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Sample records for hfrc expectation values

  1. Expectation Value in Bell's Theorem

    OpenAIRE

    Wang, Zheng-Chuan

    2006-01-01

    We will demonstrate in this paper that Bell's theorem (Bell's inequality) does not really conflict with quantum mechanics, the controversy between them originates from the different definitions for the expectation value using the probability distribution in Bell's inequality and the expectation value in quantum mechanics. We can not use quantum mechanical expectation value measured in experiments to show the violation of Bell's inequality and then further deny the local hidden-variables theor...

  2. Instability of q-expectation value

    OpenAIRE

    Abe, Sumiyoshi

    2008-01-01

    q-Expectation value of a physical quantity is widely used in nonextensive statistical mechanics. Here, it is shown that the q-expectation value is not stable under small deformations of a probability distribution function, in general, whereas the ordinary expectation value is always stable.

  3. Expectancy-Value Theory of Achievement Motivation.

    Science.gov (United States)

    Wigfield; Eccles

    2000-01-01

    We discuss the expectancy-value theory of motivation, focusing on an expectancy-value model developed and researched by Eccles, Wigfield, and their colleagues. Definitions of crucial constructs in the model, including ability beliefs, expectancies for success, and the components of subjective task values, are provided. These definitions are compared to those of related constructs, including self-efficacy, intrinsic and extrinsic motivation, and interest. Research is reviewed dealing with two issues: (1) change in children's and adolescents' ability beliefs, expectancies for success, and subjective values, and (2) relations of children's and adolescents' ability-expectancy beliefs and subjective task values to their performance and choice of activities. Copyright 2000 Academic Press.

  4. Choosing an expected sun protection factor value.

    Science.gov (United States)

    Sica, John R; Caswell, Michael

    2015-01-01

    Sun protection factor, SPF, is a measure of the efficacy of a topical sunscreen product; the higher the SPF, the greater the blockage of ultraviolet-induced erythema. While there are several methods to determine SPF, the Food and Drug Administration (FDA) methods are unique. The FDA methods define the label SPF value as the largest whole integer after subtracting an "A" value from the mean SPF. The A value, composed of the product of the upper 5% point of the t-distribution and the standard deviation (SD), divided by √(n), where n equals the number of subjects, has a significant impact on the label SPF value. Two examples explore this impact. Development of strategies to mitigate the impact of A using expected SPF values are explored using historical clinical trial data. A more enlightened choice of expected SPF values is shown to lead to higher label SPF values.

  5. Attitude towards Mathematics: Emotions, Expectations and Values.

    Science.gov (United States)

    Hannula, Markku S.

    2002-01-01

    Suggests a new framework for analyzing attitude and changes in attitude. Identifies four different evaluative processes as aspects of attitude: (1) emotions aroused in the situation; (2) emotions associated with the stimuli; (3) expected consequences; and (4) relating the situation to personal values. Illustrates the usefulness of this analytical…

  6. Duality, mass spectrum and vacuum expectation values

    Science.gov (United States)

    Köberle, R.; Marino, E. C.

    1983-07-01

    We give a general proof that for an arbitrary two-dimensional theory containing order and disorder fields φ(x) and μ(x), defined so as to satisfy a dual algebra, then, the mass gap is zero, whenever =0 and =0. It is also shown that the dual algebra imposes certain restrictions on the mixed vacuum expectation values of the fields. In particular, the product and the two-point functions vanish. On leave of absence from and address after July 1, 1983, Departamento de Fisica, Universidade Federal de Sa~o Carlos, Cx.P. 676, 13560, Sa~o Carlos - SP Brazil.

  7. Predicting Problem Behaviors with Multiple Expectancies: Expanding Expectancy-Value Theory

    Science.gov (United States)

    Borders, Ashley; Earleywine, Mitchell; Huey, Stanley J.

    2004-01-01

    Expectancy-value theory emphasizes the importance of outcome expectancies for behavioral decisions, but most tests of the theory focus on a single behavior and a single expectancy. However, the matching law suggests that individuals consider expected outcomes for both the target behavior and alternative behaviors when making decisions. In this…

  8. Expected Value Method for Fuzzy Multiple Attribute Decision Making

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    This paper presents a fuzzy multiple attribute decision-making (FMADM) method in which the attribute weights and decision matrix elements (attribute values) are fuzzy variables. Fuzzy arithmetic and the expected value operator of fuzzy variables are used to develop the expected value method to solve the FMADM problem. A numerical example is given to demonstrate the feasibility and effectiveness of the method.

  9. Expectancy-Value and Children's Science Achievement: Parents Matter

    Science.gov (United States)

    Thomas, Julie A.; Strunk, Kamden K.

    2017-01-01

    This longitudinal study explored the ways parents' and teachers' expectancy for success influences 3rd-5th children's expectancy for success and achievement in science. Guided by an open-systems perspective and functional (Ballantine & Roberts, 2007) and expectancy-value (Eccles, 2005, 2007) theories, we focused on school related socialization…

  10. Stochastic Samples versus Vacuum Expectation Values in Cosmology

    CERN Document Server

    Tsamis, N C; Woodard, R P

    2010-01-01

    Particle theorists typically use expectation values to study the quantum back-reaction on inflation, whereas many cosmologists stress the stochastic nature of the process. While expectation values certainly give misleading results for some things, such as the stress tensor, we argue that operators exist for which there is no essential problem. We quantify this by examining the stochastic properties of a noninteracting, massless, minimally coupled scalar on a locally de Sitter background. The square of the stochastic realization of this field seems to provide an example of great relevance for which expectation values are not misleading. We also examine the frequently expressed concern that significant back-reaction from expectation values necessarily implies large stochastic fluctuations between nearby spatial points. Rather than viewing the stochastic formalism in opposition to expectation values, we argue that it provides a marvelously simple way of capturing the leading infrared logarithm corrections to the...

  11. Pricing for Catastrophe Bonds Based on Expected-value Model

    Directory of Open Access Journals (Sweden)

    Junfei Chen

    2013-02-01

    Full Text Available As the catastrophes cannot be avoided and result in huge economic losses, therefore the compensation issue for catastrophe losses become an important research topic. Catastrophe bonds can effectively disperse the catastrophe risks which mainly undertaken by the government and the insurance companies currently and focus on capital more effectively in broad capital market, therefore to be an ideal catastrophe securities product. This study adopts Expectancy Theory to supplement and improve the pricing of catastrophe bonds based on Value Theory. A model of expected utility is established to determine the conditions of the expected revenue R of catastrophe bonds. The pricing model of the value function is used to get the psychological value of R,U (R-R‾, for catastrophe bonds. Finally, the psychological value is improved by the value according to expected utility and this can more accurately evaluate catastrophe bonds at a reasonable price. This research can provide decision-making for the pricing of catastrophe bonds.

  12. Expectation values of chiral primary operators in holographic interface CFT

    OpenAIRE

    Nagasaki, Koichi; Yamaguchi, Satoshi

    2012-01-01

    We consider the expectation values of chiral primary operators in the presence of the interface in the 4 dimensional N=4 super Yang-Mills theory. This interface is derived from D3-D5 system in type IIB string theory. These expectation values are computed classically in the gauge theory side. On the other hand, this interface is a holographic dual to type IIB string theory on AdS_5 x S^5 spacetime with a probe D5-brane. The expectation values are computed by GKPW prescription in the gravity si...

  13. Neural representation of expected value in the adolescent brain.

    Science.gov (United States)

    Barkley-Levenson, Emily; Galván, Adriana

    2014-01-28

    Previous work shows that the adolescent reward system is hyperactive, but this finding may be confounded by differences in how teens value money. To address this, we examined the neural ontogeny of objective value representation. Adolescent and adult participants performed a monetary gambling task in which they chose to accept or reject gambles of varying expected value. Increasing expected value had a stronger influence over gambling choices in adolescents relative to adults, an effect that was paralleled by greater activation in the ventral striatum in adolescents. This unique adolescent ventral striatum response remained even after matching groups on acceptance behavior. These behavioral and neural data suggest that the value of available options has a greater influence in adolescent versus adult choices, even when objective value and subjective choice are held constant. This research provides further evidence that hyperactivation of reward circuitry in adolescence may be a normative ontogenetic shift that is due to greater valuation in the adolescent brain.

  14. Expectation Values and Variance Based on Lp-Norms

    Directory of Open Access Journals (Sweden)

    George Livadiotis

    2012-11-01

    Full Text Available This analysis introduces a generalization of the basic statistical concepts of expectation values and variance for non-Euclidean metrics induced by Lp-norms. The non-Euclidean Lp means are defined by exploiting the fundamental property of minimizing the Lp deviations that compose the Lp variance. These Lp expectation values embody a generic formal scheme of means characterization. Having the p-norm as a free parameter, both the Lp-normed expectation values and their variance are flexible to analyze new phenomena that cannot be described under the notions of classical statistics based on Euclidean norms. The new statistical approach provides insights into regression theory and Statistical Physics. Several illuminating examples are examined.

  15. Value orientations, expectations and voluntary contributions in public goods

    NARCIS (Netherlands)

    Offerman, T.J.S.; Schram, A.J.H.C.; Sonnemans, J.H.

    1996-01-01

    An experimental analysis of voluntary, binary contributions for step-level public goods is presented. Independent information is obtained on individual value orientation and expectations about the behavior of other subjects using incentive compatible mechanisms. The effects of increasing payoffs for

  16. Value Orientations, Expectations and Voluntary Contributions in Public Goods

    NARCIS (Netherlands)

    Sonnemans, J.; Schram, A.; Offermans, T.

    1996-01-01

    An experimental analysis of voluntary, binary contributions for step-level public goods is presented. Independent information is obtained on individual value orientation and expectations about the behavior of other subjects using incentive compatible mechanisms. The effects of increasing payoffs for

  17. Hamiltonian approach to Ehrenfest expectation values and Gaussian quantum states.

    Science.gov (United States)

    Bonet-Luz, Esther; Tronci, Cesare

    2016-05-01

    The dynamics of quantum expectation values is considered in a geometric setting. First, expectation values of the canonical observables are shown to be equivariant momentum maps for the action of the Heisenberg group on quantum states. Then, the Hamiltonian structure of Ehrenfest's theorem is shown to be Lie-Poisson for a semidirect-product Lie group, named the Ehrenfest group. The underlying Poisson structure produces classical and quantum mechanics as special limit cases. In addition, quantum dynamics is expressed in the frame of the expectation values, in which the latter undergo canonical Hamiltonian motion. In the case of Gaussian states, expectation values dynamics couples to second-order moments, which also enjoy a momentum map structure. Eventually, Gaussian states are shown to possess a Lie-Poisson structure associated with another semidirect-product group, which is called the Jacobi group. This structure produces the energy-conserving variant of a class of Gaussian moment models that have previously appeared in the chemical physics literature.

  18. Preoperative expectations and values of patients undergoing Mohs micrographic surgery.

    Science.gov (United States)

    Chuang, Gary S; Leach, Brian C; Wheless, Lee; Lang, Pearon G; Cook, Joel

    2011-03-01

    Dermatologists have championed Mohs micrographic surgery (MMS) for its unsurpassed treatment success for skin cancers, safety profile, cost-effectiveness, and tissue-sparing quality. It is unclear whether patients undergoing MMS also value these characteristics. To evaluate patients' preoperative expectations of MMS and identify the factors that may influence such expectations The study prospectively recruited participants who were newly diagnosed with skin cancer and referred for MMS. A questionnaire listing the characteristics of MMS was given to the participants asking them to score the importance of each characteristic on a 10-point scale. The participants were also asked to provide information regarding their gender, age, subjective health status, education level, family annual income, and their referral source On average, participants placed the highest value, in descending order, on a treatment that yielded the highest cure rate, reconstruction initiation only after complete tumor removal, and the surgeon being a skin cancer specialist. Overall, participants placed high values on characteristics of MMS that dermatologists have long esteemed. Our data corroborate that MMS is a valuable procedure that meets the expectations not just of physicians, but also of patients. The authors have indicated no significant interest with commercial supporters. © 2011 by the American Society for Dermatologic Surgery, Inc.

  19. Expectation-value approach to photon statistics in cavity QED

    Science.gov (United States)

    Goto, Hayato; Ichimura, Kouichi

    2004-08-01

    The second-order intensity correlation function for the light transmitted from a driven optical cavity containing identical two-level atoms is calculated in the weak-field limit by using the equations for expectation values of operators. Atomic nonradiative dephasing is taken into account in addition to cavity-field damping and atomic radiative decay. The correlation function including the atomic nonradiative dephasing rate is numerically calculated. An analytic expression for the correlation function is also derived in the case of purely radiative atomic decay.

  20. On the continuity of the vector valued and set valued conditional expectations

    Directory of Open Access Journals (Sweden)

    Nikolaos S. Papageorgiou

    1989-01-01

    Full Text Available In this paper we study the dependence of the vector valued conditional expectation (for both single valued and set valued random variables, on the σ–field and random variable that determine it. So we prove that it is continuous for the L1(X convergence of the sub–σ–fields and of the random variables. We also present a sufficient condition for the L1(X–convergence of the sub–σ–fields. Then we extend the work to the set valued conditional expectation using the Kuratowski–Mosco (K–M convergence and the convergence in the Δ–metric. We also prove a property of the set valued conditional expectation.

  1. Redox potential - field measurements - meassured vs. expected values

    Science.gov (United States)

    Stavělová, Monika; Kovář, Martin

    2016-04-01

    Oxidation and reduction (redox) potential is an important and theoretically very well defined parameter and can be calculated accurately. Its value is determinative for management of many electrochemical processes, chemical redox technologies as well as biotechnologies. To measure the redox value that would correspond with the accuracy level of theoretical calculations in field or operational conditions is however nearly impossible. Redox is in practice measured using combined argentochloride electrode with subsequent value conversion to standard hydrogen electrode (EH). Argentochloride electrode does not allow for precise calibration. Prior to the measurement the accuracy of measurement of particular electrode can only be verified in comparative/control solution with value corresponding with oxic conditions (25°C: +220 mV argentochloride electrode, i.e.. +427 mV after conversion to EH). A commercial product of stabile comparative solution for anoxic conditions is not available and therefore not used in every day practice - accuracy of negative redox is not verified. In this presentation results of two tests will be presented: a) monitoring during dynamic groundwater sampling from eight monitoring wells at a site contaminated by chlorinated ethenes (i.e. post-oxic to anoxic conditions) and b) laboratory test of groundwater contaminated by arsenic from two sites during reaction with highly oxidized compounds of iron (ferrates) - i.e. strongly oxic conditions. In both tests a simultaneous measurement by four argentochloride electrodes was implemented - all four electrodes were prior to the test maintained expertly. The redox values of testing electrodes in a comparative solution varied by max. 6 mV. The redox values measured by four electrodes in both anoxic and oxic variant varied by tens to a hundred mV, while with growing time of test the variance of measured redox values increased in both oxic and anoxic variant. Therefore the interpretation of measured redox

  2. Connecting Expectations and Values: Students' Perceptions of Developmental Mathematics in a Computer-Based Learning Environment

    Science.gov (United States)

    Jackson, Karen Latrice Terrell

    2014-01-01

    Students' perceptions influence their expectations and values. According to Expectations and Values Theory of Achievement Motivation (EVT-AM), students' expectations and values impact their behaviors (Eccles & Wigfield, 2002). This study seeks to find students' perceptions of developmental mathematics in a mastery learning computer-based…

  3. Probing for the Multiplicative Term in Modern Expectancy-Value Theory: A Latent Interaction Modeling Study

    Science.gov (United States)

    Trautwein, Ulrich; Marsh, Herbert W.; Nagengast, Benjamin; Ludtke, Oliver; Nagy, Gabriel; Jonkmann, Kathrin

    2012-01-01

    In modern expectancy-value theory (EVT) in educational psychology, expectancy and value beliefs additively predict performance, persistence, and task choice. In contrast to earlier formulations of EVT, the multiplicative term Expectancy x Value in regression-type models typically plays no major role in educational psychology. The present study…

  4. Probing for the Multiplicative Term in Modern Expectancy-Value Theory: A Latent Interaction Modeling Study

    Science.gov (United States)

    Trautwein, Ulrich; Marsh, Herbert W.; Nagengast, Benjamin; Ludtke, Oliver; Nagy, Gabriel; Jonkmann, Kathrin

    2012-01-01

    In modern expectancy-value theory (EVT) in educational psychology, expectancy and value beliefs additively predict performance, persistence, and task choice. In contrast to earlier formulations of EVT, the multiplicative term Expectancy x Value in regression-type models typically plays no major role in educational psychology. The present study…

  5. Quantum bounds for inequalities involving marginal expectation values

    Science.gov (United States)

    Wolfe, Elie; Yelin, S. F.

    2012-07-01

    We review and develop an algorithm to determine arbitrary quantum bounds based on the seminal work of Tsirelson [Lett. Math. Phys.LMPHDY0377-901710.1007/BF00417500 4, 93 (1980)]. The potential of this algorithm is demonstrated by both deriving marginal-involving number-valued quantum bounds and identifying a generalized class of function-valued quantum bounds. Those results facilitate an eight-dimensional volume analysis of quantum mechanics which extends the work of Cabello [Phys. Rev. APLRAAN1050-294710.1103/PhysRevA.72.012113 72, 012113 (2005)]. We contrast the quantum volume defined by these bounds to that of macroscopic locality, defined by the inequalities corresponding to the first level of the hierarchy of Navascués [New J. Phys.1367-263010.1088/1367-2630/10/7/073013 10, 073013 (2008e)], proving our function-valued quantum bounds to be more complete.

  6. Absurd Results from the Expression of Expectation Values of "Double-Wave Theory"

    Institute of Scientific and Technical Information of China (English)

    ZHU Zhen-He

    2003-01-01

    Two of the four fundamental hypotheses of the double-wave theory (DWT) are criticized. It is expounded that the hypothesis of two wavefunctions is unreasonable and the hypothesized expression of measured values or expectation values of mechanical quantities is incorrect and does not express the measured values or expectation values at all. This expression can lead to some absurd results.

  7. Expectation values of flavor-neutrino currents in field theoretical approach to oscillation problem -- formulation

    CERN Document Server

    Fujii, Kanji; Fujii, Kanji; Shimomura, Takashi

    2004-01-01

    As a possible approach to the neutrino oscillation on the basis of quantum field theory, the expectation values of the flavor-neutrino currents are investigated by employing the finite-time transition matrix in the interaction representation. Such expectation values give us in the simplest form a possible way of treating the neutrino oscillation without recourse to any one flavor-neutrino states. The present paper is devoted to presenting the formulation and the main structures of the relevant expectation values.

  8. Is Recess an Achievement Context? An Application of Expectancy-Value Theory to Playground Choices

    Science.gov (United States)

    Spencer-Cavaliere, Nancy; Dunn, Janice Causgrove; Watkinson, E. Jane

    2009-01-01

    This study investigated the application of an expectancy-value model to children's activity choices on the playground at recess. The purpose was to test the prediction that expectancies for success and subjective task values are related to decisions to engage in specific recess activities such as climbing, playing soccer, or skipping rope.…

  9. Expectation value of composite field $T{\\bar T}$ in two-dimensional quantum field theory

    OpenAIRE

    Zamolodchikov, Alexander B.

    2004-01-01

    I show that the expectation value of the composite field $T{\\bar T}$, built from the components of the energy-momentum tensor, is expressed exactly through the expectation value of the energy-momentum tensor itself. The relation is derived in two-dimensional quantum field theory under broad assumptions, and does not require integrability.

  10. Expectancy-Value and Cognitive Process Outcomes in Mathematics Learning: A Structural Equation Analysis

    Science.gov (United States)

    Phan, Huy P.

    2014-01-01

    Existing research has yielded evidence to indicate that the expectancy-value theoretical model predicts students' learning in various achievement contexts. Achievement values and self-efficacy expectations, for example, have been found to exert positive effects on cognitive process and academic achievement outcomes. We tested a conceptual model…

  11. Adolescent Expectancy-Value Motivation, Achievement in Physical Education, and Physical Activity Participation

    Science.gov (United States)

    Zhu, Xihe; Chen, Ang

    2013-01-01

    This study examined the relation between adolescent expectancy-value motivation, achievements, and after-school physical activity participation. Adolescents (N = 854) from 12 middle schools completed an expectancy-value motivation questionnaire, pre and posttests in psychomotor skill and health-related fitness knowledge tests, and a three-day…

  12. Resolving the theory of planned behaviour's 'expectancy-value muddle' using dimensional salience.

    Science.gov (United States)

    Newton, Joshua D; Ewing, Michael T; Burney, Sue; Hay, Margaret

    2012-01-01

    The theory of planned behaviour is one of the most widely used models of decision-making in the health literature. Unfortunately, the primary method for assessing the theory's belief-based expectancy-value models results in statistically uninterpretable findings, giving rise to what has become known as the 'expectancy-value muddle'. Moreover, existing methods for resolving this muddle are associated with various conceptual or practical limitations. This study addresses these issues by identifying and evaluating a parsimonious method for resolving the expectancy-value muddle. Three hundred and nine Australian residents aged 18-24 years rated the expectancy and value of 18 beliefs about posthumous organ donation. Participants also nominated their five most salient beliefs using a dimensional salience approach. Salient beliefs were perceived as being more likely to eventuate than non-salient beliefs, indicating that salient beliefs could be used to signify the expectancy component. The expectancy-value term was therefore represented by summing the value ratings of salient beliefs, an approach that predicted attitude (adjusted R2 = 0.21) and intention (adjusted R2 = 0.21). These findings suggest that the dimensional salience approach is a useful method for overcoming the expectancy-value muddle in applied research settings.

  13. Adults' Learning Motivation: Expectancy of Success, Value, and the Role of Affective Memories

    Science.gov (United States)

    Gorges, Julia; Kandler, Christian

    2012-01-01

    The present study tested the applicability of expectancy-value theory to adults' learning motivation. Motivation was measured as the anticipated reaction (AR) of German students (N = 300) to receiving their instructions in English as a new learning opportunity. We used structural equation modeling to test our hypotheses. Expectancies of success…

  14. Adults' Learning Motivation: Expectancy of Success, Value, and the Role of Affective Memories

    Science.gov (United States)

    Gorges, Julia; Kandler, Christian

    2012-01-01

    The present study tested the applicability of expectancy-value theory to adults' learning motivation. Motivation was measured as the anticipated reaction (AR) of German students (N = 300) to receiving their instructions in English as a new learning opportunity. We used structural equation modeling to test our hypotheses. Expectancies of success…

  15. Role Of Perceived Value, Customer Expectation, Corporate Image And Perceived Service Quality On The Customer Satisfaction

    National Research Council Canada - National Science Library

    Rizwan Ali; Gao Leifu; Muhammad YasirRafiq; Mudassar Hassan

    2015-01-01

      This study sets out to investigate the influence of perceived value, customer expectation, corporate image and perceived service quality on the customer satisfaction particularly in Pakistan telecommunication industry...

  16. Physical masses and the vacuum expectation value of the Higgs field

    OpenAIRE

    Cheng, Hung; S. P. Li

    1996-01-01

    By using the Ward-Takahashi identities in the Landau gauge, we derive exact relations between particle masses and the vacuum expectation value of the Higgs field in the Abelian gauge field theory with a Higgs meson.

  17. Correction: Expected values for pedometer-determined physical activity in older populations

    Directory of Open Access Journals (Sweden)

    Hart Teresa L

    2009-10-01

    Full Text Available Abstract Correction to Tudor-Locke C, Hart TL, Washington TL: Expected values for pedometer-determined physical activity in older populations. International Journal of Behavioral Nutrition and Physical Activity 2009, 6:59

  18. Hamiltonian approach to the dynamics of Ehrenfest expectation values and Gaussian quantum states

    CERN Document Server

    Bonet-Luz, Esther

    2015-01-01

    The dynamics of quantum expectation values is considered in a geometric setting. First, expectation values of the canonical operators are shown to be equivariant momentum maps for the action of the Heisenberg group on quantum states. Then, the Hamiltonian structure of Ehrenfest's theorem is shown to be Lie-Poisson for a semidirect-product Lie group, named the `Ehrenfest group'. In addition, quantum dynamics is expressed in the frame of the expectation values, in which the latter undergo canonical Hamiltonian motion. In the case of Gaussian states, expectation values dynamics couples to second-order moments, which also enjoy a momentum map structure. Eventually, Gaussian states are shown to possess a Lie-Poisson structure associated to a semidirect-product subgroup of the Ehrenfest group, which is called the Jacobi group. This structure produces new energy-conserving terms in a class of Gaussian moment models (previously appeared in the chemical physics literature) that suffer from lack of energy conservation ...

  19. Expectation values of flavor-neutrino currents in field theoretical approach to oscillation problem -- formulation

    OpenAIRE

    FUJII, Kanji; Shimomura, Takashi

    2004-01-01

    As a possible approach to the neutrino oscillation on the basis of quantum field theory, the expectation values of the flavor-neutrino currents are investigated by employing the finite-time transition matrix in the interaction representation. Such expectation values give us in the simplest form a possible way of treating the neutrino oscillation without recourse to any one flavor-neutrino states. The present paper is devoted to presenting the formulation and the main structures of the relevan...

  20. Expectancy-value theory in persistence of learning effects in schizophrenia: role of task value and perceived competency.

    Science.gov (United States)

    Choi, Jimmy; Fiszdon, Joanna M; Medalia, Alice

    2010-09-01

    Expectancy-value theory, a widely accepted model of motivation, posits that expectations of success on a learning task and the individual value placed on the task are central determinants of motivation to learn. This is supported by research in healthy controls suggesting that beliefs of self-and-content mastery can be so influential they can predict the degree of improvement on challenging cognitive tasks even more so than general cognitive ability. We examined components of expectancy-value theory (perceived competency and task value), along with baseline arithmetic performance and neuropsychological performance, as possible predictors of learning outcome in a sample of 70 outpatients with schizophrenia randomized to 1 of 2 different arithmetic learning conditions and followed up after 3 months. Results indicated that as with nonpsychiatric samples, perceived self-competency for the learning task was significantly related to perceptions of task value attributed to the learning task. Baseline expectations of success predicted persistence of learning on the task at 3-month follow-up, even after accounting for variance attributable to different arithmetic instruction, baseline arithmetic ability, attention, and self-reports of task interest and task value. We also found that expectation of success is a malleable construct, with posttraining improvements persisting at follow-up. These findings support the notion that expectancy-value theory is operative in schizophrenia. Thus, similar to the nonpsychiatric population, treatment benefits may be enhanced and better maintained if remediation programs also focus on perceptions of self-competency for the training tasks. Treatment issues related to instilling self-efficacy in cognitive recovery programs are discussed.

  1. Personal values as a mediator between parent and peer expectations and adolescent behaviors.

    Science.gov (United States)

    Padilla-Walker, Laura M; Carlo, Gustavo

    2007-09-01

    The current study examined the mediating role of adolescents' personal values on the relation between maternal and peer expectations for prosocial behaviors and adolescents' self-reported prosocial and antisocial behaviors. One hundred thirty-four adolescents (mean age = 16.22 years, 54% girls) completed measures of their own values and behaviors, as well as their perceptions of the positive expectations that their mother and their best friend(s) had for their (the adolescents') prosocial behaviors. Stepwise regression analyses suggested that adolescents' personal prosocial values mediated the relation between adolescents' perceptions of both maternal and peer expectations and adolescents' prosocial behaviors. In addition, for boys, perceptions of positive peer expectations were directly and negatively related to antisocial behaviors. The current study has important implications for parents, educators, and practitioners who are concerned about promoting adolescents' positive behaviors and discouraging negative behaviors.

  2. Self-Efficacy, Satisfaction, and Academic Achievement: The Mediator Role of Students' Expectancy-Value Beliefs

    Directory of Open Access Journals (Sweden)

    Fernando Doménech-Betoret

    2017-07-01

    Full Text Available Although there is considerable evidence to support the direct effects of self-efficacy beliefs on academic achievement, very few studies have explored the motivational mechanism that mediates the self-efficacy–achievement relationship, and they are necessary to understand how and why self-efficacy affects students' academic achievement. Based on a socio-cognitive perspective of motivation, this study examines the relationships among academic self-efficacy, students' expectancy-value beliefs, teaching process satisfaction, and academic achievement. Its main aim is to identify some motivational-underlying processes through which students' academic self-efficacy affects student achievement and satisfaction. Student achievement and satisfaction are two of the most important learning outcomes, and are considered key indicators of education quality. The sample comprises 797 Spanish secondary education students from 36 educational settings and three schools. The scales that referred to self-efficacy and expectancy-value beliefs were administered at the beginning of the course, while student satisfaction and achievement were measured at the end of the course. The data analysis was conducted by structural equation modeling (SEM. The results revealed that students' expectancy-value beliefs (Subject value, Process expectancy, Achievement expectancy, Cost expectancy played a mediator role between academic self-efficacy and the achievement/satisfaction relationship. These results provided empirical evidence to better understand the mechanism that mediates self-efficacy–achievement and efficacy–course satisfaction relationships. The implications of these findings for teaching and learning in secondary education are discussed.

  3. Self-Efficacy, Satisfaction, and Academic Achievement: The Mediator Role of Students' Expectancy-Value Beliefs.

    Science.gov (United States)

    Doménech-Betoret, Fernando; Abellán-Roselló, Laura; Gómez-Artiga, Amparo

    2017-01-01

    Although there is considerable evidence to support the direct effects of self-efficacy beliefs on academic achievement, very few studies have explored the motivational mechanism that mediates the self-efficacy-achievement relationship, and they are necessary to understand how and why self-efficacy affects students' academic achievement. Based on a socio-cognitive perspective of motivation, this study examines the relationships among academic self-efficacy, students' expectancy-value beliefs, teaching process satisfaction, and academic achievement. Its main aim is to identify some motivational-underlying processes through which students' academic self-efficacy affects student achievement and satisfaction. Student achievement and satisfaction are two of the most important learning outcomes, and are considered key indicators of education quality. The sample comprises 797 Spanish secondary education students from 36 educational settings and three schools. The scales that referred to self-efficacy and expectancy-value beliefs were administered at the beginning of the course, while student satisfaction and achievement were measured at the end of the course. The data analysis was conducted by structural equation modeling (SEM). The results revealed that students' expectancy-value beliefs (Subject value, Process expectancy, Achievement expectancy, Cost expectancy) played a mediator role between academic self-efficacy and the achievement/satisfaction relationship. These results provided empirical evidence to better understand the mechanism that mediates self-efficacy-achievement and efficacy-course satisfaction relationships. The implications of these findings for teaching and learning in secondary education are discussed.

  4. Expected net present value of sample information: from burden to investment.

    Science.gov (United States)

    Hall, Peter S; Edlin, Richard; Kharroubi, Samer; Gregory, Walter; McCabe, Christopher

    2012-01-01

    The Expected Value of Information Framework has been proposed as a method for identifying when health care technologies should be immediately reimbursed and when any reimbursement should be withheld while awaiting more evidence. This framework assesses the value of obtaining additional evidence to inform a current reimbursement decision. This represents the burden of not having the additional evidence at the time of the decision. However, when deciding whether to reimburse now or await more evidence, decision makers need to know the value of investing in more research to inform a future decision. Assessing this value requires consideration of research costs, research time, and what happens to patients while the research is undertaken and after completion. The investigators describe a development of the calculation of the expected value of sample information that assesses the value of investing in further research, including an only-in-research strategy and an only-with-research strategy.

  5. Investigating and improving student understanding of the expectation values of observables in quantum mechanics

    Science.gov (United States)

    Marshman, Emily; Singh, Chandralekha

    2017-07-01

    The expectation value of an observable is an important concept in quantum mechanics since measurement outcomes are, in general, probabilistic and we only have information about the probability distribution of measurement outcomes in a given quantum state of a system. However, we find that upper-level undergraduate and PhD students in physics have both conceptual and procedural difficulties when determining the expectation value of a physical observable in a given quantum state in terms of the eigenstates and eigenvalues of the corresponding operator, especially when using Dirac notation. Here we first describe the difficulties that these students have with determining the expectation value of an observable in Dirac notation. We then discuss how the difficulties found via student responses to written surveys and individual interviews were used as a guide in the development of a quantum interactive learning tutorial (QuILT) to help students develop a good grasp of the expectation value. The QuILT strives to help students integrate conceptual understanding and procedural skills to develop a coherent understanding of the expectation value. We discuss the effectiveness of the QuILT in helping students learn this concept from in-class evaluations.

  6. Expectancy beliefs and perceived values of Chinese college students in physical education and physical activity.

    Science.gov (United States)

    Chen, Ang; Liu, Xinlan

    2008-03-01

    The expectancy-value theory postulates that motivation relies on individuals' beliefs of success, perceived Attainment, Intrinsic Interest, and Utility values and Cost. This study examined Chinese college students' expectancy-value motivation in relation to physical education and self-initiated physical activity. A random sample of 368 Chinese university students responded to questionnaires on perceived expectancy beliefs, perceived values, and cost in terms of their experiences in mandatory physical education programs and in self-initiated after-school physical activity. They reported their choice decisions for continuing physical education. Data were analyzed using descriptive statistics, X2, logistic and linear regressions. The physical education curriculum was perceived as a major cost to motivation. Motivated by the Intrinsic Interest and Utility value, most students chose to continue to take physical education. Self-initiated after-school physical activity was motivated by the Attainment value only. No association was found between self-initiated physical activity and Liking or Disliking of physical education. Motivation for physical education and for self-initiated physical activity derived from different perceived values. The Attainment value motivates the students for self-initiated physical activity, whereas Intrinsic Interest and Utility values motivate them to choose to continue physical education.

  7. An expectancy-value model of emotion regulation: implications for motivation, emotional experience, and decision making.

    Science.gov (United States)

    Tamir, Maya; Bigman, Yochanan E; Rhodes, Emily; Salerno, James; Schreier, Jenna

    2015-02-01

    According to expectancy-value models of self-regulation, people are motivated to act in ways they expect to be useful to them. For instance, people are motivated to run when they believe running is useful, even when they have nothing to run away from. Similarly, we propose an expectancy-value model of emotion regulation, according to which people are motivated to emote in ways they expect to be useful to them, regardless of immediate contextual demands. For instance, people may be motivated to get angry when they believe anger is useful, even when there is nothing to be angry about. In 5 studies, we demonstrate that leading people to expect an emotion to be useful increased their motivation to experience that emotion (Studies 1-5), led them to up-regulate the experience of that emotion (Studies 3-4), and led to emotion-consistent behavior (Study 4). Our hypotheses were supported when we manipulated the expected value of anxiety (Study 1) and anger (Studies 2-5), both consciously (Studies 1-4) and unconsciously (Study 5). We discuss the theoretical and pragmatic implications of the proposed model.

  8. Calculation of Expectation Values of Operators in the Complex Scaling Method

    Science.gov (United States)

    Papadimitriou, G.

    2016-09-01

    The complex scaling method (CSM) provides with a way to obtain resonance parameters of particle unstable states by rotating the coordinates and momenta of the original Hamiltonian. It is convenient to use an L^2 integrable basis to resolve the complex rotated or complex scaled Hamiltonian H_{θ }, with θ being the angle of rotation in the complex energy plane. Within the CSM, resonance and scattering solutions have fall-off asymptotics. One of the consequences is that, expectation values of operators in a resonance or scattering complex scaled solution are calculated by complex rotating the operators. In this work we are exploring applications of the CSM on calculations of expectation values of quantum mechanical operators by using the regularized backrotation technique and calculating hence the expectation value using the unrotated operator. The test cases involve a schematic two-body Gaussian model and also applications using realistic interactions.

  9. Investigating Student Difficulties with Time dependence of Expectation Values in Quantum Mechanics

    CERN Document Server

    Marshman, Emily

    2015-01-01

    Quantum mechanics is challenging even for advanced undergraduate and graduate students. In the Schr\\"odinger representation, the wave function evolves in time according to the time dependent Schr\\"odinger equation. The time dependence of the wave function gives rise to time dependence of the expectation value of observables. We have been exploring the difficulties that advanced undergraduate and graduate students have with time dependence of expectation values in quantum mechanics. We have developed and administered conceptual free response and multiple-choice questions to students to investigate these difficulties. We also interviewed 23 students individually using a think-aloud protocol to obtain a better understanding of the rationale behind students' written responses. We find that many students struggle with time dependence of expectation values of observables. We discuss some findings.

  10. Hypervirial approach to calculating expectation values of the many-body Hamiltonian

    Science.gov (United States)

    Adam, R. M.; Fiedeldey, H.

    1995-05-01

    We present a new method, based on the hypervirial operator, for calculating expectation values of many-body Hamiltonians for local velocity-independent potentials. Our approach enables us to calculate the contributions of different components of an interaction [e.g., tensor, one pion exchange part (OPEP)] to the binding energy when all components are acting. In particular, using the integro-differential equation approach we investigate the contributions of different components of realistic nucleon-nucleon potentials to the triton and α particle ground-state binding energies. Although the tensor force contributes the most to the expectation value of the potential energy, we find that its overall contribution to the binding energy is much reduced by its large contribution to the expectation value of the kinetic energy.

  11. Implicit Theories, Expectancies, and Values Predict Mathematics Motivation and Behavior across High School and College.

    Science.gov (United States)

    Priess-Groben, Heather A; Hyde, Janet Shibley

    2017-06-01

    Mathematics motivation declines for many adolescents, which limits future educational and career options. The present study sought to identify predictors of this decline by examining whether implicit theories assessed in ninth grade (incremental/entity) predicted course-taking behaviors and utility value in college. The study integrated implicit theory with variables from expectancy-value theory to examine potential moderators and mediators of the association of implicit theories with college mathematics outcomes. Implicit theories and expectancy-value variables were assessed in 165 American high school students (47 % female; 92 % White), who were then followed into their college years, at which time mathematics courses taken, course-taking intentions, and utility value were assessed. Implicit theories predicted course-taking intentions and utility value, but only self-concept of ability predicted courses taken, course-taking intentions, and utility value after controlling for prior mathematics achievement and baseline values. Expectancy for success in mathematics mediated associations between self-concept of ability and college outcomes. This research identifies self-concept of ability as a stronger predictor than implicit theories of mathematics motivation and behavior across several years: math self-concept is critical to sustained engagement in mathematics.

  12. The expected value of possession in professional rugby league match-play.

    Science.gov (United States)

    Kempton, Thomas; Kennedy, Nicholas; Coutts, Aaron J

    2016-01-01

    This study estimated the expected point value for starting possessions in different field locations during rugby league match-play and calculated the mean expected points for each subsequent play during the possession. It also examined the origin of tries scored according to the method of gaining possession. Play-by-play data were taken from all 768 regular-season National Rugby League (NRL) matches during 2010-2013. A probabilistic model estimated the expected point outcome based on the net difference in points scored by a team in possession in a given situation. An iterative method was used to approximate the value of each situation based on actual scoring outcomes. Possessions commencing close to the opposition's goal-line had the highest expected point equity, which decreased as the location of the possession moved towards the team's own goal-line. Possessions following an opposition error, penalty or goal-line dropout had the highest likelihood of a try being scored on the set subsequent to their occurrence. In contrast, possessions that follow an opposition completed set or a restart were least likely to result in a try. The expected point values framework from our model has applications for informing playing strategy and assessing individual and team performance in professional rugby league.

  13. On the expected value function of a simple integer recourse problem with random technology matrix

    NARCIS (Netherlands)

    Klein Haneveld, Willem K.; van der Vlerk, Maarten H.

    1994-01-01

    In this paper we consider the expected value function of a stochastic simple recourse program with random technology matrix and integer variables in the second stage. Due to its separability the analysis is straightforward. Conditions for finiteness, continuity, Lipschitz continuity and

  14. Computation of expectation values from vibrational coupled-cluster at the two-mode coupling level

    DEFF Research Database (Denmark)

    Zoccante, Alberto; Seidler, Peter; Christiansen, Ove

    2011-01-01

    In this work we show how the vibrational coupled-cluster method at the two-mode coupling level can be used to calculate zero-point vibrational averages of properties. A technique is presented, where any expectation value can be calculated using a single set of Lagrangian multipliers computed...

  15. Locus of Control and Academic Achievement: Integrating Social Learning Theory and Expectancy-Value Theory

    Science.gov (United States)

    Youse, Keith Edward

    2012-01-01

    The current study examines predictors of math achievement and college graduation by integrating social learning theory and expectancy-value theory. Data came from a nationally-representative longitudinal database tracking 12,144 students over twelve years from 8th grade forward. Models for math achievement and college graduation were tested…

  16. Expectancy-Value models of health behaviour: the role of salience and anticipated affect

    NARCIS (Netherlands)

    van der Pligt, J.; de Vries, N.K.

    1998-01-01

    Expectancy-value models of health behaviour are based upon the assumption that this behaviour is determined by a subjective cost-benefit analysis. Generally, these models emphasize cognitive appraisal processes focusing on the likelihood and evaluation of the consequences of health-related

  17. Computation of expectation values from vibrational coupled-cluster at the two-mode coupling level

    DEFF Research Database (Denmark)

    Zoccante, Alberto; Seidler, Peter; Christiansen, Ove

    2011-01-01

    In this work we show how the vibrational coupled-cluster method at the two-mode coupling level can be used to calculate zero-point vibrational averages of properties. A technique is presented, where any expectation value can be calculated using a single set of Lagrangian multipliers computed...

  18. Social Influences, School Motivation and Gender Differences: An Application of the Expectancy-Value Theory

    Science.gov (United States)

    Fan, Weihua

    2011-01-01

    The present study examined the structural relations of social influences, task values, ability beliefs, educational expectation and academic engagement for both boys and girls. The structural equation modelling analyses provided nationally representative evidence of gender differences in: (1) the links from teacher-student relationship and peer…

  19. Parents' Expectations, Values and Choice of Child Care: Connections to Culture.

    Science.gov (United States)

    Wise, Sarah

    2002-01-01

    Effects of differences between home and child care were studied, focusing on expectations and values of caregivers and of parents of toddlers in Australia from Vietnamese, Somali, and Anglo-Australian backgrounds. Preliminary data show that parents from minority ethnic groups selected child care paralleling child's home experiences. Parents using…

  20. Locus of Control and Academic Achievement: Integrating Social Learning Theory and Expectancy-Value Theory

    Science.gov (United States)

    Youse, Keith Edward

    2012-01-01

    The current study examines predictors of math achievement and college graduation by integrating social learning theory and expectancy-value theory. Data came from a nationally-representative longitudinal database tracking 12,144 students over twelve years from 8th grade forward. Models for math achievement and college graduation were tested…

  1. An Expectancy-Value Perspective of Civic Education Motivation, Learning and Desirable Outcomes

    Science.gov (United States)

    Liem, Gregory Arief D.; Chua, Bee Leng

    2013-01-01

    The present study assessed the mediating role of expectancy for success and value beliefs in civic education in linking socio-academic factors (gender, ethnicity, school level and prior achievement) to desirable civic attributes. The sample comprised 1664 students in their Year-7-Year-12 (mean age = 14.79, range = 12-18). Structural equation…

  2. Expectancy-Value models of health behaviour: the role of salience and anticipated affect

    NARCIS (Netherlands)

    van der Pligt, J.; de Vries, N.K.

    1998-01-01

    Expectancy-value models of health behaviour are based upon the assumption that this behaviour is determined by a subjective cost-benefit analysis. Generally, these models emphasize cognitive appraisal processes focusing on the likelihood and evaluation of the consequences of health-related behaviour

  3. Interactions among Domain-Specific Expectancies, Values, and Gender: Predictors of Test Anxiety during Early Adolescence

    Science.gov (United States)

    Selkirk, Laura C.; Bouchey, Heather A.; Eccles, Jacquelynne S.

    2011-01-01

    This research focuses on the interaction between students' domain-specific expectancies and values as a predictor of test anxiety. A subsample of adolescents from the MSALT dataset are used in the current study; students complete measures during the spring of sixth grade and again during the spring of seventh grade. Overall, findings provide…

  4. Vacuum expectation value asymptotics for second order differential operators on manifolds with boundary

    CERN Document Server

    Branson, T P; Vasilevich, D V

    1998-01-01

    Let M be a compact Riemannian manifold with smooth boundary. We study the vacuum expectation value of an operator Q by studying Tr Qe^{-tD}, where D is an operator of Laplace type on M, and where Q is a second order operator with scalar leading symbol; we impose Dirichlet or modified Neumann boundary conditions.

  5. A calculation for radial expectation values of helium like actinide ions (Z=89-93)

    Science.gov (United States)

    Ürer, G.; Arslan, M.; Balkaya, E.; Keçeli, A.

    2016-03-01

    Radial expectation values, , for helium like actinides (ZAc=89, ZTh=90, ZPa=91, ZU=92, and ZNp=93) are reported using the Multiconfiguration Hartree-Fock (MCHF) within the framework Breit-Pauli corrections. Atomic data as energy levels, wavelengths, weighted oscillator strengths, and transition probabilities for allowed and forbidden transitions need these calculations. The obtained results are compared available works.

  6. Estimation of expected value and coefficient of variation for lognormal and gamma distributions

    Energy Technology Data Exchange (ETDEWEB)

    White, G.C.

    1978-07-01

    Concentrations of environmental pollutants tend to follow positively skewed frequency distributions. Two such density functions are the gamma and lognormal. Minimum variance unbiased estimators of the expected value for both densities are available. The small sample statistical properties of each of these estimators were compared for their own distributions, as well as for the other distribution, to check the robustness of the estimator. The arithmetic mean is known to provide an unbiased estimator of expected value when the underlying density of the sample is either lognormal or gamma, and results indicated the achieved coverage of the confidence interval is greater than 75 percent for coefficients of variation less than two. Further Monte Carlo simulations were conducted to study the robustness of the above estimators by simulating a lognormal or gamma distribution with the expected value of a particular observation selected from a uniform distribution before the lognormal or gamma observation is generated. Again, the arithmetic mean provides an unbiased estimate of expected value, and the achieved coverage of the confidence interval is greater than 75 percent for coefficients of variation less than two.

  7. Cognitive reappraisal modulates expected value and prediction error encoding in the ventral striatum.

    Science.gov (United States)

    Staudinger, Markus R; Erk, Susanne; Abler, Birgit; Walter, Henrik

    2009-08-15

    In addiction, loss of prefrontal inhibitory control is believed to contribute to impulsivity. To improve cognitive therapy approaches, it is important to determine whether cognitive control strategies can generally influence reward processing at the neural level. We investigated the effects of one such strategy--namely, reappraisal (distancing from feelings)--on neural reward processing in 16 healthy subjects by utilizing event-related functional magnetic resonance imaging (fMRI). In a monetary incentive delay task, expected reward value (expecting to win 0.50 euro vs. 0.10 euro) and outcome valence (win vs. omission) were varied. An attenuation of expected value and a modulation of prediction error (PE) coding caused by distancing were found in right vs. left ventral striatum (VST) in the expectation vs. outcome period, respectively. Distancing from reward feelings recruited a right hemispheric fronto-parietal network. Moreover, self-reported reappraisal success (decrease of feelings by distancing) showed a trend toward positive correlation with activation in the rostral cingulate zone and the lateral orbitofrontal cortex, both part of the regulation network. Our results expand upon recent findings by showing that cognitive control over reward processing impacts not only the expectation period but also the reward signals in the outcome period. Moreover, increased recruitment of prefrontal reflective subsystems might enhance deliberate control over both reward processing and hedonic experience.

  8. Quantum correction to tiny vacuum expectation value in two Higgs doublet model for Dirac neutrino mass

    CERN Document Server

    Morozumi, Takuya; Tamai, Kotaro

    2011-01-01

    We study a Dirac neutrino mass model of Davidson and Logan. In the model, the smallness of the neutrino mass is originated from the small vacuum expectation value of the second Higgs of two Higgs doublets. We study the one loop effective potential of the Higgs sector and examine how the small vacuum expectation is stable under the radiative correction. By deriving formulae of the radiative correction, we numerically study how large the one loop correction is and show how it depends on the quadratic mass terms and quartic couplings of the Higgs potential. The correction changes depending on the various scenarios for extra Higgs mass spectrum.

  9. Computing the Expected Values of some Properties of Randomly Weighted Graphs

    CERN Document Server

    Emek, Yuval; Shavitt, Yuval

    2009-01-01

    Consider the setting of \\emph{randomly weighted graphs}, namely, graphs whose edge weights are independent discrete random variables with finite support over the non-negative reals. Given a randomly weighted graph $G$, we are interested in computing the expected values of various graph properties of $G$. In particular, we focus on the problem of computing the expected diameter of $G$. It is easy to show that this problem is \\SharpP-hard even in the restricted case in which all edge weights are identically distributed. In this paper we prove that this problem admits a \\emph{fully polynomial time randomized approximation scheme (FPRAS)}. Our technique can also be used to derive an FPRAS for the problem of computing the expected weight of an MST of $G$.

  10. Impact of expected value on neural activity in rat substantia nigra pars reticulata.

    Science.gov (United States)

    Bryden, Daniel W; Johnson, Emily E; Diao, Xiayang; Roesch, Matthew R

    2011-06-01

    The substantia nigra pars reticulata (SNr) is thought to serve as the output of the basal ganglia, whereby associative information from striatum influences behavior via disinhibition of downstream motor areas to motivate behavior. Unfortunately, few studies have examined activity in SNr in rats making decisions based on the value of predicted reward similar to those conducted in primates. To fill this void, we recorded from single neurons in SNr while rats performed a choice task in which different odor cues indicated what reward was available on the left or on the right. The value of reward associated with a leftward or rightward movement was manipulated by varying the size of and delay to reward in separate blocks of trials. Rats were faster or slower depending on whether the expected reward value was high or low, respectively. The number of neurons that increased firing during performance of the task outnumbered those that decreased firing. Both increases and decreases were modulated by expected value and response direction. Neurons that fired more or less strongly for larger reward tended to fire, respectively, more or less strongly for immediate reward, reflecting their common motivational output. Finally, value selectivity was present prior to presentation of cues indicating the nature of the upcoming behavioral response for both increasing- and decreasing-type neurons, reflecting the internal bias or preparatory set of the rat. These results emphasize the importance of increasing-type neurons on behavioral output when animals are making decisions based on predicted reward value.

  11. Direct measurement of large-scale quantum states via expectation values of non-Hermitian matrices

    Science.gov (United States)

    Bolduc, Eliot; Gariepy, Genevieve; Leach, Jonathan

    2016-01-01

    In quantum mechanics, predictions are made by way of calculating expectation values of observables, which take the form of Hermitian operators. Non-Hermitian operators, however, are not necessarily devoid of physical significance, and they can play a crucial role in the characterization of quantum states. Here we show that the expectation values of a particular set of non-Hermitian matrices, which we call column operators, directly yield the complex coefficients of a quantum state vector. We provide a definition of the state vector in terms of measurable quantities by decomposing these column operators into observables. The technique we propose renders very-large-scale quantum states significantly more accessible in the laboratory, as we demonstrate by experimentally characterizing a 100,000-dimensional entangled state. This represents an improvement of two orders of magnitude with respect to previous phase-and-amplitude characterizations of discrete entangled states.

  12. Chern-Simons expectation values and quantum horizons from loop quantum gravity and the Duflo map.

    Science.gov (United States)

    Sahlmann, Hanno; Thiemann, Thomas

    2012-03-16

    We report on a new approach to the calculation of Chern-Simons theory expectation values, using the mathematical underpinnings of loop quantum gravity, as well as the Duflo map, a quantization map for functions on Lie algebras. These new developments can be used in the quantum theory for certain types of black hole horizons, and they may offer new insights for loop quantum gravity, Chern-Simons theory and the theory of quantum groups.

  13. Renormalised fermion vacuum expectation values on anti-de Sitter space–time

    Energy Technology Data Exchange (ETDEWEB)

    Ambruș, Victor E., E-mail: Victor.Ambrus@gmail.com [Center for Fundamental and Advanced Technical Research, Romanian Academy, Bd. Mihai Viteazul 24, Timișoara 300223 (Romania); Winstanley, Elizabeth, E-mail: E.Winstanley@sheffield.ac.uk [Consortium for Fundamental Physics, School of Mathematics and Statistics, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH (United Kingdom)

    2015-10-07

    The Schwinger–de Witt and Hadamard methods are used to obtain renormalised vacuum expectation values for the fermion condensate, charge current and stress-energy tensor of a quantum fermion field of arbitrary mass on four-dimensional anti-de Sitter space–time. The quantum field is in the global anti-de Sitter vacuum state. The results are compared with those obtained using the Pauli–Villars and zeta-function regularisation methods, respectively.

  14. Renormalised fermion vacuum expectation values on anti-de Sitter space–time

    Directory of Open Access Journals (Sweden)

    Victor E. Ambruș

    2015-10-01

    Full Text Available The Schwinger–de Witt and Hadamard methods are used to obtain renormalised vacuum expectation values for the fermion condensate, charge current and stress-energy tensor of a quantum fermion field of arbitrary mass on four-dimensional anti-de Sitter space–time. The quantum field is in the global anti-de Sitter vacuum state. The results are compared with those obtained using the Pauli–Villars and zeta-function regularisation methods, respectively.

  15. Expected-value techniques for Monte Carlo modeling of well logging problems

    Energy Technology Data Exchange (ETDEWEB)

    Mosher, Scott W. [Claremont Research Institute of Applied Mathematical Sciences, School of Mathematics, Claremont Graduate University, Claremont, CA 91711 (United States); Maucec, Marko, E-mail: marko.maucec@halliburton.co [Claremont Research Institute of Applied Mathematical Sciences, School of Mathematics, Claremont Graduate University, Claremont, CA 91711 (United States); Spanier, Jerome [Claremont Research Institute of Applied Mathematical Sciences, School of Mathematics, Claremont Graduate University, Claremont, CA 91711 (United States); Badruzzaman, Ahmed; Chedester, Clint [ChevronTexaco Energy Technology Company, 6001 Bollinger Canyon Road, D-2208, San Ramon, CA 94583 (United States); Evans, Michael [Schlumberger, 110 Gillingham Lane, Sugar Land, TX 77478 (United States)

    2010-02-01

    This article describes research performed to develop an expected-value (EV) estimation capability for improving the efficiency of Monte Carlo simulations of oil well logging problems. The basic idea underlying EV estimation is that event-level interaction and transport probabilities are known and can be averaged exactly to produce unbiased estimators that properly account for potential future events in the simulation. Conventional surface-crossing and track-length based estimators do not provide any information unless a particle history actually reaches a detector region. Expected-value estimators, however, can extract information from particles that merely travel along a direction intercepting the detector region. This paper describes two expected-value estimators that have been developed for oil well logging simulations. The first estimates the volume-averaged scalar flux or reaction rate in a detector. The second estimates a weighted surface-averaged incident current that can be enfolded with a detector response function to estimate pulse-height spectra. Though EV estimation reduces variance at the event level, it does not guarantee reduced variance at the history level. However, our oil well logging tests indicate that the EV approach generally improves information content, enhances the efficiency of the transport simulation, and provides an efficient technique to obtain the fluxes, reaction rates, and pulse-height spectra in detectors, especially when applied in conjunction with weight-window variance reduction techniques.

  16. The dimensional salience solution to the expectancy-value muddle: an extension.

    Science.gov (United States)

    Newton, Joshua D; Newton, Fiona J; Ewing, Michael T

    2014-01-01

    The theory of reasoned action (TRA) specifies a set of expectancy-value, belief-based frameworks that underpin attitude (behavioural beliefs × outcome evaluations) and subjective norm (normative beliefs × motivation to comply). Unfortunately, the most common method for analysing these frameworks generates statistically uninterpretable findings, resulting in what has been termed the 'expectancy-value muddle'. Recently, however, a dimensional salience approach was found to resolve this muddle for the belief-based framework underpinning attitude. An online survey of 262 participants was therefore conducted to determine whether the dimensional salience approach could also be applied to the belief-based framework underpinning subjective norm. Results revealed that motivations to comply were greater for salient, as opposed to non-salient, social referents. The belief-based framework underpinning subjective norm was therefore represented by evaluating normative belief ratings for salient social referents. This modified framework was found to predict subjective norm, although predictions were greater when participants were forced to select five salient social referents rather than being free to select any number of social referents. These findings validate the use of the dimensional salience approach for examining the belief-based frameworks underpinning subjective norm. As such, this approach provides a complete solution to addressing the expectancy-value muddle in the TRA.

  17. Understanding Students' Motivation in Sport and Physical Education: From the Expectancy-Value Model and Self-Efficacy Theory Perspectives

    Science.gov (United States)

    Gao, Zan; Lee, Amelia M.; Harrison, Louis, Jr.

    2008-01-01

    In this article, the roles of individuals' expectancy beliefs and incentives (i.e., task value, outcome expectancy) in sport and physical education are examined from expectancy-value model and self-efficacy theory perspectives. Overviews of the two theoretical frameworks and the conceptual and measurement issues are provided, followed by a review…

  18. Understanding Students' Motivation in Sport and Physical Education: From the Expectancy-Value Model and Self-Efficacy Theory Perspectives

    Science.gov (United States)

    Gao, Zan; Lee, Amelia M.; Harrison, Louis, Jr.

    2008-01-01

    In this article, the roles of individuals' expectancy beliefs and incentives (i.e., task value, outcome expectancy) in sport and physical education are examined from expectancy-value model and self-efficacy theory perspectives. Overviews of the two theoretical frameworks and the conceptual and measurement issues are provided, followed by a review…

  19. Synergistic Effects of Expectancy and Value on Homework Engagement: The Case for a Within-Person Perspective.

    Science.gov (United States)

    Nagengast, Benjamin; Trautwein, Ulrich; Kelava, Augustin; Lüdtke, Oliver

    2013-05-01

    Historically, expectancy-value models of motivation assumed a synergistic relation between expectancy and value: motivation is high only when both expectancy and value are high. Motivational processes were studied from a within-person perspective, with expectancies and values being assessed or experimentally manipulated across multiple domains and the focus being placed on intraindividual differences. In contrast, contemporary expectancy-value models in educational psychology concentrate almost exclusively on linear effects of expectancy and value on motivational outcomes, with a focus on between-person differences. Recent advances in latent variable methodology allow both issues to be addressed in observational studies. Using the expectancy-value model of homework motivation as a theoretical framework, this study estimated multilevel structural equation models with latent interactions in a sample of 511 secondary school students and found synergistic effects between domain-specific homework expectancy and homework value in predicting homework engagement in 6 subjects. This approach not only brings the "×" back into expectancy-value theory but also reestablishes the within-person perspective as the appropriate level of analysis for latent expectancy-value models.

  20. Pressurizing the STEM Pipeline: an Expectancy-Value Theory Analysis of Youths' STEM Attitudes

    Science.gov (United States)

    Ball, Christopher; Huang, Kuo-Ting; Cotten, Shelia R.; Rikard, R. V.

    2017-08-01

    Over the past decade, there has been a strong national push to increase minority students' positive attitudes towards STEM-related careers. However, despite this focus, minority students have remained underrepresented in these fields. Some researchers have directed their attention towards improving the STEM pipeline which carries students through our educational system and into STEM careers. Previous research has shown that expectancy-value theory (EVT) is useful for examining the short-term as well as long-term academic motivations and intentions of elementary age minority students. These findings provide insights into ways we may be able to potentially "patch" particular STEM pipeline leaks. In the current study, we advance this research by using EVT as a framework to examine the STEM attitudes of young students directly. We hypothesize that students' academic-related expectancies for success and subjective task values will be associated with an increase in STEM attitudes. Data for this study was gathered over the course of a large-scale computing intervention which sought to increase students' STEM interest. This computing intervention took place in an urban elementary school district located within the southeastern USA. Results from this study indicate that both intrinsic values and utility values predict students' STEM attitudes but they influence attitudes related to the various dimensions of STEM differently. These findings demonstrate that EVT provides a useful framework, which can be integrated into future computing interventions, to help encourage positive STEM attitudes in young children, thus increasing the internal pressure (or flow) within the STEM pipeline.

  1. Pressurizing the STEM Pipeline: an Expectancy-Value Theory Analysis of Youths' STEM Attitudes

    Science.gov (United States)

    Ball, Christopher; Huang, Kuo-Ting; Cotten, Shelia R.; Rikard, R. V.

    2017-01-01

    Over the past decade, there has been a strong national push to increase minority students' positive attitudes towards STEM-related careers. However, despite this focus, minority students have remained underrepresented in these fields. Some researchers have directed their attention towards improving the STEM pipeline which carries students through our educational system and into STEM careers. Previous research has shown that expectancy-value theory (EVT) is useful for examining the short-term as well as long-term academic motivations and intentions of elementary age minority students. These findings provide insights into ways we may be able to potentially "patch" particular STEM pipeline leaks. In the current study, we advance this research by using EVT as a framework to examine the STEM attitudes of young students directly. We hypothesize that students' academic-related expectancies for success and subjective task values will be associated with an increase in STEM attitudes. Data for this study was gathered over the course of a large-scale computing intervention which sought to increase students' STEM interest. This computing intervention took place in an urban elementary school district located within the southeastern USA. Results from this study indicate that both intrinsic values and utility values predict students' STEM attitudes but they influence attitudes related to the various dimensions of STEM differently. These findings demonstrate that EVT provides a useful framework, which can be integrated into future computing interventions, to help encourage positive STEM attitudes in young children, thus increasing the internal pressure (or flow) within the STEM pipeline.

  2. Drivers Of Health As A Shared Value: Mindset, Expectations, Sense Of Community, And Civic Engagement.

    Science.gov (United States)

    Chandra, Anita; Miller, Carolyn E; Acosta, Joie D; Weilant, Sarah; Trujillo, Matthew; Plough, Alonzo

    2016-11-01

    Making health a shared value is central to building a culture of health, a new action framework intended to spur faster progress toward equitable health outcomes in the United States. Unlike in other US social movements, such as the environmental and civil rights movements, the necessary understanding of shared values has not yet been achieved for health. Discussions about values regarding health have primarily focused on health care instead of health or well-being. These discussions have not progressed to a clear focus on prioritizing values on health instead of simply health care. The evidence base for understanding health as a shared value is only now emerging. Making health a shared value is the first of four Action Areas in the Robert Wood Johnson Foundation's Culture of Health Action Framework. We assert that the achievement of this shared understanding of health as a cultural value will be enhanced through action in specific drivers: mindset and expectations, sense of community, and civic engagement. Building on a literature review and stakeholder engagement, this article examines the evidence base for these drivers and identifies where policy and research actions are needed to advance positive change on population health and well-being outcomes.

  3. Signatures of wave packet revival phenomena in the expectation values of observables

    CERN Document Server

    Sudheesh, C; Balakrishnan, V

    2004-01-01

    Wave packet revivals and fractional revivals are striking quantum interference phenomena that can occur under suitable conditions in a system with a nonlinear spectrum. In the framework of a specific model (the propagation of an initially coherent wave packet in a Kerr-like medium), it is shown that distinctive signatures of these revivals and fractional revivals are displayed by the time evolution of the expectationWave packet revivals and fractional revivals are striking quantum interference phenomena that can occur under suitable conditions in a system with a nonlinear spectrum. In the framework of a specific model (the propagation of an initially coherent wave packet in a Kerr-like medium), it is shown that distinctive signatures of these revivals and fractional revivals are displayed by the time evolution of the expectation values of physical observables and their powers, i.e., by experimentally measurable quantities. Moreover, different fractional revivals can be selectively identified by examining appr...

  4. The expected value of control: an integrative theory of anterior cingulate cortex function.

    Science.gov (United States)

    Shenhav, Amitai; Botvinick, Matthew M; Cohen, Jonathan D

    2013-07-24

    The dorsal anterior cingulate cortex (dACC) has a near-ubiquitous presence in the neuroscience of cognitive control. It has been implicated in a diversity of functions, from reward processing and performance monitoring to the execution of control and action selection. Here, we propose that this diversity can be understood in terms of a single underlying function: allocation of control based on an evaluation of the expected value of control (EVC). We present a normative model of EVC that integrates three critical factors: the expected payoff from a controlled process, the amount of control that must be invested to achieve that payoff, and the cost in terms of cognitive effort. We propose that dACC integrates this information, using it to determine whether, where and how much control to allocate. We then consider how the EVC model can explain the diverse array of findings concerning dACC function.

  5. Using the Expectancy-Value Theory of Motivation to Predict Behavioral and Emotional Risk among High School Students

    Science.gov (United States)

    Dever, Bridget V.

    2016-01-01

    Within the expectancy-value framework, much work has been done linking expectancies and task values to academic outcomes such as performance, persistence, and choice. Research on the associations between student motivation (including efficacy and task values) and behavioral and emotional problems, however, is nascent. The present study examined a…

  6. Strategies for efficient computation of the expected value of partial perfect information.

    Science.gov (United States)

    Madan, Jason; Ades, Anthony E; Price, Malcolm; Maitland, Kathryn; Jemutai, Julie; Revill, Paul; Welton, Nicky J

    2014-04-01

    Expected value of information methods evaluate the potential health benefits that can be obtained from conducting new research to reduce uncertainty in the parameters of a cost-effectiveness analysis model, hence reducing decision uncertainty. Expected value of partial perfect information (EVPPI) provides an upper limit to the health gains that can be obtained from conducting a new study on a subset of parameters in the cost-effectiveness analysis and can therefore be used as a sensitivity analysis to identify parameters that most contribute to decision uncertainty and to help guide decisions around which types of study are of most value to prioritize for funding. A common general approach is to use nested Monte Carlo simulation to obtain an estimate of EVPPI. This approach is computationally intensive, can lead to significant sampling bias if an inadequate number of inner samples are obtained, and incorrect results can be obtained if correlations between parameters are not dealt with appropriately. In this article, we set out a range of methods for estimating EVPPI that avoid the need for nested simulation: reparameterization of the net benefit function, Taylor series approximations, and restricted cubic spline estimation of conditional expectations. For each method, we set out the generalized functional form that net benefit must take for the method to be valid. By specifying this functional form, our methods are able to focus on components of the model in which approximation is required, avoiding the complexities involved in developing statistical approximations for the model as a whole. Our methods also allow for any correlations that might exist between model parameters. We illustrate the methods using an example of fluid resuscitation in African children with severe malaria.

  7. Gauge-invariant expectation values of the energy of a molecule in an electromagnetic field.

    Science.gov (United States)

    Mandal, Anirban; Hunt, Katharine L C

    2016-01-28

    In this paper, we show that the full Hamiltonian for a molecule in an electromagnetic field can be separated into a molecular Hamiltonian and a field Hamiltonian, both with gauge-invariant expectation values. The expectation value of the molecular Hamiltonian gives physically meaningful results for the energy of a molecule in a time-dependent applied field. In contrast, the usual partitioning of the full Hamiltonian into molecular and field terms introduces an arbitrary gauge-dependent potential into the molecular Hamiltonian and leaves a gauge-dependent form of the Hamiltonian for the field. With the usual partitioning of the Hamiltonian, this same problem of gauge dependence arises even in the absence of an applied field, as we show explicitly by considering a gauge transformation from zero applied field and zero external potentials to zero applied field, but non-zero external vector and scalar potentials. We resolve this problem and also remove the gauge dependence from the Hamiltonian for a molecule in a non-zero applied field and from the field Hamiltonian, by repartitioning the full Hamiltonian. It is possible to remove the gauge dependence because the interaction of the molecular charges with the gauge potential cancels identically with a gauge-dependent term in the usual form of the field Hamiltonian. We treat the electromagnetic field classically and treat the molecule quantum mechanically, but nonrelativistically. Our derivation starts from the Lagrangian for a set of charged particles and an electromagnetic field, with the particle coordinates, the vector potential, the scalar potential, and their time derivatives treated as the variables in the Lagrangian. We construct the full Hamiltonian using a Lagrange multiplier method originally suggested by Dirac, partition this Hamiltonian into a molecular term Hm and a field term Hf, and show that both Hm and Hf have gauge-independent expectation values. Any gauge may be chosen for the calculations; but

  8. Gauge-invariant expectation values of the energy of a molecule in an electromagnetic field

    Science.gov (United States)

    Mandal, Anirban; Hunt, Katharine L. C.

    2016-01-01

    In this paper, we show that the full Hamiltonian for a molecule in an electromagnetic field can be separated into a molecular Hamiltonian and a field Hamiltonian, both with gauge-invariant expectation values. The expectation value of the molecular Hamiltonian gives physically meaningful results for the energy of a molecule in a time-dependent applied field. In contrast, the usual partitioning of the full Hamiltonian into molecular and field terms introduces an arbitrary gauge-dependent potential into the molecular Hamiltonian and leaves a gauge-dependent form of the Hamiltonian for the field. With the usual partitioning of the Hamiltonian, this same problem of gauge dependence arises even in the absence of an applied field, as we show explicitly by considering a gauge transformation from zero applied field and zero external potentials to zero applied field, but non-zero external vector and scalar potentials. We resolve this problem and also remove the gauge dependence from the Hamiltonian for a molecule in a non-zero applied field and from the field Hamiltonian, by repartitioning the full Hamiltonian. It is possible to remove the gauge dependence because the interaction of the molecular charges with the gauge potential cancels identically with a gauge-dependent term in the usual form of the field Hamiltonian. We treat the electromagnetic field classically and treat the molecule quantum mechanically, but nonrelativistically. Our derivation starts from the Lagrangian for a set of charged particles and an electromagnetic field, with the particle coordinates, the vector potential, the scalar potential, and their time derivatives treated as the variables in the Lagrangian. We construct the full Hamiltonian using a Lagrange multiplier method originally suggested by Dirac, partition this Hamiltonian into a molecular term Hm and a field term Hf, and show that both Hm and Hf have gauge-independent expectation values. Any gauge may be chosen for the calculations; but

  9. Gauge-invariant expectation values of the energy of a molecule in an electromagnetic field

    Energy Technology Data Exchange (ETDEWEB)

    Mandal, Anirban; Hunt, Katharine L. C. [Department of Chemistry, Michigan State University, East Lansing, Michigan 48824 (United States)

    2016-01-28

    In this paper, we show that the full Hamiltonian for a molecule in an electromagnetic field can be separated into a molecular Hamiltonian and a field Hamiltonian, both with gauge-invariant expectation values. The expectation value of the molecular Hamiltonian gives physically meaningful results for the energy of a molecule in a time-dependent applied field. In contrast, the usual partitioning of the full Hamiltonian into molecular and field terms introduces an arbitrary gauge-dependent potential into the molecular Hamiltonian and leaves a gauge-dependent form of the Hamiltonian for the field. With the usual partitioning of the Hamiltonian, this same problem of gauge dependence arises even in the absence of an applied field, as we show explicitly by considering a gauge transformation from zero applied field and zero external potentials to zero applied field, but non-zero external vector and scalar potentials. We resolve this problem and also remove the gauge dependence from the Hamiltonian for a molecule in a non-zero applied field and from the field Hamiltonian, by repartitioning the full Hamiltonian. It is possible to remove the gauge dependence because the interaction of the molecular charges with the gauge potential cancels identically with a gauge-dependent term in the usual form of the field Hamiltonian. We treat the electromagnetic field classically and treat the molecule quantum mechanically, but nonrelativistically. Our derivation starts from the Lagrangian for a set of charged particles and an electromagnetic field, with the particle coordinates, the vector potential, the scalar potential, and their time derivatives treated as the variables in the Lagrangian. We construct the full Hamiltonian using a Lagrange multiplier method originally suggested by Dirac, partition this Hamiltonian into a molecular term H{sub m} and a field term H{sub f}, and show that both H{sub m} and H{sub f} have gauge-independent expectation values. Any gauge may be chosen for the

  10. Growth rate for the expected value of a generalized random Fibonacci sequence

    Energy Technology Data Exchange (ETDEWEB)

    Janvresse, Elise; De la Rue, Thierry [Laboratoire de Mathematiques Raphael Salem, Universite de Rouen, CNRS-Avenue de l' Universite, F76801 Saint Etienne du Rouvray (France); Rittaud, BenoIt [Laboratoire Analyse, Geometrie et Applications, Universite Paris 13 Institut Galilee, CNRS, 99 avenue Jean-Baptiste Clement, F93 430 Villetaneuse (France)], E-mail: Elise.Janvresse@univ-rouen.fr, E-mail: rittaud@math.univ-paris13.fr, E-mail: Thierry.de-la-Rue@univ-rouen.fr

    2009-02-27

    We study the behaviour of generalized random Fibonacci sequences defined by the relation g{sub n} = |{lambda}g{sub n-1} {+-} g{sub n-2}|, where the {+-} sign is given by tossing an unbalanced coin, giving probability p to the + sign. We prove that the expected value of g{sub n} grows exponentially fast for any 0 < p {<=} 1 when {lambda} {>=} 2, and for any p > (2 - {lambda})/4 when {lambda} is of the form 2cos({pi}/k) for some fixed integer k {>=} 3. In both cases, we give an algebraic expression for the growth rate.

  11. Racing Sampling Based Microimmune Optimization Approach Solving Constrained Expected Value Programming

    Directory of Open Access Journals (Sweden)

    Kai Yang

    2016-01-01

    Full Text Available This work investigates a bioinspired microimmune optimization algorithm to solve a general kind of single-objective nonlinear constrained expected value programming without any prior distribution. In the study of algorithm, two lower bound sample estimates of random variables are theoretically developed to estimate the empirical values of individuals. Two adaptive racing sampling schemes are designed to identify those competitive individuals in a given population, by which high-quality individuals can obtain large sampling size. An immune evolutionary mechanism, along with a local search approach, is constructed to evolve the current population. The comparative experiments have showed that the proposed algorithm can effectively solve higher-dimensional benchmark problems and is of potential for further applications.

  12. Expected net present value of pure and mixed sexed semen artificial insemination strategies in dairy heifers.

    Science.gov (United States)

    Olynk, N J; Wolf, C A

    2007-05-01

    Sexed semen has been a long-anticipated tool for dairy farmers to obtain more heifer calves, but challenges exist for integrating sexed semen into commercial dairy farm reproduction programs. The decreased conception rates (CR) experienced with sexed semen make virgin heifers better suited for insemination with sexed semen than lactating dairy cows. This research sought to identify when various sexed semen breeding strategies provided higher expected net present value (NPV) than conventional artificial insemination (AI) breeding schemes, indicating which breeding scheme is advisable under various scenarios. Budgets were developed to calculate the expected NPV of various AI breeding strategies incorporating conventional (non-sexed) and sexed semen. In the base budgets, heifer and bull calf values were held constant at $500 and $110, respectively. The percentage of heifers expected to be born after breeding with conventional and sexed semen used was 49.2 and 90%, respectively. Breeding costs per AI were held constant at $15.00 per AI for conventional semen and $45.00 per AI for sexed semen of approximately the same genetic value. Conventional semen CR of 58 and 65% were used, and an AI submission rate was set at 100%. Breeding strategies with sexed semen were assessed for breakeven heifer calf values and sexed semen costs to obtain a NPV equal to that achieved with conventional semen. Breakeven heifer calf values for pure sexed semen strategies with a constant 58 and 65% base CR in which sexed semen achieved 53% of the base CR are $732.11 and $664.26, respectively. Breakeven sexed semen costs per AI of $17.16 and $22.39, compared with $45.00 per AI, were obtained to obtain a NPV equal to that obtained with pure conventional semen for base CR of 58 and 65%, respectively. The strategy employing purely sexed semen, with base CR of both 58 and 65%, yielded a lower NPV than purely conventional semen in all but the best-case scenario in which sexed semen provides 90% of

  13. Unfolding spinor wave functions and expectation values of general operators: Introducing the unfolding-density operator

    Science.gov (United States)

    Medeiros, Paulo V. C.; Tsirkin, Stepan S.; Stafström, Sven; Björk, Jonas

    2015-01-01

    We show that the spectral weights Wm K ⃗(k ⃗) used for the unfolding of two-component spinor eigenstates | ψmK ⃗ SC>=|α >| ψmK ⃗ SC,α >+|β >| ψmK ⃗ SC,β > can be decomposed as the sum of the partial spectral weights WmK ⃗ μ(k ⃗) calculated for each component μ =α ,β independently, effortlessly turning a possibly complicated problem involving two coupled quantities into two independent problems of easy solution. Furthermore, we define the unfolding-density operator ρ̂K ⃗(k ⃗;ɛ ) , which unfolds the primitive cell expectation values φpc(k ⃗;ɛ ) of any arbitrary operator φ ̂ according to φpc(k ⃗;ɛ ) =Tr( ρ̂K ⃗(k ⃗;ɛ ) φ ̂) . As a proof of concept, we apply the method to obtain the unfolded band structures, as well as the expectation values of the Pauli spin matrices, for prototypical physical systems described by two-component spinor eigenfunctions.

  14. A Personal Value-Based Model of College Students' Aptitudes and Expected Choice Behavior Regarding Retailing Careers.

    Science.gov (United States)

    Shim, Soyeon; Warrington, Patti; Goldsberry, Ellen

    1999-01-01

    A study of 754 retail management students developed a value-based model of career attitude and expected choice behavior. Findings indicate that personal values had an influence on all aspects of retail career attitudes, which then had a direct effect on expected choice behavior. (Contains 55 references.) (Author/JOW)

  15. A Practical Measure of Student Motivation: Establishing Validity Evidence for the Expectancy-Value-Cost Scale in Middle School

    Science.gov (United States)

    Kosovich, Jeff J.; Hulleman, Chris S.; Barron, Kenneth E.; Getty, Steve

    2015-01-01

    We present validity evidence for the Expectancy-Value-Cost (EVC) Scale of student motivation. Using a brief, 10-item scale, we measured middle school students' expectancy, value, and cost for their math and science classes in the Fall and Winter of the same academic year. Confirmatory factor analyses supported the three-factor structure of the EVC…

  16. Funny money: the attentional role of monetary feedback detached from expected value.

    Science.gov (United States)

    Roper, Zachary J J; Vecera, Shaun P

    2016-10-01

    Stimuli associated with monetary reward can become powerful cues that effectively capture visual attention. We examined whether such value-driven attentional capture can be induced with monetary feedback in the absence of an expected cash payout. To this end, we implemented images of U.S. dollar bills as reward feedback. Participants knew in advance that they would not receive any money based on their performance. Our reward stimuli-$5 and $20 bill images-were thus dissociated from any practical utility. Strikingly, we observed a reliable attentional capture effect for the mere images of bills. Moreover, this finding generalized to Monopoly money. In two control experiments, we found no evidence in favor of nominal or symbolic monetary value. Hence, we claim that bill images are special monetary representations, such that there are strong associations between the defining visual features of bills and reward, probably due to a lifelong learning history. Together, we show that the motivation to earn cash plays a minor role when it comes to monetary rewards, while bill-defining visual features seem to be sufficient. These findings have the potential to influence human factor applications, such as gamification, and can be extended to novel value systems, such as the electronic cash Bitcoin being developed for use in mobile banking. Finally, our procedure represents a proof of concept on how images of money can be used to conserve expenditures in the experimental context.

  17. Calculation of Dipole Transition Matrix Elements and Expectation Values by Vibrational Coupled Cluster Method.

    Science.gov (United States)

    Banik, Subrata; Pal, Sourav; Prasad, M Durga

    2010-10-12

    An effective operator approach based on the coupled cluster method is described and applied to calculate vibrational expectation values and absolute transition matrix elements. Coupled cluster linear response theory (CCLRT) is used to calculate excited states. The convergence pattern of these properties with the rank of the excitation operator is studied. The method is applied to a water molecule. Arponen-type double similarity transformation in extended coupled cluster (ECCM) framework is also used to generate an effective operator, and the convergence pattern of these properties is compared to the normal coupled cluster (NCCM) approach. It is found that the coupled cluster method provides an accurate description of these quantities for low lying vibrational excited states. The ECCM provides a significant improvement for the calculation of the transition matrix elements.

  18. On the Expected Present Value of Total Dividends in a Risk Model with Potentially Delayed Claims

    Institute of Scientific and Technical Information of China (English)

    Xie Jie-hua; Zou Wei

    2013-01-01

    In this paper, we consider a risk model in which two types of individual claims, main claims and by-claims, are defined. Every by-claim is induced by the main claim randomly and may be delayed for one time period with a certain probability. The dividend policy that certain amount of dividends will be paid as long as the surplus is greater than a constant dividend barrier is also introduced into this delayed claims risk model. By means of the probability generating functions, formulae for the expected present value of total dividend payments prior to ruin are obtained for discrete-type individual claims. Explicit expressions for the corresponding results are derived for Kn claim amount distributions. Numerical illustrations are also given.

  19. Which uncertainty? Using expert elicitation and expected value of information to design an adaptive program

    Science.gov (United States)

    Runge, Michael C.; Converse, Sarah J.; Lyons, James E.

    2011-01-01

    Natural resource management is plagued with uncertainty of many kinds, but not all uncertainties are equally important to resolve. The promise of adaptive management is that learning in the short-term will improve management in the long-term; that promise is best kept if the focus of learning is on those uncertainties that most impede achievement of management objectives. In this context, an existing tool of decision analysis, the expected value of perfect information (EVPI), is particularly valuable in identifying the most important uncertainties. Expert elicitation can be used to develop preliminary predictions of management response under a series of hypotheses, as well as prior weights for those hypotheses, and the EVPI can be used to determine how much management could improve if uncertainty was resolved. These methods were applied to management of whooping cranes (Grus americana), an endangered migratory bird that is being reintroduced in several places in North America. The Eastern Migratory Population of whooping cranes had exhibited almost no successful reproduction through 2009. Several dozen hypotheses can be advanced to explain this failure, and many of them lead to very different management responses. An expert panel articulated the hypotheses, provided prior weights for them, developed potential management strategies, and made predictions about the response of the population to each strategy under each hypothesis. Multi-criteria decision analysis identified a preferred strategy in the face of uncertainty, and analysis of the expected value of information identified how informative each strategy could be. These results provide the foundation for design of an adaptive management program.

  20. From free energy to expected energy: Improving energy-based value function approximation in reinforcement learning.

    Science.gov (United States)

    Elfwing, Stefan; Uchibe, Eiji; Doya, Kenji

    2016-12-01

    Free-energy based reinforcement learning (FERL) was proposed for learning in high-dimensional state and action spaces. However, the FERL method does only really work well with binary, or close to binary, state input, where the number of active states is fewer than the number of non-active states. In the FERL method, the value function is approximated by the negative free energy of a restricted Boltzmann machine (RBM). In our earlier study, we demonstrated that the performance and the robustness of the FERL method can be improved by scaling the free energy by a constant that is related to the size of network. In this study, we propose that RBM function approximation can be further improved by approximating the value function by the negative expected energy (EERL), instead of the negative free energy, as well as being able to handle continuous state input. We validate our proposed method by demonstrating that EERL: (1) outperforms FERL, as well as standard neural network and linear function approximation, for three versions of a gridworld task with high-dimensional image state input; (2) achieves new state-of-the-art results in stochastic SZ-Tetris in both model-free and model-based learning settings; and (3) significantly outperforms FERL and standard neural network function approximation for a robot navigation task with raw and noisy RGB images as state input and a large number of actions.

  1. Comparing solutions to the expectancy-value muddle in the theory of planned behaviour.

    Science.gov (United States)

    O' Sullivan, B; McGee, H; Keegan, O

    2008-11-01

    The authors of the Theories of Reasoned Action (TRA) and Planned Behaviour (TPB) recommended a method for statistically analysing the relationship between the indirect belief-based measures and the direct measures of attitude, subjective norm, and perceived behavioural control (PBC). However, there is a growing awareness that this yields statistically uninterpretable results. This study's objective was to compare two solutions to what has been called the 'expectancy-value muddle'. These solutions were (i) optimal scoring of modal beliefs and (ii) individual beliefs without multiplicative composites. Cross-sectional data were collected by telephone interview. Participants were 110 first-degree relatives (FDRs) of patients diagnosed with colorectal cancer (CRC), who were offered CRC screening in the study hospital (83% response rate). Participants were asked to rate the TPB constructs in relation to attending for CRC screening. There was no significant difference in the correlation between behavioural beliefs and attitude for rescaled modal and individual beliefs. This was also the case for control beliefs and PBC. By contrast, there was a large correlation between rescaled modal normative beliefs and subjective norm, whereas individual normative beliefs did not correlate with subjective norm. Using individual beliefs without multiplicative composites allows for a fairly unproblematic interpretation of the relationship between the indirect and direct TPB constructs (French & Hankins, 2003). Therefore, it is recommended that future studies consider using individual measures of behavioural and control beliefs without multiplicative composites and examine a different way of measuring individual normative beliefs without multiplicative composites to that used in this study.

  2. Value and Expectations of Supervised Agricultural Experiences as Expressed by Agriculture Instructors in Oklahoma Who Were Alternatively Certified

    Science.gov (United States)

    Robinson, J. Shane; Haynes, J. Chris

    2011-01-01

    The purpose of this qualitative descriptive study was to determine the value and expectations for student participation in supervised agricultural experience (SAE) programs, as expressed by first-year, agricultural education teachers in Oklahoma who were alternatively certified. This study revealed that teachers in this study value the fact that…

  3. Using Expectancy Value Theory as a Framework to Reduce Student Resistance to Active Learning: A Proof of Concept.

    Science.gov (United States)

    Cooper, Katelyn M; Ashley, Michael; Brownell, Sara E

    2017-01-01

    There has been a national movement to transition college science courses from passive lectures to active learning environments. Active learning has been shown to be a more effective way for students to learn, yet there is concern that some students are resistant to active learning approaches. Although there is much discussion about student resistance to active learning, few studies have explored this topic. Furthermore, a limited number of studies have applied theoretical frameworks to student engagement in active learning. We propose using a theoretical lens of expectancy value theory to understand student resistance to active learning. In this study, we examined student perceptions of active learning after participating in 40 hours of active learning. We used the principal components of expectancy value theory to probe student experience in active learning: student perceived self-efficacy in active learning, value of active learning, and potential cost of participating in active learning. We found that students showed positive changes in the components of expectancy value theory and reported high levels of engagement in active learning, which provide proof of concept that expectancy value theory can be used to boost student perceptions of active learning and their engagement in active learning classrooms. From these findings, we have built a theoretical framework of expectancy value theory applied to active learning.

  4. Investigation of the Effects of Expectation Values for Radii on the Determination of Transition Probabilities using WBEPM Theory

    Indian Academy of Sciences (India)

    Gültekin Çelik; Şule Ateş

    2008-09-01

    Transition probabilities for some excited s–p and p–s transition arrays of neutral nitrogen have been calculated using the weakest bound electron potential model theory (WBEPMT) for the investigation of effects of expectation values of radii.We have used both numerical non-relativistic Hartree-Fock (NRHF) wave functions and numerical Coulomb approximation (NCA) wave functions to calculate expectation values of radii. The transition probability results obtained using the parameters determined with two different wave functions agree well with each other and accepted values taken from NIST for low values of transition probability. However, the NRHF wave functions present better results for p–s transitions, while NCA wave functions are better in s–p transitions for large values of transition probability.

  5. Impact of Expectancy-Value and Situational Interest Motivation Specificity on Physical Education Outcomes

    Science.gov (United States)

    Ding, Haiyong; Sun, Haichun; Chen, Ang

    2013-01-01

    To be successful in learning, students need to be motivated to engage and learn. The domain-specificity motivation theory articulates that student motivation is often determined by the content being taught to them. The purpose of this study was to extend the theory by determining domain-specificity of situational interest and expectancy-value…

  6. Expectation values of descendent fields in the Bullough-Dodd model and related perturbed conformal field theories

    Energy Technology Data Exchange (ETDEWEB)

    Baseilhac, P. E-mail: pb18@york.ac.uk; Stanishkov, M. E-mail: marian@mail.apctp.org

    2001-10-01

    The exact vacuum expectation values of the second level descendent fields <({partial_derivative}phi (cursive,open) Greek){sup 2}({partial_derivative}-bar{phi}{sup 2}e{sup a{phi}} in the Bullough-Dodd model are calculated. By performing quantum group restrictions, we obtain in the PHI{sub 12}, PHI{sub 21} and PHI{sub 15} perturbed minimal CFTs. In particular, the exact expectation value is found to be proportional to the square of the bulk free energy.

  7. Effects of Parental Expectations and Cultural-Values Orientation on Career Decision-Making Difficulties of Chinese University Students

    Science.gov (United States)

    Leung, S. Alvin; Hou, Zhi-Jin; Gati, Itamar; Li, Xixi

    2011-01-01

    This study examined the effects of cultural-values conflict and parental expectations on the career decision-making difficulties of university students in three cities in China (Beijing, Wuhan, and Hong Kong, N = 1342). The Multidimensional Scales of Individual Traditionality and Modernity (Yang, Yu, & Ye, 1989) were used as a measure of…

  8. Teaching Methods for Modelling Problems and Students' Task-Specific Enjoyment, Value, Interest and Self-Efficacy Expectations

    Science.gov (United States)

    Schukajlow, Stanislaw; Leiss, Dominik; Pekrun, Reinhard; Blum, Werner; Muller, Marcel; Messner, Rudolf

    2012-01-01

    In this study which was part of the DISUM-project, 224 ninth graders from 14 German classes from middle track schools (Realschule) were asked about their enjoyment, interest, value and self-efficacy expectations concerning three types of mathematical problems: intra-mathematical problems, word problems and modelling problems. Enjoyment, interest,…

  9. Using Expectancy-Value Theory to Explore Aspects of Motivation and Engagement in Inquiry-Based Learning in Primary Mathematics

    Science.gov (United States)

    Fielding-Wells, Jill; O'Brien, Mia; Makar, Katie

    2017-01-01

    Inquiry-based learning (IBL) is a pedagogical approach in which students address complex, ill-structured problems set in authentic contexts. While IBL is gaining ground in Australia as an instructional practice, there has been little research that considers implications for student motivation and engagement. Expectancy-value theory (Eccles and…

  10. Effects of Parental Expectations and Cultural-Values Orientation on Career Decision-Making Difficulties of Chinese University Students

    Science.gov (United States)

    Leung, S. Alvin; Hou, Zhi-Jin; Gati, Itamar; Li, Xixi

    2011-01-01

    This study examined the effects of cultural-values conflict and parental expectations on the career decision-making difficulties of university students in three cities in China (Beijing, Wuhan, and Hong Kong, N = 1342). The Multidimensional Scales of Individual Traditionality and Modernity (Yang, Yu, & Ye, 1989) were used as a measure of…

  11. Using the Expectancy Value Model of Motivation to Understand the Relationship between Student Attitudes and Achievement in Statistics

    Science.gov (United States)

    Hood, Michelle; Creed, Peter A.; Neumann, David L.

    2012-01-01

    We tested a model of the relationship between attitudes toward statistics and achievement based on Eccles' Expectancy Value Model (1983). Participants (n = 149; 83% female) were second-year Australian university students in a psychology statistics course (mean age = 23.36 years, SD = 7.94 years). We obtained demographic details, past performance,…

  12. The Use of an Expectancy-Value Model in Studying a University's Image. AIR Forum 1982 Paper.

    Science.gov (United States)

    Muffo, John A.; Whipple, Thomas W.

    The use of an expectancy-value model, common to consumer marketing studies, in analyzing the market position of Cleveland State University was investigated. Attention was focused on showing how consumer attitude concepts and methodologies can be used in developing a strategic marketing plan. Six populations were identified as groups important to…

  13. Directionality of the Associations of High School Expectancy-Value, Aspirations, and Attainment: A Longitudinal Study

    Science.gov (United States)

    Guo, Jiesi; Marsh, Herbert W.; Morin, Alexandre J. S.; Parker, Philip D.; Kaur, Gurvinder

    2015-01-01

    (This study examines the directionality of the associations among cognitive assets (IQ, academic achievement), motivational beliefs (academic self-concept, task values), and educational and occupational aspirations over time from late adolescence (Grade 10) into early adulthood (5 years post high school). Participants were from a nationally…

  14. On the interpretation of World Values Survey trust question - global expectations vs. local beliefs

    DEFF Research Database (Denmark)

    Banerjee, Ritwik

    How should we interpret the World Values Survey (WVS) trust question? We conduct an experiment in India - a low trust country, to correlate the WVS trust question with trust decisions in an incentivized Trust Game. Evidence supports findings from one strand of the fractured literature - the WVS t...

  15. On the expected value and distribution function of the first exit time for the Polya-Aeppli process

    Science.gov (United States)

    Cakmakyapan, Selen; Ozel, Gamze

    2013-10-01

    Pólya-Aeppli process is a particular case of classical compound Poisson process where the contribution of each term is distributed according to the geometric distribution and is used for describing clustered data since the Poisson process is insufficient for clustering of events. In this study, the distribution function and expected value of the first exit time are derived for Pólya-Aeppli process. Then, an application based on traffic accidents in Groningen are given and expected times obtained for some time-independent boundaries using R project.

  16. Optimization of the transmission of observable expectation values and observable statistics in Continuous Variable Teleportation

    CERN Document Server

    Farias, L Albano

    2010-01-01

    We analyze the statistics of observables in continuous variable quantum teleportation in the formalism of the characteristic function. We derive expressions for average values of output state observables in particular cumulants which are additive in terms of the input state and the resource of teleportation. Working with Squeezed Bell-like states, which may be optimized in a free parameter for better teleportation performance we discuss the relation between resources optimal for fidelity and for different observable averages. We obtain the values of the free parameter which optimize the central momenta and cumulants up to fourth order. For the cumulants the distortion between in and out states due to teleportation depends only on the resource. We obtain optimal parameters for the second and fourth order cumulants which do not depend on the squeezing of the resource. The second order central momenta which is equal to the second order cumulants and the photon number average are optimized by the same resource. W...

  17. Expectation values of single-particle operators in the random phase approximation ground state

    CERN Document Server

    Kosov, Daniel S

    2016-01-01

    We developed a method for computing matrix elements of single-particle operators in the correlated random phase approximation ground state. Working with the explicit random phase approximation ground state wavefunction, we derived practically useful and simple expression for a molecular property in terms of random phase approximation amplitudes. The theory is illustrated by the calculation of molecular dipole moments. It is shown that Hartree-Fock based random phase approximation provides a systematic improvement of molecular dipole moment values in comparison to M{\\o}ller-Plesset second order perturbation theory and coupled cluster method for a considered set of molecules.

  18. The decision to engage cognitive control is driven by expected reward-value: neural and behavioral evidence.

    Directory of Open Access Journals (Sweden)

    Matthew L Dixon

    Full Text Available Cognitive control is a fundamental skill reflecting the active use of task-rules to guide behavior and suppress inappropriate automatic responses. Prior work has traditionally used paradigms in which subjects are told when to engage cognitive control. Thus, surprisingly little is known about the factors that influence individuals' initial decision of whether or not to act in a reflective, rule-based manner. To examine this, we took three classic cognitive control tasks (Stroop, Wisconsin Card Sorting Task, Go/No-Go task and created novel 'free-choice' versions in which human subjects were free to select an automatic, pre-potent action, or an action requiring rule-based cognitive control, and earned varying amounts of money based on their choices. Our findings demonstrated that subjects' decision to engage cognitive control was driven by an explicit representation of monetary rewards expected to be obtained from rule-use. Subjects rarely engaged cognitive control when the expected outcome was of equal or lesser value as compared to the value of the automatic response, but frequently engaged cognitive control when it was expected to yield a larger monetary outcome. Additionally, we exploited fMRI-adaptation to show that the lateral prefrontal cortex (LPFC represents associations between rules and expected reward outcomes. Together, these findings suggest that individuals are more likely to act in a reflective, rule-based manner when they expect that it will result in a desired outcome. Thus, choosing to exert cognitive control is not simply a matter of reason and willpower, but rather, conforms to standard mechanisms of value-based decision making. Finally, in contrast to current models of LPFC function, our results suggest that the LPFC plays a direct role in representing motivational incentives.

  19. An algebraic function operator expectation value based eigenstate determinations for quantum systems with one degree of freedom

    Energy Technology Data Exchange (ETDEWEB)

    Kalay, Berfin; Demiralp, Metin [İstanbul Technical University, Informatics Institute, Maslak, 34469, İstanbul (Turkey)

    2015-12-31

    This proceedings paper aims to show the efficiency of an expectation value identity for a given algebraic function operator which is assumed to be depending pn only position operator. We show that this expectation value formula becomes enabled to determine the eigenstates of the quantum system Hamiltonian as long as it is autonomous and an appropriate basis set in position operator is used. This approach produces a denumerable infinite recursion which may be considered as revisited but at the same time generalized form of the recursions over the natural number powers of the position operator. The content of this short paper is devoted not only to the formulation of the new method but also to show that this novel approach is capable of catching the eigenvalues and eigenfunctions for Hydrogen-like systems, beyond that, it can give a hand to us to reveal the wavefunction structure. So it has also somehow a confirmative nature.

  20. EXPECTED PRESENT VALUE OF TOTAL DIVIDENDS IN THE COMPOUND BINOMIAL MODEL WITH DELAYED CLAIMS AND RANDOM INCOME

    Institute of Scientific and Technical Information of China (English)

    周杰明; 莫晓云; 欧辉; 杨向群

    2013-01-01

    In this paper, a compound binomial model with a constant dividend barrier and random income is considered. Two types of individual claims, main claims and by-claims, are defined, where every by-claim is induced by the main claim and may be delayed for one time period with a certain probability. The premium income is assumed to another binomial process to capture the uncertainty of the customer’s arrivals and payments. A system of difference equations with certain boundary conditions for the expected present value of total dividend payments prior to ruin is derived and solved. Explicit results are obtained when the claim sizes are Kn distributed or the claim size distributions have finite support. Numerical results are also provided to illustrate the impact of the delay of by-claims on the expected present value of dividends.

  1. Economic values and expected effect of selection index for pathogen-specific mastitis under Danish conditions

    DEFF Research Database (Denmark)

    Sørensen, L P; Mark, T; Sørensen, M K

    2010-01-01

    The objectives of this study were 1) to estimate costs related to 5 different pathogen-specific mastitis traits (susceptibility to different pathogens causing mastitis in dairy cattle) and unspecific mastitis, and 2) to compare selection differentials for an udder health index consisting of 5...... different pathogen-specific mastitis traits and lactation average somatic cell count from 5 to 170 d after first calving (LASCC170) with another index consisting of 1 unspecific mastitis trait and LASCC170. Economic values were estimated for mastitis caused by Staphylococcus aureus, Streptococcus...... dysgalactiae, Escherichia coli, coagulase-negative staphylococci, and Streptococcus uberis using a stochastic simulation model (SimHerd IV). Mastitis incidences for SimHerd IV were from incidences of mastitis treatments in primiparous Danish Holstein cows calving in 2007. Estimated costs ranged from €149...

  2. Reconciling the observed all-sky CMB flux with its expected value from an inhomogeneous Universe

    CERN Document Server

    Lieu, R

    2004-01-01

    In the expanding near Universe where $\\approx$ 50 % of the matter is clumped into galaxies and their halos, it was known from an earlier work that the angular magnification of a large CMB emission feature depends on the statistical balance between light beam convergence by clumps and divergence within the voids for the majority of the sightlines to the feature. The total flux, however, reflects this balance for {\\it all} sightlines to the feature, including those minority ones which are associated with galaxy strong lensing. Thus the brightness of the entire CMB sky is inevitably enhanced by at least a factor corresponding to the average strong lensing amplification for a random direction. The only way of reconciling this with the COBE/FIRAS measurement is to envisage a galaxy number density (or central mass) two orders of magnitude below the observed value. The evidence brought forth here represents another formidable inconsistency between the standard cosmological model and reality.

  3. Women's pursuit of personal goals in daily life with fibromyalgia: a value-expectancy analysis.

    Science.gov (United States)

    Affleck, G; Tennen, H; Zautra, A; Urrows, S; Abeles, M; Karoly, P

    2001-08-01

    Eighty-nine women with fibromyalgia completed the Life Orientation Test, identified health and social goals, and answered questions from the Goal Systems Assessment Battery (P. Karoly & L. Ruehlman, 1995) about their valuation of, and self-efficiency in attaining, each goal. For 30 days, they responded to palm-top computer interviews about their pain and fatigue and rated their goal effort, goal progress, and pain- and fatigue-related goal barriers. Goal barriers increased and goal efforts and progress decreased on days with greater pain and fatigue; goals valued more highly were pursued more effortfully and successfully; more optimistic individuals were less likely to perceive goal barriers and, on days that were more fatiguing than usual, were less likely to reduce their effort and to retreat from progress in achieving their health goal; and more pessimistic individuals perceived greater goal barriers on days that were less painful than usual.

  4. On the properties of the vacuum expectation value in $R_{\\xi }$ gauge and $\\overline{R_{\\xi }}$ gauge

    CERN Document Server

    Kim, Chungku

    2015-01-01

    We have investigated the gauge dependence of the vacuum expectation value(VEV) both in the $R_{\\xi }$ and the $\\overline{R_{\\xi }}$ gauge in the $\\overline{MS}$ scheme. We have found that, in case of the $R_{\\xi }$ gauge, the gauge dependence of the VEV should be modified due to the presence of the parameter in the gauge function that should be identified as a VEV in the broken symmetry phase. However the pole mass remains gauge independent.

  5. OPTIMAL REINSURANCE UNDER EXPECTED VALUE PRINCIPLE%期望值原理下的最优再保险

    Institute of Scientific and Technical Information of China (English)

    曹玉松; 张奕

    2006-01-01

    The paper concerns the problem how to purchase the reinsurance in order to make the insurer and the reinsurance company's total risk to be least under the expected value principle. When the insurer and reinsurance company take arbitrary risk measures, sufficient conditions for optimality of reinsurance contract are given within the restricted class of admissible contracts. Further, the explicit forms of optimal reinsurance contract under several special risk measures are given, and the method to decide parameters as well.

  6. Quantum expectation values of D-dimensional Rydberg hydrogenic states by use of Laguerre and Gegenbauer asymptotics

    Energy Technology Data Exchange (ETDEWEB)

    Aptekarev, A I [Keldysh Institute of Applied Mathematics, Russian Academy of Sciences and Moscow State University Lomonosov (Russian Federation); Dehesa, J S; Martinez-Finkelshtein, A; Yanez, R J [Instituto Carlos I de Fisica Teorica y Computacional, Universidad de Granada, 18071-Granada (Spain)], E-mail: aptekaa@keldysh.ru, E-mail: dehesa@ugr.es, E-mail: andrei@ual.es, E-mail: ryanez@ugr.es

    2010-04-09

    The radial position (, {alpha} element of R) and momentum ((p{sup {beta}}), {beta} in ( - 1, 3)) expectation values of the D-dimensional Rydberg hydrogenic states (i.e. states where the electron has a large hyperquantum number n) are rigorously determined by means of powerful tools of the modern approximation theory relative to the asymptotics of the varying orthogonal Laguerre and Gegenbauer polynomials which control the corresponding wavefunctions in position and momentum spaces.

  7. Using expectancy-value theory to explore aspects of motivation and engagement in inquiry-based learning in primary mathematics

    Science.gov (United States)

    Fielding-Wells, Jill; O'Brien, Mia; Makar, Katie

    2017-03-01

    Inquiry-based learning (IBL) is a pedagogical approach in which students address complex, ill-structured problems set in authentic contexts. While IBL is gaining ground in Australia as an instructional practice, there has been little research that considers implications for student motivation and engagement. Expectancy-value theory (Eccles and Wigfield 2002) provides a framework through which children's beliefs about their mathematical competency and their expectation of success are able to be examined and interpreted, alongside students' perceptions of task value. In this paper, Eccles and Wigfield's expectancy-value model has been adopted as a lens to examine a complete unit of mathematical inquiry as undertaken with a class of 9-10-year-old students. Data were sourced from a unit (˜10 lessons) based on geometry and geometrical reasoning. The units were videotaped in full, transcribed, and along with field notes and student work samples, subjected to theoretical coding using the dimensions of Eccles and Wigfield's model. The findings provide insight into aspects of IBL that may impact student motivation and engagement. The study is limited to a single unit; however, the results provide a depth of insight into IBL in practice while identifying features of IBL that may be instrumental in bringing about increased motivation and engagement of students in mathematics. Identifying potentially motivating aspects of IBL enable these to be integrated and more closely studied in IBL practises.

  8. Tinto's Theoretical Perspective and Expectancy-Value Paradigm: A confrontation to explain freshmen's academic achievement

    Directory of Open Access Journals (Sweden)

    Sandrine Neuville

    2007-05-01

    Full Text Available For decades, success in postsecondary education has preoccupied psychological and educational researchers. In this respect, Tinto's student integration model (1982, 1997 is one of the most frequently cited models. Tinto proposed that students' background characteristics, initial intentions and aspirations towards college influence their academic and social integration, which in turn affect their persistence. Unfortunately, although this model is an integrative one, it does not take motivational variables such as students' self-efficacy (Bandura, 1997; Bong & Skaalvik, 2003 and students' subjective value of academic tasks (Eccles & Wigfield, 2002; Neuville, 2004 into account although their impact on learning has been widely demonstrated (Robbins, Lauver, Le, Davis, & Langley, 2004. The purpose of this study, conducted with 2637 first-year university students from all the Bachelor's degree programs of a Belgian university, is to compare, through structural equation models, the explanatory power of these two research traditions (students' integration, on the one hand, and a motivational paradigm, on the other hand in predicting students' academic performance.

  9. Motivational processes from expectancy-value theory are associated with variability in the error positivity in young children.

    Science.gov (United States)

    Kim, Matthew H; Marulis, Loren M; Grammer, Jennie K; Morrison, Frederick J; Gehring, William J

    2017-03-01

    Motivational beliefs and values influence how children approach challenging activities. The current study explored motivational processes from an expectancy-value theory framework by studying children's mistakes and their responses to them by focusing on two event-related potential (ERP) components: the error-related negativity (ERN) and the error positivity (Pe). Motivation was assessed using a child-friendly challenge puzzle task and a brief interview measure prior to ERP testing. Data from 50 4- to 6-year-old children revealed that greater perceived competence beliefs were related to a larger Pe, whereas stronger intrinsic task value beliefs were associated with a smaller Pe. Motivation was unrelated to the ERN. Individual differences in early motivational processes may reflect electrophysiological activity related to conscious error awareness. Copyright © 2016 Elsevier Inc. All rights reserved.

  10. Benchmark Calculation of Radial Expectation Value \\varvec{< r^{-2} \\rangle } for Confined Hydrogen-Like Atoms and Isotropic Harmonic Oscillators

    Science.gov (United States)

    Yu, Rong Mei; Zan, Li Rong; Jiao, Li Guang; Ho, Yew Kam

    2017-09-01

    Spatially confined atoms have been extensively investigated to model atomic systems in extreme pressures. For the simplest hydrogen-like atoms and isotropic harmonic oscillators, numerous physical quantities have been established with very high accuracy. However, the expectation value of employed the basis expansion method with cut-off Slater-type orbitals to investigate these two confined systems. Accurate values for several low-lying bound states were obtained by carefully examining the convergence with respect to the size of basis. A scaling law for < rn \\rangle was derived and it is used to verify the accuracy of numerical results. Comparison with other calculations show that the present results establish benchmark values for this quantity, which may be useful in future studies.

  11. Negative symptoms and the failure to represent the expected reward value of actions: behavioral and computational modeling evidence.

    Science.gov (United States)

    Gold, James M; Waltz, James A; Matveeva, Tatyana M; Kasanova, Zuzana; Strauss, Gregory P; Herbener, Ellen S; Collins, Anne G E; Frank, Michael J

    2012-02-01

    Negative symptoms are a core feature of schizophrenia, but their pathogenesis remains unclear. Negative symptoms are defined by the absence of normal function. However, there must be a productive mechanism that leads to this absence. To test a reinforcement learning account suggesting that negative symptoms result from a failure in the representation of the expected value of rewards coupled with preserved loss-avoidance learning. Participants performed a probabilistic reinforcement learning paradigm involving stimulus pairs in which choices resulted in reward or in loss avoidance. Following training, participants indicated their valuation of the stimuli in a transfer test phase. Computational modeling was used to distinguish between alternative accounts of the data. A tertiary care research outpatient clinic. In total, 47 clinically stable patients with a diagnosis of schizophrenia or schizoaffective disorder and 28 healthy volunteers participated in the study. Patients were divided into a high-negative symptom group and a low-negative symptom group. The number of choices leading to reward or loss avoidance, as well as performance in the transfer test phase. Quantitative fits from 3 different models were examined. Patients in the high-negative symptom group demonstrated impaired learning from rewards but intact loss-avoidance learning and failed to distinguish rewarding stimuli from loss-avoiding stimuli in the transfer test phase. Model fits revealed that patients in the high-negative symptom group were better characterized by an "actor-critic" model, learning stimulus-response associations, whereas control subjects and patients in the low-negative symptom group incorporated expected value of their actions ("Q learning") into the selection process. Negative symptoms in schizophrenia are associated with a specific reinforcement learning abnormality: patients with high-negative symptoms do not represent the expected value of rewards when making decisions but learn

  12. The Effects of Sample Size on Expected Value, Variance and Fraser Efficiency for Nonparametric Independent Two Sample Tests

    Directory of Open Access Journals (Sweden)

    Ismet DOGAN

    2015-10-01

    Full Text Available Objective: Choosing the most efficient statistical test is one of the essential problems of statistics. Asymptotic relative efficiency is a notion which enables to implement in large samples the quantitative comparison of two different tests used for testing of the same statistical hypothesis. The notion of the asymptotic efficiency of tests is more complicated than that of asymptotic efficiency of estimates. This paper discusses the effect of sample size on expected values and variances of non-parametric tests for independent two samples and determines the most effective test for different sample sizes using Fraser efficiency value. Material and Methods: Since calculating the power value in comparison of the tests is not practical most of the time, using the asymptotic relative efficiency value is favorable. Asymptotic relative efficiency is an indispensable technique for comparing and ordering statistical test in large samples. It is especially useful in nonparametric statistics where there exist numerous heuristic tests such as the linear rank tests. In this study, the sample size is determined as 2 ≤ n ≤ 50. Results: In both balanced and unbalanced cases, it is found that, as the sample size increases expected values and variances of all the tests discussed in this paper increase as well. Additionally, considering the Fraser efficiency, Mann-Whitney U test is found as the most efficient test among the non-parametric tests that are used in comparison of independent two samples regardless of their sizes. Conclusion: According to Fraser efficiency, Mann-Whitney U test is found as the most efficient test.

  13. Net present value analysis to select public R&D programs and valuate expected private sector participation

    Energy Technology Data Exchange (ETDEWEB)

    Hinman, N.D.; Yancey, M.A. [National Renewable Energy Lab., Golden, CO (United States)

    1997-12-31

    One of the main functions of government is to invest taxpayers dollars in projects, programs, and properties that will result in social benefit. Public programs focused on the development of technology are examples of such opportunities. Selecting these programs requires the same investment analysis approaches that private companies and individuals use. Good use of investment analysis approaches to these programs will minimize our tax costs and maximize public benefit from tax dollars invested. This article describes the use of the net present value (NPV) analysis approach to select public R&D programs and valuate expected private sector participation in the programs. 5 refs.

  14. Expectation values of flavor-neutrino numbers with respect to neutrino-source hadron states --Neutrino oscillations and decay probabilities--

    CERN Document Server

    Fujii, Kanji

    2014-01-01

    On the basis of quantum field theory, we consider a unified description of various processes accompanied by neutrinos, namely weak decays and oscillation processes. The structures of the expectation values of flavor-neutrino numbers with respect to neutrino-source hadron state are investigated. Due to the smallness of neutrino masses, we naturally obtain the old (i.e. pre-mixing) formulas of decay probabilities. Together, it is shown that the oscillation formulas, similar to the usual ones, are applied irrespectively of the details of neutrino-producing processes. The derived oscillation formulas are the same in form as the usually used ones except for the oscillation length.

  15. Optimal pricing and inventory policies for non-instantaneous deteriorating items with permissible delay in payment: Fuzzy expected value model

    Directory of Open Access Journals (Sweden)

    Hardik N Soni

    2012-04-01

    Full Text Available This study investigates optimal pricing and inventory policies for non-instantaneous deteriorating items with permissible delay in payment. The demand rate is as known, continuous and differentiable function of price while holding cost rate, interest paid rate and interest earned rate are characterized as independent fuzzy variables rather than fuzzy numbers as in previous studies. Under these general assumptions, we first formulated a fuzzy expected value model (EVM and then some useful theoretical results have been derived to characterize the optimal solutions. An efficient algorithm is designed to determine the optimal pricing and inventory policy for the proposed model. The algorithmic procedure is demonstrated by means of numerical examples.

  16. Longterm Performance Trends Analysis and ManagingExpectation for Active Value1 (Case Study: PT Indocement Tunggal Prakarsa, Tbk

    Directory of Open Access Journals (Sweden)

    Perdana Wahyu Santosa

    2010-01-01

    Full Text Available This research used financial ratio and managing expectations for active value about performance of PT IndocementTunggal Prakarsa, Tbk (INTP as one of largest cement company with a strong brand image at Indonesia Stock Exchange (IDX. Unlike traditional corporate-performance metric, this study use growth value of matrix. INTP is well placed to meet Indonesia’s growing per capita of cement consumption. The financial data sources for this research are the audited annual reports of INTP2002-2008. The analysis focused on compounds annual growth rate (CAGR,  profitability, total assets turnover, cost of capital, market value added & market risk and market perception map. This research also used growth value matrix to analysis the market perception of INTP in 2008 that combined current performance with future growth opportunity. The result of market perception mapping for 2008-2009 shows that INTP was just on market average of current performance index but the future growth opportunity was above the market average level. The conclusion explains that INTP has very good long-term fundamental performance’s trend and the company is indicated has strong capabilityto be excellent value manager in the future.

  17. Expectation values of r sup q between Dirac and quasirelativistic wave functions in the quantum-defect approximation

    CERN Document Server

    Kwato-Njock, K

    2002-01-01

    A search is conducted for the determination of expectation values of r sup q between Dirac and quasirelativistic radial wave functions in the quantum-defect approximation. The phenomenological and supersymmetry-inspired quantum-defect models which have proven so far to yield accurate results are used. The recursive structure of formulae derived on the basis of the hypervirial theorem enables us to develop explicit relations for arbitrary values of q. Detailed numerical calculations concerning alkali-metal-like ions of the Li-, Na- and Cu-iso electronic sequences confirm the superiority of supersymmetry-based quantum-defect theory over quantum-defect orbital and exact orbital quantum number approximations. It is also shown that relativistic rather than quasirelativistic treatment may be used for consistent inclusion of relativistic effects.

  18. Disrupted expected value and prediction error signaling in youths with disruptive behavior disorders during a passive avoidance task.

    Science.gov (United States)

    White, Stuart F; Pope, Kayla; Sinclair, Stephen; Fowler, Katherine A; Brislin, Sarah J; Williams, W Craig; Pine, Daniel S; Blair, R James R

    2013-03-01

    Youths with disruptive behavior disorders, including conduct disorder and oppositional defiant disorder, show major impairments in reinforcement-based decision making. However, the neural basis of these difficulties remains poorly understood. This partly reflects previous failures to differentiate responses during decision making and feedback processing and to take advantage of computational model-based functional MRI (fMRI). Participants were 38 community youths ages 10-18 (20 had disruptive behavior disorders, and 18 were healthy comparison youths). Model-based fMRI was used to assess the computational processes involved in decision making and feedback processing in the ventromedial prefrontal cortex, insula, and caudate. Youths with disruptive behavior disorders showed reduced use of expected value information within the ventromedial prefrontal cortex when choosing to respond and within the anterior insula when choosing not to respond. In addition, they showed reduced responsiveness to positive prediction errors and increased responsiveness to negative prediction errors within the caudate during feedback. This study is the first to determine impairments in the use of expected value within the ventromedial prefrontal cortex and insula during choice and in prediction error-signaling within the caudate during feedback in youths with disruptive behavior disorders.

  19. Who took the "x" out of expectancy-value theory? A psychological mystery, a substantive-methodological synergy, and a cross-national generalization.

    Science.gov (United States)

    Nagengast, Benjamin; Marsh, Herbert W; Scalas, L Francesca; Xu, Man K; Hau, Kit-Tai; Trautwein, Ulrich

    2011-08-01

    Expectancy-value theory (EVT) is a dominant theory of human motivation. Historically, the Expectancy × Value interaction, in which motivation is high only if both expectancy and value are high, was central to EVT. However, the Expectancy × Value interaction mysteriously disappeared from published research more than 25 years ago. Using large representative samples of 15-year-olds (N = 398,750) from 57 diverse countries, we attempted to solve this mystery by testing Expectancy × Value interactions using latent-variable models with interactions. Expectancy (science self-concept), value (enjoyment of science), and the Expectancy × Value interaction all had statistically significant positive effects on both engagement in science activities and intentions of pursuing scientific careers; these results were similar for the total sample and for nearly all of the 57 countries considered separately. This study, apparently the strongest cross-national test of EVT ever undertaken, supports the generalizability of EVT predictions--including the "lost" Expectancy × Value interaction.

  20. Motivational Pathways to STEM Career Choices: Using Expectancy-Value Perspective to Understand Individual and Gender Differences in STEM Fields.

    Science.gov (United States)

    Wang, Ming-Te; Degol, Jessica

    2013-12-01

    The United States has made a significant effort and investment in STEM education, yet the size and the composition of the STEM workforce continues to fail to meet demand. It is thus important to understand the barriers and factors that influence individual educational and career choices. In this article, we conduct a literature review of the current knowledge surrounding individual and gender differences in STEM educational and career choices, using expectancy-value theory as a guiding framework. The overarching goal of this paper is to provide both a well-defined theoretical framework and complementary empirical evidence for linking specific sociocultural, contextual, biological, and psychological factors to individual and gender differences in STEM interests and choices. Knowledge gained through this review will eventually guide future research and interventions designed to enhance individual motivation and capacity to pursue STEM careers, particularly for females who are interested in STEM but may be constrained by misinformation or stereotypes.

  1. Are health journalists' practices tied to their perceptions of audience? An attribution and expectancy-value approach.

    Science.gov (United States)

    Hinnant, Amanda; Len-Ríos, María E; Oh, Hyun Jee

    2012-01-01

    This study examines a national survey of U.S. health journalists (N = 774) to ascertain how journalists' perceptions of audience use of health news shapes their journalistic practices. We establish a framework through attribution theory and expectancy-value theory for how journalists choose to fulfill their roles as providers of health information. Using these theoretical lenses, we look at whether health journalists' audience orientation is associated with their use of accessibility-oriented or credibility-focused practices. Our findings show that, overall, journalists believe readers are individually responsible for their health outcomes and that journalists focus on providing accessibility-oriented information when they feel their audience's ability to understand information may be compromised. Journalists' beliefs about audience behavior are associated with their attitudes toward communication practices.

  2. Purchasing Over-the-counter medicines from Australian pharmacy: What do the pharmacy customers value and expect?

    Science.gov (United States)

    Chan, Vincent; Tran, Hung

    2016-01-01

    Over-the-counter medicines (OTC) are widely available and can be purchased without a prescription. Their availability means that a customer may choose to purchase them without the involvement of a pharmacy/pharmacist. It is important to understand customer OTC purchasing perceptions and behaviour from a pharmacy to better understand the needs and opportunities in this space. This study aimed to examine customers' key expectations and what they value when purchasing OTC and how the effect of health status/stress and perceived risks/benefits of purchasing OTCs from a pharmacy may influence their OTC shopping behaviour. Customers from two metropolitan pharmacies across two different suburbs in Brisbane, Queensland, Australia completed a self-administered questionnaire. Data collection was conducted over a six-week period. The questionnaire examined demographics, current level of health and stress, as well as a range of questions (seven-point Likert-scale) examining perceived benefits and risks, what they value, trust and expect when purchasing OTC. A total of 86 customers from a broad range of demographics were captured in this study. When asked about their current health state, 41% and 23% respectively indicated that they were stressed and tense when they arrived at the pharmacy but many were feeling well (38%). Most customers strongly agreed/agreed that trust in the advice from a pharmacy (96%), trust in the products (73%), and the altruistic approach of a pharmacy (95%) were critical to them. Further, 82% and 78% respectively disagreed that time pressures or costs were concerns, despite many feeling tense and stressed when they came in. When asked where they intend to buy their future OTC, 89% indicated pharmacy instead of a supermarket. High levels of trust, confidence and sense of altruism and care were key factors for customers buying OTC from a pharmacy, regardless of time pressures, costs or existing levels of stress and health.

  3. Purchasing Over-the-counter medicines from Australian pharmacy: What do the pharmacy customers value and expect?

    Directory of Open Access Journals (Sweden)

    Chan V

    2016-09-01

    Full Text Available Background: Over-the-counter medicines (OTC are widely available and can be purchased without a prescription. Their availability means that a customer may choose to purchase them without the involvement of a pharmacy/pharmacist. It is important to understand customer OTC purchasing perceptions and behaviour from a pharmacy to better understand the needs and opportunities in this space. Objective: This study aimed to examine customers’ key expectations and what they value when purchasing OTC and how the effect of health status/stress and perceived risks/benefits of purchasing OTCs from a pharmacy may influence their OTC shopping behaviour. Methods: Customers from two metropolitan pharmacies across two different suburbs in Brisbane, Queensland, Australia completed a self-administered questionnaire. Data collection was conducted over a six-week period. The questionnaire examined demographics, current level of health and stress, as well as a range of questions (seven-point Likert-scale examining perceived benefits and risks, what they value, trust and expect when purchasing OTC. Results: A total of 86 customers from a broad range of demographics were captured in this study. When asked about their current health state, 41% and 23% respectively indicated that they were stressed and tense when they arrived at the pharmacy but many were feeling well (38%. Most customers strongly agreed/agreed that trust in the advice from a pharmacy (96%, trust in the products (73%, and the altruistic approach of a pharmacy (95% were critical to them. Further, 82% and 78% respectively disagreed that time pressures or costs were concerns, despite many feeling tense and stressed when they came in. When asked where they intend to buy their future OTC, 89% indicated pharmacy instead of a supermarket. Conclusions: High levels of trust, confidence and sense of altruism and care were key factors for customers buying OTC from a pharmacy, regardless of time pressures, costs or

  4. DARHUBER: A Computer Program for Effect Size Estimation in Linear Regression and for Calculating the Significance of Difference between Observed and Expected R2 Values

    OpenAIRE

    Hittner, James B.; N. Clayton Silver

    2016-01-01

    In linear multiple regression it is common practice to test whether the squared multiple correlation co efficient, R2, differs significantly from zero. Although frequently used, this test is misleading because the expected value of R2 is not zero under the null hypothesis that ρ, the population value of the multiple correlation coefficient, equals zero. The non-zero expected value of R2 has implications both for significance testing and effect size estimation involving the squared multipl...

  5. Charting the Eccles' expectancy-value model from mothers' beliefs in childhood to youths' activities in adolescence.

    Science.gov (United States)

    Simpkins, Sandra D; Fredricks, Jennifer A; Eccles, Jacquelynne S

    2012-07-01

    The Eccles' expectancy-value model posits that a cascade of mechanisms explain associations between parents' beliefs and youths' achievement-related behaviors. Specifically, parents' beliefs predict parents' behaviors; in turn, parents' behaviors predict youths' motivational beliefs, and youths' motivational beliefs predict their behaviors. This investigation focused on testing this model with mothers in sports, music, math, and reading over a 12-year period. Data were drawn from mother, youth, and teacher questionnaires collected as part of Childhood and Beyond Study (92% European American; N = 723). Mothers' beliefs in sports, music, and math positively predicted their behaviors in these areas 1 year later, which predicted youths' self-concepts of ability and values (i.e., their motivational beliefs) in these domains 1 year later. Adolescents' motivational beliefs predicted time spent in organized sport activities, playing music, and reading after school measured 4 years later as well as the number of math courses taken in high school. Furthermore, except in reading, mothers' behaviors mediated the relations between mothers' and youths' beliefs, and youths' beliefs mediated the relations between mothers' behaviors and youths' behaviors. Although there were mean-level differences in several indicators based on child gender, in most cases the relations among these indicators did not significantly vary by child gender. This study highlights the processes by which mothers' beliefs during their children's childhood can predict children's activities in adolescence.

  6. Expectation-maximization algorithms for learning a finite mixture of univariate survival time distributions from partially specified class values

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Youngrok [Iowa State Univ., Ames, IA (United States)

    2013-05-15

    Heterogeneity exists on a data set when samples from di erent classes are merged into the data set. Finite mixture models can be used to represent a survival time distribution on heterogeneous patient group by the proportions of each class and by the survival time distribution within each class as well. The heterogeneous data set cannot be explicitly decomposed to homogeneous subgroups unless all the samples are precisely labeled by their origin classes; such impossibility of decomposition is a barrier to overcome for estimating nite mixture models. The expectation-maximization (EM) algorithm has been used to obtain maximum likelihood estimates of nite mixture models by soft-decomposition of heterogeneous samples without labels for a subset or the entire set of data. In medical surveillance databases we can find partially labeled data, that is, while not completely unlabeled there is only imprecise information about class values. In this study we propose new EM algorithms that take advantages of using such partial labels, and thus incorporate more information than traditional EM algorithms. We particularly propose four variants of the EM algorithm named EM-OCML, EM-PCML, EM-HCML and EM-CPCML, each of which assumes a specific mechanism of missing class values. We conducted a simulation study on exponential survival trees with five classes and showed that the advantages of incorporating substantial amount of partially labeled data can be highly signi cant. We also showed model selection based on AIC values fairly works to select the best proposed algorithm on each specific data set. A case study on a real-world data set of gastric cancer provided by Surveillance, Epidemiology and End Results (SEER) program showed a superiority of EM-CPCML to not only the other proposed EM algorithms but also conventional supervised, unsupervised and semi-supervised learning algorithms.

  7. Inequalities of the electron density at the nucleus and radial expectation values of the ground state for the lithium isoelectronic sequence

    Institute of Scientific and Technical Information of China (English)

    陈超; 王治文

    2003-01-01

    The electron density at the nucleus,p(0),and the radtial expectation values,< rn >(-2 ≤ n ≤10),of the ground state for the lithium isoelectronic sequence are calculated with a full core plus correlation(FCPC) wavefunctions.By using these obtained expectation values,the accurate inequalities of the electron density at the nucleus and the radtial expectation values derived by Galvez and Porras for these systems are examined and verified.The final results show that FCPC wavefunctions used in this work can give satisfactory results in full configuration space.

  8. In-Office Application of Fluoride Gel or Varnish: Cost-Effectiveness and Expected Value of Perfect Information Analysis.

    Science.gov (United States)

    Schwendicke, Falk; Stolpe, Michael

    2017-01-01

    Application of fluoride gel/varnish (FG/FV) reduces caries increments but generates costs. Avoiding restorative treatments by preventing caries might compensate for these costs. We assessed the cost-effectiveness of dentists applying FG/FV in office and the expected value of perfect information (EVPI). EVPI analyses estimate the economic value of having perfect knowledge, assisting research resource allocation. A mixed public-private-payer perspective in Germany was adopted. A population of 12-year-olds was followed over their lifetime, with caries increments modelled using wide intervals to reflect the uncertainty of caries risk. Biannual application of FV/FG until age 18 years was compared to no fluoride application. Effectiveness parameters and their uncertainty were derived from systematic reviews. The health outcome was caries increment (decayed, missing, or filled teeth; DMFT). Cost calculations were based on fee catalogs or microcosting, including costs for individual-prophylactic fluoridation and, for FG, an individualized tray, plus material costs. Microsimulations, sensitivity, and EVPI analyses were performed. On average and applied to a largely low-risk population, no application of fluoride was least costly but also least effective (EUR 230; 11 DMFT). FV was more costly and effective (EUR 357; 7 DMFT). FG was less effective than FV and also more costly when using individualized trays. FV was the best choice for payers willing to invest EUR 39 or more per avoided DMFT. This cost-effectiveness will differ in different settings/countries or if FG/FV is applied by other care professionals. The EVPI was mainly driven by the individual's caries risk, as FV/FG were significantly more cost-effective in high-risk populations than in low-risk ones. Future studies should focus on caries risk prediction. © 2017 S. Karger AG, Basel.

  9. Optimality of Upper-Arm Reaching Trajectories Based on the Expected Value of the Metabolic Energy Cost.

    Science.gov (United States)

    Taniai, Yoshiaki; Nishii, Jun

    2015-08-01

    When we move our body to perform a movement task, our central nervous system selects a movement trajectory from an infinite number of possible trajectories under constraints that have been acquired through evolution and learning. Minimization of the energy cost has been suggested as a potential candidate for a constraint determining locomotor parameters, such as stride frequency and stride length; however, other constraints have been proposed for a human upper-arm reaching task. In this study, we examined whether the minimum metabolic energy cost model can also explain the characteristics of the upper-arm reaching trajectories. Our results show that the optimal trajectory that minimizes the expected value of energy cost under the effect of signal-dependent noise on motor commands expresses not only the characteristics of reaching movements of typical speed but also those of slower movements. These results suggest that minimization of the energy cost would be a basic constraint not only in locomotion but also in upper-arm reaching.

  10. Why Do Children Worry about Their Academic Achievement? An Expectancy-Value Perspective on Elementary Students' Worries about Their Mathematics and Reading Performance

    Science.gov (United States)

    Lauermann, Fani; Eccles, Jacquelynne S.; Pekrun, Reinhard

    2017-01-01

    Children's worrying about their academic performance has profound implications for their learning and wellbeing in school. Understanding the contextual and psychological antecedents of students' worry thus represents an important area of research. Drawing on Eccles and colleagues' expectancy-value theory and Pekrun's control-value theory and using…

  11. Math-related career aspirations and choices within Eccles et al.'s expectancy-value theory of achievement-related behaviors.

    Science.gov (United States)

    Lauermann, Fani; Tsai, Yi-Miau; Eccles, Jacquelynne S

    2017-08-01

    Which occupation to pursue is one of the more consequential decisions people make and represents a key developmental task. Yet the underlying developmental processes associated with either individual or group differences in occupational choices are still not well understood. This study contributes toward filling this gap, focusing in particular on the math domain. We examined two aspects of Eccles et al.'s (1983) expectancy-value theory of achievement-related behaviors: (a) the reciprocal associations between adolescents' expectancy and subjective task value beliefs and adolescents' career plans and (b) the multiplicative association between expectancies and values in predicting occupational outcomes in the math domain. Our analyses indicate that adolescents' expectancy and subjective task value beliefs about math and their math- or science-related career plans reported at the beginning and end of high school predict each other over time, with the exception of intrinsic interest in math. Furthermore, multiplicative associations between adolescents' expectancy and subjective task value beliefs about math predict math-related career attainment approximately 15 years after graduation from high school. Gender differences emerged regarding career-related beliefs and career attainment, with male students being more likely than female to both pursue and attain math-related careers. These gender differences could not be explained by differences in beliefs about math as an academic subject. (PsycINFO Database Record (c) 2017 APA, all rights reserved).

  12. The habenulo-raphe serotonergic circuit encodes an aversive expectation value essential for adaptive active avoidance of danger.

    Science.gov (United States)

    Amo, Ryunosuke; Fredes, Felipe; Kinoshita, Masae; Aoki, Ryo; Aizawa, Hidenori; Agetsuma, Masakazu; Aoki, Tazu; Shiraki, Toshiyuki; Kakinuma, Hisaya; Matsuda, Masaru; Yamazaki, Masako; Takahoko, Mikako; Tsuboi, Takashi; Higashijima, Shin-ichi; Miyasaka, Nobuhiko; Koide, Tetsuya; Yabuki, Yoichi; Yoshihara, Yoshihiro; Fukai, Tomoki; Okamoto, Hitoshi

    2014-12-03

    Anticipation of danger at first elicits panic in animals, but later it helps them to avoid the real threat adaptively. In zebrafish, as fish experience more and more danger, neurons in the ventral habenula (vHb) showed tonic increase in the activity to the presented cue and activated serotonergic neurons in the median raphe (MR). This neuronal activity could represent the expectation of a dangerous outcome and be used for comparison with a real outcome when the fish is learning how to escape from a dangerous to a safer environment. Indeed, inhibiting synaptic transmission from vHb to MR impaired adaptive avoidance learning, while panic behavior induced by classical fear conditioning remained intact. Furthermore, artificially triggering this negative outcome expectation signal by optogenetic stimulation of vHb neurons evoked place avoidance behavior. Thus, vHb-MR circuit is essential for representing the level of expected danger and behavioral programming to adaptively avoid potential hazard.

  13. Remark on Structure of Expectation Values of Flavor-Lepton Numbers with respect to Neutrino-Source Hadron States: Deviation from Fermi's Golden Relatio

    CERN Document Server

    Fujii, Kanji

    2016-01-01

    In our preceeding reports, we have pointed out that a unified description of weak decays accompanying neutrinos and the oscillation process is obtained on the basis of the expectation values of flavor-neutrino numbers with respect to the neutrino-source hadron state. In the present report, we investigate the effect on the expectation values due to the deviation from Fermi's golden relation, and give concrete features of these deviations in the case of $\\pi^+$ and $K^+$-decays under the simple situation with the $3$-momentum $\\vec{p_A}=0$ for $A=\\pi^+$, $K^+$. %numerical results under simple situations.

  14. Information Science Instruction and Changes in Girls' and Boy's Expectancy and Value Beliefs: In Search of Gender-Equitable Pedagogical Practices

    Science.gov (United States)

    Vekiri, Ioanna

    2013-01-01

    In this study, which was situated in the context of information science instruction, data were collected twice using student self-reports to examine the effects of pedagogical practices on changes in boys' and girls' expectancy and value beliefs about computing. Participants were 326 7th-grade students, enrolled in three middle schools that were…

  15. Expectancy-Value Models for the STEM Persistence Plans of Ninth-Grade, High-Ability Students: A Comparison between Black, Hispanic, and White Students

    Science.gov (United States)

    Andersen, Lori; Ward, Thomas J.

    2014-01-01

    Group differences in the effects of the expectancies and values that high-ability students have for science and mathematics on plans to persist in science, technology, engineering, and mathematics (STEM) were investigated. A nationally representative sample of ninth-grade students, the High School Longitudinal Study of 2009 (HSLS: 2009; n =…

  16. Great Expectations for "Great Expectations."

    Science.gov (United States)

    Ridley, Cheryl

    Designed to make the study of Dickens'"Great Expectations" an appealing and worthwhile experience, this paper presents a unit of study intended to help students gain (1) an appreciation of Dickens' skill at creating realistic human characters; (2) an insight into the problems of a young man confused by false values and unreal ambitions and ways to…

  17. Academic Procrastination in Linking Motivation and Achievement-Related Behaviours: A Perspective of Expectancy-Value Theory

    Science.gov (United States)

    Wu, Fan; Fan, Weihua

    2017-01-01

    The objective of the present study was to investigate the relationships among college students' achievement motivation (subjective task value and academic self-efficacy), academic procrastination (delay and missing deadlines) and achievement-related behaviours (effort and persistence). More specifically, the study investigated the mediating role…

  18. Algebraic function operator expectation value based quantum eigenstate determination: A case of twisted or bent Hamiltonian, or, a spatially univariate quantum system on a curved space

    Energy Technology Data Exchange (ETDEWEB)

    Baykara, N. A. [Marmara University, Faculty of Sciences and Letters, Mathematics Department, Göztepe Campus, 34730, Istanbul (Turkey)

    2015-12-31

    Recent studies on quantum evolutionary problems in Demiralp’s group have arrived at a stage where the construction of an expectation value formula for a given algebraic function operator depending on only position operator becomes possible. It has also been shown that this formula turns into an algebraic recursion amongst some finite number of consecutive elements in a set of expectation values of an appropriately chosen basis set over the natural number powers of the position operator as long as the function under consideration and the system Hamiltonian are both autonomous. This recursion corresponds to a denumerable infinite number of algebraic equations whose solutions can or can not be obtained analytically. This idea is not completely original. There are many recursive relations amongst the expectation values of the natural number powers of position operator. However, those recursions may not be always efficient to get the system energy values and especially the eigenstate wavefunctions. The present approach is somehow improved and generalized form of those expansions. We focus on this issue for a specific system where the Hamiltonian is defined on the coordinate of a curved space instead of the Cartesian one.

  19. Understanding the Relationship Between Parental Education and STEM Course Taking Through Identity-Based and Expectancy-Value Theories of Motivation

    Directory of Open Access Journals (Sweden)

    Ryan C. Svoboda

    2016-08-01

    Full Text Available High school students from lower–socioeconomic status (SES backgrounds are less likely to enroll in advanced mathematics and science courses compared to students from higher-SES backgrounds. The current longitudinal study draws on identity-based and expectancy-value theories of motivation to explain the SES and mathematics and science course-taking relationship. This was done by gathering reports from students and their parents about their expectations, values, and future identities for science, technology, engineering, and mathematics (STEM topics beginning in middle school through age 20. Results showed that parental education predicted mathematics and science course taking in high school and college, and this relationship was partially mediated by students’ and parents’ future identity and motivational beliefs concerning mathematics and science. These findings suggest that psychological interventions may be useful for reducing social class gaps in STEM course taking, which has critical implications for the types of opportunities and careers available to students.

  20. Understanding unemployed people's job search behaviour, unemployment experience and well-being: a comparison of expectancy-value theory and self-determination theory.

    Science.gov (United States)

    Vansteenkiste, Maarten; Lens, Willy; De Witte, Hans; Feather, N T

    2005-06-01

    Previous unemployment research has directly tested hypotheses derived from expectancy-value theory (EVT; Feather, 1982, 1990), but no comparative analysis has been executed with another motivational framework. In one large study with 446 unemployed people, separate analyses provided good evidence for predictions derived from both EVT and self-determination theory (SDT; Deci & Ryan, 1985, 2000). Comparative analyses indicated that the type of people's job search motivation, as conceptualized through the notions of autonomous versus controlled motivation within SDT, is an important predictor of people's unemployment experience and wellbeing, beyond people's strength of motivation assessed within EVT through expectancies of finding a job and employment value. The importance of simultaneously testing two theoretical frameworks is discussed.

  1. Greater decision-making competence is associated with greater expected-value sensitivity, but not overall risk taking: An examination of concurrent validity

    Directory of Open Access Journals (Sweden)

    Andrew M Parker

    2015-05-01

    Full Text Available Decision-making competence reflects individual differences in the susceptibility to decision-making errors, measured using tasks common from behavioral decision research (e.g., framing effects, under/overconfidence, following decision rules. Prior research demonstrates that those with higher decision-making competence report lower incidence of health-risking and antisocial behaviors, but there has been less focus on intermediate mechanisms that may impact real-world decisions, and, in particular, those implicated by normative models. Here we test the associations between measures of youth decision-making competence (Y-DMC and one such mechanism, the degree to which individuals make choices consistent with maximizing expected value (EV. Using a task involving hypothetical gambles, we find that greater EV sensitivity is associated with greater Y-DMC. Higher Y-DMC scores are associated with (a choosing risky options when expected value favors those options and (b avoiding risky options when expected value favors a certain option. This relationship is stronger for gambles that involved potential losses. The results suggest that Y-DMC captures decision processes consistent with standard normative evaluations of risky decisions.

  2. SU-E-T-56: A Novel Approach to Computing Expected Value and Variance of Point Dose From Non-Gated Radiotherapy Delivery

    Energy Technology Data Exchange (ETDEWEB)

    Zhou, S; Zhu, X; Zhang, M; Zheng, D; Zhang, Q; Lei, Y; Li, S; Driewer, J; Wang, S; Enke, C [University of Nebraska Medical Center, Omaha, NE (United States)

    2015-06-15

    Purpose: Randomness in patient internal organ motion phase at the beginning of non-gated radiotherapy delivery may introduce uncertainty to dose received by the patient. Concerns of this dose deviation from the planned one has motivated many researchers to study this phenomenon although unified theoretical framework for computing it is still missing. This study was conducted to develop such framework for analyzing the effect. Methods: Two reasonable assumptions were made: a) patient internal organ motion is stationary and periodic; b) no special arrangement is made to start a non -gated radiotherapy delivery at any specific phase of patient internal organ motion. A statistical ensemble was formed consisting of patient’s non-gated radiotherapy deliveries at all equally possible initial organ motion phases. To characterize the patient received dose, statistical ensemble average method is employed to derive formulae for two variables: expected value and variance of dose received by a patient internal point from a non-gated radiotherapy delivery. Fourier Series was utilized to facilitate our analysis. Results: According to our formulae, the two variables can be computed from non-gated radiotherapy generated dose rate time sequences at the point’s corresponding locations on fixed phase 3D CT images sampled evenly in time over one patient internal organ motion period. The expected value of point dose is simply the average of the doses to the point’s corresponding locations on the fixed phase CT images. The variance can be determined by time integration in terms of Fourier Series coefficients of the dose rate time sequences on the same fixed phase 3D CT images. Conclusion: Given a non-gated radiotherapy delivery plan and patient’s 4D CT study, our novel approach can predict the expected value and variance of patient radiation dose. We expect it to play a significant role in determining both quality and robustness of patient non-gated radiotherapy plan.

  3. Survey Expectations

    OpenAIRE

    Martin Weale

    2005-01-01

    This paper focusses on survey expectations and discusses their uses for testing and modeling of expectations. Alternative models of expectations formation are reviewed and the importance of allowing for heterogeneity of expectations is emphasized. A weak form of the rational expectations hypothesis which focusses on average expectations rather than individual expectations is advanced. Other models of expectations formation, such as the adaptive expectations hypothesis, are briefly discussed. ...

  4. Survey Expectations

    OpenAIRE

    Pesaran, M.H.; Weale, M.

    2005-01-01

    This paper focuses on survey expectations and discusses their uses for testing and modeling of expectations. Alternative models of expectations formation are reviewed and the importance of allowing for heterogeneity of expectations is emphasized. A weak form of the rational expectations hypothesis which focuses on average expectations rather than individual expectations is advanced. Other models of expectations formation, such as the adaptive expectations hypothesis, are briefly discussed. Te...

  5. Survey expectations

    OpenAIRE

    Pesaran, Mohammad Hashem; Weale, Martin R.

    2005-01-01

    This paper focuses on survey expectations and discusses their uses for testing and modeling of expectations. Alternative models of expectations formation are reviewed and the importance of allowing for heterogeneity of expectations is emphasized. A weak form of the rational expectations hypothesis which focuses on average expectations rather than individual expectations is advanced. Other models of expectations formation, such as the adaptive expectations hypothesis, are briefly discussed. Te...

  6. What Kind of Justice Today? Expectations Of ‘Good Justice’, Convergences And Divergences Between Managerial And Judicial Actors And How They Fit Within Management-Oriented Values

    Directory of Open Access Journals (Sweden)

    Yves Emery

    2014-06-01

    Full Text Available This research aims toward a better understanding of the organizational culture (s of the Judiciary in Switzerland by analysing what “good justice” means nowadays in this country. It seeks to clarify whether and to which extent the views of a “good justice” of judicial actors (judges without managerial experience and managerial actors (court managers are similar, and the possible managerial implications that may result from it. As judges are at the heart of the judicial organization and exert a strong influence on other groups of actors (Sullivan, Warren et al. 1994, the congruence of their expectations with those of court managers will be at the centre of the analysis. Additionally, referring to the conceptual worlds of Boltanski and Thévenot (1991, we analyse how close these expectations are to management-oriented values. We found that almost half of expectations are common to the two groups examined and the main quoted ones are well compatible to NPM precepts. On the other hand those expectations shared exclusively by judges relate to the human side of justice, whereas those specific to court managers focus on the way justice functions.

  7. Estimation of accuracies and expected genetic change from selection for selection indexes that use multiple-trait predictions of breeding values.

    Science.gov (United States)

    Barwick, S A; Tier, B; Swan, A A; Henzell, A L

    2013-10-01

    Procedures are described for estimating selection index accuracies for individual animals and expected genetic change from selection for the general case where indexes of EBVs predict an aggregate breeding objective of traits that may or may not have been measured. Index accuracies for the breeding objective are shown to take an important general form, being able to be expressed as the product of the accuracy of the index function of true breeding values and the accuracy with which that function predicts the breeding objective. When the accuracies of the individual EBVs of the index are known, prediction error variances (PEVs) and covariances (PECs) for the EBVs within animal are able to be well approximated, and index accuracies and expected genetic change from selection estimated with high accuracy. The procedures are suited to routine use in estimating index accuracies in genetic evaluation, and for providing important information, without additional modelling, on the directions in which a population will move under selection.

  8. Expectation value analysis of wave packet solutions for the quantum bouncer: Short-term classical and long-term revival behaviors

    Science.gov (United States)

    Doncheski, M. A.; Robinett, R. W.

    2001-10-01

    We discuss the time development of Gaussian wave packet solutions of the "quantum bouncer" (a quantum mechanical particle subject to a uniform downward force, above an impermeable flat surface). We focus on the evaluation and visualization of the expectation values and uncertainties of position and momentum variables during a single quasi-classical period as well as during the long-term collapsed phase and several revivals. This approach complements existing analytic and numerical analyses of this system, as well as being useful for comparison with similar results for the harmonic oscillator and infinite well cases.

  9. Expectation value analysis of wave packet solutions for the quantum bouncer: short-term classical and long-term revival behavior

    CERN Document Server

    Doncheski, M A

    2001-01-01

    We discuss the time development of Gaussian wave packet solutions of the quantum bouncer' (a quantum mechanical particle subject to a uniform downward force, above an impermeable flat surface). We focus on the evaluation and visualization of the expectation values and uncertainties of position and momentum variables during a single quasi-classical period as well as during the long term collapsed phase and several revivals. This approach complements existing analytic and numerical analyses of this system, as well as being useful for comparison with similar results for the harmonic oscillator and infinite well cases.

  10. Vacuum expectation values of the current density and energy-momentum tensor for a charged scalar field in curved spacetime with toroidally compactified spatial dimensions

    Science.gov (United States)

    Saharian, Aram; Kotanjyan, Anna; Sargsyan, Hayk; Simonyan, David

    2016-07-01

    The models with compact spatial dimensions appear in a number of fundamental physical theories. In particular, the idea of compactified dimensions has been extensively used in supergravity and superstring theories. In quantum field theory, the modification of the vacuum fluctuations spectrum by the periodicity conditions imposed on the field operator along compact dimensions leads to a number of interesting physical effects. A well known example of this kind, demonstrating the close relation between quantum phenomena and global geometry, is the topological Casimir effect. In models with extra compact dimensions, the Casimir energy creates a nontrivial potential for the compactification radius. This can serve as a stabilization mechanism for moduli fields and for the effective gauge couplings. The Casimir effect has also been considered as a possible origin for the dark energy in Kaluza-Klein-type and braneworld models. In the resent presentation we investigate the effects of the gravity and topology on the local properties of the quantum vacuum for a charged scalar field in the presence of a classical gauge field. Vacuum expectation value of the energy-momentum tensor and current density are investigated for a charged scalar field in dS spacetime with toroidally compact spatial dimensions in the presence of a classical constant gauge field. Due to the nontrivial topology, the latter gives rise to Aharonov-Bohm-like effect on the vacuum characteristics. The vacuum current density, energy density and stresses are even periodic functions of the magnetic flux enclosed by compact dimensions. For small values of the comoving lengths of compact dimensions, compared with the dS curvature radius, the effects of gravity on the topological contributions are small and the expectation values are expressed in terms of the corresponding quantities in the Minkowski bulk by the standard conformal relation. For large values of the comoving lengths, depending on the field mass, two

  11. Helium and deuterium abundances as a test for the time variation of the fine structure constant and the Higgs vacuum expectation value

    Energy Technology Data Exchange (ETDEWEB)

    Chamoun, N [Departamento de Fisica, Universidad Nacional de La Plata, cc67, 1900 La Plata (Argentina); Landau, S J [Facultad de Ciencias Astronomicas y Geofisicas, Universidad Nacional de La Plata, Paseo del Bosque, cp 1900 La Plata (Argentina); Mosquera, M E [Facultad de Ciencias Astronomicas y GeofIsicas, Universidad Nacional de La Plata, Paseo del Bosque, cp 1900 La Plata (Argentina); Vucetich, Hector [Departamento de Fisica, Universidad Nacional de La Plata, cc67, 1900 La Plata (Argentina)

    2007-02-15

    We use the semi-analytic method of Esmailzadeh et al (1991 Astrophys. J. 378 504-18) to calculate the abundances of helium and deuterium produced during Big Bang nucleosynthesis assuming the fine structure constant and the Higgs vacuum expectation value may vary in time. We analyse the dependence on the fundamental constants of the nucleon mass, nuclear binding energies and cross sections involved in the calculation of the abundances. Unlike previous works, we do not assume the chiral limit of QCD. Rather, we take into account the quark masses and consider the one-pion exchange potential, within perturbation theory, for the proton-neutron scattering. However, we do not consider the time variation of the strong interactions scale but attribute the changes in the quark masses to the temporal variation of the Higgs vacuum expectation value. Using the observational data of the helium and deuterium, we put constraints on the variation of the fundamental constants between the time of nucleosynthesis and the present time.

  12. Choices and Changes: Eccles’ Expectancy-Value Model and Upper-Secondary School Students’ Longitudinal Reflections about their Choice of a STEM Education

    DEFF Research Database (Denmark)

    Lykkegaard, Eva; Ulriksen, Lars

    2016-01-01

    During the past 30 years, Eccles’ comprehensive social-psychological Expectancy-Value Model of Motivated Behavioural Choices (EV-MBC model) has been proven suitable for studying educational choices related to Science, Technology, Engineering and/or Mathematics (STEM). The reflections of 15 students...... could be used to detect significant changes in the students’ educational choice processes. An important finding was that the quantitative EV-MBC surveys and the qualitative interviews gave quite different results concerning the students’ considerations about the choice of tertiary education......, and that significant changes in the students’ reflections were not captured by the factors of the EV-MBC model. This questions the validity of the EVMBC surveys. Moreover, the quantitative factors from the EV-MBC model did not sufficiently explain students’ dynamical educational choice processes where students...

  13. Choices and Changes: Eccles’ Expectancy-Value Model and Upper-Secondary School Students’ Longitudinal Reflections about their Choice of a STEM Education

    DEFF Research Database (Denmark)

    Lykkegaard, Eva; Ulriksen, Lars

    2016-01-01

    in their last year in upper-secondary school concerning their choice of tertiary education were examined using quantitative EV-MBC surveys and repeated qualitative interviews. This article presents the analyses of three cases in detail. The analytical focus was whether the factors indicated in the EV-MBC model......During the past 30 years, Eccles’ comprehensive social-psychological Expectancy-Value Model of Motivated Behavioural Choices (EV-MBC model) has been proven suitable for studying educational choices related to Science, Technology, Engineering and/or Mathematics (STEM). The reflections of 15 students...... could be used to detect significant changes in the students’ educational choice processes. An important finding was that the quantitative EV-MBC surveys and the qualitative interviews gave quite different results concerning the students’ considerations about the choice of tertiary education...

  14. Shareholders' Expectations, Enterprise Risk Management and Value of Audit%股东期望、全面风险管理与审计价值

    Institute of Scientific and Technical Information of China (English)

    王斌

    2009-01-01

    本文将从股东期望、经营者风险管理角度,来讨论分析审计价值及其实现路径.本文认为,股东希望通过积极主义直接干预公司运营、降低其收益风险的策略,在资本市场看来并不完全可行,作为一种可选策略,强化外部审计师的风险提示服务,既可满足股东风险控制期望,又能真正体现外部审计的社会价值;另一方面,经营者应基于信托理念,全面承担风险管理责任.为此需要重新审视内审部门的组织价值,通过规范内部审计的职责(流程导向的内部控制检查与财务审计、内部风险评估和关键风险因素揭示、风险管理报告),为经营者和股东提供价值增值服务.%This paper analyzes the value of audit and its achieving approaches from dimensions of shareholders' expectations and enterprise risk management (ERM). Shareholders wish to interfere the business operations in a direct way with the aim to control and digest investment risks. This strategy may not be economically infeasible judging from the market rule. As an alternative,as the paper demonstrates,enhancing CPA's risk-opinion providing service could partially meet shareholders' risk-controlling expectation,and inherently realizing social value of external audit. On the other side,based on the concept of entrusts between shareholders and management team,the management team should take risk-controlling accountabilities through ERM mechanisms under organizational hierarchy. Therefore it is necessary to review the organizational value of internal audit functions,and add value for management and shareholders through standardizing the internal auditing functions (workflow-oriented internal controls and financial accounting,internal risk assessment,KFRs and risk management reports).

  15. Evolutionary Expectations

    DEFF Research Database (Denmark)

    Nash, Ulrik William

    2014-01-01

    The concept of evolutionary expectations descends from cue learning psychology, synthesizing ideas on rational expectations with ideas on bounded rationality, to provide support for these ideas simultaneously. Evolutionary expectations are rational, but within cognitive bounds. Moreover......, they are correlated among people who share environments because these individuals satisfice within their cognitive bounds by using cues in order of validity, as opposed to using cues arbitrarily. Any difference in expectations thereby arise from differences in cognitive ability, because two individuals with identical...... expectations emphasizes not only that causal structure changes are common in social systems but also that causal structures in social systems, and expectations about them, develop together....

  16. Shattered expectations

    DEFF Research Database (Denmark)

    Hall, Elisabeth O C; Aagaard, Hanne; Larsen, Jette Schilling

    2008-01-01

    was conducted using Noblit and Hare’s methodological approach. Results: The metasynthesis shows that confidence in breastfeeding is shaped by shattered expectations and is affected on an immediate level by mothers’ expectations, the network and the breastfeeding experts and on a discourse level...... in breastfeeding and leads to shattered expectations....

  17. One-electron properties and electrostatic interaction energies from the expectation value expression and wave function of singles and doubles coupled cluster theory.

    Science.gov (United States)

    Korona, Tatiana; Jeziorski, Bogumil

    2006-11-14

    One-electron density matrices resulting from the explicitly connected commutator expansion of the expectation value were implemented at the singles and doubles coupled cluster (CCSD) level. In the proposed approach the one-electron density matrix is obtained at a little extra cost in comparison to the calculation of the CCSD correlation energy. Therefore, in terms of the computational time the new method is significantly less demanding than the conventional linear-response CCSD theory which requires additionally an expensive calculation of the left-hand solution of the CCSD equations. The quality of the new density matrices was investigated by computing a set of one-electron properties for a series of molecules of varying sizes and comparing the results with data obtained using the full configuration interaction method or higher level coupled cluster theory. It has been found that the results obtained using the new approach are of the same quality as those predicted by the linear-response CCSD method. The novel one-electron density matrices have also been applied to study the energy of the electrostatic interaction for a number of van der Waals complexes, including the benzene and azulene dimers.

  18. Comparing oncology clinical programs by use of innovative designs and expected net present value optimization: Which adaptive approach leads to the best result?

    Science.gov (United States)

    Parke, Tom; Marchenko, Olga; Anisimov, Vladimir; Ivanova, Anastasia; Jennison, Christopher; Perevozskaya, Inna; Song, Guochen

    2017-01-01

    Designing an oncology clinical program is more challenging than designing a single study. The standard approaches have been proven to be not very successful during the last decade; the failure rate of Phase 2 and Phase 3 trials in oncology remains high. Improving a development strategy by applying innovative statistical methods is one of the major objectives of a drug development process. The oncology sub-team on Adaptive Program under the Drug Information Association Adaptive Design Scientific Working Group (DIA ADSWG) evaluated hypothetical oncology programs with two competing treatments and published the work in the Therapeutic Innovation and Regulatory Science journal in January 2014. Five oncology development programs based on different Phase 2 designs, including adaptive designs and a standard two parallel arm Phase 3 design were simulated and compared in terms of the probability of clinical program success and expected net present value (eNPV). In this article, we consider eight Phase2/Phase3 development programs based on selected combinations of five Phase 2 study designs and three Phase 3 study designs. We again used the probability of program success and eNPV to compare simulated programs. For the development strategies, we considered that the eNPV showed robust improvement for each successive strategy, with the highest being for a three-arm response adaptive randomization design in Phase 2 and a group sequential design with 5 analyses in Phase 3.

  19. Choices and changes: Eccles' Expectancy-Value model and upper-secondary school students' longitudinal reflections about their choice of a STEM education

    Science.gov (United States)

    Lykkegaard, Eva; Ulriksen, Lars

    2016-03-01

    During the past 30 years, Eccles' comprehensive social-psychological Expectancy-Value Model of Motivated Behavioural Choices (EV-MBC model) has been proven suitable for studying educational choices related to Science, Technology, Engineering and/or Mathematics (STEM). The reflections of 15 students in their last year in upper-secondary school concerning their choice of tertiary education were examined using quantitative EV-MBC surveys and repeated qualitative interviews. This article presents the analyses of three cases in detail. The analytical focus was whether the factors indicated in the EV-MBC model could be used to detect significant changes in the students' educational choice processes. An important finding was that the quantitative EV-MBC surveys and the qualitative interviews gave quite different results concerning the students' considerations about the choice of tertiary education, and that significant changes in the students' reflections were not captured by the factors of the EV-MBC model. This questions the validity of the EV-MBC surveys. Moreover, the quantitative factors from the EV-MBC model did not sufficiently explain students' dynamical educational choice processes where students in parallel considered several different potential educational trajectories. We therefore call for further studies of the EV-MBC model's use in describing longitudinal choice processes and especially in investigating significant changes.

  20. Evolutionary Expectations

    DEFF Research Database (Denmark)

    Nash, Ulrik William

    2014-01-01

    The concept of evolutionary expectations descends from cue learning psychology, synthesizing ideas on rational expectations with ideas on bounded rationality, to provide support for these ideas simultaneously. Evolutionary expectations are rational, but within cognitive bounds. Moreover...... cognitive bounds will perceive business opportunities identically. In addition, because cues provide information about latent causal structures of the environment, changes in causality must be accompanied by changes in cognitive representations if adaptation is to be maintained. The concept of evolutionary...

  1. Unequal Expectations

    DEFF Research Database (Denmark)

    Karlson, Kristian Bernt

    outlines how the expectation-based explanation of IEO complements explanations stressing family resources as an important cause of IEO; it carefully defines "expectation," the core concept underlying the dissertation; it places the methodological contributions of the dissertation in the debate over...

  2. Prognostic value of the six-minute walk test in end-stage renal disease life expectancy: a prospective cohort study

    Directory of Open Access Journals (Sweden)

    Leandro de Moraes Kohl

    2012-01-01

    Full Text Available OBJECTIVES: The six-minute walk test has been widely used to evaluate functional capacity and predict mortality in several populations. Thus, the aim of this study was to evaluate the prognostic value of the six-minute walk test for the life expectancy of end-stage renal disease patients. METHODS: Patients over 18 years old who underwent hemodialysis for at least six months were included. Patients with hemodynamic instability, smoking, chronic obstructive pulmonary disease, physical incapacity and acute myocardial stroke in the preceding three months were excluded. RESULTS: Fifty-two patients (54% males; 36+11 years old were followed for 144 months. The distance walked in the six-minute walk test was a survival predictor for end-stage renal disease patients. In the multivariate analysis, for each 100 meters walked with a 100-meter increment, the hazard ratio was 0.53, with a 95% confidence interval of 0.37-0.74. There was a positive correlation between the distance walked in the six-minute walk test and peak oxygen consumption (r = 0.508. In the multivariate analysis, each year of dialysis treatment represented a 10% increase in death probability; in the severity index analysis, each point on the scale represented an 11% increase in the death risk. CONCLUSIONS: We observed that survival increased approximately 5% for every 100 meters walked in the six-minute walk test, demonstrating that the test is a viable option for evaluating the functional capacity in patients with end-stage renal disease.

  3. Short-term quetiapine treatment alters the use of reinforcement signals during risky decision-making and promotes the choice of negative expected values in healthy adult males.

    Science.gov (United States)

    Rock, Philippa L; Harmer, Catherine J; McTavish, Sarah F B; Goodwin, Guy M; Rogers, Robert D

    2013-09-25

    Effective decision-making can involve using environmental signals about the possible good and bad outcomes, and their probabilities, to select optimal actions. Problematic decision-making in psychiatric disorders, and particularly bipolar illness, may result from disrupted use of these reinforcement cues, leading to actions that reflect or precipitate pathological changes in mood. Previous experiments indicate that the processing of reinforcement cues while selecting between risky actions can be influenced by dopamine and serotonin activity. Quetiapine is an atypical antipsychotic agent with a complex pharmacology, including antagonist actions at 5-HT2A and, to a lesser extent, D2 receptors. Here, we investigated the effects of (short-term) treatment with quetiapine on the risky decision-making of healthy human adults. Twenty participants received 150 mg of quetiapine XL for 7 d, whereas 20 age- and IQ-matched participants received a placebo. On the eighth day, all participants completed a risky decision-making task that involved making a series of choices between two simultaneously presented gambles that differed in the magnitudes of their possible gains and losses, and the probabilities with which these outcomes were delivered. Quetiapine treatment was associated with a marked tendency to choose options with negative expected values compared with placebo treatment in male but not female participants. Our results demonstrate that antagonism of serotonin and dopamine receptor activity can alter the way individuals use information about gains and losses when selecting between risky actions, possibly reflecting gender-specific differences in risk attitudes. These effects may be beneficial by correcting decision-making biases that feature in mood disorders.

  4. Unequal Expectations

    DEFF Research Database (Denmark)

    Karlson, Kristian Bernt

    of the relation between the self and educational prospects; evaluations that are socially bounded in that students take their family's social position into consideration when forming their educational expectations. One important consequence of this learning process is that equally talented students tend to make...... different educational choices according to their family background. IEO thus appears to be mediated by the expectations students hold for their futures. Taken together, this research agenda argues that both researchers and policy-makers need to consider the expectation-based origin of educational...... inequalities if educational reform is to promote educational and social mobility in post-industrial society. I pursue my research agenda in five chapters. In the introductory Chapter I I situate my research contributions in the tradition of the sociology of educational stratification. This chapter also...

  5. When Can Subscores Be Expected to Have Added Value? Results from Operational and Simulated Data. Research Report. ETS RR-10-16

    Science.gov (United States)

    Sinharay, Sandip

    2010-01-01

    Recently, there has been an increasing level of interest in subscores for their potential diagnostic value. Haberman (2008) suggested a method based on classical test theory to determine whether subscores have added value over total scores. This paper provides a literature review and reports when subscores were found to have added value for…

  6. Great Expectations

    NARCIS (Netherlands)

    Dickens, Charles

    2005-01-01

    One of Dickens's most renowned and enjoyable novels, Great Expectations tells the story of Pip, an orphan boy who wishes to transcend his humble origins and finds himself unexpectedly given the opportunity to live a life of wealth and respectability. Over the course of the tale, in which Pip

  7. Great Expectations

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    The past year marks robust economic growth for Latin America and rapid development in cooperation with China. The future in this partnership looks bright Latin America's economy is expected to grow by 4.3 percent in 2005, according to the projection of the Economic Commission for Latin America and the Caribbean. This fig-

  8. Teacher Expectations.

    Science.gov (United States)

    Larkin, Maureen McCormack

    This report examines the background and implementation of the Milwaukee (Wisconsin) Teacher Expectation Project and the Milwaukee School Improvement Program (Project RISE). The author presents a brief overview of educational research on low achievement, which includes the cultural deficit theory, the latter upon which the projects were based.…

  9. Great Expectations

    NARCIS (Netherlands)

    Dickens, Charles

    2005-01-01

    One of Dickens's most renowned and enjoyable novels, Great Expectations tells the story of Pip, an orphan boy who wishes to transcend his humble origins and finds himself unexpectedly given the opportunity to live a life of wealth and respectability. Over the course of the tale, in which Pip encount

  10. Bounds on the ratio of Higgs vacuum expectation values in the minimal supersymmetric standard model from the top and bottom quark masses

    CERN Document Server

    Bednyakov, V A; Kovalenko, S G

    1994-01-01

    The top quark mass values from the CDF Collaboration and the precision electroweak data at LEP combined with the bottom mass value allow to establish bounds on the parameter tan beta in the minimal supersymmetric standard model (MSSM) independent of the soft supersymmetry breaking parameters. We find: 0.96 1, where radiative electroweak symmetry breaking is possible. Assuming electroweak symmetry breaking leads to: tan beta=1.2 +- 0.2, if one neglects the high tan beta solution, which is unlikely due to proton lifetime limits.

  11. Expected Value of Finite Fission Chain Lengths of Pulse Reactors%脉冲堆有限裂变链长的数学期望值分析

    Institute of Scientific and Technical Information of China (English)

    刘建军; 邹志高; 张本爱

    2007-01-01

    讨论了在一个增殖系统引发一个持续裂变链所需要的平均中子数.在点堆模型基础上,考虑了在t0时刻系统引入一个源中子,在t时刻产生n个中子的概率ν(n,t0,t),推导了概率生成函数G(z;t0,t)所满足的偏微分方程,并得到了近似解.用近似解计算了Godiva-Ⅱ脉冲堆的有限裂变链长数学期望值,有限裂变链期望值反比于脉冲堆的反应性.%The average neutron population necessary for sponsoring a persistent fission chain in a multiplying system, is discussed. In the point reactor model, the probability functionν(n,t0,t) of a source neutron at time t0 leading to n neutrons at time t is dealt with. The non-linear partial differential equation for the probability generating function G(z;t0,t) is derived. By solving the equation, we have obtained an approximate analytic solution for a slightly prompt supercritical system. For the pulse reactor Godiva-Ⅱ, the mean value of finite fission chain lengths is estimated in this work and shows that the estimated value is reasonable for the experimental analysis.

  12. Expected value of sampling information for linear decision problem on two actions under (Pareto-U)model%(Pareto-U)模型下二行动线性决策问题的EVSI

    Institute of Scientific and Technical Information of China (English)

    杨艳秋; 宋立新

    2011-01-01

    讨论了均匀分布U(0,θ)共轭于Pareto分布模型下的二行动线性决策问题的抽样信息期望值(EVSI)的计算公式.%This study discusses the expected value of sampling information(EVSI) of the linear decision-making problem on two actions about the model of Pareto distribution conjugate in uniformly distribution (Pareto-U) model.

  13. 护理本科生工作期望值与实际满意度差异的研究%The study of working expectation values and actual satisfaction degree in nursing college graduates

    Institute of Scientific and Technical Information of China (English)

    樊爱玲; 王雪花; 黄志洁; 王景丽; 陈萍; 赵艳华

    2008-01-01

    Objective To discuss the variance of working expectation values and actual satisfaction degree in nursing college graduates from various aspects and evaluate their actual career mentality.Methods We investigated the working expectation values and actual satisfaction degree in nursing college graduates who graduated from Chengde medical college in 2004 and 2005.Results The working expectation values and actual satisfaction degree had statistical difference in 5 aspects(P<0.05).We subsequently compared the expectation values between each two groups and drew out the conclusion that these nursing graduates had great requirement of being understood and respected.Conclusion The nursing graduates had higher working expectation values and lower satisfaction degree.They paid more attention to be understood and respected and were in great need of emotional support and mental satisfaction.Hospital administrators should help them accurately orient theirselves,establish career development plan,attach importanee to their mental requirement and adopt effective measures to improve their satisfaction degree and promote the healthy growth of nursing college graduates.%目的 从多方面探讨护理本科生对工作期望值与实际满意度之间的差异度,以评价护理本科生真实的从业心态.方法 对承德医学院2004-2005年毕业并参加医院工作的护理本科生进行期望值与满意度调查,并对结果进行分析.结果护理本科生在5个方面的期望值与满意度比较差异有统计学意义(P<0.05).对各项的期望值进行两两比较,护理本科生对理解与尊重的需求突出.结论 本科生工作期望值较高,而满意度较低.他们更注重被理解与尊重、有所成就以及情感的认同和精神上的满足感.医院管理者应帮助他们准确定位,制订实际的职业发展规划,重视他们的心理需求,采取针对性措施有效提高其满意度,促进护理本科生的健康成长.

  14. Psychology students' career expectations

    Directory of Open Access Journals (Sweden)

    Eva Boštjančič

    2011-04-01

    Full Text Available Developing career expectations is a process through which young people get to know their own characteristics, skills, and values, assess their opportunities on the labor market, and develop various career plans and goals for themselves. In this study, 190 students completed the "Career Planning" questionnaire, which is composed of a series of open-response questions. The results showed that students have very little work experiences connected with psychology and more in administration, working with children, and volunteer work. They tend to evaluate their skills as high. Their career expectations are distributed by employment area, in which they draw attention to various obstacles in achieving their set goals, especially with regard to personality factors and financing. They primarily expect good interpersonal relations and working conditions from their future workplaces.

  15. Choquet expectation and Peng's g-expectation

    OpenAIRE

    Chen, Zengjing; Tao CHEN; Davison, Matt

    2005-01-01

    In this paper we consider two ways to generalize the mathematical expectation of a random variable, the Choquet expectation and Peng’s g-expectation. An open question has been, after making suitable restrictions to the class of random variables acted on by the Choquet expectation, for what class of expectation do these two definitions coincide? In this paper we provide a necessary and sufficient condition which proves that the only expectation which lies in both classes is the traditional lin...

  16. 跳扩散风险过程的最优投资和比例再保险:期望值保费原理%Optimal Investment and Proportional Reinsurance for Jump-Diffusion Risk Processes: Expected Value Principle

    Institute of Scientific and Technical Information of China (English)

    梁志彬

    2009-01-01

    站在保险人的立场上,讨论了期望值保费原理下,跳扩散风险过程的最优投资和比例再保险问题,得到了使终值期望效用达到最大的最优策略和值函数的近似表达式,并且得出结论:投资总比不投资好.最后,通过一些数值举例来进一步说明本文中所得的结论.%In this paper,we study.from the insurer's point of view,the optinull investment and proportional reinsurance for the imp-diffusion surplUS processes.Assuming that the reinsurance premium is calculated according to the expected value principle,we obtain the closed form expressions of the strategy and the value function which are optimal in the sense of maximizing the expected utility from terminal wealth.We also conclude that the case with investment is always better than the one without investment.Some numerical examples 8,re given,which illustrate the results of this paper.

  17. Expectation values of dental esthetics for adolescents with malocclusion: a prospective study%青少年错颌畸形患者牙齿美观期待的前瞻性研究

    Institute of Scientific and Technical Information of China (English)

    付素伟; 郭宇红; 曾庆磊

    2013-01-01

    Objective To investigate the expectation values of dental esthetics during the orthodontic treatment in adolescents with malocclusion.Methods 14~18 year-old adolescents with malocclusion were randomly divided into the treatment group (30 cases) and the control group (21 group) for a prospective study with a period of 1.5 years (0,0.5,1.0,1.5 year respectively),esthetics components of index of orthodontic treatment need (IOTN-AC) and self-made sheet for expectation values of dental esthetics were used to evaluate the values during the follow-up.Results During the follow-up,the IOTN-AC values in the treatment group were decreasing,conversely,the values in the control group were increasing,the expectation values of dental esthetics were increasing in both of the two groups,the differences above were significantly.Conclusions Expectation values of dental esthetics were higher during the follow-up in both of the treatment and untreatment cases,so the dentists and the nurses should encourage the consolidation therapy in treatment cases,and persuade the untreatment cases for orthodontic therapy in order to improve their psychological needs.%目的 探讨青少年错颌畸形患者在正畸治疗过程中牙齿美观主观感受和牙齿美观期待的动态变化.方法 随机选择30例14~18周岁错颌畸形治疗患者作为治疗组进行长达1.5年的前瞻性随访研究,采用正畸治疗需要指数的美观量表(IOTN-AC)调查患者对自我错颌畸形的评价,用自制的牙齿美观期待量表进行期待值评估;随机选择该年龄段错颌畸形未治疗者21例作为对照组进行随访;随访时间点均为治疗开始前、治疗开始后0.5,1.0,1.5年.结果 随着随访时间的延长,治疗组患者IOTN-AC分值逐渐降低,对照组患者IOTN-AC分值逐渐升高;治疗组和对照组患者牙齿美观期待值均呈现逐渐升高的趋势;2组比较差异显著.结论 针对青少年错颌畸形患者,对于治疗者,在治疗

  18. An Investigation of the Effects of Customer’s Expectations and Perceived Quality on Customer’s Loyalty with the Mediating Role of the Perceived Value and Customer’s Satisfaction

    Directory of Open Access Journals (Sweden)

    Mahmoudreza Mostaghimi

    2017-01-01

    Full Text Available The purpose of this article is to investigate the effect of customer’s expectations and the perceived quality on customer’s loyalty with the mediating role of the perceived value and customer’s satisfaction. The statistic population of the article includes the customers of the agencies of Iran Khodro Company in Gilan province, the city of Rasht and due to the infinity of statistic population, the sample volume has been considered from the amount of 384, based on the Morgan table. After the collection of questionnaires, data has been analyzed by means of LISREL Software. The analysis of findings indicates that customer’s expectations of the products of Iran Khodro Company affected the perceived quality of the product as well as customer’s satisfaction positively and meaningfully. The research results have also indicated that the perceived quality of the products of Iran Khodro Company also has affected the perceived value of the product and the customer’s satisfaction, which has been representative of customer’s loyalty. In the area of customer’s perceptions of the quality of hardware, managers must pay more attention to beauty and charm of the surroundings and try to provide enough explanation and necessary response to customer’s questions about the selected automobiles. It is suggested to managers that by means of improving one of the dimensions of quality, they also improve customer’s perceptions and requests in other dimensions. Planning is necessary and required in order to improve the local space of agencies, improving the quality, and decreasing components prices. Planning for decreasing final price and supplying components with lower prices will be important.

  19. MSCT多期薄层扫描在诊断早期胰腺癌中的临床应用%Clinical application value analysis of MSCT expect the scanning of thin layer in diagnosis early pancreas cancer

    Institute of Scientific and Technical Information of China (English)

    李彬

    2010-01-01

    Objective Appraisement research MSCT expect the scanning technology of thin layer to diagnose value and its clinical meaning in early pancreas cancer. Methods Retrospective analysis 42 patients which was routine MSCT in early stage of many issue scannings of thin layer, pancreas cancer patients confirms via operation and pathology, go through MSCT expect the scanning of thin layer to compare normal pancreas organization and the strengthening change of tumor in being flat to sweep and expect scanning, according to CT the former sign diagnosis pancreas cancer parallel operation assessment of an image, and was compared with operation result appearance. Results In early stage, the direct sign of pancreas cancer was the weak reinforced phyma in pancreas, indirect sign was pancreas, the pipe expansion of gall bladder, pancreas body tail atrophy and pancreas outline change.Conclusions MSCT many issue scannings of thin layer make early stage of pancreas determine the nature to diagnose and treat to have got obvious improvement, it is the best scanning method of discovery early pancreas cancer.%目的 评价研究MSCT多期薄层扫描技术在早期胰腺癌中临床应用诊断价值及其临床意义价值分析.方法 回顾性分析66例行MSCT多期薄层扫描的早期胰腺癌患者并经过手术和病理证实,经MSCT多期薄层扫描比较正常胰腺组织和肿瘤在平扫和多期扫描中的增强变化,依照CT影像学征象诊断胰腺癌并行手术前评估,并与手术结果相比较.结果 早期胰腺癌的直接征象是胰腺内弱强化肿块,间接征象是胰、胆管扩张,胰体尾部萎缩及胰腺轮廓改变. 结论 MSCT多期薄层扫描技术使得胰腺的早期定性诊断和治疗有了明显的改善,是发现早期胰腺癌的最佳扫描方法.

  20. Double Conditional Expectation

    Institute of Scientific and Technical Information of China (English)

    HU Di-he

    2004-01-01

    The concept of double conditional expectation is introduced. A series of properties for the double conditional expectation are obtained several convergence theorems and Jensen inequality are proved. Finally we discuss the special cases and application for double conditional expectation.

  1. Expectation and conditioning

    Science.gov (United States)

    Coster, Adelle C. F.; Alstrøm, Preben

    2001-02-01

    We present a dynamical model that embodies both classical and instrumental conditioning paradigms in the same framework. The model is based on the formation of expectations of stimuli and of rewards. The expectations of stimuli are formed in a recurrent process called expectation learning in which one activity pattern evokes another. The expectation of rewards or punishments (motivation) is modelled using reinforcement learning.

  2. Valores atribuídos ao trabalho e expectativa de futuro: como os jovens se posicionam? Values attributed to work and expectations for the future: how young people position themselves?

    Directory of Open Access Journals (Sweden)

    Sheila Aparecida Ferreira Lachtim

    2011-10-01

    region. In general, young people from all groups perceive work as something that is valuable, essential to attain the growth and maturation that is expected in adulthood. The purpose of the study proved to be a little different, since while for some work is the means through which it is possible to achieve the values of consumption and social position, to others it is a means to meet basic survival needs. Thus, the future depends on the direction they take in the labor market, since this is believed to be the main means to materialize other dreams.

  3. The Qualitative Expectations Hypothesis

    DEFF Research Database (Denmark)

    Frydman, Roman; Johansen, Søren; Rahbek, Anders

    We introduce the Qualitative Expectations Hypothesis (QEH) as a new approach to modeling macroeconomic and financial outcomes. Building on John Muth's seminal insight underpinning the Rational Expectations Hypothesis (REH), QEH represents the market's forecasts to be consistent with the predictions...

  4. The Qualitative Expectations Hypothesis

    DEFF Research Database (Denmark)

    Frydman, Roman; Johansen, Søren; Rahbek, Anders

    2017-01-01

    We introduce the Qualitative Expectations Hypothesis (QEH) as a new approach to modeling macroeconomic and financial outcomes. Building on John Muth's seminal insight underpinning the Rational Expectations Hypothesis (REH), QEH represents the market's forecasts to be consistent with the predictions...

  5. Leisure and Alcohol Expectancies.

    Science.gov (United States)

    Carruthers, Cynthia P.

    1993-01-01

    Presents the results of a study that investigated the ways individuals expected drinking to affect their leisure experiences, and the relationship of those expectancies to alcohol consumption patterns. Data from a sample of 144 adults indicated they expected alcohol to positively affect their leisure experiences. (SM)

  6. Client Expectations for Counseling

    Science.gov (United States)

    Tinsley, Howard E. A.; Harris, Donna J.

    1976-01-01

    Undergraduate students (N=287) completed an 82-item questionnaire about their expectations of counseling. The respondents' strongest expectations were of seeing an experienced, genuine, expert, and accepting counselor they could trust. Expectancies that the counselor would be understanding and directive were lower. Significant sex differences were…

  7. Spiking the expectancy profiles

    DEFF Research Database (Denmark)

    Hansen, Niels Chr.; Loui, Psyche; Vuust, Peter

    Melodic expectations have long been quantified using expectedness ratings. Motivated by statistical learning and sharper key profiles in musicians, we model musical learning as a process of reducing the relative entropy between listeners' prior expectancy profiles and probability distributions...... learning over varying timescales enables listeners to generate expectations with reduced entropy....

  8. Expectations in experiments

    NARCIS (Netherlands)

    Wagener, F.

    2013-01-01

    The rational expectations hypothesis is one of the cornerstones of current economic theorising. this review discusses a number of experiments that focus on expectation formation by human subjects and analyses the implications for the rational expectations hypothesis. The experiments show that most a

  9. The Power of Expectations

    Science.gov (United States)

    Cross, Neal

    2008-01-01

    Principals want teachers to do more than profess high expectations for their students. Principals want teachers to have the knowledge and skills to realize their expectations for students by using strategies that increase students' attention to their achievement and responsibilities for learning. Current expectancy literature states that teachers…

  10. Expectations of two-level telegraph noise

    CERN Document Server

    Fern, J

    2006-01-01

    We find expectation values of functions of time integrated two-level telegraph noise. Expectation values of this noise are evaluated under simple control pulses. Both the Gaussian limit and $1/f$ noise are considered. We apply the results to a specific superconducting quantum computing example, which illustrates the use of this technique for calculating error probabilities.

  11. Humans expect generosity

    Science.gov (United States)

    Brañas-Garza, Pablo; Rodríguez-Lara, Ismael; Sánchez, Angel

    2017-02-01

    Mechanisms supporting human ultra-cooperativeness are very much subject to debate. One psychological feature likely to be relevant is the formation of expectations, particularly about receiving cooperative or generous behavior from others. Without such expectations, social life will be seriously impeded and, in turn, expectations leading to satisfactory interactions can become norms and institutionalize cooperation. In this paper, we assess people’s expectations of generosity in a series of controlled experiments using the dictator game. Despite differences in respective roles, involvement in the game, degree of social distance or variation of stakes, the results are conclusive: subjects seldom predict that dictators will behave selfishly (by choosing the Nash equilibrium action, namely giving nothing). The majority of subjects expect that dictators will choose the equal split. This implies that generous behavior is not only observed in the lab, but also expected by subjects. In addition, expectations are accurate, matching closely the donations observed and showing that as a society we have a good grasp of how we interact. Finally, correlation between expectations and actual behavior suggests that expectations can be an important ingredient of generous or cooperative behavior.

  12. Determining health expectancies

    National Research Council Canada - National Science Library

    Robine, Jean-Marie

    2003-01-01

    ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Jean-Marie Robine 9 1 Increase in Life Expectancy and Concentration of Ages at Death . . . . France Mesle´ and Jacques Vallin 13 2 Compression of Morbidity...

  13. Managing Customer Expectations

    National Research Council Canada - National Science Library

    Jeff Parke

    2012-01-01

      If a service provider customer's satisfaction level is changing, find out if something has happened, either at the customer's end or at the service provider's, to affect their expectations or perceptions...

  14. Expect Respect: Healthy Relationships

    Science.gov (United States)

    ... Pediatrician Ages & Stages Prenatal Baby Toddler Preschool Gradeschool Teen Dating & Sex Fitness Nutrition Driving Safety School Substance Abuse Young Adult Healthy Children > Ages & Stages > Teen > Dating & Sex > Expect Respect: Healthy Relationships Ages & Stages Listen Español ...

  15. Spiking the expectancy profiles

    DEFF Research Database (Denmark)

    Hansen, Niels Chr.; Loui, Psyche; Vuust, Peter

    Melodic expectations are generated with different degrees of certainty. Given distributions of expectedness ratings for multiple continuations of each context, as obtained with the probe-tone paradigm, this certainty can be quantified in terms of Shannon entropy. Because expectations arise from...... Kullback-Leibler or Jensen-Shannon Divergence) between listeners’ prior expectancy profiles and probability distributions of a musical style or of stimuli used in short-term experiments. Five previous probe-tone experiments with musicians and non-musicians were revisited. In Experiments 1-2 participants...... and relevance of musical training and within-participant decreases after short-term exposure to novel music. Thus, whereas inexperienced listeners make high-entropy predictions, statistical learning over varying timescales enables listeners to generate melodic expectations with reduced entropy...

  16. Expected Classification Accuracy

    Directory of Open Access Journals (Sweden)

    Lawrence M. Rudner

    2005-08-01

    Full Text Available Every time we make a classification based on a test score, we should expect some number..of misclassifications. Some examinees whose true ability is within a score range will have..observed scores outside of that range. A procedure for providing a classification table of..true and expected scores is developed for polytomously scored items under item response..theory and applied to state assessment data. A simplified procedure for estimating the..table entries is also presented.

  17. History Vs. Expectations

    OpenAIRE

    Paul Krugman

    1989-01-01

    In models with external economies, there are often two or more long run equilibria. Which equilibrium is chosen? Much of the literature presumes that "history" sets initial conditions which determine the outcome, but an alternative view stresses the role of "expectations", i.e. of self-fulfilling prophecy. This paper uses a simple trade model with both external economies and adjustment costs to show how the parameters of the economy determine the relative importance of history and expectation...

  18. Expectations for English Teachers

    Institute of Scientific and Technical Information of China (English)

    刘铁凤

    2009-01-01

    In the article,the author consciously compared American educational systems and the students' expectation of their teachers with their Chinese equivalents.An investigation about students' expectations towards their teachers is done among college freshmen she was teaching.The result is both exciting and worrying.Through careful analysis and summary she has made,the author hopes it will arouse concerns of both teachers and students.

  19. Controllability under rational expectations.

    OpenAIRE

    Hughes Hallett Andrew; Di Bartolomeo Giovanni; Acocella Nicola

    2008-01-01

    We show that rational expectations do not affect the controllability of an economic system, either in its static or in its dynamic version, even though their introduction in many other circumstances may make it impossible for the policymaker to affect certain variables due to policy invariance, policy neutrality or time inconsistency problems. The controllability conditions stated by Tinbergen and subsequent authors continue to hold under rational expectations; and when they are satisfied rat...

  20. Longevity and Life Expectancy

    OpenAIRE

    Marchetti, C.

    1997-01-01

    The increase in life expectancy at all ages during the last two centuries is in need of a quantitative model capable of resuming the whole process under a single concept and simple mathematics. The basic hypothesis was that through improved hygiene, medicine, and life-style, the stumbling blocks to the full expression of longevity were progressively removed. The mathematics of learning processes were then applied to the secular evolution of life expectancy at various ages. The hypothesis prov...

  1. Sex and life expectancy.

    Science.gov (United States)

    Seifarth, Joshua E; McGowan, Cheri L; Milne, Kevin J

    2012-12-01

    A sexual dimorphism in human life expectancy has existed in almost every country for as long as records have been kept. Although human life expectancy has increased each year, females still live longer, on average, than males. Undoubtedly, the reasons for the sex gap in life expectancy are multifaceted, and it has been discussed from both sociological and biological perspectives. However, even if biological factors make up only a small percentage of the determinants of the sex difference in this phenomenon, parity in average life expectancy should not be anticipated. The aim of this review is to highlight biological mechanisms that may underlie the sexual dimorphism in life expectancy. Using PubMed, ISI Web of Knowledge, and Google Scholar, as well as cited and citing reference histories of articles through August 2012, English-language articles were identified, read, and synthesized into categories that could account for biological sex differences in human life expectancy. The examination of biological mechanisms accounting for the female-based advantage in human life expectancy has been an active area of inquiry; however, it is still difficult to prove the relative importance of any 1 factor. Nonetheless, biological differences between the sexes do exist and include differences in genetic and physiological factors such as progressive skewing of X chromosome inactivation, telomere attrition, mitochondrial inheritance, hormonal and cellular responses to stress, immune function, and metabolic substrate handling among others. These factors may account for at least a part of the female advantage in human life expectancy. Despite noted gaps in sex equality, higher body fat percentages and lower physical activity levels globally at all ages, a sex-based gap in life expectancy exists in nearly every country for which data exist. There are several biological mechanisms that may contribute to explaining why females live longer than men on average, but the complexity of the

  2. Test Expectancy and Memory for Important Information

    Science.gov (United States)

    Middlebrooks, Catherine D.; Murayama, Kou; Castel, Alan D.

    2017-01-01

    Prior research suggests that learners study and remember information differently depending upon the type of test they expect to later receive. The current experiments investigate how testing expectations impact the study of and memory for valuable information. Participants studied lists of words ranging in value from 1 to 10 points with the goal…

  3. Chinese students' great expectations

    DEFF Research Database (Denmark)

    Thøgersen, Stig

    2013-01-01

    The article focuses on Chinese students' hopes and expectations before leaving to study abroad. The national political environment for their decision to go abroad is shaped by an official narrative of China's transition to a more creative and innovative economy. Students draw on this narrative...... to study abroad, the article shows how personal, professional and even national goals are closely interwoven. Students expect education abroad to be a personally transformative experience, but rather than defining their goals of individual freedom and creativity in opposition to the authoritarian political...

  4. Performance expectation plan

    Energy Technology Data Exchange (ETDEWEB)

    Ray, P.E.

    1998-09-04

    This document outlines the significant accomplishments of fiscal year 1998 for the Tank Waste Remediation System (TWRS) Project Hanford Management Contract (PHMC) team. Opportunities for improvement to better meet some performance expectations have been identified. The PHMC has performed at an excellent level in administration of leadership, planning, and technical direction. The contractor has met and made notable improvement of attaining customer satisfaction in mission execution. This document includes the team`s recommendation that the PHMC TWRS Performance Expectation Plan evaluation rating for fiscal year 1998 be an Excellent.

  5. Expectations for Cancun Conference

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Compared with the great hopes raised by the Copenhagen Climate Conference in 2009, the 2010 UN Climate Change Conference in Cancun aroused fewer expectations. However, the international community is still waiting for a positive outcome that will benefit humankind as a whole.

  6. Great Expectations. [Lesson Plan].

    Science.gov (United States)

    Devine, Kelley

    Based on Charles Dickens' novel "Great Expectations," this lesson plan presents activities designed to help students understand the differences between totalitarianism and democracy; and a that a writer of a story considers theme, plot, characters, setting, and point of view. The main activity of the lesson involves students working in groups to…

  7. Maintaining High Expectations

    Science.gov (United States)

    Williams, Roger; Williams, Sherry

    2014-01-01

    Author and husband, Roger Williams, is hearing and signs fluently, and author and wife, Sherry Williams, is deaf and uses both speech and signs, although she is most comfortable signing. As parents of six children--deaf and hearing--they are determined to encourage their children to do their best, and they always set their expectations high. They…

  8. Quality Adjusted Life Expectancy

    NARCIS (Netherlands)

    R. Veenhoven (Ruut)

    2014-01-01

    markdownabstract__Abstract__ The term life expectancy is used for statistical estimates of how long a particular kind of people will live. Such estimates are based on the observed length of life of similar people who have died in the past and on probable future changes in mortality. Used in this

  9. Quality Adjusted Life Expectancy

    NARCIS (Netherlands)

    R. Veenhoven (Ruut)

    2014-01-01

    markdownabstract__Abstract__ The term life expectancy is used for statistical estimates of how long a particular kind of people will live. Such estimates are based on the observed length of life of similar people who have died in the past and on probable future changes in mortality. Used in this se

  10. Expecting a Soft Landing

    Institute of Scientific and Technical Information of China (English)

    Lu Zhongyuan

    2011-01-01

    China's recent slovdown is the result of short-term moderation to the overheated real economy and the growth rate is still within a normal range.China's economic growth rate is expected to exceed 9 percent this year.A healthy economic growth rate features fluctuations in a reasonable range that is determined by growth potential.

  11. Better Than Expected

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The first-quarter economic indicators, released by the National Bureau of Statistics (NBS) in mid-April, have revealed some "better-than-expected" developments in the nation’s economy, and considerably cleared up initial concerns that China may be sailing further into the doldrums as a result of the ongoing global economic crisis.

  12. Chinese students' great expectations

    DEFF Research Database (Denmark)

    Thøgersen, Stig

    2013-01-01

    The article focuses on Chinese students' hopes and expectations before leaving to study abroad. The national political environment for their decision to go abroad is shaped by an official narrative of China's transition to a more creative and innovative economy. Students draw on this narrative...... system, they think of themselves as having a role in the transformation of Chinese attitudes to education and parent-child relations....

  13. Expectations for Cancun Conference

    Institute of Scientific and Technical Information of China (English)

    DING ZHITAO

    2010-01-01

    Compared with the great hopes raised by the Copenhagen Climate Conference in 2009, the 2010 UN Climate Change Conference in Cancun aroused fewer expectations. However, the international community is still waiting for a positive outcome that will benefit humankind as a whole. The Cancun conference is another important opportunity for all the participants to advance the Bali Road Map negotiations after last year's meeting in Copenhagen, which failed to reach a legally binding treaty for the years beyond 2012.

  14. Market Expects Demand Increase

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    In the recent releasing Textile Industry Invigorating Plan,"givingattention to both domestlc and overseas markets"is put into a keyposition.Under a series policies,such as increasing the tax rebaterate for textile and garment exports,and granting loan for SME,thefurther development of this industry is expectative.Otherwise,weshould know that it costs time for demand driving.This need ourpatients.The only questionis how much time we have to wait.

  15. Modelling and Forecasting Health Expectancy

    NARCIS (Netherlands)

    I.M. Májer (István)

    2012-01-01

    textabstractLife expectancy of a human population measures the expected (or average) remaining years of life at a given age. Life expectancy can be defined by two forms of measurement: the period and the cohort life expectancy. The period life expectancy represents the mortality conditions at a spec

  16. Agreeing on expectations

    DEFF Research Database (Denmark)

    Nielsen, Christian; Bentsen, Martin Juul

    Commitment and trust are often mentioned as important aspects of creating a perception of reliability between counterparts. In the context of university-industry collaborations (UICs), agreeing on ambitions and expectations are adamant to achieving outcomes that are equally valuable to all parties...... involved. Despite this, our initial probing indicated that such covenants rarely exist. As such, this paper draws on project management theory and proposes the possibility of structuring assessments of potential partners before university-industry collaborations are brought to life. Our analysis suggests...

  17. Application value and safety risk expectation of transgenic plants and their products%转基因植物及其产品的应用价值和安全风险展望

    Institute of Scientific and Technical Information of China (English)

    梁靓; 李毅然

    2015-01-01

    ABSTRACT:Along with the rapid development of transgenic engineering and the transgenic crops cultivation, the genetically modified crops and their products are more in-depth in people’s life. This paper mainly intro-duced the application value and safety risk of transgenic crops and their products. From a environment and food safety controversial point of view, it was discussed from the cultivation of transgenic plants leading to the en-vironmental problems, i.e. gene drift, natural population changes and heterologous recombinant virus. Moreo-ver, the transgenic plants could produce allergens, transgenic crops resistance and other adverse effects to hu-man health. In addition, this paper listed the laws and regulations of the safety management relevant to trans-genic plants. From aspect of safety risk supervision, the detective methods of transgenic food and suggestions about the safety risk management were also put forwarded.%随着转基因工程的飞速发展和转基因作物的种植推广,转基因植物及其产品逐渐深入人们的生活。本文介绍了转基因植物及其产品的应用价值和安全风险,从备受争议的环境和食品安全角度进行阐述,转基因植物的种植可能导致基因漂流、自然生物种群变化、病毒异源重组等环境影响,还可能产生过敏源、转基因作物抗性等威胁人类健康的不利影响。此外本文列举了各个国家关于转基因植物安全管理的相关法律法规,从安全风险监管角度出发,介绍了转基因食品的检测方法,并对转基因植物及其产品的安全风险管理提出了建议。

  18. ATLAS: Exceeding all expectations

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    “One year ago it would have been impossible for us to guess that the machine and the experiments could achieve so much so quickly”, says Fabiola Gianotti, ATLAS spokesperson. The whole chain – from collision to data analysis – has worked remarkably well in ATLAS.   The first LHC proton run undoubtedly exceeded expectations for the ATLAS experiment. “ATLAS has worked very well since the beginning. Its overall data-taking efficiency is greater than 90%”, says Fabiola Gianotti. “The quality and maturity of the reconstruction and simulation software turned out to be better than we expected for this initial stage of the experiment. The Grid is a great success, and right from the beginning it has allowed members of the collaboration all over the world to participate in the data analysis in an effective and timely manner, and to deliver physics results very quickly”. In just a few months of data taking, ATLAS has observed t...

  19. Gender Roles and Expectations

    Directory of Open Access Journals (Sweden)

    Susana A. Eisenchlas

    2013-09-01

    Full Text Available One consequence of the advent of cyber communication is that increasing numbers of people go online to ask for, obtain, and presumably act upon advice dispensed by unknown peers. Just as advice seekers may not have access to information about the identities, ideologies, and other personal characteristics of advice givers, advice givers are equally ignorant about their interlocutors except for the bits of demographic information that the latter may offer freely. In the present study, that information concerns sex. As the sex of the advice seeker may be the only, or the predominant, contextual variable at hand, it is expected that that identifier will guide advice givers in formulating their advice. The aim of this project is to investigate whether and how the sex of advice givers and receivers affects the type of advice, through the empirical analysis of a corpus of web-based Spanish language forums on personal relationship difficulties. The data revealed that, in the absence of individuating information beyond that implicit in the advice request, internalized gender expectations along the lines of agency and communality are the sources from which advice givers draw to guide their counsel. This is despite the trend in discursive practices used in formulating advice, suggesting greater language convergence across sexes.

  20. Probability via expectation

    CERN Document Server

    Whittle, Peter

    1992-01-01

    This book is a complete revision of the earlier work Probability which ap­ peared in 1970. While revised so radically and incorporating so much new material as to amount to a new text, it preserves both the aim and the approach of the original. That aim was stated as the provision of a 'first text in probability, de­ manding a reasonable but not extensive knowledge of mathematics, and taking the reader to what one might describe as a good intermediate level'. In doing so it attempted to break away from stereotyped applications, and consider applications of a more novel and significant character. The particular novelty of the approach was that expectation was taken as the prime concept, and the concept of expectation axiomatized rather than that of a probability measure. In the preface to the original text of 1970 (reproduced below, together with that to the Russian edition of 1982) I listed what I saw as the advantages of the approach in as unlaboured a fashion as I could. I also took the view that the text...

  1. Great expectations: what do patients expect and how can expectations be managed?

    Science.gov (United States)

    Newton, J T; Cunningham, S J

    2013-06-01

    Patients' expectations of their treatment are a key determinant in their satisfaction with treatment. Expectations may encompass not only notions of the outcome of treatment, but also the process of treatment. This article explores the processes by which expectations are formed, differences in expectations across patient groups, and the psychopathology of individuals with unrealistic expectations of treatment manifest in body dysmorphic disorder.

  2. Macro Expectations, Aggregate Uncertainty, and Expected Term Premia

    DEFF Research Database (Denmark)

    Dick, Christian D.; Schmeling, Maik; Schrimpf, Andreas

    Based on individual expectations from the Survey of Professional Forecasters, we construct a realtime proxy for expected term premium changes on long-term bonds. We empirically investigate the relation of these bond term premium expectations with expectations about key macroeconomic variables as ...

  3. Macro Expectations, Aggregate Uncertainty, and Expected Term Premia

    DEFF Research Database (Denmark)

    Dick, Christian D.; Schmeling, Maik; Schrimpf, Andreas

    2013-01-01

    Based on individual expectations from the Survey of Professional Forecasters, we construct a realtime proxy for expected term premium changes on long-term bonds. We empirically investigate the relation of these bond term premium expectations with expectations about key macroeconomic variables as ...

  4. Raising Student Expectations.

    Science.gov (United States)

    VocEd, 1980

    1980-01-01

    Authors explore ways of helping students improve their self-esteem, interpersonal relationships, and value to an employer. Offers strategies from the world of work (customer satisfaction cards) and the world of dance (chorus line class that improves poise in job interviews). Suggests ways to find appropriate instructional materials for handicapped…

  5. Raising Student Expectations.

    Science.gov (United States)

    VocEd, 1980

    1980-01-01

    Authors explore ways of helping students improve their self-esteem, interpersonal relationships, and value to an employer. Offers strategies from the world of work (customer satisfaction cards) and the world of dance (chorus line class that improves poise in job interviews). Suggests ways to find appropriate instructional materials for handicapped…

  6. Preschool Children's Expectations for Parental Discipline

    OpenAIRE

    Graham, Angie Geertsen

    1998-01-01

    Many factors influence preschool children's expectations for parental discipline. Parent characteristics such as personality, values, social class, and disciplinary methods can affect the expectations children have for parental discipline. Children's ability to understand and interpret parental messages can also influence how they will respond. All of these factors need to be taken into consideration in order for effective communication between parents and children to occur. In this study,...

  7. Monitoring treatment expectations in patients with an implantable cardioverter-defibrillator using the EXPECT-ICD scale

    NARCIS (Netherlands)

    Habibovic, M.; Pedersen, S.S.; van den Broek, K.C.; Denollet, J.

    2014-01-01

    Aims Patient treatment expectations may affect cardiac outcomes; however, till date, no validated instruments have been developed to monitor treatment expectations in patients with an implantable cardioverter-defibrillator (ICD). This study evaluates the predictive value of the newly developed

  8. Five Values of Giftedness

    Science.gov (United States)

    Besjes-de Bock, Karin M.; de Ruyter, Doret J.

    2011-01-01

    This article describes five values attributed to giftedness. The ascription of values to this phenomenon resembles values attached to gifts in gift-giving processes. Whereas gift-giving often includes expectations of reciprocity, each gift possesses a numerical, utility, social, personal, and intrinsic value. Developmental models of giftedness and…

  9. Five Values of Giftedness

    Science.gov (United States)

    Besjes-de Bock, Karin M.; de Ruyter, Doret J.

    2011-01-01

    This article describes five values attributed to giftedness. The ascription of values to this phenomenon resembles values attached to gifts in gift-giving processes. Whereas gift-giving often includes expectations of reciprocity, each gift possesses a numerical, utility, social, personal, and intrinsic value. Developmental models of giftedness and…

  10. 碳汇经营目标下的林地期望价值变化及碳供给——基于杉木裸地造林假设研究%Change of Forestland Expected Value and Carbon Supply in the Objective of Carbon Sequestration: Based on the Chinese Fir Plantation in Bared Land

    Institute of Scientific and Technical Information of China (English)

    朱臻; 沈月琴; 张耀启; 石文; 王枫

    2012-01-01

    Increase in forest carbon sinks is widely accepted as an important measure for reducing climate change. In this paper, a growth model of Chinese fir, and the Faustmann model of carbon density and price were used to comparatively analyze the optimal rotation age and forestland expectation value of the traditional timber management and the combined timber and carbon management. The empirical data was collected from the Changhua Forest Farm in Zhejiang Province. A sensitivity analysis was conducted with different interest rates and carbon prices, and the carbon supply curve was developed. It was found that the optimal rotation of Chinese fir in the joint management did not changed due to the fact that timber price was much higher than carbon price, suggesting that carbon supply for current forestland would not increase significantly within a large range change of carbon price. However, in terms of rapid increase in expectation value of the Chinese fir forestland with the carbon management model, carbon sink of the woodland has a huge potential investment value, which also suggests that forest carbon sinks may have a huge impact for the land-use change.

  11. New standard exceeds expectations

    Energy Technology Data Exchange (ETDEWEB)

    Bennett, M.J. (Environmental Data Resources Inc., Southport, CT (United States))

    1993-08-01

    The new ASTM environmental due diligence standard is delivering far more than expected when it was conceived in 1990. Its use goes well beyond the relatively narrow legal liability protection that was the primary goal in its development. The real estate industry, spearheaded by the lending community, was preoccupied with environmental risk and liability. Lenders throughout the concept's evolution have been at the forefront in defining environmental due diligence. The lender liability rule is intended to protect property owners from CERCLA liability for property they own or companies they manage (for example, as a result of foreclosure). The new site assessment standard increasingly is considered a benchmark for prudent environmental due diligence in the interest of risk management, not legal liability. The focus on risk management, including collateral devaluation and corporate credit risk, are becoming dominant areas of policy focus in the lending industry. Lenders now are revising their policies to incorporate transactions beyond issues of real estate, in which a company's economic viability and ability to service debt could be impacted by an environmental problem unrelated to property transfers.

  12. Feminine values and happy life-expectancy in nations.

    NARCIS (Netherlands)

    Arrindell, W.A.; Veenhoven, R

    2002-01-01

    Cross-national studies suggest that people are happier in feminine nations that are also economically affluent. The first objective of the present study was to replicate this finding with a quality of life index which is more comprehensive than the usual measures of subjective well-being. This

  13. Vacuum expectation value of A^2 from LQCD

    CERN Document Server

    Pène, O; Boucaud, Ph; Yaouanc, A Le; Leroy, J P; Micheli, J; Brinet, M; Gravina, M; De Soto, F; Liu, Z; Morenas, V; Petrov, K; Rodríguez-Quintero, J

    2011-01-01

    We argue from LQCD that there is a non vanishing v.e.v of $A_a^\\mu A^a_\\mu$ in QCD in the Landau gauge. We use operator product expansion to provide a clear definition of $A_a^\\mu A^a_\\mu$ and extract a number both in the quenched and unquenched case.

  14. Computing the Expected Value and Variance of Geometric Measures

    DEFF Research Database (Denmark)

    Staals, Frank; Tsirogiannis, Constantinos

    2017-01-01

    points in P. This problem is a crucial part of modern ecological analyses; each point in P represents a species in d-dimensional trait space, and the goal is to compute the statistics of a geometric measure on this trait space, when subsets of species are selected under random processes. We present...... efficient exact algorithms for computing the mean and variance of several geometric measures when point sets are selected under one of the described random distributions. More specifically, we provide algorithms for the following measures: the bounding box volume, the convex hull volume, the mean pairwise...

  15. Feminine values and happy life-expectancy in nations.

    NARCIS (Netherlands)

    Arrindell, W.A.; Veenhoven, R

    2002-01-01

    Cross-national studies suggest that people are happier in feminine nations that are also economically affluent. The first objective of the present study was to replicate this finding with a quality of life index which is more comprehensive than the usual measures of subjective well-being. This compr

  16. Belief Importance in Expectancy-Value Models of Attitudes

    NARCIS (Netherlands)

    J. van der Pligt; N.K. de Vries

    1998-01-01

    In this study, 312 respondents were asked to indicate their attitude toward smoking and their smoking behavior. Attitudes were assessed by a direct attitude measure (4 items) and a series of 15 belief statements about the possible consequences of smoking. Next, respondents were asked to select the 3

  17. A Targeting Problem Exact versus Expected-Value Approaches.

    Science.gov (United States)

    1980-04-01

    1976, AD A030 457 P 7 ’C’ ~ Comparison of the Tsipis "K" Measure and a Com’-~P17 puter Simulation." 24 pp.. Mar 1979 (Presented at PP 161 K~leinman...Oervew of tte OSGI pp 195 Deoelopment Expendstures in the Aato, Slreet and ONR Conference on First Term Enlisted Attrition," Brechling, Frank

  18. Powerball, Expected Value, and the Law of (Very) Large Numbers

    Science.gov (United States)

    Mecklin, Christopher J.; Donnelly, Robert G.

    2005-01-01

    In this paper, we consider some combinatorial and statistical aspects of the popular "Powerball" lottery game. It is not difficult for students in an introductory statistics course to compute the probabilities of winning various prizes, including the "jackpot" in the Powerball game. Assuming a unique jackpot winner, it is not difficult to find the…

  19. Expectancy models of alcohol use.

    Science.gov (United States)

    Stacy, A W; Widaman, K F; Marlatt, G A

    1990-05-01

    The primary goal of the present article is to compare expectancy models with competing attitude models of alcohol use. First, several methodological issues in expectancy research were addressed, to more adequately compare the theoretical models. Study 1 examined the effect of possible self-report biases on associations among expectancy constructs and alcohol use. In Studies 2 and 3, the basic distinction between general factors of positive and negative alcohol expectancies was investigated in both cross-sectional and prospective models. Alternative predictions that were based on competing expectancy and attitude theories were evaluated primarily in Study 3. Results from these studies supported the validity of the expectancy constructs and the proposed distinctions among expectancy and attitude constructs-in terms of strong discriminant validity, absence of self-report bias, and differential prediction of alcohol use. Furthermore, the findings favored certain expectancy models over alternative attitude models of alcohol use, reaffirming the usefulness of the expectancy framework.

  20. Social gradient in life expectancy and health expectancy in Denmark

    DEFF Research Database (Denmark)

    Brønnum-Hansen, Henrik; Andersen, Otto; Kjøller, Mette

    2004-01-01

    Health status of a population can be evaluated by health expectancy expressed as average lifetime in various states of health. The purpose of the study was to compare health expectancy in population groups at high, medium and low educational levels.......Health status of a population can be evaluated by health expectancy expressed as average lifetime in various states of health. The purpose of the study was to compare health expectancy in population groups at high, medium and low educational levels....

  1. Great Expectations: Temporal Expectation Modulates Perceptual Processing Speed

    Science.gov (United States)

    Vangkilde, Signe; Coull, Jennifer T.; Bundesen, Claus

    2012-01-01

    In a crowded dynamic world, temporal expectations guide our attention in time. Prior investigations have consistently demonstrated that temporal expectations speed motor behavior. We explore effects of temporal expectation on "perceptual" speed in three nonspeeded, cued recognition paradigms. Different hazard rate functions for the cue-stimulus…

  2. Student Expectations in Introductory Physics.

    Science.gov (United States)

    Redish, Edward F.; Saul, Jeffery M.; Steinberg, Richard N.

    Students' understanding of what science is about and how it is done and their expectations as to what goes on in a science course play a powerful role in what they can get out of introductory college physics. This is particularly true when there is a large gap between what the students expect to do and what the instructor expects them to do. This…

  3. The Value of Value

    DEFF Research Database (Denmark)

    Sørensen, Asger

    parts of business ethics given prominence to especially one term, namely `value'. The question that interests me is the following: What does the articulation of ethics and morality in terms of values mean for ethics and morality as such. Or, to put the question in a more fashionably way: What...... is the value of value for morality and ethics?To make things a bit more precise, we can make use of the common distinction between ethics and morality, i.e. that morality is the immediate, collective and unconscious employment of morals, whereas ethics is the systematic, individual and conscious reflections...

  4. Adding value(s)

    DEFF Research Database (Denmark)

    Carré, David

    2015-01-01

    , 1992). In response, behavioral economics (Camerer, 1999) has shown that agents have values other than optimization underpinning their decisions. Therefore, concerns arose regarding which values are guiding the agent but not about how such values became relevant for the agent. In this presentation, I......Most economic inquires revolve around agents making decisions. Getting the ‘best value’, it is assumed, drives such decisions: gaining most while risking least. This assumption has been debunked by showing that people does not always choose neither maximum benefit nor less risk (Kahneman & Tversky...... will explore the consequences of shifting to the latter perspective, i.e. looking for the generative framework of values. Here I argue that economic behavior should also be seen as a sense-making process, guided by values that are chosen/rejected along with fellow human beings, in specific socio...

  5. Expectations on Track? High School Tracking and Adolescent Educational Expectations

    DEFF Research Database (Denmark)

    Karlson, Kristian Bernt

    2015-01-01

    This paper examines the role of adaptation in expectation formation processes by analyzing how educational tracking in high schools affects adolescents' educational expectations. I argue that adolescents view track placement as a signal about their academic abilities and respond to it in terms...... of modifying their educational expectations. Applying a difference-in-differences approach to the National Educational Longitudinal Study of 1988, I find that being placed in an advanced or honors class in high school positively affects adolescents’ expectations, particularly if placement is consistent across...... subjects and if placement contradicts tracking experiences in middle school. My findings support the hypothesis that adolescents adapt their educational expectations to ability signals sent by schools....

  6. Decomposing change in life expectancy

    DEFF Research Database (Denmark)

    Vaupel, James W.; Canudas Romo, Vladimir

    2003-01-01

    We extend Nathan Keyfitz's research on continuous change in life expectancy over time by presenting and proving a new formula for decomposing such change. The formula separates change in life expectancy over time into two terms. The first term captures the general effect of reduction in death rates...... at all ages, and the second term captures the effect of heterogeneity in the pace of improvement in mortality at different ages. We extend the formula to decompose change in life expectancy into age-specific and cause-specific components, and apply the methods to analyze changes in life expectancy...

  7. 一种改进模糊期望值决策法在隧道施工安全评价中的应用%Application of the improved fuzzy expectancy value decision-making method to the risk assessment on tunnel excavation

    Institute of Scientific and Technical Information of China (English)

    谢洪涛

    2013-01-01

    结合隧道施工的特点,提出了基于径向量基函数神经网络修正的模糊期望值决策法.首先采用三角模糊数的形式给出评价指标的取值以及评价者的主观经验值,基于模糊期望值决策法得到隧道施工安全的评价期望值;然后构造适用于高维输入的径向量基函数神经网络算法,建立网络自组织调整隐节点优化规则,采用RBF神经网络修正模糊决策得到期望值,从而建立了RBF神经网络修正模糊期望值的安全评价方法.从安全管理、环境条件等8个方面建立了隧道工程安全评价指标体系.结合工程案例,运用该方法对隧道工程的施工安全进行评价.结果表明,总体上该方法与模糊评价法结果一致,但更具合理性和准确性.%The paper is aimed at presenting our research results on the application of the improved fuzzy expectancy decision-making method to the tunnel excavation risk assessment.So far as we can see,there exist two main problems with this kind of safety assessment.That is,on the one hand,it is lack in precise index system with a lot of subjective factors and experienced factors,which are hard to quantify and standardize.On the other hand,traditional fuzzy comprehensive evaluation methods prove to be complicated and mainly predictable in nature.In order to solve the problems involved,we have done necessary research on the fuzzy expected value decision-making method (FDM) and established a fuzzy expected value decision-making method modified by the radial basis function(RBF) neural network.To be exact,we have done the following innovations:Firstly,in order to establish a scientifically-based model of safety assessment of tunnel construction,we have established a safety evaluation index system for the tunnel construction according to the risk level of factors and special technologies in tunnel construction,which can be divided into eight major subsystems:the security management,the blasting equipment

  8. Fiscal Consolidations and Heterogeneous Expectations

    NARCIS (Netherlands)

    C. Hommes; J. Lustenhouwer; K. Mavromatis

    2015-01-01

    We analyze fiscal consolidations using a New Keynesian model where agents have heterogeneous expectations and are uncertain about the composition of consoidations. Heterogeneity in expectations may amplify expansions, stabilizing thus the debt-to-GDP ratio faster under tax based consolidations, in t

  9. Genomic medicine: too great expectations?

    Science.gov (United States)

    O'Rourke, P P

    2013-08-01

    As advances in genomic medicine have captured the interest and enthusiasm of the public, an unintended consequence has been the creation of unrealistic expectations. Because these expectations may have a negative impact on individuals as well as genomics in general, it is important that they be understood and confronted.

  10. High Hopes and High Expectations!

    Science.gov (United States)

    Wilford, Sara

    2006-01-01

    The start of each new school year is an especially hopeful time, and this author has found that clearly communicating expectations for teachers and families can set the stage for a wonderful new school year. This article discusses the expectations of teachers, directors, and families as a new school year begins.

  11. Formation of Rationally Heterogeneous Expectations

    NARCIS (Netherlands)

    Pfajfar, D.

    2012-01-01

    Abstract: This paper models expectation formation by taking into account that agents produce heterogeneous expectations due to model uncertainty, informational frictions and different capacities for processing information. We show that there are two general classes of steady states within this frame

  12. Adolescents' Academic Expectations and Achievement.

    Science.gov (United States)

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

    2001-01-01

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

  13. High Hopes and High Expectations!

    Science.gov (United States)

    Wilford, Sara

    2006-01-01

    The start of each new school year is an especially hopeful time, and this author has found that clearly communicating expectations for teachers and families can set the stage for a wonderful new school year. This article discusses the expectations of teachers, directors, and families as a new school year begins.

  14. Sibling Status Effects: Adult Expectations.

    Science.gov (United States)

    Baskett, Linda Musun

    1985-01-01

    This study attempted to determine what expectations or beliefs adults might hold about a child based on his or her sibling status alone. Ratings on 50 adjective pairs for each of three sibling status types, only, oldest, and youngest child, were assessed in relation to adult expectations, birth order, and parental status of rater. (Author/DST)

  15. Economic Loan Loss Provision and Expected Loss

    Directory of Open Access Journals (Sweden)

    Stefan Hlawatsch

    2010-10-01

    Full Text Available The intention of a loan loss provision is the anticipation of the loan's expected losses by adjusting the book value of the loan. Furthermore, this loan loss provision has to be compared to the expected loss according to Basel II and, in the case of a difference, liable equity has to be adjusted. This however assumes that the loan loss provision and the expected loss are based on a similar economic rationale, which is only valid conditionally in current loan loss provisioning methods according to IFRS. Therefore, differences between loan loss provisions and expected losses should only result from different approaches regarding the parameter estimation within each model and not due to different assumptions regarding the outcome of the model. The provisioning and accounting model developed in this paper overcomes the before-mentioned shortcomings and is consistent with an economic rationale of expected losses. Additionally, this model is based on a close-to-market valuation of the loan that is in favor of the basic idea of IFRS. Suggestions for changes in current accounting and capital requirement rules are provided.

  16. Life Expectancy in 2040: What Do Clinical Experts Expect?

    DEFF Research Database (Denmark)

    Canudas-Romo, Vladimir; DuGoff, Eva H; Wu, Albert W.;

    2016-01-01

    We use expert clinical and public health opinion to estimate likely changes in the prevention and treatment of important disease conditions and how they will affect future life expectancy. Focus groups were held including clinical and public health faculty with expertise in the six leading causes...... of death in the United States. Mortality rates and life tables for 2040 were derived by sex and age. Life expectancy at age 20 and 65 was compared to figures published by the Social Security Administration and to estimates from the Lee-Carter method. There was agreement among all three approaches that life...... expectancy at age 20 will increase by approximately one year per decade for females and males between now and 2040. According to the clinical experts, 70% of the improvement in life expectancy will occur in cardiovascular disease and cancer, while in the last 30 years most of the improvement has occurred...

  17. More Value through Greater Differentiation: Gender Differences in Value Beliefs about Math

    Science.gov (United States)

    Gaspard, Hanna; Dicke, Anna-Lena; Flunger, Barbara; Schreier, Brigitte; Häfner, Isabelle; Trautwein, Ulrich; Nagengast, Benjamin

    2015-01-01

    Expectancy-value theory (Eccles et al., 1983) is a prominent approach to explaining gender differences in math-related academic choices, with value beliefs acting as an important explanatory factor. Expectancy-value theory defines 4 value components: intrinsic value, attainment value, utility value, and cost. The present study followed up on…

  18. Neural correlates of rhythmic expectancy

    Directory of Open Access Journals (Sweden)

    Theodore P. Zanto

    2006-01-01

    Full Text Available Temporal expectancy is thought to play a fundamental role in the perception of rhythm. This review summarizes recent studies that investigated rhythmic expectancy by recording neuroelectric activity with high temporal resolution during the presentation of rhythmic patterns. Prior event-related brain potential (ERP studies have uncovered auditory evoked responses that reflect detection of onsets, offsets, sustains,and abrupt changes in acoustic properties such as frequency, intensity, and spectrum, in addition to indexing higher-order processes such as auditory sensory memory and the violation of expectancy. In our studies of rhythmic expectancy, we measured emitted responses - a type of ERP that occurs when an expected event is omitted from a regular series of stimulus events - in simple rhythms with temporal structures typical of music. Our observations suggest that middle-latency gamma band (20-60 Hz activity (GBA plays an essential role in auditory rhythm processing. Evoked (phase-locked GBA occurs in the presence of physically presented auditory events and reflects the degree of accent. Induced (non-phase-locked GBA reflects temporally precise expectancies for strongly and weakly accented events in sound patterns. Thus far, these findings support theories of rhythm perception that posit temporal expectancies generated by active neural processes.

  19. Expectations in Incremental Discourse Processing

    CERN Document Server

    Cristea, D; Cristea, Dan; Webber, Bonnie Lynn

    1997-01-01

    The way in which discourse features express connections back to the previous discourse has been described in the literature in terms of adjoining at the right frontier of discourse structure. But this does not allow for discourse features that express expectations about what is to come in the subsequent discourse. After characterizing these expectations and their distribution in text, we show how an approach that makes use of substitution as well as adjoining on a suitably defined right frontier, can be used to both process expectations and constrain discouse processing in general.

  20. When feeling bad is expected to be good: emotion regulation and outcome expectancies in social conflicts.

    Science.gov (United States)

    Tamir, Maya; Ford, Brett Q

    2012-08-01

    According to the instrumental approach to emotion regulation, people may want to experience even unpleasant emotions to attain instrumental benefits. Building on value-expectancy models of self-regulation, we tested whether people want to feel bad in certain contexts specifically because they expect such feelings to be useful to them. In two studies, participants were more likely to try to increase their anger before a negotiation when motivated to confront (vs. collaborate with) a negotiation partner. Participants motivated to confront (vs. collaborate with) their partner expected anger to be more useful to them, and this expectation in turn, led them to try to increase their anger before negotiating. The subsequent experience of anger, following random assignment to emotion inductions (Study 1) or engagement in self-selected emotion regulation activities (Study 2), led participants to be more successful at getting others to concede to their demands, demonstrating that emotional preferences have important pragmatic implications.

  1. The Prediction Value

    NARCIS (Netherlands)

    Koster, M.; Kurz, S.; Lindner, I.; Napel, S.

    2013-01-01

    We introduce the prediction value (PV) as a measure of players’ informational importance in probabilistic TU games. The latter combine a standard TU game and a probability distribution over the set of coalitions. Player i’s prediction value equals the difference between the conditional expectations

  2. 儿童感知父母运动投入程度对教养方式与儿童运动期望-价值信念的调节作用%Moderating effect of children' s perceptions quality of parental involvement on parenting style and children' s sport expectancy-value beliefs

    Institute of Scientific and Technical Information of China (English)

    许欣; 杨剑

    2013-01-01

    Objective To investigate the moderator of children' s perceptions quality of parental involvement on parenting style and children' s sport expectancy-value beliefs.Methods 595 students of grade 2 to 6 from five elementary schools were chosen and analyzed.Data were analyzed by SPSS16.0 software packet using independent sample t test,One-Way ANOVA,correlation analysis and hierarchical regression statistical analysis of regulation.Results Children' s expectancy beliefs was predicted by authoritarian and behavior encouragement(β=0.076,t =2.35,P=0.019 ;β =0.111,t =3.748,P =0.000).Children' s value beliefs was predicted by affect -warmed and behavior encouragement (β =0.070,t =2.883,P =0.004 ;β =0.070,t =2.745,P =0.006).Children' s sport behavior was predicted by trust-encouragement(β=0.294,t=3.193,P=0.001).The prediction of expectancy beliefs was significant positive by the interaction between indulgence and time involvement (β=0.078,t =2.065,P =0.039).The prediction of expectancy beliefs was significant negative by the interaction between authoritarian and time involvement(β=-0.084,t =-2.454,P=0.014).The prediction of expectancy beliefs was borderline significant positive by the interaction between neglecting and equipment provision(β=0.073,t =1.94,P =0.053).Conclusion Different parenting styles are significant predicators of children sport involvement.Children' s perceptions quality of parental involvement play an important role on parenting style and children' s sport expectancy-value beliefs.%目的 探讨教养方式在儿童感知父母运动投入程度的调节作用下对儿童运动期望-价值信念的影响.方法 以北京市、福建省、江西省、河北省5所小学595名小学生为被试进行问卷调查,采用独立样本t检验、单因素方差、相关和调节层级回归进行统计分析.结果 专制型教养方式、父母行为鼓励对儿童期望信念具有正向预测作用(β=0.076,t=2.35,P=0.019;β=0.111,t=3.748,P=0.000);

  3. Expecting a Stock Market Recovery

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    Abundant liquidity is expected to be the mainstay that helps to prop up the nation’s stock markets, according to the Economic Information Daily’s review of financial institutions’ research reports. Excerpts follow.

  4. Physical activity extends life expectancy

    Science.gov (United States)

    Leisure-time physical activity is associated with longer life expectancy, even at relatively low levels of activity and regardless of body weight, according to a study by a team of researchers led by the NCI.

  5. Dialysis centers -- what to expect

    Science.gov (United States)

    ... F (38.0°C) The arm where your catheter is placed swells and the hand on that side feels cold Your hand gets ... kidneys - dialysis centers; Dialysis - what to expect; Renal replacement therapy - ...

  6. Life expectancy in bipolar disorder

    DEFF Research Database (Denmark)

    Kessing, Lars Vedel; Vradi, Eleni; Andersen, Per Kragh

    2015-01-01

    OBJECTIVE: Life expectancy in patients with bipolar disorder has been reported to be decreased by 11 to 20 years. These calculations are based on data for individuals at the age of 15 years. However, this may be misleading for patients with bipolar disorder in general as most patients have a later...... onset of illness. The aim of the present study was to calculate the remaining life expectancy for patients of different ages with a diagnosis of bipolar disorder. METHODS: Using nationwide registers of all inpatient and outpatient contacts to all psychiatric hospitals in Denmark from 1970 to 2012 we...... remaining life expectancy in bipolar disorder and that of the general population decreased with age, indicating that patients with bipolar disorder start losing life-years during early and mid-adulthood. CONCLUSIONS: Life expectancy in bipolar disorder is decreased substantially, but less so than previously...

  7. Are CEOs Expected Utility Maximizers?

    OpenAIRE

    John List; Charles Mason

    2009-01-01

    Are individuals expected utility maximizers? This question represents much more than academic curiosity. In a normative sense, at stake are the fundamental underpinnings of the bulk of the last half-century's models of choice under uncertainty. From a positive perspective, the ubiquitous use of benefit-cost analysis across government agencies renders the expected utility maximization paradigm literally the only game in town. In this study, we advance the literature by exploring CEO's preferen...

  8. Neural correlates of rhythmic expectancy

    OpenAIRE

    Zanto, Theodore P.; Snyder, Joel S.; Large, Edward W.

    2006-01-01

    Temporal expectancy is thought to play a fundamental role in the perception of rhythm. This review summarizes recent studies that investigated rhythmic expectancy by recording neuroelectric activity with high temporal resolution during the presentation of rhythmic patterns. Prior event-related brain potential (ERP) studies have uncovered auditory evoked responses that reflect detection of onsets, offsets, sustains,and abrupt changes in acoustic properties such as frequency, intensity, and spe...

  9. Combined expectancies: electrophysiological evidence for the adjustment of expectancy effects

    Directory of Open Access Journals (Sweden)

    Münte Thomas F

    2006-05-01

    Full Text Available Abstract Background When subjects use cues to prepare for a likely stimulus or a likely response, reaction times are facilitated by valid cues but prolonged by invalid cues. In studies on combined expectancy effects, two cues can independently give information regarding two dimensions of the forthcoming task. In certain situations, cueing effects on one dimension are reduced when the cue on the other dimension is invalid. According to the Adjusted Expectancy Model, cues affect different processing levels and a mechanism is presumed which is sensitive to the validity of early level cues and leads to online adjustment of expectancy effects at later levels. To examine the predictions of this model cueing of stimulus modality was combined with response cueing. Results Behavioral measures showed the interaction of cueing effects. Electrophysiological measures of the lateralized readiness potential (LRP and the N200 amplitude confirmed the predictions of the model. The LRP showed larger effects of response cues on response activation when modality cues were valid rather than invalid. N200 amplitude was largest with valid modality cues and invalid response cues, medium with invalid modality cues, and smallest with two valid cues. Conclusion Findings support the view that the validity of early level expectancies modulates the effects of late level expectancies, which included response activation and response conflict in the present study.

  10. The relationship among expectation, perceived quality-value and satisfaction: A study on undergraduate students of tourismBeklenti, algılanan kalite-değer ve memnuniyet ilişkisi: Turizm lisans öğrencileri üzerine bir uygulama

    Directory of Open Access Journals (Sweden)

    Şirvan Şen Demir

    2013-02-01

    Full Text Available The main purpose of this study is (1 to analyze the relationship among corporate image, student expectations, perceived quality/value and satisfaction, (2 to determine the effects of external and internal factors on student satisfaction. Questionnaire for this study was developed from prior researches on a 5-point Likert-type. Through conducting a face-to-face interview, a total of 362 questionnaires were collected from students at the tourism department of a state university. LISREL 8.80 was used to analyze the data in context of Structural Equation Modelling (SEM that includes Exploratory Factor Analysis (EFA and Confirmatory Factor Analysis (CFA. As a result, the findings indicate that all factors have positive correlation each other. On the other hand, corporate image, student expectations, perceived quality/value have crucial impact on student satisfaction. Özet Bu çalışmanın temel amacı, (1 kurumsal imaj ile yükseköğretim kurumlarında okuyan öğrencilerin beklenti, algılanan kalite/değer ve memnuniyet ilişkisini ortaya koymak, (2 dışsal ve içsel faktörlerin öğrenci memnuniyeti üzerindeki etkisini belirlemektir. Daha önce yapılmış çalışmalardan elde edilen bilgilerden bir anket geliştirilmiştir. Bir devlet üniversitesinde turizm eğitimi alan öğrencilerle yüz yüze görüşme yöntemi ile 362 adet anket formu toplanmıştır. Verilere Yapısal Eşitlik Modeli (YEMkapsamında LISREL 8.80 istatistik programı kullanılarak Açıklayıcı Faktör Analizi (AFA ve Doğrulayıcı Faktör Analizi (DFA uygulanmıştır. Sonuçta tüm faktörlerin birbiri ile pozitif yönlü bir ilişkisi olduğu belirlenmiştir. diğer yandan kurumsal imaj, öğrenci beklentileri, algılanan kalite ve algılanan değerin öğrenci memnuniyeti üzerinde önemli bir etkisinin olduğu ortaya konulmuştur

  11. Burn Patient Expectations from Nurses

    Directory of Open Access Journals (Sweden)

    Sibel Yilmaz sahin

    2014-02-01

    Full Text Available AIM: Burn is a kind of painful trauma that requires a long period of treatment and also changes patients body image. For this reason, nursing care of burn patients is very important. In this study in order to provide qualified care to the burned patients, patient and #8217;s expectations from nurses were aimed to be established. METHODS: Patients and #8217; expectations were evaluated on 101 patients with burn in Ministry of Health Ankara Numune Education and Research Hospital Burn Service and Gulhane Military Medical Academy Education and Research Hospital Burn Center. A questionnaire which was developed by the researchers was used for collecting data. The questions on the questionnaire were classified into four groups to evaluate the patients and #8217; expectations about communication, information, care and discharge. Data was evaluated by using SPSS 12 package software. RESULTS: In this study, 48.5% of patients were at 18-28 age group, 79.2% were male and 51.5% of patients were employed. Almost all of patients expect nurses to give them confidence (98% and to give them information about latest developments with the disease. Patients prior expectation from nurses about care was to do their treatments regularly (100% and to take the necessary precautions in order to prevent infection (100%. 97% of patient expect nurses to give them information about the drugs, materials and equipment that they are going to use while discharge. CONCLUSION: As a result we found that burn patient expectations from nurses about communication, information, care and discharge were high. [TAF Prev Med Bull 2014; 13(1.000: 37-46

  12. Academic Expectations as Sources of Stress in Asian Students

    Science.gov (United States)

    Tan, Joyce Beiyu; Yates, Shirley

    2011-01-01

    Education is highly valued in Confucian Heritage Culture (CHC) countries such as China, Taiwan, Singapore, Hong Kong, Japan and Korea but the expectations of parents, teachers and students themselves to excel academically can also be a source of intense stress for many students. The "Academic Expectations Stress Inventory" (AESI),…

  13. Academic Expectations as Sources of Stress in Asian Students

    Science.gov (United States)

    Tan, Joyce Beiyu; Yates, Shirley

    2011-01-01

    Education is highly valued in Confucian Heritage Culture (CHC) countries such as China, Taiwan, Singapore, Hong Kong, Japan and Korea but the expectations of parents, teachers and students themselves to excel academically can also be a source of intense stress for many students. The "Academic Expectations Stress Inventory" (AESI), developed by Ang…

  14. Academic Expectations as Sources of Stress in Asian Students

    Science.gov (United States)

    Tan, Joyce Beiyu; Yates, Shirley

    2011-01-01

    Education is highly valued in Confucian Heritage Culture (CHC) countries such as China, Taiwan, Singapore, Hong Kong, Japan and Korea but the expectations of parents, teachers and students themselves to excel academically can also be a source of intense stress for many students. The "Academic Expectations Stress Inventory" (AESI),…

  15. The price of portfolio selection under tail conditional expectation with ...

    African Journals Online (AJOL)

    The price of portfolio selection under tail conditional expectation with consumption cost and transaction cost. ... Log in or Register to get access to full text downloads. ... Asset-liability control; Value-at-risk; consumption cost; Transaction costs.

  16. ANALYSIS OF EXPECTED AND NON-EXPECTED IMPACTS OF INTEREST RATE, EXCHANGE RATE AND INFLATION IN BRAZILIAN MARKET

    Directory of Open Access Journals (Sweden)

    Marcelo Brutti Righi

    2012-05-01

    Full Text Available This paper examined the expected and non-expected impacts for interest rates, exchange and inflation rates in the Brazilian market. For this purpose, was applied the ARIMA model to estimate the expected value of the first differences of these variables, under a sample of 383 weekly observations for the period from 02/03/2003 to 19/12/2007. Finally, the results indicate that only unexpected shocks in the exchange rate on stock returns were significant.

  17. Test expectancy affects metacomprehension accuracy.

    Science.gov (United States)

    Thiede, Keith W; Wiley, Jennifer; Griffin, Thomas D

    2011-06-01

    Theory suggests that the accuracy of metacognitive monitoring is affected by the cues used to judge learning. Researchers have improved monitoring accuracy by directing attention to more appropriate cues; however, this is the first study to more directly point students to more appropriate cues using instructions regarding tests and practice tests. The purpose of the present study was to examine whether the accuracy metacognitive monitoring was affected by the nature of the test expected. Students (N= 59) were randomly assigned to one of two test expectancy groups (memory vs. inference). Then after reading texts, judging learning, completed both memory and inference tests. Test performance and monitoring accuracy were superior when students received the kind of test they had been led to expect rather than the unexpected test. Tests influence students' perceptions of what constitutes learning. Our findings suggest that this could affect how students prepare for tests and how they monitoring their own learning. ©2010 The British Psychological Society.

  18. Expectations for a scientific collaboratory

    DEFF Research Database (Denmark)

    Sonnenwald, Diane H.

    2003-01-01

    with respect to scientific collaboratories. Interviews were conducted with 17 scientists who work in a variety of settings and have a range of experience conducting and managing scientific research. Results indicate that scientists expect a collaboratory to: support their strategic plans; facilitate management......In the past decade, a number of scientific collaboratories have emerged, yet adoption of scientific collaboratories remains limited. Meeting expectations is one factor that influences adoption of innovations, including scientific collaboratories. This paper investigates expectations scientists have...... of the scientific process; have a positive or neutral impact on scientific outcomes; provide advantages and disadvantages for scientific task execution; and provide personal conveniences when collaborating across distances. These results both confirm existing knowledge and raise new issues for the design...

  19. Expectations for a scientific collaboratory

    DEFF Research Database (Denmark)

    Sonnenwald, Diane H.

    2003-01-01

    with respect to scientific collaboratories. Interviews were conducted with 17 scientists who work in a variety of settings and have a range of experience conducting and managing scientific research. Results indicate that scientists expect a collaboratory to: support their strategic plans; facilitate management......In the past decade, a number of scientific collaboratories have emerged, yet adoption of scientific collaboratories remains limited. Meeting expectations is one factor that influences adoption of innovations, including scientific collaboratories. This paper investigates expectations scientists have...... of the scientific process; have a positive or neutral impact on scientific outcomes; provide advantages and disadvantages for scientific task execution; and provide personal conveniences when collaborating across distances. These results both confirm existing knowledge and raise new issues for the design...

  20. Expectations and experiences of temporarily studying abroad

    Directory of Open Access Journals (Sweden)

    Per A. Nilsson

    2013-01-01

    Full Text Available This tentative study focuses on the experiences of outbound exchange students and underlines the international relations component among contemporary universities. The aim is to investigate to what extent the expectations of outbound exchange students are being met in a population of students who had temporarily studied abroad. In this study, Umeå University, Sweden, is used as a case. The study was inspired by Plog’s studies (1974, 2001 in the field of tourism and hospitality research. Exchange students show similarities with tourists when it comes to choosing study destinations. This study partially confirms Plog’s model. Students who are outgoing and self-confident seem to choose non-English speaking countries. In addition, this study highlights what incentives students have, to become exchange students and most importantly how they value this experience. The respondents had positive expectations before departing as exchange students and they returned with even more positive attitudes.

  1. Privacy Expectations in Online Contexts

    Science.gov (United States)

    Pure, Rebekah Abigail

    2013-01-01

    Advances in digital networked communication technology over the last two decades have brought the issue of personal privacy into sharper focus within contemporary public discourse. In this dissertation, I explain the Fourth Amendment and the role that privacy expectations play in the constitutional protection of personal privacy generally, and…

  2. Career Expectations of Accounting Students

    Science.gov (United States)

    Elam, Dennis; Mendez, Francis

    2010-01-01

    The demographic make-up of accounting students is dramatically changing. This study sets out to measure how well the profession is ready to accommodate what may be very different needs and expectations of this new generation of students. Non-traditional students are becoming more and more of a tradition in the current college classroom.…

  3. Expected utility with lower probabilities

    DEFF Research Database (Denmark)

    Hendon, Ebbe; Jacobsen, Hans Jørgen; Sloth, Birgitte

    1994-01-01

    An uncertain and not just risky situation may be modeled using so-called belief functions assigning lower probabilities to subsets of outcomes. In this article we extend the von Neumann-Morgenstern expected utility theory from probability measures to belief functions. We use this theory...

  4. Life Expectancy of Kibbutz Members.

    Science.gov (United States)

    Leviatan, Uri; And Others

    1986-01-01

    Data are presented demonstrating that the life expectancy of kibbutz members--both men and women--is higher than that of the overall Jewish population in Israel. These data add to and support other research findings illustrating the more positive mental health and well-being found among kibbutz members than among other comparative populations.…

  5. Primary expectations of secondary metabolites

    Science.gov (United States)

    My program examines the plant secondary metabolites (i.e. phenolics) important for human health, and which impart the organoleptic properties that are quality indicators for fresh and processed foods. Consumer expectations such as appearance, taste, or texture influence their purchasing decisions; a...

  6. Expectation Propagation for Exponential Families

    OpenAIRE

    Seeger, Matthias

    2005-01-01

    This is a tutorial describing the Expectation Propagation (EP) algorithm for a general exponential family. Our focus is on simplicity of exposition. Although the overhead of translating a specific model into its exponential family representation can be considerable, many apparent complications of EP can simply be sidestepped by working in this canonical representation.

  7. Metaphors As Storehouses of Expectation.

    Science.gov (United States)

    Beavis, Allan K.; Thomas, A. Ross

    1996-01-01

    Explores how metaphors are used to identify and store some expectations that structure schools' interactions and communications. Outlines a systems-theoretical view of schools derived from Niklas Luhmann's social theories. Illustrates how the metaphors identified in an earlier study provide material contexts for identifying and storing structures…

  8. Self-Averaging Expectation Propagation

    DEFF Research Database (Denmark)

    Cakmak, Burak; Opper, Manfred; Fleury, Bernard Henri

    We investigate the problem of approximate inference using Expectation Propagation (EP) for large systems under some statistical assumptions. Our approach tries to overcome the numerical bottleneck of EP caused by the inversion of large matrices. Assuming that the measurement matrices are realizat...... on a signal recovery problem of compressed sensing and compare with standard EP....

  9. Education: Expectation and the Unexpected

    Science.gov (United States)

    Fulford, Amanda

    2016-01-01

    This paper considers concepts of expectation and responsibility, and how these drive dialogic interactions between tutor and student in an age of marketised Higher Education. In thinking about such interactions in terms of different forms of exchange, the paper considers the philosophy of Martin Buber and Emmanuel Levinas on dialogic…

  10. Privacy Expectations in Online Contexts

    Science.gov (United States)

    Pure, Rebekah Abigail

    2013-01-01

    Advances in digital networked communication technology over the last two decades have brought the issue of personal privacy into sharper focus within contemporary public discourse. In this dissertation, I explain the Fourth Amendment and the role that privacy expectations play in the constitutional protection of personal privacy generally, and…

  11. Life Expectancy of Kibbutz Members.

    Science.gov (United States)

    Leviatan, Uri; And Others

    1986-01-01

    Data are presented demonstrating that the life expectancy of kibbutz members--both men and women--is higher than that of the overall Jewish population in Israel. These data add to and support other research findings illustrating the more positive mental health and well-being found among kibbutz members than among other comparative populations.…

  12. Expectations and retail profit margins

    NARCIS (Netherlands)

    R.G.J. den Hertog; A.R. Thurik (Roy)

    1992-01-01

    textabstractIn this study expectations and prediction errors are introduced in the context of retail price setting. A new model and a new data set are used to examine whether prediction errors influence retail price setting, whether prediction errors cause only limited price changes to maintain pric

  13. Corporate diversification: expectations and outcomes.

    Science.gov (United States)

    Clement, J P

    1988-01-01

    A review of the research concerning the diversification experience of firms in other industries shows that expectations of higher profit rates and lower risk are not entirely realistic. However, there are many ways in which the probability of financially successful diversification may be increased.

  14. Great Expectations and New Beginnings

    Science.gov (United States)

    Davis, Frances A.

    2009-01-01

    Great Expectation and New Beginnings is a prenatal family support program run by the Family, Infant, and Preschool Program (FIPP) in North Carolina. FIPP has developed an evidence-based integrated framework of early childhood intervention and family support that includes three primary components: providing intervention in everyday family…

  15. Subjective ambiguity, expected utility and Choquet expected utility

    OpenAIRE

    Jiankang Zhang

    2002-01-01

    Using the Savage set up, this paper provides a simple axiomatization of the Choquet Expected Utility model where the capacity is an inner measure. Two attractive features of the model are its specificity and the transparency of its axioms. The key axiom states that the decision-maker uses unambiguous acts to approximate ambiguous ones. In addition, the notion of `ambiguity' is subjective and derived from preferences.

  16. Predicting the Expected Rate of Change

    Institute of Scientific and Technical Information of China (English)

    吴梦想

    2016-01-01

    Since December 2013,Ebola outbreak in west Africa again, and the year's disease was the most serious Ebola serious, which arouse the global attention. We are consider that among the countries where outbreak Ebola disease, Nigeria has the most serious problem. So we choose Nigeria as our object, establish differential equation and take the initial value to calculate, expecting rate of change in the number of Ebola infections for the country from 2006 to 2015, in the absence of any additional drugs. Clearly giving the inspecting time, we can get the change of the number of healthy people and the patients.

  17. The construction of normal expectations

    DEFF Research Database (Denmark)

    Quitzau, Maj-Britt; Røpke, Inge

    2008-01-01

    The gradual upward changes of standards in normal everyday life have significant environmental implications, and it is therefore important to study how these changes come about. The intention of the article is to analyze the social construction of normal expectations through a case study. The case...... concerns the present boom in bathroom renovations in Denmark, which offers an excellent opportunity to study the interplay between a wide variety of consumption drivers and social changes pointing toward long-term changes of normal expectations regarding bathroom standards. The study is problemoriented...... and transdisciplinary and draws on a wide range of sociological, anthropological, and economic theories. The empirical basis comprises a combination of statistics, a review of magazine and media coverage, visits to exhibitions, and qualitative interviews. A variety of consumption drivers are identified. Among...

  18. Critical Realism in Great Expectations

    Institute of Scientific and Technical Information of China (English)

    姚雪莲

    2014-01-01

    Great Expectations is an important work by English novelist Dickens.His novels not only reflect the life experience of a whole generation genuinely,but also disclose the social reality vividly in England in the middle 19th century.Its depth and width go beyond most of the works of his contemporaries.Great Expectations is the excellent novel of critical realism in the later period of Dickens.It describes the de-velopment of Pip’s grown-up and the disillusion of his“great expectations”.Educated by the reality,he came to realize what he pursued in the Vanity Fair was not valuable at all.So as to see clearer the great power of critical realism in Dickens’works and thus can understand the no-vel,this thesis analyzes the hero’s character development and the influential factors upon the formation of his character.

  19. Asynchronous Bounded Expected Delay Networks

    CERN Document Server

    Bakhshi, Rena; Fokkink, Wan; Pang, Jun

    2010-01-01

    The commonly used asynchronous bounded delay (ABD) network models assume a fixed bound on message delay. We propose a probabilistic network model, called asynchronous bounded expected delay (ABE) model. Instead of a strict bound, the ABE model requires only a bound on the expected message delay. While the conditions of ABD networks restrict the set of possible executions, in ABE networks all asynchronous executions are possible, but executions with extremely long delays are less probable. In contrast to ABD networks, ABE networks cannot be synchronised efficiently. At the example of an election algorithm, we show that the minimal assumptions of ABE networks are sufficient for the development of efficient algorithms. For anonymous, unidirectional ABE rings of known size N we devise a probabilistic leader election algorithm having average message and time complexity O(N).

  20. Youth expectations in job search in Serbia

    Directory of Open Access Journals (Sweden)

    Pavlović Dejana

    2016-01-01

    Full Text Available Youth on the labour market in developing countries such as Serbia, Macedonia, Bosnia and Herzegovina are facing numerous difficulties, with almost a half of their population aged between 15 -24 not working or working in informal sector. The reasons may be numerous. The financial crisis and the low economic development of the country have had negative impact on young generations and this resulted in lack of sufficient jobs vacancies. In addition, the reasons for their slow entry into the labour market could be the lack of experience, low education among young people etc. Although employers have certain expectations of young people, once they enter the labour market young people have certain values that are important for them when choosing a job. The paper presents the research on the expectations of young people entering labour market in the Republic of Serbia. According to survey results based on analyses of youth' expectations and preferences in Serbia regarding potential work conditions, authors have by the means of factor analysis identified which groups of factors are the most important for young people ages between 16 and 30 in job finding in Serbia. The results showed that there is a significance of three questions: 1. Job does not affect the private life; 2. Work resources are provided; 3. Work is safe. In conclusion, if a company ensures that these three issues are regulated, it will more likely employ young professionals.

  1. Rising Expectations, Social Unrest & Development

    Directory of Open Access Journals (Sweden)

    Ashok Natarajan

    2011-10-01

    Full Text Available The relationship between peace and development holds the key to effective strategies for addressing the roots of social unrest. Rising expectations are the principal driving force for social development. However, the faster and higher aspirations rise, the greater the gap between expectations and reality. That gap promotes a sense of frustration, depravation and aggression leading to social unrest and violence. The opposite is also true: rising economic opportunity can mitigate or eliminate social unrest. The remarkable renunciation of armed struggle by the IRA in North Ireland in mid - 2005 appears inexplicable until the impact of rising incomes and expanding employment opportunities in the Republic of Ireland is also taken into account. A similar approach can be applied to address the problems of violence and social unrest in Kashmir and Palestine. Here too apparently intractable conflicts will lend themselves to be addressed economically. India's recent efforts to provide guaranteed employment to its rural poor are part of a strategy to stem the rising tide of social unrest in impoverished areas resulting from rising expectations among the poor.

  2. A Theory of False Cognitive Expectancies in Airline Pilots

    Science.gov (United States)

    Cortes, Antonio I.

    The Theory of False Cognitive Expectancies was developed by studying high reliability flight operations. Airline pilots depend extensively on cognitive expectancies to perceive, understand, and predict actions and events. Out of 1,363 incident reports submitted by airline pilots to the National Aeronautics and Space Administration Aviation Safety Reporting System over a year's time, 110 reports were found to contain evidence of 127 false cognitive expectancies in pilots. A comprehensive taxonomy was developed with six categories of interest. The dataset of 127 false expectancies was used to initially code tentative taxon values for each category. Intermediate coding through constant comparative analysis completed the taxonomy. The taxonomy was used for the advanced coding of chronological context-dependent visualizations of expectancy factors, known as strands, which depict the major factors in the creation and propagation of each expectancy. Strands were mapped into common networks to detect highly represented expectancy processes. Theoretical integration established 11 sources of false expectancies, the most common expectancy errors, and those conspicuous factors worthy of future study. The most prevalent source of false cognitive expectancies within the dataset was determined to be unconscious individual modeling based on past events. Integrative analyses also revealed relationships between expectancies and flight deck automation, unresolved discrepancies, and levels of situation awareness. Particularly noteworthy were the findings that false expectancies can combine in three possible permutations to diminish situation awareness and examples of how false expectancies can be unwittingly transmitted from one person to another. The theory resulting from this research can enhance the error coding process used during aircraft line oriented safety audits, lays the foundation for developing expectancy management training programs, and will allow researchers to proffer

  3. Adding more value to added-value

    DEFF Research Database (Denmark)

    Marian, Livia

    regulation. The results of a qualitative concept test reveal positive attitudes towards the proposed production process. The discussions about fewer standards being sufficient or about options “in-between” conventional and organic standards indicate that the difference in production processes is noticed, yet...... it is probably valued less than expected. The added attributes need to be thoroughly considered when developing and marketing “organic plus” products, as their effect on other product characteristics (e.g. high prices) can detract from their added value....

  4. Public Values

    DEFF Research Database (Denmark)

    Beck Jørgensen, Torben; Rutgers, Mark R.

    2015-01-01

    administration is approached in terms of processes guided or restricted by public values and as public value creating: public management and public policy-making are both concerned with establishing, following and realizing public values. To study public values a broad perspective is needed. The article suggest......This article provides the introduction to a symposium on contemporary public values research. It is argued that the contribution to this symposium represent a Public Values Perspective, distinct from other specific lines of research that also use public value as a core concept. Public...... a research agenda for this encompasing kind of public values research. Finally the contributions to the symposium are introduced....

  5. Career Expectations and Perceptions of Part-Time MBA Students

    Science.gov (United States)

    Fish, Lynn A.; Fish, Lauren A.

    2010-01-01

    In the U.S., part-time MBA students regard work/life balance as the critical factor that drives career expectations and perceptions. Job aspects and benefits/compensation closely follow in importance, while employee relations are valued less. Within work/life balance, students value job location, travel time, and telecommuting. Promotional…

  6. Bubbles and crashes in house prices under heterogeneous expectations

    NARCIS (Netherlands)

    W. Bolt; M. Demertzis; C. Diks; C. Hommes; M. van der Leij

    2013-01-01

    We introduce heterogeneous expectations in a standard housing market model linking housing rental levels to buying prices via imputed rents. The resulting model displays nonlinear aggregate price fluctuations around the fundamental value. For many parameter values the fundamental price is unstable,

  7. Motivational beliefs, values, and goals.

    Science.gov (United States)

    Eccles, Jacquelynne S; Wigfield, Allan

    2002-01-01

    This chapter reviews the recent research on motivation, beliefs, values, and goals, focusing on developmental and educational psychology. The authors divide the chapter into four major sections: theories focused on expectancies for success (self-efficacy theory and control theory), theories focused on task value (theories focused on intrinsic motivation, self-determination, flow, interest, and goals), theories that integrate expectancies and values (attribution theory, the expectancy-value models of Eccles et al., Feather, and Heckhausen, and self-worth theory), and theories integrating motivation and cognition (social cognitive theories of self-regulation and motivation, the work by Winne & Marx, Borkowski et al., Pintrich et al., and theories of motivation and volition). The authors end the chapter with a discussion of how to integrate theories of self-regulation and expectancy-value models of motivation and suggest new directions for future research.

  8. The value of reliability

    DEFF Research Database (Denmark)

    Fosgerau, Mogens; Karlström, Anders

    2010-01-01

    We derive the value of reliability in the scheduling of an activity of random duration, such as travel under congested conditions. Using a simple formulation of scheduling utility, we show that the maximal expected utility is linear in the mean and standard deviation of trip duration, regardless...

  9. Primary Care Clinician Expectations Regarding Aging

    Science.gov (United States)

    Davis, Melinda M.; Bond, Lynne A.; Howard, Alan; Sarkisian, Catherine A.

    2011-01-01

    Purpose: Expectations regarding aging (ERA) in community-dwelling older adults are associated with personal health behaviors and health resource usage. Clinicians' age expectations likely influence patients' expectations and care delivery patterns; yet, limited research has explored clinicians' age expectations. The Expectations Regarding Aging…

  10. Pakistan-beyond your expectation

    Institute of Scientific and Technical Information of China (English)

    Jason Liu

    2004-01-01

    <正> Few Westerners know much about Pakistan beyond media reports of Islamic fundamentalism, communal violence and martial law, but it contains some of Asia’s most mind-blowing landscapes, extraordinary trekking opportunities, a multitude of cultures and a long tradition of hospitality.The China’s neighbouring country is the site of some of the earliest human settlements, home to an ancient civilisation rivalling those of Egypt and Mesopotamia, and the crucible of two of the world’s major religions, Hinduism and Buddhism. You’ll surely get more than what you expected there. .

  11. Covariance structure models of expectancy.

    Science.gov (United States)

    Henderson, M J; Goldman, M S; Coovert, M D; Carnevalla, N

    1994-05-01

    Antecedent variables under the broad categories of genetic, environmental and cultural influences have been linked to the risk for alcohol abuse. Such risk factors have not been shown to result in high correlations with alcohol consumption and leave unclear an understanding of the mechanism by which these variables lead to increased risk. This study employed covariance structure modeling to examine the mediational influence of stored information in memory about alcohol, alcohol expectancies in relation to two biologically and environmentally driven antecedent variables, family history of alcohol abuse and a sensation-seeking temperament in a college population. We also examined the effect of criterion contamination on the relationship between sensation-seeking and alcohol consumption. Results indicated that alcohol expectancy acts as a significant, partial mediator of the relationship between sensation-seeking and consumption, that family history of alcohol abuse is not related to drinking outcome and that overlap in items on sensation-seeking and alcohol consumption measures may falsely inflate their relationship.

  12. Regulatory Expectations for Safety Culture

    Energy Technology Data Exchange (ETDEWEB)

    Jung, Su Jin; Oh, Jang Jin; Choi, Young Sung [Korea Institute of Nuclear Safety, Daejeon (Korea, Republic of)

    2014-05-15

    The oversight of licensee's safety culture becomes an important issue that attracts great public and political concerns recently in Korea. Beginning from the intended violation of rules, a series of corruptions, documents forgery and disclosure of wrong-doings made the public think that the whole mindset of nuclear workers has been inadequate. Thus, they are demanding that safety culture shall be improved and that regulatory body shall play more roles and responsibilities for the improvements and oversight for them. This paper introduces, as an effort of regulatory side, recent changes in the role of regulators in safety culture, regulatory expectations on the desired status of licensee's safety culture, the pilot inspection program for safety culture and research activity for the development of oversight system. After the Fukushima accident in Japan 2011, many critics has searched for cultural factors that caused the unacceptable negligence pervaded in Japan nuclear society and the renewed emphasis has been placed on rebuilding safety culture by operators, regulators, and relevant institutions globally. Significant progress has been made in how to approach safety culture and led to a new perspective different from the existing normative assessment method both in operators and regulatory side. Regulatory expectations and oversight of them are based on such a new holistic concept for human, organizational and cultural elements to maintain and strengthen the integrity of defense in depth and consequently nuclear safety.

  13. Primary Care Clinician Expectations Regarding Aging

    OpenAIRE

    Davis, Melinda M; Bond, Lynne A.; Howard, Alan; Sarkisian, Catherine A.

    2011-01-01

    Purpose: Expectations regarding aging (ERA) in community-dwelling older adults are associated with personal health behaviors and health resource usage. Clinicians’ age expectations likely influence patients’ expectations and care delivery patterns; yet, limited research has explored clinicians’ age expectations. The Expectations Regarding Aging Survey (ERA-12) was used to assess (a) age expectations in a sample of primary care clinicians practicing in the United States and (b) clinician chara...

  14. Deriving equity from expectations: A cross-cultural evaluation.

    Science.gov (United States)

    Melamed, David

    2012-01-01

    This paper develops and evaluates a new model for predicting just rewards. The model produces point predictions for individual just rewards based on status characteristics and the expected value of a valued good. The equity model borrows from Berger and colleagues' (1998) reward expectations theory the ability to define different reward expectations. Drawing from Melamed and Walker's (2010) recent generalization of the mathematics of reward expectations theory, I illustrate how the model generates a continuous distribution of just rewards. The general model is applied to data from thirteen countries using the International Social Justice Project. The results illustrate the predictive power of the model using data from over 10,000 respondents. Implications and future directions are discussed.

  15. FRANCHISE EXPECTATIONS: CASE OF KAZAKHSTAN

    Directory of Open Access Journals (Sweden)

    Raissa Kaziyeva

    2014-07-01

    Full Text Available The purpose of the article is to provide a critical review of franchising development in Kazakhstan by focusing on the relationship between the franchisor and the franchisee. We have conducted extensive research and communicated with lots of potential and existing Kazakhstani franchisors and franchisees, operating since 2003. Our findings show that the process of signing franchising agreements is quite challenging in Kazakhstan.  Thorough investigation of the differences between expectations and actual responsibilities from both two sides of franchising agreement allows us to overcome misconception and eliminate the aspirations of automatic success.  This article attempts to give practical implications for franchising development in Kazakhstan that will raise the effectiveness and enhance the credibility of franchising business through preliminary screening of subjective assumptions regarding franchising advantages and benefits, using a cross-comparative analysis, as well as provide recommendation to add addenda and clarifications to the agreement as necessary.

  16. MATISSE: specifications and expected performances

    CERN Document Server

    Matter, A; Petrov, R G; Berio, P; Robbe-Dubois, S; Lopez, B; Antonelli, P; Allouche, F; Cruzalebes, P; Millour, F; Bazin, G; Bourgès, L

    2016-01-01

    MATISSE (Multi AperTure mid-Infrared SpectroScopic Experiment) is the next generation spectro-interferometer at the European Southern Observatory VLTI operating in the spectral bands L, M and N, and combining four beams from the unit and auxiliary telescopes. MATISSE is now fully integrated at the Observatoire de la C\\^ote d'Azur in Nice (France), and has entered very recently its testing phase in laboratory. This paper summarizes the equations describing the MATISSE signal and the associated sources of noise. The specifications and the expected performances of the instrument are then evaluated taking into account the current characteristics of the instrument and the VLTI infrastructure, including transmission and contrast degradation budgets. In addition, we present the different MATISSE simulation tools that will be made available to the future users.

  17. [Manufactured baby food: safety expectations].

    Science.gov (United States)

    Davin, L; Van Egroo, L-D; Galesne, N

    2010-12-01

    Food safety is a concern for parents of infants, and healthcare professionals are often questioned by them about this topic. Baby food European regulation ensures high levels of safety and is more rigorous than common food regulation. Maximal limit for pesticides in baby food demonstrates the high level of requirements. This limit must be below the 10 ppb detection threshold, whatever the chemical used. Other contaminants such as nitrates are also the subject of greater expectations in baby food. Food safety risks control needs a specific know-how that baby food manufacturers have acquired and experienced, more particularly by working with producers of high quality raw material. Copyright © 2010 Elsevier Masson SAS. All rights reserved.

  18. Motor activity improves temporal expectancy.

    Directory of Open Access Journals (Sweden)

    Lilian Fautrelle

    Full Text Available Certain brain areas involved in interval timing are also important in motor activity. This raises the possibility that motor activity might influence interval timing. To test this hypothesis, we assessed interval timing in healthy adults following different types of training. The pre- and post-training tasks consisted of a button press in response to the presentation of a rhythmic visual stimulus. Alterations in temporal expectancy were evaluated by measuring response times. Training consisted of responding to the visual presentation of regularly appearing stimuli by either: (1 pointing with a whole-body movement, (2 pointing only with the arm, (3 imagining pointing with a whole-body movement, (4 simply watching the stimulus presentation, (5 pointing with a whole-body movement in response to a target that appeared at irregular intervals (6 reading a newspaper. Participants performing a motor activity in response to the regular target showed significant improvements in judgment times compared to individuals with no associated motor activity. Individuals who only imagined pointing with a whole-body movement also showed significant improvements. No improvements were observed in the group that trained with a motor response to an irregular stimulus, hence eliminating the explanation that the improved temporal expectations of the other motor training groups was purely due to an improved motor capacity to press the response button. All groups performed a secondary task equally well, hence indicating that our results could not simply be attributed to differences in attention between the groups. Our results show that motor activity, even when it does not play a causal or corrective role, can lead to improved interval timing judgments.

  19. Consumption-Wealth Ratio and Expected Housing Return

    OpenAIRE

    N. Kundan Kishor; Swati Kumari

    2014-01-01

    In this paper, we estimate expected return on housing by exploiting information from the variations in the consumption- wealth ratio. We combine a present-value model of consumption with an unobserved component model to express the excess consumption-assets ratio (consumption in excess of labor income) as a linear function of unobserved return on housing assets, financial assets, and consumption growth. We apply a Kalman filter to extract expected housing asset returns from the history of rea...

  20. [Expectations and patient satisfaction in hospitals: construction and application of an expectation-based experience typology and its use in the management of quality and expectations].

    Science.gov (United States)

    Gehrlach, Christoph; Güntert, Bernhard

    2015-01-01

    Patient satisfaction (PS) surveys are frequently used evaluation methods to show performance from the customer's view. This approach has some fundamental deficits, especially with respect to theory, methodology and usage. Because of the significant theoretical value of the expectation confirmation/disconfirmation concept in the development of PS, an expectation-based experience typology has been developed and tested to check whether this approach could be a theoretical and practical alternative to the survey of PS. Due to the mainly cognitive-rational process of comparison between expectations and expectation fulfilment, it is easier to make changes in this stage of the process than in the subsequent stage of the development of PS that is mainly based on emotional-affective processes. The paper contains a literature review of the common concept of PS and its causal and influencing factors. Based on the theoretical part of this study, an expectation-based experience typology was developed. In the next step, the typology was subjected to exploratory testing, based on two patient surveys. In some parts of the tested typology explorative differences could be found between hospitals. Despite this rather more complex and unusual approach to expectation-based experience typology, this concept offers the chance to change conditions not only retrospectively (based on data), but also in a prospective way in terms of a "management of expectations".

  1. Values Research

    Science.gov (United States)

    2009-10-01

    horizontal vs. vertical. • According to the theory of Planned Behavior ( Ajzen , 1988, 2002) attitude, subjective norms and perceived control...determines intention which may end in behavior . 7 Defining Human Values Cross-cultural theories on values emerged in the 80s developed by three main...attitudes with social structure. 4 Defining Human Values • According to Parsons (Parsons & Shils, 1951), values instigate behavior . • In line

  2. The expected anisotropy in solid inflation

    Energy Technology Data Exchange (ETDEWEB)

    Bartolo, Nicola; Ricciardone, Angelo [Dipartimento di Fisica e Astronomia ' ' G. Galilei' ' , Università degli Studi di Padova, via Marzolo 8, I-35131, Padova (Italy); Peloso, Marco; Unal, Caner, E-mail: nicola.bartolo@pd.infn.it, E-mail: peloso@physics.umn.edu, E-mail: angelo.ricciardone@pd.infn.it, E-mail: unal@physics.umn.edu [School of Physics and Astronomy, University of Minnesota, 116 Church Street S.E., Minneapolis 55455 (United States)

    2014-11-01

    Solid inflation is an effective field theory of inflation in which isotropy and homogeneity are accomplished via a specific combination of anisotropic sources (three scalar fields that individually break isotropy). This results in specific observational signatures that are not found in standard models of inflation: a non-trivial angular dependence for the squeezed bispectrum, and a possibly long period of anisotropic inflation (to drive inflation, the ''solid'' must be very insensitive to any deformation, and thus background anisotropies are very slowly erased). In this paper we compute the expected level of statistical anisotropy in the power spectrum of the curvature perturbations of this model. To do so, we account for the classical background values of the three scalar fields that are generated on large (superhorizon) scales during inflation via a random walk sum, as the perturbation modes leave the horizon. Such an anisotropy is unavoidably generated, even starting from perfectly isotropic classical initial conditions. The expected level of anisotropy is related to the duration of inflation and to the amplitude of the squeezed bispectrum. If this amplitude is close to its current observational limit (so that one of the most interesting predictions of the model can be observed in the near future), we find that a level of statistical anisotropy F{sup 2} gives frozen and scale invariant vector perturbations on superhorizon scales.

  3. Islamic finance: more expectations and less disappointment

    Directory of Open Access Journals (Sweden)

    Fayaz Ahmad Lone

    2017-03-01

    Full Text Available Islamic finance: more expectations and less disappointment Released On Friday, 31 March 2017 Author(s Fayaz Ahmad Lone\t, Siraj Ahmad DOI http://dx.doi.org/10.21511/imfi.14(1.2017.14 Article Info Volume 14 2017, Issue #1, pp. 134-141 TO CITE АНОТАЦІЯ 141 Views 424 Downloads Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License Islamic finance has faced a two-fold criticism from scholars; viz. constructive criticism and destructive criticism. Majority of the scholars criticize it with the intention to improve its overall development, but some scholars are more negative in their criticism. This paper proposes that Islamic banks (a component of Islamic finance are not charitable institutions, but are the intermediary institutions that take care of investors’ expectations to keep the time value and return to their investments intact with the market fluctuations. The purpose of this paper is to provide better insight about Islamic finance so as to further improve this industry to achieve its long term goals and serve the society better. The paper also attempts to answer some of the common allegations imposed by scholars towards Islamic finance.

  4. The expected anisotropy in solid inflation

    CERN Document Server

    Bartolo, Nicola; Ricciardone, Angelo; Unal, Caner

    2014-01-01

    Solid inflation is an effective field theory of inflation in which isotropy and homogeneity are accomplished via a specific combination of anisotropic sources (three scalar fields that individually break isotropy). This results in specific observational signatures that are not found in standard models of inflation: a non-trivial angular dependence for the squeezed bispectrum, and a possibly long period of anisotropic inflation (to drive inflation, the "solid" must be very insensitive to any deformation, and thus background anisotropies are very slowly erased). In this paper we compute the expected level of statistical anisotropy in the power spectrum of the curvature perturbations of this model. To do so, we account for the classical background values of the three scalar fields that are generated on large (superhorizon) scales during inflation via a random walk sum, as the perturbation modes leave the horizon. Such an anisotropy is unavoidably generated, even starting from perfectly isotropic classical initia...

  5. Expectations and disappointments of industrial innovations

    CERN Document Server

    Halevi, Gideon

    2017-01-01

    The Integrated Manufacturing System (IMS), Group Technology, Numerical Control, and Computer Aided Design (CAD) were four outstanding innovations that were one-time milestones of scientific industrial management. This book describes the expectations and disappointments of the common pitfalls of these ingenious ideas, which leads to understanding of their gradual disappearing, and proposes a way to restore these methods for long term utility and value. The first three innovations dominated the industry till the mid-1970s. Surprisingly, the reason for them being replaced is the same: research of the “routine” was misleading regardless of its ingenuity. In the fourth case, CAD does not support CAPP (Computer Aided Process Planning) and thus Numerical Control could no longer support developments of a system such as a flexible and automated factory. However, they incorporate many features in a specific resource instead within a manufacturing system. CAD technology and machining centers remain remarkable as a s...

  6. 10 CFR 63.304 - Reasonable expectation.

    Science.gov (United States)

    2010-01-01

    ... 10 Energy 2 2010-01-01 2010-01-01 false Reasonable expectation. 63.304 Section 63.304 Energy... Reasonable expectation. Reasonable expectation means that the Commission is satisfied that compliance will be achieved based upon the full record before it. Characteristics of reasonable expectation include that...

  7. Expectation-based syntactic comprehension.

    Science.gov (United States)

    Levy, Roger

    2008-03-01

    This paper investigates the role of resource allocation as a source of processing difficulty in human sentence comprehension. The paper proposes a simple information-theoretic characterization of processing difficulty as the work incurred by resource reallocation during parallel, incremental, probabilistic disambiguation in sentence comprehension, and demonstrates its equivalence to the theory of Hale [Hale, J. (2001). A probabilistic Earley parser as a psycholinguistic model. In Proceedings of NAACL (Vol. 2, pp. 159-166)], in which the difficulty of a word is proportional to its surprisal (its negative log-probability) in the context within which it appears. This proposal subsumes and clarifies findings that high-constraint contexts can facilitate lexical processing, and connects these findings to well-known models of parallel constraint-based comprehension. In addition, the theory leads to a number of specific predictions about the role of expectation in syntactic comprehension, including the reversal of locality-based difficulty patterns in syntactically constrained contexts, and conditions under which increased ambiguity facilitates processing. The paper examines a range of established results bearing on these predictions, and shows that they are largely consistent with the surprisal theory.

  8. CMS: Beyond all possible expectations

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    After having retraced the entire Standard Model up to the Top, the CMS collaboration is ready to go further and continue the success of what Guido Tonelli – its spokesperson – defines as a ‘magic year’. Things evolve fast at CMS, but scientists have taken up the challenge and are ready for the future.   ‘Enthusiasm’ is the word that best describes the feeling one gets when talking to Guido Tonelli. “In just a few months we have rediscovered the Standard Model and have gone even further by producing new results for cross-sections, placing new limits on the creation of heavy masses, making studies on the excited states of quarks, and seeking new resonances. We could not have expected so much such a short space of time. It’s fantastic”, he says. “We went through the learning phase very smoothly. Our detector was very quickly ready to do real physics and we were able to start to produce results almost ...

  9. Implementing Target Value Design.

    Science.gov (United States)

    Alves, Thais da C L; Lichtig, Will; Rybkowski, Zofia K

    2017-04-01

    An alternative to the traditional way of designing projects is the process of target value design (TVD), which takes different departure points to start the design process. The TVD process starts with the client defining an allowable cost that needs to be met by the design and construction teams. An expected cost in the TVD process is defined through multiple interactions between multiple stakeholders who define wishes and others who define ways of achieving these wishes. Finally, a target cost is defined based on the expected profit the design and construction teams are expecting to make. TVD follows a series of continuous improvement efforts aimed at reaching the desired goals for the project and its associated target value cost. The process takes advantage of rapid cycles of suggestions, analyses, and implementation that starts with the definition of value for the client. In the traditional design process, the goal is to identify user preferences and find solutions that meet the needs of the client's expressed preferences. In the lean design process, the goal is to educate users about their values and advocate for a better facility over the long run; this way owners can help contractors and designers to identify better solutions. This article aims to inform the healthcare community about tools and techniques commonly used during the TVD process and how they can be used to educate and support project participants in developing better solutions to meet their needs now as well as in the future.

  10. Expectations of millennial nurse graduates transitioning into practice.

    Science.gov (United States)

    Andrews, Diane Randall

    2013-01-01

    Identified as Millennials, nurses born after 1980 are anticipated to redefine the employer-employee relationship as one based on the employee's wants and needs. The purpose of this study is to portray the expectations of Millennial student nurses immediately before graduation. Understanding these expectations may provide insight for leaders who are responsible for crafting a successful transition experience. Successful transition and decreased turnover are important elements of cost management for the nursing enterprise. A qualitative descriptive design was used to collect data from 14 students enrolled in a traditional BSN academic nursing program approximately 2 months prior to graduation. Upon completion of private, confidential semistructured interviews, data were transcribed, coded, and analyzed. Demographic data were compiled and interview data summarized according to identified themes. Three overarching themes emerged: the expectation that transition would be stressful, the expectation that there would be a safety net of support, and the expectation to be valued and respected as a professional. Revealing was the expectation of supportive relationships and a collaborative approach to patient care. Failure to meet those expectations may result in turnover as Millennials seek opportunities that meet their expectations.

  11. Do recovery expectations change over time?

    DEFF Research Database (Denmark)

    Kamper, Steven J; Kongsted, Alice; Haanstra, Tsjitske M

    2015-01-01

    , these patients had either high, medium or low levels of expectations for the whole study period. While baseline levels of symptom severity did not discriminate between the three clusters, those in the groups with higher expectations experienced better outcome at 3 months. Approximately 15 % of patients showed...... decrease in expectation levels over the study period and the remainder were categorised in a group with increasingly positive expectations. In the former clusters, decrease in expectations appeared to be concordant with a plateau in symptom improvement, and in the latter, increase in expectations occurred...

  12. The value of value congruence.

    Science.gov (United States)

    Edwards, Jeffrey R; Cable, Daniel M

    2009-05-01

    Research on value congruence has attempted to explain why value congruence leads to positive outcomes, but few of these explanations have been tested empirically. In this article, the authors develop and test a theoretical model that integrates 4 key explanations of value congruence effects, which are framed in terms of communication, predictability, interpersonal attraction, and trust. These constructs are used to explain the process by which value congruence relates to job satisfaction, organizational identification, and intent to stay in the organization, after taking psychological need fulfillment into account. Data from a heterogeneous sample of employees from 4 organizations indicate that the relationships that link individual and organizational values to outcomes are explained primarily by the trust that employees place in the organization and its members, followed by communication, and, to a lesser extent, interpersonal attraction. Polynomial regression analyses reveal that the relationships emanating from individual and organizational values often deviated from the idealized value congruence relationship that underlies previous theory and research. The authors' results also show that individual and organizational values exhibited small but significant relationships with job satisfaction and organizational identification that bypassed the mediators in their model, indicating that additional explanations of value congruence effects should be pursued in future research. (c) 2009 APA, all rights reserved.

  13. User apprehensions and expectations in healthcare IS implementations

    DEFF Research Database (Denmark)

    Hansen, Magnus Rotvit Perlt; Ejnefjäll, Thomas

    We report on the initial findings from a qualitative user expectations study of a Patient Data Management System implementation in an Intensive Care Unit in a Swedish hospital. By drawing on grounded theory we take an open focus on the concepts of fears and beliefs and find that specifically...... the users’ stories of their expectations towards the implementation project seem to influence their apprehensions on similar terms as their existing experiences. The main theoretical contribution here is a framework showing that apprehensions are derived from not only past experience but also new...... expectations. We also contribute with the finding that uncertain aspects of users’ existing work practices lead to positively valued expectations. Practically, we argue that users’ certainties toward the IS implementation may actually lead to uncertainty in other areas and propose that further research should...

  14. AUDIT EXPECTATION GAP IN THE PUBLIC SECTOR IN ROMANIA

    Directory of Open Access Journals (Sweden)

    Gherai Dana Simona

    2011-12-01

    between level of knowledge of the students regarding the statements in audit and the expectation gap. Also there is a significant difference in perceptions of the role of the public auditor in respect of fraud detection. The research will be extended to other users of accounting information (accountants, executives, managers, bankers to see their understanding of the role of external public auditors, this we consider Originality/value – This paper adds evidence to the important debate about expectation gap from a region that has had little coverage. In Romania are just a few information regarding the importance of education in reducing the audit expectation gap in public area. We try to draw attention in two sectors that are left one side, education and public domain. A correlation between these two, in the context of audit expectation gap will give some answers absolutely necessary.

  15. Faculty Expectations of Graduate Students

    Science.gov (United States)

    Hartel, Richard W.

    When looking for a new student a few years ago, I considered an international student who wasn't available for me to interview personally—something I've come to require before I accept a student into my research group. After some preliminary discussion, I asked her my "behavioral" questions by email to give her an opportunity to provide me with some insight into her qualifications and character. I asked her to describe experiences where she had to resolve a conflict with someone else, where she had faced and overcome a hurdle, and to describe her motivation for graduate school. In her response, which started by noting a particular interaction she had had with her father, she presented me with a well-written documentary of her skills, into which her responses to my three questions were woven. Being the sort of person myself who would have bullet-pointed a response and detailed specific activities to document those skills, I was greatly impressed with her ability to think more broadly than my specific request, yet get at the heart of my questions in a creative approach. I accepted her as a student immediately because those are the attributes in a graduate student I value most highly.

  16. Binary compact object inspiral: Detection expectations

    Indian Academy of Sciences (India)

    Vassiliki Kalogera

    2004-10-01

    We review the current estimates of binary compact object inspiral rates in particular in view of the recently discovered highly relativistic binary pulsar J0737-3039. One of the robust results is that, because of this discovery, the rate estimates for binary neutron stars have increased by a factor of 6-7 independent of any uncertainties related to the pulsar population properties. This rate increase has dramatic implications for gravitational wave detectors. For initial LIGO, the most probable detection rates for double neutron star (DNS) inspirals is 1 event/(5{250) yr; at 95% confidence we obtain rates up to 1/1.5 yr. For advanced LIGO, the most probable rates are 20-1000 events/yr. These predictions, for the first time, bring the expectations for DNS detections by initial LIGO to the astrophysically relevant regime. We also use our models to predict that the large-scale Parkes multibeam pulsar survey with acceleration searches could detect an average of three to four binary pulsars similar to those known at present. In comparison, rate estimates for binaries with black holes are derived based on binary evolution calculation, and based on the optimistic ends of the ranges, remain an important candidate for inspiral detection in the next few years. We also consider another aspect of the detectability of binary inspiral: the effect of precession on the detection efficiency of astrophysically relevant binaries. Based on our current astrophysical expectations, large tilt angles are not favored. As a result the decrease in detection rate varies rather slowly with black hole spin magnitude and is within 20-30% of the maximum possible values.

  17. Value Representations

    DEFF Research Database (Denmark)

    Rasmussen, Majken Kirkegaard; Petersen, Marianne Graves

    2011-01-01

    Stereotypic presumptions about gender affect the design process, both in relation to how users are understood and how products are designed. As a way to decrease the influence of stereotypic presumptions in design process, we propose not to disregard the aspect of gender in the design process......, as the perspective brings valuable insights on different approaches to technology, but instead to view gender through a value lens. Contributing to this perspective, we have developed Value Representations as a design-oriented instrument for staging a reflective dialogue with users. Value Representations...

  18. Occupational Values and Career Expectations of Pre-service Male Kindergarten Teachers:A Questionnaire Survey of 100 First-batch Male Kindergarten Education Students in Suzhou%职前幼儿园男教师的职业价值观与职业期望--对苏州首届百名幼师专业男学生的问卷调查

    Institute of Scientific and Technical Information of China (English)

    李娟

    2013-01-01

    By means of a questionnaire survey, this paper attempts to f ind out the occupational values and career expectations of 100 ifrst-batch male kindergarten education students in Suzhou after over two years’ professional training. Then the paper puts forward some practical proposals concerning issues such as male kindergarten teachers’ job entry proportion and job adaptation.%通过问卷调查,了解经过两年多专业学习后的苏州首批百名幼师专业男生的职业价值观,和他们对幼儿园男教师这一职业的未来价值期望,对幼儿园男教师入职比例、入职适应等方面的提高提出一些可行性的建议。

  19. Time Varying Market Integration and Expected Rteurns in Emerging Markets

    NARCIS (Netherlands)

    de Jong, F.C.J.M.; de Roon, F.A.

    2001-01-01

    We use a simple model in which the expected returns in emerging markets depend on their systematic risk as measured by their beta relative to the world portfolio as well as on the level of integration in that market.The level of integration is a time-varying variable that depends on the market value

  20. Entrepreneurial Identity and Role Expectations in Nascent Entrepreneurship

    Science.gov (United States)

    Lundqvist, Mats; Middleton, Karen Williams; Nowell, Pamela

    2015-01-01

    Entrepreneurship has been defined as an individual?new value creation dialogic. To study how entrepreneurial identity evolves, this article, drawing on entrepreneurial learning theory, adds an entrepreneurial role expectations dialogic. Longitudinal evidence from nascent entrepreneurs working in venture teams on invention disclosures offers an…

  1. Community College and Community Leader Expectations of the "Village"

    Science.gov (United States)

    Deggs, David M.; Miller, Michael T.

    2013-01-01

    A level of consistency between community college leaders and community leaders is necessary to demonstrate behaviors, actions, and beliefs that shape, represent, and support expected community values. Likewise, communities, which are collectives of suborganizations, play an important role in aiding individual development, especially related to…

  2. What to Expect After Your Due Date

    Science.gov (United States)

    ... Management Education & Events Advocacy For Patients About ACOG What to Expect After Your Due Date Home For ... Your Due Date FAQ069, August 2011 PDF Format What to Expect After Your Due Date Pregnancy What ...

  3. Inf-convolution of G-expectations

    Institute of Scientific and Technical Information of China (English)

    BUCKDAHN; Rainer

    2010-01-01

    In this paper we will discuss the optimal risk transfer problems when risk measures are generated by G-expectations,and we present the relationship between inf-convolution of G-expectations and the infconvolution of drivers G.

  4. Of Hope, Fear and Rational Expectations

    DEFF Research Database (Denmark)

    Søgaard, Villy

    2011-01-01

    The study explores how gender and differences in preferences affect subjective expectations among a group of students.......The study explores how gender and differences in preferences affect subjective expectations among a group of students....

  5. Mortality hazard rates and life expectancy

    NARCIS (Netherlands)

    J.S. Cramer; R. Kaas

    2013-01-01

    We consider the relation between mortality hazards and life expectancy for men and women in the Netherlands and in England. Halving the lifetime mortality hazards increases life expectancy at birth by only 9%.

  6. Health expectancy in Denmark, 1987-2000.

    Science.gov (United States)

    Brønnum-Hansen, Henrik

    2005-02-01

    While life expectancy quantifies average length of life, health expectancy represents the average lifetime in different health states and offers the possibility to evaluate quality of life with respect to health. The purpose of the study was to estimate changes in health expectancy in Denmark from 1987 to 2000 and to assess theories about the relation between increased total lifetime and lifetime in various health states. Data on health status derived from the Danish Health Interview Surveys carried out in 1987, 1991, 1994 and 2000 were combined with life-table data. Expected lifetime in selfrated good health, life expectancy without longstanding illness and disabilityfree life expectancy were estimated by Sullivan's method. In 1987, the life expectancy of a 65-year-old man was 14.1 years, 8.9 years of which were expected to be disabilityfree. In 2000, life expectancy had increased to 15.0 years, 11.3 years of which were disabilityfree. Thus, life expectancy had increased by 0.9 years, whereas disabilityfree life expectancy had increased by 2.4 years. Among 65-year-old women, life expectancy had increased by 0.2 years and disabilityfree life expectancy by 1.1 years. Expected lifetime in selfrated good health had also improved, but the trend in life expectancy without longstanding illness went in the opposite direction, and expected lifetime with longstanding illness had increased. The recent rise in life expectancy in Denmark after many years of stagnation appears to be accompanied by generally improved health status among the elderly, but health expectancy trends depend on the health indicator chosen. Health expectancy expresses average lifetime in various states of health. The study examines changes in expected lifetime in selfrated good health, lifetime without longstanding illness and lifetime without longterm disability. Among 65-year-olds the percentage of disabilityfree life expectancy increased from 63.4% to 74.9% for men and from 55.6% to 61.0% for women

  7. Trajectories of Educational Expectations from Adolescence to Young Adulthood in Finland

    Science.gov (United States)

    Tynkkynen, Lotta; Tolvanen, Asko; Salmela-Aro, Katariina

    2012-01-01

    The purpose of this person-oriented, 5-wave longitudinal study was to examine the trajectories of educational expectations from adolescence to young adulthood in the context of the expectancy-value theory (Eccles et al., 1983). Altogether, 853 (48% female; M age = 16 years) Finnish adolescents reported their educational expectation, 1st in the…

  8. Trajectories of Educational Expectations from Adolescence to Young Adulthood in Finland

    Science.gov (United States)

    Tynkkynen, Lotta; Tolvanen, Asko; Salmela-Aro, Katariina

    2012-01-01

    The purpose of this person-oriented, 5-wave longitudinal study was to examine the trajectories of educational expectations from adolescence to young adulthood in the context of the expectancy-value theory (Eccles et al., 1983). Altogether, 853 (48% female; M age = 16 years) Finnish adolescents reported their educational expectation, 1st in the…

  9. Reality Shock: What Happens Whan a New Job Doesn't Match Expectations.

    Science.gov (United States)

    Dean, Roger A.; And Others

    Organizational socialization is the process by which a person learns the values, norms, and required behaviors that allow an individual to function as a member of an organization. The individual has expectations of job content, job context, and career expectations. Reality shock occurs when a newcomer's expectations differ from experiences in the…

  10. Constructing Sublinear Expectations on Path Space

    CERN Document Server

    Nutz, Marcel

    2012-01-01

    We provide a general construction of time-consistent sublinear expectations on the space of continuous paths. It yields the existence of the conditional G-expectation of a Borel-measurable (rather than quasi-continuous) random variable, a generalization of the random G-expectation, and an optional sampling theorem that holds without exceptional set. Our results also shed light on the inherent limitations to constructing sublinear expectations through aggregation.

  11. Consumer Attitudes and Their Inflation Expectations

    DEFF Research Database (Denmark)

    Santoro, Emiliano; Pfajfar, Damjan; Ehrmann, Michael

    2017-01-01

    This paper studies consumers’ inflation expectations using micro-level data from the University of Michigan’s Surveys of Consumers. It shows that beyond the well-established socioeconomic factors such as income, age, or gender, inflation expectations are also related to respondents’ financial...... situation, their purchasing attitudes, and their expectations about the macroeconomy. Respondents with current or expected financial difficulties and those with pessimistic attitudes about major purchases, income developments, or unemployment have a stronger upward bias than other households. However...

  12. Price Changes, Resource Adjustments and Rational Expectations

    DEFF Research Database (Denmark)

    Hoffmann, Kira

    This study investigates the relationship between the accuracy of managerial demand expectations, resource adjustment decisions and selling price changes. In line with rational expectation theory, it is argued that managers adjust resources and selling prices differently in response to expected...... that cost elasticity is higher when a demand decrease is expected among companies with similar exposure to demand uncertainty. Overall, this implies that managerial competences in predicting future demand significantly determines firms’ profitability; especially when demand uncertainty is high...

  13. Essays on subjective expectations and mortality trends

    NARCIS (Netherlands)

    Niu, G.

    2014-01-01

    This thesis consists of four chapters on two topics. The first topic, covered in chapter 2, 3, and 4, is about subjective expectations. Economists have long understood that expectations are important determinants of economic decisions. However, expectations are rarely observed. One way to overcome t

  14. Smoking expands expected lifetime with musculoskeletal disease

    DEFF Research Database (Denmark)

    Brønnum-Hansen, Henrik; Juel, Knud

    2003-01-01

    By indirect estimation of mortality from smoking and life table methods we estimated expected lifetime without musculoskeletal diseases among never smokers, ex-smokers, and smokers. We found that although life expectancy of a heavy smoker is 7 years shorter than that of a never smoker, heavy...... smokers can expect to live more than 2 years longer with musculoskeletal diseases than never smokers....

  15. International and American Students' Expectancies about Counseling.

    Science.gov (United States)

    Yuen, Rhoda Ka-Wai; Tinsley, Howard E.A.

    1981-01-01

    American students expect the counselor to be less directive and protective and they themselves expect to be more responsible for improvement. In contrast, the Chinese, Iranian, and African students expect to assume a more passive role and that the counselor will be a more directive and nurturing authority figure. (Author)

  16. Are Grade Expectations Rational? A Classroom Experiment

    Science.gov (United States)

    Hossain, Belayet; Tsigaris, Panagiotis

    2015-01-01

    This study examines students' expectations about their final grade. An attempt is made to determine whether students form expectations rationally. Expectations in economics, rational or otherwise, carry valuable information and have important implications in terms of both teaching effectiveness and the role of grades as an incentive structure for…

  17. Expected Business Conditions and Bond Risk Premia

    DEFF Research Database (Denmark)

    Eriksen, Jonas Nygaard

    This paper studies the predictability of bond risk premia by means of expectations to future business conditions using survey forecasts from the Survey of Professional Forecasters. We show that expected business conditions consistently affect excess bond returns and that the inclusion of expected...

  18. Salience of Alcohol Expectancies and Drinking Outcomes.

    Science.gov (United States)

    Reese, Finetta L.

    1997-01-01

    Investigated whether the prediction of drinking might be enhanced by considering salience of alcohol expectancies rather than mere endorsement. Hierarchical regression analyses demonstrated that expectancy salience significantly improved the prediction of total alcohol consumption above and beyond the effects of expectancy endorsement. Expectancy…

  19. Essays on subjective expectations and stated preferences

    NARCIS (Netherlands)

    Bissonnette, L.

    2012-01-01

    This dissertation's unifying theme is the study of subjective data, with particular emphasis on subjective expectations. Eliciting expectations of survey respondents has become a frequent practice in economics over the last decade. This thesis presents studies of such data, analyzing expectations of

  20. Essays on subjective expectations and mortality trends

    NARCIS (Netherlands)

    Niu, G.

    2014-01-01

    This thesis consists of four chapters on two topics. The first topic, covered in chapter 2, 3, and 4, is about subjective expectations. Economists have long understood that expectations are important determinants of economic decisions. However, expectations are rarely observed. One way to overcome t

  1. Childbirth expectations and correlates at the final stage of pregnancy in Chinese expectant parents

    Directory of Open Access Journals (Sweden)

    Xian Zhang

    2014-06-01

    Conclusion: This study adds to understanding of the childbirth expectations of Chinese expectant parents. It is suggested that maternity healthcare providers pay close attention to the childbirth expectations of expectant parents, and improve the nursing care service to promote positive childbirth experiences and satisfaction of expectant parents.

  2. 學生知覺教師期望、能力信念、實用價值與內在價值對臺灣八年級學生數理成就之影響:以TIMSS 2011 多層次結構方程式模型為例 Effects of Perception of Teachers’ Expectations, Ability Beliefs, Utility Values, and Intrinsic Values on Math and Science Achievement Among Eighth-Grade Students in Taiwan: A Multilevel Structural Equation Model Using TIMSS 2011

    Directory of Open Access Journals (Sweden)

    陳敏瑜 Min-Yu Chen

    2017-03-01

    Full Text Available 本研究以期望價值理論為架構,進行國際數學與科學成就趨勢調查(TIMSS)2011 年臺灣八年級學生數學和科學成就之多層次結構方程式模型分析,瞭解學生層次(學生知覺教師期望、能力信念、實用價值、內在價值)及班級層次(班級知覺教師期望、班級能力信念、班級實用價值、班級內在價值)重要變項之影響力,並探究能力信念在學生知覺教師期望與數理成就之間的中介效果。本研究發現,學生層次和班級層次的模型結構並不相同,在學生層次的分析中,數學和科學的能力信念對學生學業成就的直接效果最大,而在數學與科學的班級層次分析中,班級能力信念皆對班級學業成就產生相當大的直接影響。此外,學生能力信念在學生知覺教師期望與數理成就之間扮演中介角色。最後依據研究結果提供建議,以供 實務應用及未來研究之參考。 On the basis of expectancy-value theory, multilevel structural equation models and trends in mathematics and science study 2011 data were applied to investigate the effects of the student-level variables (perception of teachers’ expectations, ability beliefs, utility values, and intrinsic values and their respective class-level variables on math and science achievement, and to test the mediation effect of ability belief between students’ perception of teachers’ expectations and the math and science achievements of eighth-grade students in Taiwan. The study revealed the following results: (1 The student-level and class-level structures exhibited differences. (2 At the student level, students’ ability belief had the strongest effect on their math and science achievement; the class level of ability belief had a positive effect on math and science achievement. (3 Ability belief had a significant mediating effect between the perception of teachers’ expectations and math

  3. Analytical properties of credibilistic expectation functions.

    Science.gov (United States)

    Wang, Shuming; Wang, Bo; Watada, Junzo

    2014-01-01

    The expectation function of fuzzy variable is an important and widely used criterion in fuzzy optimization, and sound properties on the expectation function may help in model analysis and solution algorithm design for the fuzzy optimization problems. The present paper deals with some analytical properties of credibilistic expectation functions of fuzzy variables that lie in three aspects. First, some continuity theorems on the continuity and semicontinuity conditions are proved for the expectation functions. Second, a differentiation formula of the expectation function is derived which tells that, under certain conditions, the derivative of the fuzzy expectation function with respect to the parameter equals the expectation of the derivative of the fuzzy function with respect to the parameter. Finally, a law of large numbers for fuzzy variable sequences is obtained leveraging on the Chebyshev Inequality of fuzzy variables. Some examples are provided to verify the results obtained.

  4. Expectancy effects in memory for melodies.

    Science.gov (United States)

    Schmuckler, M A

    1997-12-01

    Two experiments explored the relation between melodic expectancy and melodic memory. In Experiment 1, listeners rated the degree to which different endings confirmed their expectations for a set of melodies. After providing these expectancy ratings, listeners received a recognition memory test in which they discriminated previously heard melodies from new melodies. Recognition memory in this task positively correlated with perceived expectancy, and was related to the estimated tonal coherence of these melodies. Experiment 2 extended these results, demonstrating better recognition memory for high expectancy melodies, relative to medium and low expectancy melodies. This experiment also observed asymmetrical memory confusions as a function of perceived expectancy. These findings fit with a model of musical memory in which schematically central events are better remembered than schematically peripheral events.

  5. Does explicit expectation really affect preparation?

    Science.gov (United States)

    Umbach, Valentin J; Schwager, Sabine; Frensch, Peter A; Gaschler, Robert

    2012-01-01

    Expectation enables preparation for an upcoming event and supports performance if the anticipated situation occurs, as manifested in behavioral effects (e.g., decreased RT). However, demonstrating coincidence between expectation and preparation is not sufficient for attributing a causal role to the former. The content of explicit expectation may simply reflect the present preparation state. We targeted this issue by experimentally teasing apart demands for preparation and explicit expectations. Expectations often originate from our experience: we expect that events occurring with a high frequency in the past are more likely to occur again. In addition to expectation, other task demands can feed into action preparation. In four experiments, frequency-based expectation was pitted against a selective response deadline. In a three-choice reaction time task, participants responded to stimuli that appeared with varying frequency (60, 30, 10%). Trial-by-trial stimulus expectations were either captured via verbal predictions or induced by visual cues. Predictions as well as response times quickly conformed to the variation in stimulus frequency. After two (of five) experimental blocks we forced participants by selective time pressure to respond faster to a less frequent stimulus. Therefore, participants had to prepare for one stimulus (medium frequency) while often explicitly expecting a different one (high frequency). Response times for the less frequent stimulus decreased immediately, while explicit expectations continued to indicate the (unchanged) presentation frequencies. Explicit expectations were thus not just reflecting preparation. In fact, participants responded faster when the stimulus matched the trial-wise expectations, even when task demands discouraged their use. In conclusion, we argue that explicit expectation feeds into preparatory processes instead of being a mere by-product.

  6. The Value of Value Sets

    DEFF Research Database (Denmark)

    Sløk-Madsen, Stefan Kirkegaard; Christensen, Jesper

    The world over classrooms in business schools are being taught that corporate values can impact performance. The argument is typically that culture matter more than strategy plans and culture can be influenced and indeed changed by a shared corporate value set. While the claim seems intuitively a...... a unique contribution to the effects of investment in shared company values, and to whether agent rationality can be fundamentally changed by committed organizational efforts.......The world over classrooms in business schools are being taught that corporate values can impact performance. The argument is typically that culture matter more than strategy plans and culture can be influenced and indeed changed by a shared corporate value set. While the claim seems intuitively...... and anecdotally true surprisingly little hard evidence has been produced either for or against. This study attempts to rectify this. The study claims that for corporate values to matter they must at least align, and potentially alter, employee decision-making hence their concept of optimality and rational...

  7. Subjective and objective effects of coffee consumption - caffeine or expectations?

    Science.gov (United States)

    Dömötör, Zs; Szemerszky, R; Köteles, F

    2015-03-01

    Impact of 5 mg/kg caffeine, chance of receiving caffeine (stimulus expectancies), and expectations of effects of caffeine (response expectancies) on objective (heart rate (HR), systolic/diastolic blood pressure (SBP/DBP), measures of heart rate variability (HRV), and reaction time (RT)) and subjective variables were investigated in a double-blind, placebo-controlled experiment with a no-treatment group. Participants were 107 undergraduate university students (mean age 22.3 ± 3.96 years). Consumption of 5 mg/kg caffeine had an impact on participants' SBP, standard deviation of normal heartbeat intervals, HR (decrease), and subjective experience 40 minutes later even after controlling for respective baseline values, stimulus and response expectancies, and habitual caffeine consumption. No effects on DBP, high frequency component of HRV, the ratio of low- and high-frequency, and RT were found. Beyond actual caffeine intake, response expectancy score was also a determinant of subjective experience which refers to a placebo component in the total effect. Actual autonomic (SBP, HR) changes and somatosensory amplification tendency, however, had no significant impact on subjective experience. Placebo reaction plays a role in the subjective changes caused by caffeine consumption but it has no impact on objective variables. Conditional vs deceptive administration of caffeine (i.e. stimulus expectancies) had no impact on any assessed variable.

  8. CLIENT EXPECTATION FROM RESIDENTIAL PROPERTY DESIGN SERVICES AND ARCHITECTS’ PERCEPTION

    Directory of Open Access Journals (Sweden)

    OLUWATAYO Adedapo Adewunmi

    2013-07-01

    Full Text Available Very few studies exist on the expectations of clients from architects. There are however, anecdotal evidences that architects may not fully grasp what is most important to their clients. As a pilot study, the aim of this paper was to investigate the expectations of clients from residential design services and architects’ perceptions of those expectations. A questionnaire was designed to suit the purpose of comparison of responses of the two groups.  The factor analysis conducted revealed that the expectations from design services could be described in terms of value, professionalism, and empathy. Using mean gap analysis, the study identified areas where architects have under-estimated the expectations of clients as well as those areas where the expectations have been over-estimated. The results would help architects to focus on areas, which are important to the clients and possibly reduce client dissatisfaction. This is study, which is one of the first on the subject, is limited in three ways. First, residential clients were the only ones considered. In addition, respondents were only taken from Nigeria and the sample size as well as the response rate was small.

  9. Premenstrual symptoms and smoking-related expectancies.

    Science.gov (United States)

    Pang, Raina D; Bello, Mariel S; Stone, Matthew D; Kirkpatrick, Matthew G; Huh, Jimi; Monterosso, John; Haselton, Martie G; Fales, Melissa R; Leventhal, Adam M

    2016-06-01

    Given that prior research implicates smoking abstinence in increased premenstrual symptoms, tobacco withdrawal, and smoking behaviors, it is possible that women with more severe premenstrual symptoms have stronger expectancies about the effects of smoking and abstaining from smoking on mood and withdrawal. However, such relations have not been previously explored. This study examined relations between premenstrual symptoms experienced in the last month and expectancies that abstaining from smoking results in withdrawal (i.e., smoking abstinence withdrawal expectancies), that smoking is pleasurable (i.e., positive reinforcement smoking expectancies), and smoking relieves negative mood (i.e., negative reinforcement smoking expectancies). In a cross-sectional design, 97 non-treatment seeking women daily smokers completed self-report measures of smoking reinforcement expectancies, smoking abstinence withdrawal expectancies, premenstrual symptoms, mood symptoms, and nicotine dependence. Affect premenstrual symptoms were associated with increased negative reinforcement smoking expectancies, but not over and above covariates. Affect and pain premenstrual symptoms were associated with increased positive reinforcement smoking expectancies, but only affect premenstrual symptoms remained significant in adjusted models. Affect, pain, and water retention premenstrual symptoms were associated with increased smoking abstinence withdrawal expectancies, but only affect premenstrual symptoms remained significant in adjusted models. Findings from this study suggest that addressing concerns about withdrawal and alternatives to smoking may be particularly important in women who experience more severe premenstrual symptoms, especially affect-related changes.

  10. Stock Market Expectations of Dutch Households.

    Science.gov (United States)

    Hurd, Michael; van Rooij, Maarten; Winter, Joachim

    2011-04-01

    Despite its importance for the analysis of life-cycle behavior and, in particular, retirement planning, stock ownership by private households is poorly understood. Among other approaches to investigate this puzzle, recent research has started to elicit private households' expectations of stock market returns. This paper reports findings from a study that collected data over a two-year period both on households' stock market expectations (subjective probabilities of gains or losses) and on whether they own stocks. We document substantial heterogeneity in financial market expectations. Expectations are correlated with stock ownership. Over the two years of our data, stock market prices increased, and expectations of future stock market price changes also increased, lending support to the view that expectations are influenced by recent stock gains or losses.

  11. Stochastic Dominance under the Nonlinear Expected Utilities

    Directory of Open Access Journals (Sweden)

    Xinling Xiao

    2014-01-01

    Full Text Available In 1947, von Neumann and Morgenstern introduced the well-known expected utility and the related axiomatic system (see von Neumann and Morgenstern (1953. It is widely used in economics, for example, financial economics. But the well-known Allais paradox (see Allais (1979 shows that the linear expected utility has some limitations sometimes. Because of this, Peng proposed a concept of nonlinear expected utility (see Peng (2005. In this paper we propose a concept of stochastic dominance under the nonlinear expected utilities. We give sufficient conditions on which a random choice X stochastically dominates a random choice Y under the nonlinear expected utilities. We also provide sufficient conditions on which a random choice X strictly stochastically dominates a random choice Y under the sublinear expected utilities.

  12. Expectations and macroeconomics: learning and loose commitment

    OpenAIRE

    Nunes, Ricardo

    2007-01-01

    The three chapters of this thesis analyze different issues regarding the role of expectations in macroeconomics. The first two chapters consider that private economic agents can either be rational and forward looking or may actually need to use past data to learn how to form expectations. The first two chapters try to describe and estimate the different dynamics that these two types of expectation mechanisms induce. The third chapter analyzes the interaction between policy makers and forward-...

  13. Great Expectations. What the President Expects of the PR Director and What You Should Expect in Return.

    Science.gov (United States)

    Fisher, James L.

    1980-01-01

    A college president has a right to expect competence, loyalty, knowledge of the president, sensitivity, new ideas, contingency plans, a knowledge of higher education, effective management, partisanship, and hard work from his/her public relations officer. In return, that officer should expect respect, support, reward, and status in decision…

  14. Meeting of Horizons of Expectation: Hawthorne Stories

    Institute of Scientific and Technical Information of China (English)

    谢丽湘

    2014-01-01

    Horizons of expectation is a reader’s expectations about what will or may or should happen next,which is an important term in reader-response criticism.These horizons of expectation change frequently,for at the center of all stories is conflict or dramatic tension,often resulting in sudden loss,pain,unexpected joy or fear,and at times great fulfillment.Such changes will cause a reader to modify his horizons of expectation to fit the story’s particular situation.

  15. SYNTHESIZED EXPECTED BAYESIAN METHOD OF PARAMETRIC ESTIMATE

    Institute of Scientific and Technical Information of China (English)

    Ming HAN; Yuanyao DING

    2004-01-01

    This paper develops a new method of parametric estimate, which is named as "synthesized expected Bayesian method". When samples of products are tested and no failure events occur, thedefinition of expected Bayesian estimate is introduced and the estimates of failure probability and failure rate are provided. After some failure information is introduced by making an extra-test, a synthesized expected Bayesian method is defined and used to estimate failure probability, failure rateand some other parameters in exponential distribution and Weibull distribution of populations. Finally,calculations are performed according to practical problems, which show that the synthesized expected Bayesian method is feasible and easy to operate.

  16. On the evaluation of marginal expected shortfall

    DEFF Research Database (Denmark)

    Caporin, Massimiliano; Santucci de Magistris, Paolo

    2012-01-01

    In the analysis of systemic risk, Marginal Expected Shortfall may be considered to evaluate the marginal impact of a single stock on the market Expected Shortfall. These quantities are generally computed using log-returns, in particular when there is also a focus on returns conditional distribution....... In this case, the market log-return is only approximately equal to the weighed sum of equities log-returns. We show that the approximation error is large during turbulent market phases, with a subsequent impact on Marginal Expected Shortfall. We then suggest how to improve the evaluation of Marginal Expected...

  17. Temporal expectation and spectral expectation operate in distinct fashion on neuronal populations.

    Science.gov (United States)

    Hsu, Yi-Fang; Hämäläinen, Jarmo A; Waszak, Florian

    2013-11-01

    The formation of temporal expectation (i.e., the prediction of "when") is of prime importance to sensory processing. It can modulate sensory processing at early processing stages probably via the entrainment of low-frequency neuronal oscillations in the brain. However, sensory predictions involve not only temporal expectation but also spectral expectation (i.e., the prediction of "what"). Here we investigated how temporal expectation may interrelate with spectral expectation by explicitly setting up temporal expectation and spectral expectation in a target detection task. We found that reaction time (RT) was shorter when targets were temporally expected than when they were temporally unexpected. The temporal expectation effect was larger with than without spectral expectation. However, this interaction in the behavioural data did not result from an interaction in the electroencephalography (EEG), where we observed independent main effects of temporal expectation and spectral expectation. More precisely, we found that the N1 and P2 event-related potential (ERP) components and the entrainment of low-frequency neuronal oscillations were exclusively modulated by temporal expectation, whilst only the P3 ERP component was modulated by spectral expectation. Our results, thus, support the idea that temporal expectation and spectral expectation operate in distinct fashion on neuronal populations.

  18. A consolidated model of self-fulfilling expectations and self-destroying expectations in financial markets

    NARCIS (Netherlands)

    Gao, Y.; Li, H.

    2011-01-01

    Self-fulfilling expectations, where people's expectations may enable some ‘pattern’ to arise, and self-destroying expectations, where people's expectations could also induce the arisen ‘pattern’ to disappear, are two attracting phenomena in financial markets. We hold that these two seemingly conflic

  19. Users’ Quality Expectations in Conference Interpreting

    Directory of Open Access Journals (Sweden)

    Mansour Amini

    2015-10-01

    Full Text Available This paper is part of an unpublished doctoral thesis on “Conference Interpreting in Malaysia”. Expectations of users were explored by an on-site questionnaire-based survey study in Malaysian conference interpreting setting. The relative importance of various linguistic and non-linguistic criteria for quality was obtained through quantitative and qualitative methods of data collection. A reliable sample of 256 interpreting “users” (Cronbach alpha coefficient=0.81 were collected from five international conferences in Malaysia. Analysis of the results revealed that users attached high value to the linguistic criteria of sense-consistency with original message (94.1%, logical cohesion (91.1%, fluency of delivery (91%, correct terminology (89.8%, correct grammar (82.8%, completeness of interpretation (80.2%, synchronicity (73%, and style (70.5% rating the criteria very important or important. The parameters of pleasant voice (60.9%, lively intonation (60.4%, and native accent (57.3% were considered desirable, but not essential as they received the least importance by the users. Findings from the open-ended questions showed that users consider “wide range of topics” and “broadening one’s horizons” as the most interesting aspects of conference interpreting. Users indicated that they were willing to listen to the interpretation even if they understood it. These suggest that interpreters are seen as a professional source of knowledge from users’ perspectives. While stressing on the linguistic aspects and the importance of output-related quality criteria, the researcher calls for taking further notice of situational particularities and background variables, pragmatic communication issues, and contextual features with a more extensive view of the profession, in addition to the methodological issues that have always been argued in interpreting quality research.

  20. Smoking expands expected lifetime with musculoskeletal disease

    DEFF Research Database (Denmark)

    Brønnum-Hansen, Henrik; Juel, Knud

    2003-01-01

    By indirect estimation of mortality from smoking and life table methods we estimated expected lifetime without musculoskeletal diseases among never smokers, ex-smokers, and smokers. We found that although life expectancy of a heavy smoker is 7 years shorter than that of a never smoker, heavy...

  1. Expectancy and Phobic Level: Effects on Desensitization

    Science.gov (United States)

    Sullivan, Bernard J.; Denney, Douglas R.

    1977-01-01

    Expectancy instructions were introduced six times during the four-week treatment, and effectiveness of these instructions was demonstrated with independent nonreactive measures of subjects' expectancies. An analysis of self-report, behavioral, and unobtrusive measures of snake anxiety revealed significant main effects for instructions, with…

  2. The expected payoff to Internet auctions

    NARCIS (Netherlands)

    L.F.M. de Haan (Laurens); C.G. de Vries (Casper); C. Zhou (Chen)

    2008-01-01

    textabstractIn an Internet auction, the expected payoff acts as a benchmark of the reasonableness of the price that is paid for the purchased item. Since the number of potential bidders is not observable, the expected payoff is difficult to estimate accurately. We approach this problem by considerin

  3. Expectations, Bond Yields and Monetary Policy

    DEFF Research Database (Denmark)

    Chun, Albert Lee

    2011-01-01

    expectations about inflation, output growth, and the anticipated path of monetary policy actions contain important information for explaining movements in bond yields. Estimates from a forward-looking monetary policy rule suggest that the central bank exhibits a preemptive response to inflationary expectations...

  4. Individual expectations and aggregate macro behavior

    NARCIS (Netherlands)

    Assenza, T.; Heemeijer, P.; Hommes, C.; Massaro, D.

    2013-01-01

    The way in which individual expectations shape aggregate macroeconomic variables is crucial for the transmission and effectiveness of monetary policy. We study the individual expectations formation process and the interaction with monetary policy, within a standard New Keynesian model, by means of l

  5. Individual expectations and aggregate macro behavior

    NARCIS (Netherlands)

    Assenza, T.; Heemeijer, P.; Hommes, C.; Massaro, D.

    2011-01-01

    The way in which individual expectations shape aggregate macroeconomic variables is crucial for the transmission and effectiveness of monetary policy. We study the individual expectations formation process and the interaction with monetary policy, within a standard New Keynesian model, by means of l

  6. International Variations in Measuring Customer Expectations.

    Science.gov (United States)

    Calvert, Philip J.

    2001-01-01

    Discussion of customer expectations of library service quality and SERVQUAL as a measurement tool focuses on two studies: one that compared a survey of Chinese university students' expectations of service quality to New Zealand students; and one that investigated national culture as a source of attitudes to customer service. (Author/LRW)

  7. Subjective Expected Utility Theory with "Small Worlds"

    DEFF Research Database (Denmark)

    Gyntelberg, Jacob; Hansen, Frank

    which is a more general construction than a state space. We retain preference axioms similar in spirit to the Savage axioms and obtain, without abandoning linearity of expectations, a subjective expected utility theory which allows for an intuitive distinction between risk and uncertainty. We also...

  8. Subjective Expected Utility Theory with "Small Worlds"

    DEFF Research Database (Denmark)

    Gyntelberg, Jacob; Hansen, Frank

    which is a more general construction than a state space. We retain preference axioms similar in spirit to the Savage axioms and obtain, without abandoning linearity of expectations, a subjective expected utility theory which allows for an intuitive distinction between risk and uncertainty. We also...... obtain separation of subjective probability and utility as in the state space models....

  9. Grief Experiences and Expectance of Suicide

    NARCIS (Netherlands)

    Wojtkowiak, J.; Wild, V.; Egger, J.I.M.

    2012-01-01

    Suicide is generally viewed as an unexpected cause of death. However, some suicides might be expected to a certain extent, which needs to be further studied. The relationships between expecting suicide, feeling understanding for the suicide, and later grief experiences were explored. In total, 142

  10. Grief Experiences and Expectance of Suicide

    Science.gov (United States)

    Wojtkowiak, Joanna; Wild, Verena; Egger, Jos

    2012-01-01

    Suicide is generally viewed as an unexpected cause of death. However, some suicides might be expected to a certain extent, which needs to be further studied. The relationships between expecting suicide, feeling understanding for the suicide, and later grief experiences were explored. In total, 142 bereaved participants completed the Grief…

  11. 5 CFR 470.301 - Program expectations.

    Science.gov (United States)

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Program expectations. 470.301 Section 470.301 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS PERSONNEL... Projects § 470.301 Program expectations. (a) Demonstration projects permit the Office of...

  12. Parents' Role in Adolescents' Educational Expectations

    Science.gov (United States)

    Rimkute, Laura; Hirvonen, Riikka; Tolvanen, Asko; Aunola, Kaisa; Nurmi, Jari-Erik

    2012-01-01

    The present study examined the extent to which mothers' and fathers' expectations for their offspring's future education, their level of education, and adolescents' academic achievement predict adolescents' educational expectations. To investigate this, 230 adolescents were examined twice while they were in comprehensive school (in the 7th and 9th…

  13. Expectancy violations promote learning in young children.

    Science.gov (United States)

    Stahl, Aimee E; Feigenson, Lisa

    2017-02-27

    Children, including infants, have expectations about the world around them, and produce reliable responses when these expectations are violated. However, little is known about how such expectancy violations affect subsequent cognition. Here we tested the hypothesis that violations of expectation enhance children's learning. In four experiments we compared 3- to 6-year-old children's ability to learn novel words in situations that defied versus accorded with their core knowledge of object behavior. In Experiments 1 and 2 we taught children novel words following one of two types of events. One event violated expectations about the spatiotemporal or featural properties of objects (e.g., an object appeared to magically change locations). The other event was almost identical, but did not violate expectations (e.g., an object was visibly moved from one location to another). In both experiments we found that children robustly learned when taught after the surprising event, but not following the expected event. In Experiment 3 we ruled out two alternative explanations for our results. Finally, in Experiment 4, we asked whether surprise affects children's learning in a targeted or a diffuse way. We found that surprise only enhanced children's learning about the entity that had behaved surprisingly, and not about unrelated objects. Together, these experiments show that core knowledge - and violations of expectations generated by core knowledge - shapes new learning.

  14. Expected Business Conditions and Bond Risk Premia

    DEFF Research Database (Denmark)

    Eriksen, Jonas Nygaard

    2017-01-01

    In this article, I study the predictability of bond risk premia by means of expectations to future business conditions using survey forecasts from the Survey of Professional Forecasters. I show that expected business conditions consistently affect excess bond returns and that the inclusion...

  15. Course Expectations and Career Management Skills

    Science.gov (United States)

    Kennedy, Marnie L.; Haines, Ben

    2008-01-01

    Course completion and student satisfaction is likely to be influenced by how realistic the expectations of students are when they enroll. This report explores the idea that students' expectations would be more realistic if students have well developed career management competencies. Recent research argues that lack of information is not the…

  16. ON JENSEN'S INEQUALITY FOR g-EXPECTATION

    Institute of Scientific and Technical Information of China (English)

    JIANG LONG; CHEN ZENGJING

    2004-01-01

    Briand et al. gave a counterexample showing that given g, Jensen's inequality for g-expectation usually does not hold in general This paper proves that Jensen's inequality for g-expectation holds in general if and only if the generator g (t, z) is super-homogeneous in z. In particular, g is not necessarily convex in z.

  17. Do Students Expect Compensation for Wage Risk?

    Science.gov (United States)

    Schweri, Juerg; Hartog, Joop; Wolter, Stefan C.

    2011-01-01

    We use a unique data set about the wage distribution that Swiss students expect for themselves ex ante, deriving parametric and non-parametric measures to capture expected wage risk. These wage risk measures are unfettered by heterogeneity which handicapped the use of actual market wage dispersion as risk measure in earlier studies. Students in…

  18. Rising Tides: Faculty Expectations of Library Websites

    Science.gov (United States)

    Nicol, Erica Carlson; O'English, Mark

    2012-01-01

    Looking at 2003-2009 LibQUAL+ responses at research-oriented universities in the United States, faculty library users report a significant and consistent rise in desires and expectations for library-provided online tools and websites, even as student user groups show declining or leveling expectations. While faculty, like students, also report…

  19. Expectations and Ideas Coming to School.

    Science.gov (United States)

    Graue, M. Elizabeth

    1993-01-01

    Describes the social construction of parental expectations for kindergarten and first grade in a school community. Focuses on the ideas developed between home and school and between grade levels. Connections are made between these local ideas and the expectations of children as they begin their school careers. (Author)

  20. Grief Experiences and Expectance of Suicide

    Science.gov (United States)

    Wojtkowiak, Joanna; Wild, Verena; Egger, Jos

    2012-01-01

    Suicide is generally viewed as an unexpected cause of death. However, some suicides might be expected to a certain extent, which needs to be further studied. The relationships between expecting suicide, feeling understanding for the suicide, and later grief experiences were explored. In total, 142 bereaved participants completed the Grief…

  1. On Expectations, Realizations and Partial Retirement

    NARCIS (Netherlands)

    Mastrogiacomo, Mauro

    2004-01-01

    This study investigates whether many people fear an unexpectedshock in their financial situation around retirement and whether therelated expectations and realizations match each other. We use theDutch Social Economic Panel survey data, where expectations aboutthe next year's financial situation are

  2. Users’ expectations of public library services

    Directory of Open Access Journals (Sweden)

    Tanja Borko

    2006-01-01

    Full Text Available Public libraries are used by a wide range of users. Therefore they should offer as many different services as possible. The proper introduction of library services to the users can be monitored by measuring their expectations. The article represents the services, which public libraries should offer to their users, definition of the expectation and which factors influence forming the expectations. 60 users were interviewed in two public libraries. The purpose of research was to find out how expectation differs from public library service offer. The results show that most users expect traditional library services such as free access to books, loaning books, giving information over the phone, reading rooms and inter-library loan; furthermore, most users expect library consultancy and advisory services, access to the Internet, public library website, on-line library catalog and services for the youngest members of the library. Fewer users expect guided tour of the library and information on cultural events in the city. Very few users expect modern services, such as provision of electronic publications, courses or lectures for using the Internet and other electronic sources, special courses, such as how to write a scientific research, and services for leisure and recreation, such as organized trips, and fun activities, such as arranging flowers, painting, sawing, etc.

  3. Trends in Life Expectancy in Wellbeing

    Science.gov (United States)

    Perenboom, R. J. M.; Van Herten, L. M.; Boshuizen, H. C.; Van Den Bos, G. A. M.

    2004-01-01

    Objectives: This paper describes and discusses trends in life expectancy in wellbeing between 1989 and 1998. Methods: Data on wellbeing by the Bradburn Affect Balance Scale is obtained from the Netherlands Continuous Health Interview Surveys for the calendar years from 1989 to 1998. Using Sullivan's method, life expectancy in wellbeing is…

  4. Socioeconomic differences in health expectancy in Denmark

    DEFF Research Database (Denmark)

    Brønnum-Hansen, Henrik

    2000-01-01

    Social differences in mortality rates reported in Denmark gave rise to the present study of health expectancy in different socioeconomic groups.......Social differences in mortality rates reported in Denmark gave rise to the present study of health expectancy in different socioeconomic groups....

  5. Do Students Expect Compensation for Wage Risk?

    Science.gov (United States)

    Schweri, Juerg; Hartog, Joop; Wolter, Stefan C.

    2011-01-01

    We use a unique data set about the wage distribution that Swiss students expect for themselves ex ante, deriving parametric and non-parametric measures to capture expected wage risk. These wage risk measures are unfettered by heterogeneity which handicapped the use of actual market wage dispersion as risk measure in earlier studies. Students in…

  6. Grief Experiences and Expectance of Suicide

    NARCIS (Netherlands)

    Wojtkowiak, J.; Wild, V.; Egger, J.I.M.

    2012-01-01

    Suicide is generally viewed as an unexpected cause of death. However, some suicides might be expected to a certain extent, which needs to be further studied. The relationships between expecting suicide, feeling understanding for the suicide, and later grief experiences were explored. In total, 142 b

  7. Dissonant Feedback about Achievement and Teachers' Expectations.

    Science.gov (United States)

    Bognar, Carl J.

    1982-01-01

    Investigates impact of achievement test results (N=285) on 13 sixth-grade teachers' expectations using hypotheses from cognitive dissonance theory. Shows teacher expectations changed very little as a result of feedback, and test results for both under- and overestimated students were rejected. (AH)

  8. Perceptual grouping effects on cursor movement expectations.

    Science.gov (United States)

    Dorneich, Michael C; Hamblin, Christopher J; Lancaster, Jeff A; Olofinboba, Olu

    2014-05-01

    Two studies were conducted to develop an understanding of factors that drive user expectations when navigating between discrete elements on a display via a limited degree-of-freedom cursor control device. For the Orion Crew Exploration Vehicle spacecraft, a free-floating cursor with a graphical user interface (GUI) would require an unachievable level of accuracy due to expected acceleration and vibration conditions during dynamic phases of flight. Therefore, Orion program proposed using a "caged" cursor to "jump" from one controllable element (node) on the GUI to another. However, nodes are not likely to be arranged on a rectilinear grid, and so movements between nodes are not obvious. Proximity between nodes, direction of nodes relative to each other, and context features may all contribute to user cursor movement expectations. In an initial study, we examined user expectations based on the nodes themselves. In a second study, we examined the effect of context features on user expectations. The studies established that perceptual grouping effects influence expectations to varying degrees. Based on these results, a simple rule set was developed to support users in building a straightforward mental model that closely matches their natural expectations for cursor movement. The results will help designers of display formats take advantage of the natural context-driven cursor movement expectations of users to reduce navigation errors, increase usability, and decrease access time. The rules set and guidelines tie theory to practice and can be applied in environments where vibration or acceleration are significant, including spacecraft, aircraft, and automobiles.

  9. Expectation of recovery from low back pain

    DEFF Research Database (Denmark)

    Kongsted, Alice; Vach, Werner; Axø, Marie

    2014-01-01

    Study Design. A prospective cohort study conducted in general practice (GP) and chiropractic practice (CP).Objectives. To explore which patient characteristics were associated with recovery expectations in low back pain (LBP) patients, whether expectations predicted 3-month outcome, and to what e...

  10. Expectations as a key element in trusting

    DEFF Research Database (Denmark)

    Rasmussen, Mette Apollo; Hansen, Uffe Kjærgaard; Conradsen, Maria Bosse

    Considering the need for a tangible focus for qualitative research on trusting, we propose that expectations to the behavior of others can provide that. By focusing on expectations, researchers can produce narrative descriptions that explains how trusting develops and changes. Then the key theore...

  11. Information Characteristics and Errors in Expectations

    DEFF Research Database (Denmark)

    Antoniou, Constantinos; Harrison, Glenn W.; Lau, Morten I.

    2017-01-01

    that the strength-weight bias affects expectations but that its magnitude is significantly lower than originally reported. Controls for nonlinear utility further reduce the bias. Our results suggest that incentive compatibility and controls for risk attitude considerably affect inferences on errors in expectations....

  12. Fair Value or Market Value?

    OpenAIRE

    Bogdan Cosmin Gomoi; Lavinia Denisia Cuc; Robert Almaşi

    2014-01-01

    When taking into consideration the issue of defining the “fair value” concept, those less experimented in the area often fall in the “price trap”, which is considered as an equivalent of the fair value of financial structures. This valuation basis appears as a consequence of the trial to provide an “accurate image” by the financial statements and, also, as an opportunity for the premises offered by the activity continuing principle. The specialized literature generates ample controversies reg...

  13. How expectation works: psychologic and physiologic pathways.

    Science.gov (United States)

    Brown, Walter A

    2015-05-01

    Although expectation has been the most widely studied of the mechanisms that drive the placebo effect, we still don't know how it works. We don't know how the thought that one will respond to a substance in a certain way is converted to symptom relief, intoxication, or airway resistance; the pathway between expectation of a response and the response itself remains uncharted. Nonetheless, in the last decade, brain-imaging studies have begun to uncover this pathway. This paper reviews both long-standing psychologic concepts about the underpinnings of expectation and some of the contemporary brain imaging research, which shows that when expectation alleviates depression, produces pain relief or improves parkinsonian symptoms, these effects come with relevant changes in brain activity and chemistry. These findings oblige us to reevaluate some of the traditional common sense notions of how expectation brings about its effects and how placebos work.

  14. Patient expectancy and post-chemotherapy nausea

    DEFF Research Database (Denmark)

    Colagiuri, Ben; Zachariae, Robert

    2010-01-01

    , specifically controlling for a history of nausea, and involving breast cancer patients, none of the moderators assessed were statistically significant. CONCLUSIONS: These findings suggest that patient expectancies may contribute to post-chemotherapy nausea and that expectancy-based manipulations may provide......BACKGROUND: Post-chemotherapy nausea remains a significant burden to cancer patients. While some studies indicate that expecting nausea is predictive of experiencing nausea, there are a number of conflicting findings. PURPOSE: The purpose of this study was to conduct a meta-analytic review......, there was a robust positive association between expectancy and post-chemotherapy nausea (ESr = 0.18, equivalent to Cohen's d = 0.35), suggesting that patients with stronger expectancies experience more chemotherapy-induced nausea. Although weaker associations were found in studies employing multivariate analysis...

  15. Getting Value from Research

    Science.gov (United States)

    Duke, Charles

    2004-03-01

    During the past decade the environment for and execution of industrial research has changed profoundly, as recently documented in Robert Buderi, Engines of Tomorrow (Simon and Shuster, New York, 2000). The vertically integrated single-firm research-through-product value chains of the twentieth century are gone, replaced by value chains the various elements of which can come from different firms in different parts of the world as described, e.g., by Henry W. Cheesbrough, Open Innovation (Harvard Business School Press, Boston, 2003). The consequences of this change are profound for national R policy, the R strategies of specific firms, and individual researchers. (See e.g., C. B. Duke, How to get value from R, Physics World, 17 (August 1997), 17.) In this presentation I sketch the strategies that firms employ to generate value from their research. Then I discuss the ingredients that are required to implement these strategies by creating value chains to deliver the fruits of research to customers. I indicate how the role of physical sciences is changing as unique hardware, based on advanced research in the physical sciences, becomes an increasingly minor (and often outsourced) component of integrated systems offerings. I close by noting implications of these developments on the nature of the careers that physicists can expect in industry and on the skills and cultural attributes that are required to be successful in the new industrial research environment.

  16. Continued usage of e-learning: Expectations and performance

    Directory of Open Access Journals (Sweden)

    Fernando Antonio de Melo Pereira

    2015-10-01

    Full Text Available The present study aims to investigate the determinants of satisfaction and the resulting continuance intention use in e-learning context. The constructs of decomposed expectancy disconfirmation theory (DEDT are evaluated from the perspective of users of a virtual learning environment (VLE in relation to expectations and perceived performance. An online survey collected responses from 197 students of a public management course in distance mode. Structural equation modeling was operationalized by the method of partial least squares in Smart PLS software. The results showed that there is a relationship between quality, usability, value and value disconfirmation with satisfaction. Likewise, satisfaction proved to be decisive for the continuance intention use. However, there were no significant relationships between quality disconfirmation and usability disconfirmation with satisfaction. Based on the results, is discussed the theoretical and practical implications of the structural model found by the search.

  17. Development and Validation of the Expectations of Aesthetic Rhinoplasty Scale

    Directory of Open Access Journals (Sweden)

    Mohsen Naraghi

    2016-07-01

    Full Text Available BackgroundThere is a growing concern in the field of aesthetic surgery about the need to measure patients' expectations preoperatively. The present study was designed to develop and validate the Expectations of Aesthetic Rhinoplasty Scale (EARS, and to compare expectations between rhinoplasty patients with and without body dysmorphic disorder (BDD.MethodsIn total, 162 college students and 20 rhinoplasty candidates were recruited. The measures included the newly developed EARS, a measure of psychopathology, and demographics. The DSM-IV structured clinical interview for BDD was used to confirm the diagnosis in rhinoplasty patients.ResultsThe EARS was constructed of six items based on their significant content validity. In the scale development phase, Cronbach's alpha was 0.87. The test-retest reliability coefficient of the scale was satisfactory (intraclass correlation coefficient, 0.94; 95% confidence interval, 0.82–0.98 over a four-week period. Scores on the EARS were significantly positively correlated with psychopathological symptoms (r=0.16; P<0.05. Moreover, comparison of EARS scores between BDD (M=25.90, standard deviation [SD]=6.91 and non-BDD rhinoplastic patients (M=15.70, SD=5.27 suggested that BDD patients held significantly higher expectations (P<0.01.ConclusionsThe expectations of aesthetic rhinoplasty patients toward surgery may play a crucial role in their postoperative satisfaction. While the value of patients' expectations is clinically recognized, no empirical study has measured these expectations in a psychometrically sound manner. The current study developed and validated the EARS. It may be easily used as a valid and reliable instrument in clinical and research settings.

  18. Great expectations: teaching ethics to medical students in South Africa.

    Science.gov (United States)

    Behrens, Kevin Gary; Fellingham, Robyn

    2014-12-01

    Many academic philosophers and ethicists are appointed to teach ethics to medical students. We explore exactly what this task entails. In South Africa the Health Professions Council's curriculum for training medical practitioners requires not only that students be taught to apply ethical theory to issues and be made aware of the legal and regulatory requirements of their profession, it also expects moral formation and the inculcation of professional virtue in students. We explore whether such expectations are reasonable. We defend the claim that physicians ought to be persons of virtuous character, on the grounds of the social contract between society and the profession. We further argue that since the expectations of virtue of health care professionals are reasonable, it is also sound reasoning to expect ethics teachers to try to inculcate such virtues in their students, so far as this is possible. Furthermore, this requires of such teachers that they be suitable role models of ethical practice and virtue, themselves. We claim that this applies to ethics teachers who are themselves not members of the medical profession, too, even though they are not bound by the same social contract as doctors. We conclude that those who accept employment as teachers of ethics to medical students, where as part of their contractual obligation they are expected to inculcate moral values in their students, ought to be prepared to accept their responsibility to be professionally ethical, themselves. © 2013 John Wiley & Sons Ltd.

  19. Identifying and aligning expectations in a mentoring relationship.

    Science.gov (United States)

    Huskins, W Charles; Silet, Karin; Weber-Main, Anne Marie; Begg, Melissa D; Fowler, Vance G; Hamilton, John; Fleming, Michael

    2011-12-01

    The mentoring relationship between a scholar and their primary mentor is a core feature of research training. Anecdotal evidence suggests this relationship is adversely affected when scholar and mentor expectations are not aligned. We examined three questions: (1) What is the value in assuring that the expectations of scholars and mentors are mutually identified and aligned? (2) What types of programmatic interventions facilitate this process? (3) What types of expectations are important to identify and align? We addressed these questions through a systematic literature review, focus group interviews of mentors and scholars, a survey of Clinical and Translational Science Award (CTSA) KL2 program directors, and review of formal programmatic mechanisms used by KL2 programs. We found broad support for the importance of identifying and aligning the expectations of scholars and mentors and evidence that mentoring contracts, agreements, and training programs facilitate this process. These tools focus on aligning expectations with respect to the scholar's research, education, professional development and career advancement as well as support, communication, and personal conduct and interpersonal relations. Research is needed to assess test the efficacy of formal alignment activities. © 2011 Wiley Periodicals, Inc.

  20. Expectation mismatch: differences between self-generated and cue-induced expectations.

    Science.gov (United States)

    Gaschler, R; Schwager, S; Umbach, V J; Frensch, P A; Schubert, T

    2014-10-01

    Expectation of upcoming stimuli and tasks can lead to improved performance, if the anticipated situation occurs, while expectation mismatch can lead to less efficient processing. Researchers have used methodological approaches that rely on either self-generated expectations (predictions) or cue-induced expectations to investigate expectation mismatch effects. Differentiating these two types of expectations for different contents of expectation such as stimuli, responses, task sets and conflict level, we review evidence suggesting that self-generated expectations lead to larger facilitating effects and conflict effects on the behavioral and neural level - as compared to cue-based expectations. On a methodological level, we suggest that self-generated as compared to cue-induced expectations allow for a higher amount of experimental control in many experimental designs on expectation effects. On a theoretical level, we argue for qualitative differences in how cues vs. self-generated expectations influence performance. While self-generated expectations might generally involve representing the expected event in the focus of attention in working memory, cues might only lead to such representations under supportive circumstances (i.e., cue of high validity and attended).

  1. Calculation of Expected Shortfall for Measuring Risk and Its Applications

    Institute of Scientific and Technical Information of China (English)

    阎春宁; 余鹏; 黄养新

    2005-01-01

    Expected shortfall(ES) is a new method to measure market risk. In this paper, an example was presented to illustrate that the ES is coherent but value-at-risk(VaR) is not coherent. Three formulas for calculating the ES based on historical simulation method, normal method and GARCH method were derived. Further, a numerical experiment on optimizing portfolio using ES was provided.

  2. Valuing hope.

    Science.gov (United States)

    McMillan, John; Walker, Simon; Hope, Tony

    2014-01-01

    This article argues that hope is of value in clinical ethics and that it can be important for clinicians to be sensitive to both the risks of false hope and the importance of retaining hope. However, this sensitivity requires an understanding of the complexity of hope and how it bears on different aspects of a well-functioning doctor-patient relationship. We discuss hopefulness and distinguish it, from three different kinds of hope, or 'hopes for', and then relate these distinctions back to differing accounts of autonomy. This analysis matters because it shows how an overly narrow view of the ethical obligations of a clinician to their patient, and autonomy, might lead to scenarios where patients regret the choices they make.

  3. Education: A Core Value

    Science.gov (United States)

    Carroll, William F., Jr.

    2001-09-01

    Teaching our Children. ACS should develop an intensive course in modern teaching methods, challenges and responsibilities, and press for streamlined teacher certification procedures for advanced degree or life experience chemists. Teaching our Future Colleagues. As President I will encourage companies to make scientists with special skills available to universities, and will encourage universities to utilize these scientists to round out areas of study not covered by their existing faculty. Teaching our Members. ACS should develop functional and management-related courses for scientists to facilitate career advancement from the bench to research management or from science to business. Teaching the Public. The President is the most visible representative of the Society, and should devote significant time to communication with lay audiences. Value Matters. My first priority as President will be to increase value creation, communication and quantification so members can easily identify programs that fill their needs and exceed their expectations.

  4. Expected innovations of optical lithography in the next 10 years

    Science.gov (United States)

    Owa, Soichi; Hirayanagi, Noriyuki

    2016-03-01

    In the past 10 years, immersion lithography has been the most effective high volume manufacturing method for the critical layers of semiconductor devices. Thinking of the next 10 years, we can expect continuous improvement on existing 300 mm wafer scanners with better accuracy and throughput to enhance the total output value per input cost. This value productivity, however, can be upgraded also by larger innovations which might happen in optical lithography. In this paper, we will discuss the possibilities and the impossibilities of potential innovation ideas of optical lithography, which are 450 mm wafer, optical maskless, multicolor lithography, and metamaterial.

  5. Fair Value or Market Value?

    Directory of Open Access Journals (Sweden)

    Bogdan Cosmin Gomoi

    2014-12-01

    Full Text Available When taking into consideration the issue of defining the “fair value” concept, those less experimented in the area often fall in the “price trap”, which is considered as an equivalent of the fair value of financial structures. This valuation basis appears as a consequence of the trial to provide an “accurate image” by the financial statements and, also, as an opportunity for the premises offered by the activity continuing principle. The specialized literature generates ample controversies regarding the “fair value” concept and the “market value” concept. The paper aims to debate this issue, taking into account various opinions.

  6. Nonlinear expectations in speculative markets – Evidence from the ECB survey of professional forecasters

    DEFF Research Database (Denmark)

    Stadtmann, Georg; Rülke; Reitz

    2012-01-01

    or not regressive and extrapolative expectations themselves exhibit significant nonlinear dynamics. The empirical results are based on a new data set from the European Central Bank Survey of Professional Forecasters on oil price expectations. In particular, we find that forecasters form destabilizing expectations...... in the neighborhood of the fundamental value, whereas expectations tend to be stabilizing in the presence of substantial oil price misalignment.......Chartist and fundamentalist models have proven to be capable of replicating stylized facts on speculative markets. In general, this is achieved by specifying nonlinear interactions of otherwise linear asset price expectations of the respective trader groups. This paper investigates whether...

  7. Prior expectations facilitate metacognition for perceptual decision.

    Science.gov (United States)

    Sherman, M T; Seth, A K; Barrett, A B; Kanai, R

    2015-09-01

    The influential framework of 'predictive processing' suggests that prior probabilistic expectations influence, or even constitute, perceptual contents. This notion is evidenced by the facilitation of low-level perceptual processing by expectations. However, whether expectations can facilitate high-level components of perception remains unclear. We addressed this question by considering the influence of expectations on perceptual metacognition. To isolate the effects of expectation from those of attention we used a novel factorial design: expectation was manipulated by changing the probability that a Gabor target would be presented; attention was manipulated by instructing participants to perform or ignore a concurrent visual search task. We found that, independently of attention, metacognition improved when yes/no responses were congruent with expectations of target presence/absence. Results were modeled under a novel Bayesian signal detection theoretic framework which integrates bottom-up signal propagation with top-down influences, to provide a unified description of the mechanisms underlying perceptual decision and metacognition. Copyright © 2015 Elsevier Inc. All rights reserved.

  8. Expectations predict chronic pain treatment outcomes.

    Science.gov (United States)

    Cormier, Stéphanie; Lavigne, Geneviève L; Choinière, Manon; Rainville, Pierre

    2016-02-01

    Accumulating evidence suggests an association between patient pretreatment expectations and numerous health outcomes. However, it remains unclear if and how expectations relate to outcomes after treatments in multidisciplinary pain programs. The present study aims at investigating the predictive association between expectations and clinical outcomes in a large database of chronic pain patients. In this observational cohort study, participants were 2272 patients treated in one of 3 university-affiliated multidisciplinary pain treatment centers. All patients received personalized care, including medical, psychological, and/or physical interventions. Patient expectations regarding pain relief and improvements in quality of life and functioning were measured before the first visit to the pain centers and served as predictor variables. Changes in pain intensity, depressive symptoms, pain interference, and tendency to catastrophize, as well as satisfaction with pain treatment and global impressions of change at 6-month follow-up, were considered as treatment outcomes. Structural equation modeling analyses showed significant positive relationships between expectations and most clinical outcomes, and this association was largely mediated by patients' global impressions of change. Similar patterns of relationships between variables were also observed in various subgroups of patients based on sex, age, pain duration, and pain classification. Such results emphasize the relevance of patient expectations as a determinant of outcomes in multimodal pain treatment programs. Furthermore, the results suggest that superior clinical outcomes are observed in individuals who expect high positive outcomes as a result of treatment.

  9. Patients' and parents' expectations of orthodontic treatment.

    Science.gov (United States)

    Hiemstra, Renske; Bos, Annemieke; Hoogstraten, Johan

    2009-12-01

    To investigate the expectations of children and their primary care-givers towards orthodontic treatment and to compare the results with those of a UK sample. A questionnaire survey of children and their primary care-givers attending for their first consultation. The Department of Orthodontics at the Academic Centre for Dentistry Amsterdam (ACTA), the Netherlands. A total of 168 subjects (84 patients and 84 parents) completed the questionnaire. The children were aged 10 to 14 years. The responses of the children and parents and differences between boys and girls were examined using parametric statistical methods. The data from the Dutch sample were compared with a similar UK sample. Patients and parents shared similar expectations of orthodontic treatment, with the exception of expectations of having a brace fitted at the first appointment, orthodontic treatment involving headgear, any problems with orthodontic treatment, duration of orthodontic treatment and concerning reactions from the public. Among the child participants, boys and girls only differed in their expectations of orthodontic treatment involving jaw surgery. Differences between Dutch and English participants were found regarding the first visit, type of orthodontic treatment, reactions from the public, and pain and problems with orthodontic treatment. Since the expectations of patients and their parents differ on several aspects, effective communication between the orthodontist, patient and parent is considered to be essential. Our hypothesis that Dutch patients' and parents' expectations of orthodontic treatment differ from the expectations of English patients and parents was supported.

  10. Expected Coverage of Bayesian Confidence Intervals for the Mean of a Poisson Statistic in Measurements with Background

    CERN Document Server

    Narsky, I

    2000-01-01

    Expected coverage and expected length of 90% upper and lower limit and 68.27% central intervals are plotted as functions of the true signal for various values of expected background. Results for several objective priors are shown, and formulas for calculation of confidence intervals are obtained. For comparison, expected coverage and length of frequentist intervals constructed with the unified approach of Feldman and Cousins and a simple classical method are also shown. It is assumed that the expected background is accurately known prior to performing an experiment. The plots of expected coverage and length are provided for values of signal and background typical for particle experiments with small numbers of events.

  11. Diverging expectations in buyer-seller relationships

    DEFF Research Database (Denmark)

    Andersen, Poul Houman; Christensen, Poul Rind; Damgaard, Torben

    2009-01-01

    SMEs. We discuss four relational expectations derived from the B2B literature on relational norms for addressing these divergences: Quality, frequency and scope of communication, role specifications and coordination of work nature of planning horizons, and trustworthiness and link these to relationship...... performance. We explore the proposed impact of diverging relationship norms on relationship expectations using data from an ongoing field study of Danish buyers and Chinese suppliers. We link these diverging expectations to the business practices of Danish buyers and Chinese and their institutional contexts...

  12. Dynamic decision making without expected utility

    DEFF Research Database (Denmark)

    Nielsen, Thomas Dyhre; Jaffray, Jean-Yves

    2006-01-01

    Non-expected utility theories, such as rank dependent utility (RDU) theory, have been proposed as alternative models to EU theory in decision making under risk. These models do not share the separability property of expected utility theory. This implies that, in a decision tree, if the reduction...... maker’s discordant goals at the different decision nodes. Relative to the computations involved in the standard expected utility evaluation of a decision problem, the main computational increase is due to the identification of non-dominated strategies by linear programming. A simulation, using the rank...

  13. Memory for expectation-violating concepts

    DEFF Research Database (Denmark)

    Porubanova, Michaela; Shaw, Daniel; McKay, Ryan

    2014-01-01

    Previous research has shown that ideas which violate our expectations, such as schema-inconsistent concepts, enjoy privileged status in terms of memorability. In our study, memory for concepts that violate cultural (cultural schema-level) expectations (e.g., ‘‘illiterate teacher’’, ‘‘wooden bottle...... expectations and with intuitive concepts (e.g., ‘‘galloping pony’’, ‘‘drying orchid’’, or ‘‘convertible car’’), in both immediate recall, and delayed recognition tests. Importantly, concepts related to agents showed a memory advantage over concepts not pertaining to agents, but this was true only...

  14. Scientific expectations from the INTEGRAL spectrometer SPI

    Science.gov (United States)

    Schoenfelder, Volker

    2003-03-01

    The spectrometer SPI - one of the two main instruments aboard ESA's INTEGRAL - is dedicated to high resolution gamma-ray line spectroscopy with modest imaging. SPI will mainly concentrate on the study of lines from radioactive isotopes. A wealth of new information is expected from interstellar line emission with narrow line profiles. But existing results are also expected from profile measurements of individual line emitting objects such as supernovae, supernova remnants, novae or stellar black hole systems. In addition, sensitive measurements of continuum emission from compact sources and from interstellar space are expected, especially in the sub-MeV region.

  15. The Probability Model of Expectation Disconfirmation Process

    Directory of Open Access Journals (Sweden)

    Hui-Hsin HUANG

    2015-06-01

    Full Text Available This paper proposes a probability model to explore the dynamic process of customer’s satisfaction. Bases on expectation disconfirmation theory, the satisfaction is constructed with customer’s expectation before buying behavior and the perceived performance after purchase. The experiment method is designed to measure expectation disconfirmation effects and we also use the collection data to estimate the overall satisfaction and model calibration. The results show good fitness between the model and the real data. This model has application for business marketing areas in order to manage relationship satisfaction.

  16. Valuing charity.

    Science.gov (United States)

    Kronick, R

    2001-10-01

    Arrow asserted that a variety of institutional arrangements and observable mores of the medical profession were functional responses to the failure of the market to insure against uncertainties. But one of these norms--the ethic to provide treatment without regard to ability to pay--was also a response to the failure of the political system to assure the elderly and poor would not suffer more than others when they got sick. This ethic is strikingly different from the norm in most other areas of the economy. Automobile dealers and department stores are not expected to give away their products to the poor; neither are grocery stores or farmers. Public education is a closer analogy, reflecting the norm that all children deserve a good education. In education, however, unlike in medicine, we collectively support this norm by providing public funds to accomplish this goal rather than by relying on the private market. In 1963, physicians argued that a combination of the market and private philanthropy (including the obligations of physicians) would be sufficient to guarantee high-quality care for the elderly and the poor. Government financing, they argued, would lead to socialized medicine, impairing relationships between physicians and patients and between physicians and society. Based on his article, Arrow would not have agreed. Neither, apparently, did the public. The enactment of Medicare indicated, in part, that many people understood, even in 1965, the extent to which treatment choices and outcomes were affected by ability to pay. Events since 1965 suggest that there is some tension between insurance and ethical responses to uncertainty despite Arrow's endorsement of both. I have argued here that Medicare and Medicaid further eroded the ethic that treatment should be available without regard to ability to pay by reducing physician willingness to provide charity care and by reducing the resources available to public hospitals and the interest of private teaching

  17. Valuing vaccination

    Science.gov (United States)

    Bärnighausen, Till; Bloom, David E.; Cafiero-Fonseca, Elizabeth T.; O’Brien, Jennifer Carroll

    2014-01-01

    Vaccination has led to remarkable health gains over the last century. However, large coverage gaps remain, which will require significant financial resources and political will to address. In recent years, a compelling line of inquiry has established the economic benefits of health, at both the individual and aggregate levels. Most existing economic evaluations of particular health interventions fail to account for this new research, leading to potentially sizable undervaluation of those interventions. In line with this new research, we set forth a framework for conceptualizing the full benefits of vaccination, including avoided medical care costs, outcome-related productivity gains, behavior-related productivity gains, community health externalities, community economic externalities, and the value of risk reduction and pure health gains. We also review literature highlighting the magnitude of these sources of benefit for different vaccinations. Finally, we outline the steps that need to be taken to implement a broad-approach economic evaluation and discuss the implications of this work for research, policy, and resource allocation for vaccine development and delivery. PMID:25136129

  18. When theory and biology differ: The relationship between reward prediction errors and expectancy.

    Science.gov (United States)

    Williams, Chad C; Hassall, Cameron D; Trska, Robert; Holroyd, Clay B; Krigolson, Olave E

    2017-09-18

    Comparisons between expectations and outcomes are critical for learning. Termed prediction errors, the violations of expectancy that occur when outcomes differ from expectations are used to modify value and shape behaviour. In the present study, we examined how a wide range of expectancy violations impacted neural signals associated with feedback processing. Participants performed a time estimation task in which they had to guess the duration of one second while their electroencephalogram was recorded. In a key manipulation, we varied task difficulty across the experiment to create a range of different feedback expectancies - reward feedback was either very expected, expected, 50/50, unexpected, or very unexpected. As predicted, the amplitude of the reward positivity, a component of the human event-related brain potential associated with feedback processing, scaled inversely with expectancy (e.g., unexpected feedback yielded a larger reward positivity than expected feedback). Interestingly, the scaling of the reward positivity to outcome expectancy was not linear as would be predicted by some theoretical models. Specifically, we found that the amplitude of the reward positivity was about equivalent for very expected and expected feedback, and for very unexpected and unexpected feedback. As such, our results demonstrate a sigmoidal relationship between reward expectancy and the amplitude of the reward positivity, with interesting implications for theories of reinforcement learning. Copyright © 2017 Elsevier B.V. All rights reserved.

  19. The impact of individual expectations and expectation conflicts on virtual teams

    NARCIS (Netherlands)

    Bosch-Sijtsema, Petra

    2007-01-01

    Virtual teams are characterized by geographical dispersion, organizational, and cultural heterogeneity, and their members have little history and lateral and weak relationships. Literature denotes the importance of expectations in virtual settings, but individual expectations of virtual team members

  20. Practical Performance Expectations for Smart Packaging

    Institute of Scientific and Technical Information of China (English)

    Chris; Cook; Mark; Brown

    2007-01-01

    Executive Summary There seema to be a common expectation among radio frequency identification(RFID) newcomers that putting an inexpensive,passive smart label on a box will create an accounting nirvana.

  1. What to Expect During a Colonoscopy

    Medline Plus

    Full Text Available ... Earn your CME from the convenience of your home or office by accessing ACG's web-based educational ... ACG Blog Follow ACG on Twitter Patients ACG Home / Media / What to Expect During a Colonoscopy What ...

  2. A SEMIOLOGIC APPROACH TO AUDIT EXPECTATIONS GAP

    Directory of Open Access Journals (Sweden)

    Ciolpan Daniela

    2009-05-01

    Full Text Available Audit expectations gap (AEG is one of the most debated phenomena animating the international scientific research scene. The volume of papers focused on defining the AEG concept, examining its determinants, implications, and mechanisms to minimize the gap

  3. What To Expect During Pulmonary Rehabilitation

    Science.gov (United States)

    ... NHLBI on Twitter. What To Expect During Pulmonary Rehabilitation Pulmonary rehabilitation (PR) can have many parts, and not all ... back over and over with his or her hands cupped. This loosens the mucus from your lungs ...

  4. Why did Danish women's life expectancy stagnate?

    DEFF Research Database (Denmark)

    Lindahl-Jacobsen, Rune; Oeppen, James; Rizzi, Silvia

    2016-01-01

    -attributable mortality was excluded, the gap in partial life expectancy at age 50 between Swedish and Danish women diminished substantially. The effect was most pronounced in the interwar generations. The major reason for the stagnation in Danish women's partial life expectancy at age 50 was found to be smoking......The general health status of a population changes over time, generally in a positive direction. Some generations experience more unfavourable conditions than others. The health of Danish women in the interwar generations is an example of such a phenomenon. The stagnation in their life expectancy...... between 1977 and 1995 is thought to be related to their smoking behaviour. So far, no study has measured the absolute effect of smoking on the mortality of the interwar generations of Danish women and thus the stagnation in Danish women's life expectancy. We applied a method to estimate age...

  5. Classics in the Classroom: Great Expectations Fulfilled.

    Science.gov (United States)

    Pearl, Shela

    1986-01-01

    Describes how an English teacher in a Queens, New York, ghetto school introduced her grade nine students to Charles Dickens's "Great Expectations." Focuses on students' responses, which eventually became enthusiastic, and discusses the use of classics within the curriculum. (KH)

  6. Speed of vision depends on temporal expectancy

    DEFF Research Database (Denmark)

    Vangkilde, Signe Allerup; Bundesen, Claus

    2009-01-01

    Temporal expectations play an important role in optimizing future perception and behavior, but the nature of the attentional processes affected by our expectations is still widely debated. To investigate effects of expectations on the speed of visual processing, we employed a cued single-letter...... recognition task with stimuli of varied durations terminated by pattern masks. To obtain an estimate of processing speed unconfounded by motor components, we used accuracy-based measures rather than reaction times. Eight healthy young subjects completed a total of 4,000 trials each. A symbolic cue...... at the beginning of each trial induced an expectation about the time when the stimulus letter would appear. Waiting times were not fixed but distributed exponentially. The cue indicated which of two distributions with different hazard rates the waiting time would be drawn from. The hazard rate could be either high...

  7. What to Expect After Pulmonary Rehabilitation

    Science.gov (United States)

    ... Expect After Benefits & Risks Links Related Topics Bronchitis COPD Cystic Fibrosis Idiopathic Pulmonary Fibrosis Sarcoidosis Send a ... answer questions. Some of these tests, such as exercise tests, will be the same ones you had ...

  8. What to Expect Before Pulmonary Rehabilitation

    Science.gov (United States)

    ... Expect After Benefits & Risks Links Related Topics Bronchitis COPD Cystic Fibrosis Idiopathic Pulmonary Fibrosis Sarcoidosis Send a ... how well you're able to breathe and exercise. You'll have lung function tests to check ...

  9. Economic Loan Loss Provision and Expected Loss

    National Research Council Canada - National Science Library

    Hlawatsch, Stefan; Ostrowski, Sebastian

    2010-01-01

    ... adjusted. This however assumes that the loan loss provision and the expected loss are based on a similar economic rationale, which is only valid conditionally in current loan loss provisioning methods according to IFRS...

  10. Parental outcome expectations on children's TV viewing

    Science.gov (United States)

    Children's TV viewing has been associated with increased sedentary behavior and poor eating habits. Positive intervention effects have been observed when addressing outcome expectations as a mediator in interventions targeting children's dietary behavior. Little is known about parental outcome expec...

  11. Adolescent Perceptions of Stress and Future Expectations

    Directory of Open Access Journals (Sweden)

    Cybelle Bezerra Sousa Florêncio

    Full Text Available Abstract: Adolescence has been described as a developmental phase marked by challenges, tensions, and uncertainties that can generate stress and lower adolescents' future expectations. This study aims to describe adolescent perceptions of stress and future expectations.It is a mixed-methods study of 17 high school students, selected from a sample of 295 adolescents, aged 14 to 18 years, who are pupils in a private school system in the metropolitan region of Belém do Pará. The Stress Scale for Adolescents was used, in addition to focus groups. The results indicated higher stress levels in female adolescents. The participants who had no stress hadgood family relationships and well-defined future expectations. However, the adolescents who had stress associated their family context with stressors and had no expectations for the future.

  12. Remaining Life Expectancy With and Without Polypharmacy

    DEFF Research Database (Denmark)

    Wastesson, Jonas W; Canudas-Romo, Vladimir; Lindahl-Jacobsen, Rune

    2016-01-01

    OBJECTIVES: To investigate the remaining life expectancy with and without polypharmacy for Swedish women and men aged 65 years and older. DESIGN: Age-specific prevalence of polypharmacy from the nationwide Swedish Prescribed Drug Register (SPDR) combined with life tables from Statistics Sweden...... was used to calculate the survival function and remaining life expectancy with and without polypharmacy according to the Sullivan method. SETTING: Nationwide register-based study. PARTICIPANTS: A total of 1,347,564 individuals aged 65 years and older who had been prescribed and dispensed a drug from July 1...... to September 30, 2008. MEASUREMENTS: Polypharmacy was defined as the concurrent use of 5 or more drugs. RESULTS: At age 65 years, approximately 8 years of the 20 remaining years of life (41%) can be expected to be lived with polypharmacy. More than half of the remaining life expectancy will be spent...

  13. Development and Integration of Professional Core Values Among Practicing Clinicians

    National Research Council Canada - National Science Library

    McGinnis, Patricia Quinn; Guenther, Lee Ann; Wainwright, Susan F

    2016-01-01

    The physical therapy profession has adopted professional core values, which define expected values for its members, and developed a self-assessment tool with sample behaviors for each of the 7 core values...

  14. Evolution of non-expected utility preferences

    CERN Document Server

    Widekind, Sven von; Fandel, G

    2008-01-01

    The theory on the evolution of preferences deals with the endogenous formation of preference relations in strategic situations. It is related to the field of evolutionary game theory. In this book we analyze the role and the influence of general, possibly non-expected utility preferences in such an evolutionary setup. In particular, we demonstrate that preferences which diverge from von Neumann-Morgenstern expected utility may potentially prove to be successful under evolutionary pressures.

  15. Enhanced Expectancies Improve Performance Under Pressure

    OpenAIRE

    McKay, Brad; Lewthwaite, Rebecca; Wulf,Gabriele

    2012-01-01

    Beyond skill, beliefs in requisite abilities and expectations can affect performance. This experiment examined effects of induced perceptions of ability to perform well under generic situations of challenge. Participants (N = 31) first completed one block of 20 trials on a throwing accuracy task. They then completed questionnaires ostensibly measuring individual differences in the ability to perform under pressure. Enhanced-expectancy group participants were told that they were well-suited to...

  16. Comparison of evidenced and expected ADN competencies.

    Science.gov (United States)

    Burch, S; Joyce-Nagata, B; Reeb, R

    1991-01-01

    These study findings indicate that nursing service administrators in the State of Mississippi expect strong technical level skills from the ADN. Congruency between nursing education and nursing service was validated. The predominance of role competencies outlined by nurse educators were validated as both expected and evidenced for the ADN in the State of Mississippi. Competencies need to be continually evaluated to reflect changes in the health delivery system as related to the ADN.

  17. Stock Price Expectations and Stock Trading

    OpenAIRE

    Michael D. Hurd; Susann Rohwedder

    2012-01-01

    Background: The fact that many individuals inexplicably fail to buy stocks, despite the historical evidence for a good return on investment has been referred to as the stock market puzzle. However, measurements of the subjective probability of a gain show that people are more pessimistic than historical outcomes would suggest. Further, expectations of future stock price increases apparently depend on old information, which would seem to be at odds with rational expectations in the context of ...

  18. Patient expectations are not always the same.

    Science.gov (United States)

    Delgado, A; Andrés López-Fernández, L; de Dios Luna, J; Gil, N; Jiménez, M; Puga, A

    2008-05-01

    To validate a scale that measures patients' expectations when seeking advice for health problems of different types. 360 patients who had consulted their general practitioner (GP) during the previous 12 months were randomly selected from the lists of 30 GPs. A questionnaire, including a 13-item expectation scale, was administered by interview in the patient's home to assess expectations in relation to five health problems, three biomedical (strong chest pain, genital discharge and the common cold) and two psychosocial (depression/sadness and serious family problem), repeating the expectation scale for each one. The frequency distribution of items was analysed, multi-level factorial analysis was performed and the reliability of the expectation scale was tested for each hypothetical clinical condition. The response rate was 90%. Mean age of patients was 47.3 years (SD 16.5); 51% were women. Expectations were high but varied according to the nature and severity of the condition. The percentage of patients wanting the doctor alone to make decisions ranged from 50% for "family problem" to 68% for "chest pain". The five factorial structures differed and explained 49.3-63.9% of the variance. Similarities were observed depending on the type of problem. "Communication" and "Experience of disease" were thus separate dimensions for the biomedical diseases but mixed for the psychosocial conditions. The factorial structure of expectations varied, indicating that expectations are not homogeneous in all clinical situations. The desire of the patient to participate in decision-making also differs according to the type of health problem.

  19. Inflation Expectations, Wealth Perception, and Consumption Expenditure

    OpenAIRE

    Chiang, Alpha C.; Stephen M. Miller

    1988-01-01

    The literature on wealth perception has been focused on the tax discounting of government bonds and, to a lesser extent, the Pesek-Saving effect. The authors consider here, in addition, the effects of expected inflation on wealth perception. In the resulting broadened framework, they find empirically that there is overwhelming expected-inflation discounting of money, but little or no tax discounting of bonds. This has far-reaching policy implications that are contrary to conventional wisdom. ...

  20. The Gothic Features in Great Expectations

    Institute of Scientific and Technical Information of China (English)

    DAI Jia-xuan

    2014-01-01

    As one of the most well-known novels of Charles Dickens, it is difficult to define one single specific genre for Great Expectations. It is widely recognized as a bildungsroman and realistic fiction and social criticism. In addition to all these genres, we can also identify many intriguing features of Gothic novel. This paper is devoted to interpreting the Gothic characteristics of Great Expectations, and particularly, settings characters, and the narration of the novel are the major focuses of analysis.

  1. Converting customer expectations into achievable results.

    Science.gov (United States)

    Landis, G A

    1999-11-01

    It is not enough in today's environment to just meet customers' expectations--we must exceed them. Therefore, one must learn what constitutes expectations. These needs have expanded during the past few years from just manufacturing the product and looking at the outcome from a provincial standpoint. Now we must understand and satisfy the entire supply chain. To manage this process and satisfy the customer, the process now involves the supplier, the manufacturer, and the entire distribution system.

  2. Expectation and attention in hierarchical auditory prediction.

    Science.gov (United States)

    Chennu, Srivas; Noreika, Valdas; Gueorguiev, David; Blenkmann, Alejandro; Kochen, Silvia; Ibáñez, Agustín; Owen, Adrian M; Bekinschtein, Tristan A

    2013-07-03

    Hierarchical predictive coding suggests that attention in humans emerges from increased precision in probabilistic inference, whereas expectation biases attention in favor of contextually anticipated stimuli. We test these notions within auditory perception by independently manipulating top-down expectation and attentional precision alongside bottom-up stimulus predictability. Our findings support an integrative interpretation of commonly observed electrophysiological signatures of neurodynamics, namely mismatch negativity (MMN), P300, and contingent negative variation (CNV), as manifestations along successive levels of predictive complexity. Early first-level processing indexed by the MMN was sensitive to stimulus predictability: here, attentional precision enhanced early responses, but explicit top-down expectation diminished it. This pattern was in contrast to later, second-level processing indexed by the P300: although sensitive to the degree of predictability, responses at this level were contingent on attentional engagement and in fact sharpened by top-down expectation. At the highest level, the drift of the CNV was a fine-grained marker of top-down expectation itself. Source reconstruction of high-density EEG, supported by intracranial recordings, implicated temporal and frontal regions differentially active at early and late levels. The cortical generators of the CNV suggested that it might be involved in facilitating the consolidation of context-salient stimuli into conscious perception. These results provide convergent empirical support to promising recent accounts of attention and expectation in predictive coding.

  3. Taxation and life expectancy in Western Europe.

    Science.gov (United States)

    Bagger, P J

    2004-06-01

    With the exception of Denmark, life expectancy in Western Europe has shown a significant increase over the last decades. During that period of time overall taxation has increased in most of the countries, especially in Denmark. We, therefore, examined whether taxation could influence life expectancy in Western Europe. We used information on the sum of income tax and employees' social contribution in percentage of gross wage earnings from the OECD database and data on disability adjusted life expectancy at birth from the World Health Organization database. We arbitrarily only included countries with populations in excess of 4 millions and thereby excluded smaller countries where tax exemption is part of the national monetary policy. We found that disability adjusted life expectancy at birth was inversely correlated to the total tax burden in Western Europe. We speculate whether a threshold exists where high taxes exert a negative influence on life expectancy despite increased welfare spending. The study suggests that tax burden should be considered among the multiple factors influencing life expectancy.

  4. Value of Information Evaluation using Field Data

    Energy Technology Data Exchange (ETDEWEB)

    Trainor-Guitton, W. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2015-06-15

    Value of information (VOI) provides the ability to identify and prioritize useful information gathering for a geothermal prospect, either hydrothermal or for enhanced geothermal systems. Useful information provides a value greater than the cost of the information; wasteful information costs more than the expected value of the information. In this project we applied and refined VOI methodologies on selected geothermal prospects.

  5. Do fair value adjustments influence dividend policy?

    NARCIS (Netherlands)

    Goncharov, I.; van Triest, S.

    2011-01-01

    We examine the impact of positive fair value adjustments on dividend policy. If fair value adjustments are transitory in nature and managers are able to assess their implications for future earnings, fair value adjustments in net income is expected to have no distribution consequences. However, posi

  6. Do fair value adjustments influence dividend policy?

    NARCIS (Netherlands)

    Goncharov, I.; van Triest, S.

    2011-01-01

    We examine the impact of positive fair value adjustments on dividend policy. If fair value adjustments are transitory in nature and managers are able to assess their implications for future earnings, fair value adjustments in net income is expected to have no distribution consequences. However,

  7. Value of Information Evaluation using Field Data

    Energy Technology Data Exchange (ETDEWEB)

    Trainor-Guitton, W. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2015-06-15

    Value of information (VOI) provides the ability to identify and prioritize useful information gathering for a geothermal prospect, either hydrothermal or for enhanced geothermal systems. Useful information provides a value greater than the cost of the information; wasteful information costs more than the expected value of the information. In this project we applied and refined VOI methodologies on selected geothermal prospects.

  8. Quantifying Audit Expectation Gap: A New approach to Measuring Expectation Gap

    Directory of Open Access Journals (Sweden)

    Salehi Mahdi

    2016-05-01

    Full Text Available The main objective of the study is at first identifying the expectation gap about audit responsibility and the second quantifying the expectation gap in Iran. In order to collecting data, a questionnaire designed and developed between auditors and investors. Collected data analyzed by employing non-parametric statistics test. The results show that there is expectation gap between auditors and investors in Iran. The current study employed a new approach in the world in order to quantifying the expectation gap. It gives the more strength to other researchers in order to measuring audit expectation gap in the world.

  9. Women's needs and expectations during normal labor and delivery.

    Science.gov (United States)

    Iravani, Mina; Zarean, Elahe; Janghorbani, Mohsen; Bahrami, Masod

    2015-01-01

    Pregnancy and birth are unique processes for women. Women and families hold different expectation during childbearing based on their knowledge, experiences, belief systems, culture, and social and family backgrounds. These differences should be understood and respected, and care is adapted and organized to meet the individualized needs of women and families. The purpose of this study was to explore Iranian parturient needs, values and preferences during normal labor and delivery. An exploratory qualitative study was used. Twenty-four parturient women from three governmental medical training centers in Isfahan, Iran were recruited using purposive sampling. Participants were recruited to low-risk women after they had given birth, but before they were discharged from hospital. Data were collected through semi-structured in-depth interviews, informal observations and field notes. Interviews were transcribed verbatim and analyzed by the conventional content analysis according to Graneheim and Lundman approach. Women's needs and expectations fell into seven main categories: Physiological, psychological, informational, social and relational, esteem, security and medical needs. All of the key needs in these data relates to a fundamental need, named "sense of control and empowerment in childbirth." Knowing a woman's needs, values, preferences and expectations during normal labor and delivery assists healthcare professionals especially midwives in providing high-quality care to parturient women.

  10. The predictive validity of prospect theory versus expected utility in health utility measurement.

    Science.gov (United States)

    Abellan-Perpiñan, Jose Maria; Bleichrodt, Han; Pinto-Prades, Jose Luis

    2009-12-01

    Most health care evaluations today still assume expected utility even though the descriptive deficiencies of expected utility are well known. Prospect theory is the dominant descriptive alternative for expected utility. This paper tests whether prospect theory leads to better health evaluations than expected utility. The approach is purely descriptive: we explore how simple measurements together with prospect theory and expected utility predict choices and rankings between more complex stimuli. For decisions involving risk prospect theory is significantly more consistent with rankings and choices than expected utility. This conclusion no longer holds when we use prospect theory utilities and expected utilities to predict intertemporal decisions. The latter finding cautions against the common assumption in health economics that health state utilities are transferable across decision contexts. Our results suggest that the standard gamble and algorithms based on, should not be used to value health.

  11. Components of attention modulated by temporal expectation.

    Science.gov (United States)

    Sørensen, Thomas Alrik; Vangkilde, Signe; Bundesen, Claus

    2015-01-01

    By varying the probabilities that a stimulus would appear at particular times after the presentation of a cue and modeling the data by the theory of visual attention (Bundesen, 1990), Vangkilde, Coull, and Bundesen (2012) provided evidence that the speed of encoding a singly presented stimulus letter into visual short-term memory (VSTM) is modulated by the observer's temporal expectations. We extended the investigation from single-stimulus recognition to whole report (Experiment 1) and partial report (Experiment 2). Cue-stimulus foreperiods were distributed geometrically using time steps of 500 ms. In high expectancy conditions, the probability that the stimulus would appear on the next time step, given that it had not yet appeared, was high, whereas in low expectancy conditions, the probability was low. The speed of encoding the stimuli into VSTM was higher in the high expectancy conditions. In line with the Easterbrook (1959) hypothesis, under high temporal expectancy, the processing was also more focused (selective). First, the storage capacity of VSTM was lower, so that fewer stimuli were encoded into VSTM. Second, the distribution of attentional weights across stimuli was less even: The efficiency of selecting targets rather than distractors for encoding into VSTM was higher, as was the spread of the attentional weights of the target letters.

  12. Changing mortality and average cohort life expectancy

    Directory of Open Access Journals (Sweden)

    Robert Schoen

    2005-10-01

    Full Text Available Period life expectancy varies with changes in mortality, and should not be confused with the life expectancy of those alive during that period. Given past and likely future mortality changes, a recent debate has arisen on the usefulness of the period life expectancy as the leading measure of survivorship. An alternative aggregate measure of period mortality which has been seen as less sensitive to period changes, the cross-sectional average length of life (CAL has been proposed as an alternative, but has received only limited empirical or analytical examination. Here, we introduce a new measure, the average cohort life expectancy (ACLE, to provide a precise measure of the average length of life of cohorts alive at a given time. To compare the performance of ACLE with CAL and with period and cohort life expectancy, we first use population models with changing mortality. Then the four aggregate measures of mortality are calculated for England and Wales, Norway, and Switzerland for the years 1880 to 2000. CAL is found to be sensitive to past and present changes in death rates. ACLE requires the most data, but gives the best representation of the survivorship of cohorts present at a given time.

  13. The subjective marijuana experience: great expectations.

    Science.gov (United States)

    Stark-Adamec, C; Adamec, R E; Pihl, R O

    1981-10-01

    Participants' expectations of marijuana effects are frequently cited as unmeasured post hoc explanations of variability in response to the drug, or of the data which fail to conform to the experimenters' expectations of the drug's effects. Twenty-four male volunteers, experienced in the use of marijuana, participated in research involving the administration of coltsfoot, placebo, and marijauna to investigate whether expectancy of marijuana effects could be measured and related to observed effects. Data for the Expectancy Questionnaire were derived from the Marihuana Effects Questions filled out when potential participants volunteered for the study and were compared to the High Questionnaire filled out after drug administration sessions. Expectancy was shown to have a quantifiable effect on the drug experience (both placebo and marijuana), even in an experimental situation. Prior frequency of occurrence of specific effects was positively related to both the intensity and duration of the effects in the laboratory. The data are discussed in terms of the learned components in getting stoned, and in terms of the social nature of cannabis intoxication.

  14. Child Characteristics and Parental Educational Expectations: Evidence for Transmission with Transaction

    Science.gov (United States)

    Briley, Daniel A.; Harden, K. Paige; Tucker-Drob, Elliot M.

    2014-01-01

    Parents' expectations for their children's ultimate educational attainment have been hypothesized to play an instrumental role in socializing academically relevant child behaviors, beliefs, and abilities. In addition to social transmission of educationally relevant values from parents to children, parental expectations and child…

  15. The Effects of Education Compatibility and Technological Expectancy on E-Learning Acceptance

    Science.gov (United States)

    Chen, Jian-Liang

    2011-01-01

    Discerning what influences a student's acceptance of e-learning is still unclear and has not been well investigated. On the basis of the expectancy-value theory, much effort has been put into identifying the effectual factors regarding the technological expectancy of students. However, aside from technological usage, the adoption of an e-learning…

  16. The Long-Term Effects of Early Parent Involvement and Parent Expectation in the USA

    Science.gov (United States)

    Froiland, John Mark; Peterson, Aubrey; Davison, Mark L.

    2013-01-01

    Building on social-cognitive theory and the expectancy-value theory, this study indicated that early parent expectations for children’s post-secondary educational attainment have a stronger effect on 8th-grade achievement than home-based parental involvement. With a nationally representative sample of kindergarten students and their parents in the…

  17. Life Expectancy and Human Capital Investments: Evidence from Maternal Mortality Declines. NBER Working Paper No. 13947

    Science.gov (United States)

    Jayachandran, Seema; Lleras-Muney, Adriana

    2008-01-01

    Longer life expectancy should encourage human capital accumulation, since a longer time horizon increases the value of investments that pay out over time. Previous work has been unable to determine the empirical importance of this life-expectancy effect due to the difficulty of isolating it from other effects of health on education. We examine a…

  18. The expected performance of single nucleotide polymorphism loci in paternity testing.

    Science.gov (United States)

    Ayres, Karen L

    2005-11-25

    We discuss the utility of single nucleotide polymorphism loci for full trio and mother-unavailable paternity testing cases, in the presence of population substructure and relatedness of putative and actual fathers. We focus primarily on the expected number of loci required to gain specified probabilities of mismatches, and report the expected proportion of paternity indices greater than three threshold values for these loci.

  19. The Long-Term Effects of Early Parent Involvement and Parent Expectation in the USA

    Science.gov (United States)

    Froiland, John Mark; Peterson, Aubrey; Davison, Mark L.

    2013-01-01

    Building on social-cognitive theory and the expectancy-value theory, this study indicated that early parent expectations for children’s post-secondary educational attainment have a stronger effect on 8th-grade achievement than home-based parental involvement. With a nationally representative sample of kindergarten students and their parents in the…

  20. Factors Complicating Expectancy Theory Predictions of Work Motivation and Job Performance.

    Science.gov (United States)

    Kopelman, Richard E.

    The conventional paradigm for testing expectancy theory predictions of work behavior has been to correlate expectancy-value reports with concurrent measures of motivation and performance. Although this static, two-variable approach has typically yielded statistically significant results, correlations have not been sizable. This study, using a…