WorldWideScience

Sample records for high academic potential

  1. Identifying High Academic Potential in Australian Aboriginal Children Using Dynamic Testing

    Science.gov (United States)

    Chaffey, Graham W.; Bailey, Stan B.; Vine, Ken W.

    2015-01-01

    The primary purpose of this study was to determine the effectiveness of dynamic testing as a method for identifying high academic potential in Australian Aboriginal children. The 79 participating Aboriginal children were drawn from Years 3-5 in rural schools in northern New South Wales. The dynamic testing method used in this study involved a…

  2. The Effect of an Out-of-School Enrichment Program on the Academic Achievement of High-Potential Students from Low-Income Families

    Science.gov (United States)

    Hodges, Jaret; McIntosh, Jason; Gentry, Marcia

    2017-01-01

    High-potential students from low-income families are at an academic disadvantage compared with their more affluent peers. To address this issue, researchers have suggested novel approaches to mitigate gaps in student performance, including out-of-school enrichment programs. Longitudinal mixed effects modeling was used to analyze the growth of…

  3. Academic Advising and Potential Litigation.

    Science.gov (United States)

    Schubert, Arline F.; Schubert, George W.

    1983-01-01

    Issues in tort and contract law and recent experiences in litigation that influence the academic adviser's responsibility are outlined, including negligence, nondisclosure and misrepresentation, defamation, written and oral contracts, and the adviser as an agent of the institution. Specific areas of adviser vulnerability are noted. (MSE)

  4. Potential of Mobile Learning in Teaching of ESL Academic Writing

    Science.gov (United States)

    Zaki, Arlina Ahmad; Yunus, Melor Md

    2015-01-01

    The potentials of mobile learning in teaching academic writing skills for ESL students are explored in this paper. Although there have been studies on MALL to improve writing skills, academic writing was never really touched. Few aspects are covered like the changes in educational technology, defining MALL, identifying issues in academic writing…

  5. High academic achievement in psychotic students.

    Science.gov (United States)

    Defries, Z; Grothe, L

    1978-02-01

    The authors studied 21 schizophrenic and borderline college students who achieved B+ or higher grade averages and underwent psychotherapy while in college. High academic achievement was found to provide relief from feelings of worthlessness and ineffectuality resulting from poor relationships with parents, siblings, and peers. Psychotherapy and the permissive yet supportive college atmosphere reinforced the students' self-esteem.

  6. Assessing academic potential for university admission: The ...

    African Journals Online (AJOL)

    A Biographical Questionnaire (BQ) has been used in the Faculty of Humanities at the University of the Witwatersrand since the mid-80s, to identify potential to succeed at university among applicants who have not met the requirements for automatic admission. As the key instrument in a special admissions process, the

  7. Black males' self-perceptions of academic ability and gifted potential in advanced science classes

    Science.gov (United States)

    Rascoe, Barbara; Monroe Atwater, Mary

    2005-10-01

    The purpose of this research effort was to examine Black male students' self-perceptions of academic ability and gifted potential in science. The purposeful sample consisted of nine Black males between the ages of 14 and 18 years. Four categories of self-perceptions of academic ability and gifted potential emerged from the data. These included: (a) gifted high achievers; (b) gifted could do better high achievers; (c) gifted could do better situational nonachievers; and (d) gifted could do better underachievers. Science teachers' influences that referenced participants' academic achievement pointed to validation. Participants' perceptions regarding how science teachers' influenced their academic performance focused on science teachers' content knowledge. Power dynamics germane to Black male participants' value or worth that directed their efforts in science learning environments are discussed. Implications are posited for science teaching, science education programs, and future research. This research endeavor was based on two premises. The first premise is that Black males' self-perceptions of academic ability affect their science academic achievement. The second premise is that, given parental, peer, and community influences, science teachers have considerable influence on students' self-perceptions of academic ability. However, the focus of this research was not on parental influences, peer influences, or any potential influences that participants' communities may have on their academic achievement.

  8. Locus of Control, Academic Self-Concept, and Academic Dishonesty among High Ability College Students

    Science.gov (United States)

    Rinn, Anne N.; Boazman, Janette

    2014-01-01

    The purposes of the current study were to evaluate a measure of academic dishonesty and examine high ability college students' loci of control and its effect on behaviors of academic dishonesty, as moderated by academic self-concept. A total of 357 high ability college students enrolled at two universities in the southwestern United States took…

  9. Academic Identity Status, Goal Orientation, and Academic Achievement among High School Students

    Science.gov (United States)

    Hejazi, Elaheh; Lavasani, Masoud Gholamali; Amani, Habib; Was, Christopher A.

    2012-01-01

    The aim of the present study was to determine the relationship between academic identity status, goal orientations and academic achievement. 301 first year high school students completed the Academic Identity Measure and Goal Orientation Questionnaire. The average of 10 exam scores in the final semester was used as an index of academic…

  10. academic performance of less endowed high school students

    African Journals Online (AJOL)

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  11. Correlation among High School Senior Students' Test Anxiety, Academic Performance and Points of University Entrance Exam

    Science.gov (United States)

    Karatas, Hakan; Alci, Bulent; Aydin, Hasan

    2013-01-01

    Test anxiety seems like a benign problem to some people, but it can be potentially serious when it leads to high levels of distress and academic failure. The aim of this study is to define the correlation among high school senior students' test anxiety, academic performance (GPA) and points of university entrance exam (UEE). The study group of…

  12. Academic performance in high school as factor associated to academic performance in college

    Directory of Open Access Journals (Sweden)

    Mileidy Salcedo Barragán

    2008-12-01

    Full Text Available This study intends to find the relationship between academic performance in High School and College, focusing on Natural Sciences and Mathematics. It is a descriptive correlational study, and the variables were academic performance in High School, performance indicators and educational history. The correlations between variables were established with Spearman’s correlation coefficient. Results suggest that there is a positive relationship between academic performance in High School and Educational History, and a very weak relationship between performance in Science and Mathematics in High School and performance in College.

  13. Academic Self-Efficacy of High Achieving Students in Mexico

    Science.gov (United States)

    Camelo-Lavadores, Ana Karen; Sánchez-Escobedo, Pedro; Pinto-Sosa, Jesus

    2017-01-01

    The purpose of this study was to explore for differences in the academic self-efficacy of Mexican high school students. A gird questionnaire was administered to 1,460 students form private and public schools. As expected, high achieving students showed significantly higher academic self-efficacy that their peers. However, interesting gender…

  14. The effects of incubation on academic and non-academic high-tech start-ups: evidence from Italy

    OpenAIRE

    Colombo, Massimo G.; Piva, Evila; Rentocchini, Francesco

    2012-01-01

    This study aims at empirically investigating whether technology incubators help academic high-tech start-ups to establish collaborations with other organizations, thus increasing the competitiveness of these firms. In doing so, we take into account the specificities of academic high-tech start-ups with respect to their non-academic counterparts. We compare the effects of incubation on academic and non-academic high-tech start-ups through econometric estimates using a large sample of Italian f...

  15. On Functional Potential of Interrogative Structures in Academic Linguistic Discourse

    Directory of Open Access Journals (Sweden)

    Sergey Trofimovich Nefedov

    2015-11-01

    Full Text Available The paper deals with the language of scientific communication in the field of linguistics, namely, with the functional potential of the interrogative structures in the form of direct and embedded questions. From a pragmatic perspective the interrogative structures does not seem to be compatible with the contexts of scientific interaction: scientists do not ask for information, but they offer their own solutions for the problem situations. This is reflected in the extremely low frequency of questions in academic research articles and monographs. Their text frequency works out a little over 2 % of the total number of the text predications and that of direct questions is about 1 %. Therefore, their place in verbalization of scientific knowledge in linguistics is metaphorically characterized in this article as «interrogative prohibition» by analogy with the «prohibitions» of Harald Weinrich who introduced several notions point to rarely used linguistic units: «prohibition of authorization» – das «Ich-Verbot», «narrative prohibition» – das «Erzähl-Verbot»; «prohibition of metaphors»– das «MetaphernVerbot». In its turn, low frequency makes the analyzed structures an effective tool to formulate the discussed problems, enables further argumentation, integrate the current text into overall linguistic discourse, control the development of the argumentation in scientific text and finally to draw the recipient's attention to a crucial or unexpected argument.

  16. Family and academic performance: identifying high school student profiles

    Directory of Open Access Journals (Sweden)

    Alicia Aleli Chaparro Caso López

    2016-01-01

    Full Text Available The objective of this study was to identify profiles of high school students, based on variables related to academic performance, socioeconomic status, cultural capital and family organization. A total of 21,724 high school students, from the five municipalities of the state of Baja California, took part. A K-means cluster analysis was performed to identify the profiles. The analyses identified two clearly-defined clusters: Cluster 1 grouped together students with high academic performance and who achieved higher scores for socioeconomic status, cultural capital and family involvement, whereas Cluster 2 brought together students with low academic achievement, and who also obtained lower scores for socioeconomic status and cultural capital, and had less family involvement. It is concluded that the family variables analyzed form student profiles that can be related to academic achievement.

  17. Peace of Mind, Academic Motivation, and Academic Achievement in Filipino High School Students.

    Science.gov (United States)

    Datu, Jesus Alfonso D

    2017-04-09

    Recent literature has recognized the advantageous role of low-arousal positive affect such as feelings of peacefulness and internal harmony in collectivist cultures. However, limited research has explored the benefits of low-arousal affective states in the educational setting. The current study examined the link of peace of mind (PoM) to academic motivation (i.e., amotivation, controlled motivation, and autonomous motivation) and academic achievement among 525 Filipino high school students. Findings revealed that PoM was positively associated with academic achievement β = .16, p amotivation β = -.19, p < .05, and autonomous motivation was positively associated with academic achievement β = .52, p < .01. Furthermore, the results of bias-corrected bootstrap analyses at 95% confidence interval based on 5,000 bootstrapped resamples demonstrated that peace of mind had an indirect influence on academic achievement through the mediating effects of autonomous motivation. In terms of the effect sizes, the findings showed that PoM explained about 1% to 18% of the variance in academic achievement and motivation. The theoretical and practical implications of the results are elucidated.

  18. Prosocial behavior and academic motivation in Spanish High School Students

    OpenAIRE

    Inglés, Cándido J.; Universidad Miguel Hernández de Elche; Martínez-González, Agustin E.; Universidad Miguel Hernández de Elche; Valle, Antonio; Universidad de A Coruña; García-Fernández, José M.; Universidad de Alicante; Ruiz-Esteban, Cecilia; Universidad de Murcia

    2010-01-01

    This study analyzed the relationship between prosocial behaviour and academic goals in a sample of 2,022 Spanish compulsory secondary education students. The prosocial behaviour was measured with the Prosocial Behaviour scale of the Teenage Inventory of Social Skills (TISS) and academic goals were measured with the Achievement Goal Tendencies Questionnaire (AGTQ). The results revealed that students with high prosocial behaviour presented higher significantly scores in learning and performance...

  19. Catholic High Schools and Rural Academic Achievement.

    Science.gov (United States)

    Sander, William

    1997-01-01

    A study of national longitudinal data examined effects of rural Catholic high schools on mathematics achievement, high school graduation rates, and the likelihood that high school graduates attend college. Findings indicate that rural Catholic high schools had a positive effect on mathematics test scores and no effect on graduation rates or rates…

  20. Sources of Global Academic Self-Efficacy in Academically High-Achieving Females before the Onset of Disordered Eating

    Science.gov (United States)

    Krafchek, Jennifer; Kronborg, Leonie

    2015-01-01

    There is limited research applying the four sources of self-efficacy (Bandura, 1997) to global academic self-efficacy. This qualitative study examined the sources of global academic self-efficacy in a sample of academically high-achieving females who developed disordered eating. Semistructured interviews were conducted with 14 participants to gain…

  1. Teacher enthusiasm: a potential cure of academic cheating

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    Gábor eOrosz

    2015-03-01

    Full Text Available In this research we claim that teachers’ enthusiasm matters regarding student engagement in terms of academic cheating. Previous studies found that perceived enthusiasm of teachers is positively related to the intrinsic motivation of the students. However, it was less investigated how perceived enthusiasm is related to cheating. In the first exploratory questionnaire study (N = 244 we found that during the exams of those teachers who are perceived to be enthusiastic students tend to cheat less. In the second questionnaire study (N = 266 we took academic motivations into consideration and we found that the more teachers seem enthusiastic the cheating rate will be lower among university students. Aggregated teacher enthusiasm was positively related to intrinsic motivation, negatively related to amotivation, and not related to extrinsic motivation. Aggregated teacher enthusiasm was directly and negatively linked to cheating and it explained more variance in cheating than academic motivations together. These results suggest that teachers’ perceived enthusiasm can be a yet unexplored interpersonal factor which could effectively prevent academic cheating.

  2. Teacher enthusiasm: a potential cure of academic cheating

    Science.gov (United States)

    Orosz, Gábor; Tóth-Király, István; Bőthe, Beáta; Kusztor, Anikó; Kovács, Zsuzsanna Üllei; Jánvári, Miriam

    2015-01-01

    In this research we claim that teachers’ enthusiasm matters regarding student engagement in terms of academic cheating. Previous studies found that perceived enthusiasm of teachers is positively related to the intrinsic motivation of the students. However, it was less investigated how perceived enthusiasm is related to cheating. In the first exploratory questionnaire study (N = 244) we found that during the exams of those teachers who are perceived to be enthusiastic students tend to cheat less. In the second questionnaire study (N = 266) we took academic motivations into consideration and we found that the more teachers seem enthusiastic the cheating rate will be lower among university students. Aggregated teacher enthusiasm was positively related to intrinsic motivation, negatively related to amotivation, and not related to extrinsic motivation. Aggregated teacher enthusiasm was directly and negatively linked to cheating and it explained more variance in cheating than academic motivations together. These results suggest that teachers’ perceived enthusiasm can be a yet unexplored interpersonal factor which could effectively prevent academic cheating. PMID:25873903

  3. Maximising the potential of social media to deliver academic library ...

    African Journals Online (AJOL)

    The findings revealed that academic libraries in Kenya are currently using Facebook, WhatsApp, YouTube and Twitter to facilitate the sharing of information resources, provision of reference services, formation of professional networks, and promotion of library services. The findings also indicate that the use of social media ...

  4. Determinants of Students Academic Performance in Senior High ...

    African Journals Online (AJOL)

    A binary logit model is used to investigate the determinants of students' performance in the final high school examination. Questionnaires were administered to a sample of 1,129 final year students (614 boys and 515 girls) in ten senior high schools (SHSs) during the 2008/2009 academic year. Respondents were requested ...

  5. The Relation between Time Management Skills and Academic Achievement of Potential Teachers

    Science.gov (United States)

    Cemaloglu, Necati; Filiz, Sevil

    2010-01-01

    The aim of this study is to determine the relationship between the time management skills and academic achievement of students who are potential teachers studying in faculties of education. The research was conducted in the 2007-08 academic term among 849 graduate students in the Faculty of Education at Gazi University. The "Time Management…

  6. Yoga Improves Academic Performance in Urban High School Students Compared to Physical Education: A Randomized Controlled Trial

    Science.gov (United States)

    Hagins, Marshall; Rundle, Andrew

    2016-01-01

    Yoga programs within schools have become more widespread but research regarding the potential effect on academic achievement remains limited. This study cluster-randomized 112 students within a single New York City public high school to participate in either school-based yoga or physical education (PE) for an entire academic year. The primary…

  7. Academic achievement of junior high school students with sleep disorders

    Directory of Open Access Journals (Sweden)

    Fijri Auliyanti

    2015-03-01

    Full Text Available Background Sleep disorders are prevalent in adolescents and may influence their academic achievement. To date, no study has been done in Indonesia on academic achievement in students with sleep disorders and its related factors. Objective To assess for relationships between academic achievement and related factors, including gender, motivation and learning strategies, IQ level, maternal educational level, socioeconomic status, family structure, after-hours education program, presence of TV/computer in the bedroom, sleep duration during school days, as well as bedtime and wakeup time difference in junior high school students with sleep disorders. Methods This cross-sectional study was performed from January to March 2013. Subjects were students from five junior high schools in Jakarta who fulfilled the criteria for sleep disorders based on the Sleep Disturbance Scale for Children questionnaire. Results There were 111 study subjects. The prevalence of sleep disorders was 39.7%, mostly in difficulties initiating and maintaining sleep (70.2%. Below-average academic achievement was seen in 47.6% of subjects. Factors significantly related to below-average academic achievement were after-hours education program (prevalence ratio 5.6; 95%CI 1.36 to 23.18; P = 0.017, average IQ level (prevalence ratio 3.26; 95%CI 1.38 to 7.71; P = 0.007, and male gender (prevalence ratio 2.68; 95%CI 1.06 to 6.78; P = 0.037. Conclusion Among junior high school students with sleep disorders, factors related to below-average academic achievement are afterhours education program (more than 2 types, the average IQ level, and male gender.

  8. Academic Performance of Less Endowed High School Students in ...

    African Journals Online (AJOL)

    This paper investigates the academic performance of students from less endowed senior high schools in the Kwame Nkrumah University of Science and Technology (KNUST). Questionnaires were administered to 152 (123 males and 29 females) fourth year students who enrolled for various programmes at KNUST in 2007 ...

  9. The Academic Experience of Male High School Students with ADHD

    Science.gov (United States)

    Kent, Kristine M.; Pelham, William E.; Molina, Brooke S. G.; Sibley, Margaret H.; Waschbusch, Daniel A.; Yu, Jihnhee; Gnagy, Elizabeth M.; Biswas, Aparajita; Babinski, Dara E.; Karch, Kathryn M.

    2011-01-01

    This study compared the high school academic experience of adolescents with and without childhood ADHD using data from the Pittsburgh ADHD Longitudinal Study (PALS). Participants were 326 males with childhood ADHD and 213 demographically similar males without ADHD who were recruited at the start of the follow-up study. Data were collected yearly…

  10. Self-Esteem and Academic Achievement of High School Students

    Science.gov (United States)

    Moradi Sheykhjan, Tohid; Jabari, Kamran; Rajeswari, K.

    2014-01-01

    The primary purpose of this study was to determine the influence of self-esteem on academic achievement among high school students in Miandoab City of Iran. The methodology of the research is descriptive and correlation that descriptive and inferential statistics were used to analyze the data. Statistical Society includes male and female high…

  11. The Potential for Using Gamification in Academic Libraries in Order to Increase Student Engagement and Achievement

    Directory of Open Access Journals (Sweden)

    Andrew Walsh

    2014-06-01

    Full Text Available This paper discusses the potential benefits of using gamification techniques to increase student engagement with library resources. It outlines the link between student use of library resources and academic achievement, and suggests that gamification has to potential to increase usage of resources, which may also increase academic achievement. Some early findings from an implementation of a gamification project, Lemontree, are also discussed in which students reported increased usage of library resources and their acceptance of gamification techniques in Higher Education.

  12. [Quality of sleep and academic performance in high school students].

    Science.gov (United States)

    Bugueño, Maithe; Curihual, Carolina; Olivares, Paulina; Wallace, Josefa; López-AlegrÍa, Fanny; Rivera-López, Gonzalo; Oyanedel, Juan Carlos

    2017-09-01

    Sleeping and studying are the day-to-day activities of a teenager attending school. To determine the quality of sleep and its relationship to the academic performance among students attending morning and afternoon shifts in a public high school. Students of the first and second year of high school answered an interview about socio-demographic background, academic performance, student activities and subjective sleep quality; they were evaluated using the Pittsburgh Sleep Quality Index (PSQI). The interview was answered by 322 first year students aged 15 ± 5 years attending the morning shift and 364 second year students, aged 16 ± 0.5 years, attending the afternoon shift. The components: sleep latency, habitual sleep efficiency, sleep disturbance, drug use and daytime dysfunction were similar and classified as good in both school shifts. The components subjective sleep quality and duration of sleep had higher scores among students of the morning shift. The mean grades during the first semester of the students attending morning and afternoon shifts were 5.9 and 5.8, respectively (of a scale from 1 to 7). Among students of both shifts, the PSQI scale was associated inversely and significantly with academic performance. A bad sleep quality influences academic performance in these students.

  13. High Potentials: A CEO Perspective

    Science.gov (United States)

    Hermans, Jeanine

    2007-01-01

    Finding high potentials has been identified as one of the major challenges for society and for higher education. But how does one find the talented individuals who will design the future of society? Can and should universities cooperate or compete with business and industry for these talents? Three CEOs reflect on this worldwide competition for…

  14. High-temperature axion potential

    International Nuclear Information System (INIS)

    Dowrick, N.J.; McDougall, N.A.

    1989-01-01

    We investigate the possibility of new terms in the high-temperature axion potential arising from the dynamical nature of the axion field and from higher-order corrections to the θ dependence in the free energy of the quark-gluon plasma. We find that the dynamical nature of the axion field does not affect the potential but that the higher-order effects lead to new terms in the potential which are larger than the term previously considered. However, neither the magnitude nor the sign of the potential can be calculated by a perturbative expansion of the free energy since the coupling is too large. We show that a change in the magnitude of the potential does not significantly affect the bound on the axion decay constant but that the sign of the potential is of crucial importance. By investigating the formal properties of the functional integral within the instanton dilute-gas approximation, we find that the sign of the potential does not change and that the minimum remains at θ=0. We conclude that the standard calculation of the axion energy today is not significantly modified by this investigation

  15. Factors potentially influencing academic performance among medical students

    Directory of Open Access Journals (Sweden)

    Al Shawwa L

    2015-01-01

    Full Text Available Lana Al Shawwa,1 Ahmad A Abulaban,2 Abdulrhman A Abulaban,3 Anas Merdad,3 Sara Baghlaf,3 Ahmed Algethami,3 Joullanar Abu-shanab,3 Abdulrahman Balkhoyor3 1Department of Medical Education, College of Medicine, King Abdulaziz University, Jeddah, 2Department of Medicine-Neurology, King Fahad National Guard Hospital, King Abdulziz Medical City, Riyadh, 3Department of Medical Education, College of Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia Background: Studies are needed to examine predictors of success in medical school. The aim of this work is to explore factors that potentially influence excellence of medical students. Methods: The study was conducted in the Medical Faculty of King Abdulaziz University during October 2012. A self-administered questionnaire was used. Medical students with a grade point average (GPA ≥4.5 (out of 5 were included and compared to randomly selected medical students with a GPA <4.5, who were available at the time of the study. Results: A total of 359 undergraduate students participated in the study. 50.4% of the sample was students with a GPA ≥4.5. No statistically significant difference regarding the time spent on outings and social events was found. However, 60.7% of high GPA students spend less than 2 hours on social networking per day as compared to 42.6% of the lower GPA students (P<0.01. In addition, 79% of high GPA students prefer to study alone (P=0.02, 68.0% required silence and no interruptions during studying time (P=0.013, and 47% revise their material at least once before an exam (P=0.02. Conclusion: Excellent medical students have many different characteristics. For example, they do not use social networking for prolonged periods of time, and they have strong motivation and study enjoyment. Further studies are needed to examine whether these differences have a real impact on GPA or not. Keyword: King Abdulaziz University KAU, medical school, study habits, exam habits 

  16. The Academic Experience of Male High School Students with ADHD

    OpenAIRE

    Kent, Kristine M.; Pelham, William E.; Molina, Brooke S. G.; Sibley, Margaret H.; Waschbusch, Daniel A.; Yu, Jihnhee; Gnagy, Elizabeth M.; Biswas, Aparajita; Babinski, Dara E.; Karch, Kathryn M.

    2011-01-01

    This study compared the high school academic experience of adolescents with and without childhood ADHD using data from the Pittsburgh ADHD Longitudinal Study (PALS). Participants were 326 males with childhood ADHD and 213 demographically similar males without ADHD who were recruited at the start of the follow-up study. Data were collected yearly from parents, teachers and schools. The current study used assessment points at which the participants were currently in or had recently completed gr...

  17. Prosocial behavior and academic motivation in Spanish High School Students

    Directory of Open Access Journals (Sweden)

    Cándido J. Inglés

    2011-05-01

    Full Text Available This study analyzed the relationship between prosocial behaviour and academic goals in a sample of 2,022 Spanish compulsory secondary education students. The prosocial behaviour was measured with the Prosocial Behaviour scale of the Teenage Inventory of Social Skills (TISS and academic goals were measured with the Achievement Goal Tendencies Questionnaire (AGTQ. The results revealed that students with high prosocial behaviour presented higher significantly scores in learning and performance goals. The prosocial behaviour was a positive and statistically significant predictor of learning and performance goals. Furthermore, learning and performance goals were positive and statistically significant predictors of the prosocial behaviour, whereas social reinforcement goals were a negative and statisticallysignificant predictor of prosocial behaviour.

  18. Type of High School Predicts Academic Performance at University Better than Individual Differences.

    Science.gov (United States)

    Banai, Benjamin; Perin, Višnja

    2016-01-01

    Psychological correlates of academic performance have always been of high relevance to psychological research. The relation between psychometric intelligence and academic performance is one of the most consistent and well-established findings in psychology. It is hypothesized that intelligence puts a limit on what an individual can learn or achieve. Moreover, a growing body of literature indicates a relationship between personality traits and academic performance. This relationship helps us to better understand how an individual will learn or achieve their goals. The aim of this study is to further investigate the relationship between psychological correlates of academic performance by exploring the potentially moderating role of prior education. The participants in this study differed in the type of high school they attended. They went either to gymnasium, a general education type of high school that prepares students specifically for university studies, or to vocational school, which prepares students both for the labour market and for further studies. In this study, we used archival data of psychological testing during career guidance in the final year of high school, and information about the university graduation of those who received guidance. The psychological measures included intelligence, personality and general knowledge. The results show that gymnasium students had greater chances of performing well at university, and that this relationship exceeds the contribution of intelligence and personality traits to university graduation. Moreover, psychological measures did not interact with type of high school, which indicates that students from different school types do not profit from certain individual characteristics.

  19. Academic Achievement and Risk Factors for Adolescents with Attention-Deficit Hyperactivity Disorder in Middle School and Early High School.

    Science.gov (United States)

    Zendarski, Nardia; Sciberras, Emma; Mensah, Fiona; Hiscock, Harriet

    Examine academic achievement of students with attention-deficit hyperactivity disorder (ADHD) during the early high school period and identify potentially modifiable risk factors for low achievement. Data were collected through surveys (adolescent, parent, and teacher) and direct assessment of Australian adolescents (12-15 yr; n = 130) with ADHD in early high school (i.e., US middle and high school grades). Academic achievement outcomes were measured by linking to individual performance on the National Assessment Program-Literacy and Numeracy (NAPLAN) tests, direct assessment of reading and math, and teacher report of academic competence. Linear regression models examined associations between adolescent, parent/family, and school factors and NAPLAN domain scores. Students with ADHD had lower NAPLAN scores on all domains and fewer met minimum academic standards in comparison with state benchmarks. The poorest results were for persuasive writing. Poor achievement was associated with lower intelligence quotient across all academic domains. Adolescent inattention, bullying, poor family management, male sex, and attending a low socioeconomic status school were associated with lower achievement on specific domains. Students with ADHD are at increased academic risk during the middle school and early high school period. In addition to academic support, interventions targeting modifiable factors including inattention, bullying, and poor family management may improve academic achievement across this critical period.

  20. The European Research Elite: A Cross-National Study of Highly Productive Academics in 11 Countries

    Science.gov (United States)

    Kwiek, Marek

    2016-01-01

    In this paper, we focus on a rare scholarly theme of highly productive academics, statistically confirming their pivotal role in knowledge production across 11 systems studied. The upper 10% of highly productive academics in 11 European countries studied (N = 17,211) provide on average almost half of all academic knowledge production. In contrast…

  1. Academically Buoyant Students Are Less Anxious about and Perform Better in High-Stakes Examinations

    Science.gov (United States)

    Putwain, David W.; Daly, Anthony L.; Chamberlain, Suzanne; Sadreddini, Shireen

    2015-01-01

    Background: Prior research has shown that test anxiety is negatively related to academic buoyancy, but it is not known whether test anxiety is an antecedent or outcome of academic buoyancy. Furthermore, it is not known whether academic buoyancy is related to performance on high-stakes examinations. Aims: To test a model specifying reciprocal…

  2. Leveraging the Potential of Peer Feedback in an Academic Writing Activity through Sense-Making Support

    Science.gov (United States)

    Wichmann, Astrid; Funk, Alexandra; Rummel, Nikol

    2018-01-01

    The act of revising is an important aspect of academic writing. Although revision is crucial for eliminating writing errors and producing high-quality texts, research on writing expertise shows that novices rarely engage in revision activities. Providing information on writing errors by means of peer feedback has become a popular method in writing…

  3. Socialization of Perceived Academic Competence among Highly Competent Children.

    Science.gov (United States)

    Phillips, Deborah A.

    1987-01-01

    Academically competent third-graders and their parents were studied to (1) determine whether the illusion of incompetence documented in fifth graders appears in younger children; and (2) examine the influence that parents exert on their children's development of self-perceptions of academic competence. (PCB)

  4. Examining gray matter structure associated with academic performance in a large sample of Chinese high school students.

    Science.gov (United States)

    Wang, Song; Zhou, Ming; Chen, Taolin; Yang, Xun; Chen, Guangxiang; Wang, Meiyun; Gong, Qiyong

    2017-04-18

    Achievement in school is crucial for students to be able to pursue successful careers and lead happy lives in the future. Although many psychological attributes have been found to be associated with academic performance, the neural substrates of academic performance remain largely unknown. Here, we investigated the relationship between brain structure and academic performance in a large sample of high school students via structural magnetic resonance imaging (S-MRI) using voxel-based morphometry (VBM) approach. The whole-brain regression analyses showed that higher academic performance was related to greater regional gray matter density (rGMD) of the left dorsolateral prefrontal cortex (DLPFC), which is considered a neural center at the intersection of cognitive and non-cognitive functions. Furthermore, mediation analyses suggested that general intelligence partially mediated the impact of the left DLPFC density on academic performance. These results persisted even after adjusting for the effect of family socioeconomic status (SES). In short, our findings reveal a potential neuroanatomical marker for academic performance and highlight the role of general intelligence in explaining the relationship between brain structure and academic performance.

  5. Academic stress levels were positively associated with sweet food consumption among Korean high-school students.

    Science.gov (United States)

    Kim, Yeonsoo; Yang, Hye Young; Kim, Ae-Jung; Lim, Yunsook

    2013-01-01

    The objectives of the present study were to identify the association among levels of persistent academic stress, appetite, and dietary habits and to determine the specific types of sweet foods consumed by Korean high-school students according to their academic stress levels. The study participants included 333 high-school students in the 10th to 12th grades in Kyunggi Province, Korea. The level of academic stress was scored with a 75-item academic stress scale and was categorized as high, medium, or low. A food-frequency questionnaire was used to measure the sugar intake from sweet foods. Korean high-school students with a high academic stress level had larger meals than the other students. Compared with students with low academic stress, the students with high academic stress had a higher frequency of sugar intake from the following food types: confectionaries, candies and chocolates, breads, and flavored milk. Moreover, compared with students with low academic stress, the students with high academic stress had a higher total intake of sugar from the following food types: confectionaries, candies, chocolates, flavored milk, traditional Korean beverages, and spicy, sweet, and fried rice cakes. Unhealthy stress-related food choices may compromise high-school students' health and contribute to their morbidity. The findings of the present study could be used to help nutritionists develop effective strategies for nutritional education and counseling to improve adolescent health. Copyright © 2013 Elsevier Inc. All rights reserved.

  6. Harsh parenting and academic achievement in Chinese adolescents: Potential mediating roles of effortful control and classroom engagement.

    Science.gov (United States)

    Wang, Mingzhong; Deng, Xueli; Du, Xiuxiu

    2018-04-01

    This study examined (a) the potential mediating roles of effortful control and classroom engagement in the association between harsh parenting and adolescent academic achievement, and (b) the potential moderating role of gender. Sixth through eighth graders in rural China (n=815, mean age=12.55years) reported on harsh parenting, effortful control, and classroom engagement. Parents also reported on each other's harsh parenting. Academic achievement was assessed by students' test scores and teacher-rated academic performance. Results of structural equation modeling revealed gender differences in patterns of association among the model variables. Harsh parenting was negatively and directly associated with academic achievement for both boys and girls. It was also negatively and indirectly associated with academic achievement via effortful control and classroom engagement sequentially, forming a common indirect "path" for boys and girls. The indirect negative effect of harsh parenting on boys' academic achievement was mainly realized through the mediator of effortful control, whereas this same indirect effect for girls was mainly realized through the mediator of classroom engagement. Jointly, effortful control and classroom engagement precipitates more indirect effects for boys than for girls in the association between harsh parenting and academic achievement. The discussion analyzes the potential "paths" from harsh parenting to adolescent academic achievement, as well as gender differences in these "paths." The current study has implications for teachers and parents eager to improve students' classroom engagement and academic achievement. Copyright © 2017. Published by Elsevier Ltd.

  7. Academic Vulnerability and Resilience during the Transition to High School: The Role of Social Relationships and District Context

    Science.gov (United States)

    Langenkamp, Amy G.

    2010-01-01

    The transition to high school is a critical stage in students' academic trajectories and can be especially difficult for middle school students who struggle academically. Starting high school on a low academic track and with low academic performance often leads to dropping out of high school. This study investigates what might protect academically…

  8. International note: between-domain relations of Chinese high school students' academic achievements.

    Science.gov (United States)

    Yangyang, Liu

    2012-08-01

    The present study examined the between-domain relations of Chinese high school students' academic achievements. In a sample of 1870 Chinese 10th grade students, the results indicated that Chinese high school students' academic achievements were correlated across nine subjects. In line with the previous Western findings, the findings suggested that academic achievement was largely domain-general in nature. Copyright © 2012 The Foundation for Professionals in Services for Adolescents. Published by Elsevier Ltd. All rights reserved.

  9. [The relationship between autonomous motivation and academic adjustment in junior high school students].

    Science.gov (United States)

    Nishimura, Takuma; Sakurai, Shigeo

    2013-10-01

    This study investigated the relationship between autonomous motivation and academic adjustment based on the perspective of self-determination theory. It also examined motivational profiles to reveal individual differences and the characteristic of these profiles for groups with varying levels of autonomous and controlled regulation (autonomous, controlled, high motivation, and low motivation). Data were collected from 442 junior high school students for academic motivation, academic performance, academic competence, meta-cognitive strategy, academic anxiety, apathy, and stress experience. Correlation analyses generally supported the basic hypothesis of self-determination theory that a more autonomous regulation style was strongly related to academic adjustment. The results also showed that persons with a high autonomous regulation and a low controlled regulation style were the most adaptive.

  10. Academic medicine meets managed care: a high-impact collision.

    Science.gov (United States)

    Carey, R M; Engelhard, C L

    1996-08-01

    The managed care revolution is sweeping the country as a result of intense marketing on the part of managed care organizations and the widespread belief that price-sensitive managed care systems will control health costs. Although few believe that managed care alone can adequately stem the growth of nation health care spending, competition based on price has emerged as a powerful force in the health care sector. Academic health center (AHCs) stand to suffer with this new managed care regime because their special missions of teaching, research, and highly specialized clinical care make them more expensive than nonacademic hospitals and place them at a noncompetitive disadvantage. The traditional focus of the acute care hospital with individual departmentally designed programs will be narrow. Major changes will be required on the part of AHCs if they are to survive and preserve patient volume, maintain the integrity of medical education, advance scientific research, and provide highly specialized care. AHCs will have to make unprecedented adjustments in virtually every phase of their operations, particularly in the areas of clinical decision making and speedy patient-related information flow. A premium will be placed on multidisciplinary, inclusive medical services that can assume total health care risks for large populations. New ways of educating students in ambulatory settings with an emphasis on outcomes and population-based health will be needed along with the traditional responsibility of pursuing new approaches to the diagnosis, treatment, and prevention of disease. The extent to which managed care will ultimately alter the traditional role of AHCs in the American health care system is unclear, but successful adaptation in the short term will require them to respond broadly, flexibly, and in a timely fashion to the anticipated health care scene.

  11. Effects of High School Students' Perceptions of School Life Quality on Their Academic Motivation Levels

    Science.gov (United States)

    Akin Kösterelioglu, Meltem; Kösterelioglu, Ilker

    2015-01-01

    This study aims to identify the effects of high school students' perceptions of school life quality on their academic motivation levels. The study was conducted on a sample of high school students (n = 2371) in Amasya Province in the fall semester of 2013-2014 academic year. Study sample was selected with the help of cluster sampling method. Data…

  12. Disentangling the Predictive Validity of High School Grades for Academic Success in University

    Science.gov (United States)

    Vulperhorst, Jonne; Lutz, Christel; de Kleijn, Renske; van Tartwijk, Jan

    2018-01-01

    To refine selective admission models, we investigate which measure of prior achievement has the best predictive validity for academic success in university. We compare the predictive validity of three core high school subjects to the predictive validity of high school grade point average (GPA) for academic achievement in a liberal arts university…

  13. Investigating the Link between Home-School Dissonance and Academic Cheating among High School Students

    Science.gov (United States)

    Brown-Wright, Lynda; Tyler, Kenneth M.; Stevens-Watkins, Danelle; Thomas, Deneia; Mulder, Shambra; Hughes, Travonia; Stevens-Morgan, Ruby; Roan-Belle, Clarissa; Gadson, Nadia; Smith, La Toya

    2013-01-01

    The current study examined the association between home-school dissonance and academic cheating among 344 high school juniors and seniors at two urban high schools. Students completed two subscales of the Patterns of Adaptive Learning Scale (PALS) and one subscale of the Academic Motivation Scale (AMS). Analyses revealed that home-school…

  14. Academic attainment and the high school science experiences among high-achieving African American males

    Science.gov (United States)

    Trice, Rodney Nathaniel

    This study examines the educational experiences of high achieving African American males. More specifically, it analyzes the influences on their successful navigation through high school science. Through a series of interviews, observations, questionnaires, science portfolios, and review of existing data the researcher attempted to obtain a deeper understanding of high achieving African American males and their limitations to academic attainment and high school science experiences. The investigation is limited to ten high achieving African American male science students at Woodcrest High School. Woodcrest is situated at the cross section of a suburban and rural community located in the southeastern section of the United States. Although this investigation involves African American males, all of whom are successful in school, its findings should not be generalized to this nor any other group of students. The research question that guided this study is: What are the limitations to academic attainment and the high school science experiences of high achieving African American males? The student participants expose how suspension and expulsion, special education placement, academic tracking, science instruction, and teacher expectation influence academic achievement. The role parents play, student self-concept, peer relationships, and student learning styles are also analyzed. The anthology of data rendered three overarching themes: (1) unequal access to education, (2) maintenance of unfair educational structures, and (3) authentic characterizations of African American males. Often the policies and practices set in place by school officials aid in creating hurdles to academic achievement. These policies and practices are often formed without meaningful consideration of the unintended consequences that may affect different student populations, particularly the most vulnerable. The findings from this study expose that high achieving African American males face major

  15. What factors determine academic achievement in high achieving undergraduate medical students? A qualitative study.

    Science.gov (United States)

    Abdulghani, Hamza M; Al-Drees, Abdulmajeed A; Khalil, Mahmood S; Ahmad, Farah; Ponnamperuma, Gominda G; Amin, Zubair

    2014-04-01

    Medical students' academic achievement is affected by many factors such as motivational beliefs and emotions. Although students with high intellectual capacity are selected to study medicine, their academic performance varies widely. The aim of this study is to explore the high achieving students' perceptions of factors contributing to academic achievement. Focus group discussions (FGD) were carried out with 10 male and 9 female high achieving (scores more than 85% in all tests) students, from the second, third, fourth and fifth academic years. During the FGDs, the students were encouraged to reflect on their learning strategies and activities. The discussion was audio-recorded, transcribed and analysed qualitatively. Factors influencing high academic achievement include: attendance to lectures, early revision, prioritization of learning needs, deep learning, learning in small groups, mind mapping, learning in skills lab, learning with patients, learning from mistakes, time management, and family support. Internal motivation and expected examination results are important drivers of high academic performance. Management of non-academic issues like sleep deprivation, homesickness, language barriers, and stress is also important for academic success. Addressing these factors, which might be unique for a given student community, in a systematic manner would be helpful to improve students' performance.

  16. THE ACADEMIC PERSONNEL MOTIVATION - A FACTOR FOR HIGH QUALITY EDUCATIONAL PRODUCT

    Directory of Open Access Journals (Sweden)

    Viara Slavianska

    2014-06-01

    Full Text Available The present paper consecutively puts an accent on 1 the quality of higher education as a national priority, 2 the qualification and motivation of the academic staff as factors for offering an educational product of high quality, 3 the strategies, policies and practices for motivating the academic personnel. The necessity of education improvement is adduced, the strategies and politics in the field of academic personnel training are presented, and the possible effects from a wrong approach to employees’ motivation in academic environment are commented.

  17. Assisting the High Administrative Court in Restricting Too Broad a Concept of Academic Judgment.

    Science.gov (United States)

    Cardao-Pito, Tiago

    2016-01-01

    I have received substantial monetary compensation and a formal apology from my first doctoral school, and a Ph.D. from another university. This essay describes my personal view on discussing the boundaries of academic judgment and research supervision with the ombudsman agency for higher education, and at the High Administrative Court of England and Wales. The Court's judicial doctrine addresses substantial research accountability matters. It clarifies that although the Court and ombudsman agency must not interfere with academic judgment, not everything done by an academic can be considered as academic judgment. A Ph.D. supervisor can seriously fail to perform his/her duties.

  18. Gender, Self-Perception, and Academic Problems in High School.

    Science.gov (United States)

    Crosnoe, Robert; Riegle-Crumb, Catherine; Muller, Chandra

    2007-01-01

    Given the increasing importance of education to socioeconomic attainment and other life course trajectories, early academic struggles can have long-term consequences if not addressed. Analysis of a nationally representative sample with official school transcripts and extensive data on adolescent functioning identified a social psychological pathway in this linkage between external feedback about early struggles and truncated educational trajectories. For girls, class failures absent of diagnosed learning disabilities engendered increasingly negative self-perceptions that, in turn, disrupted math and science course-taking, especially in family and peer contexts in which academic success was prioritized. For boys, diagnosed learning disabilities, regardless of class performance, engendered the same changes in self-perception and the same consequences of these changes for course-taking across family and peer contexts. These results reveal how ability labels and ability-related performance indicators come together to influence the long-term educational prospects of girls and boys attending mainstream schools in which the majority of students do not have learning disabilities or severe academic problems. Keywords: education, learning disability, academic failure, peers, and stigma.

  19. Unforgiving Confucian Culture: A Breeding Ground for High Academic Achievement, Test Anxiety and Self-Doubt?

    Science.gov (United States)

    Stankov, Lazar

    2010-01-01

    This paper reviews findings from several studies that contribute to our understanding of cross-cultural differences in academic achievement, anxiety and self-doubt. The focus is on comparisons between Confucian Asian and European regions. Recent studies indicate that high academic achievement of students from Confucian Asian countries is…

  20. Religiousness as a Predictor of Academic Performance among High-school Students.

    Science.gov (United States)

    Park, Hae-Seong

    2001-01-01

    Investigated the relationship between high school students' religiousness and academic achievement, noting the effects of ethnicity. Data from two followups of the National Educational Longitudinal Study of 1988 indicated that religiousness related to academic achievement, though the link was mediated by other psychosocial factors. The…

  1. The Academic Procrastination in Junior High School Students' Mathematics Learning: A Qualitative Study

    Science.gov (United States)

    Asri, Dahlia Novarianing; Setyosari, Punaji; Hitipeuw, Imanuel; Chusniyah, Tutut

    2017-01-01

    Among the main causes of low learning achievement in mathematics learning is a delayed behavior to do tasks, commonly called academic procrastination. The objectives of this research are to describe and to explain the causal factors and consequences of academic procrastination in learning mathematics for junior high school students. This research…

  2. Student Bedtimes, Academic Performance, and Health in a Residential High School.

    Science.gov (United States)

    Wernette, Maliah J; Emory, Jan

    2017-08-01

    Inadequate sleep among adolescents is considered an epidemic in the United States. Late night bedtimes could be an important factor in academic performance and health with consequences continuing throughout adulthood. The purpose of this study was to explore the relationships between late night bedtimes, academic performance (grade point average [GPA]), and utilization of health care (school nurse visits) in a residential high school. The data were collected from archival records for one academic semester. The statistical analysis employed the nonparametric Pearson's correlation coefficient ( r) with the standard level of significance (α = .05). Positive and inverse linear relationships were found between bedtime and school nurse visits ( p < .00001) and bedtime and GPA ( p = .007). The findings suggest students' late night bedtimes may be related to increased school nurse visits and lower academic performance. Adolescent late night bedtimes may be an important consideration for academic success and maintaining health in residential high schools.

  3. Investigation of Academic Procrastination Prevalence and Its Relationship with Academic Self-Regulation and Achievement Motivation among High-School Students in Tehran City

    Science.gov (United States)

    Ebadi, Setareh; Shakoorzadeh, Reza

    2015-01-01

    The present study was carried out with the aim of Investigation of academic procrastination prevalence and its relationship with academic self-regulation and achievement motivation among high-school students in Tehran city. The sample included 624 high school students (312 Boys & 312 Girls) from different areas and regions that selected using…

  4. The relationship between psychological adjustment and social protection with academic self-concept and academic achievement among high school female students in Rasht

    Directory of Open Access Journals (Sweden)

    Kobra Dadarigashti

    2016-07-01

    Full Text Available The study conducted to examine the relationship between psychological adjustment and social protection with academic self-concept and academic achievement among high school female students in Rasht. The research is descriptive correlational. The target population includes all female students studying in Rasht in 2015. By random cluster sampling method and based on the variables, 180 subjects selected. In this study, to collect data, psychological adjustment and social support, academic self-concept and academic achievement questionnaire are used. To test the hypothesis of this research, the parametric statistical Pearson correlation and regression tests are used. Moreover, all statistical operations were analyzed by using SPSS software. The research results showed that the correlation values between psychological adjustment and social support with academic self-concept and academic achievement of high school female students is statistically significant ( 01/0 > p.

  5. Final report on a pilot academic e-books project at Keio University Libraries : Potential for the scholarly use of digitized academic books

    Science.gov (United States)

    Shimada, Takashi

    This article reports on the results and significance of a pilot academic e-books project carried out at the Keio University Libraries for fiscal 2010 to 2012 to assess the viability of a new model of the libraries providing all the campuses with accesses to Japanese academic books digitized jointly with academic publishers and cooperative firms. It focuses on the experimental use of digitized books, highlighting the students’ attitudes and expectations towards e-books as found from surveys. Some major findings include the following. Users have a strong demand for digitized readings that are rather lookup-oriented than learning-oriented, with greater value placed on the functionalities of federated full-text searching, reading on a screen, and accessing the desired chapter direct from table of contents. They also want an online space in which to manage different forms of digitized learning resources. We investigated the potential of e-books and new type of textbooks as educational infrastructures based on the results of experiment. Japan’s university libraries should need to engage actively in the mass digitization of academic books to be adaptive to the change in the ways research, study and teaching are conducted. We plan to start a joint experiment with other university libraries to develop a practical model for the use of e-books.

  6. [Changes in academic motivation among elementary and junior high school students].

    Science.gov (United States)

    Nishimura, Takuma; Sakurai, Shigeo

    2013-02-01

    This study examined changes in academic motivation among elementary and junior high school students. Based on self-determination theory (Ryan & Deci, 2000a), we focused on changes in autonomous and controlled motivation. In Study 1, we examined inter-individual changes in academic motivation among 5th to 9th grade students (N = 1 572) through a cross-sectional study. In Study 2, we examined intra-individual changes in academic motivation among students (N = 128) who were in transition from elementary to junior high school through a longitudinal study. All participants completed the Academic Motivation Scale (Nishimura, Kawamura, & Sakurai, 2011) that measured autonomous and controlled motivation. The results revealed that autonomous motivation decreased in the students from elementary to junior high school, while controlled motivation increased during the same period. This is a unique finding because a prior study conducted in a Western culture suggested that both motivations decrease gradually in school.

  7. [Depression status of academic high school students in Seoul: mediating role of entrapment].

    Science.gov (United States)

    Park, Young-Joo; Shin, Nah-Mee; Han, Kuem-Sun; Kang, Hyun-Cheol; Cheon, Sook-Hee; Shin, Hyunjeong

    2011-10-01

    Purpose of this study was to investigate the status of depression in academic high school students and path analysis model for exploring the mediating role of entrapment to depression in relation to academic stress and perceived social support. Measurements were four reliable questionnaires measuring academic stress, social support, entrapment, and depression. Data were collected from students in 17 high schools in Seoul. Students (n=5,346) completing the questionnaires indicated depression & entrapment from academic stress. Depression was more prevalent in girls, those whose parents' household income was less than two million won, who did not live with father or mother or both due to divorce, separation, or death, and those who smoked or used alcohol. Entrapment was more prevalent in students similar to cases of depression and in seniors. According to the proposed path model, 48.6% of depression was explained by academic stress, social support, and entrapment. The indirect effect of entrapment as a mediator between academic stress and depression was verified and larger than the direct effect of academic stress on depression. Considering levels of depression and entrapment demonstrated by these students, better mental health programs with diverse strategies should be developed for their psychological well-being.

  8. Academic coordination at university: Strategies for high quality education

    Directory of Open Access Journals (Sweden)

    Maria del Mar Durán Bellonch

    2009-08-01

    Full Text Available Most lecturers and professors involved in teaching School Management and Education Management courses have been engaged in developing some innovative actions to improve the training quality that we offer to students in the Pedagogy degree at the Autonomous University of Barcelona. These actions are aimed at increasing co-ordination among the teaching staff when designing and implementing the course curricula. Co-ordination meetings, exchanges of teaching experiences, discussions about what, how and when to teach the different contents, in which courses and at what level, methodological issues pointed out through technical description cards or the elaboration of study cases to be solved have become the basis of relevant actions during the last academic years. This paper explains each one of them, and provides useful information about the theoretical background, the process carried out, some of the results obtained, the output and the tools created.

  9. Relations among Academic Enablers and Academic Achievement in Children with and without High Levels of Parent-Rated Symptoms of Inattention, Impulsivity, and Hyperactivity

    Science.gov (United States)

    Demaray, Michelle Kilpatrick; Jenkins, Lyndsay N.

    2011-01-01

    This study examined the relationships among academic enablers (i.e., engagement, interpersonal skills, motivation, study skills) and academic achievement in children with and without high levels of parent-rated symptoms of inattention, impulsivity, and hyperactivity (Symptoms of IIH Group). The study included 69 participants (29 [42%] in the IIH…

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

    Directory of Open Access Journals (Sweden)

    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.

  11. Opportunity Makes the Cheater: High School Students and Academic Dishonesty

    Directory of Open Access Journals (Sweden)

    Andrej Šorgo

    2015-12-01

    Full Text Available The purpose of this study was to reveal data about cheating behaviours in Slovenian upper secondary schools, to raise awareness and to lower tolerance for such behaviour. To acquire information about demographics, cheating behaviour, and opinions on such behaviour, we compiled a questionnaire that targeted a university population of first-year students (N=323. From the results, it was revealed that cheating is a way of life in Slovenian schools, and almost all students at least occasionally indulge in some academic misbehaviour. It seems that a culture tolerant or even supportive of such behaviour has been established among students, parents and teachers, all working together to “help” students climb the ladder of success. The open question is whether all kinds of cheating are even recognized as such. Cheating is most common in homework, but at the other end, even systems such as external exams are not immune to fraud. At the moment, classic methods of cheating dominate. Differences between characters (e.g. gender and educational institutions in most cases are non-existent or small, a finding that could aid in establishing measures to prevent cheating inside schools as institutions.

  12. Potential applications of high temperature helium

    International Nuclear Information System (INIS)

    Schleicher, R.W. Jr.; Kennedy, A.J.

    1992-09-01

    This paper discusses the DOE MHTGR-SC program's recent activity to improve the economics of the MHTGR without sacrificing safety performance and two potential applications of high temperature helium, the MHTGR gas turbine plant and a process heat application for methanol production from coal

  13. Implicit Assumptions in High Potentials Recruitment

    Science.gov (United States)

    Posthumus, Jan; Bozer, Gil; Santora, Joseph C.

    2016-01-01

    Purpose: Professionals of human resources (HR) use different criteria in practice than they verbalize. Thus, the aim of this research was to identify the implicit criteria used for the selection of high-potential employees in recruitment and development settings in the pharmaceutical industry. Design/methodology/approach: A semi-structured…

  14. Sleep health, messaging, headaches, and academic performance in high school students.

    Science.gov (United States)

    Pecor, Keith; Kang, Lilia; Henderson, Matthew; Yin, Sunny; Radhakrishnan, Varsha; Ming, Xue

    2016-06-01

    We tested for associations of bedtime, sleep duration, instant messaging, and chronic headaches with hypersomnolence and academic performance in a sample of high school students in New Jersey, USA. Students were surveyed anonymously and asked to report their sleep and messaging habits, headache status, and overall grades. We found that greater hypersomnolence was associated with later bedtimes, shorter sleep durations, and the presence of chronic headaches, but not with messaging after lights out. Also, we found that academic performance was lower in students who messaged after lights out, but it was not affected by headache status, bedtime, or sleep duration. These results are consistent with other studies that have demonstrated associations between headaches and hypersomnolence and between instant messaging habits and academic performance. They also add to a growing literature on the relationships among use of electronic devices, sleep health, and academic performance by adolescents. Copyright © 2015 The Japanese Society of Child Neurology. Published by Elsevier B.V. All rights reserved.

  15. The potential conflict between policy and ethics in caring for undocumented immigrants at academic health centers.

    Science.gov (United States)

    Cacari Stone, Lisa; Steimel, Leah; Vasquez-Guzman, Estela; Kaufman, Arthur

    2014-04-01

    Academic health centers (AHCs) are at the forefront of delivering care to the diverse medically underserved and uninsured populations in the United States, as well as training the majority of the health care workforce, who are professionally obligated to serve all patients regardless of race or immigration status. Despite AHCs' central leadership role in these endeavors, few consolidated efforts have emerged to resolve potential conflicts between national, state, and local policies that exclude certain classifications of immigrants from receiving federal public assistance and health professionals' social missions and ethical oath to serve humanity. For instance, whereas the 2010 Patient Protection and Affordable Care Act provides a pathway to insurance coverage for more than 30 million Americans, undocumented immigrants and legally documented immigrants residing in the United States for less than five years are ineligible for Medicaid and excluded from purchasing any type of coverage through state exchanges. To inform this debate, the authors describe their experience at the University of New Mexico Hospital (UNMH) and discuss how the UNMH has responded to this challenge and overcome barriers. They offer three recommendations for aligning AHCs' social missions and professional ethics with organizational policies: (1) that AHCs determine eligibility for financial assistance based on residency rather than citizenship, (2) that models of medical education and health professions training provide students with service-learning opportunities and applied community experience, and (3) that frontline staff and health care professionals receive standardized training on eligibility policies to minimize discrimination towards immigrant patients.

  16. The battle of Alzheimer's Disease - the beginning of the future Unleashing the potential of academic discoveries.

    Science.gov (United States)

    Lundkvist, Johan; Halldin, Magnus M; Sandin, Johan; Nordvall, Gunnar; Forsell, Pontus; Svensson, Samuel; Jansson, Liselotte; Johansson, Gunilla; Winblad, Bengt; Ekstrand, Jonas

    2014-01-01

    Alzheimer's Disease (AD) is the most common form of dementia, affecting approximately 36 million people worldwide. To date there is no preventive or curative treatment available for AD, and in absence of major progress in therapeutic development, AD manifests a concrete socioeconomic threat. The awareness of the growing problem of AD is increasing, exemplified by the recent G8 Dementia Summit, a meeting held in order to set the stage and steer the compass for the future. Simultaneously, and paradoxically, we have seen key players in the pharmaceutical industry that have recently closed or significantly decreased their R&D spending on AD and other CNS disorders. Given the pressing need for new treatments in this area, other actors need to step-in and enter this drug discovery arena complementing the industrial efforts, in order to turn biological and technological progress into novel therapeutics. In this article, we present an example of a novel drug discovery initiative that in a non-profit setting, aims to integrate with both preclinical and clinical academic groups and pharmaceutical industry to explore the therapeutic potential of new concepts in patients, using novel biology, state of the art technologies and rapid concept testing.

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

    Directory of Open Access Journals (Sweden)

    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.

  18. Computer simulations in the high school: students' cognitive stages, science process skills and academic achievement in microbiology

    Science.gov (United States)

    Huppert, J.; Michal Lomask, S.; Lazarowitz, R.

    2002-08-01

    Computer-assisted learning, including simulated experiments, has great potential to address the problem solving process which is a complex activity. It requires a highly structured approach in order to understand the use of simulations as an instructional device. This study is based on a computer simulation program, 'The Growth Curve of Microorganisms', which required tenth grade biology students to use problem solving skills whilst simultaneously manipulating three independent variables in one simulated experiment. The aims were to investigate the computer simulation's impact on students' academic achievement and on their mastery of science process skills in relation to their cognitive stages. The results indicate that the concrete and transition operational students in the experimental group achieved significantly higher academic achievement than their counterparts in the control group. The higher the cognitive operational stage, the higher students' achievement was, except in the control group where students in the concrete and transition operational stages did not differ. Girls achieved equally with the boys in the experimental group. Students' academic achievement may indicate the potential impact a computer simulation program can have, enabling students with low reasoning abilities to cope successfully with learning concepts and principles in science which require high cognitive skills.

  19. Academic self-efficacy for high school scale: search for psychometrics evidence

    Directory of Open Access Journals (Sweden)

    Soely Polydoro

    2015-05-01

    Full Text Available This article aims to present the adaptation and the search for psychometrics evidence of an academic self-efficacy scale. High school students (N = 453 participated of the research (mean age 15.93; SD 1.2. The Academic Self-efficacy Scale for High School is an adapted scale composed of 16 items and organized into three factors: self-efficacy for learning, self-efficacy to act in school life, and self-efficacy for the career decision. Through exploratory factor analysis, a KMO = 0.90 was verified, and 56.57% of the variance was explained. The internal consistency was 0.88. The scale demonstrated good conditions to identify academic self-efficacy of high school students.

  20. The Role of Goal Importance in Predicting University Students' High Academic Performance

    Science.gov (United States)

    Kyle, Vanessa A.; White, Katherine M.; Hyde, Melissa K.; Occhipinti, Stefano

    2014-01-01

    We examined goal importance, focusing on high, but not exclusive priority goals, in the theory of planned behaviour (TPB) to predict students' academic performance. At the beginning of semester, students in a psychology subject (N = 197) completed TPB and goal importance items for achieving a high grade. Regression analyses revealed partial…

  1. Validity and Reliability of the Academic Resilience Scale in Turkish High School

    Science.gov (United States)

    Kapikiran, Sahin

    2012-01-01

    The present study aims to determine the validity and reliability of the academic resilience scale in Turkish high school. The participances of the study includes 378 high school students in total (192 female and 186 male). A set of analyses were conducted in order to determine the validity and reliability of the study. Firstly, both exploratory…

  2. The Effect of the Time Management Art on Academic Achievement among High School Students in Jordan

    Science.gov (United States)

    Al-Zoubi, Maysoon

    2016-01-01

    This study aimed at recognizing the effect of the Time Management Art on academic achievement among high school students in the Hashemite Kingdom of Jordan. The researcher employed the descriptive-analytic research to achieve the purpose of the study where he chose a sample of (2000) high school female and male students as respondents to the…

  3. The Importance of Very High Life Satisfaction for Students' Academic Success

    Science.gov (United States)

    Antaramian, Susan

    2017-01-01

    This study investigated whether very high levels of life satisfaction were associated with academic success at the college level. Three-hundred fifty-seven university students reported on their life satisfaction and various indicators of educational functioning. Participants with very high life satisfaction (top 10%) were compared to those with…

  4. Neuroprotective potential of high-dose biotin.

    Science.gov (United States)

    McCarty, Mark F; DiNicolantonio, James J

    2017-11-01

    A recent controlled trial has established that high-dose biotin supplementation - 100 mg, three times daily - has a stabilizing effect on progression of multiple sclerosis (MS). Although this effect has been attributed to an optimization of biotin's essential cofactor role in the brain, a case can be made that direct stimulation of soluble guanylate cyclase (sGC) by pharmacological concentrations of biotin plays a key role in this regard. The utility of high-dose biotin in MS might reflect an anti-inflammatory effect of cGMP on the cerebral microvasculature, as well on oligodendrocyte differentiation and on Schwann cell production of neurotrophic factors thought to have potential for managing MS. But biotin's ability to boost cGMP synthesis in the brain may have broader neuroprotective potential. In many types of neurons and neural cells, cGMP exerts neurotrophic-mimetic effects - entailing activation of the PI3K-Akt and Ras-ERK pathways - that promote neuron survival and plasticity. Hippocampal long term potentiation requires nitric oxide synthesis, which in turn promotes an activating phosphorylation of CREB via a pathway involving cGMP and protein kinase G (PKG). In Alzheimer's disease (AD), amyloid beta suppresses this mechanism by inhibiting sGC activity; agents which exert a countervailing effect by boosting cGMP levels tend to restore effective long-term potentiation in rodent models of AD. Moreover, NO/cGMP suppresses amyloid beta production within the brain by inhibiting expression of amyloid precursor protein and BACE1. In conjunction with cGMP's ability to oppose neuron apoptosis, these effects suggest that high-dose biotin might have potential for the prevention and management of AD. cGMP also promotes neurogenesis, and may lessen stroke risk by impeding atherogenesis and hypertrophic remodeling in the cerebral vasculature. The neuroprotective potential of high-dose biotin likely could be boosted by concurrent administration of brain

  5. Food for thought? Potential conflicts of interest in academic experts advising government and charities on dietary policies.

    Science.gov (United States)

    Newton, Alex; Lloyd-Williams, Ffion; Bromley, Helen; Capewell, Simon

    2016-08-05

    A conflict of interest (CoI) can occur between public duty and private interest, in which a public official's private-capacity interest could improperly influence the performance of their official duties and responsibilities. The most tangible and commonly considered CoI are financial. However, CoI can also arise due to other types of influence including interpersonal relationships, career progression, or ideology. CoI thus exist in academia, business, government and non-governmental organisations. However, public knowledge of CoI is currently limited due to a lack of information. The mechanisms of managing potential conflicts of interest also remain unclear due to a lack of guidelines. We therefore examined the independence of academic experts and how well potential CoI are identified and addressed in four government and non-governmental organisations in the UK responsible for the development of food policy. Policy analysis. We developed an analytical framework to explore CoI in high-level UK food policy advice, using four case studies. Two government policy-making bodies: Department of Health 'Obesity Review Group' (ORG), 'Scientific Advisory Committee on Nutrition' (SACN) and two charities: 'Action on Sugar' (AoS), & 'Heart of Mersey' (HoM). Information was obtained from publicly available sources and declarations. We developed a five point ordinal scale based upon the ideology of the Nolan Principles of Public Life. Group members were individually categorised on the ordinal ConScale from "0", (complete independence from the food and drink industry) to "4", (employed by the food and drink industry or a representative organisation). CoI involving various industries have long been evident in policy making, academia and clinical practice. Suggested approaches for managing CoI could be categorised as "deny", "describe", or "diminish". Declared CoI were common in the ORG and SACN. 4 out of 28 ORG members were direct industry employees. In SACN 11 out of 17 members

  6. Academic Discipline and Personal Finance Instruction in High School

    Science.gov (United States)

    Loibl, Cäzilia; Fisher, Patti J.

    2013-01-01

    Despite public support for personal finance instruction in high school, its effectiveness has not been firmly established. The current study investigates instructional approaches as a reason for these inconsistent outcomes by comparing survey responses of business education, family and consumer sciences, and social studies/economics teachers. The…

  7. Resilience influence, goals and social context in the academic achievement of high school students

    Directory of Open Access Journals (Sweden)

    José Concepción Gaxiola Romero

    2012-05-01

    Full Text Available The academic achievement in high school students of Mexico, according to national and international evaluations has been insufficient. In spite of this situation, is possible to find excellent students, even in the context of sharing negative contextual and physical conditions. There are few investigations that describe the variables associated to resilient students. The alumni that are beyond the risks are called resilient (Rutter, 2007. The aim of this research was to explore and identify the internal variables: goals and resilience, and the external variables: risky neighborhood and risky friends that predicted the scholar achievement of high school students. To measure those variables, was used a compilation of scales validated in the region. The data were analyzed using structural equation modeling, and show that resilience predicted indirectly the scholar achievement trough the academic goals. The results could be used in programs to improve the academic achievement of this group of students.

  8. Student Perception of Academic Achievement Factors at High School

    OpenAIRE

    Bahar, Mustafa

    2015-01-01

    Measuring the quality of the ‘product’ is elemental in education, and most studies depend on observational data about student achievement factors, focusing overwhelmingly on quantitative data namely achievement scores, school data like attendance, facilities, expenditure class size etc. But there is little evidence of learner perceptions. 553 students from two different universities, who graduated from 3 high school types, were asked to respond to two fundamental questions to reflect on schoo...

  9. High-speed Internet Use and Academic Gratifications in the College Residence.

    Science.gov (United States)

    Matthews, Denise; Schrum, Lynne

    2003-01-01

    A multimethod exploration of undergraduates' high-speed Internet use in residence halls took a uses-and-gratifications approach and revealed Internet use as integral to students' lives. Students' negative comments about Internet distractions from academic work led to identification of an individual difference variable, internal locus of control of…

  10. Credentialism and Academic Standards: The Evolution of High School Graduation Requirements.

    Science.gov (United States)

    Serow, Robert C.

    1986-01-01

    The credentialist thesis is applied to high school graduation requirements by tracing their transformation according to societal demand. Because of demands for further education and academic excellence, secondary education presently occupies a modest position in American status aspirations and has encumbered its curricula with unrestricted…

  11. Ugandan Immigrant Students' Perceptions of Barriers to Academic Achievement in American High Schools

    Science.gov (United States)

    Ssekannyo, Denis

    2010-01-01

    In a world that is now a global village, enterprising individuals, especially from Third World countries, who make it to greener pastures do not leave their children behind. But with a long list of barriers to academic achievement associated with immigrant and minority students in American high schools, an understanding of the experiences and…

  12. Social Media Use, Loneliness, and Academic Achievement: A Correlational Study with Urban High School Students

    Science.gov (United States)

    Neto, Roque; Golz, Nancy; Polega, Meaghan

    2015-01-01

    This study explored the association between social media use, loneliness, and academic achievement in high school students and identified the demographic characteristics associated with these three elements. This study also aimed to identify the percentage of variance in loneliness accounted for by social media use and GPA. Participants were 345…

  13. Academic characteristics of orthopedic team physicians affiliated with high school, collegiate, and professional teams.

    Science.gov (United States)

    Makhni, Eric C; Buza, John A; Byram, Ian; Ahmad, Christopher S

    2015-11-01

    We conducted a study to determine the academic involvement and research productivity of orthopedic team physicians at high school, college, and professional levels of sport. Through Internet and telephone queries, we identified 1054 team physicians from 362 institutions, including 120 randomly selected high schools and colleges and 122 professional teams (baseball, basketball, football, hockey). For all physicians included in the study, we performed a comprehensive search of the Internet and of a citation database to determine academic affiliations, number of publications, and h-index values. Of the 1054 physicians, 678 (64%) were orthopedic surgeons. Percentage of orthopedic team physicians affiliated with an academic medical center was highest in professional sports (64%; 173/270) followed by collegiate sports (36%; 98/275) and high school sports (20%; 27/133). Median number of publications per orthopedic team physician was significantly higher in professional sports (30.6) than in collegiate sports (10.7) or high school sports (6). Median number of publications by orthopedic physicians also varied by sport, with the highest number in Major League Baseball (37.9; range, 0-225) followed by the National Basketball Association (32.0; range, 0-227) and the National Football League (30.4; range, 0-460), with the lowest number within the National Hockey League (20.7; range, 0-144). Academic affiliation and research productivity of orthopedic team physicians vary by competition level and professional sporting league.

  14. Exploring Rural High School Learners' Experience of Mathematics Anxiety in Academic Settings

    Science.gov (United States)

    Hlalele, Dipane

    2012-01-01

    The purpose of the study was to explore rural high school learners' experience of mathematics anxiety in academic settings. Mathematics anxiety has been found to have an adverse effect on confidence, motivation and achievement. This quantitative study is exploratory and descriptive in nature. The participants were 403 learners doing mathematics in…

  15. Spatial Experiences of High Academic Achievers: Insights from a Developmental Perspective

    Science.gov (United States)

    Weckbacher, Lisa Marie; Okamoto, Yukari

    2012-01-01

    The study explored the relationship between types of spatial experiences and spatial abilities among 13- to 14-year-old high academic achievers. Each participant completed two spatial tasks and a survey assessing favored spatial activities across five categories (computers, toys, sports, music, and art) and three developmental periods (early…

  16. Filial Piety and Academic Motivation: High-Achieving Students in an International School in South Korea

    Science.gov (United States)

    Tam, Jonathan

    2016-01-01

    This study uses self-determination theory to explore the mechanisms of filial piety in the academic motivation of eight high-achieving secondary school seniors at an international school in South Korea, resulting in several findings. First, the students attributed their parents' values and expectations as a major source of the students'…

  17. Actively Closing the Gap? Social Class, Organized Activities, and Academic Achievement in High School

    Science.gov (United States)

    Morris, David S.

    2015-01-01

    Participation in Organized Activities (OA) is associated with positive behavioral and developmental outcomes in children. However, less is known about how particular aspects of participation affect the academic achievement of high school students from different social class positions. Using the Education Longitudinal Study of 2002, this study…

  18. Brain Structure and Resting-State Functional Connectivity in University Professors with High Academic Achievement

    Science.gov (United States)

    Li, Weiwei; Yang, Wenjing; Li, Wenfu; Li, Yadan; Wei, Dongtao; Li, Huimin; Qiu, Jiang; Zhang, Qinglin

    2015-01-01

    Creative persons play an important role in technical innovation and social progress. There is little research on the neural correlates with researchers with high academic achievement. We used a combined structural (regional gray matter volume, rGMV) and functional (resting-state functional connectivity analysis, rsFC) approach to examine the…

  19. Relationships between Parenting Practices, Social Engagement, Academic Competency, and High School Dropout

    Science.gov (United States)

    Bedrossian, Alfred

    2017-01-01

    The purpose of this study was to investigate the relationships between parenting practices, social engagement, academic competency, and high school dropout. The study revealed students whose parents practiced Reactive Communication along with students that exhibited Truancy and Disciplinary Issues were more likely to drop out. Conversely, students…

  20. ENRICHMENT PROGRAM FOR ACADEMICALLY TALENTED JUNIOR HIGH SCHOOL STUDENTS FROM LOW INCOME FAMILIES.

    Science.gov (United States)

    PRESSMAN, HARVEY

    A PROPOSAL FOR AN ENRICHMENT PROGRAM FOR ACADEMICALLY TALENTED JUNIOR HIGH SCHOOL STUDENTS FROM LOW-INCOME FAMILIES IN CERTAIN AREAS OF BOSTON IS PRESENTED. BASIC ASSUMPTIONS ARE THAT THERE IS AND OBVIOUS AND PRESSING NEED TO GIVE EXTRA HELP TO THE ABLE STUDENT FROM A DISADVANTAGED BACKGROUND, AND THAT A RELATIVELY BRIEF ENRICHMENT EXPERIENCE FOR…

  1. Potential aerospace applications of high temperature superconductors

    Science.gov (United States)

    Selim, Raouf

    1994-01-01

    The recent discovery of High Temperature Superconductors (HTS) with superconducting transition temperature, T(sub c), above the boiling point of liquid nitrogen has opened the door for using these materials in new and practical applications. These materials have zero resistance to electric current, have the capability of carrying large currents and as such have the potential to be used in high magnetic field applications. One of the space applications that can use superconductors is electromagnetic launch of payloads to low-earth-orbit. An electromagnetic gun-type launcher can be used in small payload systems that are launched at very high velocity, while sled-type magnetically levitated launcher can be used to launch larger payloads at smaller velocities. Both types of launchers are being studied by NASA and the aerospace industry. The use of superconductors will be essential in any of these types of launchers in order to produce the large magnetic fields required to obtain large thrust forces. Low Temperature Superconductor (LTS) technology is mature enough and can be easily integrated in such systems. As for the HTS, many leading companies are currently producing HTS coils and magnets that potentially can be mass-produced for these launchers. It seems that designing and building a small-scale electromagnetic launcher is the next logical step toward seriously considering this method for launching payloads into low-earth-orbit. A second potential application is the use of HTS to build sensitive portable devices for the use in Non Destructive Evaluation (NDE). Superconducting Quantum Interference Devices (SQUID's) are the most sensitive instruments for measuring changes in magnetic flux. By using HTS in SQUID's, one will be able to design a portable unit that uses liquid nitrogen or a cryocooler pump to explore the use of gradiometers or magnetometers to detect deep cracks or corrosion in structures. A third use is the replacement of Infra-Red (IR) sensor leads on

  2. Potentials of Entrepreneurial Thinking for Planning : Debates during the 11th AESOP Young Academics Conference

    NARCIS (Netherlands)

    Gilliard, Lukas; Wenner, Fabian; Lamker, Christian Wilhelm; Van den Berghe, Karel; Willems, Jannes

    2017-01-01

    Between 10 and 13 April 2017, the 11th AESOP Young Academics conference took place at the Technical University of Munich on the theme of “Planning and Entrepreneurship – Planning and Public Policy at the Intersection of Top-down and Bottom-up Action”. The conference’s aim was to seek to understand

  3. Improved Academic Performance and Enhanced Employability? The Potential Double Benefit of Proactivity for Business Graduates

    Science.gov (United States)

    Tymon, Alex; Batistic, Sasa

    2016-01-01

    This study contributes to proactivity theory and debate on how universities meet competing stakeholder demands in an increasingly marketized higher education environment. We explore how the interplay between the stable facet of proactive personality and the situated behaviour of personal initiative influence academic performance. We hypothesized…

  4. Using Blogs and New Media in Academic Practice: Potential Roles in Research, Teaching, Learning, and Extension

    Science.gov (United States)

    Powell, Douglas A.; Jacob, Casey J.; Chapman, Benjamin J.

    2012-01-01

    Compiling a referenced article for publication in a peer-reviewed journal is traditionally the most respected means of contributing to a body of knowledge. However, we argue that publication of evidence-based information via new media--especially blogging--can also be a valid form of academic scholarship. Blogs allow for rapid sharing of research…

  5. Reducing test anxiety and improving academic self-esteem in high school and college students with learning disabilities.

    Science.gov (United States)

    Wachelka, D; Katz, R C

    1999-09-01

    Test anxiety seems like a benign problem to some people, but it can be potentially serious when it leads to high levels of distress and academic failure in otherwise capable students. Because test anxiety is common in older students with learning disabilities (LD), it is surprising that little research has been done on ways to reduce the distress these students experience in test situations. In this study, we used a randomized pretest-posttest control group design to examine the effectiveness of a cognitive-behavioral treatment for reducing test anxiety and improving academic self-esteem in a cohort (N = 27) of high school and college students with learning disabilities (LD). All of the students participated voluntarily. They were enrolled in classes for students with learning problems. Before the study began, they complained of test anxiety and showed an elevated score on the Test Anxiety Inventory (TAI). Eleven students (85%) completed the 8-week long treatment, which consisted of progressive muscle relaxation, guided imagery, self-instruction training, as well as training in study and test-taking skills. Results showed significant improvement in the treated group which was not evident in an untreated control group (N = 16). Compared to the control group, the treated group showed significant reductions in test anxiety on the TAI, as well as improvement in study skills and academic self-esteem as measured by the Survey of Study Habits and Attitudes, and the school scale of the Coopersmith Self-Esteem Inventory. These results extend the generality of similar studies on reducing test anxiety and improving academic self-esteem in younger students. They also suggest that relief from test anxiety can be expected fairly quickly when cognitive-behavioral methods are used. Additional implications and methodological limitations of the study are discussed.

  6. The effect of high school chemistry instruction on students' academic self-concept

    Science.gov (United States)

    Morgan, Peter Wallace

    The purpose of this study was to investigate the effect of extended instruction in high school chemistry on the academic self-concept of students and determine what parts of the learning experience need to be addressed to make the interaction a more positive one. Fifty-seven students from three metropolitan public schools, who were enrolled in college preparatory chemistry classes, were asked to complete a written instrument, before and after extended chemistry instruction, that measures academic self-concept. Twenty-one of the students who took part in the written task volunteered to answer some in-depth interview questions concerning their academic self-concept and its relationship to chemistry instruction. Student responses, instrument scores, and student chemistry grades were analyzed for a variety of chemistry learning--academic self-concept connections and interactions. Results showed that there was a positive interaction for less than half of the students involved in the interview sessions. The results from the written instrument showed similar findings. Comparing chemistry grades and academic self-concept revealed an uncertain connection between the two, especially for students with strong academic self-concepts. Students felt that the laboratory experience was often disconnected from the remainder of chemistry instruction and recommended that the laboratory experience be integrated with classroom work. Students also expressed concerns regarding the volume of algorithmic mathematical calculations associated with college preparatory chemistry instruction. Results of this study suggest that secondary chemistry instruction must become more aware of the affective domain of learning and develop a mindful awareness of its connection to the cognitive domain if chemistry teaching and learning is going to better facilitate the intellectual growth of secondary students.

  7. Scientific reasoning skills of high school students’ relationship gender and their academic success

    OpenAIRE

    Zeynep Demirtaş

    2011-01-01

    This study is aimed to examine the relationships between scientific reasoning skills of high school students and academic success that science (Physics, Chemistry and Biology), language (Turkish Language and Literature with Foreign Language), social (History and Geograpy) and ability groups (Painting, Music and Physical Education). For this purpose a test was executed to 408 first grade students from different seven high schools in Sakarya. Data were collected by a Classroom Test of Scientifi...

  8. A Comparative Study of the Academic Stress and Depression among High School Girl and Boy Students

    Science.gov (United States)

    Khanehkeshi, Ali; Basavarajappa

    2012-01-01

    This paper compares the difference between boy and girl high school students of 1st grade to 3rd grade in academic stress and depression. Using a random stratified sampling 120 girl and boy students (60 girls and 60 boys) were selected from 1st grade (n = 40), 2nd grade (n = 40) and 3rd grade (n = 40) high school students. In this study gender and…

  9. Union of the potential academic science and leading specialized universities for provision of the underground space effective development

    Directory of Open Access Journals (Sweden)

    Vartanov Aleksandr Zarairovich

    2018-03-01

    Full Text Available Subject of research: providing of enabling environment through the use of underground subsurface resources for the purposes of civil construction is the main trend of the modern development of society. Large-scale development of the megacities subsoils and urban-industrial agglomerations faces significant threats caused by the risks of the consequences of techno-genic impact on the rock massif of urbanized areas, which requires the use of special construction geotechnologies and construction specialists of appropriate qualifications. Objectives: for efficient development of underground space, it is necessary to solve problems at the junction of construction and mining sciences with the formation of a modern system of scientific and methodological support for the training of personnel in this field. It is necessary to use the scientific, educational, innovative and intellectual potential of academic science and national research universities most fully and effectively. Materials and methods: proceeding from the necessity of convergence of science and education, with the goal of integrating efforts and improving the efficiency of scientific research and educational activities aimed at the Russian mining and construction industry effective development providing, the Moscow State University of Civil Engineering and the Institute for Complex Development of Mineral Resources of the Russian Academy of Sciences created the basic department “Development of Underground Spaces”. Results and conclusions: the conducted complex of organizational and management measures, taking into account the potential of leading scientific and educational schools, has made it possible to form the basis for the development of the competencies of future engineers-constructors and highly qualified personnel (masters, candidates and doctors of sciences in the field of construction geo-technologies, which will be responsible for effective and safe development of megacities

  10. Profile of senior high school students’ creative thinking skills on biology material in low, medium, and high academic perspective

    Science.gov (United States)

    Nurhamidah, D.; Masykuri, M.; Dwiastuti, S.

    2018-04-01

    Creative thinking is one of the most important skills of the 21st Century. Students are demanded not only be able to solve the cognitive problems but also to face the life problems. The aim of this study is to determine students’ creative thinking skills in biology class for XI grade of three Senior High Schools in Ngawi regency. The approach used to categorised the three schools into low, medium and high academic rank was a norm-referenced test. The study involved 92 students who completed a test. Guilford's alternative uses task was used to measure the level of students’ creative thinking skills. The results showed that in the school of high academic rank, 89,74% of students had low creative thinking skills and 10,25% of them are in moderate category. In the medium academic rank school, 85,71% of students had low creative thinking skills and 14,29% of them are moderate. In the school of low academic rank, 8% of students had very low creative thinking skills, 88% are low, and 4% are moderate. Based on the finding of the research, the creative thinking skills of students in the three school was categorised as low level, therefore the learning design should be developed which can improve the students’ creative thinking skills.

  11. Impact of a dual PharmD/MBA degree on graduates' academic performance, career opportunities, and earning potential.

    Science.gov (United States)

    Chumney, Elinor C G; Ragucci, Kelly R; Jones, Kathy J

    2008-04-15

    To evaluate the academic experience and satisfaction of students who completed a dual PharmD/MBA degree program and the program's long-term impact on the students' career choice and earning potential. GPAs, job placement, and starting job salaries were compared between graduates who completed the dual PharmD/MBA program and those who completed only the PharmD program. A satisfaction survey instrument was administered to 17 students who completed the dual PharmD/MBA degree program in May 2007. Data from a standardized job placement and starting salary survey instrument completed by all PharmD graduates were also obtained, as well as all students' final grade point averages (GPAs). GPAs, job placement, and starting job salaries were compared between graduates who had completed the dual PharmD/MBA program and those who had completed only the PharmD program. The graduating GPAs of dual-degree students were higher than those of both pharmacy (3.52 vs 3.41, p > 0.10) and business (3.82 vs. 3.68, p = 0.018) students not enrolled in the dual-degree program. Dual-degree students were slightly less likely to enter a residency (17% vs. 27%, p = 0.44) than other pharmacy graduates. Among those who elected not to pursue a residency, both mean starting salaries ($111,090 vs. $101,965) and mean total first-year compensation ($127,290 vs. $110,388) were significantly higher for dual-degree graduates compared to the PharmD graduates. Students enrolled in the dual-degree program did slightly better academically than students who completed only the MBA or PharmD programs and indicated a high level of satisfaction with the program. Dual-degree graduates reported increased career opportunities and were slated to earn significantly more during their first year in the workforce. These results affirm continuation of our program and make the case for support of similar programs across the nation.

  12. Examining gray matter structure associated with academic performance in a large sample of Chinese high school students

    OpenAIRE

    Song Wang; Ming Zhou; Taolin Chen; Xun Yang; Guangxiang Chen; Meiyun Wang; Qiyong Gong

    2017-01-01

    Achievement in school is crucial for students to be able to pursue successful careers and lead happy lives in the future. Although many psychological attributes have been found to be associated with academic performance, the neural substrates of academic performance remain largely unknown. Here, we investigated the relationship between brain structure and academic performance in a large sample of high school students via structural magnetic resonance imaging (S-MRI) using voxel-based morphome...

  13. The role of Effective Supervision on academic performance of Senior High Schools in Ghana

    Directory of Open Access Journals (Sweden)

    Vera Rosemary Ankoma-Sey

    2016-04-01

    Full Text Available In all facets of life, supervision has become a cross-cutting edge tool and a pivot around which performance revolves. There are widespread and on-going debates centred on the influence of effective supervision on academic performance in our academic institutions. This study examined the role of supervision on academic performance in Senior High Schools (SHS in Ghana. The study was based on the collegial model of educational management and the supervision model, Theory Y as proposed by Douglas McGregor. This study employed the descriptive research survey design. Through a questionnaire, data analysed was collected from 963 respondents who were purposively selected from randomised schools in each region comprising of headmasters, their assistants and heads of department of 155 SHSs across Ghana. The WAEC results (2006-2009 and 2011 of the sampled schools were analysed. Reliability coefficient of the questionnaire was Cronbach’s alpha (α = 0.826. The Statistical Product and Service Solutions (SPSS version 18 software was employed in the analyses of data using, mean, standard deviation, correlation and independent t-test. The study revealed that there was a positive weak significant relationship between supervision roles of heads and academic performance of students. Moreso, there was a positive weak significant relationship between gender of heads and their supervision roles. The study recommended that supervision should be intensified in SHS. Heads of SHS should be re-orientated in the new trends of supervision in schools.

  14. The role of chronotype, gender, test anxiety, and conscientiousness in academic achievement of high school students.

    Science.gov (United States)

    Rahafar, Arash; Maghsudloo, Mahdis; Farhangnia, Sajedeh; Vollmer, Christian; Randler, Christoph

    2016-01-01

    Previous findings have demonstrated that chronotype (morningness/intermediate/eveningness) is correlated with cognitive functions, that is, people show higher mental performance when they do a test at their preferred time of day. Empirical studies found a relationship between morningness and higher learning achievement at school and university. However, only a few of them controlled for other moderating and mediating variables. In this study, we included chronotype, gender, conscientiousness and test anxiety in a structural equation model (SEM) with grade point average (GPA) as academic achievement outcome. Participants were 158 high school students and results revealed that boys and girls differed in GPA and test anxiety significantly, with girls reporting better grades and higher test anxiety. Moreover, there was a positive correlation between conscientiousness and GPA (r = 0.17) and morningness (r = 0.29), respectively, and a negative correlation between conscientiousness and test anxiety (r = -0.22). The SEM demonstrated that gender was the strongest predictor of academic achievement. Lower test anxiety predicted higher GPA in girls but not in boys. Additionally, chronotype as moderator revealed a significant association between gender and GPA for evening types and intermediate types, while intermediate types showed a significant relationship between test anxiety and GPA. Our results suggest that gender is an essential predictor of academic achievement even stronger than low or absent test anxiety. Future studies are needed to explore how gender and chronotype act together in a longitudinal panel design and how chronotype is mediated by conscientiousness in the prediction of academic achievement.

  15. High school students with asthma: attitudes about school health, absenteeism, and its impact on academic achievement.

    Science.gov (United States)

    Krenitsky-Korn, Susan

    2011-01-01

    Asthma is the most frequent reason for absence from school; it accounts for one-third of all days of missed instruction, placing students at risk for academic failure and social isolation. This study compared high school students with asthma with those without asthma, and examined the relationship of their attitudes toward school health services, absenteeism, academic achievement, and the supposition that school nurse services play an essential part in the academic process. Surveys were completed by all students who participated in the study. Twenty-eight students with asthma reported levels of illness and school nurse support in an additional survey. Data revealed that students with asthma were absent more frequently, scored lower in mathematics, and participated less in school activities than their peers without asthma. Their level of illness did not predict the number of days absent, which was negatively correlated with achievement and positively correlated with students' permissive attitudes toward absenteeism. Findings indicate that school nurse interventions were sources of physical, social, emotional, and academic support.

  16. The Potential for Altmetrics to Measure Other Types of Impact in Scientific Production: Academic and Social Impact Dynamics in Social Media and Networks

    Science.gov (United States)

    Maricato, João de Melo; Vilan Filho, Jayme Leiro

    2018-01-01

    Introduction: Altmetrics is an area under construction, with a potential to study the impacts of academic products from social media data. It is believed that altmetrics can capture social and academic impacts, going beyond measures obtained using bibliometric and scientometric indicators. This research aimed to analyse aspects, characteristics…

  17. The hidden face of academic researches on classified highly pathogenic microorganisms.

    Science.gov (United States)

    Devaux, Christian A

    2015-01-01

    Highly pathogenic microorganisms and toxins are manipulated in academic laboratories for fundamental research purposes, diagnostics, drugs and vaccines development. Obviously, these infectious pathogens represent a potential risk for human and/or animal health and their accidental or intentional release (biosafety and biosecurity, respectively) is a major concern of governments. In the past decade, several incidents have occurred in laboratories and reported by media causing fear and raising a sense of suspicion against biologists. Some scientists have been ordered by US government to leave their laboratory for long periods of time following the occurrence of an incident involving infectious pathogens; in other cases laboratories have been shut down and universities have been forced to pay fines and incur a long-term ban on funding after gross negligence of biosafety/biosecurity procedures. Measures of criminal sanctions have also been taken to minimize the risk that such incidents can reoccur. As United States and many other countries, France has recently strengthened its legal measures for laboratories' protection. During the past two decades, France has adopted a series of specific restriction measures to better protect scientific discoveries with a potential economic/social impact and prevent their misuse by ill-intentioned people without affecting the progress of science through fundamental research. French legal regulations concerning scientific discoveries have progressively strengthened since 2001, until the publication in November 2011 of a decree concerning the "PPST" (for "Protection du Potentiel Scientifique et Technique de la nation", the protection of sensitive scientific data). Following the same logic of protection of sensitive scientific researches, regulations were also adopted in an order published in April 2012 concerning the biology and health field. The aim was to define the legal framework that precise the conditions for authorizing

  18. A longitudinal study of school belonging and academic motivation across high school.

    Science.gov (United States)

    Neel, Cari Gillen-O'; Fuligni, Andrew

    2013-01-01

    This longitudinal study examined how school belonging changes over the years of high school, and how it is associated with academic achievement and motivation. Students from Latin American, Asian, and European backgrounds participated (N = 572; age span = 13.94-19.15 years). In ninth grade, girls' school belonging was higher than boys'. Over the course of high school, however, girls' school belonging declined, whereas boys' remained stable. Within-person longitudinal analyses indicated that years in which students had higher school belonging were also years in which they felt that school was more enjoyable and more useful, above and beyond their actual level of achievement. Results highlight the importance of belonging for maintaining students' academic engagement during the teenage years. © 2012 The Authors. Child Development © 2012 Society for Research in Child Development, Inc.

  19. Academic Motivation Scale: adaptation and psychometric analyses for high school and college students

    Directory of Open Access Journals (Sweden)

    Stover JB

    2012-07-01

    Full Text Available Juliana Beatriz Stover,1 Guadalupe de la Iglesia,1 Antonio Ria,l Boubeta,2 Mercedes Fernández Liporace11Buenos Aires University and National Research Council (CONICET, Buenos Aires, Argentina; 2Santiago de Compostela University, Santiago de Compostela, SpainAbstract: The Academic Motivation Scale (AMS, supported in Self-Determination Theory, has been applied in recent decades as well in high school as in college education. Although several versions in Spanish are available, the underlying linguistic and cultural differences raise important issues when they are applied to Latin-American population. Consequently an adapted version of the AMS was developed, and its construct validity was analyzed in Argentine students. Results obtained on a sample that included 723 students from Buenos Aires (393 high school and 330 college students verified adequate psychometric properties in this new version, solving some controversies regarded to its dimensionality.Keywords: Academic Motivation, self-determination, confirmatory factor analysis, internal consistency

  20. Reliability and validity of academic motivation scale for sports high school students’

    Directory of Open Access Journals (Sweden)

    Haslofça Fehime

    2016-01-01

    Full Text Available This study was designed to test validity and reliability of Academic Motivation Scale (AMS for sports high school students. The research conducted with 357 volunteered girls (n=117 and boys (n=240. Confirmatory factor analysis showed that Chi square (χ2, degrees of freedom (df and χ2/df ratio were 1102.90, 341 and 3.234, respectively. Goodness of Fit Index, Comparative Fit Index, Non-normed Fit Index and Incremental Fit Index were between 0.92-0.95. Additionally, Adjusted Goodness of Fit Index, An Average Errors Square Root and Root Mean Square Error of Approximation were 0.88, 0.070 and 0.079, respectively. Subscale reliability coefficients were between 0.77 and 0.86. Test-retest correlations of AMS were found between 0.79 and 0.91. Results showed that scale was suitable for determination of sports high school students’ academicals motivation levels.

  1. Food for thought? Potential conflicts of interest in academic experts advising government and charities on dietary policies

    Directory of Open Access Journals (Sweden)

    Alex Newton

    2016-08-01

    Full Text Available Abstract Background A conflict of interest (CoI can occur between public duty and private interest, in which a public official’s private-capacity interest could improperly influence the performance of their official duties and responsibilities. The most tangible and commonly considered CoI are financial. However, CoI can also arise due to other types of influence including interpersonal relationships, career progression, or ideology. CoI thus exist in academia, business, government and non-governmental organisations. However, public knowledge of CoI is currently limited due to a lack of information. The mechanisms of managing potential conflicts of interest also remain unclear due to a lack of guidelines. We therefore examined the independence of academic experts and how well potential CoI are identified and addressed in four government and non-governmental organisations in the UK responsible for the development of food policy. Methods Policy analysis. We developed an analytical framework to explore CoI in high-level UK food policy advice, using four case studies. Two government policy-making bodies: Department of Health ‘Obesity Review Group’ (ORG, ‘Scientific Advisory Committee on Nutrition’ (SACN and two charities: ‘Action on Sugar’ (AoS, & ‘Heart of Mersey’ (HoM. Information was obtained from publicly available sources and declarations. We developed a five point ordinal scale based upon the ideology of the Nolan Principles of Public Life. Group members were individually categorised on the ordinal ConScale from “0”, (complete independence from the food and drink industry to “4”, (employed by the food and drink industry or a representative organisation. Results CoI involving various industries have long been evident in policy making, academia and clinical practice. Suggested approaches for managing CoI could be categorised as “deny”, “describe”, or “diminish”. Declared CoI were common in the ORG and SACN

  2. Engagement Patterns of High and Low Academic Performers on Facebook Anatomy Pages

    OpenAIRE

    Jaffar, Akram Abood; Eladl, Mohamed Ahmed

    2016-01-01

    Only a few studies have investigated how students use and respond to social networks in the educational context as opposed to social use. In this study, the engagement of medical students on anatomy Facebook pages was evaluated in view of their academic performance. High performers contributed to most of the engagements. They also had a particular preference for higher levels of engagement. Although the students were deeply involved in the educational element of the pages, they continued to a...

  3. A Comparative Analysis of Social Media Usage and Academic Performance in Public and Private Senior High Schools

    Science.gov (United States)

    Mingle, Jeffrey; Adams, Musah; Adjei, E. A.

    2016-01-01

    The study comparatively analyzed social media usage and academic performance in public and private senior high schools. The issue of social media and academic performance has been a very debatable topic with regard to its effect. This study further explores the relation between private and public schools in relation to social media use and…

  4. Academic Performance, Course Completion Rates, and Student Perception of the Quality and Frequency of Interaction in a Virtual High School

    Science.gov (United States)

    Hawkins, Abigail; Graham, Charles R.; Sudweeks, Richard R.; Barbour, Michael K.

    2013-01-01

    This study examined the relationship between students' perceptions of teacher-student interaction and academic performance at an asynchronous, self-paced, statewide virtual high school. Academic performance was measured by grade awarded and course completion. There were 2269 students who responded to an 18-item survey designed to measure student…

  5. Factorial Invariance of the Academic Amotivation Inventory (AAI) across Gender and Grade in a Sample of Canadian High School Students

    Science.gov (United States)

    Green-Demers, Isabelle; Legault, Lisa; Pelletier, Daniel; Pelletier, Luc G.

    2008-01-01

    Motivation deficits are common in high school and constitute a significant problem for both students and teachers. The Academic Amotivation Inventory (AAI) was developed to measure the multidimensional nature of the academic amotivation construct (Legault, Green-Demers, & Pelletier, 2006). The present project further examined the consistency…

  6. Bullshit in Academic Writing: A Protocol Analysis of a High School Senior's Process of Interpreting "Much Ado about Nothing"

    Science.gov (United States)

    Smagorinsky, Peter; Daigle, Elizabeth Anne; O'Donnell-Allen, Cindy; Bynum, Susan

    2010-01-01

    This article reports a study of one high school senior's process of academic bullshitting as she wrote an analytic essay interpreting Shakespeare's "Much Ado about Nothing." The construct of bullshit has received little scholarly attention; although it is known as a common phenomenon in academic speech and writing, it has rarely been the subject…

  7. Reaching their potential: Perceived impact of a collaborative academic-clinical partnership programme for early career nurses in New Zealand.

    Science.gov (United States)

    McKillop, Ann; Doughty, Lesley; Atherfold, Cheryl; Shaw, Kathy

    2016-01-01

    The dynamic nature of healthcare ensures that early career nurses enter an uncertain and complex world of practice and consequently require support to develop their practice, build confidence and reach their potential. The New Zealand Nurse Entry to Practice programme for registered nurses in their first year of practice has been operating since 2005 to enable safe and confident practice, improve the quality of care, and positively impact on recruitment and retention. This academic and clinical programme was offered as a partnership between a university and a clinical provider with postgraduate academic credits gained. The aim of this study was to explore the perceived impact of postgraduate university education for early career nurses in one regional health area of New Zealand. Participants were registered nurses who had completed the early career nurse programme and their clinical preceptors. The research was conducted via an online survey of 248 nurses and three focus groups to explore how the programme was experienced and its impact on knowledge and practice. Early career nurses and their preceptors found that the programme enables improved knowledge and skills of patient assessment, application of critical thinking to clinical practice, perceived improvement in patient care delivery and outcomes, enhanced interprofessional communication and knowledge sharing, and had a positive impact on professional awareness and career planning. This clinical-academic partnership positively impacted on the clinical practice and transition experience of early career nurses and was closely aligned to an organization's strategic plan for nursing workforce development. Copyright © 2015 Elsevier Ltd. All rights reserved.

  8. Constant potential high-voltage generator

    International Nuclear Information System (INIS)

    Resnick, T.A.; Dupuis, W.A.; Palermo, T.

    1980-01-01

    An X-ray tube voltage generator with automatic stabilization circuitry is disclosed. The generator includes a source of pulsating direct current voltage such as from a rectified 3 phase transformer. This pulsating voltage is supplied to the cathode and anode of an X-ray tube and forms an accelerating potential for electrons within that tube. The accelerating potential is stabilized with a feedback signal which is provided by a feedback network. The network includes an error signal generator which compares an instantaneous accelerating potential with a preferred reference accelerating potential and generates an error function. This error function is transmitted to a control tube grid which in turn causes the voltage difference between X-ray tube cathode and anode to stabilize and thereby reduce the error function. In this way stabilized accelerating potentials are realized and uniform X-ray energy distributions produced. (Auth.)

  9. Factors influencing academic library users' intention to use mobile systems:A comparison of current users and potential adopters

    Institute of Scientific and Technical Information of China (English)

    Haijuan YANG; Sisi GUI

    2014-01-01

    Purpose:The study intends to examine the factors influencing the behavioral intention to use academic libraries' mobile systems from the perspective of current users and potential adopters,respectively.Design/methodology/approach:Our study investigates the mobile library system's acceptance by using a context-specific extension of the theory of reasoned action (TRA) and the technology acceptance model (TAM),which includes such factors as mobile self-efficacy,personal innovativeness and perceived playfulness.Structural equation modeling was used to test the validity of the proposed model based on the empirical data which was collected from 210 questionnaire survey participants.Findings:The result shows that 1) for both current users and potential adopters,attitude toward use and subjective norm both have a significant and positive impact on behavioral intention to use;2) perceived usefulness and perceived ease of use are significantly correlated to potential adopters' attitude toward use whereas perceived usefulness and perceived playfulness are significantly related to current users' attitude toward use;3) as for the comparison between the two groups of users,personal innovativeness not only affects perceived usefulness of both current users and potential adopters,but also affects potential adopters' perceived playfulness positively.Mobile self-efficacy has a significant effect on perceived ease of use for both types of users.Research limitations:Although the sample size met the basic statistics requirements for the social research,the participants were mainly college students,and other mobile system users like faculty members and researchers were not investigated.In addition,some influencing factors,such as information quality,system quality and service quality were not considered in the research model.Practical implications:This study reveals main factors which influence both current users and potential adopters' intention to use the mobile system

  10. Factors influencing academic library users’ intention to use mobile systems: A comparison of current users and potential adopters

    Institute of Scientific and Technical Information of China (English)

    Haijuan; YANG; Sisi; GUI

    2014-01-01

    Purpose: The study intends to examine the factors influencing the behavioral intention to use academic libraries’ mobile systems from the perspective of current users and potential adopters, respectively. Design/methodology/approach: Our study investigates the mobile library system’s acceptance by using a context-specific extension of the theory of reasoned action(TRA) and the technology acceptance model(TAM), which includes such factors as mobile self-efficacy, personal innovativeness and perceived playfulness. Structural equation modeling was used to test the validity of the proposed model based on the empirical data which was collected from 210 questionnaire survey participants.Findings: The result shows that 1) for both current users and potential adopters, attitude toward use and subjective norm both have a significant and positive impact on behavioral intention to use; 2) perceived usefulness and perceived ease of use are significantly correlated to potential adopters’ attitude toward use whereas perceived usefulness and perceived playfulness are significantly related to current users’ attitude toward use; 3) as for the comparison between the two groups of users, personal innovativeness not only affects perceived usefulness of both current users and potential adopters, but also affects potential adopters’ perceived playfulness positively. Mobile self-efficacy has a significant effect on perceived ease of use for both types of users.Research limitations: Although the sample size met the basic statistics requirements for the social research, the participants were mainly college students, and other mobile system users like faculty members and researchers were not investigated. In addition, some influencing factors, such as information quality, system quality and service quality were not considered in the research model.Practical implications: This study reveals main factors which influence both current users and potential adopters’ intention to use

  11. HIGH ENERGY PHYSICS POTENTIAL AT MUON COLLIDERS

    International Nuclear Information System (INIS)

    PARSA, Z.

    2000-01-01

    In this paper, high energy physics possibilities and future colliders are discussed. The μ + μ - collider and experiments with high intensity muon beams as the stepping phase towards building Higher Energy Muon Colliders (HEMC) are briefly reviewed and encouraged

  12. Academic Motivation Scale: adaptation and psychometric analyses for high school and college students.

    Science.gov (United States)

    Stover, Juliana Beatriz; de la Iglesia, Guadalupe; Boubeta, Antonio Rial; Liporace, Mercedes Fernández

    2012-01-01

    The Academic Motivation Scale (AMS), supported in Self-Determination Theory, has been applied in recent decades as well in high school as in college education. Although several versions in Spanish are available, the underlying linguistic and cultural differences raise important issues when they are applied to Latin-American population. Consequently an adapted version of the AMS was developed, and its construct validity was analyzed in Argentine students. Results obtained on a sample that included 723 students from Buenos Aires (393 high school and 330 college students) verified adequate psychometric properties in this new version, solving some controversies regarded to its dimensionality.

  13. How Do You Measure Success? Academic Wholism Bridges the Gap between High School and College

    Science.gov (United States)

    Giuliano, Barbara A.; Sullivan, Judith L.

    2004-01-01

    We conducted a research case study to ascertain the effect of a bridge program on fostering self-growth and academic readiness for college. Academic wholism provided the vehicle to promote self-awareness, self-motivation, and academic maturity. The rippling effect of this program extended beyond academics to the personal level. (Contains 2…

  14. Correlation Among Students’ Family Background, Academic Performance in Junior High School, and Senior High School Tracking in Taiwan

    Directory of Open Access Journals (Sweden)

    Ming-Fu Huang

    2014-12-01

    Full Text Available There were numerous previous studies on educational tracking. However, most of the data adopted in these studies were collected a decade ago, involving sample population 20-64 years of age. Among them, many elderly samples had undergone senior high school tracking in the early years. The present study used the data of students and parents from the 3rd wave (2005 of the Taiwan Education Panel Survey (TEPS. A path analysis was conducted to investigate the inequality of opportunities involved in the influence of student family background on educational tracking at the senior high school stage. The results show: although the overall percentage of junior high school graduates entering advanced levels was approximately 100% and almost all students of different family backgrounds entered advanced levels, the most crucial factor among those affecting educational tracking of senior high school stage was students’ academic performance during junior high school. Students with higher family socioeconomic status and fewer siblings showed better academic performance in junior high schools, and consequently had higher possibilities of entering public senior high schools leading to a more promising future. This indicates that though the inequality in the quantity of opportunities approached 0, the inequality in the quality of opportunities still remained, which fails to support the hypothesis of the maximally maintained inequality of educational opportunity (MMI; however, the result supports the hypothesis of the effectively maintained inequality of educational opportunity (EMI.

  15. The effects of modeling instruction on high school physics academic achievement

    Science.gov (United States)

    Wright, Tiffanie L.

    The purpose of this study was to explore whether Modeling Instruction, compared to traditional lecturing, is an effective instructional method to promote academic achievement in selected high school physics classes at a rural middle Tennessee high school. This study used an ex post facto , quasi-experimental research methodology. The independent variables in this study were the instructional methods of teaching. The treatment variable was Modeling Instruction and the control variable was traditional lecture instruction. The Treatment Group consisted of participants in Physical World Concepts who received Modeling Instruction. The Control Group consisted of participants in Physical Science who received traditional lecture instruction. The dependent variable was gains scores on the Force Concepts Inventory (FCI). The participants for this study were 133 students each in both the Treatment and Control Groups (n = 266), who attended a public, high school in rural middle Tennessee. The participants were administered the Force Concepts Inventory (FCI) prior to being taught the mechanics of physics. The FCI data were entered into the computer-based Statistical Package for the Social Science (SPSS). Two independent samples t-tests were conducted to answer the research questions. There was a statistically significant difference between the treatment and control groups concerning the instructional method. Modeling Instructional methods were found to be effective in increasing the academic achievement of students in high school physics. There was no statistically significant difference between FCI gains scores for gender. Gender was found to have no effect on the academic achievement of students in high school physics classes. However, even though there was not a statistically significant difference, female students' gains scores were higher than male students' gains scores when Modeling Instructional methods of teaching were used. Based on these findings, it is recommended

  16. Potentialities of high temperature reactors (HTR)

    International Nuclear Information System (INIS)

    Hittner, D.

    2001-01-01

    This articles reviews the assets of high temperature reactors concerning the amount of radioactive wastes produced. 2 factors favors HTR-type reactors: high thermal efficiency and high burn-ups. The high thermal efficiency is due to the high temperature of the coolant, in the case of the GT-MHR project (a cooperation between General Atomic, Minatom, Framatome, and Fuji Electric) designed to burn Russian military plutonium, the expected yield will be 47% with an outlet helium temperature of 850 Celsius degrees. The high temperature of the coolant favors a lot of uses of the heat generated by the reactor: urban heating, chemical processes, or desalination of sea water.The use of a HTR-type reactor in a co-generating way can value up to 90% of the energy produced. The high burn-up is due to the technology of HTR-type fuel that is based on encapsulation of fuel balls with heat-resisting materials. The nuclear fuel of Fort-Saint-Vrain unit (Usa) has reached values of burn-ups from 100.000 to 120.000 MWj/t. It is shown that the quantity of unloaded spent fuel can be divided by 4 for the same amount of electricity produced, in the case of the GT-MHR project in comparison with a light water reactor. (A.C.)

  17. An Audit of Repeat Testing at an Academic Medical Center: Consistency of Order Patterns With Recommendations and Potential Cost Savings.

    Science.gov (United States)

    Hueth, Kyle D; Jackson, Brian R; Schmidt, Robert L

    2018-05-31

    To evaluate the prevalence of potentially unnecessary repeat testing (PURT) and the associated economic burden for an inpatient population at a large academic medical facility. We evaluated all inpatient test orders during 2016 for PURT by comparing the intertest times to published recommendations. Potential cost savings were estimated using the Centers for Medicare & Medicaid Services maximum allowable reimbursement rate. We evaluated result positivity as a determinant of PURT through logistic regression. Of the evaluated 4,242 repeated target tests, 1,849 (44%) were identified as PURT, representing an estimated cost-savings opportunity of $37,376. Collectively, the association of result positivity and PURT was statistically significant (relative risk, 1.2; 95% confidence interval, 1.1-1.3; P < .001). PURT contributes to unnecessary health care costs. We found that a small percentage of providers account for the majority of PURT, and PURT is positively associated with result positivity.

  18. Factors that contribute to Hispanic English Language Learners' high academic performance in high school science in the Rio Grande Valley of Texas: A multicase study

    Science.gov (United States)

    Elizondo, Antonio

    The purpose of this multicase study was to discover factors that contribute to Hispanic English language learners' (ELL) high academic performance in high school science in the Rio Grande Valley of Texas. Participants were high school seniors enrolled in college-level classes who had scored commended on the science exit-level Texas Assessment of Knowledge and Skills and ranked toward the top of their class. One student from each of four different high schools in south Texas were selected to participate. Schools identified students meeting the participant criteria and provided consent documents. In this qualitative research study, students were interviewed on three different dates. Administrators and science teachers were also interviewed for triangulation. Significant findings showed that intrinsic qualities were mainly responsible for factors contributing to high academic performance. Hispanic ELL students need meaningful responsibilities to internalize self-esteem and self-efficacy to realize high academic performance. Self-motivation, a contributing factor, provides students with a positive outlook on high academic performance and the ability to defer more immediate undermining rewards. Students expect to contribute to society by helping others. This helps their self-esteem as well as their self-worth and supports high academic performance. Parental and teacher support are critical for high academic performance. Low socioeconomic status alone is not a causal factor for poor academic performance. School administrations should assign willing and enthusiastic teachers as mentors to target students and provide skills to parents that promote, inspire, and motivate students' intrinsic qualities. Future studies should examine different leadership styles that maximize teachers' ability to influence students' high academic performance. Finally, students should be given guidance in setting career goals and demonstrating that high academic achievement is attainable and

  19. Family Background, School-Age Trajectories of Activity Participation, and Academic Achievement at the Start of High School

    Science.gov (United States)

    Crosnoe, Robert; Smith, Chelsea; Leventhal, Tama

    2015-01-01

    Applying latent class and regression techniques to data from the NICHD Study of Early Child Care and Youth Development (n = 997), this study explored the potential academic advantages of time spent in out-of-school activities. Of particular interest was how these potential advantages played out in relation to the timing and duration of activity…

  20. Needs Assessment for Research Use of High-Throughput Sequencing at a Large Academic Medical Center.

    Directory of Open Access Journals (Sweden)

    Albert Geskin

    Full Text Available Next Generation Sequencing (NGS methods are driving profound changes in biomedical research, with a growing impact on patient care. Many academic medical centers are evaluating potential models to prepare for the rapid increase in NGS information needs. This study sought to investigate (1 how and where sequencing data is generated and analyzed, (2 research objectives and goals for NGS, (3 workforce capacity and unmet needs, (4 storage capacity and unmet needs, (5 available and anticipated funding resources, and (6 future challenges. As a precursor to informed decision making at our institution, we undertook a systematic needs assessment of investigators using survey methods. We recruited 331 investigators from over 60 departments and divisions at the University of Pittsburgh Schools of Health Sciences and had 140 respondents, or a 42% response rate. Results suggest that both sequencing and analysis bottlenecks currently exist. Significant educational needs were identified, including both investigator-focused needs, such as selection of NGS methods suitable for specific research objectives, and program-focused needs, such as support for training an analytic workforce. The absence of centralized infrastructure was identified as an important institutional gap. Key principles for organizations managing this change were formulated based on the survey responses. This needs assessment provides an in-depth case study which may be useful to other academic medical centers as they identify and plan for future needs.

  1. Engagement Patterns of High and Low Academic Performers on Facebook Anatomy Pages

    Directory of Open Access Journals (Sweden)

    Akram Abood Jaffar

    2016-01-01

    Full Text Available Only a few studies have investigated how students use and respond to social networks in the educational context as opposed to social use. In this study, the engagement of medical students on anatomy Facebook pages was evaluated in view of their academic performance. High performers contributed to most of the engagements. They also had a particular preference for higher levels of engagement. Although the students were deeply involved in the educational element of the pages, they continued to appreciate the inherent social element. The profound engagement of the high performers indicated a consistency between Facebook use in the educational context and better student performance. At the same time, the deeper engagement of high performers refutes the opinion that Facebook use is a distractor. Instead, it supports the notion that Facebook could be a suitable platform to engage students in an educational context.

  2. Engagement Patterns of High and Low Academic Performers on Facebook Anatomy Pages.

    Science.gov (United States)

    Jaffar, Akram Abood; Eladl, Mohamed Ahmed

    2016-01-01

    Only a few studies have investigated how students use and respond to social networks in the educational context as opposed to social use. In this study, the engagement of medical students on anatomy Facebook pages was evaluated in view of their academic performance. High performers contributed to most of the engagements. They also had a particular preference for higher levels of engagement. Although the students were deeply involved in the educational element of the pages, they continued to appreciate the inherent social element. The profound engagement of the high performers indicated a consistency between Facebook use in the educational context and better student performance. At the same time, the deeper engagement of high performers refutes the opinion that Facebook use is a distractor. Instead, it supports the notion that Facebook could be a suitable platform to engage students in an educational context.

  3. STEM Education-An Exploration of Its Impact on Female Academic Success in High School

    Science.gov (United States)

    Ybarra, Michael E.

    The 21st century presents many new career opportunities and choices for women today. However, over the past decade, there has been a growing concern that there will not be enough students trained in Science, Technology, Engineering, and Math (STEM) to fill jobs in the United States. Current research reveals that there will be a need for highly skilled workers in the STEM industries, along with the opportunities to earn higher wages. With these opportunities ahead, it is paramount that secondary schools prepare not only their male students, but also their female students for these lucrative STEM careers. The purpose of this study was to investigate to what degree female high school students enrolled in a STEM academy, and who may play sports, experience academic differences in college preparatory math and science courses, and in the math and science portions of the California Standards Test. Academic differences shall be defined as differences in grade point averages. A comparison will be made of female students who take similar classes and play sports, but who are not enrolled in a STEM academy program. This comparison will then incorporate a quantitative non-experimental research design, along with a chi-square test.

  4. Developing Effective Earthquake Risk Reduction Strategies: The Potential Role of Academic Institutions in Lebanon

    Science.gov (United States)

    Baytiyeh, Hoda

    2015-01-01

    Lebanon faces the risk of powerful earthquakes with potentially devastating effects. However, the Lebanese people in general have not yet recognized this risk, as current educational programs and government officials have failed to inform them about it. This article discusses the essential role that Lebanese institutions of higher education should…

  5. Faculty Sense of Academic Optimism and Its Relationship to Students' Achievement in Well Performing High Schools

    Science.gov (United States)

    Cromartie, Michael Tyrone

    2013-01-01

    The aim of this study was to determine the organizational characteristics and behaviors that contribute to sustaining a culture of academic optimism as a mechanism of student achievement. While there is a developing research base identifying both the individual elements of academic optimism as well as the academic optimism construct itself as…

  6. The Role of Academic Motivation in High School Students’ Current and Lifetime Alcohol Consumption: Adopting a Self-Determination Theory Perspective*

    Science.gov (United States)

    Wormington, Stephanie V.; Anderson, Kristen G.; Corpus, Jennifer Henderlong

    2011-01-01

    Objective: The current study investigated the relationship between different types of academic motives—specifically, intrinsic motivation, introjected regulation, and external regulation—and high school students' current and lifetime alcohol consumption. Method: One thousand sixty-seven high school students completed measures of academic motivation, other school-related factors, and lifetime and current alcohol consumption. Results: Using structural equation modeling, different types of motivation and school-related factors were differentially related to student drinking. Specifically, intrinsic motivation was negatively related to lifetime and current alcohol consumption. External regulation, on the other hand, was positively associated with current drinking. Grade point average was the only school-related factor related to student alcohol use. Conclusions: These findings suggest that motivation is an important construct to consider in predicting students’ alcohol use, even when other more commonly studied educational variables are considered. In addition, it supports the adoption of a motivation framework that considers different types of motivation in understanding the relationship between academic motivation and alcohol use. Suggestions for incorporating the self-determination model of motivation into studies of alcohol and substance use, as well as potential impacts on intervention efforts, are discussed. In particular, it may be important to foster only certain types of motivation, rather than all types of academically-focused motives, in efforts to deter alcohol use. PMID:22051210

  7. The role of academic motivation in high school students' current and lifetime alcohol consumption: adopting a self-determination theory perspective.

    Science.gov (United States)

    Wormington, Stephanie V; Anderson, Kristen G; Corpus, Jennifer Henderlong

    2011-11-01

    The current study investigated the relationship between different types of academic motives-specifically, intrinsic motivation, introjected regulation, and external regulation-and high school students' current and lifetime alcohol consumption. One thousand sixty-seven high school students completed measures of academic motivation, other school-related factors, and lifetime and current alcohol consumption. Using structural equation modeling, different types of motivation and school-related factors were differentially related to student drinking. Specifically, intrinsic motivation was negatively related to lifetime and current alcohol consumption. External regulation, on the other hand, was positively associated with current drinking. Grade point average was the only school-related factor related to student alcohol use. These findings suggest that motivation is an important construct to consider in predicting students' alcohol use, even when other more commonly studied educational variables are considered. In addition, it supports the adoption of a motivation framework that considers different types of motivation in understanding the relationship between academic motivation and alcohol use. Suggestions for incorporating the self-determination model of motivation into studies of alcohol and substance use, as well as potential impacts on intervention efforts, are discussed. In particular, it may be important to foster only certain types of motivation, rather than all types of academically-focused motives, in efforts to deter alcohol use.

  8. Determining standard of academic potential based on the Indonesian Scholastic Aptitude Test (TBS benchmark

    Directory of Open Access Journals (Sweden)

    Idwin Irma Krisna

    2016-12-01

    Full Text Available The aim of this article was to classify The Indonesian Scholastic Aptitude Test or Tes Bakat Skolastik (TBS results for each subtest and describe scholastic aptitudes in each subtest. The subject of this study was 36,125 prospective students who took the selection test in some universities. Data analysis began by estimating  testees’ ability using the Item Response Theory, and benchmarking process using the scale anchoring method applying ASP.net web server technology. The results of this research are four benchmarks (based on cutoff scores on each subtest, characters which differentiate potential for each benchmark, and measurement error on each benchmark. The items netted give a description of the scholastic aptitude potential clearly and indicate uniqueness so that it could distinguish difference in potential between a lower bench and a higher bench. At a higher bench, a higher level of reasoning power is required in analyzing and processing needed information so that the individual concerned could do the problem solving with the right solution. The items netted at a lower bench in the three subtests tend to be few so that the error of measurement at such a bench still tends to be higher compared to that at a higher bench.

  9. The Relationship between Family Functioning and Academic Achievement in Female High School Students of Isfahan, Iran, in 2013-2014.

    Science.gov (United States)

    Rezaei-Dehaghani, Abdollah; Keshvari, Mahrokh; Paki, Somayeh

    2018-01-01

    Nowadays, the most important problem of the educational system is the vast spread of school failure. Therefore, detection of the factors leading to or preventing students' academic achievement is of utmost importance. Family function is considered to be a critical component of academic success. This study aimed to investigate the relationship between family functioning and academic achievement in high school female students in Isfahan. This descriptive correlational study was conducted through random sampling among 237 female high school students in Isfahan during school year 2013-2014. Data were collected by participants' personal characteristics and Bloom family function questionnaires. To analyze the data, descriptive statistics (mean and standard deviation) and inferential statistics (Pearson correlation and linear regression analysis) were adopted and computed using SPSS software. The results showed a significant correlation between family function (except lack of independence) and students' academic achievement ( p family function dimensions, expressiveness ( β = 0.235, p family socialization ( β = 0.219, p = 0.001), and cohesion ( β = 0.211, p = 0.001) were more reliable predictors of academic achievement. The results of this study showed that students' academic achievement is highly correlated with the performance of their families. Therefore, to improve students' educational status in cultural and educational programs, which are specified for them, family function centered plans should be at the heart of attention.

  10. The relationship between family functioning and academic achievement in female high school students of Isfahan, Iran, in 2013–2014

    Directory of Open Access Journals (Sweden)

    Abdollah Rezaei-Dehaghani

    2018-01-01

    Full Text Available Background: Nowadays, the most important problem of the educational system is the vast spread of school failure. Therefore, detection of the factors leading to or preventing students' academic achievement is of utmost importance. Family function is considered to be a critical component of academic success. This study aimed to investigate the relationship between family functioning and academic achievement in high school female students in Isfahan. Materials and Methods: This descriptive correlational study was conducted through random sampling among 237 female high school students in Isfahan during school year 2013-2014. Data were collected by participants' personal characteristics and Bloom family function questionnaires. To analyze the data, descriptive statistics (mean and standard deviation and inferential statistics (Pearson correlation and linear regression analysis were adopted and computed using SPSS software. Results: The results showed a significant correlation between family function (except lack of independence and students' academic achievement (p < 0.05. Further, among family function dimensions, expressiveness (β = 0.235, p < 0.001, family socialization (β = 0.219, p = 0.001, and cohesion (β = 0.211, p = 0.001 were more reliable predictors of academic achievement. Conclusions: The results of this study showed that students' academic achievement is highly correlated with the performance of their families. Therefore, to improve students' educational status in cultural and educational programs, which are specified for them, family function centered plans should be at the heart of attention.

  11. Schooling Background and Academic Academic Achievement of Agricultural Students

    Directory of Open Access Journals (Sweden)

    N. Jayakumar

    2016-05-01

    Full Text Available In our society academic achievement is considered as a key criterion to judge one’s total potentiality and capability. Academic achievement is seen as a students’ grade point averages in many academic settings. Academic achievement has become an index of students’ future in this highly competitive world and Agricultural education is no exception.  Hence it becomes necessary to find out the factors that determine better academic performance. In this context the present study had been carried out to find out the possible relationship between schooling background and academic achievement of agriculture students. The students admitted in Adhiparasakthi Agricultural College, Kalavai, Vellore between 1999 and 2009 formed the subjects of the study. Findings of the study revealed that determinants like gender, type of school and stream of education had a significant role in the academic achievement of the students. Medium of instruction in HSC did influence the academic achievement but not significantly. It was also found that students who performed well in their HSC did perform well in their undergraduate programme also. This confirms that previous educational outcomes are the most important indicators of student’s future achievement and schooling background has a significant role in academic achievement of students.

  12. High work ability in the scientific activity of older and experienced academics.

    Science.gov (United States)

    Kristjuhan, Ulo; Taidre, Erika

    2012-01-01

    At present the health of people in theirs 60s is the same as in theirs 50s around fifty years ago. Using older academics is a topical problem for universities in remaining efficient. Data regarding academics' scientific productivity at universities were collected and questionnaires compiled in the Faculty of Economics and Business Administration of Tallinn University of Technology in Estonia. Studies showed that the productivity of academics at university increases as they grow older (into their 60s). These academics are valuable to the university. The choice of academics should be made according to the candidates' knowledge and ability to work.

  13. What Makes a Good Program? A Case Study of a School Admitting High Academic Achievers

    Directory of Open Access Journals (Sweden)

    Ching Man Lam

    2008-01-01

    Full Text Available This paper reports the results of a qualitative study that explored the administration and implementation of the Tier 1 Program (Secondary 1 Curriculum of the Project P.A.T.H.S. The case study method was used to explore perceptions of the teachers and the project coordinator of program effectiveness, and to identify various factors for program success. A school admitting high academic achievers was selected, and site visits, as well as individual and focus group interviews, were conducted with the program coordinator, social worker, and course teachers. The results suggested that clear vision and program goals, high quality of curriculum, helpful leadership, positive teacher attitude, and strong administrative support are factors for program success. Analyzing the data enables the researchers to understand the characteristics of a successful program as well as the interplay among factors for producing success.

  14. Exploring rural high school learners' experience of mathematics anxiety in academic settings

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    Dipane Hlalele

    2012-01-01

    Full Text Available The purpose of the study was to explore rural high school learners' experience of mathematics anxiety in academic settings. Mathematics anxiety has been found to have an adverse effect on confidence, motivation and achievement. This quantitative study is exploratory and descriptive in nature. The participants were 403 learners doing mathematics in 18 rural schools in the Free State province of South Africa. Participants completed a 20-item questionnaire and 373 (92.5% questionnaires were found to contain valid responses and were analysed by a professional statistician at the University of the Free State using the Statistical Package for the Social Sciences (SPSS, Version 17.0. The questionnaire was testedfor reliability using the Cronbach alpha coefficient and was found to have a reliability score of .841, indicating an acceptable reliability coefficient. Findings reveal that all learners sometimes, often, or always experience mathematics anxiety in academic settings. It is therefore important for teachers and authorities in education to observe its prevalence and to implement strategies toward the alleviation of the effects ofmathematics anxiety.

  15. Double nursing degree: potentialities and challenges of an international student academic experience.

    Science.gov (United States)

    Nora, Carlise Rigon Dalla; Schaefer, Rafaela; Schveitzer, Mariana Cabral; Zoboli, Elma Lourdes Campos Pavone; Vieira, Margarida Maria

    2018-01-01

    Objective To share the experience of a Double Nursing degree promoted between the Nursing School of the Universidade de São Paulo and the Health Sciences Institute of the Universidade Católica Portuguesa, reflecting on the potentialities and challenges of this opportunity for graduate students. Method This is an experience report presented in chronological order and of a descriptive nature. The double degree in Nursing was accomplished over a period of 6 months in a different institution from the institution of origin. Results Among the activities developed during the Double Degree are: participating in examining boards, congresses, seminars, courses, meetings, lectures, colloquium, classes, research groups and technical visits to health services. A table presents and describes the main benefits of the experience experienced by the authors. Conclusion When well-planned and well-developed, a double degree can promote personal, cultural and professional development of the students, favoring internationalization and contributing to the qualification of graduate programs.

  16. School Engagement, Risky Peers, and Student-Teacher Relationships as Mediators of School Violence in Taiwanese Vocational versus Academically Oriented High Schools

    Science.gov (United States)

    Chen, Ji-Kang; Astor, Ron Avi

    2011-01-01

    Educational tracking based on academic ability accounts for different school dynamics between vocational versus academically-oriented high schools in Taiwan. Many educational practitioners predict that the settings of vocational schools and academic schools mediate school violence in different ways. Alternatively, some researchers argue the actual…

  17. High Involvement Mothers of High Achieving Children: Potential Theoretical Explanations

    Science.gov (United States)

    Hunsaker, Scott L.

    2013-01-01

    In American society, parents who have high aspirations for the achievements of their children are often viewed by others in a negative light. Various pejoratives such as "pushy parent," "helicopter parent," "stage mother," and "soccer mom" are used in the common vernacular to describe these parents. Multiple…

  18. ACADEMIC TRAINING: Probing nature with high precision; particle traps, laser spectroscopy and optical combs

    CERN Multimedia

    Françoise Benz

    2002-01-01

    17, 18, 19 June LECTURE SERIES from 11.00 to 12.00 hrs - Auditorium, bldg. 500 Probing nature with high precision; particle traps, laser spectroscopy and optical combs by G. GABRIELSE / Harvard University, USA Experiments with atomic energy scales probe nature and its symmetries with exquisite precision. Particle traps allow the manipulation of single charged particles for months at a time, allow the most accurate comparison of theory and experiment, and promise to allow better measurement of fundamental quantities like the fine structure constant. Ions and atoms can be probed with lasers that are phase locked to microwave frequency standards via optical combs, thus calibrating optical sources in terms of the official cesium second. A series of three lectures will illustrate what can be measured and discuss key techniques.  ACADEMIC TRAINING Françoise Benz Tel. 73127 francoise.benz@cern.ch

  19. Change in weight status and academic performance among senior high school students in Taiwan.

    Science.gov (United States)

    Liao, Pei-An; Chang, Hung-Hao; Wang, Jiun-Hao; Wu, Min-Chen

    2015-01-01

    This study examines how the changes in weight status across the spectrum of a senior high school study are associated with academic performance measured by the university entrance exam scores. A unique dataset which compiles a national health examination profile and the General Scholastic Ability Test data bank in Taiwan was constructed. The final sample comprised 149,240 senior high school students of which 70,662 were males and 78,578 were female students. The school-level fixed effect models were estimated. Students who were either (a) not overweight in the first year but overweight in the third year of senior high school, (b) overweight in both the first and third year, or (c) overweight in the first year but not overweight in the third year, were more likely to score lower on the university entrance exam, compared with their never-overweight counterparts. The findings differ by gender and test subjects. The change in weight status during senior high school period is associated with subsequent university entrance exam outcome. Students who start senior high school being overweight should be paid attention. School-based programs and practices need to be implemented to reduce the prevalence of overweight among students.

  20. Effectiveness of cognitive restructuring technique to reduce academic pracrastination of vocational high school students

    Directory of Open Access Journals (Sweden)

    Wahyu Nanda Eka Saputra

    2017-03-01

    Full Text Available Academic procrastination is a serious problem among student. Academic procrastination refers to delaying in doing assignments and preparing for examinations until the last period of examination time and submission date of assignments. To solve this problem we could use cognitive restructuring technique. The purposes of this research are to gain the description of academic procrastination decrease by implementing the cognitive restructuring technique. This research used a single subject research as the research design. The type of the single subject research which used in this research is multiple baselines. The result of this research shows that academic procrastination had significant decrease by implementation the cognitive restructuring technique. This research gives advice for two parts. First, it will be better if counselor implement the cognitive restructuring technique to decreasing academic procrastination. Second, it will be better if stakeholder of school gives support to counselor for implementation the cognitive restructuring technique to decrease academic procrastination.

  1. A Comparative Study of Foreign Language Anxiety and Motivation of Academic- and Vocational-Track High School Students

    Science.gov (United States)

    Liu, Hui-ju; Chen, Chien-wei

    2015-01-01

    This study aimed to investigate EFL learner language anxiety and learning motivation of high school students. Subjects included 155 students from the same private senior high school in central Taiwan, 60 in academic track and 95 in vocational track. The majority of the participants started taking English lessons either before entering elementary…

  2. The Impact of Parental Level of Income on Students' Academic Performance in High School in Japan

    Science.gov (United States)

    Machebe, Chioma Henrietta; Ezegbe, Bernedeth N.; Onuoha, Joseph

    2017-01-01

    The socioeconomic status of a child parent impacts on the educational development and achievement of the child. This study evaluated the effect of socioeconomic status, specifically parents income and parents-child relationship on student's academic performance in Senior High School in Japan. Three hundred students of Senior High Schools in Osaka…

  3. A Comparative Investigation on the Learning Efficacy of Mechatronic Technology between Academic and Vocational High School Students

    Science.gov (United States)

    Jou, Min; Hung, Chen-Kang; Lai, Shih-Hung

    2014-01-01

    Universities in Taiwan can be divided into two major categories of comprehensive universities and technological universities. Students studying engineering majors in comprehensive universities are often recruited from academic high schools while those in technological universities tend to be recruited from vocational high schools. The purpose of…

  4. Factors Affecting Burnout and School Engagement among High School Students: Study Habits, Self- Efficacy Beliefs, and Academic Success

    Science.gov (United States)

    Bilge, Filiz; Tuzgol Dost, Meliha; Cetin, Bayram

    2014-01-01

    This study examines high school students' levels of burnout and school engagement with respect to academic success, study habits, and self-efficacy beliefs. The data were gathered during the 2011-2012 school year from 633 students attending six high schools located in Ankara, Turkey. The analyses were conducted on responses from 605 students. The…

  5. The Relationship of Mental Pressure with Optimism and Academic Achievement Motivation among Second Grade Male High School Students

    Science.gov (United States)

    Sarouni, Ali Sedigh; Jenaabadi, Hossein; Pourghaz, Abdulwahab

    2016-01-01

    The present study aimed to examine the relationship of mental pressure with optimism and academic achievement motivation among second grade second period male high school students. This study followed a descriptive-correlational method. The sample included 200 second grade second period male high school students in Sooran. Data collection tools in…

  6. Impacts of Academic R&D on High-Tech Manufacturing Products: Tentative Evidence from Supercomputer Data

    Science.gov (United States)

    Le, Thanh; Tang, Kam Ki

    2015-01-01

    This paper empirically examines the impact of academic research on high-tech manufacturing growth of 28 Organisation for Economic Co-operation and Development (OECD) and emerging countries over the 1991-2005 period. A standard research and development (R&D) expenditure based measure is found to be too general to capture the input in high-tech…

  7. The associations among fundamental movement skills, self-reported physical activity and academic performance during junior high school in Finland.

    Science.gov (United States)

    Jaakkola, Timo; Hillman, Charles; Kalaja, Sami; Liukkonen, Jarmo

    2015-01-01

    The purpose of this study was to analyse the longitudinal associations between (1) fundamental movement skills (FMSs) and academic performance, and (2) self-reported physical activity and academic performance through junior high school in Finland. The participants of the study were 325 Finnish students (162 girls and 163 boys), who were 13 years old at the beginning of the study at Grade 7. Students performed three FMS tests and responded to a self-reported physical activity questionnaire at Grades 7 and 8. Marks in Finnish language, mathematics and history from Grades 7, 8 and 9 were collected. Structural equation modelling with multigroup method demonstrated that in the boys' group, a correlation (0.17) appeared between FMS and academic performance measured at Grade 7. The results also indicated that FMS collected at Grade 8 were significantly but weakly (path coefficient 0.14) associated with academic performance at Grade 9 for both gender groups. Finally, the results of this study demonstrated that self-reported physical activity was not significantly related to academic performance during junior high school. The findings of this study suggest that mastery of FMS may contribute to better student achievement during junior high school.

  8. The Development of Academic Self-Efficacy Scale for Filipino Junior High School Students

    Directory of Open Access Journals (Sweden)

    Angelo Reyes Dullas

    2018-04-01

    Full Text Available Primarily the research is focused on the development and validation of the Academic Self-efficacy Scale (ASES-FJHS for Filipino junior high school students. Self-efficacy refers to people’s beliefs in their capabilities to produce certain effects and to learn or perform behaviors at designated levels (Bandura, 2006, 2012. In relation to test construction, most of the developed self-efficacy scale focuses on one source of self-efficacy and are constructed as subscale. Given the limited published ASES for Filipino junior high school students as well as the non-existence of published and established ASES in Philippine context, this study sought to develop and validate a self-efficacy scale that is more holistic than those previously published. The design of the research is Test Development and anchored on Classical Test Theory. Respondents comprised of 4,759 junior high school students from selected 20 public and private schools in Nueva Ecija, Philippines. The study followed the two stages of test development, i.e., the development of the initial, preliminary, and final forms and validation of the scale. The items were developed through consultation with experts and literature reviews. After the development of table of specification, items were validated by four expert judges. Results showed using Lawshe Content Validation Ratio (CVI = 0.87 and Intra-class Correlation [ICC (2,4 = 0.953, a = 0.000] that the expert validators have high agreement on the items of ASES. Moreover, Upper Limit-Lower Limit method (d = 0.43, Cronbach alpha (0.95, split-half method (Spearman-Brown Coefficient = 0.86, item to total correlation, and Principal Component Analysis were also utilized to test the reliability of test items. The factor structure verified the four iterations which includes perceived control (PC, competence (C, persistence (P, and self-regulated learning domains. Convergent (r = 0.498; p < 0.05 and concurrent validity (r

  9. A nurse-led model at public academic hospitals maintains high adherence to colorectal cancer surveillance guidelines.

    Science.gov (United States)

    Symonds, Erin L; Simpson, Kalindra; Coats, Michelle; Chaplin, Angela; Saxty, Karen; Sandford, Jayne; Young Am, Graeme P; Cock, Charles; Fraser, Robert; Bampton, Peter A

    2018-06-18

    To examine the compliance of colorectal cancer surveillance decisions for individuals at greater risk with current evidence-based guidelines and to determine whether compliance differs between surveillance models. Prospective auditing of compliance of surveillance decisions with evidence-based guidelines (NHMRC) in two decision-making models: nurse coordinator-led decision making in public academic hospitals and physician-led decision making in private non-academic hospitals. Selected South Australian hospitals participating in the Southern Co-operative Program for the Prevention of Colorectal Cancer (SCOOP). Proportions of recall recommendations that matched NHMRC guideline recommendations (March-May 2015); numbers of surveillance colonoscopies undertaken more than 6 months ahead of schedule (January-December 2015); proportions of significant neoplasia findings during the 15 years of SCOOP operation (2000-2015). For the nurse-led/public academic hospital model, the recall interval recommendation following 398 of 410 colonoscopies (97%) with findings covered by NHMRC guidelines corresponded to the guideline recommendations; for the physician-led/private non-academic hospital model, this applied to 257 of 310 colonoscopies (83%) (P < 0.001). During 2015, 27% of colonoscopies in public academic hospitals (mean, 27 months; SD, 13 months) and 20% of those in private non-academic hospitals (mean, 23 months; SD, 12 months) were performed more than 6 months earlier than scheduled, in most cases because of patient-related factors (symptoms, faecal occult blood test results). The ratio of the numbers of high risk adenomas to cancers increased from 6.6:1 during 2001-2005 to 16:1 during 2011-2015. The nurse-led/public academic hospital model for decisions about colorectal cancer surveillance intervals achieves a high degree of compliance with guideline recommendations, which should relieve burdening of colonoscopy resources.

  10. Peer interactions and academic engagement of youth with developmental disabilities in inclusive middle and high school classrooms.

    Science.gov (United States)

    Carter, Erik W; Sisco, Lynn G; Brown, Lissa; Brickham, Dana; Al-Khabbaz, Zainab A

    2008-11-01

    We examined the peer interactions and academic engagement of 23 middle and high school students with developmental disabilities within inclusive academic and elective classrooms. The extent to which students with and without disabilities interacted socially was highly variable and influenced by instructional format, the proximity of general and special educators, and curricular area. Peer interactions occurred more often within small group instructional formats, when students were not receiving direct support from a paraprofessional or special educator, and in elective courses. Academic engagement also varied, with higher levels evidenced during one-to-one or small group instruction and when in proximity of general or special educators. Implications for designing effective support strategies for students with autism and/or intellectual disability within general education classrooms are discussed.

  11. Academic motivation, self-concept, engagement, and performance in high school: key processes from a longitudinal perspective.

    Science.gov (United States)

    Green, Jasmine; Liem, Gregory Arief D; Martin, Andrew J; Colmar, Susan; Marsh, Herbert W; McInerney, Dennis

    2012-10-01

    The study tested three theoretically/conceptually hypothesized longitudinal models of academic processes leading to academic performance. Based on a longitudinal sample of 1866 high-school students across two consecutive years of high school (Time 1 and Time 2), the model with the most superior heuristic value demonstrated: (a) academic motivation and self-concept positively predicted attitudes toward school; (b) attitudes toward school positively predicted class participation and homework completion and negatively predicted absenteeism; and (c) class participation and homework completion positively predicted test performance whilst absenteeism negatively predicted test performance. Taken together, these findings provide support for the relevance of the self-system model and, particularly, the importance of examining the dynamic relationships amongst engagement factors of the model. The study highlights implications for educational and psychological theory, measurement, and intervention. Copyright © 2012 The Foundation for Professionals in Services for Adolescents. Published by Elsevier Ltd. All rights reserved.

  12. Academic Libraries and High-Impact Practices for Student Retention: Library Deans' Perspectives

    Science.gov (United States)

    Murray, Adam

    2015-01-01

    Numerous studies on retention have highlighted the role of student engagement in influencing students' withdrawal decisions. This study seeks to address how academic libraries affect student retention by examining the perception of academic library deans or directors on the alignment between library services and resources with ten nationally…

  13. Student Bedtimes, Academic Performance, and Health in a Residential High School

    Science.gov (United States)

    Wernette, Maliah J.; Emory, Jan

    2017-01-01

    Inadequate sleep among adolescents is considered an epidemic in the United States. Late night bedtimes could be an important factor in academic performance and health with consequences continuing throughout adulthood. The purpose of this study was to explore the relationships between late night bedtimes, academic performance (grade point average…

  14. Academic Reading ability of first-year students: what's high school ...

    African Journals Online (AJOL)

    Both groups were administered a pre-test and post-test of academic reading ability. The dependent variable was academic reading ability and the independent variables were matric grade and prior exposure. Two measures of reading ability were used, namely a reading comprehension and a cloze passage. An analysis of ...

  15. Behavioral, Affective, and Cognitive Differences between High and Low Procrastinators as an Academic Deadline Approaches.

    Science.gov (United States)

    Rothblum, Esther D.; And Others

    Previous research has shown that college students often report problems with procrastination on academic tasks. A study was conducted to investigate factors related to academic procrastination. Subjects (N=379) completed the Procrastination Assessment Scale on measures of test anxiety, attributions, and self-control. A subset of subjects (N=125)…

  16. A Model of Academic Self-Concept for High School Hispanic Students in New York

    Science.gov (United States)

    Calero, Flor R.; Dalley, Christopher; Fernandez, Nicole; Davenport-Dalley, Tania Marie; Morote, Elsa-Sofia; Tatum, Stephanie L.

    2014-01-01

    This study examined how Hispanic students' academic self-concept influences the independent variables of family academic expectations, peer relationships, schoolwork, and student-teacher relationships. A survey was administered to 222 ninth-grade students in Long Island, New York, 99 of whom self-identified as Hispanic. A structural equation model…

  17. The battle of Alzheimer disease - the beginning of the futureUnleashing the potential of academic discoveries

    Directory of Open Access Journals (Sweden)

    Johan eLundkvist

    2014-05-01

    Full Text Available Alzheimer Disease (AD is the most common form of dementia, affecting approximately 36 million people worldwide. To date there is no preventive or curative treatment available for AD, and in absence of major progress in therapeutic development, AD manifests a concrete socioeconomic threat. The awareness of the growing problem of AD is increasing, exemplified by the recent G8 Dementia Summit, a meeting held in order to set the stage and steer the compass for the future. Simultaneously, and paradoxically, we have seen key players in the pharmaceutical industry that have recently closed or significantly decreased their R&D spending on AD and other CNS disorders. Given the pressing need for new treatments in this area, other actors need to step-in and enter this drug discovery arena complementing the industrial efforts, in order to turn biological and technological progress into novel therapeutics. In this article, we present an example of a novel drug discovery initiative that in a non-profit setting, aims to integrate with both preclinical and clinical academic groups and pharmaceutical industry to explore the therapeutic potential of new concepts in patients, using novel biology, state of the art technologies and rapid concept

  18. The battle of Alzheimer’s Disease – the beginning of the future Unleashing the potential of academic discoveries

    Science.gov (United States)

    Lundkvist, Johan; Halldin, Magnus M.; Sandin, Johan; Nordvall, Gunnar; Forsell, Pontus; Svensson, Samuel; Jansson, Liselotte; Johansson, Gunilla; Winblad, Bengt; Ekstrand, Jonas

    2014-01-01

    Alzheimer’s Disease (AD) is the most common form of dementia, affecting approximately 36 million people worldwide. To date there is no preventive or curative treatment available for AD, and in absence of major progress in therapeutic development, AD manifests a concrete socioeconomic threat. The awareness of the growing problem of AD is increasing, exemplified by the recent G8 Dementia Summit, a meeting held in order to set the stage and steer the compass for the future. Simultaneously, and paradoxically, we have seen key players in the pharmaceutical industry that have recently closed or significantly decreased their R&D spending on AD and other CNS disorders. Given the pressing need for new treatments in this area, other actors need to step-in and enter this drug discovery arena complementing the industrial efforts, in order to turn biological and technological progress into novel therapeutics. In this article, we present an example of a novel drug discovery initiative that in a non-profit setting, aims to integrate with both preclinical and clinical academic groups and pharmaceutical industry to explore the therapeutic potential of new concepts in patients, using novel biology, state of the art technologies and rapid concept testing. PMID:24847271

  19. Academic health centers on the front lines: survival strategies in highly competitive markets.

    Science.gov (United States)

    Blumenthal, D; Weissman, J S; Griner, P F

    1999-09-01

    The authors describe approaches that five academic health centers (AHCs) have taken to reduce costs, enhance quality, or improve their market positions since the onset of price competition and managed care. The five AHCs, all on the West Coast, were selected for study because they (1) are located in markets that had been highly competitive for the longest time; (2) are committed to all the major missions of AHCs; and (3) own or substantially control their major clinical teaching facilities. The study findings reflect the status of the five AHCs during the fall of 1998. Although some findings may no longer be current (especially in light of ongoing implementation of the Balanced Budget Act of 1997), they still provide insights into the options and opportunities available to many AHCs in highly competitive markets. The authors report on the institutions' financial viability (positive), levels of government support (advantageous), and competition from other AHCs (modest). They outline the study AHCs' survival strategies in three broad areas: increasing revenues via exploiting market niches, reducing costs, and reorganizing to improve internal governance and decision making. They also report how marketplace competition and the strategies the AHCs used to confront it have affected the AHCs' missions. The authors summarize the outstanding lessons that all AHCs can learn from the experiences of the AHCs studied, although adding that AHCs in other parts of the country should use caution in looking to the West Coast AHCs for answers.

  20. Case mix-adjusted cost of colectomy at low-, middle-, and high-volume academic centers.

    Science.gov (United States)

    Chang, Alex L; Kim, Young; Ertel, Audrey E; Hoehn, Richard S; Wima, Koffi; Abbott, Daniel E; Shah, Shimul A

    2017-05-01

    Efforts to regionalize surgery based on thresholds in procedure volume may have consequences on the cost of health care delivery. This study aims to delineate the relationship between hospital volume, case mix, and variability in the cost of operative intervention using colectomy as the model. All patients undergoing colectomy (n = 90,583) at 183 academic hospitals from 2009-2012 in The University HealthSystems Consortium Database were studied. Patient and procedure details were used to generate a case mix-adjusted predictive model of total direct costs. Observed to expected costs for each center were evaluated between centers based on overall procedure volume. Patient and procedure characteristics were significantly different between volume tertiles. Observed costs at high-volume centers were less than at middle- and low-volume centers. According to our predictive model, high-volume centers cared for a less expensive case mix than middle- and low-volume centers ($12,786 vs $13,236 and $14,497, P case mix at low-volume centers, which may lead to perceived poor performance at these centers. Copyright © 2016 Elsevier Inc. All rights reserved.

  1. [Nurses' image perceived by academic and vocational high school teachers in Korea].

    Science.gov (United States)

    Kang, Hae-Young; Go, Mi-Hye; Yang, Jin-Ju; Kim, Sun-Mi

    2003-10-01

    The purpose of this study was to identify nurses' image and its related factors to make nurses' image among academic and vocational high school teachers in Korea. Study samples were composed of 470 teachers who were from 12 high schools in G and J city located in southwestern part of Korea. Data were collected from August 26 to October 4, 2002. The internal consistency of the total scale was Cronbach's a =.940. In order to make nurses' image, 76.4% of respondents were influenced by the experience of their hospitalization in visiting hospitals. The mean score of nurses' image in general was 3.19+/-0.55; in four subcategories, 3.46+/-0.60 for professional image, 3.28+/-0.69 for traditional image, 2.93+/-0.70 for social image, and 2.91+/-0.64 for vision of nursing career. The mean score of nurses' image in general was more positive significantly in the 50's age group (F=6.43, p=.002) and in male groups (t=2.92, p=.002). On the basis of these findings, nursing professionals need to improve their working conditions, aspiration in job, and autonomy of nurses in their practice fields, monitor the mass media and other publishing materials continuously, and share the appropriate information on nursing profession to the school teachers and the public.

  2. Positive Correlation Between Academic Library Services and High-Impact Practices for

    Directory of Open Access Journals (Sweden)

    Saori Wendy Herman, MLIS, AHIP

    2016-03-01

    Full Text Available Objective – To investigate the perceived alignment between academic library services and high-impact practices (HIPs that affect student retention. Design – Survey questionnaire. Setting – Public comprehensive universities in the United States of America with a Carnegie classification of master’s level as of January 2013. Subjects – 68 library deans or directors out of the 271 who were originally contacted. Methods – The author used Qualtrics software to create a survey based on the HIPs, tested the survey for reliability, and then distributed it to 271 universities. Library services were grouped into 1 of 3 library scales: library collection, library instruction, or library facilities. The survey consisted of a matrix of 10 Likert-style questions addressing the perceived level of alignment between the library scales and the HIPs. Each question provided an opportunity for the respondent to enter a “brief description of support practices” (p 477. Additional demographic questions addressed the years of experience of the respondent, undergraduate student enrollment of the university, and whether librarians held faculty rank. Main Results – The author measured Pearson correlation coefficients and found a positive correlation between the library scales and the HIPs. All three library scales displayed a moderately strong positive correlation between first-year seminars and experiences (HIP 1, common intellectual experiences (HIP 2, writing-intensive courses (HIP 4, undergraduate research (HIP 6, diversity and global learning (HIP 7, service learning and community-based learning (HIP 8, internships (HIP 9, and capstone courses and projects (HIP 10. The library collections scale and library facilities scale displayed a moderately strong correlation with learning communities (HIP 3 and collaborative assignments and projects (HIP 5. The library instruction scale displayed a strong positive correlation with HIP 3 and a very strong

  3. Screening for Behavioral Risk: Identification of High Risk Cut Scores within the Social, Academic, and Emotional Behavior Risk Screener (SAEBRS)

    Science.gov (United States)

    Kilgus, Stephen P.; Taylor, Crystal N.; von der Embse, Nathaniel P.

    2018-01-01

    The purpose of this study was to support the identification of Social, Academic, and Emotional Behavior Risk Screener (SAEBRS) cut scores that could be used to detect high-risk students. Teachers rated students across two time points (Time 1 n = 1,242 students; Time 2 n = 704) using the SAEBRS and the Behavioral and Emotional Screening System…

  4. A Cross-National Validation of the Academic Expectations Stress Inventory with Chinese and Korean High School Students

    Science.gov (United States)

    Zhang, Xiaozhou; Tze, Virginia M. C.; Buhr, Erin; Klassen, Robert M.; Daniels, Lia M.

    2016-01-01

    The current study provided evidence for the factor structure of the Academic Expectation Stress Inventory (AESI) in a sample of 213 Mainland Chinese and 184 South Korean high school students. We examined cross-national invariance of the AESI using multiple-group confirmatory factor analysis across two Asian cultural samples. Results suggested a…

  5. The Impact of Cyberbullying on the Self-Esteem and Academic Functioning of Arab American Middle and High School Students

    Science.gov (United States)

    Yousef, Wael Shaher Mohammed; Bellamy, Al

    2015-01-01

    Introduction: Cyberbullying has received a considerable amount of attention within the academic and public literature. However, very little if any cyberbullying research has been conducted among Arab American students. This current study explored the impact of cyberbullying among middle and high school Arab American students on their self-esteem…

  6. Empowering the Middle: A High School Study Skills Program and Its Impact on Academic Achievement and Self-Efficacy

    Science.gov (United States)

    Simmons, Stephanie Yvette

    2017-01-01

    This study examined the impact of a self-regulatory skills course on the academic achievement and self-efficacy of 11th-grade students. The researcher compared intervention and control groups participants' pre- and posttest scores on the General Self-Efficacy Scale and the Learning and Study Skills Assessment Inventory-High School version. Scores…

  7. A Comparison of Perceptions of Barriers to Academic Success among High-Ability Students from High- and Low-Income Groups: Exposing Poverty of a Different Kind

    Science.gov (United States)

    Cross, Jennifer Riedl; Frazier, Andrea Dawn; Kim, Mihyeon; Cross, Tracy L.

    2018-01-01

    In 14 focus group interviews, sixth- to eighth-grade high-ability students from high- (n = 36) and low-income (n = 45) families were asked to describe the barriers they perceived to their academic success. Three themes were identified through the qualitative analysis: "Constraining Environments, Integration versus Isolation," and…

  8. Donde Estan los Estudiantes Puertorriquenos/os Exitosos? [Where Are the Academically Successful Puerto Rican Students?]: Success Factors of High-Achieving Puerto Rican High School Students

    Science.gov (United States)

    Antrop-Gonzalez, Rene; Velez, William; Garrett, Tomas

    2005-01-01

    This article describes the 4 success factors that 10 working class Puerto Rican urban high school students attributed to their high academic achievement. These success factors were (a) the acquisition of social capital through religiosity and participation in school and community-based extracurricular activities, (b) having a strong Puerto Rican…

  9. Motivational profiles of slovenian high school students and their academic performance outcomes.

    Science.gov (United States)

    Vrtačnik, Margareta; Juriševič, Mojca; Savec, Vesna Ferk

    2010-09-01

    Self-determination theory defines motivation as a multidimensional concept, with autonomous and controlled motivation as central factors of broader distinctions. Previous research has proven that academic achievements are positively correlated with autonomous motivation. Students from 10 Slovenian grammar schools were involved in empirical study, in which a cluster analysis revealed two motivational profiles: a low quantity motivation group (low controlled and autonomous motivation) and a good quality motivation group (high autonomous and low or average controlled motivation). Statistically significant differences between the two identified motivational profiles were found for students' general as well as chemistry performance in three grades of schooling. Furthermore, a good quality motivation group is also more in favour of autonomy-supportive teaching methods used in chemistry classes. Examination of students' opinions about important chemistry topics, and on the other hand, unimportant ones, and not connected with life, reveals that the basic reason for distinction might lie in the chemistry teacher's approach used while presenting these topics. Some chemistry teachers are not using an autonomy-supportive way of teaching which would contribute to better teaching outcomes; therefore a need for further research on Slovenian chemistry teachers' motivation and their teaching approaches was recognized.

  10. Cranial Tumor Surgical Outcomes at a High-Volume Academic Referral Center.

    Science.gov (United States)

    Brown, Desmond A; Himes, Benjamin T; Major, Brittny T; Mundell, Benjamin F; Kumar, Ravi; Kall, Bruce; Meyer, Fredric B; Link, Michael J; Pollock, Bruce E; Atkinson, John D; Van Gompel, Jamie J; Marsh, W Richard; Lanzino, Giuseppe; Bydon, Mohamad; Parney, Ian F

    2018-01-01

    To determine adverse event rates for adult cranial neuro-oncologic surgeries performed at a high-volume quaternary academic center and assess the impact of resident participation on perioperative complication rates. All adult patients undergoing neurosurgical intervention for an intracranial neoplastic lesion between January 1, 2009, and December 31, 2013, were included. Cases were categorized as biopsy, extra-axial/skull base, intra-axial, or transsphenoidal. Complications were categorized as neurologic, medical, wound, mortality, or none and compared for patients managed by a chief resident vs a consultant neurosurgeon. A total of 6277 neurosurgical procedures for intracranial neoplasms were performed. After excluding radiosurgical procedures and pediatric patients, 4151 adult patients who underwent 4423 procedures were available for analysis. Complications were infrequent, with overall rates of 9.8% (435 of 4423 procedures), 1.7% (73 of 4423), and 1.4% (63 of 4423) for neurologic, medical, and wound complications, respectively. The rate of perioperative mortality was 0.3% (14 of 4423 procedures). Case performance and management by a chief resident did not negatively impact outcome. In our large-volume brain tumor practice, rates of complications were low, and management of cases by chief residents in a semiautonomous manner did not negatively impact surgical outcomes. Copyright © 2017 Mayo Foundation for Medical Education and Research. Published by Elsevier Inc. All rights reserved.

  11. Survey of potential electronic applications of high temperature superconductors

    International Nuclear Information System (INIS)

    Hammond, R.B.; Bourne, L.C.

    1991-01-01

    In this paper the authors present a survey of the potential electronic applications of high temperature superconductor (HTSC) thin films. During the past four years there has been substantial speculation on this topic. The authors will cover only a small fraction of the potential electronic applications that have been identified. Their treatment is influenced by the developments over the past few years in materials and device development and in market analysis. They present their view of the most promising potential applications. Superconductors have two important properties that make them attractive for electronic applications. These are (a) low surface resistance at high frequencies, and (b) the Josephson effect

  12. Student Academic Performance: The Role of Motivation, Strategies, and Perceived Factors Hindering Liberian Junior and Senior High School Students Learning

    Directory of Open Access Journals (Sweden)

    Charles Gbollie

    2017-01-01

    Full Text Available The nature of motivation and learning strategy use is vital to improving student learning outcomes. This study was intended to explore the motivational beliefs and learning strategy use by Liberian junior and senior high school students in connection with their academic performance. It also solicited students’ self-reports about presumed factors hindering their learning. Utilizing a cross-sectional quantitative research design, 323 participants took part in the study from 2 counties. Motivated Strategies for Learning Questionnaire (MSLQ was adapted and 12 potential learning hindrances were identified and used as instruments. Data analyses were conducted using SPSS 17.0. The results showed the motivational belief component of extrinsic goal orientation as the most preferred belief and test anxiety was the least possessed belief. Rehearsal strategies were found to be the most frequently used, while help seeking was reported to be the least strategy considered. The result also showed significant relationships between the two constructs. In addition, the study found some learning hindrances. A number of conclusions as well as some practical recommendations for action relative to the improvement of student performance have been advanced.

  13. Race and Academic Achievement in Racially Diverse High Schools: Opportunity and Stratification.

    Science.gov (United States)

    Muller, Chandra; Riegle-Crumb, Catherine; Schiller, Kathryn S; Wilkinson, Lindsey; Frank, Kenneth A

    2010-04-01

    BACKGROUND/CONTEXT: Brown v Board of Education fundamentally changed our nation's schools, yet we know surprisingly little about how and whether they provide equality of educational opportunity. Although substantial evidence suggests that African American and Latino students who attend these schools face fewer learning opportunities than their White counterparts, until now, it has been impossible to examine this using a representative sample because of lack of data. PURPOSE/OBJECTIVE/RESEARCH QUESTION/FOCUS OF STUDY: This study uses newly available data to investigate whether racially diverse high schools offer equality of educational opportunity to students from different racial and ethnic groups. This is examined by measuring the relative representation of minority students in advanced math classes at the beginning of high school and estimating whether and how this opportunity structure limits the level of achievement attained by African American and Latino students by the end of high school. SETTING: This study uses data from the Adolescent Health and Academic Achievement Study (AHAA) and its partner study, the National Longitudinal Study of Adolescent Health (Add Health), a stratified, nationally representative study of students in U.S. high schools first surveyed in 1994-1995. POPULATION/PARTICIPANTS/SUBJECTS: Two samples of racially diverse high schools were used in the analysis: one with African Americans, Whites, and Asians (26 schools with 3,149 students), and the other with Latinos, Whites, and Asians (22 schools with 2,775 students). RESEARCH DESIGN: Quantitative analyses first assess how high schools vary in the extent to which minority students are underrepresented in advanced sophomore math classes. Hierarchical multilevel modeling is then used to estimate whether racial-ethnic differences in representation in advanced math have an impact on African American and Latino students' achievement by the end of high school, relative to the Whites and Asians

  14. Physics potential of ATLAS detector with high luminosity

    International Nuclear Information System (INIS)

    Zhou, Bing

    2004-01-01

    The ATLAS detector is designed to exploit the full physics potential in the TeV energy region opened up by the Large Hadron Collider at a center of mass energy of 14 TeV with very high luminosities. The physics performance of the ATLAS detector on Higgs, extra-dimension and strong symmetry breaking scenario is summarized in this note. ATLAS experiment has great discovery potential for these new phenomena with high luminosity. Triple gauge couplings are very sensitive for probing new physics at TeV scale. We show that ATLAS can measure these couplings very precisely with high luminosity. (orig.)

  15. Current state of knowledge, beliefs, and attitudes toward organ transplantation among academic students in Poland and the potential means for altering them.

    Science.gov (United States)

    Nowak, E; Pfitzner, R; Koźlik, P; Kozynacka, A; Durajski, L; Przybyłowski, P

    2014-10-01

    Students manifest a high level of social commitment. Improving their knowledge and developing more positive attitudes toward organ transplantation may increase the number of organ donations. This study was an assessment of the knowledge and attitudes toward organ transplantation among young people in Poland, with an overview of current beliefs and potential methods for improving transplantology awareness. The study included 400 medical students and 400 nonmedical students from public universities in Kraków, Poland. Data were collected by using an anonymous questionnaire examining demographic factors and transplantology issues. Despite the overall positive attitude toward transplantology among academic students in Poland, the state of knowledge of the nonmedical population remains relatively low. The most important issues for social education to focus on are the role of presumed consent and brain death diagnosis, actual hazards of living donations, recipient qualification criteria, and the attitudes of religious authorities. The overall level of knowledge and the number of positive attitudes were significantly higher among medical students than among nonmedical students, proving that formal educational programs are more efficient than the more accessible but less reliable sources of knowledge. Introduction of transplantology issues in schools and churches, promoting the positive outcomes of organ transplantation rather than negating false beliefs, and eliminating misleading information from the media may significantly increase young people's knowledge and result in more positive attitudes toward transplantology in a society-wide fashion. This outcome could create a favorable background for introducing an opt-in system of consent for organ donation.

  16. Parent Rated Symptoms of Inattention in Childhood Predict High School Academic Achievement Across Two Culturally and Diagnostically Diverse Samples

    Directory of Open Access Journals (Sweden)

    Astri J. Lundervold

    2017-08-01

    Full Text Available Objective: To investigate parent reports of childhood symptoms of inattention as a predictor of adolescent academic achievement, taking into account the impact of the child’s intellectual functioning, in two diagnostically and culturally diverse samples.Method: Samples: (a an all-female sample in the U.S. predominated by youth with ADHD (Berkeley Girls with ADHD Longitudinal Study [BGALS], N = 202, and (b a mixed-sex sample recruited from a Norwegian population-based sample (the Bergen Child Study [BCS], N = 93. Inattention and intellectual function were assessed via the same measures in the two samples; academic achievement scores during and beyond high school and demographic covariates were country-specific.Results: Childhood inattention predicted subsequent academic achievement in both samples, with a somewhat stronger effect in the BGALS sample, which included a large subgroup of children with ADHD. Intellectual function was another strong predictor, but the effect of early inattention remained statistically significant in both samples when intellectual function was covaried.Conclusion: The effect of early indicators of inattention on future academic success was robust across the two samples. These results support the use of remediation procedures broadly applied. Future longitudinal multicenter studies with pre-planned common inclusion criteria should be performed to increase our understanding of the importance of inattention in primary school children for concurrent and prospective functioning.

  17. Directly patching high-level exchange-correlation potential based on fully determined optimized effective potentials

    Science.gov (United States)

    Huang, Chen; Chi, Yu-Chieh

    2017-12-01

    The key element in Kohn-Sham (KS) density functional theory is the exchange-correlation (XC) potential. We recently proposed the exchange-correlation potential patching (XCPP) method with the aim of directly constructing high-level XC potential in a large system by patching the locally computed, high-level XC potentials throughout the system. In this work, we investigate the patching of the exact exchange (EXX) and the random phase approximation (RPA) correlation potentials. A major challenge of XCPP is that a cluster's XC potential, obtained by solving the optimized effective potential equation, is only determined up to an unknown constant. Without fully determining the clusters' XC potentials, the patched system's XC potential is "uneven" in the real space and may cause non-physical results. Here, we developed a simple method to determine this unknown constant. The performance of XCPP-RPA is investigated on three one-dimensional systems: H20, H10Li8, and the stretching of the H19-H bond. We investigated two definitions of EXX: (i) the definition based on the adiabatic connection and fluctuation dissipation theorem (ACFDT) and (ii) the Hartree-Fock (HF) definition. With ACFDT-type EXX, effective error cancellations were observed between the patched EXX and the patched RPA correlation potentials. Such error cancellations were absent for the HF-type EXX, which was attributed to the fact that for systems with fractional occupation numbers, the integral of the HF-type EXX hole is not -1. The KS spectra and band gaps from XCPP agree reasonably well with the benchmarks as we make the clusters large.

  18. Attention Training in Autism as a Potential Approach to Improving Academic Performance: A School-Based Pilot Study

    Science.gov (United States)

    Spaniol, Mayra Muller; Shalev, Lilach; Kossyvaki, Lila; Mevorach, Carmel

    2018-01-01

    This study assessed the effectiveness of an attention intervention program (Computerized Progressive Attentional Training; CPAT) in improving academic performance of children with ASD. Fifteen 6-10 year olds with ASD attending a mainstream and a special school were assigned to an experimental (CPAT; n = 8) and active control (computer games; n =…

  19. On adiabatic pair potentials of highly charged colloid particles

    Science.gov (United States)

    Sogami, Ikuo S.

    2018-03-01

    Generalizing the Debye-Hückel formalism, we develop a new mean field theory for adiabatic pair potentials of highly charged particles in colloid dispersions. The unoccupied volume and the osmotic pressure are the key concepts to describe the chemical and thermodynamical equilibrium of the gas of small ions in the outside region of all of the colloid particles. To define the proper thermodynamic quantities, it is postulated to take an ensemble averaging with respect to the particle configurations in the integrals for their densities consisting of the electric potential satisfying a set of equations that are derived by linearizing the Poisson-Boltzmann equation. With the Fourier integral representation of the electric potential, we calculate first the internal electric energy of the system from which the Helmholtz free energy is obtained through the Legendre transformation. Then, the Gibbs free energy is calculated using both ways of the Legendre transformation with respect to the unoccupied volume and the summation of chemical potentials. The thermodynamic functions provide three types of pair potentials, all of which are inversely proportional to the fraction of the unoccupied volume. At the limit when the fraction factor reduces to unity, the Helmholtz pair potential turns exactly into the well known Derjaguin-Landau-Verwey-Overbeek repulsive potential. The Gibbs pair potential possessing a medium-range strong repulsive part and a long-range weak attractive tail can explain the Schulze-Hardy rule for coagulation in combination with the van der Waals-London potential and describes a rich variety of phenomena of phase transitions observed in the dilute dispersions of highly charged particles.

  20. Lead dioxide electrodes for high potential anodic processes

    OpenAIRE

    A. B. VELICHENKO; ROSSANO AMADELLI

    2001-01-01

    Doping of PbO2 by cations (Fe3+, Co2+ and Ni2+), by F- and by cations and F- simultaneously is discussed as a way of improving the stability and electrochemical activity in processes occurring at high potentials. Doping allows the control of the amount of structural water in an oxide. Radiotracer experiments showed that high electrodeposition current densities favour the segregation of incorporated tritium (protons) at the surface. On the other hand, fluorine doping results in a marked decrea...

  1. Cocoa High School's Academic Courses as Viewed by Their Consumers: A Field Study.

    Science.gov (United States)

    Louwerse, F. H.

    A 16-item self-report instrument (included in an appendix) was developed to determine the views held by students (N=1,004) concerning aspects of courses in 5 academic areas: English, foreign languages, mathematics, science, and social studies. Individual items reflected views concerning: understanding course requirments (2 items), teacher/student…

  2. The Influence of Social Networking Sites on High School Students' Social and Academic Development

    Science.gov (United States)

    Ahn, June

    2010-01-01

    This dissertation examines the effects of social network sites on youth social and academic development. First, I provide a critical analysis of the extant research literature surrounding social network sites and youth. I merge scholarly thought in the areas of Internet studies, digital divides, social capital theory, psychological well-being,…

  3. Unequal Academic Achievement in High School: The Mediating Roles of Concerted Cultivation and Close Friends

    Science.gov (United States)

    Carolan, Brian V.

    2016-01-01

    Building from the classic Wisconsin model of status attainment, this study examines whether a specific style of parenting, concerted cultivation, and a close friend's school-related attitudes and behaviors mediate the relationship between a family's socioeconomic status and their child's academic achievement in the United States. Using a recursive…

  4. The Relationship of High School Students in Inclusive Settings: Emotional Health and Academic Achievement

    Science.gov (United States)

    Wilson, Carolyn H.; Stith-Russell, Lafawndra S.

    2010-01-01

    Academic success has become increasingly important in determining future quality of life. Many educational programs and institutions at various levels stress the need for students to score well on standardized tests and other methods of evaluation, in order to demonstrate their knowledge of various concepts and skills. The relationship between…

  5. Academic Achievement of High School Students in Relation to Their Anxiety, Emotional Maturity and Social Maturity

    Science.gov (United States)

    Puar, Surjit Singh

    2013-01-01

    The present study has been designed to investigate the non-cognitive variables like anxiety, emotional maturity and social maturity and their relationship with academic achievement and also to see the locale-wise differences on the basis of their anxiety, emotional maturity and social maturity. The study was conducted over a sample of 400 (200…

  6. The Changing Roles of Vocational and Academic Education in Future High Schools.

    Science.gov (United States)

    Pucel, David J.

    Both the rapid movement to the knowledge/imagination age and a more thorough understanding of how problem-solving skills are developed challenge traditional education to change and adopt a new set of goals. Academic and vocational education are modifying their goals and instructional procedures, and they are blending together. As technology has…

  7. How Does School Mobility Impact Indicators of Academic Achievement for Highly Mobile Students?

    Science.gov (United States)

    Tanner-McBrien, Laura

    2010-01-01

    Children who are homeless or in foster care change schools more often than their non-mobile peers. The impact of school mobility increases their risk of academic failure (Evans, 1996; Ingersoll, Scamman, & Eckerling, 1989; Mao, 1997, Mehana & Reynolds, 2003; Reynolds & Wolf, 1999). Laws enforcing the right of students to remain in…

  8. Modeling the Relations among Parental Involvement, School Engagement and Academic Performance of High School Students

    Science.gov (United States)

    Al-Alwan, Ahmed F.

    2014-01-01

    The author proposed a model to explain how parental involvement and school engagement related to academic performance. Participants were (671) 9th and 10th graders students who completed two scales of "parental involvement" and "school engagement" in their regular classrooms. Results of the path analysis suggested that the…

  9. The impact of peer relations on academic progress in junior high

    NARCIS (Netherlands)

    Lubbers, Miranda J.; Van der Werf, Margaretha P. C.; Snijders, Tom A. B.; Creemers, Bert P. M.; Kuyper, Hans

    2006-01-01

    The purpose of this study is to examine whether peer relations within classrooms were related to students' academic progress, and if so, whether this can be explained by students' relatedness and engagement, in line with Connell and Wellborn's self-system model. We analyzed data of 18,735 students

  10. Differences in Academic Achievement among Texas High School Students as a Function of Music Enrollment

    Science.gov (United States)

    Horton, Robert Wayne

    2012-01-01

    Purpose: The purpose of this study was to examine the score differences on the Texas Academic Knowledge and Skills (TAKS) Reading and Mathematics measures among students in Grades 10 and 11 as a function of music enrollment. Specifically, gender, ethnicity, socioeconomic status, and enrollment in choir, band, or orchestra or no music enrollment…

  11. Highly stressed carbon film coatings on silicon potential applications

    CERN Multimedia

    Sharda, T

    2002-01-01

    The fabrication of highly stressed and strongly adhered nanocrystalline diamond films on Si substrates is presented. A microwave plasma CVD method with controlled and continuous bias current density was used to grow the films. The stress/curvature of the films can be varied and controlled by altering the BCD. Potential applications for these films include particle physics and x-ray optics.

  12. Classifying At-Risk High School Youth: The Influence of Exposure to Community Violence and Protective Factors on Academic and Health Outcomes

    Science.gov (United States)

    Solberg, V. Scott H.; Carlstom, Aaron H.; Howard, Kimberly A. S.; Jones, Janice E.

    2007-01-01

    Using cluster analysis, 789 predominately Latino and African American high school youth were classified into varying academic at-risk profiles using self-reported levels of academic confidence, motivation to attend school, perceived family support, connections with teachers and peers, and exposure to violence. Six clusters emerged, 5 of which were…

  13. The Role of Academic Developers in Embedding High-Impact Undergraduate Research and Inquiry in Mainstream Higher Education: Twenty Years' Reflection

    Science.gov (United States)

    Healey, Mick; Jenkins, Alan

    2018-01-01

    The focus of this article is on the role of academic developers in supporting and influencing undergraduate research and inquiry, a high-impact activity. We examine the levels at which academic developers can influence undergraduate research and inquiry practices by distinguishing between staff and student practices; disciplinary and departmental…

  14. Association between attempted suicide and academic performance indicators among middle and high school students in Mexico: results from a national survey.

    Science.gov (United States)

    Orozco, Ricardo; Benjet, Corina; Borges, Guilherme; Moneta Arce, María Fátima; Fregoso Ito, Diana; Fleiz, Clara; Villatoro, Jorge Ameth

    2018-01-01

    Students' mental health is associated to academic performance. In high income countries, higher students' grades are related to lower odds of suicidal behaviors, but studies on other indicators of academic performance are more limited, specially in middle income countries. Data from 28,519 middle and high school students selected with multistage clustered sampling in the Mexican National Survey of Student's Drug Use. Using a self-administered questionnaire, lifetime suicidal attempt and four indicators of academic performance were assessed: age inconsistency with grade level, not being a student in the last year, perceived academic performance and number of failed courses. Multiple logistic regression models were used to control for sociodemographic and school characteristics. The lifetime prevalence of attempted suicide was 3.0% for middle school students and 4.2% for high school students. Among middle school students, statistically adjusted significant associations of suicide attempt with academic performance indicators were: not being a student the year before, worse self-perceived performance and a higher number of failed courses; among high school students, predictors were failed courses and self-perceived academic performance, with ORs of 1.65 and 1.96 for the categories of good and fair/poor respectively, compared to those who reported very good performance. Self-perceived academic performance was the main indicator for suicide in both school levels. Suicide prevention efforts in Mexico's schools should include asking students about the perception they have about their own academic performance.

  15. The Born-Mayer-Huggins potential in high temperature superconductors

    Science.gov (United States)

    Singh, Hempal; Singh, Anu; Indu, B. D.

    2016-07-01

    The Born-Mayer-Huggins potential which has been found the best suitable potential to study the YBa2Cu3O7-δ type high temperature superconductors is revisited in a new framework. A deeper insight in it reveals that the Born-Mayer parameters for different interactions in high temperature superconductor are not simple quantities but several thermodynamic and spatial functions enter the problem. Based on the new theory, the expressions for pressure, bulk modulus and Born-Mayer parameters have been derived and it is established that these quantities depend upon Gruneisen parameter which is the measure of the strength of anharmonic effects in high temperature superconductors. This theory has been applied to a specific model YBa2Cu3O7-δ crystal for the purpose of numerical estimates to justify the new results.

  16. Turkey's High Temperature Geothermal Energy Resources and Electricity Production Potential

    Science.gov (United States)

    Bilgin, Ö.

    2012-04-01

    Turkey is in the first 7 countries in the world in terms of potential and applications. Geothermal energy which is an alternative energy resource has advantages such as low-cost, clean, safe and natural resource. Geothermal energy is defined as hot water and steam which is formed by heat that accumulated in various depths of the Earth's crust; with more than 20oC temperature and which contain more than fused minerals, various salts and gases than normal underground and ground water. It is divided into three groups as low, medium and high temperature. High-temperature fluid is used in electricity generation, low and medium temperature fluids are used in greenhouses, houses, airport runways, animal farms and places such as swimming pools heating. In this study high temperature geothermal fields in Turkey which is suitable for electricity production, properties and electricity production potential was investigated.

  17. High precision electrostatic potential calculations for cylindrically symmetric lenses

    International Nuclear Information System (INIS)

    Edwards, David Jr.

    2007-01-01

    A method is developed for a potential calculation within cylindrically symmetric electrostatic lenses using mesh relaxation techniques, and it is capable of considerably higher accuracies than currently available. The method involves (i) creating very high order algorithms (orders of 6, 8, and 10) for determining the potentials at points in the net using surrounding point values, (ii) eliminating the effect of the large errors caused by singular points, and (iii) reducing gradients in the high gradient regions of the geometry, thereby allowing the algorithms used in these regions to achieve greater precisions--(ii) and (iii) achieved by the use of telescopic multiregions. In addition, an algorithm for points one unit from a metal surface is developed, allowing general mesh point algorithms to be used in these situations, thereby taking advantage of the enhanced precision of the latter. A maximum error function dependent on a sixth order gradient of the potential is defined. With this the single point algorithmic errors are able to be viewed over the entire net. Finally, it is demonstrated that by utilizing the above concepts and procedures, the potential of a point in a reasonably high gradient region of a test geometry can realize a precision of less than 10 -10

  18. High Level of Emotional Intelligence Is Related to High Level of Online Teaching Self-Efficacy among Academic Nurse Educators

    Science.gov (United States)

    Ali, Nagia; Ali, Omar; Jones, James

    2017-01-01

    This study examined the relationship between emotional intelligence (EI) and online teaching self-efficacy among 115 academic nurse educators who teach online (totally, blended, or both). The sample was randomly drawn from the list of nursing schools accredited by Commission on Collegiate Nursing Education (CCNE) with baccalaureate, master's…

  19. Electrochemical corrosion potential and noise measurement in high temperature water

    International Nuclear Information System (INIS)

    Fong, Clinton; Chen, Yaw-Ming; Chu, Fang; Huang, Chia-Shen

    2000-01-01

    Hydrogen water chemistry (HWC) is one of the most important methods in boiling water reactor(BWR) system to mitigate and prevent stress corrosion cracking (SCC) problems of stainless steel components. Currently, the effectiveness of HWC in each BWR is mainly evaluated by the measurement of electrochemical corrosion potentials (ECP) and on-line monitoring of SCC behaviors of stainless steels. The objective of this work was to evaluate the characteristics and performance of commercially available high temperature reference electrodes. In addition, SCC monitoring technique based on electrochemical noise analysis (ECN) was also tested to examine its crack detection capability. The experimental work on electrochemical corrosion potential (ECP) measurements reveals that high temperature external Ag/AgCl reference electrode of highly dilute KCl electrolyte can adequately function in both NWC and HWC environments. The high dilution external Ag/AgCl electrode can work in conjunction with internal Ag/AgCl reference electrode, and Pt electrode to ensure the ECP measurement reliability. In simulated BWR environment, the electrochemical noise tests of SCC were carried out with both actively and passively loaded specimens of type 304 stainless steel with various electrode arrangements. From the coupling current and corrosion potential behaviors of the passive loading tests during immersion test, it is difficult to interpret the general state of stress corrosion cracking based on the analytical results of overall current and potential variations, local pulse patterns, statistical characteristics, or power spectral density of electrochemical noise signals. However, more positive SCC indication was observed in the power spectral density analysis. For aqueous environments of high solution impedance, successful application of electrochemical noise technique for SCC monitoring may require further improvement in specimen designs and analytical methods to enhance detection sensitivity

  20. Behavior problems at ages 6 and 11 and high school academic achievement: longitudinal latent variable modeling.

    Science.gov (United States)

    Breslau, Naomi; Breslau, Joshua; Miller, Elizabeth; Raykov, Tenko

    2011-02-28

    Previous studies documented long-run effects of behavior problems at the start of school on academic achievement. However, these studies did not examine whether the observed effects of early behavior problems are explained by more proximate behavior problems, given the tendency of children's behavior problems to persist. Latent variable modeling was applied to estimate the effects of behavior problems at ages 6 and 11 on academic achievement at age 17, using data from a longitudinal study (n=823). Behavior problems at ages 6 and 11, each stage independently of the other, predicted lower math and reading test scores at age 17, controlling for intelligence quotient (IQ), birth weight, maternal characteristics, family and community environment, and taking into account behavior problems at age 17. Behavior problems at the start of school, independent of later behavior problems, exert lingering effects on achievement by impeding the acquisition of cognitive skills that are the foundation for later academic progress. Copyright © 2010 Elsevier Ireland Ltd. All rights reserved.

  1. Views on the peer review system of biomedical journals: an online survey of academics from high-ranking universities

    Science.gov (United States)

    2013-01-01

    Background Peer review is the major method used by biomedical journals for making the decision of publishing an article. This cross-sectional survey assesses views concerning the review system of biomedical journals among academics globally. Methods A total of 28,009 biomedical academics from high-ranking universities listed by the 2009 Times Higher Education Quacquarelli Symonds (THE-QS) World University Rankings were contacted by email between March 2010 and August 2010. 1,340 completed an online survey which focused on their academic background, negative experiences and views on biomedical journal peer review and the results were compared among basic scientists, clinicians and clinician scientists. Results Fewer than half of the respondents agreed that the peer review systems of biomedical journals were fair (48.4%), scientific (47.5%), or transparent (25.1%). Nevertheless, 58.2% of the respondents agreed that authors should remain anonymous and 64.4% agreed that reviewers should not be disclosed. Most, (67.7%) agreed to the establishment of an appeal system. The proportion of native English-speaking respondents who agreed that the “peer review system is fair” was significantly higher than for non-native respondents (p = 0.02). Similarly, the proportion of clinicians stating that the “peer review system is fair” was significantly higher than that for basic scientists and clinician-scientists (p = 0.004). For females, (β = −0.1, p = 0.03), the frequency of encountering personal attacks in reviewers’ comments (β = −0.1, p = 0.002) and the frequency of imposition of unnecessary references by reviewers (β = −0.06, p = 0.04) were independently and inversely associated with agreement that “the peer review system is fair”. Conclusion Academics are divided on the issue of whether the biomedical journal peer review system is fair, scientific and transparent. A majority of academics agreed with the double-blind peer

  2. The Effects of Financial Aid in High School on Academic and Labor Market Outcomes: A Quasi-Experimental Study

    DEFF Research Database (Denmark)

    Humlum, Maria Knoth; Vejlin, Rune Majlund

    We investigate the effects of financial aid on student employment and academic outcomes in high school. We exploit administrative differences in the amount of financial aid received based on timing of birth to identify the causal effects of interest. Specifically, individuals born early...... in a quarter receive less financial aid than comparable individuals born late in the previous quarter. We find that receiving less aid induces individuals to work more during high school. However, we do not find any evidence that receiving less financial aid and thereby working more is associated with any...

  3. Assessment of potential solder candidates for high temperature applications

    DEFF Research Database (Denmark)

    pressure to eliminate lead containing materials despite the fact that materials for high Pb containing alloys are currently not affected by any legislations. A tentative assessment was carried out to determine the potential solder candidates for high temperature applications based on the solidification...... criterion, phases predicted in the bulk solder and the thermodynamic stability of chlorides. These promising solder candidates were precisely produced using the hot stage microscope and its respective anodic and cathodic polarization curves were investigated using a micro-electrochemical set up...

  4. High-power CO laser and its potential applications

    International Nuclear Information System (INIS)

    Sato, Shunichi; Takahashi, Kunimitsu; Shimamoto, Kojiro; Takashima, Yoichi; Matsuda, Keiichi; Kuribayashi, Shizuma; Noda, Osamu; Imatake, Shigenori; Kondo, Motoe.

    1995-01-01

    The R and D program for the development of a high-power CO laser and its application technologies is described. Based on a self-sustained discharge excitation scheme, the available laser output has been successfully scaled to over 20 kW. The CO laser cutting experiments for thick metals have been performed in association with the decommissioning technologies development. Other potential applications, which include those based on photo chemical process, are reviewed. Recently demonstrated high-power tunable operation and room-temperature operation are also reported. (author)

  5. Relating psychological and social factors to academic performance: A longitudinal investigation of high-poverty middle school students.

    Science.gov (United States)

    Li, Yaoran; Allen, Jeff; Casillas, Alex

    2017-04-01

    We investigated the relations between middle school students' psychological factors (academic commitment and emotional control), social perceptions (family involvement and school climate), and academic performance over time. Gender differences in these relations were also examined. Based on a two-year longitudinal data set of 942 middle-school students from a high-poverty district in the United States, we found that all four factors measured in 6th grade were predictive of GPA at the end of the 7th grade above and beyond gender, race, and home intellectual materials. Among these factors, emotional control had the strongest relation with GPA, and the importance of family involvement increased over time, especially for female students. The results also revealed the indirect effects of the social factors on GPA through the psychological factors, and mostly through emotional control. These findings highlight the complex relation between the social-emotional factors and academic outcomes in early adolescence. Copyright © 2017 The Foundation for Professionals in Services for Adolescents. Published by Elsevier Ltd. All rights reserved.

  6. The academic and nonacademic characteristics of science and nonscience majors in Yemeni high schools

    Science.gov (United States)

    Anaam, Mahyoub Ali

    The purposes of this study were: (a) to identify the variables associated with selection of majors; (b) to determine the differences between science and nonscience majors in general, and high and low achievers in particular, with respect to attitudes toward science, integrated science process skills, and logical thinking abilities; and (c) to determine if a significant relationship exists between students' majors and their personality types and learning styles. Data were gathered from 188 twelfth grade male and female high school students in Yemen, who enrolled in science (45 males and 47 females) and art and literature (47 males and 49 females) tracks. Data were collected by the following instruments: Past math and science achievement (data source taken from school records), Kolb's Learning Styles Inventory (1985), Integrated Science Process Skills Test, Myers-Briggs Type Indicator, Attitude Toward Science in School Assessment, Group Assessment of Logical Thinking, Yemeni High School Students Questionnaire. The Logistic Regression Model and the Linear Discriminant Analysis identified several variables that are associated with selection of majors. Moreover, some of the characteristics of science and nonscience majors that were revealed by these models include the following: Science majors seem to have higher degrees of curiosity in science, high interest in science at high school level, high tendency to believe that their majors will help them to find a potential job in the future, and have had higher achievement in science subjects, and have rated their math teachers higher than did nonscience majors. In contrast, nonscience majors seem to have higher degrees of curiosity in nonscience subjects, higher interest in science at elementary school, higher anxiety during science lessons than did science majors. In addition, General Linear Models allow that science majors generally demonstrate more positive attitudes towards science than do nonscience majors and they

  7. Academic Training: Astronomy from Space

    CERN Multimedia

    Françoise Benz

    2005-01-01

    2004-2005 ACADEMIC TRAINING PROGRAMME LECTURE SERIES 14, 15, 16, 18 March from 11.00 to 12.00 hrs - Main Auditorium, bldg. 500 Astronomy from Space by T. Courvoisier / Observatoire de Genève In the very wide field of High Energy astrophysics we will select a number of topics that range from the source of radiative energy in the deep potential well around Schwarzschild and Kerr black holes and the basics of accretion disks around compact objects to the description and (where possible) the understanding of binary systems including a compact object (neutron star or black hole), of Active Galactic Nuclei and of gamma ray bursts. The approach that is chosen aims at giving an understanding of the most important phenomenologies encountered in high energy astrophysics rather than a detailed knowledge of one specific topic. ENSEIGNEMENT ACADEMIQUE ACADEMIC TRAINING Françoise Benz 73127 academic.training@cern.ch

  8. High level waste at Hanford: Potential for waste loading maximization

    International Nuclear Information System (INIS)

    Hrma, P.R.; Bailey, A.W.

    1995-09-01

    The loading of Hanford nuclear waste in borosilicate glass is limited by phase-related phenomena, such as crystallization or formation of immiscible liquids, and by breakdown of the glass structure because of an excessive concentration of modifiers. The phase-related phenomena cause both processing and product quality problems. The deterioration of product durability determines the ultimate waste loading limit if all processing problems are resolved. Concrete examples and mass-balance based calculations show that a substantial potential exists for increasing waste loading of high-level wastes that contain a large fraction of refractory components

  9. High spin rotations of nuclei with the harmonic oscillator potential

    International Nuclear Information System (INIS)

    Cerkaski, M.; Szymanski, Z.

    1978-01-01

    Calculations of the nuclear properties at high angular momentum have been performed recently. They are based on the liquid drop model of a nucleus and/or on the assumption of the single particle shell structure of the nucleonic motion. The calculations are usually complicated and involve long computer codes. In this article we shall discuss general trends in fast rotating nuclei in the approximation of the harmonic oscillator potential. We shall see that using the Bohr Mottelson simplified version of the rigorous solution of Valatin one can perform a rather simple analysis of the rotational bands, structure of the yrast line, moments of inertia etc. in the rotating nucleus. While the precision fit to experimental data in actual nuclei is not the purpose of this paper, one can still hope to reach some general understanding within the model of the simple relations resulting in nuclei at high spin. (author)

  10. Academic performance in the high school mathematics standardized test at metropolitan and remote areas of Costa Rica schools in 2013

    Directory of Open Access Journals (Sweden)

    Mario Castillo-Sánchez

    2016-01-01

    Full Text Available This article describes the academic performance of students from urban and distant areas in the national mathematics test corresponding to the completion of secondary education, considering the specific test and according to the different types of schools: daytime (daytime scientific, daytime humanistic, nighttime, technical or integrated centers for education of young people and adults (CINDEA, in its Spanish acronym.  The main objective is to describe the students academic performance in the national mathematics test issued to complete high-school level, for the year 2013 and according to the country educational areas.  For the analysis of such information, the main source used was the High-School Education National Report, issued by the Ministry of Public Education for 2013 standardized tests.  One of the conclusions from this study is the need to carry out a historical analysis of the performance of educational institutions which have recently obtained the highest and lowest average grades in the high-school diploma tests, in order to be able to delve into the causes of those performances.

  11. Renewable carbohydrates are a potential high-density hydrogen carrier

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Y.-H. Percival [Biological Systems Engineering Department, 210-A Seitz Hall, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061 (United States); Institute for Critical Technology and Applied Sciences (ICTAS), Virginia Polytechnic Institute and State University, Blacksburg, VA 24061 (United States); DOE BioEnergy Science Center (BESC), Oak Ridge, TN 37831 (United States)

    2010-10-15

    The possibility of using renewable biomass carbohydrates as a potential high-density hydrogen carrier is discussed here. Gravimetric density of polysaccharides is 14.8 H{sub 2} mass% where water can be recycled from PEM fuel cells or 8.33% H{sub 2} mass% without water recycling; volumetric densities of polysaccharides are >100 kg of H{sup 2}/m{sup 3}. Renewable carbohydrates (e.g., cellulosic materials and starch) are less expensive based on GJ than are other hydrogen carriers, such as hydrocarbons, biodiesel, methanol, ethanol, and ammonia. Biotransformation of carbohydrates to hydrogen by cell-free synthetic (enzymatic) pathway biotransformation (SyPaB) has numerous advantages, such as high product yield (12 H{sub 2}/glucose unit), 100% selectivity, high energy conversion efficiency (122%, based on combustion energy), high-purity hydrogen generated, mild reaction conditions, low-cost of bioreactor, few safety concerns, and nearly no toxicity hazards. Although SyPaB may suffer from current low reaction rates, numerous approaches for accelerating hydrogen production rates are proposed and discussed. Potential applications of carbohydrate-based hydrogen/electricity generation would include hydrogen bioreactors, home-size electricity generators, sugar batteries for portable electronics, sugar-powered passenger vehicles, and so on. Developments in thermostable enzymes as standardized building blocks for cell-free SyPaB projects, use of stable and low-cost biomimetic NAD cofactors, and accelerating reaction rates are among the top research and development priorities. International collaborations are urgently needed to solve the above obstacles within a short time. (author)

  12. Differences in Learning Characteristics Between Students With High, Average, and Low Levels of Academic Procrastination: Students’ Views on Factors Influencing Their Learning

    Directory of Open Access Journals (Sweden)

    Lennart Visser

    2018-05-01

    Full Text Available Within the field of procrastination, much research has been conducted on factors that have an influence on academic procrastination. Less is known about how such factors may differ for various students. In addition, not much is known about differences in the process of how factors influence students’ learning and what creates differences in procrastination behavior between students with different levels of academic procrastination. In this study learning characteristics and the self-regulation behavior of three groups of students with different levels of academic procrastination were compared. The rationale behind this was that certain learning characteristics and self-regulation behaviors may play out differently in students with different levels of academic procrastination. Participants were first-year students (N = 22 with different levels of academic procrastination enrolled in an elementary teacher education program. The selection of the participants into three groups of students (low procrastination, n = 8; average procrastination, n = 8; high procrastination, n = 6 was based on their scores on a questionnaire measuring the students’ levels of academic procrastination. From semi-structured interviews, six themes emerged that describe how students in the three groups deal with factors that influence the students’ learning: degree program choice, getting started with study activities, engagement in study activities, ways of reacting to failure, view of oneself, and study results. This study shows the importance of looking at differences in how students deal with certain factors possibly negatively influencing their learning. Within the group of students with average and high levels of academic procrastination, factors influencing their learning are regularly present. These factors lead to procrastination behavior among students with high levels of academic procrastination, but this seems not the case among students with an average

  13. Differences in Learning Characteristics Between Students With High, Average, and Low Levels of Academic Procrastination: Students' Views on Factors Influencing Their Learning.

    Science.gov (United States)

    Visser, Lennart; Korthagen, Fred A J; Schoonenboom, Judith

    2018-01-01

    Within the field of procrastination, much research has been conducted on factors that have an influence on academic procrastination. Less is known about how such factors may differ for various students. In addition, not much is known about differences in the process of how factors influence students' learning and what creates differences in procrastination behavior between students with different levels of academic procrastination. In this study learning characteristics and the self-regulation behavior of three groups of students with different levels of academic procrastination were compared. The rationale behind this was that certain learning characteristics and self-regulation behaviors may play out differently in students with different levels of academic procrastination. Participants were first-year students ( N = 22) with different levels of academic procrastination enrolled in an elementary teacher education program. The selection of the participants into three groups of students (low procrastination, n = 8; average procrastination, n = 8; high procrastination, n = 6) was based on their scores on a questionnaire measuring the students' levels of academic procrastination. From semi-structured interviews, six themes emerged that describe how students in the three groups deal with factors that influence the students' learning: degree program choice, getting started with study activities, engagement in study activities, ways of reacting to failure, view of oneself, and study results. This study shows the importance of looking at differences in how students deal with certain factors possibly negatively influencing their learning. Within the group of students with average and high levels of academic procrastination, factors influencing their learning are regularly present. These factors lead to procrastination behavior among students with high levels of academic procrastination, but this seems not the case among students with an average level of academic

  14. Differences in Learning Characteristics Between Students With High, Average, and Low Levels of Academic Procrastination: Students’ Views on Factors Influencing Their Learning

    Science.gov (United States)

    Visser, Lennart; Korthagen, Fred A. J.; Schoonenboom, Judith

    2018-01-01

    Within the field of procrastination, much research has been conducted on factors that have an influence on academic procrastination. Less is known about how such factors may differ for various students. In addition, not much is known about differences in the process of how factors influence students’ learning and what creates differences in procrastination behavior between students with different levels of academic procrastination. In this study learning characteristics and the self-regulation behavior of three groups of students with different levels of academic procrastination were compared. The rationale behind this was that certain learning characteristics and self-regulation behaviors may play out differently in students with different levels of academic procrastination. Participants were first-year students (N = 22) with different levels of academic procrastination enrolled in an elementary teacher education program. The selection of the participants into three groups of students (low procrastination, n = 8; average procrastination, n = 8; high procrastination, n = 6) was based on their scores on a questionnaire measuring the students’ levels of academic procrastination. From semi-structured interviews, six themes emerged that describe how students in the three groups deal with factors that influence the students’ learning: degree program choice, getting started with study activities, engagement in study activities, ways of reacting to failure, view of oneself, and study results. This study shows the importance of looking at differences in how students deal with certain factors possibly negatively influencing their learning. Within the group of students with average and high levels of academic procrastination, factors influencing their learning are regularly present. These factors lead to procrastination behavior among students with high levels of academic procrastination, but this seems not the case among students with an average level of academic

  15. Potential of Nonfullerene Small Molecules with High Photovoltaic Performance.

    Science.gov (United States)

    Li, Wanning; Yao, Huifeng; Zhang, Hao; Li, Sunsun; Hou, Jianhui

    2017-09-05

    Over the past decades, fullerene derivatives have become the most successful electron acceptors in organic solar cells (OSCs) and have achieved great progress, with power conversion efficiencies (PCEs) of over 11 %. However, fullerenes have some drawbacks, such as weak absorption, limited energy-level tunability, and morphological instability. In addition, fullerene-based OSCs usually suffer from large energy losses of over 0.7 eV, which limits further improvements in the PCE. Recently, nonfullerene small molecules have emerged as promising electron acceptors in OSCs. Their highly tunable absorption spectra and molecular energy levels have enabled fine optimization of the resulting devices, and the highest PCE has surpassed 12 %. Furthermore, several studies have shown that OSCs based on small-molecule acceptors (SMA) have very efficient charge generation and transport efficiency at relatively low energy losses of below 0.6 eV, which suggests great potential for the further improvement of OSCs. In this focus review, we analyze the challenges and potential of SMA-based OSCs and discuss molecular design strategies for highly efficient SMAs. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

  16. The mutagenic potential of high flash aromatic naphtha.

    Science.gov (United States)

    Schreiner, C A; Edwards, D A; McKee, R H; Swanson, M; Wong, Z A; Schmitt, S; Beatty, P

    1989-06-01

    Catalytic reforming is a refining process that converts naphthenes to aromatics by dehydrogenation to make higher octane gasoline blending components. A portion of this wide boiling range hydrocarbon stream can be separated by distillation and used for other purposes. One such application is a mixture of predominantly 9-carbon aromatic molecules (C9 aromatics, primarily isomers of ethyltoluene and trimethylbenzene), which is removed and used as a solvent--high-flash aromatic naphtha. A program was initiated to assess the toxicological properties of high-flash aromatic naphtha since there may be human exposure through inhalation or external body contact. The current study was conducted partly to assess the potential for mutagenic activity and also to assist in an assessment of carcinogenic potential. The specific tests utilized included the Salmonella/mammalian microsome mutagenicity assay, the hypoxanthine-guanine phosphoribosyl transferase (HGPRT) forward mutation assay in CHO cells, in vitro chromosome aberration and sister chromatid exchange (SCE) assays in CHO cells, and an in vivo chromosome aberration assay in rat bone marrow.

  17. Academic Hospitality

    Science.gov (United States)

    Phipps, Alison; Barnett, Ronald

    2007-01-01

    Academic hospitality is a feature of academic life. It takes many forms. It takes material form in the hosting of academics giving papers. It takes epistemological form in the welcome of new ideas. It takes linguistic form in the translation of academic work into other languages, and it takes touristic form through the welcome and generosity with…

  18. Health-Related Behaviors and Academic Achievement Among High School Students - United States, 2015.

    Science.gov (United States)

    Rasberry, Catherine N; Tiu, Georgianne F; Kann, Laura; McManus, Tim; Michael, Shannon L; Merlo, Caitlin L; Lee, Sarah M; Bohm, Michele K; Annor, Francis; Ethier, Kathleen A

    2017-09-08

    Studies have shown links between educational outcomes such as letter grades, test scores, or other measures of academic achievement, and health-related behaviors (1-4). However, as reported in a 2013 systematic review, many of these studies have used samples that are not nationally representative, and quite a few studies are now at least 2 decades old (1). To update the relevant data, CDC analyzed results from the 2015 national Youth Risk Behavior Survey (YRBS), a biennial, cross-sectional, school-based survey measuring health-related behaviors among U.S. students in grades 9-12. Analyses assessed relationships between academic achievement (i.e., self-reported letter grades in school) and 30 health-related behaviors (categorized as dietary behaviors, physical activity, sedentary behaviors, substance use, sexual risk behaviors, violence-related behaviors, and suicide-related behaviors) that contribute to leading causes of morbidity and mortality among adolescents in the United States (5). Logistic regression models controlling for sex, race/ethnicity, and grade in school found that students who earned mostly A's, mostly B's, or mostly C's had statistically significantly higher prevalence estimates for most protective health-related behaviors and significantly lower prevalence estimates for most health-related risk behaviors than did students with mostly D's/F's. These findings highlight the link between health-related behaviors and education outcomes, suggesting that education and public health professionals can find their respective education and health improvement goals to be mutually beneficial. Education and public health professionals might benefit from collaborating to achieve both improved education and health outcomes for youths.

  19. Physical fitness and academic performance: empirical evidence from the National Administrative Senior High School Student Data in Taiwan.

    Science.gov (United States)

    Liao, Pei-An; Chang, Hung-Hao; Wang, Jiun-Hao; Wu, Min-Chen

    2013-06-01

    This study examined the relationship between the changes of physical fitness across the 3-year spectrum of senior high school study and academic performance measured by standardized tests in Taiwan. A unique dataset of 149 240 university-bound senior high school students from 2009 to 2011 was constructed by merging two nationwide administrative datasets of physical fitness test performance and the university entrance exam scores. Hierarchical linear regression models were used. All regressions included controls for students' baseline physical fitness status, changes of physical fitness performance over time, age and family economic status. Some notable findings were revealed. An increase of 1 SD on students' overall physical fitness from the first to third school year is associated with an increase in the university entrance exam scores by 0.007 and 0.010 SD for male and female students, respectively. An increase of 1 SD on anaerobic power (flexibility) from the first to third school year is positively associated with an increase in the university entrance exam scores by 0.018 (0.010) SD among female students. We suggest that education and school health policymakers should consider and design policies to improve physical fitness as part of their overall strategy of improving academic performance.

  20. An exploration of key issues and potential solutions that impact physician wellbeing and professional fulfillment at an academic center

    Directory of Open Access Journals (Sweden)

    Iris Schrijver

    2016-03-01

    Full Text Available Background. Physician wellness is a vital element of a well-functioning health care system. Not only is physician wellness empirically associated with quality and patient outcomes, but its ramifications span individual, interpersonal, organizational, and societal levels. The purpose of this study was to explore academic physicians’ perceptions about their work-related wellness, including the following questions: (a What are the workplace barriers and facilitators to their wellness? (b What workplace solutions do theythinkwouldimprove their wellness? (cWhat motivates their work? and (d What existing wellness programs are they aware of? Methods. A multi-method design was applied to conduct a total of 19 focus group sessions in 17 clinical departments. All academic faculty ranks and career lines were represented in the 64 participating physicians, who began the sessions with five open-ended survey questions pertaining to physician wellness in their work environment. Participants entered their answers into a web-based survey program that enabled anonymous data collection. The initial survey component was followed by semi-structured focus group discussion. Data analysis of this qualitative study was informed by the general inductive approach as well as a review of extant literature through September 2015 on physician wellness, professional fulfillment, satisfaction, dissatisfaction, burnout and work-life. Results. Factors intrinsic to the work of physicians dominated the expressed reasons for work motivation. These factors all related to the theme of overall contribution, with categories of meaningful work, patient care, teaching, scientific discovery, self-motivation and matching of career interests. Extrinsic factors such as perceptions of suboptimal goal alignment, inadequate support, restricted autonomy, lack of appreciation, and suboptimal compensation and benefits dominated the risk of professional dissatisfaction. Discussion. Our findings

  1. An exploration of key issues and potential solutions that impact physician wellbeing and professional fulfillment at an academic center.

    Science.gov (United States)

    Schrijver, Iris; Brady, Keri J S; Trockel, Mickey

    2016-01-01

    Background. Physician wellness is a vital element of a well-functioning health care system. Not only is physician wellness empirically associated with quality and patient outcomes, but its ramifications span individual, interpersonal, organizational, and societal levels. The purpose of this study was to explore academic physicians' perceptions about their work-related wellness, including the following questions: (a) What are the workplace barriers and facilitators to their wellness? (b) What workplace solutions do theythinkwouldimprove their wellness? (c)What motivates their work? and (d) What existing wellness programs are they aware of? Methods. A multi-method design was applied to conduct a total of 19 focus group sessions in 17 clinical departments. All academic faculty ranks and career lines were represented in the 64 participating physicians, who began the sessions with five open-ended survey questions pertaining to physician wellness in their work environment. Participants entered their answers into a web-based survey program that enabled anonymous data collection. The initial survey component was followed by semi-structured focus group discussion. Data analysis of this qualitative study was informed by the general inductive approach as well as a review of extant literature through September 2015 on physician wellness, professional fulfillment, satisfaction, dissatisfaction, burnout and work-life. Results. Factors intrinsic to the work of physicians dominated the expressed reasons for work motivation. These factors all related to the theme of overall contribution, with categories of meaningful work, patient care, teaching, scientific discovery, self-motivation and matching of career interests. Extrinsic factors such as perceptions of suboptimal goal alignment, inadequate support, restricted autonomy, lack of appreciation, and suboptimal compensation and benefits dominated the risk of professional dissatisfaction. Discussion. Our findings indicate that the

  2. A survey of college-bound high school graduates regarding circadian preference, caffeine use, and academic performance.

    Science.gov (United States)

    Cole, James S

    2015-03-01

    This study examines the relationships between circadian preference and caffeine use with academic performance and hours spent studying for recent high school graduates entering their first year of college. Entering first-year college students enrolled at 90 baccalaureate-level institutions across the USA were invited to complete the Beginning College Survey of Student Engagement (BCSSE) and the Composite Scale of Morningness (CSM) as well as answer questions regarding caffeine consumption. Surveys were administered on each campus during the summer months of 2013. Only those that graduated from a US high school in the spring of 2013 were included in this study. The final sample for this study included 25,200 students that completed the BCSSE, CSM, and questions regarding caffeine consumption. Evening types (E-types) were significantly less likely to report earning A/A-'s in high school and less likely to study 16 or more hours per week compared to intermediate or morning types (M-types) (p students reported an average of 1.1 servings of caffeine per day, with 39 % reporting no caffeine consumption. M-types were more likely to consume no caffeine (54 %) compared to E-types that also indicated no daily caffeine (31 %) (p amount (7 %) (p high school. However, the apparent advantage that morning types had over evening types regarding high school grades was completely ameliorated once three or more servings of caffeine were consumed per day. This study provides additional information to educators and health professionals to create programs and provide resource to help adolescents better understand the impact of their sleep behaviors and use of caffeine on their academic performance.

  3. New perspectives on potential hydrogen storage materials using high pressure.

    Science.gov (United States)

    Song, Yang

    2013-09-21

    In addressing the global demand for clean and renewable energy, hydrogen stands out as the most suitable candidate for many fuel applications that require practical and efficient storage of hydrogen. Supplementary to the traditional hydrogen storage methods and materials, the high-pressure technique has emerged as a novel and unique approach to developing new potential hydrogen storage materials. Static compression of materials may result in significant changes in the structures, properties and performance that are important for hydrogen storage applications, and often lead to the formation of unprecedented phases or complexes that have profound implications for hydrogen storage. In this perspective article, 22 types of representative potential hydrogen storage materials that belong to four major classes--simple hydride, complex hydride, chemical hydride and hydrogen containing materials--were reviewed. In particular, their structures, stabilities, and pressure-induced transformations, which were reported in recent experimental works together with supporting theoretical studies, were provided. The important contextual aspects pertinent to hydrogen storage associated with novel structures and transitions were discussed. Finally, the summary of the recent advances reviewed and the insight into the future research in this direction were given.

  4. A High Redox Potential Laccase from Pycnoporus sanguineus RP15: Potential Application for Dye Decolorization

    Directory of Open Access Journals (Sweden)

    Ana L. R. L. Zimbardi

    2016-05-01

    Full Text Available Laccase production by Pycnoporus sanguineus RP15 grown in wheat bran and corncob under solid-state fermentation was optimized by response surface methodology using a Central Composite Rotational Design. A laccase (Lacps1 was purified and characterized and the potential of the pure Lacps1 and the crude culture extract for synthetic dye decolorization was evaluated. At optimal conditions (eight days, 26 °C, 18% (w/w milled corncob, 0.8% (w/w NH4Cl and 50 mmol·L−1 CuSO4, initial moisture 4.1 mL·g−1, the laccase activity reached 138.6 ± 13.2 U·g−1. Lacps1 was a monomeric glycoprotein (67 kDa, 24% carbohydrate. Optimum pH and temperature for the oxidation of 2,2’-azino-bis(3-ethylbenzthiazoline-6-sulfonate (ABTS were 4.4 and 74.4 °C, respectively. Lacps1 was stable at pH 3.0–8.0, and after two hours at 55–60 °C, presenting high redox potential (0.747 V vs. NHE. ABTS was oxidized with an apparent affinity constant of 147.0 ± 6.4 μmol·L−1, maximum velocity of 413.4 ± 21.2 U·mg−1 and catalytic efficiency of 3140.1 ± 149.6 L·mmol−1·s−1. The maximum decolorization percentages of bromophenol blue (BPB, remazol brilliant blue R and reactive blue 4 (RB4, at 25 or 40 °C without redox mediators, reached 90%, 80% and 60%, respectively, using either pure Lacps1 or the crude extract. This is the first study of the decolorization of BPB and RB4 by a P. sanguineus laccase. The data suggested good potential for treatment of industrial dye-containing effluents.

  5. A two-sided academic landscape: snapshot of highly-cited documents in Google Scholar (1950-2013

    Directory of Open Access Journals (Sweden)

    Alberto Martín-Martín

    2016-12-01

    Full Text Available The main objective of this paper is to identify and define the core characteristics of the set of highly-cited documents in Google Scholar (document types, language, free availability, sources, and number of versions, on the hypothesis that the wide coverage of this search engine may provide a different portrait of these documents with respect to that offered by traditional bibliographic databases. To do this, a query per year was carried out from 1950 to 2013 identifying the top 1,000 documents retrieved from Google Scholar and obtaining a final sample of 64,000 documents, of which 40% provided a free link to full-text. The results obtained show that the average highly-cited document is a journal or book article (62% of the top 1% most cited documents of the sample, written in English (92.5% of all documents and available online in PDF format (86.0% of all documents. Yet, the existence of errors should be noted, especially when detecting duplicates and linking citations properly. Nonetheless, the fact that the study focused on highly cited papers minimizes the effects of these limitations. Given the high presence of books and, to a lesser extent, of other document types (such as proceedings or reports, the present research concludes that the Google Scholar data offer an original and different vision of the most influential academic documents (measured from the perspective of their citation count, a set composed not only of strictly scientific material (journal articles but also of academic material in its broadest sense.

  6. An Analysis of the Relationship between High School Students' Self-Efficacy, Metacognitive Strategy Use and Their Academic Motivation for Learn Biology

    Science.gov (United States)

    Aydin, Solmaz

    2016-01-01

    This study aimed to analyze the relationship between high school students' self-efficacy perceptions regarding biology, the metacognitive strategies they use in this course and their academic motivation for learn biology. The sample of the study included 286 high school students enrolled in three high schools who attended a biology course in Kars,…

  7. Bilingual Academic and Career Education Services for Hispanic High School Students (Project BACES). Final Evaluation Report, 1992-93. OER Report.

    Science.gov (United States)

    Clarke, Candice

    This report presents an evaluation of the Bilingual Academic and Career Education Services for Hispanic High School Students (Project BACES), an Elementary and Secondary Education Act Title VII-funded project in its third year of operation at DeWitt Clinton High School in the Bronx and George Washington High School in Manhattan. The project served…

  8. Lead dioxide electrodes for high potential anodic processes

    Directory of Open Access Journals (Sweden)

    A. B. VELICHENKO

    2001-12-01

    Full Text Available Doping of PbO2 by cations (Fe3+, Co2+ and Ni2+, by F- and by cations and F- simultaneously is discussed as a way of improving the stability and electrochemical activity in processes occurring at high potentials. Doping allows the control of the amount of structural water in an oxide. Radiotracer experiments showed that high electrodeposition current densities favour the segregation of incorporated tritium (protons at the surface. On the other hand, fluorine doping results in a marked decrease in the amount of surface oxygen species. The influence of doping with metal cations strongly depends on the nature of the metal. Iron behaves like fluorine, while nickel causes an accumulation of surface oxygen species. Doped PbO2 electrodes have quite good activities for the electrogeneration of ozone. In particular, Fe and Co doped PbO2 showed a current efficiency of 15–20 % for this process. This result is relevant to our recent studies on “cathodic oxidation”, i.e., an ozone mediated electrochemical method in which an O2 stream is used to sweep the O2/O3 gas mixture produced at a PbO2 anode into the cathodic compartment of the same electrochemical cell containing polluting species.

  9. Consequence Prioritization Process for Potential High Consequence Events (HCE)

    Energy Technology Data Exchange (ETDEWEB)

    Freeman, Sarah G. [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2016-10-31

    This document describes the process for Consequence Prioritization, the first phase of the Consequence-Driven Cyber-Informed Engineering (CCE) framework. The primary goal of Consequence Prioritization is to identify potential disruptive events that would significantly inhibit an organization’s ability to provide the critical services and functions deemed fundamental to their business mission. These disruptive events, defined as High Consequence Events (HCE), include both events that have occurred or could be realized through an attack of critical infrastructure owner assets. While other efforts have been initiated to identify and mitigate disruptive events at the national security level, such as Presidential Policy Directive 41 (PPD-41), this process is intended to be used by individual organizations to evaluate events that fall below the threshold for a national security. Described another way, Consequence Prioritization considers threats greater than those addressable by standard cyber-hygiene and includes the consideration of events that go beyond a traditional continuity of operations (COOP) perspective. Finally, Consequence Prioritization is most successful when organizations adopt a multi-disciplinary approach, engaging both cyber security and engineering expertise, as in-depth engineering perspectives are required to recognize and characterize and mitigate HCEs. Figure 1 provides a high-level overview of the prioritization process.

  10. Opportunities for and limits to Academics as System builders-The case of realizing the potential of gasified biomass in Austria

    International Nuclear Information System (INIS)

    Hellsmark, Hans; Jacobsson, Staffan

    2009-01-01

    Gasified biomass is a technology that has the potential to partially replace fossil fuels for the production of heat, electricity, transport fuels, synthetic natural gas (BioSNG) and chemicals. In the context of climate change, biomass gasification is an attractive technology. It is, however, still in the early phase of its diffusion and much of the knowledge resides in the academic sector and in small companies-the technological innovation system (TIS) is in the process of being formed. Austria is one of the leading European countries in this field and much of the development in Austria can be traced to one prominent individual, Professor Hermann Hofbauer at the Technical University of Vienna. The purpose of this paper is to analyze how and the extent to which an individual academic, Professor Hofbauer, has influenced the formation of a TIS centred on gasified biomass in Austria. We find that his impact is multidimensional and significant but that there is also a frictional and intentional resistance that obstructs the commercialisation of the new technology. These sources of resistance go beyond the ability of an individual system builder to handle. Policy makers, therefore, need to add a strong element of system building activities that interact with and supplement those pursued by Professor Hofbauer.

  11. High Latitude Reefs: A Potential Refuge for Reef Builders

    Science.gov (United States)

    Amat, A.; Bates, N.

    2003-04-01

    Coral reefs globally show variable signs of deterioration or community structure changes due to a host of anthropogenic and natural factors. In these global scenarios, rates of calcification by reef builders such as Scleractinian corals are predicted to significantly decline in the future due to the increase in atmospheric CO_2. When considering the response of reefs to the present climate change, temperature effects should also be taken into account. Here, we investigate the simultaneous impact of temperature and CO_2 on the high-latitude Bermuda coral reef system (32^oN, 64^oE)through a series of in vitro experiments at different CO_2 levels and seasonally different summer (27^oC) and winter (20^oC) temperature conditions. Four species of Scleractinian corals (Porites astreoides, Diploria labyrinthiformis, Madracis mirabilis and decactis) were acclimated for three months at: 20^oC and 27^oC (both with CO_2 levels at 400 ppm (control) and 700 ppm). Growth was assessed by buoyant weight techniques during the acclimation period. Photosynthesis, respiration and calcification were measured at the end of this period using respirometric chambers. A reproduction experiment was also undertaken under 27^oC. Photosynthesis mainly remains constant or increases under high CO_2 conditions. The results of the integrated calcification measurements confirm the hypothesis that an increase in CO_2 induces a decrease in calcification. However an increase in photosynthesis can be observed when CO_2 is unfavorable for calcification suggesting that a biological control of calcification through photosynthesis could prevent a drop in the calcification potential. Buoyant weight results indicate that the CO_2 impact could be less detrimental under lower temperature. This result will be compared with the instantaneous calcification measurements in the chambers and some in situ coral growth assessments in winter and summer conditions. The consequences for the response of marginal reefs

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

    Directory of Open Access Journals (Sweden)

    Kimberly Miller

    2016-09-01

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

  13. Construction of high-quality NN potential models

    International Nuclear Information System (INIS)

    Stoks, V.G.J.; Klomp, R.A.M.; Terheggen, C.P.F.; de Swart, J.J.

    1994-01-01

    We present an updated version (Nijm93) of the Nijmegen soft-core potential, which gives a much better description of the np data than the older version (Nijm78). The χ 2 per datum is 1.87. The configuration-space and momentum-space versions of this potential are exactly equivalent, a unique feature among meson-theoretical potentials. We also present three new NN potential models: a nonlocal Reid-like Nijmegen potential (Nijm I), a local version (Nijm II), and an updated regularized version (Reid 93) of the Reid soft-core potential. These three potentials all have a nearly optimal χ 2 per datum and can therefore be considered as alternative partial-wave analyses. All potentials contain the proper charge-dependent one-pion-exchange tail

  14. Academic Library Services in Virtual Worlds: An Examination of the Potential for Library Services in Immersive Environments

    Science.gov (United States)

    Ryan, Jenna; Porter, Marjorie; Miller, Rebecca

    2010-01-01

    Current literature on libraries is abundant with articles about the uses and the potential of new interactive communication technology, including Web 2.0 tools. Recently, the advent and use of virtual worlds have received top billing in these works. Many library institutions are exploring these virtual environments; this exploration and the…

  15. Using skin carotenoids to assess potential dietary changes after one academic year in the Shaping Healthy Choices Program

    Science.gov (United States)

    Reported dietary intake is often used in community interventions to assess intake of fruits and vegetables (F/V); however, dietary assessment methods are inaccurate, and time and labor intensive. Skin carotenoids are a potential biomarker to assess F/V intake given that carotenoids are predominately...

  16. High organic containing tanks: Assessing the hazard potential

    International Nuclear Information System (INIS)

    Hill, R.C.P.; Babad, H.

    1991-09-01

    Eight Hanford Site tanks contain organic chemicals at concentrations believed to be greater than 10 mole percent sodium acetate equivalent mixed with the oxidizing salts sodium nitrate/sodium nitrite. Also, three of the hydrogen and ferrocyanide tanks appear on the organic tank list. Concentrations of organics that may be present in some tanks could cause an exothermic reaction given a sufficient driving force, such as high temperatures. However, the difference between ignition temperatures and actual tank temperatures measured is so large that the probability of such a reaction is considered very low. The consequences of the postulated reaction are about the same as the scenarios for an explosion in a ''burping'' hydrogen tank. Although work on this issue is just beginning, consideration of hazards associated with heating nitrate-nitrite mixtures containing organic materials is an integral part of both the hydrogen and ferrocyanide tank efforts. High concentrations of organic compounds have been inferred (from tank transfer, flow sheet records, and limited analytical data) in eight single-shell tanks. Many organic chemicals, if present in concentrations above 10 dry weight percent (sodium acetate equivalent), have the potential to react with nitrate-nitrites constituents at temperatures above 200 degree C (392 degree F) in an exothermic manner. The concentrations of organic materials in the listed single-shell tanks, and their chemical identity, is not accurately known at present. A tank sampling program has been planned to provide more information on the contents of these tanks and to serve as a basis for laboratory testing and safety evaluations. 2 refs., 1 fig., 2 tabs

  17. Low and High-Frequency Field Potentials of Cortical Networks ...

    Science.gov (United States)

    Neural networks grown on microelectrode arrays (MEAs) have become an important, high content in vitro assay for assessing neuronal function. MEA experiments typically examine high- frequency (HF) (>200 Hz) spikes, and bursts which can be used to discriminate between different pharmacological agents/chemicals. However, normal brain activity is additionally composed of integrated low-frequency (0.5-100 Hz) field potentials (LFPs) which are filtered out of MEA recordings. The objective of this study was to characterize the relationship between HF and LFP neural network signals, and to assess the relative sensitivity of LFPs to selected neurotoxicants. Rat primary cortical cultures were grown on glass, single-well MEA chips. Spontaneous activity was sampled at 25 kHz and recorded (5 min) (Multi-Channel Systems) from mature networks (14 days in vitro). HF (spike, mean firing rate, MFR) and LF (power spectrum, amplitude) components were extracted from each network and served as its baseline (BL). Next, each chip was treated with either 1) a positive control, bicuculline (BIC, 25μM) or domoic acid (DA, 0.3μM), 2) or a negative control, acetaminophen (ACE, 100μM) or glyphosate (GLY, 100μM), 3) a solvent control (H2O or DMSO:EtOH), or 4) a neurotoxicant, (carbaryl, CAR 5, 30μM ; lindane, LIN 1, 10μM; permethrin, PERM 25, 50μM; triadimefon, TRI 5, 65μM). Post treatment, 5 mins of spontaneous activity was recorded and analyzed. As expected posit

  18. Academics respond

    DEFF Research Database (Denmark)

    Hazel, Spencer

    2015-01-01

    Contribution to the article "Academics respond: Brexit would weaken UK university research and funding", Guardian Witness, The Guardian, UK......Contribution to the article "Academics respond: Brexit would weaken UK university research and funding", Guardian Witness, The Guardian, UK...

  19. Assessment of the phytoextraction potential of high biomass crop plants

    International Nuclear Information System (INIS)

    Hernandez-Allica, Javier; Becerril, Jose M.; Garbisu, Carlos

    2008-01-01

    A hydroponic screening method was used to identify high biomass crop plants with the ability to accumulate metals. Highest values of shoot accumulation were found in maize cv. Ranchero, rapeseed cv. Karat, and cardoon cv. Peralta for Pb (18 753 mg kg -1 ), Zn (10 916 mg kg -1 ), and Cd (242 mg kg -1 ), respectively. Subsequently, we tested the potential of these three cultivars for the phytoextraction of a metal spiked compost, finding out that, in cardoon and maize plants, increasing Zn and Cd concentrations led to lower values of root and shoot DW. By contrast, rapeseed shoot growth was not significantly affected by Cd concentration. Finally, a metal polluted soil was used to check these cultivars' phytoextraction capacity. Although the soil was phytotoxic enough to prevent the growth of cardoon and rapeseed plants, maize plants phytoextracted 3.7 mg Zn pot -1 . We concluded that the phytoextraction performance of cultivars varies depending on the screening method used. - The phytoextraction performance of cultivars varies significantly depending on the screening method used

  20. Assessment of the phytoextraction potential of high biomass crop plants

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez-Allica, Javier [NEIKER-tecnalia, Basque Institute of Agricultural Research and Development, c/Berreaga 1, E-48160 Derio (Spain); Becerril, Jose M. [Department of Plant Biology and Ecology, University of the Basque Country, P.O. Box 644, E-48080 Bilbao (Spain); Garbisu, Carlos [NEIKER-tecnalia, Basque Institute of Agricultural Research and Development, c/Berreaga 1, E-48160 Derio (Spain)], E-mail: cgarbisu@neiker.net

    2008-03-15

    A hydroponic screening method was used to identify high biomass crop plants with the ability to accumulate metals. Highest values of shoot accumulation were found in maize cv. Ranchero, rapeseed cv. Karat, and cardoon cv. Peralta for Pb (18 753 mg kg{sup -1}), Zn (10 916 mg kg{sup -1}), and Cd (242 mg kg{sup -1}), respectively. Subsequently, we tested the potential of these three cultivars for the phytoextraction of a metal spiked compost, finding out that, in cardoon and maize plants, increasing Zn and Cd concentrations led to lower values of root and shoot DW. By contrast, rapeseed shoot growth was not significantly affected by Cd concentration. Finally, a metal polluted soil was used to check these cultivars' phytoextraction capacity. Although the soil was phytotoxic enough to prevent the growth of cardoon and rapeseed plants, maize plants phytoextracted 3.7 mg Zn pot{sup -1}. We concluded that the phytoextraction performance of cultivars varies depending on the screening method used. - The phytoextraction performance of cultivars varies significantly depending on the screening method used.

  1. High Altitude Emissions of Black Carbon Aerosols: Potential Climate Implications

    Science.gov (United States)

    Satheesh, S. K.

    2017-12-01

    Synthesizing a series of ground-based and airborne measurements of aerosols over the Indian region during summer and pre-monsoon seasons have revealed the persistence of elevated absorbing aerosol layers over most of the Indian region; more than 50% of which located above clouds. Subsequent, in situ measurements of black carbon (BC) using high-altitude balloons, showed surprising layers with high concentrations in the middle and upper troposphere even at an altitude of 8 to 10 kms. Simultaneous measurements of the vertical thermal structure have shown localized warming due to BC absorption leading to large reduction in lapse rate and sharp temperature inversion, which in turn increases the atmospheric stability. This aerosol-induced stable layer is conducive for maintaining the black carbon layer longer at that level, leading thereby to further solar absorption and subsequently triggering dry convection. These observations support the `solar escalator' concept through which absorption-warming-convection cycles lead to self-lifting of BC to upper troposphere or even to lower stratosphere under favorable conditions in a matter of a few days. Employing an on-line regional chemistry transport model (WRF-Chem), incorporating aircraft emissions, it is shown that emissions from high-flying aircrafts as the most likely source of these elevated black carbon layers. These in-situ injected particles, produce significant warming of the thin air in those heights and lift these layers to even upper tropospheric/lower stratospheric heights, aided by the strong monsoonal convection occurring over the region, which are known to overshoot the tropical tropopause leading to injection of tropospheric air mass (along with its constituent aerosols) into the stratosphere, especially during monsoon season when the tropical tropopause layer is known to be thinnest. These simulations are further supported by the CALIPSO space-borne LIDAR derived extinction coefficient profiles. Based on

  2. Academic writing

    Science.gov (United States)

    Eremina, Svetlana V.

    2003-10-01

    The series of workshops on academic writing have been developed by academic writing instructors from Language Teaching Centre, Central European University and presented at the Samara Academic Writing Workshops in November 2001. This paper presents only the part dealing with strucutre of an argumentative essay.

  3. Self-regulatory mode (locomotion and assessment), well-being (subjective and psychological), and exercise behavior (frequency and intensity) in relation to high school pupils' academic achievement.

    Science.gov (United States)

    Garcia, Danilo; Jimmefors, Alexander; Mousavi, Fariba; Adrianson, Lillemor; Rosenberg, Patricia; Archer, Trevor

    2015-01-01

    Background. Self-regulation is the procedure implemented by an individual striving to reach a goal and consists of two inter-related strategies: assessment and locomotion. Moreover, both subjective and psychological well-being along exercise behaviour might also play a role on adolescents academic achievement. Method. Participants were 160 Swedish high school pupils (111 boys and 49 girls) with an age mean of 17.74 (sd = 1.29). We used the Regulatory Mode Questionnaire to measure self-regulation strategies (i.e., locomotion and assessment). Well-being was measured using Ryff's Psychological Well-Being Scales short version, the Temporal Satisfaction with Life Scale, and the Positive Affect and Negative Affect Schedule. Exercise behaviour was self-reported using questions pertaining to frequency and intensity of exercise compliance. Academic achievement was operationalized through the pupils' mean value of final grades in Swedish, Mathematics, English, and Physical Education. Both correlation and regressions analyses were conducted. Results. Academic achievement was positively related to assessment, well-being, and frequent/intensive exercise behaviour. Assessment was, however, negatively related to well-being. Locomotion on the other hand was positively associated to well-being and also to exercise behaviour. Conclusions. The results suggest a dual (in)direct model to increase pupils' academic achievement and well-being-assessment being directly related to higher academic achievement, while locomotion is related to frequently exercising and well-being, which in turn, increase academic achievement.

  4. Understanding Effective High Schools: Evidence for Personalization for Academic and Social Emotional Learning

    Science.gov (United States)

    Rutledge, Stacey A.; Cohen-Vogel, Lora; Osborne-Lampkin, La'Tara; Roberts, Ronnie L.

    2015-01-01

    This article presents findings from a year-long multilevel comparative case study exploring the characteristics of effective urban high schools. We developed a comprehensive framework from the school effectiveness research that guided our data collection and analysis at the four high schools. Using value-added methodology, we identified two higher…

  5. Teachers' Awareness of Cultural Diversity and Academic Achievement in Ninth Grade Academies and Senior High Schools

    Science.gov (United States)

    Whipps-Johnson, Jamellah Renee

    2016-01-01

    High school graduation rates are higher than they have ever been in 40 years, but disparities continue to exist for students of color and students from poverty when compared to their counterparts. High school reform efforts like creating small learning communities are promising, but small schools alone do not improve student outcomes.…

  6. Lessons in Success: A Multi-Campus Study of Factors Influencing Academic Accomplishment among High-Achieving African American Students at Private Liberal Arts Colleges

    Science.gov (United States)

    Johnson, Ryan A.

    2013-01-01

    The purpose of this study was to explore the academic experiences of highly successful African-American male graduates of small, private liberal arts colleges using a qualitative approach. Fourteen highly successful alumni from selective, private colleges were purposefully selected for the study, including seven African-American males and seven…

  7. Academic Training Lecture Regular Programme: How Large-Scale Civil Engineering Projects Realise the Potential of a City

    CERN Multimedia

    2012-01-01

    How Large-Scale Civil Engineering Projects Realise the Potential of a City (1/3), by Bill Hanway (Excecutive Director of Operations, AECOM Europe).   Wednesday, June 6, 2012 from 11:00 to 12:00 (Europe/Zurich) at CERN ( 80-1-001 - Globe 1st Floor ) In this series of three special lectures, leading experts from AECOM would explore the impact of a trio of major projects on a single city. In common with every metropolis, London has run-down districts and infrastructure in need of upgrading. The lectures propose to cover three of the biggest challenges: regenerating run-down areas; reducing congestion and transporting people more efficiently; and improving water and wastewater systems. Each project contributes to a collective public aim - to realise the potential of a growing city, and ensure its healthy, sustainable and competitive future. Lecture 1: Into the lecture series and The London 2012 Olympic Games Most cities share a group of common complex challenges – growing populations, agei...

  8. The potential of high resolution ultrasonic in-situ methods

    International Nuclear Information System (INIS)

    Schuster, K.

    2010-01-01

    Document available in extended abstract form only. In the framework of geomechanical assessment of final repository underground openings the knowledge of geophysical rock parameters are of importance. Ultrasonic methods proved to be good geophysical tools to provide appropriate high resolution parameters for the characterisation of rock. In this context the detection and characterisation of rock heterogeneities at different scales, including the Excavation Damaged/disturbed Zone (EDZ/EdZ) features, play an important role. Especially, kinematic and dynamic parameters derived from ultrasonic measurements can be linked very close to rock mechanic investigations and interpretations. BGR uses high resolution ultrasonic methods, starting with emitted frequencies of about 1 kHz (seismic) and going up to about 100 kHz. The method development is going on and appropriate research and investigations are performed since many years at different European radioactive waste disposal related underground research laboratories in different potential host rocks. The most frequented are: Mont Terri Rock Laboratory, Switzerland (Opalinus Clay, OPA), Underground Research Laboratory Meuse/Haute- Marne, France (Callovo-Oxfordian, COX), Underground Research Facility Mol, Belgium (Boom Clay, BC), Aespoe Hard Rock Laboratory, Sweden (granites), Rock Laboratory Grimsel, Switzerland (granites) and Asse salt mine, Germany (rock salt). The methods can be grouped into borehole based methods and noninvasive methods like refraction and reflection methods, which are performed in general from the drift wall. Additionally, as a combination of these both methods a sort of vertical seismic profiling (VSP) is applied. The best qualified method, or a combination of methods, have to be chosen according to the scientific questions and the local site conditions. The degree of spatial resolution of zones of interest or any kind of anomaly depends strongly on the distance of these objects to the ultrasonic

  9. REDEFINING THE POTENTIAL ROLE OF CHARISMATIC LANGUAGE TEACHERS IN CREATING SUPPORTIVE ACADEMIC ATMOSPHERE THROUGH STUDENTS’ MOTIVATIONAL AROUSAL

    Directory of Open Access Journals (Sweden)

    Adi Suryani

    2016-06-01

    Full Text Available Charismatic language teachers have considerable potentials to nurture motivations in their students. They have personal magnetism which frequently they exhibit through their characters, communication, and how they develop relationship with their students. Charismatic teachers tend to be energetic, emphatic, warm, express confidence, love challenge, communicate vision, develop warm communication, put concern, trust, be inspiring and motivational. These characters allow them to be role model and inspire their motivation to their students. Their trusting behaviour also can lead to the creation of supportive classroom climate since supportive learning situation needs sense of autonomy. By having this sense of autonomy, students can voice their perspectives, beliefs and finally develop their autonomy self-regulation. By using their personal aura, charismatic language teachers can stimulate their students’ inner motivation.

  10. Electron injection dynamics in high-potential porphyrin photoanodes.

    Science.gov (United States)

    Milot, Rebecca L; Schmuttenmaer, Charles A

    2015-05-19

    promising sensitizers because their high reduction potentials are compatible with the energy requirements of water oxidation. TRTS of free-base and metalated pentafluorophenyl porphyrins reveal inefficient electron injection into TiO2 nanoparticles but more efficient electron injection into SnO2 nanoparticles. With SnO2, injection time scales depend strongly on the identity of the central substituent and are affected by competition with excited-state deactivation processes. Heavy or paramagnetic metal ions increase the electron injection time scale by roughly one order of magnitude relative to free-base or Zn(2+) porphyrins due to the possibility of electron injection from longer-lived, lower-lying triplet states. Furthermore, electron injection efficiency loosely correlates with DSSC performance. The carboxylate anchoring group is commonly used to bind DSSC sensitizers to metal oxide surfaces but typically is not stable under the aqueous and oxidative conditions required for water oxidation. Electron injection efficiency of several water-stable alternatives, including phosphonic acid, hydroxamic acid, acetylacetone, and boronic acid, were evaluated using TRTS, and hydroxamate was found to perform as well as the carboxylate. The next challenge is incorporating a water oxidation catalyst into the design. An early example, in which an Ir-based precatalyst is cosensitized with a fluorinated porphyrin, reveals decreased electron injection efficiency despite an increase in photocurrent. Future research will seek to better understand and address these difficulties.

  11. Case Studies of Leading Edge Small Urban High Schools. Core Academic Strategic Designs: 2. Noble Street Charter High School

    Science.gov (United States)

    Shields, Regis Anne; Ireland, Nicole; City, Elizabeth; Derderian, Julie; Miles, Karen Hawley

    2008-01-01

    This report is one of nine detailed case studies of small urban high schools that served as the foundation for the Education Resource Strategies (ERS) report "Strategic Designs: Lessons from Leading Edge Small Urban High Schools." These nine schools were dubbed "Leading Edge Schools" because they stand apart from other high…

  12. The Effect of Teaching the Entire Academic Year of High School Chemistry Utilizing Abstract Reasoning

    Science.gov (United States)

    Page, Michael F. Z.; Escott, Patrick; Silva, Maritza; Barding, Gregory A., Jr.

    2018-01-01

    This case study demonstrates the ability of high school chemistry students, with varying levels of math preparation, to experience learning-gains on state and district assessments as it relates to chemical reactions, thermodynamics, and kinetics. These advances were predicated on the use of a teaching style rooted in abstract reasoning. The…

  13. Students' High School Organizational Leadership Opportunities and Their Influences on Academic Achievement and Civic Participation

    Science.gov (United States)

    Elemen, Jennifer E.

    2015-01-01

    The purpose of this quantitative study was to analyze high school leadership praxis for its inclusion of students in organizational leadership dialogue and decision-making and the influences of these factors on student achievement and civic participation. Survey questionnaire data were provided by 215 full-time enrolled undergraduate students from…

  14. Are There Academic CTE Cluster Pipelines? Linking High School CTE Coursetaking and Postsecondary Credentials

    Science.gov (United States)

    Plasman, Jay S.; Gottfried, Michael; Sublett, Cameron

    2017-01-01

    Career and technical education (CTE) has become a key focus of stakeholders across the political spectrum. It has been shown to be an effective means of promoting many desired outcomes, including increased chances of high school graduation, improved opportunities of enrolling in advanced math and science courses, and increased earnings after high…

  15. Academic Instruction at a Distance: An Examination of Holistic Teacher Perceptions in a Virtual High School

    Science.gov (United States)

    Flores, Serena; Walters, Nicole McZeal; Kiekel, Jean

    2018-01-01

    The purpose of this qualitative study was to examine holistic perceptions of teachers in a virtual high school who deliver secondary instruction using an online format. The demand for equitable learning spaces to support both teachers and students have led to the increased demand of virtual schools. The questionnaire administered to eight online…

  16. The relationship between affective response to social comparison and academic performance in high school

    NARCIS (Netherlands)

    Wehrens, M.J.P.W.; Buunk, Abraham (Bram); Lubbers, M.J.; Dijkstra, Pieternel; Kuyper, H.; Van der Werf, M.P.C.

    The goal of the present study was to study the relationship between affective responses to social comparison and test scores among high school students Our analyses showed that three types of responses to social comparison could be distinguished: an empathic, constructive, and destructive response.

  17. The Use of Software in Academic Stream High School Mathematics Teaching

    Science.gov (United States)

    Clay, Simon; Fotou, Nikolaos; Monaghan, John

    2017-01-01

    This paper reports on classroom observations of senior high school mathematics lessons with a focus on the use of digital technology. The observations were of teachers enrolled in an in-service course, Teaching Advanced Mathematics. The paper reports selected results and comments on: software that was observed to have been used; the use (or not)…

  18. Exploring Factors That Promote Online Learning Experiences and Academic Self-Concept of Minority High School Students

    Science.gov (United States)

    Kumi-Yeboah, Alex; Dogbey, James; Yuan, Guangji

    2018-01-01

    The rapid growth of online education at the K-12 level in recent years presents the need to explore issues that influence the academic experiences of students choosing this method of learning. In this study, we examined factors that promote/hinder the learning experiences and academic self-concept of minority students attending an online high…

  19. Relationships between Time-Management Skills, Facebook Interpersonal Skills and Academic Achievement among Junior High School Students

    Science.gov (United States)

    Tsai, Hsien-Chang; Liu, Shih-Hsiung

    2015-01-01

    Effective time-management skills and interpersonal interactions with familiar friends for learning matters on Facebook are desired characteristics for adolescents attempting to improve their academic achievements. This study identifies the relationships between time-management skills and Facebook interpersonal skills with the academic achievement…

  20. Low-Income Hispanic and Latino High School Students' Perceptions of Parent and Peer Academic Support

    Science.gov (United States)

    Ramirez, Lizbeth; Machida, Sandra K.; Kline, Linda; Huang, Leesa

    2014-01-01

    Socioeconomic status and parental support play important roles in determining academic achievement and have been positively correlated with academic success. It is important to determine if students from low-socioeconomic-status (SES) families perceive less parent support than students from middle-SES families. The participants (n?=?54) were high…

  1. Fasciculation potentials in high-density surface EMG.

    NARCIS (Netherlands)

    Drost, G.; Kleine, B.U.; Stegeman, D.F.; Engelen, B.G.M. van; Zwarts, M.J.

    2007-01-01

    Fasciculation potentials (FPs) are observed in healthy individuals, but also in patients with neurogenic disorders. The exact site of origin and the clinical relevance in distinguishing, for example, amyotrophic lateral sclerosis (ALS) from other neurogenic diseases based on specific characteristics

  2. Ionizing potential waves and high-voltage breakdown streamers.

    Science.gov (United States)

    Albright, N. W.; Tidman, D. A.

    1972-01-01

    The structure of ionizing potential waves driven by a strong electric field in a dense gas is discussed. Negative breakdown waves are found to propagate with a velocity proportional to the electric field normal to the wavefront. This causes a curved ionizing potential wavefront to focus down into a filamentary structure, and may provide the reason why breakdown in dense gases propagates in the form of a narrow leader streamer instead of a broad wavefront.

  3. Potential human exposure to halogenated flame-retardants in elevated surface dust and floor dust in an academic environment

    International Nuclear Information System (INIS)

    Allgood, Jaime M.; Jimah, Tamara; McClaskey, Carolyn M.; La Guardia, Mark J.; Hammel, Stephanie C.; Zeineddine, Maryam M.; Tang, Ian W.; Runnerstrom, Miryha G.; Ogunseitan, Oladele A.

    2017-01-01

    Most households and workplaces all over the world possess furnishings and electronics, all of which contain potentially toxic flame retardant chemicals to prevent fire hazards. Indoor dust is a recognized repository of these types of chemicals including polybrominated diphenyl ethers (PBDEs) and non-polybrominated diphenyl ethers (non-PBDEs). However, no previous U.S. studies have differentiated concentrations from elevated surface dust (ESD) and floor dust (FD) within and across microenvironments. We address this information gap by measuring twenty-two flame-retardant chemicals in dust on elevated surfaces (ESD; n=10) and floors (FD; n=10) from rooms on a California campus that contain various concentrations of electronic products. We hypothesized a difference in chemical concentrations in ESD and FD. Secondarily, we examined whether or not this difference persisted: (a) across the studied microenvironments and (b) in rooms with various concentrations of electronics. A Wilcoxon signed-rank test demonstrated that the ESD was statistically significantly higher than FD for BDE-47 (p=0.01), BDE-99 (p=0.01), BDE-100 (p=0.01), BDE-153 (p=0.02), BDE-154 (p=0.02), and 3 non-PBDEs including EH-TBB (p=0.02), BEH-TEBP (p=0.05), and TDCIPP (p=0.03). These results suggest different levels and kinds of exposures to flame-retardant chemicals for individuals spending time in the sampled locations depending on the position of accumulated dust. Therefore, further research is needed to estimate human exposure to flame retardant chemicals based on how much time and where in the room individuals spend their time. Such sub-location estimates will likely differ from assessments that assume continuous unidimensional exposure, with implications for improved understanding of potential health impacts of flame retardant chemicals. - Highlights: • Brominated flame retardants used in electronic products accumulate in room dust • Various chemical moieties of flame retardants leach

  4. Potential human exposure to halogenated flame-retardants in elevated surface dust and floor dust in an academic environment

    Energy Technology Data Exchange (ETDEWEB)

    Allgood, Jaime M.; Jimah, Tamara [Department of Population Health & Disease Prevention, Program in Public Health, University of California, Irvine, CA 92697-3957 (United States); McClaskey, Carolyn M. [Department of Cognitive Sciences, School of Social Sciences, University of California, Irvine, CA 92697-5100 (United States); La Guardia, Mark J. [Department of Aquatic Health Sciences, Virginia Institute of Marine Science, College of William and Mary, Gloucester Point, VA 23062 (United States); Hammel, Stephanie C.; Zeineddine, Maryam M.; Tang, Ian W.; Runnerstrom, Miryha G. [Department of Population Health & Disease Prevention, Program in Public Health, University of California, Irvine, CA 92697-3957 (United States); Ogunseitan, Oladele A., E-mail: Oladele.Ogunseitan@uci.edu [Department of Population Health & Disease Prevention, Program in Public Health, University of California, Irvine, CA 92697-3957 (United States)

    2017-02-15

    Most households and workplaces all over the world possess furnishings and electronics, all of which contain potentially toxic flame retardant chemicals to prevent fire hazards. Indoor dust is a recognized repository of these types of chemicals including polybrominated diphenyl ethers (PBDEs) and non-polybrominated diphenyl ethers (non-PBDEs). However, no previous U.S. studies have differentiated concentrations from elevated surface dust (ESD) and floor dust (FD) within and across microenvironments. We address this information gap by measuring twenty-two flame-retardant chemicals in dust on elevated surfaces (ESD; n=10) and floors (FD; n=10) from rooms on a California campus that contain various concentrations of electronic products. We hypothesized a difference in chemical concentrations in ESD and FD. Secondarily, we examined whether or not this difference persisted: (a) across the studied microenvironments and (b) in rooms with various concentrations of electronics. A Wilcoxon signed-rank test demonstrated that the ESD was statistically significantly higher than FD for BDE-47 (p=0.01), BDE-99 (p=0.01), BDE-100 (p=0.01), BDE-153 (p=0.02), BDE-154 (p=0.02), and 3 non-PBDEs including EH-TBB (p=0.02), BEH-TEBP (p=0.05), and TDCIPP (p=0.03). These results suggest different levels and kinds of exposures to flame-retardant chemicals for individuals spending time in the sampled locations depending on the position of accumulated dust. Therefore, further research is needed to estimate human exposure to flame retardant chemicals based on how much time and where in the room individuals spend their time. Such sub-location estimates will likely differ from assessments that assume continuous unidimensional exposure, with implications for improved understanding of potential health impacts of flame retardant chemicals. - Highlights: • Brominated flame retardants used in electronic products accumulate in room dust • Various chemical moieties of flame retardants leach

  5. Academic Training: Academic Training Lectures-Questionnaire

    CERN Multimedia

    2004-01-01

    ACADEMIC TRAINING Françoise Benz tel. 73127 academic.training@cern.ch SUGGEST AND WIN! Its time to plan the 2004-2005 lecture series. From today until March 19 you have the chance to give your contribution to planning for next year's Academic Training Lecture Series. At the web site: http://cern.ch/Academic.Training/questionnaire you will find questionnaires proposing topics in high energy physics, applied physics and science and society. Answering the questionnaire will help ensure that the selected topics are as close as possible to your interests. In particular requests and comments from students will be much appreciated. To encourage your contribution, the AT Committee will reward one lucky winner with a small prize, a 50 CHF coupon for a book purchase at the CERN bookshop.

  6. Potential scenarios of concern for high speed rail operations

    Science.gov (United States)

    2011-03-16

    Currently, multiple operating authorities are proposing the : introduction of high-speed rail service in the United States. : While high-speed rail service shares a number of basic : principles with conventional-speed rail service, the operational : ...

  7. Academic and Nonacademic Validating Agents on Latinas Mathematics and Science Self Concept A Quantitative Study Utilizing the High School Longitudinal Study of 2009

    Science.gov (United States)

    Garza, Jennifer M.

    The purpose of this study is to inform and further the discussion of academic (i.e. teachers and school counselors) and non-academic (i.e. parents, family, friends, etc.) validating agents on Latina students' mathematics and science self-concepts. This study found a relationship between Latina students' interactions with academic and non-academic validating agents and their math and science self-concept at the K-12 level. Through the review of the literature the researcher addresses identifiable factors and strategies that inform the field of education in the areas of validation theory, family characteristics, and access to STEM fields for Latina students. The researcher used an established instrument designed, administered, and validated through the National Center for Education Statistics (NCES). For purposes of this study, a categorical subset of participants who self-identified as being a Latina student was used. As a result, the total subset number in this study was N=1,882. To determine if academic and non-academic validating agents had an observable statistically significant relationship with Latina students' math and science self-concept, a series of one-way ANOVAs were calculated to compare differences in students' math and science self-concept based on academic and non-academic validating agents for the weighted sample of Latinas for the HLS:09 survey. A path analysis was also employed to assess the factors involved in Latina students' math and science self-concepts. The findings are consistent with previous research involving the influence that academic and non-academic validating agents have on the math and science self-concept of Latina students. The results indicated that students who had teachers that believed in the students, regardless of family background, social economic status or home environment influences had higher math and science self concepts than those who did not. Similarly, it was found that students who had counselors that set high

  8. 2006-2007 Academic training programme: QCD and high energy nuclear collision

    CERN Multimedia

    HR Department

    2007-01-01

    LECTURE SERIES 7, 8, 9 May QCD and high energy nuclear collisions D. Kharzeev, Brookhaven National Laboratory, USA 11:00 to 12:00 - Main Auditorium, Bldg. 500 on 7 and 8 May, Council Chamber on 9 May Six years ago, Relativistic Heavy Ion Collider at Brookhaven started colliding heavy nuclei at record center-of-mass energies of up to 200 GeV/nucleon. Very soon, the Large Hadron Collider at CERN will push the energy of the ions to an astounding 5 TeV/nucleon. What can be learnt from the experiments at these machines? What do we know about the physics of super--dense matter already? I will argue that heavy ion accelerators bring us to the new frontiers of physical knowledge by creating strong color fields and very high densities of partons, at which qualitatively new phenomena emerge. I will also discuss the cross-disciplinary implications for cosmology, astrophysics, and connections to condensed matter physics.

  9. 2006-2007 Academic training programme: QCD and high energy nuclear collisions

    CERN Multimedia

    HR Department

    2007-01-01

    LECTURE SERIES 7, 8, 9 May 2007 11:00 to 12:00 - Main Auditorium, Bldg. 500 on 7 and 8 May, Council Chamber on 9 May QCD and high energy nuclear collisions D. Kharzeev, Brookhaven National Laboratory, USA Six years ago, the Relativistic Heavy Ion Collider at Brookhaven started colliding heavy nuclei at record center-of-mass energies of up to 200 GeV/nucleon. Very soon, the Large Hadron Collider at CERN will push the energy of the ions to an astounding 5 TeV/nucleon. What can be learnt from the experiments at these machines? What do we know about the physics of super--dense matter already? I will argue that heavy ion accelerators bring us to the new frontiers of physical knowledge by creating strong color fields and very high densities of partons, at which qualitatively new phenomena emerge. I will also discuss the cross-disciplinary implications for cosmology, astrophysics, and connections to condensed matter physics.

  10. The High Luminosity Challenge: potential and limitations of High Intensity High Brightness in the LHC and its injectors

    CERN Document Server

    De Maria, R; Banfi, D; Barranco, J; Bartosik, H; Benedetto, E; Bruce, R; Brüning, O; Calaga, R; Cerutti, F; Damerau, H; Esposito, L; Fartoukh, S; Fitterer, M; Garoby, R; Gilardoni, S; Giovannozzi, M; Goddard, B; Gorini, B; Hanke, K; Iadarola, G; Lamont, M; Meddahi, M; Métral, E; Mikulec, B; Mounet, N; Papaphilippou, Y; Pieloni, T; Redaelli, S; Rossi, L; Rumolo, G; Shaposhnikova, E; Sterbini, G; Todesco, E; Tomás, R; Zimmermann, F; Valishev, A

    2014-01-01

    High-intensity and high-brightness beams are key ingredients to maximize the LHC integrated luminosity and to exploit its full potential. This contribution describes the optimization of beam and machine parameters to maximize the integrated luminosity as seen by the LHC experiments, by taking into account the expected intensity and brightness reach of LHC itself and its injector chain as well as the capabilities of the detectors for next run and foreseen upgrade scenarios.

  11. The High-Technology Connection: Academic/Industrial Cooperation for Economic Growth. ASHE-ERIC Higher Education Research Report No. 6.

    Science.gov (United States)

    Johnson, Lynn G.

    Cooperative arrangements between academic institutions and industry are examined, with attention to linkages in high technology research and development (R&D), the commercial application of R&D (technology transfer), and the preparation and continuing development of scientific and engineering personnel. Incentives and barriers to campus/corporate…

  12. An Examination of the Influence of Self Efficacy, Locus of Control, and Perceptions of Parent Involvement on Academic Achievement of Urban High School Students

    Science.gov (United States)

    Myree, Claudia

    2011-01-01

    Current research indicates that there is an on-going concern for the graduation rate of African American students in urban settings. This particular study sought to investigate the impact of students' self-efficacy, locus of control, and parental involvement on academic achievement via a targeted sample of urban African American high school…

  13. How Does the Science Writing Heuristic Approach Affect Students' Performances of Different Academic Achievement Levels? A Case for High School Chemistry

    Science.gov (United States)

    Kingir, Sevgi; Geban, Omer; Gunel, Murat

    2012-01-01

    This study investigates the effects of the Science Writing Heuristic (SWH), known as an argumentation-based science inquiry approach, on Grade 9 students' performance on a post-test in relation to their academic achievement levels. Four intact classes taught by 2 chemistry teachers from a Turkish public high school were selected for the study; one…

  14. Influence of Peer Buddy Program Interventions for Adolescents with Disabilities in a High School Setting: Impact on Social and Academic Achievement

    Science.gov (United States)

    Alqahtani, Ragea Mohammed

    2013-01-01

    A mixed methods research design was chosen for this study in order to examine the effectiveness of the Peer Buddy Program across one year on the social and academic skill acquisition of high school students with learning disabilities (LD) and/or emotional/behavioral disabilities (EBD). Specifically, this research focused on identifying the…

  15. Student Centered Homogeneous Ability Grouping: Using Bronfenbrenner's Theory of Human Development to Investigate the Ecological Factors Contributing to the Academic Achievement of High School Students in Mathematics

    Science.gov (United States)

    Webb, Karla Denise

    2011-01-01

    The purpose of this qualitative study was to explore the interconnectedness of the environment, human development, and the factors that influence students' academic performance in a homogeneous ability grouped mathematics classroom. The study consisted of four African American urban high school juniors, 2 male and 2 female. During the 12 week…

  16. Academic performance: A case study of mathematics and science educators from rural Washington high schools

    Science.gov (United States)

    Hancock, Tira K.

    A qualitative descriptive case study explored courses of action for educators and leaders of math and science educators to implement to help students achieve state assessment standard and postsecondary success. The problem focused on two demographically similar rural high schools in Southwest Washington that demonstrated inadequate rates of student achievement in mathematics and science. The research question investigated courses of action that may assist educators and leaders of secondary math and science educators to help students achieve WASL standards and postsecondary success in compliance with the No Child Left Behind (NCLB) Act of 2001. Senge's learning organization theory (1990, 2006) and Fullan's (2001) contributions to leading and learning in times of change provided the theoretical framework for the study. Twenty study participant responses analyzed with qualitative analysis software QSR NVivo 7 revealed six themes. Triangulation of responses with secondary data from WASL assessment scores and case study school assessment data identified 14 courses of action and three recommendations for educators and leaders of math and science educators to help students meet state standards and postsecondary success. Critical factors identified in the study as needed to assist educators to help students succeed included professional development, collaboration, teaching practices, funding, student accountability, and parental involvement.

  17. Photochemistry at high temperatures - potential of ZnO as a high temperature photocatalyst

    Energy Technology Data Exchange (ETDEWEB)

    Schubnell, M; Beaud, P; Kamber, I [Paul Scherrer Inst. (PSI), Villigen (Switzerland)

    1997-06-01

    Direct conversion of solar radiation into useful, storeable and transportable chemical products is the primary goal of solar chemistry. In this paper we discuss some fundamental aspects of photochemistry at elevated temperatures. We show that luminescence can serve as an indicator of the potential use of a system as a photoconverter. As an example we present experimental data on the chemical potential and on the lifetime of the excited states of ZnO. The low luminescence quantum yield together with a lifetime of about 200 ps indicate that an efficient photochemical conversion on ZnO is highly improbable. We believe this to be a general feature of chemical systems based on a semiconductor photocatalyst, in particular of photoreactions at a solid/gas interface. (author) 3 figs., 6 refs

  18. Academic stress and personality interact to increase the neural response to high-calorie food cues.

    Science.gov (United States)

    Neseliler, Selin; Tannenbaum, Beth; Zacchia, Maria; Larcher, Kevin; Coulter, Kirsty; Lamarche, Marie; Marliss, Errol B; Pruessner, Jens; Dagher, Alain

    2017-09-01

    Psychosocial stress is associated with an increased intake of palatable foods and weight gain in stress-reactive individuals. Personality traits have been shown to predict stress-reactivity. However, it is not known if personality traits influence brain activity in regions implicated in appetite control during psychosocial stress. The current study assessed whether Gray's Behavioural Inhibition System (BIS) scale, a measure of stress-reactivity, was related to the activity of brain regions implicated in appetite control during a stressful period. Twenty-two undergraduate students participated in a functional magnetic resonance imaging (fMRI) experiment once during a non-exam period and once during final exams in a counter-balanced order. In the scanner, they viewed food and scenery pictures. In the exam compared with the non-exam condition, BIS scores related to increased perceived stress and correlated with increased blood-oxygen-level dependent (BOLD) response to high-calorie food images in regions implicated in food reward and subjective value, such as the ventromedial prefrontal cortex, (vmPFC) and the amygdala. BIS scores negatively related to the functional connectivity between the vmPFC and the dorsolateral prefrontal cortex. The results demonstrate that the BIS trait influences stress reactivity. This is observed both as an increased activity in brain regions implicated in computing the value of food cues and decreased connectivity of these regions to prefrontal regions implicated in self-control. This suggests that the effects of real life stress on appetitive brain function and self-control is modulated by a personality trait. This may help to explain why stressful periods can lead to overeating in vulnerable individuals. Copyright © 2017 Elsevier Ltd. All rights reserved.

  19. Velocity potential formulations of highly accurate Boussinesq-type models

    DEFF Research Database (Denmark)

    Bingham, Harry B.; Madsen, Per A.; Fuhrman, David R.

    2009-01-01

    , B., 2006. A Boussinesq-type method for fully nonlinear waves interacting with a rapidly varying bathymetry. Coast. Eng. 53, 487-504); Jamois et al. (Jamois, E., Fuhrman, D.R., Bingham, H.B., Molin, B., 2006. Wave-structure interactions and nonlinear wave processes on the weather side of reflective...... with the kinematic bottom boundary condition. The true behaviour of the velocity potential formulation with respect to linear shoaling is given for the first time, correcting errors made by Jamois et al. (Jamois, E., Fuhrman, D.R., Bingham, H.B., Molin, B., 2006. Wave-structure interactions and nonlinear wave...... processes on the weather side of reflective structures. Coast. Eng. 53, 929-945). An exact infinite series solution for the potential is obtained via a Taylor expansion about an arbitrary vertical position z=(z) over cap. For practical implementation however, the solution is expanded based on a slow...

  20. Anharmonic effective pair potentials of gold under high pressure and high temperature

    CERN Document Server

    Okube, M; Ohtaka, O; Fukui, H; Katayama, Y; Utsumi, W

    2002-01-01

    In order to examine the effect of pressure on the anharmonicity of Au, extended x-ray absorption fine-structure spectra near the Au L sub 3 edge were measured in the temperature range from 300 to 1100 K under pressures up to 14 GPa using large-volume high-pressure devices and synchrotron radiation. The anharmonic effective pair potentials of Au, V (u) = au sup 2 + bu sup 3 , at 0.1 MPa, 6 and 14 GPa have been calculated. The pressure dependence of the thermal expansion coefficients has also been evaluated. The reliability of the anharmonic correction proposed on the basis of the Anderson scale has been discussed.

  1. A high temperature interparticle potential for an alternative gauge model

    International Nuclear Information System (INIS)

    Doria, R.M.

    1984-01-01

    A thermal Wilson loop for a model with two gauge fields associated with the same gauge group is discussed. Deconfinement appears at high temperature. It is not possible however specify the colour of the deconfined matter. (Author) [pt

  2. [Potential of using inertial sensors in high level sports].

    Science.gov (United States)

    Ruzova, T K; Andreev, D A; Shchukin, A I

    2013-01-01

    The article thoroughly covers development of wireless inertial sensors technology in medicine. The authors describe main criteria of diagnostic value of inertial sensors, advantages and prospects of using these systems in sports medicine, in comparison with other conventional methods of biomechanical examination in sports medicine. The results obtained necessitate further development of this approach, specifically creation of algorithms and methods of biomechanic examination of highly qualified athletes in high achievements sports.

  3. Prevalence of Substance Abuse among High School Students in 2015-2016 Academic Year in Yazd City, Iran

    Directory of Open Access Journals (Sweden)

    Mahmood Vakili

    2016-10-01

    Full Text Available Abstract Introduction: Substance abuse is a common problem and a major public health dilemma with a high incidence of morbidity and mortality. Therefore, due to the increase of drug abuse in recent years, especially among young people and its complications, including loss of life, unwanted pregnancy, suicide commitment, as well as violence and given that our country has a young population, so the present study, aimed to investigate the substance abuse among the students in Yazd, a central city in Iran. Materials and methods: In this cross sectional study 1020 students studying in high school (the first period - the second period were investigated in the 2015-2016 academic year in the city of Yazd. Multi-stage sampling method using cluster and stratified sampling was used. Information were collected through a standardized questionnaire based on World Health Organization method known as Global school-based student health survey (GSHS which was translated to Persian. After completion of the questionnaire by students, the collected data were analyzed by SPSS software version 16 and through statistical tests of significance. Results: The results showed 18.1% of students had at least one history of drug use. 9.5% of students had a history of cannabis use, 12.5% had a history of amphetamines use, 10.8% had a history of taking psychotropic pills, 12.2% had a history of heroin use, 12.9% had a history of opium use, and finally, 9.6% had a history of crack use. There was no significant association between parents education and drug abuse in students. Conclusion: According to high prevalence and diversity of substance abuse among students, recommend educational program in school and parents supervision. Promotion of parents and teachers knowledge about symptoms of abuse is needed. Family support of adolescents is effective for prevention. 

  4. Galactomyces geotrichum - moulds from dairy products with high biotechnological potential.

    Science.gov (United States)

    Grygier, Anna; Myszka, Kamila; Rudzińska, Magdalena

    2017-01-01

    The article reviews the properties of the Galactomyces geotrichum species, the mould that is most important for the dairy industry. G. geotrichum mould has been isolated from milk, cheeses and alcoholic beverage. Its presence in food products makes it possible to obtain a characteristic aroma and taste, which corresponds to the needs and preferences of consumers. G. geotrichum plays an important role in ecology, where the mould is employed for the degradation of various hazardous substances and wastewater treatment. It has also been found to have potential for biofuel production. In addition to this, G. geotrichum can be applicable in two further major areas: agriculture and health protection.

  5. Potentialities in electronics of new high critical temperature superconductors

    International Nuclear Information System (INIS)

    Hartemann, P.

    1989-01-01

    The main electronic applications of superconductors involve the signal processing, the electromagnetic wave detection and the magnetometry. Characteristics of devices based on conventional superconductors cooled by liquid helium are given and the changes induced by incorporating high-temperature superconductors are estimated. After a survey of new superconductor properties, the superconducting devices for analog or digital signal processing are reviewed. The gains predicted for high-temperature superconducting analog devices are considered in greater detail. Different sections deal with the infrared or (sub)millimeter wave detection. The most sensitive apparatuses for magnetic measurements are based on SQUIDs. Features of SQUIDs made of granular high-temperature superconducting material samples (grain boundaries behave as barriers of intrinsic junctions) are discussed [fr

  6. Academic dishonsty

    African Journals Online (AJOL)

    User

    This study attempted to investigate students' self reported academic dishonesty in Ethiopian ... university programs can play a key role in ... serious problem in establishing academic ... and Rocha 2006); Asian-Pacific, ... and self-adjustment mediates the ..... In my suggestion, it is better that ..... Comparative and International.

  7. High efficiency USC power plant - present status and future potential

    Energy Technology Data Exchange (ETDEWEB)

    Blum, R. [Faelleskemikerne I/S Fynsvaerket (Denmark); Hald, J. [Elsam/Elkraft/TU Denmark (Denmark)

    1998-12-31

    Increasing demand for energy production with low impact on the environment and minimised fuel consumption can be met with high efficient coal fired power plants with advanced steam parameters. An important key to this improvement is the development of high temperature materials with optimised mechanical strength. Based on the results of more than ten years of development a coal fired power plant with an efficiency above 50 % can now be realised. Future developments focus on materials which enable an efficiency of 52-55 %. (orig.) 25 refs.

  8. High efficiency USC power plant - present status and future potential

    Energy Technology Data Exchange (ETDEWEB)

    Blum, R [Faelleskemikerne I/S Fynsvaerket (Denmark); Hald, J [Elsam/Elkraft/TU Denmark (Denmark)

    1999-12-31

    Increasing demand for energy production with low impact on the environment and minimised fuel consumption can be met with high efficient coal fired power plants with advanced steam parameters. An important key to this improvement is the development of high temperature materials with optimised mechanical strength. Based on the results of more than ten years of development a coal fired power plant with an efficiency above 50 % can now be realised. Future developments focus on materials which enable an efficiency of 52-55 %. (orig.) 25 refs.

  9. Systematic high-resolution assessment of global hydropower potential

    NARCIS (Netherlands)

    Hoes, Olivier A C; Meijer, Lourens J J; Van Der Ent, Ruud J.|info:eu-repo/dai/nl/364164794; Van De Giesen, Nick C.

    2017-01-01

    Population growth, increasing energy demand and the depletion of fossil fuel reserves necessitate a search for sustainable alternatives for electricity generation. Hydropower could replace a large part of the contribution of gas and oil to the present energy mix. However, previous high-resolution

  10. The effect of the flipped classroom on urban high school students' motivation and academic achievement in a high school science course

    Science.gov (United States)

    Dixon, Keshia L.

    This study investigated the effect of the flipped classroom on urban high school students' motivation and academic achievement in a high school science course. In this quantitative study, the sample population was comprised of North Star High School 12th grade students enrolled in human anatomy and physiology. A quasi-experimental, pretest-posttest non-equivalent group design was conducted. After receipt of Liberty University Institutional Review Board approval and the school district's Department of Research and Evaluation for School Improvement, students completed a pretest comprised of the Science Motivation Questionnaire II (SMQ-II) and the Human Anatomy and Physiology Unit Test. Participants in the experimental group engaged in the treatment, the flipped classroom, using instructional materials on the educational website, Edmodo(TM), and applied content material taught using hands-on activities inclusive of assigned laboratory experiments. Participants in the control group received instruction using traditional face-to-face lecture-homework format while also engaging in assigned laboratory experiments. After the completion of the treatment all participants completed a posttest. Data from both the pretest and posttest was statistically analyzed individually using two separate one-way ANOVA/ANCOVA analyses; and researcher reported the results of the statistical analyses. After completion of the analyses, and interpretation of the results, recommendations for future research were given.

  11. Potential high efficiency solar cells: Applications from space photovoltaic research

    Science.gov (United States)

    Flood, D. J.

    1986-01-01

    NASA involvement in photovoltaic energy conversion research development and applications spans over two decades of continuous progress. Solar cell research and development programs conducted by the Lewis Research Center's Photovoltaic Branch have produced a sound technology base not only for the space program, but for terrestrial applications as well. The fundamental goals which have guided the NASA photovoltaic program are to improve the efficiency and lifetime, and to reduce the mass and cost of photovoltaic energy conversion devices and arrays for use in space. The major efforts in the current Lewis program are on high efficiency, single crystal GaAs planar and concentrator cells, radiation hard InP cells, and superlattice solar cells. A brief historical perspective of accomplishments in high efficiency space solar cells will be given, and current work in all of the above categories will be described. The applicability of space cell research and technology to terrestrial photovoltaics will be discussed.

  12. The potential for EMS Maglev using high temperature superconductors

    Energy Technology Data Exchange (ETDEWEB)

    Goodall, R [Loughborough Univ. (United Kingdom); Macleod, C [Loughborough Univ. (United Kingdom); El-Abbar, A [Loughborough Univ. (United Kingdom); Jones, H [Oxford Univ. (United Kingdom); Jenkins, R [Oxford Univ. (United Kingdom); Campbell, A [Cambridge Univ. (United Kingdom)

    1996-12-31

    Various aspects relating to the use of high temperature superconducting materials in iron-cored magnets for Maglev are considered. The particular emphasis is upon direct control of the superconducting coils, and a control analysis is undertaken to assess the requirements. Experimental results form tests conducted to determine how a superconducting magnet will perform under the conditions required for Maglev are included, and the final section determines the likely effect on the magnet design of using superconducting rather than normal coils. (orig.)

  13. Potential Energy Surfaces and Dynamics of High Energy Species

    Science.gov (United States)

    2009-04-13

    explored include ionic liquids and a range of high-nitrogen content and nitrogen-oxygen content species. Polyhedral oligomeric silisesquioxanes are...Approved for Public Release 13. SUPPLEMENTARY NOTES 14. ABSTRACT Several papers on ionic liquids have been published or submitted as a result of this...in energetic ionic liquids . These are variously substituted triazolium, tertazolium, and pentazolium cations. The heats of formation of all species

  14. Potential ceramics processing applications with high-energy electron beams

    International Nuclear Information System (INIS)

    Struve, K.W.; Turman, B.N.

    1993-01-01

    High-energy, high-current electron beams may offer unique features for processing of ceramics that are not available with any other heat source. These include the capability to instantaneously heat to several centimeters in depth, to preferentially deposit energy in dense, high-z materials, to process at atmospheric pressures in air or other gases, to have large control over heating volume and heating rate, and to have efficient energy conversion. At a recent workshop organized by the authors to explore opportunities for electron beam processing of ceramics, several applications were identified for further development. These were ceramic joining, fabrication of ceramic powders, and surface processing of ceramics. It may be possible to join ceramics by either electron-beam brazing or welding. Brazing with refractory metals might also be feasible. The primary concern for brazing is whether the braze material can wet to the ceramic when rapidly heated by an electron beam. Raw ceramic powders, such as silicon nitride and aluminum nitride, which are difficult to produce by conventional techniques, could possibly be produced by vaporizing metals in a nitrogen atmosphere. Experiments need to be done to verify that the vaporized metal can fully react with the nitrogen. By adjusting beam parameters, high-energy beams can be used to remove surface flaws which are often sites of fracture initiation. They can also be used for surface cleaning. The advantage of electron beams rather than ion beams for this application is that the heat deposition can be graded into the material. The authors will discuss the capabilities of beams from existing machines for these applications and discuss planned experiments

  15. The effective matter potential for highly relativistic neutrinos

    International Nuclear Information System (INIS)

    Konstandin, Thomas; Ohlsson, Tommy

    2006-01-01

    We investigate matter effects on highly relativistic neutrinos. The self-energy of neutrinos is determined in an electron or neutrino background taking into account resonance and finite width effects of the gauge bosons. We find minor changes compared to the formerly used formula for the propagator function and large deviations of the effective width from the decay width of the gauge bosons considering higher moments of the electron or neutrino distribution function

  16. Academic capitalism and academic culture: A case study.

    Directory of Open Access Journals (Sweden)

    Pilar Mendoza

    2008-12-01

    Full Text Available This case study investigated the impact of academic capitalism on academic culture by examining the perspectives of faculty members in an American academic department with significant industrial funding. The results of this study indicate that faculty members believe that the broad integrity of the academic culture remains unaffected in this department and they consider industrial sponsorship as a highly effective vehicle for enhancing the quality of education of students and pursuing their scientific interests. This study provides valuable insights to federal and institutional policiescreated to foster industry-academia partnerships and commercialization of academic research.

  17. Potential of high-average-power solid state lasers

    International Nuclear Information System (INIS)

    Emmett, J.L.; Krupke, W.F.; Sooy, W.R.

    1984-01-01

    We discuss the possibility of extending solid state laser technology to high average power and of improving the efficiency of such lasers sufficiently to make them reasonable candidates for a number of demanding applications. A variety of new design concepts, materials, and techniques have emerged over the past decade that, collectively, suggest that the traditional technical limitations on power (a few hundred watts or less) and efficiency (less than 1%) can be removed. The core idea is configuring the laser medium in relatively thin, large-area plates, rather than using the traditional low-aspect-ratio rods or blocks. This presents a large surface area for cooling, and assures that deposited heat is relatively close to a cooled surface. It also minimizes the laser volume distorted by edge effects. The feasibility of such configurations is supported by recent developments in materials, fabrication processes, and optical pumps. Two types of lasers can, in principle, utilize this sheet-like gain configuration in such a way that phase and gain profiles are uniformly sampled and, to first order, yield high-quality (undistorted) beams. The zig-zag laser does this with a single plate, and should be capable of power levels up to several kilowatts. The disk laser is designed around a large number of plates, and should be capable of scaling to arbitrarily high power levels

  18. Academic detailing.

    Science.gov (United States)

    Shankar, P R; Jha, N; Piryani, R M; Bajracharya, O; Shrestha, R; Thapa, H S

    2010-01-01

    There are a number of sources available to prescribers to stay up to date about medicines. Prescribers in rural areas in developing countries however, may not able to access some of them. Interventions to improve prescribing can be educational, managerial, and regulatory or use a mix of strategies. Detailing by the pharmaceutical industry is widespread. Academic detailing (AD) has been classically seen as a form of continuing medical education in which a trained health professional such as a physician or pharmacist visits physicians in their offices to provide evidence-based information. Face-to-face sessions, preferably on an individual basis, clear educational and behavioural objectives, establishing credibility with respect to objectivity, stimulating physician interaction, use of concise graphic educational materials, highlighting key messages, and when possible, providing positive reinforcement of improved practices in follow-up visits can increase success of AD initiatives. AD is common in developed countries and certain examples have been cited in this review. In developing countries the authors have come across reports of AD in Pakistan, Sudan, Argentina and Uruguay, Bihar state in India, Zambia, Cuba, Indonesia and Mexico. AD had a consistent, small but potentially significant impact on prescribing practices. AD has much less resources at its command compared to the efforts by the industry. Steps have to be taken to formally start AD in Nepal and there may be specific hindering factors similar to those in other developing nations.

  19. Anterior cruciate ligament-derived cells have high chondrogenic potential.

    Science.gov (United States)

    Furumatsu, Takayuki; Hachioji, Motomi; Saiga, Kenta; Takata, Naoki; Yokoyama, Yusuke; Ozaki, Toshifumi

    2010-01-01

    Anterior cruciate ligament (ACL)-derived cells have a character different from medial collateral ligament (MCL)-derived cells. However, the critical difference between ACL and MCL is still unclear in their healing potential and cellular response. The objective of this study was to investigate the mesenchymal differentiation property of each ligament-derived cell. Both ligament-derived cells differentiated into adipogenic, osteogenic, and chondrogenic lineages. In chondrogenesis, ACL-derived cells had the higher chondrogenic property than MCL-derived cells. The chondrogenic marker genes, Sox9 and alpha1(II) collagen (Col2a1), were induced faster in ACL-derived pellets than in MCL-derived pellets. Sox9 expression preceded the increase of Col2a1 in both pellet-cultured cells. However, the expression level of Sox9 and a ligament/tendon transcription factor Scleraxis did not parallel the increase of Col2a1 expression along with chondrogenic induction. The present study demonstrates that the balance between Sox9 and Scleraxis have an important role in the chondrogenic differentiation of ligament-derived cells. Copyright 2009 Elsevier Inc. All rights reserved.

  20. Fast Food Consumption and Academic Growth in Late Childhood.

    Science.gov (United States)

    Purtell, Kelly M; Gershoff, Elizabeth T

    2015-08-01

    The objective of this study is to examine the associations between fast food consumption and the academic growth of 8544 fifth-grade children in reading, math, and science. This study uses direct assessments of academic achievement and child-reported fast food consumption from a nationally representative sample of kindergartners followed through eighth grade. More than two thirds of the sample reported some fast food consumption; 20% reported consuming at least 4 fast food meals in the prior week. Fast food consumption during fifth grade predicted lower levels of academic achievement in all 3 subjects in eighth grade, even when fifth grade academic scores and numerous potential confounding variables, including socioeconomic indicators, physical activity, and TV watching, were controlled for in the models. These results provide initial evidence that high levels of fast food consumption are predictive of slower growth in academic skills in a nationally representative sample of children. © The Author(s) 2014.

  1. Slow high-frequency effects in mechanics: problems, solutions, potentials

    DEFF Research Database (Denmark)

    Thomsen, Jon Juel

    2005-01-01

    – an apparent change in the stiffness associated with an equilibrium; Biasing – a tendency for a system to move towards a particular state which does not exist or is unstable without HFE; and Smoothening – a tendency for discontinuities to be apparently smeared out by HFE. The effects and a method for analyzing...... and compared: The Method of Direct Separation of Motions, the Method of Averaging, and the Method of Multiple Scales. The tutorial concludes by suggesting that more vibration experts, researchers and students should know about HFE effects, for the benefit not only of general vibration troubleshooting, but also......Strong high-frequency excitation (HFE) may change the ‘slow’ (i.e. effective or average) properties of mechanical systems, e.g. their stiffness, natural frequencies, equilibriums, equilibrium stability, and bifurcation paths. This tutorial describes three general HFE effects: Stiffening...

  2. Slow high-frequency effects in mechanics: problems, solutions, potentials

    DEFF Research Database (Denmark)

    Thomsen, Jon Juel

    – an apparent change in the stiffness associated with an equilibrium; Biasing – a tendency for a system to move towards a particular state which does not exist or is unstable without HFE; and Smoothening – a tendency for discontinuities to be apparently smeared out by HFE. The effects and a method for analyzing...... and compared: The Method of Direct Separation of Motions, the Method of Averaging, and the Method of Multiple Scales. The tutorial concludes by suggesting that more vibration experts, researchers and students should know about HFE effects, for the benefit not only of general vibration troubleshooting, but also......Strong high-frequency excitation (HFE) may change the ‘slow’ (i.e. effective or average) properties of mechanical systems, e.g. their stiffness, natural frequencies, equilibriums, equilibrium stability, and bifurcation paths. This tutorial describes three general HFE effects: Stiffening...

  3. Potentially lethal effects of astrophysical high energy explosive events

    International Nuclear Information System (INIS)

    Zarauza, Dario; Martin, Osmel; Rolando Cardenas

    2007-01-01

    In this work we compare the biological extinction risks posed by different types of high energy explosive events, if they occur at distances close enough to inhabited planets. These events are several kinds of supernovae and gamma ray bursts. We mainly consider the ozone depletion, leaving other effects, as photon retransmission and muon showers, for future work. In order to estimate the damage on ozonosphere, we use a simple analytical model for ozone depletion. We also mention some hints to look for the signatures of these events on Earth biogeochemical record, and evaluate the possibility of applying these results to the astrobiologically interesting sample of stars gathered by Porto de Mello, del Peloso and Ghezzi. (Author)

  4. Liquid crystals: high technology materials for potential applications

    International Nuclear Information System (INIS)

    Saeed, M.A.; Badaruddin; Rizvi, T.Z.

    1993-01-01

    Liquid crystals have very rapidly emerged as a basis of many high technology fields within the last few decades. These materials because of their intriguing physical properties are regarded as the fourth state of matter. At present the applications of liquid crystals are established in digital display devices, electro-optical switches, optical computing, acousto-optics, thermo-indicators, laser thermo-recording, photo-chemical image recording and optical communication networks. More recently due to the concept of molecularly based electronics (MBE): the logical extreme for miniaturization of electronic device, liquid crystals are foreseen to play a vital role in the future optics based technologies. This paper gives a brief introduction to liquid crystals, the types of meso phases found in these materials together with their applications in research and industry. Some technical details of the construction liquid crystal cells for some typical applications in digital displays and other electro optical devices have also been discussed with special emphasis on relevant physical processes occurring at molecular level. (author)

  5. Potential of ultrafine grained materials as high performance penetrator materials

    Directory of Open Access Journals (Sweden)

    Lee C.S.

    2012-08-01

    Full Text Available The shear formability and the metal jet formability are important for the kinetic energy penetrator and the chemical energy penetrator, respectively. The shear formability of ultrafine grained (UFG steel was examined, mainly focusing on the effects of the grain shape on the shear characteristics. For this purpose, UFG 4130 steel having the different UFG structures, the lamellar UFG and the equiaxed UFG, was prepared by equal channel angular pressing (ECAP. The lamellar UFG steel exhibited more sharper and localized shear band formation than the equiaxed UFG steel. This is because a lamellar UFG structure was unfavourable against grain rotation which is a main mechanism of the band propagation in UFG materials. Meanwhile, the metal jet formability of UFG OFHC Cu also processed by ECAP was compared to that of coarse grained (CG one by means of dynamic tensile extrusion (DTE tests. CG OFHC Cu exhibited the higher DTE ductility, i.e. better metal jet stability, than UFG OFHC Cu. The initial high strength and the lack of strain hardenability of UFG OFHC Cu were harmful to the metal jet formability.

  6. Potential for erosion corrosion of SRS high level waste tanks

    International Nuclear Information System (INIS)

    Zapp, P.E.

    1994-01-01

    SRS high-level radioactive waste tanks will not experience erosion corrosion to any significant degree during slurry pump operations. Erosion corrosion in carbon steel structures at reported pump discharge velocities is dominated by electrochemical (corrosion) processes. Interruption of those processes, as by the addition of corrosion inhibitors, sharply reduces the rate of metal loss from erosion corrosion. The well-inhibited SRS waste tanks have a near-zero general corrosion rate, and therefore will be essentially immune to erosion corrosion. The experimental data on carbon steel erosion corrosion most relevant to SRS operations was obtained at the Hanford Site on simulated Purex waste. A metal loss rate of 2.4 mils per year was measured at a temperature of 102 C and a slurry velocity comparable to calculated SRS slurry velocities on ground specimens of the same carbon steel used in SRS waste tanks. Based on these data and the much lower expected temperatures, the metal loss rate of SRS tanks under waste removal and processing conditions should be insignificant, i.e. less than 1 mil per year

  7. Potential host media for a high-level waste repository

    Energy Technology Data Exchange (ETDEWEB)

    Hustrulid, W

    1982-01-01

    Earlier studies of burial of radioactive wastes in geologic repositories had concentrated on salt formations for well-publicized reasons. However, under the Carter administration, significant changes were made in the US nuclear waste management program. Changes which were made were: (1) expansion of the number of rock types under consideration; (2) adoption of the multiple-barrier approach to waste containment; (3) additional requirements for waste retrieval; and (4) new criteria proposed by the Nuclear Regulatory Commission for the isolation of high-level waste in geologic repositories. Results of the studies of different types of rocks as repository sites are summarized herein. It is concluded that each generic rock type has certain advantages and disadvantages when considered from various aspects of the waste disposal problem and that characteristics of rocks are so varied that a most favorable or least favorable rock type cannot be easily identified. This lack of definitive characteristics of rocks makes site selection and good engineering barriers very important for containment of the wastes. (BLM)

  8. Carbon nanotubes/cobalt sulfide composites as potential high-rate and high-efficiency supercapacitors

    Science.gov (United States)

    Chen, Chia-Ying; Shih, Zih-Yu; Yang, Zusing; Chang, Huan-Tsung

    2012-10-01

    We have prepared carbon nanotube (CNT)/cobalt sulfide (CoS) composites from cobalt nitrate, thioacetamide, and CNTs in the presence of poly(vinylpyrrolidone). CNT/CoS composites are deposited onto fluorine-doped tin oxide glass substrates and then subjected to simple annealing at 300 °C for 0.5 h to fabricate CNT/CoS electrodes. Data collected from Raman spectroscopy, X-ray photoelectron spectroscopy, high-resolution transmission electron microscopy, and d-spacing reveal the changes in the CoS structures and crystalline lattices after annealing. Cyclic voltammetry results reveal that the annealed CNT/CoS composite electrodes yield values of 2140 ± 90 and 1370 ± 50 F g-1 for specific capacitance at scan rates of 10 and 100 mV s-1, respectively. To the best of our knowledge, the annealed CNT/CoS composite electrodes provide higher specific capacitance relative to other reported ones at a scan rate of 100 mV s-1. CNT/CoS composite electrodes yield a power density of 62.4 kW kg-1 at a constant discharge current density of 217.4 A g-1. With such a high-rate capacity and power density, CNT/CoS composite supercapacitors demonstrate great potential as efficient energy storage devices.

  9. Recycling potential for low voltage and high voltage high rupturing capacity fuse links.

    Science.gov (United States)

    Psomopoulos, Constantinos S; Barkas, Dimitrios A; Kaminaris, Stavros D; Ioannidis, George C; Karagiannopoulos, Panagiotis

    2017-12-01

    Low voltage and high voltage high-rupturing-capacity fuse links are used in LV and HV installations respectively, protecting mainly the LV and HV electricity distribution and transportation networks. The Waste Electrical and Electronic Equipment Directive (2002/96/EC) for "Waste of electrical and electronic equipment" is the main related legislation and as it concerns electrical and electronic equipment, it includes electric fuses. Although, the fuse links consist of recyclable materials, only small scale actions have been implemented for their recycling around Europe. This work presents the possibilities for material recovery from this specialized industrial waste for which there are only limited volume data. Furthermore, in order to present the huge possibilities and environmental benefits, it presents the potential for recycling of HRC fuses used by the Public Power Corporation of Greece, which is the major consumer for the country, but one of the smallest ones in Europe and globally, emphasizing in this way in the issue. According to the obtained results, fuse recycling could contribute to the effort for minimize the impacts on the environment through materials recovery and reduction of the wastes' volume disposed of in landfills. Copyright © 2017 Elsevier Ltd. All rights reserved.

  10. academic libraries

    African Journals Online (AJOL)

    Information Impact: Journal of Information and Knowledge Management

    Information Impact: Journal of Information and Knowledge Management ... Key words: academic libraries, open access, research, researchers, technology ... European commission (2012) reports that affordable and easy access to the results ...

  11. Academic Publications

    OpenAIRE

    Francisco H C Felix

    2017-01-01

    Alternative modes of academic publication. What it is: Page for the dissemination of academic papers in alternative formats. Aimed at the diffusion of the idea of open publication, or open access publication, a branch of open science, a multidisciplinary movement that seeks to modify the paradigm of knowledge production that centralizes it and prevents its spreading. Historically, Western tradition has become firmly rooted in the free dissemination of knowledge among peers. However, the c...

  12. Nutritional quality of diet and academic performance in Chilean students.

    Science.gov (United States)

    Correa-Burrows, Paulina; Burrows, Raquel; Blanco, Estela; Reyes, Marcela; Gahagan, Sheila

    2016-03-01

    To explore associations between the nutritional quality of diet at age 16 years and academic performance in students from Santiago, Chile. We assessed the nutritional quality of diet, using a validated food frequency questionnaire, in 395 students aged 16.8 ± 0.5 years. Depending on the amount of saturated fat, fibre, sugar and salt in the foods, diet was categorized as unhealthy, fair or healthy. Academic performance was assessed using high school grade-point average (GPA) and tests for college admission in language and mathematics. Academic results on or above the 75th percentile in our sample were considered good academic performance. We tested associations between nutritional quality of diet and good academic performance using logistic regression models. We considered sociodemographic, educational and body-mass index (BMI) factors as potential confounders. After controlling for potential confounding factors, an unhealthy diet at age 16 years was associated with reduced academic performance. Compared to participants with healthy diets, those with unhealthy diets were significantly less likely to perform well based on language tests (odds ratio, OR: 0.42; 95% confidence interval, CI: 0.18-0.98) mathematics tests (OR: 0.35; 95% CI: 0.15-0.82) or GPA (OR: 0.22; 95% CI: 0.09-0.56). In our sample, excessive consumption of energy-dense, low-fibre, high-fat foods at age 16 years was associated with reduced academic performance.

  13. Academic Marketing

    Directory of Open Access Journals (Sweden)

    Ecaterina Daniela ZECA

    2017-06-01

    Full Text Available Academic Marketing is an investment in a future dominated by The Forth Industrial Revolution and Globalization and not an expense. This aspect will basically alter our way to teach and to learn. In its dimensions, arguably changes will be like anything we has seen before. We try to assess how will be all unfold but, anyway, academic field response at this challenge should be integrated and comprehensive, involving all stakeholders both public and private sectors, because these changes herald upheaval of whole organizations. The educational service is a special one, delivered today but with effects in the future, the future of the individual, the future of generation, the future of nations. The educational service policy adapted to the requirements of time, brings to the front the opportunity of academic marketing. To analyze demand in a professional way, to measure trends and correlated university programs with the forecast demand for jobs, it is the subject. In the case of academic education, we are talking also about cost, distribution and promotion policies, but being a special service we also discuss about ethic boundaries. This work is an open chapter focusing studies on academic megamarketing, the work keeping up with the pace of change, students enrolment mobility, overtakes job market, and an imposed win-win-win formula, applied for students, local community and academic field.

  14. The impact of including children with intellectual disability in general education classrooms on the academic achievement of their low-, average-, and high-achieving peers.

    Science.gov (United States)

    Sermier Dessemontet, Rachel; Bless, Gérard

    2013-03-01

    This study aimed at assessing the impact of including children with intellectual disability (ID) in general education classrooms with support on the academic achievement of their low-, average-, and high-achieving peers without disability. A quasi-experimental study was conducted with an experimental group of 202 pupils from classrooms with an included child with mild or moderate ID, and a control group of 202 pupils from classrooms with no included children with special educational needs (matched pairs sample). The progress of these 2 groups in their academic achievement was compared over a period of 1 school year. No significant difference was found in the progress of the low-, average-, or high-achieving pupils from classrooms with or without inclusion. The results suggest that including children with ID in primary general education classrooms with support does not have a negative impact on the progress of pupils without disability.

  15. The "Second Academic Revolution": Interpretations of Academic Entrepreneurship

    Science.gov (United States)

    Zheng, Peijun

    2010-01-01

    The number and scope of faculty and institutions involved in academic entrepreneurship continues to expand, and this has significant implications for universities, involving potentially wonderful opportunities but also dire risks. This paper looks beyond academic capitalism, a theory that currently dominates the study of higher education, by…

  16. Are You an Academic Stock or an Academic Bond?

    Science.gov (United States)

    Berns, Gregory

    2008-01-01

    Academic scholarship is a business, and just like any other business, it is driven largely by the incentive for profit. Those profits may or may not be financial in nature, but the potential for reward, whether it is measured in terms of a promotion or of intellectual property, underlies whatever people do in higher education. Academics don't…

  17. The Relationship between Self-Esteem and Academic Achievement in High Ability Students: Evidence from the Wollongong Youth Study

    Science.gov (United States)

    Vialle, Wilma; Heaven, Patrick C. L.; Ciarrochi, Joseph

    2015-01-01

    The relationship between self-esteem and academic achievement is one that is regarded by many educators as a well-established fact. This belief has been often invoked in order to argue against the provision of ability grouping for gifted students. Refuting that commonly-held belief, this research examined the relationship between self-esteem and…

  18. Academic Attitudes and Achievement in Students of Urban Public Single-Sex and Mixed-Sex High Schools

    Science.gov (United States)

    Else-Quest, Nicole M.; Peterca, Oana

    2015-01-01

    Publicly funded single-sex schooling (SSS) has proliferated in recent years and is touted as a remedy to gaps in academic attitudes and achievement, particularly for low-income students of color. Research on SSS is rife with limitations, stemming from selective admissions processes, selection effects related to socioeconomic status, a lack of…

  19. Recognizing Internet Addiction: Prevalence and Relationship to Academic Achievement in Adolescents Enrolled in Urban and Rural Greek High Schools

    Science.gov (United States)

    Stavropoulos, Vasilis; Alexandraki, Kiriaki; Motti-Stefanidi, Frosso

    2013-01-01

    This study aims: a) to estimate the prevalence of internet addiction among adolescents of urban and rural areas in Greece, b) to examine whether the Internet Addiction Test cut-off point is applicable to them and c) to investigate the phenomenon's association with academic achievement. Participants were 2090 adolescents (mean age 16, 1036 males,…

  20. The Influence of Neighborhood Characteristics and Parenting Practices on Academic Problems and Aggression Outcomes among Moderately to Highly Aggressive Children

    Science.gov (United States)

    Barry, Tammy D.; Lochman, John E.; Fite, Paula J.; Wells, Karen C.; Colder, Craig R.

    2012-01-01

    The current study utilized a longitudinal design to examine the effects of neighborhood and parenting on 120 at-risk children's academic and aggressive outcomes, concurrently and at two later timepoints during the transition to middle school. Random effects regression models were estimated to examine whether neighborhood characteristics and harsh…

  1. Virtual Learning Simulations in High School: Effects on Cognitive and Non-cognitive Outcomes and Implications on the Development of STEM Academic and Career Choice

    OpenAIRE

    Thisgaard, Malene; Makransky, Guido

    2017-01-01

    The present study compared the value of using a virtual learning simulation compared to traditional lessons on the topic of evolution, and investigated if the virtual learning simulation could serve as a catalyst for STEM academic and career development, based on social cognitive career theory. The investigation was conducted using a crossover repeated measures design based on a sample of 128 high school biology/biotech students. The results showed that the virtual learning simulation increas...

  2. Self-regulatory mode (locomotion and assessment), well-being (subjective and psychological), and exercise behavior (frequency and intensity) in relation to high school pupils’ academic achievement

    OpenAIRE

    Danilo Garcia; Alexander Jimmefors; Fariba Mousavi; Lillemor Adrianson; Patricia Rosenberg; Trevor Archer

    2015-01-01

    Background. Self-regulation is the procedure implemented by an individual striving to reach a goal and consists of two inter-related strategies: assessment and locomotion. Moreover, both subjective and psychological well-being along exercise behaviour might also play a role on adolescents academic achievement. Method. Participants were 160 Swedish high school pupils (111 boys and 49 girls) with an age mean of 17.74 (sd = 1.29). We used the Regulatory Mode Questionnaire to measure self-regulat...

  3. Academic librarianship today

    CERN Document Server

    2017-01-01

    Intended for use by both librarians and students in LIS programs, Academic Librarianship Today is the most current, comprehensive overview of the field available today. Key features include: Each chapter was commissioned specifically for this new book, and the authors are highly regarded academic librarians or library school faculty— or both Cutting-edge topics such as open access, copyright, digital curation and preservation, emerging technologies, new roles for academic librarians, cooperative collection development and resource sharing, and patron-driven acquisitions are explored in depth Each chapter ends with thought-provoking questions for discussion and carefully constructed assignments that faculty can assign or adapt for their courses The book begins with Gilman’s introduction, an overview that briefly synthesizes the contents of the contributors’ chapters by highlighting major themes. The main part of the book is organized into three parts: The Academic Library Landscape Today, ...

  4. Constructivism, Dewey, and Academic Advising

    Science.gov (United States)

    Xyst, Kurt

    2016-01-01

    Many published scholars argue for constructivism as a basis for academic advising theory. However, few have discussed the commensurate ontological assumptions of constructivist thinking. Potential problems with the metaphysical view of the student in contemporary academic advising may be attributable to constructivism. John Dewey's critique of…

  5. Expatriate academics

    DEFF Research Database (Denmark)

    Selmer, Jan; Lauring, Jakob

    2011-01-01

    Purpose – The literature on business expatriates has been increasing rapidly, but research on expatriate academics has remained scant, despite the apparent increasing globalisation of the academic world. Therefore, more research is needed on the latter group of expatriates. This paper aims to fill...... some of the gaps. Design/methodology/approach – A questionnaire was directed electronically towards expatriate academics occupying regular positions in science faculty departments in universities in northern Europe. Findings – Results showed that job clarity was the dominating job factor with strong...... relationships with all of the five investigated work outcome variables, work adjustment, work performance, work effectiveness, job satisfaction, and time to proficiency. Job conflict and job freedom had an association with some of the work outcome variables but not with all of them. Neither workload nor job...

  6. Academic Allies

    DEFF Research Database (Denmark)

    Byberg, Rebekka Birkebo

    the national associations of European law: Fédération Internationale pour le Droit Européen, the European law journal Common Market Law Review, and the ITL project, carried out at the European University Institute.It carefully documents an alliance between academics and community actors with the aim...... of providing academic support to the constitutional claim, and it argues that the academic discipline of European law was built and developed through a circular attribution of legal ideas, legitimacy, and self-image between the European Court of Justice, the Commission, and academia –most particularly so......This doctoral thesis explores the key transnational institutions of European law academia and their role in the creation of a constitutional legal practice in the European Community from 1961 to 1993. Consisting of three case studies, it investigates the transnational federation gathering...

  7. Social competence and parental practices in adolescents with high and low academic achievement / Competência social e práticas educativas parentais em adolescentes com alto e baixo rendimento acadêmico

    Directory of Open Access Journals (Sweden)

    Graziela Sapienza

    2009-01-01

    Full Text Available This paper investigated the relations between social competence, parental practices and academic performance in adolescents. 66 adolescents took part in the study and they were divided in two groups: high and low academic performance. The tools used in this research were CBCL and YSR (Achenbach, 1991, and IEP (Gomide, 2006. The results showed that adolescents of high academic achievements are perceived by the parents as socially competent and are raised with more positive parental practices. The data indicated that academic performance is also influenced by the social competence and the way the adolescents are educated by the parents. Those aspects should be considered in interventions that aim at promoting the improvement of academic performance and development of a behavior adjusted to the school.

  8. School Competence and Fluent Academic Performance: Informing Assessment of Educational Outcomes in Survivors of Pediatric Medulloblastoma.

    Science.gov (United States)

    Holland, Alice Ann; Hughes, Carroll W; Stavinoha, Peter L

    2015-01-01

    Academic difficulties are widely acknowledged but not adequately studied in survivors of pediatric medulloblastoma. Although most survivors require special education services and are significantly less likely than healthy peers to finish high school, measured academic skills are typically average. This study sought to identify potential factors associated with academic difficulties in this population and focused on school competence and fluent academic performance. Thirty-six patients (ages 7-18 years old) were recruited through the Departments of Neurosurgery and Neuro-Oncology at Children's Medical Center Dallas and Cook Children's Medical Center in Fort Worth, TX. Participants completed a neuropsychological screening battery including selected Woodcock-Johnson III Tests of Achievement subtests. Parents completed the Child Behavior Checklist. School competence was significantly correlated with measured academic skills and fluency. Basic academic skill development was broadly average, in contrast to significantly worse fluent academic performance. School competence may have utility as a measure estimating levels of educational success in this population. Additionally, academic difficulties experienced by childhood medulloblastoma survivors may be better captured by measuring deficits in fluent academic performance rather than skills. Identification of these potential factors associated with educational outcomes of pediatric medulloblastoma survivors has significant implications for research, clinical assessment, and academic services/interventions.

  9. ACADEMIC TRAINING

    CERN Multimedia

    Françoise Benz

    2002-01-01

    12, 13, 14, March LECTURE SERIES from 11.00 to 12.00 hrs - Auditorium, bldg. 500 POSTPONED! - Modern Project Management Methods - POSTPONED! By G. Vallet / Ed. Highware, Paris, F. Academic Training Françoise Benz Secretariat Tel. 73127 francoise.benz@cern.ch

  10. Academic Cloning.

    Science.gov (United States)

    Sikula, John P.; Sikula, Andrew F.

    1980-01-01

    The authors define "cloning" as an integral feature of all educational systems, citing teaching practices which reward students for closely reproducing the teacher's thoughts and/or behaviors and administrative systems which tend to promote like-minded subordinates. They insist, however, that "academic cloning" is not a totally…

  11. Academic Aspirations

    Science.gov (United States)

    Durant, Linda

    2013-01-01

    As colleges and universities become even more complex organizations, advancement professionals need to have the skills, experience, and academic credentials to succeed in this ever-changing environment. Advancement leaders need competencies that extend beyond fundraising, alumni relations, and communications and marketing. The author encourages…

  12. Academic Words and Academic Capitalism Academic Words and Academic Capitalism

    Directory of Open Access Journals (Sweden)

    Michael Billig

    2013-03-01

    Full Text Available

    Este artículo sugiere que esta época es la mejor y peor para la labor académica. La mejor en cuanto hay más publicaciones académicas que nunca. Y la peor porque sobra mucho de estas publicaciones. Trabajando en las condiciones competitivas del capitalismo académico, los académicos se sienten en la necesidad de continuar publicando, independientemente de que tengan algo que decir. Las presiones de publicar continuamente y promover la propia perspectiva se reflejan en la manera en la que los científicos sociales están escribiendo. Y es que los académicos utilizan un lenguaje técnico basado en sustantivos, con una precisión menor a la del lenguaje ordinario. Los estudiantes de postgrado han sido educados en esta manera de escribir como una condición previa a iniciarse en las ciencias sociales. Así, la naturaleza misma del capitalismo académico no sólo determina las condiciones en las que los académicos trabajan, sino que también afecta su manera de escribir.


    This paper suggests that it is the best and worst of times for academic work. It is the best of times because there are more academics publishing than ever before. It is the worst of times because there is much unnecessary publication. Working in the competitive conditions of academic capitalism, academics feel impelled to keep publishing, whether or not they have anything to say. The pressures to publish continually and to promote one’s own approach are reflected in the way that social scientists are writing. Academics use a noun-based technical language, which is less precise than ordinary language. Postgraduates are taught this way of writing as a precondition for entering the social sciences. In this way, the nature of academic capitalism not only determines the conditions under which academics are working but it affects the way that they are writing.

  13. A Langmuir probe system for high power RF-driven negative ion sources on high potential

    International Nuclear Information System (INIS)

    McNeely, P; Christ-Koch, S; Fantz, U; Dudin, S V

    2009-01-01

    A fully automated Langmuir probe system capable of operating simultaneously with beam extraction has been developed and commissioned for the negative hydrogen ion source testbeds at IPP Garching. It allows the measurement of temporal and spatial distributions of the plasma parameters within a single plasma pulse ( 10 18 m -3 ) and hot (T e > 10 eV) plasma with bi-Maxwellian electron energy distribution at low pressures. The plasma found near the plasma grid is very different being of low density (≤10 17 m -3 ) and very cold (T e < 2 eV). This plasma is also strongly influenced by the presence of caesium, the potential of the plasma grid, and if an ion beam is extracted from the source. Caesium strongly reduces the plasma potential of the source and enhances the negative ion density near the plasma grid. Extracting an ion beam is observed to reduce the electron density and increase the potential near the plasma grid. Applying a potential greater than the plasma potential to the plasma grid is found to significantly decrease the electron density near the plasma grid.

  14. Relationships between Perceived Parental Involvement in Homework, Student Homework Behaviors, and Academic Achievement: Differences among Elementary, Junior High, and High School Students

    Science.gov (United States)

    Núñez, J. C.; Suárez, N.; Rosário, P.; Vallejo, G.; Valle, A.; Epstein, J. L.

    2015-01-01

    This study aims to produce a deeper understanding of the relationship between perceived parental homework involvement (i.e., parental homework control and parental homework support), student homework behaviors (i.e., time spend on homework completion, time management, and amount of homework completed), and student academic achievement. Using…

  15. QED effects in high-Z atoms; three-body potentials

    International Nuclear Information System (INIS)

    Zygelman, B.

    1983-01-01

    Electromagnetic three-body potentials were first studied by Primakoff and Holstein. Later, Chamugan and Schweber rederived these potentials and pointed out that they might be important in highly relativistic systems, however, their formulation was basically nonrelativistic. Mittleman, in a series of papers, constructed configuration space equations that included three-body potentials. His derivation started from first principles i.e. QED, and the resulting three-body potentials are more general than the Primakoff-Holstein potentials. In this thesis the contribution to the binding energy of a simple high-Z ion from the three-body potentials is calculated. In addition, the nature and structure of these potentials in greater detail are studied. Some ambiguities that arise when the transition from Fock to configuration space is made are studied in detail

  16. Self-initiated expatriate academics

    DEFF Research Database (Denmark)

    Selmer, Jan; Lauring, Jakob

    2013-01-01

    In this chapter we examine self-initiated expatriate academics. Universities are to an increasing extent looking for talent beyond national boundaries. Accordingly, self-initiated expatriate academics represent a fast growing group of highly educated professionals who gain employment abroad...

  17. Understanding the factors that influence high science achievers' academic choices and intent to pursue or opt out of the hard sciences

    Science.gov (United States)

    Quihuis, Gisell

    Drawing on Eccles and her colleagues' Expectancy-Value model of academic behavior and choice, this dissertation study set out to serve three purposes: (1) to understand how high achieving high school students who aspire to science college degrees compare, in terms of motivational beliefs and social experiences, with other high achievers who do not aspire to science college degrees; (2) to understand why some high school students who excel in the hard sciences are unsure about pursuing a science degree in college; and (3) to examine whether gender differences in motivational beliefs and social experiences found in previous research on math (see Eccles 1984) exist for science among high achieving high school students. Survey and interview data showed that gender differences previously found in Eccles' research on math exist for science among a select group of high achieving high school students. Yet, these gender differences did not explain students' aspirations for science. Motivation, classroom perceptions, science engagement, as well as other science-related experiences at home and school, including parent and teacher influences, were also important factors associated with students' aspirations for science. Results and implications for this study are encouraging because they suggest that both parents and educators can help more high achievers become interested in science. Parents can expose their children, male and female alike, to science at home early on in their childhood and teachers can help students sustain and further develop an interest in science at school. In this manner, both parents and teachers can work together as a team to encourage more high achievers to aspire to science degrees in their future. Lastly, it is important to note that this study found Eccles' model of motivation and choice helpful in understanding not only gender differences in math and the hard sciences, but also aspiration differences that cut across gender among students

  18. Gender, school and academic year differences among Spanish university students at high-risk for developing an eating disorder: An epidemiologic study

    Directory of Open Access Journals (Sweden)

    Carrobles Jose A

    2008-03-01

    Full Text Available Abstract Background The aim of this study was to assess the magnitude of the university population at high-risk of developing an eating disorder and the prevalence of unhealthy eating attitudes and behaviours amongst groups at risk; gender, school or academic year differences were also explored. Methods A cross-sectional study based on self-report was used to screen university students at high-risk for an eating disorder. The sample size was of 2551 university students enrolled in 13 schools between the ages of 18 and 26 years. The instruments included: a social-demographic questionnaire, the Eating Disorders Inventory (EDI, the Body Shape Questionnaire (BSQ, the Symptom Check List 90-R (SCL-90-R, and the Self-Esteem Scale (RSE. The sample design is a non-proportional stratified sample by academic year and school. The prevalence rate was estimated controlling academic year and school. Logistic regression analysis was used to investigate adjusted associations between gender, school and academic year. Results Female students presented unhealthy weight-control behaviours as dieting, laxatives use or self-induced vomiting to lose weight than males. A total of 6% of the females had a BMI of 17.5 or less or 2.5% had amenorrhea for 3 or more months. In contrast, a higher proportion of males (11.6% reported binge eating behaviour. The prevalence rate of students at high-risk for an eating disorder was 14.9% (11.6–18 for males and 20.8% (18.7–22.8 for females, according to an overall cut-off point on the EDI questionnaire. Prevalence rates presented statistically significant differences by gender (p Conclusion The prevalence of eating disorder risk in university students is high and is associated with unhealthy weight-control practices, similar results have been found in previous studies using cut-off points in questionnaires. These results may be taken into account to encourage early detection and a greater awareness for seeking treatment in order

  19. Academic Practice

    DEFF Research Database (Denmark)

    Nielsen, Sandro; Heine, Carmen

    Vejledning i at undgå plagiering ved at følge de normer, der gælder for good academic practice. Dette indebærer at man angiver kilder korrekt, og når det er nødvendigt, og at man har en korrekt udformet fortegnelse over referencer. Vejledningen indeholder konkrete eksempler på korrekt kildeangive......Vejledning i at undgå plagiering ved at følge de normer, der gælder for good academic practice. Dette indebærer at man angiver kilder korrekt, og når det er nødvendigt, og at man har en korrekt udformet fortegnelse over referencer. Vejledningen indeholder konkrete eksempler på korrekt...

  20. Academic Nightmares: Predatory Publishing

    Science.gov (United States)

    Van Nuland, Sonya E.; Rogers, Kem A.

    2017-01-01

    Academic researchers who seek to publish their work are confronted daily with a barrage of e-mails from aggressive marketing campaigns that solicit them to publish their research with a specialized, often newly launched, journal. Known as predatory journals, they often promise high editorial and publishing standards, yet their exploitive business…

  1. Academic streaming in Europe

    DEFF Research Database (Denmark)

    Falaschi, Alessandro; Mønster, Dan; Doležal, Ivan

    2004-01-01

    The TF-NETCAST task force was active from March 2003 to March 2004, and during this time the mem- bers worked on various aspects of streaming media related to the ultimate goal of setting up common services and infrastructures to enable netcasting of high quality content to the academic community...

  2. Potential uses of high gradient magnetic filtration for high-temperature water purification in boiling water reactors

    International Nuclear Information System (INIS)

    Elliott, H.H.; Holloway, J.H.; Abbott, D.G.

    1979-01-01

    Studies of various high-temperature filter devices indicate a potentially positive impact for high gradient magnetic filtration on boiling water reactor radiation level reduction. Test results on in-plant water composition and impurity crystallography are presented for several typical boiling water reactors (BWRs) on plant streams where high-temperature filtration may be particularly beneficial. An experimental model on the removal of red iron oxide (hematite) from simulated reactor water with a high gradient magnetic filter is presented, as well as the scale-up parameters used to predict the filtration efficiency on various high temperature, in-plant streams. Numerical examples are given to illustrate the crud removal potential of high gradient magnetic filters installed at alternative stream locations under typical, steady-state, plant operating conditions

  3. Academic entitlement in pharmacy education.

    Science.gov (United States)

    Cain, Jeff; Romanelli, Frank; Smith, Kelly M

    2012-12-12

    The constructs of academic entitlement and student consumerism refer to students' attitudes toward education as a commodity and the underlying belief that as consumers, they should be catered to and given the opportunity to participate in the education process according to their preferences. Most discussions regarding these attitudes are anecdotal, but the pervasiveness of these accounts and the troubling effects that ensue warrant attention. Grade inflation, student incivility, altered classroom practices, and decreased faculty morale are all potential aftereffects of teaching students who hold academic entitlement beliefs. Numerous factors are posited as attributing to academic entitlement including personal issues, societal pressures, and broad academic practices. This paper discusses these factors and offers faculty members and administrators recommendations regarding practices that may curb or alleviate issues associated with academically entitled students.

  4. Peer relationships and academic achievement

    Directory of Open Access Journals (Sweden)

    Krnjajić Stevan B.

    2002-01-01

    Full Text Available After their childhood, when children begin to establish more intensive social contacts outside family, first of all, in school setting, their behavior i.e. their social, intellectual, moral and emotional development is more strongly affected by their peers. Consequently, the quality of peer relationships considerably affects the process of adaptation and academic achievement and their motivational and emotional attitude towards school respectively. Empirical findings showed that there is bi-directional influence between peer relationships and academic achievement. In other words, the quality of peer relationships affects academic achievement, and conversely, academic achievement affects the quality of peer relationships. For example, socially accepted children exhibiting prosocial, cooperative and responsible forms of behavior in school most frequently have high academic achievement. On the other hand, children rejected by their peers often have lower academic achievement and are a risk group tending to delinquency, absenteeism and drop out of school. Those behavioral and interpersonal forms of competence are frequently more reliable predictors of academic achievement than intellectual abilities are. Considering the fact that various patterns of peer interaction differently exert influence on students' academic behavior, the paper analyzed effects of (a social competence, (b social acceptance/rejection, (c child's friendships and (d prosocial behavior on academic achievement.

  5. High-Ability Grouping: Benefits for Gifted Students' Achievement Development Without Costs in Academic Self-Concept.

    Science.gov (United States)

    Preckel, Franzis; Schmidt, Isabelle; Stumpf, Eva; Motschenbacher, Monika; Vogl, Katharina; Scherrer, Vsevolod; Schneider, Wolfgang

    2017-11-23

    Effects of full-time ability grouping on students' academic self-concept (ASC) and mathematics achievement were investigated in the first 3 years of secondary school (four waves of measurement; students' average age at first wave: 10.5 years). Students were primarily from middle and upper class families living in southern Germany. The study sample comprised 148 (60% male) students from 14 gifted classes and 148 (57% male) students from 25 regular classes (matched by propensity score matching). Data analyses involved multilevel and latent growth curve analyses. Findings revealed no evidence for contrast effects of class-average achievement or assimilation effects of class type on students' ASC. ASC remained stable over time. Students in gifted classes showed higher achievement gains than students in regular classes. © 2017 The Authors. Child Development © 2017 Society for Research in Child Development, Inc.

  6. A high-resolution assessment of wind and wave energy potentials in the Red Sea

    KAUST Repository

    Langodan, Sabique; Viswanadhapalli, Yesubabu; Dasari, Hari Prasad; Knio, Omar; Hoteit, Ibrahim

    2016-01-01

    This study presents an assessment of the potential for harvesting wind and wave energy from the Red Sea based on an 18-year high-resolution regional atmospheric reanalysis recently generated using the Advanced Weather Research Forecasting model

  7. Retention of high-potential employees in a development finance company

    Directory of Open Access Journals (Sweden)

    Lishani Letchmiah

    2017-09-01

    Full Text Available Orientation: The loss of high-potential employees was a concern to leaders at a South African development finance company. The research question that guided the study was: How can high-potential employees be retained in the company? Research purpose: The objective of the study was to identify factors that positively impact the retention of high-potential employees in a development finance company. Motivation for the study: The organisation that comprised the unit of study had prioritised employee development to retain high-potential employees, thereby aiming to build a strong talent pipeline and a sustainable knowledge base. A prevalent concern was that there were no formal retention programmes for high-potential employees. Accordingly, organisational leaders could benefit from understanding those retention factors that may serve to retain such employees. Research design, approach and method: A qualitative methodology promoted a deeper understanding of a social problem through a case study. Eleven purposefully chosen highpotential employees provided insights into factors they considered to be important in their retention. A content analysis of the data resulted in clusters of themes that addressed the research objective. Main findings: The following factors appeared to influence the retention of high-potential employees: leadership and organisational culture, organisational purpose, developmental opportunities, meaningful work and collegiality. Practical and managerial implications: Leaders in the company should consider factors that could influence the retention of high-potential employees. Such factors should be built into formal retention strategies based on the intrinsic needs of employees; the strengths that the organisational culture provides could be leveraged in this regard. Contribution: The practical value of the study was the highlighting of the factors that can be leveraged to retain high-potential employees in a development finance

  8. English Language Teaching and the Promotion of Academic Ethics

    Science.gov (United States)

    Ntombela, Berrington

    2011-01-01

    Institutions of higher learning carry a burden of inculcating a culture of academic ethical behaviour among students as part of their responsibility to produce citizens of high calibre. In fact, this burden is more expedient and pronounced because of aberrant behaviours such as cheating that can potentially affect institutions' credibility. This…

  9. Academic and Nonacademic Validating Agents on Latinas' Mathematics and Science Self Concept: A Quantitative Study Utilizing the High School Longitudinal Study of 2009

    Science.gov (United States)

    Garza, Jennifer M.

    2017-01-01

    The purpose of this study is to inform and further the discussion of academic (i.e., teachers and school counselors) and non-academic (i.e., parents, family, friends, etc.) validating agents on Latina students' mathematics and science self-concepts. This study found a relationship between Latina students' interactions with academic and…

  10. Why Do High School Students Lack Motivation in the Classroom? Toward an Understanding of Academic Amotivation and the Role of Social Support

    Science.gov (United States)

    Legault, Lisa; Green-Demers, Isabelle; Pelletier, Luc

    2006-01-01

    The present series of studies sought to develop and conceptually validate a taxonomy of reasons that give rise to academic amotivation and to investigate its social antecedents and academic consequences. In Study 1 (N = 351), an exploratory factor analysis offered preliminary support for an academic amotivation taxonomy comprising four dimensions:…

  11. ACADEMIC TRAINING

    CERN Multimedia

    Françoise Benz

    2002-01-01

    6, 7 May LECTURE SERIES from 11.00 to 12.00 hrs - Auditorium, bldg. 500 Decoding the Human Genome, Scientific basis and ethic and social aspects by S.E. Antonarakis and A. Mauron / Univ. of Geneva Decoding the Human genome is a very up-to-date topic, raising several questions besides purely scientific, in view of the two competing teams (public and private), the ethics of using the results, and the fact that the project went apparently faster and easier than expected. The lecture series will address the following chapters: Scientific basis and challenges, Ethical and social aspects of genomics. Academic Training Françoise Benz Tel. 73127

  12. Potential Fit to the Department Outweighs Professional Criteria in the Hiring Process in Academic Libraries. A Review of: Wang, Z. & Guarria, C. (2010. Unlocking the mystery: What academic library search committees look for in filling faculty positions. Technical Services Quarterly, 27, 66–86.

    Directory of Open Access Journals (Sweden)

    Yvonne Hultman Özek

    2010-12-01

    respondents, 65% employed evaluation forms after an interview, 38% reported that they would go beyond the applicant’s given references, and 61% felt that the applicant’s potential to fit into the department was important. The “potential fit” criteria scored the highest of these criteria: demonstrated performance of job requirements; cover letter; and knowledge of trends in latest developments in library science (p. 74. Of 211 respondents, 47.39% reported that the average length of the search process was 4 to 6 months. Most respondents perceived the search process as slow.Conclusion – In general, the survey offered an overview of current practices of academic library search committees, which can aid those on the hiring side as well as those who are seeking a job. Based on the results, the authors state that, in addition to all of the job requirements, it is vital to consider the potential fit of the applicant within the department. The hiring of candidates with less experience emphasizes the significance of fitting into the department and can be weighed against selection of individuals with more experience. This conclusion is encouraging for those who have recently graduated from library school.

  13. Academic Vocational Training

    DEFF Research Database (Denmark)

    Willert, Søren; Keller, Hanne Dauer; Stegeager, Nikolaj

    2010-01-01

    Danish society puts a high value on education which is traditionally seen as a crucial vehicle for development in all spheres of social and economic life. Large sums are spent on work-related adult learning, an important example being academically based masters programs. Yet, the actual effects o......, with examples, a framework for designing educational programs which can help make academic teaching relevant to production-oriented life in organizations. The paper may be read as a statement from which criteria for evaluating the said masters programs can be generated.......Danish society puts a high value on education which is traditionally seen as a crucial vehicle for development in all spheres of social and economic life. Large sums are spent on work-related adult learning, an important example being academically based masters programs. Yet, the actual effects...... of such educational investment in terms of improved workplace efficiency remain obscure both with respect to the organization and the individual. Academically acquired knowledge is generally admitted not to affect work-related outcomes to any significant extent. The three authors of this paper are all involved...

  14. Leptin status in adolescence is associated with academic performance in high school: a cross-sectional study in a Chilean birth cohort.

    Science.gov (United States)

    Correa-Burrows, Paulina; Blanco, Estela; Reyes, Marcela; Castillo, Marcela; Peirano, Patricio; Algarín, Cecilia; Lozoff, Betsy; Gahagan, Sheila; Burrows, Raquel

    2016-10-18

    Leptin is a pleiotropic hormone associated with learning and memory via brain receptors. However, elevated plasma leptin levels may impair cognitive and memory functions. Since individual differences in memory performance affect students' ability to learn, we aimed to study the relation between leptin status in adolescence and school performance. We studied 568 adolescents aged 16-17 years from Santiago. A cross-sectional analysis was carried out on a birth cohort conducted in Santiago (Chile). We measured serum leptin concentration using an enzyme-linked immunosorbent assay. Cut-offs from the Healthy Lifestyle in Europe by Nutrition in Adolescence (HELENA) Study for 16-year-olds were used to define abnormally high leptin levels (hyperleptinaemia). Academic performance was measured using high-school grades and grade point average (GPA). Data were collected in 2009-2012; data analysis was performed in 2014. 15% of participants had hyperleptinaemia. They had significantly lower school grades and GPA compared with participants with normal leptin levels (eg, GPA mean difference=33.8 points). Leptin levels were negative and significantly correlated with school grades in 9th, 10th and 12th. Similarly, it was negatively correlated with high-school GPA. After controlling for health, sociodemographic and education confounders, the chances of having a performance ≥75th centile in students having hyperleptinaemia were 32% (95% CI 0.19% to 0.89%) that of students having normal serum leptin concentration. In high school students, abnormally high levels of leptin were associated with poorer academic performance. These findings support the idea of a relationship between leptin and cognition. Further research is needed on the cognitive effects of leptin in younger populations. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.

  15. Highly deformable and highly fluid vesicles as potential drug delivery systems: theoretical and practical considerations

    Directory of Open Access Journals (Sweden)

    Romero EL

    2013-08-01

    Full Text Available Eder Lilia Romero, Maria Jose Morilla Nanomedicine Research Program, Department of Science and Technology, National University of Quilmes, Bernal, Buenos Aires, Argentina Abstract: Vesicles that are specifically designed to overcome the stratum corneum barrier in intact skin provide an efficient transdermal (systemic or local drug delivery system. They can be classified into two main groups according to the mechanisms underlying their skin interaction. The first group comprises those possessing highly deformable bilayers, achieved by incorporating edge activators to the bilayers or by mixing with certain hydrophilic solutes. The vesicles of this group act as drug carriers that penetrate across hydrophilic pathways of the intact skin. The second group comprises those possessing highly fluid bilayers, owing to the presence of permeation enhancers. The vesicles of this group can act as carriers of drugs that permeate the skin after the barrier of the stratum corneum is altered because of synergistic action with the permeation enhancers contained in the vesicle structure. We have included a detailed overview of the different mechanisms of skin interaction and discussed the most promising preclinical applications of the last five years of Transfersomes® (IDEA AG, Munich, Germany, ethosomes, and invasomes as carriers of antitumoral and anti-inflammatory drugs applied by the topical route. Keywords: Transfersomes, ethosomes, antitumoral, anti-inflammatory, topical delivery

  16. High Self-efficacy and High Use of Electronic Information may Predict Improved Academic Performance. A review of: Tella, Adeyinka, Adedeji Tella, C. O. Ayeni, and R. O. Omoba. “Self-efficacy and Use of Electronic Information as Predictors of Academic Performance.” Electronic Journal of Academic and Special Librarianship 8.2 (2007. 24 Apr. 2008

    Directory of Open Access Journals (Sweden)

    Stephanie J. Schulte

    2008-06-01

    Full Text Available Objective – To determine if self-efficacy and use of electronic information jointly predicted academic performance and to determine what information sources students used most often. Design – Descriptive surveys (scales for each of the three variables.Setting – University of Ibadan, Nigeria, a metropolitan, government-supported university with approximately 18,000 students.Subjects – Seven hundred undergraduate and graduate students randomly chosen from 7 departments of the faculty (i.e., college of education (100 students from each department.Methods – Students completed the Morgan-Jinks Self-Efficacy Scale and the Use of Electronic Information Scale. Academic performance was measured using a general aptitude test that covered general education, English language, and mathematics. The Morgan-Jinks scale consisted of 30 items, and the academic performance test consisted of 40 items. No instrument length was provided for the Use of Electronic Information Scale, and no details on the actual content of the general aptitude test or the Use of Electronic Information Scale were provided. These surveys were completed atthe university under conditions similar to that of a typical exam (i.e., no talking. All 700 subjects completed the surveys, and there was no evidence of participants providing informed consent or that they were given an opportunity to withdraw from the study. Data was analyzed using multiple regression analysis, a suitable analysis for this type of data.Main Results – Self-efficacy and use of electronic information together contributed to 9% (reported as 0.9% in the article of the variance in academic performance, and each variable statistically significantly contributed to predicting academic performance (pConclusion – The original authors conclude that self-efficacy and use of electronic information “predict and influence academic performance” (Discussion ¶ 6. Since use of electronic information is related to greater

  17. Moving global health forward in academic institutions

    Directory of Open Access Journals (Sweden)

    Didier Wernli

    2016-06-01

    Full Text Available Global health has attracted growing attention from academic institutions. Its emergence corresponds to the increasing interdependence that characterizes our time and provides a new worldview to address health challenges globally. There is still a large potential to better delineate the limits of the field, drawing on a wide perspective across sciences and geographical areas. As an implementation and integration science, academic global health aims primarily to respond to societal needs through research, education, and practice. From five academic institutions closely engaged with international Geneva, we propose here a definition of global health based on six core principles: 1 cross–border/multilevel approach, 2 inter–/trans–disciplinarity, 3 systems thinking, 4 innovation, 5 sustainability, and 6 human rights/equity. This definition aims to reduce the century–old divide between medicine and public health while extending our perspective to other highly relevant fields. Overall, this article provides an intellectual framework to improve health for all in our contemporary world with implications for academic institutions and science policy.

  18. Explaining Asian Americans’ academic advantage over whites

    Science.gov (United States)

    Hsin, Amy; Xie, Yu

    2014-01-01

    The superior academic achievement of Asian Americans is a well-documented phenomenon that lacks a widely accepted explanation. Asian Americans’ advantage in this respect has been attributed to three groups of factors: (i) socio-demographic characteristics, (ii) cognitive ability, and (iii) academic effort as measured by characteristics such as attentiveness and work ethic. We combine data from two nationally representative cohort longitudinal surveys to compare Asian-American and white students in their educational trajectories from kindergarten through high school. We find that the Asian-American educational advantage is attributable mainly to Asian students exerting greater academic effort and not to advantages in tested cognitive abilities or socio-demographics. We test explanations for the Asian–white gap in academic effort and find that the gap can be further attributed to (i) cultural differences in beliefs regarding the connection between effort and achievement and (ii) immigration status. Finally, we highlight the potential psychological and social costs associated with Asian-American achievement success. PMID:24799702

  19. Explaining Asian Americans' academic advantage over whites.

    Science.gov (United States)

    Hsin, Amy; Xie, Yu

    2014-06-10

    The superior academic achievement of Asian Americans is a well-documented phenomenon that lacks a widely accepted explanation. Asian Americans' advantage in this respect has been attributed to three groups of factors: (i) socio-demographic characteristics, (ii) cognitive ability, and (iii) academic effort as measured by characteristics such as attentiveness and work ethic. We combine data from two nationally representative cohort longitudinal surveys to compare Asian-American and white students in their educational trajectories from kindergarten through high school. We find that the Asian-American educational advantage is attributable mainly to Asian students exerting greater academic effort and not to advantages in tested cognitive abilities or socio-demographics. We test explanations for the Asian-white gap in academic effort and find that the gap can be further attributed to (i) cultural differences in beliefs regarding the connection between effort and achievement and (ii) immigration status. Finally, we highlight the potential psychological and social costs associated with Asian-American achievement success.

  20. 3rd symposium on high-efficiency boiler technology: potential, performance, shortcomings of natural gas fuelled high-efficiency boilers

    International Nuclear Information System (INIS)

    1993-01-01

    The brochure contains abstracts of the papers presented at the symposium. The potential, performance and marketing problems of natural gas high-efficiency boiler systems are outlined, and new ideas are presented for gas utilities, producers of appliances, fitters, and chimneysweeps. 13 papers are available as separate regards in this database. (HW) [de

  1. Progress in long sustainment and high density experiments with potential confinement on GAMMA 10

    International Nuclear Information System (INIS)

    Yatsu, K.; Cho, T.; Hirata, M.

    2001-01-01

    The improvement of potential confinement reported in the last IAEA meeting was attained by axisymmetrization of heating pattern of electron cyclotron resonance heating (ECRH). It was experimentally shown that the axisymmetrization of ECRH really produced axisymmetric potential profile. GAMMA 10 experiments have advanced in longer sustainment and high density operation of potential confinement. Experiments for long sustainment of potential confinement were carried out in order to study problems of steady state operation of a tandem mirror reactor. A confining potential was sustained for 150 ms by sequentially injecting two (ECRH) powers in the plug region. It was difficult before to increase the central cell density higher than about 2.5x10 12 cm -3 with and/or without potential confinement due to some density limiting mechanism. In order to overcome this problem, a new higher frequency ion cyclotron range of frequency (ICRF) system (RF3: 36-76 MHz) has been installed. A higher density plasma has been produced with RF3. In addition to RF3, neutral beam injection (NBI) in the anchor cell became effective by reducing neutral gas from beam injectors. Potential confinement experiments have advanced to higher central cell densities up to 4x10 12 cm -3 with RF3 and NBI. A 20% density increase due to the potential confinement was obtained in the high density experiments. (author)

  2. Potential formation and confinement in high density plasma on the GAMMA 10 tandem mirror

    International Nuclear Information System (INIS)

    Yatsu, K.

    2002-01-01

    After the attainment of doubling of the density due to the potential confinement, GAMMA 10 experiments have been directed to realization of a high density plasma and also to study dependence of the confining potential and confinement time on the plasma density. These problems are important to understand the physics of potential formation in tandem mirrors and also for the development of a tandem mirror reactor. We reported high density plasma production by using an ion cyclotron range of frequency heating at a high harmonic frequency in the last IAEA Conference. However, the diamagnetic signal of the high density plasma decreased when electron cyclotron resonance heating (ECRH) was applied due to some instabilities. Recently, the high density plasma production was much improved by adjusting the spacing of the conducting plates installed in the anchor transition regions, which enabled us to produce a high density plasma without degradation of the diamagnetic signal with ECRH and also to study the density dependence. In this paper we report production of a high density plasma and dependence of the confining potential and the confinement time on the density. (author)

  3. The Prevalence and Covariates of Potential Doping Behavior in Kickboxing; Analysis Among High-Level Athletes

    Directory of Open Access Journals (Sweden)

    Sekulic Damir

    2017-10-01

    Full Text Available The official reports on doping behavior in kickboxing are alarming, but there have been no empirical studies that examined this problem directly. The aim of this study was to investigate the prevalence, gender differences and covariates of potential-doping-behavior, in kickboxing athletes. A total of 130 high-level kickboxing athletes (92 males, 21.37 ± 4.83 years of age, 8.39 ± 5.73 years of training experience; 38 women, 20.31 ± 2.94 years of age; 9.84 ± 4.74 years of training experience completed questionnaires to study covariates and potential-doping behavior. The covariates were: sport factors (i.e. experience, success, doping-related factors (i.e. opinion about penalties for doping users, number of doping testing, potential-doping-behavior, etc., sociodemographic variables, task- and ego-motivation, knowledge on sports nutrition, and knowledge on doping. Gender-based differences were established by independent t-tests, and the Mann-Whitney test. Multinomial logistic regression analyses were performed to define the relationships between covariates and a tendency toward potential-doping behavior (positive tendency – neutral – negative tendency. The potential-doping behavior was higher in those athletes who perceived kickboxing as doping contaminated sport. The more experienced kickboxers were associated with positive intention toward potential-doping behavior. Positive intention toward potential-doping behavior was lower in those who had better knowledge on sports nutrition. The task- and ego-motivation were not associated to potential-doping behavior. Because of the high potential-doping-behavior (less than 50% of athletes showed a negative tendency toward doping, and similar prevalence of potential-doping behavior between genders, this study highlights the necessity of a systematic anti-doping campaign in kickboxing. Future studies should investigate motivational variables as being potentially related to doping behavior in younger

  4. The Prevalence and Covariates of Potential Doping Behavior in Kickboxing; Analysis among High-Level Athletes

    Science.gov (United States)

    Sekulic, Damir; Zenic, Natasa; Versic, Sime; Maric, Dora; Gabrilo, Goran; Jelicic, Mario

    2017-01-01

    Abstract The official reports on doping behavior in kickboxing are alarming, but there have been no empirical studies that examined this problem directly. The aim of this study was to investigate the prevalence, gender differences and covariates of potential-doping-behavior, in kickboxing athletes. A total of 130 high-level kickboxing athletes (92 males, 21.37 ± 4.83 years of age, 8.39 ± 5.73 years of training experience; 38 women, 20.31 ± 2.94 years of age; 9.84 ± 4.74 years of training experience) completed questionnaires to study covariates and potential-doping behavior. The covariates were: sport factors (i.e. experience, success), doping-related factors (i.e. opinion about penalties for doping users, number of doping testing, potential-doping-behavior, etc.), sociodemographic variables, task- and ego-motivation, knowledge on sports nutrition, and knowledge on doping. Gender-based differences were established by independent t-tests, and the Mann-Whitney test. Multinomial logistic regression analyses were performed to define the relationships between covariates and a tendency toward potential-doping behavior (positive tendency – neutral – negative tendency). The potential-doping behavior was higher in those athletes who perceived kickboxing as doping contaminated sport. The more experienced kickboxers were associated with positive intention toward potential-doping behavior. Positive intention toward potential-doping behavior was lower in those who had better knowledge on sports nutrition. The task- and ego-motivation were not associated to potential-doping behavior. Because of the high potential-doping-behavior (less than 50% of athletes showed a negative tendency toward doping), and similar prevalence of potential-doping behavior between genders, this study highlights the necessity of a systematic anti-doping campaign in kickboxing. Future studies should investigate motivational variables as being potentially related to doping behavior in younger

  5. Is past academic productivity predictive of radiology resident academic productivity?

    Science.gov (United States)

    Patterson, Stephanie K; Fitzgerald, James T; Boyse, Tedric D; Cohan, Richard H

    2002-02-01

    The authors performed this study to determine whether academic productivity in college and medical school is predictive of the number of publications produced during radiology residency. The authors reviewed the records of 73 radiology residents who completed their residency from 1990 to 2000. Academic productivity during college, medical school, and radiology residency, other postgraduate degrees, and past careers other than radiology were tabulated. The personal essay attached to the residency application was reviewed for any stated academic interest. Residents were classified as being either previously productive or previously unproductive. Publication rates during residency and immediately after residency were compared for the two groups. For the productive residents, a correlation analysis was used to examine the relationship between past frequency of publication and type of previous activity. Least-squares regression analysis was used to investigate the relationship between preresidency academic productivity, advanced degrees, stated interest in academics, and other careers and radiology residency publications. There was no statistically significant difference in the number of articles published by those residents who were active and those who were not active before residency (P = .21). Only authorship of papers as an undergraduate was weakly predictive of residency publication. These selected measures of academic productivity as an undergraduate and during medical school are not helpful for predicting publication during residency. There was no difference in publication potential between those residents who were academically productive in the past and those who were not.

  6. HIGH YIELD GENETICALLY MODIFIED WHEAT IN GERMANY: SOCIO ECONOMIC ASSESSMENT OF ITS POTENTIAL

    OpenAIRE

    Wree, Philipp; Sauer, Johannes

    2015-01-01

    High Yield Genetically Modified Wheat (HOSUT) HOSUT lines are an innovation in wheat breeding based on biotechnology with an incremental yield potential of ca. 28% compared to conventional wheat varieties. We apply the real option concept of Maximum Incremental Social Tolerable Irreversible Costs (MISTICs) to do an ex-ante assessment of the socioeconomic potential of HOSUT lines for Germany. We analyze the cost and benefits to farmer and society within two scenarios. Our results of our scenar...

  7. Screening for psychological distress among High School Graduates Accepted for Enrollment at Alexandria Faculty of Medicine: Academic year 2016/2017

    Directory of Open Access Journals (Sweden)

    Iman Hassan Diab

    2018-06-01

    Full Text Available Background: Mental and psychological health of adolescents in general and prospective medical students in particular is a priority area to investigate as it affects wellbeing of the future doctors. Objectives: The current research was conducted to screen first year medical students accepted for enrollment at Alexandria Faculty of Medicine to identify those with a high probability of having psychological distress before the start of academic courses as well as explore the sources of stress among them.Methods.A cross sectional survey of 779 high school graduates accepted for admission to Alexandria Faculty of medicine was conducted. Participants were approached on the days of obligatory pre-enrollment medical examination. The translated Arabic version of DASS 21 questionnaire was used to screen students for three negative emotional symptoms namely depression, anxiety and stress. Inquiry about age, sex, residency and type of high school was added. Results: More than a tenth of studied medical students (12.6% suffered from severe or profound stress and 29.1% of them had mild to moderate stress. Moreover, one fifth (20% of studied students were severely anxious and less than one third (29.3% had mild to moderate anxiety. Severe and profound depression was diagnosed among 14.3% of students whereas, 18.7% them were moderately depressed. No association was found between any of studied negative emotional symptoms and the students' educational background or their residency. Conclusion: Nearly half of the prospective medical students might have some sort of psychological distress before starting their study in the Faculty of Medicine. They should be investigated to verify diagnosis and start intervention to minimize its adverse effects on academic performance and advancement at the faculty. Stress management courses should be considered for all medical students. Keywords: Psychological distress, Prospective medical students, Adolescents' psychological

  8. ACADEMIC TRAINING

    CERN Multimedia

    Françoise Benz

    2002-01-01

    25, 26, 27, 28 February and 1st March from 11.00 to 12.00 hrs - Auditorium, bldg. 500 LECTURE SERIES Neutrino masses and oscillations by A. de Rujula / CERN-TH This course will not cover its subject in the customary way. The emphasis will be on the simple theoretical concepts (helicity, handedness, chirality, Majorana masses) which are obscure in most of the literature, and on the quantum mechanics of oscillations, that ALL books get wrong. Which, hopefully, will not deter me from discussing some of the most interesting results from the labs and from the cosmos. Academic Training Françoise Benz Secretariat Tel. 73127 francoise.benz@cern.ch

  9. An Evaluation of the Cutting Potential of Different Types of High Power Lasers

    DEFF Research Database (Denmark)

    Olsen, Flemming Ove

    2006-01-01

    Laser cutting is a widespread industrial process. The boundaries for the performance of the lasers in terms of cutting capabilities is steadily moving towards higher cutting rates and thicker section cutting. In this paper the potential of different high power laser sources in cutting is evaluated...... based upon the historical development, the available cutting mechanisms understanding and the critical parameters involved in high power laser cutting. From the theoretical point of view, the new laser sources, the Disc-laser and the Fibre laser possess a potential of changing dramatically the limits...... for cutting performance. These theoretical considerations are evaluated against available cutting data....

  10. Nutritional quality of diet and academic performance in Chilean students

    Science.gov (United States)

    Correa-Burrows, Paulina; Blanco, Estela; Reyes, Marcela; Gahagan, Sheila

    2016-01-01

    Abstract Objective To explore associations between the nutritional quality of diet at age 16 years and academic performance in students from Santiago, Chile. Methods We assessed the nutritional quality of diet, using a validated food frequency questionnaire, in 395 students aged 16.8 ± 0.5 years. Depending on the amount of saturated fat, fibre, sugar and salt in the foods, diet was categorized as unhealthy, fair or healthy. Academic performance was assessed using high school grade-point average (GPA) and tests for college admission in language and mathematics. Academic results on or above the 75th percentile in our sample were considered good academic performance. We tested associations between nutritional quality of diet and good academic performance using logistic regression models. We considered sociodemographic, educational and body-mass index (BMI) factors as potential confounders. Findings After controlling for potential confounding factors, an unhealthy diet at age 16 years was associated with reduced academic performance. Compared to participants with healthy diets, those with unhealthy diets were significantly less likely to perform well based on language tests (odds ratio, OR: 0.42; 95% confidence interval, CI: 0.18–0.98) mathematics tests (OR: 0.35; 95% CI: 0.15–0.82) or GPA (OR: 0.22; 95% CI: 0.09–0.56). Conclusion In our sample, excessive consumption of energy-dense, low-fibre, high-fat foods at age 16 years was associated with reduced academic performance. PMID:26966329

  11. An adaptive approach to family-centered intervention in schools: linking intervention engagement to academic outcomes in middle and high school.

    Science.gov (United States)

    Stormshak, Elizabeth A; Connell, Arin; Dishion, Thomas J

    2009-09-01

    This study examined the impact of an adaptive approach to family intervention in public schools on academic outcomes from age 11 to 17. Students were randomly assigned to the three-session Family Check-Up (FCU), which is designed to motivate change in parenting practices by using an assessment-driven approach and strengths-based feedback. All services were voluntary, and approximately 25% of the families engaged in the FCU. Compared with matched controls, adolescents whose parents received the FCU maintained a satisfactory GPA into high school, and intervention engagement was associated with improved attendance. The highest-risk families were the most likely to engage in the family-centered intervention, suggesting the efficacy of integrating supportive services to families in the context of other schoolwide approaches to promote the success and achievement of vulnerable students.

  12. Controlling the occurrence of power overshoot by adapting microbial fuel cells to high anode potentials

    KAUST Repository

    Zhu, Xiuping

    2013-04-01

    Power density curves for microbial fuel cells (MFCs) often show power overshoot, resulting in inaccurate estimation of MFC performance at high current densities. The reasons for power overshoot are not well understood, but biofilm acclimation and development are known factors. In order to better explore the reasons for power overshoot, exoelectrogenic biofilms were developed at four different anode potentials (-0.46 V, -0.24 V, 0 V, and 0.50 V vs. Ag/AgCl), and then the properties of the biofilms were examined using polarization tests and cyclic voltammetry (CV). The maximum power density of the MFCs was 1200±100 mW/m2. Power overshoot was observed in MFCs incubated at -0.46 V, but not those acclimated atmore positive potentials, indicating that bacterial activitywas significantly influenced by the anode acclimation potential. CV results further indicated that power overshoot of MFCs incubated at the lowest anode potential was associatedwith a decreasing electroactivity of the anodic biofilm in the high potential region,which resulted from a lack of sufficient electron transfer components to shuttle electrons at rates needed for these more positive potentials. © 2012 Elsevier B.V.

  13. Case Studies of Leading Edge Small Urban High Schools. Core Academic Strategic Designs: 3. University Park Campus School

    Science.gov (United States)

    Shields, Regis Anne; Ireland, Nicole; City, Elizabeth; Derderian, Julie; Miles, Karen Hawley

    2008-01-01

    This report is one of nine detailed case studies of small urban high schools that served as the foundation for the Education Resource Strategies (ERS) report "Strategic Designs: Lessons from Leading Edge Small Urban High Schools." These nine schools were dubbed "Leading Edge Schools" because they stand apart from other high…

  14. Case Studies of Leading Edge Small Urban High Schools. Core Academic Strategic Designs: 1. Academy of the Pacific Rim

    Science.gov (United States)

    Shields, Regis Anne; Ireland, Nicole; City, Elizabeth; Derderian, Julie; Miles, Karen Hawley

    2008-01-01

    This report is one of nine detailed case studies of small urban high schools that served as the foundation for the Education Resource Strategies (ERS) report "Strategic Designs: Lessons from Leading Edge Small Urban High Schools." These nine schools were dubbed "Leading Edge Schools" because they stand apart from other high…

  15. High Protein- and High Lipid-Producing Microalgae from Northern Australia as Potential Feedstock for Animal Feed and Biodiesel

    OpenAIRE

    Duong, Van Thang; Ahmed, Faruq; Thomas-Hall, Skye R.; Quigley, Simon; Nowak, Ekaterina; Schenk, Peer M.

    2015-01-01

    Microalgal biomass can be used for biodiesel, feed, and food production. Collection and identification of local microalgal strains in the Northern Territory, Australia was conducted to identify strains with high protein and lipid contents as potential feedstock for animal feed and biodiesel production, respectively. A total of 36 strains were isolated from 13 samples collected from a variety of freshwater locations, such as dams, ponds, and streams and subsequently classified by 18S rDNA sequ...

  16. High protein- and high lipid-producing microalgae from Outback Australia as potential feedstock for animal feed and biodiesel

    OpenAIRE

    Van Thang eDuong; Faruq eAhmed; Skye R Thomas-Hall; Katia eNowak; Peer M Schenk

    2015-01-01

    Microalgal biomass can be used for biodiesel, feed and food production. Collection and identification of local microalgal strains in the Northern Territory – Australia was conducted to identify strains with high protein and lipid contents as potential feedstock for animal feed and biodiesel production, respectively. A total of 36 strains were isolated from 13 samples collected from a variety of freshwater locations, such as dams, ponds and streams and subsequently classified by 18S rDNA seque...

  17. Nucleus-Nucleus Scattering in the High-Energy Approximation and the Optical Folding Potential

    CERN Document Server

    Lukyanov, V K; Lukyanov, K V

    2004-01-01

    For the nucleus-nucleus scattering, the complex potential is obtained which corresponds to the eikonal phase of an optical limit of the Glauber-Sitenko high-energy approximation. The potential does not include free parameters, its real and imaginary parts depend on energy and are determined by the reported data on the nuclear density distributions and nucleon-nucleon scattering amplitude. Alternatively, for the real part, the folding potential can be utilized which includes the effective NN-forces and the exchange term, as well. As a result, the microscopic optical potential is constructed where contributions of the calculated real and imaginary parts are formed by fitting the two respective factors. An efficient of the approach is confirmed by agreements of calculations with the experimental data on elastic scattering cross-sections.

  18. Study of high-pressure adsorption from supercritical fluids by the potential theory

    DEFF Research Database (Denmark)

    Monsalvo, Matias Alfonso; Shapiro, Alexander

    2009-01-01

    The multicomponent potential theory of adsorption (MPTA), which has been previously used to study low-pressure adsorption of subcritical fluids, is extended to adsorption equilibria from supercritical fluids up to high pressures. The MPTA describes an adsorbed phase as an inhomogeneous fluid...... the adsorbed and the gas phases. We have also evaluated the performance of the classical Soave-Redlich-Kwong (SRK) EoS. The fluid-solid interactions are described by simple Dubinin-Radushkevich-Astakhov (DRA) potentials. In addition, we test the performance of the 10-4-3 Steele potential. It is shown...... that application of sPC-SAFT slightly improves the performance of the MPTA and that in spite of its simplicity, the DRA model can be considered as an accurate potential, especially, for mixture adsorption. We show that, for the sets of experimental data considered in this work, the MPTA is capable of predicting...

  19. Microbial communities in low permeability, high pH uranium mine tailings: characterization and potential effects.

    Science.gov (United States)

    Bondici, V F; Lawrence, J R; Khan, N H; Hill, J E; Yergeau, E; Wolfaardt, G M; Warner, J; Korber, D R

    2013-06-01

    To describe the diversity and metabolic potential of microbial communities in uranium mine tailings characterized by high pH, high metal concentration and low permeability. To assess microbial diversity and their potential to influence the geochemistry of uranium mine tailings using aerobic and anaerobic culture-based methods, in conjunction with next generation sequencing and clone library sequencing targeting two universal bacterial markers (the 16S rRNA and cpn60 genes). Growth assays revealed that 69% of the 59 distinct culturable isolates evaluated were multiple-metal resistant, with 15% exhibiting dual-metal hypertolerance. There was a moderately positive correlation coefficient (R = 0·43, P tailings depth was shown to influence bacterial community composition, with the difference in the microbial diversity of the upper (0-20 m) and middle (20-40 m) tailings zones being highly significant (P tailings zone being significant (P tailings environment, along with their demonstrated capacity for transforming metal elements, suggests that these organisms have the potential to influence the long-term geochemistry of the tailings. This study is the first investigation of the diversity and functional potential of micro-organisms present in low permeability, high pH uranium mine tailings. © 2013 The Society for Applied Microbiology.

  20. High Biofilm Conductivity Maintained Despite Anode Potential Changes in a Geobacter-Enriched Biofilm

    Science.gov (United States)

    This study systematically assessed intracellular electron transfer (IET) and extracellular electron transfer (EET) kinetics with respect to anode potential (Eanode) in a mixed-culture biofilm anode enriched with Geobacter spp. High biofilm conductivity (0.96–1.24 mScm^-1) was mai...

  1. High-resolution assessment of global technical and economic hydropower potential

    NARCIS (Netherlands)

    Gernaat, David E.H.J.; Bogaart, Patrick W.; Vuuren, van Detlef P.; Biemans, Hester; Niessink, Robin

    2017-01-01

    Hydropower is the most important renewable energy source to date, providing over 72% of all renewable electricity globally. Yet, only limited information is available on the global potential supply of hydropower and the associated costs. Here we provide a high-resolution assessment of the technical

  2. Expression and Characterisation of Recombinant Rhodocyclus tenuis High Potential Iron-Sulphur Protein

    DEFF Research Database (Denmark)

    Caspersen, Michael Bjerg; Bennet, K.; Christensen, Hans Erik Mølager

    2000-01-01

    The high potential iron-sulfur protein (HiPIP) from Rhodocyclus tenuis strain 2761 has been overproduced in Escherichia coli from its structural gene, purified to apparent homogeneity, and then characterized by an array of methods. UV-visible spectra of the reduced and oxidized recombinant protein...

  3. Chernobyl Nuclear Catastrophe and the High Risk Potential for Mental Retardation.

    Science.gov (United States)

    Holowinsky, Ivan Z.

    1993-01-01

    This report considers potential effects of the 1986 nuclear explosion at the Chernobyl (Ukraine) nuclear reactor. Approximately 17 million people, of whom 2.5 million were below the age of 5, are thought to have suffered some radioactive contamination. Many of these children are at high risk for mental retardation and learning disorders.…

  4. Action potential generation requires a high sodium channel density in the axon initial segment

    NARCIS (Netherlands)

    Kole, Maarten H. P.; Ilschner, Susanne U.; Kampa, Björn M.; Williams, Stephen R.; Ruben, Peter C.; Stuart, Greg J.

    2008-01-01

    The axon initial segment ( AIS) is a specialized region in neurons where action potentials are initiated. It is commonly assumed that this process requires a high density of voltage-gated sodium ( Na(+)) channels. Paradoxically, the results of patch-clamp studies suggest that the Na(+) channel

  5. Emotional Intelligence, Academic Procrastination and Academic ...

    African Journals Online (AJOL)

    Itwas therefore recommended that efforts should be made to look into other pressing factors like self-esteem, teacher's attitude, student's attitude, parental background among others which may be influencing student's poor academic achievement. Key words: Emotional Intelligence, Academic Procrastination, Academic ...

  6. The essence of the notion of «professional potential» within the framework of academic field of public administration

    Directory of Open Access Journals (Sweden)

    I. V. Polishchuk

    2016-07-01

    Conclusions of the research. Therefore professional potential of civil servants is a multifaceted characteristic of an individual that includes objective and subjective factors, latent capabilities, theoretical knowledge, empirical skills, practical experience, psychophysiological qualities, professional competence.

  7. Excitation of high numbers harmonics by flows of oscillators in a periodic potential

    International Nuclear Information System (INIS)

    Buts, V.A.; Marekha, V.I.; Tolstoluzhsky, A.P.

    2005-01-01

    It is shown that the maximum of radiation spectrum of nonrelativistic oscillators, which move into a periodically inhomogeneous potential, can be in the region of high numbers harmonics. Spectrum of such oscillators radiation becomes similar to the radiation spectrum of relativistic oscillators. The equations, describing the non-linear self-consistent theory of excitations, of high numbers harmonics by ensemble of oscillators are formulated and its numerical analysis is conducted. The numerical analysis has confirmed the capability of radiation of high numbers of harmonics. Such peculiarity of radiation allows t expect of creation of nonrelativistic FEL

  8. TGIF1 is a potential candidate gene for high myopia in ethnic Kashmiri population.

    Science.gov (United States)

    Ahmed, Ishfaq; Rasool, Shabhat; Jan, Tariq; Qureshi, Tariq; Naykoo, Niyaz A; Andrabi, Khurshid I

    2014-03-01

    High myopia is a complex disorder that imposes serious consequences on ocular health. Linkage analysis has identified several genetic loci with a series of potential candidate genes that reveal an ambiguous pattern of association with high myopia due to population heterogeneity. We have accordingly chosen to examine the prospect of association of one such gene [transforming growth β-induced factor 1 (TGIF1)] in population that is purely ethnic (Kashmiri) and represents a homogeneous cohort from Northern India. Cases with high myopia with a spherical equivalent of ≥-6 diopters (D) and emmetropic controls with spherical equivalent within ±0.5 D in one or both eyes represented by a sample size of 212 ethnic Kashmiri subjects and 239 matched controls. Genomic DNA was genotyped for sequence variations in TGIF1 gene and allele frequencies tested for Hardy-Weinberg disequilibrium. Potential association was evaluated using χ(2) or Fisher's exact test. Two previously reported missense variations C > T, rs4468717 (first base of codon 143) changing proline to serine and rs2229333 (second base of codon 143) changing proline to leucine were identified in exon 10 of TGIF1. Both variations exhibited possibly significant (p population. In silico predictions show that substitutions are likely to have an impact on the structure and functional properties of the protein, making it imperative to understand their functional consequences in relation to high myopia. TGIF1 is a relevant candidate gene with potential to contribute in the genesis of high myopia.

  9. Women in academic general surgery.

    Science.gov (United States)

    Schroen, Anneke T; Brownstein, Michelle R; Sheldon, George F

    2004-04-01

    To portray the professional experiences of men and women in academic general surgery with specific attention to factors associated with differing academic productivity and with leaving academia. A 131-question survey was mailed to all female (1,076) and a random 2:1 sample of male (2,152) members of the American College of Surgeons in three mailings between September 1998 and March 1999. Detailed questions regarding academic rank, career aspirations, publication rate, grant funding, workload, harassment, income, marriage and parenthood were asked. A five-point Likert scale measured influences on career satisfaction. Responses from strictly academic and tenure-track surgeons were analyzed and interpreted by gender, age, and rank. Overall, 317 surgeons in academic practice (168 men, 149 women) responded, of which 150 were in tenure-track positions (86 men, 64 women). Men and women differed in academic rank, tenure status, career aspirations, and income. Women surgeons had published a median of ten articles compared with 25 articles for men (p career satisfaction was high, but women reported feeling career advancement opportunities were not equally available to them as to their male colleagues and feeling isolation from surgical peers. Ten percent to 20% of surgeons considered leaving academia, with women assistant professors (29%) contemplating this most commonly. Addressing the differences between men and women academic general surgeons is critical in fostering career development and in recruiting competitive candidates of both sexes to general surgery.

  10. High resolution tsunami modelling for the evaluation of potential risk areas in Setúbal (Portugal

    Directory of Open Access Journals (Sweden)

    J. Ribeiro

    2011-08-01

    Full Text Available The use of high resolution hydrodynamic modelling to simulate the potential effects of tsunami events can provide relevant information about the most probable inundation areas. Moreover, the consideration of complementary data such as the type of buildings, location of priority equipment, type of roads, enables mapping of the most vulnerable zones, computing of the expected damage on man-made structures, constrain of the definition of rescue areas and escape routes, adaptation of emergency plans and proper evaluation of the vulnerability associated with different areas and/or equipment.

    Such an approach was used to evaluate the specific risks associated with a potential occurrence of a tsunami event in the region of Setúbal (Portugal, which was one of the areas most seriously affected by the 1755 tsunami.

    In order to perform an evaluation of the hazard associated with the occurrence of a similar event, high resolution wave propagation simulations were performed considering different potential earthquake sources with different magnitudes. Based on these simulations, detailed inundation maps associated with the different events were produced. These results were combined with the available information on the vulnerability of the local infrastructures (building types, roads and streets characteristics, priority buildings in order to impose restrictions in the production of high-scale potential damage maps, escape routes and emergency routes maps.

  11. Academic Self-Perceptions of Ability and Course Planning among Academically Advanced Students

    Science.gov (United States)

    Rudasill, Kathleen Moritz; Callahan, Carolyn M.

    2010-01-01

    The purpose of this study is to examine the contribution of gender to the academic self-perceptions of ability and related coursework plans for high school and college across academically advanced students. Participants were academically advanced students (N = 447) from grades 5 to 12. Findings revealed that (a) girls' self-perceptions of ability…

  12. Do academic knowledge brokers exist? Using social network analysis to explore academic research-to-policy networks from six schools of public health in Kenya.

    Science.gov (United States)

    Jessani, Nasreen S; Boulay, Marc G; Bennett, Sara C

    2016-06-01

    The potential for academic research institutions to facilitate knowledge exchange and influence evidence-informed decision-making has been gaining ground. Schools of public health (SPHs) may play a key knowledge brokering role-serving as agencies of and for development. Understanding academic-policymaker networks can facilitate the enhancement of links between policymakers and academic faculty at SPHs, as well as assist in identifying academic knowledge brokers (KBs). Using a census approach, we administered a sociometric survey to academic faculty across six SPHs in Kenya to construct academic-policymaker networks. We identified academic KBs using social network analysis (SNA) in a two-step approach: First, we ranked individuals based on (1) number of policymakers in their network; (2) number of academic peers who report seeking them out for advice on knowledge translation and (3) their network position as 'inter-group connectors'. Second, we triangulated the three scores and re-ranked individuals. Academic faculty scoring within the top decile across all three measures were classified as KBs. Results indicate that each SPH commands a variety of unique as well as overlapping relationships with national ministries in Kenya. Of 124 full-time faculty, we identified 7 KBs in 4 of the 6 SPHs. Those scoring high on the first measure were not necessarily the same individuals scoring high on the second. KBs were also situated in a wide range along the 'connector/betweenness' measure. We propose that a composite score rather than traditional 'betweenness centrality', provides an alternative means of identifying KBs within these networks. In conclusion, SNA is a valuable tool for identifying academic-policymaker networks in Kenya. More efforts to conduct similar network studies would permit SPH leadership to identify existing linkages between faculty and policymakers, shared linkages with other SPHs and gaps so as to contribute to evidence-informed health policies. © The

  13. Construction of high-dimensional neural network potentials using environment-dependent atom pairs.

    Science.gov (United States)

    Jose, K V Jovan; Artrith, Nongnuch; Behler, Jörg

    2012-05-21

    An accurate determination of the potential energy is the crucial step in computer simulations of chemical processes, but using electronic structure methods on-the-fly in molecular dynamics (MD) is computationally too demanding for many systems. Constructing more efficient interatomic potentials becomes intricate with increasing dimensionality of the potential-energy surface (PES), and for numerous systems the accuracy that can be achieved is still not satisfying and far from the reliability of first-principles calculations. Feed-forward neural networks (NNs) have a very flexible functional form, and in recent years they have been shown to be an accurate tool to construct efficient PESs. High-dimensional NN potentials based on environment-dependent atomic energy contributions have been presented for a number of materials. Still, these potentials may be improved by a more detailed structural description, e.g., in form of atom pairs, which directly reflect the atomic interactions and take the chemical environment into account. We present an implementation of an NN method based on atom pairs, and its accuracy and performance are compared to the atom-based NN approach using two very different systems, the methanol molecule and metallic copper. We find that both types of NN potentials provide an excellent description of both PESs, with the pair-based method yielding a slightly higher accuracy making it a competitive alternative for addressing complex systems in MD simulations.

  14. Foreign-born Peers and Academic Performance.

    Science.gov (United States)

    Conger, Dylan

    2015-04-01

    The academic performance of foreign-born youth in the United States is well studied, yet little is known about whether and how foreign-born students influence their classmates. In this article, I develop a set of expectations regarding the potential consequences of immigrant integration across schools, with a distinction between the effects of sharing schools with immigrants who are designated as English language learners (ELL) and those who are not. I then use administrative data on multiple cohorts of Florida public high school students to estimate the effect of immigrant shares on immigrant and native-born students' academic performance. The identification strategy pays careful attention to the selection problem by estimating the effect of foreign-born peers from deviations in the share foreign-born across cohorts of students attending the same school in different years. The assumption underlying this approach is that students choose schools based on the composition of the entire school, not on the composition of each entering cohort. The results of the analysis, which hold under several robustness checks, indicate that foreign-born peers (both those who are ELL and those who are non-ELL) have no effect on their high school classmates' academic performance.

  15. Self-Report and Academic Factors in Relation to High School Students' Success in an Innovative Biotechnology Program

    Science.gov (United States)

    Peterman, Karen; Pan, Yi; Robertson, Jane; Lee, Shelley Glenn

    2014-01-01

    Biotechnology constitutes one of the most challenging, cutting-edge, and rapidly growing fields in science today. Both the practical implications and the hands-on nature of this "modern science" make the topic of biotechnology an attractive addition to the high school science curriculum. The current study is the first of its kind to…

  16. High Structure Active Learning Pedagogy for the Teaching of Organic Chemistry: Assessing the Impact on Academic Outcomes

    Science.gov (United States)

    Crimmins, Michael T.; Midkiff, Brooke

    2017-01-01

    Organic Chemistry is a required course for programs in chemistry, biology, and many health science careers. It has historically been considered a highly challenging course with significant failure rates. As with many science disciplines, the teaching of Organic Chemistry has traditionally focused on unstructured exposition-centered delivery of…

  17. Increases in Academic Connectedness and Self-Esteem among High School Students Who Serve as Cross-Age Peer Mentors

    Science.gov (United States)

    Karcher, Michael

    2009-01-01

    Cross-age mentoring programs are peer helping programs in which high school students serve as mentors to younger children. The study in this article compared fall-to-spring changes on connectedness, attachment, and self-esteem between 46 teen mentors and 45 comparison classmates. Results revealed an association between serving as a cross-age peer…

  18. Zonation of High Disaster Potential Communities for Remote Mountainous Areas in Southern Taiwan

    Science.gov (United States)

    Chen, Yie-Ruey; Tsai, Kuang-Jung; Chang, Chwen-Ming; Chen, Jing-Wen; Chiang, Jie-Lun; Lu, Yi-Ching; Tsai, Hui-Wen

    2017-04-01

    About three-quarters of Taiwan are covered by hillside areas. Most of the hillside regions in Taiwan are sedimentary and metamorphic rocks which are fragile and highly weathered. In recent years, human development coupled with the global impact of extreme weather, typhoons and heavy rains have caused the landslide disasters and leaded to human causalities and properties loss. The landslides also endanger the major public works and almost make the overall industrial economic development and transport path overshadowed by disasters. Therefore, this research assesses the exploration of landslide potential analysis and zonation of high disaster potential communities for remote mountainous areas in southern Taiwan. In this study, the time series of disaster records and land change of remote mountainous areas in southern Taiwan are collected using techniques of interpretation from satellite images corresponding to multi-year and multi-rainfall events. To quantify the slope hazards, we adopt statistical analysis model to analyze massive data of slope disasters and explore the variance, difference and trend of influence factors of hillside disaster; establish the disaster potential analysis model under the climate change and construct the threshold of disaster. Through analysis results of disaster potential assessment, the settlement distribution with high-risk hazard potential of study area is drawn with geographic information system. Results of image classification show that the values of coefficient of agreement for different time periods are at high level. Compared with the historical disaster records of research areas, the accuracy of predicted landslide potential is in reasonable confidence level. The spatial distribution of landslide depends on the interaction of rainfall patterns, slope and elevation of the research area. The results also show that the number and scale of secondary landslide sites are much larger than those of new landslide sites after rainfall

  19. Academic Task Demand in the 21st-Century, High-Stakes-Accountability School: Mapping the Journey from Poor [To Fair to Good to Great] to Excellent?

    Science.gov (United States)

    Szczesiul, Stacy Agee; Nehring, James; Carey, Theodore

    2015-01-01

    Drawing on theoretical and empirical research concerning the relationship between academic work and student learning, this article explores the following questions: What skills are required to execute the academic tasks teachers assign on a daily basis? How do teachers and administrators interpret the task demands represented in instructional…

  20. How Does Gender Relate to Social Skills? Exploring Differences in Social Skills Mindsets, Academics, and Behaviors among High-School Freshmen Students

    Science.gov (United States)

    Tan, Kevin; Oe, Jin Shin; Hoang Le, Minh Dung

    2018-01-01

    Boys struggle academically and behaviorally more than girls and are more likely to have difficulty with social skills. It seems likely that boys and girls do not perceive social skills in the same light. Past research has not investigated this or its relationship to academic and behavioral performance. Using data from a cohort of 9th-grade…

  1. (How) Does Obesity Harm Academic Performance? Stratification at the Intersection of Race, Sex, and Body Size in Elementary and High School

    Science.gov (United States)

    Branigan, Amelia R.

    2017-01-01

    In this study I hypothesize a larger penalty of obesity on teacher-assessed academic performance for white girls in English, where femininity is privileged, than in math, where stereotypical femininity is perceived to be a detriment. This pattern of associations would be expected if obesity largely influences academic performance through social…

  2. A Comparison of the Academic Achievement and Perceptions of Leadership Skills and Citizenship Traits of JROTC, Student Athletes, and Other Students in an Urban High School Setting

    Science.gov (United States)

    Williams-Bonds, Carmen

    2013-01-01

    The purpose of this study was to compare three groups: JROTC students, student athletes, and other students, to determine if there were differences in academic achievement. Gaining an understanding of the necessary skills required to become academically successful and make healthy life choices, could provide educators working within an urban…

  3. Examination of the Relationship Amongst Parenting Dimensions, Academic Achievement, Career Decision Making, and Commitment Anxiety among African American High School Students

    Science.gov (United States)

    Bennett-Garraway, Jocelyn M.

    2011-01-01

    Do parents play a significant role in the academic achievement and career decision making process of African American children? Studies have confirmed the importance of the role of parents and have even identified preferred parenting styles as having the best academic achievement (Dornbusch, Ritter, Leiderman, Roberts, & Fraleigh, 1987;…

  4. Collective academic supervision

    DEFF Research Database (Denmark)

    Nordentoft, Helle Merete; Thomsen, Rie; Wichmann-Hansen, Gitte

    2013-01-01

    Supervision of students is a core activity in higher education. Previous research on student supervision in higher education focus on individual and relational aspects in the supervisory relationship rather than collective, pedagogical and methodical aspects of the planning of the supervision...... process. This article fills these gaps by discussing potentials and challenges in “Collective Academic Supervision”, a model for supervision at the Master of Education in Guidance at Aarhus University in Denmark. The pedagogical rationale behind the model is that students’ participation and learning...

  5. Dynamic Reference Electrode development for redox potential measurements in fluoride molten salt at high temperature

    International Nuclear Information System (INIS)

    Durán-Klie, Gabriela; Rodrigues, Davide; Delpech, Sylvie

    2016-01-01

    Measurement of redox potential in fluoride media is a major problem due to the difficulty to design a reference electrode with high stability, high mechanical resistance and high accuracy. In the frame of molten salt reactor studies, a dynamic reference electrode (DRE) is developed to measure redox potential in fluoride molten salt at high temperature. DRE is based on the in-situ generation of a transient redox system. The choice of the redox couple corresponds to the cathodic limit of the molten salt considered. As a preliminary step, the demonstration of feasibility of generating a DRE was done in LiF-NaF-KF (46.5–11.5–42 mol%) media at 500 °C. In this salt, the reference redox system generated by coulometry at applied current is KF/K, metallic potassium being electrodeposited on a tungsten wire electrode. The validation of the DRE response and the experimental optimization parameters for DRE generation were realized by following the NiF 2 /Ni redox potential evolution as a function of NiF 2 concentration in the fused salt. The current value applied for DRE generation was optimized. It depends on the amount of metallic cations contained in the fused salt and which can be electrochemically reduced simultaneously during the DRE generation. The current corresponding to the DRE generation has to be 4 times greater than the current corresponding to the reduction of the other elements.

  6. Rad51 expression levels predict synthetic lethality and metastatic potential in high grade breast cancers

    International Nuclear Information System (INIS)

    Wiegmans, A.P.; Al-Ejeh, F.; Khanna, K.K.

    2012-01-01

    Among women with breast cancer, 30-40% will develop metastatic disease and only achieve an overall survival of less than 5 years. Despite new-targeted therapy, breast tumors that harbour similar histology or molecular phenotype differ in their response to treatment. To uncover potential new therapeutic targets and improve outcome, we performed data mining of cancer micro array databases. We found that high expression of the homologous recombination protein, RAD51, was significantly associated with high-grade breast cancer, aggressive subtypes and increased risk of metastasis. We confirmed using immunohistochemistry that RAD5 1 was highly expressed in metastatic tumours and high-grade triple negative, HER2+ and luminal-B tumours. This provided a rationale for targeting RAD5 1 in high-grade, therapy-resistant breast cancers. Here, we report for the first time preclinical evaluation of RAD5 1 as a therapeutic target. We found that, in-vitro high RAD5 expressing cell lines were resistant to PARP inhibitor while knockdown reversed this resistance. In-vivo, knockdown of RAD5 1 inhibited metastatic progression using a syngeneic breast cancer model and the seeding of human xenografts to distant sites, including brain and lung. Concurrent PARP inhibition reduced primary tumor growth and delayed metastasis supporting synthetic lethality in-vivo. Together these insights provide pre-clinical data demonstrating RAD5 1 as a new biomarker and potential therapeutic target against aggressive metastatic breast cancer. (author)

  7. On the XFEL Schrödinger Equation: Highly Oscillatory Magnetic Potentials and Time Averaging

    KAUST Repository

    Antonelli, Paolo

    2014-01-14

    We analyse a nonlinear Schrödinger equation for the time-evolution of the wave function of an electron beam, interacting selfconsistently through a Hartree-Fock nonlinearity and through the repulsive Coulomb interaction of an atomic nucleus. The electrons are supposed to move under the action of a time dependent, rapidly periodically oscillating electromagnetic potential. This can be considered a simplified effective single particle model for an X-ray free electron laser. We prove the existence and uniqueness for the Cauchy problem and the convergence of wave-functions to corresponding solutions of a Schrödinger equation with a time-averaged Coulomb potential in the high frequency limit for the oscillations of the electromagnetic potential. © 2014 Springer-Verlag Berlin Heidelberg.

  8. Potential drop crack growth monitoring in high temperature biaxial fatigue tests

    International Nuclear Information System (INIS)

    Fitzgerald, B.P.; Krempl, E.

    1993-01-01

    The present work describes a procedure for monitoring crack growth in high temperature, biaxial, low cycle fatigue tests. The reversing DC potential drop equipment monitors smooth, tubular type 304 stainless steel specimens during fatigue testing. Electrical interference from an induction heater is filtered out by an analog filter and by using a long integration time. A Fourier smoothing algorithm and two spline interpolations process the large data set. The experimentally determined electrical potential drop is compared with the theoretical electrostatic potential that is found by solving Laplace's equation for an elliptical crack in a semi-infinite conducting medium. Since agreement between theory and experiment is good, the method can be used to measure crack growth to failure from the threshold of detectability

  9. ACADEMIC TRAINING LECTURES-QUESTIONNAIRE

    CERN Multimedia

    Françoise Benz

    2004-01-01

    ACADEMIC TRAINING Françoise Benz tel. 73127 academic.training@cern.ch SUGGEST AND WIN! Its time to plan the 2004-2005 lecture series. From today until March 19 you have the chance to give your contribution to planning for next year's Academic Training Lecture Series. At the web site: http://cern.ch/Academic.Training/questionnaire you will find questionnaires proposing topics in high energy physics, applied physics and science and society. Answering the questionnaire will help ensure that the selected topics are as close as possible to your interests. In particular requests and comments from students will be much appreciated. To encourage your contribution, the AT Committee will reward one lucky winner with a small prize, a 50 CHF coupon for a book purchase at the CERN bookshop.

  10. Analytic analysis on asymmetrical micro arcing in high plasma potential RF plasma systems

    International Nuclear Information System (INIS)

    Yin, Y; McKenzie, D R; Bilek, M M M

    2006-01-01

    We report experimental and analytical results on asymmetrical micro arcing in a RF (radio frequency) plasma. Micro arcing, resulting from high plasma potential, in RF plasma was found to occur only on the grounded electrode for a variety of electrode and surface configurations. The analytic derivation was based on a simple RF time-dependent Child-Langmuir sheath model and electric current continuity. We found that the minimum potential difference in one RF period across the grounded electrode sheath depends on the area ratio of the grounded electrode to the powered electrode. As the area ratio increases, the minimum potential difference across a sheath increases for the grounded electrode but not for the RF powered electrode. We showed that discharge time in micro arcing is more than 100 RF periods; thus the presence of a continuous high electric field in one RF cycle results in micro arcing on the grounded electrode. However, the minimum potential difference in one RF period across the powered electrode sheath is always small so that it prevents micro arcing occurring even though the average sheath voltage can be large. This simple analytic model is consistent with particle-in-cell simulation results

  11. High-dimensional neural network potentials for solvation: The case of protonated water clusters in helium

    Science.gov (United States)

    Schran, Christoph; Uhl, Felix; Behler, Jörg; Marx, Dominik

    2018-03-01

    The design of accurate helium-solute interaction potentials for the simulation of chemically complex molecules solvated in superfluid helium has long been a cumbersome task due to the rather weak but strongly anisotropic nature of the interactions. We show that this challenge can be met by using a combination of an effective pair potential for the He-He interactions and a flexible high-dimensional neural network potential (NNP) for describing the complex interaction between helium and the solute in a pairwise additive manner. This approach yields an excellent agreement with a mean absolute deviation as small as 0.04 kJ mol-1 for the interaction energy between helium and both hydronium and Zundel cations compared with coupled cluster reference calculations with an energetically converged basis set. The construction and improvement of the potential can be performed in a highly automated way, which opens the door for applications to a variety of reactive molecules to study the effect of solvation on the solute as well as the solute-induced structuring of the solvent. Furthermore, we show that this NNP approach yields very convincing agreement with the coupled cluster reference for properties like many-body spatial and radial distribution functions. This holds for the microsolvation of the protonated water monomer and dimer by a few helium atoms up to their solvation in bulk helium as obtained from path integral simulations at about 1 K.

  12. The impact of high- and low-preference stimuli on vocational and academic performances of youths with severe disabilities.

    Science.gov (United States)

    Graff, Richard B; Gibson, Lenwood; Galiatsatos, G Tracey

    2006-01-01

    Pictorial and tangible paired-stimulus preference assessments were compared with 4 adolescents with developmental disabilities. In the tangible assessment, two stimuli were placed in front of the participant on each trial; in the pictorial assessment, two line drawings were placed in front of the participant on each trial. Approach responses were recorded for each assessment. The assessments generated similar preference hierarchies for all participants. Reinforcer assessments confirmed that response rates were higher when access to high-preference items was available than when low-preference items were available. Implications for assessing preferences and selecting items to be used in training programs are discussed.

  13. STIR-Physics: Cold Atoms and Nanocrystals in Tapered Nanofiber and High-Q Resonator Potentials

    Science.gov (United States)

    2016-11-02

    STIR- Physics : Cold Atoms and Nanocrystals in Tapered Nanofiber and High-Q Resonator Potentials We worked on a tapered fiber in cold atomic cloud...reviewed journals: Number of Papers published in non peer-reviewed journals: Final Report: STIR- Physics : Cold Atoms and Nanocrystals in Tapered Nanofiber...other than abstracts): Number of Peer-Reviewed Conference Proceeding publications (other than abstracts): Books Number of Manuscripts: 0.00Number of

  14. Non-transferable van der Waals potentials: Insulators at high pressure

    International Nuclear Information System (INIS)

    Maggs, A.C.; Ashcroft, N.W.

    1987-01-01

    For a simple model whose cohesion is dominated by dispersion forces we show that the expansion of the energy in terms of multi-center interactions is ill conditioned at a low density. This density is physically realizable for systems with highly polarizable atoms, and in these circumstances an alternative expression for the internal energy is required. For polarizable systems the requisite densities are readily achievable with the use of modern high pressure capabilities, and have consequences for the interpretation of equation of state data in terms of potential energy functions. 13 refs., 3 figs

  15. Connection for transfer of Liquid Nitrogen from High Voltage to ground potential

    DEFF Research Database (Denmark)

    Rasmussen, Claus Nygaard; Hansen, Finn; Willén, Dag

    2001-01-01

    In order to operate a superconducting cable conductor it must be kept at a cryogenic temperature (e.g. using liquid nitrogen). The superconducting cable conductor is at high voltage and the cooling equipment is kept at ground potential. This requires a thermally insulating connection that is also...... properties and withstand towards high-pressure liquid nitrogen. The length per joint is approximately 900 mm, including a Johnstoncoupling. The joints are tested in a closed liquid nitrogen circuit, with a pressure of up to 10 bars. The rated voltage of the cable system is 36 kV (phase-phase)....

  16. Physical and electrochemical properties of ZnO films fabricated from highly cathodic electrodeposition potentials

    Science.gov (United States)

    Ismail, Abdul Hadi; Abdullah, Abdul Halim; Sulaiman, Yusran

    2017-03-01

    The physical and electrochemical properties of zinc oxide (ZnO) film electrode that were prepared electrochemically were studied. ZnO was electrodeposited on ITO glass substrate by applying three different highly cathodic potentials (-1.3 V, -1.5 V, -1.7 V) in a solution containing 70 mM of Zn(NO3)2.xH2O and 0.1 M KCl with bath temperatures of 70 °C and 80 °C. The presence of ZnO was asserted from XRD analysis where the corresponding peaks in the spectra were assigned. SEM images revealed the plate-like hexagonal morphology of ZnO which is in agreement with the XRD analysis. The areal capacitance of the ZnO was observed to increase when the applied electrodeposition potential is increased from -1.3 V to -1.5 V. However, the areal capacitance is found to decrease when the applied electrodeposition potential is further increased to -1.7 V. The resistance of charge transfer (Rct) of the ZnO decreased when the applied electrodeposition potential varies from -1.3 V to -1.7 V due to the decreased particle size of ZnO when more cathodic electrodeposition potential is applied.

  17. Virtual Learning Simulations in High School: Effects on Cognitive and Non-cognitive Outcomes and Implications on the Development of STEM Academic and Career Choice

    Directory of Open Access Journals (Sweden)

    Malene Thisgaard

    2017-05-01

    Full Text Available The present study compared the value of using a virtual learning simulation compared to traditional lessons on the topic of evolution, and investigated if the virtual learning simulation could serve as a catalyst for STEM academic and career development, based on social cognitive career theory. The investigation was conducted using a crossover repeated measures design based on a sample of 128 high school biology/biotech students. The results showed that the virtual learning simulation increased knowledge of evolution significantly, compared to the traditional lesson. No significant differences between the simulation and lesson were found in their ability to increase the non-cognitive measures. Both interventions increased self-efficacy significantly, and none of them had a significant effect on motivation. In addition, the results showed that the simulation increased interest in biology related tasks, but not outcome expectations. The findings suggest that virtual learning simulations are at least as efficient in enhancing learning and self-efficacy as traditional lessons, and high schools can thus use them as supplementary educational methods. In addition, the findings indicate that virtual learning simulations may be a useful tool in enhancing student’s interest in and goals toward STEM related careers.

  18. Virtual Learning Simulations in High School: Effects on Cognitive and Non-cognitive Outcomes and Implications on the Development of STEM Academic and Career Choice.

    Science.gov (United States)

    Thisgaard, Malene; Makransky, Guido

    2017-01-01

    The present study compared the value of using a virtual learning simulation compared to traditional lessons on the topic of evolution, and investigated if the virtual learning simulation could serve as a catalyst for STEM academic and career development, based on social cognitive career theory. The investigation was conducted using a crossover repeated measures design based on a sample of 128 high school biology/biotech students. The results showed that the virtual learning simulation increased knowledge of evolution significantly, compared to the traditional lesson. No significant differences between the simulation and lesson were found in their ability to increase the non-cognitive measures. Both interventions increased self-efficacy significantly, and none of them had a significant effect on motivation. In addition, the results showed that the simulation increased interest in biology related tasks, but not outcome expectations. The findings suggest that virtual learning simulations are at least as efficient in enhancing learning and self-efficacy as traditional lessons, and high schools can thus use them as supplementary educational methods. In addition, the findings indicate that virtual learning simulations may be a useful tool in enhancing student's interest in and goals toward STEM related careers.

  19. Burnout and Its Contributing Factors Among Midlevel Academic Nurse Leaders.

    Science.gov (United States)

    Flynn, Linda; Ironside, Pamela M

    2018-01-01

    Amid concerns regarding administrator shortages, a survey conducted by the American Association of Colleges of Nursing indicates that 10% of all vacant faculty positions are those that include administrative responsibilities. This study was designed to determine the frequency, predictors, and potential retention consequences of burnout among midlevel academic nurse leaders, such as assistant deans, associate deans, and others. The sample consisted of 146 midlevel academic nurse leaders from 29 schools of nursing. Burnout was measured by the emotional exhaustion subscale of the Maslach Burnout Inventory. Logistic regression models were estimated to determine effects of study variables on burnout and intent to leave. Dissatisfaction with workload, dissatisfaction with work-life balance, and hours typically worked per week increased odds of burnout. Burnout was associated with intent to leave. High workloads and long work weeks are increasing the odds of burnout among midlevel academic nurse leaders. [J Nurs Educ. 2018;57(1):28-34.]. Copyright 2018, SLACK Incorporated.

  20. Academics and Citizens Working Together

    Science.gov (United States)

    Bogen, D., Jr.

    2017-12-01

    Traditionally Academics and citizens have contributed to each other lives but friction has always existed between the two. When there is a hostile relationship between community members and Academics, the collection of data suffers, which in returns hurts the potential solutions to community problems. Combining Community Based Participatory Research and the BISCO Community Organizing Model, {Listens, Identify, Research, offer solution}, these frictions can be limited, creating better working environments, and producing better data. Helping create and participating in workgroups, including NGO's, Academics and Citizens leaders, have produce better working environments. Using these methods within the work groups I observed, relationships being form between Academics and Citizens. Some of the relationships were both public and private. The workgroups that created space for professional and personal stories telling produced the most relationships. Listening and understand each other, before research have proven to be successful in producing trust between Academics and Citizens. When Academics and Citizens developed trust between themselves, each party respects the other limitation. Knowing each limitation is perhaps the most key element in working together, which eliminates over promises and culture hindrance within the community. It's amazing like getting the answers to the test before you take it. The project becomes richer in design, when there is trust in the process before it begins. Working together to eliminating potential road blocks ahead of time, enhance the project chances to produce, richer data.Academics cannot produce good data if citizens withhold information and citizens cannot solve their social ills if they do not have good data, in short we need each other.

  1. Role of Self Efficacy Predictors in Nutritional Behaviors of Kerman High School Female Students in 2006-2007 Academic Year

    Directory of Open Access Journals (Sweden)

    AA Haghdoost

    2008-10-01

    Full Text Available Introduction: Enhancing the nutritional condition of teenaged girls can be the most effective and fundamental preventive measure against chronic disease in years ahead. Knowing the predictive factors of behaviors is one the most efficient way of preventive programs in societies, especially in the developing countries. This study was conducted to determine the role of self– efficacy in predicting the dietary behaviors of Kerman high school girls in 2006-2007. Methods: In this correlation study, girl students in Kerman high schools were selected as research population. Based on pilot study, sample size was estimated to be 800 students. Taking into consideration sample drop out, 900 questionnaires were distributed, and 812 were finally analyzed. Data were gathered using research– made questionnaire comprising of 5 parts including general & demographic questions, dietary behaviors, dietary self– efficacy, physical activity and exercise self– efficacy. Data were collected and analyzed following validity and reliability determination. Results: Results indicated that most students (57/4% were 16 years of age or younger, and the obtained total scores in the dietary behavior and related self- efficacy was 66% and 61%, respectively. The results of the multiple regression model showed that besides dietary self– efficacy, factors including level of fathers education, assessment of the family status in comparison with others from the student’s point of view, importance of safe and healthy food consumption, right of choosing desired foods, number of meals served with family, and mother’s occupation were among the predictive factors of dietary behavior. Conclusion: The results have confirmed the role of self– efficacy concepts, according to Pender’s model as a health promoting behavior. Therefore, increased self– efficacy methods such adverbial stimulation and good model offer can be used as one of the health behaviors promotion factors

  2. Social Networking and Academic Performance: A Review

    Science.gov (United States)

    Doleck, Tenzin; Lajoie, Susanne

    2018-01-01

    The ubiquitous use of social networking sites by students and the potential impacts of such use on academic performance are of both theoretical and practical importance. Hence, this paper addresses the question: how does the use of social networking sites influence academic performance? The present review synthesizes the empirical findings of the…

  3. Peer relationships and adolescents' academic and non-academic outcomes: same-sex and opposite-sex peer effects and the mediating role of school engagement.

    Science.gov (United States)

    Liem, Gregory Arief D; Martin, Andrew J

    2011-06-01

    The literature has documented theoretical/conceptual models delineating the facilitating role of peer relationships in academic and non-academic outcomes. However, the mechanisms through which peer relationships link to those outcomes is an area requiring further research. The study examined the role of adolescents' perceptions of their relationships with same-sex and opposite-sex peers in predicting their academic performance and general self-esteem and the potentially mediating role of school engagement in linking these perceived peer relationships with academic and non-academic outcomes. The sample comprised 1,436 high-school students (670 boys, 756 girls; 711 early adolescents, 723 later adolescents). Self-report measures and objective achievement tests were used. Structural equation modelling (SEM) was performed to test the hypothesized model and its invariance across gender and age groups. Perceived same-sex peer relationships yielded positive direct and indirect links with academic performance and general self-esteem. Perceived opposite-sex peer relationships yielded positive direct and indirect links with general self-esteem and an indirect positive link with academic performance, but mediation via school engagement was not as strong as that of perceived same-sex peer relationships. These findings generalized across gender and age groups. Adolescents' same-sex and opposite-sex peer relationships seem to positively impact their academic performance and general self-esteem in distinct ways. It appears that school engagement plays an important role in mediating these peer relationship effects, particularly those of same-sex peer relationships, on academic and non-academic functioning. Implications for psycho-educational theory, measurement, and practice are discussed. ©2011 The British Psychological Society.

  4. LIFTING THE VEIL OF SILENCE: EXPLORING ACADEMIC EXPERIENCES OF MALE REFUGEE LEARNERS AT A HIGH SCHOOL IN JOHANNESBURG, SOUTH AFRICA

    Directory of Open Access Journals (Sweden)

    Sobantu, Mziwandile

    2013-05-01

    Full Text Available Children who flee home face numerous challenges to their development and survival. A recent report by the United Nations High Commission for Refugees (UNHCR (2012 stated that 46% of refugees are children under the age of 18. Political instability (Ong’ayo, 2008, climatic changes (Afifi, Govil, Sakdapolrak & Warner, 2012, ethnic cleansing and civil wars (De Jong, 2002, post-election violence (Adeagbo & Iyi, 2011, and socio-economic challenges (Adepoju, 2002 in Africa have forced many of these young people to leave their communities and countries to search for a better life, safety and security in other countries. It is apparent that being resettled as a refugee in another country does not in itself ensure stability or achievement of a sense of belonging, or that those psycho-emotional wounds will automatically disappear (Gomez & Christensen, 2011; Kimi & Mwaruvie, 2012. Certainly, special protection ought to be accorded to refugee children, because their growth and development have been hampered. Traumatic ordeals leave them vulnerable and they have to face additional challenges not experienced by other children in their age group.

  5. Maternal Involvement and Academic Achievement.

    Science.gov (United States)

    Lopez, Linda C.; Holmes, William M.

    The potential impact of several maternal involvement behaviors on teachers' ratings of children's academic skills was examined through statistical analyses. Data, based on mothers' responses to selected questions concerning maternal involvement and on teachers' ratings on the Classroom Behavior Inventory, were obtained for 115 kindergarten…

  6. Analysis of the functional gene structure and metabolic potential of microbial community in high arsenic groundwater.

    Science.gov (United States)

    Li, Ping; Jiang, Zhou; Wang, Yanhong; Deng, Ye; Van Nostrand, Joy D; Yuan, Tong; Liu, Han; Wei, Dazhun; Zhou, Jizhong

    2017-10-15

    Microbial functional potential in high arsenic (As) groundwater ecosystems remains largely unknown. In this study, the microbial community functional composition of nineteen groundwater samples was investigated using a functional gene array (GeoChip 5.0). Samples were divided into low and high As groups based on the clustering analysis of geochemical parameters and microbial functional structures. The results showed that As related genes (arsC, arrA), sulfate related genes (dsrA and dsrB), nitrogen cycling related genes (ureC, amoA, and hzo) and methanogen genes (mcrA, hdrB) in groundwater samples were correlated with As, SO 4 2- , NH 4 + or CH 4 concentrations, respectively. Canonical correspondence analysis (CCA) results indicated that some geochemical parameters including As, total organic content, SO 4 2- , NH 4 + , oxidation-reduction potential (ORP) and pH were important factors shaping the functional microbial community structures. Alkaline and reducing conditions with relatively low SO 4 2- , ORP, and high NH 4 + , as well as SO 4 2- and Fe reduction and ammonification involved in microbially-mediated geochemical processes could be associated with As enrichment in groundwater. This study provides an overall picture of functional microbial communities in high As groundwater aquifers, and also provides insights into the critical role of microorganisms in As biogeochemical cycling. Copyright © 2017 Elsevier Ltd. All rights reserved.

  7. Nonlinear electron acoustic structures generated on the high-potential side of a double layer

    Directory of Open Access Journals (Sweden)

    R. Pottelette

    2009-04-01

    Full Text Available High-time resolution measurements of the electron distribution function performed in the auroral upward current region reveals a large asymmetry between the low- and high-potential sides of a double-layer. The latter side is characterized by a large enhancement of a locally trapped electron population which corresponds to a significant part (~up to 30% of the total electron density. As compared to the background hot electron population, this trapped component has a very cold temperature in the direction parallel to the static magnetic field. Accordingly, the differential drift between the trapped and background hot electron populations generates high frequency electron acoustic waves in a direction quasi-parallel to the magnetic field. The density of the trapped electron population can be deduced from the frequency where the electron acoustic spectrum maximizes. In the auroral midcavity region, the electron acoustic waves may be modulated by an additional turbulence generated in the ion acoustic range thanks to the presence of a pre-accelerated ion beam located on the high-potential side of the double layer. Electron holes characterized by bipolar pulses in the electric field are sometimes detected in correlation with these electron acoustic wave packets.

  8. Electromagnetic Acoustic Transducers Applied to High Temperature Plates for Potential Use in the Solar Thermal Industry

    Directory of Open Access Journals (Sweden)

    Maria Kogia

    2015-12-01

    Full Text Available Concentrated Solar Plants (CSPs are used in solar thermal industry for collecting and converting sunlight into electricity. Parabolic trough CSPs are the most widely used type of CSP and an absorber tube is an essential part of them. The hostile operating environment of the absorber tubes, such as high temperatures (400–550 °C, contraction/expansion, and vibrations, may lead them to suffer from creep, thermo-mechanical fatigue, and hot corrosion. Hence, their condition monitoring is of crucial importance and a very challenging task as well. Electromagnetic Acoustic Transducers (EMATs are a promising, non-contact technology of transducers that has the potential to be used for the inspection of large structures at high temperatures by exciting Guided Waves. In this paper, a study regarding the potential use of EMATs in this application and their performance at high temperature is presented. A Periodic Permanent Magnet (PPM EMAT with a racetrack coil, designed to excite Shear Horizontal waves (SH0, has been theoretically and experimentally evaluated at both room and high temperatures.

  9. Highly lipophilic pluronics-conjugated polyamidoamine dendrimer nanocarriers as potential delivery system for hydrophobic drugs

    Energy Technology Data Exchange (ETDEWEB)

    Nguyen, Thi Tram Chau [Institute of Research and Development, Duy Tan University, Da Nang City 550000 (Viet Nam); Department of Chemical Engineering, Industrial University of HCMC, HCMC 70000 (Viet Nam); Nguyen, Cuu Khoa, E-mail: nckhoavnn@yahoo.com [Department of Materials and Pharmaceutical Chemistry, Vietnam Academy of Science and Technology, HCMC 70000 (Viet Nam); Nguyen, Thi Hiep [Biomedical Engineering Department, International University, National Universities in HCMC, HCMC 70000 (Viet Nam); Tran, Ngoc Quyen, E-mail: tnquyen@iams.vast.vn [Institute of Research and Development, Duy Tan University, Da Nang City 550000 (Viet Nam); Department of Materials and Pharmaceutical Chemistry, Vietnam Academy of Science and Technology, HCMC 70000 (Viet Nam)

    2017-01-01

    In the study, four kinds of pluronics (P123, F68, F127 and F108) with varying hydrophilic-lipophilic balance (HLB) values were modified and conjugated on 4th generation of polyamidoamine dendrimer (PAMAM). The obtained results from FT-IR, {sup 1}H NMR and GPC showed that the pluronics effectively conjugated on the dendrimer. The molecular weight of four PAMAM G4.0-Pluronics and its morphologies are in range of 200.15–377.14 kDa and around 60–180 nm in diameter by TEM, respectively. Loading efficiency and release of hydrophobic fluorouracil (5-FU) anticancer drug were evaluated by HPLC; Interesting that the dendrimer nanocarrier was conjugated with the highly lipophilic pluronic P123 (G4.0-P123) exhibiting a higher drug loading efficiency (up to 76.25%) in comparison with another pluronics. Live/dead fibroblast cell staining assay mentioned that all conjugated nanocarriers are highly biocompatible. The drug-loaded nanocarriers also indicated a highly anti-proliferative activity against MCF-7 breast cancer cell. The obtained results demonstrated a great potential of the highly lipophilic pluronics-conjugated nanocarriers in hydrophobic drugs delivery for biomedical applications. - Highlights: • Biocompatible pluronic-conjugated polyamidoamine dendrimers were prepared at nanoscale for drug delivery. • The dendrimer nanocarrier was decorated with a lipophilic pluronic exhibiting a higher drug loading efficiency. • The pluronic-functionalized nanocarriers demonstrated a great potential for delivering hydrophobic drugs.

  10. Meaningful Academic Work as Praxis in Emergence

    Directory of Open Access Journals (Sweden)

    Keijo Räsänen

    2008-01-01

    Full Text Available The managerial form of university governance has changed the conditions of academic work in many countries. While some academics consider this a welcome development, others experience it as a threat to their autonomy and to the meaningfulness of their work. This essay suggests a stance in response to the current conditions that should serve especially the latter group of academics. The claim is that by approaching academic work as a potential praxis in emergence, it is possible to appreciate local, autonomous activity in renewing academic work. Even if such efforts remain difficult, dispersed in space, discontinuous in time, and incomplete, they may provide a sense of direction and keep up hope. The conception of praxis is a way of articulating the mission of such efforts; simultaneously, it is also a way of defining an epistemic object for research on academic work.

  11. The effect of excellence funding on academic research prac-tices: comparing 16 Dutch research groups

    NARCIS (Netherlands)

    Scholten, Wout; Hessels, Laurens; van Drooge, L.

    2017-01-01

    In the last 25 years academic research in The Netherlands has seen a rise of excellence oriented research policy instruments. These excellence funding schemes aim to selectively support high-performing and high-potential individuals or organizations, in order to increase differentiation within the

  12. The potential of large critical currents in the high Tc oxides

    International Nuclear Information System (INIS)

    Deutcher, G.

    1993-01-01

    The potential for high critical current densities is examined. on a thermodynamical basis, the energy scale for vortex pinning can be derived for instance from a measurement of the width of the critical region. This energy scale is of the order of 0.2 eV in YBCO, which is sufficient for practical applications. Another important parameter is the short coherence length. The inner plane length, of the order of a few lattice spacing, is favorable for pinning by point defects. But the very short outer plane length gives rise to anomalous magnetic behavior, unfavorable for high-field applications at high temperature; this is true in particular in most anisotropic oxides, such as the Bi compounds (author)

  13. Effect of outer hair cell piezoelectricity on high-frequency receptor potentials.

    Science.gov (United States)

    Spector, Alexander A; Brownell, William E; Popel, Aleksander S

    2003-01-01

    The low-pass voltage response of outer hair cells predicted by conventional equivalent circuit analysis would preclude the active force production at high frequencies. We have found that the band pass characteristics can be improved by introducing the piezoelectric properties of the cell wall. In contrast to the conventional analysis, the receptor potential does not tend to zero and at any frequency is greater than a limiting value. In addition, the phase shift between the transduction current and receptor potential tends to zero. The piezoelectric properties cause an additional, strain-dependent, displacement current in the cell wall. The wall strain is estimated on the basis of a model of the cell deformation in the organ of Corti. The limiting value of the receptor potential depends on the ratio of a parameter determined by the piezoelectric coefficients and the strain to the membrane capacitance. In short cells, we have found that for the low-frequency value of about 2-3 mV and the strain level of 0.1% the receptor potential can reach 0.4 mV throughout the whole frequency range. In long cells, we have found that the effect of the piezoelectric properties is much weaker. These results are consistent with major features of the cochlear amplifier.

  14. Electroosmotic flow of Phan-Thien-Tanner fluids at high zeta potentials: An exact analytical solution

    Science.gov (United States)

    Sarma, Rajkumar; Deka, Nabajit; Sarma, Kuldeep; Mondal, Pranab Kumar

    2018-06-01

    We present a mathematical model to study the electroosmotic flow of a viscoelastic fluid in a parallel plate microchannel with a high zeta potential, taking hydrodynamic slippage at the walls into account in the underlying analysis. We use the simplified Phan-Thien-Tanner (s-PTT) constitutive relationships to describe the rheological behavior of the viscoelastic fluid, while Navier's slip law is employed to model the interfacial hydrodynamic slip. Here, we derive analytical solutions for the potential distribution, flow velocity, and volumetric flow rate based on the complete Poisson-Boltzmann equation (without considering the frequently used Debye-Hückel linear approximation). For the underlying electrokinetic transport, this investigation primarily reveals the influence of fluid rheology, wall zeta potential as modulated by the interfacial electrochemistry and interfacial slip on the velocity distribution, volumetric flow rate, and fluid stress, as well as the apparent viscosity. We show that combined with the viscoelasticity of the fluid, a higher wall zeta potential and slip coefficient lead to a phenomenal enhancement in the volumetric flow rate. We believe that this analysis, besides providing a deep theoretical insight to interpret the transport process, will also serve as a fundamental design tool for microfluidic devices/systems under electrokinetic influence.

  15. Biofortification: High zinc wheat programme – The potential agricultural options for alleviating malnutrition in Pakistan

    Directory of Open Access Journals (Sweden)

    Qadir Bux Baloch

    2015-07-01

    Full Text Available The deficiency of micronutrients (zinc, iron, iodine and vitamin A is persistently afflicting millions of people living across Africa, Southern Americas, Asia and Pakistan. Among these, the zinc deficiency syndrome is occurring by 47.6, 41.3, and 39.2% in pregnant, non-pregnant and children under 5 years, respectively in Pakistan. The reason being that majority of the people subsists on cereal-based diets, i.e., wheat. The commercially grown wheat varieties contain zinc about 25 mg/g, whereas about 40 mg/g zinc is required in daily diet.The potential risk of zinc deficiency could be mitigated through certain interventions i.e., mineral drugs, food supplements, diversity in diets, production of fortified foods, and genetic biofortification of staple food crops. Among these, quantum increase in zinc content in wheat grains through genetic manipulation would be basics to alleviate zinc deficiency in the malnourished communities. The objective of the programme is to enhance the concentration of zinc nutrient from 25 to 40 mg/g in wheat grains through conventional plant breeding techniques.Pakistan Agricultural Research Council, Islamabad in collaboration with Consultative Group on International Agricultural Research (CGIAR and International Maize & Wheat Improvement Center (CIMMYT and HarvestPlus, Pakistan started R&D works to develop biofortified high zinc wheat varieties containing around 40 mg/g in the year 2009. The biofortified wheat crop is developed through conventional plant breeding techniques. The germplasm inherited with high zinc nutrient are crossed with high yielding and adopted to ecological conditions. The varieties are high yielding, and inheriting zinc around 40 mg/g in the grains under both irrigated and rainfed production environments. The Government of Punjab has also given high priority to develop and consume biofortified high zinc wheat in its multi-sectoral Nutrition Strategy Plan 2015, as potential agricultural option to

  16. High school and college biology: A multi-level model of the effects of high school biology courses on student academic performance in introductory college biology courses

    Science.gov (United States)

    Loehr, John Francis

    The issue of student preparation for college study in science has been an ongoing concern for both college-bound students and educators of various levels. This study uses a national sample of college students enrolled in introductory biology courses to address the relationship between high school biology preparation and subsequent introductory college biology performance. Multi-Level Modeling was used to investigate the relationship between students' high school science and mathematics experiences and college biology performance. This analysis controls for student demographic and educational background factors along with factors associated with the college or university attended. The results indicated that high school course-taking and science instructional experiences have the largest impact on student achievement in the first introductory college biology course. In particular, enrollment in courses, such as high school Calculus and Advanced Placement (AP) Biology, along with biology course content that focuses on developing a deep understanding of the topics is found to be positively associated with student achievement in introductory college biology. On the other hand, experiencing high numbers of laboratory activities, demonstrations, and independent projects along with higher levels of laboratory freedom are associated with negative achievement. These findings are relevant to high school biology teachers, college students, their parents, and educators looking beyond the goal of high school graduation.

  17. Reflections on academic video

    Directory of Open Access Journals (Sweden)

    Thommy Eriksson

    2012-11-01

    Full Text Available As academics we study, research and teach audiovisual media, yet rarely disseminate and mediate through it. Today, developments in production technologies have enabled academic researchers to create videos and mediate audiovisually. In academia it is taken for granted that everyone can write a text. Is it now time to assume that everyone can make a video essay? Using the online journal of academic videos Audiovisual Thinking and the videos published in it as a case study, this article seeks to reflect on the emergence and legacy of academic audiovisual dissemination. Anchoring academic video and audiovisual dissemination of knowledge in two critical traditions, documentary theory and semiotics, we will argue that academic video is in fact already present in a variety of academic disciplines, and that academic audiovisual essays are bringing trends and developments that have long been part of academic discourse to their logical conclusion.

  18. High volume hydraulic fracturing operations: potential impacts on surface water and human health.

    Science.gov (United States)

    Mrdjen, Igor; Lee, Jiyoung

    2016-08-01

    High volume, hydraulic fracturing (HVHF) processes, used to extract natural gas and oil from underground shale deposits, pose many potential hazards to the environment and human health. HVHF can negatively affect the environment by contaminating soil, water, and air matrices with potential pollutants. Due to the relatively novel nature of the process, hazards to surface waters and human health are not well known. The purpose of this article is to link the impacts of HVHF operations on surface water integrity, with human health consequences. Surface water contamination risks include: increased structural failure rates of unconventional wells, issues with wastewater treatment, and accidental discharge of contaminated fluids. Human health risks associated with exposure to surface water contaminated with HVHF chemicals include increased cancer risk and turbidity of water, leading to increased pathogen survival time. Future research should focus on modeling contamination spread throughout the environment, and minimizing occupational exposure to harmful chemicals.

  19. Healthy lifestyle behaviours are positively and independently associated with academic achievement: An analysis of self-reported data from a nationally representative sample of Canadian early adolescents.

    Directory of Open Access Journals (Sweden)

    Erin L Faught

    Full Text Available The lifestyle behaviours of early adolescents, including diet, physical activity, sleep, and screen usage, are well established contributors to health. These behaviours have also been shown to be associated with academic achievement. Poor academic achievement can additionally contribute to poorer health over the lifespan. This study aims to characterize the associations between health behaviours and self-reported academic achievement.Data from the 2014 Canadian Health Behaviour in School-Aged Children Study (n = 28,608, ages 11-15 were analyzed. Students provided self-report of academic achievement, diet, physical activity, sleep duration, recreational screen time usage, height, weight, and socioeconomic status. Multi-level logistic regression was used to assess the relationship of lifestyle behaviours and body weight status with academic achievement while considering sex, age, and socioeconomic status as potential confounders.All health behaviours exhibited independent associations with academic achievement. Frequent consumption of vegetables and fruits, breakfast and dinner with family and regular physical activity were positively associated with higher levels of academic achievement, while frequent consumption of junk food, not meeting sleep recommendations, and overweight and obesity were negatively associated with high academic achievement.The present findings demonstrate that lifestyle behaviours are associated with academic achievement, potentially identifying these lifestyle behaviours as effective targets to improve academic achievement in early adolescents. These findings also justify investments in school-based health promotion initiatives.

  20. Healthy lifestyle behaviours are positively and independently associated with academic achievement: An analysis of self-reported data from a nationally representative sample of Canadian early adolescents.

    Science.gov (United States)

    Faught, Erin L; Gleddie, Doug; Storey, Kate E; Davison, Colleen M; Veugelers, Paul J

    2017-01-01

    The lifestyle behaviours of early adolescents, including diet, physical activity, sleep, and screen usage, are well established contributors to health. These behaviours have also been shown to be associated with academic achievement. Poor academic achievement can additionally contribute to poorer health over the lifespan. This study aims to characterize the associations between health behaviours and self-reported academic achievement. Data from the 2014 Canadian Health Behaviour in School-Aged Children Study (n = 28,608, ages 11-15) were analyzed. Students provided self-report of academic achievement, diet, physical activity, sleep duration, recreational screen time usage, height, weight, and socioeconomic status. Multi-level logistic regression was used to assess the relationship of lifestyle behaviours and body weight status with academic achievement while considering sex, age, and socioeconomic status as potential confounders. All health behaviours exhibited independent associations with academic achievement. Frequent consumption of vegetables and fruits, breakfast and dinner with family and regular physical activity were positively associated with higher levels of academic achievement, while frequent consumption of junk food, not meeting sleep recommendations, and overweight and obesity were negatively associated with high academic achievement. The present findings demonstrate that lifestyle behaviours are associated with academic achievement, potentially identifying these lifestyle behaviours as effective targets to improve academic achievement in early adolescents. These findings also justify investments in school-based health promotion initiatives.

  1. Concussion Characteristics in High School Football by Helmet Age/Recondition Status, Manufacturer, and Model: 2008-2009 Through 2012-2013 Academic Years in the United States.

    Science.gov (United States)

    Collins, Christy L; McKenzie, Lara B; Ferketich, Amy K; Andridge, Rebecca; Xiang, Huiyun; Comstock, R Dawn

    2016-06-01

    Football helmets used by high school athletes in the United States should meet the National Operating Committee on Standards for Athletic Equipment performance standards. Despite differences in interior padding and exterior shells, all football helmets should provide comparable protection against concussions. Yet, debate continues on whether differences in the rates or severity of concussions exist based on helmet age/recondition status, manufacturer, or model. To investigate whether high school football concussion characteristics varied by helmet age/recondition status, manufacturer, and model. Descriptive epidemiological study. High school football concussion and helmet data were collected from academic years 2008-2009 through 2012-2013 as part of the National High School Sports-Related Injury Surveillance Study. The certified athletic trainers of participating schools submitted athlete-exposure (AE) and injury information weekly. Participating schools reported 2900 football concussions during 3,528,790 AEs for an overall rate of 8.2 concussions per 10,000 AEs. Concussion rates significantly increased from 2008-2009 through 2012-2013 overall (P = .006) as well as in competition (P = .027) and practice (P = .023). Characteristics of concussed football players (ie, mean number of symptoms, specific concussion symptoms, symptom resolution time, and time until return to play) were similar among players wearing new helmets when compared with reconditioned helmets. Fewer players wearing an old/not reconditioned helmet had concussion symptoms resolve within 1 day compared with players wearing a new helmet. Despite differences in the manufacturers and models of helmets worn by all high school football players compared with players who sustained a concussion, the mean number of concussion symptoms, specific concussion symptoms, symptom resolution time, and time until return to play were similar for concussions sustained by football players wearing the most common helmet

  2. ALDH2 Inhibition Potentiates High Glucose Stress-Induced Injury in Cultured Cardiomyocytes

    Directory of Open Access Journals (Sweden)

    Guodong Pan

    2016-01-01

    Full Text Available Aldehyde dehydrogenase (ALDH gene superfamily consists of 19 isozymes. They are present in various organs and involved in metabolizing aldehydes that are biologically generated. For instance, ALDH2, a cardiac mitochondrial ALDH isozyme, is known to detoxify 4-hydroxy-2-nonenal, a reactive aldehyde produced upon lipid peroxidation in diabetic conditions. We hypothesized that inhibition of ALDH leads to the accumulation of unmetabolized 4HNE and consequently exacerbates injury in cells subjected to high glucose stress. H9C2 cardiomyocyte cell lines were pretreated with 10 μM disulfiram (DSF, an inhibitor of ALDH2 or vehicle (DMSO for 2 hours, and then subjected to high glucose stress {33 mM D-glucose (HG or 33 mM D-mannitol as an osmotic control (Ctrl} for 24 hrs. The decrease in ALDH2 activity with DSF pretreatment was higher in HG group when compared to Ctrl group. Increased 4HNE adduct formation with DSF pretreatment was higher in HG group compared to Ctrl group. Pretreatment with DSF leads to potentiated HG-induced cell death in cultured H9C2 cardiomyocytes by lowering mitochondrial membrane potential. Our results indicate that ALDH2 activity is important in preventing high glucose induced cellular dysfunction.

  3. Aging, Loss-of-Coolant Accident (LOCA), and high potential testing of damaged cables

    International Nuclear Information System (INIS)

    Vigil, R.A.; Jacobus, M.J.

    1994-04-01

    Experiments were conducted to assess the effects of high potential testing of cables and to assess the survivability of aged and damaged cables under Loss-of-Coolant Accident (LOCA) conditions. High potential testing at 240 Vdc/mil on undamaged cables suggested that no damage was incurred on the selected virgin cables. During aging and LOCA testing, Okonite ethylene propylene rubber (EPR) cables with a bonded jacket experienced unexpected failures. The failures appear to be primarily related to the level of thermal aging and the presence of a bonded jacket that ages more rapidly than the insulation. For Brand Rex crosslinked polyolefin (XLPO) cables, the results suggest that 7 mils of insulation remaining should give the cables a high probability of surviving accident exposure following aging. The voltage necessary to detect when 7 mils of insulation remain on unaged Brand Rex cables is approximately 35 kVdc. This voltage level would almost certainly be unacceptable to a utility for use as a damage assessment tool. However, additional tests indicated that a 35 kvdc voltage application would not damage virgin Brand Rex cables when tested in water. Although two damaged Rockbestos silicone rubber cables also failed during the accident test, no correlation between failures and level of damage was apparent

  4. Metrics in academic profiles: a new addictive game for researchers?

    Science.gov (United States)

    Orduna-Malea, Enrique; Martín-Martín, Alberto Martín-Martín; Delgado López-Cózar, Emilio

    2016-09-22

    This study aims to promote reflection and bring attention to the potential adverse effects of academic social networks on science. These academic social networks, where authors can display their publications, have become new scientific communication channels, accelerating the dissemination of research results, facilitating data sharing, and strongly promoting scientific collaboration, all at no cost to the user.One of the features that make them extremely attractive to researchers is the possibility to browse through a wide variety of bibliometric indicators. Going beyond publication and citation counts, they also measure usage, participation in the platform, social connectivity, and scientific, academic and professional impact. Using these indicators they effectively create a digital image of researchers and their reputations.However, although academic social platforms are useful applications that can help improve scientific communication, they also hide a less positive side: they are highly addictive tools that might be abused. By gamifying scientific impact using techniques originally developed for videogames, these platforms may get users hooked on them, like addicted academics, transforming what should only be a means into an end in itself.

  5. Development of a predictive methodology for identifying high radon exhalation potential areas

    International Nuclear Information System (INIS)

    Ielsch, G.

    2001-01-01

    Radon 222 is a radioactive natural gas originating from the decay of radium 226 which itself originates from the decay of uranium 23 8 naturally present in rocks and soil. Inhalation of radon gas and its decay products is a potential health risk for man. Radon can accumulate in confined environments such as buildings, and is responsible for one third of the total radiological exposure of the general public to radiation. The problem of how to manage this risk then arises. The main difficulty encountered is due to the large variability of exposure to radon across the country. A prediction needs to be made of areas with the highest density of buildings with high radon levels. Exposure to radon varies depending on the degree of confinement of the habitat, the lifestyle of the occupants and particularly emission of radon from the surface of the soil on which the building is built. The purpose of this thesis is to elaborate a methodology for determining areas presenting a high potential for radon exhalation at the surface of the soil. The methodology adopted is based on quantification of radon exhalation at the surface, starting from a precise characterization of the main local geological and pedological parameters that control the radon source and its transport to the ground/atmosphere interface. The methodology proposed is innovative in that it combines a cartographic analysis, parameters integrated into a Geographic Information system, and a simplified model for vertical transport of radon by diffusion through pores in the soil. This methodology has been validated on two typical areas, in different geological contexts, and gives forecasts that generally agree with field observations. This makes it possible to identify areas with a high exhalation potential within a range of a few square kilometers. (author)

  6. RAGE-dependent potentiation of TRPV1 currents in sensory neurons exposed to high glucose.

    Science.gov (United States)

    Lam, Doris; Momeni, Zeinab; Theaker, Michael; Jagadeeshan, Santosh; Yamamoto, Yasuhiko; Ianowski, Juan P; Campanucci, Verónica A

    2018-01-01

    Diabetes mellitus is associated with sensory abnormalities, including exacerbated responses to painful (hyperalgesia) or non-painful (allodynia) stimuli. These abnormalities are symptoms of diabetic peripheral neuropathy (DPN), which is the most common complication that affects approximately 50% of diabetic patients. Yet, the underlying mechanisms linking hyperglycemia and symptoms of DPN remain poorly understood. The transient receptor potential vanilloid 1 (TRPV1) channel plays a central role in such sensory abnormalities and shows elevated expression levels in animal models of diabetes. Here, we investigated the function of TRPV1 channels in sensory neurons cultured from the dorsal root ganglion (DRG) of neonatal mice, under control (5mM) and high glucose (25mM) conditions. After maintaining DRG neurons in high glucose for 1 week, we observed a significant increase in capsaicin (CAP)-evoked currents and CAP-evoked depolarizations, independent of TRPV1 channel expression. These functional changes were largely dependent on the expression of the receptor for Advanced Glycation End-products (RAGE), calcium influx, cytoplasmic ROS accumulation, PKC, and Src kinase activity. Like cultured neurons from neonates, mature neurons from adult mice also displayed a similar potentiation of CAP-evoked currents in the high glucose condition. Taken together, our data demonstrate that under the diabetic condition, DRG neurons are directly affected by elevated levels of glucose, independent of vascular or glial signals, and dependent on RAGE expression. These early cellular and molecular changes to sensory neurons in vitro are potential mechanisms that might contribute to sensory abnormalities that can occur in the very early stages of diabetes.

  7. Ground potential rise on the high voltage substation during lightning strike measurement and simulation results

    Energy Technology Data Exchange (ETDEWEB)

    Wiater, Jaroslaw [Bialystok Technical University (Poland). Electrical Dept.], E-mail: jaroslawwiater@we.pb.edu.pl

    2007-07-01

    This paper will present a ground potential rise (GPR) measurement results. All measurements were made during normal work of the real high voltage substation and according a special procedure developed for this occasion. This procedure does not influence on the protection relays and ensures a proper work of the substation even for 6 kV surges. During measurements current and voltage surges were produced by the impulse generator - UCS 500M6B. Measurement results are compared to simulation results performed in CDEGS software for the same initial conditions. (author)

  8. Membrane potential and response properties of populations of cortical neurons in the high conductance state

    International Nuclear Information System (INIS)

    Moreno-Bote, Ruben; Parga, Nestor

    2005-01-01

    Because of intense synaptic activity, cortical neurons are in a high conductance state. We show that this state has important consequences on the properties of a population of independent model neurons with conductance-based synapses. Using an adiabaticlike approximation we study both the membrane potential and the firing probability distributions across the population. We find that the latter is bimodal in such a way that at any particular moment some neurons are inactive while others are active. The population rate and the response variability are also characterized

  9. ATR-FTIR as a potential tool for controlling high quality vinegar categories

    DEFF Research Database (Denmark)

    Ríos-Reina, Rocío; Callejón, Raquel M.; Oliver-Pozo, Celia

    2017-01-01

    potential as a rapid, cost-effective and non-destructive tool for characterizing different categories of high-quality vinegars. Spectra from 67 wine vinegars belonging to the PDOs “Vinagre de Jerez” and “Vinagre Condado de Huelva”, including their different established categories, were analyzed in the 4000......–600 cm−1 infrared region. Changes associated to categories were observed in the region 1800–900 cm−1. These changes were assigned to certain compounds that increase during aging (e.g. acetic acids, alcohols, esters) or are characteristic of Pedro Ximenez category (e.g. sugars, furfural). Principal...

  10. Rapid L2 Word Learning through High Constraint Sentence Context: An Event-Related Potential Study

    Directory of Open Access Journals (Sweden)

    Baoguo Chen

    2017-12-01

    Full Text Available Previous studies have found quantity of exposure, i.e., frequency of exposure (Horst et al., 1998; Webb, 2008; Pellicer-Sánchez and Schmitt, 2010, is important for second language (L2 contextual word learning. Besides this factor, context constraint and L2 proficiency level have also been found to affect contextual word learning (Pulido, 2003; Tekmen and Daloglu, 2006; Elgort et al., 2015; Ma et al., 2015. In the present study, we adopted the event-related potential (ERP technique and chose high constraint sentences as reading materials to further explore the effects of quantity of exposure and proficiency on L2 contextual word learning. Participants were Chinese learners of English with different English proficiency levels. For each novel word, there were four high constraint sentences with the critical word at the end of the sentence. Learners read sentences and made semantic relatedness judgment afterwards, with ERPs recorded. Results showed that in the high constraint condition where each pseudoword was embedded in four sentences with consistent meaning, N400 amplitude upon this pseudoword decreased significantly as learners read the first two sentences. High proficiency learners responded faster in the semantic relatedness judgment task. These results suggest that in high quality sentence contexts, L2 learners could rapidly acquire word meaning without multiple exposures, and L2 proficiency facilitated this learning process.

  11. ACADEMIC TRAINING

    CERN Multimedia

    Françoise Benz

    2002-01-01

    8, 9, 10, 11, 12 April LECTURE SERIES from 11.00 to 12.00 hrs - Auditorium, bldg. 500 Ultra-high vacuum technology for accelerators by N. Hilleret, CERN-LHC(1-2) - C. Benvenuti, CERN-EST(3) P. Strubin, CERN-LHC (4-5) The lectures will start with a review of the basics of vacuum physics required to build Ultra High Vacuum (UHV) systems, such as static and dynamic outgassing. Before reviewing the various pumping and measurement devices, including the most modern one like Non Evaporable Getter (NEG) coatings, an overview of adequate materials to be used in UHV systems will be given, together with their treatment (e.g. cleaning procedures and bake out). Practical examples based on existing or future accelerators will be used to illustrate the topics. Finally, a short overview of modern vacuum controls and interlocks will be given.

  12. Academic citizenship beyond the campus

    DEFF Research Database (Denmark)

    Nørgård, Rikke Toft; Bengtsen, Søren Smedegaard

    2016-01-01

    hrough combining theories of space and place with works on institutional being, virtues and modes of becoming, this article develops and promotes academic citizenship as the formation of dwelling, being and becoming on the placeful university beyond the campus. We argue that this is a prerequisite......-imagine the possibilities of the university to integrate with people and society through dialogue and placeful-ness. Accordingly, supporting academic citizenship entails designing for the placeful university – a university that invites and promotes openness, dialogue, democracy, mutual integration, care and joint...... responsibility. Consequently, a comprehension of the placeful university is developed in the article to make the potentiality of academic citizenship for the future university emerge....

  13. Exploring the relations among physical fitness, executive functioning, and low academic achievement.

    Science.gov (United States)

    de Bruijn, A G M; Hartman, E; Kostons, D; Visscher, C; Bosker, R J

    2018-03-01

    Physical fitness seems to be related to academic performance, at least when taking the role of executive functioning into account. This assumption is highly relevant for the vulnerable population of low academic achievers because their academic performance might benefit from enhanced physical fitness. The current study examined whether physical fitness and executive functioning are independent predictors of low mathematics and spelling achievement or whether the relation between physical fitness and low achievement is mediated by specific executive functions. In total, 477 students from second- and third-grade classes of 12 primary schools were classified as either low or average-to-high achievers in mathematics and spelling based on their scores on standardized achievement tests. Multilevel structural equation models were built with direct paths between physical fitness and academic achievement and added indirect paths via components of executive functioning: inhibition, verbal working memory, visuospatial working memory, and shifting. Physical fitness was only indirectly related to low achievement via specific executive functions, depending on the academic domain involved. Verbal working memory was a mediator between physical fitness and low achievement in both domains, whereas visuospatial working memory had a mediating role only in mathematics. Physical fitness interventions aiming to improve low academic achievement, thus, could potentially be successful. The mediating effect of executive functioning suggests that these improvements in academic achievement will be preceded by enhanced executive functions, either verbal working memory (in spelling) or both verbal and visuospatial working memory (in mathematics). Copyright © 2017 Elsevier Inc. All rights reserved.

  14. Impact of nutritional status at the onset of elementary school on academic aptitude test achievement at the end of high school in a multicausal approach.

    Science.gov (United States)

    Ivanovic, Daniza M; Rodríguez, María Del Pilar N; Pérez, Hernán T; Alvear, Jorge A; Almagià, Atilio F; Toro, Triana D; Urrutia, María Soledad C; Cruz, Arturo L; Ivanovic, Rodolfo M

    2009-07-01

    Like in many other countries, few investigations have been carried out in Chile to measure the long-term effects of nutritional status at an early age on scholastic achievement in a multicausal approach. The objectives of the present study were to describe the impact of nutritional, intellectual, family, educational and socio-economic variables at the onset of elementary school in 1987 that may affect achievement on the academic aptitude test (AAT) taken in 1998 at the end of high school, and to quantify the impact of these independent variables on the AAT. The present study comprises two cross-sectional stages: in 1987, a representative sample of 813 elementary school first-grader Chilean children from the Metropolitan Region was randomly chosen; in 1998, 12 years later, 632 school-age children were located and only 351 of them graduated from high school and, from these, 260 students took the AAT. In 1987 nutritional status was assessed through anthropometric parameters, intellectual ability by the Raven's Progressive Matrices Test, scholastic achievement through Spanish language and mathematics tests, and socio-economic status using Graffar's modified scale; family variables were also recorded. Maternal schooling, scholastic achievement, intellectual ability and head circumference-for-age z-score (anthropometric indicator of both nutritional background and brain development) all in 1987 were the independent variables with the greatest explanatory power for AAT variance in 1998 (r2 0.402). These results provide a foundation to identify the risk factors at an early age that affect AAT scores and should be useful to improve nutritional and educational policies.

  15. Potential for use of high-temperature superconductors in fusion reactors

    International Nuclear Information System (INIS)

    Hull, J.R.

    1991-01-01

    The present rate of development of high-temperature superconductors (HTSs) is sufficiently rapid that there may be opportunities for their use in contemporary fusion devices such as the International Thermonuclear Experimental Reactor (ITER). The most likely 1application is for delivering power to the superconducting magnets, especially in substituting for the current leads between the temperatures of 4 K and 77K. A second possible application of HTSs is as a liquid-nitrogen-cooled power bus, connecting the power supplies to the magnets, thus reducing the ohmic heating losses over these relatively long cables. A third potential application of HTSs is as an inner high-field winding of the toroidal field coils that would operate at ∼20 K. While the use of higher temperature magnets offers significant advantages to the reactor system, it is unlikely that tested conductors of this type will be available within the ITER time frame. 23 refs., 2 figs

  16. High resolution melting (HRM) analysis of DNA--its role and potential in food analysis.

    Science.gov (United States)

    Druml, Barbara; Cichna-Markl, Margit

    2014-09-01

    DNA based methods play an increasing role in food safety control and food adulteration detection. Recent papers show that high resolution melting (HRM) analysis is an interesting approach. It involves amplification of the target of interest in the presence of a saturation dye by the polymerase chain reaction (PCR) and subsequent melting of the amplicons by gradually increasing the temperature. Since the melting profile depends on the GC content, length, sequence and strand complementarity of the product, HRM analysis is highly suitable for the detection of single-base variants and small insertions or deletions. The review gives an introduction into HRM analysis, covers important aspects in the development of an HRM analysis method and describes how HRM data are analysed and interpreted. Then we discuss the potential of HRM analysis based methods in food analysis, i.e. for the identification of closely related species and cultivars and the identification of pathogenic microorganisms. Copyright © 2014 Elsevier Ltd. All rights reserved.

  17. Is the Modern High Potential Dairy Cow Suitable for Organic Farming Conditions?

    Directory of Open Access Journals (Sweden)

    Harðarson Grétar H

    2002-03-01

    Full Text Available It is not acceptable to compromise animal welfare in any system of farming. Feeding should be aimed at meeting the nutritional requirements at the various stages of production. This paper deals with the detrimental effects that organic, extensive or low input farming systems may have on the energy status in early lactation of the high potential dairy cow. Bovine ketosis is the most important disease resulting from insufficient energy intake in early lactation. It is also important to realize that ketosis is a part of the so-called periparturient disease complex, which includes milk fever, mastitis, retained placenta, endometritis and poor fertility also. All these diseases are interrelated and reflect to a large extent the nutritional status of the animal. If organic dairy farming is to be successful the breeding programmes have to divert from selection for high yields as a main goal, to more emphasis on a flatter lactation curve, less production diseases and longevity.

  18. Evaluation of the potentiality of the use of high-carbon microsilica as a pozzolanic material

    International Nuclear Information System (INIS)

    Ferreira, R.L.S.; Pederneiras, C.M.; Costa, T.C.S.; Silva, C.H.R.B.; Anjos, M.A.S.; Nobrega, A.K.

    2016-01-01

    Supplementary Cementitious Materials reduce the production of clinker, which minimizes the environmental impact of cement production and the generation of industrial waste, also improve mechanical behavior and durability. Thus, this article aims to evaluate the potential use of microsilica with high content of carbon as pozzolanic material, based on the requirements of ISO 12653 (ABNT, 2015). The techniques of X-ray fluorescence (XRF), X-ray diffraction (XRD) and compressive strength of mortar of lime and cement (at 7 and 28 days, respectively) were used to evaluate the pozzolanic of the microsilica as a mineral addition. The results indicated that the microsilica has a high amorphous silicon dioxide percentage structure. In the DRX could be possible to analyze the formation of CSH, justifying the good results of mechanical strength, especially with cement. Thus, the mineral admixture used in this research can be considered as a pozzolanic material. (author)

  19. Genomics approaches to unlock the high yield potential of cassava, a tropical model plant

    Directory of Open Access Journals (Sweden)

    Shengkui ZHANG,Ping'an MA,Haiyan WANG,Cheng LU,Xin CHEN,Zhiqiang XIA,Meiling ZOU,Xinchen ZHOU,Wenquan WANG

    2014-12-01

    Full Text Available Cassava, a tropical food, feed and biofuel crop, has great capacity for biomass accumulation and an extraordinary efficiency in water use and mineral nutrition, which makes it highly suitable as a model plant for tropical crops. However, the understanding of the metabolism and genomics of this important crop is limited. The recent breakthroughs in the genomics of cassava, including whole-genome sequencing and transcriptome analysis, as well as advances in the biology of photosynthesis, starch biosynthesis, adaptation to drought and high temperature, and resistance to virus and bacterial diseases, are reviewed here. Many of the new developments have come from comparative analyses between a wild ancestor and existing cultivars. Finally, the current challenges and future potential of cassava as a model plant are discussed.

  20. Circuit Model Simulations for Ionospheric Plasma Response to High Potential System

    Directory of Open Access Journals (Sweden)

    Hwang-Jae Rhee

    2000-06-01

    Full Text Available When a deployed probe is biased by a high positive potential during a space experiment, the payload is induced to a negative voltage in order to balance the total current in the whole system. The return currents are due to the responding ions and secondary electrons on the payload surface. In order to understand the current collection mechanism, the process was simulated with a combination of resistor, inductor, and capacitor in SPICE program which was equivalent to the background plasma sheath. The simulation results were compared with experimental results from SPEAR-3 (Space Power Experiment Aboard Rocket-3. The return current curve in the simulation was compatible to the experimental result, and the simulation helped to predict the transient plasma response to a high voltage during the plasma sheath formation.

  1. Are Australasian academic physicians an endangered species?

    Science.gov (United States)

    Wilson, A

    2007-11-01

    It has been stated that academic medicine is in a worldwide crisis. Is this decline in hospital academic practice a predictable consequence of modern clinical practice with its emphasis on community and outpatient-based services as well as a corporate health-care ethos or does it relate to innate problems in the training process and career structure for academic clinicians? A better understanding of the barriers to involvement in academic practice, including the effect of gender, the role and effect of overseas training, expectation of further research degrees and issues pertaining to the Australian academic workplace will facilitate recruitment and retention of the next generation of academic clinicians. Physician-scientists remain highly relevant as medical practice and education evolves in the 21st century. Hospital-based academics carry out a critical role in the ongoing mentoring of trainees and junior colleagues, whose training is still largely hospital based in most specialty programmes. Academic clinicians are uniquely placed to translate the rapid advances in medical biology into the clinical sphere, by guiding and carrying out translational research as well as leading clinical studies. Academic physicians also play key leadership in relations with government and industry, in professional groups and medical colleges. Thus, there is a strong case to assess the problems facing recruitment and retention of physician-scientists in academic practice and to develop workable solutions.

  2. High solids co-digestion of food and landscape waste and the potential for ammonia toxicity

    Energy Technology Data Exchange (ETDEWEB)

    Drennan, Margaret F.; DiStefano, Thomas D., E-mail: thomas.distefano@bucknell.edu

    2014-07-15

    Highlights: • We evaluated co-digestion of food and landscape waste with a pilot-scale anaerobic dry digester. • We evaluated reactor performance at 35 °C under low and high organic loading rates. • Performance was stable under low organic loading rate, but declined under high organic loading rate. • Respirometry was employed to investigate potential inhibition due to ammonia. • Landscape waste was unsuitable in increasing the C:N ratio during codigestion. - Abstract: A pilot-scale study was completed to determine the feasibility of high-solids anaerobic digestion (HSAD) of a mixture of food and landscape wastes at a university in central Pennsylvania (USA). HSAD was stable at low loadings (2 g COD/L-day), but developed inhibitory ammonia concentrations at high loadings (15 g COD/L-day). At low loadings, methane yields were 232 L CH{sub 4}/kg COD fed and 229 L CH{sub 4}/kg VS fed, and at high loadings yields were 211 L CH{sub 4}/kg COD fed and 272 L CH{sub 4}/kg VS fed. Based on characterization and biodegradability studies, food waste appears to be a good candidate for HSAD at low organic loading rates; however, the development of ammonia inhibition at high loading rates suggests that the C:N ratio is too low for use as a single substrate. The relatively low biodegradability of landscape waste as reported herein made it an unsuitable substrate to increase the C:N ratio. Codigestion of food waste with a substrate high in bioavailable carbon is recommended to increase the C:N ratio sufficiently to allow HSAD at loading rates of 15 g COD/L-day.

  3. THE POTENTIAL FOR NEUTRINO PHYSICS AT MUON COLLIDERS AND DEDICATED HIGH CURRENT MUON STORAGE RINGS

    International Nuclear Information System (INIS)

    BIGI, I.; BOLTON, T.; FORMAGGIO, J.; HARRIS, D.; MORFIN, J.; SPENTZOURIS, P.; YU, J.; KAYSER, B.; KING, B.J.; MCFARLAND, K.; PETROV, A.; SCHELLMAN, H.; VELASCO, M.; SHROCK, R.

    2000-01-01

    Conceptual design studies are underway for both muon colliders and high-current non-colliding muon storage rings that have the potential to become the first true neutrino factories. Muon decays in long straight sections of the storage rings would produce uniquely intense and precisely characterized two-component neutrino beams--muon neutrinos plus electron antineutrinos from negative muon decays and electron neutrinos plus muon antineutrinos from positive muons. This article presents a long-term overview of the prospects for these facilities to greatly extend the capabilities for accelerator-based neutrino physics studies for both high rate and long baseline neutrino experiments. As the first major physics topic, recent experimental results involving neutrino oscillations have motivated a vigorous design effort towards dedicated neutrino factories that would store muon beams of energies 50 GeV or below. These facilities hold the promise of neutrino oscillation experiments with baselines up to intercontinental distances and utilizing well understood beams that contain, for the first time, a substantial component of multi-GeV electron-flavored neutrinos. In deference to the active and fast-moving nature of neutrino oscillation studies, the discussion of long baseline physics at neutrino factories has been limited to a concise general overview of the relevant theory, detector technologies, beam properties, experimental goals and potential physics capabilities. The remainder of the article is devoted to the complementary high rate neutrino experiments that would study neutrino-nucleon and neutrino-electron scattering and would be performed at high performance detectors placed as close as is practical to the neutrino production straight section of muon storage rings in order to exploit beams with transverse dimensions as small as a few tens of centimeters

  4. THE POTENTIAL FOR NEUTRINO PHYSICS AT MUON COLLIDERS AND DEDICATED HIGH CURRENT MUON STORAGE RINGS

    Energy Technology Data Exchange (ETDEWEB)

    BIGI,I.; BOLTON,T.; FORMAGGIO,J.; HARRIS,D.; MORFIN,J.; SPENTZOURIS,P.; YU,J.; KAYSER,B.; KING,B.J.; MCFARLAND,K.; PETROV,A.; SCHELLMAN,H.; VELASCO,M.; SHROCK,R.

    2000-05-11

    Conceptual design studies are underway for both muon colliders and high-current non-colliding muon storage rings that have the potential to become the first true neutrino factories. Muon decays in long straight sections of the storage rings would produce uniquely intense and precisely characterized two-component neutrino beams--muon neutrinos plus electron antineutrinos from negative muon decays and electron neutrinos plus muon antineutrinos from positive muons. This article presents a long-term overview of the prospects for these facilities to greatly extend the capabilities for accelerator-based neutrino physics studies for both high rate and long baseline neutrino experiments. As the first major physics topic, recent experimental results involving neutrino oscillations have motivated a vigorous design effort towards dedicated neutrino factories that would store muon beams of energies 50 GeV or below. These facilities hold the promise of neutrino oscillation experiments with baselines up to intercontinental distances and utilizing well understood beams that contain, for the first time, a substantial component of multi-GeV electron-flavored neutrinos. In deference to the active and fast-moving nature of neutrino oscillation studies, the discussion of long baseline physics at neutrino factories has been limited to a concise general overview of the relevant theory, detector technologies, beam properties, experimental goals and potential physics capabilities. The remainder of the article is devoted to the complementary high rate neutrino experiments that would study neutrino-nucleon and neutrino-electron scattering and would be performed at high performance detectors placed as close as is practical to the neutrino production straight section of muon storage rings in order to exploit beams with transverse dimensions as small as a few tens of centimeters.

  5. Reticular Chemistry for the Highly Connected Porous Crystalline Frameworks and Their Potential Applications

    KAUST Repository

    Chen, Zhijie

    2018-03-31

    Control at the molecular level over porous solid-state materials is of prime importance for fine-tuning the local structures, as well as the resultant properties. Traditional porous solid-state materials such as zeolite and activated carbon are the benchmarks in the current market with vital applications in sorption and heterogeneous catalysis. However, the adjustments of pore size and geometry of those materials, which are essential for the broader aspect of modern prominent applications, remain challenging. Reticular chemistry has emerged as a dominant tool toward the ‘designed syntheses’ of porous crystalline frameworks (e.g. metal-organic frameworks (MOFs)) with a specific pore system. This dissertation illustrates the power of reticular chemistry and its use in the directional assembly of highly coordinated MOF materials, as well as their potential applications such as gas storage, natural gas upgrading, and light hydrocarbon separation. Highly connected minimal edge-transitive derived and related nets, obtained via the deconstruction of nodes of the edge-transitive nets, are suitable blueprints and can potentially be deployed in the future ‘designed syntheses’ of MOFs. The further employment of the conceptual net-coded building units (e.g. highly connected MBBs and edge-transitive SBLs) in the practical reticular synthesis results in the rational design and construction of functional MOF platforms like shp-, alb-, kce-, kex- and eea- MOFs. In addition, the isoreticular synthesis of Al-cea-MOF-2 with functionalized pendant acid moieties inside pore channels in comparison to the parent Al-cea-MOF-1 led to enhanced light hydrocarbons separation performance. Moreover, controlling the molecular defects in Zr-fum-fcu-MOFs resulted in the development of an ultramicroporous adsorbent with an engineered aperture size for the highly efficient separation of butane/iso-butane.

  6. Lipid metabolism and potentials of biofuel and high added-value oil production in red algae.

    Science.gov (United States)

    Sato, Naoki; Moriyama, Takashi; Mori, Natsumi; Toyoshima, Masakazu

    2017-04-01

    Biomass production is currently explored in microalgae, macroalgae and land plants. Microalgal biofuel development has been performed mostly in green algae. In the Japanese tradition, macrophytic red algae such as Pyropia yezoensis and Gelidium crinale have been utilized as food and industrial materials. Researches on the utilization of unicellular red microalgae such as Cyanidioschyzon merolae and Porphyridium purpureum started only quite recently. Red algae have relatively large plastid genomes harboring more than 200 protein-coding genes that support the biosynthetic capacity of the plastid. Engineering the plastid genome is a unique potential of red microalgae. In addition, large-scale growth facilities of P. purpureum have been developed for industrial production of biofuels. C. merolae has been studied as a model alga for cell and molecular biological analyses with its completely determined genomes and transformation techniques. Its acidic and warm habitat makes it easy to grow this alga axenically in large scales. Its potential as a biofuel producer is recently documented under nitrogen-limited conditions. Metabolic pathways of the accumulation of starch and triacylglycerol and the enzymes involved therein are being elucidated. Engineering these regulatory mechanisms will open a possibility of exploiting the full capability of production of biofuel and high added-value oil. In the present review, we will describe the characteristics and potential of these algae as biotechnological seeds.

  7. Persea schiedeana: A High Oil “Cinderella Species” Fruit with Potential for Tropical Agroforestry Systems

    Directory of Open Access Journals (Sweden)

    Jay Bost

    2013-12-01

    Full Text Available Persea schiedeana, a close relative of avocado (Persea americana, is an important part of agroforestry systems and diets in parts of Mesoamerica, particularly in the coffee growing areas of southeastern Mexico and Guatemala, where it is known as chinene, coyo, and yas. Little research attention has been given to this species, other than as a rootstock for avocado. Research carried out in six villages composing the Comité de Recursos Naturales de la Chinantla Alta (CORENCHI in Oaxaca, Mexico shows that Persea schiedeana has potential as a supplement to avocado production in subsistence systems and as a potential oil crop in more market oriented agroforestry systems. This survey of Persea schiedeana in the Chinantla area reports on the ethnoecology and management of chinene, as well as on the morphological diversity of the fruit in the area. High morphological diversity for fruit characters was noted and it is suggested that artificial selection has occurred and been modestly successful for desired fruit characters. Superior fruiting trees, identified during village level “chinene fairs” were targeted for vegetative propagation as part of a participatory domestication project. Such superior genotypes hold potential for addressing food security and creating marketable products in tropical areas around the globe.

  8. A high-resolution assessment of wind and wave energy potentials in the Red Sea

    KAUST Repository

    Langodan, Sabique

    2016-08-24

    This study presents an assessment of the potential for harvesting wind and wave energy from the Red Sea based on an 18-year high-resolution regional atmospheric reanalysis recently generated using the Advanced Weather Research Forecasting model. This model was initialized with ERA-Interim global data and the Red Sea reanalysis was generated using a cyclic three-dimensional variational approach assimilating available data in the region. The wave hindcast was generated using WAVEWATCH III on a 5 km resolution grid, forced by the Red Sea reanalysis surface winds. The wind and wave products were validated against data from buoys, scatterometers and altimeters. Our analysis suggests that the distribution of wind and wave energy in the Red Sea is inhomogeneous and is concentrated in specific areas, characterized by various meteorological conditions including weather fronts, mesoscale vortices, land and sea breezes and mountain jets. A detailed analysis of wind and wave energy variation was performed at three hotspots representing the northern, central and southern parts of the Red Sea. Although there are potential sites for harvesting wind energy from the Red Sea, there are no potential sites for harvesting wave energy because wave energy in the Red Sea is not strong enough for currently available wave energy converters. Wave energy should not be completely ignored, however, at least from the perspective of hybrid wind-wave projects. (C) 2016 Elsevier Ltd. All rights reserved.

  9. ACADEMIC TRAINING

    CERN Multimedia

    Françoise Benz

    2002-01-01

    18, 19, 20, 21, 22 February LECTURE SERIES from 11.00 to 12.00 hrs , Auditorium, Bldg 500 POSTPONED! - Particle Identification at the LHC - POSTPONED! by P. Eerola / Lund University, SE The LHC experiments will explore new frontiers of particle physics. To maximize the physics potential of LHC, we need identification of leptons, hadrons, photons and 'invisible' particles. This is realized through reconstruction of electrons and muons, charged particle tracking and identification, b- and tau-tagging, and jet reconstruction. In addition, missing energy has to be measured in order to look for signatures of invisible particles. The experimental conditions posed by the collider, which will be operating at higher energy and luminosity than the present ones, are demanding. A large dynamical range is required in order to measure energies and momenta ranging from below one GeV to several TeVs. The detectors should be able to cope with the 40 MHz collision rate, with a large number of overlapping events. Limited availa...

  10. Nocebo and the potential harm of 'high risk' labelling: a scoping review.

    Science.gov (United States)

    Symon, Andrew; Williams, Brian; Adelasoye, Qadir A; Cheyne, Helen

    2015-07-01

    A discussion of the existence, prevalence and characteristics of the nocebo effect in health care. There is increasing but inconsistent evidence for nocebo effects (the opposite of placebo). Causal mechanisms are believed to be similar to placebo (negative effects result from suggestions of negative clinical outcomes). Risk screening in health care may produce this unintended effect through labelling some patients as high risk. Given health care's almost universal coverage this potentially affects many people. Discussion paper following a scoping review of the existence and frequency of nocebo. Literature databases (PsycINFO, MEDLINE, CCTR, CINAHL and EMBASE) searched from inception dates to 2013. Significant empirical evidence indicates that negative beliefs may impact on health outcomes (incidence estimates range from 3-27%). The nocebo effect, rooted in the complex interplay between physiological functioning and social factors, appears significantly more common among women and where prior negative knowledge or expectations exist. Pre-existing psychological characteristics (anxiety, neuroses, panic disorder or pessimism) exacerbate it. While the placebo effect is well documented, there has been no systematic attempt to synthesize primary empirical research on the role of nocebo. It is possible that nocebo outcomes may be preventable through careful consideration of information provision and the prior identification of potentially high risk individuals. This paper summarizes the scale and importance of the nocebo effect, its distribution according to a range of social and clinical variables and its known relation to psychological precursors. It identifies important gaps in the research literature. © 2015 John Wiley & Sons Ltd.

  11. Treatability of a Highly-Impaired, Saline Surface Water for Potential Urban Water Use

    Directory of Open Access Journals (Sweden)

    Frederick Pontius

    2018-03-01

    Full Text Available As freshwater sources of drinking water become limited, cities and urban areas must consider higher-salinity waters as potential sources of drinking water. The Salton Sea in the Imperial Valley of California has a very high salinity (43 ppt, total dissolved solids (70,000 mg/L, and color (1440 CU. Future wetlands and habitat restoration will have significant ecological benefits, but salinity levels will remain elevated. High salinity eutrophic waters, such as the Salton Sea, are difficult to treat, yet more desirable sources of drinking water are limited. The treatability of Salton Sea water for potential urban water use was evaluated here. Coagulation-sedimentation using aluminum chlorohydrate, ferric chloride, and alum proved to be relatively ineffective for lowering turbidity, with no clear optimum dose for any of the coagulants tested. Alum was most effective for color removal (28 percent at a dose of 40 mg/L. Turbidity was removed effectively with 0.45 μm and 0.1 μm microfiltration. Bench tests of Salton Sea water using sea water reverse osmosis (SWRO achieved initial contaminant rejections of 99 percent salinity, 97.7 percent conductivity, 98.6 percent total dissolved solids, 98.7 percent chloride, 65 percent sulfate, and 99.3 percent turbidity.

  12. Geohydrology surrounding a potential high-level nuclear waste repository in the Paradox Basin, Utah

    International Nuclear Information System (INIS)

    Brandstetter, A.; Kroitoru, L.; Andrews, R.W.; Thackston, J.W.

    1984-01-01

    The Gibson Dome area in the Paradox Basin in southeastern Utah has been identified as a potential location for a high-level nuclear waste repository on the basis of an adequate thickness of bedded salt formations at desirable depths, suitable topography for surface facilities, few known archaeological sites, less resource potential than otherwise similar areas, and long-term geologic and tectonic stability. The area appears also suitable from a geohydrologic viewpoint, on the basis of data collected and analyses performed to date. The upper, near-surface, geologic formations include both regionally continuous water-bearing formations and locally perched ground waters that discharge into nearby surface streams and into the Colorado River. Below the Paradox salts, the formations of interest with respect to repository safety include regionally continuous water-bearing formations, with the Leadville limestone being the principal water-transmitting unit. Flows in all water-bearing formations are essentially horizontal. If a vertical connection were established through a potential repository, hydraulic gradients indicate that the flow would first be downward from the upper to the lower formations and then laterally, principally in the Leadville formation. There are some indications that minor leakage could occur into the Colorado River as close as Cataract Canyon, about 20 to 25 km (10 to 15 miles) from a potential repository location in Davis Canyon, or into the Colorado River in Marble Canyon (Arizona), about 240 km (150 miles) to the southwest. Groundwater flow from a repository to these locations is unlikely, however, since water would first have to penetrate the essentially impermeable salt layers before it would reach the Leadville formation. 11 references, 4 figures

  13. Potential Sources of High Frequency and Biphonic Vocalization in the Dhole (Cuon alpinus.

    Directory of Open Access Journals (Sweden)

    Roland Frey

    Full Text Available Biphonation, i.e. two independent fundamental frequencies in a call spectrum, is a prominent feature of vocal activity in dog-like canids. Dog-like canids can produce a low (f0 and a high (g0 fundamental frequency simultaneously. In contrast, fox-like canids are only capable of producing the low fundamental frequency (f0. Using a comparative anatomical approach for revealing macroscopic structures potentially responsible for canid biphonation, we investigated the vocal anatomy for 4 (1 male, 3 female captive dholes (Cuon alpinus and for 2 (1 male, 1 female wild red fox (Vulpes vulpes. In addition, we analyzed the acoustic structure of vocalizations in the same dholes that served postmortem as specimens for the anatomical investigation. All study dholes produced both high-frequency and biphonic calls. The anatomical reconstructions revealed that the vocal morphologies of the dhole are very similar to those of the red fox. These results suggest that the high-frequency and biphonic calls in dog-like canids can be produced without specific anatomical adaptations of the sound-producing structures. We discuss possible production modes for the high-frequency and biphonic calls involving laryngeal and nasal structures.

  14. ACADEMIC TRAINING

    CERN Multimedia

    Françoise Benz

    2002-01-01

    18, 19, 20, 21, 22 March LECTURE SERIES from 11.00 to 12.00 hrs - Main Auditorium, bldg. 500 Escaping in Extra Dimensions by J. D. March-Russell/ CERN-TH Recent progress in the formulation of fundamental theories for a Universe with more than 4 dimensions will be reviewed. Particular emphasis will be given to theories predicting the existence of extra dimensions at distance scales within the reach of current or forthcoming experiments. The phenomenological implications of these theories, ranging from detectable deviations from Newton's law at sub-millimeter scales, to phenomena of cosmological and astrophysical interest, as well as to high-energy laboratory experiments, will be discussed.

  15. Academic Entitlement and Academic Performance in Graduating Pharmacy Students

    OpenAIRE

    Jeffres, Meghan N.; Barclay, Sean M.; Stolte, Scott K.

    2014-01-01

    Objectives. To determine a measurable definition of academic entitlement, measure academic entitlement in graduating doctor of pharmacy (PharmD) students, and compare the academic performance between students identified as more or less academically entitled.

  16. Commercializing Academic Research

    DEFF Research Database (Denmark)

    Czarnitzki, Dirk; Hussinger, Katrin; Schneider, Cédric

    2011-01-01

    the importance of academic patenting. Our findings suggest that academic involvement in patenting results in a citation premium, as academic patents appear to generate more forward citations. We also find that in the European context of changing research objectives and funding sources since the mid-1990s...

  17. The Academic Adviser

    Science.gov (United States)

    Darling, Ruth

    2015-01-01

    In this essay, I explore the idea that "academic" advisers are "academics" who play a major role in connecting the general education curriculum to the students' experience as well as connecting the faculty to the students' holistic experience of the curriculum. The National Academic Advising Association Concept of Academic…

  18. A New Model and Its Implementation of Academic Resources Services for Academic Libraries

    Directory of Open Access Journals (Sweden)

    Yu-Ting Chiang

    2006-12-01

    Full Text Available Internet has become one of the important channels for retrieval of academic resources in the recent years. The roles and service models of academic libraries has been changed accordingly. Most academic libraries have been providing subject directory (subject gateway for users to browse the highly selected academic resources. On the contrary, few academic libraries managed to provide academic resources for user to retrieve. This article proposes a new model which the libraries will cooperate with search engine providers to support the full-text retrieval for academic resources in a low cost. We discuss the design and implementation of “NTU Scholars Gateway” based on the new model. In addition, the functionalities and future development of NTU Scholars Gateway are discussedas well. [Article content in Chinese

  19. Competência social e práticas educativas parentais em adolescentes com alto e baixo rendimento acadêmico Social competence and parental practices in adolescents with high and low academic achievement

    Directory of Open Access Journals (Sweden)

    Graziela Sapienza

    2009-01-01

    Full Text Available Este trabalho investigou as relações entre competência social, práticas educativas parentais e rendimento acadêmico em adolescentes. Participaram deste estudo 66 adolescentes divididos em dois grupos: alto e baixo rendimento acadêmico. Os instrumentos utilizados foram o CBCL e o YSR (Achenbach, 1991 e o IEP (Gomide, 2006. Os resultados mostraram que adolescentes de alto rendimento acadêmico são percebidos pelos pais como socialmente competentes e são criados com mais práticas educativas parentais positivas. Esses dados indicam que o rendimento acadêmico também é influenciado pela competência social e pelo modo como os adolescentes são educados pelos pais. Esses aspectos devem ser considerados em intervenções que pretendem promover a melhoria do rendimento acadêmico e o desenvolvimento de comportamentos ajustados ao contexto escolar.This paper investigated the relations between social competence, parental practices and academic performance in adolescents. 66 adolescents took part in the study and they were divided in two groups: high and low academic performance. The tools used in this research were CBCL and YSR (Achenbach, 1991, and IEP (Gomide, 2006. The results showed that adolescents of high academic achievements are perceived by the parents as socially competent and are raised with more positive parental practices. The data indicated that academic performance is also influenced by the social competence and the way the adolescents are educated by the parents. Those aspects should be considered in interventions that aim at promoting the improvement of academic performance and development of a behavior adjusted to the school.

  20. Academic Integrity: Information Systems Education Perspective

    Science.gov (United States)

    McHaney, Roger; Cronan, Timothy Paul; Douglas, David E.

    2016-01-01

    Academic integrity receives a great deal of attention in institutions of higher education. Universities and colleges provide specific honor codes or have administrative units to promote good behaviors and resolve dishonesty allegations. Students, faculty, and staff have stakes in maintaining high levels of academic integrity to ensure their…