WorldWideScience

Sample records for high academic potential

  1. Tapping Academic Potential.

    Science.gov (United States)

    McLamb, L. W.; Lant, Marsha

    1988-01-01

    Twelve low-achieving, high-potential junior high students were involved in a pullout program to improve their academic performance. The students were partially successful in applying strategies they learned for analyzing their potential, building self-esteem, managing time, managing stress, goal setting, and developing individual action plans.…

  2. Intellectual and non-intellectual determinants of high academic achievement – the contribution of personality traits to the assessment of high performance potential

    Directory of Open Access Journals (Sweden)

    Silvia Schubhart

    2013-09-01

    Full Text Available In this paper a study is presented which tries to explain and predict high academic achievement in children or adolescents on the basis of intellectual and non-intellectual determinants – in this case, performance relevant personality traits as well as the social environment of stimulation. The prognosis of high academic achievement is based on a new diagnostic model, the Viennese Diagnostic Model of High Achievement Potential, which undergoes its first empirical validation here. The results show impressive evidence that performance-relevant personality traits and categories of social environment of stimulation contribute to high academic achievement in children and adolescents of above-average intelligence.

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

    African Journals Online (AJOL)

    Maximising the potential of social media to deliver academic library services to ... that academic libraries in Kenya are currently using Facebook, WhatsApp, ... The Technical University of Kenya library, social media, social media marketing ...

  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. Potential causal relationship between depressive symptoms and academic achievement in the Hawaiian high schools health survey using contemporary longitudinal latent variable change models.

    Science.gov (United States)

    Hishinuma, Earl S; Chang, Janice Y; McArdle, John J; Hamagami, Fumiaki

    2012-09-01

    There is a relatively consistent negative relationship between adolescent depressive symptoms and educational achievement (e.g., grade point average [GPA]). However, the causal direction for this association is less certain due to the lack of longitudinal data with both indicators measured across at least 2 time periods and due to the lack of application of more sophisticated contemporary statistical techniques. We present multivariate results from a large longitudinal cohort-sequential study of high school students (N = 7,317) with measures of self-reported depressive symptoms and self-reported GPAs across multiple time points (following McArdle, 2009, and McArdle, Johnson, Hishinuma, Miyamoto, & Andrade, 2001) using an ethnically diverse sample from Hawai'i. Contemporary statistical techniques included bivariate dynamic structural equation modeling (DSEM), multigroup ethnic and gender DSEMs, ordinal scale measurement of key outcomes, and imputation for incomplete longitudinal data. The findings suggest that depressive symptoms affect subsequent academic achievement and not the other way around, especially for Native Hawaiians compared with female non-Hawaiians. We further discuss the scientific, applied, and methodological-statistical implications of the results, including the need for further theorizing and research on mediating variables. We also discuss the need for increased prevention, early intervention, screening, identification, and treatment of depressive symptoms and disorders. Finally, we argue for utilization of more contemporary methodological-statistical techniques, especially when violating parametric test assumptions.

  6. 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.

  7. 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…

  8. Research into development potentialities of academic entrepreneurship in Poland

    Directory of Open Access Journals (Sweden)

    Aneta Sokol

    2010-10-01

    Full Text Available The issue of academic entrepreneurship is becoming a more and more fashionable topic which functions on the research and business cooperation plane at the institutional level and business incubators supporting private ventures of students and research personnel. The interactions of universities with economy, business use of research projects results as well as the transfer of innovations and technologies are becoming the basis for the government’s strategy at the central, local, university management level and the object of activities for numerous organizations. Considering this context, the article discusses development potentialities of academic entrepreneurship in Poland.

  9. 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…

  10. 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…

  11. The "Secrets" of Chinese Students' Academic Success: Academic Resilience among Students from Highly Competitive Academic Environments

    Science.gov (United States)

    Li, Haibin

    2017-01-01

    Given Chinese students often perform well academically despite the challenges of their competitive academic environments, it is important to explore what enables the academic resilience of these students. Moreover, because the extant resilience literature is biased towards Western accounts of resilience, it is crucial that non-Western perspectives…

  12. Multidimensional Scaling of High School Students' Perceptions of Academic Dishonesty

    Science.gov (United States)

    Schmelkin, Liora Pedhazur; Gilbert, Kimberly A.; Silva, Rebecca

    2010-01-01

    Although cheating on tests and other forms of academic dishonesty are considered rampant, no standard definition of academic dishonesty exists. The current study was conducted to investigate the perceptions of academic dishonesty in high school students, utilizing an innovative methodology, multidimensional scaling (MDS). Two methods were used to…

  13. Multidimensional Scaling of High School Students' Perceptions of Academic Dishonesty

    Science.gov (United States)

    Schmelkin, Liora Pedhazur; Gilbert, Kimberly A.; Silva, Rebecca

    2010-01-01

    Although cheating on tests and other forms of academic dishonesty are considered rampant, no standard definition of academic dishonesty exists. The current study was conducted to investigate the perceptions of academic dishonesty in high school students, utilizing an innovative methodology, multidimensional scaling (MDS). Two methods were used to…

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

    Science.gov (United States)

    Rascoe, Barbara Jean

    The purpose of this study was to examine gifted Black males' self-perceptions of academic ability and gifted potential in science. Major concerns were to determine how these self-perceptions of academic ability and gifted potential influenced gifted Black males' capacity to compete in advanced science classes and to determine how science teachers may have influenced participants' self-perceptions of academic ability and gifted potential. This study required an approach that would allow an interpretive aspect for the experiences of gifted Black males in advanced science classes. An intrinsic qualitative case study design with a critical theory framework was used. Data were collected using semi-structured interviews, which were audiotaped and transcribed. Each participant was interviewed twice and each interview averaged 45 minutes. The purposeful sample consisted of nine gifted high school Black males between the ages of fourteen and eighteen. The constant comparative method was used to analyze the data. The categories of gifted Black males' self-perceptions of academic ability and gifted potential included gifted high achievers, gifted 'could do better' high achievers, gifted 'could do better' situational nonachievers, and gifted 'could do better' underachievers. Gifted Black male participants' perceptions regarding their science teachers' influence on their self-perceptions of academic ability and gifted potential included validation, reinforcement, and enhancement. These participants' perceptions regarding how science teachers' influenced their academic performance in science included science teachers' content knowledge, science teachers' skills to make science challenging and engaging, and a safe learning environment. The conclusions of this study described competing power dynamics of science teachers and gifted Black males' interactions in the science learning environment. The discussion also included a summary of relationships among the emergent themes

  15. Spread of Academic Success in a High School Social Network

    Science.gov (United States)

    Blansky, Deanna; Kavanaugh, Christina; Boothroyd, Cara; Benson, Brianna; Gallagher, Julie; Endress, John; Sayama, Hiroki

    2013-01-01

    Application of social network analysis to education has revealed how social network positions of K-12 students correlate with their behavior and academic achievements. However, no study has been conducted on how their social network influences their academic progress over time. Here we investigated correlations between high school students’ academic progress over one year and the social environment that surrounds them in their friendship network. We found that students whose friends’ average GPA (Grade Point Average) was greater (or less) than their own had a higher tendency toward increasing (or decreasing) their academic ranking over time, indicating social contagion of academic success taking place in their social network. PMID:23418483

  16. Spread of academic success in a high school social network.

    Directory of Open Access Journals (Sweden)

    Deanna Blansky

    Full Text Available Application of social network analysis to education has revealed how social network positions of K-12 students correlate with their behavior and academic achievements. However, no study has been conducted on how their social network influences their academic progress over time. Here we investigated correlations between high school students' academic progress over one year and the social environment that surrounds them in their friendship network. We found that students whose friends' average GPA (Grade Point Average was greater (or less than their own had a higher tendency toward increasing (or decreasing their academic ranking over time, indicating social contagion of academic success taking place in their social network.

  17. Academic dishonesty among high school students.

    Science.gov (United States)

    McCabe, D L

    1999-01-01

    Research on academic dishonesty has generally relied on survey techniques, which may fail to capture students' true feelings about cheating. The present investigation used focus group discussions to gain a fuller understanding of students' beliefs about academic dishonesty. The results suggest that, in regard to their cheating, students generally place the blame on others.

  18. The Role of Academic Burnout, Resilience, and Perceived Stress in Predicting Students\\\\\\' Addiction Potential

    Directory of Open Access Journals (Sweden)

    mojtaba salmabadi

    2015-06-01

    Full Text Available Objective: This study aimed at determining the role of academic burnout, resilience, and perceived stress in predicting students' addiction potential. Method: In this correlational study, the number of 200 high school students in of South Khorasan province was selected as the participants through random cluster sampling and they responded to the three pertinent questionnaires, namely resilience scale, academic burnout scale, perceived stress scale, and addiction potential scale. Results: The results showed that academic burnout, perceived stress, and resilience were positively correlated with addiction potential. Similarly, there was a significant positive relationship between academic burnout and perceived stress. Conclusion: Dimensions of burnout (emotional exhaustion, apathy, impotency, dimensions of perceived stress (negative emotional responses and coping ability level, and resilience could predict 20% of addiction potential. Among these dimensions, only coping ability level and resilience were significantly effective in predicting addiction potential therefore, educational authorities are recommended to pay more attention to the prevention and treatment of addiction in students towards having a healthy society.

  19. 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.

  20. Academic Dishonesty among Gifted and High-Achieving Students

    Science.gov (United States)

    Geddes, Kimberly A.

    2011-01-01

    Gifted high school students are essentially absent in the research concerning academic integrity; however, over the past few years, educators of gifted students have noticed an increase in the occurrences of academic dishonesty among students in gifted classrooms (Abilock, 2009). This research may be analyzed to provide some insight into the…

  1. Academic Dishonesty among Gifted and High-Achieving Students

    Science.gov (United States)

    Geddes, Kimberly A.

    2011-01-01

    Gifted high school students are essentially absent in the research concerning academic integrity; however, over the past few years, educators of gifted students have noticed an increase in the occurrences of academic dishonesty among students in gifted classrooms (Abilock, 2009). This research may be analyzed to provide some insight into the…

  2. Does High School Homework Increase Academic Achievement?

    Science.gov (United States)

    Kalenkoski, Charlene Marie; Pabilonia, Sabrina Wulff

    2017-01-01

    Although previous research has shown that homework improves students' academic achievement, the majority of these studies use data on students' homework time from retrospective questionnaires, which may be less accurate than time-diary data. We use data from the combined Child Development Supplement (CDS) and the Transition to Adulthood Survey…

  3. 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.

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

    OpenAIRE

    Cándido J. Inglés; Agustin E. Martínez-González; Antonio Valle; José M. García-Fernández; Cecilia Ruiz-Esteban

    2011-01-01

    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...

  5. High School Employment and Academic Achievement: A Note for Educators

    Science.gov (United States)

    Keister, Mary; Hall, Joshua

    2010-01-01

    Educators are often in a position to affect student decisions to work during the school term. This study reviews and summarizes the literature on the effect that employment during high school has on academic achievement. The available evidence suggests that part-time jobs for high school students are beneficial as long as the number of hours…

  6. 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…

  7. 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…

  8. 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…

  9. A Phenomenological Exploration of Teacher Training Regarding Academically Advanced/High-Ability Students

    Science.gov (United States)

    Sueker, Carrie Olstad

    2011-01-01

    The needs of academically advanced/high-ability students may not be met in today's schools. When educational needs are not met, students may not reach full potential, may lose intrinsic motivation for learning, and may develop poor work and study habits. The rural school district involved in this study lacks a formal gifted and talented program.…

  10. High School Concussions in the 2008–2009 Academic Year

    Science.gov (United States)

    Meehan, William P.; d’Hemecourt, Pierre; Comstock, R. Dawn

    2011-01-01

    Background An estimated 136 000 concussions occur per academic year in high schools alone. The effects of repetitive concussions and the potential for catastrophic injury have made concussion an injury of significant concern for young athletes. Purpose The objective of this study was to describe the mechanism of injury, symptoms, and management of sport-related concussions using the High School Reporting Information Online (HS RIO) surveillance system. Study Design Descriptive epidemiology study. Methods All concussions recorded by HS RIO during the 2008–2009 academic year were included. Analyses were performed using SPSS software. Chi-square analysis was performed for all categorical variables. Statistical significance was considered for P concussions were recorded. The most common mechanism (76.2%) was contact with another player, usually a head-to-head collision (52.7%). Headache was experienced in 93.4%; 4.6% lost consciousness. Most (83.4%) had resolution of their symptoms within 1 week. Symptoms lasted longer than 1 month in 1.5%. Computerized neuropsychological testing was used in 25.7% of concussions. When neuropsychological testing was used, athletes were less likely to return to play within 1 week than those for whom it was not used (13.6% vs 32.9%; P < .01). Athletes who had neuropsychological testing appeared less likely to return to play on the same day (0.8% vs 4.2%; P = .056). A greater proportion of injured, nonfootball athletes had computerized neuropsychological testing than injured football players (23% vs 32%; P = .02) Conclusion When computerized neuropsychological testing is used, high school athletes are less likely to be returned to play within 1 week of their injury. Concussed football players are less likely to have computerized neuropsychological testing than those participating in other sports. Loss of consciousness is relatively uncommon among high school athletes who sustain a sport-related concussion. The most common mechanism is

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

    Directory of Open Access Journals (Sweden)

    Fijri Auliyanti

    2015-01-01

    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 after-hours education program (more than 2 types, the average IQ level, and male gender. [Paediatr Indones. 2015;55:50-8.].

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

    Directory of Open Access Journals (Sweden)

    Fijri Auliyanti

    2016-07-01

    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.

  13. 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…

  14. 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…

  15. The potential for using gamification in academic libraries in order to increase student engagement and achievement

    OpenAIRE

    Walsh, Andrew

    2014-01-01

    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 libra...

  16. Corpus of High School Academic Texts (COHAT): Data-Driven, Computer Assisted Discovery in Learning Academic English

    Science.gov (United States)

    Bohát, Róbert; Rödlingová, Beata; Horáková, Nina

    2015-01-01

    Corpus of High School Academic Texts (COHAT), currently of 150,000+ words, aims to make academic language instruction a more data-driven and student-centered discovery learning as a special type of Computer-Assisted Language Learning (CALL), emphasizing students' critical thinking and metacognition. Since 2013, high school English as an additional…

  17. 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 

  18. Relating emotional intelligence to social competence and academic achievement in high school students.

    Science.gov (United States)

    Gil-Olarte Márquez, Paloma; Palomera Martín, Raquel; Brackett, Marc A

    2006-01-01

    This study investigated the discriminant, criterion and incremental validity of an ability measure of Emotional Intelligence (EI). High school students (N = 77) took the Mayer-Salovey-Caruso Emotional Intelligence Test - Spanish Version (MSCEIT V. 2.0, 2002), a measure of Big Five personality traits (BFQ; Caprara, Barbanelli, & Borgogni , 1993), an General Intelligence test (IGF-r 5; Yuste, 2002), and a social competence inventory (AECS; Moraleda, González, & García-Gallo, 1998). Students' academic grades also were obtained from official school records at the end of the school year. As predicted, the MSCEIT was discriminable from well-established measures of personality and intelligence. The test was also moderately related to social competence and predicted students' final grades. Most of the findings remained significant after personality and academic intelligence were statistically controlled. The potential utility of EI in the context of academic institutions is discussed.

  19. 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.

  20. Academic Expectations of a High School and the Frequency of AcademicDishonesty as Reported by High School Principals in Virginia

    OpenAIRE

    Nichols, Richard Duane

    2014-01-01

    ABSTRACT A review of research indicates that academic dishonesty is a common occurrence at all levels of education with high school being a significant determinant in whether one will engage in cheating at the college level. Current research is heavily concentrated on cheating at the college level. This study investigated the academic expectations of a high school and the frequency of academic dishonesty as reported by high school principals. Specifically, four research questions were add...

  1. Academic Expectations of a High School and the Frequency of AcademicDishonesty as Reported by High School Principals in Virginia

    OpenAIRE

    Nichols, Richard Duane

    2014-01-01

    ABSTRACT A review of research indicates that academic dishonesty is a common occurrence at all levels of education with high school being a significant determinant in whether one will engage in cheating at the college level. Current research is heavily concentrated on cheating at the college level. This study investigated the academic expectations of a high school and the frequency of academic dishonesty as reported by high school principals. Specifically, four research questions were add...

  2. 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.

  3. The Influence of Online Catalogs on Academic Library Use by College-Bound High School Seniors.

    Science.gov (United States)

    Craver, Kathleen W.

    1988-01-01

    This study examined the effect of the availability of an academic online catalog on the use of academic libraries by college-bound high school seniors to determine: (1) degree of academic library use in connection with research projects; (2) use of the catalog to search for library materials; and (3) the nature of library materials used. (12…

  4. Associations of Future Expectations, Negative Friends, and Academic Achievement in High-Achieving African American Adolescents

    Science.gov (United States)

    Cunningham, Michael; Corprew, Charles S., III; Becker, Jonathan E.

    2009-01-01

    The relations of future expectations (general and academic) to academic outcomes were examined in a sample of 129 African American high-achieving adolescents (majority female participants, n = 92). This study was interested in the multidimensional nature of future expectations. Results from the study confirm the hypothesis that academic future…

  5. 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…

  6. From High School Users College Students Grow: Providing Academic Library Research Opportunities to High School Students.

    Science.gov (United States)

    Pearson, Debra; McNeil, Beth

    2002-01-01

    Describes the University of Nebraska-Lincoln University Libraries' high school users program, which has grown from a small operation into a well-developed program. The resources of a large academic research library are made available to students so they may complete their high school coursework with a wider range of resources, and possibly, gain…

  7. The Influence of Academic Migration on the Intellectual Potential of Russia

    Science.gov (United States)

    Latova, Natalia V.; Savinkov, Vladimir I.

    2012-01-01

    The emigration of highly-qualified academics ("brain drain") is considered an essential factor in the decline of the human capital of post-Soviet Russia. However, statistics show that the scale of this phenomenon since 2000 was minor. The Russian scientists who went abroad for permanent residence or for a contract job abroad represented no more…

  8. [The Potential Role of an Academic Society for Oncology Specialists to Promote Cancer Education in Schools].

    Science.gov (United States)

    Nishiyama, Masahiko

    2015-08-01

    Cancer mortality in Japan is forecasted to become high; thus, learning about cancer, cancer prevention, and cancer treatment will be indispensable for the Japanese. Recognition of the increasing rates of cancer has initiated a discussion regarding the introduction of cancer education into the regular educational curriculum for the younger generation. The importance of cancer education is noww idely recognized, and the 2nd Basic Plan to Promote Cancer Control Programs is directed at early initiation of education. The Ministry of Education, Culture, Sports, Science and Technology is nowreview ing the detailed plan, with an intention to draw a conclusion by the end of the 2016 business year. However, ongoing debates have revealed that there are many obstacles in the way of this practice. Much effort should be directed at solving these issues in the most realistic way. This paper reviews potential actions by oncology specialists, and attempts to clarify the possible role of an academic society for oncology specialists in the development of cancer education systems at school.

  9. Chinese high school students' academic stress and depressive symptoms: gender and school climate as moderators.

    Science.gov (United States)

    Liu, Yangyang; Lu, Zuhong

    2012-10-01

    In a sample of 368 Chinese high school students, the present study examined the different effects of Chinese high school students' academic stress on their depressive symptoms and the moderating effects of gender and students' perceptions of school climate on the relationships between their academic stress and depressive symptoms. Regression mixture model identified two different kinds of subgroups in the effects of students' academic stress on their depressive symptoms. One subgroup contained 90% of the students. In this subgroup, the students' perceptions of academic stress from lack of achievement positively predicted their depressive symptoms. For the other 10% of the students, academic stress did not significantly predict their depressive symptoms. Next, multinomial regression analysis revealed that girls or students who had high levels of achievement orientation were more likely to be in the first subgroup. The findings suggested that gender and students' perceptions of school climate could moderate the relationships between Chinese high school students' academic stress and their depressive symptoms.

  10. The Chinese High School Student's Stress in the School and Academic Achievement

    Science.gov (United States)

    Liu, Yangyang; Lu, Zuhong

    2011-01-01

    In a sample of 466 Chinese high school students, we examined the relationships between Chinese high school students' stress in the school and their academic achievements. Regression mixture modelling identified two different classes of the effects of Chinese high school students' stress on their academic achievements. One class contained 87% of…

  11. College and Academic Self-Efficacy as Antecedents for High School Dual-Credit Enrollment

    Science.gov (United States)

    Ozmun, Cliff D.

    2013-01-01

    Do high school students who are predisposed to enroll in dual-credit courses already possess high levels of motivation or college and academic self-efficacy? Students in this study reported being academically motivated, but they did not report high levels of confidence in their ability to perform certain college-associated tasks. Of 52 items…

  12. The Chinese High School Student's Stress in the School and Academic Achievement

    Science.gov (United States)

    Liu, Yangyang; Lu, Zuhong

    2011-01-01

    In a sample of 466 Chinese high school students, we examined the relationships between Chinese high school students' stress in the school and their academic achievements. Regression mixture modelling identified two different classes of the effects of Chinese high school students' stress on their academic achievements. One class contained 87% of…

  13. Academic self-concept in high school: predictors and effects on adjustment in higher education.

    Science.gov (United States)

    Wouters, Sofie; Germeijs, Veerle; Colpin, Hilde; Verschueren, Karine

    2011-12-01

    Academic self-concept is considered a relevant psychological construct influencing many educational outcomes directly or indirectly. Therefore, the major focus of the current study is on the predictors and effects of academic self-concept in late adolescence. First, we studied the simultaneous effects of individual, class-average and school-average achievement (i.e., assessed by school grades) on academic self-concept in the final year of high school, thereby replicating and extending previous research on the big-fish-little-pond effect model. Second, the predictive value of high school academic self-concept for academic adjustment and success in the first year of higher education was examined. The sample comprised 536 twelfth grade students (44% boys) recruited from 24 schools (67 classes) that were representative with regard to geographical region and educational network in Flanders. Structural equation modeling showed that, when examining the joint contribution of school- and class-average achievement, only class-average achievement was significantly and negatively associated with academic self-concept. Furthermore, a significant effect of academic self-concept in high school on academic adjustment and success in higher education (in addition to any effects of high school academic achievement) was found. These results highlight the importance of considering academic self-concept in educational research and policy.

  14. Study-Orientation of High and Low Academic Achievers at Secondary Level in Pakistan

    Science.gov (United States)

    Sarwar, Muhammad; Bashir, Muhammad; Khan, Muhammad Naemullah; Khan, Muhammad Saeed

    2009-01-01

    The study orientation of low and high academic achievers was compared, measured through a self-developed study orientation scale (SOS) primarily based on 47 items comparing study habits and attitude. Students' marks obtained in the 10th grade Examination determined the measure of academic performance. The analysis revealed that the high achievers…

  15. The Experience of Transitioning Two Adolescents with Asperger Syndrome in Academically Focused High Schools

    Science.gov (United States)

    Dixon, Roselyn M.; Tanner, Kathleen

    2013-01-01

    Adolescents with Asperger syndrome (AS) are increasingly being placed in academically focused high schools. These students, although academically able, may not be coping with the wider classroom and social demands of transition to, and within, the high school environment. Schools are keen to enroll these students. However, there appears to be a…

  16. 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…

  17. 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

  18. 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.

  19. The Effects of Academic Career Magnet Education on High Schools and Their Graduates.

    Science.gov (United States)

    Crain, Robert L.; Allen, Anna; Thaler, Robert; Sullivan, Debora; Zellman, Gail L.; Little, Judith Warren; Quigley, Denise D.

    This book contains eight papers on a study of the effects of academic career magnetic education on high schools and their graduates. "Introduction" (Robert L. Crain) explains the study's objectives and methodology, which included an analysis of data files on 9,176 students who applied to 59 different academic career magnet education and…

  20. Use of Academic Libraries by High School Students: Implications for Research.

    Science.gov (United States)

    Craver, Kathleen W.

    1987-01-01

    This comprehensive review of the literature on the use of academic libraries by high school students and academic library/school library cooperation, examines descriptive articles, research studies, and reports of questionnaire data. Problems associated with the literature are discussed, and implications for future research are identified.…

  1. A Quantitative Study of Michigan High School Students' Perception of Parents' Role in Their Academic Success

    Science.gov (United States)

    Williams, Veryl

    2013-01-01

    The purpose of this study was to examine the relationships between parental involvement in academic success as determined by grade point average and Michigan high school students' perception of parent involvement with school, participation in homework, recognition of academic success, knowledge of school policies, and support of participation in…

  2. 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…

  3. Gender, Student Motivation and Academic Achievement in a Midsized Wisconsin High School

    Science.gov (United States)

    Lutzke, Steven Ronald

    2013-01-01

    This mixed-methods study investigated relationships among gender, academic motivation and achievement in a mid-sized Wisconsin high school. A questionnaire was developed that focused on perceived ability, achievement motives and achievement goals. Interviews with teachers focused on relationships among academic motivation and gender achievement.…

  4. Against the Odds: Academic Resilience among High-Ability African American Adolescents Living in Rural Poverty

    Science.gov (United States)

    Ellis, Wendy Taylor

    2010-01-01

    This qualitative study investigated the internal and external protective factors that serve to ameliorate barriers to academic achievement posed by the cultural factors of poverty, minority status, and rural residence for high-ability students, rendering them academically resilient. While there has been ample research on underachievement among…

  5. 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…

  6. 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

    2016-12-01

    Full Text Available The study conducted to examinethe 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 (0/01> p.

  7. 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.

  8. Acculturative and Psychosocial Predictors of Academic-Related Outcomes among Cambodian American High School Students

    Directory of Open Access Journals (Sweden)

    Khanh Dinh

    2008-01-01

    Full Text Available This study examined the acculturative and psychosocial predictors of academic-related outcomes among Cambodian American high school students from an urban school district in the State of Massachusetts. Student participants (N = 163 completed an anonymous survey that assessed demographic characteristics, acculturative experiences, intergenerational conflict, depression, and academic-related outcomes. The main results indicated that acculturative and psychosocial variables were significant predictors of academic-related outcomes. Specifically, Cambodian and Anglo/White cultural orientations and depression played significant roles across the four dimensions of academic-related outcomes, including grade point average, educational aspirations, beliefs in the utility of education, and psychological sense of school membership. This study provides important implications for school-based and family-based prevention and intervention programs in addressing the acculturative and academic challenges faced by Cambodian American students.

  9. Acculturative and Psychosocial Predictors of Academic-Related Outcomes among Cambodian American High School Students

    Directory of Open Access Journals (Sweden)

    Khanh Dinh

    2008-01-01

    Full Text Available This study examined the acculturative and psychosocial predictors of academic-related outcomes among Cambodian American high school students from an urban school district in the State of Massachusetts. Student participants (N = 163 completed an anonymous survey that assessed demographic characteristics, acculturative experiences, intergenerational conflict, depression, and academic-related outcomes. The main results indicated that acculturative and psychosocial variables were significant predictors of academic-related outcomes. Specifically, Cambodian and Anglo/White cultural orientations and depression played significant roles across the four dimensions of academic-related outcomes, including grade point average, educational aspirations, beliefs in the utility of education, and psychological sense of school membership. This study provides important implications for school-based and family-based prevention and intervention programs in addressing the acculturative and academic challenges faced by Cambodian American students.

  10. High School Counselors' Perceptrons of the Academic and Personality Attributes Important to a Career in Nursing.

    Science.gov (United States)

    Blasdell, Alison L.; Hudgins-Brewer, Sandra

    1999-01-01

    High school counselors (n=95) identified characteristics they considered important for nursing. Leadership and academic achievement were rated less important than for other careers. compassion, kindness, and obedience were considered important but not decision making or assertiveness. (SK)

  11. 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.

  12. 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…

  13. Conditions for high-potential female entrepreneurship

    OpenAIRE

    Terjesen, Siri A.

    2016-01-01

    Female-led ventures that are market-expanding, export-oriented, and innovative contribute substantially to local and national economic development, as well as to the female entrepreneur’s economic welfare. Female-led ventures also serve as models that can encourage other high-potential female entrepreneurs. The supply of high-potential entrepreneurial ventures is driven by individuals’ entrepreneurial attitudes and institutional factors associated with a country’s conditions for entrepreneuri...

  14. Academic achievement and career choice in science: Perceptions of African American urban high school students

    Science.gov (United States)

    Jones, Sheila Kay

    2007-12-01

    Low test scores in science and fewer career choices in science among African American high school students than their White counterparts has resulted in lower interest during high school and an underrepresentation of African Americans in science and engineering fields. Reasons for this underachievement are not known. This qualitative study used a grounded theory methodology to examine what influence parental involvement, ethnic identity, and early mentoring had on the academic achievement in science and career choice in science of African American urban high school 10th grade students. Using semi-structured open-ended questions in individual interviews and focus groups, twenty participants responded to questions about African American urban high school student achievement in science and their career choice in science. The median age of participants was 15 years; 85% had passed either high school biology or physical science. The findings of the study revealed influences and interactions of selected factors on African American urban high school achievement in science. Sensing potential emerged as the overarching theme with six subthemes; A Taste of Knowledge, Sounds I Hear, Aromatic Barriers, What Others See, The Touch of Others, and The Sixth Sense. These themes correlate to the natural senses of the human body. A disconnect between what science is, their own individual learning and success, and what their participation in science could mean for them and the future of the larger society. Insight into appropriate intervention strategies to improve African American urban high school achievement in science was gained.

  15. High-Achieving High School Students and Not so High-Achieving College Students: A Look at Lack of Self-Control, Academic Ability, and Performance in College

    Science.gov (United States)

    Honken, Nora B.; Ralston, Patricia A. S.

    2013-01-01

    This study investigated the relationship among lack of self-control, academic ability, and academic performance for a cohort of freshman engineering students who were, with a few exceptions, extremely high achievers in high school. Structural equation modeling analysis led to the conclusion that lack of self-control in high school, as measured by…

  16. High school concussions in the 2008-2009 academic year: mechanism, symptoms, and management.

    Science.gov (United States)

    Meehan, William P; d'Hemecourt, Pierre; Comstock, R Dawn

    2010-12-01

    An estimated 136 000 concussions occur per academic year in high schools alone. The effects of repetitive concussions and the potential for catastrophic injury have made concussion an injury of significant concern for young athletes. The objective of this study was to describe the mechanism of injury, symptoms, and management of sport-related concussions using the High School Reporting Information Online (HS RIO) surveillance system. Descriptive epidemiology study. All concussions recorded by HS RIO during the 2008-2009 academic year were included. Analyses were performed using SPSS software. Chi-square analysis was performed for all categorical variables. Statistical significance was considered for P concussions were recorded. The most common mechanism (76.2%) was contact with another player, usually a head-to-head collision (52.7%). Headache was experienced in 93.4%; 4.6% lost consciousness. Most (83.4%) had resolution of their symptoms within 1 week. Symptoms lasted longer than 1 month in 1.5%. Computerized neuropsychological testing was used in 25.7% of concussions. When neuropsychological testing was used, athletes were less likely to return to play within 1 week than those for whom it was not used (13.6% vs 32.9%; P < .01). Athletes who had neuropsychological testing appeared less likely to return to play on the same day (0.8% vs 4.2%; P = .056). A greater proportion of injured, nonfootball athletes had computerized neuropsychological testing than injured football players (23% vs 32%; P = .02) When computerized neuropsychological testing is used, high school athletes are less likely to be returned to play within 1 week of their injury. Concussed football players are less likely to have computerized neuropsychological testing than those participating in other sports. Loss of consciousness is relatively uncommon among high school athletes who sustain a sport-related concussion. The most common mechanism is contact with another player. Some athletes (1

  17. Factors Influencing Academic Self-Concept of High-Ability Girls in Singapore

    Science.gov (United States)

    Yeo, Melissa Mui Mei; Garces-Bacsal, Rhoda Myra

    2014-01-01

    This study aimed at investigating the impact of entering high-ability classes on the academic self-concept of high-ability primary girls in Singapore. Participants in this study are 91 Primary 4 girls, 30 high-ability pupils, and 61 pupils from classes that include high-, middle-, and low-ability pupils. This study utilized a mixed-method…

  18. Explorations of Metacognition Among Academically Talented Middle and High School Mathematics Students

    OpenAIRE

    Young, Adena Elizabeth

    2010-01-01

    The purpose of this dissertation was to examine metacognition among academically talented middle and high school mathematics students from both educational psychology and mathematics education perspectives. A synthesis of the literatures and three studies employing quantitative, qualitative, and mixed methodologies were used to address three research questions: (a) What is metacognition, (b) What are the relationships between metacognition and academic achievement, and (c) How should educati...

  19. 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.

  20. Academic achievement in the high school years: the changing role of school engagement.

    Science.gov (United States)

    Chase, Paul A; Hilliard, Lacey J; Geldhof, G John; Warren, Daniel J A; Lerner, Richard M

    2014-06-01

    School engagement is an important theoretical and practical cornerstone to the promotion of academic accomplishments. This article used a tripartite-behavioral, emotional, and cognitive-model of school engagement to assess the relationship between school engagement and academic success among high school students, and to determine whether a reciprocal relationship exists between these constructs. Data were derived from 710 youth (69% female) who took part in Waves 6 through 8 (Grades 10 through 12) of the 4-H study of positive youth development. Longitudinal confirmatory factor analyses confirmed the invariance of the tripartite model of school engagement. Results of a structural equation model showed that the components of school engagement and academic achievement were mutually predictive and that these predictions varied from grade to grade. Future possibilities for evaluating the relationship between school engagement and academic achievement, as well as the implications for educational policy and practice, are discussed.

  1. Relationships between Depression and High Intellectual Potential

    Directory of Open Access Journals (Sweden)

    Catherine Weismann-Arcache

    2012-01-01

    Full Text Available This paper proposes to analyse the relationships between depression and high intellectual potential through a multidisciplinary and original approach. Based on their respective experience in psychology and child psychiatry, the authors will focus their analysis on creative potential. First, relationships between creativity (literary, artistic, or scientific creativity and melancholy (“melancholy” comes from the Greek words for “black” (“melas” and “bile” (“khole” will be examined from antiquity to modern times. Aristotle introduced a quantitative factor, asserting that levels of melancholy and black bile are positively correlated; however, under a given threshold of black bile, it can give rise to an exceptional being. Second, the case study of Blaise Pascal (scientific and philosophical creativity associated with major depressive episodes from childhood will be presented and discussed. This case study sheds light on the paradoxical role of depression in the overinvestment in intellectual and creative spheres as well as on the impact of traumatic events on high intellectual potential. Third, observations will be reported based on a study conducted on 100 children with high intellectual potential (6–12 years old. Finally, based on these different levels of analysis, it appears that heterogeneity of mental functioning in children with high intellectual potential is at the center of the creative process and it has related psychological vulnerability.

  2. 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.

  3. 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.

  4. Using the give-get grid to understand potential expectations of engagement in a community-academic partnership.

    Science.gov (United States)

    Southerland, Jodi; Behringer, Bruce; Slawson, Deborah L

    2013-11-01

    Research suggests that stakeholder investment is maximized when partnerships understand the assumptions held by partners of the benefits to be derived and contributions to be made to the partnership. In 2011, representatives from seven rural county high schools and five university departments participated in a planning workshop designed to identify elements of an effective community-academic partnership to address adolescent obesity disparity in Southern Appalachia. The purpose of this investigation was to examine key elements of partnership building by way of the Give-Get Grid partnership tool. Content analysis was conducted to identify emerging themes. University representatives consistently identified more proposed program contributions as well as benefits than their high school partners. University personnel responses generally pertained to their level of participation and investment in the partnership, whereas high school personnel tended to identify contributions fundamental to both partnership and program success. Additionally, content analysis uncovered programmatic facilitators and potential barriers that can be instrumental in program planning and forming program messages. Findings suggest that although partners often share common goals, perceptions of the value of investment and benefits may vary. The Give-Get Grid can be used during the program-planning phase to help identify these differences. Implications for practice are discussed.

  5. 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…

  6. 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.

  7. Relationship of High School Principal Organizational Commitment and Campus Academic Performance

    Science.gov (United States)

    Edison, David Allen

    2012-01-01

    The purpose of the study was to explore the relationship of Texas high school principals' organizational commitment and the academic performance of the high schools served by the principals. Three components of principal organizational commitment--affective commitment, continuance commitment, and normative commitment--were assessed using the…

  8. 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…

  9. 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…

  10. The Effects of Modeling Instruction on High School Physics Academic Achievement

    Science.gov (United States)

    Wright, Tiffanie L.

    2012-01-01

    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…

  11. Learning Strategies and Their Relationships to Academic Performance of High School Students in Hong Kong

    Science.gov (United States)

    Yip, Michael C. W.

    2013-01-01

    The present study examines the dynamic relationship between academic performance of high school students and their respective learning and study strategies. Two hundred thirty-six high school students were recruited to participate in this study by completing a Chinese version of the Learning and Study Strategies Inventory--LASSI, to probe into the…

  12. The Frog Pond Revisited: High School Academic Context, Class Rank, and Elite College Admission

    Science.gov (United States)

    Espenshade, Thomas J.; Hale, Lauren E.; Chung, Chang Y.

    2005-01-01

    In this article, the authors test a "frog-pond" model of elite college admission proposed by Attewell, operationalizing high school academic context as the secondary school-average SAT score and number of Advanced Placement tests per high school senior. Data on more than 45,000 applications to three elite universities show that a high…

  13. Impact of Principal Leadership on Catholic High School Students' Academic Achievement in Edo State, Nigeria

    Science.gov (United States)

    Imhangbe, Osayamen Samson

    2012-01-01

    Over the years, students of Catholic High/Senior secondary schools in Edo state, Nigeria have maintained a significantly higher level of academic achievement than their counterparts in public schools in the state. This development has not only been a cause of serious concern for parents of students who attend public High/Senior secondary schools…

  14. 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

  15. The potential of purpose-built corpora in the analysis of student academic writing in English

    OpenAIRE

    Julia Hüttner

    2010-01-01

    The trend towards using English as an academic lingua franca has undoubtedly increased the awareness of a need for specific EAP writing instruction and inroads into researching student writing have been made. However, systematic improvements for a theory-informed teaching practice still require more detailed knowledge of the current state of student academic writing, which also takes into account local practices and requirements. Extended genre analysis provides such a means of researching st...

  16. Early Identification of Educationally High Potential and High Risk Children.

    Science.gov (United States)

    Keogh, Barbara K.; Smith, Carol E.

    Early identification of educationally high potential and high risk children was investigated by following the same 49 children from kindergarten entrance through grade five of a regular school program. Kindergarten predictive measures were the Bender Gestalt Test and teachers' evaluations; follow-up measures were yearly standard achievement test…

  17. Recovery High Schools: Students and Responsive Academic and Therapeutic Services

    Science.gov (United States)

    Moberg, D. Paul; Finch, Andrew J.; Lindsley, Stephanie M.

    2014-01-01

    This article reviews findings from the authors' studies of recovery high schools (RHS), including a 1995 program evaluation of a school in New Mexico (Moberg & Thaler, 1995), a 2006-09 descriptive study of 17 recovery high schools (Moberg & Finch, 2008), and presents early findings from a current study of the effectiveness of recovery high…

  18. The Relationship between Cognitive and Emotional Intelligence and High School Academic Achievement.

    Science.gov (United States)

    Matešić, Krunoslav

    2015-06-01

    The study investigated the relationship between intelligence, emotional intelligence and academic achievement in high school. The study was conducted within the standardization of two instruments for Croatian samples. A total of 369 high school students from the Republic of Croatia participated in the study. They completed the Naglieri Nonverbal Ability Test (NNAT)--a test of cognitive intelligence and the BarOn Emotional Quotient Inventory: Youth Version (EQ-i:YV). Academic achievement criteria were general school achievement, Croatian language and mathematics. Several regression analyses were conducted on the results. The results show that cognitive intelligence and the adaptability scale to be consistent predictors of academic achievement. Emotional intelligence was not shown to be a significant predictor of school success.

  19. The Impact of the Norton High School Early College Program on the Academic Performance of Students at Norton High School

    Science.gov (United States)

    Barba, Eric Matthew

    2012-01-01

    The purpose of this study was to evaluate the effect of the Norton High School Early College Early College Program on academic measures for students at Norton High School. Measures of achievement include the results of the English Language Arts (ELA), Mathematics, Social Science, and Science portions of the California Standards Test (CST), Student…

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

    National Research Council Canada - National Science Library

    Auliyanti, Fijri; Sekartini, Rini; Mangunatmadja, Irawan

    2016-01-01

    ... 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...

  1. Academic Language Socialization in High School Writing Conferences

    Science.gov (United States)

    Gilliland, Betsy

    2014-01-01

    This study examines multilingual high school writers' individual talk with their teachers in two advanced English language development classes to observe how such talk shapes linguistically diverse adolescents' writing. Addressing adolescent writers' language socialization through microethnographic discourse analysis, the author…

  2. 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…

  3. Factors Influencing High School Students' Science Enrollments Patterns: Academic Abilities, Parental Influences, and Attitudes toward Science.

    Science.gov (United States)

    Khoury, Ghada A.; Voss, Burton E.

    This study was designed, using a path analytic model, to assess the relative impact of different factors on science concentration decisions made by grade 10 high school students (N=237). Included in the model were selected demographic and socioeconomic factors, academic abilities factors (including logical thinking), indicators of home and school…

  4. Early Reading Skills and Academic Achievement Trajectories of Students Facing Poverty, Homelessness, and High Residential Mobility

    Science.gov (United States)

    Herbers, Janette E.; Cutuli, J. J.; Supkoff, Laura M.; Heistad, David; Chan, Chi-Keung; Hinz, Elizabeth; Masten, Ann S.

    2012-01-01

    This investigation tested the importance of early academic achievement for later achievement trajectories among 18,011 students grouped by level of socioeconomic risk. Students considered to be at highest risk were those who experienced homelessness or high residential mobility (HHM). HHM students were compared with students eligible for free…

  5. 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'…

  6. Explorations of Metacognition among Academically Talented Middle and High School Mathematics Students

    Science.gov (United States)

    Young, Adena Elizabeth

    2010-01-01

    The purpose of this dissertation was to examine metacognition among academically talented middle and high school mathematics students from both educational psychology and mathematics education perspectives. A synthesis of the literatures and three studies employing quantitative, qualitative, and mixed methodologies were used to address three…

  7. Intergenerational Closure and Academic Achievement in High School: A New Evaluation of Coleman's Conjecture

    Science.gov (United States)

    Morgan, Stephen L.; Todd, Jennifer J.

    2009-01-01

    This article reexamines the conjecture of James S. Coleman that intergenerational social closure promotes student achievement in high schools, analyzing the best national data on academic achievement and social networks: the 2002 and 2004 waves of the Education Longitudinal Study. The results show that within the Catholic school sector, schools…

  8. Family Factors Associated with High Academic Competence among Former Head Start Children.

    Science.gov (United States)

    Robinson, Nancy M.; Weinberg, Richard A.; Redden, David; Ramey, Sharon L.; Ramey, Craig T.

    1998-01-01

    A study of 154 Head Start children with high academic achievement found that their families reported higher educational and income levels, had fewer children, were more likely to be Caucasian, reported less prolonged depression, and had more responsive, flexible, and less restrictive parenting practices than other Head Start children. (Author/CR)

  9. Academic Achievement and Emotional Intelligence: Predicting the Successful Transition from High School to University

    Science.gov (United States)

    Parker, James D. A.; Duffy, Jon M.; Wood, Laura M.; Bond, Barbara J.; Hogan, Marjorie J.

    2005-01-01

    This study examined the impact of emotional intelligence (EI) on the successful transition from high school to university. The short form of the Emotional Quotient Inventory (EQ-i) was completed by 1,426 first-year students attending four different universities within the first week of classes (September). At the end of the academic year (May),…

  10. Middle-Class Parents' Educational Work in an Academically Selective Public High School

    Science.gov (United States)

    Stacey, Meghan

    2016-01-01

    This article reports the findings of a study on the nature of parent-school engagement at an academically selective public high school in New South Wales, Australia. Such research is pertinent given recent policies of "choice" and decentralization, making a study of local stakeholders timely. The research comprised a set of interviews…

  11. 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…

  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. The Effects of Alcohol Use on Academic Achievement in High School

    Science.gov (United States)

    Balsa, Ana I.; Giuliano, Laura M.; French, Michael T.

    2011-01-01

    This paper examines the effects of alcohol use on high school students' quality of learning. We estimate fixed-effects models using data from the National Longitudinal Study of Adolescent Health. Our primary measure of academic achievement is the student's grade point average (GPA) abstracted from official school transcripts. We find that…

  14. Obesity, High-Calorie Food Intake, and Academic Achievement Trends among U.S. School Children

    Science.gov (United States)

    Li, Jian; O'Connell, Ann A.

    2012-01-01

    The authors investigated children's self-reported high-calorie food intake in Grade 5 and its relationship to trends in obesity status and academic achievement over the first 6 years of school. They used 3-level hierarchical linear models in the large-scale database (the Early Childhood Longitudinal Study--Kindergarten Cohort). Findings indicated…

  15. Explorations of Metacognition among Academically Talented Middle and High School Mathematics Students

    Science.gov (United States)

    Young, Adena Elizabeth

    2010-01-01

    The purpose of this dissertation was to examine metacognition among academically talented middle and high school mathematics students from both educational psychology and mathematics education perspectives. A synthesis of the literatures and three studies employing quantitative, qualitative, and mixed methodologies were used to address three…

  16. 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…

  17. Emotional Intelligence and Academic Achievement of High School Students in Kanyakumari District

    Science.gov (United States)

    Lawrence, A. S. Arul; Deepa, T.

    2013-01-01

    The objective of the study is to find the significant relationship between emotional intelligence and academic achievement of high school students with reference to the background variables. Survey method was employed. Two tools are used in this study namely self-made Trait Emotional Intelligence Questionnaire Short Form (TEIQue SF) and the…

  18. 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.

  19. High temperature alloys: their exploitable potential

    Energy Technology Data Exchange (ETDEWEB)

    Marriott, J.B.; Merz, M.; Nihoul, J.; Ward, J. (eds.) (Commission of the European Communities, Petten (Netherlands). Joint Nuclear Research Center; NET-TEAM, Garching (DE))

    1987-01-01

    This book is the proceedings of a conference dealing with fundamental and technical aspects of the applications of high temperature alloys. It is split into five sections which cover the opening session of the conference and four further sessions covering: the theoretical and practical limits for HT alloys; the potential for development in alloys and processing; engineering considerations; the future outlook. The different sessions each included a number of invited papers followed by a series of posters and were concluded by a presentation of a 'synthesis' by a session rapporteur and general discussion. This structure is retained in the proceedings, including the discussion points in those cases where the authors have provided written answers to the questions raised. This book will be of interest to metallurgists, materials scientists, physicists and research workers in high temperature materials.

  20. 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…

  1. 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.

  2. 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…

  3. 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

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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

  9. 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

  10. 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…

  11. 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…

  12. The Impact of Principal Perception on Student Academic Climate and Achievement in High School: How Does It Measure Up?

    Science.gov (United States)

    Urick, Angela; Bowers, Alex J.

    2014-01-01

    The purpose of this study is to examine the independent direct effects of student and principal perceptions of academic climate on student achievement in high school. To date, few studies have considered the influence of principal perceptions of academic climate on student achievement. In the present study, we test a set of two-level hierarchical…

  13. 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

  14. Solid Waste Characterization and Recycling Potential for University Technology PETRONAS Academic Buildings

    Directory of Open Access Journals (Sweden)

    Amirhossein Malakahmad

    2010-01-01

    Full Text Available Problem statement: In many countries such as Malaysia, it is increasingly more difficult to find suitable locations for landfills, which are accepted by the population. These circumstances are to be found all over the world and make new strategies for waste management necessary. Approach: Integrated Solid Waste Management (ISWM systems are one of the greatest challenges for sustainable development. But for any ISWM system to be successful, the first step is to carry out waste characterization studies. Therefore, the study was conducted to characterize the quality and quantity of generated solid waste at University Technology PETRONAS (UTP academic buildings to suggest a recycling system with emphasis on recycling container size and arrangement. Results: Initially, a survey was conducted to highlight the existing situation of recycling activities and recycle bins condition in the campus. Then, six different sampling points were selected at campus academic complex and solid waste from those points was characterized for both term-time and semester break periods. Procedure of sampling involved unloading and analyzing a quantity of produced daily waste at each building in a controlled area. The integrity of all received waste was maintained regardless of the odor or physical decay. While survey outcomes shows that 80% of students and staff were interested to take part in recycling activities only 53% of them have practiced in it and the main reasons were that 75 and 83% of them could not find suitable and enough number of recycle bin, respectively. In another development it was obtained that up to 80% of produced materials at academic building are recyclable while paper percentage is predominant with 40% and 33% during term-time and semester break, respectively. Food waste was detected in all samples which could lead cross contamination, value drop and development of odor and flies. The solid waste generation was varied between 8

  15. The potential of purpose-built corpora in the analysis of student academic writing in English

    Directory of Open Access Journals (Sweden)

    Julia Hüttner

    2010-08-01

    Full Text Available The trend towards using English as an academic lingua franca has undoubtedly increased the awareness of a need for specific EAP writing instruction and inroads into researching student writing have been made. However, systematic improvements for a theory-informed teaching practice still require more detailed knowledge of the current state of student academic writing, which also takes into account local practices and requirements. Extended genre analysis provides such a means of researching student writing in specific settings. This is an innovative methodology which expands on English for Specific Purposes (ESP genre analysis (cf. Bhatia, 1993, 2004; Swales, 1990, 2004 to systematically integrate corpus linguistic tools into the analysis and to take into account the special status of student genres. A special advantage of this methodology is that it can be applied easily and successfully to small-scale purpose-built corpora. This paper presents an application of extended genre analysis to a corpus of 55 student paper conclusions produced by non-native speakers in the initial phase of their studies. Findings suggest systematic differences in structure between student and expert genres, as well as a more complex set of differences in lexico-grammar, and especially the use of formulaic language, between research articles and non-native student papers. The implications of these findings as well as of the proposed methodology of corpus-based genre analysis for teaching practice are also discussed.

  16. Alcohol consumption and academic performance in a population of Spanish high school students.

    Science.gov (United States)

    López-Frías, M; de la fe Fernandez, M; Planells, E; Miranda, M T; Mataix, J; Llopis, J

    2001-11-01

    The present study was designed to identify patterns of alcohol consumption among Spanish high school students and describe the relationship between alcohol intake and school performance. The sample population consisted of students, aged 14 to 19 years, who were attending high school during the academic year 1994-95 in the city of Granada in southern Spain. We studied 1,602 (861 female) students (alpha error - 0.05, sampling error = 5%), using a self-administered questionnaire that contained items about individual and family demographics, quantity and frequency of alcohol consumption, and school performance. Total alcohol consumption was recorded as grams (g) of alcohol per week and per day for three categories of alcoholic drinks: wine, beer and distilled spirits. The percentage of nondrinkers was 21.05% for male adolescents and 28.56% for female adolescents. The mean amount of alcohol consumed per week was larger in male than in female students (F= 18.36, l/l,594 df, p alcohol consumed. No significant differences in drinking patterns were found between students at public and private schools. The risk of academic failure increased considerably when more than 150 g of alcohol were consumed per week (OR: 2.91; 95% CI: 1.94-4.43). Although we cannot draw any conclusions about the causes of the association between academic failure and teenage drinking, our results do show that the risk of failing increases together with alcohol intake. However, it should be noted that academic achievement is also influenced by many factors other than alcohol consumption.

  17. 30 CFR 56.12011 - High-potential electrical conductors.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false High-potential electrical conductors. 56.12011... § 56.12011 High-potential electrical conductors. High-potential electrical conductors shall be covered, insulated, or placed to prevent contact with low potential conductors....

  18. 30 CFR 57.12011 - High-potential electrical conductors.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false High-potential electrical conductors. 57.12011... Electricity Surface and Underground § 57.12011 High-potential electrical conductors. High-potential electrical conductors shall be covered, insulated, or placed to prevent contact with low potential conductors....

  19. 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

  20. 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

  1. Adolescents' perceptions of their parents' academic expectations: comparison of American, Chinese-American, and Chinese high school students.

    Science.gov (United States)

    Chen, H; Lan, W

    1998-01-01

    Cultural background not only influences family beliefs about the value of education, but may affect how academic expectations are communicated by parents and perceived by their children. This study examined differences in willingness to conform to parents' expectations of academic achievement as perceived by American, Chinese-American, and Chinese high school students. Findings indicated that Chinese students were more willing to accept their parents' advice and cared more about fulfilling academic expectations than did American students. Students in all three groups had similar feelings of independence. The views of Chinese-American students reflected the influence of both their Chinese heritage and the American culture in which they resided.

  2. Parent-child attachment, academic performance and the process of high-school dropout: a narrative review.

    Science.gov (United States)

    Ramsdal, Gro; Bergvik, Svein; Wynn, Rolf

    2015-01-01

    Poor academic performance is a strong predictor of school dropout. Researchers have tried to disentangle variables influencing academic performance. However, studies on preschool and early care variables are seldom examined when explaining the school dropout process. We reviewed the literature on the relationship between caregiver-child attachment and academic performance, including attachment studies from preschool years, seeking out potential contributions to academic performance and the dropout process. The review was organized according to a model of four main mediating hypotheses: the attachment-teaching hypothesis, the social network hypothesis, the attachment-cooperation hypothesis, and the attachment self-regulation hypothesis. The results of the review are summed up in a model. There is some support for all four hypotheses. The review indicates that attachment and early care contribute substantially to dropout and graduation processes. Mediation effects should be given far more attention in future research.

  3. 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.

  4. 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

  5. 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.

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

    Directory of Open Access Journals (Sweden)

    Zeynep Demirtas

    2011-04-01

    Full Text Available 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 Scientific Reasoning created by Lawson. Success grades in first semester of students were used to determine the GPA of students. According to reasons of the research, a relation between scientific reasoning skills of high school students with their GPA and gender was found.

  7. 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.

  8. 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…

  9. 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…

  10. 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…

  11. Closing the Academic Achievement Gap on the California High School Exit Exam (CAHSEE) through Professional Learning Communities (PLC) Characteristics

    Science.gov (United States)

    Buenrostro, Samuel

    2012-01-01

    Purpose: The purpose of this study was to determine the degree of importance that DuFour's nine characteristics of highly effective schools have on closing the academic achievement gap on the California High School Exit Exam, as perceived by high school principals. The study also examined the strategies believed to be most important in developing…

  12. Closing the Academic Achievement Gap on the California High School Exit Exam (CAHSEE) through Professional Learning Communities (PLC) Characteristics

    Science.gov (United States)

    Buenrostro, Samuel

    2012-01-01

    Purpose: The purpose of this study was to determine the degree of importance that DuFour's nine characteristics of highly effective schools have on closing the academic achievement gap on the California High School Exit Exam, as perceived by high school principals. The study also examined the strategies believed to be most important in…

  13. 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…

  14. 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.

  15. Intelligence, classroom behavior, and academic achievement in children at high and low risk for psychopathology: a structural equation analysis.

    Science.gov (United States)

    Worland, J; Weeks, D G; Janes, C L; Strock, B D

    1984-09-01

    The intelligence, academic achievement, and classroom behavior of 158 children were assessed in a sample that is being followed longitudinally. The sample included children at high risk for mental disorder by virtue of having a parent with a psychiatric diagnosis of schizophrenia or affective disorder, children at moderate risk, and children at low risk. A series of path analyses indicated that in this sample (1) classroom behavior was more likely an affect that a cause of academic achievement, and (2) the influence of parental psychopathology on classroom behavior was mediated by a child's intelligence and academic achievement. We were unable to substantiate an unmediated causal link between parental psychopathology and children's academic achievement or classroom behavior.

  16. 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.

  17. 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.

  18. Potential High Resolution Dosimeters For MRT

    Science.gov (United States)

    Bräuer-Krisch, E.; Rosenfeld, A.; Lerch, M.; Petasecca, M.; Akselrod, M.; Sykora, J.; Bartz, J.; Ptaszkiewicz, M.; Olko, P.; Berg, A.; Wieland, M.; Doran, S.; Brochard, T.; Kamlowski, A.; Cellere, G.; Paccagnella, A.; Siegbahn, E. A.; Prezado, Y.; Martinez-Rovira, I.; Bravin, A.; Dusseau, L.; Berkvens, P.

    2010-07-01

    Microbeam Radiation Therapy (MRT) uses highly collimated, quasi-parallel arrays of X-ray microbeams of 50-600 keV, produced by 2nd and 3rd generation synchrotron sources, such as the National Synchrotron Light Source (NSLS) in the U.S., and the European Synchrotron Radiation Facility (ESRF) in France, respectively. High dose rates are necessary to deliver therapeutic doses in microscopic volumes, to avoid spreading of the microbeams by cardiosynchronous movement of the tissues. A small beam divergence and a filtered white beam spectrum in the energy range between 30 and 250 keV results in the advantage of steep dose gradients with a sharper penumbra than that produced in conventional radiotherapy. MRT research over the past 20 years has allowed a vast number of results from preclinical trials on different animal models, including mice, rats, piglets and rabbits. Microbeams in the range between 10 and 100 micron width show an unprecedented sparing of normal radiosensitive tissues as well as preferential damage to malignant tumor tissues. Typically, MRT uses arrays of narrow (˜25-100 micron-wide) microplanar beams separated by wider (100-400 microns centre-to-centre, c-t-c) microplanar spaces. We note that thicker microbeams of 0.1-0.68 mm used by investigators at the NSLS are still called microbeams, although some invesigators in the community prefer to call them minibeams. This report, however, limits it discussion to 25-100 μm microbeams. Peak entrance doses of several hundreds of Gy are surprisingly well tolerated by normal tissues. High resolution dosimetry has been developed over the last two decades, but typical dose ranges are adapted to dose delivery in conventional Radiation Therapy (RT). Spatial resolution in the sub-millimetric range has been achieved, which is currently required for quality assurance measurements in Gamma-knife RT. Most typical commercially available detectors are not suitable for MRT applications at a dose rate of 16000 Gy/s, micron

  19. Not choosing nursing: work experience and career choice of high academic achieving school leavers.

    Science.gov (United States)

    Neilson, Gavin R; McNally, James G

    2010-01-01

    Work experience has been a feature of the secondary school curriculum in the United Kingdom for a number of years. Usually requested by the pupil, it aims to provide opportunities for school pupils to enhance their knowledge and understanding of an occupation. The main benefits are claimed to be that it can help pupils develop an insight into the skills and attitudes required for an occupation and an awareness of career opportunities. However the quality and choice of placements are considered to be of great importance in this process and in influencing career choice [Department for Education and Skills (DfES), 2002a. Work Experience: A Guide for Employers. Department for Education and Skills, London]. As university departments of nursing experience a decline in the number of school pupils entering student nurse education programmes, and with the competition for school leavers becoming even greater, it is important to consider whether school pupils have access to appropriate work placements in nursing and what influence their experience has on pursuing nursing as a career choice. This paper is based on interview data from 20 high academic achieving fifth and sixth year school pupils in Scotland, paradigmatic cases from a larger survey sample (n=1062), who had considered nursing as a possible career choice within their career preference cluster, but then later disregarded nursing and decided to pursue medicine or another health care profession. This was partly reported by Neilson and Lauder [Neilson, G.R., Lauder, W., 2008. What do high academic achieving school pupils really think about a career in nursing: analysis of the narrative from paradigmatic case interviews. Nurse Education Today 28(6), 680-690] which examined what high academic achieving school pupils really thought about a career in nursing. However, the data was particularly striking in revealing the poor quality of nursing work experience for the pupils, and also their proposal that there was a need

  20. Association of overweight and obesity with decline in academic performance among female high-school students, Riyadh, Saudi Arabia.

    Science.gov (United States)

    Adaili, M A; Mohamed, A G; Alkhashan, H

    2017-02-01

    The aim of this study was to evaluate the association between overweight/obesity and future academic performance among high-school students in Saudi Arabia. This was a retrospective cohort study of 257 12th grade female students in Alabna (Ministry of Defence) high schools in Riyadh during 2013/14. Overweight/obesity was based on weight and height at 10th grade. Decline in academic performance was defined as a reduction by > 1 standard deviation in marks between 10th and 12th grades. One hundred and five students were overweight/obese and 30 had declined academic performance. Self-esteem scale was similar in both groups. In a multiple logistic regression model adjusted for sociodemographic characteristics, study-related lifestyle and self-esteem, overweight/obesity was associated with declining academic performance. Other independent associates included paternal and maternal education, and living outside governmentally provided housing. We report a negative independent association between overweight/obesity and subsequent academic performance among female high-school students in Saudi Arabia. The results highlight the need for community and school programmes to target overweight/obesity among high-school students.

  1. 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

  2. Motivation and Academic Help-Seeking in High School Computer Science

    Science.gov (United States)

    Cheong, Yuk Fai; Pajares, Frank; Oberman, Paul S.

    2004-01-01

    The primary objective of this study was to determine the degree to which academic motivation predicted the executive help-seeking, instrumental help-seeking, perceived benefits of help-seeking, and avoidance of help-seeking of high school students enrolled in computer science ( n = 314). Task goals were positively associated with instrumental help-seeking and perceiving the benefits of help-seeking and negatively associated with executive help-seeking; performance-avoid goals were negatively associated with instrumental help-seeking and positively associated with avoiding help-seeking. Controlling for motivation and computer science competence, girls were more likely to seek instrumental help and to perceive the benefits of help-seeking, and African American students were more likely to seek help than were White students or Asian American students. Despite possessing equal computer science skills, girls reported lower self-efficacy, self-concept, self-efficacy for self-regulation, and value than did boys.

  3. 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…

  4. Is Early Ability Grouping Good for High-Achieving Students' Psychosocial Development? Effects of the Transition into Academically Selective Schools

    Science.gov (United States)

    Becker, Michael; Neumann, Marko; Tetzner, Julia; Böse, Susanne; Knoppick, Henrike; Maaz, Kai; Baumert, Jürgen; Lehmann, Rainer

    2014-01-01

    The present study investigates school context effects on psychosocial characteristics (academic self-concept, peer relations, school satisfaction, and school anxiety) of high-achieving and gifted students. Students who did or did not make an early transition from elementary to secondary schools for high-achieving and gifted students in 5th grade…

  5. 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…

  6. 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…

  7. Folk High Schools and Dropouts from Upper Secondary School: Effects of Non-Academic Investments in Dropouts

    Science.gov (United States)

    Borgen, Solveig T.; Borgen, Nicolai T.

    2015-01-01

    High dropout rates from upper secondary school are related to substantial societal costs, and are hence a major policy concern. The Norwegian folk high schools provide a non-academic education in an intimate and nurturing environment where interpersonal and social skills are emphasised, and where individuals grow in sense of self-esteem and sense…

  8. 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…

  9. The Enabling and Protective Role of Academic Buoyancy in the Appraisal of Fear Appeals Used Prior to High Stakes Examinations

    Science.gov (United States)

    Symes, Wendy; Putwain, David W.; Remedios, Richard

    2015-01-01

    Prior to high stakes examinations, teachers may engage in instructional practices to encourage their students to prepare well for their exams, including the use of "fear appeals". The current study examined whether academic buoyancy played a role in student appraisals of fear appeals as threatening or challenging. High school students…

  10. 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

    2013-01-01

    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…

  11. 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…

  12. Academic Success for Students of Color . . . At What Cost? The Importance of School Context at Birch High School

    Science.gov (United States)

    Chambers, Terah T. Venzant; Tabron, Lolita A.

    2013-01-01

    Kiara, an African American rising freshman, has aspirations to become a medical doctor. She enrolls at Birch High School because of the reputation of the principal, Mr. Brown, whose vision for academic excellence permeates every corner of the school. Kiara graduates from high school with top honors, but realizes her success may have come at a…

  13. Academic Success for Students of Color . . . At What Cost? The Importance of School Context at Birch High School

    Science.gov (United States)

    Chambers, Terah T. Venzant; Tabron, Lolita A.

    2013-01-01

    Kiara, an African American rising freshman, has aspirations to become a medical doctor. She enrolls at Birch High School because of the reputation of the principal, Mr. Brown, whose vision for academic excellence permeates every corner of the school. Kiara graduates from high school with top honors, but realizes her success may have come at a…

  14. 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

    2013-01-01

    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…

  15. 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…

  16. The influence of high school academics on freshman college mathematics and science courses at SUNY Oswego

    Science.gov (United States)

    Hayali, Tolga

    This study examined the relationship between 2011 freshman college mathematics and science grades and freshman students' high school academics and demographic data, exploring the factors that contribute to the success of first-year STEM majoring freshman students at State University of New York at Oswego. The variables were Gender, Race, SES, School Size, Parent with College Education, High School Grade Point Average (HSGPA), Transfer Credit, SAT Composite Score, and New York State Regents Exam results, based on data from 237 freshman students entering college immediately following high school. The findings show HSGPA as a significant predictor of success in freshman College Mathematics and Sciences, Transfer Credit as a significant predictor in College Mathematics and College Chemistry, SES as a significant predictor in College Biology and College Chemistry, Parent with College Education as a significant predictor in College Biology and New York State Chemistry Regents Exam as a significant predictor in College Chemistry. Based on these findings, guidance counselors, science educators, and education institutions can develop a framework to determine which measurements are meaningful and advise students to focus on excellent performance in the Chemistry Regents Exams, take more college courses during high school, and maintain a high grade point average.

  17. 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.

  18. High school students' science academic achievement: The effect of the Lemov positive framing trust-building technique

    Science.gov (United States)

    Gigliette, Linda Marie

    The purpose of this research was to investigate the effect of a trust-building technique called "positive-framing" (Lemov, 2010, p. 204) on the level of student-teacher trust and students' science academic achievement. The existing literature was reviewed under the constructs of trust, types of trust, trust-building strategies, and student academic achievement. The identified problem is a lack of research into the effect of trust from the high school student perspective and the effect of trust on student academic achievement in science. In addition, there is no empirical evidence to support the effectiveness of the "positive-framing" (Lemov, 2010, p. 204) trust-building intervention. The study involved a volunteer, convenience sample of 9th-grade science students at one high school in Northern California (N=240). The study employed a quasi-experimental, pretest, posttest non-equivalent control group design to examine the level of student trust in the teacher, using the "Student trust in faculty scale" (Forsyth, Adams, & Hoy, 2011, p. 180), and the students' academic achievement, according to the Integrated Process Skills Test II (Okey, Wise, & Burns, 1982). The independent variable was the "positive-framing" (Lemov, 2010, p. 204) trust-building intervention; the two dependent variables were the level of student-teacher trust and student academic achievement. The composite data from the "Student trust in faculty scale" and the academic achievement test were evaluated by a multivariate analysis of covariance (MANCOVA). Results of this study indicated that the null hypothesis was accepted. The "positive-framing" (Lemov, 2010, p. 204) trust-building intervention did not have a significant effect on either the student-teacher trust level or academic achievement in science.

  19. 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.

  20. 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.

  1. 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…

  2. 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.

    2017-01-01

    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,…

  3. 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…

  4. 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…

  5. Longitudinal Analysis of Chinese High School Student's Stress in School and Academic Achievement

    Science.gov (United States)

    Liu, Yangyang; Lu, Zuhong

    2011-01-01

    In previous research, few studies have examined the effects of adolescents' stress in school on the change rates of their academic achievement. In the present study, we seek to examine the longitudinal relationships between adolescents' stress in school and the change rates of their academic achievement. The results indicated that for those whose…

  6. Publishing Strategies of Young, Highly Mobile Academics: The Question of Language in the European Context

    Science.gov (United States)

    Anderson, Laurie

    2013-01-01

    This paper examines links between publishing strategies and the academic mobility of multilingual entry-level scholars in the European context against the backdrop of European Union (EU) policies and research on academic labor market characteristics, skilled migration and scholarly publishing. An analysis of language of publication, patterns of…

  7. 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…

  8. Longitudinal Analysis of Chinese High School Student's Stress in School and Academic Achievement

    Science.gov (United States)

    Liu, Yangyang; Lu, Zuhong

    2011-01-01

    In previous research, few studies have examined the effects of adolescents' stress in school on the change rates of their academic achievement. In the present study, we seek to examine the longitudinal relationships between adolescents' stress in school and the change rates of their academic achievement. The results indicated that for those whose…

  9. Academic Libraries as High-Tech Gateways: A Guide to Design & Space Decisions. Second Edition.

    Science.gov (United States)

    Bazillion, Richard J.; Braun, Connie L.

    This book, based on research about libraries around the country, provides tools that can be used for planning and building an academic library space that streamlines access to information. It explains how to incorporate the latest innovations in academic library facility design; how to make the facility flexible for changing information technology…

  10. 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

  11. Honors and High-Ability Students: Factors That Predict Academic Efficacy, Critical Thinking Skills, and Academic Goals

    Science.gov (United States)

    Moon, Jessica Lynn

    2012-01-01

    The purpose of the quantitative study was threefold: (a) to examine high-ability students in and outside an honors program at a midwestern comprehensive university to determine differences in background and demographic characteristics between honors participants and nonparticipants of similar ability; (b) to determine differences in academic…

  12. Academic buoyancy, student's achievement, and the linking role of control: A cross-lagged analysis of high school students.

    Science.gov (United States)

    Collie, Rebecca J; Martin, Andrew J; Malmberg, Lars-Erik; Hall, James; Ginns, Paul

    2015-03-01

    Previous research has indicated that although academic buoyancy and student's achievement are associated, the relationship is relatively modest. We sought to determine whether another construct might link academic buoyancy and student's achievement. Based on prior theoretical and empirical work, we examined a sense of control as one possible linking mechanism. The study analysed data from 2,971 students attending 21 Australian high schools. We conducted a cross-lagged panel design as a first means of disentangling the relative salience of academic buoyancy, control, and achievement (Phase 1). Based upon these results, we proceeded with follow-up analyses of an ordered process model linking the constructs over time (Phase 2). Findings showed that buoyancy and achievement were associated with control over time, but not with one another (Phase 1). In addition, control appeared to play a role in how buoyancy influenced achievement and that a cyclical process may operate among the three factors over time (Phase 2). The findings suggest that control may play an important role in linking past experiences of academic buoyancy and achievement to subsequent academic buoyancy and achievement. © 2015 The British Psychological Society.

  13. Differences between High and Low Academic Achieving University Students in Learning and Study Strategies: A Further Investigation

    Science.gov (United States)

    Yip, Michael C. W.

    2009-01-01

    Following up on the general framework of the research study of Yip (2007), this article sets out a similar research question, investigating the differences between high and low academic achieving Hong Kong university students based on their different learning and study strategies. In this study, we recruited 100 university students who pursued…

  14. A Comparative Study on China-U.S.' APTHS (Academic Proficiency Test for High Schools): Past, Present and Future

    Science.gov (United States)

    Li, Xin; Yan, Wenfan

    2012-01-01

    This study followed the comparative research mode of description, interpretation, juxtaposition and comparison. Based on the literatures and data collected on the topic, the paper compared and analyzed the past, present and future of APTHS (academic proficiency test for high schools) in the two countries. Some contemplations on the common issues…

  15. 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…

  16. 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…

  17. Effectiveness of Selected Advanced Placement Programs on the Academic Performance and College Readiness of High School Students

    Science.gov (United States)

    Lewis, Traschell S.

    2012-01-01

    The purpose of this study was to examine the effectiveness of selected Advanced Placement (AP) programs on the academic performance and college readiness of high school students. Specifically, the researcher was concerned with ascertaining the effectiveness of social science, math, science, English, music/art and language AP programs on the…

  18. 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…

  19. Differences between High and Low Academic Achieving University Students in Learning and Study Strategies: A Further Investigation

    Science.gov (United States)

    Yip, Michael C. W.

    2009-01-01

    Following up on the general framework of the research study of Yip (2007), this article sets out a similar research question, investigating the differences between high and low academic achieving Hong Kong university students based on their different learning and study strategies. In this study, we recruited 100 university students who pursued…

  20. 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.

  1. 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

  2. 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…

  3. POTENTIAL: A Highly Adaptive Core of Parallel Database System

    Institute of Scientific and Technical Information of China (English)

    文继荣; 陈红; 王珊

    2000-01-01

    POTENTIAL is a virtual database machine based on general computing platforms, especially parallel computing platforms. It provides a complete solution to high-performance database systems by a 'virtual processor + virtual data bus + virtual memory' architecture. Virtual processors manage all CPU resources in the system, on which various operations are running. Virtual data bus is responsible for the management of datatransmission between associated operations, which forms the hinges of the entire system. Virtual memory provides efficient data storage and buffering mechanisms that conform to data reference behaviors in database systems. The architecture of POTENTIAL is very clear and has many good features,including high efficiency, high scalability, high extensibility, high portability, etc.

  4. Text of High Court's Ruling on Judges' Right to Upset Academic Decisions.

    Science.gov (United States)

    Stevens, John Paul

    1985-01-01

    The Supreme Court's opinion and concurring opinion in a case limiting the right of courts to overturn academic decisions, based on the case of university's dismissal of a student after his failure of an important examination, are presented. (MSE)

  5. The Effect of a Zoo-Based Experiential Academic Science Program on High School Students' Math and Science Achievement and Perceptions of School Climate

    Science.gov (United States)

    Mulkerrin, Elizabeth A.

    2012-01-01

    The purpose of this study was to determine the effect of an 11th-grade and 12th-grade zoo-based academic high school experiential science program compared to a same school-district school-based academic high school experiential science program on students' pretest and posttest science, math, and reading achievement, and student perceptions of…

  6. The Effect of a Zoo-Based Experiential Academic Science Program on High School Students' Math and Science Achievement and Perceptions of School Climate

    Science.gov (United States)

    Mulkerrin, Elizabeth A.

    2012-01-01

    The purpose of this study was to determine the effect of an 11th-grade and 12th-grade zoo-based academic high school experiential science program compared to a same school-district school-based academic high school experiential science program on students' pretest and posttest science, math, and reading achievement, and student perceptions of…

  7. 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.

  8. 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

  9. BRS Pampeira: new irrigated rice cultivar with high yield potential

    Directory of Open Access Journals (Sweden)

    Ariano Martins de Magalhães Júnior

    2016-12-01

    Full Text Available BRS Pampeira is a rice cultivar developed by Embrapa, recommended for irrigated cultivation in Brazil. It shows modern architecture, with high tillering and tolerance to lodging. It stands out for its high yield potential, medium cycle and good grain quality.

  10. 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.

  11. 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.

  12. A cross-sectional comparative study to determine the factors contributing to the academic performance of the high performers and low performers in 2nd year medical students

    Directory of Open Access Journals (Sweden)

    Yogeeta Sushant Walke

    2015-12-01

    Conclusion: Through our study, we identified important factors contributing to high performance in academics, and we concluded that students should incorporate all the factors in a well-coordinated manner rather than focusing on any single factor. If executed, appropriately it will definitely upgrade their academic performance and prevent undesirable failures. [Int J Basic Clin Pharmacol 2015; 4(6.000: 1072-1079

  13. The Role of Internet-Specific Epistemic Beliefs and Self-Regulation in High School Students' Online Academic Help Seeking: A Structural Equation Modeling Analysis

    Science.gov (United States)

    Cheng, Kun-Hung; Liang, Jyh-Chong; Tsai, Chin-Chung

    2013-01-01

    Three instruments (i.e., Internet-specific epistemic beliefs, self-regulation, and online academic help seeking questionnaires) were administered to 319 high school students with the aim of understanding the role of Internet specific epistemic beliefs and self-regulation in their online academic help seeking. Through a structure equation modeling…

  14. A New Model for Student Support in High-Poverty Urban Elementary Schools: Effects on Elementary and Middle School Academic Outcomes

    Science.gov (United States)

    Walsh, Mary E.; Madaus, George F.; Raczek, Anastasia E.; Dearing, Eric; Foley, Claire; An, Chen; Lee-St. John, Terrence J.; Beaton, Albert

    2014-01-01

    Efforts to support children in schools require addressing not only academic issues, but also out-of-school factors that can affect students' ability to succeed. This study examined academic achievement of students participating in City Connects, a student support intervention operating in high-poverty elementary schools. The sample included 7,948…

  15. The negative influence of significant others on high academic achieving school pupils' choice of nursing as a career.

    Science.gov (United States)

    Neilson, Gavin R; McNally, Jim

    2013-03-01

    The International Council of Nurses proposes that the shortage of nurses is global in scale and is expected to become much worse in the years ahead. A major factor impacting on the worldwide nursing shortage is the diminishing number of young people choosing nursing as a career (International Council of Nurses, 2008). One important dimension of the school pupils' career choice process is their interactions with significant others and the influence of these significant others (Hodkinson and Sparkes, 1997). As Schools/Departments of Nursing endeavour to attract more intellectual school leavers it is important to examine what advice and opinions are significant others giving regarding nursing as a career choice and how influential is this advice. This paper is based on interview data from 20 high academic achieving 5th and 6th year school pupils in Scotland, paradigmatic cases from a larger sample, who had considered nursing as a possible career choice within their career preference cluster, but then later disregarded nursing and decided to pursue medicine or another health care profession. The data was particularly striking in revealing the negative influence of significant others on high academic achieving school pupils' choice of nursing as a career. The influence of significant others, these being specifically parents, guardians, guidance teachers and career advisors was very apparent in the data in that they had a very negative view regarding nursing as a career choice for high academic achieving school pupils.

  16. 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 i

  17. 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…

  18. 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…

  19. High-Risk Drinking and Academic Performance among College Student Veterans

    Science.gov (United States)

    Grossbard, Joel R.; Widome, Rachel; Lust, Katherine; Simpson, Tracy L.; Lostutter, Ty W.; Saxon, Andrew

    2014-01-01

    Heavy drinking and psychiatric symptoms pose challenges to college student Veterans and may undermine academic success. We used Boynton College Student Health Survey data to assess highrisk drinking (HRD), psychiatric symptoms, and psychosocial stressors among student Veterans (N = 1,679) with and without prior deployment. Rates of HRD and…

  20. Self-Regulation, Executive Function, Working Memory, and Academic Achievement of Female High School Students

    Science.gov (United States)

    Halloran, Roberta Kathryn

    2011-01-01

    Self-regulation, executive function and working memory are areas of cognitive processing that have been studied extensively. Although many studies have examined the constructs, there is limited empirical support suggesting a formal link between the three cognitive processes and their prediction of academic achievement. Thus, the present study…

  1. 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…

  2. Educational Expectations and Academic Achievement among Middle and High School Students

    Science.gov (United States)

    Bui, Khanh

    2007-01-01

    Using data from the National Education Longitudinal Study (NELS), this report examined the prospective relationships between educational expectations and academic achievement among students (n = 10,262) surveyed and tested in Grades 8, 10, and 12. Cross-lagged analyses indicated that between Grades 8 and 10 the path from achievement to…

  3. 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…

  4. 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…

  5. Academically Successful African American Male Urban High School Students' Experiences of Mattering to Others at School

    Science.gov (United States)

    Tucker, Catherine; Dixon, Andrea; Griddine, Ke'Shana

    2010-01-01

    Mattering to others has been shown to be a key construct of mental health and wellness. Emerging research links interpersonal mattering and school climate. In this study, the authors use transcendental phenomenology to explore how interpersonal mattering impacts the academic achievement of urban African American males who are academically…

  6. 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...... adverse outcomes, such as a lower high school grade point average....

  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. Academic Achievement Trajectories of Homeless and Highly Mobile Students: Resilience in the Context of Chronic and Acute Risk

    Science.gov (United States)

    Cutuli, J. J.; Desjardins, Christopher David; Herbers, Janette E.; Long, Jeffrey D.; Heistad, David; Chan, Chi-Keung; Hinz, Elizabeth; Masten, Ann S.

    2012-01-01

    Analyses examined academic achievement data across 3rd through 8th grades (N = 26,474), comparing students identified as homeless or highly mobile (HHM) to other students in the federal free meal program (FM), reduced-price meals (RM), or neither (General). Achievement was lower as a function of rising risk status (General > RM > FM > HHM). Achievement gaps appeared stable or widened between HHM students and lower-risk groups. Math and reading achievement were lower and growth in math was slower in years of HHM identification, suggesting acute consequences of residential instability. Nonetheless, 45% of HHM students scored within or above the average range, suggesting academic resilience. Results underscore the need for research on risk and resilience processes among HHM students to address achievement disparities. PMID:23110492

  9. Systematic high-resolution assessment of global hydropower potential.

    Science.gov (United States)

    Hoes, Olivier A C; Meijer, Lourens J J; van der Ent, Ruud J; 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 estimates of hydropower potential have been local, and have yet to be applied on a global scale. This study is the first to formally present a detailed evaluation of the hydropower potential of each location, based on slope and discharge of each river in the world. The gross theoretical hydropower potential is approximately 52 PWh/year divided over 11.8 million locations. This 52 PWh/year is equal to 33% of the annually required energy, while the present energy production by hydropower plants is just 3% of the annually required energy. The results of this study: all potentially interesting locations for hydroelectric power plants, are available online.

  10. Systematic high-resolution assessment of global hydropower potential

    Science.gov (United States)

    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 estimates of hydropower potential have been local, and have yet to be applied on a global scale. This study is the first to formally present a detailed evaluation of the hydropower potential of each location, based on slope and discharge of each river in the world. The gross theoretical hydropower potential is approximately 52 PWh/year divided over 11.8 million locations. This 52 PWh/year is equal to 33% of the annually required energy, while the present energy production by hydropower plants is just 3% of the annually required energy. The results of this study: all potentially interesting locations for hydroelectric power plants, are available online. PMID:28178329

  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. Towards providing effective academic literacy intervention

    Directory of Open Access Journals (Sweden)

    Tobie van Dyk

    2011-08-01

    Full Text Available This article focuses on the current situation in South Africa in which a number of factors related to academic literacy deleteriously affect student throughput. This has large financial implications for the country as well as tertiary institutions. Since significant numbers of students with high academic potential are at risk because of their low levels of academic literacy, all first year students at three South African universities write the Test of Academic Literacy Levels (TALL. This test can be used to assign students to appropriate support courses.  An explanation illustrated by empirical data is given of the construct and the use of TALL.   Preliminary conclusions in terms of the impact of the intervention are drawn as first iteration towards an in-depth longitudinal study to test the effectiveness/success of the academic literacy intervention.  Finally suggestions for further research are outlined.

  13. Teaching high-value, cost-conscious care to residents: the Alliance for Academic Internal Medicine–American College of Physicians Curriculum.

    Science.gov (United States)

    Smith, Cynthia D

    2012-08-21

    Health care expenditures are projected to reach nearly 20% of the U.S. gross domestic product by 2020. Up to $765 billion of this spending has been identified as potentially avoidable; many of the avoidable costs have been attributed to unnecessary services. Postgraduate trainees have historically received little specific training in the stewardship of health care resources and minimal feedback on resource utilization and its effect on the cost of care. This article describes a new curriculum that was developed collaboratively by the Alliance for Academic Internal Medicine and the American College of Physicians to address this training gap. The curriculum introduces a simple, stepwise framework for delivering high-value care and focuses on teaching trainees to incorporate high-value, cost-conscious care principles into their clinical practice. It consists of ten 1-hour, case-based, interactive sessions designed to be flexibly incorporated into the existing conference structure of a residency training program.

  14. Parental styles, conscientiousness, and academic performance in high school: a three-wave longitudinal study.

    Science.gov (United States)

    Heaven, Patrick C L; Ciarrochi, Joseph

    2008-04-01

    This article assesses whether perceived parental style influenced the extent to which adolescents became increasingly conscientious and whether changes in conscientiousness influenced academic grades 1 year later. Parental styles, conscientiousness, verbal, and numerical ability at Time 1 were measured. One year later conscientiousness was again assessed, and 1 year after that end-of-year exam results were obtained. More than 784 students (mean age=12.3 years, SD=0.49) participated in the 1st year. The data of 563 students were matched across the 3 years. Conscientiousness tended to decrease from Time 1 to Time 2. Structural equation modeling showed that adolescents with more authoritative parents experienced less of a decrease in conscientiousness at Time 2 than did students with less authoritative parents and the same baseline level of conscientiousness at Time 1. Additionally, the decrease in conscientiousness at Time 2 predicted worse grades at Time 3, even after controlling for baseline levels of academic achievement.

  15. 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.

  16. Is There an "Academic Vocabulary"?

    Science.gov (United States)

    Hyland, Ken; Tse, Polly

    2007-01-01

    This article considers the notion of "academic vocabulary": the assumption that students of English for academic purposes (EAP) should study a core of high frequency words because they are common in an English academic register. We examine the value of the term by using Cox-head's (2000) Academic Word List (AWL) to explore the distribution of its…

  17. High-impact practices and first-year seminars: A quasi-experimental study measuring change in academic self-efficacy

    Science.gov (United States)

    Barber Applewhite, Stephanie

    First-year seminars, high-impact practices, and academic self-efficacy have been identified as relevant to the successful transition process from high school to college. This study investigated the interconnections between freshman academic self-efficacy, high-impact practices, zone of proximal development and first-year seminars. This research contributed to the understandings of the significance of high-impact practices in the development of academic self-efficacy in freshman students. As colleges strive to improve retention from the freshman to sophomore years, it is useful to identify the relevance of high-impact practices within a first-year seminar on academic self-efficacy. A two-group, quasi-experimental study using a pre/post survey was conducted at a regional comprehensive university in east Texas in which 800 students were given a pre and post survey to measure academic self-efficacy. After matching for fidelity, eleven sections were identified for the control group (104 participants) and eleven sections (91 participants) were selected for the experiment group. The findings revealed that the overall gain in the mean of both groups from the pre to post survey was statistically significant. While the students in the high-impact sections reported a higher post mean on the College Academic Self-Efficacy Scale than those who did not receive high-impact instruction, the gain was not statistically significant.

  18. Recognizing young children with high potential: U-STARS∼PLUS.

    Science.gov (United States)

    Coleman, Mary Ruth

    2016-08-01

    Hands-on science is the ideal platform for observing young children's ability to solve problems, think deeply, and use their creative ingenuity to explore the world around them. Science is naturally interesting and offers authentic reasons to read for information and use math skills to collect, compile, and analyze data. This chapter will share one approach to nurturing and recognizing young children with high-potential: U-STARS∼PLUS (Using Science, Talents, and Abilities to Recognize Students∼Promoting Learning for Underrepresented Students). Each of the five components (high-end learning environments; teacher's observations of potential; engaging science activities; partnerships with parents; and capacity building for system change) will be explained. Concrete examples will be given for each area showing how it works and why it is important. Special attention will be paid to the needs of educationally vulnerable gifted children who remain underserved: racially, ethnically, and linguistically different; economically disadvantaged, and children who are twice exceptional (2e).

  19. QCD Effective action at high temperature and small chemical potential

    CERN Document Server

    Villavicencio, C

    2007-01-01

    We present a construction of an effective Yang-Mills action for QCD, from the expansion of the fermionic determinant in terms of powers of the chemical potential at high temperature, for the case of massless quarks. We analyze this expansion in the perturbative region and find that it gives extra spurious information. We propose for the non-perturbative sector a simplified effective action which, in principle, contains only the relevant information.

  20. Assessment of leaching potential of highly leaded jewelry.

    Science.gov (United States)

    Weidenhamer, Jeffrey D; Newman, Breinn E; Clever, Ashley

    2010-05-15

    Lead is a potent neurotoxin particularly toxic to young children, and in response to recent poisonings of children and high levels of lead contamination in children's jewelry, US regulatory standards for lead content in these items have become much more stringent. Parents are often advised to throw out suspect items in the trash. While household wastes are generally exempt from consideration as hazardous waste, the potential for leaching of hazardous quantities of lead from such items is unknown. A modified Toxicity Characteristic Leaching Procedure (TCLP), in which intact jewelry components were subjected to leaching, was used to evaluate the potential for leaching of lead from highly leaded jewelry. Of 62 jewelry components tested, 61 exceeded the US regulatory standard for lead of 5mg/L, and leachate lead concentrations averaged 1460 mg/L. Twenty-six of the component items tested yielded TCLP lead concentrations exceeding 1000 mg/L. These results demonstrate that highly leaded jewelry items may leach significant amounts of lead, and provide another reason to remove lead from these products. Furthermore, these results suggest that while the volume of such items in the municipal solid waste (MSW) stream is small, they have the potential to contribute significant quantities of lead to MSW leachates.

  1. 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

  2. Motivational Interviewing and Its Effect on Underachieving High Potential Adolescents

    Science.gov (United States)

    Richer, Ellen Thea

    2012-01-01

    Academic underachievement, a syndrome affecting nearly 50% of gifted adolescents across gender, race, and socioeconomic strata, has fueled research for decades, in an attempt to identify its antecedents, characteristics, and consequences on the individual and on society. The research bridges fields of inquiry that converge in the area of human…

  3. 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…

  4. Potential interaction between warfarin and high dietary protein intake.

    Science.gov (United States)

    Hornsby, Lori B; Hester, E Kelly; Donaldson, Amy R

    2008-04-01

    A 55-year-old Caucasian man was receiving warfarin therapy after undergoing aortic valve replacement. His international normalized ratio (INR) was stabilized with warfarin 95 mg/week for 5 weeks. Commencement of a low-carbohydrate, high-protein diet resulted in a series of subtherapeutic INRs that led to a 16% increase in the dosage requirement to maintain therapeutic INRs. After the patient discontinued the diet, his INR increased, and several dosage reductions were required until his INR stabilized with his original dosage of 95 mg/week. Two additional case reports have described a possible interaction between warfarin and a high-protein diet. The potential for increased dietary protein intake to raise serum albumin levels and/or cytochrome P450 activity has been postulated as mechanisms for the resulting decrease in INRs. Given the available animal and human data that demonstrate alterations in drug metabolism in the presence of altered dietary protein intake, an increase in warfarin metabolism due to cytochrome P450 activation appears to be the most likely cause. In addition to the previously reported cases, this case indicates a potential interaction between warfarin and a high-protein diet. Because of the popularity of high-protein diets and because of the risks associated with inadequate or excessive warfarin anticoagulation, patients and health care providers should be aware of this interaction to ensure appropriate monitoring when warranted.

  5. Commercializing Academic Research

    DEFF Research Database (Denmark)

    Czarnitzki, Dirk; Hussinger, Katrin; Schneider, Cédric

    2011-01-01

    The knowledge produced by academic scientists has been identified as a potential key driver of technological progress. Recent policies in Europe aim at increasing commercially orientated activities in academe. Based on a sample of German scientists across all fields of science, we investigate...

  6. 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.

  7. Case study teaching in high school biology: Effects on academic achievement, problem solving skills, teamwork skills, and science attitudes

    Science.gov (United States)

    Skolnick, Ronald

    The purpose of this study was to examine the constructivist-based " case study teaching methodology" in High School Biology classes, specifically investigating the effect this methodology had on Academic Achievement, Science Attitudes, Problem Solving Skills, and Teamwork Skills. The effect of Teacher Beliefs toward constructivist learning environments was also explored and investigated, using a quantitative measure (the Constructivist Learning Environment Survey, or CLES). A quasi-experimental design used eleven classes, five teachers, and two hundred fifty two high school biology students over two separate, consecutive quarters of a school year. Two researcher-made instruments measured Academic Achievement after each study quarter. T-Tests were used to compare the Experimental Group (Case Study Teaching Methodology) to the Control Group (Traditional Teaching) during each study quarter. Otis-Lennon School Ability Test (OLSAT) scores were used as a covariate for ANCOVA tests. Case Study Teaching Methodology had a statistically significant improvement on Academic Achievement during the first study quarter, but not the second quarter. Case Study Teaching Methodology had a statistically significant improvement on four of seven Science Attitudes, Problem Solving Skills, and Teamwork Skills during the second quarter of the study. This study is significant in that it addresses a knowledge gap regarding the effects of the constructivist-based case study teaching methodology on secondary science education. The theoretical implications of this study are meaningful: empirical evidence is added to the growing knowledge base regarding the benefits of constructivist theory. The practical implications are equally meaningful: case study teaching methodology is supported as an effective application of constructivist theory in the secondary science classroom.

  8. Potential impact of high temperature superconductors on MAGLEV transportation

    Science.gov (United States)

    Hull, J. R.

    1992-02-01

    This report describes the potential impact that high-temperature superconductors (HTS's) may have on transportation by magnetically levitated vehicles. It is not intended as a planning document, but rather as an overview of potential HTS applications to magnetic-levitation (maglev) transportation. The present maglev program in the United States is summarized, and the present status of development of HTS's is described. Areas identified for possible impact on maglev technology are: (1) liquid-nitrogen-cooled levitation magnets; (2) magnetic-field shielding of the passenger compartment; (3) superconducting magnetic energy storage for wayside power; (4) superconducting bearings for flywheel energy storage for wayside power; (5) downleads to continuously powered liquid-helium-cooled levitation magnets; and (6) liquid-hydrogen-cooled levitation magnets and linear motor propulsion windings. Major technical issues that remain to be resolved for the use of HTS's in maglev applications include thermal magnetic stability, mechanical properties, and critical current density at liquid-nitrogen temperatures.

  9. Mechanism of High-Order Harmonic Generation from Periodic Potentials

    CERN Document Server

    Du, Tao-Yuan

    2016-01-01

    We study numerically the Bloch electron wave-packet dynamics in periodic potentials to simulate laser-solid interactions. We introduce a quasi-classical model in the \\emph{k} space combined with the energy band structure to understand the high-order harmonic generation (HHG) process occurring in a subcycle timescale. This model interprets the multiple plateau structure in HHG spectra well and the linear dependence of cutoff energies on the amplitude of vector potential of the laser fields. It also predicts the emission time of HHG, which agrees well with the results by solving the time-dependent Schr\\"{o}dinger equation (TDSE). It provides a scheme to reconstruct the energy dispersion relations in Brillouin zone and to control the trajectories of HHG by varying the shape of laser pulses. This model is instructive for experimental measurements.

  10. Role of the Ionic Potential in High Harmonic Generation

    CERN Document Server

    Shafir, D; Higuet, J; Soifer, H; Dagan, M; Descamps, D; Mevel, E; Petit, S; Worner, H J; Pons, B; Dudovich, N; Mairesse, Y

    2013-01-01

    Recollision processes provide direct insight into the structure and dynamics of electronic wave functions. However, the strength of the process sets its basic limitations - the interaction couples numerous degrees of freedom. In this Letter we decouple the basic steps of the process and resolve the role of the ionic potential which is at the heart of a broad range of strong field phenomena. Specifically, we measure high harmonic generation from argon atoms. By manipulating the polarization of the laser field we resolve the vectorial properties of the interaction. Our study shows that the ionic core plays a significant role in all steps of the interaction. In particular, Coulomb focusing induces an angular deflection of the electrons before recombination. A complete spatiospectral analysis reveals the influence of the potential on the spatiotemporal properties of the emitted light.

  11. Potential impact of high temperature superconductors on maglev transportation

    Energy Technology Data Exchange (ETDEWEB)

    Hull, J.R.

    1992-02-01

    This report describes the potential impact that high-temperature superconductors (HTSs) may have on transportation by magnetically levitated vehicles. It is not intended as a planning document, but rather as an overview of potential HTS applications to magnetic-levitation (maglev) transportation. The present maglev program in the United States is summarized, and the present status of development of HTSs is described. Areas identified for possible impact on maglev technology are (1) liquid-nitrogen-cooled levitation magnets, (2) magnetic-field shielding of the passenger compartment, (3) superconducting magnetic energy storage for wayside power, (4) superconducting bearings for flywheel energy storage for wayside power, (5) downleads to continuously powered liquid-helium-cooled levitation magnets, and (6) liquid-hydrogen-cooled levitation magnets and linear motor propulsion windings. Major technical issues that remain to be resolved for the use of HTSs in maglev applications include thermal magnetic stability, mechanical properties, and critical current density at liquid-nitrogen temperatures.

  12. Manganese and the limits of high potential phototrophy

    Science.gov (United States)

    Fischer, W. W.; Hemp, J.; Johnson, J. E.

    2013-12-01

    Photosynthetic reaction centers create high-energy electrons using light, harnessing the charge separation to simultaneously provide the cell with a strong oxidant and strong reductant. Many substrates can be used as electron donors for phototrophy, however there appears to be important energetic limits. In oxygenic photosynthesis photosystem II (PSII) provides a very strong oxidant that is capable of oxidizing water (ca. +830 mV) to molecular oxygen at the water-oxidizing complex, a redox-active tetra-manganese cluster. Anoxygenic photosystems however appear to only be able to oxidize lower potential electron donors (Fe2+, H2, S0, HS, S2O32-, NO2-, AsO33-).. Several transitional photosystems have been proposed as evolutionary intermediates between anoxygenic and oxygenic photosynthesis, with electron donors of higher redox potentials such as nitrite (ca. +431 mV) or Mn2+ (ca. +780 mV) bridging the redox gap to water. While a range of observations from the geological record support a Mn2+-based transitional photosystem (Johnson et al. 2013), this proposed photochemical scheme is distinct from that observed in anoxygenic photosynthetic organisms. Mechanistically all anoxygenic reaction centers receive their electrons indirectly via soluble electron carriers such as cytochrome c, high potential iron sulfur proteins or cupredoxins. Conversely Mn2+ oxidation is only known to occur today via direct oxidation, such as during photoassembly of the water-oxidizing complex of PSII, or by two distinct, non-energy-conserving mechanisms using molecular oxygen. No natural photosystem is known to solely perform Mn2+-oxidation. The highest redox-potential accessed by known anoxygenic phototrophs oxidizes nitrite (Schott et al. 2010), but it has been unclear until now whether the reaction center is specially adapted to produce high potential oxidants, similar to that of PSII to oxidize Mn2+ and water. To constrain this we sequenced the genome of the nitrite-oxidizing phototroph

  13. Waste to Energy Potential - A High Concentration Anaerobic Bioreactor

    Science.gov (United States)

    2012-05-23

    REPORT DATE 23 MAY 2012 2. REPORT TYPE 3. DATES COVERED 00-00-2012 to 00-00-2012 4. TITLE AND SUBTITLE Waste to Energy Potential - A High...and fermentative bacteria break down organic carbon to VFAs Acetogens break down VFAs to CH3CO2 − and H2 + Acetoclastic methanogens break...s -999999 999999 7 481 su -999999 999999 0 .. -999999 999999 HCA8 pti Flo$&-tdgc Tan.\\ feed su -999999 999999 0 .. -999999 999999 A-l>o -999999

  14. High temperature solar furnace: current applications and future potential

    Energy Technology Data Exchange (ETDEWEB)

    Bjorndalen, N. [Dalhousie Univ., Faculty of Engineering, Halifax, NS (Canada)

    2003-02-15

    The high temperature solar furnace can offer great opportunities for the production of many types of products worldwide, but recent advances in this technology have been limited to metal reduction. The production of semiconductors, which are utilized to a great extent in the electronic industry, is a viable option for this technology that has been overlooked. Especially where sand and sunlight are plentiful (countries that surround the equator), silicon chips produced with a solar furnace can have great economical value. This paper describes current and potential solar furnace technologies. The components of the solar furnace are described, as well as metal reduction processes including zinc and aluminum production. The viability of silicon chip production is also examined. The possibilities for other product development using an extremely (up to 10,000 deg C) high temperature solar furnace are also discussed. Economically, the benefits of solar furnaces are great, with only high initial start-up costs and little operation costs. Metal reduction processes can also be enhanced with high temperature solar furnaces in that plugging problems are eliminated. By replacing conventional furnaces, such as blast and electric arc furnaces, with a high temperature solar furnace, CO{sub 2} emissions and energy consumption can be greatly reduced, which will bring in added dividends to the society. (Author)

  15. The writing retreat: a high-yield clinical faculty development opportunity in academic writing.

    Science.gov (United States)

    Cable, Christian T; Boyer, Debra; Colbert, Colleen Y; Boyer, Edward W

    2013-06-01

    The need for consistent academic productivity challenges junior clinician-scholars, who often lack the aptitude to ensure efficient production of manuscripts. To solve this problem, an academic division of a major medical center developed an off-site writing retreat. The purpose of the retreat was not to teach writing skills, but to offer senior mentor assistance with a focus on the elements of manuscript writing. The retreat paired senior faculty members with junior staff. Senior faculty identified manuscript topics and provided real-time writing and editing supervision. Team-building exercises, midcourse corrections, and debriefing interviews were built into the retreat. The number of manuscripts and grant proposals generated during the 2008-2011 retreats was recorded, and the program was evaluated by using unstructured debriefing interviews. An average of 6 to 7 faculty members and fellows participated in each retreat. During the past 4 years, participants produced an average of 3 grant proposals and 7 manuscripts per retreat. After the writing retreat, each fellow and junior faculty member produced an average of 4 scholarly products per year, compared to fewer than 2 for prior years' retreats. Participant feedback indicated the success of the retreat resulted from protected time, direct mentorship by the scholars involved, and pairing of authors, which allows for rapid production of manuscripts and accelerated the editing process. More than 80% of mentors returned each year to participate. The writing retreat is a feasible, effective strategy to increase scholarship among faculty, acceptable to mentees and mentors, and sustainable over time.

  16. What do high academic achieving school pupils really think about a career in nursing: analysis of the narrative from paradigmatic case interviews.

    Science.gov (United States)

    Neilson, Gavin R; Lauder, William

    2008-08-01

    As many Departments of Nursing within universities consider raising their academic entry requirements in an attempt to attract a more high academic achieving entrant and also endeavour to attract more school leavers one of the fundamental questions that needs to be answered is--are high academic achieving school pupils really interested in pursuing a career in nursing? The aim of this paper is to report on the findings from paradigmatic case interviews of high academic achieving school pupils who at one stage in their career choice process had considered nursing as a possible career choice but had ultimately disregarded nursing and had decided to pursue medicine or another health care profession. The study reports interview data from a sub-sample of (n=20) high academic achieving 5th and 6th year school pupils who participated in a larger survey of 5th and 6th year school pupils (n=1062). These were paradigmatic cases--high academic achieving school pupils who had considered nursing as a possible career choice within their career preference cluster but had ultimately disregarded nursing and decided to pursue medicine or another health care profession as a career choice. Participants reported that nursing was eventually not viewed as using their examination grades to the maximum benefit. Also the participants reported a belief that the work of the doctor is more important and academic as they cure patients whereas the work of the nurse is practical and routine as they only care for patients. The pupils in addition asserted a negative image of nursing and a low status level of nursing as a career. They also articulated the unremarkable typical school pupils they perceived would pursue nursing as a career choice and the type of school pupil that they had witnessed being encouraged toward nursing within their schools, both of which conflicted with their own typology. Ultimately the high academic achieving school pupils were doubtful and suspicious as to the credibility

  17. 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.

  18. 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.

  19. Microorganisms under high pressure--adaptation, growth and biotechnological potential.

    Science.gov (United States)

    Mota, Maria J; Lopes, Rita P; Delgadillo, Ivonne; Saraiva, Jorge A

    2013-12-01

    Hydrostatic pressure is a well-known physical parameter which is now considered an important variable of life, since organisms have the ability to adapt to pressure changes, by the development of resistance against this variable. In the past decades a huge interest in high hydrostatic pressure (HHP) technology is increasingly emerging among food and biosciences researchers. Microbial specific stress responses to HHP are currently being investigated, through the evaluation of pressure effects on biomolecules, cell structure, metabolic behavior, growth and viability. The knowledge development in this field allows a better comprehension of pressure resistance mechanisms acquired at sub-lethal pressures. In addition, new applications of HHP could arise from these studies, particularly in what concerns to biotechnology. For instance, the modulation of microbial metabolic pathways, as a response to different pressure conditions, may lead to the production of novel compounds with potential biotechnological and industrial applications. Considering pressure as an extreme life condition, this review intends to present the main findings so far reported in the scientific literature, focusing on microorganisms with the ability to withstand and to grow in high pressure conditions, whether they have innated or acquired resistance, and show the potential of the application of HHP technology for microbial biotechnology. © 2013.

  20. A Longitudinal Examination of Career Expectations and Outcomes of Academically Talented Students 10 and 20 Years Post-High School Graduation

    Science.gov (United States)

    Perrone, Kristin M.; Tschopp, Molly K.; Snyder, Erin R.; Boo, Jenelle N.; Hyatt, Claudine

    2010-01-01

    The purpose of this study was to examine career expectations and outcomes for individuals who were identified as academically talented high school students. Data for this study were collected at two different time periods: 10 years and 20 years after participants' high school graduation. A decade after graduation from high school, participants…

  1. 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,…

  2. Academic Service Quality and Instructional Quality.

    Science.gov (United States)

    Greiner, Keith; Westbrook, Thomas S.

    2002-01-01

    Examined the relationship between academic service quality and instructional quality in higher education. Found a high correlation between academic service and instructional quality, with academic service overlapping instructional quality in three dimensions: enthusiasm, organization, and rapport. (EV)

  3. An analysis of student academic outcomes in high-poverty schools

    Science.gov (United States)

    McCargar, Julie P.

    The present study explored the relationships between student performance outcomes in math and reading and school level variables. The purpose was to analyze the relationship between student achievement on the Tennessee Comprehensive Exam and student academic growth as measured by value-added scores and five school-level variables. The sample group was 102 Title I elementary and middle schools in the Memphis City School District. Data from three school years, 2000--2001, 2001--2002, and 2002--2003, were used. The five school level variables were school poverty rate, average class size, teacher mobility rates, percentage of teachers on permit, and percentage of teachers on waiver. A secondary purpose of this study was to examine the interrelationships among the five independent variables and the interrelationships among the four dependent variables. This was to determine whether these relationships were significant and had explanatory power in helping to identify reasons for student academic progress in the schools studied. Four hypotheses were tested using straight correlation, multiple regression, and stepwise regression. For each of the four hypotheses, at least one independent variable was found to be significantly correlated with student achievement and growth at a = .05. The percentage of teachers on permit was found to be significantly correlated with three of the four dependent variables: student achievement in math, student achievement in reading, and student growth in math. Class size was also found to be significantly correlated with math achievement. School poverty rate was the only variable found to be significantly correlated with student growth in reading. School poverty rate was also found to be significantly correlated with reading achievement. The test for relationships among the dependent variables showed that math and reading achievement were significantly correlated with each other. Schools that had higher achievement in reading were also found

  4. The Effect of a Zoo-Based Experiential Academic Science Program on High School Students' Math and Science Achievement and Perceptions of School Climate

    Science.gov (United States)

    Mulkerrin, Elizabeth A.

    The purpose of this study was to determine the effect of an 11th-grade and 12th-grade zoo-based academic high school experiential science program compared to a same school-district school-based academic high school experiential science program on students' pretest and posttest science, math, and reading achievement, and student perceptions of program relevance, rigor, and relationships. Science coursework delivery site served as the study's independent variable for the two naturally formed groups representing students (n = 18) who completed a zoo-based experiential academic high school science program and students (n = 18) who completed a school-based experiential academic high school science program. Students in the first group, a zoo-based experiential academic high school science program, completed real world, hands-on projects at the zoo while students in the second group, those students who completed a school-based experiential academic high school science program, completed real world, simulated projects in the classroom. These groups comprised the two research arms of the study. Both groups of students were selected from the same school district. The study's two dependent variables were achievement and school climate. Achievement was analyzed using norm-referenced 11th-grade pretest PLAN and 12th-grade posttest ACT test composite scores. Null hypotheses were rejected in the direction of improved test scores for both science program groups---students who completed the zoo-based experiential academic high school science program (p composite score comparison was not statistically different ( p = .93) indicating program equipoise for students enrolled in both science programs. No overall weighted grade point average score improvement was observed for students in either science group, however, null hypotheses were rejected in the direction of improved science grade point average scores for 11th-grade (p scores and school district criterion reference math and

  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. Potential programs for high sensitivity FIR spectroscopy with SPICA

    CERN Document Server

    Spinoglio, L; Saraceno, P; Spinoglio, Luigi; Giorgio, Anna Maria Di; Saraceno, Paolo

    2006-01-01

    We discuss the potential of high sensitivity mid-IR and far-IR spectroscopy to proof the physical properties of active nuclei and starburst regions of local and distant galaxies. For local galaxies, it will be possible to map the discs and ISM through the low ionization ionic lines and a variety of molecular tracers, such as OH, H2O and high-J CO. At increasing distance, most of the ionic nebular lines (typical of stars and AGNs) are shifted into the FIR, making possible to compare the observed spectra with those predicted by different evolutionary scenarios. At the very high redshift of 10-15, sensitive mid-to-far-IR spectrometers, such as those planned to be at the focal plane of the future SPICA mision, could be adequate to detect the H recombination lines excited in the HII regions around population III stars, if these stars happened to reside in large clusters of more than 10^5 members.

  7. 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.

  8. 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...

  9. 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...

  10. 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.

  11. An academic writing paradox

    DEFF Research Database (Denmark)

    Kampf, Constance Elizabeth

    A key to understanding academic writing for publication lies in the tension between the need for scholars to demonstrate originality, and the need for academic discourse communities to continue using their shared repetoire1 of concepts, vocabulary, and genre structures. This tension can be highli...

  12. Impulsivity and Academic Cheating

    Science.gov (United States)

    Anderman, Eric M.; Cupp, Pamela K.; Lane, Derek

    2009-01-01

    The authors examined the relations between academic cheating and impulsivity in a large sample of adolescents enrolled in high school health education classes. Results indicated that impulsivity predicts academic cheating for students who report extensive involvement in cheating. However, students who engage in extensive cheating are less likely…

  13. Academic Jibberish

    Science.gov (United States)

    Krashen, Stephen

    2012-01-01

    In this article, the author talks about academic jibberish. Alfie Kohn states that a great deal of academic writing is incomprehensible even to others in the same area of scholarship. Academic Jibberish may score points for the writer but does not help research or practice. The author discusses jibberish as a career strategy that impresses those…

  14. 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.

  15. 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

  16. 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.

  17. 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.

  18. Potential for mercury reduction by microbes in the high arctic.

    Science.gov (United States)

    Poulain, Alexandre J; Ní Chadhain, Sinéad M; Ariya, Parisa A; Amyot, Marc; Garcia, Edenise; Campbell, Peter G C; Zylstra, Gerben J; Barkay, Tamar

    2007-04-01

    The contamination of polar regions due to the global distribution of anthropogenic pollutants is of great concern because it leads to the bioaccumulation of toxic substances, methylmercury among them, in Arctic food chains. Here we present the first evidence that microbes in the high Arctic possess and express diverse merA genes, which specify the reduction of ionic mercury [Hg(II)] to the volatile elemental form [Hg(0)]. The sampled microbial biomass, collected from microbial mats in a coastal lagoon and from the surface of marine macroalgae, was comprised of bacteria that were most closely related to psychrophiles that had previously been described in polar environments. We used a kinetic redox model, taking into consideration photoredox reactions as well as mer-mediated reduction, to assess if the potential for Hg(II) reduction by Arctic microbes can affect the toxicity and environmental mobility of mercury in the high Arctic. Results suggested that mer-mediated Hg(II) reduction could account for most of the Hg(0) that is produced in high Arctic waters. At the surface, with only 5% metabolically active cells, up to 68% of the mercury pool was resolved by the model as biogenic Hg(0). At a greater depth, because of incident light attenuation, the significance of photoredox transformations declined and merA-mediated activity could account for up to 90% of Hg(0) production. These findings highlight the importance of microbial redox transformations in the biogeochemical cycling, and thus the toxicity and mobility, of mercury in polar regions.

  19. 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...

  20. The Relation of High School Academic Performance and Student Effort to Language Use and Recenty of Migration among Asian- and Pacific-Americans.

    Science.gov (United States)

    Dornbusch, Sanford M.; And Others

    This report, part of a larger study of the impact of family structures and processes on the social and academic performance of American high school students, focuses on Asian- and Pacific-American high school achievement. The following findings are reported: (1) Asian-Americans and Pacific-Americans exhibit very different patterns in school…

  1. The Marriage of Rigorous Academics and Technical Instruction with State-of-the-Art Technology: A Success Story of the William T. McFatter Technical High School

    Science.gov (United States)

    Blasik, Katherine; Williams, Richard G.; Johnson, Jeanette; Boegli, D. Robert

    2004-01-01

    The search for high school reform leads to William T. McFatter Technical High School in Broward County Public Schools, Florida. The purpose of this article is to highlight key information about the school and to demonstrate the success of its rigorous academic and technical instruction with state-of-the-art technology. By sharing this…

  2. The Relationship between the Quality of Teachers and Pupils Academic Performance in the STMA Junior High Schools of the Western Region of Ghana

    Science.gov (United States)

    Bonney, Ebenezer Appah; Amoah, Daniel F.; Micah, Sophia A.; Ahiamenyo, Comfort; Lemaire, Margaret B.

    2015-01-01

    The study investigated into the relationship between the quality of teachers and students' academic performance in Sekondi Takoradi Metropolitan Assembly (STMA) Junior High Schools. Descriptive survey design was used and the target population was Junior High School teachers and pupils in the metropolis. Five educational circuits in the metropolis…

  3. Practically Perfect in Every Way: Can Reframing Perfectionism for High-Achieving Undergraduates Impact Academic Resilience?

    Science.gov (United States)

    Dickinson, Mary J.; Dickinson, David A. G.

    2015-01-01

    This study focuses on a pan-disciplinary scheme that targeted high-achieving undergraduate students. Earlier research from the scheme argued that high achievers have discernibly different learning and personal development support needs. One of the most frequent self-reported challenges within this high-achieving group is perfectionism. This…

  4. The hydraulic potential of high iron bearing steel slags

    Science.gov (United States)

    Ionescu, Denisa Virginia

    The incorporation of additives to the clinker or to the raw materials stream is a common practice in cement manufacture. However, steel slag, unlike its ironmaking parent the blast furnace slag, it is not a conventional admixture for cement. Currently most steel slags are slow cooled rendering stable crystalline compounds with minor hydraulic value. Nevertheless, if steel slags would be quenched and granulated, the resulting glassy product might display increased hydration and strength development potential. The use of steel slag in cement could contribute to important savings for both cement and steelmaking industries and provide a solution for the environmental problems linked to CO2 emissions and costs of transport and disposal. The purpose of this research is to explore the thermodynamics and kinetics of steel slag hydration in an effort to produce a cement additive, or a more promising material of near Portland cement composition. An important criteria used in the assessment of slags as potential cements is the presence of a glassy phase. At present, it is not very clear why glass enhances the hydration process. However, it is known that the free energy of formation for glasses is less than for crystals so that glasses are easier to hydrate compared to crystalline materials. In the particular case of steel slag, the glassy phase would have to contain high amounts of iron. Steel slags are known to display iron levels approximately 10 times higher than Portland cement and commonly used blast furnace slags. However, the effect of high Fe2O3 levels on the setting and strengthening of cement paste is not clearly understood due to the fact that most cement additives do not present this characteristic. The present work looks at the progress made in recycling steel slag as cement additive, the complexity of the hydration process in slags, the possibilities of improving the hydration potential of slags at laboratory and industrial level, and the problems that still

  5. 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

  6. 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.

  7. 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.

  8. Effect of a Cooperative Learning Technique on the Academic Performance of High School Students in Mathematics

    Science.gov (United States)

    Idowu, Olumuyiwa Ayodeji

    2013-01-01

    Over the past 2 years, almost 45% of the students attending a local suburban high school failed Algebra 2. The purpose of this study was to compare the impact of a cooperative instructional technique (student teams-achievement divisions [STAD]) to traditional instructional methods on performance in high school algebra. Motivational and cognitive…

  9. High School Closures in New York City: Impacts on Students' Academic Outcomes, Attendance, and Mobility. Brief

    Science.gov (United States)

    Kemple, James J.

    2015-01-01

    In the first decade of the 21st century, the New York City (NYC) Department of Education implemented a set of large-scale and much debated high school reforms, which included closing large, low-performing schools, opening new small schools, and extending high school choice to students throughout the district. The school closure process was the…

  10. High School Closures in New York City: Impacts on Students' Academic Outcomes, Attendance, and Mobility. Report

    Science.gov (United States)

    Kemple, James J.

    2015-01-01

    In the first decade of the 21st century, the New York City (NYC) Department of Education implemented a set of large-scale and much debated high school reforms, which included closing large, low-performing schools, opening new small schools, and extending high school choice to students throughout the district. The school closure process was the…

  11. 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.…

  12. 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.…

  13. 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…

  14. Former High School Student-Athletes' Academic, Social, and Emotional Adjustment to Community College

    Science.gov (United States)

    Raye, Christopher M.

    2010-01-01

    The end of high school marks the time when the most number of individuals will end their participation playing sports at a competitive level. For those pursuing higher education, it has been viewed as a stressful experience for many freshmen. Former high school athletes that enter college as "students" and not…

  15. 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...

  16. 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

  17. Academic Words and Academic Capitalism

    Directory of Open Access Journals (Sweden)

    Michael Billig

    2013-03-01

    Full Text Available 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.

  18. 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…

  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. 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…

  1. Overview of Potential Clinical Applications of Hemoglobin Vesicles (HbV as Artificial Red Cells, Evidenced by Preclinical Studies of the Academic Research Consortium

    Directory of Open Access Journals (Sweden)

    Hiromi Sakai

    2017-03-01

    Full Text Available Hemoglobin (Hb is the most abundant protein in whole blood. This fact implies that the oxygen binding and releasing function of Hb is the most vital for sustaining life. All Hb is compartmentalized in red blood cells (RBCs with corpuscular Hb concentration of about 35 g/dL, covered with a thin biomembrane. In spite of its abundance, Hb sometimes shows toxicity once it is leaked from RBCs. The shielding effect of the RBC membrane is physiologically important. Based on this structural importance, we have studied artificial red cells (Hb vesicles, HbV as artificial oxygen carriers, which encapsulate a purified and concentrated Hb solution in phospholipid vesicles, mimicking the cellular structure of RBCs. Our academic research consortium has clarified the safety and efficacy of this HbV, aiming at clinical applications. Because of some superior characteristics to those of RBCs, HbV has the potential for use not only as a transfusion alternative but also for oxygen and carbon monoxide therapeutics, perfusate for transplant organs, and photosensitizer. In this review paper, such potential applications are summarized.

  2. 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)…

  3. The Effect of Music Participation on Mathematical Achievement and Overall Academic Achievement of High School Students

    Science.gov (United States)

    Cox, H. A.; Stephens, L. J.

    2006-01-01

    A study was conducted on high school students, comparing those with some music credits to those with none. No statistically significant difference was found in their mean math grade point averages (GPA) or their mean cumulative GPAs. Students were then separated into two groups based on the number of music credits. Students who had earned at least…

  4. The Effect of Music Participation on Mathematical Achievement and Overall Academic Achievement of High School Students

    Science.gov (United States)

    Cox, H. A.; Stephens, L. J.

    2006-01-01

    A study was conducted on high school students, comparing those with some music credits to those with none. No statistically significant difference was found in their mean math grade point averages (GPA) or their mean cumulative GPAs. Students were then separated into two groups based on the number of music credits. Students who had earned at least…

  5. On the Usefulness of Merton's Anomie Theory: Academic Failure and Deviance Among High School Students.

    Science.gov (United States)

    Figueira-McDonough, Josefina

    1983-01-01

    Data on tenth graders indicated that delinquency increased as grades decreased, supporting the hypothesis that failing students are under high strain. Rejection of school educational goals reinforced the inverse association between grades and delinquency. Extent of delinquency among students considered rebellious, ritualist, retreatist, or…

  6. Relationship between Web-Based Learning Time outside the Classroom and Academic Achievement in German as a Tertiary Language by the Students on Vocational High Schools

    Science.gov (United States)

    Hanbay, Orhan

    2013-01-01

    The purpose of this empirical research is to investigate the relationship between web-based learning time and academic achievement in German. 36 learners of L3 German with L1 Turkish and L2 English from Vocational High School of Kahta at Adiyaman University were the participants of this study. The empirical process of the study continued 6 weeks…

  7. School Board Member Practices in Governance, Teamwork and Board Development, and Their Sense of Effectiveness in High and Low Math Academic Achievement Districts of New York State

    Science.gov (United States)

    Siegel, Kyrie

    2009-01-01

    The purpose of this study was to examine the relationships among New York State school board member attitudes toward components of school board governance and their sense of effectiveness in high and low math academic achievement districts in New York State. The study examined board members' perceptions of their actual practices in policy…

  8. Grades--Scores--Predictions: A Study of the Efficiency of High School Grades and American College Test Scores in Predicting Academic Achievement at Montgomery College.

    Science.gov (United States)

    Gell, Robert L.; Bleil, David F.

    This report analyzes the relationship between high school grades, American College Test (ACT) scores, and first-semester college grades. Based on the Standard Research Service of the ACT program, 1,379 students in the fall 1969 freshman class of Montgomery College (Maryland) were studied. Measures of academic background used ACT scores in English,…

  9. Relationship between Social Context, Self-Efficacy, Motivation, Academic Achievement, and Intention to Drop Out of High School: A Longitudinal Study

    Science.gov (United States)

    Alivernini, Fabio; Lucidi, Fabio

    2011-01-01

    By means of a longitudinal design the authors sought to determine the role of students' self-determined motivation in reducing the intention to drop out of high school over time, while taking into account the impact of academic performance and of socioeconomic status. The effects of students' self-efficacy and perceived support from parents and…

  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. 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.

  12. 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.

  13. 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.

  14. 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.

  15. High school students' perceptions of EFL teacher control orientations and their English academic achievement.

    Science.gov (United States)

    Kiany, Gholam Reza; Shayestefar, Parvaneh

    2011-09-01

    BACKGROUND. Theories distinguish between student-initiated and teacher-initiated regulation of students' learning activities, or between strong, shared, or loose teacher control during the completion of learning tasks. Empirical validations for such distinctions are scarce, however. AIM. The present study aimed at (a) investigating students' perceptions of control behaviours exhibited by their English teachers; and (b) exploring the contribution of different types of teacher control behaviours to students' cognitive outcomes (English Achievement). SAMPLE. The sample comprised 732 English as a Foreign Language (EFL) students studying in three major fields of high school (Mathematics, Natural Science, and Humanities). The participants (16-17 years of age) were selected from third-grade classes of 27 EFL teachers working in 25 high schools of 6 main different geographical regions in the Isfahan province, Iran. METHOD. To obtain a comprehensive picture of different control types exhibited by Iranian EFL teachers, the control subscales of the two existing questionnaires, i.e., the Questionnaire on Instructional Behaviours (QIB), adapted by Den Brok et al. (2004) and the Questionnaire on Lesson Activities (QLA) used by Den Brok (2001) were merged to form the Questionnaire of Teacher Control (QTC). The development of this Persian instrument involved several steps: translation and back translation by the researchers, one expert translator, and two EFL teachers; piloting; and a final administration of the questionnaire to the student sample. With respect to the second aim of the study, data regarding students' performances on the Standardized National English Achievement Tests were gathered from local educational offices and schools. RESULTS AND CONCLUSION. Statistical analyses supported acceptable reliability and validity of the instrument. A main factor structure with three types of teacher control (strong/high, shared/mid, and loose/low) was found to underlie students

  16. Local random potentials of high differentiability to model the Landscape

    CERN Document Server

    Battefeld, Thorsten

    2015-01-01

    We generate random functions locally via a novel generalization of Dyson Brownian motion, such that the functions are in a desired differentiability class, while ensuring that the Hessian is a member of the Gaussian orthogonal ensemble (other ensembles might be chosen if desired). Potentials in such higher differentiability classes are required/desirable to model string theoretical landscapes, for instance to compute cosmological perturbations (e.g., smooth first and second derivatives for the power-spectrum) or to search for minima (e.g., suitable de Sitter vacua for our universe). Since potentials are created locally, numerical studies become feasible even if the dimension of field space is large (D ~ 100). In addition to the theoretical prescription, we provide some numerical examples to highlight properties of such potentials; concrete cosmological applications will be discussed in companion publications.

  17. 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.

  18. A flexible high potential printed battery for powering printed electronics

    Science.gov (United States)

    Gaikwad, Abhinav M.; Steingart, Daniel A.; Nga Ng, Tse; Schwartz, David E.; Whiting, Gregory L.

    2013-06-01

    Mechanically flexible arrays of alkaline electrochemical cells fabricated using stencil printing onto fibrous substrates are shown to provide the necessary performance characteristics for driving ink-jet printed circuits. Due to the dimensions and material set currently required for reliable low-temperature print processing of electronic devices, a battery potential greater than that sourced by single cells is typically needed. The developed battery is a series interconnected array of 10 low resistance Zn-MnO2 alkaline cells, giving an open circuit potential of 14 V. This flexible battery is used to power an ink-jet printed 5-stage complementary ring oscillator based on organic semiconductors.

  19. Introduction of the Thin Prep Imaging System™ (TIS: experience in a high volume academic practice

    Directory of Open Access Journals (Sweden)

    Chivukula Mamatha

    2007-02-01

    Full Text Available Abstract Objective Since the introduction of the liquid-based ThinPrep testing in 1996, most cytology laboratories across the country have adopted the liquid-based cytology (LBC for Pap test screening. Subsequent to wide-spread adoption of the ThinPrep Pap test, the ThinPrep Imaging System (TIS Cytyc Corp, Marlborough, MA was introduced to improve the accuracy and efficiency of screening interpretation. We report our initial experience with the TIS at Magee Women's Hospital. We introduced the TIS in December 2004. Methods The imager assisted Pap test results over the first 12 months (December 2004 to December 2005 of implementation were reviewed and analyzed. Our implementation protocol included each cytotechnologist manually prescreening 200 negative slides to gain experience with the imager slides and serve as a quality check for the TIS. We re-screened 3400 slides (200 slides each for 17 cytotechnologists manually which were initially determined to be negative using the TIS. 104,457 Pap tests were imaged on the TIS. 95,899 manually screened Pap tests, 12 months prior to the introduction of the TIS (December 2003–November 2004 are taken as the historic control group for our study. Results The mean ASC-US rate employing the automated imager was 8.70% [9088/104,457]. The mean LSIL detection rate was 4.22% [4409/104,457]. The imager did not miss any detectible high-grade lesions during these months, with a HSIL (+ detection rate of 0.68% in comparison to 0.60% by manual screening confirmed by follow-up biopsies. The difference is statistically significant with a p value of 0.022. The definition of false negative rate for purposes of this study is calculated as the number of false negative cases identified out of number of negatives re-screened. The TIS false negative rate was estimated at 0.012% [4/3400]. Conclusion The overall performance of the TIS in our lab appears to be highly satisfactory in terms of improving sensitivity in screening

  20. 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...... in Europe. We report on a survey of the use of streaming media in the academic community in Europe, an open source content delivery network, and a portal for announcing live streaming events to the global academic community....

  1. 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.

  2. High-temperature membrane reactors: potential and problems

    NARCIS (Netherlands)

    Saracco, G.; Neomagus, H.W.J.P.; Versteeg, G.F.; Swaaij, van W.P.M.

    1999-01-01

    The most recent literature in the field of membrane reactors is reviewed, four years after an analogous effort of ours (Saracco et al., 1994), describing shortly the potentials of these reactors, which now seem to be well established, and focusing mostly on problems towards practical exploitation. S

  3. High-temperature membrane reactors : potential and problems

    NARCIS (Netherlands)

    Saracco, G.; Neomagus, H.W.J.P.; Versteeg, G.F.; Swaaij, W.P.M. van

    1999-01-01

    The most recent literature in the field of membrane reactors is reviewed, four years after an analogous effort of ours, describing shortly the potentials of these reactors, which now seem to be well established, and focusing mostly on problems towards practical exploitation. Since then, progress has

  4. Scattering and localization properties of highly oscillatory potentials

    CERN Document Server

    Duchêne, Vincent; Weinstein, Michael I

    2012-01-01

    We investigate scattering, localization and dispersive time-decay properties for the one-dimensional Schr\\"odinger equation with a rapidly oscillating and spatially localized potential, $q_\\epsilon=q(x,x/\\epsilon)$, where $q(x,y)$ is periodic and mean zero with respect to $y$. Such potentials model a microstructured medium. Homogenization theory fails to capture the correct low-energy ($k$ small) behavior of scattering quantities, e.g. the transmission coefficient, $t^{q_\\epsilon}(k)$, as $\\epsilon$ tends to zero. We derive an effective potential well, $\\sigma^\\epsilon_{eff}(x)=-\\epsilon^2\\Lambda_{eff}(x)$, such that $t^{q_\\epsilon}(k)-t^{\\sigma^\\epsilon_{eff}}(k)$ is uniformly small on $\\mathbb{R}$ and small in any bounded subset of a suitable complex strip. Within such a bounded subset, the scaled transmission coefficient has a universal form, depending on a single parameter, which is computable from the effective potential. A consequence is that if $\\epsilon$, the scale of oscillation of the microstructure...

  5. 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. 

  6. Is All Parental "Noninvolvement" Equal? Barriers to Involvement and Their Relationship to Latino Academic Achievement

    Science.gov (United States)

    Alexander, Jamie D.; Cox, Ronald B., Jr.; Behnke, Andrew; Larzelere, Robert E.

    2017-01-01

    High parental involvement has consistently been shown to enhance academic achievement among Latino youth. Still, some youth continue to thrive academically despite low parental involvement. The Theory of Rationality suggests that the impact of even potentially negative behaviors depends on how the behavior is interpreted. To test the application…

  7. 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

  8. 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.

  9. High resolution grid of potential incoming solar radiation for Serbia

    Directory of Open Access Journals (Sweden)

    Luković Jelena

    2015-01-01

    Full Text Available Solar radiation is a key driving force for many natural processes. At the Earth’s surface solar radiation is the result of complex interactions between the atmosphere and Earth’s surface. Our study highlights the development and evaluation of a data base of potential solar radiation that is based on a digital elevation model (DEM with a resolution of 90 m over Serbia. The main aim of this paper is to map solar radiation in Serbia using DEM. This is so far the finest resolution being applied and presented using DEM. The final results of the potential direct, diffuse and total solar radiation as well as duration of insolation databases of Serbia are portrayed as thematic maps that can be communicated and shared easily through the cartographic web map-based service. [Projekat Ministarstva nauke Republike Srbije, br. III 43007, III 47014, i TR 36035

  10. High spacecraft potentials on ISEE-1 in sunlight

    Energy Technology Data Exchange (ETDEWEB)

    Whipple, E.C.; Olsen, R.C.

    1987-01-01

    Data from the two electric-field experiments and from the plasma-composition experiment on ISEE-1 show that the spacecraft charged to close to -70 V in sunlight at about 0700 UT on March 17, 1978. Data from the electron-spectrometer experiment show that there was a potential barrier of some -10 to -20 V about the spacecraft during this event. The potential barrier was effective in turning back emitted photoelectrons to the spacecraft. Potential barriers can be formed by differential charging on the spacecraft or by the presence of space charge. The stringent electrostatic cleanliness specifications imposed on ISEE made by the presence of differential charging seem unlikely, if these precautions were effective. Modeling of this event to determine if the barrier was produced by the presence of space charge, suggested that this could not explain the observed barrier. The angular shape of the distribution could be successfully modeled as a product of differential charging on the solar arrays. This implies that the conductive coating was not completely effective in preventing differential charging, and that differential charging did occur.

  11. High power CO lasers and their application potential

    Science.gov (United States)

    Maisenhaelder, F.

    1989-06-01

    Industrial applications of high-power CO lasers are examined. The characteristics specific to CO lasers are briefly reviewed, and applications where the CO laser seems to promise wavelength-related advantages over other lasers are examined. Experimentally demonstrated applications in the drilling and cutting of metals, isotope separation and photochemistry, and laser medicine are addressed, Developments in the high power range in Japan, Soviet Union, and Germany are described, and a comparison is made between high power CO and CO2 gas lasers for civil applications.

  12. 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.

  13. 30 CFR 56.12037 - Fuses in high-potential circuits.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Fuses in high-potential circuits. 56.12037... § 56.12037 Fuses in high-potential circuits. Fuse tongs or hot line tools shall be used when fuses are removed or replaced in high-potential circuits....

  14. 30 CFR 57.12037 - Fuses in high-potential circuits.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Fuses in high-potential circuits. 57.12037... Electricity Surface and Underground § 57.12037 Fuses in high-potential circuits. Fuse tongs or hotline tools, shall be used when fuses are removed or replaced in high-potential circuits....

  15. 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.

  16. 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

    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...... variation of (z) over cap and terms are retained to first-order. With shoaling enhancement, the new models obtain a comparable accuracy in linear shoaling to the original velocity formulation. General consistency relations are also derived which are convenient for verifying that the differential operators...

  17. 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…

  18. Boron nitride: A high potential support for combustion catalysts

    Energy Technology Data Exchange (ETDEWEB)

    Postole, G. [Institut de Recherches sur la Catalyse, CNRS, 69626 Villeurbanne Cedex (France); ' I.G.Murgulescu' Institute of Physical Chemistry of the Romanian Academy Spl. Independentei 202, 060041 Bucharest (Romania); Caldararu, M. [' I.G.Murgulescu' Institute of Physical Chemistry of the Romanian Academy Spl. Independentei 202, 060041 Bucharest (Romania); Ionescu, N.I. [' I.G.Murgulescu' Institute of Physical Chemistry of the Romanian Academy Spl. Independentei 202, 060041 Bucharest (Romania); Bonnetot, B. [Laboratoire des Multimateriaux et Interfaces, UMR CNRS 5615, bat Berthollet, UCB Lyon I, 69622 Villeurbanne Cedex (France); Auroux, A. [Institut de Recherches sur la Catalyse, CNRS, 69626 Villeurbanne Cedex (France)]. E-mail: auroux@catalyse.cnrs.fr; Guimon, C. [LCPM, 2 Av. President Angot, 64053 Pau Cedex 9 (France)

    2005-08-15

    High surface area BN powders have been prepared from different precursors to be used as supports for noble metal catalysts. The more suitable boron nitride powders were obtained using polytrichoroborazine, pTCB, as precursor, leading to a surface area higher than 150 m{sup 2}/g. The BN powders were characterized by XRD, XPS, TG, SEM and adsorption microcalorimetry measurements (aniline and ammonia). The preliminary results showed a remarkable stability of the BN supports, even in the presence of moisture. Palladium impregnation of the BN powders was performed using a classical method and the obtained catalysts exhibited a high dispersion with Pd particles of about 4 nm.

  19. 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.

  20. High-field plasma acceleration in a high-ionization-potential gas.

    Science.gov (United States)

    Corde, S; Adli, E; Allen, J M; An, W; Clarke, C I; Clausse, B; Clayton, C E; Delahaye, J P; Frederico, J; Gessner, S; Green, S Z; Hogan, M J; Joshi, C; Litos, M; Lu, W; Marsh, K A; Mori, W B; Vafaei-Najafabadi, N; Walz, D; Yakimenko, V

    2016-06-17

    Plasma accelerators driven by particle beams are a very promising future accelerator technology as they can sustain high accelerating fields over long distances with high energy efficiency. They rely on the excitation of a plasma wave in the wake of a drive beam. To generate the plasma, a neutral gas can be field-ionized by the head of the drive beam, in which case the distance of acceleration and energy gain can be strongly limited by head erosion. Here we overcome this limit and demonstrate that electrons in the tail of a drive beam can be accelerated by up to 27 GeV in a high-ionization-potential gas (argon), boosting their initial 20.35 GeV energy by 130%. Particle-in-cell simulations show that the argon plasma is sustaining very high electric fields, of ∼150 GV m(-1), over ∼20 cm. The results open new possibilities for the design of particle beam drivers and plasma sources.

  1. Systematic high-resolution assessment of global hydropower potential

    NARCIS (Netherlands)

    Hoes, Olivier A C; Meijer, Lourens J J; Van Der Ent, Ruud J.; 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

  2. Set criteria might have high potentials in the management of ...

    African Journals Online (AJOL)

    Esem

    Malnourished Children in Zambia: Evidence from the. Evaluation of an ... OTP suggests high feasibility to fight severe malnutrition in this setting. ... malnutrition include poverty, low education and poor access to .... performance seen in the first project year. ..... 309. 23. Shrimpton Roger Life Cycle and Gender Perspective.

  3. High-Dimensional Statistical Learning: Roots, Justifications, and Potential Machineries

    Science.gov (United States)

    Zollanvari, Amin

    2015-01-01

    High-dimensional data generally refer to data in which the number of variables is larger than the sample size. Analyzing such datasets poses great challenges for classical statistical learning because the finite-sample performance of methods developed within classical statistical learning does not live up to classical asymptotic premises in which the sample size unboundedly grows for a fixed dimensionality of observations. Much work has been done in developing mathematical–statistical techniques for analyzing high-dimensional data. Despite remarkable progress in this field, many practitioners still utilize classical methods for analyzing such datasets. This state of affairs can be attributed, in part, to a lack of knowledge and, in part, to the ready-to-use computational and statistical software packages that are well developed for classical techniques. Moreover, many scientists working in a specific field of high-dimensional statistical learning are either not aware of other existing machineries in the field or are not willing to try them out. The primary goal in this work is to bring together various machineries of high-dimensional analysis, give an overview of the important results, and present the operating conditions upon which they are grounded. When appropriate, readers are referred to relevant review articles for more information on a specific subject. PMID:27081307

  4. Assessment of potential solder candidates for high temperature applications

    DEFF Research Database (Denmark)

    of the package with different solders of different melting temperatures. High Pb containing alloys where the lead levels can be above 85% by weight, is one of the solders currently being used in this technology. Responding to market pressure i.e. need for green electronic products there is now an increasing...

  5. High-Dimensional Statistical Learning: Roots, Justifications, and Potential Machineries.

    Science.gov (United States)

    Zollanvari, Amin

    2015-01-01

    High-dimensional data generally refer to data in which the number of variables is larger than the sample size. Analyzing such datasets poses great challenges for classical statistical learning because the finite-sample performance of methods developed within classical statistical learning does not live up to classical asymptotic premises in which the sample size unboundedly grows for a fixed dimensionality of observations. Much work has been done in developing mathematical-statistical techniques for analyzing high-dimensional data. Despite remarkable progress in this field, many practitioners still utilize classical methods for analyzing such datasets. This state of affairs can be attributed, in part, to a lack of knowledge and, in part, to the ready-to-use computational and statistical software packages that are well developed for classical techniques. Moreover, many scientists working in a specific field of high-dimensional statistical learning are either not aware of other existing machineries in the field or are not willing to try them out. The primary goal in this work is to bring together various machineries of high-dimensional analysis, give an overview of the important results, and present the operating conditions upon which they are grounded. When appropriate, readers are referred to relevant review articles for more information on a specific subject.

  6. On the potential high acid deposition in northeastern China

    Science.gov (United States)

    Cao, Junji; Tie, Xuexi; Dabberdt, Walter F.; Jie, Tang; Zhao, Zhuzi; An, Zhisheng; Shen, Zhenxing; Feng, Yinchang

    2013-05-01

    is an acid deposition conundrum in China: contrary to conventional wisdom, extremely high ambient sulfate concentrations in northeastern China are not always accompanied by correspondingly high acidities. To investigate this discrepancy, data from two independent sets of in situ field measurements were analyzed along with Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY) satellite observations and Model for Ozone and Related chemical Tracers (MOZART) chemical transport model calculations. The field measurements included soluble aerosol ion concentrations and pH and particulate data from 11 cities, as well as pH measurement data from 74 sites in China. This study explores the basis for and the impacts of the large discrepancy in northeastern China between the major acidity precursors (SO2 and NOx) and measured acidity levels as indicated by pH values. There are extremely high SO2 emissions and ambient concentrations in northeastern China, while the corresponding acidity is unusually low (high pH) in this region. This is inconsistent with the usual situation where high-acidity precursor pollutants result in low pH (high acidity) values and acid rain conditions. In other regions, such as southern China and the United States, high SO2 concentrations are typically well correlated with high acidities. Using measured soluble particle measurements (including both positively and negatively charged ions), it is seen that there are high values of alkaline ions in northeastern China that play an important role in neutralizing acidity in this region. This result strongly suggests that the high alkaline concentrations, especially Ca2+, increase warm season pH values by about 0.5 in northern China, partially explaining the inconsistency between sulfate concentrations and acidity. This has a very important implication for acid rain mitigation—especially in northeastern China. However, there are additional issues pertaining to the precursor

  7. Academic dishonsty

    African Journals Online (AJOL)

    User

    Scores on performance avoidance and ... of academic rules and regulations, assessment practices, faculty, and university attended predicted .... Second, it identifies those factors that predict various ..... The higher the students' GPA, the lower.

  8. Academic Libraries

    Science.gov (United States)

    Library Journal, 1970

    1970-01-01

    Building data is given for the following academic libraries: (1) Rosary College, River Forest, Illinois; (2) Abilene Christian College, Abilene, Texas; (3) University of California, San Diego, La Jolla, California. (MF)

  9. 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, ...

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

    DEFF Research Database (Denmark)

    Thomsen, Jon Juel

    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 – an appa......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...... 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...

  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. Some potential antenna applications of high-temperature superconductors

    Science.gov (United States)

    Dinger, Robert J.

    1990-09-01

    A review of possible applications of high temperature superconductors (HTS) to antennas and antenna feed networks is presented. The frequency range of consideration is 1 MHz to 100 GHz. Three antenna application areas seem appropriate for HTS material. (1) Electrically small antennas and their matching networks: an increase in efficiency is possible for electrically short antennas, but at the expense of bandwidth. Substantial radiated power levels (on the order of kilowatts) can be handled by the best HTS material. Substantial improvement may be realized by making only the matching network of HTS material. (2) Feed and matching networks for compact arrays with enhanced directive gain (superdirective arrays): HTS material should permit such arrays to be fabricated that have high efficiency. (3) Feed networks for millimeter-wave arrays: Low-loss feed networks using HTS microstrip transmission lines give many decibels improvement in gain.

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

    Energy Technology Data Exchange (ETDEWEB)

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

    1984-09-25

    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.

  14. 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…

  15. Differences between first and fourth year medical students' interest in pursuing careers in academic medicine.

    Science.gov (United States)

    Vetter, Monica H; Carter, Mary

    2016-05-24

    The purpose of this pilot study was to assess the differences in the attitudes of first and fourth-year medical students regarding careers in academics. We also sought to identify any factors associated with an increased interest in academic medicine. A cross-sectional study was conducted during October 2013 at the University of Louisville. All first and fourth year medical students were invited to complete an online survey utilizing a survey instrument developed through literature review. Demographic data and information about background experiences were collected in addition to participants' perceptions regarding careers in academia using a 5-point Likert scale. Participants were also queried about their current interest in a career in academics and the likelihood they would pursue academic medicine. Of the 330 potential participants, 140 (42.4%) agreed to participate. Overall, fourth-years reported a higher likelihood of pursuing an academic career than first-years. Research experience, publications, distinction track interest or involvement, and belief that a career in academics would reduce salary potential were positively correlated with reported likelihood of pursuing academic medicine. Findings from this pilot study demonstrate differences in interest in academic medicine between junior and senior medical students. Additionally, several factors were associated with a high likelihood of self-reported interest in academic. Based on these findings, efforts to increase medical students' interest in academic medicine careers could be supported by providing more research and teaching opportunities or distinction track options as a structured part of the medical school curriculum.

  16. 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.

  17. Small Buccal Fat Pad Cells Have High Osteogenic Differentiation Potential.

    Science.gov (United States)

    Tsurumachi, Niina; Akita, Daisuke; Kano, Koichiro; Matsumoto, Taro; Toriumi, Taku; Kazama, Tomohiko; Oki, Yoshinao; Tamura, Yoko; Tonogi, Morio; Isokawa, Keitaro; Shimizu, Noriyoshi; Honda, Masaki

    2016-03-01

    Dedifferentiated fat (DFAT) cells derived from mature adipocytes have mesenchymal stem cells' (MSCs) characteristics. Generally, mature adipocytes are 60-110 μm in diameter; however, association between adipocyte size and dedifferentiation efficiency is still unknown. This study, therefore, investigated the dedifferentiation efficiency of adipocytes based on cell diameter. Buccal fat pad was harvested from five human donors and dissociated by collagenase digestion. After exclusion of unwanted stromal cells by centrifugation, floating adipocytes were collected and their size distribution was analyzed. The floating adipocytes were then separated into two groups depending on cell size using 40- and 100-μm nylon mesh filters: cell diameters less than 40 μm (small adipocytes: S-adipocytes) and cell diameters of 40-100 μm (large adipocytes: L-adipocytes). Finally, we evaluated the efficiency of adipocyte dedifferentiation and then characterized the resultant DFAT cells. The S-adipocytes showed a higher capacity to dedifferentiate into DFAT cells (S-DFAT cells) compared to the L-adipocytes (L-DFAT cells). The S-DFAT cells also showed a relatively higher proportion of CD146-positive cells than L-DFAT cells, and exhibited more osteogenic differentiation ability based on the alkaline phosphatase activity and amount of calcium deposition. These results suggested that the S- and L-DFAT cells had distinct characteristics, and that the higher dedifferentiation potential of S-adipocytes compared to L-adipocytes gives the former group an advantage in yielding DFAT cells.

  18. 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.

  19. Metallic Hydrogen - Potentially a High Energy Rocket Propellant

    Science.gov (United States)

    Cole, John; Silvera, Ike

    2007-01-01

    Pure metallic hydrogen is predicted to have a specific impulse (Isp) of 1700 seconds, but the reaction temperature is too high for current engine materials. Diluting metallic hydrogen with liquid hydrogen can reduce the reaction temperature to levels compatible with current material limits and still provide an Isp greater than 900 s. Metallic hydrogen has not yet been produced on earth, but experimental techniques exist that may change this situation. This paper will provide a brief description of metallic hydrogen and the status of experiments that may soon produce detectable quantities of this material in the lab. Also provided are some characteristics for diluted metallic hydrogen engines and launch vehicles.

  20. A potential implicit particle method for high-dimensional systems

    Science.gov (United States)

    Weir, B.; Miller, R. N.; Spitz, Y. H.

    2013-11-01

    This paper presents a particle method designed for high-dimensional state estimation. Instead of weighing random forecasts by their distance to given observations, the method samples an ensemble of particles around an optimal solution based on the observations (i.e., it is implicit). It differs from other implicit methods because it includes the state at the previous assimilation time as part of the optimal solution (i.e., it is a lag-1 smoother). This is accomplished through the use of a mixture model for the background distribution of the previous state. In a high-dimensional, linear, Gaussian example, the mixture-based implicit particle smoother does not collapse. Furthermore, using only a small number of particles, the implicit approach is able to detect transitions in two nonlinear, multi-dimensional generalizations of a double-well. Adding a step that trains the sampled distribution to the target distribution prevents collapse during the transitions, which are strongly nonlinear events. To produce similar estimates, other approaches require many more particles.

  1. Assessment of potential solder candidates for high temperature applications

    DEFF Research Database (Denmark)

    Multi-Chip module (MCM) technology is a specialized electronic packaging technology recently gaining momentum due to the miniaturization drive in the microelectronics industry. The step soldering approach is being employed in the MCM technology. This method is used to solder various levels...... of the package with different solders of different melting temperatures. High Pb containing alloys where the lead levels can be above 85% by weight, is one of the solders currently being used in this technology. Responding to market pressure i.e. need for green electronic products there is now an increasing...... 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...

  2. The Academic Chairperson's Handbook.

    Science.gov (United States)

    Creswell, John W.; And Others

    This book champions the importance of chairing an academic department (or division) and focuses attention on the strategies "excellent" chairs use in building a positive work environment for faculty and releasing individual faculty potential. The framework is based on human, organizational, and career development; systems theory; and interpersonal…

  3. 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,…

  4. Providing Access to Academic Content for High-School Students with Significant Intellectual Disability through Interactive Videos

    Science.gov (United States)

    Evmenova, Anya S.; Graff, Heidi J.; Behrmann, Michael M.

    2017-01-01

    There has been a slight increase in the number of studies focused on the strategies used to introduce content-based instruction to students with moderate/severe disability. However, interventions for students with significant intellectual disability (ID) are lacking adapted materials to make instruction available in all major academic areas…

  5. 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…

  6. 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,…

  7. Classroom Management, School Staff Relations, School Climate, and Academic Achievement: Testing A Model with Urban High Schools

    Science.gov (United States)

    Back, Lindsey T.; Polk, Elizabeth; Keys, Christopher B.; McMahon, Susan D.

    2016-01-01

    Urban learning environments pose distinct instructional challenges for teachers and administrators, and can lead to lower achievement compared to suburban or rural schools. Today's educational climate increasingly emphasises a need for positive academic outcomes, often measured by standardised tests, on which student educational opportunities,…

  8. The Tide Is High, but We Can Hold On: One Kindergarten Teacher's Thoughts on the Rising Tide of Academic Expectations

    Science.gov (United States)

    DeVault, Laurie

    2003-01-01

    DeVault shares strategies, enlivened with examples and anecdotes, for dealing with pressures for academic kindergarten. For example, teachers can embrace the positive elements in new methodologies; document children's meaningful activities and progress using photographs, videos, and slide shows to share with parents and administrators; share…

  9. Classroom Management, School Staff Relations, School Climate, and Academic Achievement: Testing A Model with Urban High Schools

    Science.gov (United States)

    Back, Lindsey T.; Polk, Elizabeth; Keys, Christopher B.; McMahon, Susan D.

    2016-01-01

    Urban learning environments pose distinct instructional challenges for teachers and administrators, and can lead to lower achievement compared to suburban or rural schools. Today's educational climate increasingly emphasises a need for positive academic outcomes, often measured by standardised tests, on which student educational opportunities,…

  10. The Classroom Environment: A Major Motivating Factor towards High Academic Performance of Senior Secondary School Students in South West Nigeria

    Science.gov (United States)

    Akomolafe, Comfort O.; Adesua, Veronica O.

    2015-01-01

    The paper discusses the impact of the classroom environment as a motivating factor in enhancing the academic performance of secondary school students in South West Nigeria. The study adopted descriptive survey type. The population of this study comprises all students of senior secondary schools in South West Nigeria which consist of Lagos, Ogun,…

  11. 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...

  12. Strengthening Black Students' Academic Preparedness for Higher Education.

    Science.gov (United States)

    Cargile, Samuel D.; Woods, Jacqueline E.

    1988-01-01

    Reviews trends in high school graduation and college enrollment rates, and academic preparation and performance. Offers the following strategies for improving academic preparation and performance: (1) adequate skills preparation; (2) academic student support services; and (3) positive motivation. (BJV)

  13. The analysis of high amplitude of potential oscillations near the hollow cathode of ion thruster

    Science.gov (United States)

    Qin, Yu; Xie, Kan; Guo, Ning; Zhang, Zun; Zhang, Cen; Gu, Zengjie; Zhang, Yu; Jiang, Zhaorui; Ouyang, Jiting

    2017-05-01

    The influence of gas flow, current level, and different shapes of anode on the oscillation amplitude and the characteristics of the hollow cathode discharge were investigated. The average plasma potential, temporal measurements of plasma potential, ion density, the electron temperature, as well as waveforms of plasma potential for test conditions were measured. At the same time, the time-resolved images of the plasma plume were also recorded. The results show that the potential oscillations appear at high discharge current or low flow rate. The potential oscillation boundaries, the position of maximum amplitude of plasma potential, and the position where the highest ion density was observed, were found. Both of the positions are affected by different shapes of anode configurations. This high amplitude of potential oscillations is ionization-like instabilities. The xenon ions ionized in space was analyzed for the fast potential rise and spatial dissipation of the space xenon ions was the reason for the gradual potential delay.

  14. 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

  15. 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…

  16. 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.

  17. Equation of state and interaction potential of helium under high temperatures and high densities

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    Based on the thermodynamics statistic method, the improved variational perturbation theory and the modified quantum mechanics correction model have been used to calculate the equation of state of liquid helium at pressure from 0.7 to 108 GPa. The calculation results are in good agreement with the experimental data. The EXP-6 potential (α = 13.1) can more accurately describe the interaction of helium atoms than other potentials in the scheme. Finally, a comparison is shown between our interatomic potentials and other potentials.

  18. Equation of state and interaction potential of helium under high temperatures and high densities

    Institute of Scientific and Technical Information of China (English)

    YANG JinWen; YAN YuanHong

    2009-01-01

    Based on the thermodynamics statistic method, the improved variational perturbation theory and the modified quantum mechanics correction model have been used to calculate the equation of state of liquid helium at pressure from 0.7 to 108 GPa. The calculation results are in good agreement with the experimental data. The EXP-6 potential (α=13.1) can more accurately describe the interaction of helium atoms than other potentials in the scheme. Finally, s comparison is shown between our interatomic potentials and other potentials.

  19. Potential and Kinetic Electron Emissions from HOPG Surface Irradiated by Highly Charged Xenon and Neon Ions

    Institute of Scientific and Technical Information of China (English)

    WANG Yu-Yu; ZHAO Yong-Tao; SUN Jian-Rong; LI De-Hui; QAYYUM Abdul; LI Jin-Yu; WANG Ping-Zhi; XIAO Guo-Qing

    2011-01-01

    Highly charged 129 Xeq+ (q =10-30) and 40Neq+ (q =4-8) ion-induced secondary electron emissions on the surface of highly oriented pyrolytic graphite (HOPG) are reported. The total secondary electron yield is measured as a function of the potential energy of incident ions. The experimental data are used to separate contributions of kinetic and potential electron yields. Our results show that about 4.5% and 13.2% of ion's potential energies are consumed in potential electron emission due to different Xeq+-HOPG and Neq+-HOPG combinations. A simple formula is introduced to estimate the fraction of ion's potential energy for potential electron emission.%@@ Highly charged 129 Xeq+(q =10-30) and 40Neq+(q =4-8) ion-induced secondary electron emissions on the surface of highly oriented pyrolytic graphite(HOPG) are reported.The total secondary electron yield is measured as a function of the potential energy of incident ions.The experimental data are used to separate contributions of kinetic and potential electron yields.Our results show that about 4.5% and 13.2% of ion's potential energies are consumed in potential electron emission due to different Xeq+-HOPG and Neq+-HOPG combinations.A simple formula is introduced to estimate the fraction of ion's potential energy for potential electron emission.

  20. Adolescents' Academic Expectations and Achievement.

    Science.gov (United States)

    Sanders, Christopher E.; Field, Tiffany M.; Diego, Miguel A.

    2001-01-01

    Hypothesis that mother relationships are more influential than father relationships on adolescents' academic expectations and achievement was tested with 80 high school seniors. The mother child relationship was found to be predictive of academic expectations. It suggests that the amount of time they spend together may be the contributing factor.…

  1. Parental Support for Students Who Participate in High School Athletics: An Exploration of the Perceived Influence of Parents and Its Effect on Student Self-Efficacy and Academic Success

    OpenAIRE

    To, Daniel Ming Lui

    2017-01-01

    This mixed method study explored student athletes’ perception of parental influence in their high school athletic endeavours and how this perceived influence affected their self efficacy and academic success.   The quantitative data was derived from surveys that gauged student perceived parental involvement, self efficacy and academic success in two high schools in a large metropolitan school district in British Columbia. One of the schools was a school composed primarily of students of mid t...

  2. 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...

  3. Consumer Rights in Academe.

    Science.gov (United States)

    Vago, Stephen

    1979-01-01

    Attempts in both academia and the legal arena to delineate the concepts of academic fraud and malpractice and to develop the positive implications of the student as a responsible consumer may lead to the establishment of a more appropriate student-institution relationship for today's highly diversified and demanding college learners. (Author/EB)

  4. 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...

  5. Academic Standards in Alabama

    Science.gov (United States)

    A+ Education Partnership, 2014

    2014-01-01

    Education policymakers and educators in Alabama are committed to improving the state's public education system to ensure that students gain the knowledge and skills they need to graduate from high school ready for real life. The state is on the path to implementing higher academic standards--the College and Career Ready Standards--which lay a…

  6. 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.

  7. Unfulfilled Potential: High-Achieving Minority Students and the High School Achievement Gap in Math

    Science.gov (United States)

    Kotok, Stephen

    2017-01-01

    This study uses multilevel modeling to examine a subset of the highest performing 9th graders and explores the extent that achievement gaps in math widen for high performing African American and Latino students and their high performing White and Asian peers during high school. Using nationally representative data from the High School Longitudinal…

  8. 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…

  9. The teachers and their “place” for high school students. Findings from research on academic paths of school success

    Directory of Open Access Journals (Sweden)

    Dolo Molina Galvañ

    2013-06-01

    Full Text Available Several studies about school success confirm that a positive teacherstudent relationship can favor a strong engagement to school life. Such studies emphasize the fact that teachers contribute to school success when they combine both a demanding and a supportive attitude towards their students, such attitude arising from a sense of value and trust in their students’ capabilities. This paper examines the different meaning that successful secondary education students give to their academic experience and defines some of the specific features of teaching which help to create a positive school-student relationship. 

  10. Research on the Relationship between Middle and High level Academic Stress and Academic Achievement----Case Study of Graduate Students%中高程度学业压力与学业成就的相关性研究——以硕士研究生为例

    Institute of Scientific and Technical Information of China (English)

    宋之杰; 张婕

    2012-01-01

      By random sampling, 476 graduate students were investigated with Academic Stress, Learning Burnout and Academic Achievement Questionnaire. Then this paper analyses 276 questionnaires which bear middle and high level academic stress. The result explains graduate students who bear middle and high level academic stress shows over middle level learning burnout and below the middle level academic achievement. External expectations pressure, thesis pressure have a significant negative forecast on their academic achievement,learning prospects pressure have no effect on graduate achievement. Learning burnout plays an intermediary role between middle and high level academic stress and academic achievement.%  采用自编的《硕士研究生学业压力问卷》、《硕士研究生学习倦怠问卷》及《硕士研究生学业成就感问卷》对河北某国家重点大学的476名硕士进行调查,并从中抽取247份压力处于中等程度及以上的问卷进行分析。研究结果表明,学业压力处于中高程度的硕士生表现出较高的学习倦怠和较低水平的学业成就;学业压力中的外界期望压力和科研任务压力对硕士生的学业成就有显著的负向预测作用;学习前景压力对学业成就的影响不显著;学习倦怠在中高程度学业压力和学业成就之间起着显著的中介作用。

  11. 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...

  12. 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

  13. 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

  14. 高中生在线学术信息搜索策略研究%Research on Senior High School Students' Strategies of Online Academic Information Search

    Institute of Scientific and Technical Information of China (English)

    李志明

    2016-01-01

    Senior high school students' online academic informa-tion search involves many variable factors, such as students' self-regulated learning and online information evaluation stan-dard. Through a questionnaire survey on 286 senior high school students in Zhangye City, this research attempts to research the role of self-regulated learning and online information evaluation standard in senior high school students' online academic infor-mation search, aiming to find the possible structural relationship among self-regulated learning, online information evaluation standard and online information search strategies.%高中生在线学术信息搜索涉及多种可变的因素,比如,学生自我调节学习、在线信息评估标准等。本研究通对张掖市的286名高中生进行问卷调查,尝试研究自我调节学习、在线信息评估标准等在高中生在线学术信息搜索中的作用,试图发现自我调节学习、在线信息评估标准和在线信息搜索策略之间可能存在的结构关系。

  15. Ego Development and Adolescent Academic Achievement

    Science.gov (United States)

    Bursik, Krisanne; Martin, Timothy A.

    2006-01-01

    This study investigated ego developmental differences in adolescent academic orientations and academic achievement. A sample of 142 male and female high school students completed the Washington University Sentence Completion Test and self-report measures assessing academic locus of control, learning orientation (LO), and grade orientation (GO).…

  16. ACADEMIC PERFORMANCE THROUGH COMMUNICATION - COMMUNICATIONORIENTED MOTIVATION

    Directory of Open Access Journals (Sweden)

    LUMINI A RADU

    2011-04-01

    Full Text Available Researchers’ focus on academic performance brings forth the “quality of academic life” and it’s highly positive correlations with “students’ welfare” as well as with certain personality features such as “self-respect” and “positive affectivity” alongside negative correlations such as „academic stress” and “negative affectivity”

  17. ACADEMIC PERFORMANCE THROUGH COMMUNICATION - COMMUNICATIONORIENTED MOTIVATION

    OpenAIRE

    LUMINI A RADU

    2011-01-01

    Researchers’ focus on academic performance brings forth the “quality of academic life” and it’s highly positive correlations with “students’ welfare” as well as with certain personality features such as “self-respect” and “positive affectivity” alongside negative correlations such as „academic stress” and “negative affectivity”

  18. Latino Adolescents' Academic Success: The Role of Discrimination, Academic Motivation, and Gender

    Science.gov (United States)

    Alfaro, Edna C.; Umana-Taylor, Adriana J.; Gonzales-Backen, Melinda A.; Bamaca, Mayra Y.; Zeiders, Katharine H.

    2009-01-01

    Guided by the academic resilience perspective, the current longitudinal study examined whether academic motivation mediated the relation between Latino adolescents' (N = 221) experiences with discrimination and their academic success. The potential moderating role of gender was also examined. Using multiple group analysis in structural equation…

  19. 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.

  20. 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.

  1. Extent of soil with high phosphorus retention potential in the United States Pacific Northwest

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This spatial data set was created by the U.S. Geological Survey (USGS) to represent the extent of soils with high phosphorus retention potential in the Pacific...

  2. Extent of soil with very high phosphorus retention potential in the United States Pacific Northwest

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This spatial data set was created by the U.S. Geological Survey (USGS) to represent the extent of soils with very high levels of phosphorus retention potential in...

  3. 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

  4. 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/.

  5. High School Academic Proficiency Test Reform:Values,Risks and Countermeasures%高中学业水平考试改革:价值、风险与应对

    Institute of Scientific and Technical Information of China (English)

    苏若菊; 刘丽

    2015-01-01

    高中学业水平考试改革已步入深水区,在预防学生偏科、赋予学生考试选择权、完善教学评价体系、完善高考录取体系等方面展现出特有的时代价值.但同时高中学业水平考试又隐藏着考试时间跨度长、成绩等级化、与高考本质交叉、实施过程差异多样等潜在风险.应深入把握高中学业水平考试本质,准确定位其功能;深化高中学业水平考试过程改革,加强统一标准建设;深化体制建设,加强宏观管理;建立多元监督问责机制,在全面把握风险的基础上,推动高中学业水平考试改革有效展开.%High school academic proficiency test reform has entered deep water area.It demonstrates specif-ic values of the times in the following aspects :take precautions against unbalanced learning and give students the power of choice and improve teaching evaluation system as well as college admission system. But in the mean time,there are potential risks such as long time span of the test,examination results grad-ing,two tests cross each other basically,and diversity in process.We should grasp the essence of high school academic proficiency test,pinpoint test functions,deepen testing process reform,intensify the de-velopment of unified standard,expedite institution building,strengthen macro-management,and establish multiple supervision and accountability mechanism.On the basis of comprehensively identifying risks,we are able to push high school academic proficiency reform forward effectively.

  6. The effect of matching learning styles and instructional strategies on academic achievement and student enjoyment of science lessons in a high school general chemistry course

    Science.gov (United States)

    Fundi, Shaaban Kitindi

    This study explored the matching hypothesis by examining the effect of matching students' learning style preferences with teachers' instructional strategies on students' academic performance and lesson enjoyment in a high school general chemistry course. To achieve the study aims, the researcher utilized a single-participant study design with a baseline phase and four treatment phases. Determination of students' learning style preferences involved using the Visual, Audial, Read/Write, and Kinesthetic (VARK) Learning Style Inventory. During the one-week baseline phase, students received instruction using regular instructional strategies, followed by four treatment phases: visual intervention, audial intervention, read/write intervention, and a kinesthetic intervention. Each intervention phase lasted one week. During each phase, the researcher measured academic achievement using three teacher-created quiz scores. Student enjoyment was measured using the Test of Science-Related Attitudes (TOSRA). A total of 14 students completed the VARK Questionnaire. Of these, eight students (2 boys and 6 girls) exhibited a multimodal learning style were subsequently excluded from study participation. An additional student was excluded due to excessive absenteeism, leaving five students who completed all phases of the study. Results indicated that matching students' learning style preferences with teachers' instructional strategies did not improve students' academic performance as measured by teacher-created quizzes. However, weekly switching of the instructional strategies did improve student enjoyment of chemistry lessons. Student enjoyment increased for all participants in all intervention phases regardless of whether or not instruction matched students' learning style preferences compared to baseline phase. The results of this study do not support the matching hypothesis. The students in this study, preferred to learn with multiple teaching strategies. Alternating instructional

  7. 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

  8. Effects of high-fidelity patient simulation led clinical reasoning course: Focused on nursing core competencies, problem solving, and academic self-efficacy.

    Science.gov (United States)

    Lee, JuHee; Lee, Yoonju; Lee, Senah; Bae, Juyeon

    2016-01-01

    To examine the effects of high-fidelity patient simulation (HFPS) led clinical reasoning course among undergraduate nursing students. A quasi-experimental study of non-equivalent control group pretest-post test design was applied. A total of 49 senior nursing students participated in this study. The experimental group consisted of the students who took the "clinical reasoning" course (n = 23) while the control group consisted of students who did not (n = 26). Self-administered scales including the nursing core competencies, problem solving, academic self-efficacy, and Kolb learning style inventory were analyzed quantitatively using SPSS version 20.0. Data analysis was conducted using one-way ancova due to a significant difference in nursing core competencies between the experimental group and control group. There was a significant improvement in nursing core competencies in the experimental group (F = 7.747, P = 0.008). The scores of problem solving and academic self-efficacy were higher in the experimental group after the HFPS led clinical reasoning course without statistical difference. There is a need for the development of effective instructional methods to improve learning outcomes in nursing education. Future research is needed related to simulation education as well as management strategies so that learning outcomes can be achieved within different students' learning style. © 2015 The Authors. Japan Journal of Nursing Science © 2015 Japan Academy of Nursing Science.

  9. Achievement motivation, anxiety and academic success in first year Master of Nursing students.

    Science.gov (United States)

    McEwan, L; Goldenberg, D

    1999-07-01

    Forty-one first semester master level nursing students from three Canadian universities participated in this descriptive correlational study to identify the influence of achievement motivation and anxiety on their academic success. Academic success was determined by their first semester grade point average (GPA). Participants had high achieving tendencies (M = 73.5) and academic ability (M = 81.9), supporting Atkinson's (1957, 1964) achievement motivation theory which was used as the framework. While state anxiety was negatively correlated, trait anxiety was the only valid predictor of academic success. Academic ability and inherent anxiety had a greater potential for predicting students who would succeed, which has implications for nurse educators, administrators and researchers. However, the need to assess both cognitive and non-cognitive variables to determine master level nursing students' ability to succeed is recommended.

  10. 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

  11. Adolescents’ academic achievement and life satisfaction: the role of parents’ education

    OpenAIRE

    Crede, Julia; Wirthwein, Linda; McElvany, Nele; Steinmayr, Ricarda

    2015-01-01

    Drawing on the background of positive psychology, there has only recently been a focus on adolescents’ life satisfaction (LS) in the context of education. Studies examining the relationship between adolescents’ academic achievement and LS have shown conflicting results and the reasons are not fully understood. The present study investigated the role of parents’ education as a potential moderator of the relationship between adolescents’ academic achievement and LS. A sample of German high scho...

  12. Academic dropout or academic success: a model for prediction.

    Science.gov (United States)

    Kegel-Flom, P

    1986-09-01

    Why do some students who qualify for admission to optometry school become academic dropouts while others succeed? This question was addressed in a study which compared the admission records of 21 academic dropouts from three classes at the University of Houston College of Optometry (UHCO) with 269 retained students. Academic dropouts were found to have significantly lower preoptometry grades, lower Optometry College Admission Test (OCAT) scores, attended less competitive (i.e., less selective) undergraduate institutions, scored lower on the California Psychological Inventory (CPI), and were older than retained students. When these differentiating admission variables, excepting age, were applied to a new entering class, prediction of subsequent academic dismissal or serious academic difficulty was highly accurate. However, it was found that such prediction must take into account not only areas of weakness, i.e., academic and psychological factors which place a student at risk, but also areas of strength which give the student an advantage. For all students, regardless of age, sex, or ethnic origin, it was the ratio of "advantage" factors to "risk" factors which gave the most valid prediction of academic success or failure.

  13. 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

  14. Highly deformable and highly fluid vesicles as potential drug delivery systems: theoretical and practical considerations

    Science.gov (United States)

    Romero, Eder Lilia; Morilla, Maria Jose

    2013-01-01

    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. PMID:23986634

  15. Students’ academic self perception

    OpenAIRE

    Chevalier, Arnaud; Gibbons, Steve; Thorpe, Andy; Hoskins, Sherria

    2007-01-01

    Participation rates in higher education differ persistently between some groups in society. Using two British datasets we investigate whether this gap is rooted in students’ misperception of their own and other’s ability, thereby increasing the expected costs to studying. Among high school pupils, we find that pupils with a more positive view of their academic abilities are more likely to expect to continue to higher education even after controlling for observable measures of ability and stud...

  16. Electrostatic Potential in High-Temperature Superconducting Cuprates: Extended Ginzburg-Landau Theory

    Directory of Open Access Journals (Sweden)

    Madhuparna Karmakar

    2011-01-01

    Full Text Available The electrostatic potential and the associated charge distribution in the vortices of high- superconductors involving mixed symmetry state of the order parameters have been studied. The work is carried out in the framework of an extended Ginzburg-Landau (GL theory involving the Gorter-Casimir two-fluid model and Bardeen's extension of GL theory applied to the high- superconductors. The properties are calculated using the material parameters relevant for the high- cuprate YBCO.

  17. 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.

  18. Can Parental Expectations Compensate for the Negative Effects of Low-Birth Weight on Academic Achievement? A Cross-Sectional Analysis of the National PEELS Data

    Science.gov (United States)

    Cormier-Zenon, Dolores E.

    2012-01-01

    The purpose of this study is to examine the potential impact parental expectations have on the academic achievement of children born with low-birth weight to inform educational leaders. Literature on levels of children born with birth weights as low as 1 LB to as high as 9 LBS were evaluated based on: birth weight, academic achievement, and…

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

    DEFF Research Database (Denmark)

    Thisgaard, Malene Warming; 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 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...

  20. High hydrostatic pressure processing: a method having high success potential in pollen protein extraction

    Science.gov (United States)

    Murat Altuner, Ergin; Çeter, Talip; Alpas, Hami

    2012-06-01

    Even a single peptide that is present in the pollen wall and cytoplasm could cause pollen allergy. To produce skin-prick test kits, the first step is the extraction of these molecules. In this study, Cedrus atlantica pollens were subjected to 220 and 330 MPa for 10 and 30 min in order to extract these molecules. After high hydrostatic pressure processing (HHPP), the total amounts of proteins (TAPs) are measured and compared with the results of the conventional extraction method (CEM). As a result, the TAPs extracted by HHPP is 18.0210 μ g/mL at 220 MPa for 10 min, 22.5770 μ g/mL at 220 MPa for 30 min, 23.3810 μ g/mL at 330 MPa for 10 min and 25.9270 μ g/mL at 330 MPa for 30 min, while this is 1.9460 μ g/mL in 24 h by the CEM. In addition to these results, visual pollen deformation and eruption, pollen wall and surface damage have also been observed.

  1. SYNTHESIS AND PROPERTIES OF HIGHLY OIL-ABSORPTIVE RESIN WITH HYDROXY ETHYLACRYLATE AS POTENTIAL CROSSLINKING AGENT

    Institute of Scientific and Technical Information of China (English)

    FENG Yan; XIAO Changfa

    2006-01-01

    A concept of potential crosslinking agent was introduced into the synthesizing process of highly oil-absorptive resin that is traditionally prepared by single chemical crosslinking. The resin was heated after manufactured to obtain three-dimension network structure. The effects of potential crosslinking agent and the crosslinking conditions on the absorptive properties of resin were studied.The results showed that hydroxyl ethylacrylate got satisfied results, and the resin with it had good oil absorbency and oil retention.

  2. Field induced gradient simulations: a high throughput method for computing chemical potentials in multicomponent systems.

    Science.gov (United States)

    Mehrotra, Anuja Seth; Puri, Sanjay; Khakhar, D V

    2012-04-07

    We present a simulation method for direct computation of chemical potentials in multicomponent systems. The method involves application of a field to generate spatial gradients in the species number densities at equilibrium, from which the chemical potential of each species is theoretically estimated. A single simulation yields results over a range of thermodynamic states, as in high throughput experiments, and the method remains computationally efficient even at high number densities since it does not involve particle insertion at high densities. We illustrate the method by Monte Carlo simulations of binary hard sphere mixtures of particles with different sizes in a gravitational field. The results of the gradient Monte Carlo method are found to be in good agreement with chemical potentials computed using the classical Widom particle insertion method for spatially uniform systems.

  3. 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.

  4. Growth of binary Ni–Fe films: Characterisations at low and high potential levels

    Energy Technology Data Exchange (ETDEWEB)

    Kuru, Hilal, E-mail: htopcu@balikesir.edu.tr [Physics Department, Science and Literature Faculty, Balikesir Universitesi, Fen Edebiyat Fakultesi, Fizik Bolumu, Cagis Yerleskesi, 10145 Balikesir (Turkey); Kockar, Hakan, E-mail: hkockar@balikesir.edu.tr [Physics Department, Science and Literature Faculty, Balikesir Universitesi, Fen Edebiyat Fakultesi, Fizik Bolumu, Cagis Yerleskesi, 10145 Balikesir (Turkey); Alper, Mursel, E-mail: malper@uludag.edu.tr [Physics Department, Science and Literature Faculty, Uludag Universitesi, Fen Edebiyat Fakultesi, Fizik Bolumu, Gorukle, 16059 Bursa (Turkey); Karaagac, Oznur, E-mail: karaagac@balikesir.edu.tr [Physics Department, Science and Literature Faculty, Balikesir Universitesi, Fen Edebiyat Fakultesi, Fizik Bolumu, Cagis Yerleskesi, 10145 Balikesir (Turkey)

    2015-03-01

    Binary Ni–Fe films relating their magnetoresistance and magnetic properties with crystal structure and surface morphology, and the corresponding film composition were investigated at low and high deposition potentials. Based on the results obtained from a cyclic voltammetry curve, a potential region between −1.3 V and −1.8 V was selected, and the current–time transients were recorded to control the proper film growth. The Ni–Fe films were potentiostatically electrodeposited on polycrystalline titanium substrates at low (−1.3 V) and high (−1.8 V) deposition potential. The data from the energy dispersive X-ray spectrometry and the inductively coupled plasma atomic emission spectroscopy demonstrated that the Ni and Fe content in the films varied as the potential changed. The magnetotransport properties and magnetic characteristics studied by a vibrating sample magnetometer (VSM) were observed to be affected by the deposition potentials. All films were also noted to exhibit anisotropic magnetoresistance behaviour. At low potential, the magnitude of the longitudinal magnetoresistance (LMR) was high (3.93%) and that of the transverse magnetoresistance (TMR) was low (3.49%) while for the film at high potential the LMR (2.76%) and the TMR (3.66%) magnitudes were obtained. Magnetization measurements by VSM revealed that the saturation magnetization, M{sub s} was 779 emu/cm{sup 3} and saturation field, H{sub s} was 142 Oe at low potential while for the films deposited at high potential the M{sub s} and H{sub s} were 749 emu/cm{sup 3} and 262 Oe, respectively. However, the coercivities in the films were found to be around 4.5 Oe, regardless of the potential. Also, the magnetic easy axis was found to be in the film plane for all samples. The structural analysis of the films was carried out using the X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. To XRD analysis, all films have a strong (111) texture of face-centred cubic structure and

  5. Academic nightmares: Predatory publishing.

    Science.gov (United States)

    Van Nuland, Sonya E; Rogers, Kem A

    2017-07-01

    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 models, poor quality control, and minimal overall transparency victimize those researchers with limited academic experience and pave the way for low-quality articles that threaten the foundation of evidence-based research. Understanding how to identify these predatory journals requires thorough due diligence on the part of the submitting authors, and a commitment by reputable publishers, institutions, and researchers to publicly identify these predators and eliminate them as a threat to the careers of young scientists seeking to disseminate their work in scholarly journals. Anat Sci Educ 10: 392-394. © 2016 American Association of Anatomists. © 2016 American Association of Anatomists.

  6. Reforestation in a high-CO2 world -- Higher mitigation potential than expected, lower adaptation potential than hoped for

    Science.gov (United States)

    Sonntag, Sebastian; Pongratz, Julia; Reick, Christian H.; Schmidt, Hauke

    2016-06-01

    We assess the potential and possible consequences for the global climate of a strong reforestation scenario for this century. We perform model experiments using the Max Planck Institute Earth System Model (MPI-ESM), forced by fossil-fuel CO2 emissions according to the high-emission scenario Representative Concentration Pathway (RCP) 8.5, but using land use transitions according to RCP4.5, which assumes strong reforestation. Thereby, we isolate the land use change effects of the RCPs from those of other anthropogenic forcings. We find that by 2100 atmospheric CO2 is reduced by 85 ppm in the reforestation model experiment compared to the reference RCP8.5 model experiment. This reduction is higher than previous estimates and is due to increased forest cover in combination with climate and CO2 feedbacks. We find that reforestation leads to global annual mean temperatures being lower by 0.27 K in 2100. We find large annual mean warming reductions in sparsely populated areas, whereas reductions in temperature extremes are also large in densely populated areas.

  7. 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.

  8. High School Closures in New York City: Impacts on Students' Academic Outcomes, Attendance, and Mobility. Technical Appendices

    Science.gov (United States)

    Kemple, James J.

    2015-01-01

    In the first decade of the 21st century, the New York City (NYC) Department of Education implemented a set of large-scale and much debated high school reforms, which included closing large, low-performing schools, opening new small schools, and extending high school choice to students throughout the district. The school closure process was the…

  9. 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.

  10. Controlling the occurrence of power overshoot by adapting microbial fuel cells to high anode potentials.

    Science.gov (United States)

    Zhu, Xiuping; Tokash, Justin C; Hong, Yiying; Logan, Bruce E

    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/m(2). Power overshoot was observed in MFCs incubated at -0.46 V, but not those acclimated at more positive potentials, indicating that bacterial activity was significantly influenced by the anode acclimation potential. CV results further indicated that power overshoot of MFCs incubated at the lowest anode potential was associated with 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.

  11. 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.

  12. 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....... Nonetheless, little research has focused on this group. We investigate if personal characteristics such as age, gender, marital status and seniority affect work outcomes such as work adjustment, work performance, work effectiveness, job satisfaction and time to proficiency. This is done by using data which...... were collected from 428 self-initiated expatriate academics from 60 countries employed in 35 universities in five northern European countries. Results confirm that there are differences in terms of work outcomes among the different types of self-initiated expatriate academics, especially regarding...

  13. High glucose potentiates L-FABP mediated fibrate induction of PPARα in mouse hepatocytes.

    Science.gov (United States)

    Petrescu, Anca D; McIntosh, Avery L; Storey, Stephen M; Huang, Huan; Martin, Gregory G; Landrock, Danilo; Kier, Ann B; Schroeder, Friedhelm

    2013-08-01

    Although liver fatty acid binding protein (L-FABP) binds fibrates and PPARα in vitro and enhances fibrate induction of PPARα in transformed cells, the functional significance of these findings is unclear, especially in normal hepatocytes. Studies with cultured primary mouse hepatocytes show that: 1) At physiological (6mM) glucose, fibrates (bezafibrate, fenofibrate) only weakly activated PPARα transcription of genes in LCFA β-oxidation; 2) High (11-20mM) glucose, but not maltose (osmotic control), significantly potentiated fibrate-induction of mRNA of these and other PPARα target genes to increase LCFA β-oxidation. These effects were associated with fibrate-mediated redistribution of L-FABP into nuclei-an effect prolonged by high glucose-but not with increased de novo fatty acid synthesis from glucose; 3) Potentiation of bezafibrate action by high glucose required an intact L-FABP/PPARα signaling pathway as shown with L-FABP null, PPARα null, PPARα inhibitor-treated WT, or PPARα-specific fenofibrate-treated WT hepatocytes. High glucose alone in the absence of fibrate was ineffective. Thus, high glucose potentiation of PPARα occurred through FABP/PPARα rather than indirectly through other PPARs or glucose induced signaling pathways. These data indicated L-FABP's importance in fibrate-induction of hepatic PPARα LCFA β-oxidative genes, especially in the context of high glucose levels.

  14. Screening differentially expressed genes in mouse hepatocarcinoma ascites cell line with high potential of lymphatic metastasis

    Institute of Scientific and Technical Information of China (English)

    Xiao-Nan Cui; Jian-Wu Tang; Li Hou; Bo Song; Li Li; Ji-Wei Liu

    2005-01-01

    AIM: To screen genes differentially expressed in mouse hepatocarcinoma ascites cell line with high potential of lymphatic metastasis.METHODS: A subtracted cDNA library of mouse hepatocarcinoma cell line with high potential of lymphatic metastatic Hca-F and its synogenetic cell line Hca-P with a low metastatic potential was constructed by suppression subtracted hybridization(SSH) method. The screened clones of the subtracted library were sequenced and GeneBank homology search was performed.RESULTS: Fourteen differentially expressed cDNA fragments of Hca-F were obtained with two novel genes.CONCLUSION: SSH is a useful technique to detect differentially expressioned genes and an effective method to clone novel genes.

  15. On Extraction of Chemical Potentials of Quarks from Particle Transverse Momentum Spectra in High Energy Collisions

    Directory of Open Access Journals (Sweden)

    Hong Zhao

    2015-01-01

    Full Text Available We present two methods to extract the chemical potentials of quarks in high energy collisions. The first method is based on the ratios of negatively/positively charged particles, and the temperatures extracted from the transverse momentum spectra of related hadrons are needed. The second method is based on the chemical potentials of some particles, and we also need the transverse momentum spectra of related hadrons. To extract the quark chemical potentials, we would like to propose experimental collaborations to measure simultaneously not only the transverse momentum spectra of p-, p, K-, K+, π-, and π+, but also those of D-, D+, B-, and B+ (even those of Δ++, Δ-, and Ω- in high energy nuclear collisions.

  16. Prediction of the P-leaching potential of arable soils in areas with high livestock densities

    Institute of Scientific and Technical Information of China (English)

    WERNER Wilfried; TRIMBORN Manfred; PIHL Uwe

    2006-01-01

    Due to long-term positive P-balances many surface soils in areas with high livestock density in Germany are oversupplied with available P, creating a potential for vertical P losses by leaching. In extensive studies to characterize the endangering of ground water to P pollution by chemical soil parameters it is shown that the available P content and the P concentration of the soil solution in the deeper soil layers, as indicators of the P-leaching potential, cannot be satisfactorily predicted from the available P content of the topsoils. The P equilibrium concentration in the soil solution directly above ground water table or the pipe drainage system highly depends on the relative saturation of the P-sorption capacity in this layer. A saturation index of <20% normally corresponds with Pequilibrium concentrations of <0.2 mg P/L. Phytoremediation may reduce the P leaching potential of P-enriched soils only over a very long period.

  17. Monte Carlo methods for estimating depletion potentials in highly size-asymmetrical hard sphere mixtures.

    Science.gov (United States)

    Ashton, D J; Sánchez-Gil, V; Wilding, N B

    2013-10-14

    We investigate Monte Carlo simulation strategies for determining the effective ("depletion") potential between a pair of hard spheres immersed in a dense sea of much smaller hard spheres. Two routes to the depletion potential are considered. The first is based on estimates of the insertion probability of one big sphere in the presence of the other; we describe and compare three such methods. The second route exploits collective (cluster) updating to sample the depletion potential as a function of the separation of the big particles; we describe two such methods. For both routes, we find that the sampling efficiency at high densities of small particles can be enhanced considerably by exploiting "geometrical shortcuts" that focus the computational effort on a subset of small particles. All the methods we describe are readily extendable to particles interacting via arbitrary potentials.

  18. An evaluation method of hydrocarbon generating potential of highly mature and over-mature marine carbonate

    Institute of Scientific and Technical Information of China (English)

    程克明; 王兆云

    1997-01-01

    How to restore the residual organic carbon and residual hydrocarbon-generating potential is discussed based on the hydrocarbon degradability of source rock. The results indicate there is linear function relationship between the restoring coefficient of residual organic carbon (Kc) and the vitrinite reflectance (Ro% ) of various kinds of source rock, but the relationship is secondary functional between the restoring coefficient of residual hydrocarbon-generating potential (Ks) and the vitrinite reflectance (R0%). It is pointed out that Kc= (1 - Dresidual)/(1-Dprimary), Xs=Kc (Dprimary/Dresidual). The restoration of residual organic carbon and hydrocarbon-gen era ting potential of the Cambrian and Ordovician highly mature marine carbonate in the Tarim Basin and North China region shows that the lower limit value of hydrocarbon generating potential and the organic matter abundance of carbonate source rock are basically the same as that of clastic rock. The technical difficulty in hydrocarbon generating eva

  19. Motivating Factors and Potential Deterrents to Blood Donation in High School Aged Blood Donors

    Directory of Open Access Journals (Sweden)

    Rachel Finck

    2016-01-01

    Full Text Available Background. To ensure an adequate supply of blood, collection centers must design campaigns that successfully recruit and maintain an active donor pool. Understanding factors that motivate and deter individuals from donating may help centers develop targeted recruitment campaigns. These factors among high school aged blood donors have not yet been fully investigated. Study Design and Methods. A voluntary, anonymous survey was administered to student donors at high school mobile blood drives. The survey instrument asked the students to rate several potential motivating factors in their importance in the decision to donate blood and several potential deterring factors in their future decision whether or not to donate blood again. The survey also asked the students to rate the desirability of several potential incentives. Results. Motivating factors that reflected prosocial, empathetic, and altruistic thoughts and beliefs were rated highly by students. Pain from phlebotomy was most commonly chosen as potential deterrent. Movie tickets and cookies/snacks at the drive were rated as the most attractive incentives. Conclusion. High school aged blood donors are similar to other donor groups in their expressed motives for donating blood. This group may be unique in the factors that deter them from donating and in their preferences for different incentives.

  20. 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 evaluate...

  1. Structural integrity and potential failure modes of hanford high-level waste tanks

    Energy Technology Data Exchange (ETDEWEB)

    Han, F.C.

    1996-09-30

    Structural Integrity of the Hanford High-Level Waste Tanks were evaluated based on the existing Design and Analysis Documents. All tank structures were found adequate for the normal operating and seismic loads. Potential failure modes of the tanks were assessed by engineering interpretation and extrapolation of the existing engineering documents.

  2. 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.…

  3. High glucose-induced oxidative stress increases transient receptor potential channel expression in human monocytes

    DEFF Research Database (Denmark)

    Wuensch, Tilo; Thilo, Florian; Krueger, Katharina;

    2010-01-01

    Transient receptor potential (TRP) channel-induced cation influx activates human monocytes, which play an important role in the pathogenesis of atherosclerosis. In the present study, we investigated the effects of high glucose-induced oxidative stress on TRP channel expression in human monocytes....

  4. Developing High-Potential Youth Program: A Return on Investment Study for U.S. Programs

    Science.gov (United States)

    Millett, Catherine M.; Nettles, Michael T.

    2009-01-01

    When The Goldman Sachs Foundation (GSF) made its first strategic social investment decision in 1999, it took note of one of Goldman Sachs' core corporate values: People are its greatest asset. The program's objective was--and is--clear and simple: to increase the number of high-potential young adults from historically underrepresented backgrounds…

  5. Meeting the Linguistic Needs of High-Potential English Language Learners: What Teachers Need to Know

    Science.gov (United States)

    Pereira, Nielsen; de Oliveira, Luciana C.

    2015-01-01

    The population of English language learners (ELLs) in general education classrooms has been increasing over the last few decades. However, ELLs are still underrepresented in gifted programs, and teachers struggle to provide these students with adequate educational experiences. What do teachers need to know about high-potential ELLs? What…

  6. Are "High Potential" Executives Capable of Building Learning-Oriented Organisations? Reflections on the French Case

    Science.gov (United States)

    Belet, Daniel

    2007-01-01

    Purpose: The author's interest in learning organisation development leads him to examine large French companies' practices regarding "high potential" executives policies and to question their selection and development processes and their capabilities to develop learning oriented organisations.The author also tries to explain why most large French…

  7. 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...

  8. 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...

  9. Meeting the Linguistic Needs of High-Potential English Language Learners: What Teachers Need to Know

    Science.gov (United States)

    Pereira, Nielsen; de Oliveira, Luciana C.

    2015-01-01

    The population of English language learners (ELLs) in general education classrooms has been increasing over the last few decades. However, ELLs are still underrepresented in gifted programs, and teachers struggle to provide these students with adequate educational experiences. What do teachers need to know about high-potential ELLs? What…

  10. Achievement Motivation Training for Potential High School Dropouts. Achievement Motivation Development Project Working Paper Number 4.

    Science.gov (United States)

    McClelland, David C.

    This pilot project sought to determine if instruction in achievement motivation would help potential dropouts to complete their schooling. Subjects were tenth grade students in a suburban Boston high school. A one-week residential course during winter and spring vacations was taken by one group of six boys and a second group of four. Equated…

  11. 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;…

  12. The Effect of Track Changes on the Development of Academic Self-Concept in High School: A Dynamic Test of the Big-Fish-Little-Pond Effect

    Science.gov (United States)

    Wouters, Sofie; De Fraine, Bieke; Colpin, Hilde; Van Damme, Jan; Verschueren, Karine

    2012-01-01

    Academic self-concept has received a great deal of attention in recent educational research because it mediates many other educational outcomes. Therefore, it is important to find out how students' academic self-concept develops. We examined the big-fish-little-pond effect (BFLPE) dynamically by investigating the effect of track changes in high…

  13. 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…

  14. (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…

  15. (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…

  16. 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…

  17. 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…

  18. 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.

  19. 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.

  20. 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.

  1. 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…

  2. Parent Involvement in the Academic Adjustment of Latino Middle and High School Youth: Teacher Expectations and School Belonging as Mediators

    Science.gov (United States)

    Kuperminc, Gabriel P.; Darnell, Adam J.; Alvarez-Jimenez, Anabel

    2008-01-01

    A path model based in a theory of social capital was tested with Latino middle school (n = 195, 58% female, average 13.8 years of age) and high school students (n = 129, 64% female, average 16.8 years of age). Most participants (77%) were immigrants (predominantly from Mexico). Questionnaires assessed student perceptions of parent involvement,…

  3. An Academic Survey Concerning High School and University Students' Attitudes and Approaches to Problem Solving in Chemistry

    Science.gov (United States)

    Duran, Muharrem

    2016-01-01

    The aim of this study is to reveal differences between attitudes and approaches of students from different types of high school and the first grade of university towards problem solving in chemistry. For this purpose, the scale originally developed by Mason and Singh (2010) to measure students' attitude and approaches towards problem solving in…

  4. Parent Involvement in the Academic Adjustment of Latino Middle and High School Youth: Teacher Expectations and School Belonging as Mediators

    Science.gov (United States)

    Kuperminc, Gabriel P.; Darnell, Adam J.; Alvarez-Jimenez, Anabel

    2008-01-01

    A path model based in a theory of social capital was tested with Latino middle school (n = 195, 58% female, average 13.8 years of age) and high school students (n = 129, 64% female, average 16.8 years of age). Most participants (77%) were immigrants (predominantly from Mexico). Questionnaires assessed student perceptions of parent involvement,…

  5. High School Students' Academic Causal Attributions in the Cultural-Political Context of the Arab School System in Israel

    Science.gov (United States)

    Kaplan, Avi; Yahia, Yasmin

    2017-01-01

    While motivation is commonly interpreted as an individual student's characteristic, motivational perceptions and beliefs, such as causal attributions of success and failure, are embedded in cultural meanings and contextual practices. The current study aimed to investigate causal attributions among Arab high school students in Israel and to…

  6. 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…

  7. What Does it Mean to Be African American? Constructions of Race and Academic Identity in an Urban Public High School

    Science.gov (United States)

    Nasir, Na'ilah Suad; McLaughlin, Milbrey W.; Jones, Amina

    2009-01-01

    In this article, the authors explore variation in the meanings of racial identity for African American students in a predominantly African American urban high school. They view racial identity as both related to membership in a racial group and as fluid and reconstructed in the local school setting. They draw on both survey data and observational…

  8. Experimental Effects of Word Generation on Vocabulary, Academic Language, and Perspective Taking in High Poverty Middle Schools

    Science.gov (United States)

    Jones, Stephanie M.; Kim, James; LaRusso, Maria; Kim, Ha Yeon; Selman, Robert; Uccelli, Paola; Barnes, Sophie; Donovan, Suzanne; Snow, Catherine

    2016-01-01

    Word Generation (WG) is a research-based vocabulary program for middle school students designed to teach words through language arts, math, science, and social studies classes. The program consists of weekly units that introduce 5 high-utility target words through brief passages designed to spark active examination and discussion of contemporary…

  9. High sensitivity to mass-ratio variation in deep molecular potentials

    CERN Document Server

    Hanneke, D; Lane, D A

    2016-01-01

    Molecular vibrational transitions are prime candidates for model-independent searches for variation of the proton-to-electron mass ratio. Searches for present-day variation achieve highest sensitivity with deep molecular potentials. We identify several high-sensitivity transitions in the deeply bound ${\\rm O}_2^+$ molecular ion. These transitions are electric-dipole forbidden and thus have narrow linewidths. The most sensitive transitions take advantage of an accidental degeneracy between vibrational states in different electronic potentials. We suggest experimentally feasible routes to a measurement with uncertainty exceeding current limits on present-day variation in $m_p/m_e$.

  10. 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

  11. Stress factors affecting academic physicians at a university hospital.

    Science.gov (United States)

    Lindfors, Sara; Eintrei, Christina; Alexanderson, Kristina

    2009-01-01

    Research is limited regarding occupational stress in academic physicians; professionals whose work situation includes the three areas of clinical practice, research, and teaching. The aim of this study was to gain knowledge of factors experienced as stressful by academic physicians employed by a university hospital. A questionnaire assessing the frequency and intensity of 36 potentially stressful factors was sent to all 157 academic physicians who were employed at the Linköping University Hospital, Sweden. The response rate was 77%. Both a high frequency and intensity of stress was experienced by 66% of the academic physicians in relation to "time pressure" and by almost 50% in connection with both "find time for research" and having "conflict of interest between different work assignments". Moreover, physicians in the higher age group and those who had attained a higher academic position experienced less stress. The female participants experienced more stress than the males due to gender-related problems and to variables associated with relationships at work. More knowledge is needed to determine the consequences of this finding and to identify coping strategies used for handling such stress.

  12. High-speed digital video imaging system to record cardiac action potentials

    Science.gov (United States)

    Mishima, Akira; Arafune, Tatsuhiko; Masamune, Ken; Sakuma, Ichiro; Dohi, Takeyoshi; Shibata, Nitaro; Honjo, Haruo; Kodama, Itsuo

    2001-01-01

    A new digital video imaging system was developed and its performance was evaluated to analyze the spiral wave dynamics during polymorphic ventricular tachycardia (PVT) with high spatio-temporal resolution (1 ms, 0.1 mm). The epicardial surface of isolated rabbit heart stained with di- 4-ANEPPS was illuminated by 72 high-power bluish-green light emitting diodes (BGLED: (lambda) 0 500 nm, 10mw). The emitted fluorescence image (256x256 pixels) passing through a long-pass filter ((lambda) c 660nm) was monitored by a high-speed digital video camera recorder (FASTCAM-Ultima- UV3, Photron) at 1125 fps. The data stored in DRAM were processed by PC for background subtraction. 2D images of excitation wave and single-pixel action potentials at target sites during PVT induced by DC shocks (S2: 10 ms, 20 V) were displayed for 4.5 s. The wave form quality is high enough to observe phase 0 upstroke and to identify repolarization timing. Membrane potentials at the center of spiral were characterized by double-peak or oscillatory depolarization. Singular points during PVT were obtained from isophase mapping. Our new digital video-BGLED system has an advantage over previous ones for more accurate and longer time action potential analysis during spiral wave reentry.

  13. 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.

  14. 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 iron, 22 reduced molybdate and seven oxidized arsenite. Based on next generation sequencing, 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 iron-reducing bacteria were identified with low abundance, yet relatively high diversity. The presence of a population of metabolically-diverse, metal-resistant micro-organisms within the 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.

  15. The Influence of Academic Self-efficacy and Learning Strategy to Academic Performance of High School Students: The Selection of Equivalent Model and the Analysis of Mediation%学业自我效能感与学习策略对高二学生学业成绩的影响:SEM的建立和等值模型的选择

    Institute of Scientific and Technical Information of China (English)

    张田; 傅安球

    2011-01-01

    为探索学业自我效能感和学习策略对中学生学业成绩的影响,通过问卷法调查了555名高中学生.并通过等值模型的探讨和结构方程模型的建立来考察在学业自我效能感对学业成绩的影响中,学习策略所起的作用。结果显示:(1)不同性别和学科学生在使用学习策略上存在显著差异;(2)在学业行为效能感对学业成绩的影响中,浅表策略和元认知策略起到中介作用;(3)在学业能力效能感对学业成绩的影响中.元认知策略起到完全中介作用。研究得出结论:在学业自我效能感的各个维度对学业成绩的影响中,不同的学习策略起到不同程度的中介作用。%To investigate the relationship between academic self-efficacy, learning strategy and academic performance, 555 high school students were investigated by questionnaires, and equivalent model and structural equation model analysis were used to analyse the data. The results of the study were as follows: (1)The using of learning strategy had significant differences between gender and between social science and nature science; (2)Superficial strategy and metacognitive strategy mediated the relationship between academic activity self-efficacy and academic performance; (3)Metacognitive strategy could fully mediate the relationship between academic ability self-efficacy and academic performance. Based on the results, we concluded that in the relationship between academic self-efficacy and academic performance, different dimensions of learning strategy mediated the relationship in different ways.

  16. 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...... with thermodynamic properties that depend on the distance from the solid surface (or position in the porous space). The description involves the two kinds of interactions present in the adsorbed fluid, i.e. the fluid-fluid and fluid-solid interactions. accounted for by means of an equation of state (Eo......S) and interaction potential functions, respectively. This makes it possible to generate the different MPTA models by combination of the relevant EoS/potentials. In the present work, the simplified perturbed-chain statistical associating fluid theory (sPC-SAFT) EoS is used for the thermodynamic description of both...

  17. 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.

  18. On the Potential Origins of the High Stability of Reconstructed Ancestral Proteins.

    Science.gov (United States)

    Trudeau, Devin L; Kaltenbach, Miriam; Tawfik, Dan S

    2016-10-01

    Ancestral reconstruction provides instrumental insights regarding the biochemical and biophysical characteristics of past proteins. A striking observation relates to the remarkably high thermostability of reconstructed ancestors. The latter has been linked to high environmental temperatures in the Precambrian era, the era relating to most reconstructed proteins. We found that inferred ancestors of the serum paraoxonase (PON) enzyme family, including the mammalian ancestor, exhibit dramatically increased thermostabilities compared with the extant, human enzyme (up to 30 °C higher melting temperature). However, the environmental temperature at the time of emergence of mammals is presumed to be similar to the present one. Additionally, the mammalian PON ancestor has superior folding properties (kinetic stability)-unlike the extant mammalian PONs, it expresses in E. coli in a soluble and functional form, and at a high yield. We discuss two potential origins of this unexpectedly high stability. First, ancestral stability may be overestimated by a "consensus effect," whereby replacing amino acids that are rare in contemporary sequences with the amino acid most common in the family increases protein stability. Comparison to other reconstructed ancestors indicates that the consensus effect may bias some but not all reconstructions. Second, we note that high stability may relate to factors other than high environmental temperature such as oxidative stress or high radiation levels. Foremost, intrinsic factors such as high rates of genetic mutations and/or of transcriptional and translational errors, and less efficient protein quality control systems, may underlie the high kinetic and thermodynamic stability of past proteins.

  19. Effective mutations in a high redox potential laccase from Pleurotus ostreatus.

    Science.gov (United States)

    Macellaro, Gemma; Baratto, Maria Camilla; Piscitelli, Alessandra; Pezzella, Cinzia; Fabrizi de Biani, Fabrizia; Palmese, Angelo; Piumi, François; Record, Eric; Basosi, Riccardo; Sannia, Giovanni

    2014-06-01

    Since the first report on a laccase, there has been a notable development in the interest towards this class of enzymes, highlighted from the number of scientific papers and patents about them. At the same time, interest in exploiting laccases-mainly high redox potential-for various functions has been growing exponentially over the last 10 years. Despite decades of work, the molecular determinants of the redox potential are far to be fully understood. For this reason, interest in tuning laccase redox potential to provide more efficient catalysts has been growing since the last years. The work herein described takes advantage of the filamentous fungus Aspergillus niger as host for the heterologous production of the high redox potential laccase POXA1b from Pleurotus ostreatus and of one of its in vitro selected variants (1H6C). The system herein developed allowed to obtain a production level of 35,000 U/L (583.3 μkat/L) for POXA1b and 60,000 U/L (1,000 μkat/L) for 1H6C, corresponding to 13 and 20 mg/L for POXA1b and 1H6C, respectively. The characterised proteins exhibit very similar characteristics, with some exceptions regarding catalytic behaviour, stability and spectro-electrochemical properties. Remarkably, the 1H6C variant shows a higher redox potential with respect to POXA1b. Furthermore, the spectro-electrochemical results obtained for 1H6C make it tempting to claim that we spectro-electrochemically determined the redox potential of the 1H6C T2 site, which has not been studied in any detail by spectro-electrochemistry yet.

  20. High-concentration zeta potential measurements using light-scattering techniques.

    Science.gov (United States)

    Kaszuba, Michael; Corbett, Jason; Watson, Fraser Mcneil; Jones, Andrew

    2010-09-28

    Zeta potential is the key parameter that controls electrostatic interactions in particle dispersions. Laser Doppler electrophoresis is an accepted method for the measurement of particle electrophoretic mobility and hence zeta potential of dispersions of colloidal size materials. Traditionally, samples measured by this technique have to be optically transparent. Therefore, depending upon the size and optical properties of the particles, many samples will be too concentrated and will require dilution. The ability to measure samples at or close to their neat concentration would be desirable as it would minimize any changes in the zeta potential of the sample owing to dilution. However, the ability to measure turbid samples using light-scattering techniques presents a number of challenges. This paper discusses electrophoretic mobility measurements made on turbid samples at high concentration using a novel cell with reduced path length. Results are presented on two different sample types, titanium dioxide and a polyurethane dispersion, as a function of sample concentration. For both of the sample types studied, the electrophoretic mobility results show a gradual decrease as the sample concentration increases and the possible reasons for these observations are discussed. Further, a comparison of the data against theoretical models is presented and discussed. Conclusions and recommendations are made from the zeta potential values obtained at high concentrations.

  1. The high density region of QCD in a large mass and chemical potential model

    CERN Document Server

    De Pietri, R; Seiler, E; Stamatescu, I O; Pietri, Roberto De; Feo, Alessandra; Seiler, Erhard; Stamatescu, Ion-Olimpiu

    2005-01-01

    We study the high density region of QCD within an effective model obtained in the frame of the hopping parameter expansion. The model still acknowledges the sign problem peculiar to non-zero chemical potential, but it permits the development of refined algorithms which ensure a good overlap of the Monte Carlo ensemble with the true one. We review the main features of the model, including the most explicit form of the resumed expansion, and present calculations concerning the dependence of various observables on the chemical potential and on the temperature, in particular of the charge density and the diquark susceptibility, which may be used to characterize the various phases expected at high baryonic density.

  2. Spirodiclofen Derivatives as Highly Potential Acaricides:Synthesis, Structure and Bioactivity

    Institute of Scientific and Technical Information of China (English)

    FENG Xian-guo; XU Liang-zhong; KONG Fan-rui; LI Hong-xin; YIN Rui-feng

    2011-01-01

    A series of new compounds as highly potential acaricides was synthesized based on the structure of spirodiclofen.Their structures were identified by 1H NMR spectroscopy and element analysis.The bioassay indicated that most of the compounds exhibited excellent acaricidal activities,what's more,the bioactivities of some new compounds were better than that of the commercial spirodiclofen at a concentration of 20 μg/mL.The relationship between structure and biological activity was also discussed.

  3. Proton-Proton On Shell Optical Potential at High Energies and the Grayness Effect

    CERN Document Server

    Arriola, Enrique Ruiz

    2016-01-01

    We analyze the usefulness of the optical potential as suggested by the double spectral Mandelstam representation at very high energies, such as in the proton-proton scattering at ISR and the LHC. Its particular meaning regarding the interpretation of the scattering data up to the maximum available measured energies is discussed. Our analysis suggests the onset of gray nucleons at the LHC and precludes convolution models at the attometer scale.

  4. 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.

  5. High-mobility capacitively-induced two-dimensional electrons in a lateral superlattice potential

    Science.gov (United States)

    Lu, T. M.; Laroche, D.; Huang, S.-H.; Chuang, Y.; Li, J.-Y.; Liu, C. W.

    2016-01-01

    In the presence of a lateral periodic potential modulation, two-dimensional electrons may exhibit interesting phenomena, such as a graphene-like energy-momentum dispersion, Bloch oscillations, or the Hofstadter butterfly band structure. To create a sufficiently strong potential modulation using conventional semiconductor heterostructures, aggressive device processing is often required, unfortunately resulting in strong disorder that masks the sought-after effects. Here, we report a novel fabrication process flow for imposing a strong lateral potential modulation onto a capacitively induced two-dimensional electron system, while preserving the host material quality. Using this process flow, the electron density in a patterned Si/SiGe heterostructure can be tuned over a wide range, from 4.4 × 1010 cm−2 to 1.8 × 1011 cm−2, with a peak mobility of 6.4 × 105 cm2/V·s. The wide density tunability and high electron mobility allow us to observe sequential emergence of commensurability oscillations as the density, the mobility, and in turn the mean free path, increase. Magnetic-field-periodic quantum oscillations associated with various closed orbits also emerge sequentially with increasing density. We show that, from the density dependence of the quantum oscillations, one can directly extract the steepness of the imposed superlattice potential. This result is then compared to a conventional lateral superlattice model potential. PMID:26865160

  6. 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.

  7. Tetranitroacetimidic acid: a high oxygen oxidizer and potential replacement for ammonium perchlorate.

    Science.gov (United States)

    Vo, Thao T; Parrish, Damon A; Shreeve, Jean'ne M

    2014-08-27

    Considerable work has been focused on developing replacements for ammonium perchlorate (AP), a primary choice for solid rocket and missile propellants, due to environmental concerns resulting from the release of perchlorate into groundwater systems [corrected]. Additionally, the generation of hydrochloric acid contributes to high concentrations of acid rain and to ozone layer depletion. En route to synthesizing salts that contain cationic FOX-7, a novel, high oxygen-containing oxidizer, tetranitroacetimidic acid (TNAA), has been synthesized and fully characterized. The properties of TNAA were found to be exceptional, with a calculated specific impulse exceeding that of AP, leading to its high potential as a replacement for AP. TNAA can be synthesized easily in a one-step process by the nitration of FOX-7 in high yield (>93%). The synthesis, properties, and chemical reactivity of TNAA have been examined.

  8. Electrokinetic mixing at high zeta potentials: ionic size effects on cross stream diffusion.

    Science.gov (United States)

    Ahmadian Yazdi, Alireza; Sadeghi, Arman; Saidi, Mohammad Hassan

    2015-03-15

    The electrokinetic phenomena at high zeta potentials may show several unique features which are not normally observed. One of these features is the ionic size (steric) effect associated with the solutions of high ionic concentration. In the present work, attention is given to the influences of finite ionic size on the cross stream diffusion process in an electrokinetically actuated Y-shaped micromixer. The method consists of a finite difference based numerical approach for non-uniform grid which is applied to the dimensionless form of the governing equations, including the modified Poisson-Boltzmann equation. The results reveal that, neglecting the ionic size at high zeta potentials gives rise to the overestimation of the mixing length, because the steric effects retard liquid flow, thereby enhancing the mixing efficiency. The importance of steric effects is found to be more intense for channels of smaller width to height ratio. It is also observed that, in sharp contrast to the conditions that the ions are treated as point charges, increasing the zeta potential improves the cross stream diffusion when incorporating the ionic size. Moreover, increasing the EDL thickness decreases the mixing length, whereas the opposite is true for the channel aspect ratio.

  9. Innovation and Academic Skills

    DEFF Research Database (Denmark)

    Nielsen, René Nesgaard

    2006-01-01

    Literature on skill-biased technological and organisational change has established that these kinds of changes are positively related with demand for highly skilled (and highly educated) labour. Most of the literature is based on the hypothesis that technological and organisational change cause...... a larger demand for highly skilled labour (see e.g. Abramovitz and David 1996; Bresnahan 1999), but it has also been argued that ample supply of highly skilled labour may affect technological change (Acemoglu 2002), and that the relationship is likely to be complementary and interdependent (Caroli and Van...... will be written on an assumption of a positive relationship between innovation and use of academic skills subject to a continuing importance of practical know-how and non-formal learning processes. Confronting this assumption with Danish empirics, interesting research questions arise. Danish empirics thus show...

  10. Potential Dependence of the conductivity of Poly(3-Methylthiophene) in Liquid So2/Electrolyte: A Finite Potential Window of High Conductivity

    Science.gov (United States)

    1988-08-15

    conductivity is somewhat less. The observation of lowered conductivity in highly oxidized polythiophenes is consistent with theoretical expectations1 𔄂 and...TITLE (include Secunty lafication) Potential Dependence of the Conductivity of Poly(3-methylthiophen in Liquid S02/Electrolyte: A Finite Potential...Window of High Conductivity 12. PERSONAL AUTHOR(S) David Ofer and Mark S. Wrighton 13a. TYPE OF REPORT 13b. TIME COVERED 114. DAT F Ofg𔃻 (Y%6onth, Oay

  11. High School Graduation Rates of Potential First Generation College Students: A Qualitative Case Study

    Science.gov (United States)

    Dansby, Jacqueline O.; Dansby-Giles, Gloria

    2011-01-01

    Educational reform in the United States has focused on several factors such as academic achievement, performance on standardized test scores, dropout rates, the mandate of the No Child Left Behind (NCLB) Act of 2001 (Dee and Jacob, 2010) and other changes. A new call for a broader and bolder strategy for educational reform that focused on…

  12. Introduction of the Thin Prep Imaging System™ (TIS: Experience in a high volume academic practice

    Directory of Open Access Journals (Sweden)

    Chivukula Mamatha

    2007-01-01

    Full Text Available Objective: Since the introduction of the liquid-based ThinPrep testing in 1996, most cytology laboratories across the country have adopted the liquid-based cytology (LBC for Pap test screening. Subsequent to wide-spread adoption of the ThinPrep Pap test, the ThinPrep Imaging System (TIS Cytyc Corp, Marlborough, MA was introduced to improve the accuracy and efficiency of screening interpretation. We report our initial experience with the TIS at Magee Women′s Hospital. We introduced the TIS in December 2004. Methods: The imager assisted Pap test results over the first 12 months (December 2004 to December 2005 of implementation were reviewed and analyzed. Our implementation protocol included each cytotechnologist manually prescreening 200 negative slides to gain experience with the imager slides and serve as a quality check for the TIS. We re-screened 3400 slides (200 slides each for 17 cytotechnologists manually which were initially determined to be negative using the TIS. 104,457 Pap tests were imaged on the TIS. 95,899 manually screened Pap tests, 12 months prior to the introduction of the TIS (December 2003-November 2004 are taken as the historic control group for our study. Results :The mean ASC-US rate employing the automated imager was 8.70% [9088/104,457]. The mean LSIL detection rate was 4.22% [4409/104,457]. The imager did not miss any detectible high-grade lesions during these months, with a HSIL (+ detection rate of 0.68% in comparison to 0.60% by manual screening confirmed by follow-up biopsies. The difference is statistically significant with a p value of 0.022 . The definition of false negative rate for purposes of this study is calculated as the number of false negative cases identified out of number of negatives re-screened. The TIS false negative rate was estimated at 0.012% [4/3400]. Conclusion :The overall performance of the TIS in our lab appears to be highly satisfactory in terms of improving sensitivity in screening

  13. Multibeam Advisory Committee (MAC) - Three Years of Working Towards the Consistent Acquisition of High Quality Multibeam Echosounder Data Across the US Academic Fleet

    Science.gov (United States)

    Johnson, P. D.; Beaudoin, J. D.; Ferrini, V. L.

    2014-12-01

    evaluate BIST data including TX and RX array impedance and noise assessment. While these tools and techniques were developed specifically to address the needs of collecting high quality MBES data for ships of the US Academic fleet, they can and have been used for other MBES systems outside of the fleet.

  14. A Multidimensional Scaling of College Students' Perceptions of Academic Dishonesty

    Science.gov (United States)

    Schmelkin, Liora Pedhazur; Gilbert, Kim; Spencer, Karin J.; Pincus, Holly S.; Silva, Rebecca

    2008-01-01

    Academic dishonesty rates have remained alarmingly high. Various causes and correlates of academic dishonesty have been explored, including such factors as situational and environmental contributors as well as individual differences. Due to the high level of ambiguity inherent in the definition of academic dishonesty, it becomes important to…

  15. A Multidimensional Scaling of College Students' Perceptions of Academic Dishonesty

    Science.gov (United States)

    Schmelkin, Liora Pedhazur; Gilbert, Kim; Spencer, Karin J.; Pincus, Holly S.; Silva, Rebecca

    2008-01-01

    Academic dishonesty rates have remained alarmingly high. Various causes and correlates of academic dishonesty have been explored, including such factors as situational and environmental contributors as well as individual differences. Due to the high level of ambiguity inherent in the definition of academic dishonesty, it becomes important to…

  16. Marijuana Use from Middle to High School: Co-occurring Problem Behaviors, Teacher-Rated Academic Skills and Sixth-Grade Predictors.

    Science.gov (United States)

    Ehrenreich, Heidi; Nahapetyan, Lusine; Orpinas, Pamela; Song, Xiao

    2015-10-01

    Rising marijuana use and its lowered perceived risk among adolescents highlight the importance of examining patterns of marijuana use over time. This study identified trajectories of marijuana use among adolescents followed from middle through high school, characterized these by co-occurring problem behaviors and teacher-rated academic skills (study skills, attention problems, and learning problems), and tested sixth-grade predictors of trajectory membership. The sample consisted of a randomly-selected cohort of 619 students assessed annually from sixth to twelfth grade. Using group-based modeling, we identified four trajectories of marijuana use: Abstainer (65.6%), Sporadic (13.9%), Experimental (11.5%), and Increasing (9.0%). Compared to Abstainers, students in the Sporadic, Experimental and Increasing trajectories reported significantly more co-occurring problem behaviors of alcohol use, cigarette smoking, and physical aggression. Sporadic and Experimental users reported significantly less smoking and physical aggression, but not alcohol use, than Increasing users. Teachers consistently rated Abstainers as having better study skills and less attention and learning problems than the three marijuana use groups. Compared to Abstainers, the odds of dropping out of high school was at least 2.7 times higher for students in the marijuana use trajectories. Dropout rates did not vary significantly between marijuana use groups. In sixth grade, being male, cigarette smoking, physical aggression and attention problems increased the odds of being in the marijuana use trajectories. Multiple indicators--student self-reports, teacher ratings and high school dropout records--showed that marijuana was not an isolated or benign event in the life of adolescents but part of an overall problem behavior syndrome.

  17. Treatment Outcomes and Prognostic Factors of Pulmonary Metastasectomy for Bone and Soft Tissue Sarcoma: a High Volume Academic Institution Experience

    Directory of Open Access Journals (Sweden)

    Xiaozheng KANG

    2016-05-01

    Full Text Available Background and objective The bone and soft tissue sarcoma can metastasize to distant sites, most commonly the lungs. Some cases can be cured by radical metastasectomy, but its role, indication and prognostic factors remains controversial. The rarity of the disease combined with the diverse number of subtypes can make bone and soft tissue sarcomas very difficult to study. There are few randomized control studies or international high volume results, and such reports in China are seldom seen. The aim of this study is to investigate surgical treatment outcomes and prognostic factors of pulmonary metastatic bone and soft tissue sarcoma patients. Methods From January 2007 to December 2015, patients with bone and soft tissue sarcoma who underwent multimodality therapy including definitive surgery for the primary lesion and at least one pulmonary metastasectomy were enrolled in the retrospective study. All the relevant clinical variables were collected, and then statistically analyzed and interpreted with the aid of univariate and multivariate Cox proportional hazard regression method. Results Totally 155 pulmonary metastasectomies in 144 patients were analyzed. Incomplete R0 resection, a less than 1-year interval from a previous surgery, more than three detected nodules; and the summed maximum diameter of more than 45 mm for pulmonary metastases were independent prognostic indicators by multivariate analysis. Conclusion We suggest that metastatic bone and soft tissue sarcoma patients can benefit most from aggressive surgical intervention of pulmonary metastasectomy. Its prognostic factors include R0 resection, a longer interval from a previous surgery, smaller total number and total size of pulmonary metastases.

  18. 365 Self-Concept and Secondary School Students' Academic ...

    African Journals Online (AJOL)

    FIRST LADY

    2011-01-18

    Jan 18, 2011 ... on physics students' academic achievement in secondary schools. The study ... that students with high self-concept achieved academically higher than those with low .... Chemistry Students Learning Outcomes. Purkey, W. W. ...

  19. 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.

  20. 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.