Top Four Trends in Student Information Systems

Science.gov (United States)

Weathers, Robert

2013-01-01

The modern student information systems (SIS) is a powerful administrative tool with robust functionality. As such, it is essential that school and district administrators consider the top trends in modern student information systems before going forward with system upgrades or new purchases. These trends, described herein, are: (1) Support for…

Quantitative neutron radiography using neutron absorbing honeycomb

International Nuclear Information System (INIS)

Tamaki, Masayoshi; Oda, Masahiro; Takahashi, Kenji; Ohkubo, Kohei; Tasaka, Kanji; Tsuruno, Akira; Matsubayashi, Masahito.

1993-01-01

This investigation concerns quantitative neutron radiography and computed tomography by using a neutron absorbing honeycomb collimator. By setting the neutron absorbing honeycomb collimator between object and imaging system, neutrons scattered in the object were absorbed by the honeycomb material and eliminated before coming to the imaging system, but the neutrons which were transmitted the object without interaction could reach the imaging system. The image by purely transmitted neutrons gives the quantitative information. Two honeycombs were prepared with coating of boron nitride and gadolinium oxide and evaluated for the quantitative application. The relation between the neutron total cross section and the attenuation coefficient confirmed that they were in a fairly good agreement. Application to quantitative computed tomography was also successfully conducted. The new neutron radiography method using the neutron-absorbing honeycomb collimator for the elimination of the scattered neutrons improved remarkably the quantitativeness of the neutron radiography and computed tomography. (author)

Information literacy skills of undergraduate medical radiation students

Energy Technology Data Exchange (ETDEWEB)

Shanahan, Madeleine C. [Medical Radiations, School of Medical Sciences, RMIT University, PO Box 71, Bundoora, Victoria (Australia)]. E-mail: mshanahan@rmit.edu.au

2007-08-15

Undergraduate education is undergoing a shift away from the traditional transmission of a fixed body of knowledge to a learning approach where the emphasis is on supporting learners to learn. Central to this change is recognition that undergraduate education programmes should aim to develop independent learners who become effective lifelong learning practitioners. Successful independent learning as an undergraduate student or as a lifelong learner requires the learner to have well developed information literacy skills. An Online Electronic Information Skills (OEIS) intervention was designed to develop the information literacy skills in a cohort of second year undergraduate radiography students. An evaluation focused on learning outcomes was used to provide evidence of development of information literacy within the undergraduate course. The evaluation clearly demonstrated substantial skill development in students' ability to access scholarly information in their discipline area. The reported continued use of database searching by this cohort of students seven months after the OEIS intervention provides evidence that they are continuing to access and use scholarly information, information literacy skills necessary for their future work context.

Information literacy skills of undergraduate medical radiation students

International Nuclear Information System (INIS)

Shanahan, Madeleine C.

2007-01-01

Undergraduate education is undergoing a shift away from the traditional transmission of a fixed body of knowledge to a learning approach where the emphasis is on supporting learners to learn. Central to this change is recognition that undergraduate education programmes should aim to develop independent learners who become effective lifelong learning practitioners. Successful independent learning as an undergraduate student or as a lifelong learner requires the learner to have well developed information literacy skills. An Online Electronic Information Skills (OEIS) intervention was designed to develop the information literacy skills in a cohort of second year undergraduate radiography students. An evaluation focused on learning outcomes was used to provide evidence of development of information literacy within the undergraduate course. The evaluation clearly demonstrated substantial skill development in students' ability to access scholarly information in their discipline area. The reported continued use of database searching by this cohort of students seven months after the OEIS intervention provides evidence that they are continuing to access and use scholarly information, information literacy skills necessary for their future work context

Information Needs and Information Seeking Behavior of Foreign Students in University of Delhi: A Survey

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K P Singh

2015-01-01

Full Text Available The purpose of this paper is to investigate the information needs and information seeking behavior of foreign students. A survey method was used for the undertaken study. The data were collected using a structured questionnaire, self-administered to 120 foreign students (60 males & 60 females with 88 (47 males & 41 females returns. The research is limited to post-graduate, M.Phil. and Ph.D. foreign students in University of Delhi. It was found that post-graduate students need information regarding their program of study while research scholars need information for writing research articles and for doing their research work. Most of them seek information through the internet. Research scholars used electronic resources such as databases, e-journals and e-theses and dissertations. 88.6% of the respondents also use books for seeking information. Their use of the library is limited with complaints about library staff and too few computer terminals. The present study will be helpful in designing new systems and services for the foreign students so that their information needs can be fulfilled easily. Further, findings of the study indicate that how the library professionals should assist foreign students to accomplish their information needs.

Sequencing Genetics Information: Integrating Data into Information Literacy for Undergraduate Biology Students

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MacMillan, Don

2010-01-01

This case study describes an information literacy lab for an undergraduate biology course that leads students through a range of resources to discover aspects of genetic information. The lab provides over 560 students per semester with the opportunity for hands-on exploration of resources in steps that simulate the pathways of higher-level…

How Students Evaluate Information and Sources when Searching the World Wide Web for Information

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Walraven, Amber; Brand-Gruwel, Saskia; Boshuizen, Henny P. A.

2009-01-01

The World Wide Web (WWW) has become the biggest information source for students while solving information problems for school projects. Since anyone can post anything on the WWW, information is often unreliable or incomplete, and it is important to evaluate sources and information before using them. Earlier research has shown that students have…

Informing Educational Psychology Training with Students ...

African Journals Online (AJOL)

The purpose of this article was to describe students' experiences of community engagement in an Educational Psychology practicum in order to inform relevant educational psychology training literature with experiences of students' community engagement. Experiential learning served as our theoretical framework and we ...

Absorbing Property of Multi-layered Short Carbon Fiber Absorbing Coating

OpenAIRE

Liu, Zhaohui; Tao, Rui; Ban, Guodong; Luo, Ping

2018-01-01

The radar absorbing coating was prepared with short carbon fiber asabsorbent and waterborne polyurethane (WPU) as matrix resin. The coating’s absorbing property was tested with vectornetwork analyzer, using aramid honeycomb as air layer which was matched withcarbon fiber coating. The results demonstrate that the single-layered carbonfiber absorbing coating presented relatively poor absorbing property when thelayer was thin, and the performance was slightly improved after the matched airlayer ...

Information literacy during entry to practice: information-seeking behaviors in student nurses and recent nurse graduates.

Science.gov (United States)

Wahoush, Olive; Banfield, Laura

2014-02-01

The ability to locate information pertinent to guide clinical practice is important for quality nursing care and patient safety. To date, little is known about the transfer of information literacy skills as student nurses transition to clinical practice as new graduates. This study begins to address this gap from the perspective of student nurses, recent nurse graduates (RNs), nurse leaders and library staff. To describe the information-seeking behaviors of student nurses and RNs within their clinical settings. This is a descriptive study that included both cross-sectional surveys and key informant interviews. Participants were senior-level undergraduate students and recently graduated RNs (graduated since 2008), and nurse leaders and library staff employed in one of the clinical sites accepting undergraduate students from the McMaster Mohawk and Conestoga BScN program. The study was completed in two large hospital corporations in Hamilton, Ontario, Canada. Student nurses and RNs were invited to complete online surveys to assess their access to and use of information sources and resources within clinical practice. Students completed a survey comprised of five open-ended questions, while RNs completed a survey comprised of 13 fixed choice and open-ended questions. Nurse leaders and library staff participated in qualitative interviews to verify the extent and availability of information resources. Eighteen RNs and 62 students completed their respective surveys. Three categories of information sources and resources were identified: electronic, print and interpersonal. Electronic sources of information were the most used resource by both students and RNs. More RNs reported using interpersonal sources, while students reported using more print sources of information. Recent RN graduates meet the Canadian Association of Schools of Nursing performance indicators related to information access for the entry to practice Nursing Informatics competencies. Crown Copyright �

Investigating the relationship between information literacy and academic performance among students.

Science.gov (United States)

Soleymani, Mohammad Reza

2014-01-01

Nowadays, no student can ever pursue the ends of his studies unless he makes use of his information literacy skills. To become lifelong learners, they do need these skills. Information literacy is a set of information needed for searching, retrieval, evaluating, and making best use of information. This study uncovers the relationship between information literacy and academic performance among students at Isfahan University of Medical Sciences. This is a practical study using a survey method. All MA students in Isfahan University of Medical Sciences make the statistical population for this study, according to the sample size determined by using Cochran formula 265 samples that were selected by stratified random sampling. Data collection was through information literacy questionnaires designed by Davarpanah and Siamak, verified by Library and Information Sciences experts; and finally, gave a Cronbach's alpha of 0.83. To determine academic performance, the average scores of the students in previous semesters were considered. The information literacy of all other students was significantly higher than medium except for students at Nursing and Nutrition faculties. The students of Management and Information Sciences faculty had the highest level of information literacy and students of nutrition faculty were attributed with the least level. There was no significant difference between male and female students' information literacy. We also found out that there was a significant positive relationship between information literacy and students' academic performance in Isfahan University of Medical Sciences. Information literacy is one of the most important factors that leads to educational success. As there is a significant positive relationship between information literacy and students' academic performance, we should necessarily provide them with relative skills dealing with information literacy to improve their academic performance.

Collaborating to optimize nursing students' agency information technology use.

Science.gov (United States)

Fetter, Marilyn S

2009-01-01

As the learning laboratory for gaining actual patient care experience, clinical agencies play an essential role in nursing education. With an information technology revolution transforming healthcare, nursing programs are eager for their students to learn the latest informatics systems and technologies. However, many healthcare institutions are struggling to meet their own information technology needs and report limited resources and other as barriers to nursing student training. In addition, nursing students' information technology access and use raise security and privacy concerns. With the goal of a fully electronic health record by 2014, it is imperative that agencies and educational programs collaborate. They need to establish educationally sound, cost-effective, and secure policies and procedures for managing students' use of information technology systems. Strategies for evaluating options, selecting training methods, and ensuring data security are shared, along with strategies that may reap clinical, economic, and educational benefits. Students' information technology use raises numerous issues that the nursing profession must address to participate in healthcare's transformation into the digital age.

Information technologies in physical education of students.

Directory of Open Access Journals (Sweden)

Ivchatova T.V.

2011-05-01

Full Text Available In the article is presented the systematized information about the using features of modern information technologies in practice of student physical education in not athletic universities. The analysis of domestic and foreign literature is conducted, and also Internet sources related to the problem of healthy way of life of students, and also to forming of active position in maintenance and strengthening of the health.

Making Students Eat Their Greens: Information Skills for Chemistry Students

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Sarah George

2016-12-01

Full Text Available Employers are increasingly requiring a range of "soft" skills from chemistry graduates, including the ability to search for and critically evaluate information. This paper discusses the issues around encouraging chemistry students to engage with information skills and suggests curricular changes which may help to "drip-feed" information skills into degree programs.

Method of absorbing UF6 from gaseous mixtures in alkamine absorbents

International Nuclear Information System (INIS)

Lafferty, R.H.; Smiley, S.H.; Radimer, K.J.

1976-01-01

A method is described for recovering UF 6 from gaseous mixtures by absorption in a liquid. The liquid absorbent must have a relatively low viscosity and at least one component of the absorbent is an alkamine having less than 3 carbon atoms bonded to the amino nitrogen, less than 2 of the carbon atoms other than those bonded to the amino nitrogen are free of the hydroxy radical and precipitate the absorbed uranium from the absorbent. At least one component of the absorbent is chosen from the group consisting of ethanolamine, diethanolamine, and 3-methyl-3-amino-propane-diol-1,2

Gender and Information Literacy: Evaluation of Gender Differences in a Student Survey of Information Sources

Science.gov (United States)

Taylor, Arthur; Dalal, Heather A.

2017-01-01

Information literacy studies have shown that college students use a variety of information sources to perform research and commonly choose Internet sources over traditional library sources. Studies have also shown that students do not appear to understand the information quality issues concerning Internet information sources and may lack the…

THE DEVELOPMENT OF INFORMATION COMPETENCES FOR MEDICAL STUDENTS

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S. I. Karas

2014-01-01

Full Text Available The goal of this paper is the analysis of information communication technologies using for professional competencies development for medical students. There are described two informational learning technologies: standard and developed in Tomsk.Virtual learning environment Moodle is open source software which is developed for on-line education and installed in more than a dozen thousands educational institutions around the world including Russia. The Moodle provides students with rapid access to professional-oriented learning information via Internet any time and through any gadget. Using the Moodle a teacher can present different types of digital information, organize learning course, student’s knowledge and skills evaluation after structuring teacher’s knowledge. Rating approach is implemented in the Moodle very easy. Developed and develo­ping resources for the Moodle are located at the server http://simcenter.ssmu.ru.Learning electronic health record (LEHR is developing by Tomsk professional team and it is the integration of an electronic health record and a program for clinical subject. There are additional functions besides usual for paper medical record, for example: learning about specialized software, electronic re­ference books, and medical standard documents. Information and clinical competences are forming in LEHR at the same time what is the undoubted advantage for students. Now LEHR on pediatrics and neurology are testing before trial exploitation in the learning. Software for LEHR and information about virtual patients are located at the server http://students.umssoft.com.The analysis and our experience have shown the possibilities of effective using the information communication technologies for development of informational and professional competencies of medical students in different subjects of educational program.

Creative Approaches to Information Literacy for Creative Arts Students

Science.gov (United States)

Appleton, Leo; Grandal Montero, Gustavo; Jones, Abigail

2017-01-01

This paper discusses the information literacy requirements of art and design students, and how traditional approaches to information literacy education are not always appropriate for these particular students. The paper argues that different, creative, and innovative approaches to information literacy training need to be developed with the…

Iterative student-based testing of automated information-handling exercises

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C. K. Ramaiah

1995-12-01

Full Text Available Much laboratory teaching of information-handling involves students in evaluating information provided either online or via a computer package. A lecturer can help students carry out these tasks in a variety of ways. In particular, it is customary to provide students with hand-outs, and there is good evidence that such hand-outs are a valuable resource, especially for lower-ability students (see, for example Saloman, 1979. In many of these exercises, students are passive receivers of information, in the sense that they assess the information but do not change it. However, it is sometimes possible to use student feedback to change the original input. In this case, the users' mental models of the system can be employed to modify the user-interface set up by the original designer (see Moran, 1981. A number of experiments have been carried out in the Department of Information and Library Studies at Loughborough University to examine how computer interfaces and instruction sheets used in teaching can be improved by student feedback. The present paper discusses examples of this work to help suggest both the factors to be taken into account and the sorts of changes involved. Our approach has been based on the concept of 'iterative usability testing', the value of which has recently been emphasized by Shneiderman (1993.

Middle-School Students' Online Information Problem Solving Behaviors on the Information Retrieval Interface

Science.gov (United States)

Yeh, Yi-Fen; Hsu, Ying-Shao; Chuang, Fu-Tai; Hwang, Fu-Kwun

2014-01-01

With the near-overload of online information, it is necessary to equip our students with the skills necessary to deal with Information Problem Solving (IPS). This study also intended to help students develop major IPS strategies with the assistance of an instructor's scaffolding in a designed IPS course as well as on an Online Information…

Making Students Eat Their Greens: Information Skills for Chemistry Students

Science.gov (United States)

George, Sarah; Munshi, Tasnim

2016-01-01

Employers are increasingly requiring a range of "soft" skills from chemistry graduates, including the ability to search for and critically evaluate information. This paper discusses the issues around encouraging chemistry students to engage with information skills and suggests curricular changes which may help to "drip-feed"…

Iranian undergraduate nursing student perceptions of informal learning: A qualitative research.

Science.gov (United States)

Seylani, Khatereh; Negarandeh, Reza; Mohammadi, Easa

2012-11-01

Nursing education is both formal and informal. Formal education represents only a small part of all the learning involved; and many students learn more effectively through informal processes. There is little information about nursing student informal education and how it affects their character and practice. This qualitative study explores undergraduate nursing student perceptions of informal learning during nursing studies. Data were gathered through semi-structured interviews with a sample of undergraduate nursing students (n = 14). Strauss and Corbin's constant comparison analysis approach was used for data analysis. The categories that emerged included personal maturity and emotional development, social development, closeness to God, alterations in value systems, and ethical and professional commitment. Findings reveal that nursing education could take advantage of informal learning opportunities to develop students' nontechnical skills and produce more competent students. Implications for nursing education are discussed.

Information seeking and students studying for professional careers: the cases of engineering and law students in Ireland

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Gillian Kerins

2004-01-01

Full Text Available This paper reports the results of two empirical studies which explored the information seeking behaviour of engineering and law students in Ireland. Findings reveal similar patterns in the information seeking behaviour between students studying to become professionals and information seeking patterns of these groups identified in Leckie et al.'s model. Students learned their information seeking strategies, including effective and less effective approaches, from educators and continuing mis-perceptions of libraries and information professionals. The studies suggest that engineering and law students in Ireland could benefit from greater information literacy training and awareness, enabling them to acquire the information skills they need to function effectively and efficiently in their future professional work lives.

Teaching Graduate Students How To Do Informal Science Education

Science.gov (United States)

Ackerman, S. A.; Crone, W.; Dunwoody, S. L.; Zenner, G.

2011-12-01

One of the most important skills a student needs to develop during their graduate days is the skill of communicating their scientific work with a wide array of audiences. That facility will serve them across audiences, from scientific peers to students to neighbors and the general public. Increasingly, graduate students express a need for training in skills needed to manage diverse communicative environments. In response to that need we have created a course for graduate students in STEM-related fields which provides a structured framework and experiential learning about informal science education. This course seeks to familiarize students with concepts and processes important to communicating science successfully to a variety of audiences. A semester-long course, "Informal Science Education for Scientists: A Practicum," has been co-taught by a scientist/engineer and a social scientist/humanist over several years through the Delta Program in Research, Teaching, & Learning at the University of Wisconsin-Madison. The course is project based and understanding audience is stressed throughout the class. Through development and exhibition of the group project, students experience front end, formative and summative evaluation methods. The disciplines of the participating students is broad, but includes students in the geosciences each year. After a brief description of the course and its evolution, we will present assessment and evaluation results from seven different iterations of the course showing significant gains in how informed students felt about evaluation as a tool to determine the effectiveness of their science outreach activities. Significant gains were found in the graduate students' perceptions that they were better qualified to explain a research topic to a lay audience, and in the students' confidence in using and understanding evaluation techniques to determine the effectiveness of communication strategies. There were also increases in the students

Information technologies in physical education of student young people

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Ivchatova T.V.

2010-09-01

Full Text Available The uses of modern information technologies given about features are systematized in practice of physical education of students. Perspective directions of the use of computer technologies are considered in physical education of student young people. In a student environment the insufficient level of knowledges is felt on the indicated theme. There is a requirement in the receipt of the proper information on forming valued orientations which determine the healthy way of life of young people. The computer informative systems are the attractive source of popularization and propaganda of healthy way of life.

The MIRD method of estimating absorbed dose

International Nuclear Information System (INIS)

Weber, D.A.

1991-01-01

The estimate of absorbed radiation dose from internal emitters provides the information required to assess the radiation risk associated with the administration of radiopharmaceuticals for medical applications. The MIRD (Medical Internal Radiation Dose) system of dose calculation provides a systematic approach to combining the biologic distribution data and clearance data of radiopharmaceuticals and the physical properties of radionuclides to obtain dose estimates. This tutorial presents a review of the MIRD schema, the derivation of the equations used to calculate absorbed dose, and shows how the MIRD schema can be applied to estimate dose from radiopharmaceuticals used in nuclear medicine

Improving Student Learning: A Strategic Planning Framework for an Integrated Student Information System in Charlotte-Mecklenburg Schools

Science.gov (United States)

Ngoma, Sylvester

2010-01-01

There is growing recognition that an electronic Student Information System (SIS) affects student learning. Given the strategic importance of SIS in supporting school administration and enhancing student performance, school districts are increasingly interested in acquiring the most effective and efficient Student Information Systems for their…

College Students' Health Information Activities on Facebook: Investigating the Impacts of Health Topic Sensitivity, Information Sources, and Demographics.

Science.gov (United States)

Syn, Sue Yeon; Kim, Sung Un

2016-07-01

College students tend to lack access to health information. Because social networking sites (SNSs) are popularly adopted by college students, SNSs are considered to be good media channels for college students to obtain health-related information. This study examines the factors that influence college students' health information-seeking and -sharing activities on Facebook. An online survey was distributed to college students between the ages of 18 and 29 to determine intentions pertaining to health information activities according to the factors identified for the study. The factors included both contextual factors (such as health topic sensitivity and health information sources) as well as user factors (such as demographics). Our findings showed that college students are willing to read and post health-related information on Facebook when the health topic is not sensitive. In addition, there are clear differences in preferences between professional sources and personal sources as health information sources. It was found that most user factors, except gender, have no influence on health information activities. The impacts of SNS contexts, awareness of information sources, types of interlocutors, and privacy concerns are further discussed.

Aperiodic-metamaterial-based absorber

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Quanlong Yang

2017-09-01

Full Text Available The periodic-metamaterial-based perfect absorber has been studied broadly. Conversely, if the unit cell in the metamaterial-based absorber is arranged aperiodically (aperiodic-metamaterial-based absorber, how does it perform? Inspired by this, here we present a systematic study of the aperiodic-metamaterial-based absorber. By investigating the response of metamaterial absorbers based on periodic, Fibonacci, Thue-Morse, and quasicrystal lattices, we found that aperiodic-metamaterial-based absorbers could display similar absorption behaviors as the periodic one in one hand. However, their absorption behaviors show different tendency depending on the thicknesses of the spacer. Further studies on the angle and polarization dependence of the absorption behavior are also presented.

Electronic Information Access and Utilization by Makerere University Students in Uganda

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Elisam Magara

2008-09-01

Full Text Available Objectives – The objectives of this study were to establish the level of computer utilization skills of Makerere University (Uganda Library and Information Science (LIS students; to determine the use of electronic information resources by LIS students; to determine the attitudes of LIS students towards electronic information resources; and to establish the problems faced by LIS students in accessing electronic information resources.Methods – A questionnaire survey was used for data collection.Results – The majority of Library and Information Science students at Makerere University depend on university computers for their work, and very few of them access the library’s e-resources. The few who access e-resources are self-taught. The majority of students surveyed were unaware of Emerald and EBSCO databases relevant to Library and Information Science students, and they found accessing eresources time-consuming. Conclusion – The study concluded that a concerted effort is needed by both LIS lecturers and university librarians in promoting use of the library’s electronic resources.

Quantum walk with one variable absorbing boundary

International Nuclear Information System (INIS)

Wang, Feiran; Zhang, Pei; Wang, Yunlong; Liu, Ruifeng; Gao, Hong; Li, Fuli

2017-01-01

Quantum walks constitute a promising ingredient in the research on quantum algorithms; consequently, exploring different types of quantum walks is of great significance for quantum information and quantum computation. In this study, we investigate the progress of quantum walks with a variable absorbing boundary and provide an analytical solution for the escape probability (the probability of a walker that is not absorbed by the boundary). We simulate the behavior of escape probability under different conditions, including the reflection coefficient, boundary location, and initial state. Moreover, it is also meaningful to extend our research to the situation of continuous-time and high-dimensional quantum walks. - Highlights: • A novel scheme about quantum walk with variable boundary is proposed. • The analytical results of the survival probability from the absorbing boundary. • The behavior of survival probability under different boundary conditions. • The influence of different initial coin states on the survival probability.

Absorbing rods for nuclear fast neutron reactor absorbing assembly

International Nuclear Information System (INIS)

Aji, M.; Ballagny, A.; Haze, R.

1986-01-01

The invention proposes a neutron absorber rod for neutron absorber assembly of a fast neutron reactor. The assembly comprises a bundle of vertical rods, each one comprising a stack of pellets made of a neutron absorber material contained in a long metallic casing with a certain radial play with regard to this casing; this casing includes traps for splinters from the pellets which may appear during reactor operation, at the level of contact between adjacent pellets. The present invention prevents the casing from rupture involved by the disintegration of the pellets producing pieces of boron carbide of high hardness [fr

Learning centred approach for developing the electronic information search processes of students.

Science.gov (United States)

Shanahan, Madeleine

2009-11-01

Undergraduate students of the twenty-first century are widely regarded as 'technologically savvy' and have embraced the electronic information world. The literature, however, describes undergraduate students as using a limited range of electronic information sources and not critically evaluating the information they retrieve from internet searches. The aim was to evaluate a purposefully designed intervention that sought to expand the information search and evaluation practices of undergraduate students. The intervention scaffolded an independent learning activity in the form of a group-based project. Survey methodology was used to collect data from student pre- and post-intervention for two cohorts of students who undertook the intervention in 2005 and 2006 involving a total of 71 students. Percentages were used to describe survey findings and chi-square analysis and Fisher's exact test examined differences between groups. Questionnaires were completed by 59 students (response rate 83%) pre-intervention and 49 students (response rate 69%) post-intervention. Post-intervention there were positive and statistically significant differences in database searching behaviour (p = 0.000), use of Google Scholar (p = 0.035) and number of criteria used to evaluate information retrieved from the internet (p = 0.000) by students. By positively reshaping the electronic information search and evaluation practices of students we are helping students to find informed information sources as they engage in independent learning activities at university and as future health professionals.

Relationship between information-seeking behavior and innovative behavior in Chinese nursing students.

Science.gov (United States)

Zhong, Zhuqing; Hu, Dehua; Zheng, Feng; Ding, Siqing; Luo, Aijing

2018-04-01

In the information-based economy, information literacy has become the foundation of scientific literacy, and provides the basis for innovative growth. Exploring the relationship between information-seeking behaviors and innovative behaviors of nursing students could help guide the development of information literacy education and training for nursing students. The relationship between information-seeking behavior and innovative behavior in nursing students has received little attention, however. This study aims to explore the relationship between information-seeking behavior and innovative behavior of nursing students. Nursing students in Xiangya Medical School, Central South University and Medical School of Hunan Normal University in the Chinese Province of Hunan were surveyed with an information-seeking behavior scale and an innovative behavior scale. A total of 1247 nursing students were included in the final analysis. The results showed that both information-seeking behavior and innovative behavior were significantly better in undergraduates than in junior college nursing students (P information-seeking behavior was positively related to innovative behavior (r = 0.63, P information-seeking behavior were also correlated with innovative behavior in varying degrees. Furthermore, information utilization was proved to be the strongest predictor of innovative behavior. Information-seeking behavior is positively associated with innovative behavior among nursing students. There is a need to integrate information literacy education with information retrieval courses, especially in the aspects of information utilization, retrieval, and assessment. Copyright © 2018 Elsevier Ltd. All rights reserved.

University Students' Online Information Searching Strategies in Different Search Contexts

Science.gov (United States)

Tsai, Meng-Jung; Liang, Jyh-Chong; Hou, Huei-Tse; Tsai, Chin-Chung

2012-01-01

This study investigates the role of search context played in university students' online information searching strategies. A total of 304 university students in Taiwan were surveyed with questionnaires in which two search contexts were defined as searching for learning, and searching for daily life information. Students' online search strategies…

Methods for absorbing neutrons

Science.gov (United States)

Guillen, Donna P [Idaho Falls, ID; Longhurst, Glen R [Idaho Falls, ID; Porter, Douglas L [Idaho Falls, ID; Parry, James R [Idaho Falls, ID

2012-07-24

A conduction cooled neutron absorber may include a metal matrix composite that comprises a metal having a thermal neutron cross-section of at least about 50 barns and a metal having a thermal conductivity of at least about 1 W/cmK. Apparatus for providing a neutron flux having a high fast-to-thermal neutron ratio may include a source of neutrons that produces fast neutrons and thermal neutrons. A neutron absorber positioned adjacent the neutron source absorbs at least some of the thermal neutrons so that a region adjacent the neutron absorber has a fast-to-thermal neutron ratio of at least about 15. A coolant in thermal contact with the neutron absorber removes heat from the neutron absorber.

Millennial Students' Mental Models of Information Retrieval

Science.gov (United States)

Holman, Lucy

2009-01-01

This qualitative study examines first-year college students' online search habits in order to identify patterns in millennials' mental models of information retrieval. The study employed a combination of modified contextual inquiry and concept mapping methodologies to elicit students' mental models. The researcher confirmed previously observed…

Information Technology Diffusion: Impact on Student Achievement

Science.gov (United States)

Lee, Gregory M.; Lind, Mary L.

2011-01-01

For student achievement, the diffusion and adoption of information technology (IT) infrastructure enabled by special funding was posited to have a positive impact on student achievement. Four urban school districts provided the context for this study to assess the impact of IT adoption on standardized test scores.

Attitudes toward Information Competency of University Students in Social Sciences

Science.gov (United States)

Pinto, María; Fernández-Pascual, Rosaura; Gómez-Hernández, José A.; Cuevas, Aurora; Granell, Ximo; Puertas, Susana; Guerrero, David; Gómez, Carmen; Palomares, Rocío

2016-01-01

This paper examines students' self-assessment of their information literacy, presenting a study involving 1,575 social science students at five Spanish universities. Data were collected and analyzed through a validated instrument that measures the variables of (1) the students' belief in the importance of information literacy skills; (2)…

Market Research on Law School Student Aid Award Letters and Shopping Sheet Information. NASFAA Consumer Information & Law Student Indebtedness Task Force Report

Science.gov (United States)

National Association of Student Financial Aid Administrators, 2016

2016-01-01

"Market Research on Law School Student Aid Award Letters and Shopping Sheet Information" set out to identify through consumer testing what information on the financial aid award letter and U.S. Department of Education's (ED) Shopping Sheet could be modified to create a document that better assists students applying to, or currently…

Information Behaviors and Information Literacy Skills of LIS Students: An International Perspective

Science.gov (United States)

Saunders, Laura; Kurbanoglu, Serap; Boustany, Joumana; Dogan, Guleda; Becker, Peter; Blumer, Eliane; Chowdhury, Sudatta; Dobreva, Milena; Gendina, Natalia; Grgic, Ivana Hebrang; Haddow, Gaby; Koltay, Tibor; Kortelainen, Terttu; Krakowska, Monika; Majid, Shaheen; Mezhova, Marina; Repanovici, Angela; Rudžioniene, Jurgita; Schneider, Rene; Terra, Ana Lucia; Todorova, Tania Y.

2015-01-01

Librarians are expected to be expert searchers, and developing information literacy skills to navigate the vast world of information is a focus of most library and information science (LIS) programs. It is important to understand the information literacy and behaviors of LIS students to see if they are employing the skills they will need to assist…

Translating Information Literacy: Online Library Support for ESL Students

Science.gov (United States)

Lombard, Emmett

2016-01-01

This article describes information literacy struggles of ESL college students within the context of four information literacy components: Identify, Locate, Evaluate, Use. Experiences from an online freshman composition course are used to illustrate these struggles, along with techniques academic librarians use to help ESL students from a distance.

Teaching Information Security Students to "Think thief"

NARCIS (Netherlands)

Hartel, Pieter H.; Junger, Marianne

2012-01-01

We report on an educational experiment where information security master students were encouraged to think out of the box. Instead of taking the usual point of view of the security engineer we challenged the students to take the point of view of the motivated offender. We report on the exciting

Information Literacy in a Digital Era: Understanding the Impact of Mobile Information for Undergraduate Nursing Students.

Science.gov (United States)

Doyle, Glynda J; Furlong, Karen E; Secco, Loretta

2016-01-01

Recent entry-to-practice nursing informatics competencies for Registered Nurses in Canada mean nurse educators need educational strategies to promote student competency within the rapidly evolving informatics field. A collaborative research team from three Canadian nursing programs completed a mixed method survey to describe how nursing students used mobile nursing information support and the extent of this support for learning. The Mobile Information Support Evaluation Tool (MISET) assessed Usefulness/Helpfulness, Information Literacy Support, and Use of Evidence-Based Sources. The quantitative and qualitative data were analyzed to describe students' perspectives and the ways they used mobile resources in learning situations. Findings suggest nursing students mainly accessed mobile resources to support clinical learning, and specifically for task-oriented information such as drug medication or patient conditions/diagnoses. Researchers recommend a paradigm shift whereby educators emphasize information literacy in a way that supports evidence-based quality care.

Effect of the bio-absorbent on the microwave absorption property of the flaky CIPs/rubber absorbers

Energy Technology Data Exchange (ETDEWEB)

Cheng, Yang; Xu, Yonggang, E-mail: xuyonggang221@163.com; Cai, Jun; Yuan, Liming; Zhang, Deyuan

2015-09-01

Microwave absorbing composites filled with flaky carbonyl iron particles (CIPs) and the bio-absorbent were prepared by using a two-roll mixer and a vulcanizing machine. The electromagnetic (EM) parameters were measured by a vector network analyzer and the reflection loss (RL) was measured by the arch method in the frequency range of 1–4 GHz. The uniform dispersion of the absorbents was verified by comparing the calculated RL with the measured one. The results confirm that as the bio-absorbent was added, the permittivity was increased due to the volume content of absorbents, and the permeability was enlarged owing to the volume content of CIPs and interactions between the two absorbents. The composite filled with bio-absorbents achieved an excellent absorption property at a thickness of 1 mm (minimum RL reaches −7.8 dB), and as the RL was less than −10 dB the absorption band was widest (2.1–3.8 GHz) at a thickness of 2 mm. Therefore, the bio-absorbent is a promising additive candidate on fabricating microwave absorbing composites with a thinner thickness and wider absorption band. - Graphical abstract: Morphology of composites filled with flaky CIPs and the bio-absorbent. The enhancement of bio-absorbent on the electromagnetic absorption property of composites filled with flaky carbonyl iron particles (CIPs) is attributed to the interaction of the two absorbents. The volume content of the FCMPs with the larger shape CIPs play an important role in this effects, the composites filled with irons and bio-absorbents can achieve wider-band and thinner-thickness absorbing materials. - Highlights: • Absorbers filled with bio-absorbents and CIPs was fabricated. • Bio-absorbents enhanced the permittivity and permeability of the composites. • The absorbent interactions play a key role in the enhancement mechanism. • Bio-absorbents enhanced the composite RL in 1–4 GHz.

Blending Student Technology Experiences in Formal and Informal Learning

Science.gov (United States)

Lai, K.-W.; Khaddage, F.; Knezek, Gerald

2013-01-01

In this article, we discuss the importance of recognizing students' technology-enhanced informal learning experiences and develop pedagogies to connect students' formal and informal learning experiences, in order to meet the demands of the knowledge society. The Mobile-Blended Collaborative Learning model is proposed as a framework to…

Why Are Students Not Majoring in Information Systems?

Science.gov (United States)

Walstrom, Kent A.; Schambach, Thomas P.; Jones, Keith T.; Crampton, William J.

2008-01-01

The purpose of this study was to examine some of the factors that influence and impact business students when they select their major and, more particularly, to examine why students are not majoring in information systems. Students in an entry level business class responded that they were more knowledgeable about careers in management, marketing,…

Information seeking habits of information and knowledge management students: A University of Johannesburg case study

Directory of Open Access Journals (Sweden)

Cornelius J.P. Niemand

2010-10-01

Full Text Available According to Uçak (2007:697, ‘it is important to explore the information behaviours of the students who are being educated in the field of information management since the role they are going to play in establishing connections between information sources and users is crucial’. This study focuses on the identification of the information seeking behaviour of students in the department of Information and Knowledge Management at the University of Johannesburg, South Africa. The research is based on research conducted at the Hacettep University in Ankara, Turkey.

Absorbant materials

International Nuclear Information System (INIS)

Quetier, Monique.

1978-11-01

Absorbants play a very important part in the nuclear industry. They serve for the control, shut-down and neutron shielding of reactors and increase the capacity of spent fuel storage pools and of special transport containers. This paper surveys the usual absorbant materials, means of obtainment, their essential characteristics relating to their use and their behaviour under neutron irradiation [fr

Developing Students' Critical Reasoning About Online Health Information: A Capabilities Approach

Science.gov (United States)

Wiblom, Jonna; Rundgren, Carl-Johan; Andrée, Maria

2017-11-01

The internet has become a main source for health-related information retrieval. In addition to information published by medical experts, individuals share their personal experiences and narratives on blogs and social media platforms. Our increasing need to confront and make meaning of various sources and conflicting health information has challenged the way critical reasoning has become relevant in science education. This study addresses how the opportunities for students to develop and practice their capabilities to critically approach online health information can be created in science education. Together with two upper secondary biology teachers, we carried out a design-based study. The participating students were given an online retrieval task that included a search and evaluation of health-related online sources. After a few lessons, the students were introduced to an evaluation tool designed to support critical evaluation of health information online. Using qualitative content analysis, four themes could be discerned in the audio and video recordings of student interactions when engaging with the task. Each theme illustrates the different ways in which critical reasoning became practiced in the student groups. Without using the evaluation tool, the students struggled to overview the vast amount of information and negotiate trustworthiness. Guided by the evaluation tool, critical reasoning was practiced to handle source subjectivity and to sift out scientific information only. Rather than a generic skill and transferable across contexts, students' critical reasoning became conditioned by the multi-dimensional nature of health issues, the blend of various contexts and the shift of purpose constituted by the students.

Absorber for terahertz radiation management

Science.gov (United States)

Biallas, George Herman; Apeldoorn, Cornelis; Williams, Gwyn P.; Benson, Stephen V.; Shinn, Michelle D.; Heckman, John D.

2015-12-08

A method and apparatus for minimizing the degradation of power in a free electron laser (FEL) generating terahertz (THz) radiation. The method includes inserting an absorber ring in the FEL beam path for absorbing any irregular THz radiation and thus minimizes the degradation of downstream optics and the resulting degradation of the FEL output power. The absorber ring includes an upstream side, a downstream side, and a plurality of wedges spaced radially around the absorber ring. The wedges form a scallop-like feature on the innermost edges of the absorber ring that acts as an apodizer, stopping diffractive focusing of the THz radiation that is not intercepted by the absorber. Spacing between the scallop-like features and the shape of the features approximates the Bartlett apodization function. The absorber ring provides a smooth intensity distribution, rather than one that is peaked on-center, thereby eliminating minor distortion downstream of the absorber.

77 FR 43236 - Proposed Information Collection; Comment Request; SURF Program Student Applicant Information

Science.gov (United States)

2012-07-24

... Notice, and place selected students in appropriate research projects that match their needs, interests, and academic preparation. The information includes: Student name, host institution, email address... apply to, academic major/minor, current overall GPA, need for housing and gender (for housing purposes...

Impacting university physics students through participation in informal science

Science.gov (United States)

Hinko, Kathleen; Finkelstein, Noah D.

2013-01-01

Informal education programs organized by university physics departments are a popular means of reaching out to communities and satisfying grant requirements. The outcomes of these programs are often described in terms of broader impacts on the community. Comparatively little attention, however, has been paid to the influence of such programs on those students facilitating the informal science programs. Through Partnerships for Informal Science Education in the Community (PISEC) at the University of Colorado Boulder, undergraduate and graduate physics students coach elementary and middle school children during an inquiry-based science afterschool program. As part of their participation in PISEC, university students complete preparation in pedagogy, communication and diversity, engage with children on a weekly basis and provide regular feedback about the program. We present findings that indicate these experiences improve the ability of university students to communicate in everyday language and positively influence their perspectives on teaching and learning.

Empowering Students to Make Sense of an Information Saturated World: The Evolution of Information Searching and Analysis

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James H. Wittebols

2016-06-01

Full Text Available How well students conduct research online is an increasing concern for educators at all levels but especially higher education. The paper describes the evolution of a course that grew from a unit within a course to a whole course that examines confirmation bias, information searching and the political economy of information as keys to becoming more information and media literate. After a key assignment in which students assess their own tendency to engage in confirmation bias, students choose a social justice issue to investigate across web, news and academic research resources. Designed to build good analytical skills in assessing the trustworthiness of a variety of sources of information, the course empowers students as researchers, citizens and consumers.

MULTIPLE ACCESS POINTS WITHIN THE ONLINE CLASSROOM: WHERE STUDENTS LOOK FOR INFORMATION

Directory of Open Access Journals (Sweden)

John STEELE

2017-01-01

Full Text Available The purpose of this study is to examine the impact of information placement within the confines of the online classroom architecture. Also reviewed was the impact of other variables such as course design, teaching presence and student patterns in looking for information. The sample population included students from a major online university in their first year course sequence. Students were tasked with completing a survey at the end of the course, indicating their preference for accessing information within the online classroom. The qualitative data indicated that student preference is to receive information from multiple access points and sources within the online classroom architecture. Students also expressed a desire to have information delivered through the usage of technology such as email and text messaging. In addition to receiving information from multiple sources, the qualitative data indicated students were satisfied overall, with the current ways in which they received and accessed information within the online classroom setting. Major findings suggest that instructors teaching within the online classroom should have multiple data access points within the classroom architecture. Furthermore, instructors should use a variety of communication venues to enhance the ability for students to access and receive information pertinent to the course.

Arming Students against Bad Information

Science.gov (United States)

Smith, Maribeth D.

2017-01-01

In the age of fake news, teachers in every subject area should redouble their efforts to help students distinguish between credible and deceptive sources of information. The author calls attention to a few key resources, including the CRAAP guidelines developed at California State University, Chico, and promoted by the American Library Association.

INFORMATION SYSTEMS EVALUATION CRITERIA BASED ON ATTITUDES OF GRADUATE STUDENTS

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DAŘENA, František

2011-03-01

Full Text Available Importance of information systems in supporting business activities and managerial decision making is growing. Decisions related to selecting a suitable information system, including the technological background, human resources, procedures and information belong to one of the most difficult and most responsible ones. As in the case of other types of investments, assets and resources invested into information system should return in a reasonable time. There has been a lot of work done in the research and application of IS evaluation techniques to different kinds of information systems. Such evaluations involve a wide variety of technical and technological considerations made by technical experts, on the other hand impacts on management of the organization or financial impacts can be addressed. The objective of the paper is to reveal the preferences of graduate students related to their information systems evaluation and to propose a general framework for such evaluations. During the experimental period two surveys were carried out within the information systems course – at the beginning when the students were completely uninformed and at the end when the students had the knowledge of individual aspects of information systems, their role within organizations and process of information systems evaluation. The former survey used a simple scoring method whereas the latter relied on formal usage of the Analytical Hierarchy Process. The results show the differences in opinions of the students between these two surveys. Presented criteria hierarchy as well as the importance of individual evaluation criteria can be used for demonstration of attitudes of graduate students of management study programs and as a general framework for information systems evaluation.

Conceptual basis for calculations of absorbed-dose distributions

International Nuclear Information System (INIS)

Sinclair, W.K.; Rossi, H.H.; Alsmiller, R.G.; Berger, M.J.; Kellerer, A.M.; Roesch, W.C.; Spencer, L.V.; Zaider, M.A.

1991-01-01

The effects of radiation on matter are initiated by processes in which atoms and molecules of the medium are ionized or excited. Over a wide range of conditions, it is an excellent approximation to assume that the average number of ionizations and excitations is proportional to the amount of energy imparted to the medium by ionizing radiation in the volume of interest. The absorbed dose, that is, the average amount of energy imparted to the medium per unit mass, is therefore of central importance for the production of radiation effects, and the calculation of absorbed-dose distributions in irradiated media is the focus of interest of the present report. It should be pointed out, however, that even though absorbed dose is useful as an index relating absorbed energy to radiation effects, it is almost never sufficient; it may have to be supplemented by other information, such as the distributions of the amounts of energy imparted to small sites, the correlation of the amounts of energy imparted to adjacent sites, and so on. Such quantities are termed stochastic quantities. Unless otherwise stated, all quantities considered in this report are non-stochastic. 266 refs., 11 figs., 2 tabs

Information Literacy in Nursing Students of Fes Zaragoza Unam.

Science.gov (United States)

Sánchez G, Ana; Carmona M, Beatriz; Pérez O, Edgar; Del Socorro García V, Ma

2018-01-01

In an exploratory quantitative study,information literacy was analyzed in first-year students of the nursing program at the Facultad de Estudios superiores Zaragoza UNAM. A sample of 150 students completed, a validated scale that consisted of 8 categories and a total of 110 items. The average score obtained was 2.11, which places them in a 'low knowledge' category of information literacy.

Social Media as Source of Medical Information for Healthcare Students

Directory of Open Access Journals (Sweden)

Ariana Anamaria CORDOȘ

2016-03-01

Full Text Available Introduction: The scope of the research was a more detailed understanding of the influence of social media and the importance of student’s usage of social media context in relation to medical information. The research aimed to increase the understanding of social media and the impact on medical information use, informing policy and practice while highlighting gaps in the literature and areas for further research. Methods: The search of PubMed database was performed in October 2015, using terms to identify peer-reviewed research in which social media technologies were an important feature for health occupations, premedical, pharmacy, nursing or medical students. A systematic approach was used to retrieve papers and extract relevant data. Results: There were initially identified 435 studies involving social media, healthcare information and medical students subject headings (MeSH terminology. After filtering for free full text articles, and exclusion of not students or social media specific ones, 33 articles were reviewed. The majority of the studies were interventional studies that either assessed the outcomes of online discussion groups or teaching methods through social media. The majority of studies focused on the use of social media as a teaching tool, how students use it and the implications upon their education. The largest number of original papers was published in 2013. Facebook, Podcasts, Multiplayer virtual worlds, Blogs, and Twitter were identified as being used by medical students. Conclusion: Social media is used as a tool of information for students mainly as the means for engaging and communicating with students.

Graduate Students May Need Information Literacy Instruction as Much as Undergraduates

Directory of Open Access Journals (Sweden)

Robin Elizabeth Miller

2014-09-01

Full Text Available A Review of: Conway, Kate. (2011. How prepared are students for postgraduate study? A comparison of the information literacy skills of commencing undergraduate and postgraduate studies students at Curtin University. Australian Academic & Research Libraries, 42(2, 121-135. Abstract Objective – To determine whether there is a difference in the information literacy skills of postgraduate and undergraduate students beginning an information studies program, and to examine the influence of demographic characteristics on information literacy skills. Design – Online, multiple choice questionnaire to test basic information literacy skills. Setting – Information studies program at a large university in Western Australia. Subjects – 64 information studies students who responded to an email invitation to participate in an online questionnaire, a 44% response rate. Of those responding, 23 were undergraduates and 41 were postgraduates. Methods – Over the course of two semesters, an online survey was administered. In order to measure student performance against established standards, 25 test questions were aligned with the Australian and New Zealand Information Literacy Framework (ANZIIL (Bundy, 2004, an adapted version of the ACRL Information Literacy Standards for Higher Education (Association of College & Research Libraries, 2000. In the first semester that the survey was administered, 9 demographic questions were asked and 11 in the second semester. Participants were invited to respond voluntarily to the questionnaire via email. Results were presented as descriptive statistics, comparing undergraduate and postgraduate student performance. The results were not tested for statistical significance and the author did not control for confounding variables. Main Results – Postgraduate respondents scored an average of 77% on the test questionnaire, while undergraduates scored an average of 69%. The 25% of respondents who had previous work experience

Analysis of College Students' Personal Health Information Activities: Online Survey.

Science.gov (United States)

Kim, Sujin; Sinn, Donghee; Syn, Sue Yeon

2018-04-20

With abundant personal health information at hand, individuals are faced with a critical challenge in evaluating the informational value of health care records to keep useful information and discard that which is determined useless. Young, healthy college students who were previously dependents of adult parents or caregivers are less likely to be concerned with disease management. Personal health information management (PHIM) is a special case of personal information management (PIM) that is associated with multiple interactions among varying stakeholders and systems. However, there has been limited evidence to understand informational or behavioral underpinning of the college students' PHIM activities, which can influence their health in general throughout their lifetime. This study aimed to investigate demographic and academic profiles of college students with relevance to PHIM activities. Next, we sought to construct major PHIM-related activity components and perceptions among college students. Finally, we sought to discover major factors predicting core PHIM activities among college students we sampled. A Web survey was administered to collect responses about PHIM behaviors and perceptions among college students from the University of Kentucky from January through March 2017. A total of 1408 college students were included in the analysis. PHIM perceptions, demographics, and academic variations were used as independent variables to predict diverse PHIM activities using a principal component analysis (PCA) and hierarchical regression analyses (SPSS v.24, IBM Corp, Armonk, NY, USA). Majority of the participants were female (956/1408, 67.90%), and the age distribution of this population included an adequate representation of college students of all ages. The most preferred health information resources were family (612/1408, 43.47%), health care professionals (366/1408, 26.00%), friends (27/1408, 1.91%), and the internet (157/1408, 11.15%). Organizational or

Peer teaching and information retrieval: the role of the NICE Evidence search student champion scheme in enhancing students' confidence.

Science.gov (United States)

Sbaffi, Laura; Hallsworth, Elaine; Weist, Anne

2018-03-01

This research reports on the NICE Evidence search (ES) student champion scheme (SCS) first five years of activity (2011-2016) in terms of its impact on health care undergraduate students' information search skills and search confidence. A review of students' evaluation of the scheme was carried out to chart the changes in attitude towards NICE Evidence search as an online health care information source and to monitor students' approach to information seeking. This study is based on the results of questionnaires distributed to students before and after attending a training session on NICE Evidence search delivered by their own peers. The exercise was implemented in health related universities in England over a period of five consecutive academic years. (i) Students' search confidence improved considerably after the training; (ii) ES was perceived as being an increasingly useful resource of evidence based information for their studies; (iii) the training helped students develop discerning search skills and use evidence based information sources more consistently and critically. The NICE SCS improves confidence in approaching information tasks amongst health care undergraduate students. Future developments could involve offering the training at the onset of a course of study and adopting online delivery formats to expand its geographical reach. © 2018 Health Libraries Group.

Information Seeking and Students Studying for Professional Careers: The Cases of Engineering and Law Students in Ireland

Science.gov (United States)

Kerins, Gillian; Madden, Ronan; Fulton, Crystal

2004-01-01

This paper reports the results of two empirical studies which explored the information seeking behaviour of engineering and law students in Ireland. Findings reveal similar patterns in the information seeking behaviour between students studying to become professionals and information seeking patterns of these groups identified in the Leckie et al.…

Involving Medical Students in Informed Consent: A Pilot Study.

Science.gov (United States)

Chiapponi, Costanza; Meyer, Frank; Jannasch, Olof; Arndt, Stephan; Stübs, Patrick; Bruns, Christiane J

2015-09-01

Studies have reported that patients often sign consent documents without understanding the content. Written paperwork, audio-visual materials, and decision aids have shown to consistently improve patients' knowledge. How informed consent should be taken is not properly taught at most universities in Germany. In this cross-sectional study, we investigated how much information about their procedure our patients retain. In particular, it should be elucidated whether an additional conversation between patients and properly prepared medical students shortly before surgery as an adjunct to informed consent can be introduced as a new teaching unit aimed to increase the understanding of surgery by patients and students. Informed consent of all patients had been previously obtained by three surgical residents 1-3 days in advance. All patients had received a copy of their consent form. The same residents developed assessment forms for thyroidectomy, laparoscopic cholecystectomy, umbilical hernia repair, and Lichtenstein procedure for inguinal hernia, respectively, containing 3-4 major common complications (e.g., bile duct injury, hepatic artery injury, stone spillage, and retained stones for laparoscopic cholecystectomy) and briefed the medical students before seeing the patients. Structured one-to-one interviews between students (n = 9) and patients (n = 55) based on four different assessment forms were performed and recorded by students. Both patients and students were asked to assess the new teaching unit using a short structured questionnaire. Although 100% of patients said at the beginning of their interview to have understood and memorized the risks of their imminent procedure, 5.8% (3/55) were not even able to indicate the correct part of the body where the incision would take place. Only 18.2% (10/55) of the patients were able to mention 2 or more complications, and 45.3% (25/55) could not even recall a single one. 96.4% (53/55) of the patients and 100% (9/9) of the

ACADEMIC MOTIVATION FOR BUSINESS INFORMATION SYSTEMS STUDENTS

OpenAIRE

Catalin Maican; Radu Lixandroiu

2015-01-01

Academic Motivation Scale (AMS) was applied to Business Information Systems students for finding out their reasons and motives for enrolling this academic field, for undergraduate and postgraduate academic cycles. The students were presented the AMS scale translated in Romanian, together with other questionnaires. The first part of the paper makes a short introduction to AMS, the second describes its objectives, while the third presents the results.

Student Attitudes toward Information Systems Graduate Program Design and Delivery

Science.gov (United States)

Thouin, Mark F.; Hefley, William E.; Raghunathan, Srinivasan

2018-01-01

This study examines student preferences regarding graduate management information systems (MIS) education. One hundred and eighty four graduate students responded to a survey exploring student attitudes towards degree program content, delivery format, and peer group interaction. Study results indicate that students prefer a program with an even…

Information empowerment: predeparture resource training for students in global health.

Science.gov (United States)

Rana, Gurpreet K

2014-04-01

The Taubman Health Sciences Library (THL) collaborates with health sciences schools to provide information skills instruction for students preparing for international experiences. THL enhances students' global health learning through predeparture instruction for students who are involved in global health research, clinical internships, and international collaborations. This includes teaching international literature searching skills, providing country-specific data sources, building awareness of relevant mobile resources, and encouraging investigation of international news. Information skills empower creation of stronger global partnerships. Use of information resources has enhanced international research and training experiences, built lifelong learning foundations, and contributed to the university's global engagement. THL continues to assess predeparture instruction.

Hydraulic shock absorbers

International Nuclear Information System (INIS)

Thatcher, G.; Davidson, D. F.

1984-01-01

A hydraulic shock absorber of the dash pot kind for use with electrically conducting liquid such as sodium, has magnet means for electro magnetically braking a stream of liquid discharged from the cylinder. The shock absorber finds use in a liquid metal cooled nuclear reactor for arresting control rods

Making the informal formal: An examination of why and how teachers and students leverage experiences in informal learning environments

Science.gov (United States)

Schneider, Barbara P.

This study was an effort to understand the impact of informal learning environments (museums, aquaria, nature centers, and outdoor education programs) on school groups by developing a picture of why and how teachers and their students leverage experiences in these settings. This work relied on the self-reported visions for science education of formal and informal teachers as a means of creating a portrait or profile of the teacher visitor thus providing a new way to assess the quality of informal visits based on vision elements. Multi-level, year long case studies at six school sites and their partnering informal centers that included multiple interviews, observations (250 hours) of both school based and field trip activities, as well as focus group interviews with students two months past their field trip experience comprised the bulk of data collection activities. In addition to this more intensive work with case study teachers data was gathered from a broader group of participants through surveys (n = 396) and one-time classroom teacher interviews (n = 36) in an effort to validate or confirm case study findings. I discovered that central to informal and formal teachers' visions was a view of education as empowerment. I explored such goals as empowering students to conceive of themselves and their worlds differently, empowering students by sharing responsibility for what and how they learn, and empowering students by creating environments where everyone can contribute meaningfully. Much of what classroom teachers did to leverage the informal experience in supporting their visions of education related to these goals. For example teachers used shared experiences in informal settings as a way for their students to gain better access to and understanding of the classroom curriculum thereby increasing student participation and allowing more students to be successful. They also changed their approach to content by basing the classroom curriculum on students' interests

Reflection measurements of microwave absorbers

Science.gov (United States)

Baker, Dirk E.; van der Neut, Cornelis A.

1988-12-01

A swept-frequency interferometer is described for making rapid, real-time assessments of localized inhomogeneities in planar microwave absorber panels. An aperture-matched exponential horn is used to reduce residual reflections in the system to about -37 dB. This residual reflection is adequate for making comparative measurements on planar absorber panels whose reflectivities usually fall in the -15 to -25 dB range. Reflectivity measurements on a variety of planar absorber panels show that multilayer Jaumann absorbers have the greatest inhomogeneity, while honeycomb absorbers generally have excellent homogeneity within a sheet and from sheet to sheet. The test setup is also used to measure the center frequencies of resonant absorbers. With directional couplers and aperture-matched exponential horns, the technique can be easily applied in the standard 2 to 40 GHz waveguide bands.

ACADEMIC MOTIVATION FOR BUSINESS INFORMATION SYSTEMS STUDENTS

Directory of Open Access Journals (Sweden)

Catalin Maican

2015-05-01

Full Text Available Academic Motivation Scale (AMS was applied to Business Information Systems students for finding out their reasons and motives for enrolling this academic field, for undergraduate and postgraduate academic cycles. The students were presented the AMS scale translated in Romanian, together with other questionnaires. The first part of the paper makes a short introduction to AMS, the second describes its objectives, while the third presents the results.

Handling Internet-Based Health Information: Improving Health Information Web Site Literacy Among Undergraduate Nursing Students.

Science.gov (United States)

Wang, Weiwen; Sun, Ran; Mulvehill, Alice M; Gilson, Courtney C; Huang, Linda L

2017-02-01

Patient care problems arise when health care consumers and professionals find health information on the Internet because that information is often inaccurate. To mitigate this problem, nurses can develop Web literacy and share that skill with health care consumers. This study evaluated a Web-literacy intervention for undergraduate nursing students to find reliable Web-based health information. A pre- and postsurvey queried undergraduate nursing students in an informatics course; the intervention comprised lecture, in-class practice, and assignments about health Web site evaluation tools. Data were analyzed using Wilcoxon and ANOVA signed-rank tests. Pre-intervention, 75.9% of participants reported using Web sites to obtain health information. Postintervention, 87.9% displayed confidence in using an evaluation tool. Both the ability to critique health Web sites (p = .005) and confidence in finding reliable Internet-based health information (p = .058) increased. Web-literacy education guides nursing students to find, evaluate, and use reliable Web sites, which improves their ability to deliver safer patient care. [J Nurs Educ. 2017;56(2):110-114.]. Copyright 2017, SLACK Incorporated.

Corrosion resistant neutron absorbing coatings

Science.gov (United States)

Choi, Jor-Shan [El Cerrito, CA; Farmer, Joseph C [Tracy, CA; Lee, Chuck K [Hayward, CA; Walker, Jeffrey [Gaithersburg, MD; Russell, Paige [Las Vegas, NV; Kirkwood, Jon [Saint Leonard, MD; Yang, Nancy [Lafayette, CA; Champagne, Victor [Oxford, PA

2012-05-29

A method of forming a corrosion resistant neutron absorbing coating comprising the steps of spray or deposition or sputtering or welding processing to form a composite material made of a spray or deposition or sputtering or welding material, and a neutron absorbing material. Also a corrosion resistant neutron absorbing coating comprising a composite material made of a spray or deposition or sputtering or welding material, and a neutron absorbing material.

Applied information system-based in enhancing students' understanding towards higher order thinking (HOTS)

Science.gov (United States)

Hua, Ang Kean; Ping, Owi Wei

2017-05-01

The application of information and communications technology (ICT) had become more important in our daily life, especially in educational field. Teachers are encouraged to use information system-based in teaching Mathematical courses. Higher Order Thinking Skills (HOTS) approach is unable to explain using chalk and talk methods. It needs students to analyze, evaluate, and create by their own natural abilities. The aim of this research study was to evaluate the effectiveness of the application information system-based in enhance the students understanding about HOTS question. Mixed-methods or quantitative and qualitative approach was applied in collecting data, which involve only the standard five students and the teachers in Sabak Bernam, Selangor. Pra-postests was held before and after using information system-based in teaching to evaluate the students' understanding. The result from post-test indicates significant improvement which proves that the use of information system based able to enhance students' understanding about HOTS question and solve it. There were several factor influenced the students such as students' attitude, teachers attraction, school facilities, and computer approach. Teachers play an important role in attracting students to learn. Therefore, the school should provide a conducive learning environment and good facilities for students to learn so that they are able to access more information and always exposed to new knowledge. As conclusion, information system-based are able to enhance students understanding the need of HOTS questions and solve it.

Finding foundations: A model for information literacy assessment of first-year students

Directory of Open Access Journals (Sweden)

Zoe Fisher

2017-08-01

Full Text Available In Brief This article presents a case study in establishing an information literacy instruction and assessment program for first-year university students at the University of Colorado Denver. Rather than presenting assessment data, we document the process in which our department engaged with the student learning assessment cycle, with the intention of allowing other information literacy professionals to see how we established an instruction program for first-year English Composition. We include a description of in-class exercises, rubrics, and the procedures we followed in order to assess the foundational information literacy skills of first-year students on our campus. This assessment was not conducted to demonstrate what students learned from librarians (thereby illustrating the value of library instruction. Rather, we assessed student learning to ascertain the information literacy skills students bring with them into a first-year English Composition course.

PWR burnable absorber evaluation

International Nuclear Information System (INIS)

Cacciapouti, R.J.; Weader, R.J.; Malone, J.P.

1995-01-01

The purpose of the study was to evaluate the relative neurotic efficiency and fuel cycle cost benefits of PWR burnable absorbers. Establishment of reference low-leakage equilibrium in-core fuel management plans for 12-, 18- and 24-month cycles. Review of the fuel management impact of the integral fuel burnable absorber (IFBA), erbium and gadolinium. Calculation of the U 3 O 8 , UF 6 , SWU, fuel fabrication, and burnable absorber requirements for the defined fuel management plans. Estimation of fuel cycle costs of each fuel management plan at spot market and long-term market fuel prices. Estimation of the comparative savings of the different burnable absorbers in dollar equivalent per kgU of fabricated fuel. (author)

Multi-channel coherent perfect absorbers

KAUST Repository

Bai, Ping

2016-05-18

The absorption efficiency of a coherent perfect absorber usually depends on the phase coherence of the incident waves on the surfaces. Here, we present a scheme to create a multi-channel coherent perfect absorber in which the constraint of phase coherence is loosened. The scheme has a multi-layer structure such that incident waves in different channels with different angular momenta can be simultaneously and perfectly absorbed. This absorber is robust in achieving high absorption efficiency even if the incident waves become "incoherent" and possess "random" wave fronts. Our work demonstrates a unique approach to designing highly efficient metamaterial absorbers. © CopyrightEPLA, 2016.

Multi-channel coherent perfect absorbers

KAUST Repository

Bai, Ping; Wu, Ying; Lai, Yun

2016-01-01

The absorption efficiency of a coherent perfect absorber usually depends on the phase coherence of the incident waves on the surfaces. Here, we present a scheme to create a multi-channel coherent perfect absorber in which the constraint of phase coherence is loosened. The scheme has a multi-layer structure such that incident waves in different channels with different angular momenta can be simultaneously and perfectly absorbed. This absorber is robust in achieving high absorption efficiency even if the incident waves become "incoherent" and possess "random" wave fronts. Our work demonstrates a unique approach to designing highly efficient metamaterial absorbers. © CopyrightEPLA, 2016.

Feynman Integrals with Absorbing Boundaries

OpenAIRE

Marchewka, A.; Schuss, Z.

1997-01-01

We propose a formulation of an absorbing boundary for a quantum particle. The formulation is based on a Feynman-type integral over trajectories that are confined to the non-absorbing region. Trajectories that reach the absorbing wall are discounted from the population of the surviving trajectories with a certain weighting factor. Under the assumption that absorbed trajectories do not interfere with the surviving trajectories, we obtain a time dependent absorption law. Two examples are worked ...

Emerging Information Literacy and Research-Method Competencies in Urban Community College Psychology Students

Science.gov (United States)

Wolfe, Kate S.

2015-01-01

This article details an assignment developed to teach students at urban community colleges information-literacy skills. This annotated bibliography assignment introduces students to library research skills, helps increase information literacy in beginning college students, and helps psychology students learn research methodology crucial in…

Efficacy of integrating information literacy education into a women's health course on information literacy for RN-BSN students.

Science.gov (United States)

Ku, Ya-Lie; Sheu, Sheila; Kuo, Shih-Ming

2007-03-01

Information literacy, essential to evidences-based nursing, can promote nurses' capability for life-long learning. Nursing education should strive to employ information literacy education in nursing curricula to improve information literacy abilities among nursing students. This study explored the effectiveness of information literacy education by comparing information literacy skills among a group of RN-BSN (Registered Nurse to Bachelors of Science in Nursing) students who received information literacy education with a group that did not. This quasi-experimental study was conducted during a women's health issues course taught between March and June 2004. Content was presented to the 32 RN-BSN students enrolled in this course, which also taught skills on searching and screening, integrating, analyzing, applying, and presenting information. At the beginning and end of the program, 75 RN-BSN student self-evaluated on a 10 point Likert scale their attained skills in searching and screening, integrating, analyzing, applying, and presenting information. Results identified no significant differences between the experimental (n = 32) and control groups (n = 43) in terms of age, marital status, job title, work unit, years of work experience, and information literacy skills as measured at the beginning of the semester. At the end of the semester during which content was taught, the information literacy of the experimental group in all categories, with the exception of information presentation, was significantly improved as compared to that of the control group. Results were especially significant in terms of integrating, analyzing, and applying skill categories. It is hoped that in the future nursing students will apply enhanced information literacy to address and resolve patients' health problems in clinical settings.

Student Perceptions in Teaching Principles of Management Information Systems

Science.gov (United States)

Rob, Mohammad A.; Etnyre, Vance

2015-01-01

Teaching concepts of information systems to general business students through a course such as management information systems (MIS) can be challenging in today's fast-changing environment of information technology (IT). Such a course must provide not only an understanding of the development, applications, and management of information systems, but…

Visible light broadband perfect absorbers

Energy Technology Data Exchange (ETDEWEB)

Jia, X. L.; Meng, Q. X.; Yuan, C. X.; Zhou, Z. X.; Wang, X. O., E-mail: wxo@hit.edu.cn [School of Science, Harbin Institute of Technology, Harbin 150001 (China)

2016-03-15

The visible light broadband perfect absorbers based on the silver (Ag) nano elliptical disks and holes array are studied using finite difference time domain simulations. The semiconducting indium silicon dioxide thin film is introduced as the space layer in this sandwiched structure. Utilizing the asymmetrical geometry of the structures, polarization sensitivity for transverse electric wave (TE)/transverse magnetic wave (TM) and left circular polarization wave (LCP)/right circular polarization wave (RCP) of the broadband absorption are gained. The absorbers with Ag nano disks and holes array show several peaks absorbance of 100% by numerical simulation. These simple and flexible perfect absorbers are particularly desirable for various potential applications including the solar energy absorber.

The Whole Student: Cognition, Emotion, and Information Literacy

Science.gov (United States)

Matteson, Miriam L.

2014-01-01

Information literacy skill acquisition is a form of learning that is influenced by cognitive, emotional, and social processes. This research studied how two emotional constructs (emotional intelligence and dispositional affect) and two cognitive constructs (motivation and coping skills) interacted with students' information literacy scores. Two…

Affective Experiences of International and Home Students during the Information Search Process

Science.gov (United States)

Haley, Adele Nicole; Clough, Paul

2017-01-01

An increasing number of students are studying abroad requiring that they interact with information in languages other than their mother tongue. The UK in particular has seen a large growth in international students within Higher Education. These nonnative English speaking students present a distinct user group for university information services,…

Information and strategic Internet skills of secondary students: A performance test

NARCIS (Netherlands)

van Deursen, Alexander Johannes Aloysius Maria; van Diepen, S.

2013-01-01

In this study, the information and strategic Internet skills of Dutch secondary students were measured in a performance test. Participating students were asked to complete assignments on the Internet. The findings reveal that the levels of both information and strategic Internet skills have much

Debunking the Librarian "Gene": Designing Online Information Literacy Instruction for Incoming Library Science Students

Science.gov (United States)

Lamb, Annette

2017-01-01

Information workers are not born information fluent. Like other students, incoming library science students enter graduate programs with a broad range of information and technology skills. The aim of this study was to determine if systematically designed online tutorials would be effective in preparing university students with information literacy…

Optimization of sound absorbing performance for gradient multi-layer-assembled sintered fibrous absorbers

Science.gov (United States)

Zhang, Bo; Zhang, Weiyong; Zhu, Jian

2012-04-01

The transfer matrix method, based on plane wave theory, of multi-layer equivalent fluid is employed to evaluate the sound absorbing properties of two-layer-assembled and three-layer-assembled sintered fibrous sheets (generally regarded as a kind of compound absorber or structures). Two objective functions which are more suitable for the optimization of sound absorption properties of multi-layer absorbers within the wider frequency ranges are developed and the optimized results of using two objective functions are also compared with each other. It is found that using the two objective functions, especially the second one, may be more helpful to exert the sound absorbing properties of absorbers at lower frequencies to the best of their abilities. Then the calculation and optimization of sound absorption properties of multi-layer-assembled structures are performed by developing a simulated annealing genetic arithmetic program and using above-mentioned objective functions. Finally, based on the optimization in this work the thoughts of the gradient design over the acoustic parameters- the porosity, the tortuosity, the viscous and thermal characteristic lengths and the thickness of each samples- of porous metals are put forth and thereby some useful design criteria upon the acoustic parameters of each layer of porous fibrous metals are given while applying the multi-layer-assembled compound absorbers in noise control engineering.

Majoring in Information Systems: Reasons Why Students Select (or Not) Information Systems as a Major

Science.gov (United States)

Snyder, Johnny; Slauson, Gayla Jo

2014-01-01

Filling the pipeline for information systems workers is critical in the information era. Projected growth rates for jobs requiring information systems expertise are significantly higher than the projected growth rates for other jobs. Why then do relatively few students choose to major in information systems? This paper reviews survey results from…

Neutron Absorbing Ability Variation in Neutron Absorbing Material Caused by the Neutron Irradiation in Spent Fuel Storage Facility

Energy Technology Data Exchange (ETDEWEB)

Sohn, Hee Dong; Han, Seul Gi; Lee, Sang Dong; Kim, Ki Hong; Ryu, Eag Hyang; Park, Hwa Gyu [Doosan Heavy Industries and Construction, Changwon (Korea, Republic of)

2014-10-15

In spent fuel storage facility like high density spent fuel storage racks and dry storage casks, spent fuels are stored with neutron absorbing materials installed as a part of those facilities, and they are used for absorbing neutrons emitted from spent fuels. Usually structural material with neutron absorbing material of racks and casks are located around spent fuels, so it is irradiated by neutrons for long time. Neutron absorbing ability could be changed by the variation of nuclide composition in neutron absorbing material caused by the irradiation of neutrons. So, neutron absorbing materials are continuously faced with spent fuels with boric acid solution or inert gas environment. Major nuclides in neutron absorbing material are Al{sup 27}, C{sup 12}, B{sup 11}, B{sup 10} and they are changed to numerous other ones as radioactive decay or neutron absorption reaction. The B{sup 10} content in neutron absorbing material dominates the neutron absorbing ability, so, the variation of nuclide composition including the decrease of B{sup 10} content is the critical factor on neutron absorbing ability. In this study, neutron flux in spent fuel, the activation of neutron absorbing material and the variation of nuclide composition are calculated. And, the minimum neutron flux causing the decrease of B{sup 10} content is calculated in spent fuel storage facility. Finally, the variation of neutron multiplication factor is identified according to the one of B{sup 10} content in neutron absorbing material. The minimum neutron flux to impact the neutron absorbing ability is 10{sup 10} order, however, usual neutron flux from spent fuel is 10{sup 8} order. Therefore, even though neutron absorbing material is irradiated for over 40 years, B{sup 10} content is little decreased, so, initial neutron absorbing ability could be kept continuously.

The information needs of occupational therapy students: a case study.

Science.gov (United States)

Morgan-Daniel, Jane; Preston, Hugh

2017-06-01

This article summarises a case study on the information needs of Masters level Occupational Therapy 5 (OT) students at one English university. A mixed methods questionnaire was used to explore motivators for information-seeking, preferred information resources and barriers inhibiting the satisfaction of information needs. Thirteen recommendations for practice were formulated, focusing on how information professionals can best facilitate OT students' learning and evidence-based research skills in preparation for clinical practice. The study was completed by Jane Morgan-Daniel, who received a Distinction for her work from Aberystwyth University, where she graduated with an MSC in Information and Library Studies in December 2016. She has written this article together with her dissertation supervisor, Hugh Preston. A. M. © 2017 Health Libraries Group.

Visualising the invisible: a network approach to reveal the informal social side of student learning.

Science.gov (United States)

Hommes, J; Rienties, B; de Grave, W; Bos, G; Schuwirth, L; Scherpbier, A

2012-12-01

World-wide, universities in health sciences have transformed their curriculum to include collaborative learning and facilitate the students' learning process. Interaction has been acknowledged to be the synergistic element in this learning context. However, students spend the majority of their time outside their classroom and interaction does not stop outside the classroom. Therefore we studied how informal social interaction influences student learning. Moreover, to explore what really matters in the students learning process, a model was tested how the generally known important constructs-prior performance, motivation and social integration-relate to informal social interaction and student learning. 301 undergraduate medical students participated in this cross-sectional quantitative study. Informal social interaction was assessed using self-reported surveys following the network approach. Students' individual motivation, social integration and prior performance were assessed by the Academic Motivation Scale, the College Adaption Questionnaire and students' GPA respectively. A factual knowledge test represented student' learning. All social networks were positively associated with student learning significantly: friendships (β = 0.11), providing information to other students (β = 0.16), receiving information from other students (β = 0.25). Structural equation modelling revealed a model in which social networks increased student learning (r = 0.43), followed by prior performance (r = 0.31). In contrast to prior literature, students' academic motivation and social integration were not associated with students' learning. Students' informal social interaction is strongly associated with students' learning. These findings underline the need to change our focus from the formal context (classroom) to the informal context to optimize student learning and deliver modern medics.

Students' access usage and awareness of electronic information ...

African Journals Online (AJOL)

Students' access usage and awareness of electronic information resources at the University College Hospital, University of Ibadan, Nigeria. RA Ojo, SO Akande. Abstract. No Abstract. Lagos Journal of Library and Information Science Vol. 3(1) 2005: 16-24. Full Text: EMAIL FULL TEXT EMAIL FULL TEXT · DOWNLOAD ...

Selecting and Using Information Sources: Source Preferences and Information Pathways of Israeli Library and Information Science Students

Science.gov (United States)

Bronstein, Jenny

2010-01-01

Introduction: The study investigated the source preference criteria of library and information science students for their academic and personal information needs. Method: The empirical study was based on two methods of data collection. Eighteen participants wrote a personal diary for four months in which they recorded search episodes and answered…

Sound Absorbers

Science.gov (United States)

Fuchs, H. V.; Möser, M.

Sound absorption indicates the transformation of sound energy into heat. It is, for instance, employed to design the acoustics in rooms. The noise emitted by machinery and plants shall be reduced before arriving at a workplace; auditoria such as lecture rooms or concert halls require a certain reverberation time. Such design goals are realised by installing absorbing components at the walls with well-defined absorption characteristics, which are adjusted for corresponding demands. Sound absorbers also play an important role in acoustic capsules, ducts and screens to avoid sound immission from noise intensive environments into the neighbourhood.

Patterns of Information Seeking Behaviour of Law Students in Digital Environment: A Study

Directory of Open Access Journals (Sweden)

Das, Rajesh Kumar

2017-03-01

Full Text Available Nowadays the enormous growth of modern information communication technologies and its massive use have influenced information users all over the world. Such a digital environment has drastically changed the information seeking patterns of information users of every community. These also tend law students to use various legal information sources and services in digital environments while seeking information. But there have been few empirical user studies on the aspect of digital information seeking behaviours of law students in either law or library and information science literatures. This paper aims to draw out patterns of information seeking behavior of students of law in digital environments at the University of Dhaka. A stratified random sample survey was conducted for this study. The results show that students prefer the electronic format of information rather than printed format. Major e-resources used by them and the influential factors of use were also identified in this study. This study also identified some crucial problems for seeking information and provides suggestions for the development of electronic legal information systems.

A Case Study of Periodical Use by Library and Information Science Students

Science.gov (United States)

Ivins, Tammy

2013-01-01

There is a lack of information in the literature about the sources used for research by modern Master of Library and Information Science students in the United States, and so the objective of this project is to understand the use of periodical articles by these students. Specifically: do articles play a major role in student research, how current…

Distance Students and Online Research: Promoting Information Literacy through Media Literacy

Science.gov (United States)

Van de Vord, Rebecca

2010-01-01

Today's college students, particularly distance students, are increasingly dependent on the Web for their research needs. At the same time they lack the critical thinking skills required to successfully evaluate the actual credibility of online information, a critical aspect of information literacy. Furthermore, rather than access the online…

Tacit Information Literacies in Beginning College Students: Research Pedagogy in Geography

Science.gov (United States)

Bauch, Nicholas; Sheldon, Christina

2014-01-01

Whereas instruction on how to conduct original research can build on beginning college students' tacit information literacies, the explicit articulation of existing processes for information gathering is rarely elicited by instructors prior to students' submission of a final research paper. In this essay, authors Nicholas Bauch and Christina…

The Effect of Students' Perceptions of Internet Information Quality on Their Use of Internet Information in Inquiry-Based Learning

Science.gov (United States)

Pow, Jacky; Li, Sandy C.

2015-01-01

In Web 2.0 environments, the quality of published information can vary significantly and much of the information on the Internet is unproven. This unverified information hinders rather than facilitates student learning, especially among undergraduate students who depend heavily on Internet resources for their studies. Currently, we do not have…

Absorbable magnesium-based stent: physiological factors to consider for in vitro degradation assessments.

Science.gov (United States)

Wang, Juan; Smith, Christopher E; Sankar, Jagannathan; Yun, Yeoheung; Huang, Nan

2015-03-01

Absorbable metals have been widely tested in various in vitro settings using cells to evaluate their possible suitability as an implant material. However, there exists a gap between in vivo and in vitro test results for absorbable materials. A lot of traditional in vitro assessments for permanent materials are no longer applicable to absorbable metallic implants. A key step is to identify and test the relevant microenvironment and parameters in test systems, which should be adapted according to the specific application. New test methods are necessary to reduce the difference between in vivo and in vitro test results and provide more accurate information to better understand absorbable metallic implants. In this investigative review, we strive to summarize the latest test methods for characterizing absorbable magnesium-based stent for bioabsorption/biodegradation behavior in the mimicking vascular environments. Also, this article comprehensively discusses the direction of test standardization for absorbable stents to paint a more accurate picture of the in vivo condition around implants to determine the most important parameters and their dynamic interactions.

Informing Instruction of Students with Autism in Public School Settings

Science.gov (United States)

Kuo, Nai-Cheng

2016-01-01

The number of applied behavior analysis (ABA) classrooms for students with autism is increasing in K-12 public schools. To inform instruction of students with autism in public school settings, this study examined the relation between performance on mastery learning assessments and standardized achievement tests for students with autism spectrum…

Informing Educational Psychology Training with Students' Community Engagement Experiences

Science.gov (United States)

Ebersohn, Liesel; Bender, C. J. Gerda; Carvalho-Malekane, Wendy M.

2010-01-01

The purpose of this article was to describe students' experiences of community engagement in an Educational Psychology practicum in order to inform relevant educational psychology training literature with experiences of students' community engagement. Experiential learning served as our theoretical framework and we employed an instrumental case…

Student Affairs and Information Technology: Collaborating in the Cloud

Science.gov (United States)

Barbatis, Peter Reyes

2014-01-01

Student affairs and information technology have opportunities to partner in order to increase student satisfaction and retention rates and to assist institutions to comply with federal educational regulations. This chapter contains four examples of emerging best practices and future initiatives including: (a) the admissions pipeline, (b)…

Access to electronic information resources by students of federal ...

African Journals Online (AJOL)

The paper discusses access to electronic information resources by students of Federal Colleges of Education in Eha-Amufu and Umunze. Descriptive survey design was used to investigate sample of 526 students. Sampling technique used was a Multi sampling technique. Data for the study were generated using ...

Internet Use for Health Information among College Students.

Science.gov (United States)

Escoffery, Cam; Miner, Kathleen R.; Adame, Daniel D.; Butler, Susan; McCormick, Laura; Mendell, Elizabeth

2005-01-01

Use of the Internet to retrieve health information is increasingly common. The authors surveyed 743 undergraduate students at 2 academic institutions to examine their Internet use, health-seeking behaviors, and attitudes related to the use of the Internet to obtain health information. Fifty-three percent of the respondents indicated that they…

Neutron absorbing article

International Nuclear Information System (INIS)

Naum, R.G.; Owens, D.P.; Dooher, G.I.

1979-01-01

A neutron absorbing article, in flat plate form and suitable for use in a storage rack for spent fuel, includes boron carbide particles, diluent particles and a solid, irreversibly cured phenolic polymer cured to a continuous matrix binding the boron carbide and diluent particles. The total conent of boron carbide and diluent particles is a major proportion of the article and the content of cured phenolic polymer present is a minor proportion. By regulation of the ratio of boron carbide particles to diluent particles, normally within the range of 1:9 and 9:1 and preferably within the range of 1:5 to 5:1, the neutron absorbing activity of the product may be controlled, which facilitates the manufacture of articles of particular absorbing activities best suitable for specific applications

Information literacy in science writing: how students find, identify, and use scientific literature

Science.gov (United States)

Klucevsek, Kristin M.; Brungard, Allison B.

2016-11-01

For undergraduate students to achieve science literacy, they must first develop information literacy skils. These skills align with Information Literacy Standards and include determining appropriate databases, distinguishing among resource types, and citing resources ethically. To effectively improve information literacy and science literacy, we must identify how students interact with authentic scientific texts. In this case study, we addressed this aim by embedding a science librarian into a science writing course, where students wrote a literature review on a research topic of their choice. Library instruction was further integrated through the use of an online guide and outside assistance. To evaluate the evolution of information literacy in our students and provide evidence of student practices, we used task-scaffolded writing assessments, a reflection, and surveys. We found that students improved their ability and confidence in finding research articles using discipline-specific databases as well as their ability to distinguish primary from secondary research articles. We also identified ways students improperly used and cited resources in their writing assignments. While our results reveal a better understanding of how students find and approach scientific research articles, additional research is needed to develop effective strategies to improve long-term information literacy in the sciences.

On the Development of College Student Information Management System

Directory of Open Access Journals (Sweden)

Jin Anjiang

2015-01-01

Full Text Available currently there exist severe fragmentation, different development standards, lack of sufficient support and other problems in the development of college student information management system. Therefore accelerating the development of student information management system is of necessity to improve universities’ management and administration efficiency. From the perspective of customers’ demands, the system should be designed and developed on the basis of Web Service by adopting B/S structure and SQL Server technology so as to coordinate applicability, security, compatibility, stability, maintainability and other non-functional demands.

How Students Learn: Information Processing, Intellectual Development and Confrontation

Science.gov (United States)

Entwistle, Noel

1975-01-01

A model derived from information processing theory is described, which helps to explain the complex verbal learning of students and suggests implications for lecturing techniques. Other factors affecting learning, which are not covered by the model, are discussed in relationship to it: student's intellectual development and effects of individual…

Impacting Student Perceptions about Careers in Information Systems

Science.gov (United States)

Walstrom, Kent A.; Schambach, Thomas P.

2012-01-01

A shortage of graduates prepared to fill the available jobs in Information Systems remains. Previous studies have verified the shortage and attempted to explain why students do not major in Information Technology related fields. Since prior studies identified lack of awareness regarding the discipline as a major reason in ignoring the major, the…

Fourth and fifth grade Latino(a) students making meaning of scientific informational texts

Science.gov (United States)

Croce, Keri-Anne

Using a socio-psycholinguistic perspective of literacy and a social-semiotic analysis of texts, this study investigates how six students made meaning of informational texts. The students came to school from a variety of English and Spanish language backgrounds. The research question being asked was 'How do Latino(a) fourth and fifth grade students make meaning of English informational texts?' Miscue analysis was used as a tool to investigate how students who have been labeled non-struggling readers by their classroom teacher and are from various language backgrounds approached five informational texts. In order to investigate students' responses to the nature of informational texts, this dissertation draws on commonly occurring structures within texts. Primary data collected included read alouds and retellings of five texts, retrospective miscue analysis, and interviews with six participant students. Two of these participants are discussed within this dissertation. Secondary data included classroom observations and teacher interviews. This study proposes that non-native speakers may use scientific concept placeholders as they transact with informational texts. The use of scientific concept placeholders by a reader indicates that the reader is engaged in the meaning making process and possesses evolving scientific knowledge about a phenomenon. The findings suggest that Latino(a) students' understandings of English informational texts is influenced not only by a student's language development but also (1) the nature of the text; (2) the reading strategies that a student uses, such as the use of placeholders; (3) the influence of the researcher during the aided retelling. This study contributes methodological tools to assess English language learners' reading. The conclusions presented within this study also support the idea that students from a variety of language backgrounds slightly altered their reliance on certain cuing systems as they encountered various sub

A Survey of Current Computer Information Science (CIS) Students.

Science.gov (United States)

Los Rios Community Coll. District, Sacramento, CA. Office of Institutional Research.

This document is a survey designed to be completed by current students of Computer Information Science (CIS) in the Los Rios Community College District (LRCCD), which consists of three community colleges: American River College, Cosumnes River College, and Sacramento City College. The students are asked about their educational goals and how…

Exploring Factors that Influence Students' Behaviors in Information Security

Science.gov (United States)

Yoon, Cheolho; Hwang, Jae-Won; Kim, Rosemary

2012-01-01

Due to the ever-increasing use of the Internet, information security has become a critical issue in society. This is especially the case for young adults who have different attitudes towards information security practices. In this research, we examine factors that motivate college students' information security behaviors. Based on the concept of…

Greek students' knowledge and sources of information regarding sex education.

Science.gov (United States)

Matziou, V; Perdikaris, P; Petsios, K; Gymnopoulou, E; Galanis, P; Brokalaki, H

2009-09-01

Human sexuality is a complex part of life and is considered a multidimensional phenomenon. Therefore there is an increased need for adequate and comprehensive sex education, especially for teenagers and young adults. The main aim of the study was to evaluate the level of students' sexual knowledge, as well as to identify their sources of information regarding sexual life and reproduction. A cross-sectional study using a designed self-report questionnaire was performed. The study population consisted of 936 students who were attending 10 high schools and four medical schools in Attica. Data were collected after obtaining permission from the Pedagogic Institute of the Greek Ministry of Education. The main sources of students' sexual information about reproduction were friends (29.1%) and parents (24.0%), whereas school was reported by 14.3% of them. The preferred sources of information, according to students' perceptions, were sex education specialists (65.6%), followed by school (39.1%), parents (32.2%) and friends (27.7%). The importance of school, peer and parent support upon adolescents' sexual life was revealed by the results of the study. Students' knowledge level on sex topics is not satisfactory and therefore there is a need for sex education specialists and special courses regarding sex education in Greek schools.

NASA's Bio-Inspired Acoustic Absorber Concept

Science.gov (United States)

Koch, L. Danielle

2017-01-01

Transportation noise pollutes our worlds cities, suburbs, parks, and wilderness areas. NASAs fundamental research in aviation acoustics is helping to find innovative solutions to this multifaceted problem. NASA is learning from nature to develop the next generation of quiet aircraft.The number of road vehicles and airplanes has roughly tripled since the 1960s. Transportation noise is audible in nearly all the counties across the US. Noise can damage your hearing, raise your heart rate and blood pressure, disrupt your sleep, and make communication difficult. Noise pollution threatens wildlife when it prevents animals from hearing prey, predators, and mates. Noise regulations help drive industry to develop quieter aircraft. Noise standards for aircraft have been developed by the International Civil Aviation Organization and adopted by the US Federal Aviation Administration. The US National Park Service is working with the Federal Aviation Administration to try to balance the demand for access to the parks and wilderness areas with preservation of the natural soundscape. NASA is helping by conceptualizing quieter, more efficient aircraft of the future and performing the fundamental research to make these concepts a reality someday. Recently, NASA has developed synthetic structures that can absorb sound well over a wide frequency range, and particularly below 1000 Hz, and which mimic the acoustic performance of bundles of natural reeds. We are adapting these structures to control noise on aircraft, and spacecraft. This technology might be used in many other industrial or architectural applications where acoustic absorbers have tight constraints on weight and thickness, and may be exposed to high temperatures or liquids. Information about this technology is being made available through reports and presentations available through the NASA Technical Report Server, http:ntrs.nasa.gov. Organizations who would like to collaborate with NASA or commercialize NASAs technology

Social Networking among Library and Information Science Undergraduate Students

Science.gov (United States)

Alakpodia, Onome Norah

2015-01-01

The purpose of this study was to examine social networking use among Library and Information Science students of the Delta State University, Abraka. In this study, students completed a questionnaire which assessed their familiarity with social networking sites, the purpose for which they use social networking site and their most preferred sites to…

Radiation sterilization of absorbent cotton and of absorbent gauze

International Nuclear Information System (INIS)

Hosobuchi, Kazunari; Oka, Mitsuru; Kaneko, Akira; Ishiwata, Hiroshi.

1986-01-01

The bioburden of absorbent cotton and of absorbent gauze and their physical and chemical characteristics after irradiation are investigated. The survey conducted on contaminants of 1890 cotton samples from 53 lots and 805 gauze samples from 56 lots showed maximum numbers of microbes per g of the cotton and gauze were 859 (an average of 21.4) and 777 (an average of 42.2), respectively. Isolation and microbiological and biochemical tests of representative microbes indicated that all of them, except one, were bacilli. The sterilization dose at 10 -6 of sterlity assurance level was found to be 2.0 Mrad when irradiated the spores loaded on paper strips and examined populations having graded D values from 0.10 to 0.28 Mrad. The sterilization dose would be about 1.5 Mrad if subjected the average numbers of contaminants observed in this study to irradiation. No significant differences were found between the irradiated samples and control up to 2 Mrad in tensile strength, change of color, absorbency, sedimentation rate, soluble substances, and pH of solutions used for immersion and other tests conventionally used. These results indicate that these products can be sterilized by irradiation. (author)

Information Literacy Advocates: developing student skills through a peer support approach.

Science.gov (United States)

Curtis, Ruth

2016-12-01

Since 2013/2014, an Information Literacy Advocates (ILA) scheme has been running at the University of Nottingham as an extracurricular module on the Nottingham Advantage Award programme. The Information Literacy Advocates scheme, which recruits medicine and health sciences students in their second year or above, aims to facilitate development of information literacy skills and confidence, as well as communication, organisation and teamwork, through the provision of peer support. Previous research indicates peer assistance effectively enhances such skills and is valued by fellow students who welcome the opportunity to approach more experienced students for help. This article, written by guest writer Ruth Curtis from the University of Nottingham, provides an overview of administering the ILA scheme and explores its impact on the Information Literacy Advocates, peers and librarians, and discusses future developments for taking the scheme forward. H. S. © 2016 Health Libraries Group.

Information technology industry certification's impact on undergraduate student perception of instructor effectiveness

Science.gov (United States)

Andersson, David L.

The field of Computer Information Systems (CIS) or Information Technology (IT) is experiencing rapid change. A 2003 study analyzing the IT degree programs and those of competing disciplines at 10 post-secondary institutions concluded that information technology programs are perceived differently from information systems and computer science programs and are significantly less focused on both math and pure science subjects. In Information Technology programs, voluntary professional certifications, generally known in the Information Technology field as "IT" certifications, are used as indicators of professional skill. A descriptive study noting one subject group's responses to items that were nearly identical except for IT certification information was done to investigate undergraduate CIS/IT student perceptions of IT industry certified instructors. The subject group was comprised of undergraduate CIS/IT students from a regionally accredited private institution and a public institution. The methodology was descriptive, based on a previous model by Dr. McKillip, Professor of Psychology, Southern Illinois University at Carbondale, utilizing a web-based survey instrument with a Likert scale, providing for voluntary anonymous responses outside the classroom over a ten day window. The results indicated that IT certification affected student perceptions of instructor effectiveness, teaching methodology, and student engagement in the class, and to a lesser degree, instructor technical qualifications. The implications suggest that additional research on this topic is merited. Although the study was not designed to examine the precise cause and effect, an important implication is that students may be motivated to attend classes taught by instructors they view as more confident and effective and that teachers with IT industry certification can better engage their students.

Investigate the relation between the media literacy and information literacy of students of communication science and information science and knowledge

Directory of Open Access Journals (Sweden)

Elham Esmaeil Pounaki

2017-03-01

Full Text Available The new millennium is called Information Age, in which information and communication technologies have been developed. The transfer from industrial society to information society has changed the form and level of education and information from those of the past times. In the past, literacy meant the ability of reading and writing, but today the meaning of literacy has been changed through the time and such a type of literacy is not enough to meet people’s needs in the industrial society of the 21st century. Today’s life requires media and information literacy especially for the students, whose duty is to research and who have a significant role in the development of their country from any perspective. This research aims to study the relation between the media literacy and information literacy of the students of the fields of communication science and information science and knowledge. This is an applied research in terms of its objective and uses a survey-correlation method. The statistical population of this research consists of the postgraduate students studying in the fields of study of information science and knowledge and communication science at Tehran University and Allameh Tabatabai University. The data required for this research were collected by a researcher-made questionnaire. The reliability of the questionnaire has been evaluated by Cronbach’s Alpha, which was equal to 0.936. The data were analyzed using descriptive and inferential statistic methods. The results showed that the level of media literacy and information literacy of students is desirable. There is a significant relationship between the economic status of students and their media literacy. However, the social status of students was directly related to their "ability to communicate" variable of media literacy. Also the Pearson correlation test showed a significant relationship between the variables of media literacy and information literacy.

Informal Mentoring for Lesbian, Gay, Bisexual, and Transgender Students

Science.gov (United States)

Mulcahy, Molly; Dalton, Sarah; Kolbert, Jered; Crothers, Laura

2016-01-01

The authors identified the process that 10 lesbian, gay, bisexual, and transgender (LGBT) high school students used to establish an informal adult-mentor relationship with a school personnel member. Five major themes emerged: (a) how LGBT students determined whether this person would be a safe mentor, (b) a listing of the important qualities of…

Engineers as Information Processors: A Survey of US Aerospace Engineering Faculty and Students.

Science.gov (United States)

Holland, Maurita Peterson; And Others

1991-01-01

Reports on survey results from 275 faculty and 640 students, predominantly in the aerospace engineering field, concerning their behaviors about the appropriation and dissemination of information. Indicates that, as information processors, aerospace faculty and students are "information naive." Raises questions about the efficacy of…

The Research on Informal Learning Model of College Students Based on SNS and Case Study

Science.gov (United States)

Lu, Peng; Cong, Xiao; Bi, Fangyan; Zhou, Dongdai

2017-03-01

With the rapid development of network technology, informal learning based on online become the main way for college students to learn a variety of subject knowledge. The favor to the SNS community of students and the characteristics of SNS itself provide a good opportunity for the informal learning of college students. This research first analyzes the related research of the informal learning and SNS, next, discusses the characteristics of informal learning and theoretical basis. Then, it proposed an informal learning model of college students based on SNS according to the support role of SNS to the informal learning of students. Finally, according to the theoretical model and the principles proposed in this study, using the Elgg and related tools which is the open source SNS program to achieve the informal learning community. This research is trying to overcome issues such as the lack of social realism, interactivity, resource transfer mode in the current network informal learning communities, so as to provide a new way of informal learning for college students.

Internet and information technology use by dental students in Chile.

Science.gov (United States)

Uribe, S; Mariño, R J

2006-08-01

As part of a larger cross-country survey of dental students, students from the School of Dentistry, The University of Valparaiso, were invited to participate in a study to describe their use of information and communication technology (ICT). Information was derived from a 124-item questionnaire which included 14 socio-demographic items and 29 items asking about ICT use. ICT items were derived from a University of Birmingham, UK, battery. Data was collected in July and August 2004. A total of 162 of the 249 dental students participated in the study. The average age of students was 21.0 years (SD 2.4 years). The majority of participants (62.1%) were female. All participants had access to a computer, and 96.4% used the Internet. Most students had home Internet connections (73.4%). The most commonly used Internet sites on at least a weekly basis were: email (92.2%); and search engines (88.3%). However, a very few (21.1%) used the Internet to search for dental information for their studies on at least a weekly basis. Furthermore, although the majority (70.4%) found Internet use easy/very easy, 56.2% indicated that any search for information was easy/very easy. The majority (72.2%) indicated that the use of virtual education would not affect their class attendance. The final multivariate model explained 26% of the variance in ICT use, significant predictors for ICT use were gender, year of study, level of difficulty in using Internet, and place of Internet use. However, Internet use was mostly for non-dental purposes.

Student chapters: effective dissemination networks for informal optics and photonics education

Science.gov (United States)

Fabian, Dirk; Vermeulen, Nathalie; Van Overmeire, Sara

2009-06-01

Professional societies sponsor student chapters in order to foster scholarship and training in photonics at the college and graduate level, but they are also an excellent resource for disseminating photonics knowledge to pre-college students and teachers. Starting in 2006, we tracked the involvement of SPIE student chapter volunteers in informal pre-college education settings. Chapter students reached 2800, 4900 and 11800 pre-college students respectively from 2006-2008 with some form of informal instruction in optics and photonics. As a case study, the EduKit, a self-contained instruction module featuring refractive and diffractive micro-optics developed by the European Network of Excellence on Micro-Optics (NEMO), was disseminated through student chapters in Argentina, Belgium, Canada, China, Colombia, India, Latvia, Mexico, Peru, Russia, Singapore, South Africa, and the United States. We tracked the movement of this material through the network, up to the student-teacher feedback stage. The student chapter network provided rapid dissemination of the material, translation of the material into the local language, and leveraged existing chapter contacts in schools to provide an audience. We describe the student chapter network and its impact on the development of the EduKit teaching module.

Preparation of Active Absorbent for Flue Gas Desulfurization From Coal Bottom Ash: Effect of Absorbent Preparation Variables

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Chang Chin Li, Lee Keat Teong, Subhash Bhatia and Abdul Rahman Mohamed

2012-08-01

Full Text Available An active absorbent for flue gas desulfurization was prepared from coal bottom ash, calcium oxide (CaO and calcium sulfate by hydro-thermal process. The absorbent was examined for its micro-structural properties. The experiments conducted were based on Design Of Experiments (DOE according to 23 factorial design. The effect of various absorbent preparation variables such as ratio of CaO to bottom ash (A, hydration temperature (B and hydration period (C towards the BET (Brunauer-Emmett-Teller specific surface area of the absorbent were studied. At a CaO to bottom ash ratio = 2, hydration temperature = 200 ?C and hydration period = 10 hrs, absorbent with a surface area of 90.1 m2/g was obtained. Based on the analysis of the factorial design, it was concluded that factor A and C as well as the interaction of factors ABC and BC are the significant factors that effect the BET surface area of the absorbent. A linear mathematical model that describes the relation between the independent variables and interaction between variables towards the BET specific surface area of the absorbent was also developed. Analysis of variance (ANOVA showed that the model was significant at 1% level.Key Words: Absorbent, Bottom Ash, Design Of Experiments, Desulfurization, Surface Area.

International Students Using Online Information Resources to Learn: Complex Experience and Learning Needs

Science.gov (United States)

Hughes, Hilary

2013-01-01

This paper reports the findings of a qualitative study that investigated 25 international students' use of online information resources for study purposes at two Australian universities. Using an expanded critical incident approach, the study viewed international students through an information literacy lens, as information-using learners. The…

Information Seeking Behavior & Information Resources Management:Mental Process Selecting Subjects & Identifying Information Needs Case study: Graduate Students in Women seminaries of Shiraz of Academic year 1393- 1394(

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Zohre Eftekhar

2016-08-01

Full Text Available The aim of this research is Information Resources Management: Mental Process Selecting Subjects &  Identifying Information Needs. The research method used in this study is a Quantitative method. Sampling is purposeful. This means that it includes graduate Students in Women seminaries of Shiraz who have information-seeking experience and are able to express their views and information needs. The sample was selected according to the random sampling method with Cochran formula from 710 students. According to this sampling method there is 241 Graduate Students included in 1392-1393 seminaries year of  Women seminaries of Shiraz. This is a survey research Which has been carried out by employing a questionnaire and SPSS for windows to analyze data. The results showed that students for selecting subjects,  identifying information needs used methods and media such as Prying Mind, reviewing of information resources, Consulting with subject specialists.

Distributions of 12 elements on 64 absorbers from simulated Hanford Neutralized Current Acid Waste (NCAW)

International Nuclear Information System (INIS)

Svitra, Z.V.; Bowen, S.M.; Marsh, S.F.

1994-12-01

As part of the Hanford Tank Waste Remediation System program at Los Alamos, we evaluated 64 commercially available or experimental absorber materials for their ability to remove hazardous components from high-level waste. These absorbers included cation and anion exchange resins, inorganic exchangers, composite absorbers, and a series of liquid extractants sorbed on porous support-beads. We tested these absorbers with a solution that simulates Hanford neutralized current acid waste (NCAW) (pH 14.2). To this simulant solution we added the appropriate radionuclides and used gamma spectrometry to measure fission products (Cs, Sr, Tc, and Y) and matrix elements (Cr, Co, Fe, Mn, Ni, V, Zn, and Zr). For each of 768 element/absorber combinations, we measured distribution coefficients for dynamic contact periods of 30 min, 2 h, and 6 h to obtain information about sorption kinetics. On the basis of these 2304 measured distribution coefficients, we determined that many of the tested absorbers may be suitable for processing NCAW solutions

Communication and information-seeking behavior of PhD students in physicists and astronomy

OpenAIRE

Jamali, Hamid R.

2006-01-01

As a part of a wider doctoral research, this paper deals with the communication and information-seeking behavior of research (PhD) students in physics and astronomy. Based on a qualitative case study of PhD students in the Department of Physics and Astronomy at University College London, this study seeks to derive behavioral patterns in information-seeking activities of PhD students. The study aims to investigate the intradisciplinary differences in information-seeking activities of physicist...

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 ...

The Effects of Using Geography Information Systems in Social Studies on Students Attitudes about Information Technology: Case of Ankara

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Nihat ŞİMŞEK

2011-12-01

Full Text Available The motivation and attention of students in the classroom are on the increase of using different methods. Like other lectures, in social studies using computers and information technologies is one of the methods that keeps the interest of students alive and increases participation of them. This study, aiming at measuring attitudes of 6th grade students to information technologies is conducted by using qualitative and quasi-experimental methods. The sample of this study is comprised by students of Cizmeci Elementary School, located in Ankara Kecioren. 33 students were chosen for experimental group and 35 students were chosen for control group, comprising a total of 68 students. As a result of the study, a significant difference between total computer attitude scale points of the pre and post-tests in both experimental and control groups was determined

Evaluation of e-learning course, Information Literacy, for medical students

OpenAIRE

Kratochvíl Jiří

2013-01-01

The main purpose of this article is to describe and to evaluate the results of evaluation of the e-learning course, Information Literacy, which is taught by the librarians at the Faculty of Medicine, Masaryk University. In the article the results are discussed to inform about the librarians' experience with tutoring the course. The survey covers the medical students who enrolled on the course between autumn 2008 and autumn 2010. The students were requested to fill the questionnaire designed i...

Chemical Information Literacy: pK[subscript a] Values--Where Do Students Go Wrong?

Science.gov (United States)

Flynn, Alison B.; Amellal, Delphine G.

2016-01-01

Chemical information literacy is an essential skillset for navigating, evaluating, and using the wealth of print and online information. Accordingly, efforts are underway to improve students' acquisition and mastery of this skillset. However, less is known about students' abilities related to finding and using chemical information to solve…

Burnable neutron absorbers

International Nuclear Information System (INIS)

Radford, K.C.; Carlson, W.G.

1983-01-01

A neutron-absorber body for use in burnable poison rods in a nuclear reactor. The body is composed of a matrix of Al 2 O 3 containing B 4 C, the neutron absorber. Areas of high density polycrystalline Al 2 O 3 particles are predominantly encircled by pores in some of which there are B 4 C particles. This body is produced by initially spray drying a slurry of A1 2 O 3 powder to which a binder has been added. The powder of agglomerated spheres of the A1 2 O 3 with the binder are dry mixed with B 4 C powder. The mixed powder is formed into a green body by isostatic pressure and the green body is sintered. The sintered body is processed to form the neutron-absorber body. In this case the B 4 C particles are separate from the spheres resulting from the spray drying instead of being embedded in the sphere

Neutron absorbers and methods of forming at least a portion of a neutron absorber

Energy Technology Data Exchange (ETDEWEB)

Guillen, Donna P; Porter, Douglas L; Swank, W David; Erickson, Arnold W

2014-12-02

Methods of forming at least a portion of a neutron absorber include combining a first material and a second material to form a compound, reducing the compound into a plurality of particles, mixing the plurality of particles with a third material, and pressing the mixture of the plurality of particles and the third material. One or more components of neutron absorbers may be formed by such methods. Neutron absorbers may include a composite material including an intermetallic compound comprising hafnium aluminide and a matrix material comprising pure aluminum.

Forming Information Competence of Technical Students in Context-Based Teaching

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G A Kruchinina

2011-12-01

Full Text Available The article considers the concept of information competence of technical students. The description of stages of forming structural components of information competence in context-based training is submitted. The results of the experiment on forming information competence of future metallurgists are given.

The perspectives and experiences of African American students in an informal science program

Science.gov (United States)

Bulls, Domonique L.

Science, technology, engineering, and mathematics (STEM) fields are the fastest growing sectors of the economy, nationally and globally. In order for the United States (U.S.) to maintain its competitiveness, it is important to address STEM experiences at the precollege level. In early years, science education serves as a foundation and pipeline for students to pursue STEM in college and beyond. Alternative approaches to instruction in formal classrooms have been introduced to engage more students in science. One alternative is informal science education. Informal science education is an avenue used to promote science education literacy. Because it is less regulated than science teaching in formal classroom settings, it allows for the incorporation of culture into science instruction. Culturally relevant science teaching is one way to relate science to African American students, a population that continually underperforms in K-12 science education. This study explores the science perspectives and experiences of African American middle school students participating in an informal science program. The research is framed by the tenets of culturally relevant pedagogy and shaped by the following questions: (1) What specific aspects of the Carver Program make it unique to African American students? (2) How is culturally relevant pedagogy incorporated into the informal science program? (3) How does the incorporation of culturally relevant pedagogy into the informal science program influence African American students' perceptions about science? The findings to the previously stated questions add to the limited research on African American students in informal science learning environments and contribute to the growing research on culturally relevant science. This study is unique in that it explores the cultural components of an informal science program.

Undergraduate Student Nurses' Use of Information and Communication Technology in Their Education.

Science.gov (United States)

Honey, Michelle

2018-01-01

Students expect to use technology in their study just as they use technology in other aspects of their life. Technology is embedded in the day-to-day work of nursing, and therefore needs to be integrated in education to prepare students to assume professional roles and develop skills for lifelong learning. A quantitative descriptive study, using an anonymous survey, explored how undergraduate student nurses from one New Zealand school of nursing, access information and communication technologies for their learning. In total 226 completed questionnaires were returned (75%). Nearly all students (96%) have smart phones, all students have a computer and 99% use the university learning management system daily or several times a week. The search engine most commonly used to find information for assignments was Google Scholar (91%), with only 78% using subject specific academic databases. Implications from this study include the need for charging stations and further education on information searching.

Information behaviour of graduate students: a qualitative user study

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Gorazd Vodeb

2004-01-01

Full Text Available The article presents a qualitative user study exploring information behaviour of graduate students. The study is conceptually based on Brenda Dervin’s Sense-Making Methodology. The information behaviour is conceptualised as a process. The author conducted 13 interviews using the time-line micro moment interview technique. Data were transcribed and then condensed using the ATLAS/ti program for qualitative analysis. The basic approach to the analysis was to compare the moments of sense making instances within the situation of the same actor and also a comparison of moments across situations of different actors. The characteristics of actors’ situations was described. The most intensive information activity of graduate students was found during the completion of their studies. The proposed model consisted of three successive types of gaps: topic selection gap, topic ignorance gap and literature collecting gap. The article also presents findings about the process of writing and information habits.

Effectiveness of training intervention to improve medical student's information literacy skills.

Science.gov (United States)

Abdekhoda, Mohammadhiwa; Dehnad, Afsaneh; Yousefi, Mahmood

2016-12-01

This study aimed to assess the efficiency of delivering a 4-month course of "effective literature search" among medical postgraduate students for improving information literacy skills. This was a cross-sectional study in which 90 postgraduate students were randomly selected and participated in 12 training sessions. Effective search strategies were presented and the students' attitude and competency concerning online search were measured by a pre- and post-questionnaires and skill tests. Data were analyzed by SPSS version 16 using t-test. There was a significant improvement (p=0.00), in student's attitude. The mean (standard deviation [SD]) was 2.9 (0.8) before intervention versus the mean (SD) 3.9 (0.7) after intervention. Students' familiarity with medical resources and databases improved significantly. The data showed a significant increase (p=0.03), in students' competency score concerning search strategy design and conducting a search. The mean (SD) was 2.04 (0.7) before intervention versus the mean (SD) 3.07 (0.8) after intervention. Also, students' ability in applying search and meta search engine improved significantly. This study clearly acknowledges that the training intervention provides considerable opportunity to improve medical student's information literacy skills.

Addressing Information Literacy through Student-Centered Learning

Science.gov (United States)

Bond, Paul

2016-01-01

This case study describes several courses that resulted from a teaching partnership between an instructional technologist/professor and a librarian that evolved over several semesters, and the information literacy implications of the course formats. In order to increase student engagement, active learning and inquiry-based learning techniques were…

Radioactive iodine absorbing properties of tetrathiafulvalene

Energy Technology Data Exchange (ETDEWEB)

Ito, Tomiyasu; Nakamura, Asao (Ajinomoto Co. Inc., Kawasaki, Kanagawa (Japan). Central Research Labs.); Nogawa, Norio; Oohashi, Kunio; Morikawa, Naotake

1989-05-01

For the purpose of searching some effective absorbents of gaseous radioactive iodine, 16 substances considered as having an affinity for iodine were investigated with regular iodine and /sup 125/I. In a preliminary survey, only tetrathiafulvalene (TTF) was found to have satisfactory absorbing properties comparable to activated charcoal. A further detailed comparison of the properties between TTF and activated charcoal led us to the conclusion that the former has more preferable properties as absorbent of radioactive iodine than the latter in all points studied. The results are summarized as follows: (1) The absorption of iodine on TTF in atmosphere was about twice as much as that on activated charcoal. Desorption of iodine from saturatedly absorbed iodine on TTF was practically negligible except trace amount of initial desorption, while that on activated charcoal was considerable (3%/50h) even in the air at room temperature. (2) Absorbed amount of iodine on activated charcoal decreased with increasing gaseous iodine concentration, air flow rate, on humidity of flowing-air. On the other hand, those factors scarcely affected that on TTF. Under an air flow rate of 1m/s, activated charcoal absorbs only 80% of iodine, while TTF absorbs more than 99%. (3) In flowing-air saturated with water vapor, iodine absorbed on activated charcoal was gradually liberated although by small amount (0.08%/100h), while that on TTF was much more stable for a long period (0.004%/100h). As a conclusion, TTF is considered to be useful as a quite effective radioactive iodine absorbent, especially in the case where protection from radioactive iodine should be serious, though it is expensive now. (author).

Radioactive iodine absorbing properties of tetrathiafulvalene

International Nuclear Information System (INIS)

Ito, Tomiyasu; Nakamura, Asao; Nogawa, Norio; Oohashi, Kunio; Morikawa, Naotake.

1989-01-01

For the purpose of searching some effective absorbents of gaseous radioactive iodine, 16 substances considered as having an affinity for iodine were investigated with regular iodine and 125 I. In a preliminary survey, only tetrathiafulvalene (TTF) was found to have satisfactory absorbing properties comparable to activated charcoal. A further detailed comparison of the properties between TTF and activated charcoal led us to the conclusion that the former has more preferable properties as absorbent of radioactive iodine than the latter in all points studied. The results are summarized as follows: (1) The absorption of iodine on TTF in atmosphere was about twice as much as that on activated charcoal. Desorption of iodine from saturatedly absorbed iodine on TTF was practically negligible except trace amount of initial desorption, while that on activated charcoal was considerable (3%/50h) even in the air at room temperature. (2) Absorbed amount of iodine on activated charcoal decreased with increasing gaseous iodine concentration, air flow rate, on humidity of flowing-air. On the other hand, those factors scarcely affected that on TTF. Under an air flow rate of 1m/s, activated charcoal absorbs only 80% of iodine, while TTF absorbs more than 99%. (3) In flowing-air saturated with water vapor, iodine absorbed on activated charcoal was gradually liberated although by small amount (0.08%/100h), while that on TTF was much more stable for a long period (0.004%/100h). As a conclusion, TTF is considered to be useful as a quite effective radioactive iodine absorbent, especially in the case where protection from radioactive iodine should be serious, though it is expensive now. (author)

Neutron absorbing article

International Nuclear Information System (INIS)

Naum, R.G.; Owens, D.P.; Dooker, G.I.

1981-01-01

A neutron-absorbing article suitable for use in spent fuel racks is described. It comprises boron carbide particles, diluent particles, and a phenolic polymer cured to a continuous matrix. The diluent may be silicon carbide, graphite, amorphous carbon, alumina, or silica. The combined boron carbide-diluent phase contains no more than 2 percent B 2 O 3 , and the neutron-absorbing article contains from 20 to 40 percent phenol resin. The ratio of boron carbide to diluent particles is in the range 1:9 to 9:1

Mechanical shock absorber

International Nuclear Information System (INIS)

Vrillon, Bernard.

1973-01-01

The mechanical shock absorber described is made of a constant thickness plate pierced with circular holes regularly distributed in such a manner that for all the directions along which the strain is applied during the shock, the same section of the substance forming the plate is achieved. The shock absorber is made in a metal standing up to extensive deformation before breaking, selected from a group comprising mild steels and austenitic stainless steels. This apparatus is used for handling pots of fast neutron reactor fuel elements [fr

APPROACHES TO STANDARDIZATION OF STUDENTS INFORMATION AND COMMUNICATION COMPETENCE DEVELOPMENT: THE POLISH EXPERIENCE

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Mariya P. Leshchenko

2014-09-01

Full Text Available In the article foreign, in particular, the Polish experience of diagnostic of students information and communication competencies is characterized. Foreign scientists focuse their modern searches on identifying students skills of using the Internet. Standards defined by Polish researchers are multifunctional and enable the determination of the cognitive, appraisal, creative and social students skills to function in the network. Structure of seven standards (literate and successful information search, critical evaluation of information, creation, transformation and presentation of information content, legal principles of creation and distribution of information content, empathy and imagemaking, security and privacy; participation in the online communities, their components and related parameters are characterized. General results of Polish scientists researches are presented.

Effect of Providing Information on Students' Knowledge and Concerns about Hydraulic Fracking.

Science.gov (United States)

Burger, Joanna; Nakata, Kimi; Liang, Laura; Pittfield, Taryn; Jeitner, Christian

2015-01-01

Governmental agencies, regulators, health professionals, and the public are faced with understanding and responding to new development practices and conditions in their local and regional environment. While hydraulic fracking (fracking) for shale gas has been practiced for over 50 years in some states, it is a relatively recent event in the northeastern United States. Providing environmental health information to the public about fracking requires understanding both the knowledge base and the perceptions of the public. The knowledge, perceptions, and concerns of college students about fracking were examined. Students were interviewed at Rutgers University in New Jersey, a state without any fracking, although fracking occurs in nearby Pennsylvania. Objectives were to determine (1) knowledge about fracking, (2) rating of concerns, (3) trusted information sources, (4) importance of fracking relative to other energy sources, and (5) the effect of a 15-min lecture and discussion on these aspects. On the second survey, students improved on their knowledge (except the components used for fracking), and their ratings changed for some concerns, perceived benefits, and trusted information sources. There was no change in support for further development of natural gas, but support for solar, wind, and wave energy decreased. Data suggest that students' knowledge and perceptions change with exposure to information, but many of these changes were due to students using the Internet to look up information immediately after the initial survey and lecture. Class discussions indicated a general lack of trust for several information sources available on the Web.

Flipped versus Traditional Classroom Information Literacy Sessions: Student Perceptions and Cognitions

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Torstein Låg

2016-12-01

Full Text Available Teaching effectively with limited classroom time is a challenge for information literacy teachers. In the flipped classroom (FC teaching model, information transmission teaching is delivered outside of class, freeing up class time for learning activities. I adopted the FC model in sessions that were previously taught using a traditional classroom (TC model. The aim of this paper is to evaluate the FC model's relative impact on (1 student perceptions of usefulness and quality, and (2 student cognitions about the IL sessions. Responses to evaluation forms from the TC model (N = 65, were compared to those from FC model (N = 78. Students judged usefulness and quality on two 4-point rating scales. Student cognitions were elicited with an open-ended question asking for suggestions for improvement and other comments. Responses to the latter were coded by an assistant blind to the conditions. Ratings were near ceiling and similar for both conditions. Responses to the open-ended question revealed interesting trends. Students in the FC condition provided wordier comments, were more concerned with what they themselves did and could do, and with the subject matter of the session. Students in the TC condition were more concerned with how information was presented to them. Results indicate that the FC teaching model is a viable alternative for IL sessions, and that it may encourage students to engage more with IL and their own learning process.

A survey of the use of electronic scientific information resources among medical and dental students

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Aarnio Matti

2006-05-01

Full Text Available Abstract Background To evaluate medical and dental students' utilization of electronic information resources. Methods A web survey sent to 837 students (49.9% responded. Results Twenty-four per cent of medical students and ninteen per cent of dental students searched MEDLINE 2+ times/month for study purposes, and thiry-two per cent and twenty-four per cent respectively for research. Full-text articles were used 2+ times/month by thirty-three per cent of medical and ten per cent of dental students. Twelve per cent of respondents never utilized either MEDLINE or full-text articles. In multivariate models, the information-searching skills among students were significantly associated with use of MEDLINE and full-text articles. Conclusion Use of electronic resources differs among students. Forty percent were non-users of full-text articles. Information-searching skills are correlated with the use of electronic resources, but the level of basic PC skills plays not a major role in using these resources. The student data shows that adequate training in information-searching skills will increase the use of electronic information resources.

Validation of the Mobile Information Software Evaluation Tool (MISET) With Nursing Students.

Science.gov (United States)

Secco, M Loretta; Furlong, Karen E; Doyle, Glynda; Bailey, Judy

2016-07-01

This study evaluated the Mobile Information Software Evaluation Tool (MISET) with a sample of Canadian undergraduate nursing students (N = 240). Psychometric analyses determined how well the MISET assessed the extent that nursing students find mobile device-based information resources useful and supportive of learning in the clinical and classroom settings. The MISET has a valid three-factor structure with high explained variance (74.7%). Internal consistency reliabilities were high for the MISET total (.90) and three subscales: Usefulness/Helpfulness, Information Literacy Support, and Use of Evidence-Based Sources (.87 to .94). Construct validity evidence included significantly higher mean total MISET, Helpfulness/Usefulness, and Information Literacy Support scores for senior students and those with higher computer competence. The MISET is a promising tool to evaluate mobile information technologies and information literacy support; however, longitudinal assessment of changes in scores over time would determine scale sensitivity and responsiveness. [J Nurs Educ. 2016;55(7):385-390.]. Copyright 2016, SLACK Incorporated.

Preferred Information Sources of High School Students for Community Colleges and Universities

Science.gov (United States)

Goff, Brent; Patino, Vanessa; Jackson, Gary

2004-01-01

To effectively communicate with potential students, it is important to utilize their preferred information sources. Survey data were gathered from 716 high school students who planned to attend college. There were communication source differences based on race and intent to attend two-year vs. four-year institutions. Important information sources…

Low Absorbance Measurements

Science.gov (United States)

Harris, T. D.; Williams, A. M.

1983-10-01

The application of low absorption measurements to dilute solute determination requires specific instrumental characteristics. The use of laser intracavity absorption and thermal lens calorimetry to measure concentration is shown. The specific operating parameters that determine sensitivity are delineated along with the limits different measurement strategies impose. Finally areas of improvement in components that would result in improve sensitivity, accuracy, and reliability are discussed. During the past decade, a large number of methods have been developed for measuring the light absorbed by transparent materials. These include measurements on gases, liquids, and solids. The activity has been prompted by a variety of applications and a similar variety of disciplines. In Table 1 some representative examples of these methods is shown along with their published detection limits.1 It is clear that extraordinarily small absorbances can be measured. Most of the methods can be conveniently divided into two groups. These groups are those that measure the transmission of the sample and those that measure the light absorbed by the sample. The light absorbed methods are calorimetric in character. The advantages and disadvantages of each method varies depending on the principal application for which they were developed. The most prevalent motivation has been to characterize the bulk optical properties of transparent materials. Two examples are the development of extremely transparent glasses for use as fiber optic materials and the development of substrates for high power laser operation.

Assessment of Student Outcomes in Undergraduate Health Information Administration Programs

OpenAIRE

Smith, Jody

2006-01-01

The purpose of this research was to a) determine what assessment methods are being used in undergraduate health information administration programs to assess student learning and the usefulness of those methods, b) determine to what extent programs have incorporated good student learning assessment practices. Programs use a variety of assessment tools to measure student learning; the most useful include assessments by the professional practice supervisor, course tests, assignments, presentati...

Role of cytogenetic techniques in biological dosimetry of absorbed radiation

International Nuclear Information System (INIS)

Rao, B.S.

2016-01-01

In most of the radiation accidents, physical dosimetric information is rarely available. Further, most of the accidental exposures are non-uniform involving either partial body or localized exposure to significant doses. In such situations, physical dosimetry does not provide reliable dose estimate. It has now been realized that biological dosimetric techniques can play an important role in the assessment of absorbed dose. In recent years, a number of biological indicators of radiation have been identified. These include the kinetics of onset and persistence of prodromal syndromes (radiation sickness), cytogenetic changes in peripheral blood lymphocytes, hematological changes, biochemical indicators, ESR spectroscopy of biological samples, induction of gene mutations in red blood cells, cytogenetic and physiological changes in skin and neurophysiological changes. In general, dosimetric information is derived by a combination of several different methods, as they have potential to serve as prognostic indicators. The role of cytogenetic techniques in peripheral blood lymphocytes (PBL) as biological indicators of absorbed radiation is reviewed here

Shock absorber in Ignalina NPP

International Nuclear Information System (INIS)

Bulavas, A.; Muralis, J.

1996-09-01

Theoretical calculation and experimental analysis of models of shock absorber in Ignalina NPP is presented. The results obtained from the investigation with model of shock absorber coincide with the theoretical calculation. (author). 2 figs., 3 refs

'We have the internet in our hands': Bangladeshi college students' use of ICTs for health information.

Science.gov (United States)

Waldman, Linda; Ahmed, Tanvir; Scott, Nigel; Akter, Shahinoor; Standing, Hilary; Rasheed, Sabrina

2018-03-20

Information and Communications Technologies (ICTs) which enable people to access, use and promote health information through digital technology, promise important health systems innovations which can challenge gatekeepers' control of information, through processes of disintermediation. College students, in pursuit of sexual and reproductive health (SRH) information, are particularly affected by gatekeeping as strong social and cultural norms restrict their access to information and services. This paper examines mobile phone usage for obtaining health information in Mirzapur, Bangladesh. It contrasts college students' usage with that of the general population, asks whether students are using digital technologies for health information in innovative ways, and examines how gender affects this. This study relies on two surveys: a 2013-2014 General Survey that randomly sampled 854 households drawn from the general population and a 2015 Student Survey that randomly sampled 436 students from two Mirzapur colleges. Select focus group discussions and in-depth interviews were undertaken with students. Icddr,b's Ethical Review Board granted ethical clearance. The data show that Mirzapur's college students are economically relatively well positioned, more likely to own mobile and smart phones, and more aware of the internet than the general population. They are interested in health information and use phones and computers to access information. Moreover, they use digital technology to share previously-discreet information, adding value to that information and bypassing former gatekeepers. But access to health information is not entirely unfettered, affecting male and female students differently, and powerful gatekeepers, both old and new, can still control sources of information. Personal searches for SRH and the resultant online information shared through discrete, personal face-to-face discussions has some potential to challenge social norms. This is particularly so for

Saliency Detection via Absorbing Markov Chain With Learnt Transition Probability.

Science.gov (United States)

Lihe Zhang; Jianwu Ai; Bowen Jiang; Huchuan Lu; Xiukui Li

2018-02-01

In this paper, we propose a bottom-up saliency model based on absorbing Markov chain (AMC). First, a sparsely connected graph is constructed to capture the local context information of each node. All image boundary nodes and other nodes are, respectively, treated as the absorbing nodes and transient nodes in the absorbing Markov chain. Then, the expected number of times from each transient node to all other transient nodes can be used to represent the saliency value of this node. The absorbed time depends on the weights on the path and their spatial coordinates, which are completely encoded in the transition probability matrix. Considering the importance of this matrix, we adopt different hierarchies of deep features extracted from fully convolutional networks and learn a transition probability matrix, which is called learnt transition probability matrix. Although the performance is significantly promoted, salient objects are not uniformly highlighted very well. To solve this problem, an angular embedding technique is investigated to refine the saliency results. Based on pairwise local orderings, which are produced by the saliency maps of AMC and boundary maps, we rearrange the global orderings (saliency value) of all nodes. Extensive experiments demonstrate that the proposed algorithm outperforms the state-of-the-art methods on six publicly available benchmark data sets.

Information technologies in education of medical students at the university of sarajevo.

Science.gov (United States)

Masic, Izet; Karcic, Emina; Hodzic, Ajla; Mulic, Smaila

2014-08-01

Information and communication technology have brought about many changes in medical education and practice, especially in the field of diagnostics. During the academic year 2013/2014, at Faculty of Medicine, University of Sarajevo, students in the final year of the study were subjected to examination which aim was to determine how medical students in Bosnia and Herzegovina subjectively assessing their skills for using computers, have gained insight into the nature of Information Technology's (IT) education and possessive knowledge. The survey was conducted voluntary by anonymous questionnaire consisting of 27 questions, divided into five categories, which are collecting facts about student's: sex, age, year of entry, computer skills, possessing the same, the use of the Internet, the method of obtaining currently knowledge and recommendations of students in order to improve their IT training. According to the given parameters, indicate an obvious difference in the level of knowledge, use and practical application of Information Technology's knowledge among students of the Bologna process to the students educated under the old system in favor of the first ones. Based on a comparison of similar studies conducted in Croatia, Sri Lanka, Pakistan and Denmark, it was observed that the level of knowledge of students of the Medical Faculty in Sarajevo was of equal height or greater than in these countries.

Liquid metal reactor absorber technology

International Nuclear Information System (INIS)

Pitner, A.L.

1990-10-01

The selection of boron carbide as the reference liquid metal reactor absorber material is supported by results presented for irradiation performance, reactivity worth compatibility, and benign failure consequences. Scram response requirements are met easily with current control rod configurations. The trend in absorber design development is toward larger sized pins with fewer pins per bundle, providing economic savings and improved hydraulic characteristics. Very long-life absorber designs appear to be attainable with the application of vented pin and sodium-bonded concepts. 3 refs., 3 figs

On the definition of absorbed dose

International Nuclear Information System (INIS)

Grusell, Erik

2015-01-01

Purpose: The quantity absorbed dose is used extensively in all areas concerning the interaction of ionizing radiation with biological organisms, as well as with matter in general. The most recent and authoritative definition of absorbed dose is given by the International Commission on Radiation Units and Measurements (ICRU) in ICRU Report 85. However, that definition is incomplete. The purpose of the present work is to give a rigorous definition of absorbed dose. Methods: Absorbed dose is defined in terms of the random variable specific energy imparted. A random variable is a mathematical function, and it cannot be defined without specifying its domain of definition which is a probability space. This is not done in report 85 by the ICRU, mentioned above. Results: In the present work a definition of a suitable probability space is given, so that a rigorous definition of absorbed dose is possible. This necessarily includes the specification of the experiment which the probability space describes. In this case this is an irradiation, which is specified by the initial particles released and by the material objects which can interact with the radiation. Some consequences are discussed. Specific energy imparted is defined for a volume, and the definition of absorbed dose as a point function involves the specific energy imparted for a small mass contained in a volume surrounding the point. A possible more precise definition of this volume is suggested and discussed. Conclusions: The importance of absorbed dose motivates a proper definition, and one is given in the present work. No rigorous definition has been presented before. - Highlights: • A stringent definition of absorbed dose is given. • This requires the definition of an irradiation and a suitable probability space. • A stringent definition is important for an understanding of the concept absorbed dose

High School Student Information Access and Engineering Design Performance

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Mentzer, Nathan

2014-01-01

Developing solutions to engineering design problems requires access to information. Research has shown that appropriately accessing and using information in the design process improves solution quality. This quasi-experimental study provides two groups of high school students with a design problem in a three hour design experience. One group has…

Identifying developmental features in students' clinical reasoning to inform teaching.

Science.gov (United States)

Pinnock, Ralph; Anakin, Megan; Lawrence, Julie; Chignell, Helen; Wilkinson, Tim

2018-04-27

There is increasing evidence that students at different levels of training may benefit from different methods of learning clinical reasoning. Two of the common methods of teaching are the "whole - case" format and the "serial cue" approach. There is little empirical evidence to guide teachers as to which method to use and when to introduce them. We observed 23 students from different stages of training to examine how they were taking a history and how they were thinking whilst doing this. Each student interviewed a simulated patient who presented with a straightforward and a complex presentation. We inferred how students were reasoning from how they took a history and how they described their thinking while doing this. Early in their training students can only take a generic history. Only later in training are they able to take a focused history, remember the information they have gathered, use it to seek further specific information, compare and contrast possibilities and analyze their data as they are collecting it. Early in their training students are unable to analyze data during history taking. When they have started developing illness scripts, they are able to benefit from the "serial cue" approach of teaching clinical reasoning.

Informed Strangers: Witnessing and Responding to Unethical Care as Student Nurses

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Joyce Engel

2017-09-01

Full Text Available Nursing students occupy a unique perspective in clinical settings because they are informed, through education, about how patient care ought to happen. Given the brevity of placements and their “visiting status” in clinical sites, students are less invested in the ethos of specific sites. Subsequently, their perspectives of quality care are informed by what should happen, which might differ from that of nurses and patients. The purpose of this study was to identify predominant themes in patient care, as experienced by students, and the influence that these observations have on the development of their ethical reasoning. Using a qualitative descriptive approach in which 27 nursing student papers and three follow-up in-depth interviews were analyzed, three main themes emerged: Good employee, poor nurse; damaged care; and negotiating the gap. The analysis of the ethical situations in these papers suggests that students sometimes observe care that lacks concern for the dignity, autonomy, and safety of patients. For these student nurses, this tension led to uncertainty about patient care and their eventual profession.

Information and Communication Technology Literacy among Student-Teachers in Universities in Nigeria

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Daramola, Florence Olutunu; Yusuf, Mudasiru Olalere; Oyelekan, Oloyede Solomon

2015-01-01

The use of information and communication technology (ICT) in the school system is becoming increasingly prominent. This study was conducted to find out the information and communication technology literacy levels among student-teachers in the universities in North-Central Nigeria. The study involved a total of 638 student-teachers out of which 360…

Information literacy: are final-year medical radiation science students on the pathway to success?

Science.gov (United States)

Thompson, Nadine; Lewis, Sarah; Brennan, Patrick; Robinson, John

2010-01-01

It is necessary for Medical Radiation Science (MRS) students to become information literate in order to interact with and thrive in the professional health care arena. All health care professionals require information literacy (IL) skills to be independent learners and critical thinkers. To achieve this, effective search and evaluation methods must be cultivated in students. Twenty-eight final year MRS students participated in a 30-minute digitally recorded interview regarding their knowledge of information sources, where they locate information, and how they evaluate these sources. Constant comparative analysis via grounded theory was used to thematise the data. A conceptual framework was developed demonstrating the link between the key concepts of convenience, confidence and competence. The impact of the internet on the IL skills of students has been profound, due mainly to convenience. Most students had little confidence in their IL skills, however there were still some students who were confident with their skills and were competent who still preferred to access information sources that were convenient because there was nothing preventing them from doing so. By identifying problem areas, educators can redesign curricula around the strengths and weaknesses of students' IL skills, thus promoting lifelong learning and using electronic based learning to its full potential.

Burnable neutron absorbers

International Nuclear Information System (INIS)

Radford, K.C.; Carlson, W.G.

1985-01-01

This patent deals with the fabrication of pellets for neutron absorber rods. Such a pellet includes a matrix of a refractory material which may be aluminum or zirconium oxide, and a burnable poison distributed throughout the matrix. The neutron absorber material may consist of one or more elements or compounds of the metals boron, gadolinium, samarium, cadmium, europium, hafnium, dysprosium and indium. The method of fabricating pellets of these materials outlined in this patent is designed to produce pores or voids in the pellets that can be used to take up the expansion of the burnable poison and to absorb the helium gas generated. In the practice of this invention a slurry of Al 2 O 3 is produced. A hard binder is added and the slurry and binder are spray dried. This powder is mixed with dry B 4 C powder, forming a homogeneous mixture. This mixture is pressed into green tubes which are then sintered. During sintering the binder volatilizes leaving a ceramic with nearly spherical high-density regions of

Absorbed dose thresholds and absorbed dose rate limitations for studies of electron radiation effects on polyetherimides

Science.gov (United States)

Long, Edward R., Jr.; Long, Sheila Ann T.; Gray, Stephanie L.; Collins, William D.

1989-01-01

The threshold values of total absorbed dose for causing changes in tensile properties of a polyetherimide film and the limitations of the absorbed dose rate for accelerated-exposure evaluation of the effects of electron radiation in geosynchronous orbit were studied. Total absorbed doses from 1 kGy to 100 MGy and absorbed dose rates from 0.01 MGy/hr to 100 MGy/hr were investigated, where 1 Gy equals 100 rads. Total doses less than 2.5 MGy did not significantly change the tensile properties of the film whereas doses higher than 2.5 MGy significantly reduced elongation-to-failure. There was no measurable effect of the dose rate on the tensile properties for accelerated electron exposures.

Absorption process of a falling film on a tubular absorber: An experimental and numerical study

Energy Technology Data Exchange (ETDEWEB)

Islam, Md. Raisul [Department of Mechanical Engineering, Curtin University of Technology, Sarawak Campus Malaysia, CDT 250, 98009 Miri, Sarawak (Malaysia)

2008-08-15

This paper describes an experimental and theoretical analysis of the combined heat and mass transfer processes that take place in the absorber of vapor absorption cooling systems. The effect of the main operating variables such as solution inlet temperature, solution flow rate, coolant inlet temperature, coolant flow rate and absorber vapor pressure on the performance of absorber is experimentally investigated. A mathematical model that takes account of the geometrical details of the solution and coolant flow is developed following the traditional heat exchanger analysis to obtain additional information on the performance of the absorber. The governing equations are solved analytically using Laplace Transformation technique. The variations of the concentration of solution and the temperature of the coolant and solution after each horizontal tube are analyzed. There is satisfactory agreement between the predictions of the analytical model and the experimental results. The serpentine arrangement of the coolant flow in the absorber tubes results in a temperature and concentration variation of the solution mainly along the height of the absorber. (author)

Distributions of 15 elements on 58 absorbers from simulated Hanford Double-Shell Slurry Feed (DSSF)

International Nuclear Information System (INIS)

Marsh, S.F.; Svitra, Z.V.; Bowen, S.M.

1994-11-01

As part of the Hanford Tank Waste Remediation System program at Los Alamos, we evaluated 58 commercially available or experimental absorber materials for their ability to remove hazardous components from high-level waste. These absorbers included cation and anion exchange resins, inorganic exchangers, composite absorbers, pillared layered materials, and a series of liquid extractants sorbed on porous support-beads. We tested these absorbers with a solution that simulates Hanford double-shell slurry feed (DSSF) (pH 14.0). To this simulant solution we added the appropriate radionuclides and used gamma spectrometry to measure fission products (Ce, Cs, Sr, Tc, and Y), actinides (U and Am), and matrix elements (Cr, Co, Fe, Mn, Ni, V, Zn, and Zr). For each of 870 element/absorber combinations, we measured distribution coefficients for dynamic contact periods of 30 min, 2 h, and 6 h to obtain information about sorption kinetics. On the basis of these 2610 measured distribution coefficients, we determined that many of the tested absorbers may be suitable for processing DSSF solutions

Secondary students' use of social and natural world information in a land use decision context

Science.gov (United States)

Kumler, Laura M.

Many societal problems, including land use issues, are complex integrated human-ecological challenges that require an understanding of social and natural world connections. This dissertation investigates how secondary students perceive the social and natural world dimensions of land use, how they might act to support sustainable land use, and how Kaplan and Kaplan's (2008) Reasonable Person Model can inform teaching approaches to prepare students for such complex decisions and action-taking. The dissertation argues that subject compartmentalization in high schools adversely impacts students' abilities to use and to integrate information from various subjects to make a land use decision. Nine secondary science and social studies teachers and their students (n=500) participated in a quasi-experiment using pre- and posttests with treatment and comparison groups to gauge students' requests for social versus natural world information to make land use decisions. Students' self-reported actions and knowledge of actions to support sustainable land use were also measured. Additional data included classroom observations, teacher logs and interviews, and 52 student interviews. Results indicated that students requested social world over natural world information and preferred to consult with social scientists and stakeholders over natural scientists. Results also suggested that experiencing an integrated curriculum increased students' requests for natural world information relevant to the land use decision. Interestingly, this effect occurred even among social studies students whose teachers reported putting scant emphasis on the natural world curriculum content. Moreover, the type of course in which students experienced the curriculum predicted student information use. Finally, students were found to have a limited repertoire of land use actions and knowledge of actions and generally reported undertaking and thinking of individual actions such as recycling or trash pick

Baccalaureate Nursing Students' Abilities in Critically Identifying and Evaluating the Quality of Online Health Information.

Science.gov (United States)

Theron, Maggie; Redmond, Anne; Borycki, Elizabeth M

2017-01-01

Both the Internet and social media have become important tools that patients and health professionals, including health professional students, use to obtain information and support their decision-making surrounding health care. Students in the health sciences require increased competence to select, appraise, and use online sources to adequately educate and support patients and advocate for patient needs and best practices. The purpose of this study was to ascertain if second year nursing students have the ability to critically identify and evaluate the quality of online health information through comparisons between student and expert assessments of selected online health information postings using an adapted Trust in Online Health Information scale. Interviews with experts provided understanding of how experts applied the selected criteria and what experts recommend for implementing nursing informatics literacy in curriculums. The difference between student and expert assessments of the quality of the online information is on average close to 40%. Themes from the interviews highlighted several possible factors that may influence informatics competency levels in students, specifically regarding the critical appraisal of the quality of online health information.

INFORMATION TECHNOLOGIES IN EDUCATION OF MEDICAL STUDENTS

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О В Полякова

2015-12-01

Full Text Available In article research about introduction of information materials in the form of the computer program is given to pedagogical process of students pediatricians. The concept of the program consists in systematization of medicines in a multilevel format for the purpose of a multilateral choice of medicines in the conditions of modern pharmacotherapy.

Analysis of a Student-Centered, Self-Paced Pedagogy Style for Teaching Information Systems Courses

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Sharon Paranto

2006-12-01

Full Text Available The entry-level skills for students enrolling in a college-level information systems course can vary widely. This paper analyzes the impact of a "student-centered" pedagogy model, in which students use a self-paced approach for learning the material in an introductory information systems course, with pre-assigned dates for lectures and for assignment/exam deadlines. This new paradigm was implemented in several sections of an introductory information systems course over a two-semester time span. Under the new model, tutorial-style textbooks were used to help students master the material, all other materials were available online, and all exams were given using a hands-on, task-oriented online testing package, which included a multiple-choice/true-false component to test student understanding of the conceptual portion of the course. An anonymous student survey was used to gain student perceptions of the level of learning that took place under the new paradigm, as well as to measure student satisfaction with the course design, and a pre-/post-test was used to provide a measure of student learning.

Evaluation of information ethical issues among undergraduate students: An exploratory study

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Liezel Cilliers

2017-01-01

Full Text Available Background: Higher education is increasingly making use of information and communication technology (ICT to deliver educational services. Young adults at higher educational institutions are also making use of ICTs in their daily lives but are not taught how to do so ethically. Software piracy, plagiarism and cheating, while making use of ICTs, are the most common ethical dilemmas that will face digital natives. Objective: The purpose of this article was to investigate information ethics of young adults at a higher education institution in the Eastern Cape Province of South Africa. Method: This study made use of a positive, quantitative survey approach. A closed-ended questionnaire was distributed to a group of 312 first-year students, who had registered for a computer literacy class. A response rate of 69.2% was recorded, resulting in 216 students participating in the study. The results were analysed using descriptive and inferential (t-tests statistics in SPSS V22. Results: The results indicated that plagiarism is a problem among first-year students, and elements of authorship should be included in the curriculum. Students understood what software piracy was but did not think it was wrong to copy software from the Internet. Finally, the students understood that cheating, while making use of technology, is wrong and should be avoided. Conclusion: The recommendation of the study then is that information ethics must be included in the undergraduate curriculum in order to prepare students to deal with these ethical problems.

Dynamic testing of airplane shock-absorbing struts

Science.gov (United States)

Langer, P; Thome, W

1932-01-01

Measurement of perpendicular impacts of a landing gear with different shock-absorbing struts against the drum testing stand. Tests were made with pneumatic shock absorbers having various degrees of damping, liquid shock absorbers, steel-spring shock absorbers and rigid struts. Falling tests and rolling tests. Maximum impact and gradual reduction of the impacts in number and time in the falling tests. Maximum impact and number of weaker impacts in rolling tests.

Liquid absorber experiments in ZED-2

International Nuclear Information System (INIS)

McDonnell, F.N.

1975-07-01

A set of liquid absorber experiments was performed in ZED-2 to provide data with which to test the adequacy of calculational methods for zone controller and refuelling studies associated with advanced reactor concepts. The absorber consisted of a full length aluminum tube, containing either i)H 2 O, ii)H 2 O + boron (2.5 mg/ml) or iii)H 2 O + boron (8.0 mg/ml). The tube was suspended vertically at interstitial or in-channel locations. A U-tube absorber was also simulated using two absorber tubes with appropriate spacers. Experiments were carried out at two different square lattice pitches, 22.86 and 27.94 cm. Measurements were made of the reactivity effects of the absorbers and, in some cases, of the detailed flux distribution near the perturbation. The results from one calculational method, the source-sink approach, were compared with the data from selected experiments. (author)

A chiral microwave absorbing absorbent of Fe–CoNiP coated on spirulina

Energy Technology Data Exchange (ETDEWEB)

Xu, Yonggang, E-mail: xuyonggang221@163.com [Science and Technology on Electromagnetic Scattering Laboratory, Shanghai, 200438 (China); Yuan, Liming [Science and Technology on Electromagnetic Scattering Laboratory, Shanghai, 200438 (China); Zhang, Deyuan [School of Mechanical Engineering and Automation, Beihang University, Beijing, 100191 (China)

2015-11-15

A chiral bio-absorbent of Fe–CoNiP coated on the spirulina was fabricated by the electroless and chemical vapor decomposition. The scanning electron microscopy (SEM) was used to evaluate the spirulina cells particle morphology. X-ray diffraction (XRD) patterns were done to analyze the particle crystal grain structure. The permittivity and permeability was measured by a vector network analyzer in frequency 8–18 GHz, and the reflection loss (RL) was calculated. The results showed the carbonyl iron particles (CIPs) and CoNiP were bonded to the spirulina surface, the permittivity and permeability could be enlarged as Fe films coated on the particles compared with the CoNiP spirulina, it was attributed to the excellent electromagnetic property of CIPs. The chiral Fe–CoNiP composites had a better absorbing property at 8–18 GHz than the CoNiP spirulina composite, the RL was −16.26 dB at 10.48 GHz, the absorbing band was 9.5–11.5 GHz of RL less than −10 dB, which indicated the Fe–CoNiP spirulina could be an effective absorbent used in 8–18 GHz. - Highlights: • Absorbers filled with Fe–CoNiP coating on the spirulina were fabricated. • The permittivity and permeability increased as CIPs coated. • The Fe material enhanced the electromagnetic property. • The spirulina coated Fe–CoNiP was effective in 8–18 GHz.

An Investigation of Factors Affecting Utilization of Information Technology (IT by Agricultural Students

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Masoud Rezaei

2012-03-01

Full Text Available The present study was carried out with the aim of investigating factors affecting utilization of information technology by students of agriculture. A survey approach was used in this study and a questionnaire was developed to gather the data. The study population was postgraduate students (MS and PhD of economic and agricultural development faculty in Tehran University who were selected by applying random sampling technique. Sample size for students was 61 persons. Data was analyzed by using SPSS/WIN software. The results of the research indicated that there was a positive significant relationship between using of information technology by students and their age, average, prior experience, information technology skills, innovativeness, perceived ease of use, attitude and self-efficacy. The relationship between computer anxiety and using of IT was negative. Stepwise Regression Analysis showed that innovativeness and attitude predict 53.2 percent of variations of IT use by students.

Absorber rod drive for nuclear reactors

International Nuclear Information System (INIS)

Acher, H.

1985-01-01

The invention concerns a further addition to the invention of DE 33 42 830 A1. The free contact of the hollow piston with the nut due to hydraulic pressure is replaced by a hydraulic or spring attachment. The pressure system required to produce the hydraulic pressure is therefore omitted, and the electrical power required for driving the pump or the mass flow is also omitted. The absorber rod slotted along its longitudinal axis is replaced by an absorber rod, in the longitudinal axis of which a hollow piston is connected together with the absorber rod. This makes the absorber rod more stable, and assembly is simplified. (orig./HP) [de

Investigating the Information Needs of University Students in Foundational Foreign Language Courses

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Glenna Westwood

2012-06-01

Full Text Available This investigation seeks to address two issues: first, to discover if there is evidence that university students in foundational language courses need information resources to support their language learning and second, if such evidence exists, what the specific information resource needs might be and how important those resources are to students’ language learning. After engaging in a year of foreign language study, the author used the evidence gathered to develop and conduct a survey of the user needs of language students at the Self Access Centre (CAADI of the University of Guanajuato, Mexico. Results of the survey supported the personal learning experiences of the author. Over 80% of students surveyed reported using the information resources in the CAADI at least once a week with general grammar books, course text books and films being reported as the most important resources. This investigation provides a starting point for research in to the collection development practices of academic libraries supporting the learning of foreign languages. By examining the information needs of one population, evidence has been provided that these students do indeed need information resources to support their language learning. The study suggests specific resource types that could be important for these users.

Informal science participation positively affects the communication and pedagogical skills of university physics students

Science.gov (United States)

Hinko, Kathleen; Finkelstein, Noah

2013-04-01

Many undergraduate and graduate physics students choose to participate in an informal science program at the University of Colorado Boulder (Partnerships for Informal Science Education in the Community (PISEC)). They coach elementary and middle school students in inquiry-based physics activities during weekly, afterschool sessions. Observations from the afterschool sessions, field notes from the students, and pre/post surveys are collected. University students are also pre/post- videotaped explaining a textbook passage on a physics concept to an imagined audience for the Communications in Everyday Language assessment (CELA). We present findings from these data that indicate informal experiences improve the communication and pedagogical skills of the university student as well as positively influence their self-efficacy as scientific communicators and teachers.

Understanding the information and resource needs of UK health and social care placement students.

Science.gov (United States)

Callaghan, Lynne; Doherty, Alan; Lea, Susan J; Webster, Daniel

2008-12-01

Students on health and social care degree programmes spend 50% of their time on practice placements. Because of the diversity of settings and the need to evidence their work, it is vital to understand the information and resource needs of placement students. The aim of this investigation was to understand the needs of placement students in terms of accessing resources whilst they are in the field in order to inform a guide to meet these needs. Focus groups were conducted with students on midwifery, social work and post-registration health professions degree programmes on three different sites across the region. Data were analysed using Thematic Content Analysis. Three themes emerged from the data: inequality, user education needs and students' solutions and strategies. It is essential to speak to placement students in order to understand their needs in terms of accessing and using library resources. The timing and content of information skills training is key to meeting student needs while on placement.

Evaluation of information literacy status among medical students at Shiraz University of Medical Sciences.

Science.gov (United States)

Bazrafkan, Leila; Hayat, Ali Asghar; Abbasi, Karim; Bazrafkan, Aghdas; Rohalamini, Azadeh; Fardid, Mozhgan

2017-01-01

The information literacy status and the use of information technology among students in the globalization age of course plans are very momentous. This study aimed to evaluate the information literacy status and use of information technology among medical students of Shiraz University of Medical Sciences in 2013. This was a descriptive-analytical study with cross-sectional method. The study population consisted of all medical students (physiopathology, externship and internship) studying at Shiraz University of Medical Sciences. The sample size (n=310) was selected by systematic random sampling. The tool of data gathering was LASSI questionnaire (assigned by America research association) with 48 closed items in five-point LIKERT scale. The questionnaire included two distinct parts of demographic questions and the information literacy skills based on the standards of information literacy capacities for academic education. The content validity was acquired by professors' and experts' comments. The reliability was also calculated by Cronbach'salpha (0.85). Data were analyzed in both descriptive (frequency- mean) and analytical level (t-test, analysis of variance) using SPSS 14 software. 60.3% of the participants were females, and the remaining (29.7%) were males. The mean score of information literacy and its five subgroups among the students weren't at a desirable level. The mean scores of information literacy for educational grades from the highest to lowest belonged to the internship, physiopathology and externship. The results showed that the highest average was related to the effective access ability to information among interns (9.27±3.57) and the lowest one was related to the ability of understanding legal and economical cases related with using information among externs (3.11±1.32).The results of ANOVA showed that there wasn't a significant difference between educational grades and information literacy. Finally, the result of independent t-test did not show a

A Program for Introducing Information Literacy to Commercial Art and Design Students

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David A. Walczak

2010-03-01

Full Text Available This paper describes the process of developing and implementing a comprehensive, school-wide, and sustainable information literacy program at a commercial art and design school. The program requires that information literacy student learning outcomes be included in specific General Education and art and design courses across the curriculum. The results of this multi-year effort indicate that while the program is sound, teaching information literacy is an on-going effort requiring much more training of faculty and students. Best practices in information literacy in library science and art and design literature are reviewed

Multiband Negative Permittivity Metamaterials and Absorbers

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Yiran Tian

2013-01-01

Full Text Available Design and characteristics of multiband negative permittivity metamaterial and its absorber configuration are presented in this paper. The proposed multiband metamaterial is composed of a novel multibranch resonator which can possess four electric resonance frequencies. It is shown that, by controlling the length of the main branches of such resonator, the resonant frequencies and corresponding absorbing bands of metamaterial absorber can be shifted in a large frequency band.

Absorber materials in CANDU PHWR's

International Nuclear Information System (INIS)

Price, E.G.; Boss, C.R.; Novak, W.Z.; Fong, R.W.L.

1995-03-01

In a CANDU reactor the fuel channels are arranged on a square lattice in a calandria filled with heavy water moderator. This arrangement allows five types of tubular neutron absorber devices to be located in a relatively benign environment of low pressure, low temperature heavy water between neighbouring rows of columns of fuel channels. This paper will describe the roles of the devices and outline the design requirements of the absorber component from a reactor physics viewpoint. Nuclear heating and activation problems associated with the different absorbers will be briefly discussed. The design and manufacture of the devices will be also discussed. The control rod absorbers and shut off materials are cadmium and stainless steel. In the tubular arrangement, the cadmium is sandwiched between stainless steel tubes. This type of device has functioned well, but there is now concern over the availability and expense of cadmium which is used in two types of CANDU control devices. There are also concerns about the toxicity of cadmium during the fabrication of the absorbers. These concerns are prompting AECL to study alternatives. To minimize design changes, pure boron-10 alloyed in stainless steel is a favoured option. Work is underway to confirm the suitability of the boron-loaded steel and identify other encapsulated absorber materials for practical application. Because the reactivity devices or their guide tubes span the calandria vessel, the long slender components must be sufficiently rigid to resist operational vibration and also be seismically stable. Some of these components are made of Zircaloy to minimize neutron absorption. Slow irradiation growth and creep can reduce the spring tension, and periodic adjustments to the springs are required. Experience with the control absorber devices has generally been good. In one instance liquid zone controllers had a problem of vibration induced fretting but a designed back-fit resolved the problem. (author). 3 refs., 1

TPX/TFTR Neutral Beam energy absorbers

International Nuclear Information System (INIS)

Dahlgren, F.; Wright, K.; Kamperschroer, J.; Grisham, L.; Lontai, L.; Peters, C.; VonHalle, A.

1993-01-01

The present beam energy absorbing surfaces on the TFTR Neutral Beams such as Ion Dumps, Calorimeters, beam defining apertures, and scrapers, are simple water cooled copper plates which wee designed to absorb (via their thermal inertia) the incident beam power for two seconds with a five minute coal down interval between pulses. These components are not capable of absorbing the anticipated beam power loading for 1000 second TPX pulses and will have to be replaced with an actively cooled design. While several actively cooled energy absorbing designs were considered,, the hypervapotron elements currently being used on the JET beamlines were chosen due to their lower cooling water demands and reliable performance on JET

Facebook for Health Promotion: Female College Students' Perspectives on Sharing HPV Vaccine Information Through Facebook.

Science.gov (United States)

Zhang, Ni; Tsark, JoAnn; Campo, Shelly; Teti, Michelle

2015-04-01

Facebook, a social network site, has been widely used among young adults. However, its potential to be used as a health promotion medium has not been fully examined. This study explored Facebook's potential for sharing human papillomavirus (HPV) vaccine information among female college students in Hawai'i. Culturally tailored flyers and handouts were developed and distributed at one large university in Hawai'i to recruit female college students between the age of 18 and 26 having an active Facebook account. Three focus group meetings were conducted to gather student perspectives about how information about HPV vaccine may be best shared via Facebook. We found that students believed Facebook is a good awareness tool but they needed more knowledge about the HPV vaccine to feel comfortable sharing the information. Participants preferred forwarding information to chatting about HPV. Some participants expressed concern that their Facebook friends would think the HPV vaccine information they forwarded on Facebook is spam. Participants suggested prefacing the posted HPV vaccine information with a personal note in their own words to make the message more interesting and relevant to their Facebook friends. Future interventions using Facebook to promote HPV vaccine could provide students with HPV vaccine information from credible sources and ask students to attach personal testimonials or endorsements while forwarding the information on Facebook.

Enhanced Measurements of Chromophoric Dissolved Organic Matter (CDOM) for Water Quality Analysis using a New Simultaneous Absorbance and Fluorescence Instrument

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Gilmore, A. M.

2009-12-01

Water quality, with respect to suspended particles and dissolved organic and inorganic compounds, is now recognized as one of the top global environmental concerns. Contemporary research indicates fluorescence spectral analyses coupled with UV-VIS absorbance assays have the potential, especially when combined and coordinated, to facilitate rapid, robust quantification of a wide range of compounds, including interactions among them. Fluorescence excitation-emission matrices (EEMs) collected over the UV-VIS region provide a wealth of information on chromophoric dissolved organic matter (CDOM). CDOM includes humic and fulvic acid, chlorophyll, petroleum, protein, amino acid, quinone, fertilizer, pesticide, sewage and numerous other compound classes. Analysis of the EEMs using conventional and multivariate techniques, including primarily parallel factor analysis (PARAFAC), provides information about many types of CDOM relevant to carbon cycling and pollution of fresh, marine and drinking water sources. Of critical concern also are the CDOM interactions with, and optical activities of, dissolved inorganic compounds. Many of the inorganic compounds and oxygen demand parameters can be analyzed with a wide range of UV-VIS absorbance assays. The instrument is designed and optimized for high UV throughput and low stray light performance. The sampling optics are optimized for both fluorescence and absorbance detection with the same sample. Both EEM and absorbance measurements implement NIST traceable instrument correction and calibration routines. The fluorescence detection utilizes a high dynamic range CCD coupled to a high-resolution spectrograph while absorbance utilizes diode based detection with a high dynamic range and extremely low-stray light specifications. The CDOM analysis is facilitated by a transfer of the data and model information with the PARAFAC routine. The EEM analysis software package facilitates coordinated correction of and correlation with the

Information Retrieval Strategies of Millennial Undergraduate Students in Web and Library Database Searches

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Porter, Brandi

2009-01-01

Millennial students make up a large portion of undergraduate students attending colleges and universities, and they have a variety of online resources available to them to complete academically related information searches, primarily Web based and library-based online information retrieval systems. The content, ease of use, and required search…

Gender differences in students' utilization of electronic information ...

African Journals Online (AJOL)

The study determined gender differences among students in the utilization of electronic information resources in Ramat Library, University of Maiduguri. One objective,with corresponding hypotheses guided the study. The survey research method was used. The population for the study comprised 13,995 (thirteen thousand, ...

Development of Student Information Management System based on Cloud Computing Platform

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Ibrahim A. ALAMERI

2017-10-01

Full Text Available The management and provision of information about the educational process is an essential part of effective management of the educational process in the institutes of higher education. In this paper the requirements of a reliable student management system are analyzed, formed a use-case model of student information management system, designed and implemented the architecture of the application. Regarding the implementation process, modern approaches were used to develop and deploy a reliable online application in cloud computing environments specifically.

Predicting Digital Informal Learning: An Empirical Study among Chinese University Students

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He, Tao; Zhu, Chang; Questier, Frederik

2018-01-01

Although the adoption of digital technology has gained considerable attention in higher education, currently research mainly focuses on implementation in formal learning contexts. Investigating what factors influence students' digital informal learning is still unclear and limited. To understand better university students' digital informal…

Information Anxiety and African-American Students in a Graduate Education Program

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Katopol, Patricia Fields

2012-01-01

Library anxiety has been cited as one factor affecting academic performance, but library use is only part of obtaining information for academic needs. This paper expands the concept of library anxiety to "information anxiety" by an examination of the information behavior of black graduate students when using a variety of information resources,…

Estimation of Absorbed Dose in Occlusal Radiography

International Nuclear Information System (INIS)

Yoo, Young Ah; Choi, Karp Shick; Lee, Sang Han

1990-01-01

The purpose of this study was to estimate absorbed dose of each important anatomic site of phantom (RT-210 Head and Neck Section R, Humanoid Systems Co., U.S.A.) head in occlusal radiography. X-radiation dosimetry at 12 anatomic sites in maxillary anterior topography, maxillary posterior topography, mandibular anterior cross-section, mandibular posterior cross-section, mandibular anterior topographic, mandibular posterior topographic occlusal projection was performed with calcium sulfate thermoluminescent dosimeters under 70 Kvp and 15 mA, 1/4 second (8 inch cone ) and 1 second (16 inch cone) exposure time. The results obtained were as follows: Skin surface produced highest absorbed dose ranged between 3264 mrad and 4073 mrad but there was little difference between projections. In maxillary anterior topographic occlusal radiography, eyeballs, maxillary sinuses, and pituitary gland sites produced higher absorbed doses than those of other sites. In maxillary posterior topographic occlusal radiography, exposed eyeball site and exposed maxillary sinus site produced high absorbed doses. In mandibular anterior cross-sectional occlusal radiography, all sites were produced relatively low absorbed dose except eyeball sites. In Mandibular posterior cross-sectional occlusal radiography, exposed eyeball site and exposed maxillary sinus site were produced relatively higher absorbed doses than other sites. In mandibular anterior topographic occlusal radiography, maxillary sinuses, submandibular glands, and thyroid gland sites produced high absorbed doses than other sites. In mandibular posterior topographic occlusal radiography, submandibular gland site of the exposed side produced high absorbed dose than other sites and eyeball site of the opposite side produced relatively high absorbed dose.

Patent Information Use in Engineering Technology Design: An Analysis of Student Work

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Phillips, Margaret; Zwicky, Dave

2017-01-01

How might engineering technology students make use of patent information in the engineering design process? Librarians analyzed team project reports and personal reflections created by students in an undergraduate mechanical engineering technology design course, revealing that the students used patents to consider the patentability of their ideas,…

Teaching Chemistry Students How To Use Patent Databases and Glean Patent Information

Science.gov (United States)

MacMillan, Margy; Shaw, Lawton

2008-07-01

Patent literature is an important source of chemical information that is often neglected by chemical educators. This paper describes an effort to teach chemistry students how to use patent databases to search for information on applied chemical technology related to the manufacture of industrial and specialty chemicals. Students in a second-year-level organic chemistry class were shown how to search patent literature as part of a group research paper assignment that involved determining the feasibility of starting an industrial chemical operation to manufacture a given industrial chemical. Students who were assigned high value or specialty chemicals were most likely to cite patent literature in their final papers. Students who were assigned plastics or bulk commodity chemicals were less likely to cite patents. It is suggested that students made choices about the usefulness of patent literature and that patents were most useful when current patents existed and provided the patent owner a competitive advantage. For plastics or commodity chemicals, manufacturing technologies tend to be mature and are well described by more accessible information sources. Suggestions are made for effective introduction of patent literature instruction into upper-level chemistry courses.

Motivation, Critical Thinking and Academic Verification of High School Students' Information-seeking Behavior

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Z Hidayat

2017-06-01

Full Text Available High school students have known as Gen Y or Z and their media using can be understand on their information-seeking behavior. This research’s purposes were: 1 to analyze the students’ motivation; 2 to analyze the critical thinking and academic verification; 3 to analyze the information-seeking behavior. This study used quantitative approach through survey among 1125 respondents in nine clusters, i.e. Central, East, North, West, and South of Jakarta, Tangerang, Bekasi, Depok, and Bogor. Schools sampling based on "the best schools rank" by the government, while respondents have taken by accidental in each school. Construct of questionnaire included measurement of motivation, critical thinking and academic verification, and the information-seeking behavior at all. The results showed that the motivations of the use of Internet were dominated by habit to interact and be entertained while on the academic needs are still relatively small but increasing significantly. Students’ self-efficacy, performance and achievement goals tend to be high motives, however the science learning value, and learning environment stimulation were average low motives. High school students indicated that they think critically about the various things that become content primarily in social media but less critical of the academic information subjects. Unfortunately, high school students did not conducted academic verification on the data and information but students tend to do plagiarism. Key words: Student motivation, critical thinking, academic verification, information-seeking behavior, digital generation.

Photoelectron antibunching and absorber theory

International Nuclear Information System (INIS)

Pegg, D.T.

1980-01-01

The recently detected photoelectron antibunching effect is considered to be evidence for the quantised electromagnetic field, i.e. for the existence of photons. Direct-action quantum absorber theory, on the other hand, has been developed on the basis that the quantised field is illusory, with quantisation being required only for atoms. In this paper it is shown that photoelectron antibunching is readily explicable in terms of absorber theory and in fact is directly attributable to the quantum nature of the emitting and detecting atoms alone. The physical nature of the reduction of the wavepacket associated with the detection process is briefly discussed in terms of absorber theory. (author)

Theoretical Model of Development of Information Competence among Students Enrolled in Elective Courses

Science.gov (United States)

Zhumasheva, Anara; Zhumabaeva, Zaida; Sakenov, Janat; Vedilina, Yelena; Zhaxylykova, Nuriya; Sekenova, Balkumis

2016-01-01

The current study focuses on the research topic of creating a theoretical model of development of information competence among students enrolled in elective courses. In order to examine specific features of the theoretical model of development of information competence among students enrolled in elective courses, we performed an analysis of…

Student Development of Information Literacy Skills during Problem-Based Organic Chemistry Laboratory Experiments

Science.gov (United States)

Shultz, Ginger V.; Li, Ye

2016-01-01

Problem-based learning methods support student learning of content as well as scientific skills. In the course of problem-based learning, students seek outside information related to the problem, and therefore, information literacy skills are practiced when problem-based learning is used. This work describes a mixed-methods approach to investigate…

Student Learning and Performance in Information Systems Courses: The Role of Academic Motivation

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Herath, Tejaswini C.

2015-01-01

Despite the need for information technology knowledge in the business world today, enrollments in information systems (IS) courses have been consistently declining. Student performance in lower level IS courses and student assumptions about the level of difficulty of the courses seem to be reasons for lower enrollments. To understand how student…

Factor analysis of sources of information on organ donation and transplantation in journalism students.

Science.gov (United States)

Martínez-Alarcón, L; Ríos, A; Ramis, G; López-Navas, A; Febrero, B; Ramírez, P; Parrilla, P

2013-01-01

Journalists and the information they disseminate are essential to promote health and organ donation and transplantation (ODT). The attitude of journalism students toward ODT could influence public opinion and help promote this treatment option. The aim of this study was to determine the media through which journalism students receive information on ODT and to analyze the association between the sources of information and psychosocial variables. We surveyed journalism students (n = 129) recruited in compulsory classes. A validated psychosocial questionnaire (self-administered, anonymous) about ODT was used. Student t test and χ(2) test were applied. Questionnaire completion rate was 98% (n = 126). The medium with the greatest incidence on students was television (TV), followed by press and magazines/books. In the factor analysis to determine the impact of the information by its source, the first factor was talks with friends and family; the second was shared by hoardings/publicity posters, health professionals, and college/school; and the third was TV and radio. In the factor analysis between information sources and psychosocial variables, the associations were between information about organ donation transmitted by friends and family and having spoken about ODT with them; by TV, radio, and hoardings and not having spoken in the family; and by TV/radio and the father's and mother's opinion about ODT. The medium with the greatest incidence on students is TV, and the medium with the greatest impact on broadcasting information was conversations with friends, family, and health professionals. This could be useful for society, because they should be provided with clear and concise information. Copyright © 2013 Elsevier Inc. All rights reserved.

Entrepreneurial Health Informatics for Computer Science and Information Systems Students

Science.gov (United States)

Lawler, James; Joseph, Anthony; Narula, Stuti

2014-01-01

Corporate entrepreneurship is a critical area of curricula for computer science and information systems students. Few institutions of computer science and information systems have entrepreneurship in the curricula however. This paper presents entrepreneurial health informatics as a course in a concentration of Technology Entrepreneurship at a…

Ice Cream Seminars for Graduate Students: Imparting Chemical Information Literacy

Science.gov (United States)

Garritano, Jeremy R.

2007-01-01

This article provides information on a chemical information literacy program designed primarily for new graduate students. The full implementation of this program is discussed, including defining its purpose, topics covered, content presented, methods of marketing, and evaluation. The result is a series of voluntary seminars given biweekly…

An omnidirectional electromagnetic absorber made of metamaterials

International Nuclear Information System (INIS)

Cheng Qiang; Cui Tiejun; Jiang Weixiang; Cai Bengeng

2010-01-01

In a recent theoretical work by Narimanov and Kildishev (2009 Appl. Phys. Lett. 95 041106) an optical omnidirectional light absorber based on metamaterials was proposed, in which theoretical analysis and numerical simulations showed that all optical waves hitting the absorber are trapped and absorbed. Here we report the first experimental demonstration of an omnidirectional electromagnetic absorber in the microwave frequency. The proposed device is composed of non-resonant and resonant metamaterial structures, which can trap and absorb electromagnetic waves coming from all directions spirally inwards without any reflections due to the local control of electromagnetic fields. It is shown that the absorption rate can reach 99 per cent in the microwave frequency. The all-directional full absorption property makes the device behave like an 'electromagnetic black body', and the wave trapping and absorbing properties simulate, to some extent, an 'electromagnetic black hole.' We expect that such a device could be used as a thermal emitting source and to harvest electromagnetic waves.

A Comparison of Nursing and Teacher Education Students' Information Literacy Learning: Results from Norway, 2016

Science.gov (United States)

Nierenberg, Ellen

2017-01-01

This study measures first-year undergraduate students' self-assessments and learning outcomes in information literacy skills in their first months of higher education in Norway. Comparisons are made between nursing students and teacher education students. Surveys were conducted before the library's information literacy course and after both…

Additive manufacturing of RF absorbers

Science.gov (United States)

Mills, Matthew S.

The ability of additive manufacturing techniques to fabricate integrated electromagnetic absorbers tuned for specific radio frequency bands within structural composites allows for unique combinations of mechanical and electromagnetic properties. These composites and films can be used for RF shielding of sensitive electromagnetic components through in-plane and out-of-plane RF absorption. Structural composites are a common building block of many commercial platforms. These platforms may be placed in situations in which there is a need for embedded RF absorbing properties along with structural properties. Instead of adding radar absorbing treatments to the external surface of existing structures, which adds increased size, weight and cost; it could prove to be advantageous to integrate the microwave absorbing properties directly into the composite during the fabrication process. In this thesis, a method based on additive manufacturing techniques of composites structures with prescribed electromagnetic loss, within the frequency range 1 to 26GHz, is presented. This method utilizes screen printing and nScrypt micro dispensing to pattern a carbon based ink onto low loss substrates. The materials chosen for this study will be presented, and the fabrication technique that these materials went through to create RF absorbing structures will be described. The calibration methods used, the modeling of the RF structures, and the applications in which this technology can be utilized will also be presented.

Absorbed dose assessment in newborns during x-ray examinations

Science.gov (United States)

Taipe, Patricia K.; Berrocal, Mariella J.; Carita, Raúl F.

2012-02-01

Often a newborn presents breathing problems during the early days of life, i.e. bronchopneumonia, wich are caused in most of cases, by aspirating a mixture of meconium and amniotic fluid. In these cases, it is necessary to make use of a radiograph, requested by the physician to reach a diagnosis. This paper seeks to evaluate the absorbed doses in neonates undergoing a radiograph. For this reason we try to simulate the real conditions in a X-ray room from Lima hospitals. With this finality we perform a simulation made according a questionnaire related to technical data of X-ray equipment, distance between the source and the neonate, and its position to be irradiated. The information obtained has been used to determine the absorbed dose by infants, using the MCNP code. Finally, the results are compared with reference values of international health agencies.

Evaluation and analysis of uncertainty in the information seeking behavior of medical post-graduate students

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Azami Mohammad

2018-02-01

Full Text Available This study aimed to explore and analyze uncertainty in the information seeking behavior among the students of Kerman University of Medical Sciences (KUMS based on Kuhlthau Information Search Process Model. This is an applied research. Data gathered using questionnaire. Research population included 1075 students from all graduate students of KUMS in M.Sc. and Ph.D. grades. The sample size estimated 263 people .The studied students had relatively similar senses as reported by Kuhlthau in her information search process model. Among demographic variables, only gender affected the presentation stage. Women had better performance in the presentation stage. Ph.D. students performed better than master students when selecting their research topics. These two groups had no clear differences in other stages. Students with previous experience in research activities had better performance in title selection, literature exploration and presentation stages and also had lower uncertainty. The students’ performance decreased in different stages as their ages increased. The effect of individuals’ age on their performance was considerable in the stages of literature exploration and result presentation. The graduate students of KUMS follow the same stages as Kuhlthau information search process model and have similar feelings with that. Uncertainty was felt in the different stages of information search by graduate students of KUMS. The factors like age, gender, level of education and previous experience were effective in some stages on decrease or increase of uncertainty.

Warm Absorber Diagnostics of AGN Dynamics

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Kallman, Timothy

Warm absorbers and related phenomena are observable manifestations of outflows or winds from active galactic nuclei (AGN) that have great potential value. Understanding AGN outflows is important for explaining the mass budgets of the central accreting black hole, and also for understanding feedback and the apparent co-evolution of black holes and their host galaxies. In the X-ray band warm absorbers are observed as photoelectric absorption and resonance line scattering features in the 0.5-10 keV energy band; the UV band also shows resonance line absorption. Warm absorbers are common in low luminosity AGN and they have been extensively studied observationally. They may play an important role in AGN feedback, regulating the net accretion onto the black hole and providing mechanical energy to the surroundings. However, fundamental properties of the warm absorbers are not known: What is the mechanism which drives the outflow?; what is the gas density in the flow and the geometrical distribution of the outflow?; what is the explanation for the apparent relation between warm absorbers and the surprising quasi-relativistic 'ultrafast outflows' (UFOs)? We propose a focused set of model calculations that are aimed at synthesizing observable properties of warm absorber flows and associated quantities. These will be used to explore various scenarios for warm absorber dynamics in order to answer the questions in the previous paragraph. The guiding principle will be to examine as wide a range as possible of warm absorber driving mechanisms, geometry and other properties, but with as careful consideration as possible to physical consistency. We will build on our previous work, which was a systematic campaign for testing important class of scenarios for driving the outflows. We have developed a set of tools that are unique and well suited for dynamical calculations including radiation in this context. We also have state-of-the-art tools for generating synthetic spectra, which are

Preparation of super absorbent by irradiation polymerization

International Nuclear Information System (INIS)

Hua Fengjun; Tan Chunhong; Qian Mengping

1995-01-01

A kind of absorbent is prepared by gamma-rays irradiated by reversed-phase suspension polymerization. Drying particles have 1400 (g/g) absorbency in de-ionic water. Effects of reactive conditions, e.g.: dose-rate, dose, monomer concentration, degree of monomer neutralization and crosslinking agents on absorbency in de-ionic water are discussed. The cause of absorbing de-ionic water by polymer is related to its network structure and ionic equilibrium in particle. Accordingly, a suit reactive condition is chosen for preparation of hydro gel spheres

Frequency Tuning of Vibration Absorber Using Topology Optimization

Science.gov (United States)

Harel, Swapnil Subhash

A tuned mass absorber is a system for reducing the amplitude in one oscillator by coupling it to a second oscillator. If tuned correctly, the maximum amplitude of the first oscillator in response to a periodic driver will be lowered, and much of the vibration will be 'transferred' to the second oscillator. The tuned vibration absorber (TVA) has been utilized for vibration control purposes in many sectors of Civil/Automotive/Aerospace Engineering for many decades since its inception. Time and again we come across a situation in which a vibratory system is required to run near resonance. In the past, approaches have been made to design such auxiliary spring mass tuned absorbers for the safety of the structures. This research focuses on the development and optimization of continuously tuned mass absorbers as a substitute to the discretely tuned mass absorbers (spring- mass system). After conducting the study of structural behavior, the boundary condition and frequency to which the absorber is to be tuned are determined. The Modal analysis approach is used to determine mode shapes and frequencies. The absorber is designed and optimized using the topology optimization tool, which simultaneously designs, optimizes and tunes the absorber to the desired frequency. The tuned, optimized absorber, after post processing, is attached to the target structure. The number of the absorbers are increased to amplify bandwidth and thereby upgrade the safety of structure for a wide range of frequency. The frequency response analysis is carried out using various combinations of structure and number of absorber cell.

COMPARISON OF ABSORBABLE EXTRA LONG TERM POLY HYDROXY BUTYRATE SUTURE VS NON ABSORBABLE (POLYPROPYLENE SUTURE FOR ABDOMINAL WALL CLOSURE

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Mallikarjun

2015-07-01

Full Text Available PURPOSE: The aim of study is to compare Continuous technique with non - absorbable sutures, Interrupted technique with non - absorbable sutures and Continuous technique with slowly absorbable sutures Focusing mainly on incidence of incisional hernias, burst abdomen, wound infections, chronic wound pain, suture sinus, stitch granuloma, time for rectus closure. METHODOLOGY : Study was conducted for a period of one year on 271 randomized patients with primary elective midline laparotomy in our hospital . patients are divided into group I includes 102 patients with continuous technique using non absorbable polypropylene, group II includes 91 patients with interrupted technique using non absorbable polypropylene and group III includes 78 patients with continuous slowly absorbable polyhydroxybutyrate. RESULTS: No significant difference observed in incidence of wound infections and burst abdomen in all the 3 groups but relatively higher incidence of wound infections in noted our hospital. Incidence of stich granuloma suture sinus and chronic wound pain is more with interrupted technique than continuous technique and are more with non - absor bable suture material. CONCLUSION: Incidence of incisional hernias, suture complications like suture sinus, stitch granuloma can be more effectively reduced with slowly absorbable continuous sutures.

The Relationship between Ethical Decision Making and Ethical Reasoning in Information Technology Students

Science.gov (United States)

Woodward, Belle; Davis, Diane C.; Hodis, Flaviu A.

2007-01-01

This study examined undergraduate information technology (IT) students' (N = 122) level of ethical reasoning and decision making at a Midwestern university. The purpose was to determine whether IT students' level of ethical reasoning provided information about the degree of their ethical decision making. The Defining Issues Test-2 (DIT-2) was used…

Students' Geocognition of Deep Time, Conceptualized in an Informal Educational Setting

Science.gov (United States)

Clary, Renee M.; Brzusek, Robert F.; Wandersee, James H.

2009-01-01

Students in a Landscape Architecture Design 1 course (N = 25) at a research university in the southern US developed design solutions implementing geologic time for an informal education site. Those students who employed abstract metaphors for their designs (n = 8) were more successful than students who proceeded with a linear design construct.…

Shock absorber

International Nuclear Information System (INIS)

Nemeth, J.D.

1981-01-01

A shock absorber for the support of piping and components in a nuclear power plant is described. It combines a high degree of stiffness under sudden shocks, e.g. seismic disturbances, with the ability to allow for thermal expansion without resistance when so required. (JIW)

21 CFR 880.5300 - Medical absorbent fiber.

Science.gov (United States)

2010-04-01

... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Medical absorbent fiber. 880.5300 Section 880.5300 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED... Devices § 880.5300 Medical absorbent fiber. (a) Identification. A medical absorbent fiber is a device...

Information Seeking Behaviour of Mathematicians: Scientists and Students

Science.gov (United States)

Sapa, Remigiusz; Krakowska, Monika; Janiak, Malgorzata

2014-01-01

Introduction: The paper presents original research designed to explore and compare selected aspects of the information seeking behaviour of mathematicians (scientists and students) on the Internet. Method: The data were gathered through a questionnaire distributed at the end of 2011 and in January 2012. Twenty-nine professional mathematicians and…

System of Information in Conceptual Maps for students of Computer Engineering.

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Lydia Rosa Ríos Rodríguez

2014-06-01

Full Text Available The university students, in their daily activities make some decisions which contribute in their professional formation; in many occasions they don't have the enough help to make it in the best way. The systems of information constitute an important alternative to take into consideration in these cases. This work refers to the experience of the department of Computer Engineering of the University of Sancti Spíritus José Martí Pérez (UNISS in the conception and creation of a system of information for the students of the career Computer Engineering on the discipline Artificial Intelligence which uses the conceptual maps as form of representing the information.

Absorbed Doses to Embryo from Intravenous Urography at Selected Radiological Departments in Slovakia

International Nuclear Information System (INIS)

Karkus, R.; Nikodemova, D.; Horvathova, M.

2003-01-01

Actual legislation used in radiological protection requires quality assurance program for decreasing radiation load of patients from radiological examinations. The information about irradiation of pregnant women is very important, because the embryo is more radiosensitive as adult organism. On the basis of absence of unified calculations or measurements of absorbed doses to embryo from various radiological examinations in Slovakia we present in this study the values of absorbed doses to embryo from intravenous urography at selected radiological departments in Slovakia. Absorbed doses to embryo were obtained by measurement and calculation using the simulation of irradiation of pregnant woman by intravenous urography. The results of our study indicate, that absorbed doses to embryo were at various radiological departments considerably different, depending on type of X-ray machine and different settings of technical parameters of X-ray machine. In accordance with worldwide trend it is necessary to decrease radiation load of patients as low as possible level. Differences in radiation load between radiological departments indicate, that it is necessary to continue in solving of this problem and perform measurements and calculations of absorbed doses to embryo at different types of X-ray machines and at different examinations, where the embryo is in direct beam of X-ray. (author)

The Amount of Media and Information Literacy Among Isfahan University of Medical Sciences' Students Using Iranian Media and Information Literacy Questionnaire (IMILQ).

Science.gov (United States)

Ashrafi-Rizi, Hasan; Ramezani, Amir; Koupaei, Hamed Aghajani; Kazempour, Zahra

2014-12-01

Media and Information literacy (MIL) enables people to interpret and make informed judgments as users of information and media, as well as to become skillful creators and producers of information and media messages in their own right. The purpose of this research was to determine the amount of Media and Information Literacy among Isfahan University of Medical Sciences' students using Iranian Media and Information Literacy Questionnaire (IMILQ). This is an applied analytical survey research in which the data were collected by a researcher made questionnaire, provided based on specialists' viewpoints and valid scientific works. Its validity and reliability were confirmed by Library and Information Sciences specialists and Cronbach's alpha (r=0.89) respectively. Statistical population consisted of all students in Isfahan University of Medical Sciences (6000 cases) and the samples were 361. Sampling method was random stratified sampling. Data were analyzed by descriptive and inferential statistics. The findings showed that the mean level of Media and Information Literacy among Isfahan University of Medical Sciences' students was 3.34±0.444 (higher than average). The highest mean was promotion of scientific degree with 3.84±0.975 and the lowest mean was difficulties in starting research with 2.50±1.08. There was significant difference between educational degree, college type and family's income and amount of Media and Information Literacy. The results showed that the students didn't have enough skills in starting the research, defining the research subject as well as confining the research subject. In general, all students and education practitioners should pay special attention to factors affecting in improving Media and Information Literacy as a main capability in using printed and electronic media.

Student Access to Information Technology and Perceptions of Future Opportunities in Two Small Labrador Communities

Directory of Open Access Journals (Sweden)

Della Healey

2002-02-01

Full Text Available The potential of information technology is increasingly being recognized for the access it provides to educational and vocational opportunities. In Canada, many small schools in rural communities have taken advantage of information technologies to help overcome geographic isolation for students. This article is about students in two small and geographically isolated Labrador communities. Twenty senior students were found to have varying degrees of access to information technologies. Differences were found in their perceptions of the benefits of information technology for their educational and vocational futures.

Concepts of Information Literacy and Information Literacy Standards among Undergraduate Students in Public and Private Universities in the State of Kuwait

Science.gov (United States)

Al-Issa, Reham E.

2013-01-01

The purpose of this qualitative study was to explore the experiences of undergraduate college students attending a public and a private university in the State of Kuwait to understand how they develop their understanding and valuing of information literacy and information literacy standards. Data from student and faculty interviews and student…

Effects of Brief Integrated Information Literacy Education Sessions on Undergraduate Engineering Students' Interdisciplinary Research

Science.gov (United States)

Talikka, Marja; Soukka, Risto; Eskelinen, Harri

2018-01-01

Engineering students often conduct information searches without sufficient consideration of the context of their research topic. This article discusses how development of a new information literacy (IL) mindset through instruction in integrated IL education affects students' understanding of research problems and formulation of information search…

An ultra-broadband multilayered graphene absorber

KAUST Repository

Amin, Muhammad; Farhat, Mohamed; Bagci, Hakan

2013-01-01

An ultra-broadband multilayered graphene absorber operating at terahertz (THz) frequencies is proposed. The absorber design makes use of three mechanisms: (i) The graphene layers are asymmetrically patterned to support higher order surface plasmon

High-efficiency ventilated metamaterial absorber at low frequency

Science.gov (United States)

Wu, Xiaoxiao; Au-Yeung, Ka Yan; Li, Xin; Roberts, Robert Christopher; Tian, Jingxuan; Hu, Chuandeng; Huang, Yingzhou; Wang, Shuxia; Yang, Zhiyu; Wen, Weijia

2018-03-01

We demonstrate a ventilated metamaterial absorber operating at low frequency (90%) has been achieved in both simulations and experiments. This high-efficiency absorption under the ventilation condition originates from the weak coupling of two identical split tube resonators constituting the absorber, which leads to the hybridization of the degenerate eigenmodes and breaks the absorption upper limit of 50% for conventional transmissive symmetric acoustic absorbers. The absorber can also be extended to an array and work in free space. The absorber should have potential applications in acoustic engineering where both noise reduction and ventilation are required.

Thermal Shielding Effects of a Damaged Shock Absorber and an Intact Shock Absorber

Energy Technology Data Exchange (ETDEWEB)

Bang, K. S.; Lee, J. C.; Kim, K. Y.; Seo, C. S.; Seo, K. S. [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

2011-05-15

In order to safely transport the radioactive waste arising from the hot test of an ACP(Advanced Spent Fuel Conditioning Process) a shipping package is required. Therefore, KAERI is developing a shipping package to transport the radioactive waste arising from the ACPF during a hot test. The regulatory requirements for a Type B package are specified in the Korea Most Act 2009-37, IAEA Safety Standard Series No. TS-R-1, and US 10 CFR Part. These regulatory guidelines classify the hot cell cask as a Type B package, and state that the Type B package for transporting radioactive materials should be able to withstand a test sequence consisting of a 9 m drop onto an unyielding surface, a 1 m drop onto a puncture bar, and a 30 minute fully engulfing fire. Greiner et al. investigated the thermal protection provided by shock absorbers by using the CAFE computer code. To evaluate the thermal shielding effect of the shock absorber, the thermal test was performed by using a 1/2 scale model with a shock absorber which was damaged by both a 9 m drop test and a 1 m puncture test. For the purpose of comparison, the thermal test was also carried out by using a 1/2 scale model with the intact shock absorber

On (m, n)-absorbing ideals of commutative rings

Indian Academy of Sciences (India)

with respect to various ring theoretic constructions and study (m, n)-absorbing ideals in several commutative rings. For example, in a Bézout ring or a Boolean ring, an ideal is an (m, n)-absorbing ideal if and only if it is an n-absorbing ideal, and in an almost. Dedekind domain every (m, n)-absorbing ideal is a product of at ...

Informal Learning in Academic Student Organizations: An Exploratory Examination of Student-Faculty Interactions and the Relationship to Leadership

Science.gov (United States)

Holzweiss, Peggy C.; Parrott, Kelli Peck; Cole, Bryan R.

2013-01-01

This exploratory study examined informal learning opportunities that exist within student organizations. The researchers specifically isolated academic organizations and the interactions between students and faculty that may occur in this context. Findings indicate that 81% of participants experienced interactions with faculty within the context…

How adult students in Information Studies use a scoring rubric for the development of their information literacy skills

NARCIS (Netherlands)

A.A.J. (Jos) van Helvoort

2012-01-01

The purpose of this article is to expand on a previous study on the development of a scoring rubric for information literacy1. The present paper examines how students at the Department of Information Services and Information Management, The Hague University, use the scoring rubric for their school

Design of a nonlinear torsional vibration absorber

Science.gov (United States)

Tahir, Ammaar Bin

Tuned mass dampers (TMD) utilizing linear spring mechanisms to mitigate destructive vibrations are commonly used in practice. A TMD is usually tuned for a specific resonant frequency or an operating frequency of a system. Recently, nonlinear vibration absorbers attracted attention of researchers due to some potential advantages they possess over the TMDs. The nonlinear vibration absorber, or the nonlinear energy sink (NES), has an advantage of being effective over a broad range of excitation frequencies, which makes it more suitable for systems with several resonant frequencies, or for a system with varying excitation frequency. Vibration dissipation mechanism in an NES is passive and ensures that there is no energy backflow to the primary system. In this study, an experimental setup of a rotational system has been designed for validation of the concept of nonlinear torsional vibration absorber with geometrically induced cubic stiffness nonlinearity. Dimensions of the primary system have been optimized so as to get the first natural frequency of the system to be fairly low. This was done in order to excite the dynamic system for torsional vibration response by the available motor. Experiments have been performed to obtain the modal parameters of the system. Based on the obtained modal parameters, the design optimization of the nonlinear torsional vibration absorber was carried out using an equivalent 2-DOF modal model. The optimality criterion was chosen to be maximization of energy dissipation in the nonlinear absorber attached to the equivalent 2-DOF system. The optimized design parameters of the nonlinear absorber were tested on the original 5-DOF system numerically. A comparison was made between the performance of linear and nonlinear absorbers using the numerical models. The comparison showed the superiority of the nonlinear absorber over its linear counterpart for the given set of primary system parameters as the vibration energy dissipation in the former is

Informal Content and Student Note-Taking in Advanced Mathematics Classes

Science.gov (United States)

Fukawa-Connelly, Timothy; Weber, Keith; Mejía-Ramos, Juan Pablo

2017-01-01

This study investigates 3 hypotheses about proof-based mathematics instruction: (a) that lectures include informal content (ways of thinking and reasoning about advanced mathematics that are not captured by formal symbolic statements), (b) that informal content is usually presented orally but not written on the board, and (c) that students do not…

Information retrieval, critical appraisal and knowledge of evidence-based dentistry among Finnish dental students.

Science.gov (United States)

Nieminen, P; Virtanen, J I

2017-11-01

One of the core skills of competent dentist is the ability to search and analyse high-quality evidence. Problems in understanding the basic aspects of knowledge-based information may impede its implementation into clinical practice. We examined how Finnish dental students acquire scientific information and how familiar they are with methods for evaluating scientific evidence related to clinical questions. All fifth-year dental students (n = 120) at the three universities in Finland received a self-administered questionnaire. The three most commonly used sources of information were colleagues, the commercial Health Gate Portal for dental practitioners and personal lecture notes. Although students rarely read scientific journals, they did find that they possess at least passable or even good skills in literature retrieval. Three questions related to the appraisal of evidence in dentistry revealed that students' knowledge of evidence-based dentistry was inadequate to critically evaluate clinical research findings. Most students seem to lack knowledge of key methodological evidence-based terms. The present curricula in dental schools fail to encourage the students to search and acquire knowledge wider than their patients themselves do. Universities have the responsibility to teach dentists various methods of critical appraisal to cope with scientific information. © 2016 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

Information Management Processes for Extraction of Student Dropout Indicators in Courses in Distance Mode

Directory of Open Access Journals (Sweden)

Renata Maria Abrantes Baracho

2016-04-01

Full Text Available This research addresses the use of information management processes in order to extract student dropout indicators in distance mode courses. Distance education in Brazil aims to facilitate access to information. The MEC (Ministry of Education announced, in the second semester of 2013, that the main obstacles faced by institutions offering courses in this mode were students dropping out and the resistance of both educators and students to this mode. The research used a mixed methodology, qualitative and quantitative, to obtain student dropout indicators. The factors found and validated in this research were: the lack of interest from students, insufficient training in the use of the virtual learning environment for students, structural problems in the schools that were chosen to offer the course, students without e-mail, incoherent answers to activities to the course, lack of knowledge on the part of the student when using the computer tool. The scenario considered was a course offered in distance mode called Aluno Integrado (Integrated Student

HBCUs inform students and the community about cervical cancer.

Science.gov (United States)

Green, Julian S; Williams, Deloris G; Scott, Dolores B; Madison, Shirley B; Comer, Kimberly D; Haynes, Joseph A

2009-12-01

In summary, HBCUs can no longer remain reactive, but must spearhead efforts to increase both the health of the student body, as well as the community at large. HBCUs should collaboratively initiate a "Call to Action", whereby policies and programs could be created to aid in the prevention of HPV and other STIs. To support this action, HBCUs could more actively pursue funding sources that support both universities and the communities in which they exist. Student orientation could be redefined to include short courses in STI awareness and prevention, and be communicated in a manner that is professional, yet engaging to students. Moreover, university departments which have an interest in the health of communities should supervise these efforts. The knowledge of university faculty members within departments of Nursing, Social Work, Public Health, Rehabilitation Counseling and Physical Education should extend beyond the classroom and into the community. Clark commented, "Perhaps course content across departments could be revised to encompass an increased focus on practice skills which support awareness and prevention efforts". Through employment, volunteerism and student internships, each of these disciplines have established relationships with the surrounding community and understand the associated critical needs. Such relationships provide the best environment for both the creation and implementation of services, and provide students with a model of how to "give back" to the community by utilizing their education. Campus health centers should be more prevention-driven beyond the distribution of condoms and pamphlets, to collaborate with local area high schools and community-based organizations to create an information network accessible to students and community residents. Additionally, health centers should promote the availability of HPV vaccination, which depending on state of residence and age, may be free or available at a discounted cost. According to Bynum

Performance evaluation of CFRP-rubber shock absorbers

Science.gov (United States)

Lamanna, Giuseppe; Sepe, Raffaele

2014-05-01

In the present work a numerical investigation on the energy absorbing capability of dedicated structural components made of a carbon fiber reinforced polymer and an emulsion polymerised styrene butadiene rubber is reported. The shock absorbers are devices designed to absorb large amounts of energy by sacrificing their own structural integrity. Their aim is to cushion the effects of an impact phenomenon with the intent to preserve other structures from global failure or local damaging. Another important role of shock absorbers is reducing the peak of the acceleration showed during an impact phenomenon. This effect is of considerable interest in the case of vehicles to preserve passengers' safety. Static and dynamic numerical results are compared with experimental ones in terms of mean crushing forces, energy and peak crushing. The global performance of the absorbers has been evaluated by referencing to a proposed quality index.

Performance evaluation of CFRP-rubber shock absorbers

Energy Technology Data Exchange (ETDEWEB)

Lamanna, Giuseppe, E-mail: giuseppe.lamanna@unina2.it; Sepe, Raffaele, E-mail: giuseppe.lamanna@unina2.it [Department of Industrial and Information Engineering, Second University of Naples, via Roma, 29 - 81031 Aversa (Italy)

2014-05-15

In the present work a numerical investigation on the energy absorbing capability of dedicated structural components made of a carbon fiber reinforced polymer and an emulsion polymerised styrene butadiene rubber is reported. The shock absorbers are devices designed to absorb large amounts of energy by sacrificing their own structural integrity. Their aim is to cushion the effects of an impact phenomenon with the intent to preserve other structures from global failure or local damaging. Another important role of shock absorbers is reducing the peak of the acceleration showed during an impact phenomenon. This effect is of considerable interest in the case of vehicles to preserve passengers’ safety. Static and dynamic numerical results are compared with experimental ones in terms of mean crushing forces, energy and peak crushing. The global performance of the absorbers has been evaluated by referencing to a proposed quality index.

Burnable absorber coated nuclear fuel

International Nuclear Information System (INIS)

Chubb, W.; Radford, K.C.; Parks, B.H.

1984-01-01

A nuclear fuel body which is at least partially covered by a burnable neutron absorber layer is provided with a hydrophobic overcoat generally covering the burnable absorber layer and bonded directly to it. In a method for providing a UO 2 fuel pellet with a zirconium diboride burnable poison layer, the fuel body is provided with an intermediate niobium layer. (author)

Information processing style used by Compulsory Secondary Education students

Directory of Open Access Journals (Sweden)

Alfredo Campos

2016-10-01

Full Text Available Mental images are mental representations of people, objects and situations that are not present and are formed by using the imagination. Many studies have addressed this psychological ability, its typology and its involvement in the academic environment. Along these lines, the aim of our study was to assess the information processing style (verbal, object, spatial scales, and mental rotation that is commonly used by students from different specialties of Compulsory Secondary Education. To that end, two tests: The Mental Rotation Test (MRT and the Object-Spatial Imagery and Verbal Questionnaire (OSIVQ were administered to a sample of 126 Compulsory Secondary Education students. MRT assessed any significant difference in the ability to mentally rotate images depending on gender and specialty. Significant differences were found by specialty, showing that science students had better ability to mentally rotate images than humanities ones. Significant differences were found by gender and specialty in the OSIVQ. Men showed better spatial and verbal processing style than women, and humanities students excelled in object processing (in comparison to science students and in verbal processing (in comparison to science and art students.

Precision test method by x-ray absorbent clay

International Nuclear Information System (INIS)

Nakadai, Toru; Matsukawa, Hideyuki; Sekita, Jun-ichiro; Murakoshi, Atsushi.

1982-01-01

In X-ray penetration photography of such as welds with reinforcing metal and castings of complex shape, the X-ray absorbent clay developed to eliminate various disadvantages of the conventional absorbents was further studied for better application. The results of the usage are as follows. Because the X-ray absorbent is clay, it is flexible in form, and gives good adhesion to test objects. In the welds and castings mentioned, it is effective for reducing the scattered ray, accordingly, it results in superior images. The following matters are described: contrast in radiographs, the required conditions for X-ray absorbents in general, the properties of the absorbent (absorption coefficient, consistency, density), improvement in radiographs by means of the X-ray absorbent clay (wall thickness compensation, masking, the application together with narrow-field irradiation photography). (Mori, K.)

An ultra-broadband multilayered graphene absorber

KAUST Repository

Amin, Muhammad

2013-01-01

An ultra-broadband multilayered graphene absorber operating at terahertz (THz) frequencies is proposed. The absorber design makes use of three mechanisms: (i) The graphene layers are asymmetrically patterned to support higher order surface plasmon modes that destructively interfere with the dipolar mode and generate electromagnetically induced absorption. (ii) The patterned graphene layers biased at different gate voltages backedup with dielectric substrates are stacked on top of each other. The resulting absorber is polarization dependent but has an ultra-broadband of operation. (iii) Graphene\\'s damping factor is increased by lowering its electron mobility to 1000cm 2=Vs. Indeed, numerical experiments demonstrate that with only three layers, bandwidth of 90% absorption can be extended upto 7THz, which is drastically larger than only few THz of bandwidth that can be achieved with existing metallic/graphene absorbers. © 2013 Optical Society of America.

Information Behavior and Japanese Students: How Can an Understanding of the Research Process Lead to Better Information Literacy?

Science.gov (United States)

Ishimura, Yusuke

2013-01-01

Academic librarians are striving to better serve international students as this emerging population grows on university campuses. Past studies of international students generally focus on linguistic and cultural differences in relation to information literacy skills development. However, it is necessary to go beyond these factors to better serve…

Energy Absorbing Effectiveness – Different Approaches

Directory of Open Access Journals (Sweden)

Kotełko Maria

2018-03-01

Full Text Available In the paper the study of different crashworthiness indicators used to evaluate energy absorbing effectiveness of thin-walled energy absorbers is presented. Several different indicators are used to assess an effectiveness of two types of absorbing structures, namely thin-walled prismatic column with flaws and thin-walled prismatic frustum (hollow or foam filled in both cases subjected to axial compressive impact load. The indicators are calculated for different materials and different geometrical parameters. The problem of selection of the most appropriate and general indicators is discussed.

Microwave absorbing property of a hybrid absorbent with carbonyl irons coating on the graphite

Energy Technology Data Exchange (ETDEWEB)

Xu, Yonggang, E-mail: xuyonggang221@163.com [Science and Technology on Electromagnetic Scattering Laboratory, Shanghai, 200438 (China); Yan, Zhenqiang; Zhang, Deyuan [Bionic and Micro/Nano/Bio Manufacturing Technology Research Center, School of Mechanical Engineering and Automation, Beihang University, Beijing 100191 (China)

2015-11-30

Graphical abstract: The absorbing property could be enhanced as the CIPs coated on the graphite. - Highlights: • Absorbers filled with CIPs coating on the graphite was fabricated. • The permittivity and permeability increased as CIPs coated. • The CIP materials enhanced the electromagnetic property. • The graphite coated CIPs were effective in 2–18 GHz. - Abstract: The hybrid absorbent filled with carbonyl iron particles (CIPs) coating on the graphite was prepared using a chemical vapor decomposition (CVD) process. X-ray diffraction (XRD) patterns were done to analyze the particle crystal grain structure. The complex permittivity and permeability were measured using a vector network analyzer in the frequency range of 2–18 GHz. The results showed that α-Fe appeared in the super-lattice diffraction peaks in XRD graph. The composites added CIPs coating on the graphite had a higher permittivity and imaginary permeability due to the superior microwave dielectric loss and magnetic loss of the CIPs. The reflection loss (RL) result showed that composites filled with 5 vol% Fe-graphite had an excellent absorbing property in the 2–18 GHz, the minimum RL was −25.14 dB at 6 mm and −26.52 dB at 8 mm, respectively.

ASSESSING STUDENTS’ SATISFACTION WITH QUALITY OF SERVICE OF STUDENTS INFORMATION SYSTEM

Directory of Open Access Journals (Sweden)

Suleiman AL KHATTAB

2011-01-01

Full Text Available With the increasing number of higher education institutions in Jordan,universities are competing to attract more students. To achieve this goal, theuniversities are competing to provide the students with all possiblesatisfaction means through providing efficient e-services. This papermeasures the satisfaction of the students at Al-Hussein Bin Talal University,Jordan, with the quality of e-services. It mainly concentrates on the students’satisfaction with the in-house developed Student Information System (SIS.To measure the satisfaction of the students, a questionnaire was developedand distributed to a sample of the university students. The questionnaireforms were collected and analyzed. The results of the questionnaire showedthat the students were satisfied by the transition to e-services and the SIShas a positive impact on the students’ satisfaction. The research alsoprovides the university with some suggestions to improve the SIS and,therefore, meet the demand of the students.

Year 7 Students, Information Literacy, and Transfer: A Grounded Theory

Science.gov (United States)

Herring, James E.

2011-01-01

This study examined the views of year 7 students, teacher librarians, and teachers in three state secondary schools in rural New South Wales, Australia, on information literacy and transfer. The aims of the study included the development of a grounded theory in relation to information literacy and transfer in these schools. The study's perspective…

Adjustable Shock Absorbers

OpenAIRE

Adamiec, Radek

2012-01-01

Bakalářská práce obsahuje přehled používaných tlumičů osobních automobilů, závodních automobilů a motocyklů. Jsou zde popsány systémy t lumením, konstrukce tlumičů a vidlic používaných u motocyklů. Dále je zde přehled prvků používaných u podvozků automobilů. This bachelor´s thesis contains the survey of the shock absorbers of passenger cars, racing cars and motorcycles. Are described damping systems, the design used shock absorbers and forks for motorcycles. Then there is the list of the e...

Cultural Differences in the Health Information Environments and Practices between Finnish and Japanese University Students

Science.gov (United States)

Askola, Kreetta; Atsushi, Toshimori; Huotari, Maija-Leena

2010-01-01

Introduction: The aim of this study was to identify cultural differences in the information environment and information practices, namely active seeking and encountering, of web-based health information between Finnish and Japanese university students. Method: The data were gathered with a Web-based survey among first-year university students at…

Slow and Fast Light in an Electro-Absorber

DEFF Research Database (Denmark)

Öhman, Filip; Bermejo Ramirez, Andres; Sales, Salvador

2006-01-01

We demonstrate controllable and large time delay in cascaded semiconductor saturable absorbers and amplifiers. The possibility of further increasing the tuneable phase shift by utilizing field screening effects in the quantum well absorber is demonstrated.......We demonstrate controllable and large time delay in cascaded semiconductor saturable absorbers and amplifiers. The possibility of further increasing the tuneable phase shift by utilizing field screening effects in the quantum well absorber is demonstrated....

Ethics and Information Technology: Some Principles To Guide Students.

Science.gov (United States)

Bodi, Sonia

1998-01-01

Discusses the ethical challenges of information technology, particularly electronic indexes and the Internet; considers principles to guide students; and discusses possible librarian responses. Topics include Kant's categorical imperative, ownership, right to privacy, social responsibility, self-respect, plagiarism and copyrights, and three…

Performance of an absorbing concentrating solar collectors

International Nuclear Information System (INIS)

Imadojemu, H.

1990-01-01

This paper reports on a comparison of the efficiency of an absorbing fluid parabolic trough concentrating solar collector and a traditional concentrating collector that was made. In the absorbing fluid collector, black liquid flows through a glass tube absorber while the same black liquid flows through a selective black coated copper tube absorber while the same black fluid flows through a selective black coated copper tube absorber in the traditional collector. After a careful study of the properties of available black liquids, a mixture of water and black ink was chosen as the black absorbing medium or transfer fluid. In the black liquid glass collector there is a slightly improved efficiency based on beam radiation as a result of the direct absorption process and an increase in the effective transmittance absorptance. At worst the efficiency of this collector equals that of the traditional concentrating collector when the efficiency is based on total radiation. The collector's reflecting surfaces were made of aluminum sheet, parabolic line focus and with cylindrical receivers. The ease of manufacture and reduced cost per unit energy collected, in addition to the clean and pollution free mode of energy conversion, makes it very attractive

Characterization of load dependent creep behavior in medically relevant absorbable polymers.

Science.gov (United States)

Dreher, Maureen L; Nagaraja, Srinidhi; Bui, Hieu; Hong, Danny

2014-01-01

While synthetic absorbable polymers have a substantial history of use in medical devices, their use is expanding and becoming more prevalent for devices where long term loading and structural support is required. In addition, there is evidence that current absorbable medical devices may experience permanent deformations, warping (out of plane twisting), and geometric changes in vivo. For clinical indications with long term loading or structural support requirements, understanding the material's viscoelastic properties becomes increasingly important whereas these properties have not been used historically as preclinical indications of performance or design considerations. In this study we measured the static creep, creep recovery and cyclic creep responses of common medically relevant absorbable materials (i.e., poly(l-lactide, PLLA) and poly(l-co-glycolide, PLGA) over a range of physiologically relevant loading magnitudes. The results indicate that both PLLA and PLGA exhibit creep behavior and failure at loads significantly less than the yield or ultimate properties of the material and that significant material specific responses to loading exist. In addition, we identified a strong correlation between the extent of creep in the material and its crystallinity. Results of the study provide new information on the creep behavior of PLLA and PLGA and support the use of viscoelastic properties of absorbable polymers as part of the material selection process. © 2013 Published by Elsevier Ltd.

ABSORBENCY CHARACTERISTICS OF PESHTAMALS: TRADITIONAL TURKISH WOVEN CLOTHES

Directory of Open Access Journals (Sweden)

KESKIN Reyhan

2014-05-01

Full Text Available Absorbency of textiles is defined as the ability of taking in a fluid in the manner of a sponge. Absorbency is required for comfort properties in so me clothes such as sportswear and underwear clothing, for drying properties in napkins, towels and bathrobes, for health concerns in some medical textiles such as bandages, gauze and absorbent cotton, and for cleaning properties in washclothes and mops. In this study five different fabric samples (three woven 100% cotton fabrics A, B and P respectively at plain, twill, and peshtamal weaving patterns and two 100% cotton terry towels T1 and T2 were tested. The absorbency properties of the samples were evaluated according to the droplet test, sinking time test and wicking height tests (pottasium chromate test. Peshtamal samples showed better absorbency results than plain and twill weaves and lower but close results to towel samples according to the droplet test, sinking time test and wicking height tests. The absorbency properties of peshtamals showed results close to towel samples. The void content of peshtamals is higher than plain and twill samples but closer and lower than towel samples. The good absorbency results of peshtamals might be due to the void content of peshtamals which is higher than plain and twill samples but closer and lower than towel samples. Peshtamals which are good in absorbency and light in weight might be used widespreadly in daily life for their high absorbency, and on travel for weight saving purposes.

Examining the Relationship between Faculty-Librarian Collaboration and First-Year Students' Information Literacy Abilities

Science.gov (United States)

Douglas, Veronica Arellano; Rabinowitz, Celia E.

2016-01-01

Using surveys, interviews, and a rubric-based assessment of student research essays, the St. Mary's College of Maryland Assessment in Action team investigated the relationship between faculty-librarian collaboration in a First Year Seminar (FYS) course and students' demonstrated information literacy (IL) abilities. In gathering information on the…

Possible Quantum Absorber Effects in Cortical Synchronization

Science.gov (United States)

Kämpf, Uwe

The Wheeler-Feynman transactional "absorber" approach was proposed originally to account for anomalous resonance coupling between spatio-temporally distant measurement partners in entangled quantum states of so-called Einstein-Podolsky-Rosen paradoxes, e.g. of spatio-temporal non-locality, quantum teleportation, etc. Applied to quantum brain dynamics, however, this view provides an anticipative resonance coupling model for aspects of cortical synchronization and recurrent visual action control. It is proposed to consider the registered activation patterns of neuronal loops in so-called synfire chains not as a result of retarded brain communication processes, but rather as surface effects of a system of standing waves generated in the depth of visual processing. According to this view, they arise from a counterbalance between the actual input's delayed bottom-up data streams and top-down recurrent information-processing of advanced anticipative signals in a Wheeler-Feynman-type absorber mode. In the framework of a "time-loop" model, findings about mirror neurons in the brain cortex are suggested to be at least partially associated with temporal rather than spatial mirror functions of visual processing, similar to phase conjugate adaptive resonance-coupling in nonlinear optics.

Mars mission program for primary students: Building student and teacher skills in science, technology, engineering and mathematics

Science.gov (United States)

Mathers, Naomi; Pakakis, Michael; Christie, Ian

2011-09-01

The Victorian Space Science Education Centre (VSSEC) scenario-based programs, including the Mission to Mars and Mission to the Orbiting Space Laboratory, utilize methodologies such as hands-on applications, immersive learning, integrated technologies, critical thinking and mentoring. The use of a scenario provides a real-life context and purpose to what students might otherwise consider disjointed information. These programs engage students in the areas of maths and science, and highlight potential career paths in science and engineering. The introduction of a scenario-based program for primary students engages students in maths and science at a younger age, addressing the issues of basic numeracy and science literacy, thus laying the foundation for stronger senior science initiatives. Primary students absorb more information within the context of the scenario, and presenting information they can see, hear, touch and smell creates a memorable learning and sensory experience. The mission also supports development of teacher skills in the delivery of hands-on science and helps build their confidence to teach science. The Primary Mission to the Mars Base gives primary school students access to an environment and equipment not available in schools. Students wear flight suits for the duration of the program to immerse them in the experience of being an astronaut. Astronauts work in the VSSEC Space Laboratory, which is transformed into a Mars base for the primary program, to conduct experiments in areas such as robotics, human physiology, microbiology, nanotechnology and environmental science. Specialist mission control software has been developed by La Trobe University Centre for Games Technology to provide age appropriate Information and Communication Technology (ICT) based problem solving and support the concept of a mission. Students in Mission Control observe the astronauts working in the space laboratory and talk to them via the AV system. This interactive

Informational Literacy and Information and Communication Technologies Use by Secondary Education Students in Spain: A Descriptive Study

Science.gov (United States)

Conde, Ma. José Rodríguez; Migueláñez, Susana Olmos; Molina, María Pinto; Abad, Fernando Martínez; Riaza, Blanca García

2011-01-01

Informational literacy and the use of technologies by Secondary Education students in Spain: A descriptive study. The development of Information and Communication Technologies (ICTs), together with their application to research carried out on educational areas, are factors which contribute to the promotion of a new educative model constructed on…

3D Image Display Courses for Information Media Students.

Science.gov (United States)

Yanaka, Kazuhisa; Yamanouchi, Toshiaki

2016-01-01

Three-dimensional displays are used extensively in movies and games. These displays are also essential in mixed reality, where virtual and real spaces overlap. Therefore, engineers and creators should be trained to master 3D display technologies. For this reason, the Department of Information Media at the Kanagawa Institute of Technology has launched two 3D image display courses specifically designed for students who aim to become information media engineers and creators.

Information visualization courses for students with a computer science background.

Science.gov (United States)

Kerren, Andreas

2013-01-01

Linnaeus University offers two master's courses in information visualization for computer science students with programming experience. This article briefly describes the syllabi, exercises, and practices developed for these courses.

Comments on liquid hydrogen absorbers for MICE

International Nuclear Information System (INIS)

Green, Michael A.

2003-01-01

This report describes the heat transfer problems associated with a liquid hydrogen absorber for the MICE experiment. This report describes a technique for modeling heat transfer from the outside world, to the absorber case and in its vacuum vessel, to the hydrogen and then into helium gas at 14 K. Also presented are the equation for free convection cooling of the liquid hydrogen in the absorber

Information Networks and Integration: Institutional Influences on Experiences and Persistence of Beginning Students

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Karp, Melinda Mechur; Hughes, Katherine L.

2008-01-01

This article uses data from a qualitative exploratory study at two urban community colleges to examine experiences of beginning students, paying close attention to the influence that institutional information networks have on students' perceptions and persistence. The authors find that students' reported integration, or sense of belonging in the…

Prioritizing students’ mobile centric information access needs: A case of postgraduate students

CSIR Research Space (South Africa)

Chipangura, B

2013-11-01

Full Text Available Students enrolled at Open and Distance Learning (ODL) institutions tend to combine study and work and to succeed they have to optimize free time for studying. Therefore, many ODL students access and interact with information in a mobile context...

Internet Use Habits of Students of the Department of Information Management, Hacettepe University, Ankara

Science.gov (United States)

Ucak, Nazan Ozenc

2007-01-01

The frequency and other characteristics of Internet use of students studying at the Department of Information Management at Hacettep University in Ankara, Turkey, are examined. According to the findings, students prefer electronic media to printed media, they find the easy accessibility of the information more important than the other qualities,…

Information Seeking Behaviours of Business Students and the Development of Academic Digital Libraries

Directory of Open Access Journals (Sweden)

Kelli WooShue

2006-12-01

Full Text Available Objectives ‐ To gain insight into the extent to which user information‐seeking behaviours should inform the design and development of Digital Libraries in an academic setting, a study was carried out at Dalhousie University, Canada to explore the information‐seeking behaviours of business students.Methods ‐ The students studied were drawn from the School of Business Administration at Dalhousie University, Canada. The study was based on qualitative and quantitative data collected through a survey, in‐depth semi‐structured interviews, observational study and document analysis. Qualitative case study data was coded using QSR N6 qualitative data analysis software. The data was categorized using Atkinson’s “Model of BusinessInformation Users’ Expectations” and Renda and Straccia‘s personalized collaborative DL model. Atkinson’s model defines the expectations of business students in terms of cost, time,effort required, pleasure and the avoidance of pain. Renda and Straccia’s model of a personalized and collaborative digital library centres around three concepts: actors, objects, and functionality. The survey data was analysed using the Zoomerang software.Results ‐ The study results revealed that students tend to select resources based on cost(free or for fee, accessibility, ease of use, speed of delivery (of results, and convenience. The results showed that similar to Atkinson’s findings, the business students’ information seeking behaviour is influenced by the concepts of cost‐benefit and break‐even analyses that underlie business education. Concerning speed of delivery and convenience, the organization of the resources was paramount. Students preferred user‐defined resource lists, alert services, and expert‐created business resource collections. When asked about the usefulness of potential digital library functionalities, students valued a personalized user interface and communal virtual spaces to share

Uptake and translocation of zinc absorbed through roots and fruiting organs in peanuts

International Nuclear Information System (INIS)

Chahal, R.S.; Singh, S.P.; Shukla, U.C.

1979-01-01

Peanut plants (Arachis hypogaea L.) are known to absorb Ca, P and S through the fruiting organs but information on Zn uptake pattern is lacking. Therefore, a green-house experiment was conducted to study the uptake and translocation of Zn when applied in the rooting and fruiting zones of peanut plants. To locate the pathway and distribution of radioactive Zn, autoradiographs of plants were also taken. Zinc uptake data and autoradiographs indicated that a substantial amount of 65 Zn was absorbed through the fruiting organs (auxillary system). Of the total 65 Zn in the whole plant, 55.2 per cent was absorbed through roots and remaining 44.8 per cent through fruiting organs. Zinc was translocated to all the plant parts regardless of its absorption through roots or fruiting organs. The highest zinc concentration was recorded in the kernels, followed by leaves, stem and the shell. (Auth.)

Information Seeking Behaviour of Senior High School Student on General Election in Indonesia

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Margareta Aulia Rahman

2015-01-01

Full Text Available The development of information technology affects students in searching and finding information, particularly information regarding the General Election. Theexplosion of information on mass media about the elections resulted impact (both positive and negative to the potential voters. Nowadays, media plays role as a tool for political parties to lead public opinion to support their parties. Based on the data provided by General Election Commission (KPU in 2014, 20% of voters were identified as students (teens. This is a qualitative research with case study methodwhich aims to gain insight about interpretation, understanding, perceptions and feelings of teenage voters’ behavior in searching and finding information about general election in Indonesia year 2014. The data were collected by conducting interview and observation. Informants (six persons in this study were students, aged 17-18 years, who studying in government senior high school in Depok. The results of this study indicates that informants using social media to keep update about general election. Besides, they also gain information from their parents and close friends. Unfortunatelly, they were not able to identify which information which are correct or not, so they rely on people around them to make sure whether they did right decision. Therefore, this study also suggest that KPU needs to develop promotion strategy that suitable for teens about general election.

Method of absorbance correction in a spectroscopic heating value sensor

Science.gov (United States)

Saveliev, Alexei; Jangale, Vilas Vyankatrao; Zelepouga, Sergeui; Pratapas, John

2013-09-17

A method and apparatus for absorbance correction in a spectroscopic heating value sensor in which a reference light intensity measurement is made on a non-absorbing reference fluid, a light intensity measurement is made on a sample fluid, and a measured light absorbance of the sample fluid is determined. A corrective light intensity measurement at a non-absorbing wavelength of the sample fluid is made on the sample fluid from which an absorbance correction factor is determined. The absorbance correction factor is then applied to the measured light absorbance of the sample fluid to arrive at a true or accurate absorbance for the sample fluid.

Spanish students' use of the Internet for mental health information and support seeking.

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Montagni, Ilaria; Parizot, Isabelle; Horgan, Aine; Gonzalez-Caballero, Juan-Luis; Almenara-Barrios, José; Lagares-Franco, Carolina; Peralta-Sáez, Juan-Luis; Chauvin, Pierre; Amaddeo, Francesco

2016-06-01

The Internet is a growing source of information for health in general, with university student being online almost daily. Evaluating their use of the Internet for mental health information and support can help understanding if online tools and websites should be used for mental health promotion and, to some extent, care. A survey was conducted with more than 600 students of Law, Nursing and Computer Science of the University of Cadiz in Spain to determine their general use of the Internet and their perceptions and trust in using this medium for mental health information. Data were collected using a 25-item-questionnaire and findings indicated that students had a strong distrust in online mental health information, notwithstanding their daily use of the Internet. The frequency and methods of their research on the Internet correlated with their health status, their medical consultations and with certain socio-demographic characteristics. © The Author(s) 2014.

The Effect of Creative Drama on Student Achievement in the Course of Information Technologies

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Özek, Müzeyyen Bulut

2016-01-01

The purpose of this study is to determine the effect of creative drama on student achievement in the Information Technologies course. The study was carried out for the unit "Tomorrow's Technology" which is the first unit of Information Technologies course. For this study, 89 sixth grade students were selected from primary school in…

Describing Images: A Case Study of Visual Literacy among Library and Information Science Students

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Beaudoin, Joan E.

2016-01-01

This paper reports on a study that examined the development of pedagogical methods for increasing the visual literacy skills of a group of library and information science students. Through a series of three assignments, students were asked to provide descriptive information for a set of historical photographs and record reflections on their…

Effect of information literacy training course on information literacy skills of undergraduate students of Isfahan University of Medical Sciences based on ACRL standards.

Science.gov (United States)

Karimi, Zohreh; Ashrafi-Rizi, Hasan; Papi, Ahmad; Shahrzadi, Leila; Hassanzadeh, Akbar

2015-01-01

Information literacy is the basis for lifelong learning. Information literacy skills, especially for student in an environment that is full of information from multiple technologies are being developed is equally important. Information literacy is a set of cognitive and practical skills and like any other science, proper training is needed, and standard-based education is definitely better and evaluation would be easier. This study aimed to determine the impact of information literacy training course on information literacy skills of Isfahan University of Medical Sciences students based on ACRL standard in 2012. The study method is semi-experience with two group design (with pre-test and post-test) and applied. The data collection toll was a questionnaire assessing student's information literacy that developed by Davarpanah and Siamak and validity was confirmed by professional librarians and reliability as measured by Cronbach's alpha, was 0.83. The sample consisted of 50 undergraduate students from Isfahan University of Medical Sciences that by random sampling method was perch in both case and control groups. Before and after the training (once a week), a questionnaire was distributed between the two groups. This training was held in a classroom equipped with computers with internet access and in addition to training using brochures and librarian presentation, interactive methods such as discussion and exercises were used. The data were analyzed using SPSS version 20 software and two level of descriptive (mean and SD) and inferential statistics (t-test and t-paired). The results showed that the students' information literacy scores before the training was lower than average, so that in the control group was 32.96 and in the case group was 33.24; while information literacy scores in the case group significantly increased after the training (46.68). Also, the effect of education, respectively had a greater impact on the ability to access information (the second

Motivation, Critical Thinking and Academic Verification of High School Students' Information-seeking Behavior

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Z Hidayat

2018-01-01

Full Text Available High school students have known as Gen Y or Z and their media using can be understand on their information-seeking behavior. This research’s purposes were: 1 to analyze the students’ motivation; 2 to analyze the critical thinking and academic verification; 3 to analyze the information-seeking behavior. This study used quantitative approach through survey among 1125 respondents in nine clusters, i.e. Central, East, North, West, and South of Jakarta, Tangerang, Bekasi, Depok, and Bogor. Schools sampling based on "the best schools rank" by the government, while respondents have taken by accidental in each school. Construct of questionnaire included measurement of motivation, critical thinking and academic verification, and the information-seeking behavior at all. The results showed that the motivations of the use of Internet were dominated by habit to interact and be entertained while on the academic needs are still relatively small but increasing significantly. Students’ self-efficacy, performance and achievement goals tend to be high motives, however the science learning value, and learning environment stimulation were average low motives. High school students indicated that they think critically about the various things that become content primarily in social media but less critical of the academic information subjects. Unfortunately, high school students did not conducted academic verification on the data and information but students tend to do plagiarism.

Adaptive inertial shock-absorber

International Nuclear Information System (INIS)

Faraj, Rami; Holnicki-Szulc, Jan; Knap, Lech; Seńko, Jarosław

2016-01-01

This paper introduces and discusses a new concept of impact absorption by means of impact energy management and storage in dedicated rotating inertial discs. The effectiveness of the concept is demonstrated in a selected case-study involving spinning management, a recently developed novel impact-absorber. A specific control technique performed on this device is demonstrated to be the main source of significant improvement in the overall efficiency of impact damping process. The influence of various parameters on the performance of the shock-absorber is investigated. Design and manufacturing challenges and directions of further research are formulated. (paper)

Information Use and Attention Deferment in College Student Loan Decisions: Evidence from a Debt Letter Experiment

Science.gov (United States)

Darolia, Rajeev; Harper, Casandra

2018-01-01

A prominent concern is that college students are harming their long-term economic prospects by making student loan decisions without full information about the implications of their choices. We designed an experiment to examine students' responses to a debt letter, an increasingly popular strategy to provide easily accessible information about…

Microscopic analysis of saturable absorbers: Semiconductor saturable absorber mirrors versus graphene

Energy Technology Data Exchange (ETDEWEB)

Hader, J.; Moloney, J. V. [Nonlinear Control Strategies, Inc., 3542 N. Geronimo Ave., Tucson, Arizona 85705 (United States); College of Optical Sciences, University of Arizona, Tucson, Arizona 85721 (United States); Yang, H.-J.; Scheller, M. [College of Optical Sciences, University of Arizona, Tucson, Arizona 85721 (United States); Koch, S. W. [Department of Physics and Materials Sciences Center, Philipps Universität Marburg, Renthof 5, 35032 Marburg (Germany)

2016-02-07

Fully microscopic many-body calculations are used to study the influence of strong sub-picosecond pulses on the carrier distributions and corresponding optical response in saturable absorbers used for mode-locking—semiconductor (quantum well) saturable absorber mirrors (SESAMs) and single layer graphene based saturable absorber mirrors (GSAMs). Unlike in GSAMs, the saturation fluence and recovery time in SESAMs show a strong spectral dependence. While the saturation fluence in the SESAM is minimal at the excitonic bandgap, the optimal recovery time and least pulse distortion due to group delay dispersion are found for excitation higher in the first subband. For excitation near the SESAM bandgap, the saturation fluence is about one tenth of that in the GSAM. At energies above the bandgap, the fluences in both systems become similar. A strong dependence of the saturation fluence on the pulse width in both systems is caused by carrier relaxation during the pulse. The recovery time in graphene is found to be about two to four times faster than that in the SESAMs. The occurrence of negative differential transmission in graphene is shown to be caused by dopant related carriers. In SESAMs, a negative differential transmission is found when exciting below the excitonic resonance where excitation induced dephasing leads to an enhancement of the absorption. Comparisons of the simulation data to the experiment show a very good quantitative agreement.

A Preliminary Comparison of Student and Professional Motivations for Choosing Information Systems

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Brooks, Nita; Korzaan, Melinda; Ceccucci, Wendy

2014-01-01

Demand for qualified information systems professionals continues to rise. Additionally, over the past decade, enrollment in information systems-related educational programs has declined. In order to understand why and to better understand how to position information systems undergraduate programs to recruit and retain students, this study provides…

Adaptive Piezoelectric Absorber for Active Vibration Control

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Sven Herold

2016-02-01

Full Text Available Passive vibration control solutions are often limited to working reliably at one design point. Especially applied to lightweight structures, which tend to have unwanted vibration, active vibration control approaches can outperform passive solutions. To generate dynamic forces in a narrow frequency band, passive single-degree-of-freedom oscillators are frequently used as vibration absorbers and neutralizers. In order to respond to changes in system properties and/or the frequency of excitation forces, in this work, adaptive vibration compensation by a tunable piezoelectric vibration absorber is investigated. A special design containing piezoelectric stack actuators is used to cover a large tuning range for the natural frequency of the adaptive vibration absorber, while also the utilization as an active dynamic inertial mass actuator for active control concepts is possible, which can help to implement a broadband vibration control system. An analytical model is set up to derive general design rules for the system. An absorber prototype is set up and validated experimentally for both use cases of an adaptive vibration absorber and inertial mass actuator. Finally, the adaptive vibration control system is installed and tested with a basic truss structure in the laboratory, using both the possibility to adjust the properties of the absorber and active control.

Student Perspectives on the Teaching of Geographical Information Systems (GIS) in Geography Degrees

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Seremet, Mehmet; Chalkley, Brian

2015-01-01

In an era when graduate employability is a key concern, the teaching of geographical information systems (GIS) has become a subject of considerable interest. This paper reports on a study of the GIS student learning experience using student survey data from six UK geography undergraduate programmes. The findings show that although students'…

Mg II-Absorbing Galaxies in the UltraVISTA Survey

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Stroupe, Darren; Lundgren, Britt

2018-01-01

Light that is emitted from distant quasars can become partially absorbed by intervening gaseous structures, including galaxies, in its path toward Earth, revealing information about the chemical content, degree of ionization, organization and evolution of these structures through time. In this project, quasar spectra are used to probe the halos of foreground galaxies at a mean redshift of z=1.1 in the COSMOS Field. Mg II absorption lines in Sloan Digital Sky Survey quasar spectra are paired with galaxies in the UltraVISTA catalog at an impact parameter less than 200 kpc. A sample of 77 strong Mg II absorbers with a rest-frame equivalent width ≥ 0.3 Å and redshift from 0.34 < z < 2.21 are investigated to find equivalent width ratios of Mg II, C IV and Fe II absorption lines, and their relation to the impact parameter and the star formation rates, stellar masses, environments and redshifts of their host galaxies.

Personal Digital Information Archiving among Students of Social Sciences and Humanities

Science.gov (United States)

Krtalic, Maja; Marcetic, Hana; Micunovic, Milijana

2016-01-01

Introduction: As both academic citizens and active participants in information society who use information, students produce huge amounts of personal digital data and documents. It is therefore important to raise questions about their awareness, responsibility, tendencies and activities they undertake to preserve their collective digital heritage.…

Absorbent material for type a radioactive materials packaging containing liquids

International Nuclear Information System (INIS)

Saunders, G.A.

1989-11-01

The application of absorbent materials to the packaging and transport of liquid radioactive materials in Type A packages has not been reported in the literature. However, a significant body of research exists on absorbent materials for personal hygiene products such as diapers. Absorption capacity is dependent on both the absorbent material and the liquid being absorbed. Theoretical principles for capillary absorption in both the horizontal and the vertical plane indicate that small contact angle between the absorbent fibre and the liquid, and a small inter-fibre pore size are important. Some fluid parameters such as viscosity affect the rate of absorption but not the final absorption capacity. There appears to be little comparability between results obtained for the same absorbent and fluid using different test procedures. Test samples of materials from several classes of potential absorbents have been evaluated in this study, and shown to have a wide range of absorbent capacities. Foams, natural fibres, artificial fibres and granular materials are all potentially useful absorbents, with capacities ranging from as little as 0.86 to as much as 40.6 grams of distilled water per gram of absorbent. Two experimental procedures for evaluating the absorbent capacity of these materials have been detailed in this report, and found suitable for evaluating granular, fibrous or foam materials. Compression of the absorbent material reduces its capacity, but parameters such as relative humidity, pH, temperature, and viscosity appear to have little significant influence on capacity. When the materials were loaded to 50% of their one-minute absorbency, subsequent loss of the absorbed liquid was generally minimal. All of the absorbent materials rapidly lost their absorbed water through evaporation within twenty-four hours in still air at 21 degrees C and 50% relative humidity

Selective solar absorber emittance measurement at elevated temperature

Science.gov (United States)

Giraud, Philémon; Braillon, Julien; Raccurt, Olivier

2017-06-01

Durability of solar components for CSP (Concentrated Solar Power Plant) technologies is a key point to lower cost and ensure their large deployment. These technologies concentrated the solar radiation by means of mirrors on a receiver tube where it is collected as thermal energy. The absorbers are submitted to strong environmental constraints and the degradation of their optical properties (emittance and solar absorbance) have a direct impact on performance. The characterization of a material in such condition is complicated and requires advanced apparatuses, and different measurement methods exist for the determination of the two quantities of relevance regarding an absorber, which are its emittance and its solar absorbance. The objective is to develop new optical equipment for measure the emittance of this solar absorber at elevated temperature. In this paper, we present an optical bench developed for emittance measurement on absorbers is conditions of use. Results will be shown, with a discussion of some factors of influence over this measurement and how to control them.

Student Technology Use in the Information-Seeking and Information-Gathering Process: A Critical Incident Approach for Benchmarking Performance

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Cordes, Sean

2012-01-01

This article is an exploratory study of student behavior using online tools to do project-based work for a library science course at a mid-sized Midwestern public university. The population was 22 net generation students aged 18-24, who were enrolled in an Introduction to Information Resources course. The study was designed to better understand…

Attitude of medical students towards the use of audio visual aids during didactic lectures in pharmacology in a medical college of central India

OpenAIRE

Mehul Agrawal; Rajanish Kumar Sankdia

2016-01-01

Background: Students favour teaching methods employing audio visual aids over didactic lectures not using these aids. However, the optimum use of audio visual aids is essential for deriving their benefits. During a lecture, both the visual and auditory senses are used to absorb information. Different methods of lecture are and ndash; chalk and board, power point presentations (PPT) and mix of aids. This study was done to know the students' preference regarding the various audio visual aids, ...

Students' Attitudes toward ABI/INFORM on CD-ROM: A Factor Analysis.

Science.gov (United States)

Wang, Vicky; Lau, Shuk-fong

Two years after the introduction of CD-ROM bibliographic database searching in the Memphis State University libraries (Tennessee), a survey was conducted to examine students' attitudes toward the business database, ABI/INFORM. ABI/INFORM contains indexes and abstracts of articles from over 800 journals on management, accounting, banking, human…

Research methods for students, academics and professionals information management and systems

CERN Document Server

Williamson, Kirsty

2002-01-01

Research is such an important subject for information professionals that there will always be a need for effective guides to it. Research skills are a prerequisite for those who want to work successfully in information environments, an essential set of tools which enable information workers to become information professionals. This book focuses on producing critical consumers of research. It also goes some way towards producing researchers in the fields of information management and systems.The first edition of this book was enthusiastically received by researchers, students and information pr

Factors Related to the Selection of Information Sources: A Study of Ramkhamhaeng University Regional Campuses Graduate Students

Science.gov (United States)

Angchun, Peemasak

2011-01-01

This study assessed students' satisfaction with Ramkhamhaeng University regional library services (RURLs) and the perceived quality of information retrieved from other information sources. In particular, this study investigated factors relating to regional students' selection of information sources to meet their information needs. The researcher…

Assessing Change in High School Student Information Literacy Using the Tool for Real-Time Assessment of Information Literacy Skills

Science.gov (United States)

Kovalik, Cindy L.; Yutzey, Susan D.; Piazza, Laura M.

2012-01-01

Change in high school student information literacy (IL) knowledge and skills, from freshman year to senior year in high school was the focus of this quasi-experimental research project. Researchers used a free information literacy skills assessment tool entitled TRAILS (Tool for Real-time Assessment of Information Literacy Skills) to measure…

The performance of ethics course for increasing students intention to blow the whistle using information technology

Science.gov (United States)

Munandar, Agus

2017-10-01

The profession of accounting believes that ethics is very important in the workplace. For that, profession recommends that ethics course should be taught for accounting student. Unfornutaly, the impact of ethics courses on accounting students intention to blow the whistle on organizational wrongdoing using information technology have not been determined. For that, this paper attempts to measure the impact of ethics courses on accounting student intention to blow the whistle on organizational wrongdoing. The research using experimental design for investigate the impact of ethic course on students intention to blow the whistle using IT. The respondents for this study are 40 accountig students. The respondent were given the ethical scenarios and were measured their intention to blow the whistle using information technology. This result of study reports that 70% of accounting student who completed ethic course indicated high intention to blow the whistle on organizational wrongdoing using information technology. Hence, ethics course is beneficial for increasing accounting professionalism especially their intentio to blow the whistle wrongdoing using information technology.

A shock absorber model for structure-borne noise analyses

Science.gov (United States)

Benaziz, Marouane; Nacivet, Samuel; Thouverez, Fabrice

2015-08-01

Shock absorbers are often responsible for undesirable structure-borne noise in cars. The early numerical prediction of this noise in the automobile development process can save time and money and yet remains a challenge for industry. In this paper, a new approach to predicting shock absorber structure-borne noise is proposed; it consists in modelling the shock absorber and including the main nonlinear phenomena responsible for discontinuities in the response. The model set forth herein features: compressible fluid behaviour, nonlinear flow rate-pressure relations, valve mechanical equations and rubber mounts. The piston, base valve and complete shock absorber model are compared with experimental results. Sensitivity of the shock absorber response is evaluated and the most important parameters are classified. The response envelope is also computed. This shock absorber model is able to accurately reproduce local nonlinear phenomena and improves our state of knowledge on potential noise sources within the shock absorber.

The Discursive Construction of Literature Review: An Examination of Chinese PhD Students' Information Behavior

Science.gov (United States)

Liao, Jiadong; Han, Jinghe

2012-01-01

Information behaviour is a pertinent practice throughout students' research work. However, research students, particularly those with English as an additional language, experienced challenges and complications when studying in a western university. Issues relating to their information behaviour during the research process has largely been…

Strategy of health information seeking among physicians, medical residents, and students after introducing digital library and information technology in teaching hospitals of Iran.

Science.gov (United States)

kahouei, Mehdi; Alaei, Safollah; Shariat Panahi, Sohaila Sadat Ghazavi; Zadeh, Jamileh Mahdi

2015-05-01

It is important for physicians, medical students and health care organizations of developing countries to use reliable clinical information in order to deliver the best practice. Therefore, health sector of Iran endeavored to encourage physicians and medical students to integrate research findings into practice since 2005. Several educational interventions in the areas of information technology and databases were performed. Digital library was introduced in the teaching hospitals. The purpose of this study was to investigate whether these interventions increased the use of evidence-based health information resources among physicians, medical residents and students. This descriptive study involved 315 physicians, assistants and medical students in affiliated hospitals of Semnan University of medical sciences in 2013. A total 52.9% of physicians and 79.5% of medical residents and students always used patient data. 81.3% of physicians and 67.1% of medical residents and students reported using their own experiences, 26.5% of physicians and 16.9% of medical residents and students always used databases such as PubMed and MEDLINE for patient care. Our results revealed that in spite of providing educational and technical infrastructures for accomplishment of research utilization in medical education, the study subjects often identified and used what they regarded as reliable and relevant information from sources that do not truly represent the best evidence that is available. © 2015 Chinese Cochrane Center, West China Hospital of Sichuan University and Wiley Publishing Asia Pty Ltd.

Strategies, Obstacles, and Attitudes: Student Collaboration in Information Seeking and Synthesis Projects

Science.gov (United States)

Leeder, Chris; Shah, Chirag

2016-01-01

Introduction: While group work that takes place in education contexts has been studied by researchers, student collaborative research behaviour has received less attention. This empirical case study examined the strategies that students use and the obstacles they encounter while working in collaborative information seeking contexts on an in-class…

Financial Information Source, Knowledge, and Practices of College Students from Diverse Backgrounds

Science.gov (United States)

Mimura, Yoko; Koonce, Joan; Plunkett, Scott W.; Pleskus, Lindsey

2015-01-01

Using cross-sectional data, we examined the financial information sources, financial knowledge, and financial practices of young adults, many of whom are first generation college students, ethnic minorities, and immigrants or children of immigrants. Participants (n = 1,249) were undergraduate students at a large regional comprehensive university.…

Gauging Workplace Readiness: Assessing the Information Needs of Engineering Co-op Students

Science.gov (United States)

Jeffryes, Jon; Lafferty, Meghan

2012-01-01

Librarians at the Science and Engineering Library at the University of Minnesota surveyed engineering students participating in a work placement as part of the cooperative education program. The survey asked about students' on-the-job information usage, comfort level accessing different types of engineering literature, and experience learning to…

Students' Informal Inference about the Binomial Distribution of "Bunny Hops": A Dialogic Perspective

Science.gov (United States)

Kazak, Sibel; Fujita, Taro; Wegerif, Rupert

2016-01-01

The study explores the development of 11-year-old students' informal inference about random bunny hops through student talk and use of computer simulation tools. Our aim in this paper is to draw on dialogic theory to explain how students make shifts in perspective, from intuition-based reasoning to more powerful, formal ways of using probabilistic…

On the use of information technologies in the process of physical education of student youth

Directory of Open Access Journals (Sweden)

Andriy Shankovsky

2017-06-01

Full Text Available Topicality. The determining of the level of effectiveness of using information technology in shaping the informational educational environment of students’ physical education in the system of education and beyond, the identification of the general theoretical basis of study, necessary for didactic development of approaches of the use of information technology in the physical education of students, requires the organization of a special research. Objectives of the study: to analyze and systematize modern scientific and methodological knowledge and the results of practical experience of domestic and foreign researchers in the sphere of the use of information technologies in the practice of physical education of students; to develop informational and methodical multimedia system “Рerfectum corpus”, as a means of raising the level of theoretical knowledge of students in the process of physical education. Research results. The results of the qualifying experiment led us to develop the multimedia information and methodical system “Рerfectum corpus” as an auxiliary means of training for the use in class and in the extracurricular format, which is intended for self-study and raising the level of theoretical knowledge, motivation of students for physical exercises. Each module of the multimedia information and methodical system “Рerfectum corpus” consists of sections that may contain background images, buttons and other options of visual representation. Conclusions. The analysis of scientific sources testifies that the use of information technologies in the practice of physical education of student youth opens new opportunities for increasing the efficiency of the process of physical education. The developed information-methodical system includes three modules: “Useful to know”, “Practice”, “Bonus".

The Cooling of a Liquid Absorber using a Small Cooler

International Nuclear Information System (INIS)

Baynham, D.E.; Bradshaw, T.W.; Green, M.A.; Ishimoto, S.; Liggins, N.

2005-01-01

This report discusses the use of small cryogenic coolers for cooling the Muon Ionization Cooling Experiment (MICE) liquid cryogen absorbers. Since the absorber must be able contain liquid helium as well liquid hydrogen, the characteristics of the available 4.2 K coolers are used here. The issues associated with connecting two-stage coolers to liquid absorbers are discussed. The projected heat flows into an absorber and the cool-down of the absorbers using the cooler are presented. The warm-up of the absorber is discussed. Special hydrogen safety issues that may result from the use of a cooler on the absorbers are also discussed

Design and development of radiation absorber for sighting beam line

International Nuclear Information System (INIS)

Sridhar, R.; Shukla, S.K.

2005-01-01

During the commissioning of Indus-2 , it is necessary to view the synchrotron radiation that will be emanating from the dipole exit ports. The 10 0 beam line from dipole 11 was earmarked for sighting beam line. The synchrotron radiation power density would be around 340 watts on the photon absorber inside the radiation absorber module, at the specified beam power of Indus-2. The beam striking on this photon absorber produces x-rays and Bremsstrahlung radiation. These are to be stopped and absorbed by radiation absorber. The photon absorber and the radiation absorber are integrated in a single vacuum chamber and actuated by a pneumatic cylinder connected using a bellow. Radiation absorber was needed to isolate the diagnostic components and to protect them from radiation a well as heat when they were not in use. The paper describes the design, calculation and development of the dynamic photon cum radiation absorber. The ultimate vacuum performance is also described. (author)

Student Assessment of the Master of Philosophy in Information ...

African Journals Online (AJOL)

The aim of the study was to determine student assessment of the Master of Philosophy (Mphil) and Master of Science (MSc) in Information Sciences Records and Archives Management (RAM) programmes and propose recommendations to enhance the course content and structure to meet the education and market needs ...

Thin absorbers for large-area soft X-ray microcalorimeters

Energy Technology Data Exchange (ETDEWEB)

Rocks, L. [Department of Physics, University of Wisconsin, Madison, WI 53706 (United States)]. E-mail: rocks@wisp.physics.wisc.edu; Anderson, M.B. [Department of Physics, University of Wisconsin, Madison, WI 53706 (United States); Bilgri, N. [Department of Physics, University of Wisconsin, Madison, WI 53706 (United States); Brekosky, R. [NASA/Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Gwynne Crowder, S. [Department of Physics, University of Wisconsin, Madison, WI 53706 (United States); Figueroa-Feliciano, E. [NASA/Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Kelley, R. [NASA/Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Kilbourne, C.A. [NASA/Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Lai, T. [Department of Physics, University of Wisconsin, Madison, WI 53706 (United States); Lindeman, M.A. [Department of Physics, University of Wisconsin, Madison, WI 53706 (United States); Man, J. [Department of Physics, University of Wisconsin, Madison, WI 53706 (United States); McCammon, D. [Department of Physics, University of Wisconsin, Madison, WI 53706 (United States); Nelms, K.L. [Department of Physics, University of Wisconsin, Madison, WI 53706 (United States); Porter, F.S. [NASA/Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Sivananthan, S. [University of Illinois at Chicago, Chicago, IL 60607 (United States); Vidugiris, G. [Department of Physics, University of Wisconsin, Madison, WI 53706 (United States); Zhao, J. [University of Illinois at Chicago, Chicago, IL 60607 (United States)

2006-04-15

The X-ray Quantum Calorimeter (XQC) sounding rocket experiment utilizes a microcalorimeter array for observing the diffuse soft X-ray background. Observations of such low surface-brightness targets require a large-area detector. We will be using an array of large absorbers. Good absorbers must rapidly and completely thermalize photons, have small heat capacity for high stopping efficiency and have good lateral thermal transport. For observing the soft X-ray background (energies <1 keV), the volume and heat capacity of absorber material can be kept to a minimum by making the absorbers only as thick as needed for high quantum efficiency at these low energies. These thin, large-area absorbers are not self-supporting and have poor lateral heat transport. Depositing the absorber material on a Si substrate provides support and improves lateral thermal conduction. We present heat capacity results for thin HgTe and thin Bi, each on Si substrates. We also describe the HgTe absorber fabrication.

Absorbed dose by a CMOS in radiotherapy

International Nuclear Information System (INIS)

Borja H, C. G.; Valero L, C. Y.; Guzman G, K. A.; Banuelos F, A.; Hernandez D, V. M.; Vega C, H. R.; Paredes G, L. C.

2011-10-01

Absorbed dose by a complementary metal oxide semiconductor (CMOS) circuit as part of a pacemaker, has been estimated using Monte Carlo calculations. For a cancer patient who is a pacemaker carrier, scattered radiation could damage pacemaker CMOS circuits affecting patient's health. Absorbed dose in CMOS circuit due to scattered photons is too small and therefore is not the cause of failures in pacemakers, but neutron calculations shown an absorbed dose that could cause damage in CMOS due to neutron-hydrogen interactions. (Author)

Health Information Needs and Reliability of Sources Among Nondegree Health Sciences Students: A Prerequisite for Designing eHealth Literacy.

Science.gov (United States)

Haruna, Hussein; Tshuma, Ndumiso; Hu, Xiao

Understanding health information needs and health-seeking behavior is a prerequisite for developing an electronic health information literacy (EHIL) or eHealth literacy program for nondegree health sciences students. At present, interest in researching health information needs and reliable sources paradigms has gained momentum in many countries. However, most studies focus on health professionals and students in higher education institutions. The present study was aimed at providing new insight and filling the existing gap by examining health information needs and reliability of sources among nondegree health sciences students in Tanzania. A cross-sectional study was conducted in 15 conveniently selected health training institutions, where 403 health sciences students were participated. Thirty health sciences students were both purposely and conveniently chosen from each health-training institution. The selected students were pursuing nursing and midwifery, clinical medicine, dentistry, environmental health sciences, pharmacy, and medical laboratory sciences courses. Involved students were either in their first year, second year, or third year of study. Health sciences students' health information needs focus on their educational requirements, clinical practice, and personal information. They use print, human, and electronic health information. They lack eHealth research skills in navigating health information resources and have insufficient facilities for accessing eHealth information, a lack of specialists in health information, high costs for subscription electronic information, and unawareness of the availability of free Internet and other online health-related databases. This study found that nondegree health sciences students have limited skills in EHIL. Thus, designing and incorporating EHIL skills programs into the curriculum of nondegree health sciences students is vital. EHIL is a requirement common to all health settings, learning environments, and

Student approaches for learning in medicine: what does it tell us about the informal curriculum?

Science.gov (United States)

Zhang, Jianzhen; Peterson, Raymond F; Ozolins, Ieva Z

2011-10-21

It has long been acknowledged that medical students frequently focus their learning on that which will enable them to pass examinations, and that they use a range of study approaches and resources in preparing for their examinations. A recent qualitative study identified that in addition to the formal curriculum, students are using a range of resources and study strategies which could be attributed to the informal curriculum. What is not clearly established is the extent to which these informal learning resources and strategies are utilized by medical students. The aim of this study was to establish the extent to which students in a graduate-entry medical program use various learning approaches to assist their learning and preparation for examinations, apart from those resources offered as part of the formal curriculum. A validated survey instrument was administered to 522 medical students. Factor analysis and internal consistence, descriptive analysis and comparisons with demographic variables were completed. The factor analysis identified eight scales with acceptable levels of internal consistency with an alpha coefficient between 0.72 and 0.96. Nearly 80% of the students reported that they were overwhelmed by the amount of work that was perceived necessary to complete the formal curriculum, with 74.3% believing that the informal learning approaches helped them pass the examinations. 61.3% believed that they prepared them to be good doctors. A variety of informal learning activities utilized by students included using past student notes (85.8%) and PBL tutor guides (62.7%), and being part of self-organised study groups (62.6%), and peer-led tutorials (60.2%). Almost all students accessed the formal school resources for at least 10% of their study time. Students in the first year of the program were more likely to rely on the formal curriculum resources compared to those of Year 2 (p = 0.008). Curriculum planners should examine the level of use of informal

Digital Natives and Digital Immigrants: A Study of Information Technology and Information Systems (IT/IS) Usage between Students and Faculty of Nigerian Universities

Science.gov (United States)

Ololube, Nwachukwu Prince; Kpolovie, Peter James; Amaele, Samuel; Amanchukwu, Rose N.; Briggs, Teinye

2013-01-01

It is presumed that Nigerian students and teachers have been unable to find effective ways to use technology in the classroom and other aspects of their teaching and learning. Yet, considerable debate remains over the most efficient techniques and procedures to measure students and faculties information technology and information systems (IT/IS)…

Siegmund duality with applications to the neutral Moran model conditioned on never being absorbed

International Nuclear Information System (INIS)

Huillet, Thierry

2010-01-01

We first consider the classical neutral Moran model with two alleles whose fate is either to become extinct or to reach fixation. We study an ergodic version of the Moran model obtained by conditioning it to never hit the boundaries, making use of a Doob transform. We call it the recurrent Moran model. We show that the Siegmund dual of the recurrent Moran process exists and is a substochastic birth and death chain. Conditioning this process to exit in its natural absorbing state, we construct a process with a unique absorbing state which is intertwined to the original recurrent Moran process. The time needed for the intertwined process to first hit its absorbing state is related to the time needed to reach stationarity for the recurrent Moran process. Using spectral information on the intertwined chain, we extract limiting information on this first hitting time that shows that there is no abrupt relaxation to equilibrium for the recurrent Moran chain. This makes use of the relation between duality and intertwining and strong stationary times. Other related transition times of the recurrent Moran chain are also briefly investigated, namely the first return time to the ground state and the expected time needed to move from one end to the other end of the state space.

Air box shock absorber for a nuclear reactor

International Nuclear Information System (INIS)

Pradhan, A.V.; George, J.A.

1977-01-01

Disclosed is an air box type shock absorber primarily for use in an ice condenser compartment of a nuclear reactor. The shock absorber includes a back plate member and sheet metal top, bottom, and front members. The front member is prefolded, and controlled clearances are provided among the members for predetermined escape of air under impact and compression. Prefolded internal sheet metal stiffeners also absorb a portion of the kinetic energy imparted to the shock absorber, and limit rebound. An external restraining rod guided by restraining straps insures that the sheet metal front member compresses inward upon impact. 6 claims, 11 figures

Absorber element for fast breeder reactor

International Nuclear Information System (INIS)

Verset, L.

1987-01-01

This absorber element is characterized by a new head which avoids an accident disconnection of the mobil absorber. This head is made by a superior piece which can take shore up an adjusting ring on an adjusting bearing on the inferior piece. The intermediate piece is catched at the superior piece by a link of chain [fr

Students' Voices about Information and Communication Technology in Upper Secondary Schools

Science.gov (United States)

Olofsson, Anders D.; Lindberg, Ola J.; Fransson, Göran

2018-01-01

Purpose: The purpose of this paper is to explore upper secondary school students' voices on how information and communication technology (ICT) could structure and support their everyday activities and time at school. Design/methodology/approach: In all, 11 group interviews were conducted with a total of 46 students from three upper secondary…

The Impact of Caloric Information on College Students' Fast Food Purchasing Intentions

Science.gov (United States)

Zigmont, Victoria; Bulmer, Sandra Minor

2015-01-01

Background: Fast food establishments are available on many college campuses and, as a result, many students consume foods that are high in calories and contribute to unhealthy weight gain. Purpose: This study measured college students' knowledge of the calorie content for fast food items and whether the provision of calorie information for those…

Absorbed dose by a CMOS in radiotherapy

Energy Technology Data Exchange (ETDEWEB)

Borja H, C. G.; Valero L, C. Y.; Guzman G, K. A.; Banuelos F, A.; Hernandez D, V. M.; Vega C, H. R. [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Calle Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas (Mexico); Paredes G, L. C., E-mail: candy_borja@hotmail.com [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

2011-10-15

Absorbed dose by a complementary metal oxide semiconductor (CMOS) circuit as part of a pacemaker, has been estimated using Monte Carlo calculations. For a cancer patient who is a pacemaker carrier, scattered radiation could damage pacemaker CMOS circuits affecting patient's health. Absorbed dose in CMOS circuit due to scattered photons is too small and therefore is not the cause of failures in pacemakers, but neutron calculations shown an absorbed dose that could cause damage in CMOS due to neutron-hydrogen interactions. (Author)

Semiconductor saturable absorbers for ultrafast terahertz signals

DEFF Research Database (Denmark)

Hoffmann, Matthias C.; Turchinovich, Dmitry

2010-01-01

states, due to conduction band onparabolicity and scattering into satellite valleys in strong THz fields. Saturable absorber parameters, such as linear and nonsaturable transmission, and saturation fluence, are extracted by fits to a classic saturable absorber model. Further, we observe THz pulse......We demonstrate saturable absorber behavior of n-type semiconductors GaAs, GaP, and Ge in the terahertz THz frequency range at room temperature using nonlinear THz spectroscopy. The saturation mechanism is based on a decrease in electron conductivity of semiconductors at high electron momentum...

Graphene and Graphene Metamaterials for Terahertz Absorbers

DEFF Research Database (Denmark)

Andryieuski, Andrei; Pizzocchero, Filippo; Booth, Tim

2013-01-01

Graphene, due to the possibility to tune its conductivity, is the promising material for a range of the terahertz (THz) applications, such as tunable reflectors, absorbers, modulators, filters and polarization converters. Subwavelength structuring of graphene in order to form metamaterials allows...... for even more control over the THz waves. In this poster presentation I will show an elegant way to describe the graphene metamaterials and the design of graphene based absorbers. I will also present our recent experimental results on the graphene absorbers characterization....

Performance of a new carbon dioxide absorbent, Yabashi lime® as compared to conventional carbon dioxide absorbent during sevoflurane anesthesia in dogs.

Science.gov (United States)

Kondoh, Kei; Atiba, Ayman; Nagase, Kiyoshi; Ogawa, Shizuko; Miwa, Takashi; Katsumata, Teruya; Ueno, Hiroshi; Uzuka, Yuji

2015-08-01

In the present study, we compare a new carbon dioxide (CO2) absorbent, Yabashi lime(®) with a conventional CO2 absorbent, Sodasorb(®) as a control CO2 absorbent for Compound A (CA) and Carbon monoxide (CO) productions. Four dogs were anesthetized with sevoflurane. Each dog was anesthetized with four preparations, Yabashi lime(®) with high or low-flow rate of oxygen and control CO2 absorbent with high or low-flow rate. CA and CO concentrations in the anesthetic circuit, canister temperature and carbooxyhemoglobin (COHb) concentration in the blood were measured. Yabashi lime(®) did not produce CA. Control CO2 absorbent generated CA, and its concentration was significantly higher in low-flow rate than a high-flow rate. CO was generated only in low-flow rate groups, but there was no significance between Yabashi lime(®) groups and control CO2 absorbent groups. However, the CO concentration in the circuit could not be detected (≤5ppm), and no change was found in COHb level. Canister temperature was significantly higher in low-flow rate groups than high-flow rate groups. Furthermore, in low-flow rate groups, the lower layer of canister temperature in control CO2 absorbent group was significantly higher than Yabashi lime(®) group. CA and CO productions are thought to be related to the composition of CO2 absorbent, flow rate and canister temperature. Though CO concentration is equal, it might be safer to use Yabashi lime(®) with sevoflurane anesthesia in dogs than conventional CO2 absorbent at the point of CA production.

Use of information and communication technology among dental students at the University of Jordan.

Science.gov (United States)

Rajab, Lamis D; Baqain, Zaid H

2005-03-01

The aim of this study was to investigate the current knowledge, skills, and opinions of undergraduate dental students at the University of Jordan with respect to information communication technology (ICT). Dental students from the second, third, fourth, and fifth years were asked to complete a questionnaire presented in a lecture at the end of the second semester in the 2002-03 academic year. The response rate was 81 percent. Besides free and unlimited access to computers at the school of dentistry, 74 percent of the students had access to computers at home. However, 44 percent did not use a computer regularly. Male students were more regular and longer users of computers than females (pstudents (70 percent) judged themselves competent in information technology (IT) skills. More males felt competent in basic IT skills than did females (pstudents felt competent in word-processing skills (pstudents. More males used word processing for their studies than females (pStudents used computers for personal activities more frequently than for academic reasons. More males used computers for both academic (pstudents had access to the Internet at the university, and 54 percent had access at home. A high percentage of students (94 percent) indicated they were comfortable using the Internet, 75 percent said they were confident in the accuracy, and 80 percent said they were confident in the relevance of information obtained from the Internet. Most students (90 percent) used email. Most students (83 percent) supported the idea of placing lectures on the web, and 61.2 percent indicated that this would not influence lecture attendance. Students used the Internet more for personal reasons than for the study of dentistry. More clinical students used the Internet for dentistry than preclinical students (pstudents at the University of Jordan have access to substantial IT resources and demonstrated attitudes toward the computer and Internet technology and use that were similar to other

E-Learning Interactions, Information Technology Self Efficacy and Student Achievement at the University of Sharjah, UAE

Science.gov (United States)

Abulibdeh, Enas Said; Hassan, Sharifah Sariah Syed

2011-01-01

The purpose for this study is to validate a model of student interactions (student-content, student-instructor and student-student interactions and vicarious interaction), information technology self efficacy and student achievement. Investigation of the relationships was undertaken with structural equation modeling analyses, in a study with 250…

78 FR 52519 - Agency Information Collection Activities; Comment Request; Student Assistance General Provisions...

Science.gov (United States)

2013-08-23

...; Comment Request; Student Assistance General Provisions--Subpart K--Cash Management AGENCY: Federal Student... Provisions--Subpart K--Cash Management. OMB Control Number: 1845-0049. Type of Review: Revision of an... Collection Clearance Division, Privacy, Information and Records Management Services, Office of Management...

Information Literacy in Science Writing: How Students Find, Identify, and Use Scientific Literature

Science.gov (United States)

Klucevsek, Kristin M.; Brungard, Allison B.

2016-01-01

For undergraduate students to achieve science literacy, they must first develop information literacy skils. These skills align with Information Literacy Standards and include determining appropriate databases, distinguishing among resource types, and citing resources ethically. To effectively improve information literacy and science literacy, we…

Prediction of internet addiction based on information literacy among students of Iran University of Medical Sciences.

Science.gov (United States)

Langarizadeh, Mostafa; Naghipour, Majid; Tabatabaei, Seyed Mohsen; Mirzaei, Abbas; Vaghar, Mohammad Eslami

2018-02-01

A considerable group of internet users consists of university users; however, despite internet benefits and capabilities, internet overuse is a threat to societies especially to young people and students. The objective of this study was to determine the predictive role of information literacy in internet addiction among students of Iran University of Medical Sciences during 2016. This analytical cross-sectional study was conducted in Iran University of Medical Sciences in 2016. Using stratified random sampling method, 365 students from different disciplines were selected. Measuring tools included the Information Literacy Questionnaire, the Yang Online Drug Addiction Scale and the General Health Questionnaire. The collected data were analyzed by Pearson product-moment correlation, independent samples t-test and multiple linear regression using SPSS version 22. According to this study, 31.2% of students had internet addiction (29.9% were mildly addicted and 1.3% had severe addiction). There was a significant and inverse relationship between higher information literacy and internet addiction (R= -0.45) and (pInformation literacy" explained 20% of the variation in the outcome variable "Internet addiction". Students play a substantial role in promoting the cultural and scientific level of knowledge in society; the higher their information literacy, the lower the level of Internet addiction, and consequently the general health of society will improve. It seems that wise planning by authorities of Iran's universities to prevent internet addiction and to increase information literacy among students is needed.

Business Communication Skills in Information Systems (IS) Curricula: Perspectives of IS Educators and Students

Science.gov (United States)

Alshare, Khaled A.; Lane, Peggy L.; Miller, Donald

2011-01-01

As the importance of communication skills for students, regardless of their disciplines, becomes evident, it is important to determine whether colleges provide students with adequate opportunities to acquire such skills. The authors compared information systems (IS) educator and student perceptions of communication skills in IS curricula. Gender,…

Correlations in the three-dimensional Lyman-alpha forest contaminated by high column density absorbers

Science.gov (United States)

Rogers, Keir K.; Bird, Simeon; Peiris, Hiranya V.; Pontzen, Andrew; Font-Ribera, Andreu; Leistedt, Boris

2018-05-01

Correlations measured in three dimensions in the Lyman-alpha forest are contaminated by the presence of the damping wings of high column density (HCD) absorbing systems of neutral hydrogen (H I; having column densities N(H I) > 1.6 × 10^{17} atoms cm^{-2}), which extend significantly beyond the redshift-space location of the absorber. We measure this effect as a function of the column density of the HCD absorbers and redshift by measuring three-dimensional (3D) flux power spectra in cosmological hydrodynamical simulations from the Illustris project. Survey pipelines exclude regions containing the largest damping wings. We find that, even after this procedure, there is a scale-dependent correction to the 3D Lyman-alpha forest flux power spectrum from residual contamination. We model this residual using a simple physical model of the HCD absorbers as linearly biased tracers of the matter density distribution, convolved with their Voigt profiles and integrated over the column density distribution function. We recommend the use of this model over existing models used in data analysis, which approximate the damping wings as top-hats and so miss shape information in the extended wings. The simple `linear Voigt model' is statistically consistent with our simulation results for a mock residual contamination up to small scales (|k| account for the effect of the highest column density absorbers on the smallest scales (e.g. |k| > 0.4 h Mpc^{-1} for small damped Lyman-alpha absorbers; HCD absorbers with N(H I) ˜ 10^{21} atoms cm^{-2}). However, these systems are in any case preferentially removed from survey data. Our model is appropriate for an accurate analysis of the baryon acoustic oscillations feature. It is additionally essential for reconstructing the full shape of the 3D flux power spectrum.

Management Information Systems Students' Perception of Skills and Competencies - Towards Knowledge Based Community

Directory of Open Access Journals (Sweden)

Alev ELÇİ

2016-12-01

Full Text Available The increasing usage of Information and Communication Technologies in official borders of our business lives, starting from e-government and e-commerce applications, spreading towards our daily personal lives has made it difficult to ignore the importance of Management Information Systems (MIS. MIS, initially taught as a course in different disciplines, has now started to develop as a standalone interdisciplinary academic program in higher education. Besides curriculum standards suggestions and necessary skills and competencies for MIS education identified by academic and professional organizations, students' perceptions in these topics are also important. Thus while developing towards knowledge based community, the aim of this research is to identify MIS students' perceptions of essential skills and competencies in their educational, proffesional and personal lives. The sample group of this study are the students that are a member of social media MIS groups. The gathered quantitative data has been analyzed by an online survey. As a result, it has been evident that students find that information technical skills and competencies are crucial. The skills required for transition to knowledge based community; global working, multicultural, social responsibility, civic awareness, equal opportunity, gender and environmental awareness comes later.

Information Content in Radio Waves: Student Investigations in Radio Science

Science.gov (United States)

Jacobs, K.; Scaduto, T.

2013-12-01

We describe an inquiry-based instructional unit on information content in radio waves, created in the summer of 2013 as part of a MIT Haystack Observatory (Westford, MA) NSF Research Experiences for Teachers (RET) program. This topic is current and highly relevant, addressing science and technical aspects from radio astronomy, geodesy, and atmospheric research areas as well as Next Generation Science Standards (NGSS). Projects and activities range from simple classroom demonstrations and group investigations, to long term research projects incorporating data acquisition from both student-built instrumentation as well as online databases. Each of the core lessons is applied to one of the primary research centers at Haystack through an inquiry project that builds on previously developed units through the MIT Haystack RET program. In radio astronomy, students investigate the application of a simple and inexpensive software defined radio chip (RTL-SDR) for use in systems implementing a small and very small radio telescope (SRT and VSRT). Both of these systems allow students to explore fundamental principles of radio waves and interferometry as applied to radio astronomy. In ionospheric research, students track solar storms from the initial coronal mass ejection (using Solar Dynamics Observatory images) to the resulting variability in total electron density concentrations using data from the community standard Madrigal distributed database system maintained by MIT Haystack. Finally, students get to explore very long-baseline interferometry as it is used in geodetic studies by measuring crustal plate displacements over time. Alignment to NextGen standards is provided for each lesson and activity with emphasis on HS-PS4 'Waves and Their Applications in Technologies for Information Transfer'.

The Development of Information Search Expertise of Research Students

Science.gov (United States)

Kai-Wah Chu, Samuel; Law, Nancy

2008-01-01

This study identifies the development of information search expertise of 12 beginning research students (six in education and six in engineering) who were provided with a set of systematic search training sessions over a period of one year. The study adopts a longitudinal approach in investigating whether there were different stages in the…

Radar absorbing properties of carbon nanotubes/polymer ...

Indian Academy of Sciences (India)

This research is devoted to the study of radar absorbing properties of the composites, based on the epoxy binder and ... Radar absorbing materials; carbon nanotubes; nanocomposites; reflection loss. 1. ..... So, for example, the papers of [3–5 ...

How do practising clinicians and students apply newly learned causal information about mental disorders?

Science.gov (United States)

de Kwaadsteniet, Leontien; Kim, Nancy S; Yopchick, Jennelle E

2013-02-01

New causal theories explaining the aetiology of psychiatric disorders continuously appear in the literature. How might such new information directly impact clinical practice, to the degree that clinicians are aware of it and accept it? We investigated whether expert clinical psychologists and students use new causal information about psychiatric disorders according to rationalist norms in their diagnostic reasoning. Specifically, philosophical and Bayesian analyses suggest that it is rational to draw stronger inferences about the presence of a disorder when a client's presenting symptoms are from disparate locations in a causal theory of the disorder than when they are from proximal locations. In a controlled experiment, we presented experienced clinical psychologists and students with recently published causal theories for different disorders; specifically, these theories proposed how the symptoms of each disorder stem from a root cause. Participants viewed hypothetical clients with presenting proximal or diverse symptoms, and indicated either the likelihood that the client has the disorder, or what additional information they would seek out to help inform a diagnostic decision. Clinicians and students alike showed a strong preference for diverse evidence, over proximal evidence, in making diagnostic judgments and in seeking additional information. They did not show this preference in the control condition, in which they gave their own opinions prior to learning the causal information. These findings suggest that experienced clinical psychologists and students are likely to use newly learned causal knowledge in a normative, rational way in diagnostic reasoning. © 2011 Blackwell Publishing Ltd.

A Collaborative, Trilateral Approach to Bridging the Information Literacy Gap in Student Writing

Science.gov (United States)

Napier, Trenia; Parrott, Jill; Presley, Erin; Valley, Leslie

2018-01-01

As localized assessments confirm national findings that undergraduates struggle to integrate resources into research-based compositions effectively, data at one comprehensive public university indicate library sessions improve students' ability to locate and evaluate information, but students continue to struggle with the "use" component…

GEOMETRICAL OPTIMIZATION OF VEHICLE SHOCK ABSORBERS WITH MR FLUID

OpenAIRE

ENGIN, Tahsin; PARLAK, Zekeriya; ŞAHIN, Ismail; ÇALLI, Ismail

2016-01-01

Magnetorheological (MR) shock absorber have received remarkable attention in the last decade due to being a potential technology to conduct semi-active control in structures and mechanical systems in order to effectively suppress vibration. To develop performance of MR shock absorbers, optimal design of the dampers should be considered. The present study deals with optimal geometrical modeling of a MR shock absorber. Optimal design of the present shock absorber was carried out by using Taguch...

Information Literacy Skills Training: A Factor in Student Satisfaction with Access to High Demand Material

Science.gov (United States)

Perrett, Valerie

2010-01-01

In a survey of Business and Government, Law and Information Sciences students carried out at the University of Canberra, results showed that in-curricula information literacy skills training had a greater impact on students' satisfaction with access to high demand material than the purchase of additional copies of books. This paper will discuss…

Progress on the MICE Liquid Absorber Cooling and Cryogenic Distribution System

International Nuclear Information System (INIS)

Green, M.A.; Baynham, E.; Bradshaw, T.; Drumm, P.; Ivanyushenkov, Y.; Ishimoto, S.; Cummings, M.A.C.; Lau, W.W.; Yang, S.Q.

2005-01-01

This report describes the progress made on the design of the cryogenic cooling system for the liquid absorber for the international Muon Ionization Cooling Experiment (MICE). The absorber consists of a 20.7-liter vessel that contains liquid hydrogen (1.48 kg at 20.3 K) or liquid helium (2.59 kg at 4.2 K). The liquid cryogen vessel is located within the warm bore of the focusing magnet for the MICE. The purpose of the magnet is to provide a low beam beta region within the absorber. For safety reasons, the vacuum vessel for the hydrogen absorber is separated from the vacuum vessel for the superconducting magnet and the vacuum that surrounds the RF cavities or the detector. The absorber thin windows separate the liquid in the absorber from the absorber vacuum. The absorber vacuum vessel also has thin windows that separate the absorber vacuum space from adjacent vacuum spaces. Because the muon beam in MICE is of low intensity, there is no beam heating in the absorber. The absorber can use a single 4 K cooler to cool either liquid helium or liquid hydrogen within the absorber

Preparation and characterization of water-absorbing composite ...

African Journals Online (AJOL)

The present work introduces a novel method for the formation of water absorbing composite membrane. The prepared composite is based on chitosan, carboxymethyl cellulose (CMC), and Montmorillonite. Prepared composite membrane exhibits high water absorbing and holding capacity with increasing clay content.

Investigating the feasibility and acceptability of health psychology-informed obesity training for medical students.

Science.gov (United States)

Chisholm, Anna; Hart, Jo; Mann, Karen; Perry, Mark; Duthie, Harriet; Rezvani, Leila; Peters, Sarah

2016-01-01

Health psychologists have succeeded in identifying theory-congruent behaviour change techniques (BCTs) to prevent and reduce lifestyle-related illnesses, such as cardiovascular disease, cancers and diabetes. Obesity management discussions between doctors and patients can be challenging and are often avoided. Despite a clear training need, it is unknown how best to tailor BCT research findings to inform obesity-management training for future healthcare professionals. The primary objective of this descriptive study was to gather information on the feasibility and acceptability of delivering and evaluating health psychology-informed obesity training to UK medical students. Medical students (n = 41) attended an obesity management session delivered by GP tutors. Sessions were audio-recorded to enable fidelity checks. Acceptability of training was explored qualitatively. Tutors consistently delivered training according to the intervention protocol; and students and tutors found the training highly acceptable. This psychology-informed training can be delivered successfully by GP tutors and further research is warranted to explore its efficacy.

IMPACT OF INFORMATION SERVICES USING MEDIA FILM TO STUDENT MOTIVATION LEARNING AT SMA NEGERI 1 RAMAN UTARA, LAMPUNG TIMUR

Directory of Open Access Journals (Sweden)

Septazema Suciana

2014-09-01

Full Text Available Abstract: One of the factors that can influence student learning is the motivation to learn. Students' motivation can be built with an understanding to students about the importance of learning how to learn effectively, and how to overcome learning problems. Departing from this, the research problem is formulated as follows: Is there any influence of information services on the students motivation ?. The aim of research to determine the effect of information services on the students motivation. The study design was one group pretest-posttest design. Subjects numbered 20 students. To determine the study subjects used the technique Proportionate Stratified Random Sampling.Hasil hypothesis test showed the value of t = 8.75> 1.729. The conclusion of the study is an information service that executed can affect motivation. Therefore, it is advisable to guidance and counseling teachers use information services by using the medium of film, so that the services effectively organized and able to enhance students' motivation. Keyword: Information Services, Motivation

Frequency-dependent absorbance of broadband terahertz wave in dense plasma sheet

Science.gov (United States)

Peng, Yan; Qi, Binbin; Jiang, Xiankai; Zhu, Zhi; Zhao, Hongwei; Zhu, Yiming

2018-05-01

Due to the ability of accurate fingerprinting and low-ionization for different substances, terahertz (THz) technology has a lot of crucial applications in material analysis, information transfer, and safety inspection, etc. However, the spectral characteristic of atmospheric gas and ionized gas has not been widely investigated, which is important for the remote sensing application. Here, in this paper, we investigate the absorbance of broadband terahertz wave in dense plasma sheet generated by femtosecond laser pulses. It was found that as the terahertz wave transmits through the plasma sheet formed, respectively, in carbon dioxide, oxygen, argon and nitrogen, spectrum presents completely different and frequency-dependent absorbance. The reasons for these absorption peaks are related to the molecular polarity, electric charge, intermolecular and intramolecular interactions, and collisional absorption of gas molecules. These results have significant implications for the remote sensing of gas medium.

Effects of Multimedia Information Technology Integrated Multi-Sensory Instruction on Students' Learning Motivation and Outcome

Science.gov (United States)

Wu, Tung-Ju; Tai, Yu-Nan

2016-01-01

Under the waves of the Internet and the trend of era, information technology is a door connecting to the world to generate the multiplier effect of learning. Students' learning should not be regarded as the tool to cope with school examinations. The frequent contact with computers, networks, and relevant information allow students enjoying the…

Ni-Al Alloys as Alternative EUV Mask Absorber

Directory of Open Access Journals (Sweden)

Vu Luong

2018-03-01

Full Text Available Extreme ultraviolet (EUV lithography is being industrialized as the next candidate printing technique for high-volume manufacturing of scaled down integrated circuits. At mask level, the combination of EUV light at oblique incidence, absorber thickness, and non-uniform mirror reflectance through incidence angle, creates photomask-induced imaging aberrations, known as mask 3D (M3D effects. A possible mitigation for the M3D effects in the EUV binary intensity mask (BIM, is to use mask absorber materials with high extinction coefficient κ and refractive coefficient n close to unity. We propose nickel aluminide alloys as a candidate BIM absorber material, and characterize them versus a set of specifications that a novel EUV mask absorber must meet. The nickel aluminide samples have reduced crystallinity as compared to metallic nickel, and form a passivating surface oxide layer in neutral solutions. Composition and density profile are investigated to estimate the optical constants, which are then validated with EUV reflectometry. An oxidation-induced Al L2 absorption edge shift is observed, which significantly impacts the value of n at 13.5 nm wavelength and moves it closer to unity. The measured optical constants are incorporated in an accurate mask model for rigorous simulations. The M3D imaging impact of the nickel aluminide alloy mask absorbers, which predict significant M3D reduction in comparison to reference absorber materials. In this paper, we present an extensive experimental methodology flow to evaluate candidate mask absorber materials.

Students' Ethical Decision-Making in an Information Technology Context: A Theory of Planned Behavior Approach

Science.gov (United States)

Riemenschneider, Cynthia K.; Leonard, Lori N. K.; Manly, Tracy S.

2011-01-01

Business educators have increased the focus on ethics in the classroom. In order for students to become ethical professionals, they must first be held to an ethical standard as students. As information technology continues to permeate every aspect of students' lives, it becomes increasingly important to understand student decision-making in this…

Preparation and characterization of water-absorbing composite ...

African Journals Online (AJOL)

ABCO

2012-08-16

Aug 16, 2012 ... The present work introduces a novel method for the formation of water absorbing composite membrane. The prepared composite is based on chitosan, carboxymethyl cellulose (CMC), and. Montmorillonite. Prepared composite membrane exhibits high water absorbing and holding capacity with increasing ...

New Setting, Same Skill: Teaching Geography Students to Transfer Information Literacy Skills from Familiar to Unfamiliar Contexts

Science.gov (United States)

Allison, Caleb; Laxman, Kumar; Lai, Mei

2016-01-01

Existing research shows that high school students do not possess information literacy skills adequate to function in a high-tech society that relies so heavily on information. If students are taught these skills, they struggle to apply them. This small-scale intervention focused on helping Geography students at a low-socioeconomic high school in…

University Students' Knowledge Structures and Informal Reasoning on the Use of Genetically Modified Foods: Multidimensional Analyses

Science.gov (United States)

Wu, Ying-Tien

2013-10-01

This study aims to provide insights into the role of learners' knowledge structures about a socio-scientific issue (SSI) in their informal reasoning on the issue. A total of 42 non-science major university students' knowledge structures and informal reasoning were assessed with multidimensional analyses. With both qualitative and quantitative analyses, this study revealed that those students with more extended and better-organized knowledge structures, as well as those who more frequently used higher-order information processing modes, were more oriented towards achieving a higher-level informal reasoning quality. The regression analyses further showed that the "richness" of the students' knowledge structures explained 25 % of the variation in their rebuttal construction, an important indicator of reasoning quality, indicating the significance of the role of students' sophisticated knowledge structure in SSI reasoning. Besides, this study also provides some initial evidence for the significant role of the "core" concept within one's knowledge structure in one's SSI reasoning. The findings in this study suggest that, in SSI-based instruction, science instructors should try to identify students' core concepts within their prior knowledge regarding the SSI, and then they should try to guide students to construct and structure relevant concepts or ideas regarding the SSI based on their core concepts. Thus, students could obtain extended and well-organized knowledge structures, which would then help them achieve better learning transfer in dealing with SSIs.

Methods for applying microchannels to separate methane using liquid absorbents, especially ionic liquid absorbents from a mixture comprising methane and nitrogen

Science.gov (United States)

Tonkovich, Anna Lee Y [Dublin, OH; Litt, Robert D [Westerville, OH; Dongming, Qiu [Dublin, OH; Silva, Laura J [Plain City, OH; Lamont, Micheal Jay [Plain City, OH; Fanelli, Maddalena [Plain City, OH; Simmons, Wayne W [Plain city, OH; Perry, Steven [Galloway, OH

2011-10-04

Methods of using microchannel separation systems including absorbents to improve thermal efficiency and reduce parasitic power loss. Energy is typically added to desorb methane and then energy or heat is removed to absorb methane using a working solution. The working solution or absorbent may comprise an ionic liquid, or other fluids that demonstrate a difference in affinity between methane and nitrogen in a solution.

Shock absorber system for nuclear reactor ice condenser compartment

International Nuclear Information System (INIS)

Meier, J.F.; Rudd, G.E.; Pradhan, A.V.; George, J.A.; Lippincott, H.W.; Sutherland, J.D.

1979-01-01

A shock absorber system was designed to absorb the energy imparted to doors in a nuclear reactor ice condenser compartment as they swing rapidly to an open position. Each shock absorber which is installed on a wall adjacent to each door is large and must absorb up to about 40,000 foot pounds of energy. The basic shock absorber component comprises foam enclosed in a synthetic fabric bag having a volume about twice the foam volume. A stainless steel knitted mesh bag of the same volume as the fabric bag, contains the fabric bag and its enclosed foam. To protect the foam and bags during construction activities at the reactor site and from the shearing action of the doors, a protective sheet metal cover is installed over the shock absorber ends and the surface to be contacted by the moving door. With the above shock absorber mounted on a wall behind each door, as the door is forcibly opened by steam pressure and air resulting from a pipe break in the reactor compartment, it swings at a high velocity into contact with the shock absorber, crushes the foam and forces it into the fabric bag excess material thus containing the foam fragmented particles, and minimizes build-up of pressure in the bag as a result of the applied compressive force

Pool fire upon a balsa-filled shock absorber

International Nuclear Information System (INIS)

Fry, C.J.

1990-07-01

When performing a safety assessment of a transport flask with balsa-filled shock absorbers it is important to know how the shock absorbers, which may have the outer skin punctured by an impact, will perform in a fire. A 30 minute pool test, which satisfied all the requirements of a thermal test under the IAEA regulations, was carried out upon a small, balsa-filled shock absorber. The outer steel shell was partly cut away exposing the wood to the fire and the air. The balsa wood prevented 90% of the heat from the fire from being transferred through the shock absorber, even though the balsa was only 133 mm thick. The maximum heat flux through to the inside of the shock absorber due to the burning of the balsa wood was relatively low, 2.8 kW/m 2 , and occurred 2 to 3 hours after the end of the pool fire. (author)

An Examination of the Processes of Student Science Identity Negotiation within an Informal Learning Community

Science.gov (United States)

Mark, Sheron L.

Scientific proficiency is important, not only for a solid, interdisciplinary educational foundation, but also for entry into and mobility within today's increasingly technological and globalized workplace, as well as for informed, democratic participation in society (National Academies Press, 2007b). Within the United States, low-income, ethnic minority students are disproportionately underperforming and underrepresented in science, as well as mathematics, engineering and other technology fields (Business-Higher Education Forum, 2011; National Assessment of Educational Progress, 2009). This is due, in part, to a lack of educational structures and strategies that can support low-income, ethnic minority students to become competent in science in equitable and empowering ways. In order to investigate such structures and strategies that may be beneficial for these students, a longitudinal, qualitative study was conducted. The 15 month study was an investigation of science identity negotiation informed by the theoretical perspectives of Brown's (2004) discursive science identities and Tan and Barton's (2008) identities-in-practice amongst ten high school students in an informal science program and employed an amalgam of research designs, including ethnography (Geertz, 1973), case study (Stake, 2000) and grounded theory (Glaser & Strauss, 1967). Findings indicated that the students made use of two strategies, discursive identity development and language use in science, in order to negotiate student science identities in satisfying ways within the limits of the TESJ practice. Additionally, 3 factors were identified as being supportive of successful student science identity negotiation in the informal practice, as well. These were (i) peer dynamics, (ii) significant social interactions, and (iii) student ownership in science. The students were also uncovered to be particularly open-minded to the field of STEM. Finally, with respect to STEM career development, specific

A multicenter randomized controlled trial comparing absorbable barbed sutures versus conventional absorbable sutures for dermal closure in open surgical procedures.

Science.gov (United States)

Rubin, J Peter; Hunstad, Joseph P; Polynice, Alain; Gusenoff, Jeffrey A; Schoeller, Thomas; Dunn, Raymond; Walgenbach, Klaus J; Hansen, Juliana E

2014-02-01

Barbed sutures were developed to reduce operative time and improve security of wound closure. The authors compare absorbable barbed sutures (V-Loc, Covidien, Mansfield, Massachusetts) with conventional (smooth) absorbable sutures for soft tissue approximation. A prospective multicenter randomized study comparing barbed sutures with smooth sutures was undertaken between August 13, 2009, and January 31, 2010, in 241 patients undergoing abdominoplasty, mastopexy, and reduction mammaplasty. Each patient received barbed sutures on 1 side of the body, with deep dermal sutures eliminated or reduced. Smooth sutures with deep dermal and subcuticular closure were used on the other side as a control. The primary endpoint was dermal closure time. Safety was assessed through adverse event reporting through a 12-week follow-up. A total of 229 patients were ultimately treated (115 with slow-absorbing polymer and 114 with rapid-absorbing polymer). Mean dermal closure time was significantly quicker with the barbed suture compared with the smooth suture (12.0 vs 19.2 minutes; P<.001), primarily due to the need for fewer deep dermal sutures. The rapid-absorbing barbed suture showed a complication profile equivalent to the smooth suture, while the slow-absorbing barbed suture had a higher incidence of minor suture extrusion. Barbed sutures enabled faster dermal closure quicker than smooth sutures, with a comparable complication profile. 1.

Identifying the perfect absorption of metamaterial absorbers

Science.gov (United States)

Duan, G.; Schalch, J.; Zhao, X.; Zhang, J.; Averitt, R. D.; Zhang, X.

2018-01-01

We present a detailed analysis of the conditions that result in unity absorption in metamaterial absorbers to guide the design and optimization of this important class of functional electromagnetic composites. Multilayer absorbers consisting of a metamaterial layer, dielectric spacer, and ground plane are specifically considered. Using interference theory, the dielectric spacer thickness and resonant frequency for unity absorption can be numerically determined from the functional dependence of the relative phase shift of the total reflection. Further, using transmission line theory in combination with interference theory we obtain analytical expressions for the unity absorption resonance frequency and corresponding spacer layer thickness in terms of the bare resonant frequency of the metamaterial layer and metallic and dielectric losses within the absorber structure. These simple expressions reveal a redshift of the unity absorption frequency with increasing loss that, in turn, necessitates an increase in the thickness of the dielectric spacer. The results of our analysis are experimentally confirmed by performing reflection-based terahertz time-domain spectroscopy on fabricated absorber structures covering a range of dielectric spacer thicknesses with careful control of the loss accomplished through water absorption in a semiporous polyimide dielectric spacer. Our findings can be widely applied to guide the design and optimization of the metamaterial absorbers and sensors.

A wideband absorber for television studios

Science.gov (United States)

Baird, M. D. M.

The acoustic treatment in BBC television has taken various forms to date, all of which have been relatively expensive, some of which provide inadequate absorption. An investigation has been conducted into the possibilities of producing a new type of wideband absorber which would be more economic, also taking installation time into account, than earlier designs. This Report describes the absorption coefficient measurements made on various combinations of materials, from which a wideband sound absorber has been developed. The absorber works efficiently between 50 Hz and 10 kHz, is simple and easy to construct using readily available materials, and is fire resistant. The design lends itself, if necessary, to on-site fine tuning, and savings in the region of 50 percent can be achieved in terms of cost and space with respect to previous designs.

Need for Cognition and Active Information Search in Small Student Groups

Science.gov (United States)

Curseu, Petru Lucian

2011-01-01

In a sample of 213 students organized in 44 groups this study tests the impact of need for cognition on active information search by using a multilevel analysis. The results show that group members with high need for cognition seek more advice in task related issues than those with low need for cognition and this pattern of information exchange is…

Absorbed dose in CT. Comparison by CT dose index

International Nuclear Information System (INIS)

Yamamoto, Kenji; Akazawa, Hiroshi; Andou, Takashi

2002-01-01

Few reports have discussed the absorbed dose on CT units with increased scanning capacity even with the current widespread adoption of multi-slice CT units. To compare and investigate the dose indexes among CT units, we measured the absorbed dose on CT units operating in Nagano Prefecture Japan. The measurements showed proportionality between phantom absorbed dose and the exposured mAs values in conventional scanning operation. Further, the measurements showed that the absorbed dose in the center of the phantom differed by about 2.1-fold between the highest and lowest levels on individual CT units. Within a single company, multi-slice CT units of the same company gave absorbed doses of about 1.3 to 1.5 times those of conventional single-slice CT units under the same exposured conditions of conventional scanning. When the scanning pitch was reduced in helical scanning, the absorbed dose at the center of the phantom increased. (author)

Factors affecting the actions and emotional reactions of nursing teachers following encounters with students who present them with Internet information.

Science.gov (United States)

Itzhaki, Michal; Bluvstein, Irit; Raz, Shai; Barnoy, Sivia

2013-08-01

The Internet is a preferred source of information for nursing students. The purpose of the research was to identify teachers' reactions towards students who present them with information retrieved from the Internet. A total of 137 nursing teachers from 15 nursing schools in Israel were surveyed by a questionnaire. The dependent variable was nursing teachers' actions following encounters with students who present them with information from the Internet. Independent variables were: teacher's emotional reactions, teachers' Internet efficacy, Internet anxiety, and perceived student Internet efficacy. The intensity of positive emotional reactions was the only predictor of teachers' actions towards Internet information retrieved by students. When teachers perceived students as having higher Internet efficacy, their emotional reactions were more positive and they took more actions. Teachers' Internet anxiety was negatively correlated with their positive emotional reactions and actions. No correlation was found between nursing teachers' Internet self efficacy and their reactions or actions following an encounter with students presenting Internet information. Positive emotional reactions mediated correlations between teachers' Internet anxiety, perceived student Internet efficacy, and teachers' actions. Nursing teachers' positive emotions foster openness and acceptance of Internet information retrieved by students. Copyright © 2012 Elsevier Ltd. All rights reserved.

Enhancing mental activity and cognitive independence through information and communication technologies in students pharmacist cosmetologist

Directory of Open Access Journals (Sweden)

B. S. Burlaka

2014-08-01

Full Text Available The aim of research is to summarize the techniques used at the Department of Drug Technologyof Zaporozhye State Medical University to enhance mental performance and cognitive independence of pharmacists-cosmetologistsstudent. Results and discussion.In order to present summary information on the characteristics of cause-effect relationships for students we use lecture as method of teaching. Duration of lectures is two academic hours. Students focus on the presentation of all the sections of thematic plan. Integrated information environment in the form of multimedia content promotes effective learning of complex material. Analysis and synthesis of information obtained in lectures is held in the practice. Practical solution on making one or another cosmetic form consists of several stages. So initially, students analyze the task, offering the use of auxiliary substances and rational technology manufacturing. Then collectively with the teacher discuss the proposed solution of the problem. We found that at the stage of finding an effective choice of ingredients and manufacturing techniques learning level of the studentsgrows. For efficient memorization of cosmetic manufacturing process it is efficiently to apply a lecture discussionas a method of teaching. A group of students was divided into subgroups, each of which expresses a reasoned point of view on the proposed manufacturing technology. Each subgroup is appropriate to include informal leaders who contribute to competition between subgroups and discussion the manufacturing techniques. It is especially efficiently to create educational discussion on the use of Internet technologies. The role of the teacher in this technique is effective in moderating the debate. Modern communication services and communication in the form of electronic mail systems, online forums, document management systems, and multimedia services offer unlimited opportunities to exchange any information. At the present stage

TOMS Absorbing Aerosol Index

Data.gov (United States)

Washington University St Louis — TOMS_AI_G is an aerosol related dataset derived from the Total Ozone Monitoring Satellite (TOMS) Sensor. The TOMS aerosol index arises from absorbing aerosols such...

Reducing uncertainties associated with filter-based optical measurements of light absorbing carbon particles with chemical information

Science.gov (United States)

Engström, J. E.; Leck, C.

2011-08-01

The presented filter-based optical method for determination of soot (light absorbing carbon or Black Carbon, BC) can be implemented in the field under primitive conditions and at low cost. This enables researchers with small economical means to perform monitoring at remote locations, especially in the Asia where it is much needed. One concern when applying filter-based optical measurements of BC is that they suffer from systematic errors due to the light scattering of non-absorbing particles co-deposited on the filter, such as inorganic salts and mineral dust. In addition to an optical correction of the non-absorbing material this study provides a protocol for correction of light scattering based on the chemical quantification of the material, which is a novelty. A newly designed photometer was implemented to measure light transmission on particle accumulating filters, which includes an additional sensor recording backscattered light. The choice of polycarbonate membrane filters avoided high chemical blank values and reduced errors associated with length of the light path through the filter. Two protocols for corrections were applied to aerosol samples collected at the Maldives Climate Observatory Hanimaadhoo during episodes with either continentally influenced air from the Indian/Arabian subcontinents (winter season) or pristine air from the Southern Indian Ocean (summer monsoon). The two ways of correction (optical and chemical) lowered the particle light absorption of BC by 63 to 61 %, respectively, for data from the Arabian Sea sourced group, resulting in median BC absorption coefficients of 4.2 and 3.5 Mm-1. Corresponding values for the South Indian Ocean data were 69 and 97 % (0.38 and 0.02 Mm-1). A comparison with other studies in the area indicated an overestimation of their BC levels, by up to two orders of magnitude. This raises the necessity for chemical correction protocols on optical filter-based determinations of BC, before even the sign on the

Reducing uncertainties associated with filter-based optical measurements of light absorbing carbon particles with chemical information

Directory of Open Access Journals (Sweden)

J. E. Engström

2011-08-01

Full Text Available The presented filter-based optical method for determination of soot (light absorbing carbon or Black Carbon, BC can be implemented in the field under primitive conditions and at low cost. This enables researchers with small economical means to perform monitoring at remote locations, especially in the Asia where it is much needed.

One concern when applying filter-based optical measurements of BC is that they suffer from systematic errors due to the light scattering of non-absorbing particles co-deposited on the filter, such as inorganic salts and mineral dust. In addition to an optical correction of the non-absorbing material this study provides a protocol for correction of light scattering based on the chemical quantification of the material, which is a novelty. A newly designed photometer was implemented to measure light transmission on particle accumulating filters, which includes an additional sensor recording backscattered light. The choice of polycarbonate membrane filters avoided high chemical blank values and reduced errors associated with length of the light path through the filter.

Two protocols for corrections were applied to aerosol samples collected at the Maldives Climate Observatory Hanimaadhoo during episodes with either continentally influenced air from the Indian/Arabian subcontinents (winter season or pristine air from the Southern Indian Ocean (summer monsoon. The two ways of correction (optical and chemical lowered the particle light absorption of BC by 63 to 61 %, respectively, for data from the Arabian Sea sourced group, resulting in median BC absorption coefficients of 4.2 and 3.5 Mm⁻¹. Corresponding values for the South Indian Ocean data were 69 and 97 % (0.38 and 0.02 Mm⁻¹. A comparison with other studies in the area indicated an overestimation of their BC levels, by up to two orders of magnitude. This raises the necessity for chemical correction protocols on optical filter

Understanding students' and clinicians' experiences of informal interprofessional workplace learning: an Australian qualitative study.

Science.gov (United States)

Rees, Charlotte E; Crampton, Paul; Kent, Fiona; Brown, Ted; Hood, Kerry; Leech, Michelle; Newton, Jennifer; Storr, Michael; Williams, Brett

2018-04-17

While postgraduate studies have begun to shed light on informal interprofessional workplace learning, studies with preregistration learners have typically focused on formal and structured work-based learning. The current study investigated preregistration students' informal interprofessional workplace learning by exploring students' and clinicians' experiences of interprofessional student-clinician (IPSC) interactions. A qualitative interview study using narrative techniques was conducted. Student placements across multiple clinical sites in Victoria, Australia. Through maximum variation sampling, 61 participants (38 students and 23 clinicians) were recruited from six professions (medicine, midwifery, nursing, occupational therapy, paramedicine and physiotherapy). We conducted 12 group and 10 individual semistructured interviews. Themes were identified through framework analysis, and the similarities and differences in subthemes by participant group were interrogated. Six themes relating to four research questions were identified: (1) conceptualisations of IPSC interactions; (2) context for interaction experiences; (3) the nature of interaction experiences; (4) factors contributing to positive or negative interactions; (5) positive or negative consequences of interactions and (6) suggested improvements for IPSC interactions. Seven noteworthy differences in subthemes between students and clinicians and across the professions were identified. Despite the results largely supporting previous postgraduate research, the findings illustrate greater breadth and depth of understandings, experiences and suggestions for preregistration education. Educators and students are encouraged to seek opportunities for informal interprofessional learning afforded by the workplace. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2018. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

21 CFR 880.6025 - Absorbent tipped applicator.

Science.gov (United States)

2010-04-01

... stick. The device is used to apply medications to, or to take specimens from, a patient. (b...) MEDICAL DEVICES GENERAL HOSPITAL AND PERSONAL USE DEVICES General Hospital and Personal Use Miscellaneous Devices § 880.6025 Absorbent tipped applicator. (a) Identification. An absorbent tipped applicator is a...

Wideband aural acoustic absorbance predicts conductive hearing loss in children.

Science.gov (United States)

Keefe, Douglas H; Sanford, Chris A; Ellison, John C; Fitzpatrick, Denis F; Gorga, Michael P

2012-12-01

This study tested the hypothesis that wideband aural absorbance predicts conductive hearing loss (CHL) in children medically classified as having otitis media with effusion. Absorbance was measured in the ear canal over frequencies from 0.25 to 8 kHz at ambient pressure or as a swept tympanogram. CHL was defined using criterion air-bone gaps of 20, 25, and 30 dB at octaves from 0.25 to 4 kHz. A likelihood-ratio predictor of CHL was constructed across frequency for ambient absorbance, and across frequency and pressure for absorbance tympanometry. Performance was evaluated at individual frequencies and for any frequency at which a CHL was present. Absorbance and conventional 0.226-kHz tympanograms were measured in children of age three to eight years with CHL and with normal hearing. Absorbance was smaller at frequencies above 0.7 kHz in the CHL group than the control group. Based on the area under the receiver operating characteristic curve, wideband absorbance in ambient and tympanometric tests were significantly better predictors of CHL than tympanometric width, the best 0.226-kHz predictor. Accuracies of ambient and tympanometric wideband absorbance did not differ. Absorbance accurately predicted CHL in children and was more accurate than conventional 0.226-kHz tympanometry.

Searching and selecting online information: analysis of the strategic actions of the university students

OpenAIRE

María José Hernández Serrano

2013-01-01

As complex and dynamic activity, the searching and selection of online information needs a strategic performance in order to achieve effective and meaningful results and processes. The aim of this paper is to analyze whether university students perceive a need to be strategic, for what actions, what times, and what are their predispositions towards the strategic actions in the Internet information searching and selection process. Results showed differences between students by course, thos...

Proposal concerning the absorbed dose conversion factor

Energy Technology Data Exchange (ETDEWEB)

Shiragai, A [National Inst. of Radiological Sciences, Chiba (Japan)

1978-03-01

New definitions of the absorbed dose conversion factors Csub(lambda) and Csub(E) are proposed. The absorbed dose in water is given by the product of absorbed dose conversion factor, exposure calibration factor, ionisation chamber reading, cap displacement correction factor and perturbation correction factor. At exposure calibration the material of the build-up cap must be the same as that of the chamber wall. An ionisation chamber of which the wall material is water-equivalent or air-equivalent may be used. In the latter case the wall must be thin. For these two cases absorbed dose conversion factors are introduced and it is recommended that either of the two sets should be adopted. Furthermore, if the chamber wall is neither water- nor air-equivalent, the factor by which these currently defined values should be multiplied is also given: again the wall must be thin. The ICRU definitions of Csub(lambda) and Csub(E) are inconsistent, as recently pointed out, while the definitions presented here are consistent.

Utilization of Information and Communication Technologies as a Predictor of Educational Stress on Secondary School Students

Science.gov (United States)

Eskicumali, Ahmet; Arslan, Serhat; Demirtas, Zeynep

2015-01-01

The purpose of this study is to examine the relationship between utilization of information and communication technologies and educational stress. Participants were 411 secondary school students. Educational Stress Scale and Utilization of Information and Communication Technologies Scale were used as measures. The relationships between students'…

CRIMINAL RESPONSIBILITY OF STUDENTS REGARDING USING MOBILE DEVICES AND VIOLATING THE PRINCIPLES OF INFORMATION SECURITY

Directory of Open Access Journals (Sweden)

Blaž Markelj

2014-01-01

Full Text Available The combination of information security and criminal law in the case of usage of smart mobile phones among the students is a very relevant and current topic. Namely, the number of smart mobile phones’ users is rising daily, including among the student population, due to the need for perpetual communication and constant access to information. However, the lack of knowledge about recommendations on information security and safe use of smart mobile phone together with their disregard could lead to criminal responsibility of the users of smart mobile phones, including students. The purpose of this paper is therefore to represent the potential consequences of criminal responsibility and how to avoid it. The knowledge on safe use of smart mobile phones, their software, but also threats and safety solutions is very low among students, as the survey shows. Due to the loss, conveyance or disclosure of protected data, criminal responsibility of a user could therefore be relevant. In certain cases the juvenile criminal justice system is partly still relevant due to the students’ age, whereas in every case the students' culpability should be assessed precisely. This assessment namely distinguishes the cases, when the student is a perpetrator of a criminal act from the cases, when the student is only a victim of a criminal act due to his improper use of smart mobile phones.

Absorbed Doses to Patients in Nuclear Medicine; Doskatalogen foer nukleaermedicin

Energy Technology Data Exchange (ETDEWEB)

Leide-Svegborn, Sigrid; Mattsson, Soeren; Nosslin, Bertil [Universitetssjukhuset MAS, Malmoe (Sweden). Avd. foer radiofysik; Johansson, Lennart [Norrlands Universitetssjukhus, Umeaa (Sweden). Avd. foer radiofysik

2004-09-01

The work with a Swedish catalogue of radiation absorbed doses to patients undergoing nuclear medicine investigations has continued. After the previous report in 1999, biokinetic data and dose estimates (mean absorbed dose to various organs and tissues and effective dose) have been produced for a number of substances: {sup 11}C- acetate, {sup 11}C- methionine, {sup 18}F-DOPA, whole antibody labelled with either {sup 99m}Tc, {sup 111}In, {sup 123}I or {sup 131}I, fragment of antibody, F(ab'){sub 2} labelled with either {sup 99m}Tc, {sup 111}In, {sup 123}I or {sup 131}I and fragment of antibody, Fab' labelled with either {sup 99m}Tc, {sup 111}In, {sup 123}I or {sup 131}I. The absorbed dose estimates for these substances have been made from published biokinetic information. For other substances of interest, e.g. {sup 14}C-urea (children age 3-6 years), {sup 14}C-glycocholic acid, {sup 14}C-xylose and {sup 14}C-triolein, sufficient literature data have not been available. Therefore, a large number of measurements on patients and volunteers have been carried out, in order to determine the biokinetics and dosimetry for these substances. Samples of breast milk from 50 mothers, who had been subject to nuclear medicine investigations, have been collected at various times after administration of the radiopharmaceutical to the mother. The activity concentration in the breast milk samples has been measured. The absorbed dose to various organs and tissues and the effective dose to the child who ingests the milk have been determined for 17 different radiopharmaceuticals. Based on these results revised recommendations for interruption of breast-feeding after nuclear medicine investigations are suggested.

An Examination of College Students' Receptiveness to Alcohol-Related Information and Advice

Science.gov (United States)

Leahy, Matthew M.; Jouriles, Ernest N.; Walters, Scott T.

2013-01-01

This project examined the reliability and validity of a newly developed measure of college students' receptiveness to alcohol related information and advice. Participants were 116 college students who reported having consumed alcohol at some point in their lifetime. Participants completed a measure of receptiveness to alcohol-related…

How health information affects college students' inclination toward variety-seeking tendency.

Science.gov (United States)

Chien-Huang, Lin; Hung-Chou, Lin

2010-12-01

College students often consume too much snacks (e.g. potato chips) and such high-fat snacks are found to be related to obesity. This paper seeks to explore the effect of health-related information on the relationship of mood states and variety seeking (VS) behavior among enjoyable snacks. Health warnings and nutritional labeling are used to examine the moderating effects on this relationship. Consistent with our hypotheses, the results indicate that the presence of health warnings attenuates the influence of mood states on VS, so that happy and sad students tend to converge to similar levels of VS. However, in the absence of health warnings, sad students tend to incorporate significantly more VS than happy students. Similarly, the presence of nutritional labeling attenuates the influence of mood states on VS, so that happy and sad students tend to converge to similar levels of VS. However, in the absence of nutritional labeling, sad students tend to incorporate significantly more VS than happy students. The results provide evidence that making health warnings and nutritional labeling more salient might be a good way to decrease students' VS tendency for high-fat snacks. © 2010 The Authors. Scandinavian Journal of Psychology © 2010 The Scandinavian Psychological Associations.

A Quantitative and Qualitative Inquiry into Future Teachers' Use of Information and Communications Technology to Develop Students' Information Literacy Skills

Science.gov (United States)

Simard, Stéphanie; Karsenti, Thierry

2016-01-01

This study aims to understand how preservice programs prepare future teachers to use ICT to develop students' information literacy skills. A survey was conducted from January 2014 through May 2014 with 413 future teachers in four French Canadian universities. In the spring of 2015, qualitative data were also collected from 48 students in their…

The MuCool/MICE LH2 Absorber Program

International Nuclear Information System (INIS)

Cummings, Mary Anne

2004-01-01

Hydrogen absorber R and D for the MuCool Collaboration is actively pushing ahead on two parallel and complementary fronts. The continuing LH2 engineering and technical developments by the MuCool group, conducted by ICAR institutions (NIU, IIT and UIUC), the University of Mississippi and Oxford University in cooperation with Fermilab, are summarized here, including plans for the first tests of an absorber prototype from Osaka University and KEK cooled by internal convection at the newly constructed FNAL MuCool Test Area (MTA). Designs for the high-power test of another absorber prototype (employing external heat exchange) are complete and the system will be installed by summer 2004. A convection-cooled absorber design is being developed for the approved MICE cooling demonstration at Rutherford Appleton Laboratory

[Study on absorbing volatile oil with mesoporous carbon].

Science.gov (United States)

Yan, Hong-mei; Jia, Xiao-bin; Zhang, Zhen-hai; Sun, E; Yang Nan

2014-11-01

Clove oil and turmeric oil were absorbed by mesoporous carbon. The absorption ratio of mesoporous carbon to volatile oil was optimized with the eugenol yield and curcumol yield as criteria Curing powder was characterized by scanning electron microscopy (SEM) and differential scanning calorietry (DSC). The effects of mesoporous carbon on dissolution in vitro and thermal stability of active components were studied. They reached high adsorption rate when the absorption ratio of mesoporous carbon to volatile oil was 1:1. When volatile oil was absorbed, dissolution rate of active components had a little improvement and their thermal stability improved after volatile oil was absorbed by the loss rate decreasing more than 50%. Absorbing herbal volatile oil with mesoporous carbon deserves further studying.

The absorbed dose to blood from blood-borne activity

International Nuclear Information System (INIS)

Hänscheid, H; Fernández, M; Lassmann, M

2015-01-01

The radiation absorbed dose to blood and organs from activity in the blood is relevant for nuclear medicine dosimetry and for research in biodosimetry. The present study provides coefficients for the average absorbed dose rates to the blood from blood-borne activity for radionuclides frequently used in targeted radiotherapy and in PET diagnostics. The results were deduced from published data for vessel radius-dependent dose rate coefficients and reasonable assumptions on the blood-volume distribution as a function of the vessel radius. Different parts of the circulatory system were analyzed separately. Vessel size information for heart chambers, aorta, vena cava, pulmonary artery, and capillaries was taken from published results of morphometric measurements. The remaining blood not contained in the mentioned vessels was assumed to reside in fractal-like vascular trees, the smallest branches of which are the arterioles or venules. The applied vessel size distribution is consistent with recommendations of the ICRP on the blood-volume distribution in the human. The resulting average absorbed dose rates to the blood per nuclear disintegration per milliliter (ml) of blood are (in 10 −11  Gy·s −1 ·Bq −1 ·ml) Y-90: 5.58, I-131: 2.49, Lu-177: 1.72, Sm-153: 2.97, Tc-99m: 0.366, C-11: 4.56, F-18: 3.61, Ga-68: 5.94, I-124: 2.55. Photon radiation contributes 1.1–1.2·10 −11  Gy·s −1 ·Bq −1 ·ml to the total dose rate for positron emitters but significantly less for the other nuclides. Blood self-absorption of the energy emitted by ß-particles in the whole blood ranges from 37% for Y-90 to 80% for Tc-99m. The correspondent values in vascular trees, which are important for the absorbed dose to organs, range from 30% for Y-90 to 82% for Tc-99m. (paper)

Personal Values, Social Capital, and Higher Education Student Career Decidedness: A New "Protean"-Informed Model

Science.gov (United States)

Fearon, Colm; Nachmias, Stefanos; McLaughlin, Heather; Jackson, Stephen

2018-01-01

This study investigates the role of personal values as motivational antecedents for understanding higher education (HE) student career decidedness among university business school (UBS) students. We propose a new "protean"-informed HE student career decidedness model for theorizing how both personal values and social capital mediators…

Diesel NO{sub x} reduction by plasma-regenerated absorbent beds

Science.gov (United States)

Wallman, P.H.; Vogtlin, G.E.

1998-02-10

Reduction of NO{sub x} from diesel engine exhaust by use of plasma-regenerated absorbent beds is described. This involves a process for the reduction of NO{sub x} and particulates from diesel engines by first absorbing NO{sub x} onto a solid absorbent bed that simultaneously acts as a physical trap for the particulate matter, and second regenerating said solid absorbent by pulsed plasma decomposition of absorbed NO{sub x} followed by air oxidation of trapped particulate matter. The absorbent bed may utilize all metal oxides, but the capacity and the kinetics of absorption and desorption vary between different materials, and thus the composition of the absorbent bed is preferably a material which enables the combination of NO{sub x} absorption capability with catalytic activity for oxidation of hydrocarbons. Thus, naturally occurring or synthetically prepared materials may be utilized, particularly those having NO{sub x} absorption properties up to temperatures around 400 C which is in the area of diesel engine exhaust temperatures. 1 fig.

Analysis of absorbing times of quantum walks

International Nuclear Information System (INIS)

Yamasaki, Tomohiro; Kobayashi, Hirotada; Imai, Hiroshi

2003-01-01

Quantum walks are expected to provide useful algorithmic tools for quantum computation. This paper introduces absorbing probability and time of quantum walks and gives both numerical simulation results and theoretical analyses on Hadamard walks on the line and symmetric walks on the hypercube from the viewpoint of absorbing probability and time

Trained student pharmacists’ telephonic collection of patient medication information: Evaluation of a structured interview tool

Science.gov (United States)

Margolis, Amanda R.; Martin, Beth A.; Mott, David A.

2016-01-01

Objective To determine the feasibility and fidelity of student pharmacists collecting patient medication list information using a structured interview tool and the accuracy of documenting the information. The medication lists were used by a community pharmacist to provide a targeted medication therapy management (MTM) intervention. Design Descriptive analysis of patient medication lists collected via telephone interviews. Participants 10 trained student pharmacists collected the medication lists. Intervention Trained student pharmacists conducted audio-recorded telephone interviews with 80 English-speaking community dwelling older adults using a structured interview tool to collect and document medication lists. Main outcome measures Feasibility was measured using the number of completed interviews, the time student pharmacists took to collect the information, and pharmacist feedback. Fidelity to the interview tool was measured by assessing student pharmacists’ adherence to asking all scripted questions and probes. Accuracy was measured by comparing the audio recorded interviews to the medication list information documented in an electronic medical record. Results On average it took student pharmacists 26.7 minutes to collect the medication lists. The community pharmacist said the medication lists were complete and that having the medication lists saved time and allowed him to focus on assessment, recommendations, and education during the targeted MTM session. Fidelity was high with an overall proportion of asked scripted probes of 83.75% (95%CI: 80.62–86.88%). Accuracy was also high for both prescription (95.1%, 95%CI: 94.3–95.8%) and non-prescription (90.5%, 95%CI: 89.4–91.4%) medications. Conclusion Trained student pharmacists were able to use an interview tool to collect and document medication lists with a high degree of fidelity and accuracy. This study suggests that student pharmacists or trained technicians may be able to collect patient medication

Trained student pharmacists' telephonic collection of patient medication information: Evaluation of a structured interview tool.

Science.gov (United States)

Margolis, Amanda R; Martin, Beth A; Mott, David A

2016-01-01

To determine the feasibility and fidelity of student pharmacists collecting patient medication list information using a structured interview tool and the accuracy of documenting the information. The medication lists were used by a community pharmacist to provide a targeted medication therapy management (MTM) intervention. Descriptive analysis of patient medication lists collected with telephone interviews. Ten trained student pharmacists collected the medication lists. Trained student pharmacists conducted audio-recorded telephone interviews with 80 English-speaking, community-dwelling older adults using a structured interview tool to collect and document medication lists. Feasibility was measured using the number of completed interviews, the time student pharmacists took to collect the information, and pharmacist feedback. Fidelity to the interview tool was measured by assessing student pharmacists' adherence to asking all scripted questions and probes. Accuracy was measured by comparing the audio-recorded interviews to the medication list information documented in an electronic medical record. On average, it took student pharmacists 26.7 minutes to collect the medication lists. The community pharmacist said the medication lists were complete and that having the medication lists saved time and allowed him to focus on assessment, recommendations, and education during the targeted MTM session. Fidelity was high, with an overall proportion of asked scripted probes of 83.75% (95% confidence interval [CI], 80.62-86.88%). Accuracy was also high for both prescription (95.1%; 95% CI, 94.3-95.8%) and nonprescription (90.5%; 95% CI, 89.4-91.4%) medications. Trained student pharmacists were able to use an interview tool to collect and document medication lists with a high degree of fidelity and accuracy. This study suggests that student pharmacists or trained technicians may be able to collect patient medication lists to facilitate MTM sessions in the community pharmacy

THA EVALUATION OF THE ATTITUDES OF INFORMATION SYSTEMS STUDENTS TO DATA AND COMMUNICTION TOOLS

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Nadire ÇAVUŞ

2007-12-01

Full Text Available The information society has offered opportunities for people to show their skills and to prove themselves. The technology isbeing used widely in all aspects of our everyday life, is expanding everyday, and becoming part of our life, and is also veryimportant in the future careers of Computer and Instructional Technology Education (CEIT students and ComputerInformation Systems (CIS students. Starting from this idea, this research has been carried out in order to find out thefrequency of usage of data communication tools by students of both Departments at the Near East University. In thisresearch, a total of 163 students participated with 84 from CEIT and 79 from CIS. The following data communication toolswere used in the research: web based e-mail, chat, forum, web and multimedia based messenger (Yahoo, Hotmail, Ceptemsn,Skpe etc, Short Message Service (SMS, Multimedia Messaging Service (MMS, and so forth. A literature search has beencarried out in the research and in addition to the information obtained from this; a survey was setup to find out about theusage of data communications tools by students. The results of the survey have been analyzed and discussed using the SPSS13.0 statistical package. In addition, we can say that it was found by the survey results that students not only follow the recentdevelopments in technology very closely, but they also purchase and use such equipment according to their budgets. It wasalso found that students were aware that their Departments had very close links with the recent technological developments.Based on the results of the survey, students were given advice for their future career prospects, and they were also givenadvice on how they can use the data communication tools more frequently in education.

A Study of the Information Seeking Behavior of Communication Graduate Students in Their Research Processes

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Shih-Chuan Chen

2011-12-01

Full Text Available Thesis is the research outcome that a graduate student spends most of his or her time and energies to achieve. Therefore, the research process of student’s thesis writing is an important topic to be investigated. The main purpose of this study is to explore graduate students’ information seeking behavior during the process of thesis writing. Ten graduate students in the field of communication were interviewed, and their information horizon maps as well as bibliographical references were analyzed also. Results showed that the library, as a formal channel, is the primary source for graduate students. The documents that they used most often were theses and dissertations, monographs, and journals. In addition to the formal channels, social network also played as a very important role in students’ research process. The networks even changed their information seeking behaviors in formal channels. Students reported several problems encountered in the research process, such as lacking of the background knowledge of the interdisciplinary, being unable to find out the core and relevant documents from the search results, etc. In conclusion, graduate students’ information seeking behavior changed at different stages in the research process. [Article content in Chinese

Absorber Materials for Transition-Edge Sensor X-ray Microcalorimeters

Science.gov (United States)

Brown, Ari-David; Bandler, Simon; Brekosky, Regis; Chervenak, James; Figueroa-Feliciano, Enectali; Finkbeiner, Fred; Sadleir, Jack; Iyomoto, Naoko; Kelley, Richard; Kilbourne, Caroline;

Absorbing Aerosols: Field and Laboratory Studies of Black Carbon and Dust

Science.gov (United States)

Aiken, A. C.; Flowers, B. A.; Dubey, M. K.

2011-12-01

Currently, absorbing aerosols are thought to be the most uncertain factor in atmospheric climate models (~0.4-1.2 W/m2), and the 2nd most important factor after CO2 in global warming (1.6 W/m2; Ramanathan and Carmichael, Nature Geoscience, 2008; Myhre, Science, 2009). While most well-recognized atmospheric aerosols, e.g., sulfate from power-plants, have a cooling effect on the atmosphere by scattering solar radiation, black carbon (BC or soot) absorbs sunlight strongly which results in a warming of the atmosphere. Dust particles are also present globally and can absorb radiation, contributing to a warmer and drier atmosphere. Direct on-line measurements of BC and hematite, an absorbing dust aerosol, can be made with the Single Particle Soot Photometer (SP2), which measures the mass of the particles by incandescence on an individual particle basis. Measurements from the SP2 are combined with absorption measurements from the three-wavelength photoacoustic soot spectrometer (PASS-3) at 405, 532, and 781 nm and the ultraviolet photoacoustic soot spectrometer (PASS-UV) at 375 nm to determine wavelength-dependent mass absorption coefficients (MACs). Laboratory aerosol samples include flame-generated soot, fullerene soot, Aquadag, hematite, and hematite-containing dusts. Measured BC MAC's compare well with published values, and hematite MAC's are an order of magnitude less than BC. Absorbing aerosols measured in the laboratory are compared with those from ambient aerosols measured during the Las Conchas fire and BEACHON-RoMBAS. The Las Conchas fire was a wildfire in the Jemez Mountains of New Mexico that burned over 100,000 acres during the Summer of 2011, and BEACHON-RoMBAS (Bio-hydro-atmosphere interactions of Energy, Aerosols, Carbon, H2O, Organics & Nitrogen - Rocky Mountain Biogenic Aerosol Study) is a field campaign focusing on biogenic aerosols at the Manitou Forest Observatory near Colorado Springs, CO in Summer 2011. Optical properties and size

In Their Own Words: Using First-Year Student Research Journals to Guide Information Literacy Instruction

Science.gov (United States)

Insua, Glenda M.; Lantz, Catherine; Armstrong, Annie

2018-01-01

This action research study explores first-year students' conceptions of the research process, with a focus on which aspects students find most challenging and how this information can guide stakeholders in developing curricular or service-based interventions. To gather student reflections on the research process, researchers assigned and collected…

Turning tables : by information students supervised by prof. Annette Klarenbeek

NARCIS (Netherlands)

Klarenbeek, Annette

2014-01-01

Description of a research project in which information students did an online environment analysis. The research is aiming at discovering the frames which consists around ICT and Governments, in particular about the NSA. Our goal is to get an insight in the functions of these frames in conversations

Creating Information Environment to Organize Self-Study Activity of SVE Students

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E I Sanina

2014-12-01

Full Text Available The article discusses the use of new information technologies in organizing independent work of the SVE (Secondary Vocational Education students in the framework of a unified educational environment with the use of cloud technologies.

Airborne and total gamma absorbed dose rates at Patiala - India

International Nuclear Information System (INIS)

Tesfaye, Tilahun; Sahota, H.S.; Singh, K.

1999-01-01

The external gamma absorbed dose rate due to gamma rays originating from gamma emitting aerosols in air, is compared with the total external gamma absorbed dose rate at the Physics Department of Punjabi University, Patiala. It has been found out that the contribution, to the total external gamma absorbed dose rate, of radionuclides on particulate matter suspended in air is about 20% of the overall gamma absorbed dose rate. (author)

Absorbed dose rate meter for β-ray

International Nuclear Information System (INIS)

Bingo, K.

1977-01-01

The absorbed dose of β-ray depends on the energy of β-rays and the epidermal thickness of tissue in interest. In order to measure the absorbed dose rate at the interested tissue directly, the ratio of counting rate to absorbed dose should be constant independent of β-ray energy. In this purpose, a thin plastic scintillator was used as a detector with a single channel analyzer. The pulse height distribution, obtained using the scintillator whose thickness is less than the range of β-rays, shows a peak at a particular pulse height depending on the thickness of scintillator used. This means an increase of the number of pulses at lower pulse height. The lower level of discrimination and window width of the single channel analyzer are chosen according to the epidermal thickness of the tissue. In the experiment, scintillators of 0.5, 1, 2, 3, 5 and 10 mm thick were tested. It was found that desirable pulse height distribution, to obtain a constant dose sensitivity, could be obtained using the 2 mm thick scintillator. The sensitivity of the absorbed dose rate meter is constant within +-15% for β-ray with maximum energy from 0.4 to 3.5 MeV, when the absorbed dose rate for skin (epidermal thickness 7mg/cm 2 ) is measured. In order to measure the dose rate for a hand (epithermal thickness 40mg/cm 2 ) the lower level of discrimination is changed to be higher and at the same time the window width is also changed. Combining these techniques, one can get an absorbed dose rate meter for the tissue dose of various thickness, which has the constant dose sensitivity within +-15% for β-rays with maximum energy from 0.4 to 3.5 MeV

The IPOO-model of creative learning and the students' information processing characteristics

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Katalin Mező

2015-03-01

Full Text Available The present study was designed to examine secondary school students' information processing characteristics during learning and their relationship with the students' academic averages, internal motivation for learning and cognitive abilities, such as intelligence and creativity. Although many studies have previously focused on this issue, we are now studying this topic from the perspective of the IPOO-model, which is a new theoretical approach to school learning (note: IPOO is an acronym of Input, Process, Output, Organizing. This study featured 815 participants (secondary school students who completed the following tests and questionnaires: Raven's Advanced Progressive Matrices (APM intelligence test, the "Unusual Uses" creativity test (UUT, the 2nd version of the Jupiterbolha-próba (Jupiter Flea test – JB2 to test the information processing method of learning, and the Learning Attitude Questionnaire (LAQ. In our analysis we took the gender, school grade and academic average of participants into account. According to our results, the quality of information-processing methods of learning is at a low level, and there are no significant strong correlational relationships among the tests and questionnaire results (except in the cases of fluency, originality, and flexibility. There were no significant differences between genders or classes. These findings are consistent with the findings of previous studies.

Information Seeking Behaviour of Senior High School Student on General Election: Case Study In Indonesia

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Margareta Aulia Rachman

2018-01-01

Full Text Available The development of information technology affects students in searching and finding information, particularly information regarding the General Election. The explosion of information on mass media about the elections resulted impact (both positive and negative to the potential voters. Nowadays, media plays role as a tool for political parties to lead public opinion to support their parties. Based on the data provided by General Election Commission (KPU in 2014, 20% of voters were identified as students (teens. This is a qualitative research with case study method which aims to gain insight about interpretation, understanding, perceptions and feelings of teenage voters’ behavior in searching and finding information about general election in Indonesia year 2014. The data were collected by conducting interview and observation. Informants in this study were students, aged 17-18 years, who studying in government senior high school in Depok. The results of this study indicates that informants using social media to keep update about general election. Besides, they also gain information from their parents and close friends. Unfortunatelly, they were not able to identify which information which are correct or not, so they rely on people around them to make sure whether they did right decision. Therefore, this study also suggest that KPU needs to develop promotion strategy that suitable for teens about general election.

A Wedge Absorber Experiment at MICE

Energy Technology Data Exchange (ETDEWEB)

Neuffer, David [Fermilab; Mohayai, Tanaz [IIT, Chicago; Rogers, Chris [Rutherford; Snopok, Pavel [IIT, Chicago; Summers, Don [Mississippi U.

2017-05-01

Emittance exchange mediated by wedge absorbers is required for longitudinal ionization cooling and for final transverse emittance minimization for a muon collider. A wedge absorber within the MICE beam line could serve as a demonstration of the type of emittance exchange needed for 6-D cooling, including the configurations needed for muon colliders, as well as configurations for low-energy muon sources. Parameters for this test are explored in simulation and possible experimental configurations with simulated results are presented.

Introducing Scientific Literature to Honors General Chemistry Students: Teaching Information Literacy and the Nature of Research to First-Year Chemistry Students

Science.gov (United States)

Ferrer-Vinent, Ignacio J.; Bruehl, Margaret; Pan, Denise; Jones, Galin L.

2015-01-01

This paper describes the methodology and implementation of a case study introducing the scientific literature and creative experiment design to honors general chemistry laboratory students. The purpose of this study is to determine whether first-year chemistry students can develop information literacy skills while they engage with the primary…

UV-absorbing compounds in subarctic herbarium bryophytes

Energy Technology Data Exchange (ETDEWEB)

Huttunen, S. [Botany Division, Department of Biology, P.O. Box 3000, FIN-90 014 University of Oulu (Finland)]. E-mail: satu.huttunen@oulu.fi; Lappalainen, N.M. [Botany Division, Department of Biology, P.O. Box 3000, FIN-90 014 University of Oulu (Finland); Turunen, J. [Botany Division, Department of Biology, P.O. Box 3000, FIN-90 014 University of Oulu (Finland)

2005-01-01

The UV-B-absorbing compounds of herbarium specimens of 10 subarctic bryophyte species collected during the years 1926-1996 and available at the Botanical Museum, University of Oulu, were studied. We studied whether herbarium specimens reflect changes in the past radiation climate through their methanol-extractable compounds. The order of gametophytes based on the average amount of total compounds (sum of A{sub 280-320nm}) per mass from the lowest to the highest was Polytrichum commune, Pleurozium schreberi, Hylocomium splendens, Sphagnum angustifolium, Dicranum scoparium, Funaria hygrometrica, Sphagnum fuscum, Sphagnum warnstorfii, Sphagnum capillifolium and Polytrichastrum alpinum, and the amount of UV-B-absorbing compounds per specific surface area correlated with the summertime daily global radiation and latitude. P. alpinum, F. hygrometrica and three Sphagnum species seem to be good indicators for further studies. The amount of UV-B-absorbing compounds revealed no significant trends from the 1920s till the 1990s, with the exception of S. capillifolium, which showed a significant decreasing trend. - UV-B-absorbing compounds in subarctic herbarium bryophytes indicate the radiation climate of the collecting site and time.

UV-absorbing compounds in subarctic herbarium bryophytes

International Nuclear Information System (INIS)

Huttunen, S.; Lappalainen, N.M.; Turunen, J.

2005-01-01

The UV-B-absorbing compounds of herbarium specimens of 10 subarctic bryophyte species collected during the years 1926-1996 and available at the Botanical Museum, University of Oulu, were studied. We studied whether herbarium specimens reflect changes in the past radiation climate through their methanol-extractable compounds. The order of gametophytes based on the average amount of total compounds (sum of A 280-320nm ) per mass from the lowest to the highest was Polytrichum commune, Pleurozium schreberi, Hylocomium splendens, Sphagnum angustifolium, Dicranum scoparium, Funaria hygrometrica, Sphagnum fuscum, Sphagnum warnstorfii, Sphagnum capillifolium and Polytrichastrum alpinum, and the amount of UV-B-absorbing compounds per specific surface area correlated with the summertime daily global radiation and latitude. P. alpinum, F. hygrometrica and three Sphagnum species seem to be good indicators for further studies. The amount of UV-B-absorbing compounds revealed no significant trends from the 1920s till the 1990s, with the exception of S. capillifolium, which showed a significant decreasing trend. - UV-B-absorbing compounds in subarctic herbarium bryophytes indicate the radiation climate of the collecting site and time

Generating Knowledge and Avoiding Plagiarism: Smart Information Use by High School Students

Science.gov (United States)

Williamson, Kirsty; McGregor, Joy

2011-01-01

The article reports phase 2 of a two-year study, dubbed the Smart Information Use project, the focus of which was appropriate seeking and use of information by students at various stages of their high school education, along with the avoidance of plagiarism. In four Australian high schools, teacher librarians and classroom teachers developed and…

The use of Information and Communication Technologies from the students of Elbasan University

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Bederiana Shyti

2011-01-01

Full Text Available This article analyses the use of information and communication technologies from the students of Elbasan University, which is one of the biggest and the most important universities in Albania. The data was collected through a questionnaire designed specifically for this study during two time periods: the first period was December 2004- June 2005 and the second one was during the year 2010. The analysis makes a comparison of the data for these two periods, which indicates that information and communication technologies are part of the students and their family’s life. While some of them, such as mobile phones, are already widely used from the students, others like the Internet are still far. Therefore, this paper suggests that it is necessary to develop several specific policies in order to improve the actual situation.