditional growth diagram. The

Therapy 101: A Psychotherapy Curriculum for Medical Students

Science.gov (United States)