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Sample records for achieving behavioral regularity

  1. Regularity and irreversibility of weekly travel behavior

    R. Kitamura; A.I.J.M. van der Hoorn

    1987-01-01

    Dynamic characteristics of travel behavior are analyzed in this paper using weekly travel diaries from two waves of panel surveys conducted six months apart. An analysis of activity engagement indicates the presence of significant regularity in weekly activity participation between the two waves. Th

  2. Black hole mimickers: Regular versus singular behavior

    Black hole mimickers are possible alternatives to black holes; they would look observationally almost like black holes but would have no horizon. The properties in the near-horizon region where gravity is strong can be quite different for both types of objects, but at infinity it could be difficult to discern black holes from their mimickers. To disentangle this possible confusion, we examine the near-horizon properties, and their connection with far away asymptotic properties, of some candidates to black mimickers. We study spherically symmetric uncharged or charged but nonextremal objects, as well as spherically symmetric charged extremal objects. Within the uncharged or charged but nonextremal black hole mimickers, we study nonextremal ε-wormholes on the threshold of the formation of an event horizon, of which a subclass are called black foils, and gravastars. Within the charged extremal black hole mimickers we study extremal ε-wormholes on the threshold of the formation of an event horizon, quasi-black holes, and wormholes on the basis of quasi-black holes from Bonnor stars. We elucidate whether or not the objects belonging to these two classes remain regular in the near-horizon limit. The requirement of full regularity, i.e., finite curvature and absence of naked behavior, up to an arbitrary neighborhood of the gravitational radius of the object enables one to rule out potential mimickers in most of the cases. A list ranking the best black hole mimickers up to the worst, both nonextremal and extremal, is as follows: wormholes on the basis of extremal black holes or on the basis of quasi-black holes, quasi-black holes, wormholes on the basis of nonextremal black holes (black foils), and gravastars. Since in observational astrophysics it is difficult to find extremal configurations (the best mimickers in the ranking), whereas nonextremal configurations are really bad mimickers, the task of distinguishing black holes from their mimickers seems to be less

  3. The Regular Education Initiative: Patent Medicine for Behavioral Disorders.

    Braaten, Sheldon; And Others

    1988-01-01

    Implications of the regular education initiative for behaviorally disordered students are examined in the context of integration and right to treatment. These students are underserved, often cannot be appropriately served in regular classrooms, are not welcomed by most regular classroom teachers, and have treatment rights the initiative does not…

  4. Scaling behavior of regularized bosonic strings

    Ambjørn, J.; Makeenko, Y.

    2016-03-01

    We implement a proper-time UV regularization of the Nambu-Goto string, introducing an independent metric tensor and the corresponding Lagrange multiplier, and treating them in the mean-field approximation justified for long strings and/or when the dimension of space-time is large. We compute the regularized determinant of the 2D Laplacian for the closed string winding around a compact dimension, obtaining in this way the effective action, whose minimization determines the energy of the string ground state in the mean-field approximation. We discuss the existence of two scaling limits when the cutoff is taken to infinity. One scaling limit reproduces the results obtained by the hypercubic regularization of the Nambu-Goto string as well as by the use of the dynamical triangulation regularization of the Polyakov string. The other scaling limit reproduces the results obtained by canonical quantization of the Nambu-Goto string.

  5. Patterns of Buyer Behavior: Regularities, Models, and Extensions

    Mark Uncles; Andrew Ehrenberg; Kathy Hammond

    1995-01-01

    Many empirical regularities in the buying behavior of consumers have been linked together into a comprehensive model, the Dirichlet. In this paper we list some of the well-established regularities, show how they are theoretically intertwined, and illustrate how this approach to modeling can assist the marketing analyst.

  6. Regular and stochastic behavior of Parkinsonian pathological tremor signals

    Yulmetyev, R M; Panischev, O Y; Hänggi, P; Timashev, S F; Vstovsky, G V; Yulmetyev, Renat M.; Demin, Sergey A.; Panischev, Oleg Yu.; H\\"anggi, Peter; Timashev, Serge F.; Vstovsky, Grigoriy V.

    2006-01-01

    Regular and stochastic behavior in the time series of Parkinsonian pathological tremor velocity is studied on the basis of the statistical theory of discrete non-Markov stochastic processes and flicker-noise spectroscopy. We have developed a new method of analyzing and diagnosing Parkinson's disease (PD) by taking into consideration discreteness, fluctuations, long- and short-range correlations, regular and stochastic behavior, Markov and non-Markov effects and dynamic alternation of relaxation modes in the initial time signals. The spectrum of the statistical non-Markovity parameter reflects Markovity and non-Markovity in the initial time series of tremor. The relaxation and kinetic parameters used in the method allow us to estimate the relaxation scales of diverse scenarios of the time signals produced by the patient in various dynamic states. The local time behavior of the initial time correlation function and the first point of the non-Markovity parameter give detailed information about the variation of p...

  7. Predicting Academic Achievement from Classroom Behaviors

    Flynt, Cynthia J.

    2008-01-01

    PREDICTING ACADEMIC ACHIEVEMENT FROM CLASSROOM BEHAVIORS by Cynthia J. Flynt Nancy Bodenhorn & Kusum Singh, Co-Chairs Counselor Education (ABSTRACT) This study examined the influence of behaviors exhibited in the classroom on reading and math achievement in the first, third and eighth grades; and the influence of teacher perceptions on reading and math achievement of African-Americans versus White students and male versus female students. Lastly, the study examined te...

  8. Student prosocial behavior and academic achievement

    Spasenović Vera Z.

    2004-01-01

    Full Text Available The paper considers correlation between student prosocial behavior and academic achievement. Attention first focuses on the issue of prosocial behavior defining, making it operational and measuring it. Next consideration is given to the ways that prosocial behavior contributes to academic achievement. It is thought that prosocial behavior can produce indirect effects on student prosocial behavior because it is bound to certain academically relevant forms of behavior leading to successful learning and work. Also, correlation is interpreted by means of teacher’s preferences of prosocial students, which is reflected in teacher expectations and behavior towards students but in evaluating their work too. In addition, prosocial behavior may produce direct effects, for it is through peer prosocial interactions that positive intellectual exchange is performed, which contributes to more successful mastering of teaching content. The paper provides a survey of investigations whose results indicate that there exists correlation between student prosocial behavior and academic achievement. Also, consideration is given to possible methods and treatments for encouraging prosocial behavior in school context, especially the role of teacher in the process and the importance of the program for promoting student prosocial skills.

  9. Human behavioral regularity, fractional Brownian motion, and exotic phase transition

    Li, Xiaohui; Yang, Guang; An, Kenan; Huang, Jiping

    2016-08-01

    The mix of competition and cooperation (C&C) is ubiquitous in human society, which, however, remains poorly explored due to the lack of a fundamental method. Here, by developing a Janus game for treating C&C between two sides (suppliers and consumers), we show, for the first time, experimental and simulation evidences for human behavioral regularity. This property is proved to be characterized by fractional Brownian motion associated with an exotic transition between periodic and nonperiodic phases. Furthermore, the periodic phase echoes with business cycles, which are well-known in reality but still far from being well understood. Our results imply that the Janus game could be a fundamental method for studying C&C among humans in society, and it provides guidance for predicting human behavioral activity from the perspective of fractional Brownian motion.

  10. Regular Deployment of Wireless Sensors to Achieve Connectivity and Information Coverage.

    Cheng, Wei; Li, Yong; Jiang, Yi; Yin, Xipeng

    2016-01-01

    Coverage and connectivity are two of the most critical research subjects in WSNs, while regular deterministic deployment is an important deployment strategy and results in some pattern-based lattice WSNs. Some studies of optimal regular deployment for generic values of rc/rs were shown recently. However, most of these deployments are subject to a disk sensing model, and cannot take advantage of data fusion. Meanwhile some other studies adapt detection techniques and data fusion to sensing coverage to enhance the deployment scheme. In this paper, we provide some results on optimal regular deployment patterns to achieve information coverage and connectivity as a variety of rc/rs, which are all based on data fusion by sensor collaboration, and propose a novel data fusion strategy for deployment patterns. At first the relation between variety of rc/rs and density of sensors needed to achieve information coverage and connectivity is derived in closed form for regular pattern-based lattice WSNs. Then a dual triangular pattern deployment based on our novel data fusion strategy is proposed, which can utilize collaborative data fusion more efficiently. The strip-based deployment is also extended to a new pattern to achieve information coverage and connectivity, and its characteristics are deduced in closed form. Some discussions and simulations are given to show the efficiency of all deployment patterns, including previous patterns and the proposed patterns, to help developers make more impactful WSN deployment decisions. PMID:27529246

  11. Home Media and Children's Achievement and Behavior

    Hofferth, Sandra L.

    2010-01-01

    This study provides a national picture of the time American 6- to 12-year-olds spent playing video games, using the computer, and watching TV at home in 1997 and 2003, and the association of early use with their achievement and behavior as adolescents. Girls benefited from computer use more than boys, and Black children benefited more than White…

  12. Improved Achievable Rates for Regularized Tomlinson-Harashima Precoding in Multiuser MIMO Downlink

    Hui, Bing; Chang, KyungHi

    2011-01-01

    Tomlinson-Harashima precoding (THP) is considered as a prominent precoding scheme due to its capability to efficiently cancel out the known interference at the transmitter side. Therefore, the information rates achieved by THP are superior to those achieved by conventional linear precoding schemes. In this paper, a new lower bound on the achievable information rate for the regularized THP scheme under additive white Gaussian noise (AWGN) channel with multiuser interference is derived. Analytical results show that the lower bound derived in this paper is tighter than the original lower bound particularly for a low SNR range, while all lower bounds converge to 0.5xlog2(6SNR/{\\pi}e) as SNR approaches infinity.

  13. Dynamic behavior of offshore spar platforms under regular sea waves

    Agarwal, A.K.; Jain, A.K. [Indian Inst. of Technology, Dept. of Civil Engineering, New Delhi (India)

    2003-03-01

    Many innovative floating offshore structures have been proposed for cost effectiveness of oil and gas exploration and production in water depths exceeding one thousand meters in recent years. One such type of platform is the offshore floating Spar platform. The Spar platform is modelled as a rigid body with six degrees-of-freedom, connected to the sea floor by multi-component catenary mooring lines, which are attached to the Spar platform at the fairleads. The response dependent stiffness matrix consists of two parts (a) the hydrostatics provide restoring force in heave, roll and pitch, (b) the mooring lines provide the restoring force which are represented here by nonlinear horizontal springs. A unidirectional regular wave model is used for computing the incident wave kinematics by Airy's wave theory and force by Morison's equation. The response analysis is performed in time domain to solve the dynamic behavior of the moored Spar platform as an integrated system using the iterative incremental Newmark's Beta approach. Numerical studies are conducted for sea state conditions with and without coupling of degrees-of-freedom. (Author)

  14. Regular and chaotic behaviors of plasma oscillations modeled by a modified Duffing equation

    Kadji, H G Enjieu [Institut de Mathematiques et de Sciences Physiques, BP 613, Porto-Novo (Benin); Orou, J B Chabi [Institut de Mathematiques et de Sciences Physiques, BP 613, Porto-Novo (Benin); Woafo, P [Laboratory of Modelling and Simulation in Engineering and Biological Physics, Faculty of Science, University of Yaounde I, Box 812, Yaounde (Cameroon)

    2008-02-15

    The regular and chaotic behavior of plasma oscillations governed by a modified Duffing equation is studied. After establishing that equation and focusing on its quadratic and cubic nonlinearities, the harmonic balance method and the fourth-order Runge-Kutta algorithm are used to derive regular and chaotic motions, respectively. A strong chaotic behavior, exhibited by the system in that event when the system is subjected to an external periodic excitation is reported as the nonlinear quadratic term varies.

  15. Self-Regulation Behaviors in Underprepared (Developmental) and Regular Admission College Students

    Ley; Young

    1998-01-01

    Although there is evidence that self-regulated learning processes, such as self-efficacy and goal setting, are significantly related to academic success most studies have not included participants from the one third of the entering college students who must take remedial college courses. The purpose of our research was to examine the differences between the self regulation reported by regular admission students and by underprepared students. We hypothesized that self regulating behaviors could predict developmental, that is underprepared, status or regular admission status among postsecondary students. Self regulation processes in randomly selected developmental and regular admission college students were identified using a structured interview. A discriminant function analysis tested the predictive ability of three measures of self regulating behavior. Developmental and regular admission students differed significantly in their self regulatory strategy deployment. The results suggest that self regulation may be a distinguishing characteristic between some developmental and regular admission students. Copyright 1998 Academic Press. PMID:9514688

  16. Regular and chaotic behaviors of plasma oscillations modeled by a modified Duffing equation

    The regular and chaotic behavior of plasma oscillations governed by a modified Duffing equation is studied. The plasma oscillations are described by a nonlinear differential equation of the form x + w02x + βx2 + αx3 = 0 which is similar to a Duffing equation. By focusing on the quadratic term, which is mainly the term modifying the Duffing equation, the harmonic balance method and the fourth order Runge-Kutta algorithm are used to derive regular and chaotic motions respectively. A strong chaotic behavior exhibited by the system in that event when the system is subjected to an external periodic forcing oscillation is reported as β varies. (author)

  17. Achievement in mathematics and language is linked to regular physical activity: a population study in Chilean youth.

    Correa-Burrows, Paulina; Burrows, Raquel; Orellana, Yasna; Ivanovic, Daniza

    2014-01-01

    We examined the association between the allocation of time to regular physical activity (PA) and achievement in mathematics and language in Chilean adolescents after controlling for confounders. In a random sample of 620 ninth graders (15.6 ± 0.7 years old), we measured regular PA, including physical education and sports extracurricular activities, and academic performance, using national standardised tests. Bivariate and multivariate regression analyses modelled the relation between academic and health-related behaviours. Sufficiency and proficiency in mathematics and language were used as outcome variables. Only 18% of adolescents had >4 h·week(-1) of regular PA. Devoting >4 h · week(-1) to regular PA significantly increased the odds of sufficiency and proficiency in both domains. After full adjustment, the odds of sufficiency and proficiency in mathematics increased by 1.9 (95% CI: 1.1-3.5) and 2.7 (95% CI: 1.7-4.3), respectively. Similarly, the odds of sufficiency and proficiency in language increased by 3.3 (95% CI: 1.7-9.7) and 2.6 (95% CI: 1.6-4.1), respectively. Adolescents with the highest allocation of time to regular PA performed much better in mathematics and language than inactive students. The academic benefits associated with PA can help to promote sustained behaviour changes regarding lifestyles. They can be more easily perceived as gains than health benefits alone. PMID:24754641

  18. Exploring Gains in Reading and Mathematics Achievement among Regular and Exceptional Students Using Growth Curve Modeling

    Shin, Tacksoo; Davison, Mark L.; Long, Jeffrey D.; Chan, Chi-Keung; Heistad, David

    2013-01-01

    Using four-wave longitudinal reading and mathematics data (4th to 7th grades) from a large urban school district, growth curve modeling was used as a tool for examining three research questions: Are achievement gaps closing in reading and mathematics? What are the associations between prior-achievement and growth across the reading and mathematics…

  19. Parent-reported problem behavior among children with sensory disabilities attending elementary regular schools

    Maes, B; Grietens, H

    2004-01-01

    Parent-reported problem behaviors of 94 children with visual and auditory disabilities, attending elementary regular schools, were compared with problems reported in a general population sample of nondisabled children. Both samples were matched by means of a pairwise matching procedure, taking into

  20. Society of Behavioral Medicine position statement: elementary school-based physical activity supports academic achievement

    Buscemi, Joanna; Kong, Angela; Fitzgibbon, Marian L.; Bustamante, Eduardo E.; Davis, Catherine L.; Pate, Russell R.; Wilson, Dawn K.

    2014-01-01

    The Society of Behavioral Medicine (SBM) urges elementary schools to provide children with ample opportunities to engage in physical activity during school hours. In addition to promoting overall child health, physical activity also supports academic achievement. In addition to improving their aerobic fitness, regular physical activity improves cognitive function, influences the brain, and improves mood in children. Better aerobic fitness and physical activity are associated with increased gr...

  1. The Role of Family Factors and School Achievement in the Progression of Adolescents to Regular Smoking

    Pennanen, M.; Vartiainen, E.; Haukkala, A.

    2012-01-01

    This study examines whether parental smoking and single parenting were related to adolescents' school achievement and anti-smoking parental practices as well as how these factors predicted later smoking. The sample comprised 1163 Finnish students in Grades 7 through 9. Results show that at the beginning of the seventh grade, parental smoking and…

  2. Teachers' Nonverbal Behavior and Its Impact on Student Achievement

    Chaudhry, Noureen Asghar; Arif, Manzoor

    2012-01-01

    The observational study was conducted to see the impact of teachers' nonverbal behavior on academic achievement of learners. This also investigated the relationship of nonverbal communication of teachers working in different educational institutions. Main objectives of study were to measure nonverbal behavior of teachers' both male and female…

  3. Adolescent Health Behavior, Contentment in School, and Academic Achievement

    Kristjansson, Alfgeir Logi; Sigfusdottir, Inga Dora; Allegrante, John P.; Helgason, Asgeir R.

    2009-01-01

    Objectives: To examine the association between health behavior indicators, school contentment, and academic achievement. Methods: Structural equation modeling with 5810 adolescents. Results: Our model explained 36% of the variance in academic achievement and 24% in school contentment. BMI and sedentary lifestyle were negatively related to school…

  4. Home Media and Children’s Achievement and Behavior

    Hofferth, Sandra L.

    2010-01-01

    This study provides a national picture of the time American 6–12 year olds spent playing video games, using the computer, and watching television at home in 1997 and 2003 and the association of early use with their achievement and behavior as adolescents. Girls benefited from computers more than boys and Black children’s achievement benefited more from greater computer use than did that of White children. Greater computer use in middle childhood was associated with increased achievement for W...

  5. Age, period, and cohort analysis of regular dental care behavior and edentulism: A marginal approach

    Lam Kwok-Fai; Wong May; Li Kar-Yan; Schwarz Eli

    2011-01-01

    Abstract Background To analyze the regular dental care behavior and prevalence of edentulism in adult Danes, reported in sequential cross-sectional oral health surveys by the application of a marginal approach to consider the possible clustering effect of birth cohorts. Methods Data from four sequential cross-sectional surveys of non-institutionalized Danes conducted from 1975-2005 comprising 4330 respondents aged 15+ years in 9 birth cohorts were analyzed. The key study variables were seekin...

  6. Domain dependent associations between cognitive functioning and regular voluntary exercise behavior.

    Swagerman, Suzanne C; de Geus, Eco J C; Koenis, Marinka M G; Hulshoff Pol, Hilleke E; Boomsma, Dorret I; Kan, Kees-Jan

    2015-07-01

    Regular exercise has often been suggested to have beneficial effects on cognition, but empirical findings are mixed because of heterogeneity in sample composition (age and sex); the cognitive domain being investigated; the definition and reliability of exercise behavior measures; and study design (e.g., observational versus experimental). Our aim was to scrutinize the domain specificity of exercise effects on cognition, while controlling for the other sources of heterogeneity. In a population based sample consisting of 472 males and 668 females (aged 10-86 years old) we administered the Computerized Neurocognitive Battery (CNB), which provided accuracy and speed measures of abstraction and mental flexibility, attention, working memory, memory (verbal, face, and spatial), language and nonverbal reasoning, spatial ability, emotion identification, emotion- and age differentiation, sensorimotor speed, and motor speed. Using univariate and multivariate regression models, CNB scores were associated with participants' average energy expenditure per week (weekly METhours), which were derived from a questionnaire on voluntary regular leisure time exercise behavior. Univariate models yielded generally positive associations between weekly METhours and cognitive accuracy and speed, but multivariate modeling demonstrated that direct relations were small and centered around zero. The largest and only significant effect size (β = 0.11, p < 0.001) was on the continuous performance test, which measures attention. Our results suggest that in the base population, any chronic effects of voluntary regular leisure time exercise on cognition are limited. Only a relation between exercise and attention inspires confidence. PMID:25956142

  7. The impact of regular lifestyle behavior in migraine: a prevalence case-referent study.

    Woldeamanuel, Yohannes W; Cowan, Robert P

    2016-04-01

    Regular lifestyle behaviors (RLBs) of sleep, exercise, mealtime pattern and hydration status independently affect migraine occurrence. We aimed herein to evaluate the differences in migraine occurrence among participants who do and do not maintain the RLB triumvirate. Cases of chronic migraine (CM) and referents of episodic migraine (EM) ≥aged 15 years with charts regularly documenting RLB notes were continuously enrolled from a retrospective case-referent cohort study performed on electronic chart review from January 1, 2014 to January 1, 2015 at the Stanford Headache and Facial Pain Program. Association between RLB prevalence and migraine occurrence was studied. 175 CM and 175 EM patients were enrolled (mean age 44.4 years, 22 % males). Migraine was diagnosed according to the ICHD-3 beta criteria, and was confirmed by a Headache Specialist attending the Clinic. The CM cohort (22 %) exhibited less RLB than the EM cohort (69 %), with crude odds ratio of 0.13 (95 % confidence interval or CI 0.08-0.21). The adjusted odds ratio and adjusted relative risk between RLB+, Meds+ (those taking medication) and CM were 0.67 (95 % CI 0.32-1.40) and 0.74 (95 % CI 0.43-1.28), indicating no significant effect modification. Engaging in regular lifestyle behavior helps quell chronic migraine. PMID:26810728

  8. Excusing Elementary School Students from Regular Classroom Activities for the Study of Instrumental Music: The Effect on Sixth-Grade Reading, Language, and Mathematics Achievement.

    Kvet, Edward J.

    1985-01-01

    No significant difference was found in sixth-grade reading, language, and mathematics achievement between students who were excused from regular classroom activities for the study of instrumental music and students not studying instrumental music. (Author/RM)

  9. Regular and reverse nanoscale stick-slip behavior: Modeling and experiments

    Landolsi, Fakhreddine; Sun, Yuekai; Lu, Hao; Ghorbel, Fathi H.; Lou, Jun

    2010-02-01

    We recently proposed a new nanoscale friction model based on the bristle interpretation of single asperity contacts. The model is mathematically continuous and dynamic which makes it suitable for implementation in nanomanipulation and nanorobotic modeling. In the present paper, friction force microscope (FFM) scans of muscovite mica samples and vertically aligned multi-wall carbon nanotubes (VAMWCNTs) arrays are conducted. The choice of these materials is motivated by the fact that they exibit different stick-slip behaviors. The corresponding experimental and simulation results are compared. Our nanoscale friction model is shown to represent both the regular and reverse frictional sawtooth characteristics of the muscovite mica and the VAMWCNTs, respectively.

  10. Age, period, and cohort analysis of regular dental care behavior and edentulism: A marginal approach

    Lam Kwok-Fai

    2011-03-01

    Full Text Available Abstract Background To analyze the regular dental care behavior and prevalence of edentulism in adult Danes, reported in sequential cross-sectional oral health surveys by the application of a marginal approach to consider the possible clustering effect of birth cohorts. Methods Data from four sequential cross-sectional surveys of non-institutionalized Danes conducted from 1975-2005 comprising 4330 respondents aged 15+ years in 9 birth cohorts were analyzed. The key study variables were seeking dental care on an annual basis (ADC and edentulism. For the analysis of ADC, survey year, age, gender, socio-economic status (SES group, denture-wearing, and school dental care (SDC during childhood were considered. For the analysis of edentulism, only respondents aged 35+ years were included. Survey year, age, gender, SES group, ADC, and SDC during childhood were considered as the independent factors. To take into account the clustering effect of birth cohorts, marginal logistic regressions with an independent correlation structure in generalized estimating equations (GEE were carried out, with PROC GENMOD in SAS software. Results The overall proportion of people seeking ADC increased from 58.8% in 1975 to 86.7% in 2005, while for respondents aged 35 years or older, the overall prevalence of edentulism (35+ years decreased from 36.4% in 1975 to 5.0% in 2005. Females, respondents in the higher SES group, in more recent survey years, with no denture, and receiving SDC in all grades during childhood were associated with higher probability of seeking ADC regularly (P P P Conclusions With the use of GEE, the potential clustering effect of birth cohorts in sequential cross-sectional oral health survey data could be appropriately considered. The success of Danish dental health policy was demonstrated by a continued increase of regular dental visiting habits and tooth retention in adults because school dental care was provided to Danes in their childhood.

  11. Society of Behavioral Medicine position statement: elementary school-based physical activity supports academic achievement.

    Buscemi, Joanna; Kong, Angela; Fitzgibbon, Marian L; Bustamante, Eduardo E; Davis, Catherine L; Pate, Russell R; Wilson, Dawn K

    2014-12-01

    The Society of Behavioral Medicine (SBM) urges elementary schools to provide children with ample opportunities to engage in physical activity during school hours. In addition to promoting overall child health, physical activity also supports academic achievement. In addition to improving their aerobic fitness, regular physical activity improves cognitive function, influences the brain, and improves mood in children. Better aerobic fitness and physical activity are associated with increased grade point averages and standardized test scores. Despite the documented relationship between physical activity, fitness, and academic achievement, few schools have implemented physical activity as a tool to improve academic performance. SBM recommends that elementary schools provide children with the recommended 60 min of moderate-to-vigorous physical activity during school hours. Further, SBM urges schools to work with the local school districts and state education departments to mandate minimum physical activity time for elementary school physical education. PMID:25584093

  12. The effect of red on avoidance behavior in achievement contexts.

    Elliot, Andrew J; Maier, Markus A; Binser, Martin J; Friedman, Ron; Pekrun, Reinhard

    2009-03-01

    This research tests whether the perception of red in an achievement context evokes avoidance behavior without conscious awareness and also examines the context specificity of the hypothesized red effect. In Experiment 1, participants were briefly shown red or green on the cover of an analogies test that they would ostensibly take (an achievement context) or rate on likability of (a nonachievement context) in an adjacent lab. Those shown red, relative to those shown green, knocked fewer times on the door of the adjacent lab in the achievement context; no red-green difference in knocking was observed in the nonachievement context. In Experiment 2, participants were briefly shown red, green, or gray on the cover of an IQ test that they would ostensibly take. Those shown red moved their body away from the test cover to a greater degree than did those shown green or gray. This research contributes to incipient work on color psychology and to the more established literature on the automatic link between evaluation and behavior. PMID:19223458

  13. The Association Between Educational Achievements, Career Aspirations, Achievement Motives and Oral Hygiene Behavior among Dental Students of Udaipur, India

    Asawa, Kailash; Chaturvedi, Pulkit; Tak, Mridula; Nagarajappa, Ramesh; Bhat, Nagesh; Bapat, Salil; Gupta, Vivek; Jalihal, Sagar

    2014-01-01

    Background There are several factors which influence oral hygiene behavior of an individual. Educational achievements, career aspirations and achievement motives of individuals are some of those factors. The objective of this study was to investigate whether educational achievements, career aspirations and achievement motives have associations with oral hygiene behavior among dental students of Udaipur, India. Methods A descriptive cross-sectional study was conducted among all (n=200) 1st yea...

  14. Is It Possible to Improve Mathematical Achievement by Means of Self-Regulation Strategies? Evaluation of an Intervention in Regular Math Classes

    Perels, Franziska; Dignath, Charlotte; Schmitz, Bernhard

    2009-01-01

    After the effectiveness of self-regulation training outside school was demonstrated, a self-regulation intervention was developed to foster the learning achievement in regular math classes. Based on the theoretical framework of self-regulated learning, self-regulation training was integrated into a math class unit. The evaluation of the…

  15. A Transdisciplinary Team Approach to Achieving Moral Agency across Regular and Special Education in K-12 Schools

    Zaretsky, Lindy

    2007-01-01

    Purpose: The purpose of this paper is to propose a framework for integrating social responsibility within the accountability context now prevalent across the regular and special education contexts of Canadian and American schools while exposing readers to many of the different theories that exist concerning transdisciplinary forms of inclusive…

  16. Critical behavior of a fixed-energy Manna sandpile model for regular initial conditions in one dimension

    Kwon, Sungchul; Kim, Jin Min

    2015-12-01

    For a fixed-energy (FE) Manna sandpile model in one dimension, we investigate the critical behavior for regular initial conditions in which activities are distributed at regular intervals on average. The FE Manna model conserves the density ρ of total particles and undergoes an absorbing phase transition at a critical ρc. For the regular initial conditions, we show via extensive simulations that the dynamical scaling behaviors differ from those of the random and the natural initial conditions. Off-critical scaling exponents β and ν⊥ are also measured and shown to agree well with the values of the directed percolation (DP) class as reported by Basu et al. [Phys. Rev. Lett. 109, 015702 (2012), 10.1103/PhysRevLett.109.015702]. Our results suggest that the dynamical scaling behaviors depend on the characteristics of initial conditions, but the off-critical scaling behaviors in the steady state are independent of initial conditions and belong to the DP class.

  17. Unexpected Regularity in Swimming Behavior of Clausocalanus furcatus Revealed by a Telecentric 3D Computer Vision System.

    Giuseppe Bianco

    Full Text Available Planktonic copepods display a large repertoire of motion behaviors in a three-dimensional environment. Two-dimensional video observations demonstrated that the small copepod Clausocalanus furcatus, one the most widely distributed calanoids at low to medium latitudes, presented a unique swimming behavior that was continuous and fast and followed notably convoluted trajectories. Furthermore, previous observations indicated that the motion of C. furcatus resembled a random process. We characterized the swimming behavior of this species in three-dimensional space using a video system equipped with telecentric lenses, which allow tracking of zooplankton without the distortion errors inherent in common lenses. Our observations revealed unexpected regularities in the behavior of C. furcatus that appear primarily in the horizontal plane and could not have been identified in previous observations based on lateral views. Our results indicate that the swimming behavior of C. furcatus is based on a limited repertoire of basic kinematic modules but exhibits greater plasticity than previously thought.

  18. Association between regular participation in sports and leisure time behaviors in Brazilian adolescents: A cross-sectional study

    Loch Mathias

    2008-09-01

    Full Text Available Abstract Background The belief that adolescents engaged in sports increase their overall physical activity level while simultaneously decreasing physical inactivity has been the foundation of many intervention programs in developing countries. The aim of this study was to analyze the association between regular participation in sports and both active behaviors and TV viewing during leisure time. Methods A total of 1752 Brazilian adolescents (812 = male and 940 = female participated in this study. Regular participation in sports, as well as active behaviors (exemplified by walking or cycling and TV viewing during leisure time were assessed by means of a questionnaire. The chi-square test analyzed the association between sports practice and leisure time behaviors, and the Poisson regression with robust variance indicated the magnitude of these associations. Results The prevalence of regular participation in sports was 14.8% (95% confidence interval 13.2% to 16.5%. After adjustment for all confounders, participation in sports was associated with, at the highest frequency, cycling (PR = 2.55 [1.80–3.60] and walking (PR = 2.69 [1.98–3.64] during leisure time. However, there was not an association between the participation in sports and frequency of TV viewing (PR = 1.28 [0.81–2.02]. Conclusion This study presented data indicating that the regular participation in sports is positively associated with a higher frequency of physically active behaviors during leisure time. However, the results did not support the hypothesis that the engagement in sports necessarily decreases leisure time spent in TV viewing.

  19. Association between regular participation in sports and leisure time behaviors in Brazilian adolescents: A cross-sectional study

    Loch Mathias; Vaz Ronque Enio; Cardoso Jefferson; Júnior Ismael; Fernandes Rômulo; de Oliveira Arli

    2008-01-01

    Abstract Background The belief that adolescents engaged in sports increase their overall physical activity level while simultaneously decreasing physical inactivity has been the foundation of many intervention programs in developing countries. The aim of this study was to analyze the association between regular participation in sports and both active behaviors and TV viewing during leisure time. Methods A total of 1752 Brazilian adolescents (812 = male and 940 = female) participated in this s...

  20. Modification of provider behavior to achieve improved asthma outcomes.

    Jones, Erika M; Portnoy, Jay M

    2003-11-01

    Despite an abundance of scientific evidence supporting the use of guidelines, adherence to asthma practice guidelines by physicians generally is low, regardless of provider and patient characteristics. As a result, scientific information, obtained with great effort and at huge expense, is not being translated into clinical practice. To remedy this, we developed a disease management program that emphasizes alteration of provider behavior using operant conditioning. We did this by placing asthma educators in private offices for up to 8 weeks. The educators used a combination of problem-based learning, role modeling, and operant conditioning with positive reinforcement to affect behavior change. As a result of these behavior changes, by the end of 8 weeks the cost to treat asthma patients decreased, despite an increase in the cost of medications. We concluded that behavior-oriented programs targeted at provider offices can lead to improved asthma care while reducing costs. PMID:14531969

  1. The relationships between problem characteristics, achievement-related behaviors, and academic achievement in problem-based learning

    Sockalingam, Nachamma; Rotgans, Jerome; Schmidt, Henk

    2011-01-01

    textabstractThis study investigated the influence of five problem characteristics on students' achievement-related classroom behaviors and academic achievement. Data from 5,949 polytechnic students in PBL curricula across 170 courses were analyzed by means of path analysis. The five problem characteristics were: (1) problem clarity, (2) problem familiarity, (3) the extent to which the problem stimulated group discussion, (4) self-study, and (5) identification of learning goals. The results sh...

  2. The Gambling Preferences and Behaviors of a Community Sample of Australian Regular Video Game Players.

    Forrest, Cameron J; King, Daniel L; Delfabbro, Paul H

    2016-06-01

    Research has noted many similarities between video gaming and gambling activities. It has been suggested that video game players may also be attracted to gambling, although there is limited research on this possibility. The present study examined concurrent video gaming and gambling habits in a sample of regular video game players in Australia (N = 485, 84 % male, M age = 25.8). Gambling involvement was found to be a generally unpopular activity among regular video game players. No significant association between frequency of video game play and frequency of gambling was found. Although significant correlations between gaming 'addiction' scores and gambling frequency were identified, age was the only significant predictor of gambling when controlling for all remaining variables. These findings are critically discussed in the context of past research, and future research directions concerning the link between video gaming and gambling are proposed. PMID:25773869

  3. LIPSCHITZ REGULARITY FOR INTEGRO-DIFFERENTIAL EQUATIONS WITH COERCIVE HAMILTONIANS AND APPLICATION TO LARGE TIME BEHAVIOR

    Barles, Guy; Ley, Olivier; Topp, Erwin

    2016-01-01

    In this paper, we provide suitable adaptations of the " weak version of Bernstein method " introduced by the first author in 1991, in order to obtain Lipschitz regularity results and Lipschitz estimates for nonlinear integro-differential elliptic and parabolic equations set in the whole space. Our interest is to obtain such Lipschitz results to possibly degenerate equations, or to equations which are indeed " uniformly el-liptic " (maybe in the nonlocal sense) but which do not satisfy the usu...

  4. Marijuana Use at School and Achievement-Linked Behaviors

    Finn, Kristin V.

    2012-01-01

    Marijuana remains one of the most frequently used drugs among adolescents and usage has increased in recent years. In addition to general use, many high school students use marijuana during the school day. The present study focused on achievement-linked correlates of in-school marijuana use by comparing non-users, general users, and school users…

  5. Achieving more with less: Extra milers' behavioral influences in teams.

    Li, Ning; Zhao, Helen H; Walter, Sheryl L; Zhang, Xin-An; Yu, Jia

    2015-07-01

    Teams are composed of individual members who collectively contribute to team success. As a result, contemporary team research tends to focus on how team overall properties (e.g., the average of team personality and behavior) affect team processes and effectiveness while overlooking the potential unique influences of specific members on team outcomes. Drawing on minority influence theory (Grant & Patil, 2012), we extend previous teams research by demonstrating that an extra miler (i.e., a team member exhibiting the highest frequency of extra-role behaviors in a team) can influence team processes and, ultimately, team effectiveness beyond the influences of all the other members. Specifically, based on a field study, we report that the extra miler's behavioral influences (i.e., helping and voice) on team monitoring and backup processes and team effectiveness are contingent on his or her network position in the team, such that the member tends to have stronger influence on team outcomes when he or she is in a central position. We also find that even a single extra miler in a vital position plays a more important role in driving team processes and outcomes than do all the other members. Therefore, our research offers an important contribution to the team literature by demonstrating the disproportionate influences of specific team members on team overall outcomes. PMID:25664471

  6. The Dynamics of Condom Use with Regular and Casual Partners: Analysis of the 2006 National Sexual Behavior Survey of Thailand

    Aphichat Chamratrithirong; Paulina Kaiser

    2012-01-01

    OBJECTIVE: This study aims to determine factors associated with levels of condom use among heterosexual Thai males in sex with regular partners and in sex with casual partners. METHODS: The data used in this study are from the national probability sample of the 2006 National Sexual Behavior Study, the third nationally representative cross-sectional survey in Thailand. A subtotal of 2,281 men were analyzed in the study, including young (18-24) and older (25-59) adults who were residents of rur...

  7. Influence of Falling Height on the Behavior of Skid- Launching Free-Fall Lifeboat in Regular Waves

    M.M Karim

    2011-01-01

    Full Text Available This paper numerically investigated the influence of falling height on the behavior of the skid-launching free-fall lifeboat (FFLB in regular waves. The boat has been treated as a rigid body when the differential equations of motion for the four falling phases, i.e., sliding or ramp phase, rotation phase, free-fall phase and water entry phase of the lifeboat were solved in the time domain. The hydrodynamic characteristics of the lifeboat has been studied for different falling heights such as H = 1.5m, 1.75m and 2.00m. Horizontal and vertical excursions and the rotation of the axis of the boat have been computed at different time along with its horizontal and vertical velocities. Hydrodynamic forces and accelerations at normal and axial directions have also been determined. At first the analysis has been done in still water and then in regular wave with amplitude of 0.5m and a period of 2.0 sec. In all of the cases, effects of regular wave are shown by comparing the results with those considering the falling of FFLB into calm water.

  8. Influence of hydrodynamic coefficients in the response behavior of triangular TLPs in regular waves

    Chandrasekaran, S.; Chandak, N.R. [Banaras Hindu University, Varanasi (India). Institute of Technology, Department of Civil Engineering; Jain, A.K. [Indian Institute of Technology, New Delhi (India). Department of Civil Engineering

    2004-12-01

    Triangular configuration tension leg platforms (TLPs) are used for deep-water oil/gas exploration. The mechanics of TLP is highly nonlinear due to larger structural displacements and fluid motion-structure interaction. Triangular TLP has major consideration for deep-water application also due to its relative insensitivity with increasing water depth, excellent station keeping characteristics, etc. which makes this as a most cost effective and practical production system for deep waters. This study focuses on the influence of hydrodynamic drag coefficient (C{sub d}) and hydrodynamic inertia coefficient (C{sub m}) on the nonlinear response behaviour or triangular TLP models under regular waves. Two typical triangular TLP models vis-a-vis TLP{sub 1} and TLP{sub 2} are taken for the study at 600 and 1200 m water depths, respectively. Hydrodynamic forces on these TLPs are evaluated using modified Morison equation under regular waves. Diffraction effects are neglected. Various nonlinearities arising due to relative velocity term in drag force, change the tether tension due to TLP movement, and set down effect are being considered in the analysis. The dynamic equation of motion has been solved in time-domain by employing Newmark's {beta} numerical integration technique. Based on the numerical study conducted, it is seen that the response evaluated using varying hydrodynamic coefficients through the water depth is significantly lesser in comparison to the response with constant coefficients in all activated degrees-of-freedom. However, sway, roll, and yaw degrees-of-freedom are not present due to the undirectional waveloading considered for the study. The influence of the hydrodynamic coefficients in wave period of 15 s is more in comparison with that of 10 s, and is nonlinear. The hydrodynamic coefficients also influence the plan dimension of TLP and its site location (geometry). Therefore, it may become essential to estimate the range of C{sub d}-C{sub m} values to

  9. Long-Term Evolution of Email Networks: Statistical Regularities, Predictability and Stability of Social Behaviors.

    Godoy-Lorite, Antonia; Guimerà, Roger; Sales-Pardo, Marta

    2016-01-01

    In social networks, individuals constantly drop ties and replace them by new ones in a highly unpredictable fashion. This highly dynamical nature of social ties has important implications for processes such as the spread of information or of epidemics. Several studies have demonstrated the influence of a number of factors on the intricate microscopic process of tie replacement, but the macroscopic long-term effects of such changes remain largely unexplored. Here we investigate whether, despite the inherent randomness at the microscopic level, there are macroscopic statistical regularities in the long-term evolution of social networks. In particular, we analyze the email network of a large organization with over 1,000 individuals throughout four consecutive years. We find that, although the evolution of individual ties is highly unpredictable, the macro-evolution of social communication networks follows well-defined statistical patterns, characterized by exponentially decaying log-variations of the weight of social ties and of individuals' social strength. At the same time, we find that individuals have social signatures and communication strategies that are remarkably stable over the scale of several years. PMID:26735853

  10. Mechanical behavior of regular open-cell porous biomaterials made of diamond lattice unit cells.

    Ahmadi, S M; Campoli, G; Amin Yavari, S; Sajadi, B; Wauthle, R; Schrooten, J; Weinans, H; Zadpoor, A A

    2014-06-01

    Cellular structures with highly controlled micro-architectures are promising materials for orthopedic applications that require bone-substituting biomaterials or implants. The availability of additive manufacturing techniques has enabled manufacturing of biomaterials made of one or multiple types of unit cells. The diamond lattice unit cell is one of the relatively new types of unit cells that are used in manufacturing of regular porous biomaterials. As opposed to many other types of unit cells, there is currently no analytical solution that could be used for prediction of the mechanical properties of cellular structures made of the diamond lattice unit cells. In this paper, we present new analytical solutions and closed-form relationships for predicting the elastic modulus, Poisson׳s ratio, critical buckling load, and yield (plateau) stress of cellular structures made of the diamond lattice unit cell. The mechanical properties predicted using the analytical solutions are compared with those obtained using finite element models. A number of solid and porous titanium (Ti6Al4V) specimens were manufactured using selective laser melting. A series of experiments were then performed to determine the mechanical properties of the matrix material and cellular structures. The experimentally measured mechanical properties were compared with those obtained using analytical solutions and finite element (FE) models. It has been shown that, for small apparent density values, the mechanical properties obtained using analytical and numerical solutions are in agreement with each other and with experimental observations. The properties estimated using an analytical solution based on the Euler-Bernoulli theory markedly deviated from experimental results for large apparent density values. The mechanical properties estimated using FE models and another analytical solution based on the Timoshenko beam theory better matched the experimental observations. PMID:24566381

  11. Mean-field behavior of the negative-weight percolation model on random regular graphs.

    Melchert, Oliver; Hartmann, Alexander K; Mézard, Marc

    2011-10-01

    We investigate both analytically and numerically the ensemble of minimum-weight loops in the negative-weight percolation model on random graphs with fixed connectivity and bimodal weight distribution. This allows us to study the mean-field behavior of this model. The analytical study is based on a conjectured equivalence with the problem of self-avoiding walks in a random medium. The numerical study is based on a mapping to a standard minimum-weight matching problem for which fast algorithms exist. Both approaches yield results that are in agreement on the location of the phase transition, on the value of critical exponents, and on the absence of any sizable indications of a glass phase. By these results, the previously conjectured upper critical dimension of d(u)=6 is confirmed. PMID:22181086

  12. Regular and Chaotic Flow Behavior and Orientational Dynamics of Tumbling Nematics

    Hess, S.; Heidenreich, S.; Ilg, P.; Kröger, M.

    2006-05-01

    We consider liquid crystalline polymers under plane Couette flow and investigate the influence of fluctuating shear rates on the orientational dynamics. With help of phase portraits and time evolution diagrams of the alignment tensor components, we discuss the effect of fluctuations on the flow-aligned, isotropic and periodic solutions. To explore the effect of fluctuations on the chaotic behavior we calculated the greatest Lyapunov exponent for different fluctuation strengths. We found that fluctuations of the shear rate in general have little effect on the dynamics of tumbling nematics. Further we present a new amended potential modeling the isotropic-to-nematic transition. In contrast to the Landau-de Gennes potential our potential has the advantage to restrict the order parameter to physically admissible values. In the end we present some results of the orientational dynamics for a spatially inhomogeneous system.

  13. Predicting Developmental Change in Healthy Eating and Regular Exercise among Adolescents in China and the United States: The Role of Psychosocial and Behavioral Protection and Risk

    Jessor, Richard; Turbin, Mark S.; Costa, Frances M.

    2010-01-01

    This article reports a cross-national study of developmental change in health-enhancing behavior--healthy eating and regular exercise--among adolescents in China and the United States. The application of a conceptual framework comprising psychosocial and behavioral protective and risk factors--both proximal and distal and at both the individual…

  14. Relationship between Achievement Goals and Students' Self-Reported Personal and Social Responsibility Behaviors.

    Agbuga, Bulent; Xiang, Ping; McBride, Ron E

    2015-01-01

    This study utilized the 2x2 achievement goal model (mastery-approach, mastery-avoidance, performance-approach, performance-avoidance goals) to explore the relationships between achievement goals and self-reported personal and social responsibility behaviors in high school physical education settings. Two hundred and twenty one Turkish students completed questionnaires assessing their achievement goals, personal and social responsibility behaviors. Results of the one-way repeated measures ANOVA revealed significant differences among the four achievement goals, F(3, 660) = 137.05, p social responsibility (r = .38, p responsibility behaviors, and b = .41, t(216) = 5.23, p social responsibility behaviors. These findings seem to provide convergent evidence that mastery-approach goals are positively related to positive educational outcomes. PMID:25896600

  15. Type A Behavior and Marital Satisfaction: Differential Effects of Achievement Striving and Impatience/Irritability.

    MacEwen, Karyl; Barling, Julian

    1993-01-01

    Examined how dimensions of Type A behavior exert different effects on marital relationship. Findings from 200 couples are consistent with view that Type A behavior should be divided into at least 2 components, and that it is Impatience/Irritability dimension rather than achievement-oriented or job-involved dimension that exerts detrimental effects…

  16. Effects of Student Uniforms on Attendance, Behavior Problems, Substance Use, and Academic Achievement.

    Brunsma, David L.; Rockquemore, Kerry A.

    1998-01-01

    Examined 10th-grade data from the 1988 National Educational Longitudinal Study to investigate the effects of school uniforms on student attendance, behavior problems, substance use, and academic achievement. Data from public, private, and Catholic schools indicated that uniforms had no direct effect on substance use, attendance, or behavior, and a…

  17. Self-Regulated Learning Behavior of College Students of Science and Their Academic Achievement

    Peng, Cuixin

    This study focuses on the relationship between self-regulated learning behavior and their academic achievement of college students of science. For students of science, their involvement in motivational components is closely tied to their performance in the examinations. Cognitive strategies have the strongest influence on scores of the English achievement.

  18. Development of Robots with Soft Sensor Flesh for Achieving Close Interaction Behavior

    Tomoaki Yoshikai; Marika Hayashi; Yui Ishizaka; Hiroko Fukushima; Asuka Kadowaki; Takashi Sagisaka; Kazuya Kobayashi; Iori Kumagai; Masayuki Inaba

    2012-01-01

    In order to achieve robots' working around humans, safe contacts against objects, humans, and environments with broad area of their body should be allowed. Furthermore, it is desirable to actively use those contacts for achieving tasks. Considering that, many practical applications will be realized by whole-body close interaction of many contacts with others. Therefore, robots are strongly expected to achieve whole-body interaction behavior with objects around them. Recently, it becomes possi...

  19. From inactive to regular jogger

    Lund-Cramer, Pernille; Brinkmann Løite, Vibeke; Bredahl, Thomas Viskum Gjelstrup;

    study was conducted using individual semi-structured interviews on how a successful long-term behavior change had been achieved. Ten informants were purposely selected from participants in the DANO-RUN research project (7 men, 3 women, average age 41.5). Interviews were performed on the basis of Theory...... of Planned Behavior (TPB) and The Transtheoretical Model (TTM). Coding and analysis of interviews were performed using NVivo 10 software. Results TPB: During the behavior change process, the intention to jogging shifted from a focus on weight loss and improved fitness to both physical health, psychological......Title From inactive to regular jogger - a qualitative study of achieved behavioral change among recreational joggers Authors Pernille Lund-Cramer & Vibeke Brinkmann Løite Purpose Despite extensive knowledge of barriers to physical activity, most interventions promoting physical activity have proven...

  20. Natural regularization

    We formulate natural regularization (NR) as a variant of dimensional regularization (DR). We replace the conventional dimensional reduction by a dimensionless regulator, allowing a transparent regularization of standard D-dimensional Feynman integrals. For arbitrary dimensions, we motivate and demonstrate explicitly the transition from the dimensionally reduced integration space to natural regularization. We establish the relation to cut-off regularization and point out the basic differences from dimensional regularization. Possible applications, such as to the axial anomaly or to gauge theories are briefly touched upon. (author)

  1. Good character at school: Positive classroom behavior mediates the link between character strengths and school achievement

    Lisa eWagner

    2015-05-01

    Full Text Available Character strengths have been found to be substantially related to children’s and adolescents’ well-being. Initial evidence suggests that they also matter for school success (e.g., Weber and Ruch, 2012. The present set of two studies aimed at replicating and extending these findings in two different age groups, primary school students (N = 179; mean age = 11.6 years and secondary school students (N = 199; mean age = 14.4 years. The students completed the VIA-Youth, a self-report measure of the 24 character strengths in the VIA classification. Their teachers rated the students’ positive behavior in the classroom. Additionally, school achievement was assessed: For the primary school students (Study 1, teachers rated the students’ overall school achievement and for the secondary school students (Study 2, we used their grades as a measure of school achievement. We found that several character strengths were associated with both positive classroom behavior and school achievement. Across both samples school achievement was correlated with love of learning, perseverance, zest, gratitude, hope, and perspective. The strongest correlations with positive classroom behavior were found for perseverance, self-regulation, prudence, social intelligence, and hope. For both samples, there were indirect effects of most of the character strengths on school achievement through teacher-rated positive classroom behavior. The converging findings from the two samples support the notion that character strengths contribute to positive classroom behavior, which in turn enhances school achievement. Results are discussed in terms of their implications for future research and for school interventions based on character strengths.

  2. The Effect of Perceived Motivational Structure of Classroom on Achievement Behaviors

    Siavash Talepasand

    2013-06-01

    Full Text Available The aim of the study was to investigate the effect of perceived motivational structure of classroom on achievement behaviors (the choice of problem, effort, persistence in solving algorithm and flowchart problems. There were 45 high school male students (Mean age = 17 years old in the third grade of computer field in three classes. Classes were divided into two experimental and one control group. Instructional content was given in 10 sessions for 180 minutes. The variables of choice, effort, and persistence were collected by direct as-sessment method. A pre-test and post-test design was used. The Data were analyzed by using multivariate analysis of variance. Results indicated that mastery structure had positive effect on the amount of effort and persistence in solving algorithm and flowchart problems in comparison with control group. Mastery structure in comparison with performance structure increased the amount of effort in solving problems significantly. In addition, an interactive effect between previous achieve-ment and perceived structure of classroom was achieved in a mastery level. The amount of persistence in that of students with very weak previous achievement was more than students with average previous achievement. The find-ing of this study is compatible with the theory of achievement goal and illustrates that the mastery structure plays an effective role in forming achievement behaviors.

  3. The Effects of Teacher Education Level, Teaching Experience, And Teaching Behaviors On Student Science Achievement

    Zhang, Danhui

    2008-01-01

    Previous literature leaves us unanswered questions about whether teaching behaviors mediate the relationship between teacher education level and experience with student science achievement. This study examined this question with 655 students from sixth to eighth grade and their 12 science teachers. Student science achievements were measured at the beginning and end of 2006-2007 school year. Given the cluster sampling of students nested in classrooms, which are nested in teachers, a two-lev...

  4. Regular figures

    Tóth, L Fejes; Ulam, S; Stark, M

    1964-01-01

    Regular Figures concerns the systematology and genetics of regular figures. The first part of the book deals with the classical theory of the regular figures. This topic includes description of plane ornaments, spherical arrangements, hyperbolic tessellations, polyhedral, and regular polytopes. The problem of geometry of the sphere and the two-dimensional hyperbolic space are considered. Classical theory is explained as describing all possible symmetrical groupings in different spaces of constant curvature. The second part deals with the genetics of the regular figures and the inequalities fo

  5. USE OF VIDEOGAMES AND COMPUTER GAMES: INFLUENCES ON ATTENTION, MEMORY, ACADEMIC ACHIEVEMENT AND PROBLEMS BEHAVIOR

    Harold Germán Rodríguez Celis

    2011-12-01

    Full Text Available This study was designed to identify the relationship between video and computergames use on attention, memory, academic performance and problemsbehavior in school children in Bogotá. Memory and attention were assessedusing a set of different scales of ENI Battery (Matute, Rosselli, Ardila, & Ostrosky-Solís, 2007. For Academic performance, school newsletters were used.Behavioral problems were assessed through the CBCL / 6 -18 questionnaire(Child Behavior Checklist of (Achenbach & Edelbrock, 1983. 123 children and99 parents were enrolled in 2 factorial design experimental studies. The resultsdid not support the hypothesis of a significant change in memory tests, orintra-subject selective visual and hearing attention. However, these variablesshowed significant differences among children exposed to habitual videogamesconsumption. No differences were found between the level of regular videogames consumption in school children and academic performance variables orbehavioral problems.

  6. EFFECTS OF AN INTENSIVE INSERVICE PROGRAM ON TEACHER'S CLASSROOM BEHAVIOR AND PUPIL READING ACHIEVEMENT.

    HEILMAN, ARTHUR W.

    AN INVESTIGATION WAS MADE TO GAUGE THE EFFECTS OF AN INTENSIVE, INSERVICE TRAINING PROGRAM ON TEACHERS' CLASSROOM BEHAVIOR AND READING ACHIEVEMENT OF PUPILS TAUGHT BY PARTICIPATING TEACHERS. A TOTAL OF 30 FIRST-GRADE TEACHERS VOLUNTEERED FOR PARTICIPATION. ONE-HALF OF THIS TOTAL WAS ASSIGNED TO AN EXPERIMENTAL GROUP, AND THE OTHER HALF TO A…

  7. The Role of Temperament in Children's Affective and Behavioral Responses in Achievement Situations

    Hirvonen, Riikka; Aunola, Kaisa; Alatupa, Saija; Viljaranta, Jaana; Nurmi, Jari-Erik

    2013-01-01

    Although students' affects and behaviors in achievement situations have been shown to be influenced by their previous learning experiences, less is known about how they relate to students' dispositional characteristics, such as temperament. This study examined to what extent children's temperament is related to their affective and behavioral…

  8. Recent Advances in Developmental Pediatrics Related to Achievement and Social Behavior.

    Mathews, Wendy S.; Barabas, Gabor

    1985-01-01

    Recent advances related to the achievement and school behavior in children with tic syndromes, seizure disorders, and minor physical anomolies are discussed. The role of the school psychologist as liaison between the pupil's teacher, family, and physician is described, as well as his or her role with the children themselves. (Author/EGS)

  9. Early Behavioral Self-Regulation, Academic Achievement, and Gender: Longitudinal Findings from France, Germany, and Iceland

    Gestsdottir, Steinunn; von Suchodoletz, Antje; Wanless, Shannon B.; Hubert, Blandine; Guimard, Philippe; Birgisdottir, Freyja; Gunzenhauser, Catherine; McClelland, Megan

    2014-01-01

    Research suggests that behavioral self-regulation skills are critical for early school success, but few studies have explored such links among young children in Europe. This study examined the contribution of early self-regulation to academic achievement gains among children in France, Germany, and Iceland. Gender differences in behavioral…

  10. Socioemotional Behavior and School Achievement in Relation to Extracurricular Activity Participation in Middle Childhood

    Metsapelto, Riitta-Leena; Pulkkinen, Lea

    2012-01-01

    This 3-year longitudinal study investigated the associations of student (aged 9 to 10 years at the beginning of the study; n = 281; 51% girls) participation in extracurricular activities with teacher-rated socioemotional behavior and school achievement. MANOVA results showed that, after controlling for the grade level and the initial level of the…

  11. Academic Optimism, Organizational Citizenship Behaviors, and Student Achievement at Charter Schools

    Guvercin, Mustafa

    2013-01-01

    The purpose of this study was to examine the relationship among academic optimism, Organizational Citizenship Behaviors (OCBs), and student achievement in college preparatory charter schools. A purposeful sample of elementary school teachers from college preparatory charter schools (N = 226) in southeast Texas was solicited to complete the…

  12. English Learning Achievement and EFL Learners' Cheating Attitudes and Cheating Behaviors

    Rahim, Mehrak; Goli, Atefeh

    2016-01-01

    The aim of the current study was investigating the role of achievement in learning English as a foreign language in EFL learners' cheating attitudes and cheating behaviors. Eight hundred junior high-school students were selected based on random cluster sampling and participated in the study. Their attitudes towards academic dishonesty and their…

  13. Teachers' Feedback on Homework, Homework-Related Behaviors, and Academic Achievement

    Núñez, José Carlos; Suárez, Natalia; Rosário, Pedro; Vallejo, Guillermo; Cerezo, Rebeca; Valle, António

    2015-01-01

    The authors intended to (a) identify the association between gender or grade level and teachers' homework (HW) feedback and (b) examine the relationship between teachers' HW feedback, HW-related behaviors (e.g., amount of HW completed), and academic achievement. Four hundred fifty-four students (Grades 5-12) participated in this study. The results…

  14. The Links between Parent Behaviors and Boys' and Girls' Science Achievement Beliefs

    Bhanot, Ruchi T.; Jovanovic, Jasna

    2009-01-01

    This study examined whether parental involvement in children's science schoolwork (i.e., discussions about science, homework helping and encouragement of science interest) varies for boys and girls, and how these behaviors relate to children's science achievement beliefs (i.e., ability perceptions and task-value) at the end of a school year. We…

  15. Communication Satisfaction, Organizational Citizenship Behavior and the Relationship to Student Achievement in High Schools

    Blanchard, Gayle A.

    2012-01-01

    This study used a correlational design that allowed the researcher to examine the relationship among communication satisfaction, organizational citizenship behaviors (OCB) and student achievement. High school teachers were surveyed from a convenience sample of 12 school districts in Arizona. Established instruments were used to survey…

  16. Does Learning Behavior Augment Cognitive Ability as an Indicator of Academic Achievement?

    Yen, Cherng-Jyh; Konold, Timothy R.; McDermott, Paul A.

    2004-01-01

    Measures of cognitive ability have a rich history of accounting for meaningful levels of achievement variance. In contrast to other student characteristics, however, they are somewhat limited in terms of their intervention relevance and treatment validity. Alternatively, children's observable learning behaviors are believed to enhance both…

  17. Effect of Self-Regulated Learning and Motivation to Achieve against Teacher Professional Capability for Student S1 PGSD of Science Field Compared with Regular Student S1 PGSD at UPBJJ Serang

    Prayekti

    2015-01-01

    This study is to know effect of self-regulated learning and motivation to achieve against teacher professional capability for student S1 PGSD of science field compared with regular student S1 PGSD. The student uses grades of Classroom Action Research (CAR) and Stabilization of Professional Capability (SPC) on curriculum of S1 PGSD to see…

  18. Regular moderate or intense exercise prevents depression-like behavior without change of hippocampal tryptophan content in chronically tryptophan-deficient and stressed mice.

    Hosung Lee

    Full Text Available Regular exercise has an antidepressant effect in human subjects. Studies using animals have suggested that the antidepressant effect of exercise is attributable to an increase of brain 5-hydroxytryptamine (5-HT; however, the precise mechanism underlying the antidepressant action via exercise is unclear. In contrast, the effect of 5-HT on antidepressant activity has not been clarified, in part because the therapeutic response to antidepressant drugs has a time lag in spite of the rapid increase of brain 5-HT upon administration of these drugs. This study was designed to investigate the contribution of brain 5-HT to the antidepressant effect of exercise. Mice were fed a tryptophan-deficient diet and stressed using chronic unpredictable stress (CUS for 4 weeks with or without the performance of either moderate or intense exercise on a treadmill 3 days per week. The findings demonstrated that the onset of depression-like behavior is attributable not to chronic reduction of 5-HT but to chronic stress. Regular exercise, whether moderate or intense, prevents depression-like behavior with an improvement of adult hippocampal cell proliferation and survival and without the recovery of 5-HT. Concomitantly, the mice that exercised showed increased hippocampal noradrenaline. Regular exercise prevents the impairment of not long-term memory but short-term memory in a 5-HT-reduced state. Together, these findings suggest that: (1 chronic reduction of brain 5-HT may not contribute to the onset of depression-like behavior; (2 regular exercise, whether moderate or intense, prevents the onset of chronic stress-induced depression-like behavior independent of brain 5-HT and dependent on brain adrenaline; and (3 regular exercise prevents chronic tryptophan reduction-induced impairment of not long-term but short-term memory.

  19. What leadership behaviors were demonstrated by the principal in a high poverty, high achieving elementary school?

    E. Hayet J. Woods

    2016-12-01

    Full Text Available Examined through the lens of leadership, were the behaviors of a principal as perceived by stakeholders. The following themes emerged: (1 Educating the Whole Child, with the subthemes: (a providing basic needs; (b academic interventions based on achievement data; (c an emphasis on reading; (d extended academic time; and (e relationships; and (2 Synergy of Expectations, with the subthemes: (a consistent student expectations; (b increased staff accountability; and (c community involvement. The researchers found that the principal by demonstrating behaviors as a change agent, a creator of vision, and a provider of necessary support and strategies, rather than adopting numerous programs, the school personnel were able to increase and sustain academic achievement of the students of poverty as well as their peers. Implications for principal practices, along with leadership preparatory programs are significant.

  20. Attitudes toward E-Cigarettes, Reasons for Initiating E-Cigarette Use, and Changes in Smoking Behavior after Initiation: A Pilot Longitudinal Study of Regular Cigarette Smokers

    Berg, Carla J.; Barr, Dana Boyd; Stratton, Erin; Escoffery, Cam; Kegler, Michelle

    2014-01-01

    Objectives We examined 1) changes in smoking and vaping behavior and associated cotinine levels and health status among regular smokers who were first-time e-cigarette purchasers and 2) attitudes, intentions, and restrictions regarding e-cigarettes. Methods We conducted a pilot longitudinal study with assessments of the aforementioned factors and salivary cotinine at weeks 0, 4, and 8. Eligibility criteria included being ≥18 years old, smoking ≥25 of the last 30 days, smoking ≥5 cigarettes pe...

  1. Self-regulated Learning Behavior of College Students of Art and Their Academic Achievement

    Peng, Cuixin

    This study focuses on the relationship between self-regulated learning behavior and their academic achievement of college students of art. The results show that for students of art, the involvements in self-efficacy, intrinsic value and cognitive strategies are closely tied to their performance in the examination. However, test anxiety, as a negative emotional factor is negatively correlated with academic performance. And among the five variables, self-efficacy has the strongest influence on students of art's academic performance.

  2. Dressed for Success? The Effect of School Uniforms on Student Achievement and Behavior

    Elisabetta Gentile; Imberman, Scott A.

    2011-01-01

    Uniform use in public schools is rising, but we know little about how they affect students. Using a unique dataset from a large urban school district in the southwest United States, we assess how uniforms affect behavior, achievement and other outcomes. Each school in the district determines adoption independently, providing variation over schools and time. By including student and school fixed-effects we find evidence that uniform adoption improves attendance in secondary grades, while in el...

  3. Dressed for Success: Do School Uniforms Improve Student Behavior, Attendance, and Achievement?

    Scott Imberman; Elisabetta Gentile

    2009-01-01

    Concerns about safety in urban schools has led many school districts to require uniforms for their students. However, we know very little about what impact school uniforms have had on the educational environment. In this paper we use a unique dataset to assess how uniform adoption affects student achievement and behavior in a large urban school district in the southwest. Since each school in the district could decide independently about whether or not to adopt uniforms, we are able to use var...

  4. Social and behavioral skills and the gender gap in early educational achievement.

    Diprete, Thomas A; Jennings, Jennifer L

    2012-01-01

    Though many studies have suggested that social and behavioral skills play a central role in gender stratification processes, we know little about the extent to which these skills affect gender gaps in academic achievement. Analyzing data from the Early Child Longitudinal Study-Kindergarten Cohort, we demonstrate that social and behavioral skills have substantively important effects on academic outcomes from kindergarten through fifth grade. Gender differences in the acquisition of these skills, moreover, explain a considerable fraction of the gender gap in academic outcomes during early elementary school. Boys get roughly the same academic return to social and behavioral skills as their female peers, but girls begin school with more advanced social and behavioral skills and their skill advantage grows over time. While part of the effect may reflect an evaluation process that rewards students who better conform to school norms, our results imply that the acquisition of social and behavioral skills enhances learning as well. Our results call for a reconsideration of the family and school-level processes that produce gender gaps in social and behavioral skills and the advantages they confer for academic and later success. PMID:23017693

  5. Psychoticism and disruptive behavior can be also good predictors of school achievement.

    Flores-Mendoza, Carmen; Widaman, Keith; Mansur-Alves, Marcela; Bacelar, Tatiane Dias; Saldanha, Renata

    2013-01-01

    The relations of Gf (Standard Progressive Matrices Raven), Gc (verbal scale of Wechsler Intelligence Scale for Children-Third Version), personality dimensions (Eysenck Personality Questionnaire-Junior Version), and disruptive behavior (TDAH scale) with school achievement (measured by TDE test and PISA test) were investigated. Two samples of students (total N = 534) representing a broad range of socioeconomic status (SES) participated in this study. Path models were conducted. The results demonstrated that (1) in both samples no sex differences related to school achievement were found; (2) in the first sample, after controlling for age and SES differences, Gf and psychoticism predicted (.38 and -.13, respectively) school achievement (measured by TDE test); (3) in the second sample, after controlling for SES differences to which additional measures were administered, Gf and Gc positively predicted (.22 and .40, respectively) school achievement (measured by PISA test). In addition, psychoticism and disruptive behavior also predicted school performance (-.14 and -.28, respectively). Some theoretical and practical implications are discussed. PMID:23866206

  6. Educational achievement, personality, and behavior: assessment, factor structure and implications for theory and practice.

    Gaffney, Tim W; Perryman, Cassandra

    2012-01-01

    The purposes of this research were to first examine the evidence regarding the factor structure of educational achievement tests in the context of two theoretical models of cognitive ability (psychometric g and mutualism) that have been proposed to explain this structure as well as the underlying processes that may be responsible for its emergence in dimensionality studies. Then, the factor structure underlying a sample of the standardized educational achievement tests used by California in its statewide school accountability program was compared to those emerging from a selection of behavioral and personality assessments. As expected, the educational achievement tests exhibited a strong and uniformly positive manifold resulting in greater unidimensionality as evidenced by a dominant general factor in bi-factor analysis then either the personality or behavioral assessments. The implications of these structural differences are discussed with respect to the two theoretical perspective as well as in the context of formative and summative educational inferences in particular, and the school accountability and reform movement in general. PMID:22805361

  7. Adaptive regularization

    Hansen, Lars Kai; Rasmussen, Carl Edward; Svarer, C.;

    1994-01-01

    Regularization, e.g., in the form of weight decay, is important for training and optimization of neural network architectures. In this work the authors provide a tool based on asymptotic sampling theory, for iterative estimation of weight decay parameters. The basic idea is to do a gradient desce...

  8. Evaluation of university students’ academic achievements, web material using behaviors, and attendances in respect to their learning approaches in a blended learning environment

    Feza Orhan

    2011-11-01

    Full Text Available In this study; in a blended learning environment, university students’ academic achievements, web material using behaviors, and attendances to the learning environment are evaluated according to their learning approaches. The subjects participated in the study were 91 university students who enrolled on ‘Instructional Technologies and Material Development’ course. The adapted Turkish version of Biggs, Kember and Leung (2001’s ‘revised 2F Study Process Questionnaire’ was used to reveal the students’ learning approaches. The findings demonstrated that student’ academic achievements, web material using behaviors, and attendances to face to face and Web based learning environments did not show statistically significant differences between deep and surface learners. The results showed that; blended learning environment has a positive effect on academic achievements, using Web based learning environments regularly and attendance to learning environments for both deep and surface learners. Based on the study results; it is recommended to blend the face to face courses with Web based learning to reach more efficient learning environments.

  9. Evaluation of university students’ academic achievements, web material using behaviors, and attendances in respect to their learning approaches in a blended learning environment

    M. Betül Yılmaz

    2011-10-01

    Full Text Available In this study; in a blended learning environment, university students’ academic achievements, web material using behaviors, and attendances to the learning environment are evaluated according to their learning approaches. The subjects participated in the study were 91 university students who enrolled on ‘Instructional Technologies and Material Development’ course. The adapted Turkish version of Biggs, Kember and Leung (2001’s ‘revised 2F Study Process Questionnaire’ was used to reveal the students’ learning approaches. The findings demonstrated that student’ academic achievements, web material using behaviors, and attendances to face to face and Web based learning environments did not show statistically significant differences between deep and surface learners. The results showed that; blended learning environment has a positive effect on academic achievements, using Web based learning environments regularly and attendance to learning environments for both deep and surface learners. Based on the study results; it is recommended to blend the face to face courses with Web based learning to reach more efficient learning environments. 

  10. Long-term evolution of techno-social networks: Statistical regularities, predictability and stability of social behaviors

    Godoy-Lorite, Antonia; Sales-Pardo, Marta

    2016-01-01

    In social networks, individuals constantly drop ties and replace them by new ones in a highly unpredictable fashion. This highly dynamical nature of social ties has important implications for processes such as the spread of information or of epidemics. Several studies have demonstrated the influence of a number of factors on the intricate microscopic process of tie replacement, but the macroscopic long-term effects of such changes remain largely unexplored. Here we investigate whether, despite the inherent randomness at the microscopic level, there are macroscopic statistical regularities in the long-term evolution of social networks. In particular, we analyze the email network of a large organization with over 1,000 individuals throughout four consecutive years. We find that, although the evolution of individual ties is highly unpredictable, the macro-evolution of social communication networks follows well-defined statistical laws, characterized by exponentially decaying log-variations of the weight of socia...

  11. Perceptions of autonomy support, parent attachment, competence and self-worth as predictors of motivational orientation and academic achievement: an examination of sixth- and ninth-grade regular education students.

    Wong, Eugene H; Wiest, Dudley J; Cusick, Lisa B

    2002-01-01

    This project examined the hypothesis that students' perceptions of teacher autonomy support, parent attachment, competence, and self-worth would predict motivational orientation and achievement test performance. Participants were 135 sixth-grade and 91 ninth-grade regular education students from a large, ethnically diverse school district. Stepwise regression analyses indicated that autonomy support, parent attachment, scholastic competence, and self-worth predicted the academic criterion variables. Interestingly, scholastic competence was a significant predictor in all of the regression models. Implications of the findings are discussed in terms of classroom practices. PMID:12144158

  12. Online Self-Regulatory Learning Behaviors as a Mediator in the Relationship between Online Course Perceptions with Achievement

    Valerie Paton; Lucy Barnard; William Lan

    2008-01-01

    Positive perceptions of online course communication and collaboration have been associated with better academic outcomes, while self-regulatory learning behaviors have also been linked to academic achievement and other positive learning outcomes. In the current study, we examined whether self-regulatory learning behaviors may be considered as mediating the relationship between student perceptions of online course communication and collaboration with academic achievement as measured by grade p...

  13. Regular FPGA based on regular fabric

    In the sub-wavelength regime, design for manufacturability (DFM) becomes increasingly important for field programmable gate arrays (FPGAs). In this paper, an automated tile generation flow targeting micro-regular fabric is reported. Using a publicly accessible, well-documented academic FPGA as a case study, we found that compared to the tile generators previously reported, our generated micro-regular tile incurs less than 10% area overhead, which could be potentially recovered by process window optimization, thanks to its superior printability. In addition, we demonstrate that on 45 nm technology, the generated FPGA tile reduces lithography induced process variation by 33%, and reduce probability of failure by 21.2%. If a further overhead of 10% area can be recovered by enhanced resolution, we can achieve the variation reduction of 93.8% and reduce the probability of failure by 16.2%.

  14. Regular FPGA based on regular fabric

    Chen Xun; Zhu Jianwen; Zhang Minxuan

    2011-01-01

    In the sub-wavelength regime,design for manufacturability (DFM) becomes increasingly important for field programmable gate arrays (FPGAs).In this paper,an automated tile generation flow targeting micro-regular fabric is reported.Using a publicly accessible,well-documented academic FPGA as a case study,we found that compared to the tile generators previously reported,our generated micro-regular tile incurs less than 10% area overhead,which could be potentially recovered by process window optimization,thanks to its superior printability.In addition,we demonstrate that on 45 nm technology,the generated FPGA tile reduces lithography induced process variation by 33%,and reduce probability of failure by 21.2%.If a further overhead of 10% area can be recovered by enhanced resolution,we can achieve the variation reduction of 93.8% and reduce the probability of failure by 16.2%.

  15. Regular FPGA based on regular fabric

    Xun, Chen; Jianwen, Zhu; Minxuan, Zhang

    2011-08-01

    In the sub-wavelength regime, design for manufacturability (DFM) becomes increasingly important for field programmable gate arrays (FPGAs). In this paper, an automated tile generation flow targeting micro-regular fabric is reported. Using a publicly accessible, well-documented academic FPGA as a case study, we found that compared to the tile generators previously reported, our generated micro-regular tile incurs less than 10% area overhead, which could be potentially recovered by process window optimization, thanks to its superior printability. In addition, we demonstrate that on 45 nm technology, the generated FPGA tile reduces lithography induced process variation by 33%, and reduce probability of failure by 21.2%. If a further overhead of 10% area can be recovered by enhanced resolution, we can achieve the variation reduction of 93.8% and reduce the probability of failure by 16.2%.

  16. The Effects of the Good Behavior Game on the Conduct of Regular Education New York City High School Students

    Kleinman, Kimberly E.; Saigh, Philip A.

    2011-01-01

    The efficacy of the Good Behavior Game was examined in a multiethnic New York City public high school. Classroom rules were posted and students were divided into two teams. A reinforcement preference questionnaire was used to select daily and weekly prizes. The classroom teacher indicated that he was going to place a check on the board after every…

  17. The role of parents in the ontogeny of achievement-related motivation and behavioral choices.

    Simpkins, Sandra D

    2015-06-01

    Parents believe what they do matters. But, how does it matter? How do parents' beliefs about their children early on translate into the choices those children make as adolescents? The Eccles' expectancy–value model asserts that parents' beliefs about their children during childhood predict adolescents' achievement-related choices through a sequence of processes that operate in a cumulative, cascading fashion over time. Specifically, parents' beliefs predict parents' behaviors that predict their children's motivational beliefs. Those beliefs predict children's subsequent choices. Using data from the Childhood and Beyond Study (92% European American; N = 723), we tested these predictions in the activity domains of sports, instrumental music, mathematics, and reading across a 12-year period. In testing these predictions, we looked closely at the idea of reciprocal influences and at the role of child gender as a moderator. The cross-lagged models generally supported the bidirectional influences described in Eccles' expectancy-value model. Furthermore, the findings demonstrated that: (a) these relations were stronger in the leisure domains than in the academic domains, (b) these relations did not consistently vary based on youth gender, (c) parents were stronger predictors of their children's beliefs than vice versa, and (d) adolescents' beliefs were stronger predictors of their behaviors than the reverse. The findings presented in this monograph extend our understanding of the complexity of families, developmental processes that unfold over time, and the extent to which these processes are universal across domains and child gender. PMID:25943024

  18. Effect of regular surface textures generated by laser on tribological behavior of Si3N4/TiC ceramic

    Xing, Youqiang; Deng, Jianxin; Wu, Ze; Cheng, Hongwei

    2013-01-01

    Two kinds of regular micro-grooved textures with different geometric characteristics were fabricated on the surfaces of Si3N4/TiC ceramics by Nd:YAG laser; friction and wear tests were carried out to investigate the tribological properties of these textured ceramics in unlubricated and MoS2 lubricated conditions. The wear surfaces of the textured ceramics and the balls were examined by SEM and the possible friction reduction and wear resistant mechanisms were discussed. The results show that the friction coefficient of the textured ceramics was reduced compared with the smooth ceramics among all the experiments, the wavy grooves are the most effective in the friction-reduction among the patterns investigated, and the wear life of textured ceramics can be increased in MoS2 lubricated condition. Furthermore, it is observed that the textured ceramics produce more abrasive wear on the ball specimens in unlubricated friction, while it reduces the wear of balls in MoS2 lubricated condition. The main effect mechanism of textures is to capture debris and reduces the contact area of couples in unlubricated condition, and increase lubricant supply by reservoir creation and form the continued lubricating film on the surfaces of spacing between the textures in MoS2 solid lubricated condition.

  19. A Quantitative Assessment of the Effect of Positive Behavior Intervention and Supports on Math Achievement: A Middle School Analysis

    Keane, Marilyn N.

    2012-01-01

    This study examined the relation between implementation of Positive Behavior Intervention and Supports (PBIS) and academic achievement in middle school math as measured by the Maryland State Assessment (MSA). In particular, the correlation of academic achievement in mathematics, grouped by PBIS implementation status to race, socioeconomic status…

  20. Parental Behaviors and Adolescents' Achievement Goals at the Beginning of Middle School: Emotional Problems as Potential Mediators

    Duchesne, Stephane; Ratelle, Catherine

    2010-01-01

    Recent literature on the determinants of academic motivation has shown that parenting and emotions are central elements in understanding students' achievement goals. The authors of this study set out to examine the predictive relationship between parental behaviors during the last year of elementary school and adolescents' achievement goals at the…

  1. The Coopersmith Self-Esteem Inventory Related to Academic Achievement and School Behavior. Interim Research Report # 23.

    Rubin, Rosalyn; And Others

    Scores on the Coopersmith Self-Esteem Inventory were related to scores on achievement and intelligence tests, and to socioeconomic level and to teachers' ratings of student behavior, in order to test the hypothesis that student self esteem would have a positive effect on academic achievement. There was a small but statistically significant…

  2. The Utrecht Healthy School Project: Connecting adolescent health behavior, academic achievement and Health Promoting Schools

    Busch, V.

    2014-01-01

    Unhealthy behaviors contribute to the development of diseases such as diabetes, cardiovascular disease and psychiatric disorders. Most often these behaviors develop in the teenage years. This thesis addresses the following topics: (1) How do health-related behaviors cluster and affect health in adol

  3. Teachers' Behavior and Pupils' Achievement Motivation as Determinants of Intended Helping Behavior in Physical Education

    Kokkonen, Juha A.; Kokkonen, Marja T.; Telama, Risto K.; Liukkonen, Jarmo O.

    2013-01-01

    The present two-wave longitudinal study examined the extent to which physical education (PE) teachers' democratic and socially supportive behavior, pupils' goal orientations, and the perceived motivational climate in PE explained differences in pupils' intended helping behavior by gender in PE classes. The results of 105 boys and…

  4. The Utrecht Healthy School Project: Connecting adolescent health behavior, academic achievement and Health Promoting Schools

    Busch, V.

    2014-01-01

    Unhealthy behaviors contribute to the development of diseases such as diabetes, cardiovascular disease and psychiatric disorders. Most often these behaviors develop in the teenage years. This thesis addresses the following topics: (1) How do health-related behaviors cluster and affect health in adolescents, (2) how do they affect their school performances and (3) are they improved by a Health Promoting School intervention that applies a Whole School Approach? Firstly, it was studied how healt...

  5. Effects of Cooperative Learning on Learning Achievement and Group Working Behavior of Junior Students in Modern French Literature Course

    Orprayoon, Soudaya

    2014-01-01

    This study reported on the results of a quasi-experimental research to explore the effectiveness of using a cooperative learning method on students' academic achievement, their group working behavior and their perception and opinions towards cooperative learning in a Modern French Literature course. The sample included twelve junior students…

  6. Dressed for Success? The Effect of School Uniforms on Student Achievement and Behavior. NBER Working Paper No. 17337

    Gentile, Elisabetta; Imberman, Scott A.

    2011-01-01

    Uniform use in public schools is rising, but we know little about how they affect students. Using a unique dataset from a large urban school district in the southwest United States, we assess how uniforms affect behavior, achievement and other outcomes. Each school in the district determines adoption independently, providing variation over schools…

  7. Academic Achievements, Behavioral Problems, and Loneliness as Predictors of Social Skills among Students with and without Learning Disorders

    Zach, Sima; Yazdi-Ugav, Orly; Zeev, Aviva

    2016-01-01

    This study aimed to examine to what extent academic achievements, learning disorders, behavior problems and loneliness explain the variance of students' social skills. The differences between students diagnosed with learning disorders and students without learning disorders in all four variables were examined. Participants were 733 elementary…

  8. A Cross-Cultural Perspective of Parental Influence on Female Adolescents' Achievement Beliefs and Behaviors in Sport and School Domains

    Bhalla, Jennifer A.; Weiss, Maureen R.

    2010-01-01

    Little is known about parental socialization processes for youth participants from different cultural backgrounds. The purpose of this study was to examine parental influence on self-perceptions, task values, and achievement behaviors among female adolescents from two cultures using Eccles' expectancy-value theory (Eccles et al., 1983). Twelve…

  9. The Role of the Dorsal Anterior Cingulate in Evaluating Behavior for Achieving Gains and Avoiding Losses

    Magno, Elena; Simoes-Franklin, Cristina; Robertson, Ian H.; Garavan, Hugh

    2009-01-01

    Effective goal-directed behavior relies on a network of regions including anterior cingulate cortex and ventral striatum to learn from negative outcomes in order to improve performance. We employed fMRI to determine if this frontal-striatal system is also involved in instances of behavior that do not presume negative circumstances. Participants…

  10. School-Wide Positive Behavior Support: Effects on Pennsylvania High School Achievement, Discipline, and Climate

    Fox, Jon David

    2013-01-01

    Teachers and administrators are faced with managing the behaviors of students while preparing for the high stakes testing associated with the No Child Left Behind Act. One program that has demonstrated positive results at the elementary and middle school level is the school-wide positive behavior support model (SWPBS). Limited research is…

  11. The Effect of General Objectives Defined by Behavioral Objectives on Achievement in a College Zoology Course.

    Rushin, John W.; Baller, William

    1981-01-01

    Tests the effect of developmental level objectives on student achievement and efficiency in a zoology course. These objectives were found to have no significant effect on achievement, but they did significantly increase student efficiency in learning the content material of the module. (Author)

  12. The Role of Occupant Behavior in Achieving Net Zero Energy: A Demonstration Project at Fort Carson

    Judd, Kathleen S.; Sanquist, Thomas F.; Zalesny, Mary D.; Fernandez, Nicholas

    2013-09-30

    This study, sponsored by the U.S. General Services Administration’s Office of Federal High-Performance Green Buildings, aimed to understand the potential for institutional and behavioral change to enhance the performance of buildings, through a demonstration project with the Department of Defense in five green buildings on the Fort Carson, Colorado, Army base. To approach this study, the research team identified specific occupant behaviors that had the potential to save energy in each building, defined strategies that might effectively support behavior change, and implemented a coordinated set of actions during a three-month intervention.

  13. Dimensions of Principal Support Behaviors and Their Relationship to Organizational Citizenship Behaviors and Student Achievement in High Schools

    Tindle, Jennifer A.

    2012-01-01

    This research was designed with the primary purpose of identifying the dimensions of principal support perceived by public high school teachers in Virginia and identifying the relationship between principal support and organizational citizenship behaviors. In addition, this study also examined the relationship between principal support and student…

  14. USE OF VIDEOGAMES AND COMPUTER GAMES: INFLUENCES ON ATTENTION, MEMORY, ACADEMIC ACHIEVEMENT AND PROBLEMS BEHAVIOR

    Harold Germán Rodríguez Celis; Marithza Sandoval Escobar

    2011-01-01

    This study was designed to identify the relationship between video and computergames use on attention, memory, academic performance and problemsbehavior in school children in Bogotá. Memory and attention were assessedusing a set of different scales of ENI Battery (Matute, Rosselli, Ardila, & Ostrosky-Solís, 2007). For Academic performance, school newsletters were used.Behavioral problems were assessed through the CBCL / 6 -18 questionnaire(Child Behavior Checklist) of (Achenbach & Edelbrock, ...

  15. The Effect of Achievement Badges on Students’ Behavior: An Empirical Study in a University-Level Computer Science Course

    Lasse Hakulinen

    2015-02-01

    Full Text Available Achievement badges are a form of gamification that are used in an attempt to increase user engagement and motivation in various systems. A badge is typically a graphical icon that appears as a reward for the user after reaching an achievement but that has no practical value. In this study, we describe and evaluate the use of achievement badges in the ANONYMOUS online learning environment where students solve interactive, automatically assessed exercises in a Data Structures and Algorithms course throughout the semester. We conducted an experiment where the students (N=281 were randomly divided into a treatment and a control group, with and without achievement badges. Students in the treatment group were awarded achievement badges, for example, for solving exercises on the first attempt, doing exercises early, or solving all the exercises in a round with full points. Grading was the same for both groups, i.e. collecting badges did not affect the final grade, even though the exercise points themselves did. Students’ activity in ANONYMOUS was logged in order to find out whether the achievement badges had an effect on their behavior. We also collected numerical and open-ended feedback in order to find out students’ attitudes towards the badges. Our results show that achievement badges can be used to affect students’ behavior. Statistically significant differences were observed in the time used per exercise, number of sessions, total time, and normalized total number of badges. Furthermore, the majority of the students reported being motivated by the badges. Based on our findings, achievement badges seem to be a promising method to motivate students and to encourage desired study practices.

  16. Adaptive regularization of earthquake slip distribution inversion

    Wang, Chisheng; Ding, Xiaoli; Li, Qingquan; Shan, Xinjian; Zhu, Jiasong; Guo, Bo; Liu, Peng

    2016-04-01

    Regularization is a routine approach used in earthquake slip distribution inversion to avoid numerically abnormal solutions. To date, most slip inversion studies have imposed uniform regularization on all the fault patches. However, adaptive regularization, where each retrieved parameter is regularized differently, has exhibited better performances in other research fields such as image restoration. In this paper, we implement an investigation into adaptive regularization for earthquake slip distribution inversion. It is found that adaptive regularization can achieve a significantly smaller mean square error (MSE) than uniform regularization, if it is set properly. We propose an adaptive regularization method based on weighted total least squares (WTLS). This approach assumes that errors exist in both the regularization matrix and observation, and an iterative algorithm is used to solve the solution. A weight coefficient is used to balance the regularization matrix residual and the observation residual. An experiment using four slip patterns was carried out to validate the proposed method. The results show that the proposed regularization method can derive a smaller MSE than uniform regularization and resolution-based adaptive regularization, and the improvement in MSE is more significant for slip patterns with low-resolution slip patches. In this paper, we apply the proposed regularization method to study the slip distribution of the 2011 Mw 9.0 Tohoku earthquake. The retrieved slip distribution is less smooth and more detailed than the one retrieved with the uniform regularization method, and is closer to the existing slip model from joint inversion of the geodetic and seismic data.

  17. Verbal abuse by the teacher and student classroom participation, academic achievement and problem behavior in Tbilisi public schools

    2009-01-01

    Objectives: the present study seeks to determine to what extent is the relationship between verbal abuse by a teacher, class participation, academic achievement and problem behavior in the Tbilisi public schools. Method: Survey design was used and questionnaires were administered to gather information: the “Pupils self-reporting questionnaire of verbal abuse by the teacher” was worked out in the framework of this study. Two well tested questionnaires, “The student participation questionn...

  18. Single Parenthood, Achievement, and Problem Behavior in White, Black, and Hispanic Children

    Ricciuti, Henry N.

    2004-01-01

    The author investigated whether adverse effects of single parenthood not observed in 6-7-year-old NLSY (National Longitudinal Study of Youth) children might emerge when they reached 12-13 years of age. Outcomes included mathematics, reading, vocabulary scores, and behavior problem ratings. Little or no evidence of systematic negative effects…

  19. Connecting Positive Psychology and Organizational Behavior Management: Achievement Motivation and the Power of Positive Reinforcement

    Wiegand, Douglas M.; Geller, E. Scott

    2005-01-01

    Positive psychology is becoming established as a reputable sub-discipline in psychology despite having neglected the role of positive reinforcement in enhancing quality of life. The authors discuss the relevance of positive reinforcement for positive psychology, with implications for broadening the content of organizational behavior management.…

  20. Sexually Harassing Behavior against Adolescent Girls in Rural Bangladesh: Implications for Achieving Millennium Development Goals

    Alam, Nurul; Roy, Swapan K.; Ahmed, Tahmeed

    2010-01-01

    This study examines the extent and type of sexually harassing behavior or intimidations unmarried adolescent girls experienced on their way to school, college or social visits and type of perpetrators in victims' view in rural Bangladesh using data of the 2004 National Nutrition Programme baseline survey. The survey collected self-reported data on…

  1. Organizational Citizenship Behavior, Communication and the Relationship to Student Achievement and School Size

    Henderson, Rebecca R.

    2013-01-01

    This correlational designed study allowed the researcher to examine the relationship between Organizational Citizenship Behavior (OCB) and communication satisfaction on elementary school campuses in one suburban school district in Arizona. Furthermore, this study examined whether differences exists between the level of OCB and communication…

  2. Associations between Early Family Risk, Children's Behavioral Regulation, and Academic Achievement in Portugal

    Cadima, Joana; Gamelas, Ana M.; McClelland, Megan; Peixoto, Carla

    2015-01-01

    Research Findings: This study examined concurrent associations between family sociodemographic risk, self-regulation, and early literacy and mathematics in young children from Azores, Portugal (N = 186). Family sociodemographic risk was indexed by low maternal education, low family income, and low occupational status. Behavioral aspects of…

  3. Using Culturally Competent Responsive Services to Improve Student Achievement and Behavior

    Schellenberg, Rita; Grothaus, Tim

    2011-01-01

    This article illustrates standards blending, the integration of core academic and school counseling standards, as a culturally alert responsive services strategy to assist in closing the achievement gap while also enhancing employability skills and culturally salient career competencies. The responsive services intervention described in this…

  4. Exploring the Complex Relations between Achievement Emotions and Self-Regulated Learning Behaviors in Online Learning

    Artino, Anthony R., Jr.; Jones, Kenneth D., II

    2012-01-01

    Online learning continues to grow, but there is limited empirical research on the personal factors that influence success in online contexts. This investigation addresses this research gap by exploring the relations between several discrete achievement-related emotions (boredom, frustration, and enjoyment) and self-regulated learning behaviors…

  5. Teacher and Principal Perceptions of How Principal Transformational and Instructional Leadership Behaviors Relate to Student Achievement

    Steele, Gayle

    2012-01-01

    Because of public concern over the effectiveness of our schools, a new evaluation system was put in place to hold principals and teachers directly accountable for student academic achievement. Part of this evaluation included student performance on state assessments. The purpose of this qualitative study sought to examine how the transformation…

  6. Dimensional regularization is generic

    Fujikawa, Kazuo

    2016-01-01

    The absence of the quadratic divergence in the Higgs sector of the Standard Model in the dimensional regularization is usually regarded to be an exceptional property of a specific regularization. To understand what is going on in the dimensional regularization, we illustrate how to reproduce the results of the dimensional regularization for the $\\lambda\\phi^{4}$ theory in the more conventional regularization such as the higher derivative regularization; the basic postulate involved is that th...

  7. Maternal IQ, Child IQ, behavior and achievement in urban 5–7 year olds

    Chen, Aimin; Schwarz, Donald; Radcliffe, Jerilynn; Rogan, Walter J.

    2006-01-01

    In one study of children in 27 families with maternal retardation, those children with higher IQ were more likely to have multiple behavior problems than those with lower IQ. If true, this result would affect clinical practice, but it has not been replicated. Since the setting of the initial observation is similar to the setting of childhood lead poisoning, we attempted a replication using data from the Treatment of Lead-exposed Children (TLC) study, in which 780 children aged 12–33 months wi...

  8. The Temporal Effects of Divorces and Separations on Children’s Academic Achievement and Problem Behavior

    Arkes, Jeremy

    2014-01-01

    This paper provides an examination of the effects of the divorce and separation process on children’s academic achievement over time. By using child fixed effects and establishing a baseline period that is 4-or-more years prior to a family disruption, I can examine how children are affected in different periods relative to the disruption and whether any negative effects subside, persist, or escalate as time passes from the disruption. With a sample of 7-14 year olds, I find: children are affe...

  9. FISCAL POLICY OF THE REPUBLIC OF MOLDOVA: ACHIEVEMENTS OF THE FISCAL CONTROL AND ENTITY BEHAVIOR

    Olimpiu GHERMAN

    2015-12-01

    Full Text Available It is an actual theme, determined by achievements of tax control in Moldova and its impact on the behaviour of the entity as important elements of fiscal policy. There are examined different methods for differentiating the problem, supplemented by deduction, induction, synthesis, analysis of defining phenomena of fiscal policy and its elements. The methodology used in this study is based on assessments of the theory, studies and interpretations of specialized literature and analyzes the practical activities specific for taxation at national, European and international levels, depending on which some opinions, conclusions and proposals were founded and formulated, to minimize the impact of tax evasion and fraud.

  10. Sex differences in cognitive regulation of psychosocial achievement stress: brain and behavior.

    Kogler, Lydia; Gur, Ruben C; Derntl, Birgit

    2015-03-01

    Although cognitive regulation of emotion has been extensively examined, there is a lack of studies assessing cognitive regulation in stressful achievement situations. This study used functional magnetic resonance imaging in 23 females and 20 males to investigate cognitive downregulation of negative, stressful sensations during a frequently used psychosocial stress task. Additionally, subjective responses, cognitive regulation strategies, salivary cortisol, and skin conductance response were assessed. Subjective response supported the experimental manipulation by showing higher anger and negative affect ratings after stress regulation than after the mere exposure to stress. On a neural level, right middle frontal gyrus (MFG) and right superior temporal gyrus (STG) were more strongly activated during regulation than nonregulation, whereas the hippocampus was less activated during regulation. Sex differences were evident: after regulation females expressed higher subjective stress ratings than males, and these ratings were associated with right hippocampal activation. In the nonregulation block, females showed greater activation of the left amygdala and the right STG during stress than males while males recruited the putamen more robustly in this condition. Thus, cognitive regulation of stressful achievement situations seems to induce additional stress, to recruit regions implicated in attention integration and working memory and to deactivate memory retrieval. Stress itself is associated with greater activation of limbic as well as attention areas in females than males. Additionally, activation of the memory system during cognitive regulation of stress is associated with greater perceived stress in females. Sex differences in cognitive regulation strategies merit further investigation that can guide sex sensitive interventions for stress-associated disorders. PMID:25376429

  11. An Analysis of Java Programming Behaviors, Affect, Perceptions, and Syntax Errors among Low-Achieving, Average, and High-Achieving Novice Programmers

    Rodrigo, Ma. Mercedes T.; Andallaza, Thor Collin S.; Castro, Francisco Enrique Vicente G.; Armenta, Marc Lester V.; Dy, Thomas T.; Jadud, Matthew C.

    2013-01-01

    In this article we quantitatively and qualitatively analyze a sample of novice programmer compilation log data, exploring whether (or how) low-achieving, average, and high-achieving students vary in their grasp of these introductory concepts. High-achieving students self-reported having the easiest time learning the introductory programming…

  12. The Financial Debacle Necessitates a Systematic Approach to Achieving Ethical Behavior in the Corporate Workplace

    Clifton Clarke

    2014-09-01

    Full Text Available The current vitriolic discourse over the financial scandals implicating Wall Street and its satellite institutions dictates a fresh look at strategies intended to eradicate or prevent unethical practices in business activities. The spate of recently published unethical behavior among business executives in the United States confirms, unequivocally, that past and current strategies have failed. This paper reviews and evaluates the impact of some of these strategies. It found that the strategies focus on legislation, written corporate codes of ethics and assorted activities in business schools. It found that these strategies are largely isolated and missed the fact that unethical business conduct is systemic, reflecting the ethical lapses of two systems: a public system (consisting of governmental bodies, business schools, and the general citizenry and a corporate system (consisting of boards of directors, executives, managers and employees. It found that there is a significant gap between the rhetoric of corporate executives and their attention to unethical conduct in the workplace. It concludes that isolated legislative actions, apathetic business schools’ policies, complacent and complicit corporate boards, contribute to the failure. It also concludes that, the implementation of business ethics in the workplace requires a transformation of attitude within and between these systems and posits that a system approach is the only strategy that can successfully transform these systems and that business schools are uniquely capable of leading this transformation.

  13. Features and regularities in behavior of thermoelectric properties of rare-earth, transition, and other metals under high pressure up to 20 GPa

    Morozova, Natalia V.; Shchennikov, Vladimir V. [M. N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences, 18 S. Kovalevskaya Str., Yekaterinburg 620137 (Russian Federation); Ovsyannikov, Sergey V., E-mail: sergey.ovsyannikov@uni-bayreuth.de, E-mail: sergey2503@gmail.com [Bayerisches Geoinstitut, Universität Bayreuth, Universitätsstrasse 30, Bayreuth D-95447 (Germany); Institute for Solid State Chemistry of Ural Branch of Russian Academy of Sciences, 91 Pervomayskaya Str., Yekaterinburg 620990 (Russian Federation)

    2015-12-14

    We report results of systematic investigations of the thermoelectric properties of a number of rare-earth metals, transition metals, and other metals under high pressure up to 20 GPa at room temperature. We studied an effect of applied pressure on the Seebeck effect of scandium (Sc), yttrium (Y), lanthanum (La), europium (Eu), ytterbium (Yb), iron (Fe), manganese (Mn), chromium (Cr), gold (Au), tin (Sn), and CeNi alloy. We found that the high-pressure behavior of the thermopower of three rare-earth metals, namely, Sc, Y, and La, follows a general trend that has been established earlier in lanthanides, and addressed to a s → d electron transfer. Europium and ytterbium, on the contrary, showed a peculiar high-pressure behavior of the thermopower with peaks at near 0.7–1 GPa for Eu and 1.7–2.5 GPa for Yb. Chromium, manganese, and tin demonstrated a gradual and pronounced lowering of the absolute value of the thermopower with pressure. Above 9–11 GPa, the Seebeck coefficients of Mn and Sn were inverted, from n- to p-type for Mn and from p- to n-type for Sn. The Seebeck effect in iron was rather high as ∼16 μV/K and weakly varied with pressure up to ∼11 GPa. Above ∼11 GPa, it started to drop dramatically with pressure to highest pressure achieved 18 GPa. Upon decompression cycle the thermopower of iron returned to the original high values but demonstrated a wide hysteresis loop. We related this behavior in iron to the known bcc (α-Fe) → hcp (ε-Fe) phase transition, and proposed that the thermoelectricity of the α-Fe phase is mainly contributed by the spin Seebeck effect, likewise, the thermoelectricity of the ε-Fe phase—by the conventional diffusion thermopower. We compare the pressure dependencies of the thermopower for different groups of metals and figure out some general trends in the thermoelectricity of metals under applied stress.

  14. Features and regularities in behavior of thermoelectric properties of rare-earth, transition, and other metals under high pressure up to 20 GPa

    We report results of systematic investigations of the thermoelectric properties of a number of rare-earth metals, transition metals, and other metals under high pressure up to 20 GPa at room temperature. We studied an effect of applied pressure on the Seebeck effect of scandium (Sc), yttrium (Y), lanthanum (La), europium (Eu), ytterbium (Yb), iron (Fe), manganese (Mn), chromium (Cr), gold (Au), tin (Sn), and CeNi alloy. We found that the high-pressure behavior of the thermopower of three rare-earth metals, namely, Sc, Y, and La, follows a general trend that has been established earlier in lanthanides, and addressed to a s → d electron transfer. Europium and ytterbium, on the contrary, showed a peculiar high-pressure behavior of the thermopower with peaks at near 0.7–1 GPa for Eu and 1.7–2.5 GPa for Yb. Chromium, manganese, and tin demonstrated a gradual and pronounced lowering of the absolute value of the thermopower with pressure. Above 9–11 GPa, the Seebeck coefficients of Mn and Sn were inverted, from n- to p-type for Mn and from p- to n-type for Sn. The Seebeck effect in iron was rather high as ∼16 μV/K and weakly varied with pressure up to ∼11 GPa. Above ∼11 GPa, it started to drop dramatically with pressure to highest pressure achieved 18 GPa. Upon decompression cycle the thermopower of iron returned to the original high values but demonstrated a wide hysteresis loop. We related this behavior in iron to the known bcc (α-Fe) → hcp (ε-Fe) phase transition, and proposed that the thermoelectricity of the α-Fe phase is mainly contributed by the spin Seebeck effect, likewise, the thermoelectricity of the ε-Fe phase—by the conventional diffusion thermopower. We compare the pressure dependencies of the thermopower for different groups of metals and figure out some general trends in the thermoelectricity of metals under applied stress

  15. Supersymmetric dimensional regularization

    A generalized scheme of dimensional regularization which preserves supersymmetry is proposed. The scheme is applicable to all supersymmetric theories. Two models with extended supersymmetry are considered. The Slavnov naive supersymmetric identities are shown to hold at a dimensional regularized level

  16. Hamiltonian Strongly Regular Graphs

    Brouwer, A.E.; Haemers, W.H.

    2008-01-01

    We give a sufficient condition for a distance-regular graph to be Hamiltonian. In particular, the Petersen graph is the only connected non-Hamiltonian strongly regular graph on fewer than 99 vertices.

  17. NOETHERIAN GR-REGULAR RINGS ARE REGULAR

    LIHUISHI

    1994-01-01

    It is proved that for a left Noetherian z-graded ring A,if every finitely generated graded A-module has finite projective dimension(i.e-,A is gr-regular)then every finitely generated A-module has finite projective dimension(i.e.,A is regular).Some applications of this result to filtered rings and some classical cases are also given.

  18. Regular Moderate or Intense Exercise Prevents Depression-Like Behavior without Change of Hippocampal Tryptophan Content in Chronically Tryptophan-Deficient and Stressed Mice

    Lee, Hosung; Ohno, Makoto; Ohta, Shigeo; Mikami, Toshio

    2013-01-01

    Regular exercise has an antidepressant effect in human subjects. Studies using animals have suggested that the antidepressant effect of exercise is attributable to an increase of brain 5-hydroxytryptamine (5-HT); however, the precise mechanism underlying the antidepressant action via exercise is unclear. In contrast, the effect of 5-HT on antidepressant activity has not been clarified, in part because the therapeutic response to antidepressant drugs has a time lag in spite of the rapid increa...

  19. Regular Expression Pocket Reference

    Stubblebine, Tony

    2007-01-01

    This handy little book offers programmers a complete overview of the syntax and semantics of regular expressions that are at the heart of every text-processing application. Ideal as a quick reference, Regular Expression Pocket Reference covers the regular expression APIs for Perl 5.8, Ruby (including some upcoming 1.9 features), Java, PHP, .NET and C#, Python, vi, JavaScript, and the PCRE regular expression libraries. This concise and easy-to-use reference puts a very powerful tool for manipulating text and data right at your fingertips. Composed of a mixture of symbols and text, regular exp

  20. Deforming regular black holes

    Neves, J C S

    2015-01-01

    In this work, we have deformed regular black holes which possess a general mass term described by a function which generalizes the Bardeen and Hayward mass terms. Using linear constraints in the energy-momentum tensor, the solutions are either regular or singular. That is, with this approach, it is possible to generate singular black holes from regular black holes and vice versa. Moreover, contrary to the Bardeen and Hayward regular solutions, the regular deformed metrics may violate the weak energy condition despite the presence of the spherical symmetry. Some comments on accretion of deformed black holes in cosmological scenarios are made.

  1. Dimensional regularization is generic

    Fujikawa, Kazuo

    2016-01-01

    The absence of the quadratic divergence in the Higgs sector of the Standard Model in the dimensional regularization is usually regarded to be an exceptional property of a specific regularization. To understand what is going on in the dimensional regularization, we illustrate how to reproduce the results of the dimensional regularization for the $\\lambda\\phi^{4}$ theory in the more conventional regularization such as the higher derivative regularization; the basic postulate involved is that the quadratically divergent induced mass, which is independent of the scale change of the physical mass, is kinematical and unphysical. This is consistent with the derivation of the Callan-Symanzik equation, which is a comparison of two theories with slightly different masses, for the $\\lambda\\phi^{4}$ theory without encountering the quadratic divergence. We thus suggest that the dimensional regularization is generic in a bottom-up approach starting with a successful low-energy theory. We also define a modified version of t...

  2. Regularity of eigenstates in regular Mourre theory

    Møller, Jacob Schach; Westrich, Matthias

    2011-01-01

    . The only requirement is Ck+1(A) regularity of H. Regarding integer k, our result is optimal. Under a natural boundedness assumption of the multiple commutators we prove that the eigenstate ‘dilated’ by exp(iθA) is analytic in a strip around the real axis. In particular, the eigenstate is an analytic...

  3. The relationship among teacher classroom management behavior, student engagement, and student achievement of middle and high school science students of varying aptitude

    McGarity, John R., Jr.; Butts, David P.

    This study was designed to determine the relationship among teacher classroom management behavior, student engagement, and student achievement of middle and high school science students. These variables were investigated across varying levels of academic aptitude. Two week long units were taught by 30 experienced science teachers. During this period of time teacher classroom management behavior, student achievement (n = 570), student engagement (n = 269), and student academic aptitude (n = 649) were measured. Twelve selected management indicators from Georgia Teachers Performance Assessment Indicators (TPAI) were used to measure teacher classroom management behaviors. Regression analysis was used to determine the relationship between the variables, and appropriate post hoc procedures were used. Analyses showed that there was a significant relationship among all variables. Post hoc analysis showed that these results were consistent across levels of aptitude. Other relationships found were between student engagement and achievement, student aptitude and achievement, and student aptitude and engagement. Correlation coefficients were obtained for each individual management indicators. Those particular management behaviors which were correlated with achievement and engagement are: identifies students who do not understand directions and helps them individually, maintains learner involvement in lessons, reinforces and encourages the efforts of learners to maintain involvement, attends to routine tasks, uses instructional time efficiently, provides feedback to learners about their behavior, manages disruptive behavior among learners.

  4. Extending the theory of planned behavior: the role of self and social influences in predicting adolescent regular moderate-to-vigorous physical activity.

    Hamilton, Kyra; White, Katherine M

    2008-02-01

    The current study aimed to test the validity of an extended theory of planned behavior model (TPB; Ajzen, 1991), incorporating additional self and social influences, for predicting adolescent moderate-to-vigorous physical activity. Participants (N = 423) completed an initial questionnaire that assessed the standard TPB constructs of attitude, subjective norm, and perceived behavioral control, as well as past behavior, self-identity, and the additional social influence variables of group norms, family social support, friends' social support, and social provisions. One week after completion of the main questionnaire, participants completed a follow-up questionnaire that assessed self-reported physical activity during the previous week. The standard TPB variable--past behavior, self-identity, and group norms, but not social support influences--predicted intentions, with intention, past behavior, and self-identity predicting behavior. Overall, the results provide support for an extended version of the TPB incorporating self-identity and those social influences linked explicitly to membership of a behaviorally relevant reference group. PMID:18369243

  5. Low power implementation of datapath using regularity

    LAI Li-ya; LIU Peng

    2005-01-01

    Datapath accounts for a considerable part of power consumption in VLSI circuit design. This paper presents a method for physical implementation of datapath to achieve low power consumption. Regularity is a characteristic of datapath and the key of the proposed method, where synthesis is tightly combined with placement to make full use of regularity, so that low power consumption is achieved. In This paper, a new concept of Synthesis In Relative Placement (SIRP) is given to deal with the semi-regularity in some datapath. Experimental results of a sample circuit validated the proposed method.

  6. Regular expressions cookbook

    Goyvaerts, Jan

    2009-01-01

    This cookbook provides more than 100 recipes to help you crunch data and manipulate text with regular expressions. Every programmer can find uses for regular expressions, but their power doesn't come worry-free. Even seasoned users often suffer from poor performance, false positives, false negatives, or perplexing bugs. Regular Expressions Cookbook offers step-by-step instructions for some of the most common tasks involving this tool, with recipes for C#, Java, JavaScript, Perl, PHP, Python, Ruby, and VB.NET. With this book, you will: Understand the basics of regular expressions through a

  7. Coarse- and fine-grid numerical behavior of MRT/TRT lattice-Boltzmann schemes in regular and random sphere packings

    Khirevich, Siarhei; Ginzburg, Irina; Tallarek, Ulrich

    2015-01-01

    We analyze the intrinsic impact of free-tunable combinations of the relaxation rates controlling viscosity-independent accuracy of the multiple-relaxation-times (MRT) lattice-Boltzmann models. Preserving all MRT degrees of freedom, we formulate the parametrization conditions which enable the MRT schemes to provide viscosity-independent truncation errors for steady state solutions, and support them with the second- and third-order accurate ("linear" and "parabolic", respectively) boundary schemes. The parabolic schemes demonstrate the advanced accuracy with weak dependency on the relaxation rates, as confirmed by the simulations with the D3Q15 model in three regular arrays (SC, BCC, FCC) of touching spheres. Yet, the low-order, bounce-back boundary rule remains appealing for pore-scale simulations where the precise distance to the boundaries is undetermined. However, the effective accuracy of the bounce-back crucially depends on the free-tunable combinations of the relaxation rates. We find that the combinations of the kinematic viscosity rate with the available "ghost" antisymmetric collision mode rates mainly impact the accuracy of the bounce-back scheme. As the first step, we reduce them to the one combination (presented by so-called "magic" parameter Λ in the frame of the two-relaxation-times (TRT) model), and study its impact on the accuracy of the drag force/permeability computations with the D3Q19 velocity set in two different, dense, random packings of 8000 spheres each. We also run the simulations in the regular (BCC and FCC) packings of the same porosity for the broad range of the discretization resolutions, ranging from 5 to 750 lattice nodes per sphere diameter. A special attention is given to the discretization procedure resulting in significantly reduced scatter of the data obtained at low resolutions. The results reveal the identical Λ-dependency versus the discretization resolution in all four packings, regular and random. While very small

  8. Increasing On-Task Behavior in Students in a Regular Classroom: Effectiveness of a Self-Management Procedure Using a Tactile Prompt

    Moore, Dennis W.; Anderson, Angelika; Glassenbury, Michele; Lang, Russell; Didden, Robert

    2013-01-01

    Self-management strategies have been shown to be widely effective. However, limited classroom-based research exists involving low performing but developmentally normal high school-aged participants. This study examined the effectiveness of a self-management strategy aimed at increasing on-task behavior in general education classrooms with students…

  9. Self-Management for Primary School Students Demonstrating Problem Behavior in Regular Classrooms: Evidence Review of Single-Case Design Research

    Busacca, Margherita L.; Anderson, Angelika; Moore, Dennis W.

    2015-01-01

    This review evaluates self-management literature targeting problem behaviors of primary school students in general education settings. Thirty-one single-case design studies met inclusion criteria, of which 16 demonstrated adequate methodological rigor, according to What Works Clearinghouse (WWC) design standards. Visual analysis and WWC…

  10. The Effects of the Children Having Incarcerated Parents Succeeding Group on Delinquent Behavior, Academic Achievement, Self-Esteem, Attendance and Aggressive Behavior with Seventh and Eighth Grade Students Who Have Incarcerated Parents or Guardians

    King-White, Dakota L.

    2012-01-01

    A sample of middle school students was investigated to determine whether an intervention group called Children Having Incarcerated Parents (C.H.I.P.S.; King-White & Lipford-Sanders, 2007) was an effective intervention for delinquent behavior, academic achievement, self-esteem, attendance, and aggressive behavior in children of incarcerated…

  11. Maximum mutual information regularized classification

    Wang, Jim Jing-Yan

    2014-09-07

    In this paper, a novel pattern classification approach is proposed by regularizing the classifier learning to maximize mutual information between the classification response and the true class label. We argue that, with the learned classifier, the uncertainty of the true class label of a data sample should be reduced by knowing its classification response as much as possible. The reduced uncertainty is measured by the mutual information between the classification response and the true class label. To this end, when learning a linear classifier, we propose to maximize the mutual information between classification responses and true class labels of training samples, besides minimizing the classification error and reducing the classifier complexity. An objective function is constructed by modeling mutual information with entropy estimation, and it is optimized by a gradient descend method in an iterative algorithm. Experiments on two real world pattern classification problems show the significant improvements achieved by maximum mutual information regularization.

  12. Regular Expression Containment

    Henglein, Fritz; Nielsen, Lasse

    2011-01-01

    We present a new sound and complete axiomatization of regular expression containment. It consists of the conventional axiomatiza- tion of concatenation, alternation, empty set and (the singleton set containing) the empty string as an idempotent semiring, the fixed- point rule E* = 1 + E × E* for...... Kleene-star, and a general coin- duction rule as the only additional rule. Our axiomatization gives rise to a natural computational inter- pretation of regular expressions as simple types that represent parse trees, and of containment proofs as coercions. This gives the axiom- atization a Curry......-Howard-style constructive interpretation: Con- tainment proofs do not only certify a language-theoretic contain- ment, but, under our computational interpretation, constructively transform a membership proof of a string in one regular expres- sion into a membership proof of the same string in another regular expression. We...

  13. Regularized maximum correntropy machine

    Wang, Jim Jing-Yan

    2015-02-12

    In this paper we investigate the usage of regularized correntropy framework for learning of classifiers from noisy labels. The class label predictors learned by minimizing transitional loss functions are sensitive to the noisy and outlying labels of training samples, because the transitional loss functions are equally applied to all the samples. To solve this problem, we propose to learn the class label predictors by maximizing the correntropy between the predicted labels and the true labels of the training samples, under the regularized Maximum Correntropy Criteria (MCC) framework. Moreover, we regularize the predictor parameter to control the complexity of the predictor. The learning problem is formulated by an objective function considering the parameter regularization and MCC simultaneously. By optimizing the objective function alternately, we develop a novel predictor learning algorithm. The experiments on two challenging pattern classification tasks show that it significantly outperforms the machines with transitional loss functions.

  14. Recurrent Neural Network Regularization

    Zaremba, Wojciech; Sutskever, Ilya; Vinyals, Oriol

    2014-01-01

    We present a simple regularization technique for Recurrent Neural Networks (RNNs) with Long Short-Term Memory (LSTM) units. Dropout, the most successful technique for regularizing neural networks, does not work well with RNNs and LSTMs. In this paper, we show how to correctly apply dropout to LSTMs, and show that it substantially reduces overfitting on a variety of tasks. These tasks include language modeling, speech recognition, image caption generation, and machine translation.

  15. Regularities of Multifractal Measures

    Hun Ki Baek

    2008-05-01

    First, we prove the decomposition theorem for the regularities of multifractal Hausdorff measure and packing measure in $\\mathbb{R}^d$. This decomposition theorem enables us to split a set into regular and irregular parts, so that we can analyze each separately, and recombine them without affecting density properties. Next, we give some properties related to multifractal Hausdorff and packing densities. Finally, we extend the density theorem in [6] to any measurable set.

  16. Accretion onto some well-known regular black holes

    Jawad, Abdul; Shahzad, M. Umair

    2016-03-01

    In this work, we discuss the accretion onto static spherically symmetric regular black holes for specific choices of the equation of state parameter. The underlying regular black holes are charged regular black holes using the Fermi-Dirac distribution, logistic distribution, nonlinear electrodynamics, respectively, and Kehagias-Sftesos asymptotically flat regular black holes. We obtain the critical radius, critical speed, and squared sound speed during the accretion process near the regular black holes. We also study the behavior of radial velocity, energy density, and the rate of change of the mass for each of the regular black holes.

  17. Accretion onto some well-known regular black holes

    Jawad, Abdul; Shahzad, M.U. [COMSATS Institute of Information Technology, Department of Mathematics, Lahore (Pakistan)

    2016-03-15

    In this work, we discuss the accretion onto static spherically symmetric regular black holes for specific choices of the equation of state parameter. The underlying regular black holes are charged regular black holes using the Fermi-Dirac distribution, logistic distribution, nonlinear electrodynamics, respectively, and Kehagias-Sftesos asymptotically flat regular black holes. We obtain the critical radius, critical speed, and squared sound speed during the accretion process near the regular black holes. We also study the behavior of radial velocity, energy density, and the rate of change of the mass for each of the regular black holes. (orig.)

  18. Accretion onto Some Well-Known Regular Black Holes

    Jawad, Abdul

    2016-01-01

    In this work, we discuss the accretion onto static spherical symmetric regular black holes for specific choices of equation of state parameter. The underlying regular black holes are charged regular black hole using Fermi-Dirac Distribution, logistic distribution, nonlinear electrodynamics, respectively and Kehagias-Sftesos asymptotically flat regular black hole. We obtain the critical radius, critical speed and squared sound speed during the accretion process near the regular black holes. We also study the behavior of radial velocity, energy density and rate of change of mass for each regular black holes.

  19. Accretion onto some well-known regular black holes

    In this work, we discuss the accretion onto static spherically symmetric regular black holes for specific choices of the equation of state parameter. The underlying regular black holes are charged regular black holes using the Fermi-Dirac distribution, logistic distribution, nonlinear electrodynamics, respectively, and Kehagias-Sftesos asymptotically flat regular black holes. We obtain the critical radius, critical speed, and squared sound speed during the accretion process near the regular black holes. We also study the behavior of radial velocity, energy density, and the rate of change of the mass for each of the regular black holes. (orig.)

  20. Regularized degenerate multi-solitons

    Correa, Francisco

    2016-01-01

    We report complex PT-symmetric multi-soliton solutions to the Korteweg de-Vries equation that asymptotically contain one-soliton solutions, with each of them possessing the same amount of finite real energy. We demonstrate how these solutions originate from degenerate energy solutions of the Schroedinger equation. Technically this is achieved by the application of Darboux-Crum transformations involving Jordan states with suitable regularizing shifts. Alternatively they may be constructed from a limiting process within the context Hirota's direct method or on a nonlinear superposition obtained from multiple Baecklund transformations. The proposed procedure is completely generic and also applicable to other types of nonlinear integrable systems.

  1. Maternal Work Early in the Lives of Children and Its Distal Associations with Achievement and Behavior Problems: A Meta-Analysis

    Lucas-Thompson, Rachel G.; Goldberg, Wendy A.; Prause, JoAnn

    2010-01-01

    This meta-analysis of 69 studies (1,483 effect sizes) used random effects models to examine maternal employment during infancy/early childhood in relation to 2 major domains of child functioning: achievement and behavior problems. Analyses of studies that spanned 5 decades indicated that, with a few exceptions, early employment was not…

  2. The Effects of Maternal Parenting Style and Religious Commitment on Self-Regulation, Academic Achievement, and Risk Behavior among African-American Parochial College Students

    Abar, Beau; Carter, Kermit L.; Winsler, Adam

    2009-01-01

    This study explored relations between religiosity, both parent and student, and maternal parenting style and student academic self-regulation, academic achievement, and risk behavior among African-American youth attending a parochial college. Eighty-five students completed self-report survey measures of religiosity, self-regulation, academic…

  3. Health Behavior and Academic Achievement among Adolescents: The Relative Contribution of Dietary Habits, Physical Activity, Body Mass Index, and Self-Esteem

    Kristjansson, Alfgeir Logi; Sigfusdottir, Inga Dora; Allegrante, John P.

    2010-01-01

    This study tested a structural equation model to estimate the relationship between health behaviors, body mass index (BMI), and self-esteem and the academic achievement of adolescents. The authors analyzed survey data from the 2000 study of "Youth in Iceland", a population-based, cross-sectional sample of 6,346 adolescents in Iceland. The model…

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

    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…

  5. Pairing effect and misleading regularity

    Al-Sayed, A.

    2015-11-01

    We study the nearest neighbor spacing distribution of energy levels of even-even nuclei classified according to their reduced electric quadrupole transition probability B (E2) ↑ using the available experimental data. We compare between Brody, and Abul-Magd distributions that extract the degree of chaoticity within nuclear dynamics. The results show that Abul-Magd parameter f can represents the chaotic behavior in more acceptable way than Brody, especially if a statistically significant study is desired. A smooth transition from chaos to order is observed as B (E2) ↑ increases. An apparent regularity was located at the second interval, namely: at 0.05 ≤ B (E2) Weisskopf unit. Finally, the chaotic behavior parameterized in terms of B (E2) ↑ does not depend on the unit used.

  6. Language Skills, Mathematical Thinking, and Achievement Motivation in Children with ADHD, Disruptive Behavior Disorders, and Normal Controls

    Gut, Janine; Heckmann, Carmen; Meyer, Christine Sandra; Schmid, Marc; Grob, Alexander

    2012-01-01

    Recent models of attention deficit/hyperactivity disorder (ADHD) suggest that the association between achievement motivation and school performance may be stronger in children with ADHD than in typically developing children. Therefore, the present study investigated associations between achievement motivation and performance on language skills and…

  7. Regularization of current algebra

    Mickelsson, J

    1993-01-01

    In this talk I want to explain the operator substractions needed to regularize gauge currents in a second quantized theory. The case of space-time dimension $3+1$ is considered in detail. In presence of chiral fermions the regularization effects a modification of the local commutation relations of the currents by local Schwinger terms. In $1+1$ dimensions one gets the usual central extension (Schwinger term does not depend on background gauge field) whereas in $3+1$ dimensions one gets an anomaly linear in the background potential.

  8. Regularity of Bound States

    Faupin, Jeremy; Møller, Jacob Schach; Skibsted, Erik

    2011-01-01

    We study regularity of bound states pertaining to embedded eigenvalues of a self-adjoint operator H, with respect to an auxiliary operator A that is conjugate to H in the sense of Mourre. We work within the framework of singular Mourre theory which enables us to deal with confined massless Pauli......–Fierz models, our primary example, and many-body AC-Stark Hamiltonians. In the simpler context of regular Mourre theory, our results boil down to an improvement of results obtained recently in [8, 9]....

  9. Regular subspaces of Dirichlet forms

    Li, Liping; Ying, Jiangang

    2015-01-01

    The regular subspaces of a Dirichlet form are the regular Dirichlet forms that inherit the original form but possess smaller domains. The two problems we are concerned are: (1) the existence of regular subspaces of a fixed Dirichlet form, (2) the characterization of the regular subspaces if exists. In this paper, we will first research the structure of regular subspaces for a fixed Dirichlet form. The main results indicate that the jumping and killing measures of each regular subspace are jus...

  10. Maternal work early in the lives of children and its distal associations with achievement and behavior problems: a meta-analysis.

    Lucas-Thompson, Rachel G; Goldberg, Wendy A; Prause, JoAnn

    2010-11-01

    This meta-analysis of 69 studies (1,483 effect sizes) used random effects models to examine maternal employment during infancy/early childhood in relation to 2 major domains of child functioning: achievement and behavior problems. Analyses of studies that spanned 5 decades indicated that, with a few exceptions, early employment was not significantly associated with later achievement or internalizing/externalizing behaviors. The exceptions were for teacher ratings of achievement and internalizing behaviors: Employment was associated with higher achievement and fewer internalizing behaviors. Substantial heterogeneity among the effect sizes prompted examination of moderators. Sample-level moderator analyses pointed to the importance of socioeconomic and contextual variables, with early employment most beneficial when families were challenged by single parenthood or welfare status. Maternal employment during Years 2 and 3 was associated with higher achievement. Some moderator analyses indicated negative effects of employment for middle-class and 2-parent families and for very early employment (child's first year). Associations also differed depending on whether effect sizes were adjusted for contextual variables. Only 1 study-level moderator (sex of first author) was significant after adjusting for other moderators. The small effect size and primarily nonsignificant results for main effects of early maternal employment should allay concerns about mothers working when children are young. However, negative findings associated with employment during the child's first year are compatible with calls for more generous maternal leave policies. Results highlight the importance of social context for identifying under which conditions and for which subgroups early maternal employment is associated with positive or negative child outcomes. PMID:20919797

  11. Multiple graph regularized protein domain ranking

    Wang, Jim Jing-Yan

    2012-11-19

    Background: Protein domain ranking is a fundamental task in structural biology. Most protein domain ranking methods rely on the pairwise comparison of protein domains while neglecting the global manifold structure of the protein domain database. Recently, graph regularized ranking that exploits the global structure of the graph defined by the pairwise similarities has been proposed. However, the existing graph regularized ranking methods are very sensitive to the choice of the graph model and parameters, and this remains a difficult problem for most of the protein domain ranking methods.Results: To tackle this problem, we have developed the Multiple Graph regularized Ranking algorithm, MultiG-Rank. Instead of using a single graph to regularize the ranking scores, MultiG-Rank approximates the intrinsic manifold of protein domain distribution by combining multiple initial graphs for the regularization. Graph weights are learned with ranking scores jointly and automatically, by alternately minimizing an objective function in an iterative algorithm. Experimental results on a subset of the ASTRAL SCOP protein domain database demonstrate that MultiG-Rank achieves a better ranking performance than single graph regularized ranking methods and pairwise similarity based ranking methods.Conclusion: The problem of graph model and parameter selection in graph regularized protein domain ranking can be solved effectively by combining multiple graphs. This aspect of generalization introduces a new frontier in applying multiple graphs to solving protein domain ranking applications. 2012 Wang et al; licensee BioMed Central Ltd.

  12. Multiple graph regularized protein domain ranking

    Wang Jim

    2012-11-01

    Full Text Available Abstract Background Protein domain ranking is a fundamental task in structural biology. Most protein domain ranking methods rely on the pairwise comparison of protein domains while neglecting the global manifold structure of the protein domain database. Recently, graph regularized ranking that exploits the global structure of the graph defined by the pairwise similarities has been proposed. However, the existing graph regularized ranking methods are very sensitive to the choice of the graph model and parameters, and this remains a difficult problem for most of the protein domain ranking methods. Results To tackle this problem, we have developed the Multiple Graph regularized Ranking algorithm, MultiG-Rank. Instead of using a single graph to regularize the ranking scores, MultiG-Rank approximates the intrinsic manifold of protein domain distribution by combining multiple initial graphs for the regularization. Graph weights are learned with ranking scores jointly and automatically, by alternately minimizing an objective function in an iterative algorithm. Experimental results on a subset of the ASTRAL SCOP protein domain database demonstrate that MultiG-Rank achieves a better ranking performance than single graph regularized ranking methods and pairwise similarity based ranking methods. Conclusion The problem of graph model and parameter selection in graph regularized protein domain ranking can be solved effectively by combining multiple graphs. This aspect of generalization introduces a new frontier in applying multiple graphs to solving protein domain ranking applications.

  13. Assessing learning achievement, time effort, learning approaches and tempo during learning within the experiment-based behavioral task LAsO – reliability and incremental validity

    REBECCA FILL GIORDANO

    2009-09-01

    Full Text Available The assessment of aspects of learning potential like learning achievement and approaches in our days of life long learning is interesting for an appraisal of aptitude and the identification of high- and low-potentials. Due to the reported problems concerning the predictive validity of common instruments, we used the new experiment-based behavioral task LAsO for an assessment of learning achievement, time effort, learning approaches and tempo during learning based on a micro analytic action research. We analysed reliability and incremental validity on a sample of 322 apprentices. Beneath the valuated behavior by the formation team and a short scale for conscientiousness, the integration of the LAsO-scores into two block binary logistic regression analyses revealed, that the LAsO-scores are significant predictors for high- and low-potentials and therefore provide increment predictive validity.

  14. The geometry of continuum regularization

    This lecture is primarily an introduction to coordinate-invariant regularization, a recent advance in the continuum regularization program. In this context, the program is seen as fundamentally geometric, with all regularization contained in regularized DeWitt superstructures on field deformations

  15. Evaluation of university students’ academic achievements, web material using behaviors, and attendances in respect to their learning approaches in a blended learning environment

    M. Betül Yılmaz; Feza Orhan

    2011-01-01

    In this study; in a blended learning environment, university students’ academic achievements, web material using behaviors, and attendances to the learning environment are evaluated according to their learning approaches. The subjects participated in the study were 91 university students who enrolled on ‘Instructional Technologies and Material Development’ course. The adapted Turkish version of Biggs, Kember and Leung (2001)’s ‘revised 2F Study Process Questionna...

  16. A Path Analysis of the Effects of Principal Professional Orientation towards Leadership, Professional Teacher Behavior, and School Academic Optimism on School Reading Achievement

    Roxanne M. Mitchell; C. John Tarter

    2016-01-01

    This study tested the effects of the principal’s professional orientation towards leadership/enabling school structure (ESS) on two mediating variables, school academic optimism (SAO) and professional teacher behavior (PTB), on the outcome variable school reading achievement (RA). Data were drawn from a sample of 54 schools (including 45 elementary schools and nine middle schools); the school was the unit of analysis. Data analysis supported a path to RA in which a structural variable, ESS wa...

  17. Evaluation of university students’ academic achievements, web material using behaviors, and attendances in respect to their learning approaches in a blended learning environment

    Yılmaz, M. Betül; ORHAN, FEZA

    2011-01-01

    In this study; in a blended learning environment, university students’ academic achievements, web material using behaviors, and attendances to the learning environment are evaluated according to their learning approaches. The subjects participated in the study were 91 university students who enrolled on ‘Instructional Technologies and Material Development’ course. The adapted Turkish version of Biggs, Kember and Leung (2001)’s ‘revised 2F Study Process Questionnaire’ was used to reveal the st...

  18. Math Achievement in Early Adolescence: The Role of Parental Involvement, Teachers' Behavior, and Students' Motivational Beliefs about Math

    Levpuscek, Melita Puklek; Zupancic, Maja

    2009-01-01

    Contributions of parental involvement in educational pursuits as well as math teachers' classroom behavior to students' motivation and performance in math were investigated. By the end of the first school term, 365 Slovene eighth graders reported on their parents' academic involvement (pressure, support, and help) and their math teachers' behavior…

  19. The regularity series of a Cauchy space

    Darrell C. Kent

    1984-03-01

    Full Text Available This study extends the notion of regularity series from convergence spaces to Cauchy spaces, and includes an investigation of related topics such as that T2 and T3 modifications of a Cauchy space and their behavior relative to certain types of quotient maps. These concepts are applied to obtain a new characterization of Cauchy spaces which have T3 completions.

  20. Sparse structure regularized ranking

    Wang, Jim Jing-Yan

    2014-04-17

    Learning ranking scores is critical for the multimedia database retrieval problem. In this paper, we propose a novel ranking score learning algorithm by exploring the sparse structure and using it to regularize ranking scores. To explore the sparse structure, we assume that each multimedia object could be represented as a sparse linear combination of all other objects, and combination coefficients are regarded as a similarity measure between objects and used to regularize their ranking scores. Moreover, we propose to learn the sparse combination coefficients and the ranking scores simultaneously. A unified objective function is constructed with regard to both the combination coefficients and the ranking scores, and is optimized by an iterative algorithm. Experiments on two multimedia database retrieval data sets demonstrate the significant improvements of the propose algorithm over state-of-the-art ranking score learning algorithms.

  1. Public, Catholic Single-Sex, and Catholic Coeducational High Schools: Their Effects on Achievement, Affect, and Behaviors.

    Marsh, Herbert W.

    1991-01-01

    Using data from the High School and Beyond survey, compares junior and senior year performance and other variables in Catholic single sex, Catholic coed, and public schools. Finds Catholic school students are urged to take more academically demanding courses; this accounts for public/Catholic differences in achievement and university attendance.…

  2. Sleep Duration, Positive Attitude toward Life, and Academic Achievement: The Role of Daytime Tiredness, Behavioral Persistence, and School Start Times

    Perkinson-Gloor, Nadine; Lemola, Sakari; Grob, Alexander

    2013-01-01

    Sleep timing undergoes profound changes during adolescence, often resulting in inadequate sleep duration. The present study examines the relationship of sleep duration with positive attitude toward life and academic achievement in a sample of 2716 adolescents in Switzerland (mean age: 15.4 years, SD = 0.8), and whether this relationship is…

  3. Effects of a Gluten-Free Diet on Rate of Achievement in Autistic Children in an Applied Behavioral Analysis Program.

    Gemmell, Melissa; Chambliss, Catherine

    This study used both between-subjects and within-subjects analyses to examine the effects of a gluten-free diet on the academic achievement of autistic children. The between-subjects analysis included data from eight autistic children (ages 5 to 7) with four on a gluten-free diet and four serving as controls. The number of attempts needed before…

  4. (Semi) regular tetrahedral tilings

    Kolcun, Alexej

    Plzeň: Union Agency, 2013 - (Skala, V.), s. 145-150 ISBN 978-80-86943-75-6. [WSCG 2013 - International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision /21./. Plzeň (CZ), 24.06.2013-27.06.2013] Institutional support: RVO:68145535 Keywords : tetrahedron * regular tessellation * voxel grid * conform decomposition Subject RIV: BA - General Mathematics http://wscg.zcu.cz/WSCG2013/!_2013-WSCG- Communication s-proceedings.pdf

  5. Product Kernel Regularization Networks

    Kudová, Petra; Šámalová, Terezie

    Wien: Springer-Verlag, 2005 - (Ribiero, B.; Albrecht, R.; Dobnikar, A.; Pearson, D.; Steele, N.), s. 433-436 ISBN 3-211-24934-6. [ICANNGA'2005 /7./. Coimbra (PT), 21.03.2005-23.03.2005] R&D Projects: GA ČR GA201/05/0557; GA AV ČR 1ET100300414 Institutional research plan: CEZ:AV0Z10300504 Keywords : learning form examples * regularization networks * product kernel * kernel methods Subject RIV: BA - General Mathematics

  6. Kernel Based Regularization Netowrks

    Kudová, Petra

    Praha: MATFYZPRESS, 2005 - (Hakl, F.), s. 65-74 ISBN 80-86732-56-8. [Doktorandský den '05. Nový Dvůr (CZ), 05.10.2005-07.10.2005] R&D Projects: GA ČR GA201/05/0557 Institutional research plan: CEZ:AV0Z10300504 Keywords : learning from examples * regularization networks * kernel methods * product kernels * sum kernels Subject RIV: BA - General Mathematics

  7. Regularizing portfolio optimization

    Still, Susanne; Kondor, Imre

    2010-07-01

    The optimization of large portfolios displays an inherent instability due to estimation error. This poses a fundamental problem, because solutions that are not stable under sample fluctuations may look optimal for a given sample, but are, in effect, very far from optimal with respect to the average risk. In this paper, we approach the problem from the point of view of statistical learning theory. The occurrence of the instability is intimately related to over-fitting, which can be avoided using known regularization methods. We show how regularized portfolio optimization with the expected shortfall as a risk measure is related to support vector regression. The budget constraint dictates a modification. We present the resulting optimization problem and discuss the solution. The L2 norm of the weight vector is used as a regularizer, which corresponds to a diversification 'pressure'. This means that diversification, besides counteracting downward fluctuations in some assets by upward fluctuations in others, is also crucial because it improves the stability of the solution. The approach we provide here allows for the simultaneous treatment of optimization and diversification in one framework that enables the investor to trade off between the two, depending on the size of the available dataset.

  8. Regularizing portfolio optimization

    The optimization of large portfolios displays an inherent instability due to estimation error. This poses a fundamental problem, because solutions that are not stable under sample fluctuations may look optimal for a given sample, but are, in effect, very far from optimal with respect to the average risk. In this paper, we approach the problem from the point of view of statistical learning theory. The occurrence of the instability is intimately related to over-fitting, which can be avoided using known regularization methods. We show how regularized portfolio optimization with the expected shortfall as a risk measure is related to support vector regression. The budget constraint dictates a modification. We present the resulting optimization problem and discuss the solution. The L2 norm of the weight vector is used as a regularizer, which corresponds to a diversification 'pressure'. This means that diversification, besides counteracting downward fluctuations in some assets by upward fluctuations in others, is also crucial because it improves the stability of the solution. The approach we provide here allows for the simultaneous treatment of optimization and diversification in one framework that enables the investor to trade off between the two, depending on the size of the available dataset.

  9. UNI-VECTOR-SENSOR DIRECTION FINDING WITH REGULARIZED ESPRIT

    2008-01-01

    The regularized Least-Squares Estimation method of Signal Parameters via Rotational Invariance Techniques (LS-ESPRIT) is herein proposed for Direction-Of-Arrival (DOA) estimation of non-Gaussian sources with only one acoustic vector-sensor. The Second-Order Statistics (SOS) and Higher-Order Statistics (HOS) of data are fused within a regularization framework. The steering vectors can be blindly identified by the regularized ESPRIT, from which the aim of DOA estimation can be achieved. Several variants of the regularized ESPRIT are discussed. A suboptimal scheme for determination of the regularization parameters is also given.

  10. Gyrostat Model Regular And Chaotic Behavior*

    Nikolov Svetoslav

    2015-12-01

    Full Text Available During recent years, the interest in the phenomena of chaos in gyroscopic systems has been increasing. It is well-known, that depending on the speed of rotation, a gyroscopic system may lose or gain stability. Despite the overwhelming number of studies reporting the occurrence of various chaotic structures, little is known yet about the construction details and the generality of the underlying bifurcation scenarios that give rise to such chaotic (complex behaviour.

  11. Scaling behavior of regularized bosonic strings

    Ambjorn, Jan

    2015-01-01

    We implement a proper-time UV regularisation of the Nambu-Goto string, introducing an independent metric tensor and the corresponding Lagrange multiplier, and treating them in the mean-field approximation justified for long strings and/or when the dimensions of space-time is large. We compute the regularised determinant of the 2d Laplacian for the closed string winding around a compact dimension, obtaining in this way the effective action, whose minimisation determines the energy of the string ground state in the mean-field approximation. We discuss the existence of two scaling limits when the cutoff is taken to infinity. One scaling limit reproduces the results obtained by the hypercubic regularisation of the Nambu-Goto string as well as by the use of the dynamical triangulation regularisation of the Polyakov string. The other scaling limit reproduces the results obtained by canonical quantisation of the Nambu-Goto string.

  12. Regularity of Minimal Surfaces

    Dierkes, Ulrich; Tromba, Anthony J; Kuster, Albrecht

    2010-01-01

    "Regularity of Minimal Surfaces" begins with a survey of minimal surfaces with free boundaries. Following this, the basic results concerning the boundary behaviour of minimal surfaces and H-surfaces with fixed or free boundaries are studied. In particular, the asymptotic expansions at interior and boundary branch points are derived, leading to general Gauss-Bonnet formulas. Furthermore, gradient estimates and asymptotic expansions for minimal surfaces with only piecewise smooth boundaries are obtained. One of the main features of free boundary value problems for minimal surfaces is t

  13. Mining Regular Patterns in Data Streams Using Vertical Format

    G. Vijay Kumar

    2012-04-01

    Full Text Available The increasing prominence of data streams has been lead to the study of online mining in order to capture interesting trends, patterns and exceptions. Recently, temporal regularity in occurrence behavior of a pattern was treated as an emerging area in several online applications like network traffic, sensor networks, e-business and stock market analysis etc. A pattern is said to be regular in a data stream, if its occurrence behavior is not more than the user given regularity threshold. Although there has been some efforts done in finding regular patterns over stream data, no such method has been developed yet by using vertical data format. Therefore, in this paper we develop a new method called VDSRP-method to generate the complete set of regular patterns over a data stream at a user given regularity threshold. Our experimental results show that highly efficiency in terms of execution and memory consumption.

  14. Regularized versus non-regularized statistical reconstruction techniques

    Denisova, N.V., E-mail: denisova@itam.nsc.ru [Institute of Theoretical and Applied Mechanics, 630090 Novosibirsk (Russian Federation)

    2011-08-21

    An important feature of positron emission tomography (PET) and single photon emission computer tomography (SPECT) is the stochastic property of real clinical data. Statistical algorithms such as ordered subset-expectation maximization (OSEM) and maximum a posteriori (MAP) are a direct consequence of the stochastic nature of the data. The principal difference between these two algorithms is that OSEM is a non-regularized approach, while the MAP is a regularized algorithm. From the theoretical point of view, reconstruction problems belong to the class of ill-posed problems and should be considered using regularization. Regularization introduces an additional unknown regularization parameter into the reconstruction procedure as compared with non-regularized algorithms. However, a comparison of non-regularized OSEM and regularized MAP algorithms with fixed regularization parameters has shown very minor difference between reconstructions. This problem is analyzed in the present paper. To improve the reconstruction quality, a method of local regularization is proposed based on the spatially adaptive regularization parameter. The MAP algorithm with local regularization was tested in reconstruction of the Hoffman brain phantom.

  15. Regularized versus non-regularized statistical reconstruction techniques

    An important feature of positron emission tomography (PET) and single photon emission computer tomography (SPECT) is the stochastic property of real clinical data. Statistical algorithms such as ordered subset-expectation maximization (OSEM) and maximum a posteriori (MAP) are a direct consequence of the stochastic nature of the data. The principal difference between these two algorithms is that OSEM is a non-regularized approach, while the MAP is a regularized algorithm. From the theoretical point of view, reconstruction problems belong to the class of ill-posed problems and should be considered using regularization. Regularization introduces an additional unknown regularization parameter into the reconstruction procedure as compared with non-regularized algorithms. However, a comparison of non-regularized OSEM and regularized MAP algorithms with fixed regularization parameters has shown very minor difference between reconstructions. This problem is analyzed in the present paper. To improve the reconstruction quality, a method of local regularization is proposed based on the spatially adaptive regularization parameter. The MAP algorithm with local regularization was tested in reconstruction of the Hoffman brain phantom.

  16. Modular Regularization Algorithms

    Jacobsen, Michael

    2004-01-01

    The class of linear ill-posed problems is introduced along with a range of standard numerical tools and basic concepts from linear algebra, statistics and optimization. Known algorithms for solving linear inverse ill-posed problems are analyzed to determine how they can be decomposed into indepen......The class of linear ill-posed problems is introduced along with a range of standard numerical tools and basic concepts from linear algebra, statistics and optimization. Known algorithms for solving linear inverse ill-posed problems are analyzed to determine how they can be decomposed...... into independent modules. These modules are then combined to form new regularization algorithms with other properties than those we started out with. Several variations are tested using the Matlab toolbox MOORe Tools created in connection with this thesis. Object oriented programming techniques are explained...... and used to set up the illposed problems in the toolbox. Hereby, we are able to write regularization algorithms that automatically exploit structure in the ill-posed problem without being rewritten explicitly. We explain how to implement a stopping criteria for a parameter choice method based upon...

  17. Associations between Psychosocial Functioning and Academic Achievement: The Peruvian Case

    Manrique Millones, Denisse; Van Leeuwen, Karla; Ghesquière, Pol

    2013-01-01

    The present study investigated (a) how specific aspects of psycho-social functioning (behavioral problems and global self-worth) are associated with academic achievement in spelling, arithmetic and reading; and (b) what is the effect of type of school (private vs. public) on this association. The sample for this study consisted of 901 regular school children attending 6th grade of primary education and living in the urban zones of Metropolitan Lima, Peru. Our research hypotheses were partiall...

  18. Financial strain, parenting behaviors, and adolescents' achievement: testing model equivalence between African American and European American single- and two-parent families.

    Gutman, L M; Eccles, J S

    1999-01-01

    This study tested the equivalence of a theoretical model of parenting behaviors linking financial strain to adolescents' achievement for African American and European American families and for single- and two-parent families. The sample included an economic cross-section of African American (n = 387) and European American families (n = 230) from single- (n = 171) and two-parent (n = 446) homes. Multi-group analyses revealed no significant differences in the structural equation models between the African American and European American families, or between the single- and two-parent families. Results demonstrated that negative parent-adolescent relationships and parental school involvement mediated the relation between financial strain and adolescents' academic achievement. PMID:10621967

  19. Performance-based tests versus behavioral ratings in the assessment of executive functioning in preschoolers: associations with ADHD symptoms and reading achievement.

    Miranda, Ana; Colomer, Carla; Mercader, Jessica; Fernández, M Inmaculada; Presentación, M Jesús

    2015-01-01

    The early assessment of the executive processes using ecologically valid instruments is essential for identifying deficits and planning actions to deal with possible adverse consequences. The present study has two different objectives. The first objective is to analyze the relationship between preschoolers' performance on tests of Working Memory and Inhibition and parents' and teachers' ratings of these executive functions (EFs) using the Behavior Rating Inventory of Executive Function (BRIEF). The second objective consists of studying the predictive value of the different EF measures (performance-based test and rating scales) on Inattention and Hyperactivity/Impulsivity behaviors and on indicators of word reading performance. The participants in the study were 209 children in the last year of preschool, their teachers and their families. Performance-based tests of Working Memory and Inhibition were administered, as well as word reading measures (accuracy and speed). The parents and teachers filled out rating scales of the EF and typical behaviors of attention deficit hyperactivity disorder (ADHD) symptomatology. Moderate correlation values were found between the different EF assessments procedures, although the results varied depending on the different domains. Metacognition Index from the BRIEF presented stronger correlations with verbal working memory tests than with inhibition tests. Both the rating scales and the performance-based tests were significant predictors of Inattention and Hyperactivity/Impulsivity behaviors and the reading achievement measures. However, the BRIEF explained a greater percentage of variance in the case of the ADHD symptomatology, while the performance-based tests explained reading achievement to a greater degree. The implications of the findings for research and clinical practice are discussed. PMID:25972833

  20. Deadlock Prevention Policy with Behavioral Optimality or Suboptimality Achieved by the Redundancy Identification of Constraints and the Rearrangement of Monitors

    Liang Hong

    2015-01-01

    Full Text Available This work develops an iterative deadlock prevention method for a special class of Petri nets that can well model a variety of flexible manufacturing systems. A deadlock detection technique, called mixed integer programming (MIP, is used to find a strict minimal siphon (SMS in a plant model without a complete enumeration of siphons. The policy consists of two phases. At the first phase, SMSs are obtained by MIP technique iteratively and monitors are added to the complementary sets of the SMSs. For the possible existence of new siphons generated after the first phase, we add monitors with their output arcs first pointed to source transitions at the second phase to avoid new siphons generating and then rearrange the output arcs step by step on condition that liveness is preserved. In addition, an algorithm is proposed to remove the redundant constraints of the MIP problem in this paper. The policy improves the behavioral permissiveness of the resulting net and greatly enhances the structural simplicity of the supervisor. Theoretical analysis and experimental results verify the effectiveness of the proposed method.

  1. Annotation of Regular Polysemy

    Martinez Alonso, Hector

    Regular polysemy has received a lot of attention from the theory of lexical semantics and from computational linguistics. However, there is no consensus on how to represent the sense of underspecified examples at the token level, namely when annotating or disambiguating senses of metonymic words...... like “London” (Location/Organization) or “cup” (Container/Content). The goal of this dissertation is to assess whether metonymic sense underspecification justifies incorporating a third sense into our sense inventories, thereby treating the underspecified sense as independent from the literal and...... metonymic. We have conducted an analysis in English, Danish and Spanish. Later on, we have tried to replicate the human judgments by means of unsupervised and semi-supervised sense prediction. The automatic sense-prediction systems have been unable to find empiric evidence for the underspecified sense, even...

  2. Regular spherical dust spacetimes

    Humphreys, N; Matravers, D R; Humphreys, Neil; Maartens, Roy; Matravers, David

    1998-01-01

    Physical (and weak) regularity conditions are used to determine and classify all the possible types of spherically symmetric dust spacetimes in general relativity. This work unifies and completes various earlier results. The junction conditions are described for general non-comoving (and non-null) surfaces, and the limits of kinematical quantities are given on all comoving surfaces where there is Darmois matching. We show that an inhomogeneous generalisation of the Kantowski-Sachs metric may be joined to the Lemaitre-Tolman-Bondi metric. All the possible spacetimes are explicitly divided into four groups according to topology, including a group in which the spatial sections have the topology of a 3-torus. The recollapse conjecture (for these spacetimes) follows naturally in this approach.

  3. Designing molecular structure to achieve ductile fracture behavior in a stiff and strong 2D polymer, "graphylene".

    Sandoz-Rosado, E; Beaudet, T D; Balu, R; Wetzel, E D

    2016-06-01

    As the simplest two-dimensional (2D) polymer, graphene has immensely high intrinsic strength and elastic stiffness but has limited toughness due to brittle fracture. We use atomistic simulations to explore a new class of graphene/polyethylene hybrid 2D polymer, "graphylene", that exhibits ductile fracture mechanisms and has a higher fracture toughness and flaw tolerance than graphene. A specific configuration of this 2D polymer hybrid, denoted "GrE-2" for the two-carbon-long ethylene chains connecting benzene rings in the inherent framework, is prioritized for study. MD simulations of crack propagation show that the energy release rate to propagate a crack in GrE-2 is twice that of graphene. We also demonstrate that GrE-2 exhibits delocalized failure and other energy-dissipating fracture mechanisms such as crack branching and bridging. These results demonstrate that 2D polymers can be uniquely tailored to achieve a balance of fracture toughness with mechanical stiffness and strength. PMID:26996950

  4. Regular Totally Separable Sphere Packings

    Reid, Samuel

    2015-01-01

    The topic of totally separable sphere packings is surveyed with a focus on regular constructions, uniform tilings, and contact number problems. An enumeration of all regular totally separable sphere packings in $\\mathbb{R}^2$, $\\mathbb{R}^3$, and $\\mathbb{R}^4$ which are based on convex uniform tessellations, honeycombs, and tetracombs, respectively, is presented, as well as a construction of a family of regular totally separable sphere packings in $\\mathbb{R}^d$ that is not based on a convex...

  5. On Ideals of Regular Rings

    CHEN Huan Yin; LI Fu An

    2002-01-01

    In this paper, we investigate ideals of regular rings and give several characterizations for an ideal to satisfy the comparability. In addition, it is shown that, if Ⅰ is a minimal two-sided ideal of a regular ring R, then Ⅰ satisfies the comparability if and only if Ⅰ is separative. Furthermore, we prove that, for ideals with stable range one, Roth's problem has an affirmative solution. These extend the corresponding results on unit-regularity and one-sided unit-regularity.

  6. Research on Government Behavior to Accelerate Science and Technology Achievement Transfer%促进科技成果转化的政府行为研究

    王雪原; 王宏起; 李长云

    2015-01-01

    针对我国科技成果转化率低以及政府行为缺乏有效理论指导的现实问题,在阐明科技成果、科技成果转化与科技成果产业化本质问题的基础上,针对3个环节提出政府部门介入科技成果转化的方式:科技成果选择、科技成果论证、科技成果立项;技术工程化、对接企业配套条件优化、对接渠道拓展;信息普及与宣传、优惠政策激励、产业化过程指导等。针对不同介入方式,提出差异化评审、转化率统计与考核、可转化度论证、已有成果后续筛选、公共基金支持、对接单位匹配条件优化立项、对接主体培育、科技管理工作系统整合、服务打包与系统解决方法供给等多种管理方法。可为深入理解科技成果转化,规范与完善政府科技管理行为,促进科技成果落地转化提供有效的理论指导与决策支持。%According to the fact that science and technology achievement transfer rate is low in China and government behavior is lack of effec‐tive academic support ,the ways that government department participating into science and technology achievement transfer are brought forward in this paper based on the detailed explanation of the essence problems of science and technology achievement and its transfer and industrializa‐tion ,which includes science and technology achievement selection ,argumentation and confirmation ;technology engineering and inter‐mediated enterprise matching condition optimization and exchanging approaches enlarging ;and information generalization and publicity ,preferential poli‐cy stimulating and guidance during the process of industrialization ,etc .Meanwhile several managing methods are offered pointing to different participating ways ,such as differentiated evaluation and review ,statistics and evaluation of transfer rate ,argumentation of available degree for transfer ,selection among exited achievement ,public fund supporting

  7. Regularized Generalized Canonical Correlation Analysis

    Tenenhaus, Arthur; Tenenhaus, Michel

    2011-01-01

    Regularized generalized canonical correlation analysis (RGCCA) is a generalization of regularized canonical correlation analysis to three or more sets of variables. It constitutes a general framework for many multi-block data analysis methods. It combines the power of multi-block data analysis methods (maximization of well identified criteria) and…

  8. Conservative regularization of compressible flow

    Krishnaswami, Govind S; Thyagaraja, Anantanarayanan

    2015-01-01

    Ideal Eulerian flow may develop singularities in vorticity w. Navier-Stokes viscosity provides a dissipative regularization. We find a local, conservative regularization - lambda^2 w times curl(w) of compressible flow and compressible MHD: a three dimensional analogue of the KdV regularization of the one dimensional kinematic wave equation. The regulator lambda is a field subject to the constitutive relation lambda^2 rho = constant. Lambda is like a position-dependent mean-free path. Our regularization preserves Galilean, parity and time-reversal symmetries. We identify locally conserved energy, helicity, linear and angular momenta and boundary conditions ensuring their global conservation. Enstrophy is shown to remain bounded. A swirl velocity field is identified, which transports w/rho and B/rho generalizing the Kelvin-Helmholtz and Alfven theorems. A Hamiltonian and Poisson bracket formulation is given. The regularized equations are used to model a rotating vortex, channel flow, plane flow, a plane vortex ...

  9. Natural selection and mechanistic regularity.

    DesAutels, Lane

    2016-06-01

    In this article, I address the question of whether natural selection operates regularly enough to qualify as a mechanism of the sort characterized by Machamer, Darden, and Craver (2000). Contrary to an influential critique by Skipper and Millstein (2005), I argue that natural selection can be seen to be regular enough to qualify as an MDC mechanism just fine-as long as we pay careful attention to some important distinctions regarding mechanistic regularity and abstraction. Specifically, I suggest that when we distinguish between process vs. product regularity, mechanism-internal vs. mechanism-external sources of irregularity, and abstract vs. concrete regularity, we can see that natural selection is only irregular in senses that are unthreatening to its status as an MDC mechanism. PMID:26921876

  10. Extreme values, regular variation and point processes

    Resnick, Sidney I

    1987-01-01

    Extremes Values, Regular Variation and Point Processes is a readable and efficient account of the fundamental mathematical and stochastic process techniques needed to study the behavior of extreme values of phenomena based on independent and identically distributed random variables and vectors It presents a coherent treatment of the distributional and sample path fundamental properties of extremes and records It emphasizes the core primacy of three topics necessary for understanding extremes the analytical theory of regularly varying functions; the probabilistic theory of point processes and random measures; and the link to asymptotic distribution approximations provided by the theory of weak convergence of probability measures in metric spaces The book is self-contained and requires an introductory measure-theoretic course in probability as a prerequisite Almost all sections have an extensive list of exercises which extend developments in the text, offer alternate approaches, test mastery and provide for enj...

  11. Regular languages and partial commutations

    Cano Gómez, Antonio; Guaiana, Giovanna; Pin, Jean-Eric

    2013-01-01

    [ES] El cierre de un lenguaje regular bajo una conmutación [parcial] $I$ se ha estudiado extensivamente. Presentamos nuevos avances sobre los dos problemas de esta zona: (1) cuando es el cierre de un lenguaje regular bajo ¿conmutación [parcial] todavía regular? (2) Hay alguna clase robusta ¿de idiomas cerraron bajo conmutación [parcial]? Demostramos que la clase $\\PolG$ de polinomios de grupo idiomas está cerrada bajo conmutación y bajo conmutación parcial cuando el co...

  12. A Criterion for Regular Sequences

    D P Patil; U Storch; J Stückrad

    2004-05-01

    Let be a commutative noetherian ring and $f_1,\\ldots,f_r \\in R$. In this article we give (cf. the Theorem in $\\mathcal{x}$2) a criterion for $f_1,\\ldots,f_r$ to be regular sequence for a finitely generated module over which strengthens and generalises a result in [2]. As an immediate consequence we deduce that if $V(g_1,\\ldots,g_r) \\subseteq V(f_1,\\ldots,f_r)$ in Spec and if $f_1,\\ldots,f_r$ is a regular sequence in , then $g_1,\\ldots,g_r$ is also a regular sequence in .

  13. Mining Regular Patterns in Data Streams Using Vertical Format

    G. Vijay Kumar

    2012-04-01

    Full Text Available The increasing prominence of data streams has been lead to the study of online mining in orderto capture interesting trends, patterns and exceptions. Recently, temporal regularity in occurrencebehavior of a pattern was treated as an emerging area in several online applications like networktraffic, sensor networks, e-business and stock market analysis etc. A pattern is said to be regularin a data stream, if its occurrence behavior is not more than the user given regularity threshold.Although there has been some efforts done in finding regular patterns over stream data, no suchmethod has been developed yet by using vertical data format. Therefore, in this paper wedevelop a new method called VDSRP-method to generate the complete set of regular patternsover a data stream at a user given regularity threshold. Our experimental results show that highlyefficiency in terms of execution and memory consumption.

  14. Einstein spacetimes with weak regularity

    LeFloch, Philippe G.

    2010-01-01

    We review recent work on the Einstein equations of general relativity when the curvature is defined in a weak sense. Weakly regular spacetimes are constructed, in which impulsive gravitational waves, as well as shock waves, propagate.

  15. New regular black hole solutions

    In the present work we consider general relativity coupled to Maxwell's electromagnetism and charged matter. Under the assumption of spherical symmetry, there is a particular class of solutions that correspond to regular charged black holes whose interior region is de Sitter, the exterior region is Reissner-Nordstroem and there is a charged thin-layer in-between the two. The main physical and geometrical properties of such charged regular black holes are analyzed.

  16. NONCONVEX REGULARIZATION FOR SHAPE PRESERVATION

    CHARTRAND, RICK [Los Alamos National Laboratory

    2007-01-16

    The authors show that using a nonconvex penalty term to regularize image reconstruction can substantially improve the preservation of object shapes. The commonly-used total-variation regularization, {integral}|{del}u|, penalizes the length of the object edges. They show that {integral}|{del}u|{sup p}, 0 < p < 1, only penalizes edges of dimension at least 2-p, and thus finite-length edges not at all. We give numerical examples showing the resulting improvement in shape preservation.

  17. Geometric continuum regularization of quantum field theory

    An overview of the continuum regularization program is given. The program is traced from its roots in stochastic quantization, with emphasis on the examples of regularized gauge theory, the regularized general nonlinear sigma model and regularized quantum gravity. In its coordinate-invariant form, the regularization is seen as entirely geometric: only the supermetric on field deformations is regularized, and the prescription provides universal nonperturbative invariant continuum regularization across all quantum field theory. 54 refs

  18. On the Relationship among Academic Seeking Help Behavior and Achievement Goal Orientation%初中生成就目标定向与学业求助的关系研究

    宋海芳

    2013-01-01

      To explore the relationship among academic seeking help behavior and achievement goal orientation, the paper applies Academic Seeking Help Behavior Scale and Achievement Goal Orientation Scale to survey 210 junior high school students. Results are: Gender and grade have no significant influence on junior high school students; Achievement goal orientation is correlated with academic seeking help behavior;Achievement goal orientation has a role of remarkable prediction in academic seeking help behavior. The results show that achievement goal orientation has an influence on academic seeking help behavior.%  文章以初中生的成就目标定向与学业求助的关系为研究对象,运用《学业求助问卷》和《成就目标定向量表》,对210名初中生进行问卷调查。结论为:初中生学业求助行为在性别、年级上无显著差异;初中生成就目标定向和学业求助行为存在显著性相关;初中生成就目标定向对学业求助行为有显著的预测作用。这说明初中生的学业求助行为受成就目标定向的影响。

  19. A Path Analysis of the Effects of Principal Professional Orientation towards Leadership, Professional Teacher Behavior, and School Academic Optimism on School Reading Achievement

    Roxanne M. Mitchell

    2016-02-01

    Full Text Available This study tested the effects of the principal’s professional orientation towards leadership/enabling school structure (ESS on two mediating variables, school academic optimism (SAO and professional teacher behavior (PTB, on the outcome variable school reading achievement (RA. Data were drawn from a sample of 54 schools (including 45 elementary schools and nine middle schools; the school was the unit of analysis. Data analysis supported a path to RA in which a structural variable, ESS was the immediate antecedent of SAO and PTB. Two control variables, school level and SES, were included in the model. SES had a significant effect on SAO but not on PTB. School level had a negative effect on both PTB and SAO suggesting that both variables were higher in elementary school and declined in middle school. SES paired with SAO in predicting RA. As expected, SAO had a greater effect on RA than SES. The significance of the findings lies in the confirmation of SAO as an important influence on RA and in demonstrating the importance of ESS in establishing a context in which AO and PTB can flourish.

  20. An Exploratory Study of College Health-Risk Behaviors: Implications for Campus Programs and Services.

    Fetro, Joyce V.; Wood, Ralph; Drolet, Judy C.

    2000-01-01

    Assessed six categories of college students' health risk behaviors. Student survey data indicated that respondents were engaging in risk behaviors that could impact educational achievement and lead to serious consequences. Youth tended to enter college with established patterns of risk. Most regularly consumed large amounts of alcohol. Differences…

  1. Local orientational mobility in regular hyperbranched polymers

    Dolgushev, Maxim; Fürstenberg, Florian; Guérin, Thomas

    2016-01-01

    We study the dynamics of local bond orientation in regular hyperbranched polymers modeled by Vicsek fractals. The local dynamics is investigated through the temporal autocorrelation functions of single bonds and the corresponding relaxation forms of the complex dielectric susceptibility. We show that the dynamic behavior of single segments depends on their remoteness from the periphery rather than on the size of the whole macromolecule. Remarkably, the dynamics of the core segments (which are most remote from the periphery) shows a scaling behavior that differs from the dynamics obtained after structural average. We analyze the most relevant processes of single segment motion and provide an analytic approximation for the corresponding relaxation times. Furthermore, we describe an iterative method to calculate the orientational dynamics in the case of very large macromolecular sizes.

  2. Regular

    Ratanpal B S; Sharma Jaita

    2016-03-01

    The charged anisotropic star on paraboloidal space-time is reported by choosing a particular form of radial pressure and electric field intensity. The non-singular solution of Einstein–Maxwell system of equation has been derived and it is shown that the model satisfies all the physical plausibility conditions. It is observed that in the absence of electric field intensity, the model reducesto a particular case of uncharged Sharma and Ratanpal model. It is also observed that the parameter used in the electric field intensity directly affects mass of the star.

  3. Regular algebra and finite machines

    Conway, John Horton

    2012-01-01

    World-famous mathematician John H. Conway based this classic text on a 1966 course he taught at Cambridge University. Geared toward graduate students of mathematics, it will also prove a valuable guide to researchers and professional mathematicians.His topics cover Moore's theory of experiments, Kleene's theory of regular events and expressions, Kleene algebras, the differential calculus of events, factors and the factor matrix, and the theory of operators. Additional subjects include event classes and operator classes, some regulator algebras, context-free languages, communicative regular alg

  4. $p$-regular nonlinear dynamics

    Medak, Beata; Tret'yakov, Alexey A.

    2015-01-01

    In this paper we generalize the notion of $p$-factor operator which is the basic notion of the so-called $p$-regularity theory for nonlinear and degenerated operators. We prove a theorem related to a new construction of $p$-factor operator. The obtained results are illustrated by an example concerning nonlinear dynamical system.

  5. Examples of q-regularization

    Rodr, S

    1995-01-01

    An Introduction to Hopf algebras as a tool for the regularization of relavent quantities in quantum field theory is given. We deform algebraic spaces by introducing q as a regulator of a non-commutative and non-cocommutative Hopf algebra. Relevant quantities are finite provided q\

  6. Globals of Completely Regular Monoids

    Wu Qian-qian; Gan Ai-ping; Du Xian-kun

    2015-01-01

    An element of a semigroup S is called irreducible if it cannot be expressed as a product of two elements in S both distinct from itself. In this paper we show that the class C of all completely regular monoids with irreducible identity elements satisfies the strong isomorphism property and so it is globally determined.

  7. Regularized Chapman-Enskog expansion for scalar conservation laws

    Schochet, Steven; Tadmor, Eitan

    1990-01-01

    Rosenau has recently proposed a regularized version of the Chapman-Enskog expansion of hydrodynamics. This regularized expansion resembles the usual Navier-Stokes viscosity terms at law wave-numbers, but unlike the latter, it has the advantage of being a bounded macroscopic approximation to the linearized collision operator. The behavior of Rosenau regularization of the Chapman-Enskog expansion (RCE) is studied in the context of scalar conservation laws. It is shown that thie RCE model retains the essential properties of the usual viscosity approximation, e.g., existence of traveling waves, monotonicity, upper-Lipschitz continuity..., and at the same time, it sharpens the standard viscous shock layers. It is proved that the regularized RCE approximation converges to the underlying inviscid entropy solution as its mean-free-path epsilon approaches 0, and the convergence rate is estimated.

  8. Teacher Attitudes on Personal Teaching Efficacy and Responsive Teaching, and Principal Leadership Behaviors in the Areas of Leader Social Relationships, Leadership/Goal Setting, and Collaboration for Learning in Low Wealth, Low and High Achieving Middle Schools

    Levey, Eliana K.

    2014-01-01

    The purpose of this study was to investigate whether middle school teacher attitudes on personal teaching efficacy and responsive teaching and their descriptions of their principal's leadership behaviors in the areas of leader social relationships, leadership/goal setting, and collaboration for learning differ for high- and low-achieving Grade 8…

  9. The Effect of the Leader in Me, a School-Wide Positive Behavior Intervention System (SW-PBIS), Based on Student Achievement and Office Discipline Referrals for Fifth Grade Students in a Rural Elementary School in North Central Washington State

    Miller, Christopher A.

    2016-01-01

    The purpose this study was to examine the implementation of The Leader in Me, a school-wide positive behavior intervention system (SW-PBIS), and analyze its impact on 5th grade students based on student achievement and office discipline referrals in a rural elementary school in North Central Washington state. The school was in the first year of…

  10. Examining the Specific Effects of Context on Adaptive Behavior and Achievement in a Rural African Community: Six Case Studies from Rural Areas of Southern Province, Zambia

    Tan, Mei; Reich, Jodi; Hart, Lesley; Thuma, Philip E.; Grigorenko, Elena L.

    2014-01-01

    Generally accepted as universal, the construct of adaptive behavior differs in its manifestations across different cultures and settings. The Vineland-II (Sparrow et al. in "Vineland Adaptive Behavior Scales, Second edn." AGS Publishing, Circle Pines, MN, 2005) was translated into Chitonga and adapted to the setting of rural Southern…

  11. Convergence and fluctuations of Regularized Tyler estimators

    Kammoun, Abla

    2015-10-26

    This article studies the behavior of regularized Tyler estimators (RTEs) of scatter matrices. The key advantages of these estimators are twofold. First, they guarantee by construction a good conditioning of the estimate and second, being a derivative of robust Tyler estimators, they inherit their robustness properties, notably their resilience to the presence of outliers. Nevertheless, one major problem that poses the use of RTEs in practice is represented by the question of setting the regularization parameter p. While a high value of p is likely to push all the eigenvalues away from zero, it comes at the cost of a larger bias with respect to the population covariance matrix. A deep understanding of the statistics of RTEs is essential to come up with appropriate choices for the regularization parameter. This is not an easy task and might be out of reach, unless one considers asymptotic regimes wherein the number of observations n and/or their size N increase together. First asymptotic results have recently been obtained under the assumption that N and n are large and commensurable. Interestingly, no results concerning the regime of n going to infinity with N fixed exist, even though the investigation of this assumption has usually predated the analysis of the most difficult N and n large case. This motivates our work. In particular, we prove in the present paper that the RTEs converge to a deterministic matrix when n → ∞ with N fixed, which is expressed as a function of the theoretical covariance matrix. We also derive the fluctuations of the RTEs around this deterministic matrix and establish that these fluctuations converge in distribution to a multivariate Gaussian distribution with zero mean and a covariance depending on the population covariance and the parameter.

  12. Effects of Student Perceptions of Teachers' Motivational Behavior on Reading, English, and Mathematics Achievement: The Mediating Role of Domain Specific Self-Efficacy and Intrinsic Motivation

    You, Sukkyung; Dang, Myley; Lim, Sun Ah

    2016-01-01

    Background: In the Korean educational system, academic achievement is one of the crucial factors in assessing a student's academic ability for postsecondary education. Thus, many researchers have been studying ways to improve students' academic achievement. Objective: The purpose of this study was to examine the relationship between students'…

  13. The General Quantization Problem for Distributions with Regular Support

    Pötzelberger, Klaus

    1999-01-01

    We study the asymptotic behavior of the quantization error for general information functions and prove results for distributions P with regular support. We characterize the information functions for which the uniform distribution on the set of prototypes converges weakly to P. (author's abstract)

  14. Near-Regular Texture Synthesis

    Haindl, Michal; Hatka, Martin

    Heidelberg : Springer, 2009 - (X. Jiang, N.Petkov), s. 1138-1145 ISBN 978-3-642-03766-5. ISSN 0302-9743. - (Lecture Notes in Computer Science. 5702). [13th International Conference on Computer Analysis of Images and Patterns. Muenster (DE), 02.09.2009-04.09.2009] R&D Projects: GA MŠk 1M0572; GA ČR GA102/08/0593 Grant ostatní: GA MŠk(CZ) 2C06019 Institutional research plan: CEZ:AV0Z10750506 Keywords : texture modelling * near-regular texture Subject RIV: BD - Theory of Information http://library.utia.cas.cz/separaty/2009/RO/haindl-near-regular texture synthesis.pdf

  15. Efficient Hyperelastic Regularization for Registration

    Darkner, Sune; Hansen, Michael Sass; Larsen, Rasmus; Hansen, Mads Fogtmann

    For most image registration problems a smooth one-to-one mapping is desirable, a diffeomorphism. This can be obtained using priors such as volume preservation, certain kinds of elasticity or both. The key principle is to regularize the strain of the deformation which can be done through penalizat......For most image registration problems a smooth one-to-one mapping is desirable, a diffeomorphism. This can be obtained using priors such as volume preservation, certain kinds of elasticity or both. The key principle is to regularize the strain of the deformation which can be done through...... elastic priors such at the Saint Vernant Kirchoff model, the Ogden material model or Riemanian elasticity. We exemplify the approach through synthetic registration and special tests as well as registration of different modalities; 2D cardiac MRI and 3D surfaces of the human ear. The artificial examples...

  16. Fast regularized image interpolation method

    Hongchen Liu; Yong Feng; Linjing Li

    2007-01-01

    The regularized image interpolation method is widely used based on the vector interpolation model in which down-sampling matrix has very large dimension and needs large storage consumption and higher computation complexity. In this paper, a fast algorithm for image interpolation based on the tensor product of matrices is presented, which transforms the vector interpolation model to matrix form. The proposed algorithm can extremely reduce the storage requirement and time consumption. The simulation results verify their validity.

  17. Regularized strings with extrinsic curvature

    We analyze models of discretized string theories, where the path integral over world sheet variables is regularized by summing over triangulated surfaces. The inclusion of curvature in the action is a necessity for the scaling of the string tension. We discuss the physical properties of models with extrinsic curvature terms in the action and show that the string tension vanishes at the critical point where the bare extrinsic curvature coupling tends to infinity. Similar results are derived for models with intrinsic curvature. (orig.)

  18. Complete nonmeasurability in regular families

    Ralowski, Robert

    2010-01-01

    We show that for a $\\sigma $-ideal $\\ci$ with a Borel base of subsets of an uncountable Polish space, if $\\ca$ is (in several senses) a "regular" family of subsets from $\\ci $ then there is a subfamily of $\\ca$ whose union is completely nonmeasurable i.e. its intersection with every Borel set not in $\\ci $ does not belong to the smallest $\\sigma $-algebra containing all Borel sets and $\\ci.$ Our results generalize results from \\cite{fourpoles} and \\cite{fivepoles}.

  19. Regularizing RNNs by Stabilizing Activations

    Krueger, David; Memisevic, Roland

    2015-01-01

    We stabilize the activations of Recurrent Neural Networks (RNNs) by penalizing the squared distance between successive hidden states' norms. This penalty term is an effective regularizer for RNNs including LSTMs and IRNNs, improving performance on character-level language modelling and phoneme recognition, and outperforming weight noise and dropout. We set state of the art (17.5% PER) for an RNN on the TIMIT phoneme recognition task, without using beam-search. With this penalty term, IRNN can...

  20. Regular Symmetry Patterns (Technical Report)

    Lin, Anthony W.; Nguyen, Truong Khanh; Rümmer, Philipp; Sun, Jun

    2015-01-01

    Symmetry reduction is a well-known approach for alleviating the state explosion problem in model checking. Automatically identifying symmetries in concurrent systems, however, is computationally expensive. We propose a symbolic framework for capturing symmetry patterns in parameterised systems (i.e. an infinite family of finite-state systems): two regular word transducers to represent, respectively, parameterised systems and symmetry patterns. The framework subsumes various types of symmetry ...

  1. Regular Variation and Smile Asymptotics

    Benaim, Shalom; Friz, Peter

    2006-01-01

    We consider risk-neutral returns and show how their tail asymptotics translate directly to asymptotics of the implied volatility smile, thereby sharpening Roger Lee's celebrated moment formula. The theory of regular variation provides the ideal mathematical framework to formulate and prove such results. The practical value of our formulae comes from the vast literature on tail asymptotics and our conditions are often seen to be true by simple inspection of known results.

  2. Addictive Behaviors Amongst University Students: Contributing Factors, Student's Perception and Addiction Rates

    Ahmad Houri; Mirvat Hammoud

    2005-01-01

    Factors contributing to addictive behaviors affecting student health are analyzed in this study. Smoking, alcohol consumption, and the use of illegal drugs are assessed in a sample of 290 university students. General averages indicate that 37.2% of students smoke cigarettes, 49.8% drink alcohol regularly, and 17.9% have tried illegal drugs while 4.8% of them use it regularly. Age, academic achievement, gender, religion, family status and financial status were correlated to these addictive beh...

  3. The Impact of Positive Behavior Intervention Training for Teachers On Referral Rates for Misbehavior, Special Education Evaluation and Student Reading Achievement in the Elementary Grades

    Susan Polirstok, Ed.D.; Jay Gottlieb, Ph.D.

    2006-01-01

    A professional development program which trained whole school staffs in the use of positive behavioral interventions for the purpose of reducing referral rates of students for misbehavior and special education evaluation. The program focused on training teachers and paraprofessionals in behavior management strategies to increase “high approval teaching,” to develop structured and organized classroomenvironments, to engage in contingent teaching, and to improve the overall school climate. The ...

  4. Cherokee Culture and School Achievement.

    Brown, Anthony D.

    1980-01-01

    Compares the effect of cooperative and competitive behaviors of Cherokee and Anglo American elementary school students on academic achievement. Suggests changes in teaching techniques and lesson organization that might raise academic achievement while taking into consideration tribal traditions that limit scholastic achievement in an…

  5. Regularization ambiguities in loop quantum gravity

    One of the main achievements of loop quantum gravity is the consistent quantization of the analog of the Wheeler-DeWitt equation which is free of ultraviolet divergences. However, ambiguities associated to the intermediate regularization procedure lead to an apparently infinite set of possible theories. The absence of an UV problem--the existence of well-behaved regularization of the constraints--is intimately linked with the ambiguities arising in the quantum theory. Among these ambiguities is the one associated to the SU(2) unitary representation used in the diffeomorphism covariant 'point-splitting' regularization of the nonlinear functionals of the connection. This ambiguity is labeled by a half-integer m and, here, it is referred to as the m ambiguity. The aim of this paper is to investigate the important implications of this ambiguity. We first study 2+1 gravity (and more generally BF theory) quantized in the canonical formulation of loop quantum gravity. Only when the regularization of the quantum constraints is performed in terms of the fundamental representation of the gauge group does one obtain the usual topological quantum field theory as a result. In all other cases unphysical local degrees of freedom arise at the level of the regulated theory that conspire against the existence of the continuum limit. This shows that there is a clear-cut choice in the quantization of the constraints in 2+1 loop quantum gravity. We then analyze the effects of the ambiguity in 3+1 gravity exhibiting the existence of spurious solutions for higher representation quantizations of the Hamiltonian constraint. Although the analysis is not complete in 3+1 dimensions - due to the difficulties associated to the definition of the physical inner product - it provides evidence supporting the definitions quantum dynamics of loop quantum gravity in terms of the fundamental representation of the gauge group as the only consistent possibilities. If the gauge group is SO(3) we find

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

    Danilo Garcia

    2015-04-01

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

  7. Efficient Hyperelastic Regularization for Registration

    Darkner, Sune; Hansen, Michael S; Larsen, Rasmus;

    2011-01-01

    penalization of the eigen values of the stress tensor. We present a computational framework for regularization of image registration for isotropic hyper elasticity. We formulate an efficient and parallel scheme for computing the principal stain based for a given parameterization by decomposing the left Cauchy...... elastic priors such at the Saint Vernant Kirchoff model, the Ogden material model or Riemanian elasticity. We exemplify the approach through synthetic registration and special tests as well as registration of different modalities; 2D cardiac MRI and 3D surfaces of the human ear. The artificial examples...

  8. Regularized Statistical Analysis of Anatomy

    Sjöstrand, Karl

    2007-01-01

    This thesis presents the application and development of regularized methods for the statistical analysis of anatomical structures. Focus is on structure-function relationships in the human brain, such as the connection between early onset of Alzheimer’s disease and shape changes of the corpus...... callosum. One of the comprehensive goals of this type of research is to use non-invasive imaging devices for the detection of diseases which are otherwise difficult to diagnose at an early stage. A more modest but equally interesting goal is to improve the understanding of the brain in relation to body and...

  9. Regular nanofabrics in emerging technologies

    Jamaa, M Haykel Ben

    2011-01-01

    ""Regular Nanofabrics in Emerging Technologies"" gives a deep insight into both fabrication and design aspects of emerging semiconductor technologies, that represent potential candidates for the post-CMOS era. Its approach is unique, across different fields, and it offers a synergetic view for a public of different communities ranging from technologists, to circuit designers, and computer scientists. The book presents two technologies as potential candidates for future semiconductor devices and systems and it shows how fabrication issues can be addressed at the design level and vice versa. The

  10. Regularization methods in Banach spaces

    Schuster, Thomas; Hofmann, Bernd; Kazimierski, Kamil S

    2012-01-01

    Regularization methods aimed at finding stable approximate solutions are a necessary tool to tackle inverse and ill-posed problems. Usually the mathematical model of an inverse problem consists of an operator equation of the first kind and often the associated forward operator acts between Hilbert spaces. However, for numerous problems the reasons for using a Hilbert space setting seem to be based rather on conventions than on an approprimate and realistic model choice, so often a Banach space setting would be closer to reality. Furthermore, sparsity constraints using general Lp-norms or the B