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Sample records for delayed selfing adjusted

  1. Developmental delays at arrival and postmenarcheal Chinese adolescents' adjustment.

    Science.gov (United States)

    Tan, Tony X; Rice, Jessica L; Mahoney, E Emily

    2015-01-01

    Internationally adopted (IA) children often have delays at adoption and undergo massive catch-up after adoption. Before achieving developmental catch-up, however, delays at adoption present a risk for IA children's adjustment, but it remains unknown whether such delays foreshadow IA children's outcomes after catch-up development has completed or ceased. In the current analysis, we utilized menarche as a practical marker to indicate the cessation of developmental catch-up. We investigated how delays at arrival predicted long-term outcomes in 132 postmenarcheal teens (M = 14.2 years, SD = 1.7) who were adopted from China at 16.6 months (SD = 17.1). In 2005, adoptive parents provided data of medical evaluation results on their children's delay status in gross motor skills, fine motor skills, social development, emotional development, and cognitive development. Six years later in 2011, data on parent-child relationship quality were collected from parents, and data on the adoptees' academic competence and internalizing problems were also collected from both parents and adoptees. We found that gross motor delay at arrival predicted academic performance (parent-report: b = -.34, p < .01) and internalizing problems (self-report: b = .26, p < .05; parent-report: b = .33, p < .01). Other delays were not significant in predicting any of the outcomes. The impact of early nutritional deprivation on gross motor development was discussed.

  2. Religiousity, Spirituality and Adolescents' Self-Adjustment

    Science.gov (United States)

    Japar, Muhammad; Purwati

    2014-01-01

    Religiuosity, spirituality, and adolescents' self-adjustment. The objective of this study is to test the correlation among religiosity, spirituality and adolescents' self-adjustment. A quantitative approach was employed in this study. Data were collected from 476 junior high schools students of 13 State Junior High Schools and one Junior High…

  3. Loneliness, Self-Concept, and Adjustment.

    Science.gov (United States)

    Goswick, Ruth Ann; Jones, Warren H.

    1981-01-01

    In two studies, college students completed the UCLA Loneliness Scale, the Tennessee Self-Concept Scale, and an inventory which assessed the degree of other-focused attention. Results indicated that loneliness was related to more negative self-concepts, possibly less adjustment, and more self-focus. (Author/MP)

  4. Delayed self-synchronization in homoclinic chaos

    Science.gov (United States)

    Arecchi, F. T.; Meucci, R.; Allaria, E.; di Garbo, A.; Tsimring, L. S.

    2002-04-01

    The chaotic spike train of a homoclinic dynamical system is self-synchronized by applying a time-delayed correction proportional to the laser output intensity. Due to the sensitive nature of the homoclinic chaos to external perturbations, stabilization of very long-periodic orbits is possible. On these orbits, the dynamics appears chaotic over a finite time, but then it repeats with a recurrence time that is slightly longer than the delay time. The effect, called delayed self-synchronization, displays analogies with neurodynamic events that occur in the buildup of long-term memories.

  5. Self-Adjustable Adhesion of Polyampholyte Hydrogels.

    Science.gov (United States)

    Roy, Chanchal Kumar; Guo, Hong Lei; Sun, Tao Lin; Ihsan, Abu Bin; Kurokawa, Takayuki; Takahata, Masakazu; Nonoyama, Takayuki; Nakajima, Tasuku; Gong, Jian Ping

    2015-12-02

    Developing nonspecific, fast, and strong adhesives that can glue hydrogels and biotissues substantially promotes the application of hydrogels as biomaterials. Inspired by the ubiquitous adhesiveness of bacteria, it is reported that neutral polyampholyte hydrogels, through their self-adjustable surface, can show rapid, strong, and reversible adhesion to charged hydrogels and biological tissues through the Coulombic interaction.

  6. Application of CyboCon Advanced Adjustment and Control Software Package in Delayed Coking Unit

    Institute of Scientific and Technical Information of China (English)

    Guo Hua

    2002-01-01

    This article refers to application of the CyboCon software package based upon the model-free adaptive control (MFA) in the 800-kt/a delayed coking unit to realize an advanced adjustment and control strategy for the temperature control of the heater. Operation tests have revealed the convenience in operating system and simplicity in maintenance, leading to good economic benefits.

  7. Self-adjustable glasses in the developing world

    Directory of Open Access Journals (Sweden)

    Murthy Gudlavalleti VS

    2014-02-01

    Full Text Available Venkata S Murthy Gudlavalleti,1 Komal Preet Allagh,1 Aashrai SV Gudlavalleti2 1Indian Institute of Public Health, Public Health Foundation of India, Hyderabad, 2Centre for Chronic Disease Control, Public Health Foundation of India, New Delhi, India Abstract: Uncorrected refractive errors are the single largest cause of visual impairment globally. Refractive errors are an avoidable cause of visual impairment that are easily correctable. Provision of spectacles is a cost-effective measure. Unfortunately, this simple solution becomes a public health challenge in low- and middle-income countries because of the paucity of human resources for refraction and optical services, lack of access to refraction services in rural areas, and the cost of spectacles. Low-cost approaches to provide affordable glasses in developing countries are critical. A number of approaches has been tried to surmount the challenge, including ready-made spectacles, the use of focometers and self-adjustable glasses, among other modalities. Recently, self-adjustable spectacles have been validated in studies in both children and adults in developed and developing countries. A high degree of agreement between self-adjustable spectacles and cycloplegic subjective refraction has been reported. Self-refraction has also been found to be less prone to accommodative inaccuracy compared with non-cycloplegic autorefraction. The benefits of self-adjusted spectacles include: the potential for correction of both distance and near vision, applicability for all ages, the empowerment of lay workers, the increased participation of clients, augmented awareness of the mechanism of refraction, reduced costs of optical and refraction units in low-resource settings, and a relative reduction in costs for refraction services. Concerns requiring attention include a need for the improved cosmetic appearance of the currently available self-adjustable spectacles, an increased range of correction (currently

  8. Comprehensive research on self phase modulation based optical delay systems

    Institute of Scientific and Technical Information of China (English)

    Yang Ai-Ying; Sun Yu-Nan

    2010-01-01

    This paper comprehensively investigates the properties of self phase modulation based optical delay systems consisting of dispersion compensation fibre and highly nonlinear fibres.It researches into the impacts of power level launched into highly nonlinear fibres,conversion wavelength,dispersion slope,modulation format and optical filter bandwidth on the overall performance of optical delay systems.The results reveal that,if the power launched into highly nonlinear fibres is fixed,the time delay generally varies linearly with the conversion wavelength,but jumps intermittently at some conversion wavelengths.However,the time delay varies semi-periodically with the power launched into highly nonlinear fibres.The dispersion slope of highly nonlinear fibres has significant influence on the time delay,especially for the negative dispersion slope.The time delay differs with modulation formats due to the different combined interaction of nonlinearity and dispersion in fibres.The bandwidth of the optical filters also greatly affects the time delay because it determines the bandwidth of the passed signal in the self phase modulation based time delay systems.The output signal quality of the overall time delay systems depends on the conversion wavelength and input power level.The optimisation of the power level and conversion wavelength to provide the best output signal quality is made at the end of this paper.

  9. Delayed Self-Recognition in Children with Autism Spectrum Disorder

    Science.gov (United States)

    Lind, Sophie E.; Bowler, Dermot M.

    2009-01-01

    This study aimed to investigate temporally extended self-awareness (awareness of one's place in and continued existence through time) in autism spectrum disorder (ASD), using the delayed self-recognition (DSR) paradigm (Povinelli et al., Child Development 67:1540-1554, 1996). Relative to age and verbal ability matched comparison children, children…

  10. On Self-adjustment of Social Conventions to Small Perturbations

    Institute of Scientific and Technical Information of China (English)

    JIANG Yi-Chuan

    2008-01-01

    @@ We present a model for self-adjustment of social conventions to small perturbations, and investigate how pertur-bations can influence the convergence of social convention in different situations.The experimental results show that the sensitivity of social conventions is determined by not only the perturbations themselves but also the agent adjustment functions for the perturbations; and social conventions are more sensitive to the outlier agent number than to the strategy fluctuation magnitudes and localities of perturbations.

  11. [Self-esteem, self-centeredness and social-emotional adjustment of gifted children and adolescents].

    Science.gov (United States)

    Kostogianni, N; Andronikof, A

    2009-10-01

    There is an ongoing debate of how giftedness affects social-emotional adjustment. Self-esteem may be an indicator of social-emotional adjustment but insufficient in its explanatory capacity, especially high self-esteem which tends to produce opposite responses in regards to adjustment. A distinction between defensive and genuine high self-esteem could account for these results. In order to understand how self-esteem operates on social-emotional adjustment, it should be associated with other measurements relating to self-concern. In the Rorschach comprehensive system (CS), egocentricity index measures self-centeredness, which can be defined as the balance between self-concern and concern for others. High self-concern is associated with a neglect of the others. Operationalized here, as the interaction of high self-esteem and excessive self-concern, defensive high self-esteem should predict maladaptive outcomes. Participants were aged from 9 to 15 years old, with an IQ greater or equal to 130 on the WISC-III. They were attending regular classes and were not in counseling or psychotherapy. Children and adolescents were administrated the Rorschach CS and the Coopersmith self-esteem inventory. Parents completed the child behaviour checklist (CBCL) which assesses general psychopathology. Seventy-eight subjects' data satisfy the conditions of validity of the instruments used. Gifted boys present more behavior and emotional problems than gifted girls in this study. Self-esteem predicts social-emotional adjustment. There is an interaction between self-esteem and self-concern on psychopathology only for high values of self-esteem. Gifted with high self-esteem associated with high self-concern are more vulnerable to maladjustment than high self-esteem associated with low self-concern. Gifted children and adolescents with low self-esteem experience more problems anyhow. These findings reinforce the view that the gifted are a diverse group in terms of social-emotional adjustment

  12. Children's self-statements and adjustment to elective outpatient surgery.

    Science.gov (United States)

    Brophy, C J; Erickson, M T

    1990-02-01

    Children's coping self-statements, levels of anxiety, degree of behavioral adjustment, as well as levels of maternal state anxiety and parenting style, and demographic variables were used to predict the reactions of 61 children to elective day surgery. Results indicated that elective day surgery was not psychologically traumatic for most children. However, the use of negative self-statements and both low and high maternal anxiety were found to be related to increased anxiety of the children experiencing elective day surgery.

  13. [Self-concept and psychosocial adjustment in adolescence].

    Science.gov (United States)

    Fuentes, María C; García, José Fernando; Gracia, Enrique; Lila, Marisol

    2011-02-01

    This study analyses the relationship between a multidimensional measure of self-concept, Self-concept Form-5 Questionnaire (AF5), and a broad set of adolescents' psychosocial adjustment indicators. From the responses of 1,281 participants (53.7% females) aged 12 to 17 years ( M = 14.98 years, SD = 1.74 years), results indicated that higher self-concept scores corresponded to better psychological adjustment, good personal skills and fewer behavioral problems. Although a positive relationship between social self-concept and drug use was found, this significant relationship disappeared once the adolescent's age and sex was controlled for. These results support the idea that the self-concept is a basic theoretical construct closely related to the psychosocial adjustment in adolescence. Also this study helps explain some contradictory results reported in the literature (i.e., a positive relationship between social self-concept and drug use), by showing how the statistical control of a third variable effect (i.e., age) avoids reaching conclusions based on spurious relationships.

  14. Self-Concept and Psychological Adjustment Differences Between Self-Identified Male Transexuals and Male Homosexuals

    Science.gov (United States)

    Roback, Howard B.; And Others

    1977-01-01

    Self-concept and adjustment data from anatomical males seeking sexual reassignment surgery were compared with that from a male homosexual group. Findings indicated that the homosexual group had a better self-image and was better adjusted than the sex change group. (Author)

  15. The Relationship Between Self Concept and Marital Adjustment.

    Science.gov (United States)

    Hall, William M., Jr.; Valine, Warren J.

    The purpose of this study was to investigate the relationship between self concept and marital adjustment for married students and their spouses in a commuter college setting. The sample consisted of a random selection of 50 "both spouses commuting" couples, 50 "husband only commuting" couples, and 50 "wife only commuting" couples (300 subjects).…

  16. A Consistent Semantics of Self-Adjusting Computation

    CERN Document Server

    Acar, Umut A; Donham, Jacob

    2011-01-01

    This paper presents a semantics of self-adjusting computation and proves that the semantics are correct and consistent. The semantics integrate change propagation with the classic idea of memoization to enable reuse of computations under mutation to memory. During evaluation, reuse of a computation via memoization triggers a change propagation that adjusts the reused computation to reflect the mutated memory. Since the semantics integrate memoization and change-propagation, it involves both non-determinism (due to memoization) and mutation (due to change propagation). Our consistency theorem states that the non-determinism is not harmful: any two evaluations of the same program starting at the same state yield the same result. Our correctness theorem states that mutation is not harmful: self-adjusting programs are consistent with purely functional programming. We formalize the semantics and their meta-theory in the LF logical framework and machine check our proofs using Twelf.

  17. The Impact of Self-Similar Traffic on Network Delay

    Institute of Scientific and Technical Information of China (English)

    SHU Yantai; XUE Fei; JIN Zhigang; Oliver Yang

    1999-01-01

    The effect of self-similar traffic onthe delay of a single queue system is studied through the use of themeasured traffic and models as input process. A model-drivensimulation-based method is then proposed for the computation of meanline delay in a network design. Both the hybrid-FGN and the FARIMAalgorithms have been used to synthesize self-similar sample paths. Thecomparison results with real-traffic data sets firmly establish theusefulness of the proposed model-driven simulation-based method. Apractical database method is also introduced that helps the designer todetermine the parameters in network design. This approach mayplay an important role in network design and analysis.

  18. The Role of Ego Development in Psychosocial Adjustment among Boys with Delayed Puberty

    Science.gov (United States)

    Lindfors, Kaj; Elovainio, Marko; Wickman, Sanna; Vuorinen, Risto; Sinkkonen, Jari; Dunkel, Leo; Raappana, Aleksi

    2007-01-01

    This study examined the role of ego development, as measured with the Washington University sentence completion test, in the relationship between pubertal maturation and psychosocial adjustment (self-image and depression) in adolescent boys. The data consisted of 73 boys between 14 and 16 years of age. The results indicated that late maturing boys…

  19. Stigmatic fluid aids self-pollination in Roscoea debilis (Zingiberaceae): a new delayed selfing mechanism.

    Science.gov (United States)

    Fan, Yong-Li; Li, Qing-Jun

    2012-10-01

    Delayed selfing is the predominant mode of autonomous self-pollination in flowering plants. However, few delayed selfing mechanisms have been documented. This research aims to explore a new delayed selfing mechanism induced by stigmatic fluid in Roscoea debilis, a small perennial ginger. Floral biology and flower visitors were surveyed. The capacity of autonomous selfing was evaluated by pollinator exclusion. The timing of autonomous selfing was estimated by emasculation at different flowering stages. The number of seeds produced from insect-pollination was assessed by emasculation and exposure to pollinators in the natural population. The breeding system was also tested by pollination manipulations. Autonomous self-pollination occurred after flowers wilted. The stigmatic fluid formed a globule on the stigma on the third day of flowering. The enlarged globule seeped into the nearby pollen grains on the fourth flowering day, thus inducing pollen germination. Pollen tubes then elongated and penetrated the stigma. Hand-selfed flowers produced as many seeds as hand-crossed flowers. There was no significant difference in seed production between pollinator-excluded flowers and hand-selfed flowers. When emasculated flowers were exposed to pollinators, they produced significantly fewer seeds than intact flowers. Visits by effective pollinators were rare. This study describes a new form of delayed autonomous self-pollination. As the predominant mechanism of sexual reproduction in R. debilis, delayed self-pollination ensures reproduction when pollinators are scarce.

  20. Semi-Global Matching with Self-Adjusting Penalties

    Science.gov (United States)

    Karkalou, E.; Stentoumis, C.; Karras, G.

    2017-02-01

    The demand for 3D models of various scales and precisions is strong for a wide range of applications, among which cultural heritage recording is particularly important and challenging. In this context, dense image matching is a fundamental task for processes which involve image-based reconstruction of 3D models. Despite the existence of commercial software, the need for complete and accurate results under different conditions, as well as for computational efficiency under a variety of hardware, has kept image-matching algorithms as one of the most active research topics. Semi-global matching (SGM) is among the most popular optimization algorithms due to its accuracy, computational efficiency, and simplicity. A challenging aspect in SGM implementation is the determination of smoothness constraints, i.e. penalties P1, P2 for disparity changes and discontinuities. In fact, penalty adjustment is needed for every particular stereo-pair and cost computation. In this work, a novel formulation of self-adjusting penalties is proposed: SGM penalties can be estimated solely from the statistical properties of the initial disparity space image. The proposed method of self-adjusting penalties (SGM-SAP) is evaluated using typical cost functions on stereo-pairs from the recent Middlebury dataset of interior scenes, as well as from the EPFL Herz-Jesu architectural scenes. Results are competitive against the original SGM estimates. The significant aspects of self-adjusting penalties are: (i) the time-consuming tuning process is avoided; (ii) SGM can be used in image collections with limited number of stereo-pairs; and (iii) no heuristic user intervention is needed.

  1. The Relationship Between Self-Concept and Marital Adjustment for Commuter College Students

    Science.gov (United States)

    Hall, William M.; Valine, Warren J.

    1977-01-01

    An investigation was made of the relationship between self-concept and the adjustment of commuter college students. Instruments used were the Tennessee Self Concept Scale and the Locke-Wallace Marital Adjustment Test. There was a significant relationship between self-concept and marital adjustment. (Author)

  2. Consequences of self-handicapping: effects on coping, academic performance, and adjustment.

    Science.gov (United States)

    Zuckerman, M; Kieffer, S C; Knee, C R

    1998-06-01

    Self-handicappers erect impediments to performance to protect their self-esteem. The impediments may interfere with the ability to do well and, as such, may result in poor adjustment. Using a longitudinal design, the present studies examined prospective effects of self-handicapping on coping, academic performance, and several adjustment-related variables (e.g., self-esteem). It was found that, compared to low self-handicappers, high self-handicappers reported higher usage of coping strategies implying withdrawal and negative focus. High self-handicappers performed less well academically, an effect that was mediated in part by poor study habits. Finally, high self-handicapping resulted in poorer adjustment over time, and poorer adjustment resulted in higher self-handicapping over time. These relations are consistent with the idea of a vicious cycle in which self-handicapping and poor adjustment reinforce one another.

  3. Why Superman Can Wait: Cognitive Self-Transformation in the Delay of Gratification Paradigm

    Science.gov (United States)

    Karniol, Rachel; Galili, Lior; Shtilerman, Dafna; Naim, Reut; Stern, Karin; Manjoch, Hadar; Silverman, Rotem

    2011-01-01

    We examined middle-class Israeli preschoolers' cognitive self-transformation in the delay of gratification paradigm. In Study 1, 66 un-caped or Superman-caped preschoolers delayed gratification, half with instructions regarding Superman's delay-relevant qualities. Caped children delayed longer, especially when instructed regarding Superman's…

  4. Wind-Dragged Corolla Enhances Self-Pollination: A New Mechanism of Delayed Self-Pollination

    Science.gov (United States)

    Qu, Rongming; Li, Xiaojie; Luo, Yibo; Dong, Ming; Xu, Huanli; Chen, Xuan; Dafni, Amots

    2007-01-01

    Background and Aims Delayed self-pollination is a mechanism that allows animal-pollinated plants to outcross while ensuring seed production in the absence of pollinators. This study aims to explore a new mechanism of delayed self-pollination facilitated by wind-driven corolla abscission in Incarvillea sinensis var. sinensis. Methods Floral morphology and development, and the process of delayed self-pollination were surveyed. Experiments dealing with pollinator and wind exclusion, pollination manipulations, and pollinator observations were conducted in the field. Key Results Delayed self-pollination occurs when the abscising corolla driven by wind drags the adherent epipetalous stamens, thus leading to contact of anthers with stigma in late anthesis. There is no dichogamy and self-incompatibility in this species. The significantly higher proportion of abscised corolla under natural conditions as compared with that in wind-excluding tents indicates the importance of wind in corolla abscission. When pollinators were excluded, corolla abscission significantly increased the number of pollen grains deposited on the stigma and, as a result, the fruit and seed set. Only half of the flowers in plots were visited by pollinators, and the fruit set of emasculated flowers was significantly lower than that of untreated flowers in open pollination. This species has a sensitive stigma, and its two open stigmatic lobes closed soon after being touched by a pollinator, but always reopened if no or only little pollen was deposited. Conclusions This delayed self-pollination, which involved the movement of floral parts, the active participation of the wind and sensitive stigma, is quite different from that reported previously. This mechanism provides reproductive assurance for this species. The sensitive stigma contributes to ensuring seed production and reducing the interference of selfing with outcrossing. The pollination pattern, which combines actions by bees with indirect

  5. Adult attachment insecurity and dyadic adjustment: The mediating role of self-criticism.

    Science.gov (United States)

    Martins, Teresa C; Canavarro, Maria Cristina; Moreira, Helena

    2015-12-01

    Although it is well established that adult attachment is associated with relationship quality, the mechanisms involved in this association are still poorly understood. Individual variables that are shaped in early attachment experiences, such as self-criticism, may be particularly important. The present study aimed to investigate the mediating role of self-criticism and self-reassurance on the association between attachment-related anxiety and avoidance and dyadic adjustment. About 230 individuals from a community sample completed an online battery of self-report measures of adult attachment, dyadic adjustment, and forms of self-criticism and self-reassuring. A parallel mediation model was tested. Data showed that attachment anxiety and avoidance were associated with poorer dyadic adjustment through high levels of self-criticism in the form of an inadequate self. Our findings highlight the importance of targeting feelings of self-inadequacy in couple therapy to promote better dyadic adjustment and relationship functioning. The innovative contribution of this work is the identification of a new mechanism underlying the association between adult attachment and dyadic functioning. Self-criticism in the form of an inadequate self mediates the association between attachment and dyadic adjustment. Although correlated with attachment dimensions and dyadic adjustment, the hated self and the reassured self do not act as mediators of the relationship between attachment and dyadic adjustment. It seems important to evaluate and address feelings of inadequacy in the context of couple therapy. © 2015 The British Psychological Society.

  6. Peer Attachment, Perceived Parenting Style, Self-concept, and School Adjustments in Adolescents with Chronic Illness

    National Research Council Canada - National Science Library

    Ahn, Jeong-Ah; Lee, Sunhee

    2016-01-01

    .... Multiple-group structural equation modeling was used to evaluate the difference of relations for peer attachment, parenting style, self-concept, and school adjustment variable between adolescents...

  7. INTERNATIONAL STUDENTS’ ADJUSTMENT IN HIGHER EDUCATION: RELATION BETWEEN SOCIAL SUPPORT, SELF-EFFICACY, AND SOCIO-CULTURAL ADJUSTMENT

    Directory of Open Access Journals (Sweden)

    Yusliza Mohd.Yusoff

    2011-05-01

    Full Text Available This study was aimed at investigating the relationship between social support (Zimet et al., 1988, self-efficacy (Schwarzer & Jerusalem, 1995, and socio-cultural adjustment (Ward & Kennedy, 1999. The sample consisted of 185 international undergraduate students in one of the public higher education institutions in Malaysia. Multiple linear regression analysis was employed to test the hypotheses. The findings from this study indicated that support from friends and significant others is positively related to all dimensions of socio-cultural adjustment and support from family is positively related to cultural empathy. Self-efficacy is positively related to cultural empathy.

  8. Target adjustment and self-other agreement: utilizing trait observability to disentangle judgeability and self-knowledge.

    Science.gov (United States)

    Human, Lauren J; Biesanz, Jeremy C

    2011-07-01

    Are well-adjusted individuals good targets or accurate self-judges? Across two round-robin studies, the current research first demonstrates that well-adjusted individuals' personalities are viewed with greater distinctive self-other agreement by new acquaintances. Is this enhanced self-other agreement a function of greater judgeability, improving others' ability to form an accurate impression? Or is it a function of greater self-knowledge, having a more accurate impression about oneself? By examining the relationship between psychological adjustment and self-other agreement as a function of trait observability, it becomes clear that psychological adjustment fosters self-other agreement through judgeability more so than through self-knowledge. Specifically, well-adjusted individuals provide new acquaintances with greater information regarding their less observable traits, enhancing others' knowledge and thus distinctive self-other agreement. This effect was replicated with close informant-other agreement, indicating that the well-adjusted individual's tendency to make his or her less visible traits more accessible to others allows those who just met the target to agree better with people who know the target well. In sum, although well-adjusted individuals are in part good self-judges, it is their greater judgeability that seems most critical in enhancing self-other agreement in first impressions. PsycINFO Database Record (c) 2011 APA, all rights reserved.

  9. Introducing conjoint analysis method into delayed lotteries studies: Its validity and time stability are higher than in adjusting

    Directory of Open Access Journals (Sweden)

    Michal eBialek

    2015-01-01

    Full Text Available The delayed lotteries are much more common in everyday life than are pure lotteries. Usually, we need to wait to find out the outcome of the risky decision (e.g., investing in a stock market, engaging in a relationship. However, most research has studied the time discounting and probability discounting in isolation using the methodologies designed specifically to track changes in one parameter. Most commonly used method is adjusting, but its reported validity and time stability in research on discounting are suboptimal.The goal of this study was to introduce the novel method for analyzing delayed lotteries - conjoint analysis - which hypothetically is more suitable for analyzing individual preferences in this area. A set of two studies compared the conjoint analysis with adjusting. The results suggest that individual parameters of discounting strength estimated with conjoint have higher predictive value (Study 1 & 2, and they are more stable over time (Study 2 compared to adjusting. We discuss these findings, despite the exploratory character of reported studies, by suggesting that future research on delayed lotteries should be cross-validated using both methods.

  10. Self-Efficacy, Motivation, and Academic Adjustment among African American Women Attending Institutions of Higher Education

    Science.gov (United States)

    Thomas, Deneia M.; Love, Keisha M.; Roan-Belle, Clarissa; Tyler, Keneth M.; Brown, Carrie Lynn; Garriott, Patton O.

    2009-01-01

    This study examined the relationships among self-efficacy beliefs, intrinsic and extrinsic motivation, and academic adjustment among 111 African American women in college. Results revealed that self-efficacy beliefs predicted Motivation to Know, Externally Regulated motivation, Identified motivation, and academic adjustment. Furthermore,…

  11. Academic delay of gratification, self-efficacy, and time management among academically unprepared college students.

    Science.gov (United States)

    Bembenutty, Héfer

    2009-04-01

    This study examined the associations between academic delay of gratification, self-efficacy beliefs, and time management among academically unprepared college students participating in a summer-immersion program. This study also examined whether the relation of self-efficacy with time management is mediated by academic delay of gratification. Analysis indicated that self-efficacy was directly associated with time management, as delay of gratification served to mediate this effect partially. Self-efficacy emerged as the strongest positive predictor of academic achievement.

  12. Design of a Sub-Picosecond Jitter with Adjustable-Range CMOS Delay-Locked Loop for High-Speed and Low-Power Applications

    OpenAIRE

    Abdulrazzaq, Bilal I.; Omar J. Ibrahim; Shoji Kawahito; Sidek, Roslina M.; Suhaidi Shafie; Nurul Amziah Md. Yunus; Lini Lee; Izhal Abdul Halin

    2016-01-01

    A Delay-Locked Loop (DLL) with a modified charge pump circuit is proposed for generating high-resolution linear delay steps with sub-picosecond jitter performance and adjustable delay range. The small-signal model of the modified charge pump circuit is analyzed to bring forth the relationship between the DLL’s internal control voltage and output time delay. Circuit post-layout simulation shows that a 0.97 ps delay step within a 69 ps delay range with 0.26 ps Root-Mean Square (RMS) jitter perf...

  13. Autaptic self-feedback-induced synchronization transitions in Newman-Watts neuronal network with time delays

    Science.gov (United States)

    Wang, Qi; Gong, Yubing; Wu, Yanan

    2015-04-01

    Autapse is a special synapse that connects a neuron to itself. In this work, we numerically study the effect of chemical autapse on the synchronization of Newman-Watts Hodgkin-Huxley neuron network with time delays. It is found that the neurons exhibit synchronization transitions as autaptic self-feedback delay is varied, and the phenomenon enhances when autaptic self-feedback strength increases. Moreover, this phenomenon becomes strongest when network time delay or coupling strength is optimal. It is also found that the synchronization transitions by network time delay can be enhanced by autaptic activity and become strongest when autaptic delay is optimal. These results show that autaptic delayed self-feedback activity can intermittently enhance and reduce the synchronization of the neuronal network and hence plays an important role in regulating the synchronization of the neurons. These findings could find potential implications for the information processing and transmission in neural systems.

  14. Sources of Self-Esteem and the Adjusting Process.

    Science.gov (United States)

    Tuttle, Dean W.

    The paper examines the impact of a visual disorder on the emerging self. Sources of self-esteem are considered in the developmental process. The implications of a competence model in regard to the experiences of visually impaired persons are noted. Problems to be resolved include developing coping skills and adaptive behaviors, maintaining…

  15. Self-esteem is associated with premorbid adjustment and positive psychotic symptoms in early psychosis

    Directory of Open Access Journals (Sweden)

    Haug Elisabeth

    2011-08-01

    Full Text Available Abstract Background Low levels of self-esteem have been implicated as both a cause and a consequence of severe mental disorders. The main aims of the study were to examine whether premorbid adjustment has an impact on the subject's self-esteem, and whether lowered self-esteem contributes to the development of delusions and hallucinations. Method A total of 113 patients from the Thematically Organized Psychosis research study (TOP were included at first treatment. The Positive and Negative Syndrome Scale (PANSS was used to assess present symptoms. Premorbid adjustment was measured with the Premorbid Adjustment Scale (PAS and self-esteem by the Rosenberg Self-Esteem Scale (RSES. Results Premorbid social adjustment was significantly related to lower self-esteem and explained a significant proportion of the variance in self-esteem. Self-esteem was significantly associated with the levels of persecutory delusions and hallucinations experienced by the patient and explained a significant proportion of the variance even after adjusting for premorbid functioning and depression. Conclusion There are reasons to suspect that premorbid functioning is an important aspect in the development of self- esteem, and, furthermore, that self-esteem is associated with the development of delusions and hallucinations.

  16. Is it really self-control? Examining the predictive power of the delay of gratification task.

    Science.gov (United States)

    Duckworth, Angela L; Tsukayama, Eli; Kirby, Teri A

    2013-07-01

    This investigation tests whether the predictive power of the delay of gratification task (colloquially known as the "marshmallow test") derives from its assessment of self-control or of theoretically unrelated traits. Among 56 school-age children in Study 1, delay time was associated with concurrent teacher ratings of self-control and Big Five conscientiousness-but not with other personality traits, intelligence, or reward-related impulses. Likewise, among 966 preschool children in Study 2, delay time was consistently associated with concurrent parent and caregiver ratings of self-control but not with reward-related impulses. While delay time in Study 2 was also related to concurrently measured intelligence, predictive relations with academic, health, and social outcomes in adolescence were more consistently explained by ratings of effortful control. Collectively, these findings suggest that delay task performance may be influenced by extraneous traits, but its predictive power derives primarily from its assessment of self-control.

  17. Relation of self-concept in kindergarten and first grade to school adjustment.

    Science.gov (United States)

    Zafiropoulou, Maria; Sotiriou, Apostolos; Mitsiouli, Vasiliki

    2007-06-01

    The present aim was to investigate changes in self-concept and self-concept stability during children's transition from kindergarten to primary school, and the relationship between children's self-concept and their adjustment to elementary school. 346 children took part in this 2-yr. longitudinal study. The Pictorial Scale of Perceived Competence and Social Acceptance for Young Children was used to assess children's self-concept. Children's school adjustment was assessed using the schools' academic, behavioral, and social-emotional procedures. Children's self-concept appeared relatively stable and the decline in scores appeared to be practically unimportant. Analysis showed that children's school adjustment mainly affects the academic dimension of self-concept.

  18. The "self" in pain : exploring the role of coping style in chronic pain adjustment

    OpenAIRE

    2015-01-01

    The devastating impacts of chronic pain include not only disability and emotional distress, but also challenges to patients’ sense of self. Patients experience self-discrepancy when they believe that they can no longer fulfill their hopes or responsibilities. While the impact of self-discrepancy on patients’ chronic pain adjustment has been widely examined, the underlying mechanism is still unclear. The present study therefore aimed to first examine the causal relationship between self-discre...

  19. Exchanging the liquidity hypothesis: Delay discounting of money and self-relevant non-money rewards.

    Science.gov (United States)

    Stuppy-Sullivan, Allison M; Tormohlen, Kayla N; Yi, Richard

    2016-01-01

    Evidence that primary rewards (e.g., food and drugs of abuse) are discounted more than money is frequently attributed to money's high degree of liquidity, or exchangeability for many commodities. The present study provides some evidence against this liquidity hypothesis by contrasting delay discounting of monetary rewards (liquid) and non-monetary commodities (non-liquid) that are self-relevant and utility-matched. Ninety-seven (97) undergraduate students initially completed a conventional binary-choice delay discounting of money task. Participants returned one week later and completed a self-relevant commodity delay discounting task. Both conventional hypothesis testing and more-conservative tests of statistical equivalence revealed correspondence in rate of delay discounting of money and self-relevant commodities, and in one magnitude condition, less discounting for the latter. The present results indicate that liquidity of money cannot fully account for the lower rate of delay discounting compared to non-money rewards.

  20. Relations between Self Regulation, Future Time Perspective and the Delay of Gratification in University Students

    Science.gov (United States)

    Avci, Suleyman

    2013-01-01

    The present study was conducted on 508 (331 female, 144 male) first grade university students in order to investigate the relations between self regulation, the future time perspectives, and the delay of gratification in the academic field. A future time perspective scale, an academic delay of gratification scale and a motivational strategies for…

  1. Anisotropy modulations of femtosecond laser pulse induced periodic surface structures on silicon by adjusting double pulse delay.

    Science.gov (United States)

    Han, Weina; Jiang, Lan; Li, Xiaowei; Wang, Qingsong; Li, Hao; Lu, YongFeng

    2014-06-30

    We demonstrate that the polarization-dependent anisotropy of the laser-induced periodic surface structure (LIPSS) on silicon can be adjusted by designing a femtosecond laser pulse train (800 nm, 50 fs, 1 kHz). By varying the pulse delay from 100 to 1600 fs within a double pulse train to reduce the deposited pulse energy, which weakens the directional surface plasmon polarition (SPP)-laser energy coupling based on the initial formed ripple structure, the polarization-dependent geometrical morphology of the LIPSS evolves from a nearly isotropic circular shape to a somewhat elongated elliptical shape. Meanwhile, the controllable anisotropy of the two-dimensional scanned-line widths with different directions is achieved based on a certain pulse delay combined with the scanning speed. This can effectively realize better control over large-area uniform LIPSS formation. As an example, we further show that the large-area LIPSS can be formed with different scanning times under different pulse delays.

  2. Postglacial isostatic adjustment in a self-gravitating spherical earth with power-law rheology

    Science.gov (United States)

    Wu, Patrick; Wang, Hansheng

    2008-10-01

    Since microphysics cannot say definitively whether the rheology of the mantle is linear or non-linear, the aim of this paper is to constrain mantle rheology from observations related to the glacial isostatic adjustment (GIA) process—namely relative sea-levels (RSLs), land uplift rate from GPS and gravity-rate-of-change from GRACE. We consider three earth model types that can have power-law rheology ( n = 3 or 4) in the upper mantle, the lower mantle or throughout the mantle. For each model type, a range of A parameter in the creep law will be explored and the predicted GIA responses will be compared to the observations to see which value of A has the potential to explain all the data simultaneously. The coupled Laplace finite-element (CLFE) method is used to calculate the response of a 3D spherical self-gravitating viscoelastic Earth to forcing by the ICE-4G ice history model with ocean loads in self-gravitating oceans. Results show that ice thickness in Laurentide needs to increase significantly or delayed by 2 ka, otherwise the predicted uplift rate, gravity rate-of-change and the amplitude of the RSL for sites inside the ice margin of Laurentide are too low to be able to explain the observations. However, the ice thickness elsewhere outside Laurentide needs to be slightly modified in order to explain the global RSL data outside Laurentide. If the ice model is modified in this way, then the results of this paper indicate that models with power-law rheology in the lower mantle (with A ˜ 10 -35 Pa -3 s -1 for n = 3) have the highest potential to simultaneously explain all the observed RSL, uplift rate and gravity rate-of-change data than the other model types.

  3. Early Childhood Profiles of Sleep Problems and Self-Regulation Predict Later School Adjustment

    Science.gov (United States)

    Williams, Kate E.; Nicholson, Jan M.; Walker, Sue; Berthelsen, Donna

    2016-01-01

    Background: Children's sleep problems and self-regulation problems have been independently associated with poorer adjustment to school, but there has been limited exploration of longitudinal early childhood profiles that include both indicators. Aims: This study explores the normative developmental pathway for sleep problems and self-regulation…

  4. Relation between Assertiveness, Academic Self-Efficacy, and Psychosocial Adjustment among International Graduate Students.

    Science.gov (United States)

    Poyrazli, Senel; Arbona, Consuelo; Nora, Amaury; McPherson, Robert; Pisecco, Stewart

    2002-01-01

    Rathus Assertiveness Schedule, Academic Self-Efficacy Scale, The Inventory for Student Adjustment Strain, and UCLA Loneliness Scale were used to examine a total of 122 graduate international students. Findings indicate that English proficiency, assertiveness, and academic self-efficacy contributed uniquely to the variance in students' general…

  5. Differentiation of Self, Personal Adjustment, Problem Solving, and Ethnic Group Belonging among Persons of Color.

    Science.gov (United States)

    Skowron, Elizabeth A.

    2004-01-01

    This study focused on examining the cross-cultural validity of Bowen family systems theory (M. Bowen, 1978), namely differentiation of self for individuals of color. Ethnic minority men and women completed measures of differentiation of self, ethnic group belonging, and 3 indices of personal adjustment. Initial support for the cross-cultural…

  6. Prospective prediction of college adjustment using self- and informant-rated personality traits.

    Science.gov (United States)

    Kurtz, John E; Puher, Meredith A; Cross, Nicole A

    2012-01-01

    Studies that relate normal personality traits to students' adjustment to college have relied heavily on self-rating methods, concurrent designs, and academic performance indicators as criteria. We conducted a prospective study of high school seniors with a follow-up assessment made near the end of their freshman year of college. Self-ratings of personality traits and college adjustment were obtained from 90 students using the revised NEO personality inventory (NEO PI-R; Costa & McCrae, 1992) and the student adaptation to college questionnaire (SACQ; Baker & Siryk, 1989 ). Ratings of personality were also obtained from parents (n = 66) and same-sex peers from the college setting (n = 78) using the NEO five-factor inventory (NEO-FFI; Costa & McCrae, 1992 ). SACQ academic adjustment was correlated with conscientiousness ratings by all three sources and with openness ratings by parents and peers. SACQ Social Adjustment was correlated with self-ratings of neuroticism and peer ratings of extraversion. SACQ personal-emotional adjustment was correlated with self-ratings and parent ratings of neuroticism. Ratings by parents and peers showed significant incremental validity over self-ratings in the prediction of certain trait-adjustment relationships.

  7. Behavioral adjustment and self-esteem of school-age children of women with breast cancer.

    Science.gov (United States)

    Armsden, G C; Lewis, F M

    1994-01-01

    To describe children's psychosocial adjustment to their mother's breast cancer and to compare their level of adjustment with normative data and with the level of adjustment of children of women with fibrocystic breast disease or diabetes. Hypotheses tested were (a) children of women with breast cancer would be most negatively affected and (b) families of mothers with fibrocystic breast disease would require less family adaptation than families of women with breast cancer or diabetes. One component of a larger longitudinal survey. University-based physician clinic in a metropolitan area in the Northwestern United States. Mothers, predominantly Caucasian, with medically controlled diabetes mellitus (n = 18), nonmetastatic breast cancer (n = 13), or biopsy-proven fibrocystic breast disease (n = 17) and their children (N = 48), who ranged in age from 6 to 12. Five in-home interviews conducted at four-month intervals. Behavioral adjustment using the Louisville Behavior Checklist (maternal report) and the Zeitlin Coping Inventory (nurse-observer report) and self-esteem using the Personal Attribute Inventory for Children (children's self-report). Children of women with breast cancer scored better than average on behavioral adjustment (mothers' ratings) and were judged by nurse observers to be better behaviorally adjusted than children in the noncancer illness groups. Children of women with breast cancer and of women with diabetes tended to score significantly lower on self-esteem than the comparative sample. Measures of childhood adjustment to chronic medical illness in mothers need to distinguish between behavioral adjustment and self-esteem. Discrepancies between child ratings and mother and nurse-observer ratings suggest that differences exist. Findings are preliminary in nature, and other explanations for findings must be ruled out. However, if a child's self-appraisal is affected negatively by the mother's illness, it would be appropriate to identify ways to increase

  8. DESIGN OF TRANSITION TIME ADJUSTMENT TECHNIQUE FOR REDUCING BUS DELAY EFFECTS ON NOC INTERCONNECTS

    Directory of Open Access Journals (Sweden)

    MEERA K S

    2013-04-01

    Full Text Available To meet the growing computation-intensive applications the number of computing resources in single-chip has enormously increased, because current VLSI technology can support such an extensive integration of transistors. By adding many computing resources such as CPU, DSP, specific IPs, etc to build a system in System-on-Chip, its interconnection between each other becomes another challenging issue. In most System-on-Chip applications, a shared bus interconnection which needs arbitration logic to serialize several bus access requests, is adopted to communicate with each integrated processing unit because of its low-cost and simple control characteristics. However, such shared bus interconnection has some limitation in its scalability because only one master at a time can utilize the bus which means all the bus accesses should be serialized by the arbitrator. Therefore, in such an environment where the number of bus requesters is large and their required bandwidth for interconnection is more than the current bus, some other interconnection methods should be considered. Such scalable bandwidth requirement can be satisfied by using on-chip packet-switched micro-network of interconnects, generally known as Network-on-Chip (NoC architecture. It suffers however from increasingly serious interconnect crosstalk effects, which constrain the overall performance of NOC systems. In this paper some delay tolerance methods are proposed.

  9. Self-aligning concave relativistic plasma mirror with adjustable focus

    CERN Document Server

    Tsai, Hai-En; Shaw, Joseph M; Stark, David J; Wang, Xiaoming; Zgadzaj, Rafal; Downer, M C

    2016-01-01

    We report an experimental-computational study of the optical properties of plasma mirrors (PMs) at the incident laser frequency when irradiated directly at relativistic intensity (1e18 < I_0 < 1e19 W/cm^2) by near-normally incident (4 degree), high-contrast, 30 fs, 800 nm laser pulses. We find that such relativistic PMs are highly reflective (0.6 to 0.8), and focus a significant fraction of reflected light to intensity as large as 10I_0 at distance f as small 25 microns from the PM, provided that pre-pulses do not exceed 1e14 W/cm^2 prior to 20 ps before arrival of the main pulse peak. Particle-in-cell simulations show that focusing results from denting of the reflecting surface by light pressure combined with relativistic transparency, and that reflectivity and f can be adjusted by controlling pre-plasma length L over the range 0.5 < L < 3 microns. Pump-probe reflectivity measurements show the PM's focusing properties evolve on a ps time scale.

  10. Self-Reported and Measured BMI in Ireland: Should We Adjust the Obesity Thresholds?

    OpenAIRE

    Madden, David

    2013-01-01

    Using the nationally representative Slan dataset of 2007 we analyse the relationship between self-reported and measured BMI. We find that self-reported BMI significantly underestimates obesity rates and suggest that the traditional threshold of 30 should be adjusted downwards. We outline a number of approaches to choose the optimal threshold and results suggest that the new obesity threshold for self-reported BMI could be as low as 26.

  11. Self-esteem is associated with premorbid adjustment and positive psychotic symptoms in early psychosis

    OpenAIRE

    Haug Elisabeth; Hansen Charlotte; Rossberg Jan; Romm Kristin; Andreassen Ole A; Melle Ingrid

    2011-01-01

    Background Low levels of self-esteem have been implicated as both a cause and a consequence of severe mental disorders. The main aims of the study were to examine whether premorbid adjustment has an impact on the subject's self-esteem, and whether lowered self-esteem contributes to the development of delusions and hallucinations. Method A total of 113 patients from the Thematically Organized Psychosis...

  12. Influence of adult attachment insecurities on parenting self-esteem: The mediating role of dyadic adjustment

    OpenAIRE

    Vincenzo eCalvo; Francesca eBianco

    2015-01-01

    Background: Parenting self-esteem includes two global components, parents’ self-efficacy and satisfaction with their parental role, and has a crucial role in parent-child interactions. The purpose of this study was to develop an integrative model linking adult attachment insecurities, dyadic adjustment, and parenting self-esteem.Methods: The study involved 118 pairs (236 subjects) of heterosexual parents of a firstborn child aged 0 to 6 years. They were administered the Experiences in Close R...

  13. Conceptualizing and measuring illness self-concept: a comparison with self-esteem and optimism in predicting fibromyalgia adjustment.

    Science.gov (United States)

    Morea, Jessica M; Friend, Ronald; Bennett, Robert M

    2008-12-01

    Illness self-concept (ISC), or the extent to which individuals are consumed by their illness, was theoretically described and evaluated with the Illness Self-Concept Scale (ISCS), a new 23-item scale, to predict adjustment in fibromyalgia. To establish convergent and discriminant validity, illness self-concept was compared to self-esteem and optimism in predicting health status, illness intrusiveness, depression, and life satisfaction. The ISCS demonstrated good reliability (alpha = .94; test-retest r = .80) and was a strong predictor of outcomes, even after controlling for optimism or self-esteem. The ISCS predicted unique variance in health-related outcomes; optimism and self-esteem did not, providing construct validation. Illness self-concept may play a significant role in coping with fibromyalgia and may prove useful in the evaluation of other chronic illnesses. (c) 2008 Wiley Periodicals, Inc.

  14. Design of a Sub-Picosecond Jitter with Adjustable-Range CMOS Delay-Locked Loop for High-Speed and Low-Power Applications

    Directory of Open Access Journals (Sweden)

    Bilal I. Abdulrazzaq

    2016-09-01

    Full Text Available A Delay-Locked Loop (DLL with a modified charge pump circuit is proposed for generating high-resolution linear delay steps with sub-picosecond jitter performance and adjustable delay range. The small-signal model of the modified charge pump circuit is analyzed to bring forth the relationship between the DLL’s internal control voltage and output time delay. Circuit post-layout simulation shows that a 0.97 ps delay step within a 69 ps delay range with 0.26 ps Root-Mean Square (RMS jitter performance is achievable using a standard 0.13 µm Complementary Metal-Oxide Semiconductor (CMOS process. The post-layout simulation results show that the power consumption of the proposed DLL architecture’s circuit is 0.1 mW when the DLL is operated at 2 GHz.

  15. Design of a Sub-Picosecond Jitter with Adjustable-Range CMOS Delay-Locked Loop for High-Speed and Low-Power Applications.

    Science.gov (United States)

    Abdulrazzaq, Bilal I; Ibrahim, Omar J; Kawahito, Shoji; Sidek, Roslina M; Shafie, Suhaidi; Yunus, Nurul Amziah Md; Lee, Lini; Halin, Izhal Abdul

    2016-09-28

    A Delay-Locked Loop (DLL) with a modified charge pump circuit is proposed for generating high-resolution linear delay steps with sub-picosecond jitter performance and adjustable delay range. The small-signal model of the modified charge pump circuit is analyzed to bring forth the relationship between the DLL's internal control voltage and output time delay. Circuit post-layout simulation shows that a 0.97 ps delay step within a 69 ps delay range with 0.26 ps Root-Mean Square (RMS) jitter performance is achievable using a standard 0.13 µm Complementary Metal-Oxide Semiconductor (CMOS) process. The post-layout simulation results show that the power consumption of the proposed DLL architecture's circuit is 0.1 mW when the DLL is operated at 2 GHz.

  16. Strategies of delayed self-pollination in Kosteletzkya virginica

    Institute of Scientific and Technical Information of China (English)

    RUAN Chengjiang; QIN Pei; HAN Ruiming

    2005-01-01

    @@ Though in the face of selection against self-pollina-tion, mixed pollination systems are maintained in many plants. The transition from outcrossing to self-fertilization is one of the most common evolutionary trends in angio-sperms[1]. Floral morphological characters and behavior influence plant pollination mode and reproductive success, such as herkogamy[2,3], dichogamy[2,3], floral movement, and corolla abscission[4-6]. If a plant population relies solely on animal vectors to move pollen among individu-als and if pollinators are absent or in low numbers at cer-tain times or years, individuals that can self-pollinate if not previously outcrossed will be at a selective advantage[7].

  17. Effects of time-delayed feedback on the properties of self-sustained oscillators

    Science.gov (United States)

    Risau-Gusman, S.

    2016-10-01

    Most self-sustained oscillations in biological systems and in technical applications are based on a feedback loop, and it is usually important to know how they will react when an external oscillatory force is applied. Here we investigate the effects that the introduction of a time delay in the feedback can have in the entrainment properties of self-sustained oscillators. To do this, we derive analytic expressions for the periodic trajectories and their asymptotic stability, for a generic external oscillatory force. This allows us to show that, for large quality factors, the resonance frequency does not depend on the feedback delay. When the external force is harmonic, it is shown that the largest entrainment range does not correspond to the time delay that gives the maximal response of the unforced oscillator. In fact, that delay gives the shortest entrainment range.

  18. Adjustment to Diabetes Among Diabetic Patients: The Roles of Social Support and Self-Efficacy

    Directory of Open Access Journals (Sweden)

    Yazdi-Ravandi

    2016-02-01

    Full Text Available Background Controlling diabetes requires management of the relationship between the patient and the initial attention team. Social and environmental factors lead to lifestyle variations in relation to the health care, community support, and social support received. Theess areas have an effect upon patients’ self-organization and self-efficacy. Self-efficacy can be recognized objectively as one of the strongest predictors of a patient’s physical condition, causing behavior variations. It can be defined as an individual’s level of trust in his/her ability to adopt a particular kind of behavior. Objectives The aim of this study is to examine the roles of social support and self-efficacy in predicting the level of adjustment to living with diabetes in diabetic patients. Patients and Methods In this cross-sectional study, we investigated the ability to predict diabetic patients’ adjustment to diabetes through analyzing levels of social support and self-efficacy. The population used for this survey was a random sample of 167 diabetic patients, who were dependent on insulin injections. The participants were 18 to 60 years old and had been members of the Iranian Diabetes Society since 2014. They were asked to complete Sullivan’s “adjustment to diabetes” test, and were examined using 1 Zimet’s Multidimensional Scale of social support and 2 the Coping Self-efficacy scale for confrontation of problems. Data analysis was performed using the SPSS (version 16 statistical software package, for which Pearson’s correlation test and the multiple regression method (linear method were used. Results The data revealed that self-efficacy (P < 0.001 and social support (P < 0.001 are indicators than can significantly anticipate levels of adjustment in diabetic patients. Moreover, it has been revealed that self-efficiency plays a significant and, indeed, fundamental role in adjustment anticipation. Conclusions It can be concluded that self-efficacy and

  19. Peer Attachment, Perceived Parenting Style, Self-concept, and School Adjustments in Adolescents with Chronic Illness.

    Science.gov (United States)

    Ahn, Jeong-Ah; Lee, Sunhee

    2016-12-01

    The purpose of this study was to identify how peer attachment and parenting style differentially affect self-concept and school adjustment in adolescents with and without chronic illness. A cross-sectional study using multiple group analysis on the Korean panel data was used. A nationwide stratified multistage cluster sampling method was used and the survey was conducted in 2013 on 2,092 first-year middle school students in Korea. We used standardized instruments by the National Youth Policy Institute to measure peer attachment, parenting style, self-concept, and school adjustment. Multiple-group structural equation modeling was used to evaluate the difference of relations for peer attachment, parenting style, self-concept, and school adjustment variable between adolescents with chronic illness and those without chronic illness. The model fit of a multiple-group structural equation modeling was good. The difference of the path from negative parenting style to self-concept between the two groups was significant, and a significant between-group difference in the overall path was found. This indicated that self-concept in adolescents with chronic illness was more negatively affected by negative parenting style than in adolescents without chronic illness. Healthcare providers can promote the process of school adjustment in several ways, such as discussing this issue directly with adolescent patients, along with their parents and peers, examining how the organization and content of the treatment can be modified according to the adolescents' school life. Copyright © 2016. Published by Elsevier B.V.

  20. Self-regulation strategies may enhance the acute effect of exercise on smoking delay.

    Science.gov (United States)

    Hatzigeorgiadis, Antonis; Pappa, Vassiliki; Tsiami, Anastasia; Tzatzaki, Theodora; Georgakouli, Kalliopi; Zourbanos, Nikos; Goudas, Marios; Chatzisarantis, Nikos; Theodorakis, Yannis

    2016-06-01

    The present study examined the acute effect of a moderate intensity aerobic exercise session combined with self-regulation on smoking delay in physically inactive smokers. Participants were 11 adults (5 males and 6 females) that completed three experimental conditions: control, exercise, and exercise using self-regulation strategies (SR). Following the experimental treatment smoking for the two exercise conditions delayed significantly more than for the control condition; in addition exercise SR delayed smoking marginally more that the plain exercise condition. Findings supported previous research that acute exercise reduces cravings to smoke, and suggests that the use of self-regulation strategies may strengthen exercise for smoking cessation interventions. Copyright © 2016 Elsevier Ltd. All rights reserved.

  1. Influence of adult attachment insecurities on parenting self-esteem: the mediating role of dyadic adjustment.

    Science.gov (United States)

    Calvo, Vincenzo; Bianco, Francesca

    2015-01-01

    Parenting self-esteem includes two global components, parents' self-efficacy and satisfaction with their parental role, and has a crucial role in parent-child interactions. The purpose of this study was to develop an integrative model linking adult attachment insecurities, dyadic adjustment, and parenting self-esteem. The study involved 118 pairs (236 subjects) of heterosexual parents of a firstborn child aged 0-6 years. They were administered the Experiences in Close Relationships-Revised (ECR-R) questionnaire, the Dyadic Adjustment Scale, and the Parenting Sense of Competence Scale. Path analysis was used to design and test a theoretical integrative model, achieving a good fit with the data. Findings showed that dyadic adjustment mediates the negative influence on parenting self-efficacy of both attachment anxiety and attachment avoidance. Parenting satisfaction is positively influenced by parenting self-efficacy and negatively affected by child's age. Attachment anxiety negatively influences parenting satisfaction. Our findings are in line with the theoretical expectations and have promising implications for future research and intervention programs designed to improve parenting self-esteem.

  2. Influence of adult attachment insecurities on parenting self-esteem: The mediating role of dyadic adjustment

    Directory of Open Access Journals (Sweden)

    Vincenzo eCalvo

    2015-09-01

    Full Text Available Background: Parenting self-esteem includes two global components, parents’ self-efficacy and satisfaction with their parental role, and has a crucial role in parent-child interactions. The purpose of this study was to develop an integrative model linking adult attachment insecurities, dyadic adjustment, and parenting self-esteem.Methods: The study involved 118 pairs (236 subjects of heterosexual parents of a firstborn child aged 0 to 6 years. They were administered the Experiences in Close Relationships – Revised (ECR-R questionnaire, the Dyadic Adjustment Scale (DAS, and the Parenting Sense of Competence Scale (PSOC.Results: Path analysis was used to design and test a theoretical integrative model, achieving a good fit with the data. Findings showed that dyadic adjustment mediates the negative influence on parenting self-efficacy of both attachment anxiety and attachment avoidance. Parenting satisfaction is positively influenced by parenting self-efficacy and negatively affected by child’s age. Attachment anxiety negatively influences parenting satisfaction. Conclusion: Our findings are in line with the theoretical expectations and have promising implications for future research and intervention programs designed to improve parenting self-esteem.

  3. Enhancing self-care, adjustment and engagement through mobile phones in youth with HIV.

    Science.gov (United States)

    John, M E; Samson-Akpan, P E; Etowa, J B; Akpabio, I I; John, E E

    2016-12-01

    To evaluate the effectiveness of mobile phones in enhancing self-care, adjustment and engagement in non-disclosed youth living with HIV. Youth aged 15-24 years represent 42% of new HIV infections globally. Youth who are aware of their HIV status generally do not disclose it or utilize HIV-related facilities because of fear of stigma. They rely on the Internet for health maintenance information and access formal care only when immune-compromised and in crisis. This study shows how non-disclosed youth living with HIV can be reached and engaged for self-management and adjustment through mobile phone. One-group pre-test/post-test experimental design was used. Mobile phones were used to give information, motivation and counselling to 19 purposively recruited non-disclosed youth with HIV in Calabar, South-South Nigeria. Psychological adjustment scale, modified self-care capacity scale and patient activation measure were used to collect data. Data were analysed using PASW 18.0. Scores on self-care capacity, psychological adjustment and engagement increased significantly at post-test. HIV-related visits to health facilities did not improve significantly even at 6 months. Participants still preferred to consult healthcare providers for counselling through mobile phone. Mobile phone-based interventions are low cost, convenient, ensure privacy and are suitable for youth. Such remote health counselling enhances self-management and positive living. Mobile phones enhance self-care, psychological adjustment and engagement in non-disclosed youth living with HIV, and can be used to increase care coverage. Findings underline the importance of policies to increase access by locating, counselling and engaging HIV-infected youth in care. © 2016 International Council of Nurses.

  4. Self-Esteem and Adjusting with Blindness: The Process of Responding to Life's Demands. Third Edition

    Science.gov (United States)

    Tuttle, Dean W.; Tuttle, Naomi R.

    2004-01-01

    This new and expanded Third Edition analyzes blindness within the context of two overlapping theoretical constructs: the development of self-esteem and the process of adjusting to social and/or physical trauma. The book is divided into four sections. The first section, provides an overview of blindness and the essential background for subsequent…

  5. Technology Enabled Work: The Role of Self-Efficacy in Determining Telecommuter Adjustment and Structuring Behavior.

    Science.gov (United States)

    Raghuram, Sumita; Wiesenfeld, Batia; Garud, Raghu

    2003-01-01

    Responses from 31.5% of 723 telecommuters revealed a positive association between self-efficacy and both adjustment to teleworking and behaviors for structuring work. The more extensive the telecommuting, the stronger these positive relationships. Women were more proactive in structuring work behavior. (Contains 43 references.) (SK)

  6. Removal of gutta-percha from root canals using the self-adjusting file

    NARCIS (Netherlands)

    Voet, K.C.; Wu, M.K.; Wesselink, P.R.; Shemesh, H.

    2012-01-01

    Introduction The aim of this study was to compare the percentage of the residual gutta-percha-occupied area (PRGPA) in root canals after retreatment using ProTaper retreatment files (Dentsply Maillefer, Ballaigues, Switzerland) with or without the additional use of Self-Adjusting Files (SAFs; ReDent

  7. Effects of Self-Adjusting File, Mtwo, and ProTaper on the root canal wall

    NARCIS (Netherlands)

    Hin, E.S.; Wu, M.K.; Wesselink, P.R.; Shemesh, H.

    2013-01-01

    Introduction The purpose of this ex vivo study was to observe the incidence of cracks in root dentin after root canal preparation with hand files, self-adjusting file (SAF), ProTaper, and Mtwo. Methods One hundred extracted mandibular premolars with single canals were randomly selected. Two angulate

  8. Preschoolers' Self-Regulation Moderates Relations between Mothers' Representations and Children's Adjustment to School

    Science.gov (United States)

    Sher-Censor, Efrat; Khafi, Tamar Y.; Yates, Tuppett M.

    2016-01-01

    Consistent with models of environmental sensitivity (Pluess, 2015), research suggests that the effects of parents' behaviors on child adjustment are stronger among children who struggle to regulate their thoughts, feelings, and behaviors compared with children with better self-regulation. This study extended prior research by assessing maternal…

  9. THE INFLUENCE OF STUDENTS’ PERCEPTION ON SOCIAL INFORMATION SERVICES AND INDEPENDENCE TO SELF ADJUSTMENT

    Directory of Open Access Journals (Sweden)

    Abdul Kholiq

    2017-02-01

    Full Text Available Abstract   The phenomenon that occurs is the seventh grade students of SMP N 22 Semarang has an average adaptability 70%, while the services of social information has been provided by the teacher of guidance and counseling regularly. In addition there is a significant difference in the level of student independence. The purpose of this study is to determine and analyze the influence of students' perception on social information services and independence to self adjustment seventh grade students of SMP N 22 Semarang. This research is an ex post facto with quantitative approach. The study population numbered 240 students sample taken by purposive sampling technique. Collecting data using psychological scale were tested for its validity and reliability. The data analysis used is simple and multiple linear regression. The results are (1 Perceptions of students on social information services influences self adjustment, (2 Independence influences self adjustment, and (3 Perceptions of students on social information services and independence influences self adjustment. Based on these results it can be predicted that the higher level of students' perceptions on the service of social information and independence, the adaptability of students will be increased. Therefore, it is suggested that teachers of guidance and counseling should provide services that fit the needs of students so that students have a better perception on social information services and also they should foster students' independence.

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

    Science.gov (United States)

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

    2011-12-01

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

  11. Parental Attachment and Adolescents' Perception of School Alienation: The Mediation Role of Self-Esteem and Adjustment.

    Science.gov (United States)

    Kocayörük, Ercan; Şimşek, Ömer Faruk

    2016-01-01

    The present study examined the relationship between adolescents' attachment to parents and their feelings of alienation in the school context by considering the mediating role of adjustment and self-esteem. It was proposed that the degree of attachment to one's parents was associated with adjustment and self-esteem, which in turn predicted possible school alienation. A total of 227 students completed self-report measures on parental attachment, adjustment, self-esteem, and alienation from school. Results were consistent with the attachment theory and related literature that posits that (a) secure attachment to parents was associated with adjustment and self-esteem, (b) secure attachment to parents was negatively associated with feelings of school alienation, and (c) adjustment and self-esteem were a crucial mediators between attachment to parents and school alienation. In addition to enhanced adjustment, the self-esteem of adolescents may be an additional factor in reducing alienation at school. The results also supported the mediator role of self-esteem in the relationship between attachment to parents and adjustment. Finally, the relationship between self-esteem and school alienation were shown to be fully mediated by adjustment. The results were discussed in the context of responsibilities of teachers and school counselors, which may provide both students and parents with the skills to improve social functioning in the school context.

  12. From Self-Theories of Intelligence to Academic Delay of Gratification: The Mediating Role of Achievement Goals

    Science.gov (United States)

    Abd-El-Fattah, Sabry M.; AL-Nabhani, Hilal Z.

    2012-01-01

    This study examined the relationships among implicit self-theories, achievement goals, and academic delay of gratification. Do achievement goals mediate the relationship between implicit self-theories and academic delay of gratification? A sample of 195 Omani high school students rated themselves on three measures tapping these constructs. A path…

  13. Social desirability effects on measures of adjustment to university, independence from parents, and self-efficacy.

    Science.gov (United States)

    Silverthorn, N A; Gekoski, W L

    1995-03-01

    Results of regression analyses on data from 96 first-year undergraduates indicated that social desirability (Jackson and Marlowe-Crowne Social Desirability Scales), particularly scores on the Jackson scale, is related strongly to scores on measures of adjustment (Student Adaptation to College Questionnaire), self-efficacy (Hale-Fibel Generalized Expectation for Success Scale), and independence (Psychological Separation Inventory) from mother, but not from father. In addition, both the Jackson and Marlowe-Crowne scales were correlated highly. Independence from parents and self-efficacy each continued to show a relationship with adjustment to university after social desirability effects were removed. Failure to remove the effect(s) of social desirability from the present measures is likely to lead to inflated estimates of their relation to each other or to other measures.

  14. The (1+λ) evolutionary algorithm with self-adjusting mutation rate

    DEFF Research Database (Denmark)

    Doerr, Benjamin; Witt, Carsten; Gießen, Christian

    2017-01-01

    is then updated to the rate used in that subpopulation which contains the best offspring. We analyze how the (1 + A) evolutionary algorithm with this self-adjusting mutation rate optimizes the OneMax test function. We prove that this dynamic version of the (1 + A) EA finds the optimum in an expected optimization...... time (number of fitness evaluations) of O(nA/log A + n log n). This time is asymptotically smaller than the optimization time of the classic (1 + A) EA. Previous work shows that this performance is best-possible among all A-parallel mutation-based unbiased black-box algorithms. This result shows......We propose a new way to self-adjust the mutation rate in population-based evolutionary algorithms. Roughly speaking, it consists of creating half the offspring with a mutation rate that is twice the current mutation rate and the other half with half the current rate. The mutation rate...

  15. Dating violence and self-efficacy for delayed sex among adolescents in Cape Town, South Africa.

    Science.gov (United States)

    Boafo, Isaac M; Dagbanu, Emmanuel A; Asante, Kwaku Oppong

    2014-06-01

    In South Africa, dating violence is known to be widespread among adolescents, and is therefore a major public health issue because of its association with sexual risk behaviours. The objective of the study was to examine the relationship between dating violence and self-efficacy for delayed sex among school-going adolescents in Cape Town, South Africa. The study is based on analyses of data from a school-based health education programme targeting sexual and reproductive health issues.The study involved 3,655 school-going adolescents aged between 12 and 17 in Cape Town, South Africa. The data was collected by means of a self-administered questionnaire composed of 153 items on sexual and reproductive health, dating violence as well as sociodemographic characteristics. The results indicated that males showed a higher percentage of both dating violence victimization and perpetration, as compared to females. It was also found that adolescents from lower socio-economic backgrounds were more likely to be the victims of dating violence as compared to those from a higher socio-economic background. Female learners showed higher levels of self-efficacy for delayed sex than their male counterparts. Although the result revealed that there was a significant association between self-efficacy for delayed sex and socio-economic status, this link decreased with age. It is concluded that educational programmes aimed solely at improving self-efficacy for delayed sex is insufficient. Such programmes must also aim at preventing dating violence and equipping adolescents with the skills to negotiate their way out of dating violence.

  16. Self-discrepancies in work-related upper extremity pain: relation to emotions and flexible-goal adjustment.

    Science.gov (United States)

    Goossens, Mariëlle E; Kindermans, Hanne P; Morley, Stephen J; Roelofs, Jeffrey; Verbunt, Jeanine; Vlaeyen, Johan W

    2010-08-01

    Recurrent pain not only has an impact on disability, but on the long term it may become a threat to one's sense of self. This paper presents a cross-sectional study of patients with work-related upper extremity pain and focuses on: (1) the role of self-discrepancies in this group, (2) the associations between self-discrepancies, pain, emotions and (3) the interaction between self-discrepancies and flexible-goal adjustment. Eighty-nine participants completed standardized self-report measures of pain intensity, pain duration, anxiety, depression and flexible-goal adjustment. A Selves Questionnaire was used to generate self-discrepancies. A series of hierarchical regression analyses showed relationships between actual-ought other, actual-ought self, actual-feared self-discrepancies and depression as well as a significant association between actual-ought other self-discrepancy and anxiety. Furthermore, significant interactions were found between actual-ought other self-discrepancies and flexibility, indicating that less flexible participants with large self-discrepancies score higher on depression. This study showed that self-discrepancies are related to negative emotions and that flexible-goal adjustment served as a moderator in this relationship. The view of self in pain and flexible-goal adjustment should be considered as important variables in the process of chronic pain.

  17. Time delay in thin slabs with self-focusing Kerr-type nonlinearity

    Science.gov (United States)

    Isić, G.; Milanović, V.; Radovanović, J.; Ikonić, Z.; Indjin, D.; Harrison, P.

    2008-03-01

    Time delays for an intense transverse electric (TE) wave propagating through a Kerr-type nonlinear slab are investigated. The relation between the bidirectional group delay and the dwell time is derived and it is shown that the difference between them can be separated into three terms. The first one is the familiar self-interference time, due to the dispersion of the medium surrounding the slab. The other two terms are caused by the nonlinearity and oblique incidence of the TE wave. It is shown that the electric field distribution along the slab may be expressed in terms of Jacobi elliptic functions while the phase difference introduced by the slab is given in terms of incomplete elliptic integrals. The expressions for the field-intensity-dependent complex reflection and transmission coefficients are derived and the multivalued oscillatory behavior of the delay times for the case of a thin slab is demonstrated.

  18. Delayed postural control during self-generated perturbations in the frail older adults

    Directory of Open Access Journals (Sweden)

    Kubicki A

    2012-02-01

    Full Text Available Alexandre Kubicki1–3, François Bonnetblanc1,2, Geoffroy Petrement3, Yves Ballay1,2, France Mourey2,4¹UFR STAPS, Université de Bourgogne, Dijon, France; ²Motricité et Plasticité, Institut National de la Santé et de la Recherche Médicale (INSERM, Dijon, France; ³SARL Fovea Interactive, Campus Industriel – Espace Entreprises, Chalon sur Saône, France; 4UFR Médecine, Université de Bourgogne, Dijon, FrancePurpose: The aim of this study was to investigate the coordination between posture and movement in pathological aging (frailty in comparison with normal aging, with the hypothesis that in pathological aging, postural control evolves towards a more reactive mode for which the perturbation induced by the movement is not anticipated and leads to delayed and late postural adjustments.Methods: Elderly subjects performed rapid focal arm-raising movements towards a target, from an upright standing position in two stimuli conditions: simple reaction time and choice reaction time (CRT. Hand and center of pressure (CoP kinematics were compared between a control group and a frail group of the same age.Results: In frail individuals, the entire movement was impaired and slowed down. In addition, postural adjustments that classically precede and accompany the focal arm movement were delayed and reduced, especially in the CRT condition in which the motor prediction is more limited. Finally, a correlation between the time to CoP maximal velocity and the timed up-and-go score was observed.Conclusion: In these patients, it was concluded that the control of the CoP displacement evolved from a proactive mode in which the perturbation associated with the arm movement is anticipated toward a more reactive mode in which the perturbation is compensated by late and delayed adjustments.Keywords: frailty, anticipatory postural adjustments, backward disequilibrium

  19. Waiting for what comes later: capuchin monkeys show self-control even for nonvisible delayed rewards.

    Science.gov (United States)

    Perdue, Bonnie M; Bramlett, Jessica L; Evans, Theodore A; Beran, Michael J

    2015-09-01

    Self-control tasks used with nonhuman animals typically involve the choice between an immediate option and a delayed, but more preferred option. However, in many self-control scenarios, not only does the more impulsive option come sooner in time, it is often more concrete than the delayed option. For example, studies have presented children with the option of eating a visible marshmallow immediately, or foregoing it for a better reward that can only be seen later. Thus, the immediately available option is visible and concrete, whereas the delayed option is not visible and more abstract. We tested eight capuchin monkeys to better understand this potential effect by manipulating the visibility of the response options and the visibility of the baiting itself. Monkeys observed two food items (20 or 5 g pieces of banana) each being placed either on top of or inside of one of the two opaque containers attached to a revolving tray apparatus, either in full view of monkeys or occluded by a barrier. Trials ended when monkeys removed a reward from the rotating tray. To demonstrate self-control, monkeys should have allowed the smaller piece of food to pass if the larger piece was forthcoming. Overall, monkeys were successful on the task, allowing a smaller, visible piece of banana to pass from reach in order to access the larger, nonvisible banana piece. This was true even when the entire baiting process took place out of sight of the monkeys. This finding suggests that capuchin monkeys succeed on self-control tasks even when the delayed option is also more abstract than the immediate one-a situation likely faced by primates in everyday life.

  20. Visual discrimination of delayed self-generated movement reveals the temporal limit of proprioceptive-visual intermodal integration.

    Science.gov (United States)

    Jaime, Mark; O'Driscoll, Kelly; Moore, Chris

    2016-07-01

    This study examined the intermodal integration of visual-proprioceptive feedback via a novel visual discrimination task of delayed self-generated movement. Participants performed a goal-oriented task in which visual feedback was available only via delayed videos displayed on two monitors-each with different delay durations. During task performance, delay duration was varied for one of the videos in the pair relative to a standard delay, which was held constant. Participants were required to identify and use the video with the lesser delay to perform the task. Visual discrimination of the lesser-delayed video was examined under four conditions in which the standard delay was increased for each condition. A temporal limit for proprioceptive-visual intermodal integration of 3-5s was revealed by subjects' inability to reliably discriminate video pairs.

  1. Neuro-mechanical adjustments to shod versus barefoot treadmill runs in the acute and delayed stretch-shortening cycle recovery phases.

    Science.gov (United States)

    Morio, Cedric; Sevrez, Violaine; Chavet, Pascale; Berton, Eric; Nicol, Caroline

    2016-01-01

    In habitually shod recreational runners, we studied the combined influence of footwear and stretch-shortening cycle (SSC) fatigue on treadmill running pattern, paying special attention to neuro-mechanical adjustments in the acute and 2-day delayed recovery periods. The SSC exercise consisted of a series of 25 sub-maximal rebounds on a sledge apparatus repeated until exhaustion. The acute and delayed functional fatigue effects were quantified in a maximal drop jump test. The neuro-mechanical adjustments to fatigue were examined during two submaximal treadmill run tests of 3 min performed either barefoot or with shoes on. Surface electromyographic (EMG) activities, tibial accelerations and kinematics of the right lower limb were recorded during the first and last 15 s of each run. The main result was that neuro-mechanical differences between the shod and barefoot running patterns, classically reported in the absence of fatigue, persisted in the fatigued state. However, in the delayed recovery phase, rearfoot eversion was found to significantly increase in the shod condition. This specific footwear effect is considered as a potential risk factor of overuse injuries in longer runs. Therefore, specific care should be addressed in the delayed recovery phase of SSC fatigue and the use of motion control shoes could be of interest.

  2. Zooming in on children's behavior during delay of gratification: Disentangling impulsigenic and volitional processes underlying self-regulation.

    Science.gov (United States)

    Neuenschwander, Regula; Blair, Clancy

    2017-02-01

    When delaying gratification, both motivational and regulatory processes are likely to be at play; however, the relative contributions of motivational and regulatory influences on delay behavior are unclear. By examining behavioral responses during a delay task, this study sought to examine the motivational (anticipatory behavior) and regulatory mechanisms (executive function and self-control strategies) underlying children's self-regulation. The participants, 65 5- to 9-year-old children (Mage=7.19years, SD=0.89), were video-recorded during a delay procedure and later coded for anticipatory behaviors (e.g., gazing intensely at the tablet) and self-control strategies. Children also completed two executive function (EF) tasks. We found that anticipatory behavior was curvilinearly related to delay time. Children showing either very low or very high levels of anticipatory behavior were not able to wait the entire time. Furthermore, our results indicated that anticipatory behavior interacted with EF to predict delay time. Specifically, anticipatory behavior was negatively related to delay time only if EF abilities were low. Finally, self-control strategies also interacted with EF to predict children's ability to delay. Spontaneous engagement in self-control strategies such as fidgeting and engagement in alternative activities were beneficial for children with low EF but were unrelated to delay time for children with high EF. Results indicate the value of examining motivational and regulatory influences on delay behavior. Lapses in self-regulation may be due to the combination of powerful impulsigenic (i.e., anticipatory behavior) and weak volitional processes (i.e., EF, self-control strategies). Copyright © 2016. Published by Elsevier Inc.

  3. The Effect of Immediate or Delayed Video-Based Teacher Self-Evaluation on Head Start Teachers' Use of Praise

    Science.gov (United States)

    Wright, Margaret R.; Ellis, David N.; Baxter, Abigail

    2012-01-01

    This study investigated a video-based self-evaluation package focused on Head Start teachers' use of praise. Fifty-one Head Start teachers were randomly assigned to one of three groups: immediate self-evaluation, delayed self-evaluation, or a control. The dependent measures were frequency of general and specific praise statements. The independent…

  4. Development of self-adjusting hydraulic machine for combination forming of upsetting and extruding

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    In the paper a self-adjusting hydraulic machine for combination forming of upsetting and extruding is systematacially presented in terms of mechanical principle, design principle, machine construction, design of the key components and working routine. The machine is designed with the following features: The lower movable beam is adjusted by the ejecting cylinder, the upper upsetting beam is reset by the backstroke slide rods, and the upsetting cylinders communicate with the gas-liquid accumulators. These features make the machine conformation compact, save both the backstroke cylinder of the upper upsetting beam and the upsetting cylinder of the lower movable beam, and simplify the hydraulic system. Furthermore, the machine can resolve such problems as incomplete filling at the addendum position, microcracks at the dedendum position, greater force and lower die life during precision forging of spur gears.

  5. A study of school adjustment, self-concept, self-esteem, general wellbeing and parent child relationship in Juvenile Idiopathic Arthritis.

    Science.gov (United States)

    Yadav, Anita; Yadav, T P

    2013-03-01

    To assess school adjustment, self-concept, self-esteem, general wellbeing and parent-child relationship in children with Juvenile Idiopathic Arthritis (JIA)and to study the correlation of these parameters with chronicity of disease, number of active joints, laboratory parameters of disease activity and JIA subtypes. A total of 64 children (32 cases and 32 controls) were recruited for analysis. Self report questionnaires which included PGI General Wellbeing Measure, Adjustment Inventory for School Students, Parent Child Relationship Scale, Self Esteem Inventory and Self Concept Questionnaires were used to assess all the enrolled subjects. Cases had significantly lower general physical well being (p self-esteem, self-concept, adjustment in school, general wellbeing and evokes disturbed parent-child relationship.

  6. Self-adjusting decision feedback equalizer for variational underwater acoustic channel environments

    Institute of Scientific and Technical Information of China (English)

    Yasong Luo; Zhong Liu; Shengliang Hu; Jingbo He

    2014-01-01

    Aimed at the abominable influences to blind equaliza-tion algorithms caused by complex time-space variability existing in underwater acoustic channels, a new self-adjusting decision feedback equalization (DFE) algorithm adapting to different under-water acoustic channel environments is proposed by changing its central tap position. Besides, this new algorithm behaves faster convergence speed based on the analysis of equalizers’ working rules, which is more suitable to implement communications in dif-ferent unknown channels. Corresponding results and conclusions are validated by simulations and spot experiments.

  7. Structural Analysis of Relationship of Internet Addiction with Depression, Social Adjustment and Self-Esteem

    Directory of Open Access Journals (Sweden)

    S. Ghanbari

    2012-10-01

    Full Text Available Introduction & Objective: Internet has become more widespread, removed borders, and provided the people all over the world with great opportunities. Notwithstanding this, the consequences especially in social and cultural context must not be neglected. One of the harmful aspects of internet is internet addiction disorder. The present study aimed to survey and analyzes internet addiction relationship with depression, social adjustment, and self esteem.Materials & Methods: Our research method is descriptive-correlational. By random sampling and offline method, we have selected a sample consisting of 120 persons from Dubai coffee net users with different native languages, 74males and 46 females, aged at least 18 years old and proficient in the English language. Research tools were young internet addiction test (IAT with reliability α=0.88, Beck depression inventory with reliability α=0.84, Sinha social adjustment with reliability α=0.92 and Eysenck self esteem inventory with reliability α= 0.87. The data was analyzed with path analysis method.Results: The results from analysis showed that the data has goodness of fit with the presented model (χ2=3.17; df=3; P=0.36; GFI= 0.99; AGFI= 0.96; CFI= 1.00; NFI= 0.97; RMSEA=0.02. Scales means in internet addiction was 47.69±17.75; depression 21.29 ± 11.12; social adjustment 19.75±7.91 and self esteem was 15.16±4.16. Path coefficient showed that depression (β= 0.57; t=7.61, social adjustment (β= -0.55; t=13.1 and self esteem (β= -0.32; t=14.8 have significantly predicted internet addiction Conclusion: Internet is an important means in the today’s world, but we have to be fully aware of its dangers .In order to avoid the risks of internet use, vast national and international culture-building activities should be done. The results of our research proved the above-mentioned hypothesis.(Sci J Hamadan Univ Med Sci 2012;19(3:41-48

  8. Self-adjusting entropy-stable scheme for compressible Euler equations

    Institute of Scientific and Technical Information of China (English)

    程晓晗; 聂玉峰; 封建湖; LuoXiao-Yu; 蔡力

    2015-01-01

    In this work, a self-adjusting entropy-stable scheme is proposed for solving compressible Euler equations. The entropy-stable scheme is constructed by combining the entropy conservative flux with a suitable diffusion operator. The entropy has to be preserved in smooth solutions and be dissipated at shocks. To achieve this, a switch function, based on entropy variables, is employed to make the numerical diffusion term added around discontinuities automatically. The resulting scheme is still entropy-stable. A number of numerical experiments illustrating the robustness and accuracy of the scheme are presented. From these numerical results, we observe a remarkable gain in accuracy.

  9. Self-adjusting control system of the electrodynamic velocity transducer for Mössbauer spectrometer

    Science.gov (United States)

    Zekhtser, M. Yu.; Revyakin, A. S.; Sarychev, D. A.

    2016-08-01

    The novel control system has been developed on the basis of motion equation for the moving part of the electrodynamic velocity transducer of Mössbauer spectrometer. The motion equation coefficients are the parameters of its vibrating system. The square of cyclic eigenfrequency and damping factor are automatically determined by the control software for the spectrometer using the express analysis of free damped oscillations before any measurements are taken. The control system does not require manual adjustment of the spectrometer before the experiment. It exhibits accuracy of self-tuning and high degree of Doppler modulation stability in long-term experiments, providing high quality Mössbauer spectra.

  10. Social Support, Self-Esteem, and Stress as Predictors of Adjustment to University among First-Year Undergraduates

    Science.gov (United States)

    Friedlander, Laura J.; Reid, Graham J.; Shupak, Naomi; Cribbie, Robert

    2007-01-01

    The current study examined the joint effects of stress, social support, and self-esteem on adjustment to university. First-year undergraduate students (N = 115) were assessed during the first semester and again 10 weeks later, during the second semester of the academic year. Multiple regressions predicting adjustment to university from perceived…

  11. Delayed heart rate recovery after exercise as a risk factor of incident type 2 diabetes mellitus after adjusting for glycometabolic parameters in men.

    Science.gov (United States)

    Yu, Tae Yang; Jee, Jae Hwan; Bae, Ji Cheol; Hong, Won-Jung; Jin, Sang-Man; Kim, Jae Hyeon; Lee, Moon-Kyu

    2016-10-15

    Some studies have reported that delayed heart rate recovery (HRR) after exercise is associated with incident type 2 diabetes mellitus (T2DM). This study aimed to investigate the longitudinal association of delayed HRR following a graded exercise treadmill test (GTX) with the development of T2DM including glucose-associated parameters as an adjusting factor in healthy Korean men. Analyses including fasting plasma glucose, HOMA-IR, HOMA-β, and HbA1c as confounding factors and known confounders were performed. HRR was calculated as peak heart rate minus heart rate after a 1-min rest (HRR 1). Cox proportional hazards model was used to quantify the independent association between HRR and incident T2DM. During 9082 person-years of follow-up between 2006 and 2012, there were 180 (10.1%) incident cases of T2DM. After adjustment for age, BMI, systolic BP, diastolic BP, smoking status, peak heart rate, peak oxygen uptake, TG, LDL-C, HDL-C, fasting plasma glucose, HOMA-IR, HOMA-β, and HbA1c, the hazard ratios (HRs) [95% confidence interval (CI)] of incident T2DM comparing the second and third tertiles to the first tertile of HRR 1 were 0.867 (0.609-1.235) and 0.624 (0.426-0.915), respectively (p for trend=0.017). As a continuous variable, in the fully-adjusted model, the HR (95% CI) of incident T2DM associated with each 1 beat increase in HRR 1 was 0.980 (0.960-1.000) (p=0.048). This study demonstrated that delayed HRR after exercise predicts incident T2DM in men, even after adjusting for fasting glucose, HOMA-IR, HOMA-β, and HbA1c. However, only HRR 1 had clinical significance. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

  12. Supramolecular Self-Assembly Induced Adjustable Multiple Gating States of Nanofluidic Diodes.

    Science.gov (United States)

    Fang, Ruochen; Zhang, Huacheng; Yang, Liulin; Wang, Huanting; Tian, Ye; Zhang, Xi; Jiang, Lei

    2016-12-21

    Artificial nanochannels, inheriting smart gating functions of biological ion channels, promote the development of artificial functional nanofluidic devices for high-performance biosensing and electricity generation. However, gating states of the artificial nanochannels have been mainly realized through chemical modification of the channels with responsive molecules, and their gating states cannot be further regulated once the nanochannel is modified. In this work, we employed a new supramolecular layer-by-layer (LbL) self-assembly method to achieve reversible and adjustable multiple gating features in nanofluidic diodes. Initially, a self-assembly precursor was modified into a single conical nanochannel, then host molecule-cucurbit[8]uril (CB[8]) and guest molecule, a naphthalene derivative, were self-assembled onto the precursor through an LbL method driven by host-enhanced π-π interaction, forming supramolecular monolayer or multilayers on the inner surface of the channel. These self-assemblies with different layer numbers possessed remarkable charge effects and steric effects, exhibiting a capability to regulate the surface charge density and polarity, the effective diameter, and the geometric asymmetry of the single nanochannel, realizing reversible gating of the single nanochannel among multiple rectification and ion-conduction states. As an example of self-assembly of supramolecular networks in nanoconfinements, this work provides a new approach for enhancing functionalities of artificial nanochannels by LbL supramolecular self-assemblies. Meanwhile, since the host molecule, CB[8], used in this work can interact with different kinds of biomolecules and stimuli-responsive chemical species, this work can be further extended to build a novel stable multiple-state research platform for a variety of uses such as sensing and controllable release.

  13. An investigation of the impact of young children's self-knowledge of trustworthiness on school adjustment: a test of the realistic self-knowledge and positive illusion models.

    Science.gov (United States)

    Betts, Lucy R; Rotenberg, Ken J; Trueman, Mark

    2009-06-01

    The study aimed to examine the relationship between self-knowledge of trustworthiness and young children's school adjustment. One hundred and seventy-three (84 male and 89 female) children from school years 1 and 2 in the United Kingdom (mean age 6 years 2 months) were tested twice over 1-year. Children's trustworthiness was assessed using: (a) self-report at Time 1 and Time 2; (b) peers reports at Time 1 and Time 2; and (c) teacher-reports at Time 2. School adjustment was assessed by child-rated school-liking and the Short-Form Teacher Rating Scale of School Adjustment (Short-Form TRSSA). Longitudinal quadratic relationships were found between school adjustment and children's self-knowledge, using peer-reported trustworthiness as a reference: more accurate self-knowledge of trustworthiness predicted increases in school adjustment. Comparable concurrent quadratic relationships were found between teacher-rated school adjustment and children's self-knowledge, using teacher-reported trustworthiness as a reference, at Time 2. The findings support the conclusion that young children's psychosocial adjustment is best accounted for by the realistic self-knowledge model (Colvin & Block, 1994).

  14. A low-power current self-adjusted VCO using a bottom PMOS current source

    Science.gov (United States)

    Zhixiong, Sheng; Fengqi, Yu

    2014-09-01

    This paper presents the design and implementation of a current self-adjusted VCO with low power consumption. In the proposed VCO, a bottom PMOS current source instead of a top one is adopted to decrease the tail noise. A current self-adjusted technique without additional external control signals is taken to ensure the VCO starts up in the whole band while keeping the power consumption relatively low. Meanwhile, the phase noise of the VCO at the low frequency (high Cvar) can be reduced by the technique. The circuit is implemented in 0.18 μm CMOS technology. The proposed VCO exhibits low power consumption of < 1.6 mW at a 1.5 V supply voltage and a tuning range from 11.79 to 12.53 GHz. The measured phase noise at 1 MHz offset from the frequency 11.79 GHz is -104.7 dBc/Hz, and the corresponding FOM is -184.2 dBc/Hz.

  15. A preliminary result of self-calibration bundle adjustment of Chang'E-2 stereo imagery

    Science.gov (United States)

    Liu, Yiliang; Liu, Bin; Peng, Man; Di, Kaichang

    2014-05-01

    The high resolution lunar global images acquired by Chang'E-2 (CE-2) CCD camera orbiter are of great importance for lunar science research as well as preparation of the landing and surface operation of Chang'E-3 (CE-3) lunar rover. In this paper, a rigorous geometric model of CE-2 CCD camera is developed based on the push-broom imaging principle. A self-calibration bundle adjustment (SCBA) method is proposed to eliminate the inconsistencies between forward- and backward-looking images, which are caused by the inaccuracy of exterior orientation (EO) parameters and the uncertain relationship between the two CCD line arrays of the camera. The interior orientation (IO) model is refined by adding several additional parameters and the EO parameters are fitted by a third-order polynomial model. Strategies for ensuring the robustness and reliability of the solution are also adopted, including EO pseudo observations selection, reasonable weight determination, and truncated singular value decomposition method. After adjustment, the inconsistencies between the forward- and backward-looking images are eliminated effectively by reducing the image-space residuals from around 20 pixels to sub-pixel. Based on the adjustment, high precision DEM (Digital Elevation Model) and DOM (Digital Ortho Map) of a local area at Sinus Iridum (pre-selected CE-3 landing site) are generated automatically.

  16. 数字光纤直放站中的时延测量与校正%The Measurement and Adjustment of Time Delay in Digital Optical Fiber Repeater

    Institute of Scientific and Technical Information of China (English)

    金绍春

    2011-01-01

    提出了应用于数字光纤直放站的时延测量与校正方法。阐述了数字光纤直放站的结构、时延测量的目的与原理、时延校正的计算。时延测量以CPRI协议为基础,包括光纤时延测量、转发时延测量。时延校正分下行时延校正和上行时延校正。下行时延校正是使同一台REC送出的IQ信号在不同的RE中能够同时射频发送出去。上行时延校正是使不同的RE接收到的IQ信号能够正确进行功率合成。%The Method of measurement and adjustment of time delay which applies to digital optical fiber repeater has been presented. The structure of digital optical fiber repeater, the purpose and principle of time delay measurement, the calculation of time delay adjustment, has been represented. The measurement of time delay that based on CPRI protocol includes the measurement of optical fiber time delay and the measurement of forward time delay. The time delay adjustment includes uplink time delay adjustment and downlink time delay adjustment. The purpose of downlink time delay adjustment is to ensure IQ signals in different REs which comes from the same REC transmit synchronously by radio frequency signals. The purpose of uplink time delay adjustment is to ensure received IQ signals by different REs synthesize correctly by power.

  17. Causal relationships among academic delay of gratification, motivation, and self-regulated learning in elementary school children.

    Science.gov (United States)

    Zhang, Lili; Maruno, Shun'ichi

    2010-10-01

    Academic delay of gratification refers to the postponement of immediate rewards by students and the pursuit of more important, temporally remote academic goals. A path model was designed to identify the causal relationships among academic delay of gratification and motivation, self-regulated learning strategies (as specified in the Motivated Strategies for Learning Questionnaire), and grades among 386 Chinese elementary school children. Academic delay of gratification was found to be positively related to motivation and metacognition. Cognitive strategy, resource management, and grades mediated these two factors and were indirectly related to academic delay of gratification.

  18. Adolescents' performance on delay and probability discounting tasks: contributions of age, intelligence, executive functioning, and self-reported externalizing behavior.

    Science.gov (United States)

    Olson, Elizabeth A; Hooper, Catalina J; Collins, Paul; Luciana, Monica

    2007-11-01

    Healthy adolescents, ages 9-23, completed delay and probability discounting tasks and measures of verbal and nonverbal intelligence, executive functioning, and self-reported internalizing and externalizing behavior. Delay but not probability discounting decreased with age. Delay discounting was also associated with verbal intelligence and Go-NoGo and Iowa Gambling Task performance. Probability discounting was associated only with externalizing behavior. Findings conform to an accumulation of evidence that while delay and probability discounting may have some overlapping components, they also reflect some fundamentally different processes in this age group.

  19. Monte Carlo Analysis of Airport Throughput and Traffic Delays Using Self Separation Procedures

    Science.gov (United States)

    Consiglio, Maria C.; Sturdy, James L.

    2006-01-01

    This paper presents the results of three simulation studies of throughput and delay times of arrival and departure operations performed at non-towered, non-radar airports using self-separation procedures. The studies were conducted as part of the validation process of the Small Aircraft Transportation Systems Higher Volume Operations (SATS HVO) concept and include an analysis of the predicted airport capacity using with different traffic conditions and system constraints under increasing levels of demand. Results show that SATS HVO procedures can dramatically increase capacity at non-towered, non-radar airports and that the concept offers the potential for increasing capacity of the overall air transportation system.

  20. The effects of hysterectomy on body image, self-esteem, and marital adjustment in Turkish women with gynecologic cancer.

    Science.gov (United States)

    Pinar, Gul; Okdem, Seyda; Dogan, Nevin; Buyukgonenc, Lale; Ayhan, Ali

    2012-06-01

    The purpose of this research was to investigate the differences in the effect of hysterectomy on body image, self-esteem, and marital adjustment in Turkish women with gynecologic cancer based on specific independent variables, including age, education, employment, having or not having children, and income. This cross-sectional study compared a group of women who underwent a hysterectomy (n = 100) with a healthy control group (n = 100). The study findings indicate that women who had a hysterectomy were found in worse conditions in terms of body image, self-esteem, and dyadic adjustment compared to healthy women. In terms of dyadic adjustment and body image among women who had undergone a hysterectomy, those with lower levels of income and education were found in poorer conditions. The study's findings show that hysterectomies have negative effects on body image, self-esteem, and dyadic adjustment in women affected by gynecologic cancer. Nursing assessment of self-esteem and marital adjustment indicators and implementation of strategies to increase self-confidence and self-esteem are needed for high-risk women.

  1. College Adjustment as a Mediator Between Attention Deficit/Hyperactivity Disorder Symptoms and Work Self-Efficacy

    Directory of Open Access Journals (Sweden)

    Clarissa Tochetto de Oliveira

    Full Text Available Abstract Studies have addressed features of Attention Deficit/Hyperactivity Disorder (ADHD in higher education, but the potential relationships between ADHD symptoms, dimensions of college adjustment and students' work self-efficacy remain scarcely explored. The aim of this study was to test a theoretical model in which the dimensions of college adjustment mediate the relationship between ADHD symptoms and work self-efficacy. Participants were 509 college students from two Brazilian public universities. Data were collected using questionnaires and analyzed using a path analysis model. The ADHD symptoms affected work self-efficacy exclusively through college adjustment problems. Improving students' well-being, social support networks, study habits, and feelings regarding their majors and the university may reduce the potential disadvantages in work self-efficacy caused by ADHD symptoms.

  2. Dynamics of ethanol and water mixtures observed in a self-adjusting molecularly thin slit pore.

    Science.gov (United States)

    Severin, N; Sokolov, I M; Rabe, J P

    2014-04-01

    The structure of multicomponent fluids in confined geometries is a key to understanding their properties. However, it remains an experimental challenge to gain molecular-scale resolution information on this structure. Here we show that mono- and multilayers of graphene, conforming to heterogeneous monolayers of molecules in a flexible slit pore between a mica surface and the graphene layers, allow for mapping the phase separation of water and ethanol within such a slit pore. Employing scanning force microscopy, we readily distinguish clusters of ethanol and water molecules due their different sizes, and we show that the phase separated water-ethanol structures become coarser under thicker graphenes. Moreover, we obtain a lower bound for the two-dimensional diffusion coefficient of ethanol in water of D ≥ 2 × 10(-14) m(2) s(-1). Thus, the molecularly thin slit pore provides a powerful tool to control and to investigate mixed fluids in self-adjusting nanopores.

  3. Optimization of Energy Performance of Windows by Applying Self-Adjustable Shadings

    Directory of Open Access Journals (Sweden)

    Starkov Vadim

    2016-01-01

    Full Text Available The paper studied the thermo-physical properties of the windows with self-adjustable jalousie and consequent cooling load reduction for the buildings in 60-degree North latitude throughout the year. We focused on using different types of innovative materials and window structures and specified possible ways of improvement for modern and conservative windows. The paper discussed main factors that induce choosing specific window type. First, we investigated quantity of solar radiation energy that is taken into account while calculating the cooling load. Then this dependence was analyzed with different scenarios for specific window structures facing to corresponding cardinal direction. The results provide useful information for optimizing the thermal response of an enclosure to periodic solar heat gains.

  4. A Dynamic Self-Adjusted Buffering Mechanism for Peer-to-Peer Real-Time Streaming

    Directory of Open Access Journals (Sweden)

    Jun-Li Kuo

    2011-05-01

    Full Text Available Multimedia live stream multicasting and on-line real-time applications are popular recently. Real-time multicast system can use peer-to-peer technology to keep stability and scalability without any additional support from the underneath network or a server. Our proposed scheme focuses on the mesh architecture of peer-to-peer live streaming system and experiments with the buffering mechanisms. We design the dynamic buffer to substitute the traditional fixed buffer.According to the existing measurements and our simulation results, using the traditional static buffer in a dynamic peer-to-peer environment has a limit of improving quality of service. In our proposed method, the buffering mechanism can adjust buffer to avoid the frozen or reboot of streaming based on the input data rate. A self-adjusted buffer control can be suitable for the violently dynamic peer-to-peer environment. Without any support of infrastructure and modification of peer-to-peer protocols, our proposed scheme can be workable in any chunk-based peer-to-peer streaming delivery. Hence, our proposed dynamic buffering mechanism varies the existing peer-to-peer live streaming system less to improve quality of experience more.

  5. Non-practice of breast self examination and marital status are associated with delayed presentation with breast cancer.

    Science.gov (United States)

    Ghazali, Sumarni Mohd; Othman, Zabedah; Cheong, Kee Chee; Hock, Lim Kuang; Wan Mahiyuddin, Wan Rozita; Kamaluddin, Muhammad Amir; Yusoff, Ahmad Faudzi; Mustafa, Amal Nasir

    2013-01-01

    Delay in seeking treatment for breast cancer is a barrier to the early diagnosis and management of the disease, resulting in a poorer prognosis. We here estimated the prevalence of delayed presentation for breast cancer and identified possible influential sociodemographic factors in a cross-sectional study of 250 patients diagnosed with primary breast cancer at the Radiotherapy and Oncology Clinic in Kuala Lumpur Hospital. Data were collected by face-to-face interview using a structured questionnaire and from medical records. We examined associations between delayed presentation (presenting to a physician more than 3 months after self-discovery of a symptom) and sociodemographic characteristics, practice of breast self examination (BSE), history of benign breast disease, family history of breast cancer and type of symptom, symptom disclosure and advice from others to seek treatment using multiple logistic regression. Time from self-discovery of symptom to presentation ranged from tghe same day to 5 years. Prevalence of delayed presentation was 33.1% (95%CI: 27.4, 39.3). A significantly higher proportion of delayers presented with late stages (stage III/IV) (58.3% vs. 26.9%, p<0.001). Divorced or widowed women (OR: 2.23, 95% CI: 1.11, 4.47) had a higher risk of delayed presentation than married women and women who never performed breast self examination were more likely to delay presentation compared to those who regularly performed BSE (OR: 2.74, 95% CI: 1.33, 5.64). Our findings indicate that delayed presentation for breast cancer symptoms among Malaysian women is high and that marital status and breast self examination play major roles in treatment-seeking for breast cancer symptoms.

  6. Self-refraction accuracy with adjustable spectacles among children in Ghana.

    Science.gov (United States)

    Ilechie, Alex Azuka; Abokyi, Samuel; Owusu-Ansah, Andrew; Boadi-Kusi, Samuel Bert; Denkyira, Andrew Kofi; Abraham, Carl Halladay

    2015-04-01

    To determine the accuracy of self-refraction (SR) in myopic teenagers, we compared visual and refractive outcomes of self-refracting spectacles (FocusSpecs) with those obtained using cycloplegic subjective refraction (CSR) as a gold standard. A total of 203 eligible schoolchildren (mean [±SD] age, 13.8 [±1.0] years; 59.1% were female) completed an examination consisting of SR with FocusSpecs adjustable spectacles, visual acuity with the logMAR (logarithm of the minimum angle of resolution) chart, cycloplegic retinoscopy, and CSR. Examiners were masked to the SR findings. Wilcoxon signed rank test and paired Student t test were used to compare measures across refraction methods (95% confidence intervals [CIs]). The mean (±SD) spherical equivalent refractive error measured by CSR and SR was -1.22 (±0.49) diopters (D) and -1.66 (±0.73) D, respectively, a statistically significant difference of -0.44 D (p refraction offers acceptable visual and refractive results for young people in a rural setting in Ghana, although myopic inaccuracy in the more negative direction occurred in some children.

  7. Asymptotically adjusted self-consistent multiplicative parameter exchange-energy-functional method: Application to diatomic molecules

    Science.gov (United States)

    Karasiev, Valentin V.; Ludeña, Eduardo V.

    2002-03-01

    An asymptotically adjusted self-consistent α (AASCα) method is advanced for the purpose of constructing an accurate orbital-dependent local exchange potential with correct asymptotic behavior. This local potential is made up of the Slater potential plus an additional term containing a multiplicative parameter αx (a self-consistently determined orbital functional) times a local response potential that is approximated using standard exchange-energy functionals. Applications of the AASCα functionals to diatomic molecules yield significantly improved total, exchange, and atomization energies that compare quite well, but at a much lower computational cost, with those obtained by the exact orbital-dependent exchange energy treatment [S. Ivanov, S. Hirata, and R. J. Bartlett, Phys. Rev. Lett. 83, 5455 (1999); A. Görling, Phys. Rev. Lett. 83, 5459 (1999)] (in fact, the present results are very close to the Hartree-Fock ones). Moreover, because in the AASCα method the exchange potential tends toward the correct (-1/r) asymptotic behavior, the ionization potentials approximated by the negative of the highest-occupied-orbital energy have a closer agreement with experimental values than those resulting from current approximate density functionals. Finally, we show that in the context of the present method it is possible to introduce some generalizations to the Gritsenko-van Leeuwen-van Lenthe-Baerends model [O. Gritsenko, R. van Leeuwen, E. van Lenthe, and E. J. Baerends, Phys. Rev. A 51, 1944 (1995)].

  8. Cognitive person variables in the delay of gratification of older children at risk.

    Science.gov (United States)

    Rodriguez, M L; Mischel, W; Shoda, Y

    1989-08-01

    The components of self-regulation were analyzed, extending the self-imposed delay of gratification paradigm to older children with social adjustment problems. Delay behavior was related to a network of conceptually relevant cognitive person variables, consisting of attention deployment strategies during delay, knowledge of delay rules, and intelligence. A positive relationship was demonstrated between concurrent indexes of intelligence, attention deployment, and actual delay time. Moreover, attention deployment, measured as an individual differences variable during the delay process, had a direct, positive effect on delay behavior. Specifically, as the duration of delay and the frustration of the situation increased, children who spent a higher proportion of the time distracting themselves from the tempting elements of the delay situation were able to delay longer. The effect of attention deployment on delay behavior was significant even when age, intelligence, and delay rule knowledge were controlled. Likewise, delay rule knowledge significantly predicted delay time, even when age, attention deployment, and intelligence were controlled.

  9. Aqueous self-assembly of hydrophobic macromolecules with adjustable rigidity of the backbone.

    Science.gov (United States)

    Guan, Zhou; Liu, Dapeng; Lin, Jiaping; Wang, Xiaosong

    2017-08-02

    P(FpC3P) (Fp: CpFe(CO)2; C3P: propyl diphenyl phosphine) has a helical backbone, resulting from piano stool metal coordination geometry, which is rigid with intramolecular aromatic interaction of the phenyl groups. The macromolecule is hydrophobic, but the polarized CO groups can interact with water for aqueous self-assembly. The stiffness of P(FpC3P), which is adjustable by temperature, is an important factor influencing the morphologies of kinetically trapped assemblies. P(FpC3P)7 self-assembles in DMSO/water (10/90 by volume) into lamellae at 25 °C, vesicles at 40 °C and irregular aggregates at higher temperatures (60 and 70 °C). The colloidal stability decreases in the order of lamellae, vesicles and irregular aggregates. Dissipative particle dynamics (DPD) simulation reveals the same temperature-dependent self-assembled morphologies with an interior of hydrophobic aromatic groups covered with the metal coordination units. The rigid backbone at 25 °C accounts for the formation of the layered morphology, while the reduced rigidity of the same P(FpC3P)7 at 40 °C curves up the lamellae into vesicles. At a higher temperature (60 or 70 °C), P(FpC3P)7 behaves as a random coil without obvious amphiphilic segregation, resulting in irregular aggregates. The stiffness is, therefore, a crucial factor for the aqueous assembly of macromolecules without obvious amphiphilic segregation, which is reminiscent of the solution behavior observed for many hydrophobic biological macromolecules such as proteins.

  10. Adjusting Sink Location to Reduce End-to-End Delay in Low-Duty-Cycle Wireless Sensor Networks

    Institute of Scientific and Technical Information of China (English)

    Yu-Yuan Lin; Kuo-Feng Ssu; Hau-Yu Chiang

    2015-01-01

    Abstract⎯Low-duty-cycle mechanisms can reduce the energy consumptionsignificantly in wireless sensor networks (WSNs). Sensors stay dormant most of the time to save their energy and wake up based on their needs. However, such a technique, while prolonging the network lifetime, sets excessive challenges for reducing the end-to-end (E2E) delay within the network. In this paper, the centralized cluster-based location finding (CCLF) algorithm is proposed to reduce the high latency in low-duty-cycle WSNs by finding a suitable position for the sink. The algorithm is mainly composed of three steps: a) the cluster construction, b) the fast look-up table (FLU-table) construction, and c) the sink location decision. The simulation results show that the performance of the CCLF algorithm is significantly similar to that of the optimal algorithm. Moreover, the CCLF algorithm requires less operation time compared with the optimal algorithm.

  11. Self-Administered Cocaine Causes Long-Lasting Increases in Impulsive Choice in a Delay Discounting Task

    OpenAIRE

    Mendez, Ian A.; Nicholas W Simon; Hart, Nigel; Mitchell, Marci R.; Nation, Jack R.; Wellman, Paul J.; Setlow, Barry

    2010-01-01

    Cocaine use is associated with high levels of impulsive choice (preference for immediate over delayed rewards), but it is not clear whether cocaine use causes elevated impulsive choice, or whether elevated impulsive choice is solely a predisposing factor for cocaine use. This study examined the effects of prior cocaine self-administration on rats performing a delay discounting task commonly used to measure impulsive choice. Male Long-Evans rats were implanted with intravenous catheters, and f...

  12. Self-Organization of Microscale Condensate for Delayed Flooding of Nanostructured Superhydrophobic Surfaces.

    Science.gov (United States)

    Ölçeroğlu, Emre; McCarthy, Matthew

    2016-03-02

    Superhydrophobic surfaces enhance condensation by inhibiting the formation of an insulating liquid layer. While this produces efficient heat transfer at low supersaturations, superhydrophobicity has been shown to break down at increased supersaturations. As heat transfer increases, the random distribution and high density of nucleation sites produces pinned droplets, which lead to uncontrollable flooding. In this work, engineered variations in wettability are used to promote the self-organization of microscale droplets, which is shown to effectively delay flooding. Virus-templated superhydrophobic surfaces are patterned with an array of superhydrophilic islands designed to minimize surface adhesion while promoting spatial order. By use of optical and electron microscopy, the surfaces are optimized and characterized during condensation. Mixed wettability imparts spatial order not only through preferential nucleation but more importantly through the self-organization of coalescing droplets at high supersaturations. The self-organization of microscale droplets (diameters of 1 mm) on the surface. As heat transfer increases, the surfaces transition from jumping-mode to shedding-mode removal with no flooding. This demonstrates the ability to engineer surfaces to resist flooding and can act as the basis for developing robust superhydrophobic surfaces for condensation applications.

  13. Delay Discounting Mediates Parent-Adolescent Relationship Quality and Risky Sexual Behavior for Low Self-Control Adolescents

    Science.gov (United States)

    Kahn, Rachel E.; Holmes, Christopher; Farley, Julee P.; Kim-Spoon, Jungmeen

    2015-01-01

    Parent-adolescent relationship quality and delay discounting may play important roles in adolescents’ sexual decision making processes, and levels of self-control during adolescence could act as a buffer within these factors. This longitudinal study included 219 adolescent (55% male; mean age = 12.66 years at Wave 1; mean age = 15.10 years at Wave 2) and primary caregiver dyads. Structural equation modeling was utilized to determine whether delay discounting mediated the association between parent-adolescent relationship quality and adolescents’ risky sexual behavior and how this mediated association may differ between those with high versus low self-control. The results revealed parent-adolescent relationship quality plays a role in the development of risky sexual behavior indirectly through levels of delay discounting, but only for adolescents with low self-control. These findings could inform sex education policies and health prevention programs that address adolescent risky sexual behavior. PMID:26202153

  14. Development of a Risk-adjustment Model for the Inpatient Rehabilitation Facility Discharge Self-care Functional Status Quality Measure.

    Science.gov (United States)

    Deutsch, Anne; Pardasaney, Poonam; Iriondo-Perez, Jeniffer; Ingber, Melvin J; Porter, Kristie A; McMullen, Tara

    2017-07-01

    Functional status measures are important patient-centered indicators of inpatient rehabilitation facility (IRF) quality of care. We developed a risk-adjusted self-care functional status measure for the IRF Quality Reporting Program. This paper describes the development and performance of the measure's risk-adjustment model. Our sample included IRF Medicare fee-for-service patients from the Centers for Medicare & Medicaid Services' 2008-2010 Post-Acute Care Payment Reform Demonstration. Data sources included the Continuity Assessment Record and Evaluation Item Set, IRF-Patient Assessment Instrument, and Medicare claims. Self-care scores were based on 7 Continuity Assessment Record and Evaluation items. The model was developed using discharge self-care score as the dependent variable, and generalized linear modeling with generalized estimation equation to account for patient characteristics and clustering within IRFs. Patient demographics, clinical characteristics at IRF admission, and clinical characteristics related to the recent hospitalization were tested as risk adjusters. A total of 4769 patient stays from 38 IRFs were included. Approximately 57% of the sample was female; 38.4%, 75-84 years; and 31.0%, 65-74 years. The final model, containing 77 risk adjusters, explained 53.7% of variance in discharge self-care scores (P<0.0001). Admission self-care function was the strongest predictor, followed by admission cognitive function and IRF primary diagnosis group. The range of expected and observed scores overlapped very well, with little bias across the range of predicted self-care functioning. Our risk-adjustment model demonstrated strong validity for predicting discharge self-care scores. Although the model needs validation with national data, it represents an important first step in evaluation of IRF functional outcomes.

  15. A consensus dynamics with delay-induced instability can self-regulate for stability via agent regrouping.

    Science.gov (United States)

    Hyong Koh, M; Sipahi, Rifat

    2016-11-01

    Dynamics of many multi-agent systems is influenced by communication/activation delays τ. In the presence of delays, there exists a certain margin called the delay margin τ(*), less than which system stability holds. This margin depends strongly on agents' dynamics and the agent network. In this article, three key elements, namely, the delay margin, network graph, and a distance threshold conditioning two agents' connectivity are considered in a multi-agent consensus dynamics under delay τ. We report that when the dynamics is unstable under this delay, its states can be naturally bounded, even for arbitrarily large threshold values, preventing agents to disperse indefinitely. This mechanism can also make the system recover stability in a self-regulating manner, mainly induced by network separation and enhanced delay margin. Under certain conditions, unstable consensus dynamics can keep separating into smaller stable subnetwork dynamics until all agents stabilize in their respective subnetworks. Results are then demonstrated on a previously validated robot coordination model, where specifically robustness of τ(*) is studied against the delay τinh inherently present in the orientation measurements of the robots. To this end, a mathematical framework to compute τ(*) with respect to τinh in quasi-state is developed, demonstrating that τ(*) can be sensitive to τinh, yet robot regrouping and stabilization of subnetworks is still possible.

  16. The self-adjusting file (SAF) system: An evidence-based update.

    Science.gov (United States)

    Metzger, Zvi

    2014-09-01

    Current rotary file systems are effective tools. Nevertheless, they have two main shortcomings: They are unable to effectively clean and shape oval canals and depend too much on the irrigant to do the cleaning, which is an unrealistic illusionThey may jeopardize the long-term survival of the tooth via unnecessary, excessive removal of sound dentin and creation of micro-cracks in the remaining root dentin. The new Self-adjusting File (SAF) technology uses a hollow, compressible NiTi file, with no central metal core, through which a continuous flow of irrigant is provided throughout the procedure. The SAF technology allows for effective cleaning of all root canals including oval canals, thus allowing for the effective disinfection and obturation of all canal morphologies. This technology uses a new concept of cleaning and shaping in which a uniform layer of dentin is removed from around the entire perimeter of the root canal, thus avoiding unnecessary excessive removal of sound dentin. Furthermore, the mode of action used by this file system does not apply the machining of all root canals to a circular bore, as do all other rotary file systems, and does not cause micro-cracks in the remaining root dentin. The new SAF technology allows for a new concept in cleaning and shaping root canals: Minimally Invasive 3D Endodontics.

  17. Micro-dynamic Behavior and Self-adjusting Water Transmit Mechanism of Water-transferring Composite

    Institute of Scientific and Technical Information of China (English)

    ZHANG Zengzhi; XU Hongmei; MA Dandan; ZHAO Jin

    2011-01-01

    Constructional and micro-dynamic process of the water-transferring composite was analyzed.This composite can transmit water to soil with a self-adjustable speed to ensure the survival of seedlings in arid and semi-arid regions when it is embedded in soil around the roots of the seedlings.It is obtained from natural plant fiber coated with a colloid made by mixing a certain proportion of polyacrylamide and montmorillonite.The rules of water being transmitted to soil by the coating under different condition were tested by M-30 quick moisture measure instrument.The process of water-desorption of the coating material was investigated by a Perkin Elmer Diamond S Ⅱ thermal multi-analyzer.Moreover,the micro-dynamic behavior was detected by a FEIQuanta 2000 environment scanning electron microscope.The results demonstrate that montmorillonite has lower water-desorption energy barrier than polyacrylamide and can lose water more easily.montmorillonite particles bridge up to be the main water-transmit material at low water potential (when the soil relatively dry or when the temperature is high),and they break bridge at high water potential while the polyacrylamide acts as the main water-transmit material.

  18. An evaluation of nonresponse bias in peer, self, and teacher ratings of children's psychosocial adjustment.

    Science.gov (United States)

    Gerrits, M H; van den Oord, E J; Voogt, R

    2001-07-01

    The last decades have shown a rapid increase in nonresponse rates. For this reason it is important to study nonresponse and think about it critically. In this article we investigated whether nonresponse affected estimates of the levels of adjustment problems in children and the correlations between these outcomes. The nonresponse was caused by parents who refused permission to interview their children at school, parents who did not return a questionnaire, teachers who did not complete the questionnaire, and parents who refused to participate in an in-depth study, with nonresponse rates of 9%, 69%, 25%, and 46% respectively. The sample consisted of 1282 children aged 4 5 years and the dependent measures were peer-rated sociometric status, self-rated wellbeing at school, and teacher-rated behaviour problems. Despite considerable nonresponse in some conditions our results showed hardly any evidence for bias. This suggested that bias cannot simply be inferred from the amount of nonresponse and that standard rules such as "nonresponse rates higher than 50% are not acceptable" lack a scientific basis. Instead, we argue that to assess nonresponse bias the specific conditions and analyses of the study will need to be considered and special measures may be required.

  19. Punishment Mechanism with Self-Adjusting Rules in Spatial Voluntary Public Goods Games

    Science.gov (United States)

    Wu, Zhong-Wei; Xu, Zhao-Jin; Zhang, Lian-Zhong

    2014-11-01

    The phenomena of cooperation in animal and human society are ubiquitous, but the selfish outcome that no player contributes to the public good will lead to the “tragedy of the commons”. The recent research shows that high punishment can improve the cooperation of the population. In this paper, we introduce a punishment mechanism into spatial voluntary public goods games with every individual only knowing his own payoff in each round. Using the self-adjusting rules, we find that the different cost for punishment can lead to different effects on the voluntary public goods games. Especially, when the cost for punishment is decreased, a higher contribution region will appear in the case of low r value. It means even for the low r value, individuals can form the contributing groups in large quantities to produce a more efficient outcome than that in moderate r value. In addition, we also find the players' memory can have effects on the average outcome of the population.

  20. Design and kinetic analysis of piezoelectric energy harvesters with self-adjusting resonant frequency

    Science.gov (United States)

    Yu-Jen, Wang; Tsung-Yi, Chuang; Jui-Hsin, Yu

    2017-09-01

    Vibration-based energy harvesters have been developed as power sources for wireless sensor networks. Because the vibration frequency of the environment is varied with surrounding conditions, how to design an adaptive energy harvester is a practical topic. This paper proposes a design for a piezoelectric energy harvester possessing the ability to self-adjust its resonant frequency in rotational environments. The effective length of a trapezoidal cantilever is extended by centrifugal force from a rotating wheel to vary its area moment of inertia. The analytical solution for the natural frequency of the piezoelectric energy harvester was derived from the parameter design process, which could specify a structure approaching resonance at any wheel rotating frequency. The kinetic equation and electrical damping induced by power generation were derived from a Lagrange method and a mechanical-electrical coupling model, respectively. An energy harvester with adequate parameters can generate power at a wide range of car speeds. The output power of an experimental prototype composed of piezoelectric thin films and connected to a 3.3 MΩ external resistor was approximately 70-140 μW at wheel speeds ranging from 200 to 700 RPM. These results demonstrate that the proposed piezoelectric energy harvester can be applied as a power source for the wireless tire pressure monitoring sensor.

  1. Design of MOEMS adjustable optical delay line to reduce link set-up time in a tera-bit/s optical interconnection network.

    Science.gov (United States)

    Jing, Wencai; Zhang, Yimo; Zhou, Ge

    2002-07-15

    A new structure for bit synchronization in a tera-bit/s optical interconnection network has been designed using micro-electro-mechanical system (MEMS) technique. Link multiplexing has been adopted to reduce data packet communication latency. To eliminate link set-up time, adjustable optical delay lines (AODLs) have been adopted to shift the phases of the distributed optical clock signals for bit synchronization. By changing the optical path distance of the optical clock signal, the phase of the clock signal can be shifted at a very high resolution. A phase-shift resolution of 0.1 ps can be easily achieved with 30-microm alternation of the optical path length in vacuum.

  2. Adjustment of Siblings of Children with Mental Health Problems: Behaviour, Self-Concept, Quality of Life and Family Functioning

    Science.gov (United States)

    Barnett, R. A.; Hunter, M.

    2012-01-01

    This study examined the adjustment of siblings of children with mental health problems. The participants had brothers or sisters receiving treatment at a Child and Adolescent Mental Health Service within the Hunter New England Health Service, New South Wales, Australia. Seventy-five siblings completed questionnaires on their self-concept, quality…

  3. Bias in Self-Perceptions and Internalizing and Externalizing Problems in Adjustment During Early Adolescence: A Prospective Investigation

    Science.gov (United States)

    DuBois, David L.; Silverthorn, Naida

    2004-01-01

    We investigated bias in self-perceptions of competence (relative to parent ratings) for family, school, and peer domains as predictors of adjustment problems among 139 young adolescents over a 1-year period using a prospective design. Regressions examined measures of bias at Time 1 (T1) as predictors of ratings of internalizing and externalizing…

  4. Adjustment of Siblings of Children with Mental Health Problems: Behaviour, Self-Concept, Quality of Life and Family Functioning

    Science.gov (United States)

    Barnett, R. A.; Hunter, M.

    2012-01-01

    This study examined the adjustment of siblings of children with mental health problems. The participants had brothers or sisters receiving treatment at a Child and Adolescent Mental Health Service within the Hunter New England Health Service, New South Wales, Australia. Seventy-five siblings completed questionnaires on their self-concept, quality…

  5. Delayed Puberty

    DEFF Research Database (Denmark)

    Kolby, Nanna; Busch, Alexander Siegfried; Juul, Anders

    2017-01-01

    Delayed puberty can be a source of great concern and anxiety, although it usually is caused by a self-limiting variant of the normal physiological timing named constitutional delay of growth and puberty (CDGP). Delayed puberty can, however, also be the first presentation of a permanent condition ...... mineral density) and psychological (e.g., low self-esteem) and underline the importance of careful clinical assessment of the patients.......Delayed puberty can be a source of great concern and anxiety, although it usually is caused by a self-limiting variant of the normal physiological timing named constitutional delay of growth and puberty (CDGP). Delayed puberty can, however, also be the first presentation of a permanent condition...

  6. Self-Injection-Locked Magnetron as an Active Ring Resonator Side Coupled to a Waveguide With a Delayed Feedback Loop

    Science.gov (United States)

    Bliokh, Y. P.; Krasik, Y. E.; Felsteiner, J.

    2012-01-01

    The theoretical analysis and numerical simulations of the magnetron operation with a feedback loop were performed assuming that the delay of the electromagnetic wave propagating in the loop is constant whereas the phase of the complex feedback reflection coefficient is varied. Results of simulations showed that by a proper adjustment of values of the time delay and phase of reflection coefficient that determines phase matching between the waves in the resonator and feedback loop, one can increase the magnetron's output power significantly without any other additional measures.

  7. Self-injection-locked magnetron as an active ring resonator side coupled to a waveguide with a delayed feedback loop

    CERN Document Server

    Bliokh, Y P; Felsteiner, J

    2011-01-01

    The theoretical analysis and numerical simulations of the magnetron operation with a feedback loop were performed assuming that the delay of the electromagnetic wave propagating in the loop is constant whereas the phase of the complex feedback reflection coefficient is varied. Results of simulations showed that by a proper adjustment of values of the time delay and phase of reflection coefficient that determines phase matching between the waves in the resonator and feedback loop, one can increase the magnetron's output power significantly without any other additional measures.

  8. Peer and self-reports of victimization and bullying: their differential association with internalizing problems and social adjustment.

    Science.gov (United States)

    Bouman, Thijs; van der Meulen, Matty; Goossens, Frits A; Olthof, Tjeert; Vermande, Marjolijn M; Aleva, Elisabeth A

    2012-12-01

    Researchers typically employ either peer or self-reports to assess involvement in bullying. In this study, we examined the merits of each method for the identification of child characteristics related to victimization and bullying others. Accordingly, we investigated the difference between these two methods with regard to their relationship with social adjustment (i.e., perceived popularity, likeability, and self-perceived social acceptance) and internalizing problems (i.e., anxiety, depression, and self-worth) in 1192 Dutch school children, aged 9 to 12 years. Perceived popularity and likeability were more strongly correlated with peer reports than self-reports, for both victimization and for bullying others. Self-perceived social acceptance correlated equally strong with peer and self- reports of victimization. Furthermore, peer reports of bullying were also correlated with self-perceived social acceptance, whereas self-reports of bullying were not. All internalizing problems showed stronger relations with self-reports than peer reports; although only the relation between self-reported victimization and internalizing problems was of practical significance. Despite our findings indicating that using only one type of report could be efficient for examining the relation between bullying behaviors and separate child characteristics, both types of report are necessary for a complete understanding of the personal and social well-being of the children involved.

  9. Self-Reported Parenting Behavior and Child Temperament in Families of Toddlers with and without Speech-Language Delay

    Science.gov (United States)

    Perry Carson, Cecyle K.; Carson, David K.; Klee, Thomas; Jackman-Brown, Jennifer

    2007-01-01

    This study examined self-reported parenting behaviors, and child temperament and behavior, based on parental perceptions of 47 toddlers ages 25 to 31 months. Data were obtained via parental reports and direct assessment. Children were identified as having a speech-language delay (SLD, n = 17) or as typically developing (n = 30) based on…

  10. The Role of Sex Hormone Replacement Therapy on Self-Perceived Competence in Adolescents with Delayed Puberty.

    Science.gov (United States)

    Schwab, Jacqueline; Kulin, Howard E.; Susman, Elizabeth J.; Finkelstein, Jordan W.; Chinchilli, Vernon M.; Kunselman, Susan J.; Liben, Lyye S.; D'Arcangelo, M. Rose; Demers, Lawrence M.

    2001-01-01

    Examined role of sex steroids in development of self-perceived competence among adolescents receiving hormone therapy for delayed puberty. Found that hormone treatments had a significant positive effect for both males and females in perceived job competence. Significant positive effects were also obtained for perceptions of romantic appeal and…

  11. Flexible sampling large-scale social networks by self-adjustable random walk

    Science.gov (United States)

    Xu, Xiao-Ke; Zhu, Jonathan J. H.

    2016-12-01

    Online social networks (OSNs) have become an increasingly attractive gold mine for academic and commercial researchers. However, research on OSNs faces a number of difficult challenges. One bottleneck lies in the massive quantity and often unavailability of OSN population data. Sampling perhaps becomes the only feasible solution to the problems. How to draw samples that can represent the underlying OSNs has remained a formidable task because of a number of conceptual and methodological reasons. Especially, most of the empirically-driven studies on network sampling are confined to simulated data or sub-graph data, which are fundamentally different from real and complete-graph OSNs. In the current study, we propose a flexible sampling method, called Self-Adjustable Random Walk (SARW), and test it against with the population data of a real large-scale OSN. We evaluate the strengths of the sampling method in comparison with four prevailing methods, including uniform, breadth-first search (BFS), random walk (RW), and revised RW (i.e., MHRW) sampling. We try to mix both induced-edge and external-edge information of sampled nodes together in the same sampling process. Our results show that the SARW sampling method has been able to generate unbiased samples of OSNs with maximal precision and minimal cost. The study is helpful for the practice of OSN research by providing a highly needed sampling tools, for the methodological development of large-scale network sampling by comparative evaluations of existing sampling methods, and for the theoretical understanding of human networks by highlighting discrepancies and contradictions between existing knowledge/assumptions of large-scale real OSN data.

  12. The effect of process delay on dynamical behaviors in a self-feedback nonlinear oscillator

    Science.gov (United States)

    Yao, Chenggui; Ma, Jun; Li, Chuan; He, Zhiwei

    2016-10-01

    The delayed feedback loops play a crucial role in the stability of dynamical systems. The effect of process delay in feedback is studied numerically and theoretically in the delayed feedback nonlinear systems including the neural model, periodic system and chaotic oscillator. The process delay is of key importance in determining the evolution of systems, and the rich dynamical phenomena are observed. By introducing a process delay, we find that it can induce bursting electric activities in the neural model. We demonstrate that this novel regime of amplitude death also exists in the parameter space of feedback strength and process delay for the periodic system and chaotic oscillator. Our results extend the effect of process delay in the paper of Zou et al.(2013) where the process delay can eliminate the amplitude death of the coupled nonlinear systems.

  13. Influence of social motivation, self-perception of social efficacy and normative adjustment in the peer setting.

    Science.gov (United States)

    Herrera López, Mauricio; Romera Félix, Eva M; Ortega Ruiz, Rosario; Gómez Ortiz, Olga

    2016-01-01

    The first objective of this study was to adapt and test the psychometric properties of the Social Achievement Goal Scale (Ryan & Shim, 2006) in Spanish adolescent students. The second objective sought to analyse the influence of social goals, normative adjustment and self-perception of social efficacy on social adjustment among peers. A total of 492 adolescents (54.1% females) attending secondary school (12-17 years; M = 13.8, SD = 1.16) participated in the study. Confirmatory factor analysis and structural equation modelling were performed. The validation confirmed the three-factor structure of the original scale: social development goals, social demonstration-approach goals and social demonstration-avoidance goals. The structural equation model indicated that social development goals and normative adjustment have a direct bearing on social adjustment, whereas the social demonstration-approach goals (popularity) and self-perception of social efficacy with peers and teachers exert an indirect influence. The Spanish version of the Social Achievement Goal Scale (Ryan & Shim, 2006) yielded optimal psychometric properties. Having a positive motivational pattern, engaging in norm-adjusted behaviours and perceiving social efficacy with peers is essential to improving the quality of interpersonal relationships.

  14. Individual differences in the development of self-regulation during pre-adolescence: connections to context and adjustment.

    Science.gov (United States)

    King, Kevin M; Lengua, Liliana J; Monahan, Kathryn C

    2013-01-01

    Difficulties with self-regulation are implicated in the development of emotional and behavioral problems during adolescence. Although children's ability to regulate their behaviors continues to improve throughout childhood and adolescence, it remains unclear how contextual risk factors might influence this development during the transition to adolescence, or how variation in the development of self-regulation predicts adjustment. Using a community sample of 214 8-12 year-olds (T1 M = 9.5, SD = 1.01), we examined growth trajectories of effortful control and impulsivity over three years and tested predictors and outcomes of these trajectories. Although predictors of initial levels of self-regulation were largely equivalent for both effortful control and impulsivity, contextual risk factors were related to variations in the development of impulsivity but not effortful control. However, increases in effortful control, but not impulsivity, were associated with level and rate of change in adjustment problems and positive adjustment, suggesting that different dimensions of self-regulation have different antecedents and outcomes in pre-adolescence and adolescence.

  15. Psychological Adjustment among Israeli Adolescent Immigrants: A Report on Life Satisfaction, Self-Concept, and Self-Esteem.

    Science.gov (United States)

    Ullman, Chana; Tatar, Moshe

    2001-01-01

    Examined self-concept, self-esteem, and life satisfaction among 119 immigrants to Israel from the former Soviet Union and 135 Israeli classmates. Immigrant adolescents reported less satisfaction with their lives and less congruence between their self-concept and the ways in which they were perceived by others. (SLD)

  16. A self contained Linux based data acquisition system for 2D detectors with delay line readout

    Science.gov (United States)

    Beltran, D.; Toledo, J.; Klora, A. C.; Ramos-Lerate, I.; Martínez, J. C.

    2007-01-01

    This article describes a fast and self-contained data acquisition system for 2D gas-filled detectors with delay line readout. It allows the realization of time resolved experiments in the millisecond scale. The acquisition system comprises of an industrial PC running Linux, a commercial time-to-digital converter and an in-house developed histogramming PCI card. The PC provides a mass storage for images and a graphical user interface for system monitoring and control. The histogramming card builds images with a maximum count rate of 5 MHz limited by the time-to-digital converter. Histograms are transferred to the PC at 85 MB/s. This card also includes a time frame generator, a calibration channel unit and eight digital outputs for experiment control. The control software was developed for easy integration into a beamline, including scans. The system is fully operational at the Spanish beamline BM16 at the ESRF in France, the neutron beamlines Adam and Eva at the ILL in France, the Max Plank Institute in Stuttgart in Germany, the University of Copenhagen in Denmark and at the future ALBA synchrotron in Spain. Some representative collected images from synchrotron and neutron beamlines are presented.

  17. Trustworthiness, Friendships and Self-Control: Factors that Contribute to Young Children's School Adjustment

    Science.gov (United States)

    Betts, Lucy R.; Rotenberg, Ken J.

    2007-01-01

    The aim of present study was to examine the relationship between young children's peer-reported trustworthiness and their school adjustment. Two hundred and eleven (103 male and 108 female) children in the United Kingdom (mean age = 6 years 2 months) took part in this study. Measures of peer-reported trustworthiness, child-rated school adjustment,…

  18. The brief self-control scale predicts jail inmates' recidivism, substance dependence, and post-release adjustment.

    Science.gov (United States)

    Malouf, Elizabeth T; Schaefer, Karen E; Witt, Edward A; Moore, Kelly E; Stuewig, Jeffrey; Tangney, June P

    2014-03-01

    Previous research finds that self-control is positively associated with adaptive and negatively associated with maladaptive behavior. However, most previous studies use cross-sectional designs, low-risk samples, and limited assessments of self-control. This study of 553 jail inmates examined the relationship of a valid measure of self-control (Brief Self-Control Scale) completed on incarceration with behavior before, during, and 1 year after incarceration. After controlling for positive impression management (PIM), self-control was negatively related to substance misuse, suicidality, risky sex, and criminal history prior to incarceration and post-release illegal substance misuse, recidivism, and positive adjustment. Lower self-control predicted increases in substance dependence at post-release compared with pre-incarceration. Self-control was not related to misbehavior during incarceration, nor alcohol use or HIV-risk behavior 1 year post-release. Results were consistent as a function of age, race, and gender. This study supports self-control as an important risk and protective factor in a sample of criminal offenders.

  19. The Brief Self-Control Scale Predicts Jail Inmates’ Recidivism, Substance Dependence, and Post-Release Adjustment

    Science.gov (United States)

    2015-01-01

    Previous research finds that self-control is positively associated with adaptive and negatively associated with maladaptive behavior. However, most previous studies employ cross-sectional designs, low-risk samples, and limited assessments of self-control. This study of 553 jail inmates examined the relationship of a valid measure of self-control (Brief Self-Control Scale; BSCS) completed upon incarceration with behavior before, during, and one year after incarceration. After controlling for positive impression management (PIM), self-control was negatively related to substance misuse, suicidality, risky sex, and criminal history prior to incarceration and post-release illegal substance misuse, recidivism, and positive adjustment. Lower self-control predicted increases in substance dependence at post-release compared to pre-incarceration. Self-control was not related to misbehavior during incarceration, nor alcohol use or HIV-risk behavior one year post-release. Results were consistent as a function of age, race, and gender. This study supports self-control as an important risk and protective factor in a sample of criminal offenders. PMID:24345712

  20. Friends' Knowledge of Youth Internalizing and Externalizing Adjustment: Accuracy, Bias, and the Influences of Gender, Grade, Positive Friendship Quality, and Self-Disclosure

    Science.gov (United States)

    Swenson, Lance P.; Rose, Amanda J.

    2009-01-01

    Some evidence suggests that close friends may be knowledgeable of youth's psychological adjustment. However, friends are understudied as reporters of adjustment. The current study examines associations between self- and friend-reports of internalizing and externalizing adjustment in a community sample of fifth-, eighth-, and eleventh-grade youth.…

  1. Factors Impacting the Psychological Adjustment of Saudi Arabian International Students in the United States: Self-Esteem, Social Support, and Discrimination

    Science.gov (United States)

    Rundles, Kyle

    2013-01-01

    International populations face difficulties adjusting to a new culture. This is especially true for international students, who have to adjust to a new country and face academic demands concurrently. Research has explored various factors that impact psychological adjustment of international students and show the influence of self-esteem and social…

  2. Me, Myself, and Money II: Relative Deprivation Predicts Disordered Gambling Severity via Delay Discounting, Especially Among Gamblers Who Have a Financially Focused Self-Concept.

    Science.gov (United States)

    Tabri, Nassim; Will Shead, N; Wohl, Michael J A

    2017-02-02

    In the current research, we examined whether the known link between relative deprivation and disordered gambling (via delay discounting; i.e., preferences for immediate smaller rewards relative to delayed larger rewards) is moderated by the extent to which gamblers have a financially focused self-concept. Specifically, we hypothesized that delay discounting would be a strong predictor of disordered gambling among those who base their self-worth on their financial success. To test this moderated-mediation model, a community sample of gamblers (N = 239) completed measures that assessed relative deprivation, delay discounting, financially focused self-concept, and disordered gambling severity. As predicted, people who felt more relative deprivation reported more severe symptoms of disordered gambling and this association was mediated by delay discounting. Importantly, this mediated relationship was moderated by the extent to which participants' self-concept was focused on financial success. Among participants whose self-concept was high in financial focus, greater delay discounting (stemming from relative deprivation) was a strong predictor of disordered gambling. Among people whose self-concept was low in financial focus, delay discounting (stemming from relative deprivation) was a weak predictor of disordered gambling. Thus, the magnitude of the indirect effect of relative deprivation on disordered gambling severity was larger among people with a more financially focused self-concept-an effect mediated by delay discounting. These findings suggest that targeting gamblers' financial focus in prevention and treatment interventions may be instrumental in curtailing the development and maintenance of disordered gambling.

  3. Longitudinal Study of Self-Regulation, Positive Parenting, and Adjustment Problems among Physically Abused Children

    Science.gov (United States)

    Kim-Spoon, Jungmeen.; Haskett, Mary E.; Longo, Gregory S.; Nice, Rachel.

    2012-01-01

    Objective: Research using normative and high-risk samples indicates a significant link between problems with self-regulation and child maladjustment. Nevertheless, little is known about the processes that may modify the link between self-regulation and maladjustment. This longitudinal study examined the joint contributions of child self-regulation…

  4. Parenting Styles as They Relate to Self-Esteem and Adjustment.

    Science.gov (United States)

    Sigward, Timothy M.; And Others

    This study was conducted to examine the relationships between parental styles and the components of self-esteem that correspond to Damon and Hart's conceptualization of the self. Specifically, high levels of both parental control and parent acceptance were hypothesized to be positively related to self-esteem. Undergraduate students (N=225) rated…

  5. Type A behavior in housewives: relation to work, marital adjustment, stress, tension, health, fear-of-failure and self esteem.

    Science.gov (United States)

    Houston, B K; Kelly, K E

    1987-01-01

    Ninety-five housewives were administered the Framingham Type A Scale and the Jenkins Activity Survey. Information concerning various aspects of their daily lives as well as various psychological and psychosocial variables were obtained via questionnaire and interview. Type As were found to differ from Type Bs in having more stressful work-related experiences. Further, Type As reported poorer marital adjustment and tended to report more marital disharmony than did Type Bs. Type A behavior was also related to more self-reported stress, tension, and physical health problems. Finally, Type As reported lower covert self-esteem and tended to report more fear-of-failure than Type Bs.

  6. The sensitivity of Turing self-organization to biological feedback delays: 2D models of fish pigmentation

    KAUST Repository

    Gaffney, E. A.

    2013-10-01

    © The authors 2013. Turing morphogen models have been extensively explored in the context of large-scale self-organization in multicellular biological systems. However, reconciling the detailed biology of morphogen dynamics, while accounting for time delays associated with gene expression, reveals aberrant behaviours that are not consistent with early developmental self-organization, especially the requirement for exquisite temporal control. Attempts to reconcile the interpretation of Turing\\'s ideas with an increasing understanding of the mechanisms driving zebrafish pigmentation suggests that one should reconsider Turing\\'s model in terms of pigment cells rather than morphogens (Nakamasu et al., 2009, PNAS, 106, 8429-8434; Yamaguchi et al., 2007, PNAS, 104, 4790-4793). Here the dynamics of pigment cells is subject to response delays implicit in the cell cycle and apoptosis. Hence we explore simulations of fish skin patterning, focussing on the dynamical influence of gene expression delays in morphogen-based Turing models and response delays for cell-based Turing models. We find that reconciling the mechanisms driving the behaviour of Turing systems with observations of fish skin patterning remains a fundamental challenge.

  7. The sensitivity of Turing self-organization to biological feedback delays: 2D models of fish pigmentation.

    Science.gov (United States)

    Gaffney, E A; Lee, S Seirin

    2015-03-01

    Turing morphogen models have been extensively explored in the context of large-scale self-organization in multicellular biological systems. However, reconciling the detailed biology of morphogen dynamics, while accounting for time delays associated with gene expression, reveals aberrant behaviours that are not consistent with early developmental self-organization, especially the requirement for exquisite temporal control. Attempts to reconcile the interpretation of Turing's ideas with an increasing understanding of the mechanisms driving zebrafish pigmentation suggests that one should reconsider Turing's model in terms of pigment cells rather than morphogens (Nakamasu et al., 2009, PNAS, 106: , 8429-8434; Yamaguchi et al., 2007, PNAS, 104: , 4790-4793). Here the dynamics of pigment cells is subject to response delays implicit in the cell cycle and apoptosis. Hence we explore simulations of fish skin patterning, focussing on the dynamical influence of gene expression delays in morphogen-based Turing models and response delays for cell-based Turing models. We find that reconciling the mechanisms driving the behaviour of Turing systems with observations of fish skin patterning remains a fundamental challenge. © The Authors 2013. Published by Oxford University Press on behalf of the Institute of Mathematics and its Applications. All rights reserved.

  8. Self-Esteem and Family Cohesion: The Child's Perspective and Adjustment.

    Science.gov (United States)

    Cooper, Judith E.; And Others

    1983-01-01

    Investigated the relationship between children's self-esteem and their perceptions of family cohesion. Administered questionnaires assessing children's self-esteem and perceptions of family happiness and support to 467 fifth- and sixth-grade children. Results indicated that children from different family types experienced varying degrees of…

  9. Delay Discounting Mediates Parent-Adolescent Relationship Quality and Risky Sexual Behavior for Low Self-Control Adolescents.

    Science.gov (United States)

    Kahn, Rachel E; Holmes, Christopher; Farley, Julee P; Kim-Spoon, Jungmeen

    2015-09-01

    Parent-adolescent relationship quality and delay discounting may play important roles in adolescents' sexual decision making processes, and levels of self-control during adolescence could act as a buffer within these factors. This longitudinal study included 219 adolescent (55 % male; mean age = 12.66 years at Wave 1; mean age = 15.10 years at Wave 2) and primary caregiver dyads. Structural equation modeling (SEM) was utilized to determine whether delay discounting mediated the association between parent-adolescent relationship quality and adolescents' risky sexual behavior and how this mediated association may differ between those with high versus low self-control. The results revealed parent-adolescent relationship quality plays a role in the development of risky sexual behavior indirectly through levels of delay discounting, but only for adolescents with low self-control. These findings could inform sex education policies and health prevention programs that address adolescent risky sexual behavior.

  10. Node Self-Deployment Algorithm Based on an Uneven Cluster with Radius Adjusting for Underwater Sensor Networks

    Directory of Open Access Journals (Sweden)

    Peng Jiang

    2016-01-01

    Full Text Available Existing move-restricted node self-deployment algorithms are based on a fixed node communication radius, evaluate the performance based on network coverage or the connectivity rate and do not consider the number of nodes near the sink node and the energy consumption distribution of the network topology, thereby degrading network reliability and the energy consumption balance. Therefore, we propose a distributed underwater node self-deployment algorithm. First, each node begins the uneven clustering based on the distance on the water surface. Each cluster head node selects its next-hop node to synchronously construct a connected path to the sink node. Second, the cluster head node adjusts its depth while maintaining the layout formed by the uneven clustering and then adjusts the positions of in-cluster nodes. The algorithm originally considers the network reliability and energy consumption balance during node deployment and considers the coverage redundancy rate of all positions that a node may reach during the node position adjustment. Simulation results show, compared to the connected dominating set (CDS based depth computation algorithm, that the proposed algorithm can increase the number of the nodes near the sink node and improve network reliability while guaranteeing the network connectivity rate. Moreover, it can balance energy consumption during network operation, further improve network coverage rate and reduce energy consumption.

  11. Gender as a moderator of self-esteem in socially adjusted and maladjusted youth

    Directory of Open Access Journals (Sweden)

    Hubert Kupiec

    2014-06-01

    Full Text Available The article presents the results of research into the self-esteem of adolescents. The comparative analysis conducted reveals that the self-esteem of juveniles placed in social rehabilitation institutions is higher than the self-esteem of youth attending public schools and that gender is not a statistically significant differentiating factor. The text also includes a review of empirical studies of other authors dealing with this issue, a discussion of the obtained results, and practical recommendations useful in the social rehabilitation juveniles

  12. The dopamine D2 antagonist eticlopride accelerates extinction and delays reacquisition of food self-administration in rats.

    Science.gov (United States)

    Koerber, Jonathon; Goodman, David; Barnes, Jesse L; Grimm, Jeffrey W

    2013-12-01

    Dopamine receptors are implicated in the reinforcing effects of food and drug reinforcement. The purpose of this study was to evaluate whether blocking D2 dopamine receptors during extinction (secondary reinforcement) would affect reacquisition of responding for food pellets (primary reinforcement). Food-restricted rats self-administered (fixed-ratio 1) food pellets in 1-h daily sessions for 7 days. For the next 7 days rats responded in extinction conditions. Before each extinction session rats were injected with saline or the dopamine D2 antagonist eticlopride (0.03 mg/kg, subcutaneously). After the extinction phase, rats were allowed to reacquire food pellet self-administration in seven daily sessions, and received saline or eticlopride before each session. Four treatment groups were represented: saline extinction, saline reacquisition; eticlopride extinction, saline reacquisition; saline extinction, eticlopride reacquisition; and eticlopride extinction, eticlopride reacquisition. Locomotor activity did not differ between eticlopride-treated and saline-treated rats throughout the study. Extinction was accelerated in eticlopride-treated rats. Eticlopride also delayed reacquisition of food self-administration compared with saline-treated rats. Rats administered eticlopride during extinction showed delayed reacquisition and a decreased response rate for food during the reacquisition phase. Indirectly reducing the value of a reinforcer in this way may provide a novel approach for reducing addiction-related food or drug self-administration behaviors.

  13. Eccentric exercise and delayed onset muscle soreness of the quadriceps induce adjustments in agonist-antagonist activity, which are dependent on the motor task.

    Science.gov (United States)

    Vila-Chã, C; Hassanlouei, H; Farina, D; Falla, D

    2012-02-01

    This study investigates the effects of eccentric exercise and delayed onset muscle soreness (DOMS) of the quadriceps on agonist-antagonist activity during a range of motor tasks. Ten healthy volunteers (age, mean ± SD, 24.9 ± 3.2 years) performed maximum voluntary contractions (MVC) and explosive isometric contractions of the knee extensors followed by isometric contractions at 2.5, 5, 10, 15, 20, and 30% MVC at baseline, immediately after and 24 h after eccentric exercise of the quadriceps. During each task, force of the knee extensors and surface EMG of the vasti and hamstrings muscles were recorded concurrently. Rate of force development (RFD) was computed from the explosive isometric contraction, and the coefficient of variation of the force (CoV) signal was estimated from the submaximal contractions. Twenty-four hours after exercise, the subjects rated their perceived pain intensity as 4.1 ± 1.2 (score out of 10). The maximum RFD and MVC of the knee extensors was reduced immediately post- and 24 h after eccentric exercise compared to baseline (average across both time points: 19.1 ± 17.1% and 11.9 ± 9.8% lower, respectively, P eccentric exercise (up to 66% higher than baseline, P exercise during the presence of DOMS (P exercise and was accompanied by increased antagonist EMG for the explosive contraction only. On the contrary, reduced force steadiness was accompanied by a general increase in EMG amplitude of the vasti muscles and was accompanied by increased antagonist activity, but only at higher force levels (>15% MVC). This study shows that eccentric exercise and subsequent DOMS of the quadriceps reduce the maximal force, rate of force development and force steadiness of the knee extensors, and is accompanied by different adjustments of agonist and antagonist muscle activities.

  14. Relations among adults' remembrances of parental acceptance-rejection in childhood, self-reported psychological adjustment, and adult psychopathology.

    Science.gov (United States)

    Akün, Ebru

    2017-08-01

    The aim of the study was to examine relationships among recollections of maternal and paternal acceptance-rejection in childhood and the level of psychological adjustment among adults diagnosed with schizophrenia, social anxiety, and nonclinical control. The study focused primarily on adults with schizophrenia and social anxiety in comparison to nonclinical adults. Fifty-three adults diagnosed with schizophrenia, 51 adults with self-reported social anxiety, and 147 nonclinical controls between the ages of 18 and 62 participated in the study. Data were collected using adult versions of the Parental Acceptance-Rejection Questionnaire for mothers and for fathers, Personality Assessment Questionnaire, Brief Symptom Inventory, Liebowitz Social Anxiety Scale, and the Demographic Information Form. Findings of analyses showed that participants in the schizophrenia and social anxiety groups remembered having experienced significantly more maternal rejection in childhood than did the nonclinical group. Patient with schizophrenia also reported more recollections of paternal rejection than the nonclinical group. Both clinical groups self-reported more psychological maladjustment than did the nonclinical group. Regression analysis indicated that even though the overall psychological adjustment of adults diagnosed with schizophrenia was predicted by both maternal and paternal acceptance-rejection, psychological adjustment of adults in the social anxiety group was predicted only by maternal (but not paternal) acceptance-rejection. This study provides evidence about the long-lasting associations between adults' recollections of parental acceptance-rejection in childhood and their psychological adjustment in two mental disorders, in which genetic and environmental factors have a different weight. Copyright © 2017 Elsevier Inc. All rights reserved.

  15. Self-adjustment of Carrying Capacity of Concrete Embedded with CFRC

    Institute of Scientific and Technical Information of China (English)

    Wu YAO

    2006-01-01

    By heating up the embedded carbon fiber reinforced cement based material (CFRC), the carrying capacity and deformation of concrete member could be adjusted. The relationship between temperature difference and expansion strain of CFRC was demonstrated, and the temperature-deformation-load effect of concrete embedded with CFRC was studied. Heating the CFRC up to different temperatures resulted in different degree of inner pre-stress in concrete. Thus, the load capacity of concrete could be regulated owing to counteracting the pre-stress.

  16. Patterns of Father Self Evaluations among Mexican and European American Men and Links to Adolescent Adjustment

    OpenAIRE

    2012-01-01

    A mixed-method study identified profiles of fathers who mentioned key dimensions of their parenting and linked profile membership to adolescents’ adjustment using data from 337 European American, Mexican American and Mexican immigrant fathers and their early adolescent children. Father narratives about what fathers do well as parents were thematically coded for the presence of five fathering dimensions: emotional quality (how well father and child get along), involvement (amount of time spent...

  17. Time dependent Bloch mode transmittance in self-assembled random photonic crystal for photonic time delay switching

    Science.gov (United States)

    Bingi, Jayachandra; Nair, Radhika V.; Vijayan, C.

    2017-02-01

    Light propagation and localization in a random structure with a periodic background is an upcoming paradigm for novel photonic applications. This paper demonstrates the phenomenon of time dependent transmittance of evanescent Bloch modes (EBM) in ZnS random photonic crystal (RPC) which forms the basis for photonic delay switching. The RPC is fabricated by colloidal self-assembly with ZnS nanospheres of size 215 nm. An anomalous reciprocity and time dependent transmission at EBM (mid band gap wavelength) are observed in coherent back scattering and transmission studies respectively. These are explained on the basis of restricted propagation of EBMs through random channels in the periodic background and enhanced field storage inside RPC. The channelized propagation of EBMs is evident from decreasing time delay of transmittance at reduced thicknesses. The proportionality between transmission time delay and incident power confirms photon (field) storage within the RPC. The results indicate that structures with systematically engineered EBM channels can work as wavelength selective delay switch and further provide a short time photon storage system under non-absorbing conditions.

  18. Can adolescents learn self-control? Delay of gratification in the development of control over risk taking.

    Science.gov (United States)

    Romer, Daniel; Duckworth, Angela L; Sznitman, Sharon; Park, Sunhee

    2010-09-01

    Recent findings from developmental neuroscience suggest that the adolescent brain is too immature to exert control over impulsive drives, such as sensation seeking, that increase during adolescence. Using a discounting of delayed reward paradigm, this research examines the ability to delay gratification as a potential source of control over risk-taking tendencies that increase during adolescence. In addition, it explores the role of experience resulting from risk taking as well as future time perspective as contributors to the development of this ability. In a nationally representative sample (n = 900) of young people aged 14-22, a structural equation analysis shows that risk taking as assessed by use of three popular drugs (tobacco, marijuana, and alcohol) is inversely related to the ability to delay gratification. The relation is robust across gender, age, and different levels of sensation seeking. In addition, high sensation seekers exhibit dramatic age-related increase in delay of gratification, lending support to the hypothesis that engaging in risky behavior provides experience that leads to greater patience for long-term rewards. The findings support the conclusion that a complete understanding of the development of self-control must consider individual differences not easily explained by universal trends in brain maturation.

  19. The association between self-consciousness about appearance and psychological adjustment among newly diagnosed breast cancer patients and survivors: the moderating role of appearance investment.

    Science.gov (United States)

    Moreira, Helena; Canavarro, Maria Cristina

    2012-03-01

    This study examined the moderating role of two facets of appearance investment (self-evaluative salience (SES) and motivational salience (MS)) in the relationship between self-consciousness about appearance and psychological adjustment (depression, anxiety and psychological quality of life (QoL)) in a sample of 134 breast cancer patients (68 newly diagnosed patients and 66 survivors). No significant differences were found between groups on body image variables. Among survivors, the associations between self-consciousness about appearance and the outcome variables were only significant at high (depression, psychological QoL) levels and at moderate (psychological QoL) levels of SES. Self-consciousness about appearance contributed to poor adjustment in both groups. This study demonstrates that appearance investment plays a key role in patients' adjustment and highlights the SES-MS distinction. SES seems to be a vulnerability factor for poor adjustment, and MS seems to be a protective factor that helps women cope with changes in appearance.

  20. Self-Disclosure Flexibility, Empathy, and Perceptions of Adjustment and Attraction.

    Science.gov (United States)

    Neimeyer, Greg J.; Banikiotes, Paul G.

    1981-01-01

    Self-disclosure flexibility has been associated with social perceptiveness and empathy. This study tested the generalizability of the social perceptiveness hypothesis to in-vivo interactions. Findings indicated that greater flexibility is associated with higher levels of empathy and interpersonal attraction in structured settings. (Author/RC)

  1. Parenting Styles Influence on Locus of Control, Self-Efficacy and Academic Adjustment in College Students

    Science.gov (United States)

    Mills, Kimberly Tracey

    2010-01-01

    The purpose of this study was to investigate the relationship between perceived parenting style, locus of control, self-efficacy, and student outcome (i.e. academic performance, GPA) in a sample of college students. The relationship among gender and ethnicity were also examined across these variables. There were 100 participants in this study,…

  2. Parenting and Children's Adjustment Problems: The Mediating Role of Self-Esteem and Peer Relations

    Science.gov (United States)

    Georgiou, Nicos A.; Stavrinides, Panayiotis; Georgiou, Stelios

    2016-01-01

    The aim of this study was to investigate the impact of parental and personal characteristics on children's internalizing/externalizing problems. Further, this study aimed to examine personal characteristics (self-esteem, peer relations) as mediators in the relation between parenting and internalizing/externalizing problems. In order to address…

  3. Self-organized synchronization of digital phase-locked loops with delayed coupling in theory and experiment

    Science.gov (United States)

    Wetzel, Lucas; Jörg, David J.; Pollakis, Alexandros; Rave, Wolfgang; Fettweis, Gerhard; Jülicher, Frank

    2017-01-01

    Self-organized synchronization occurs in a variety of natural and technical systems but has so far only attracted limited attention as an engineering principle. In distributed electronic systems, such as antenna arrays and multi-core processors, a common time reference is key to coordinate signal transmission and processing. Here we show how the self-organized synchronization of mutually coupled digital phase-locked loops (DPLLs) can provide robust clocking in large-scale systems. We develop a nonlinear phase description of individual and coupled DPLLs that takes into account filter impulse responses and delayed signal transmission. Our phase model permits analytical expressions for the collective frequencies of synchronized states, the analysis of stability properties and the time scale of synchronization. In particular, we find that signal filtering introduces stability transitions that are not found in systems without filtering. To test our theoretical predictions, we designed and carried out experiments using networks of off-the-shelf DPLL integrated circuitry. We show that the phase model can quantitatively predict the existence, frequency, and stability of synchronized states. Our results demonstrate that mutually delay-coupled DPLLs can provide robust and self-organized synchronous clocking in electronic systems. PMID:28207779

  4. An examination of biracial college youths' family ethnic socialization, ethnic identity, and adjustment: do self-identification labels and university context matter?

    Science.gov (United States)

    Brittian, Aerika S; Umaña-Taylor, Adriana J; Derlan, Chelsea L

    2013-04-01

    This study examined family ethnic socialization, ethnic identity, and adjustment among Latino/White and Asian/White biracial college students (n = 507), with special attention to how ethnic self-identification and university ethnic composition informed the ethnic identity process. Findings indicated that family ethnic socialization was positively related to participants' ethnic identity exploration and resolution, but not ethnic identity affirmation. Furthermore, ethnic identity resolution and affirmation were associated with higher self-acceptance and self-esteem, and lower depressive symptoms. Importantly, university ethnic composition moderated the association between ethnic identity resolution and anxiety, such that resolution promoted adjustment in contexts that were relatively more ethnically diverse. University ethnic composition also moderated the association between ethnic identity affirmation and both self-esteem and self-acceptance, such that affirmation was associated with better adjustment but only in schools that were less ethnically diverse.

  5. Patterns of Father Self Evaluations among Mexican and European American Men and Links to Adolescent Adjustment.

    Science.gov (United States)

    Perez-Brena, Norma J; Cookston, Jeffrey T; Fabricius, William V; Saenz, Delia

    2012-01-01

    A mixed-method study identified profiles of fathers who mentioned key dimensions of their parenting and linked profile membership to adolescents' adjustment using data from 337 European American, Mexican American and Mexican immigrant fathers and their early adolescent children. Father narratives about what fathers do well as parents were thematically coded for the presence of five fathering dimensions: emotional quality (how well father and child get along), involvement (amount of time spent together), provisioning (the amount of resources provided), discipline (the amount and success in parental control), and role modeling (teaching life lessons through example). Next, latent class analysis was used to identify three patterns of the likelihood of mentioning certain fathering dimensions: an emotionally-involved group mentioned emotional quality and involvement; an affective-control group mentioned emotional quality, involvement, discipline and role modeling; and an affective-model group mentioned emotional quality and role modeling. Profiles were significantly associated with subsequent adolescents' reports of adjustment such that adolescents of affective-control fathers reported significantly more externalizing behaviors than adolescents of emotionally-involved fathers.

  6. A self-adjustable four-point probing system using polymeric three dimensional coils and non-toxic liquid metal

    Energy Technology Data Exchange (ETDEWEB)

    Oyunbaatar, Nomin-Erdene; Choi, Young Soo; Lee, Dong-Weon, E-mail: mems@jnu.ac.kr [MEMS and Nanotechnology Laboratory, School of Mechanical Engineering, Chonnam National University, Gwangju 500757 (Korea, Republic of)

    2015-12-15

    This paper describes a self-adjustable four-point probe (S4PP) system with a square configuration. The S4PP system consists of 3D polymer coil springs for the independent operation of each tungsten (W) probe, microfluidic channels filled with a nontoxic liquid metal, and a LabView-based control system. The 3D coil springs made by PMMA are fabricated with a 3D printer and are positioned in a small container filled with the non-toxic liquid metal. This unique configuration allows independent self-adjustment of the probe heights for precise measurements of the electrical properties of both flexible and large-step-height microsamples. The feasibility of the fabricated S4PP system is evaluated by measuring the specific resistance of Cr and Au thin films deposited on silicon wafers. The system is then employed to evaluate the electrical properties of a Au thin film deposited onto a flexible and easily breakable silicon diaphragm (spring constant: ∼3.6 × 10{sup −5} N/m). The resistance of the Cr thin films (thickness: 450 nm) with step heights of 60 and 90 μm is also successfully characterized. These experimental results indicate that the proposed S4PP system can be applied to common metals and semiconductors as well as flexible and large-step-height samples.

  7. A self-adjustable four-point probing system using polymeric three dimensional coils and non-toxic liquid metal.

    Science.gov (United States)

    Oyunbaatar, Nomin-Erdene; Choi, Young Soo; Choi, Yong Soo; Lee, Dong-Weon

    2015-12-01

    This paper describes a self-adjustable four-point probe (S4PP) system with a square configuration. The S4PP system consists of 3D polymer coil springs for the independent operation of each tungsten (W) probe, microfluidic channels filled with a nontoxic liquid metal, and a LabView-based control system. The 3D coil springs made by PMMA are fabricated with a 3D printer and are positioned in a small container filled with the non-toxic liquid metal. This unique configuration allows independent self-adjustment of the probe heights for precise measurements of the electrical properties of both flexible and large-step-height microsamples. The feasibility of the fabricated S4PP system is evaluated by measuring the specific resistance of Cr and Au thin films deposited on silicon wafers. The system is then employed to evaluate the electrical properties of a Au thin film deposited onto a flexible and easily breakable silicon diaphragm (spring constant: ∼3.6 × 10(-5) N/m). The resistance of the Cr thin films (thickness: 450 nm) with step heights of 60 and 90 μm is also successfully characterized. These experimental results indicate that the proposed S4PP system can be applied to common metals and semiconductors as well as flexible and large-step-height samples.

  8. Hypertension: Development of a prediction model to adjust self-reported hypertension prevalence at the community level

    Directory of Open Access Journals (Sweden)

    Mentz Graciela

    2012-09-01

    Full Text Available Abstract Background Accurate estimates of hypertension prevalence are critical for assessment of population health and for planning and implementing prevention and health care programs. While self-reported data is often more economically feasible and readily available compared to clinically measured HBP, these reports may underestimate clinical prevalence to varying degrees. Understanding the accuracy of self-reported data and developing prediction models that correct for underreporting of hypertension in self-reported data can be critical tools in the development of more accurate population level estimates, and in planning population-based interventions to reduce the risk of, or more effectively treat, hypertension. This study examines the accuracy of self-reported survey data in describing prevalence of clinically measured hypertension in two racially and ethnically diverse urban samples, and evaluates a mechanism to correct self-reported data in order to more accurately reflect clinical hypertension prevalence. Methods We analyze data from the Detroit Healthy Environments Partnership (HEP Survey conducted in 2002 and the National Health and Nutrition Examination (NHANES 2001–2002 restricted to urban areas and participants 25 years and older. We re-calibrate measures of agreement within the HEP sample drawing upon parameter estimates derived from the NHANES urban sample, and assess the quality of the adjustment proposed within the HEP sample. Results Both self-reported and clinically assessed prevalence of hypertension were higher in the HEP sample (29.7 and 40.1, respectively compared to the NHANES urban sample (25.7 and 33.8, respectively. In both urban samples, self-reported and clinically assessed prevalence is higher than that reported in the full NHANES sample in the same year (22.9 and 30.4, respectively. Sensitivity, specificity and accuracy between clinical and self-reported hypertension prevalence were ‘moderate to good’ within

  9. Control of self-excitation mode in thermoacoustic system using heat phase adjuster

    Science.gov (United States)

    Kido, Aiko; Sakamoto, Shin-ichi; Taga, Kazusa; Watanabe, Yoshiaki

    2016-07-01

    The capability of a heat phase adjuster (HPA) to control the resonance mode in a loop-tube-type thermoacoustic system by locally heating the outside is experimentally investigated. It is shown that the HPA enables the resonance mode of the tube to shift to lower modes with higher thermoacoustic conversion efficiency, thus significantly enhancing the energy conversion efficiency. The transition of the resonance mode due to the stepwise change in the input electric power to the HPA is also investigated. As a result, it is demonstrated that the resonance mode changes with the temperature and a threshold exists for the HPA temperature at which the transition is induced. These results suggest the possibility of externally controlling a loop-tube-type thermoacoustic system.

  10. Self-efficacy among university faculty: how to develop an adjusted scale

    OpenAIRE

    Vera Perea, María; Salanova Soria, Marisa; Martín del Río, Beatriz

    2011-01-01

    The aim of this study was to describe the procedure carried out to develop a scale to measure specific self-efficacy in one particular do-main, i.e. university faculty, following the recommendations from Social Cognitive Theory by Albert Bandura. The scale that was created considers the triple work profile of university faculty (i.e. teaching, research and management). By using confirmatory factor analyses in a sample of 166 university faculty members, we found a superior fit for the three-fa...

  11. Immediate and delayed photoactivation of self-adhesive resin cements and retention of glass-fiber posts

    Directory of Open Access Journals (Sweden)

    André Luis Faria-e-Silva

    2014-01-01

    Full Text Available The aim of this study was to evaluate the effect of immediate and delayed photoactivation of self-adhesive resin cements (SARCs on the retention of glass-fiber posts luted into root canals. Bovine incisors were endodontically treated, and post holes of 9 mm in depth were prepared. Fiber posts were luted using one of two SARCs, BisCem(r (Bisco Inc., Schaumburg, USA or RelyX Unicem clicker (3M ESPE, Saint Paul, USA, or a regular (etch-and-rinse resin cement (AllCem; FGM, Joinvile, Brazil. Photoactivation was performed immediately, or at 5 or 10 min after cementation. Root/post specimens were transversely sectioned 7 days after luting into 1-mm-thick slices, which were submitted to push-out testing in a mechanical testing machine. Bond strength data were analyzed by two-way ANOVA and Student-Newman-Keuls' method (α = 0.05. Immediate photoactivation resulted in the highest bond strength for Unicem. BisCem(r demonstrated higher bond strength values when photoactivated after a 10-min delay. Immediate photoactivation yielded the lowest bond strengths for AllCem, although no differences in bond strength were observed between photoactivation delayed by 5 and 10 min. In conclusion, the moment of resin cement photoactivation may affect the intraradicular retention of fiber posts, depending upon the resin cement used for luting.

  12. Cold welding of gold nanoparticles on mica substrate: Self-adjustment and enhanced diffusion

    Science.gov (United States)

    Cha, Song-Hyun; Park, Youmie; Han, Jeong Woo; Kim, Kyeounghak; Kim, Hyun-Seok; Jang, Hong-Lae; Cho, Seonho

    2016-01-01

    From the images of HR-TEM, FE-SEM, and AFM, the cold welding of gold nanoparticles (AuNPs) on a mica substrate is observed. The cold-welded gold nanoparticles of 25 nm diameters are found on the mica substrate in AFM measurement whereas the size of cold welding is limited to 10 nm for nanowires and 2~3 nm for nanofilms. Contrary to the nanowires requiring pressure, the AuNPs are able to rotate freely due to the attractive forces from the mica substrate and thus the cold welding goes along by adjusting lattice structures. The gold nanoparticles on the mica substrate are numerically modeled and whose physical characteristics are obtained by the molecular dynamic simulations of LAMMPS. The potential and kinetic energies of AuNPs on the mica substrate provide sufficient energy to overcome the diffusion barrier of gold atoms. After the cold welding, the regularity of lattice structure is maintained since the rotation of AuNPs is allowed due to the presence of mica substrate. It turns out that the growth of AuNPs can be controlled arbitrarily and the welded region is nearly perfect and provides the same crystal orientation and strength as the rest of the nanostructures. PMID:27597438

  13. Self-stabilization of high-frequency oscillations in semiconductor superlattices by time-delay autosynchronization.

    Science.gov (United States)

    Schlesner, J; Amann, A; Janson, N B; Just, W; Schöll, E

    2003-12-01

    We present a scheme to stabilize high-frequency domain oscillations in semiconductor superlattices by a time-delayed feedback loop. Applying concepts from chaos control theory we propose to control the spatiotemporal dynamics of fronts of accumulation and depletion layers which are generated at the emitter and may collide and annihilate during their transit, and thereby suppress chaos. The proposed method only requires the feedback of internal global electrical variables, viz., current and voltage, which makes the practical implementation very easy.

  14. Self-Tuning Insulin Adjustment Algorithm for Type 1 Diabetic Patients based on Multi-Doses Regime

    Directory of Open Access Journals (Sweden)

    D. U. Campos-Delgado

    2005-01-01

    Full Text Available A self-tuning algorithm is presented for on-line insulin dosage adjustment in type 1 diabetic patients (chronic stage. The algorithm suggested does not need information of the patient insulin–glucose dynamics (model-free. Three doses are programmed daily, where a combination of two types of insulin: rapid/short and intermediate/long acting is injected into the patient through a subcutaneous route. The doses adaptation is performed by reducing the error in the blood glucose level from euglycemics. In this way, a total of five doses are tuned per day: three rapid/short and two intermediate/long, where there is large penalty to avoid hypoglycemic scenarios. Closed-loop simulation results are illustrated using a detailed nonlinear model of the subcutaneous insulin–glucose dynamics in a type 1 diabetic patient with meal intake.

  15. Self-worth and psychological adjustment of obese children: An analysis through the Draw-A-Person

    Science.gov (United States)

    Scimeca, Giuseppe; Alborghetti, Amelia; Bruno, Antonio; Troili, Giulia Maria; Pandolfo, Gianluca; Muscatello, Maria Rosaria Anna; Zoccali, Rocco Antonio

    2016-01-01

    AIM To investigate psychopathological correlates of child obesity via the Draw-A-Person test (DAP). METHODS The participants were 50 children with a mean age of 9.74 years. Body mass index (BMI) was used as a measure of body fat. Children were divided into normal (n = 17), overweight (n = 14) and obese (n = 19). Two qualitative methods of scoring the DAP based on an integrative approach were used to assess self-concept (ESW) and overall level of children’s adjustment (EAC). A procedure for judging interpretative skills of clinicians was implemented before they evaluated children’s drawings. RESULTS As predicted by our hypothesis, BMI was negatively correlated with ESW, r (50) = -0.29, P children. CONCLUSION It was concluded that there is a negative bias toward females that reveals how the stigma of obesity is widespread in Western society. PMID:27679772

  16. Positive effect of increasing feedback for student self-adjustment of learning habits

    Directory of Open Access Journals (Sweden)

    Ramon Vilanova Arbos

    2011-02-01

    Full Text Available Universities are currently undergoing a significant amount of changes of a conceptual and methodological nature, in compliance with the European Higher Education Area (EHEA. This new scenario promotes new learning and teaching methodologies under specific criteria. In a global sense it can be stated that the main outcome of this new approach is the increased level of feedback required amongst the principal actors in question throughout the learning process (e.g. lecturer and students. In this article we present a scheme in which the organization of the lecture activities (teaching, evaluation, assessment, etc are organized according to a timeline that respects the overall aim of increasing the amount of feedback a given student receives. Although it may be widely recognized that on-going evaluation constitutes a positive framework that can enhance student performance, this study demonstrates that if all the activities are designed as a whole, the self-feedback of the student is increased and the overall performance improved. The teaching of the subject of “Signals and Systems”; a component of the Computer Science Engineering degree, is used as a case study for this experience. It has been used as a framework and the improvements developed with respect to previous years achieved have been demonstrated with data.

  17. A Model of Appropriate Self-Adjustment of Farmers who Grow Para Rubber (Hevea brasiliensis in Northeast Thailand

    Directory of Open Access Journals (Sweden)

    Montri Srirajlao

    2010-01-01

    Full Text Available Problem statement: Para Rubber was an economic wood growing in Northeast Thailand playing economic and social role. The objectives of this research were to study: (1 the economic, social and cultural lifestyle and (2 the appropriate adjustment model of agriculturists or farmers growing Para Rubber in Northeast Thailand. Approach: The research area covered 6 provinces: Mahasarakam, Roi-ed, Khon Kaen, Nongkai, Udontani and Loei. The samples were selected by Purposive Sampling including: 90 experts, 60 practitioners and 60 general people. The instruments using for collecting data were: (1 The Interview Form, (2 The Observation Form, (3 Focus Group Discussion and (4 Workshop, investigated by Triangulation. Data were analyzed according to the specified objectives and presented in descriptive analysis. Results: The farmers' lifestyle in traditional period of Northeast Thailand was to earn their living from producing by themselves and sharing resources with each other including: rice farming, farm rice growing, vegetable garden growing, searching for natural food without cost wasting one's capital. When it was period of changing, the price of traditional industrial crop was lowered, the agriculturists began to grow Para Rubber instead since the promotion of governmental industrial section. For the economic, social and cultural changes, found that the agriculturists growing Para Rubber Plantation, had more revenue. But, the mechanism of market price and selling had stability was attached with political situation. For the pattern of adjustment of the agriculturists growing Para Rubber Plantation in Northeast Thailand, found that there was an adjustment in individual level for developing their self study by applying body of knowledge learned by experience of successful people by being employed in cutting Para Rubber in The Southern of Thailand as well as the academic support and selling to serve the need of farmers. Conclusion/Recommendations: Para Rubber

  18. Shame and Guilt: Relationships of Test of Self-Conscious Affect Measures With Psychological Adjustment and Gender Differences in Iran

    Directory of Open Access Journals (Sweden)

    Nima Ghorbani

    2013-06-01

    Full Text Available In numerous studies conducted in Western societies, shame as measured by the Test of Self-Conscious Affect (TOSCA has correlated with maladjustment whereas the TOSCA Guilt Scale has predicted adjustment. The present investigation sought to determine if such linkages would also appear in the Muslim cultural context of Iran. Iranian university students (N = 132 responded to Shame and Guilt Scales from the third version of the TOSCA, along with an array of personality measures. Shame correlated negatively with adjustment and positively with maladjustment. Guilt displayed an opposite pattern of relationships. As in previous Western investigations, women scored higher than men on guilt, but the expected female elevation in shame failed to appear. Shame, nevertheless, interacted with gender to predict relationships with poorer psychological functioning in women, but not in men. These data most importantly confirmed that the TOSCA Shame and Guilt Scales in Iran display implications similar to those observed in the West and that gender differences in Iran may deserve additional research attention.

  19. Spectral analysis and self-adjusting mechanism for oscillation phenomenon in hydrogen-oxygen continuously rotating detonation engine

    Directory of Open Access Journals (Sweden)

    Liu Yusi

    2015-06-01

    Full Text Available The continuously rotating detonation engine (CRDE is a new concept of engines for aircraft and spacecraft. Quasi-stable continuously rotating detonation (CRD can be observed in an annular combustion chamber, but the sustaining, stabilizing and adjusting mechanisms are not yet clear. To learn more deeply into the CRDE, experimental studies have been carried out to investigate hydrogen-oxygen CRDE. Pressure histories are obtained during each shot, which show that stable CRD waves are generated in the combustor, when feeding pressures are higher than 0.5 MPa for fuel and oxidizer, respectively. Each shot can keep running as long as fresh gas feeding maintains. Close-up of the pressure history shows the repeatability of pressure peaks and indicates the detonation velocity in hydrogen–oxygen CRD, which proves the success of forming a stable CRD in the annular chamber. Spectrum of the pressure history matches the close-up analysis and confirms the CRD. It also shows multi-wave phenomenon and affirms the fact that in this case a single detonation wave is rotating in the annulus. Moreover, oscillation phenomenon is found in pressure peaks and a self-adjusting mechanism is proposed to explain the phenomenon.

  20. Discrepancies Between Youth and Mothers’ Perceptions of Their Mother–Child Relationship Quality and Self-Disclosure: Implications for Youth- and Mother-Reported Youth Adjustment

    Science.gov (United States)

    Swenson, Lance P.

    2012-01-01

    Recently, researchers have devoted greater attention to understanding how disagreement between mothers and their children regarding parent–child relationship quality and functioning impacts youth adjustment. While some view discrepancies as indices of developmentally appropriate individuation, discrepancies regarding family functioning also have been found to predict problematic youth functioning. This study examined the effects of mother–child discrepancies for mother–child relationship qualities and youth self-disclosure on youth-and mother-reported youth internalizing and externalizing adjustment. 232 fifth, eighth, and 11th grade youth (55 % female) and their mothers completed measures of mother–child relationship quality, youth self-disclosure, and youth internalizing and externalizing adjustment. For internalizing adjustment, few effects of discrepancy on adjustment were evident. Instead, informant-specific perceptions of mother–child relationship functioning were most relevant for informant-specific reports of youth adjustment. For youth externalizing adjustment, the magnitude of mother–child discrepancies for negative relationship quality and for youth self-disclosure predicted lower levels of problematic externalizing behavior from both the children’s and the mothers’ perspectives, which could indicate a lack of parent–child communication. Future research is needed to fully understand how discrepancies in negative or mal-adaptive aspects of mother–child relationships are formed (e.g., low disclosure), are understood by the members of and contribute to the onset, maintenance, and treatment of problematic behavioral outcomes. PMID:22573279

  1. Friends’ Knowledge of Youth Internalizing and Externalizing Adjustment: Accuracy, Bias, and the Influences of Gender, Grade, Positive Friendship Quality, and Self-Disclosure

    Science.gov (United States)

    Rose, Amanda J.

    2012-01-01

    Some evidence suggests that close friends may be knowledgeable of youth’s psychological adjustment. However, friends are understudied as reporters of adjustment. The current study examines associations between self- and friend-reports of internalizing and externalizing adjustment in a community sample of fifth-, eighth-, and eleventh-grade youth. The study extends prior work by considering the degree to which friends’ reports of youth adjustment are accurate (i.e., predicted by youths’ actual adjustment) versus biased (i.e., predicted by the friend reporters’ own adjustment). Findings indicated stronger bias effects than accuracy effects, but the accuracy effects were significant for both internalizing and externalizing adjustment. Additionally, friends who perceived their relationships as high in positive quality, friends in relationships high in disclosure, and girls perceived youths’ internalizing symptoms most accurately. Knowledge of externalizing adjustment was not influenced by gender, grade, relationship quality, or self-disclosure. Findings suggest that friends could play an important role in prevention efforts. PMID:19377867

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

    Directory of Open Access Journals (Sweden)

    Kobra Dadarigashti

    2016-12-01

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

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

    Directory of Open Access Journals (Sweden)

    Kobra Dadarigashti

    2016-07-01

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

  4. An unusual delayed complication of paraffin self-injection for penile girth augmentation.

    Science.gov (United States)

    De Siati, Mario; Selvaggio, Oscar; Di Fino, Giuseppe; Liuzzi, Giuseppe; Massenio, Paolo; Sanguedolce, Francesca; Carrieri, Giuseppe; Cormio, Luigi

    2013-12-01

    Penile self-injection of various oils is still carried out among Eastern Europe people for penile girth augmentation despite the potential destructive complications of this practice are well known. Penile reactions to such foreign bodies include scarring, abscess formation, ulceration, and even Fournier's gangrene; voiding problems due to mineral oil self-injection have been reported only once. To our knowledge, we describe the first case of paraffin self-injection for penile girth augmentation presenting with acute urinary retention. A 27-year-old Romanian man presented with severe penile pain and acute urinary retention five years after having practiced repeated penile self-injections of paraffin for penile girth augmentation. The penile shaft was massively enlarged, fibrotic and phymotic; urethral catheterization failed due to severe stricture of the proximal pendulum urethra. The patients refused placement of a suprapubic catheter and underwent immediate penile surgical exploration. The scarred tissue between dartos and Buck's fascia and a fibrotic ring occluding the urethra were removed and the penile skin reconstructed. Pathology confirmed the diagnosis of paraffinoma. The patient resumed normal voiding immediately after catheter removal on second postoperative day; he was very pleased with cosmetic, sexual and voiding results at six weeks, six months and 1 year follow-up. The present report describes a novel complication of penile self-injection for penile girth augmentation. Because of the increasing number of patients seeking penile augmentation, physicians dealing with sexual medicine should pay more attention to such request to prevent the use of non medical treatments that can turn into medical disasters.

  5. Practical time-delay synchronization of a periodically modulated self-excited oscillators with uncertainties.

    Science.gov (United States)

    Kakmeni, F M Moukam; Bowong, S; Senthikumar, D V; Kurths, J

    2010-12-01

    This paper studies time-delay synchronization of a periodically modulated Duffing Van der Pol (DVP) oscillator subjected to uncertainties with emphasis on complete synchronization. A robust adaptive response system is designed to synchronize with the uncertain drive periodically modulated DVP oscillator. Adaptation laws on the upper bounds of uncertainties are proposed to guarantee the boundedness of both the synchronization error and the estimated feedback coupling gains. Numerical results are presented to check the effectiveness of the proposed synchronization scheme. The results suggest that the linear and nonlinear terms in the feedback coupling play a complementary role in increasing the synchronization regime in the parameter space of the synchronization manifold. The proposed method can be successfully applied to a large variety of physical systems.

  6. A recirculating delayed self-heterodyne method using a Mach-Zehnder modulator for kHz-linewidth measurement

    Science.gov (United States)

    Deng, Shuo; Li, Min; Gao, Hongyun; Dai, Yawen

    2016-09-01

    A laser linewidth measurement method which uses a Mach-Zehnder electro-optic modulator (MZM) is proposed in a loss-compensated recirculating delayed self-heterodyne interferometer (LC-RDSHI). Compared with the traditional acousto-optic modulator (AOM), the electro-optic modulator has the merits of broader bandwidth, lower insertion loss, higher extinction ratio and thus, a wider application. A theoretical analysis shows that the power spectrum curve of the novel measurement system is a Lorentzian line, which fits well with experiment. The linewidth is measured to be 137 ± 7 kHz at a frequency shift of 4 GHz. Measurement of a distributed feedback Bragg (DFB) laser has manifested that the linewidth broadens from 98.5 kHz to 137.4 kHz as the operating temperature changes by 16 °C. This work will allow investigation of narrow linewidth semiconductor and fiber laser stability.

  7. A comparison of delayed self-heterodyne interference measurement of laser linewidth using Mach-Zehnder and Michelson interferometers.

    Science.gov (United States)

    Canagasabey, Albert; Michie, Andrew; Canning, John; Holdsworth, John; Fleming, Simon; Wang, Hsiao-Chuan; Aslund, Mattias L

    2011-01-01

    Linewidth measurements of a distributed feedback (DFB) fibre laser are made using delayed self heterodyne interferometry (DHSI) with both Mach-Zehnder and Michelson interferometer configurations. Voigt fitting is used to extract and compare the Lorentzian and Gaussian linewidths and associated sources of noise. The respective measurements are w(L) (MZI) = (1.6 ± 0.2) kHz and w(L) (MI) = (1.4 ± 0.1) kHz. The Michelson with Faraday rotator mirrors gives a slightly narrower linewidth with significantly reduced error. This is explained by the unscrambling of polarisation drift using the Faraday rotator mirrors, confirmed by comparing with non-rotating standard gold coated fibre end mirrors.

  8. A Comparison of Delayed Self-Heterodyne Interference Measurement of Laser Linewidth Using Mach-Zehnder and Michelson Interferometers

    Directory of Open Access Journals (Sweden)

    Simon Fleming

    2011-09-01

    Full Text Available Linewidth measurements of a distributed feedback (DFB fibre laser are made using delayed self heterodyne interferometry (DHSI with both Mach-Zehnder and Michelson interferometer configurations. Voigt fitting is used to extract and compare the Lorentzian and Gaussian linewidths and associated sources of noise. The respective measurements are wL (MZI = (1.6 ± 0.2 kHz and wL (MI = (1.4 ± 0.1 kHz. The Michelson with Faraday rotator mirrors gives a slightly narrower linewidth with significantly reduced error. This is explained by the unscrambling of polarisation drift using the Faraday rotator mirrors, confirmed by comparing with non-rotating standard gold coated fibre end mirrors.

  9. Area, Delay and Power Analysis of Built in Self Repair Using 2-D Redundancy

    Directory of Open Access Journals (Sweden)

    Aman Kumar Sabnani

    2015-09-01

    Full Text Available System on Chip comprises of programmable processor, different controller and memory. As chip size is decreasing memory density is increasing. These high density memories are susceptible to faults. To increase the yield and make device reliable, testing and self-repair are the important issues. To repair embedded memories in SOC, Built in self-repair techniques are used by firstly detecting, then locating and in the end repairing the memory. In this paper six BISR are designed using six different March algorithms as MBIST then compared altogether. Since power dissipation during testing operation is around twice the power dissipation during normal operational mode, thus low power BISR design is necessary considering the power constraints these days. Due to high switching activity chip can get overheated resulting in malfunction and damage. Power consumption is reduced by reducing the switching activity in the address line when writing and reading the memory during test.

  10. Are Prevalent Self-reported Cardiovascular Disorders Associated with Delayed Recovery From Whiplash-associated Disorders

    DEFF Research Database (Denmark)

    Palmlöf, Lina; Côté, Pierre; Holm, Lena W;

    2015-01-01

    OBJECTIVES:: The aim of this cohort study was to investigate the association between self-reported cardiovascular disorders (CVD) and recovery from whiplash associated disorder (WAD) after a traffic collision. METHODS:: This study was based on the Saskatchewan Government Insurance cohort, including...... individuals over 18 years of age, who made a traffic- injury claim or received health care after a traffic injury, between 1997 and 1999. Participants completed a baseline questionnaire and were followed up by telephone interviews at 6 weeks, 3 months, 6 months, 9 months, and 12 months post injury. Our sample...... on the recovery of individuals with whiplash-associated disorders....

  11. Treatment with a non-toxic, self-replicating anti-prion delays or prevents prion disease in vivo.

    Science.gov (United States)

    Diaz-Espinoza, R; Morales, R; Concha-Marambio, L; Moreno-Gonzalez, I; Moda, F; Soto, C

    2017-06-20

    Transmissible spongiform encephalopathies (TSEs) are fatal neurological disorders caused by prions, which are composed of a misfolded protein (PrP(Sc)) that self-propagates in the brain of infected individuals by converting the normal prion protein (PrP(C)) into the pathological isoform. Here, we report a novel experimental strategy for preventing prion disease based on producing a self-replicating, but innocuous PrP(Sc)-like form, termed anti-prion, which can compete with the replication of pathogenic prions. Our results show that a prophylactic inoculation of prion-infected animals with an anti-prion delays the onset of the disease and in some animals completely prevents the development of clinical symptoms and brain damage. The data indicate that a single injection of the anti-prion eliminated ~99% of the infectivity associated to pathogenic prions. Furthermore, this treatment caused significant changes in the profile of regional PrP(Sc) deposition in the brains of animals that were treated, but still succumbed to the disease. Our findings provide new insights for a mechanistic understanding of prion replication and support the concept that prion replication can be separated from toxicity, providing a novel target for therapeutic intervention.Molecular Psychiatry advance online publication, 20 June 2017; doi:10.1038/mp.2017.84.

  12. Efficacy of Two Irrigants Used with Self-Adjusting File System on Smear Layer: A Scanning Electron Microscopy Study.

    Science.gov (United States)

    Genç Şen, Özgür; Kaya, Sadullah; Er, Özgür; Alaçam, Tayfun

    2014-01-01

    Mechanical instrumentation of root canals produces a smear layer that adversely affects the root canal seal. The aim of this study was to evaluate efficacy of MTAD and citric acid solutions used with self-adjusting file (SAF) system on smear layer. Twenty-three single-rooted human teeth were used for the study. Canals were instrumented manually up to a number 20 K file size. SAF was used to prepare the root canals. The following groups were studied: Group 1: MTAD + 5.25% NaOCl, Group 2: 20% citric acid + 5.25% NaOCl, and Group 3: Control (5.25% NaOCl). All roots were split longitudinally and subjected to scanning electron microscopy. The presence of smear layer in the coronal, middle, and apical thirds was evaluated using a five-score evaluation system. Kruskal-Wallis and Mann-Whitney U tests were used for statistical analysis. In the coronal third, Group 2 exhibited the best results and was statistically different froms the other groups (P 0.05). The solutions used in Group 1 and 2 could effectively remove smear layer in most of the specimens. However, citric acid was more effective than MTAD in the three thirds of the canal.

  13. Water-conducting Characteristics and Micro-dynamic Self-adjusting Behavior of Polyacrylamide/Montmorillonite Coating

    Institute of Scientific and Technical Information of China (English)

    DU Hongmei; ZHANG Zengzhi; WU Miaomiao; ZHAO Jin

    2015-01-01

    A water-conducting polyacrylamide/montmorillonite coating was prepared by solution-blending. The coating was coated on fiber and then composited with polymer to form a composite film material that used for water saving and tree planting in arid and desert regions. The coating’s water-conducting characteristics and dynamic self-adjusting behavior were investigated by Fourier transform infrared (FTIR) spectroscopy, thermal analysis (TG-DTA), and environmental scanning electron microscopy (ESEM).The results showed that the coating’s water-conducting rate increased but water-retention capacity weakened with increasing montmorillonite content. The water-loss rate was positively related to temperature and negatively related to soil moisture. Water potential greatly influenced the water-conducting rate of the coating during its water conduction process. When the coating was at a low water potential, the montmorillonite particles interconnected and water was conducted quickly via montmorillonite layers, whereas when the coating was at a high potential, the montmorillonite particles disconnected and water was conducted slowly via the swelled polyacrylamide net structure. The rate can be regulated by changing the proportion of polyacrylamide and montmorillonite to guarantee a reasonable water supply for trees and make trees easier to survive. Thus, the survival rate of trees can be increased and the use of water resources can be signiifcantly reduced.

  14. Testing the Short and Screener versions of the Social Adjustment Scale-Self-report (SAS-SR).

    Science.gov (United States)

    Gameroff, Marc J; Wickramaratne, Priya; Weissman, Myrna M

    2012-03-01

    The 54-item Social Adjustment Scale-Self-report (SAS-SR) is a measure of social functioning used in research studies and clinical practice. Two shortened versions were recently developed: the 24-item SAS-SR: Short and the 14-item SAS-SR: Screener. We briefly describe the development of the shortened scales and then assess their reliability and validity in comparison to the full SAS-SR in new analyses from two separate samples of convenience from a family study and from a primary care clinic. Compared to the full SAS-SR, the shortened scales performed well, exhibiting high correlations with full SAS-SR scores (r values between 0.81 and 0.95); significant correlations with health-related quality of life as measured by the Short Form 36 Health Survey; the ability to distinguish subjects with major depression versus other psychiatric disorders versus no mental disorders; and sensitivity to change in clinical status as measured longitudinally with the Symptom Checklist-90 and Global Assessment Scale. The SAS-SR: Short and SAS-SR: Screener retained the areas assessed by the full SAS-SR with fewer items in each area, and appear to be promising replacements for the full scale when a shorter administration time is desired and detailed information on performance in different areas is not required. Further work is needed to test the validity of the shortened measures.

  15. Psychological Adjustment and Levels of Self Esteem in Children with Visual-Motor Integration Difficulties Influences the Results of a Randomized Intervention Trial

    Science.gov (United States)

    Lahav, Orit; Apter, Alan; Ratzon, Navah Z.

    2013-01-01

    This study evaluates how much the effects of intervention programs are influenced by pre-existing psychological adjustment and self-esteem levels in kindergarten and first grade children with poor visual-motor integration skills, from low socioeconomic backgrounds. One hundred and sixteen mainstream kindergarten and first-grade children, from low…

  16. Psychological Adjustment and Levels of Self Esteem in Children with Visual-Motor Integration Difficulties Influences the Results of a Randomized Intervention Trial

    Science.gov (United States)

    Lahav, Orit; Apter, Alan; Ratzon, Navah Z.

    2013-01-01

    This study evaluates how much the effects of intervention programs are influenced by pre-existing psychological adjustment and self-esteem levels in kindergarten and first grade children with poor visual-motor integration skills, from low socioeconomic backgrounds. One hundred and sixteen mainstream kindergarten and first-grade children, from low…

  17. Two Are Better than One: The Joint Influence of Maternal Preparedness for Parenting and Children's Self-Esteem on Academic Achievement and Adjustment

    Science.gov (United States)

    Farris, Jaelyn; Burke Lefever, Jennifer E.; Borkowski, John G.; Whitman, Thomas L.

    2013-01-01

    Research Findings: This study investigated the joint influence of maternal cognitive readiness to parent and children's self-esteem on children's academic achievement and behavioral adjustment in the classroom at age 10. Participants were 153 adolescent mothers and their firstborn children. Findings indicated that low levels of prenatal maternal…

  18. The impact of pain on psychological well-being in rheumatoid arthritis : the mediating effects of self-esteem and adjustment to disease

    NARCIS (Netherlands)

    Nagyova, I.; Stewart, R.E.; Macejova, Z.; van Dijk, J.P.; van den Heuvel, W.J.

    2005-01-01

    The aim of this study was to determine whether self-esteem and adjustment to disease can mediate the association between pain and psychological well-being in patients with Rheumatoid Arthritis (RA). Coefficients of correlation, multiple linear regressions and Structural Equation Model (SEM) were emp

  19. The impact of pain on psychological well-being in rheumatoid arthritis: the mediating effects of self-esteem and adjustment to disease

    NARCIS (Netherlands)

    Nagyova, I.; Stewart, R.E; Macejova, Z.; van Dijk, J.P.; van den Heuvel, W.J.A.

    2005-01-01

    The aim of this study was to determine whether self-esteem and adjustment to disease can mediate the association between pain and psychological well-being in patients with Rheumatoid Arthritis (RA). Coefficients of correlation, multiple linear regressions and Structural Equation Model (SEM) were emp

  20. BREATH: Web-Based Self-Management for Psychological Adjustment After Primary Breast Cancer--Results of a Multicenter Randomized Controlled Trial

    NARCIS (Netherlands)

    Berg, S.W. van den; Gielissen, M.F.M.; Custers, J.A.E.; Graaf, W.T.A. van der; Ottevanger, P.B.; Prins, J.B.

    2015-01-01

    PURPOSE: Early breast cancer survivors (BCSs) report high unmet care needs, and easily accessible care is not routinely available for this growing population. The Breast Cancer E-Health (BREATH) trial is a Web-based self-management intervention to support the psychological adjustment of women after

  1. Psychological adjustment and levels of self esteem in children with visual-motor integration difficulties influences the results of a randomized intervention trial.

    Science.gov (United States)

    Lahav, Orit; Apter, Alan; Ratzon, Navah Z

    2013-01-01

    This study evaluates how much the effects of intervention programs are influenced by pre-existing psychological adjustment and self-esteem levels in kindergarten and first grade children with poor visual-motor integration skills, from low socioeconomic backgrounds. One hundred and sixteen mainstream kindergarten and first-grade children, from low socioeconomic backgrounds, scoring below the 25th percentile on a measure of visual-motor integration (VMI) were recruited and randomly divided into two parallel intervention groups. One intervention group received directive visual-motor intervention (DVMI), while the second intervention group received a non-directive supportive intervention (NDSI). Tests were administered to evaluate visual-motor integration skills outcome. Children with higher baseline measures of psychological adjustment and self-esteem responded better in NDSI while children with lower baseline performance on psychological adjustment and self-esteem responded better in DVMI. This study suggests that children from low socioeconomic backgrounds with low VMI performance scores will benefit more from intervention programs if clinicians choose the type of intervention according to baseline psychological adjustment and self-esteem measures.

  2. Two Are Better than One: The Joint Influence of Maternal Preparedness for Parenting and Children's Self-Esteem on Academic Achievement and Adjustment

    Science.gov (United States)

    Farris, Jaelyn; Burke Lefever, Jennifer E.; Borkowski, John G.; Whitman, Thomas L.

    2013-01-01

    Research Findings: This study investigated the joint influence of maternal cognitive readiness to parent and children's self-esteem on children's academic achievement and behavioral adjustment in the classroom at age 10. Participants were 153 adolescent mothers and their firstborn children. Findings indicated that low levels of prenatal maternal…

  3. The correlation between ostomy knowledge and self-care ability with psychosocial adjustment in Chinese patients with a permanent colostomy: a descriptive study .

    Science.gov (United States)

    Cheng, Fang; Meng, Ai-feng; Yang, Li-Fang; Zhang, Yi-nan

    2013-07-01

    A colostomy can have a negative impact on patient quality of life. Research suggests that psychosocial adaptation is positively associated with quality of life, but few reports address this adaptation and its related factors in patients with a permanent colostomy. A 4-month, descriptive study was conducted to assess the impact of ostomy knowledge and ability to self-care on the psychosocial adjustment of 54 Chinese outpatients (47 men, 14 participants 40 to 50 years old, 40 participants 50 to 70 years old) with a permanent colostomy to investigate the correlation between stoma knowledge, self-care ability, and psychosocial adjustment. Assessment instruments included a sociodemographic data questionnaire and a Chinese translation of the Ostomy Adjustment Inventory-23 that comprises 20 items in three domains (positive emotions, negative emotions, and social life). Participants rated statements on a scale from 0 (totally disagree) to 4 (totally agree); a score of 40 indicates a low level of psychosocial adjustment. Participants also completed the Stoma-related Knowledge Scale, comprising 14 5-point Likert scale questions where low scores indicate low knowledge, and they answered one question regarding self-care ability. Data were analyzed using statistical software for social science. The average stoma-related knowledge score suggested moderate levels of knowledge (45.112 ± 13.358). Twenty (20) participants managed all stoma care aspects independently, 30 required some assistance, and four (4) required care by someone else. The three domains of psychosocial adjustment scores (positive emotions, negative emotions, and social life) were 17.60 ± 4.093,12.92 ± 3.440, and 19.15 ± 6.316, respectively. Knowledge and the three domains of psychosocial adjustment were positively correlated with positive emotion (r = .610, P = 0.001), negative emotion (r = .696, P = 0.000), and social life adjustment (r = .617, P = 0.001). A significant difference in psychosocial adjustment

  4. Characteristics of time-delay complex Lorenz chaotic system and its self-synchronization of time delay%时滞复Lorenz混沌系统特性及其自时滞同步

    Institute of Scientific and Technical Information of China (English)

    张芳芳; 刘树堂; 余卫勇

    2013-01-01

    Self-synchronization of time delay implies that the synchronization between the time-delay system and the original system keeps the structure and parameters of systems unchanged, thus these various problems produced by time-delay in practice are avoided. Taking a time-delay complex Lorenz system for example, we investigate its dynamic characteristics and the influence of of time lag factor. A nonlinear feedback controller is designed to realize the self-synchronization of time delay of the complex Lorenz system. Numerical simulations verify the effectiveness of the presented controller. The controller adopts some states to realize the synchronization of all states. It is simple in principle and easy to implement in engineering.%自时滞同步是指保持混沌系统结构和参数不变的情况下,使时滞系统和原系统同步,从而避免了现实中因为时滞而产生的各种问题。本文以时滞复Lorenz系统为例,研究其动态特性及时滞因数的影响,并提出了一种非线性反馈控制器实现了复Lorenz系统的自时滞混沌同步。数值仿真结果验证了该控制器的有效性。该控制器只对部分状态进行控制,实现了所有状态的同步,原理简单,易于工程实现。

  5. Self-Control and Coping Skills as Factors in Pain Perception, Perceived Health and Psychological Adjustment in the Elderly.

    Science.gov (United States)

    Dietrich, Coralie; And Others

    Self-control and self-efficacy have played a central role in recent behavioral medicine work on the control of chronic physical pain. Little work investigating the concepts of self-control and self-efficacy has been done with the elderly in spite of the fact that coping strategies in the elderly have been associated with a variety of health and…

  6. Effectiveness of various irrigation activation protocols and the self-adjusting file system on smear layer and debris removal.

    Science.gov (United States)

    Çapar, İsmail Davut; Aydinbelge, Hale Ari

    2014-01-01

    The purpose of the present study is to evaluate smear layer generation and residual debris after using self-adjusting file (SAF) or rotary instrumentation and to compare the debris and smear layer removal efficacy of the SAF cleaning/shaping irrigation system against final agitation techniques. One hundred and eight maxillary lateral incisor teeth were randomly divided into nine experimental groups (n = 12), and root canals were prepared using ProTaper Universal rotary files, with the exception of the SAF instrumentation group. During instrumentation, root canals were irrigated with a total of 16 mL of 5% NaOCl. For final irrigation, rotary-instrumented groups were irrigated with 10 mL of 17% EDTA and 10 mL of 5% NaOCl using different irrigation agitation regimens (syringe irrigation with needles, NaviTip FX, manual dynamic irrigation, CanalBrush, EndoActivator, EndoVac, passive ultrasonic irrigation (PUI), and SAF irrigation). In the SAF instrumentation group, root canals were instrumented for 4 min at a rate of 4 mL/min with 5% NaOCl and received a final flush with same as syringe irrigation with needles. The surface of the root dentin was observed using a scanning electron microscope. The SAF instrumentation group generated less smear layer and yielded cleaner canals compared to rotary instrumentation. The EndoActivator, EndoVac, PUI, and SAF irrigation groups increased the efficacy of irrigating solutions on the smear layer and debris removal. The SAF instrumentation yielded cleaner canal walls when compared to rotary instrumentation. None of the techniques completely removed the smear layer from the root canal walls.

  7. The efficacy of the self-adjusting file and ProTaper for removal of calcium hydroxide from root canals

    Directory of Open Access Journals (Sweden)

    Gisele Faria

    2013-07-01

    Full Text Available OBJECTIVE: The goal of this study was to evaluate the efficacy of the Self-Adjusting File (SAF and ProTaper for removing calcium hydroxide [Ca(OH2] from root canals. MATERIAL AND METHODS: Thirty-six human mandibular incisors were instrumented with the ProTaper system up to instrument F2 and filled with a Ca(OH2-based dressing. After 7 days, specimens were distributed in two groups (n=15 according to the method of Ca(OH2 removal. Group I (SAF was irrigated with 5 mL of NaOCl and SAF was used for 30 seconds under constant irrigation with 5 mL of NaOCl using the Vatea irrigation device, followed by irrigation with 3 mL of EDTA and 5 mL of NaOCl. Group II (ProTaper was irrigated with 5 mL of NaOCl, the F2 instrument was used for 30 seconds, followed by irrigation with 5 mL of NaOCl, 3 mL of EDTA, and 5 mL of NaOCl. In 3 teeth Ca(OH2 was not removed (positive control and in 3 teeth canals were not filled with Ca(OH2 (negative control. Teeth were sectioned and prepared for the scanning electron microscopy. The amounts of residual Ca(OH2 were evaluated in the middle and apical thirds using a 5-score system. RESULTS: None of the techniques completely removed the Ca(OH2 dressing. No difference was observed between SAF and ProTaper in removing Ca(OH2 in the middle (P=0.11 and the apical (P=0.23 thirds. CONCLUSION: The SAF system showed similar efficacy to rotary instrument for removal of Ca(OH2 from mandibular incisor root canals.

  8. Impact of communication delays to and from the International Space Station on self-reported individual and team behavior and performance: A mixed-methods study

    Science.gov (United States)

    Kintz, Natalie M.; Chou, Chih-Ping; Vessey, William B.; Leveton, Lauren B.; Palinkas, Lawrence A.

    2016-12-01

    Deep space explorations will involve significant delays in communication to and from Earth that will likely impact individual and team outcomes. However, the extent of these impacts and the appropriate countermeasures for their mitigation remain largely unknown. This study utilized the International Space Station (ISS), a high-fidelity analog for deep space, as a research platform to assess the impact of communication delays on individual and team performance, mood, and behavior. Three astronauts on the ISS and 18 mission support personnel performed tasks with and without communication delays (50-s one-way) during a mission lasting 166 days. Self-reported assessments of individual and team performance and mood were obtained after each task. Secondary outcomes included communication quality and task autonomy. Qualitative data from post-mission interviews with astronauts were used to validate and expand on quantitative data, and to elicit recommendations for countermeasures. Crew well-being and communication quality were significantly reduced in communication delay tasks compared to control. Communication delays were also significantly associated with increased individual stress/frustration. Qualitative data suggest communication delays impacted operational outcomes (i.e. task efficiency), teamwork processes (i.e. team/task coordination) and mood (i.e. stress/frustration), particularly when tasks involved high task-related communication demands, either because of poor communication strategies or low crew autonomy. Training, teamwork, and technology-focused countermeasures were identified to mitigate or prevent adverse impacts.

  9. Analysis of the Ignition Delay Effects on Monopropellant Self-Excited Pulse Thruster%点火延迟对单组元自激式脉冲推力器的性能影响

    Institute of Scientific and Technical Information of China (English)

    邵永勇; 覃粒子; 刘兵; 玉龙

    2013-01-01

    The ignition delay is an important factor which needs to be considered carefully in the pulse thruster design.To investigate the effects of ignition delay on the self-excited pulse thruster,a mathematical model was set up to describe the pulsating process adopting HAN (Hydroxylammonium Nitrate)-based mon opropellant.The impact on the pressure,mass flow,thrust and specific impulse of the thruster was analyzed when the ignition delay was changed.For the self-excited thruster,the ignition delay strengthens the extru sion,injection and combustion process.With the delay increasing,the duration of the combustion in a cycle and the whole cycle period become much shorter,and the magnitude of the pressure peak both in the extru sion room and in the combustion chamber ascend obviously at the same time.Few influence of the delay on the average specific impulse in a cycle period is observed though the longer delay would result in the higher average thrust.The ignition delay may be a possible approach to adjust the pulsating characteristics of the self-excited pulse thruster.Thus,the relative study is important to explore and apply this novel rocket en gine.%点火延迟是脉冲推力器设计中需要考虑的重要因素之一.为研究点火延迟对自激式脉冲推力器的性能影响,以HAN基(Hydroxylammonium Nitrate)单组元推进剂为例,建立自激式脉冲推力器工作过程的仿真模型,分析了点火延迟时间的变化对推力器的压强、流量、推力及平均比冲的影响规律.结果表明,点火延迟会强化脉冲推力器的压强爬升过程,随着点火延迟时间的增大,一个脉冲循环中的推进剂燃烧持续时间和整个脉冲周期均会明显缩短,同时挤压腔压强峰值和燃烧室压强峰值以及推力器的平均推力水平也会显著升高,但点火延迟的变化基本不会影响脉冲周期内的平均比冲.点火延迟提供了一条调节脉冲工作特性的可能途径,研究点火延迟特性对自

  10. The impact of training problem-solving skills on self-esteem and behavioral adjustment in teenage girls who have irresponsible parents or no parents

    OpenAIRE

    Shahgholy Ghahfarokhi, F; Moradi, N; Alborzkouh, P; Radmehr, S; Zainali, M

    2015-01-01

    Proper psychological interventions are of great importance because they help enhancing psychological and public health in adolescents with irresponsible parents or no parents. The current research aimed to examine the impact of training problem-solving experiment on self-esteem and behavioral adjustment in teenage girls with irresponsible parents or no parents. Methodology: The approach of the present research was a semi-test via a post-test-pre-test model and a check team. Hence, in Tehran, ...

  11. The impact of training problem-solving skills on self-esteem and behavioral adjustment in teenage girls who have irresponsible parents or no parents.

    Science.gov (United States)

    Shahgholy Ghahfarokhi, F; Moradi, N; Alborzkouh, P; Radmehr, S; Zainali, M

    2015-01-01

    Proper psychological interventions are of great importance because they help enhancing psychological and public health in adolescents with irresponsible parents or no parents. The current research aimed to examine the impact of training problem-solving experiment on self-esteem and behavioral adjustment in teenage girls with irresponsible parents or no parents. Methodology: The approach of the present research was a semi-test via a post-test-pre-test model and a check team. Hence, in Tehran, 40 girls with irresponsible parents or no parents were chosen by using the Convenience modeling, and they were classified into 2 teams: control and experiment. Both groups were pre-tested by using a demography questionnaire, Rosenberg's self-esteem scale, and a behavioral adjustment questionnaire. Afterwards, both groups were post-tested, and the obtained data were examined by using inferential and descriptive methods through SPSS 21. Findings: Findings indicated that the training problem-solving skills significantly increased the self-esteem and the behavioral adjustment in teenage girls with irresponsible parents or no parents (P teenage girls with irresponsible parents or no parents, because these methods are highly efficient especially when they are performed in groups, as they are cheap and accepted by different people.

  12. The impact of training problem-solving skills on self-esteem and behavioral adjustment in teenage girls who have irresponsible parents or no parents

    Science.gov (United States)

    Shahgholy Ghahfarokhi, F; Moradi, N; Alborzkouh, P; Radmehr, S; Zainali, M

    2015-01-01

    Proper psychological interventions are of great importance because they help enhancing psychological and public health in adolescents with irresponsible parents or no parents. The current research aimed to examine the impact of training problem-solving experiment on self-esteem and behavioral adjustment in teenage girls with irresponsible parents or no parents. Methodology: The approach of the present research was a semi-test via a post-test-pre-test model and a check team. Hence, in Tehran, 40 girls with irresponsible parents or no parents were chosen by using the Convenience modeling, and they were classified into 2 teams: control and experiment. Both groups were pre-tested by using a demography questionnaire, Rosenberg’s self-esteem scale, and a behavioral adjustment questionnaire. Afterwards, both groups were post-tested, and the obtained data were examined by using inferential and descriptive methods through SPSS 21. Findings: Findings indicated that the training problem-solving skills significantly increased the self-esteem and the behavioral adjustment in teenage girls with irresponsible parents or no parents (P < 0/ 001). Conclusion: The conclusion of this research was that training problem-solving methods greatly helps endangered people such as teenage girls with irresponsible parents or no parents, because these methods are highly efficient especially when they are performed in groups, as they are cheap and accepted by different people. PMID:28316718

  13. The Effects of School-Based Maum Meditation Program on the Self-Esteem and School Adjustment in Primary School Students

    Science.gov (United States)

    Yoo, Yang Gyeong; Lee, In Soo

    2013-01-01

    Self-esteem and school adjustment of children in the lower grades of primary school, the beginning stage of school life, have a close relationship with development of personality, mental health and characters of children. Therefore, the present study aimed to verify the effect of school-based Maum Meditation program on children in the lower grades of primary school, as a personality education program. The result showed that the experimental group with application of Maum Meditation program had significant improvements in self-esteem and school adjustment, compared to the control group without the application. In conclusion, since the study provides significant evidence that the intervention of Maum Meditation program had positive effects on self-esteem and school adjustment of children in the early stage of primary school, it is suggested to actively employ Maum Meditation as a school-based meditation program for mental health promotion of children in the early school ages, the stage of formation of personalities and habits. PMID:23777717

  14. The effects of school-based Maum meditation program on the self-esteem and school adjustment in primary school students.

    Science.gov (United States)

    Yoo, Yang Gyeong; Lee, In Soo

    2013-03-10

    Self-esteem and school adjustment of children in the lower grades of primary school, the beginning stage of school life, have a close relationship with development of personality, mental health and characters of children. Therefore, the present study aimed to verify the effect of school-based Maum Meditation program on children in the lower grades of primary school, as a personality education program. The result showed that the experimental group with application of Maum Meditation program had significant improvements in self-esteem and school adjustment, compared to the control group without the application. In conclusion, since the study provides significant evidence that the intervention of Maum Meditation program had positive effects on self-esteem and school adjustment of children in the early stage of primary school, it is suggested to actively employ Maum Meditation as a school-based meditation program for mental health promotion of children in the early school ages, the stage of formation of personalities and habits.

  15. In the eyes of older adults: Self-reported age and adjustment in African and European older adults

    Directory of Open Access Journals (Sweden)

    Sofia von Humbold

    2013-09-01

    Full Text Available To explore older adults’ perceptions of subjective age and adjustment to ageing and to analyse the correlational structure of the pre-categories in our study: subjective age, indicators of adjustment to ageing and of personal age perception. An exploratory, descriptive mixed-methods design was utilised. A purposive sampling method was used to select 154 older adults aged between 75 and 99 years from three different nationalities. Semi-structured interviews were performed, addressing two core areas: subjective age and adjustment to ageing. Data was subjected to content analysis. Representation of the correlational structure of the precategories in our study (subjective age and indicators of adjustment to ageing were analysed by a Multiple Correspondence Analysis. Standardised instruments measured regular cognitive abilities. Five categories derived from interviews for subjective age: ‘adapted’, ‘disconnected’, ‘old’, ‘youthful’ and ‘tolerant’. A total of seven categories emerged as indicators of adjustment to ageing: ‘social networking’, ‘health’, ‘time perspective’, ‘spirituality’, ‘financial autonomy’, ‘professional activities’ and ‘fulfilment and leisure’. These results supported a model for each pre-category. Subjective age was explained by a two-factor model: ‘age-conscientious’ and ‘youthful’. A three-dimensional model formed by ‘reconciled’, ‘satisficers’ and ‘maximisers’ was indicated as a best-fit solution for adjustment to ageing. A three-dimensional overall model for PAP was formed by ‘age-cognisant’, ‘fulfilled’ and ‘satisficers’. The findings highlighted the underdeveloped potential of subjective age, adjustment to ageing and a personal age perception overall model for this population. Enhancing subjective age and adjustment to ageing might be an important target to improve older adults’ interventions’ outcomes.

  16. On the validity of self-report assessment of cognitive abilities: Attentional control scale associations with cognitive performance, emotional adjustment, and personality.

    Science.gov (United States)

    Williams, Paula G; Rau, Holly K; Suchy, Yana; Thorgusen, Sommer R; Smith, Timothy W

    2017-05-01

    Individual differences in attentional control involve the ability to voluntarily direct, shift, and sustain attention. In studies of the role of attentional control in emotional adjustment, social relationships, and vulnerability to the effects of stress, self-report questionnaires are commonly used to measure this construct. Yet, convincing evidence of the association between self-report scales and actual cognitive performance has not been demonstrated. Across 2 independent samples, we examined associations between self-reported attentional control (Attentional Control Scale; ACS), self-reported emotional adjustment, Five-Factor Model personality traits (NEO Personality Inventory-Revised) and performance measures of attentional control. Study 1 examined behavioral performance on the Attention Network Test (ANT; Fan, McCandliss, Sommer, Raz, & Posner, 2002) and the Modified Switching Task (MST; Suchy & Kosson, 2006) in a large sample (n = 315) of healthy young adults. Study 2 (n = 78) examined behavioral performance on standardized neuropsychological tests of attention, including Conner's Continuous Performance Test-II and subtests from the Wechsler Adult Intelligence Scales, Third Edition (WAIS-III; Psychological Corporation, 1997) and Delis-Kaplan Executive Function System (D-KEFS; Delis, Kaplan, & Kramer, 2001). Results indicated that the ACS was largely unrelated to behavioral performance measures of attentional control but was significantly associated with emotional adjustment, neuroticism, and conscientiousness. These findings suggest that although self-reported attentional control may be a useful construct, researchers using the ACS should exercise caution in interpreting it as a proxy for actual cognitive ability or performance. (PsycINFO Database Record (c) 2017 APA, all rights reserved).

  17. Peer Victimization in Adolescents With Severe Obesity: The Roles of Self-Worth and Social Support in Associations With Psychosocial Adjustment.

    Science.gov (United States)

    Reiter-Purtill, Jennifer; Gowey, Marissa A; Austin, Heather; Smith, Kevin C; Rofey, Dana L; Jenkins, Todd M; Garland, Beth H; Zeller, Meg H

    2017-04-01

    To examine the associations of peer victimization with internalizing symptoms, externalizing symptoms, social competence, and academic performance in a clinical sample of adolescents with severe obesity, and whether self-worth and social support affect these associations. Multisite cross-sectional data from 139 adolescents before weight loss surgery ( M age = 16.9; 79.9% female, 66.2% White; M Body Mass Index [BMI] = 51.5 kg/m 2 ) and 83 nonsurgical comparisons ( M age = 16.1; 81.9% female, 54.2% White; M BMI = 46.9 kg/m 2 ) were collected using self-reports with standardized measures. As a group, participants did not report high levels of victimization. Self-worth mediated the effects of victimization on a majority of measures of adjustment, and further analyses provided evidence of the buffering effect of social support for some mediational models. Self-worth and social support are important targets for prevention and intervention for both victimization and poor adjustment in adolescent severe obesity.

  18. Anxiety, Psychological Well-Being and Self-Esteem in Spanish Families with Blind Children. A Change in Psychological Adjustment?

    Science.gov (United States)

    Sola-Carmona, Juan Jesus; Lopez-Liria, Remedios; Padilla-Gongora, David; Daza, Maria Teresa; Sanchez-Alcoba, Manuel Alejandro

    2013-01-01

    In this study, the relation between levels of anxiety, self-esteem and subjective psychological well-being is analyzed in a Spanish sample of 28 fathers and 33 mothers of blind children. The results reveal a positive correlation between subjective psychological well-being and self-esteem, and a negative correlation between anxiety and subjective…

  19. Adjusting to Job Demands: The Role of Work Self-Determination and Job Control in Predicting Burnout

    Science.gov (United States)

    Fernet, Claude; Guay, Frederic; Senecal, Caroline

    2004-01-01

    This study examined the dynamic interplay among job demands, job control, and work self-determination in order to predict burnout dimensions. A three-way interaction effect was found between job demands, job control and work self-determination in predicting each dimension of burnout (emotional exhaustion, depersonalization, and personal…

  20. Adolescent Mothers' Adjustment to Parenting.

    Science.gov (United States)

    Samuels, Valerie Jarvis; And Others

    1994-01-01

    Examined adolescent mothers' adjustment to parenting, self-esteem, social support, and perceptions of baby. Subjects (n=52) responded to questionnaires at two time periods approximately six months apart. Mothers with higher self-esteem at Time 1 had better adjustment at Time 2. Adjustment was predicted by Time 2 variables; contact with baby's…

  1. Adolescent Mothers' Adjustment to Parenting.

    Science.gov (United States)

    Samuels, Valerie Jarvis; And Others

    1994-01-01

    Examined adolescent mothers' adjustment to parenting, self-esteem, social support, and perceptions of baby. Subjects (n=52) responded to questionnaires at two time periods approximately six months apart. Mothers with higher self-esteem at Time 1 had better adjustment at Time 2. Adjustment was predicted by Time 2 variables; contact with baby's…

  2. Self-efficacy expectations and emotional adjustment on coping with fibromyalgia - Las expectativas de autoeficacia y el ajuste emocional en el afrontamiento de la fibromialgia

    Directory of Open Access Journals (Sweden)

    Miguel Ángel Vallejo Pareja

    2009-04-01

    Full Text Available The objective was to evaluate the relationship between of self-efficacy expectations, psychological distress and coping strategies among subjects with fibromyalgia, given the physical and psychosocial components of pain, and specially the need to clarify the relationship between them in order to improve the adjustment to any chronic pain condition. One-hundred women diagnosed of fibromyalgia from the rehabilitation center at the Hospital Universitario Gregorio Marañón de Madrid completed the following set of questionnaires, the Hospital Anxiety and Depression Scale (HADS, the Chronic Pain Coping Inventory (CPCI and the Chronic Pain Self-efficacy Scale (CPSS. The results showed that self-efficacy was inversely correlated with psychological distress (anxiety and depression. Respect to coping strategies, task persistence was significantly related to expectations of self-efficacy, while this variable was inversely correlated with depression. A negative relation was found between guarding, resting and self-efficacy. These findings suggest that expectations of self-efficacy may have greater explanatory power over the use of positive coping strategies and correct emotional functioning in FMS patients.

  3. Anxiety, psychological well-being and self-esteem in Spanish families with blind children. A change in psychological adjustment?

    Science.gov (United States)

    Sola-Carmona, Juan Jesús; López-Liria, Remedios; Padilla-Góngora, David; Daza, María Teresa; Sánchez-Alcoba, Manuel Alejandro

    2013-06-01

    In this study, the relation between levels of anxiety, self-esteem and subjective psychological well-being is analyzed in a Spanish sample of 28 fathers and 33 mothers of blind children. The results reveal a positive correlation between subjective psychological well-being and self-esteem, and a negative correlation between anxiety and subjective psychological well-being, and between anxiety and self-esteem. In comparison with the general population, no statistically significant differences were found in anxiety and subjective psychological well-being; however, levels of self-esteem were significantly higher in families with blind children. These results suggest that the process of adaptation described in previous research may be changing, as having a blind child does not necessarily lead to parents' maladjustment. Copyright © 2013 Elsevier Ltd. All rights reserved.

  4. ADJUSTMENT FACTORS AND ADJUSTMENT STRUCTURE

    Institute of Scientific and Technical Information of China (English)

    Tao Benzao

    2003-01-01

    In this paper, adjustment factors J and R put forward by professor Zhou Jiangwen are introduced and the nature of the adjustment factors and their role in evaluating adjustment structure is discussed and proved.

  5. Weekly self-monitoring and treatment adjustment benefit patients with partly controlled and uncontrolled asthma: an analysis of the SMASHING study

    Directory of Open Access Journals (Sweden)

    Assendelft Willem JJ

    2010-06-01

    Full Text Available Abstract Background Internet-based self-management has shown to improve asthma control and asthma related quality of life, but the improvements were only marginally clinically relevant for the group as a whole. We hypothesized that self-management guided by weekly monitoring of asthma control tailors pharmacological therapy to individual needs and improves asthma control for patients with partly controlled or uncontrolled asthma. Methods In a 1-year randomised controlled trial involving 200 adults (18-50 years with mild to moderate persistent asthma we evaluated the adherence with weekly monitoring and effect on asthma control and pharmacological treatment of a self-management algorithm based on the Asthma Control Questionnaire (ACQ. Participants were assigned either to the Internet group (n = 101 that monitored asthma control weekly with the ACQ on the Internet and adjusted treatment using a self-management algorithm supervised by an asthma nurse specialist or to the usual care group (UC (n = 99. We analysed 3 subgroups: patients with well controlled (ACQ ≤ 0.75, partly controlled (0.75>ACQ ≤ 1.5 or uncontrolled (ACQ>1.5 asthma at baseline. Results Overall monitoring adherence was 67% (95% CI, 60% to 74%. Improvements in ACQ score after 12 months were -0.14 (p = 0.23, -0.52 (p 2-agonists between the Internet group and usual care. Conclusions Weekly self-monitoring and subsequent treatment adjustment leads to improved asthma control in patients with partly and uncontrolled asthma at baseline and tailors asthma medication to individual patients' needs. Trial registration Current Controlled Trials ISRCTN79864465

  6. Convexity Adjustments

    DEFF Research Database (Denmark)

    M. Gaspar, Raquel; Murgoci, Agatha

    2010-01-01

    of particular importance to practitioners: yield convexity adjustments, forward versus futures convexity adjustments, timing and quanto convexity adjustments. We claim that the appropriate way to look into any of these adjustments is as a side effect of a measure change, as proposed by Pelsser (2003...

  7. Parenting Effects on Self-Efficacy and Self-Esteem in Late Adolescence and How Those Factors Impact Adjustment to College

    Science.gov (United States)

    Smith, Gregory J

    2007-01-01

    Approximately three months before starting college, 203 high school seniors completed a questionnaire consisting of the General Self-Efficacy Scale, the Rosenberg Self-Esteem Scale, and the Parental Authority Questionnaire (PAQ) assessing their parents' parenting styles. The PAQ yielded scores on three parenting styles originally proposed by…

  8. The Power of the Virtual Ideal Self in Weight Control: Weight-Reduced Avatars Can Enhance the Tendency to Delay Gratification and Regulate Dietary Practices.

    Science.gov (United States)

    Kuo, Hsu-Chan; Lee, Chun-Chia; Chiou, Wen-Bin

    2016-02-01

    The tendency to discount larger future benefits in favor of smaller immediate gains (i.e., temporal discounting) is relevant to the issue of obesity. Successful weight loss requires individuals to sacrifice immediate culinary pleasures in favor of future health gains. Based on the notion that increasing the vividness of one's future self may mitigate temporal discounting and promote the ability to delay gratification, we examined whether viewing one's weight-reduced self (i.e., the ideal self) in a virtual environment can decrease temporal discounting and lead to better regulation of dietary practices. Seventy-six undergraduates who had reported an intention to lose weight were recruited to participate in a laboratory experiment and were randomly assigned to interact with either the weight-reduced self (experimental condition) or the present self (control condition) by looking into a dressing mirror in a virtual fitting room. A temporal-discounting task and a taste test were subsequently administered. Results showed that, compared with control participants, participants who viewed their weight-reduced avatars ate less ice cream in a taste test and were more likely to choose a sugar-free drink as a reward. The discounting rate mediated the association between the avatar manipulation and the amount of ice cream eaten in the subsequent taste test. Overall, our findings suggest that a computer-generated image of one's weight-reduced self may assist in resisting impulses that promote immediate gratification over delayed benefits. This research provides a new approach for controlling impulsive behavior such as dietary regulation and weight control.

  9. Magnetic compass application without self-deviation adjustment based on MATLAB%基于MATLAB的不校正自差的磁罗经使用研究

    Institute of Scientific and Technical Information of China (English)

    樊明波; 蔡君; 高杨

    2016-01-01

    As a necessary navigation instrument on a ship, magnetic compass needs to be adjusted before the application due to the magnetic force on the earth. In order to use the magnetic compass without adjustment, this paper ifrstly collects the partial self-deviations corresponding to the compass course during the ship turns round in a circle. The self-deviation coeffcients are obtained with MATLAB by solving a set of equations based on the basic self-deviation formula of the magnetic compass. The self-deviation coeffcients are then substituted into the basic formula to get the self-deviations on any compass course. The results show that the difference between the self-deviations solved by the basic formula and the measured self-deviations are within one degree. Therefore, the solved self-deviations can be used on the magnetic compass instead of the measured ones.%磁罗经是船舶必备的导航仪器,由于船磁的影响,要使用磁罗经需要先校正磁罗经自差。为达到不校正自差而使用磁罗经,通过采集船舶转向一周里部分罗航向对应的自差,根据磁罗经自差基本公式建立方程组,利用MATLAB软件求得自差系数。然后把自差系数代入自差基本公式求解出任意航向上的自差。结果表明,利用自差基本公式求解出的航向自差与在该航向上进行的实测自差在1°以内,能够很好地代替实测自差来使用磁罗经。

  10. THE CONNECTION BETWEEN THE SELF-FULFILLMENT OF STUDENTS IN COLLEGE AND THEIR MOTIVATIONAL AND ADJUSTMENT CHARACTERISTICS

    Directory of Open Access Journals (Sweden)

    Elena Nikolaevna Shutenko

    2013-11-01

    Full Text Available A productive college education must ensure the process of self-fulfillment of an individual’s personality in the educational system and encourage an increase in the basic abilities of a student as a subject of their learning and professional activities.The article states that the research results on the personal organization of students is connected to the performance of their self-fulfillment in the process of the academic studies. The innovation of the research is associated with the fact that self-fulfillment during the learning period is developed as a sociological category that reflects the process of socializing and depends on the structure and essence of the educational and social environment.The aim of the research is to discover, through empirical method, the features under consideration in the process of the students’ fulfillment through their personal characteristics: needs and motivations, purposes, features of self-attitude and orientations in connection with the purpose of life.The research methods: piloting questionnaires, observation, interviews, focus groups, sociological surveys (questionnaires, and complex sociological and psychological tests (use of battery of tests and questionnaires. Statistical methods: analysis of the authenticity of differences and correlational analysis.The research results show that the connection presence was established between the students’ self-fulfillment in college, their ambition to learn, their sense of wholeness, consistency of their attitude and a purpose-oriented way of life.The area for use of the results: the modernization of college studies based on the principle of the self-fulfillment by the young students in the learning process.DOI: http://dx.doi.org/10.12731/2218-7405-2013-8-47

  11. A stochastically forced time delay solar dynamo model: Self-consistent recovery from a maunder-like grand minimum necessitates a mean-field alpha effect

    Energy Technology Data Exchange (ETDEWEB)

    Hazra, Soumitra; Nandy, Dibyendu [Department of Physical Sciences, Indian Institute of Science Education and Research, Kolkata, West Bengal (India); Passos, Dário, E-mail: s.hazra@iiserkol.ac.in, E-mail: dariopassos@ist.utl.pt, E-mail: dnandi@iiserkol.ac.in [CENTRA-IST, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa (Portugal)

    2014-07-01

    Fluctuations in the Sun's magnetic activity, including episodes of grand minima such as the Maunder minimum have important consequences for space and planetary environments. However, the underlying dynamics of such extreme fluctuations remain ill-understood. Here, we use a novel mathematical model based on stochastically forced, non-linear delay differential equations to study solar cycle fluctuations in which time delays capture the physics of magnetic flux transport between spatially segregated dynamo source regions in the solar interior. Using this model, we explicitly demonstrate that the Babcock-Leighton poloidal field source based on dispersal of tilted bipolar sunspot flux, alone, cannot recover the sunspot cycle from a grand minimum. We find that an additional poloidal field source effective on weak fields—e.g., the mean-field α effect driven by helical turbulence—is necessary for self-consistent recovery of the sunspot cycle from grand minima episodes.

  12. Individual Differences in the Development of Self-Regulation during Pre-Adolescence: Connections to Context and Adjustment

    Science.gov (United States)

    King, Kevin M.; Lengua, Liliana J.; Monahan, Kathryn C.

    2013-01-01

    Difficulties with self-regulation are implicated in the development of emotional and behavioral problems during adolescence. Although children's ability to regulate their behaviors continues to improve throughout childhood and adolescence, it remains unclear how contextual risk factors might influence this development during the transition to…

  13. Peer and self-reports of victimization and bullying : Their differential association with internalizing problems and social adjustment

    NARCIS (Netherlands)

    Bouman, Thijs; van der Meulen, Matty; Goossens, Frits A.; Olthof, Tjeert; Vermande, Marjolijn M.; Aleva, Elisabeth A.

    2012-01-01

    Researchers typically employ either peer or self-reports to assess involvement in bullying. In this study, we examined the merits of each method for the identification of child characteristics related to victimization and bullying others. Accordingly, we investigated the difference between these two

  14. Individual Differences in the Development of Self-Regulation during Pre-Adolescence: Connections to Context and Adjustment

    Science.gov (United States)

    King, Kevin M.; Lengua, Liliana J.; Monahan, Kathryn C.

    2013-01-01

    Difficulties with self-regulation are implicated in the development of emotional and behavioral problems during adolescence. Although children's ability to regulate their behaviors continues to improve throughout childhood and adolescence, it remains unclear how contextual risk factors might influence this development during the transition to…

  15. Effect of Sodium Ascorbate and Delayed Bonding on the Bond Strength of Silorane and Two-step Self-etch Adhesive Systems in Bleached Enamel.

    Science.gov (United States)

    Abed Kahnemooyi, Mehdi; Ajami, Amir Ahmad; Kimyai, Soodabeh; Pournaghiazar, Fatemeh; Savadi Oskoee, Siavash; Mhammadi Torkani, Mohammad Ali

    2014-01-01

    Background and aims. Studies have shown decreased bond strength of composite resin to human and bovine bleached enamel. This study evaluated the effect of sodium ascorbate and delayed bonding on the bond strength of two adhesive systems to bleached enamel. Materials and methods. The labial surfaces of 150 sound bovine incisor teeth were abraded with abrasive paper. The teeth were randomly divided into 8 groups: A: control; B: bleached with 35% hydrogen peroxide; C: bleached with 35% hydrogen peroxide + sodium ascorbate gel; and D: bleached with 35% hydrogen peroxide + delayed bonding. In groups A‒D, silorane adhesive system and Filtek silorane composite resin were used. In groups E‒H, the same preparation methods of groups A-D were used. Two-step self-etch Clearfil SE Bond adhesive systems and AP-X composite resin were administered. Shear bond strength of each group was measured. Two samples were prepared for each surface preparation for ultra-structural evaluation. Two-way ANOVA and Tukey test were used for data analysis at Padhesive system type and surface preparation protocol was significant (P=0.014), withsignificant differences in shear bond strengths in terms of the adhesive systems (Padhesive system (Padhesive systems, and a one-week delay in bonding and 10% sodium ascorbate for10 minutes restored the bond strength in both adhesive systems.

  16. Self-help interventions for adjustment disorder problems: a randomized waiting-list controlled study in a sample of burglary victims.

    Science.gov (United States)

    Bachem, Rahel; Maercker, Andreas

    2016-09-01

    Adjustment disorders (AjD) are among the most frequent mental disorders yet often remain untreated. The high prevalence, comparatively mild symptom impairment, and transient nature make AjD a promising target for low-threshold self-help interventions. Bibliotherapy represents a potential treatment for AjD problems. This study investigates the effectiveness of a cognitive behavioral self-help manual specifically directed at alleviating AjD symptoms in a homogenous sample of burglary victims. Participants with clinical or subclinical AjD symptoms following experience of burglary were randomized to an intervention group (n = 30) or waiting-list control group (n = 24). The new explicit stress response syndrome model for diagnosing AjD was applied. Participants received no therapist support and assessments took place at baseline, after the one-month intervention, and at three-month follow-up. Based on completer analyses, group by time interactions indicated that the intervention group showed more improvement in AjD symptoms of preoccupation and in post-traumatic stress symptoms. Post-intervention between-group effect sizes ranged from Cohen's d = .17 to .67 and the proportion of participants showing reliable change was consistently higher in the intervention group than in the control group. Engagement with the self-help manual was high: 87% of participants had worked through at least half the manual. This is the first published RCT of a bibliotherapeutic self-help intervention for AjD problems. The findings provide evidence that a low-threshold self-help intervention without therapist contact is a feasible and effective treatment for symptoms of AjD.

  17. Children's adjustment after parental separation: teacher, peer and self-report in a Greek sample: a research note.

    Science.gov (United States)

    Hatzichristou, C

    1993-11-01

    The purpose of this study was to assess the psychosocial and academic competence of children from divorced families in Greece and to compare it with findings in other countries. The sample of the study consisted of fifth and sixth grade elementary school pupils (mean age = 11.3) attending Greek public schools. The "divorced family" group consisted of 26 children, while the control group consisted of all classmates of these students (N = 381) from intact families. Teacher, peer and self-rating instruments were used. Children from divorced families were found to experience serious difficulties in various aspects of their behavior and competence.

  18. The common sense model of self-regulation and psychological adjustment to predictive genetic testing: a prospective study.

    Science.gov (United States)

    van Oostrom, Iris; Meijers-Heijboer, Hanne; Duivenvoorden, Hugo J; Bröcker-Vriends, Annette H J T; van Asperen, Christi J; Sijmons, Rolf H; Seynaeve, Caroline; Van Gool, Arthur R; Klijn, Jan G M; Tibben, Aad

    2007-12-01

    This prospective study explored the contribution of illness representations and coping to cancer-related distress in unaffected individuals undergoing predictive genetic testing for an identified mutation in BRCA1/2 (BReast CAncer) or an HNPCC (Hereditary Nonpolyposis Colorectal Cancer)-related gene, based on the common sense model of self-regulation. Coping with hereditary cancer (UCL), illness representations (IPQ-R) and risk perception were assessed in 235 unaffected applicants for genetic testing before test result disclosure. Hereditary cancer distress (IES) and cancer worry (CWS) were assessed before, 2 weeks after and 6 months after result disclosure. Timeline (r = 0.30), consequences (r = 0.25), illness coherence (r = 0.21) and risk perception (r = 0.20) were significantly correlated to passive coping. Passive coping predicted hereditary cancer distress and cancer worry from pre-test (beta = 0.46 and 0.42, respectively) up to 6 months after result disclosure (beta = 0.32 and 0.19, respectively). Illness coherence predicted hereditary cancer distress up to 6 months after result disclosure (beta = 0.24), too. The self-regulatory model may be useful to predict the cognitive and emotional reactions to genetic cancer susceptibility testing. Identifying unhelpful representations and cognitive restructuring may be appropriate interventions to help distressed individuals undergoing genetic susceptibility testing for a BRCA1/2 or a HNPCC-related mutation.

  19. Self-similarity in the chemical evolution of galaxies and the delay time distribution of SNe Ia

    CERN Document Server

    Walcher, C J; Minchev, I; Chiappini, C; Bergemann, M; Bruzual, G; Charlot, S; Coelho, P R T; Gallazzi, A; Martig, M

    2016-01-01

    Recent improvements in the age dating of stellar populations and single stars allow us to study the ages and abundance of stars and galaxies with unprecedented accuracy. We here compare the relation between age and \\alpha-element abundances for stars in the solar neighborhood to that of local, early-type galaxies. We find both relations to be very similar. Both fall into two regimes with a flat slope for ages younger than ~9 Gyr and a steeper slope for ages older than that value. This quantitative similarity seems surprising, given the different types of galaxies and scales involved. For the sample of early-type galaxies we also show that the data are inconsistent with literature delay time distributions of either single or double Gaussian shape. The data are consistent with a power law delay time distribution. We thus confirm that the delay time distribution inferred for the Milky Way from chemical evolution arguments also must apply to massive early-type galaxies. We also offer a tentative explanation for t...

  20. Sibling comparison of differential parental treatment in adolescence: gender, self-esteem, and emotionality as mediators of the parenting-adjustment association.

    Science.gov (United States)

    Feinberg, M E; Neiderhiser, J M; Simmens, S; Reiss, D; Hetherington, E M

    2000-01-01

    This study employs findings from social comparison research to investigate adolescents' comparisons with siblings with regard to parental treatment. The sibling comparison hypothesis was tested on a sample of 516 two-child families by examining whether gender, self-esteem, and emotionality-which have been found in previous research to moderate social comparison-also moderate sibling comparison as reflected by siblings' own evaluations of differential parental treatment. Results supported a moderating effect for self-esteem and emotionality but not gender. The sibling comparison process was further examined by using a structural equation model in which parenting toward each child was associated with the adjustment of that child and of the child's sibling. Evidence of the "sibling barricade" effect-that is, parenting toward one child being linked with opposite results on the child's sibling as on the target child-was found in a limited number of cases and interpreted as reflecting a sibling comparison process. For older siblings, emotionality and self-esteem moderated the sibling barricade effect but in the opposite direction as predicted. Results are discussed in terms of older siblings' increased sensitivity to parenting as well as the report of differential parenting reflecting the child's level of comfort and benign understanding of differential parenting, which buffers the child against environmental vicissitudes evoking sibling comparison processes.

  1. Does self-reported physical activity associate with high blood pressure in adolescents when adiposity is adjusted for?

    Science.gov (United States)

    Barros, Mauro V G; Ritti-Dias, Raphael Mendes; Honda Barros, Simone Storino; Mota, Jorge; Andersen, Lars Bo

    2013-01-01

    Studies show that both low physical activity (PA) and adiposity are associated with a higher risk of hypertension. However, the relationship between PA and blood pressure in adolescents is controversial and other studies have reported that no association was observed. Of particular interest is the evaluation of whether the association between PA and high blood pressure is independent of adiposity. A sample of 3764 Brazilian adolescents who attend high schools was selected using random cluster sampling. Data were collected using the Global School-based Student Health Survey, anthropometry, and blood pressure readings. The prevalence of high blood pressure was 14.6% (95% Confidence Interval (CI) 13.5-15.7), higher amongst males (20.0%; 95%CI 18.0-22.1) compared with females (10.9%; 95%CI 9.7-12.3). Sixty-six per cent of the adolescents were reported to be insufficiently active. The prevalence of high blood pressure was 12.8% (95%CI 11.0-14.7) amongst active compared with 15.4% (95%CI 14.0-16.9) amongst insufficiently active adolescents. The association between PA and high blood pressure was observed only amongst females after adjusting for waist circumference (odds ratio (OR) 1.67; 95%CI 1.21-2.31) and body mass index (OR 1.71; 95%CI 1.23-2.37). Notwithstanding levels of adiposity, higher PA levels are associated with a lower prevalence of high blood pressure amongst females, although not amongst males.

  2. Research on the Adjustment in Contract Sum Caused by the Price Fluctuation during the Project Delay:Based on the Code of Valuation with Bill of Quantity of Construction Works (2013)%工期延误期间物价波动引起的合同价款调整研究--基于13清单规范

    Institute of Scientific and Technical Information of China (English)

    孙娜; 杜亚灵; 李淑湘

    2015-01-01

    Dispute about adjustment in contract sum caused by price fluctuation during the project delay is gradually increasing. Firstly, the division of responsibility on delay is determined under single event delay and common delay. Secondly, it is proposed that the divide of responsibility on price fluctuation during delay is determined based on the principle of "default not to benefit", and it is pointed out that determine of price indices under delay is different from normal construction progress when applying the formula of adjustment in contract sum. Thirdly, analysis of the determination of price indices under single event delay and common delay respectively based on above principle.%工期延误期间因物价波动引起的价款调整容易引起纠纷。首先,对单事件延误和共同延误这两种情况进行责任划分;其次,提出基于违约者不受益原则对工期延误期间物价波动进行责任划,并指出调价公式中价格指数在工期延误情况下的确定方法与施工进度正常情况下的确定方法有所不同;最后,基于上述原则分别在单事件延误和共同延误两种情况下对价格指数的确定进行详细分析。

  3. Retracted: Evaluation of the incidence of microcracks caused by Mtwo and ProTaper NEXT rotary file systems versus the Self Adjusting File: A scanning electron microscopic study.

    Science.gov (United States)

    Saha, S G; Vijaywargiya, N; Dubey, S; Saxena, D; Kala, S

    2015-11-24

    The following article from International Endodontic Journal, 'Evaluation of the incidence of microcracks caused by Mtwo and ProTaper NEXT rotary file systems versus the Self Adjusting File: a scanning electron microscopic study' by S. G. Saha, N. Vijaywargiya, S. Dubey, D. Saxena & S. Kala, published online on 24 November 2015 in Wiley Online Library (wileyonlinelibrary. com), has been retracted by agreement between the authors, the journal Editor in Chief, Prof. Paul Dummer, and John Wiley & Sons Ltd. The retraction has been agreed due to the consideration that the SEM methodology used by the authors has the potential to cause cracks and is thus is not suitable for the evaluation of micro-cracks in roots.

  4. Meant to make a difference, the clinical experience of minimally invasive endodontics with the self-adjusting file system in India.

    Science.gov (United States)

    Pawar, Ajinkya M; Pawar, Mansing G; Kokate, Sharad R

    2014-01-01

    The vital steps in any endodontic treatment are thorough mechanical shaping and chemical cleaning followed by obtaining a fluid tight impervious seal by an inert obturating material. For the past two decades, introduction and use of rotary nickel-titanium (Ni-Ti) files have changed our concepts of endodontic treatment from conventional to contemporary. They have reported good success rates, but still have many drawbacks. The Self-Adjusting File (SAF) introduces a new era in endodontics by performing the vital steps of shaping and cleaning simultaneously. The SAF is a hollow file in design that adapts itself three-dimensionally to the root canal and is a single file system, made up of Ni-Ti lattice. The case series presented in the paper report the clinical experience, while treating primary endodontic cases with the SAF system in India.

  5. Meant to make a difference, the clinical experience of minimally invasive endodontics with the self-adjusting file system in India

    Directory of Open Access Journals (Sweden)

    Ajinkya M Pawar

    2014-01-01

    Full Text Available The vital steps in any endodontic treatment are thorough mechanical shaping and chemical cleaning followed by obtaining a fluid tight impervious seal by an inert obturating material. For the past two decades, introduction and use of rotary nickel-titanium (Ni-Ti files have changed our concepts of endodontic treatment from conventional to contemporary. They have reported good success rates, but still have many drawbacks. The Self-Adjusting File (SAF introduces a new era in endodontics by performing the vital steps of shaping and cleaning simultaneously. The SAF is a hollow file in design that adapts itself three-dimensionally to the root canal and is a single file system, made up of Ni-Ti lattice. The case series presented in the paper report the clinical experience, while treating primary endodontic cases with the SAF system in India.

  6. A Kac CROW Delay Line

    CERN Document Server

    Sumetsky, M

    2013-01-01

    A low-loss CROW delay line with a weak inter-resonator coupling determined by the Kac matrix is dispersionless and can be easily impedance-matched by adjusting the coupling to the input/output waveguide.

  7. Self-adjusted elastic action and its CBM pool-forming effect of the high rank coal reservoir

    Institute of Scientific and Technical Information of China (English)

    QIN Yong; FU Xuehai; WU Caifang; FU Guoyou; BU Yingying

    2005-01-01

    The coal reservoir is a kind of geologic body with considerable elasticity, and its response to stress is more sensitive than the routine ones. In the pool-forming process of the coalbed methane, (CBM) the action of many external geodynamic factors in the coal reservoir is represented by the ability of CBM's diffusion and migration in the coal reservoir.Therefore, the occurrence of the natural fissures in the coal reservoir becomes a key that determines whether the CBM pool can be formed or not. Based on the principle, the authors have designed a comprehensive method of physical modeling to study the elasticity of the coal matrix block with different coal ranks in the light of the solid to fluid coupling,have established the model of the volume deformation (selfadjusted elastic effect) of the coal reservoir under the condition of the effective stress-adsorption/desorption, and have obtained a correct understanding of the law of the elastic deformation. Afterwards, a new viewpoint, named as the self-closing elastic effect for forming the CBM pool in the high rank reservoir, is put forward, providing an initial point and a scientific basis for a further investigation into its dynamic factors, possible mechanism and role in the CBM energy-balancing system.

  8. Facet-dependent photocatalytic mechanisms of anatase TiO{sub 2}: A new sight on the self-adjusted surface heterojunction

    Energy Technology Data Exchange (ETDEWEB)

    Gao, Shujun [State Key Laboratory of Materials-Orient Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009 (China); Wang, Wei, E-mail: wwnjut@hotmail.com [School of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing 210044 (China); Ni, Yaru [State Key Laboratory of Materials-Orient Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009 (China); Lu, Chunhua, E-mail: chhlu@njtech.edu.cn [State Key Laboratory of Materials-Orient Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009 (China); Xu, Zhongzi [State Key Laboratory of Materials-Orient Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009 (China)

    2015-10-25

    Efficient separation of photo-generated electrons and holes is crucial for improving the photocatalytic activity of semiconductor photocatalysts. In the present study, we show surface heterojunction is existed on anatase TiO{sub 2} with exposed {101}, {010}, {001}, and {110} facets. With the help of selective Pt deposition, it is found the Schottky junction together with proper surface heterojunction is helpful to separate the photo-generated electrons and holes. Moreover, the photo-reduction and photo-oxidation activities of the facets are depended on the reaction systems, resulting in self-adjusted surface heterojunction. The as-prepared photocatalyst will give the highest phenol degradation efficiency when Pt nanoparticles are only deposited on the {101} and {010} facets. In contrast, more Pt deposited on the {001} and {110} facets will decrease the photocatalytic activity. The average phenol degradation rate, which will gradually reduce along with the increased phenol concentration, of TiO{sub 2} (20 mg) is ca. 1.59 mg/min when its concentration is lower than 8 mg/L. However, similar results have not been observed in P25-based reaction systems, evidencing the great influence of self-adjusted surface heterojunction. This study may be helpful to understand the photocatalytic mechanisms of semiconductor photocatalysts with exposed different facets. Thus more efficient practical application of the photocatalysts for environment protection can be reached. - Highlights: • Surface heterojunction is systematically discussed on TiO{sub 2} with various facets. • The surface heterojunction is found to be closely related to the reaction systems. • Proper surface heterojunction and Schottky junction is positive for photocatalysis. • A new sight is given to sufficiently unleash the fascinating properties of TiO{sub 2}. • More efficient practical application can be reached.

  9. Design of self-adjusting tribo-tester fixture for piston ring%活塞环自调心夹具摩擦学试验设计

    Institute of Scientific and Technical Information of China (English)

    秦襄培; 吴丽; 鄢宁波; 曾诚; 武胜超

    2015-01-01

    为了研究活塞环的摩擦学问题,要使用活塞环上直接截取的一段试样进行实验,如果使用常规夹具,非对称的桶面活塞环作为销试样垂直于盘试样,不能保证摩擦接触面在工作面上,因此设计了一种活塞环自调心夹具,使得活塞环试样可以倾斜放置. 在随后的活塞环表面改性的筛选试验中,使用了所设计的新夹具,实验结果显示,盘试样和环试样的磨损量分别降低了1.5倍和2.3倍,实验筛选区分效果明显,自调心夹具可以满足实验要求.%To study the tribological problem of piston ring, a section cut from real piston is used to do exper-iment. If the convention fixture is used, the unsymmetrical drum piston ring is perpendicular to disc, which cannot guarantee friction surface lies on working surface. A self-adjusting fixture was designed to ensure that the piston ring sample can be inclined. The new designed fixture was used in the following screening tests of piston ring surface modification. The results show that the wear loss of disc sample and the ring sample de-crease 1.5 and 2.3 times respectively. Results of screening test are distinguished, and the self-adjusting fix-ture can meet the requirements of the experiment.

  10. The relationship between social support and self-reported health status in immigrants: an adjusted analysis in the Madrid Cross Sectional Study

    Directory of Open Access Journals (Sweden)

    Jiménez-García Rodrigo

    2011-06-01

    Full Text Available Abstract Background Social support is an important factor in the adaptation process of immigrants, helping for their integration in a new environment. The lack of social support may influence on well-being and health status. The aim of this study is to describe the social support of immigrant and native population and study the possible association between immigration and lack social support after adjusting for sociodemographic factors, income, stress and self-reported health status. Methods Cross-sectional population based study of immigrants and national patients without mental disorders of 15 urban primary health centers in the north-eastern area of Madrid. Participants provided information on social support, stress level, perceived health status and socio-economic characteristics. Descriptive and multiple logistic regression were conducted. Results The proportion of the global perception of social support among immigrants and natives was 79.2% and 94.2%, respectively. The lack of global social support adjusted prevalence ratio (PR of immigrant was 2.72 (95% Confidence Interval = 1.81-4.09, showing a significant association with being male (PR = 2.26, having monthly income below 500 euros (PR = 3.81 and suffering stress (PR = 1.94. For the dimensions of lack of social support the higher association was being an immigrant and suffering stress. Conclusions We conclude that with regardless of the level of monthly income, stress level, self-reported health status, and gender, immigrant status is directly associated with lack social support. The variable most strongly associated with lack social support has been monthly income below 500 euros.

  11. Integrating temporal difference methods and self-organizing neural networks for reinforcement learning with delayed evaluative feedback.

    Science.gov (United States)

    Tan, A H; Lu, N; Xiao, D

    2008-02-01

    This paper presents a neural architecture for learning category nodes encoding mappings across multimodal patterns involving sensory inputs, actions, and rewards. By integrating adaptive resonance theory (ART) and temporal difference (TD) methods, the proposed neural model, called TD fusion architecture for learning, cognition, and navigation (TD-FALCON), enables an autonomous agent to adapt and function in a dynamic environment with immediate as well as delayed evaluative feedback (reinforcement) signals. TD-FALCON learns the value functions of the state-action space estimated through on-policy and off-policy TD learning methods, specifically state-action-reward-state-action (SARSA) and Q-learning. The learned value functions are then used to determine the optimal actions based on an action selection policy. We have developed TD-FALCON systems using various TD learning strategies and compared their performance in terms of task completion, learning speed, as well as time and space efficiency. Experiments based on a minefield navigation task have shown that TD-FALCON systems are able to learn effectively with both immediate and delayed reinforcement and achieve a stable performance in a pace much faster than those of standard gradient-descent-based reinforcement learning systems.

  12. On the stability analysis of a pair of van der Pol oscillators with delayed self-connection, position and velocity couplings

    Directory of Open Access Journals (Sweden)

    Kun Hu

    2013-11-01

    Full Text Available In this paper, we perform a stability analysis of a pair of van der Pol oscillators with delayed self-connection, position and velocity couplings. Bifurcation diagram of the damping, position and velocity coupling strengths is constructed, which gives insight into how stability boundary curves come into existence and how these curves evolve from small closed loops into open-ended curves. The van der Pol oscillator has been considered by many researchers as the nodes for various networks. It is inherently unstable at the zero equilibrium. Stability control of a network is always an important problem. Currently, the stabilization of the zero equilibrium of a pair of van der Pol oscillators can be achieved only for small damping strength by using delayed velocity coupling. An interesting question arises naturally: can the zero equilibrium be stabilized for an arbitrarily large value of the damping strength? We prove that it can be. In addition, a simple condition is given on how to choose the feedback parameters to achieve such goal. We further investigate how the in-phase mode or the out-of-phase mode of a periodic solution is related to the stability boundary curve that it emerges from a Hopf bifurcation. Analytical expression of a periodic solution is derived using an integration method. Some illustrative examples show that the theoretical prediction and numerical simulation are in good agreement.

  13. Delayed ischemic cecal perforation despite optimal decompression after placement of a self-expanding metal stent: report of a case

    DEFF Research Database (Denmark)

    Knop, Filip Krag; Pilsgaard, Bo; Meisner, Søren

    2004-01-01

    Endoscopic deployment of self-expanding metal stents offers an alternative to surgical intervention in rectocolonic obstructions. Reported clinical failures in the literature are all related to the site of stent placement. We report a case of serious intra-abdominal disease after technically...... and clinically successful stent deployment: a potentially dangerous situation of which the surgeon should be aware. A previously healthy 72-year-old female was referred to our department with symptoms of an obstructing colorectal tumor. Successful stent placement resulted in resolution of the obstructive......, probably caused by ischemic conditions developed before stent-decompression of the colon was revealed during the operation. The patient died in the postoperative course. We discuss the observation of patients treated with self-expanding metal stents based on the selection-strategy used to allocate patients...

  14. The dopamine D2 antagonist eticlopride accelerates extinction and delays reacquisition of food self-administration in rats

    OpenAIRE

    Koerber, Jonathon; Goodman, David; Barnes, Jesse L.; Grimm, Jeffrey W.

    2013-01-01

    Dopamine receptors are implicated in the reinforcing effects of food and drug reinforcement. The purpose of this study was to evaluate whether blocking D2 dopamine receptors during extinction (secondary reinforcement) would affect reacquisition of responding for food pellets (primary reinforcement). Food-restricted rats self-administered (FR1) food pellets in 1-h daily sessions for seven days. For the next seven days rats responded in extinction conditions. Prior to each extinction session ra...

  15. Chiropractic Adjustment

    Science.gov (United States)

    ... syndrome) A certain type of stroke (vertebral artery dissection) after neck manipulation Don't seek chiropractic adjustment ... Chiropractic treatment. Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2015. Shekelle P, et al. Spinal ...

  16. Delayed onset of rotatory self-motion perception, dysdiadochokinesia and disturbed eye pursuit caused by low-dose pregabalin

    OpenAIRE

    Hounnou, Patrice; Nicoucar, Keyvan

    2014-01-01

    A 30-year-old woman with chronic foot pain after an orthopaedic surgery and chronic neck pain presented to the emergency department (ED) with a history of self-rotatory vertigo with unsteadiness. She had started low-dose pregabalin, 25 mg two times a day 9 months before experiencing symptoms with the dose gradually increased to 150 mg two times a day over this period. Clinical examination revealed difficulty performing eye pursuit with left eye and dysdiadochokinesia of the left arm. Owing to...

  17. Delayed ischemic cecal perforation despite optimal decompression after placement of a self-expanding metal stent: report of a case

    DEFF Research Database (Denmark)

    Knop, Filip Krag; Pilsgaard, Bo; Meisner, Søren;

    2004-01-01

    condition. Three days after stent deployment, x-ray examinations revealed a small-bowel obstruction and emergency surgery was performed. Intraoperative findings demonstrated a segment of ileum fixated to the tumor in the small pelvis, resulting in the obstructive condition. Furthermore, a cecal perforation...... to this specific treatment. We conclude that although a patient is eligible for treatment with self-expanding metal stents, large-bowel obstruction can be too "old" for stent-decompression, causing ischemic perforation of the colon. Furthermore, we underline the need to focus on the possibility of obstructions...

  18. Delayed fission

    Energy Technology Data Exchange (ETDEWEB)

    Hatsukawa, Yuichi [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

    1997-07-01

    Delayed fission is a nuclear decay process that couples {beta} decay and fission. In the delayed fission process, a parent nucleus undergoes {beta} decay and thereby populates excited states in the daughter. If these states are of energies comparable to or greater than the fission barrier of the daughter, then fission may compete with other decay modes of the excited states in the daughter. In this paper, mechanism and some experiments of the delayed fission will be discussed. (author)

  19. Self-Adjusting Teaching Machines.

    Science.gov (United States)

    Dovgyallo, A. M.

    A study was made on the synthesis of teaching machine elements to ensure the stabilization of the chi indicator of the teaching process of each student. At first, a procedure was developed for calculating the chi indicator for the case when the teaching machine predicts the magnitude of this indicator based on probabilities derived from an…

  20. The self-adjusting file instrumentation results in less debris extrusion apically when compared to WaveOne and ProTaper NEXT

    Science.gov (United States)

    Pawar, Ajinkya M.; Pawar, Mansing G.; Metzger, Zvi; Kokate, Sharad R.

    2015-01-01

    Aim: The present ex vivo study aimed to evaluate the debris extrusion after instrumenting the root canals by three different files systems. Materials and Methods: Sixty extracted human mandibular premolars with single canals were selected and randomly divided into three groups (n = 20) for instrumentation with three different files. Group 1: WaveOne (primary) single reciprocating file (WO; Dentsply Maillefer, Ballaigues, Switzerland) (25/08), Group 2: Self-adjusting file (SAF; ReDent-Nova, Ra’anana, Israel) (1.5 mm), and Group 3: ProTaper NEXT X1 and X2 (PTN; Dentsply Tulsa Dental, Tulsa, OK) (25/06). Debris extruding by instrumentation were collected into pre-weighed Eppendorf tubes. These tubes were then stored in an incubator at 70°C for 5 days. The tubes were then weighed to obtain the final weight, with the extruded debris. Statistical analysis for the debris extruded apically was performed using one-way analysis of variance and post hoc Tukey's test. Results: The statistical analysis showed a significant difference between all the three groups tested (P < 0.01). The following post hoc Tukey's test confirmed that Group 2 (SAF) exhibited significantly least (P < 0.01) debris extrusion between the three groups tested. Conclusions: The SAF resulted in significantly less extrusion of debris when compared to reciprocating WO and rotary PTN. PMID:25829683

  1. The research of a new self-adjustment flow control valve%一种新型恒流量控制阀的研究

    Institute of Scientific and Technical Information of China (English)

    汤中彩; 麻剑锋; 沈新荣; 刘凯凯

    2012-01-01

    创新设计了一种机械结构简单、通流能力强、精度高的机械自力式恒流量控制阀.采用RNGk-ε湍流模型和SIMPLE算法对不同阀芯位移进行数值模拟,根据模拟结果对模型进行优化.利用自行搭建的高精度数据采样实验平台对设计的恒流量控制阀进行实验研究,实验验证该恒流量控制阀能通过线性弹簧实现高精度恒流量控制功能.%Innovatively designs a mechanical self-adjustment flow control valve model with simple mechanical structure, large flow rate and high control precision, and then numerically simulates this valve with RNGk - s turbulence model and SIMPLE method of unstructured grid under different valve core displacement, optimize the designed curve of this valve core by the outcome of pressure & valve core displacement curve of the control valve. The paper experiments the constant flow control valve model, and gains a flow rate & pressure curve of the product model, which shows it is feasible that using a linear spring to achieve a constant flow rate of the valve with high precision capability.

  2. Fracture Resistance of Endodontically Retreated Roots After Retreatment Using Self-Adjusting File, Passive Ultrasonic Irrigation, Photon-Induced Photoacoustic Streaming, or Laser.

    Science.gov (United States)

    Kamalak, Aliye; Uzun, Ismail; Arslan, Hakan; Keleş, Ali; Doğanay, Ezgi; Keskin, Cangül; Akçay, Merve

    2016-10-01

    Additional cleaning techniques and devices are required to remove maximum amount of residual filling material, which might limit disinfection of root canal system during retreatment. This study aimed to compare fracture resistance of roots when self-adjusting file (SAF), photon-induced photoacoustic streaming (PIPS), passive ultrasonic irrigation (PUI), erbium-doped yttrium aluminum garnet (Er:YAG), or neodymium-doped yttrium aluminum garnet (Nd:YAG) lasers are applied following the use of retreatment files in endodontics. A total of 117 human mandibular canine teeth of similar dimensions were selected and divided into nine groups (n = 13). Aside from control, instrumented, and only-prepared groups, 91 teeth were remaining, of which 13 were assigned to the only-filling group and final 78 to retreatment, thus R-Endo file, R-Endo+SAF, R-Endo+PUI, R-Endo+Er:YAG laser, R-Endo+Nd:YAG laser, and R-Endo+PIPS. The fracture strengths of the retreatment groups were lower than control, instrumented, and only-filling groups (p  0.05). Further cleaning methods using SAF, PIPS, Er:YAG laser, Nd:YAG laser, or PUI did not decrease the fracture resistance when compared with the R-Endo group.

  3. 3D Analysis of D-RaCe and Self-Adjusting File in Removing Filling Materials from Curved Root Canals Instrumented and Filled with Different Techniques

    Directory of Open Access Journals (Sweden)

    Neslihan Simsek

    2014-01-01

    Full Text Available The aim of this study was to compare the efficacy of D-RaCe files and a self-adjusting file (SAF system in removing filling material from curved root canals instrumented and filled with different techniques by using microcomputed tomography (micro-CT. The mesial roots of 20 extracted mandibular first molars were used. Root canals (mesiobuccal and mesiolingual were instrumented with SAF or Revo-S. The canals were then filled with gutta-percha and AH Plus sealer using cold lateral compaction or thermoplasticized injectable techniques. The root fillings were first removed with D-RaCe (Step 1, followed by Step 2, in which a SAF system was used to remove the residual fillings in all groups. Micro-CT scans were used to measure the volume of residual filling after root canal filling, reinstrumentation with D-RaCe (Step 1, and reinstrumentation with SAF (Step 2. Data were analyzed using Wilcoxon and Kruskal-Wallis tests. There were no statistically significant differences between filling techniques in the canals instrumented with SAF (P=0.292 and Revo-S (P=0.306. The amount of remaining filling material was similar in all groups (P=0.363; all of the instrumentation techniques left filling residue inside the canals. However, the additional use of SAF was more effective than using D-RaCe alone.

  4. Comparative evaluation of apically extruded debris with V-Taper, ProTaper Next, and the Self-adjusting File systems

    Directory of Open Access Journals (Sweden)

    Nishant K Vyavahare

    2016-01-01

    Full Text Available Background: Complete cleaning of the root canal is the goal for ensuring success in endodontics. Removal of debris plays an important role in achieving this goal. In spite of advancements in instrument design, apical extrusion of debris remains a source of inflammation in the periradicular region. Aim: To comparatively evaluate the amount of apically extruded debris with V-Taper, ProTaper Next, and the self-adjusting File (SAF system. Materials and Methods: Sixty-four extracted human mandibular teeth with straight root canals were taken. Access openings were done and working length determined. The samples were randomly divided into three groups: Group I - V-Taper files (n = 20, Group II - ProTaper Next (n = 20, Group III - SAF (n = 20. Biomechanical preparation was completed and the debris collected in vials to be quantitatively determined. The data obtained was statistically analyzed using ANOVA and post hoc Tukey′s test. Results: All the specimens showed apical debris extrusion. SAF showed significantly less debris extrusion compared to V-Taper and ProTaper Next (P < 0.001. Among Groups I and II, ProTaper Next showed lesser debris extrusion as compared to V-Taper, but it was not significant (P = 0.124. Conclusion: The SAF showed least amount of apical debris extrusion when compared to newer rotary endodontic instruments. This indicates that the incidence of inter-treatment flare-ups due to debris extrusion would be less with the SAF.

  5. Effectiveness of the self-adjusting file versus ProTaper systems to remove the smear layer in artificially induced internal root resorption cavities

    Directory of Open Access Journals (Sweden)

    Senem Yigit Özer

    2013-01-01

    Full Text Available Aim: Smear layer removal from artificially prepared internal root resorption (IRR cavities using the self-adjusting file (SAF system with activated continuous irrigation or the ProTaper system (Dentsply Maillefer, Ballaigues, Switzerland with conventional syringe/needle irrigation was compared. Materials and methods: Twenty-eight maxillary central incisors were selected, decoronated and 20 of them were randomizedly splited along the coronal plane into labial and lingual sections, and artificial IRR cavities were prepared in both walls. Tooth segments were rejoined and teeth were divided into two groups. Each group (n = 10 was prepared using the SAF or ProTaper system with 12-mL 5.25% NaOCl and 12-mL 17% EDTA. Root canals were prepared in six intact positive control teeth using the SAF or ProTaper system with 5.25% NaOCl and 17% EDTA. As negative controls, two intact teeth were prepared using NaOCl only. Roots were than split longitudinally from the rejoined segments and samples were evaluated under scanning electron microscopy using a five-point scoring system. Results: Most SAF (87% and ProTaper (83% samples (P > 0.05, had scores of 1 and 2 indicating clean canal walls for the IRR cavities. Conclusions: SAF with activated continuous irrigation and ProTaper with conventional syringe/needle irrigation both successfully removed the smear layer from artificially prepared IRR cavities

  6. The self-adjusting file instrumentation results in less debris extrusion apically when compared to WaveOne and ProTaper NEXT

    Directory of Open Access Journals (Sweden)

    Ajinkya M Pawar

    2015-01-01

    Full Text Available Aim: The present ex vivo study aimed to evaluate the debris extrusion after instrumenting the root canals by three different files systems. Materials and Methods: Sixty extracted human mandibular premolars with single canals were selected and randomly divided into three groups (n = 20 for instrumentation with three different files. Group 1: WaveOne (primary single reciprocating file (WO; Dentsply Maillefer, Ballaigues, Switzerland (25/08, Group 2: Self-adjusting file (SAF; ReDent-Nova, Ra′anana, Israel (1.5 mm, and Group 3: ProTaper NEXT X1 and X2 (PTN; Dentsply Tulsa Dental, Tulsa, OK (25/06. Debris extruding by instrumentation were collected into pre-weighed Eppendorf tubes. These tubes were then stored in an incubator at 70΀ C for 5 days. The tubes were then weighed to obtain the final weight, with the extruded debris. Statistical analysis for the debris extruded apically was performed using one-way analysis of variance and post hoc Tukey′s test. Results: The statistical analysis showed a significant difference between all the three groups tested (P < 0.01. The following post hoc Tukey′s test confirmed that Group 2 (SAF exhibited significantly least (P < 0.01 debris extrusion between the three groups tested. Conclusions: The SAF resulted in significantly less extrusion of debris when compared to reciprocating WO and rotary PTN.

  7. Aberrant Behaviours of Reaction Diffusion Self-organisation Models on Growing Domains in the Presence of Gene Expression Time Delays

    KAUST Repository

    Seirin Lee, S.

    2010-03-23

    Turing\\'s pattern formation mechanism exhibits sensitivity to the details of the initial conditions suggesting that, in isolation, it cannot robustly generate pattern within noisy biological environments. Nonetheless, secondary aspects of developmental self-organisation, such as a growing domain, have been shown to ameliorate this aberrant model behaviour. Furthermore, while in-situ hybridisation reveals the presence of gene expression in developmental processes, the influence of such dynamics on Turing\\'s model has received limited attention. Here, we novelly focus on the Gierer-Meinhardt reaction diffusion system considering delays due the time taken for gene expression, while incorporating a number of different domain growth profiles to further explore the influence and interplay of domain growth and gene expression on Turing\\'s mechanism. We find extensive pathological model behaviour, exhibiting one or more of the following: temporal oscillations with no spatial structure, a failure of the Turing instability and an extreme sensitivity to the initial conditions, the growth profile and the duration of gene expression. This deviant behaviour is even more severe than observed in previous studies of Schnakenberg kinetics on exponentially growing domains in the presence of gene expression (Gaffney and Monk in Bull. Math. Biol. 68:99-130, 2006). Our results emphasise that gene expression dynamics induce unrealistic behaviour in Turing\\'s model for multiple choices of kinetics and thus such aberrant modelling predictions are likely to be generic. They also highlight that domain growth can no longer ameliorate the excessive sensitivity of Turing\\'s mechanism in the presence of gene expression time delays. The above, extensive, pathologies suggest that, in the presence of gene expression, Turing\\'s mechanism would generally require a novel and extensive secondary mechanism to control reaction diffusion patterning. © 2010 Society for Mathematical Biology.

  8. Mood Adjustment via Mass Communication.

    Science.gov (United States)

    Knobloch, Silvia

    2003-01-01

    Proposes and experimentally tests mood adjustment approach, complementing mood management theory. Discusses how results regarding self-exposure across time show that patterns of popular music listening among a group of undergraduate students differ with initial mood and anticipation, lending support to mood adjustment hypotheses. Describes how…

  9. Salary adjustments

    CERN Multimedia

    HR Department

    2008-01-01

    In accordance with decisions taken by the Finance Committee and Council in December 2007, salaries are adjusted with effect from 1 January 2008. Scale of basic salaries and scale of stipends paid to fellows (Annex R A 5 and R A 6 respectively): increased by 0.71% with effect from 1 January 2008. As a result of the stability of the Geneva consumer price index, the following elements do not increase: a)\tFamily Allowance, Child Allowance and Infant Allowance (Annex R A 3); b)\tReimbursement of education fees: maximum amounts of reimbursement (Annex R A 4.01) for the academic year 2007/2008. Related adjustments will be applied, wherever applicable, to Paid Associates and Students. As in the past, the actual percentage increase of each salary position may vary, due to the application of a constant step value and rounding effects. Human Resources Department Tel. 73566

  10. Salary adjustments

    CERN Multimedia

    HR Department

    2008-01-01

    In accordance with decisions taken by the Finance Committee and Council in December 2007, salaries are adjusted with effect from 1 January 2008. Scale of basic salaries and scale of stipends paid to fellows (Annex R A 5 and R A 6 respectively): increased by 0.71% with effect from 1 January 2008. As a result of the stability of the Geneva consumer price index, following elements do not increase: a) Family Allowance, Child Allowance and Infant Allowance (Annex R A 3). b) Reimbursement of education fees: maximum amounts of reimbursement (Annex R A 4.01) for the academic year 2007/2008. Related adjustments will be implemented, wherever applicable, to Paid Associates and Students. As in the past, the actual percentage increase of each salary position may vary, due to the application of a constant step value and the rounding effects. Human Resources Department Tel. 73566

  11. 音乐教师课堂应激心理及自我调适%Music teachers classroom psychological stress and self-adjustment

    Institute of Scientific and Technical Information of China (English)

    陈荣

    2013-01-01

    With music education reform continued to deepen ,music education affective features the full attention ,students learn increasingly comprehensive psychological studies ,but music teacher psychological research has been relatively scarce .Teaching is a stress careers ,in music teaching music teacher changes the psychological stress on students learning and learning outcomes have enormous impact Teachers also affect work perfomance and physical health ,the paper on the music teacher's classroom performance and stress source attrubution ,to explore classroom psychological stress of self -adjustment.%随着音乐教育改革的不断深入,音乐教育的情感性特征得到了充分的重视,学生的学习心理研究日趋全面,但是对于音乐教师的心理研究却相对匮乏。作为教师心理的重要研究部分,音乐教师应激心理在课堂教学中对学生的学习状况及学习结果有着巨大的影响,同时也影响教师工作绩效和身心健康,本文就音乐教师课堂的应激表现及应激源的归因,探索音乐教师课堂应激心理自我调适的手段。

  12. Micro-computed Tomography Assessment of Dentinal Micro-cracks after Root Canal Preparation with TRUShape and Self-adjusting File Systems.

    Science.gov (United States)

    Zuolo, Mario Luis; De-Deus, Gustavo; Belladonna, Felipe Gonçalves; Silva, Emmanuel João Nogueira Leal da; Lopes, Ricardo Tadeu; Souza, Erick Miranda; Versiani, Marco Aurélio; Zaia, Alexandre Augusto

    2017-04-01

    The aim of the present study was to evaluate the percentage frequency of dentinal micro-cracks observed after root canal preparation with TRUShape and Self-Adjusting File (SAF) systems by means of micro-computed tomography imaging analysis. A conventional full-sequence rotary system (BioRace) and a single-file reciprocation system (Reciproc) were used as reference techniques for comparison because of their known assertive cutting efficiency. Forty anatomically matched mandibular incisors were selected, scanned at a resolution of 14.25 μm, and assigned to 4 experimental groups (n = 10), according to the preparation protocol: TRUShape, SAF, BioRace, and Reciproc systems. After the experimental procedures, the specimens were scanned again, and the registered preoperative and postoperative cross-section images of the roots (n = 70,030) were screened to identify the presence of dentinal micro-cracks. Overall, dentinal defects were observed in 28,790 cross-section images (41.11%). In the TRUShape, SAF, BioRace, and Reciproc groups, dentinal micro-cracks were visualized in 56.47% (n = 9842), 42.38% (n = 7450), 32.90% (n = 5826), and 32.77% (n = 5672) of the slices, respectively. All dentinal defects observed in the postoperative data sets were already present in the corresponding preoperative images. None of the preparation systems induced the formation of new dentinal micro-cracks. Copyright © 2016 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.

  13. Comparison of calcium hydroxide removal by self-adjusting file, EndoVac, and CanalBrush agitation techniques: An in vitro study

    Directory of Open Access Journals (Sweden)

    Sevinç Aktemur Türker

    2013-01-01

    Full Text Available Objectives: This study comparatively evaluated the efficacy of self-adjusting file (SAF, Endovac, and CanalBrush irrigant agitation protocols in removing calcium hydroxide (Ca(OH 2 from the root canals. Materials and Methods: Sixty extracted human mandibular canine teeth were instrumented with ProTaper rotary instruments to size #40 and dressed with Ca(OH 2 . The roots were randomly assigned to four groups according to irrigant agitation protocol used (n = 15. In Group 1: Conventional syringe irrigation (no activation, control; Group 2: Rotary brush agitation (CanalBrush; Group 3: Apical negative pressure irrigation (EndoVac system; and Group 4: Sonic agitation (SAF were used. Scanning electron microscopic (SEM evaluation was done for assessment of Ca(OH 2 removal in the coronal and apical thirds. Statistical analysis was performed by Wilcoxon and Kruskal-Wallis tests. Results: There were statistically significant differences among the groups (P = 0.218. A statistically significant difference was seen between the test groups in Ca(OH 2 removal from the apical third of the canal (P 0.05. The most efficient Ca(OH 2 removal in apical third was recorded in Group 3 (EndoVac and Group 4 (SAF (P < 0.05. In Group 4 (sonic agitation, there was no significantly difference between Ca(OH 2 removal in coronal and apical thirds. Conclusions: SAF and EndoVac showed significantly better performance than CanalBrush and conventional syringe irrigation in removing Ca(OH 2 from apical third of the root canals.

  14. Adjustable Fiber Optic Microwave Transversal Filters

    Science.gov (United States)

    Shadaram, Mehdi; Lutes, George F.; Logan, Ronald T.; Maleki, Lutfollah

    1994-01-01

    Microwave transversal filters implemented as adjustable tapped fiber optic delay lines developed. Main advantages of these filters (in comparison with conventional microwave transversal filters) are small size, light weight, no need for matching of radio-frequency impedances, no need for shielding against electromagnetic radiation at suboptical frequencies, no need for mechanical tuning, high stability of amplitude and phase, and active control of transfer functions. Weights of taps in fiber optic delay lines adjusted.

  15. Synchronizing time delay systems using variable delay in coupling

    Energy Technology Data Exchange (ETDEWEB)

    Ambika, G., E-mail: g.ambika@iiserpune.ac.in [Indian Institute of Science Education and Research, Pune 411 021 (India); Amritkar, R.E., E-mail: amritkar@prl.res.in [Physical Research Laboratory, Ahmedabad 380 009 (India)

    2011-11-15

    Highlights: > Delay and anticipation in coupling function varies with system dynamics. > Delay or anticipation of the synchronized state is independent of system delay. > Stability analysis developed is quite general. > We demonstrate enhanced security in communication. > Generalized synchronization possible over a wide range of parameter mismatch. - Abstract: We present a mechanism for synchronizing time delay systems using one way coupling with a variable delay in coupling that is reset at finite intervals. We present the analysis of the error dynamics that helps to isolate regions of stability of the synchronized state in the parameter space of interest for single and multiple delays. We supplement this by numerical simulations in a standard time delay system like Mackey Glass system. This method has the advantage that it can be adjusted to be delay or anticipatory in synchronization with a time which is independent of the system delay. We demonstrate the use of this method in communication using the bi channel scheme. We show that since the synchronizing channel carries information from transmitter only at intervals of reset time, it is not susceptible to an easy reconstruction.

  16. 流动儿童的学校归属感和学校适应:集体自尊的中介作用%School Belonging and Adjustment in Migrant Children:Mediating Role of Collective Self-esteem

    Institute of Scientific and Technical Information of China (English)

    彭丽娟; 陈旭; 雷鹏; 邹荣

    2012-01-01

    Objective: To explore the relationship between school belonging and school adjustment among migrant children. Moreover, it focused on the mediating role of collective self-esteem between them. Methods: Seven hundred and nineteen migrant children were investigated by self-administrated questionnaires. Results: ① Migrant children's school adjustment was so good, but it showed significant sex differences. ②There was notable relationship between school belonging and school adjustment, as well as all the scales of these two variables. Furthermore, school involvement, school environment, school input and peer relationship could significantly predict the school adjustment of migrant children. ③The relation between school belonging and school adjustment was partially mediated by collective self-esteem. Conclusion: Migrant children' 9 school belonging improves their school adjustment through enhancing collective self-esteem.%目的:考查流动儿童学校归属感和学校适应的关系,以及集体自尊在二者之间的中介作用.方法:对719名流动儿童进行问卷调查.结果:①流动儿童的学校适应情况良好,但存在显著的性别差异;②流动儿童的学校归属感和学校适应,以及变量各维度间显著相关,并且学校融入、学校环境、学校投入和同伴关系能显著预测流动儿童的学校适应;③流动儿童的集体自尊在学校归属感和学校适应间起部分中介作用.结论:流动儿童的学校归属感通过提高其集体自尊而促进学校适应.

  17. The Adjustment of Australian Children Growing Up in Single-Parent Families as Measured by Their Competence and Self-Esteem.

    Science.gov (United States)

    Pike, Lisbeth T.

    2003-01-01

    Compared the competence and self-esteem of 136 Australian primary school-aged children from different single-parent residency arrangements to those of a matched sample of two-parent children. Found that overall, single-parent children were not significantly different from two-parent children in competence levels and self-esteem. Found subtle…

  18. Sibling Comparison of Differential Parental Treatment in Adolescence: Gender, Self-Esteem, and Emotionality as Mediators of the Parenting-Adjustment Association.

    Science.gov (United States)

    Feinberg, Mark E.; Neiderhiser, Jenae M.; Simmens, Sam; Reiss, David; Hetherington, E. Mavis

    2000-01-01

    Compared adolescent siblings' evaluations of parental treatment. Found support for a moderating effect for self-esteem and emotionality but not gender. Evidence of the "sibling barricade" effect was limited and interpreted as reflecting a sibling comparison process. For older siblings, emotionality and self-esteem moderated the sibling barricade…

  19. The Calculation of Self-care Time of the Elderly Based Disability-adjusted Life Expectancy%基于失能调整预期寿命的老年人自理时间测算

    Institute of Scientific and Technical Information of China (English)

    尹尚菁

    2012-01-01

    Objectives To understand the relationship between self-care time and life expectancy. Methods To calculate self-care time by disability-adjusted life expectancy( DALE) and its proportion in life expectancy. Results The proportions of disability-adjusted life expectancy and dementia-adjusted life expectancy in life expectancy showed downward trend with age growing, and the later declined faster by comparison. Conclusions The calculations of disability-adjusted life expectancy and dementia-adjusted life expectancy both support morbidity expansion theory, in the context of longer life, we should pay more attention to the quality of life of the elderly.%目的 了解老年人自理时间与预期寿命的关系.方法 利用失能调整预期寿命推算老年人自理时间及其占预期寿命的比例.结果 老年人失能调整预期寿命与失智调整预期寿命占预期寿命的比例均随寿命的增长呈现出下降的趋势,且失智所占的比例下降速度更快.结论 失能与失智调整预期寿命的计算均支持疾病扩张理论,在寿命延长的背景下,应该更加关注老年人的生活质量.

  20. Adjusting to the Emergent

    DEFF Research Database (Denmark)

    Revsbæk, Line

    of ‘adjusting to the emergent’. Newcomer innovation is portrayed as carrying a variety of possible significations, such as unintentional innovation effects of newcomer’s proactive self-socializing behavior; an inspirational basis for designing innovation-generating employee induction; ‘resonant instances...... in standardized induction programs where newcomers are cast in roles as insecure novices needing to be “taught the ropes” of the organizational culture. Linked with this, it is suggested that the prevailing dichotomy of ‘newcomer assimilation’ versus ‘organizational accommodation’ is replaced with a notion...

  1. Managing psychosocial adjustment to aphasia.

    Science.gov (United States)

    Müller, D

    1999-01-01

    This article argues for incorporating psychosocial adjustment into treatment plans for people with aphasia. It proposes that rehabilitation is a social rather than a medical construct and that by adopting a broad range of intervention strategies, more effective approaches to reintegration can be adopted. Outcome measures relating to self-esteem are judged to be central to evaluating the efficacy of treatment. The role of social factors in managing psychosocial adjustment are considered alongside individual and family approaches to counseling. It is concluded that clinicians need to broaden their treatment program to include psychosocial adjustment in rehabilitation.

  2. Self-Efficacy, Perceived Social Support, and Psychological Adjustment in International Undergraduate Students in a Public Higher Education Institution in Malaysia

    Science.gov (United States)

    Yusoff, Yusliza Mohd.

    2012-01-01

    The globalization of the economy and society has had its impact on Malaysian higher education institutions, particularly universities. The Malaysian Ministry of Higher Education aims at intensifying globalization through increasing the number of international students. However, many international students struggle with adjusting to a new culture.…

  3. Can I Graduate from College?: The Influence of Ethnic Identity, Ethnicity, Academic Self-Efficacy and Optimism on College Adjustment among Community College Students

    Science.gov (United States)

    Patterson, Deanna

    2011-01-01

    Deficits in college success rates have prompted several explanatory theories and identification of factors that can remediate these deficits. In particular, there has been an examination of dispositional factors that dictate college student adjustment and subsequent success in academic settings. The study examined the relationship between…

  4. Discrepancies Between Youth and Mothers' Perceptions of Their Mother-Child Relationship Quality and Self-Disclosure: Implications for Youth- and Mother-Reported Youth Adjustment

    Science.gov (United States)

    Reidler, Esther B.; Swenson, Lance P.

    2012-01-01

    Recently, researchers have devoted greater attention to understanding how disagreement between mothers and their children regarding parent-child relationship quality and functioning impacts youth adjustment. While some view discrepancies as indices of developmentally appropriate individuation, discrepancies regarding family functioning also have…

  5. Application of Fuzzy Self-Optimizing Control Based on Differential Evolution Algorithm for the Ratio of Wind to Coal Adjustment of Boiler in the Thermal Power Plant

    National Research Council Canada - National Science Library

    Ting Hou; Liping Zhang; Yuchen Chen

    2014-01-01

    .... In this paper, a kind of fuzzy self-optimizing control based on differential evolution algorithm is proposed, which applied in the power plant boiler system, the boiler combustion efficiency has been...

  6. Effects of delay and probability combinations on discounting in humans.

    Science.gov (United States)

    Cox, David J; Dallery, Jesse

    2016-10-01

    To determine discount rates, researchers typically adjust the amount of an immediate or certain option relative to a delayed or uncertain option. Because this adjusting amount method can be relatively time consuming, researchers have developed more efficient procedures. One such procedure is a 5-trial adjusting delay procedure, which measures the delay at which an amount of money loses half of its value (e.g., $1000 is valued at $500 with a 10-year delay to its receipt). Experiment 1 (n=212) used 5-trial adjusting delay or probability tasks to measure delay discounting of losses, probabilistic gains, and probabilistic losses. Experiment 2 (n=98) assessed combined probabilistic and delayed alternatives. In both experiments, we compared results from 5-trial adjusting delay or probability tasks to traditional adjusting amount procedures. Results suggest both procedures produced similar rates of probability and delay discounting in six out of seven comparisons. A magnitude effect consistent with previous research was observed for probabilistic gains and losses, but not for delayed losses. Results also suggest that delay and probability interact to determine the value of money. Five-trial methods may allow researchers to assess discounting more efficiently as well as study more complex choice scenarios. Copyright © 2016 Elsevier B.V. All rights reserved.

  7. Self-adaptive adjustment height of the drum in the shearer based on artificial immune and memory cutting%基于人工免疫和记忆切割的采煤机滚筒自适应调高

    Institute of Scientific and Technical Information of China (English)

    王忠宾; 徐志鹏; 董晓军

    2009-01-01

    为实现采煤机截割滚筒的自动调高,利用记忆切割实现采煤机工作路径的记忆,采煤机利用记忆的相应位置的切割参数自动工作;当煤层地质条件发生变化,采煤机记忆的相应参数与实际参数不一致时,利用人工免疫理论进行数据处理和工作状态判断,实现采煤机截割滚筒的自适应调高.试验表明:基于人工免疫和记忆切割的方法,可以使采煤机适应煤层顶扳条件的变化,能够实现采煤机截割滚筒的自适应调高.%In order to realize the self-adaptive adjustment height of the cutter drum in the shearer, memory cutting technology was adopted to memorize the working path of the shearer, the shearer automatically worked according to the parameters of the relevant location which was remembered. When the geological conditions of the coal-seam boundary changes, the parameters which the shearer remembered is not same as the real parameters, artificial immune theory was used to implement data processing and work status identification of the shearer, to carry out self-adaptive adjustment height of the cutter drum. The experimental results show that the shearer can match the change of the coal-seam boundary to achieve the self-adaptive adjustment height of the drum by use of artificial immune and memory cutting.

  8. THE MEDIATING EFFECT OF SELF-ESTEEM AND LEARNING ATTITUDE ON THE RELATIONSHIP BETWEEN MIDDLE SCHOOL STUDENTS’ PERCEIVED PARENTING STYLE AND SCHOOL LIFE ADJUSTMENT

    OpenAIRE

    Lee, Soo Youn

    2012-01-01

    This study examined the effect of middle school students’ perceived parenting style on their school life adjustment focusing on the mediation effect of selfesteem and learning attitude. The author carried out analysis of covariance structure using the 1st wave(2010) data of Korean Children and Youth Panel Survey(KCYPS) conducted by the National Youth Policy Institute and consists of 2,351 first year middle school students and their parents. The results indicated that when middle school studen...

  9. Pigeons' Discounting of Probabilistic and Delayed Reinforcers

    Science.gov (United States)

    Green, Leonard; Myerson, Joel; Calvert, Amanda L.

    2010-01-01

    Pigeons' discounting of probabilistic and delayed food reinforcers was studied using adjusting-amount procedures. In the probability discounting conditions, pigeons chose between an adjusting number of food pellets contingent on a single key peck and a larger, fixed number of pellets contingent on completion of a variable-ratio schedule. In the…

  10. Comparison of self-imposed delay of gratification between aggressive children and normal children%攻击行为儿童与普通儿童自我延迟满足的比较

    Institute of Scientific and Technical Information of China (English)

    王婷; 刘新民

    2011-01-01

    Objective To compare the differences of self-imposed delay of gratification and the characteristics of delay strategy between aggressive children and normal children, in order to provide evidence-based basis for aggressive children's education and behavior modification. Methods Using the classical self-imposed delay of gratification task to compare the ability of delay of gratification between 24 aggressive children and 24 class-, age-, gender-matched normal controls. Recording children' s delay behavior coding to compare their differences of delay strategy by using the time sampling observation method. The differences of purpose of delay of gratification was analyzed with χ2 test. The differences of their delay strategy was analyzed with the independent sample t -test. Results A significant difference was found between two groups on delay of gratification(χ2 = 13. 50, P <0.01). The controls showed more purpose during the waiting process than the aggressive children whose waiting was mostly without purpose or they simply gave up. The problem-solving strategy was hightlighted in the use of delay strategy for both the aggressive children(22. 38 ±11. 29) and the controls( 28. 21 ± 3. 05). The control group children used more problem-solving strategy(28.21 ±3.05) and self-control strategy(0. 71 ± 1.08) during the waiting task. Their level of delay strategy was higher than the aggressive groups ( (22. 38 ± 11. 29), (0. 13 ± 0. 45) ) (P < 0. 05). Conclusion The aggressive children are less capable of self-imposed delay of gratification,the purpose of behavior is weaker and the level of delay strategy is lower than normal children.%目的 比较攻击行为儿童与普通儿童自我延迟满足能力的差异及延迟策略的使用特点,以期为攻击行为儿童的发展教育和行为矫正提供循证依据.方法 采用经典的自我延迟满足实验比较24名攻击性儿童及24名班次、年龄、性别相匹配的普通儿童的延迟满足能

  11. Delay aversion but preference for large and rare rewards in two choice tasks: implications for the measurement of self-control parameters

    Directory of Open Access Journals (Sweden)

    Laviola Giovanni

    2006-06-01

    Full Text Available Abstract Background Impulsivity is defined as intolerance/aversion to waiting for reward. In intolerance-to-delay (ID protocols, animals must choose between small/soon (SS versus large/late (LL rewards. In the probabilistic discount (PD protocols, animals are faced with choice between small/sure (SS versus large/luck-linked (LLL rewards. It has been suggested that PD protocols also measure impulsivity, however, a clear dissociation has been reported between delay and probability discounting. Results Wistar adolescent rats (30- to 46-day-old were tested using either protocol in drug-free state. In the ID protocol, animals showed a marked shift from LL to SS reward when delay increased, and this despite adverse consequences on the total amount of food obtained. In the PD protocol, animals developed a stable preference for LLL reward, and maintained it even when SS and LLL options were predicted and demonstrated to become indifferent. We demonstrate a clear dissociation between these two protocols. In the ID task, the aversion to delay was anti-economical and reflected impulsivity. In the PD task, preference for large reward was maintained despite its uncertain delivery, suggesting a strong attraction for unitary rewards of great magnitude. Conclusion Uncertain delivery generated no aversion, when compared to delays producing an equivalent level of large-reward rarefaction. The PD task is suggested not to reflect impulsive behavior, and to generate patterns of choice that rather resemble the features of gambling. In summary, present data do indicate the need to interpret choice behavior in ID and PD protocols differently.

  12. The relationship of maternal separation anxiety and differentiation of self to children's separation anxiety and adjustment to kindergarten: a study in Druze families.

    Science.gov (United States)

    Peleg, Ora; Halaby, Einaya; Whaby, Ehlas

    2006-01-01

    The study explores relationships between preschoolers' separation anxiety and adjustment to kindergarten and their mothers' separation anxiety and levels of differentiation. It also examines the universality of several theoretical and clinical notions in Bowen's [Bowen, M. (1978). Family therapy in clinical practice. Aronson: New York] Family Systems Theory, by testing them in the Eastern-collectivist Israeli-Druze society. The main findings were positive correlations between mothers' and children's separation anxiety, as well as negative correlations between children's separation anxiety and maternal differentiation (for total DSI score and for emotional cutoff), so that lower differentiation and higher cutoff were associated with higher levels of anxiety. Another interesting finding was that teachers perceived the children of Druze working mothers as having more problematic behaviors than non-working mothers, pointing to poorer adjustment to kindergarten. Results suggest that a crucial balance of separation and closeness provides an optimal context for meeting the needs and promoting the healthy development of both mother and child. The present study is the first to indicate relations between mothers' differentiation and preschoolers' separation anxiety among Druze participants, partially supporting the universality of Bowen's theory "in all families and in all cultures" [Kerr, M., & Bowen, M. (1988). Family evaluation. New York: Norton, p. 202].

  13. 基于自适应临界状态的交通流运营安全评价%Safety Audit of Traffic Flows Based on Self-adjustable Critical State

    Institute of Scientific and Technical Information of China (English)

    蒋锐; 郭忠印; 孔令旗

    2011-01-01

    考虑实际交通流中车辆驾驶员的主观能动性,改进交通冲突技术机械式假设的不足,提出交通流自适应临界状态概念.构建车速差、减速度差和行程时间差等3个模型,量化交通流运营状态的自适应“能力”.以安全车头时距和实际车头时距的差值,评价实时交通流运营安全性.通过实验分析,结果表明基于自适应临界状态的运营风险与历史事故数之间存在良好的相关性.%Considering characteristic of driver subjective in real traffic flows, self-adjustable critical state is put forward firstly conquering mechanical-hypothesis weakness of traffic conflict. Based on differences of speed/deceleration/travel time, analysis models are found to appraise ability of self-adjustable traffic flows. In according to discrepancy between safety headway and realistic headway, traffic flow risk index is introduced to audit real-time traffic safety. Experiment results showed that the relation between traffic flow risk and historical accidents is well.

  14. Comorbidity structure of psychological disorders in the online e-PASS data as predictors of psychosocial adjustment measures: psychological distress, adequate social support, self-confidence, quality of life, and suicidal ideation.

    Science.gov (United States)

    Al-Asadi, Ali M; Klein, Britt; Meyer, Denny

    2014-10-28

    A relative newcomer to the field of psychology, e-mental health has been gaining momentum and has been given considerable research attention. Although several aspects of e-mental health have been studied, 1 aspect has yet to receive attention: the structure of comorbidity of psychological disorders and their relationships with measures of psychosocial adjustment including suicidal ideation in online samples. This exploratory study attempted to identify the structure of comorbidity of 21 psychological disorders assessed by an automated online electronic psychological assessment screening system (e-PASS). The resulting comorbidity factor scores were then used to assess the association between comorbidity factor scores and measures of psychosocial adjustments (ie, psychological distress, suicidal ideation, adequate social support, self-confidence in dealing with mental health issues, and quality of life). A total of 13,414 participants were assessed using a complex online algorithm that resulted in primary and secondary Diagnostic and Statistical Manual of Mental Disorders (Fourth Edition, Text Revision) diagnoses for 21 psychological disorders on dimensional severity scales. The scores on these severity scales were used in a principal component analysis (PCA) and the resulting comorbidity factor scores were related to 4 measures of psychosocial adjustments. A PCA based on 17 of the 21 psychological disorders resulted in a 4-factor model of comorbidity: anxiety-depression consisting of all anxiety disorders, major depressive episode (MDE), and insomnia; substance abuse consisting of alcohol and drug abuse and dependency; body image-eating consisting of eating disorders, body dysmorphic disorder, and obsessive-compulsive disorders; depression-sleep problems consisting of MDE, insomnia, and hypersomnia. All comorbidity factor scores were significantly associated with psychosocial measures of adjustment (P<.001). They were positively related to psychological distress and

  15. Adjusting to the Emergent

    DEFF Research Database (Denmark)

    Revsbæk, Line

    In her doctoral thesis Line Revsbaek explores newcomer innovation related to organizational entry processes in a changing organization. She introduces process philosophy and complexity theory to research on organizational socialization and newcomer innovation. The study challenges assumptions...... in standardized induction programs where newcomers are cast in roles as insecure novices needing to be “taught the ropes” of the organizational culture. Linked with this, it is suggested that the prevailing dichotomy of ‘newcomer assimilation’ versus ‘organizational accommodation’ is replaced with a notion...... of ‘adjusting to the emergent’. Newcomer innovation is portrayed as carrying a variety of possible significations, such as unintentional innovation effects of newcomer’s proactive self-socializing behavior; an inspirational basis for designing innovation-generating employee induction; ‘resonant instances...

  16. Measuring demand for flat water recreation using a two-stage/disequilibrium travel cost model with adjustment for overdispersion and self-selection

    Science.gov (United States)

    McKean, John R.; Johnson, Donn; Taylor, R. Garth

    2003-04-01

    An alternate travel cost model is applied to an on-site sample to estimate the value of flat water recreation on the impounded lower Snake River. Four contiguous reservoirs would be eliminated if the dams are breached to protect endangered Pacific salmon and steelhead trout. The empirical method applies truncated negative binomial regression with adjustment for endogenous stratification. The two-stage decision model assumes that recreationists allocate their time among work and leisure prior to deciding among consumer goods. The allocation of time and money among goods in the second stage is conditional on the predetermined work time and income. The second stage is a disequilibrium labor market which also applies if employers set work hours or if recreationists are not in the labor force. When work time is either predetermined, fixed by contract, or nonexistent, recreationists must consider separate prices and budgets for time and money.

  17. Test Anxiety and Academic Delay of Gratification

    Science.gov (United States)

    Bembenutty, Hefer

    2009-01-01

    The present study examined the relationship between college students' willingness to delay gratification, motivation, self-regulation of learning, and their level of test anxiety (N = 364). Academic delay of gratification refers to students' postponement of immediately available opportunities to satisfy impulses in favor of pursuing academic…

  18. The Prospect of Orem Self-care Theory to Delay the Degradation Reaction of Parkinson's Disease%O rem 自护理论消除帕金森退化反应的应用前景

    Institute of Scientific and Technical Information of China (English)

    李连红; 曲晓彤; 尹安春

    2014-01-01

    由于帕金森的发病率逐年上升,并对患者生理、心理、社会等方面造成影响,本文对国内外O rem自护理论消除退化反应的相关文献以及在帕金森疾病中的应用前景进行报道。使用检索电子数据库以及查阅期刊文献。结果发现随着疾病的进展,帕金森会诱发机体一系列的退化反应,这严重影响了患者的生理、心理以及生活质量。大量文献报道了O rem自护理论在消除高血压、糖尿病等慢性疾病退化反应中的应用,但很少文献提及O rem自护理论在消除帕金森退化反应中的应用。笔者认为O rem自护理论有望在消除帕金森退化反应中应用。%It has showed an upward trend year by year that the Parkinson's disease lead to function impairment and the function impairment plays an important role in patients .In this study we reviewed the Orem self-care theory ,degradation reaction and their relationship of the patient to Parkinson's disease at home and abroad .This article searched electronic databases and consult journal literature .The Parkinson's disease resulted in different degrees of degradation reaction , which affected people's physiology ,psychosocial adaptation and quality of life .It is found that the Orem self-care theory has been used to delay the degradation reaction of hypertension and diabetes . However ,it is seldom reported that the Orem self-care theory would has been applied to delay the degradation reaction of Parkinson's disease .It is expected that the Orem self-care theory would be used to delay the degradation reaction of Parkinson's disease .

  19. Adjustment, Pollyannaism, and Attraction to Close Relationships

    Science.gov (United States)

    Scott, William A.; Peterson, Christopher

    1975-01-01

    The following two main hypotheses were tested: a) personal adjustment is associated with liking for close, personal relationships; and b) apparent adjustment is a manifestation of a test-taking style of favorable self-presentation. Data obtained from college students in three cultures tended to support the first interpretation best and the second…

  20. Facilitating tolerance of delayed reinforcement during functional communication training.

    Science.gov (United States)

    Fisher, W W; Thompson, R H; Hagopian, L P; Bowman, L G; Krug, A

    2000-01-01

    Few clinical investigations have addressed the problem of delayed reinforcement. In this investigation, three individuals whose destructive behavior was maintained by positive reinforcement were treated using functional communication training (FCT) with extinction (EXT). Next, procedures used in the basic literature on delayed reinforcement and self-control (reinforcer delay fading, punishment of impulsive responding, and provision of an alternative activity during reinforcer delay) were used to teach participants to tolerate delayed reinforcement. With the first case, reinforcer delay fading alone was effective at maintaining low rates of destructive behavior while introducing delayed reinforcement. In the second case, the addition of a punishment component reduced destructive behavior to near-zero levels and facilitated reinforcer delay fading. With the third case, reinforcer delay fading was associated with increases in masturbation and head rolling, but prompting and praising the individual for completing work during the delay interval reduced all problem behaviors and facilitated reinforcer delay fading.

  1. Delayed childbearing.

    Science.gov (United States)

    Francis, H H

    1985-06-01

    In many Western nations, including England and Wales, Sweden, and the US, there is a current trend towards delayed childbearing because of women's pursuit of a career, later marriage, a longer interval between marriage and the 1st birth, and the increasing number of divorcees having children in a 2nd marriage. Wives of men in social classes I and II in England and Wales are, on average, having their 1st child at 27.9 years, 1.6 years later than in 1973, and in social classes IV and V, 1.0 years later than in 1973, at a mean age of 23.7 years. Consequently, the total period fertility rate for British women aged 30-34 years, 35-39 years, and 40 and over increased by 4%, 2%, and 4%, respectively, between 1982-83, in contrast to reductions of 2% and 3%, respectively, in the 15-19 year and 20-24 year age groups, with the 25-29-year-olds remaining static. The average maternal mortality for all parties in England and Wales during 1976-78 was 106/million for adolescents, 70.4/million for 20-24 year-olds, and 1162/million for those aged 40 years and older. The specific obstetric and allied conditions which increase with age are the hypertensive diseases of pregnancy, hemorrhage, pulmonary embolism, abortion, cardiac disease, caesarean section, ruptured uterus, and amniotic fluid embolism. The Swedish Medical Birth Registry of all live births and perinatal deaths since 1973 has shown that the risk of late fetal death is significantly greater in women aged 30-39 years than in those of the same parity and gravidity aged 20-24 years. The risk of giving birth to low birth weight babies preterm and at term and of premature labor are similarly increased. The early neonatal death rate also was increased for primigravidas and nulliparas in the 30-39 year age group but not in parous women. This is, in part, due to the rise in incidence of fetal abnormalities with advancing maternal age because of chromosomal and nonchromosomal anomalies. These also appear to be the cause of the

  2. 大学生心理问题的预防与自我调节%Prevention and Self-adjusting of College Sudents' Psychological Problems

    Institute of Scientific and Technical Information of China (English)

    肖红香

    2011-01-01

    近年来,大学生心理问题已成为高校和社会关注的重要问题之一,大学校园内,学生不假出走、精神失常、非正常死亡现象不断增加,给高校安全稳定工作造成了严重的影响.本文通过对大学生心理特点及影响大学生心理健康的因素的分析,提出预防与自我调节的具体措施,为高校大学生心理健康教育工作提供参考.%In recent years, university students'mental problems have become one of the important questions, which concerned by institutions of higher education and social. In university campus, the growing phenomenon of students' absence without leave, mental disorders and premature death has resulted in serious effect on the universities'safe and stable work. This paper proposed specific measures for prevention and self-regulation based on the analysis of university students' psychological characteristics and mental health factors of affecting university students, and provided reference for university students'education work of mental health.

  3. Anticipatory postural adjustments and anticipatory synergy adjustments: preparing to a postural perturbation with predictable and unpredictable direction.

    Science.gov (United States)

    Piscitelli, Daniele; Falaki, Ali; Solnik, Stanislaw; Latash, Mark L

    2017-03-01

    We explored two aspects of feed-forward postural control, anticipatory postural adjustments (APAs) and anticipatory synergy adjustments (ASAs) seen prior to self-triggered unloading with known and unknown direction of the perturbation. In particular, we tested two main hypotheses predicting contrasting changes in APAs and ASAs. The first hypothesis predicted no major changes in ASAs. The second hypothesis predicted delayed APAs with predominance of co-contraction patterns when perturbation direction was unknown. Healthy subjects stood on the force plate and held a bar with two loads acting in the forward and backward directions. They pressed a trigger that released one of the loads causing a postural perturbation. In different series, the direction of the perturbation was either known (the same load released in all trials) or unknown (the subjects did not know which of the two loads would be released). Surface electromyograms were recorded and used to quantify APAs, synergies stabilizing center of pressure coordinate (within the uncontrolled manifold hypothesis), and ASA. APAs and ASAs were seen in all conditions. APAs were delayed, and predominance of co-contraction patterns was seen under the conditions with unpredictable direction of perturbation. In contrast, no significant changes in synergies and ASAs were seen. Overall, these results show that feed-forward control of vertical posture has two distinct components, reflected in APAs and ASAs, which show qualitatively different adjustments with changes in predictability of the direction of perturbation. These results are interpreted within the recently proposed hierarchical scheme of the synergic control of motor tasks. The observations underscore the complexity of the feed-forward postural control, which involves separate changes in salient performance variables (such as coordinate of the center of pressure) and in their stability properties.

  4. Anchoring and Adjustment during Social Inferences

    Science.gov (United States)

    Tamir, Diana I.; Mitchell, Jason P.

    2013-01-01

    Simulation theories of social cognition suggest that people use their own mental states to understand those of others--particularly similar others. However, perceivers cannot rely solely on self-knowledge to understand another person; they must also correct for differences between the self and others. Here we investigated serial adjustment as a…

  5. The Mediating Role of Psychological Adjustment between Peer Victimization and Social Adjustment in Adolescence

    Directory of Open Access Journals (Sweden)

    Eva M. Romera

    2016-11-01

    Full Text Available There is extensive scientific evidence of the serious psychological and social effects that peer victimization may have on students, among them internalizing problems such as anxiety or negative self-esteem, difficulties related to low self-efficacy and lower levels of social adjustment. Although a direct relationship has been observed between victimization and these effects, it has not yet been analyzed whether there is a relationship of interdependence between all these measures of psychosocial adjustment. The aim of this study was to examine the relationship between victimization and difficulties related to social adjustment among high school students. To do so, various explanatory models were tested to determine whether psychological adjustment (negative self-esteem, social anxiety and social self-efficacy could play a mediating role in this relationship, as suggested by other studies on academic adjustment. The sample comprised 2060 Spanish high school students (47.9% girls; mean age = 14.34. The instruments used were the scale of victimization from European Bullying Intervention Project Questionnaire, the negative scale from Rosenberg Self-Esteem Scale, Social Anxiety Scale for Adolescents and a general item about social self-efficacy, all of them self-reports. Structural equation modeling was used to analyze the data. The results confirmed the partial mediating role of negative self-esteem, social anxiety and social self-efficacy between peer victimization and social adjustment and highlight the importance of empowering victimized students to improve their self-esteem and self-efficacy and prevent social anxiety. Such problems lead to the avoidance of social interactions and social reinforcement, thus making it difficult for these students to achieve adequate social adjustment.

  6. Adjusting to Chronic Health Conditions.

    Science.gov (United States)

    Helgeson, Vicki S; Zajdel, Melissa

    2017-01-03

    Research on adjustment to chronic disease is critical in today's world, in which people are living longer lives, but lives are increasingly likely to be characterized by one or more chronic illnesses. Chronic illnesses may deteriorate, enter remission, or fluctuate, but their defining characteristic is that they persist. In this review, we first examine the effects of chronic disease on one's sense of self. Then we review categories of factors that influence how one adjusts to chronic illness, with particular emphasis on the impact of these factors on functional status and psychosocial adjustment. We begin with contextual factors, including demographic variables such as sex and race, as well as illness dimensions such as stigma and illness identity. We then examine a set of dispositional factors that influence chronic illness adjustment, organizing these into resilience and vulnerability factors. Resilience factors include cognitive adaptation indicators, personality variables, and benefit-finding. Vulnerability factors include a pessimistic attributional style, negative gender-related traits, and rumination. We then turn to social environmental variables, including both supportive and unsupportive interactions. Finally, we review chronic illness adjustment within the context of dyadic coping. We conclude by examining potential interactions among these classes of variables and outlining a set of directions for future research.

  7. Delayed Equation for Charged Rigid Nonrelativistic Ball

    CERN Document Server

    Vlasov, A A

    2002-01-01

    Simple expression for self-force acting on radiating rigid charged ball is derived (Sommerfeld ball). It is shown that appropriate delayed equation of motion has solutions in general differ from that for Sommerfeld sphere - there are no "radiationless" solutions, but there are oscillating without damping solutions though self-force has nonzero value.

  8. Annual Adjustment Factors

    Data.gov (United States)

    Department of Housing and Urban Development — The Department of Housing and Urban Development establishes the rent adjustment factors - called Annual Adjustment Factors (AAFs) - on the basis of Consumer Price...

  9. Masculinity, medical mistrust, and preventive health services delays among community-dwelling African-American men.

    Science.gov (United States)

    Hammond, Wizdom Powell; Matthews, Derrick; Mohottige, Dinushika; Agyemang, Amma; Corbie-Smith, Giselle

    2010-12-01

    The contribution of masculinity to men's healthcare use has gained increased public health interest; however, few studies have examined this association among African-American men, who delay healthcare more often, define masculinity differently, and report higher levels of medical mistrust than non-Hispanic White men. To examine associations between traditional masculinity norms, medical mistrust, and preventive health services delays. A cross-sectional analysis using data from 610 African-American men age 20 and older recruited primarily from barbershops in the North, South, Midwest, and West regions of the U.S. (2003-2009). Independent variables were endorsement of traditional masculinity norms around self-reliance, salience of traditional masculinity norms, and medical mistrust. Dependent variables were self-reported delays in three preventive health services: routine check-ups, blood pressure screenings, and cholesterol screenings. We controlled for socio-demography, healthcare access, and health status. After final adjustment, men with a greater endorsement of traditional masculinity norms around self-reliance (OR: 0.77; 95% CI: 0.60-0.98) were significantly less likely to delay blood pressure screening. This relationship became non-significant when a longer BP screening delay interval was used. Higher levels of traditional masculinity identity salience were associated with a decreased likelihood of delaying cholesterol screening (OR: 0.62; 95% CI: 0.45-0.86). African-American men with higher medical mistrust were significantly more likely to delay routine check-ups (OR: 2.64; 95% CI: 1.34-5.20), blood pressure (OR: 3.03; 95% CI: 1.45-6.32), and cholesterol screenings (OR: 2.09; 95% CI: 1.03-4.23). Contrary to previous research, higher traditional masculinity is associated with decreased delays in African-American men's blood pressure and cholesterol screening. Routine check-up delays are more attributable to medical mistrust. Building on African-American men

  10. On-Chip Built-in Jitter Measurement Circuit for PLL Based on Duty-Cycle Modulation Vernier Delay Line

    Institute of Scientific and Technical Information of China (English)

    YU Fei; Chung Len Lee; ZHANG Jingkai

    2007-01-01

    Phase-locked loops (PLLs) are essential wherever a local event is synchronized with a periodic external event. They are utilized as on-chip clock frequency generators to synthesize a low skew and higher internal frequency clock from an external lower frequency signal and its characterization and measurement have recently been calling for more and more attention. In this paper, a built-in on-chip circuit for measuring jitter of PLL based on a duty cycle modulation vernier delay line is proposed and demonstrated. The circuit employs two delay lines to measure the timing difference and transform the difference signal into digital words. The vernier lines are composed of delay cells whose duty cycle can be adjusted by a feedback voltage. It enables the circuit to have a self calibration capability which eliminates the mismatch problem caused by the process variation.

  11. Fruit fly optimization algorithm with self-adapting adjustment of itera-tion step value%迭代步进值自适应调整的果蝇优化算法

    Institute of Scientific and Technical Information of China (English)

    常鹏; 李树荣; 葛玉磊; 卢松林

    2016-01-01

    针对传统果蝇优化算法(FOA)收敛精度不高和易陷入局部最优的缺点,提出了一种迭代步进值自适应调整的果蝇优化算法(FOAMR).在该算法中,引入了果蝇群体速度进化因子和聚集度因子,并将迭代步进值表示为以上2个参数的函数同时定义自适应调整因子.在每次迭代时,算法根据当前果蝇群体速度进化因子和聚集度因子动态调整步进值的大小并通过自适应调整因子动态调整搜索距离的大小.对典型函数的测试结果表明,FOAMR比FOA具有更好的全局搜索能力,同时收敛速度、收敛精度明显提高.%In order to overcome the problems of low convergence precision and easily relapsing into local extremum in basic Fruit fly Optimization Algorithm(FOA), an improved FOA called self-adapting adjustment of the iteration step value FOA(FOAMR)is proposed. The evolution speed factor and aggregation degree factor of the FOA are introduced in this new algorithm and the iteration step value R is formulated as a function of these two factors and adaptive adjustment factor is newly defined. At each iteration process, the iteration step value R can be changed dynamically based on evolution speed factor and aggregation degree factor and the searching distance changes with the variation of the adaptive adjustment factor. The experimental results show that the new algorithm has the advantages of better global searching ability, faster conver-gence and more precise convergence.

  12. Tunable delay time and Hartman effect in graphene magnetic barriers

    Energy Technology Data Exchange (ETDEWEB)

    Ban, Yue; Wang, Lin-Jun [School of Materials Science and Engineering, Shanghai University, Shanghai 200444 (China); Chen, Xi, E-mail: xchen@shu.edu.cn [Department of Physics, Shanghai University, Shanghai 200444 (China)

    2015-04-28

    Tunable group delay and Hartman effect have been investigated for massless Dirac electrons in graphene magnetic barriers. In the presence of magnetic field, dwell time is found to be equal to net group delay plus the group delay contributing from the lateral shifts. The group delay times are discussed in both cases of normal and oblique incidence, to clarify the nature of Hartman effect. In addition, the group delay in transmission can be modulated from subluminality to superluminality by adjusting the magnetic field, which may also lead to potential applications in graphene-based microelectronics.

  13. Assessment of the fracture resistance of teeth instrumented using 2 rotary and 2 reciprocating files versus the Self-Adjusting File (SAF: An ex vivo comparative study on mandibular premolars

    Directory of Open Access Journals (Sweden)

    Ajinkya M Pawar

    2016-01-01

    Full Text Available Aim: Current ex vivo study compared fracture resistance of teeth instrumented using 5 endodontic files, filled with Gutta-percha and AH Plus. Materials and Methods: Sixty freshly extracted, single-rooted mandibular premolars were acquired and decoronated to obtain 15 mm segments. These samples were randomly divided into six groups (n = 10. Group 1 served as the control containing untreated samples (without instrumentation or filling. In Groups 2-6, samples were instrumented using rotary (Universal ProTaper and Revo-S, reciprocating (WaveOne and RECIPROC; , and self-adjusting file (SAF, respectively. Following instrumentation, the samples were filled by lateral compaction with Gutta-percha and AH Plus. A week later, after the sealer was completely set, a vertical load was applied to the specimen′s canal in each group until fracture. The loads required for fracture were recorded, and statistical analysis was performed. Results: The mean fracture load differed significantly among the groups (P 0.05 and was significantly higher than that of the 2 rotary and reciprocating groups (P < 0.01. Conclusion: The samples instrumented by the SAF exhibited a better fracture resistance.

  14. The efficacy of the Self-Adjusting File versus WaveOne in removal of root filling residue that remains in oval canals after the use of ProTaper retreatment files: A cone-beam computed tomography study

    Directory of Open Access Journals (Sweden)

    Ajinkya M Pawar

    2016-01-01

    Full Text Available Aim: The current ex vivo study compared the efficacy of removing root fillings using ProTaper retreatment files followed by either WaveOne reciprocating file or the Self-Adjusting File (SAF. Materials and Methods: Forty maxillary canines with single oval root canal were selected and sectioned to obtain 18-mm root segments. The root canals were instrumented with WaveOne primary files, followed by obturation using warm lateral compaction, and the sealer was allowed to fully set. The teeth were then divided into two equal groups (N = 20. Initial removal of the bulk of root filling material was performed with ProTaper retreatment files, followed by either WaveOne files (Group 1 or SAF (Group 2. Endosolv R was used as a gutta-percha softener. Preoperative and postoperative high-resolution cone-beam computed tomography (CBCT was used to measure the volume of the root filling residue that was left after the procedure. Statistical analysis was performed using t-test. Results: The mean volume of root filling residue in Group 1 was 9.4 (±0.5 mm 3 , whereas in Group 2 the residue volume was 2.6 (±0.4 mm 3 , (P < 0.001; t-test. Conclusions: When SAF was used after ProTaper retreatment files, significantly less root filling residue was left in the canals compared to when WaveOne was used.

  15. After Divorce: Personality Factors Related to the Process of Adjustment.

    Science.gov (United States)

    Thomas, Sandra Paul

    1982-01-01

    Considered personality variables related to postdivorce adjustment using a sample of 58 females and 31 males. Found persons with the best adjustment scored significantly higher on dominance/assertiveness, self-assurance, intelligence, creativity/imagination, social boldness, liberalism, self-sufficiency, ego strength and tranquility. (Author/JAC)

  16. Rationale of the BREAst cancer e-healTH [BREATH] multicentre randomised controlled trial: An Internet-based self-management intervention to foster adjustment after curative breast cancer by decreasing distress and increasing empowerment

    Directory of Open Access Journals (Sweden)

    van den Berg Sanne W

    2012-09-01

    Full Text Available Abstract Background After completion of curative breast cancer treatment, patients go through a transition from patient to survivor. During this re-entry phase, patients are faced with a broad range of re-entry topics, concerning physical and emotional recovery, returning to work and fear of recurrence. Standard and easy-accessible care to facilitate this transition is lacking. In order to facilitate adjustment for all breast cancer patients after primary treatment, the BREATH intervention is aimed at 1 decreasing psychological distress, and 2 increasing empowerment, defined as patients’ intra- and interpersonal strengths. Methods/design The non-guided Internet-based self-management intervention is based on cognitive behavioural therapy techniques and covers four phases of recovery after breast cancer (Looking back; Emotional processing; Strengthening; Looking ahead. Each phase of the fully automated intervention has a fixed structure that targets consecutively psychoeducation, problems in everyday life, social environment, and empowerment. Working ingredients include Information (25 scripts, Assignment (48 tasks, Assessment (10 tests and Video (39 clips extracted from recorded interviews. A non-blinded, multicentre randomised controlled, parallel-group, superiority trial will be conducted to evaluate the effectiveness of the BREATH intervention. In six hospitals in the Netherlands, a consecutive sample of 170 will be recruited of women who completed primary curative treatment for breast cancer within 4 months. Participants will be randomly allocated to receive either usual care or usual care plus access to the online BREATH intervention (1:1. Changes in self-report questionnaires from baseline to 4 (post-intervention, 6 and 10 months will be measured. Discussion The BREATH intervention provides a psychological self-management approach to the disease management of breast cancer survivors. Innovative is the use of patients’ own strengths

  17. The effect of accuracy motivation on anchoring and adjustment: do people adjust from provided anchors?

    Science.gov (United States)

    Simmons, Joseph P; LeBoeuf, Robyn A; Nelson, Leif D

    2010-12-01

    Increasing accuracy motivation (e.g., by providing monetary incentives for accuracy) often fails to increase adjustment away from provided anchors, a result that has led researchers to conclude that people do not effortfully adjust away from such anchors. We challenge this conclusion. First, we show that people are typically uncertain about which way to adjust from provided anchors and that this uncertainty often causes people to believe that they have initially adjusted too far away from such anchors (Studies 1a and 1b). Then, we show that although accuracy motivation fails to increase the gap between anchors and final estimates when people are uncertain about the direction of adjustment, accuracy motivation does increase anchor-estimate gaps when people are certain about the direction of adjustment, and that this is true regardless of whether the anchors are provided or self-generated (Studies 2, 3a, 3b, and 5). These results suggest that people do effortfully adjust away from provided anchors but that uncertainty about the direction of adjustment makes that adjustment harder to detect than previously assumed. This conclusion has important theoretical implications, suggesting that currently emphasized distinctions between anchor types (self-generated vs. provided) are not fundamental and that ostensibly competing theories of anchoring (selective accessibility and anchoring-and-adjustment) are complementary.

  18. The Right Delay

    NARCIS (Netherlands)

    Datadien, A.H.R.; Haselager, W.F.G.; Sprinkhuizen-Kuyper, I.G.

    2011-01-01

    Axonal conduction delays should not be ignored in simulations of spiking neural networks. Here it is shown that by using axonal conduction delays, neurons can display sensitivity to a specific spatio-temporal spike pattern. By using delays that complement the firing times in a pattern, spikes can ar

  19. ADJUSTABLE CHIP HOLDER

    DEFF Research Database (Denmark)

    2009-01-01

    An adjustable microchip holder for holding a microchip is provided having a plurality of displaceable interconnection pads for connecting the connection holes of a microchip with one or more external devices or equipment. The adjustable microchip holder can fit different sizes of microchips with ...

  20. Benchmarking Judgmentally Adjusted Forecasts

    NARCIS (Netherlands)

    Ph.H.B.F. Franses (Philip Hans); L.P. de Bruijn (Bert)

    2017-01-01

    textabstractMany publicly available macroeconomic forecasts are judgmentally adjusted model-based forecasts. In practice, usually only a single final forecast is available, and not the underlying econometric model, nor are the size and reason for adjustment known. Hence, the relative weights given

  1. Benchmarking judgmentally adjusted forecasts

    NARCIS (Netherlands)

    Ph.H.B.F. Franses (Philip Hans); L.P. de Bruijn (Bert)

    2015-01-01

    markdownabstractMany publicly available macroeconomic forecasts are judgmentally-adjusted model-based forecasts. In practice usually only a single final forecast is available, and not the underlying econometric model, nor are the size and reason for adjustment known. Hence, the relative weights

  2. Benchmarking judgmentally adjusted forecasts

    NARCIS (Netherlands)

    Ph.H.B.F. Franses (Philip Hans); L.P. de Bruijn (Bert)

    2015-01-01

    markdownabstractMany publicly available macroeconomic forecasts are judgmentally-adjusted model-based forecasts. In practice usually only a single final forecast is available, and not the underlying econometric model, nor are the size and reason for adjustment known. Hence, the relative weights give

  3. An Analytical Delay Model

    Institute of Scientific and Technical Information of China (English)

    MIN Yinghua; LI Zhongcheng

    1999-01-01

    Delay consideration has been a majorissue in design and test of high performance digital circuits. Theassumption of input signal change occurring only when all internal nodesare stable restricts the increase of clock frequency. It is no longertrue for wave pipelining circuits. However, previous logical delaymodels are based on the assumption. In addition, the stable time of arobust delay test generally depends on the longest sensitizable pathdelay. Thus, a new delay model is desirable. This paper explores thenecessity first. Then, Boolean process to analytically describe thelogical and timing behavior of a digital circuit is reviewed. Theconcept of sensitization is redefined precisely in this paper. Based onthe new concept of sensitization, an analytical delay model isintroduced. As a result, many untestable delay faults under thelogical delay model can be tested if the output waveforms can be sampledat more time points. The longest sensitizable path length is computedfor circuit design and delay test.

  4. Task-related and person-related variables influence the effect of low back pain on anticipatory postural adjustments.

    Science.gov (United States)

    Jacobs, Jesse V; Lyman, Courtney A; Hitt, Juvena R; Henry, Sharon M

    2017-08-01

    People with low back pain exhibit altered postural coordination that has been suggested as a target for treatment, but heterogeneous presentation has rendered it difficult to identify appropriate candidates and protocols for such treatments. This study evaluated the associations of task-related and person-related factors with the effect of low back pain on anticipatory postural adjustments. Thirteen subjects with and 13 without low back pain performed seated, rapid arm flexion in self-initiated and cued conditions. Mixed-model ANOVA were used to evaluate group and condition effects on APA onset latencies of trunk muscles, arm-raise velocity, and pre-movement cortical potentials. These measures were evaluated for correlation with pain ratings, Fear Avoidance Beliefs Questionnaire scores, and Modified Oswestry Questionnaire scores. Delayed postural adjustments of subjects with low back pain were greater in the cued condition than in the self-initiated condition. The group with low back pain exhibited larger-amplitude cortical potentials than the group without pain, but also significantly slower arm-raise velocities. With arm-raise velocity as a covariate, the effect of low back pain remained significant for the latencies of postural adjustments but not for cortical potentials. Latencies of the postural adjustments significantly correlated with Oswestry and Fear Avoidance Beliefs scores. Delayed postural adjustments with low back pain appear to be influenced by cueing of movement, pain-related disability and fear of activity. These results highlight the importance of subject characteristics, task condition, and task performance when comparing across studies or when developing treatment of people with low back pain. Copyright © 2017 Elsevier B.V. All rights reserved.

  5. 论新时期高校辅导员的角色失调与自我调适%On the Role Maladjustment and Self-adjustment of Col-lege Counselors in the New Period

    Institute of Scientific and Technical Information of China (English)

    汪华丽

    2015-01-01

    高校辅导员是大学生思想政治教育的骨干。自新中国成立以来,因内外条件的变化,高校辅导员角色发生了变迁,不断产生新的角色要求。当前,高校辅导员在角色扮演中存在角色不清、角色冲突、角色超载、角色缺位与越位等角色失调现象。高校辅导员必须从教育多元化、自主化,管理规范化、层次化,服务标准化、人性化,工作职业化、专业化等四个方面来进行角色的自我调适,突破角色扮演中的困境,实现多重角色之间的协调发展。%College counselors are the backbone of ideological and political education of college students. Since the establishment of the new China, because of the changes of the internal and exter-nal conditions, the role of college counselors has changed and new role requirements have been constantly proposed. Presently, in role playing, college counselors have role maladjustment, such as role ambiguity, role conflict, role overload, role absence and offside. From such four aspects as the diversification and inde-pendency of education, the standardization and layering of man-agement, the standardization and humanization of service, the professionalization and specialization of work, college counselors conduct the self-adjustment of their role, thus breaking through the predicament of role playing and realizing the coordinated de-velopment of multiple roles.

  6. 柴油机轨压控制中的应用%Application of Fuzzy Self-adjusting PID Control in Feedforward in High-pressure Common Rail Diesel Engine Rail Pressure Controlling

    Institute of Scientific and Technical Information of China (English)

    安煜清; 王景成; 张奕妍

    2012-01-01

    The paper analyzes and designs fuzzy PID controller already mass produced by Bosch, Nippondenso Co., Ltd., Delphy and so on. It adds fuzzy feedforward control and suggests optimized controlling strategies and method to realize. By on-line self-adjusting to PID parameters, the optimum control to common rail pressure stability and responsiveness is realized in different diesel conditions. The simulation result and bench test result show that the introduction of fuzzy feedforward control can greatly improve responsiveness and robustness of rail pressure in transient condition and not affect negatively stability of rail pressure in steady state condition.%分析设计了已经被博世、电装、德尔福等公司量产化的模糊PID控制器,增加了模糊化前馈控制环节,给出了优化的控制策略和实现方法。通过对PID参数的在线白适应整定,实现了在不同柴油机工况下对共轨压力稳定性响应性的最佳控制。仿真结果和台架实验结果表明:模糊化前馈控制环节的引入可以显著提高瞬态工况下轨压的响应性及鲁棒性,并且不对稳态工况时轨压的稳定性产生负面影响。

  7. Towards Adjustable Autonomy for the Real World

    CERN Document Server

    Pynadath, D V; Tambe, M; 10.1613/jair.1037

    2011-01-01

    Adjustable autonomy refers to entities dynamically varying their own autonomy, transferring decision-making control to other entities (typically agents transferring control to human users) in key situations. Determining whether and when such transfers-of-control should occur is arguably the fundamental research problem in adjustable autonomy. Previous work has investigated various approaches to addressing this problem but has often focused on individual agent-human interactions. Unfortunately, domains requiring collaboration between teams of agents and humans reveal two key shortcomings of these previous approaches. First, these approaches use rigid one-shot transfers of control that can result in unacceptable coordination failures in multiagent settings. Second, they ignore costs (e.g., in terms of time delays or effects on actions) to an agent's team due to such transfers-of-control. To remedy these problems, this article presents a novel approach to adjustable autonomy, based on the notion of a transfer-of...

  8. Modeling distributed axonal delays in mean-field brain dynamics

    Science.gov (United States)

    Roberts, J. A.; Robinson, P. A.

    2008-11-01

    The range of conduction delays between connected neuronal populations is often modeled as a single discrete delay, assumed to be an effective value averaging over all fiber velocities. This paper shows the effects of distributed delays on signal propagation. A distribution acts as a linear filter, imposing an upper frequency cutoff that is inversely proportional to the delay width. Distributed thalamocortical and corticothalamic delays are incorporated into a physiologically based mean-field model of the cortex and thalamus to illustrate their effects on the electroencephalogram (EEG). The power spectrum is acutely sensitive to the width of the thalamocortical delay distribution, and more so than the corticothalamic distribution, because all input signals must travel along the thalamocortical pathway. This imposes a cutoff frequency above which the spectrum is overly damped. The positions of spectral peaks in the resting EEG depend primarily on the distribution mean, with only weak dependences on distribution width. Increasing distribution width increases the stability of fixed point solutions. A single discrete delay successfully approximates a distribution for frequencies below a cutoff that is inversely proportional to the delay width, provided that other model parameters are moderately adjusted. A pair of discrete delays together having the same mean, variance, and skewness as the distribution approximates the distribution over the same frequency range without needing parameter adjustment. Delay distributions with large fractional widths are well approximated by low-order differential equations.

  9. Family Adjustment to Aphasia

    Science.gov (United States)

    ... Public / Speech, Language and Swallowing / Disorders and Diseases Family Adjustment to Aphasia Richard S. was a senior manager ... It also presents a great challenge to the family. There may be tension among family members and ...

  10. Remotely Adjustable Hydraulic Pump

    Science.gov (United States)

    Kouns, H. H.; Gardner, L. D.

    1987-01-01

    Outlet pressure adjusted to match varying loads. Electrohydraulic servo has positioned sleeve in leftmost position, adjusting outlet pressure to maximum value. Sleeve in equilibrium position, with control land covering control port. For lowest pressure setting, sleeve shifted toward right by increased pressure on sleeve shoulder from servovalve. Pump used in aircraft and robots, where hydraulic actuators repeatedly turned on and off, changing pump load frequently and over wide range.

  11. Weighted triangulation adjustment

    Science.gov (United States)

    Anderson, Walter L.

    1969-01-01

    The variation of coordinates method is employed to perform a weighted least squares adjustment of horizontal survey networks. Geodetic coordinates are required for each fixed and adjustable station. A preliminary inverse geodetic position computation is made for each observed line. Weights associated with each observed equation for direction, azimuth, and distance are applied in the formation of the normal equations in-the least squares adjustment. The number of normal equations that may be solved is twice the number of new stations and less than 150. When the normal equations are solved, shifts are produced at adjustable stations. Previously computed correction factors are applied to the shifts and a most probable geodetic position is found for each adjustable station. Pinal azimuths and distances are computed. These may be written onto magnetic tape for subsequent computation of state plane or grid coordinates. Input consists of punch cards containing project identification, program options, and position and observation information. Results listed include preliminary and final positions, residuals, observation equations, solution of the normal equations showing magnitudes of shifts, and a plot of each adjusted and fixed station. During processing, data sets containing irrecoverable errors are rejected and the type of error is listed. The computer resumes processing of additional data sets.. Other conditions cause warning-errors to be issued, and processing continues with the current data set.

  12. Weighted triangulation adjustment

    Science.gov (United States)

    Anderson, Walter L.

    1969-01-01

    The variation of coordinates method is employed to perform a weighted least squares adjustment of horizontal survey networks. Geodetic coordinates are required for each fixed and adjustable station. A preliminary inverse geodetic position computation is made for each observed line. Weights associated with each observed equation for direction, azimuth, and distance are applied in the formation of the normal equations in-the least squares adjustment. The number of normal equations that may be solved is twice the number of new stations and less than 150. When the normal equations are solved, shifts are produced at adjustable stations. Previously computed correction factors are applied to the shifts and a most probable geodetic position is found for each adjustable station. Pinal azimuths and distances are computed. These may be written onto magnetic tape for subsequent computation of state plane or grid coordinates. Input consists of punch cards containing project identification, program options, and position and observation information. Results listed include preliminary and final positions, residuals, observation equations, solution of the normal equations showing magnitudes of shifts, and a plot of each adjusted and fixed station. During processing, data sets containing irrecoverable errors are rejected and the type of error is listed. The computer resumes processing of additional data sets.. Other conditions cause warning-errors to be issued, and processing continues with the current data set.

  13. Delayed emergence after anesthesia.

    Science.gov (United States)

    Tzabazis, Alexander; Miller, Christopher; Dobrow, Marc F; Zheng, Karl; Brock-Utne, John G

    2015-06-01

    In most instances, delayed emergence from anesthesia is attributed to residual anesthetic or analgesic medications. However, delayed emergence can be secondary to unusual causes and present diagnostic dilemmas. Data from clinical studies is scarce and most available published material is comprised of case reports. In this review, we summarize and discuss less common and difficult to diagnose reasons for delayed emergence and present cases from our own experience or reference published case reports/case series. The goal is to draw attention to less common reasons for delayed emergence, identify patient populations that are potentially at risk and to help anesthesiologists identifying a possible cause why their patient is slow to wake up.

  14. Internet end-to-end delay dynamics

    Institute of Scientific and Technical Information of China (English)

    Zhu Changhua; Pei Changxing; Li Jiandong; Chen Nan; Yi Yunhui

    2006-01-01

    End-to-end delay is one of the most important characteristics of Internet end-to-end packet dynamics, which can be applied to quality of services (QoS) management, service level agreement (SLA) management, congestion control algorithm development, etc. Nonstationarity and nonlinearity are found by the analysis of various delay series measured from different links. The fact that different types of links have different degree of Self-Similarity is also obtained. By constructing appropriate network architecture and neural functions, functional networks can be used to model the Internet end-to-end nonlinear delay time series. Furthermore, by using adaptive parameter studying algorithm, the nonstationarity can also be well modeled. The numerical results show that the provided functional network architecture and adaptive algorithm can precisely characterize the Internet end-to-end delay dynamics.

  15. Linear delay-differential systems with commensurate delays an algebraic approach

    CERN Document Server

    Gluesing-Luerssen, Heide

    2002-01-01

    The book deals with linear time-invariant delay-differential equations with commensurated point delays in a control-theoretic context. The aim is to show that with a suitable algebraic setting a behavioral theory for dynamical systems described by such equations can be developed. The central object is an operator algebra which turns out to be an elementary divisor domain and thus provides the main tool for investigating the corresponding matrix equations. The book also reports the results obtained so far for delay-differential systems with noncommensurate delays. Moreover, whenever possible it points out similarities and differences to the behavioral theory of multidimensional systems, which is based on a great deal of algebraic structure itself. The presentation is introductory and self-contained. It should also be accessible to readers with no background in delay-differential equations or behavioral systems theory. The text should interest researchers and graduate students.

  16. Delay-Amount Tradeoffs in Choices by Pigeons and Rats: Hyperbolic versus Exponential Discounting

    Science.gov (United States)

    Mazur, James E.; Biondi, Dawn R.

    2009-01-01

    An adjusting-delay procedure was used to study the choices of pigeons and rats when both delay and amount of reinforcement were varied. In different conditions, the choice alternatives included one versus two reinforcers, one versus three reinforcers, and three versus two reinforcers. The delay to one alternative (the standard alternative) was…

  17. American Dream Delayed

    DEFF Research Database (Denmark)

    Khorunzhina, Natalia; Miller, Robert A.

    This paper investigates the delay in homeownership and a subsequent reduction in homeownership rate observed over the past decades. We focus on the delay in giving birth to children and increased labor market participation as contributing factors to homeownership dynamics for prime-age female hou...

  18. Delay Restoration of Single-Track Railway Rescheduling

    Institute of Scientific and Technical Information of China (English)

    Zhang Youshi; Jin Weidong

    2006-01-01

    On the basis of analysis of the principle of delay restoration in a disturbed schedule, a heuristic algorithm for rescheduling trains is developed by restoring the total delay of the disturbed schedule. A discrete event topologic model is derived from the original undisturbed train diagram and a back propagation analysis method is used to label the maximum buffer time of each point in the model.In order to analyze the principle of delay restoration, the concept of critical delay is developed from the labeled maximum buffer time. The critical delay is the critical point of successful delay restoration. All the disturbed trains are classified into the strong-de-layed trains and the weak-delayed trains by the criterion of the critical delay. Only the latter, in which actual delay is less than its critical delay, can be adjusted to a normal running state during time horizon considered. The heuristic algorithm is used to restore all the disturbed trains according to their critical details. The cores of the algorithm are the iterative repair technique and two repair methods for the two kinds of trains. The algorithm searches iteratively the space of possible conflicts caused by disturbed trains using an earliest-delay-first heuristics and always attempts to repair the earliest constraint violation. The algorithm adjusts the weak-delayed trains directly back to the normal running state using the buffer time of the original train diagram. For the strong-delayed trains,the algorithm uses an utility function with some weighted attributes to determine the dynamic priority of the trains, and resolves the conflict according to the calculated dynamic priority. In the end, the experimental results show that the algorithm produces "good enough" schedules effectively and efficiently in disturbed situations.

  19. 长江河口南支河道近期演变与自动调整过程研究%Recent evolution and self-adjustment processes of south branch of Yangtze River estuary

    Institute of Scientific and Technical Information of China (English)

    张晓鹤; 李九发; 姚弘毅; 朱文武

    2015-01-01

    基于长江河口1997年以来大量的数字地形图和水文泥沙实测资料,分析研究了工程影响下南支河段河床自动调整过程. 结果表明:三峡水库蓄水以来,在来水量未变、来沙锐减背景下,南支河道水流流态较平稳,而河床持续冲刷,但2006年以后河床冲刷强度减小,现逐渐向冲淤平衡发展;河槽断面趋于窄深,白茆沙和新浏河沙沙体的变化对南支河段的稳定性影响较大,南北港分流口冲淤变化频繁,新浏河沙护滩工程起到了一定的"固滩、限流"作用,但并不能阻止新浏河沙和南沙头护堤前沿河床冲刷的势态. 建议对扁担沙沙尾采取适当的工程整治措施.%Based on the digital topographic map and hydrological sediment data since 1997 and the recent hydrologic field ob-servations, the self-adjustment process of south branch in Yangtze estuary under the influence of Xinliuhe shoal protection works and Three Gorges Project are analyzed. The results indicate that the water fluvial regime is stable and the riverbed is in continu-ous erosion state under the condition of sharp sediment decrease and unchanged discharge since the completion of Three Gorge Project;the river bed is continuously scoured but the intensity has become smaller and has a new balance tendency since 2006;in the same period, the cross sections are narrower and deeper, the changes of Baimao and Xinliuhe shoals exert significant influ-ence on the stability of the channel; the erosion and deposition of south and north passage bifurcations changes frequently; the constructed Xinliuhe shoal protection works and Nanshatou channel submerged dike projects play a great role in shoal fixing and flow limiting, but can not prevent the trend of intense erosion at the front areas of Xinliuhe shoal and Nanshatou channel. Some effective measures should be taken to the tail of Biandan shoal.

  20. 同伴依恋在受艾滋病影响儿童自尊和学校适应间的中介作用%The mediation effect of the peer attachment between the self-esteem and the school adjustment of the children affected by AIDS/HIV

    Institute of Scientific and Technical Information of China (English)

    田艳辉; 李巧灵; 郭腾飞; 赵俊峰

    2013-01-01

    目的 探讨受艾滋病影响儿童自尊对学校适应的影响及同伴依恋在该过程中的作用.方法 从河南省某受艾滋病影响严重地区选取符合条件的250名受艾滋病影响儿童作为研究对象,用自尊量表、同伴依恋量表和学校适应量表进行调查.结果 ①受艾滋病影响儿童自尊对学校适应具有显著的正向影响(β=0.227,P<0.01).②受艾滋病影响儿童自尊对同伴依恋具有显著的正向影响(β=0.236,P<0.01).③在控制同伴依恋的间接作用后,自尊对学校适应的影响仍然显著(β=0.145,P<0.05),表明同伴依恋在自尊影响学校适应的内在机制中起部分中介作用.结论 受艾滋病影响儿童自尊对学校适应具有显著的影响,自尊既可以直接对学校适应产生影响,又可以通过同伴依恋的间接作用产生影响.%Objective To explore the mediation effect of the peer attachment between the self-esteem and the school adjustment of the children affected by AIDS/HIV.Methods 250 children affected by the AIDS/HIV were investigated in the research in a district affected by AIDS/HIV in the Henan province.Self-esteem scale,peer attachment questionnaire and school adjustment questionnaire was adopted in the study.Results ①Self-esteem had a positive significant effect on the school adjustment (β=0.227,P<0.01).(②)self-esteem had a positive significant effect on the peer attachment (β=0.236,P< 0.01).(③When controlled the indirect effect of peer attachment,the effect of the self-esteem on the school adjustment had still been significant (β =0.145,P<0.05),it proved that the peer attachment played a partly mediation between the relationship of the self-esteem and the school adjustment.Conclusion Self-esteem has a positive significant effect on the school adjustment; and self-esteem can not only affect the school adjustment directly,but also affect the school adjustment through the peer attachment.

  1. Migrant Children' s Perceived Trust and Its Relationship with Emotional Adjustment and Self-esteem as Mediator%流动儿童的信任知觉与情绪适应的关系及自尊的中介作用

    Institute of Scientific and Technical Information of China (English)

    梁丽婵; 边玉芳

    2013-01-01

    目的:考察流动儿童的信任知觉状况及与一般儿童的差异,并探讨其与情绪适应的关系以及自尊在其中是否起中介作用.方法:采用问卷测查691名流动儿童、684名一般儿童的信任知觉、情绪适应和自尊.结果:①流动儿童知觉到的父母、教师、同伴的信任显著低于一般儿童.②流动儿童知觉到的父母、教师、同伴的信任与孤独感、抑郁、焦虑呈显著负相关.③流动儿童的信任知觉对孤独感、抑郁、焦虑既存在直接影响,也通过自尊的中介效应影响情绪适应情况.结论:增加流动儿童感知到的父母、教师、同伴信任,可以提高其自尊,从而减少情绪适应不良的问题.%Objective: The present study explored the Chinese migrant children's perceived trust and its relationship with emotional adjustment, and examined whether self-esteem served as mediator in the relationship between perceived trust and emotional adjustment. Methods: There were 691 migrant children and 684 urban children recruited through a self-administrated questionnaire. To assess their data of demographic information, perceived trust (including parents' trust, teacher's trust, peers trust), emotional adjustment (including loneliness, depression, anxiety), and self-esteem. Results: ① Migrant children's level of perceived trust was significantly lower than that of urban children's. ②Migrant children's perceived trust could significantly predict their emotional adjustment.③Among the migrant children, perceived trust affected emotional adjustment directly, and also indirectly through self-esteem. Conclusion: Migrant children's perceived trust improves their emotional adjustment through enhancing self-esteem.

  2. Rationale of the BREAst cancer e-healTH [BREATH] multicentre randomised controlled trial: An Internet-based self-management intervention to foster adjustment after curative breast cancer by decreasing distress and increasing empowerment

    National Research Council Canada - National Science Library

    Berg, S.W. van den; Gielissen, M.F.M; Ottevanger, P.B; Prins, J.B

    2012-01-01

    .... Standard and easy-accessible care to facilitate this transition is lacking. In order to facilitate adjustment for all breast cancer patients after primary treatment, the BREATH intervention is aimed at 1...

  3. Auto Adjusting Astronomical Telescope

    Directory of Open Access Journals (Sweden)

    Rohit R. Ghalsasi

    2014-04-01

    Full Text Available Astronomical telescope is powerful and basic tool for star or celestial observation. Here we proposed integrated system using Raspberry Pi for auto adjusting astronomical telescope. This integrated circuit helps to control stellar monitoring, stellar targeting, and tracking functions of telescope. Astro compass gives the direction of the celestial objects.

  4. Psychological Adjustment and Homosexuality.

    Science.gov (United States)

    Gonsiorek, John C.

    In this paper, the diverse literature bearing on the topic of homosexuality and psychological adjustment is critically reviewed and synthesized. The first chapter discusses the most crucial methodological issue in this area, the problem of sampling. The kinds of samples used to date are critically examined, and some suggestions for improved…

  5. New Results on Passivity Analysis of Stochastic Neural Networks with Time-Varying Delay and Leakage Delay

    Directory of Open Access Journals (Sweden)

    YaJun Li

    2015-01-01

    Full Text Available The passivity problem for a class of stochastic neural networks systems (SNNs with varying delay and leakage delay has been further studied in this paper. By constructing a more effective Lyapunov functional, employing the free-weighting matrix approach, and combining with integral inequality technic and stochastic analysis theory, the delay-dependent conditions have been proposed such that SNNs are asymptotically stable with guaranteed performance. The time-varying delay is divided into several subintervals and two adjustable parameters are introduced; more information about time delay is utilised and less conservative results have been obtained. Examples are provided to illustrate the less conservatism of the proposed method and simulations are given to show the impact of leakage delay on stability of SNNs.

  6. The Mediating Role of Psychological Adjustment between Peer Victimization and Social Adjustment in Adolescence

    OpenAIRE

    Romera, Eva M.; Gómez-Ortiz, Olga; Ortega-Ruiz, Rosario

    2016-01-01

    There is extensive scientific evidence of the serious psychological and social effects that peer victimization may have on students, among them internalizing problems such as anxiety or negative self-esteem, difficulties related to low self-efficacy and lower levels of social adjustment. Although a direct relationship has been observed between victimization and these effects, it has not yet been analyzed whether there is a relationship of interdependence between all these measures of psychoso...

  7. Determinants of delays in travelling to an emergency obstetric care facility in Herat, Afghanistan: an analysis of cross-sectional survey data and spatial modelling.

    Science.gov (United States)

    Hirose, Atsumi; Borchert, Matthias; Cox, Jonathan; Alkozai, Ahmad Shah; Filippi, Veronique

    2015-02-05

    Women's delays in reaching emergency obstetric care (EmOC) facilities contribute to high maternal and perinatal mortality and morbidity in low-income countries, yet few studies have quantified travel times to EmOC and examined delays systematically. We defined a delay as the difference between a woman's travel time to EmOC and the optimal travel time under the best case scenario. The objectives were to model travel times to EmOC and identify factors explaining delays. i.e., the difference between empirical and modelled travel times. A cost-distance approach in a raster-based geographic information system (GIS) was used for modelling travel times. Empirical data were obtained during a cross-sectional survey among women admitted in a life-threatening condition to the maternity ward of Herat Regional Hospital in Afghanistan from 2007 to 2008. Multivariable linear regression was used to identify the determinants of the log of delay. Amongst 402 women, 82 (20%) had no delay. The median modelled travel time, reported travel time, and delay were 1.0 hour [Q1-Q3: 0.6, 2.2], 3.6 hours [Q1-Q3: 1.0, 12.0], and 2.0 hours [Q1-Q3: 0.1, 9.2], respectively. The adjusted ratio (AR) of a delay of the "one-referral" group to the "self-referral" group was 4.9 [95% confidence interval (CI): 3.8-6.3]. Difficulties obtaining transportation explained some delay [AR 2.1 compared to "no difficulty"; 95% CI: 1.5-3.1]. A husband's very large social network (> = 5 people) doubled a delay [95% CI: 1.1-3.7] compared to a moderate (3-4 people) network. Women with severe infections had a delay 2.6 times longer than those with postpartum haemorrhage (PPH) [95% CI: 1.4-4.9]. Delays were mostly explained by the number of health facilities visited. A husband's large social network contributed to a delay. A complication with dramatic symptoms (e.g. PPH) shortened a delay while complications with less-alarming symptoms (e.g. severe infection) prolonged it. In-depth investigations are needed to

  8. On the time delay between ultrarelativistic particles

    CERN Document Server

    Fleury, Pierre

    2016-01-01

    The time delay between the receptions of ultrarelativistic particles emitted simultaneously is an observable for both fundamental physics and cosmology. The expression of the delay when the particles travel through an arbitrary spacetime has been derived recently in arXiv:1512.08489, using a particular coordinate system and self-consistent assumptions. In this article I show that this formula enjoys a simple physical interpretation: the relative velocity between two ultrarelativistic particles is constant. This result reveals an interesting kinematical property of general relativity, namely that the tidal forces experienced by ultrarelativistic particles in the direction of their motion are much smaller than those experienced orthogonally to their motion.

  9. Psychosocial correlates of delayed decisions to abort.

    Science.gov (United States)

    Bracken, M B; Kasl, S V

    1976-01-01

    Two samples of women aborting in New York and Connecticut during 1972 and 1973 were studied. In all, six hundred and fifty eight women about to undergo first and second trimester procedures completed a self-administered questionnaire. Items include: demographic, psychosocial and personality parameters, and a detailed review of the decision process leading to abortion. Analyses of the correlates of delay are organized around four components: acknowledgment of pregnancy; seeing a physician ; deciding to abort; and locating a clinic. Other analyses focus on the role of decisional conflict in delay. Methodological issues, implications for educational practice and for theory of decision-making are discussed.

  10. commensurate point delays

    Directory of Open Access Journals (Sweden)

    M. de la Sen

    2005-01-01

    nominal controller is maintained. In the current approach, the finite spectrum assignment is only considered as a particular case of the designer's choice of a (delay-dependent arbitrary spectrum assignment objective.

  11. Time Delay Cosmography

    OpenAIRE

    Treu, Tommaso; Marshall, Philip J.

    2016-01-01

    Gravitational time delays, observed in strong lens systems where the variable background source is multiply-imaged by a massive galaxy in the foreground, provide direct measurements of cosmological distance that are very complementary to other cosmographic probes. The success of the technique depends on the availability and size of a suitable sample of lensed quasars or supernovae, precise measurements of the time delays, accurate modeling of the gravitational potential of the main deflector,...

  12. Psychological Adjustment in Bullies and Victims of School Violence

    Science.gov (United States)

    Estevez, Estefania; Murgui, Sergio; Musitu, Gonzalo

    2009-01-01

    The present study examined psychosocial adjustment in the following four groups of students: victims, bullies, bully/victims and a control group of adolescents not involved in bullying or victimization problems. Psychosocial adjustment was measured considering as indicators: level of self-esteem, depressive symptomatology, perceived stress,…

  13. Psychological Adjustment of Siblings to a Child with Diabetes.

    Science.gov (United States)

    Hollidge, Colin

    2001-01-01

    Examines the psychological adjustment of well child siblings living with siblings with diabetes. Psychological adjustment was assessed by measuring self-concept; behavioral difficulties; competence; anxiety; and depression on standardized tests. The well siblings demonstrated significant internal psychological stressors and maintained high levels…

  14. Facilitating Postdivorce Adjustment among Women: A Communication Skills Training Approach.

    Science.gov (United States)

    Thiessen, Jake D.; And Others

    1980-01-01

    Examined the effects of communication skills training on adjustment to divorce and separation among women. Results indicated that the experimental group significantly increased in overall divorce adjustment and in empathy skills. No significant differences were found in perceived social support or self-disclosure skill. (Author)

  15. Psychological Adjustment in Bullies and Victims of School Violence

    Science.gov (United States)

    Estevez, Estefania; Murgui, Sergio; Musitu, Gonzalo

    2009-01-01

    The present study examined psychosocial adjustment in the following four groups of students: victims, bullies, bully/victims and a control group of adolescents not involved in bullying or victimization problems. Psychosocial adjustment was measured considering as indicators: level of self-esteem, depressive symptomatology, perceived stress,…

  16. Parental Perceptions of Family Adjustment in Childhood Developmental Disabilities

    Science.gov (United States)

    Thompson, Sandra; Hiebert-Murphy, Diane; Trute, Barry

    2013-01-01

    Based on the adjustment phase of the double ABC-X model of family stress (McCubbin and Patterson, 1983) this study examined the impact of parenting stress, positive appraisal of the impact of child disability on the family, and parental self-esteem on parental perceptions of family adjustment in families of children with disabilities. For mothers,…

  17. Parental Perceptions of Family Adjustment in Childhood Developmental Disabilities

    Science.gov (United States)

    Thompson, Sandra; Hiebert-Murphy, Diane; Trute, Barry

    2013-01-01

    Based on the adjustment phase of the double ABC-X model of family stress (McCubbin and Patterson, 1983) this study examined the impact of parenting stress, positive appraisal of the impact of child disability on the family, and parental self-esteem on parental perceptions of family adjustment in families of children with disabilities. For mothers,…

  18. Metric adjusted skew information

    DEFF Research Database (Denmark)

    Hansen, Frank

    2008-01-01

    establish a connection between the geometrical formulation of quantum statistics as proposed by Chentsov and Morozova and measures of quantum information as introduced by Wigner and Yanase and extended in this article. We show that the set of normalized Morozova-Chentsov functions describing the possible...... quantum statistics is a Bauer simplex and determine its extreme points. We determine a particularly simple skew information, the "¿-skew information," parametrized by a ¿ ¿ (0, 1], and show that the convex cone this family generates coincides with the set of all metric adjusted skew informations.......We extend the concept of Wigner-Yanase-Dyson skew information to something we call "metric adjusted skew information" (of a state with respect to a conserved observable). This "skew information" is intended to be a non-negative quantity bounded by the variance (of an observable in a state...

  19. Delay-induced driven patterns in coupled Cayley tree networks

    CERN Document Server

    Singh, Aradhana

    2013-01-01

    We study effects of delay in diffusively coupled logistic maps on the Cayley tree networks. We find that smaller coupling values exhibits sensitiveness for value of delay, and leads to different cluster patterns of self-organized and driven types. Whereas larger coupling strengths are very robust against change in delay values, and leads to stable driven clusters comprising only nodes from last generation of the Calaye tree. Furthermore, introduction of delay exhibits suppression as well as enhancement of synchronization depending upon coupling strength values, hence demonstrating richness of the model. To the end we relate the results with social conflicts and cooperation observed in families.

  20. Fiscal adjustment in Brazil

    Directory of Open Access Journals (Sweden)

    Fabiana Rocha

    2003-03-01

    Full Text Available Two questions are addressed in this paper. The first one is the determination of periods of fiscal consolidation and fiscal stimulus. The second one is the importance of the composition of fiscal adjustments for their success, defined as a declining debt to GDP ratio. We, characterize 1994 and 1999 as points of fiscal consolidation. The 1994 consolidation can not be considered successful since after that period the debt to GDP ratio has grown continuously. The adjustment can be characterized as a type 2 adjustment (Alesina and Perotti (1997 in the sense that cuts were made mainly in public investment, while government wages and transfers remained almost unchanged. This type of adjustment usually has a low likelihood of being a success.Duas questões são tratadas neste artigo. A primeira é a determinação dos períodos de consolidação fiscal e estímulo fiscal. A segunda questão é a importância da composição dos ajustamentos fiscais para o seu sucesso, definido como um declínio na razo dívida/PIB. Nós, caracterizamos 1994 e 1999 como pontos de consolidação fiscal. A consolidação de 1994 não pode ser considerada um sucesso pois nos anos seguintes a razão dívida/PIB cresceu continuamente. O ajustamento pode ser considerado como um ajustamento do tipo 2 (Alesina and Perotti, 1997 no sentido de que foram feitos cortes principalmente no investimento público, enquanto os salários e transferências permaneceram praticamente inalterados. Este tipo de ajustamento geralmente tem uma baixa probabilidade de sucesso.

  1. Glacial isostatic adjustment in the static gravity field of Fennoscandia

    NARCIS (Netherlands)

    Root, B.C.; Van der Wal, W.; Novak, P.; Ebbing, J.; Vermeersen, L.L.A.

    2015-01-01

    In the central part of Fennoscandia, the crust is currently rising, because of the delayed response of the viscous mantle to melting of the Late Pleistocene ice sheet. This process, called Glacial Isostatic Adjustment (GIA), causes a negative anomaly in the present-day static gravity field as isosta

  2. ABOUT HYBRID BIDIRECTIONAL ASSOCIATIVE MEMORY NEURAL NETWORKS WITH DISCRETE DELAYS

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    In this paper, hybrid bidirectional associative memory neural networks with discrete delays is considered. By ingeniously importing real parameters di > 0(i = 1,2,···,n) which can be adjusted, we establish some new sufficient conditions for the dynamical characteristics of hybrid bidirectional associative memory neural networks with discrete delays by the method of variation of parameters and some analysis techniques. Our results generalize and improve the related results in [10,11]. Our work is significant...

  3. [Psychological adjustment following lower limb amputation].

    Science.gov (United States)

    Panyi, Lilla Krisztina; Lábadi, Beatrix

    2015-09-27

    Rehabilitation of lower limb amputees and the fitting of their prosthesis depend highly on the psychological adjustment process and motivational state of the patient. The loss of a limb is extremely challenging and can cause various physical and psychological problems. Depression, anxiety, decreased well-being and quality of life, body image dissatisfaction and changes in self-concept and identity are frequent after lower limb amputation. In the interest of adjustment patients have to cope with the emerging changes and difficulties in their lifes as well as the problems in psychological functioning. It is important for them to accept the alterations in their body and identity, and integrate them in a new self-concept in which process motivation is a fundamental issue. The aim of this article is to review the literature on psychological consequences of lower limb amputation, and to propose an integrative way of rehabilitation for lower limb amputees.

  4. Maternal coping styles and adjustment in children.

    Science.gov (United States)

    Atlas, J G; Rickel, A U

    1988-06-01

    A comprehensive examination of children's social-emotional adjustment as related to maternal coping styles was performed. Subjects were 186 black mothers from lower-income families, and their children who were enrolled in the Detroit Public Schools Area F, Title I Preschool Program. Maternal nurturant and restrictive child rearing practices, life stress, locus of control and marital status were evaluated with respect to each of the child variables of school adjustment, self-concept and social problem solving skills. Maternal life stress was significantly related to children's lower self-concept, higher aggression, use of finagling and nondirective problem-solving strategies. Significant negative relationships were found between maternal nurturance and child moodiness and learning problems in school, further validating the Modified Child Rearing Practices Report. These findings provide support for expanding the current child developmental focus of preventive parenting programs to include maternal coping strategies such as improved communication and assertiveness training.

  5. Time-delayed autosynchronous swarm control.

    Science.gov (United States)

    Biggs, James D; Bennet, Derek J; Dadzie, S Kokou

    2012-01-01

    In this paper a general Morse potential model of self-propelling particles is considered in the presence of a time-delayed term and a spring potential. It is shown that the emergent swarm behavior is dependent on the delay term and weights of the time-delayed function, which can be set to induce a stationary swarm, a rotating swarm with uniform translation, and a rotating swarm with a stationary center of mass. An analysis of the mean field equations shows that without a spring potential the motion of the center of mass is determined explicitly by a multivalued function. For a nonzero spring potential the swarm converges to a vortex formation about a stationary center of mass, except at discrete bifurcation points where the center of mass will periodically trace an ellipse. The analytical results defining the behavior of the center of mass are shown to correspond with the numerical swarm simulations.

  6. Adjusting Your Gaze

    Science.gov (United States)

    Webber-Thrush, Diane

    2010-01-01

    Peter Wylie is a man of many contradictions: a statistician and a storyteller, an introvert who loves an audience, and a self-described data geek with a passion for his work and the people it helps. Wylie is one of the pioneers of predictive modeling, the statistical analysis that uses data to drive educational institutions and nonprofits toward…

  7. Postural adjustments are modulated by manual task complexity

    Directory of Open Access Journals (Sweden)

    Luis Augusto Teixeira

    2009-09-01

    Full Text Available Daily life activities of humans are characterized by dual tasks, in which a manual task is performed concomitantly with a postural task. Based on the assumption that both manual and postural tasks require attentional resources, no consensus exists as to how the central nervous system modulates postural adjustments in dual tasks. The aim of the present study was to analyze the effect of a manual task requiring attentional resources on shoulder and ankle adjustments as a function of the direction and predictability of postural perturbation. The participants (n=6 were evaluated during the performance of a simple and a complex manual task, while the base of support was moved backward or forward. Latency of activation of the tibialis anterior and gastroc-nemius muscles and angular acceleration of the shoulder were analyzed. The results showed that execution of the complex manual task delayed postural adjustment. Moreover, this delay occurred differently depending on the direction of postural perturbation. The delay in postural adjustment occurred proximally in the case of anterior displacement of the platform, and distally in the case of posterior displacement. Postural adjustments were more affected by the attentional task than by the predictability of platform displacement. These results are consistent with the concept of an integrated control between manual actions and the maintenance of static posture.

  8. Adjustment Criterion and Algorithm in Adjustment Model with Uncertain

    Directory of Open Access Journals (Sweden)

    SONG Yingchun

    2015-02-01

    Full Text Available Uncertainty often exists in the process of obtaining measurement data, which affects the reliability of parameter estimation. This paper establishes a new adjustment model in which uncertainty is incorporated into the function model as a parameter. A new adjustment criterion and its iterative algorithm are given based on uncertainty propagation law in the residual error, in which the maximum possible uncertainty is minimized. This paper also analyzes, with examples, the different adjustment criteria and features of optimal solutions about the least-squares adjustment, the uncertainty adjustment and total least-squares adjustment. Existing error theory is extended with new observational data processing method about uncertainty.

  9. Sustainable urban regime adjustments

    DEFF Research Database (Denmark)

    Quitzau, Maj-Britt; Jensen, Jens Stissing; Elle, Morten

    2013-01-01

    The endogenous agency that urban governments increasingly portray by making conscious and planned efforts to adjust the regimes they operate within is currently not well captured in transition studies. There is a need to acknowledge the ambiguity of regime enactment at the urban scale. This directs...... attention to the transformative implications of conscious strategic maneuvering by incumbent regime actors, when confronting regime structurations. This article provides insight to processes of regime enactment performed by local governments by applying a flow-oriented perspective on regime dynamics...

  10. Adjustable Reeds For Weaving

    Science.gov (United States)

    Farley, Gary L.

    1994-01-01

    Local characteristics of fabrics varied to suit special applications. Adjustable reed machinery proposed for use in weaving fabrics in various net shapes, widths, yarn spacings, and yarn angles. Locations of edges of fabric and configuration of warp and filling yarns varied along fabric to obtain specified properties. In machinery, reed wires mounted in groups on sliders, mounted on lengthwise rails in reed frame. Mechanisms incorporated to move sliders lengthwise, parallel to warp yarns, by sliding them along rails; move sliders crosswise by translating reed frame rails perpendicular to warp yarns; and crosswise by spreading reed rails within group. Profile of reed wires in group on each slider changed.

  11. Jordan Adjusted Human Development

    OpenAIRE

    Ababsa, Myriam

    2014-01-01

    Jordan Human Development Index (HDI) and Adjusted Human Development Index (IHDI) In 1990, the United Nations Development Programme designed a Human Development Index composed of life expectancy at birth, level of education and gross domestic product (GDP) per capita. In 2011, the UNDP ranked Jordan 95th out of 187 countries with a human development index of 0.698, up from 0.591 in 1990, making it the leading medium-range country for human development (fig. VIII.1). In 2010, the inequality adj...

  12. Experimental analysis of control loops with different delay times in the supply air system of a radiator test rig

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Yongpan; Zhao, Tianyi [School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090 (China); Zhang, Jili; Lu, Zhen [School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024 (China); Liu, Hui [Beijing Siemens Cerberus Electronics Ltd, Beijing 100085 (China)

    2011-01-15

    The test rig of low-temperature hot-water radiator is a typical multi-input multi-output (MIMO) thermal system with large time delay. Aiming at the control of the supply air temperature and the temperature of the environmental chamber in the test rig, the paper carries out the fuzzy control experiments and PI control experiments based on adjusting the electric heater in the supply air system, in which there are two control loops with various delay time. The experiments researched two types of fuzzy control methods which are the basic fuzzy control (BFC), and the self-organizing rules fuzzy control (SORFC) with zero initial control rules. For the control loop of supply air temperature with short delay time, PI control performs better with fast convergence speed and small overshoot than the BFC and the SORFC. The convergence speed of the BFC method is lower than other two control methods. For the control loop of chamber temperature with long delay time, the SORFC has a satisfied control performance with less overshoot and stable error than the BFC and PI control. (author)

  13. Time Delay Cosmography

    CERN Document Server

    Treu, Tommaso

    2016-01-01

    Gravitational time delays, observed in strong lens systems where the variable background source is multiply-imaged by a massive galaxy in the foreground, provide direct measurements of cosmological distance that are very complementary to other cosmographic probes. The success of the technique depends on the availability and size of a suitable sample of lensed quasars or supernovae, precise measurements of the time delays, accurate modeling of the gravitational potential of the main deflector, and our ability to characterize the distribution of mass along the line of sight to the source. We review the progress made during the last 15 years, during which the first competitive cosmological inferences with time delays were made, and look ahead to the potential of significantly larger lens samples in the near future.

  14. Prediction of delayed subsidence

    Science.gov (United States)

    Burns, K.

    A predictive model of delayed subsidence is discussed. A numerical implementation is tested on one of the best-described study areas, Allegheny County in Pennsylvania. In planning insurance of restitution measures, a predictive model is of value in estimating the magnitude of the problem and the size of long-term budgetary commitments. Contrary to active subsidence, which occurs concurrently with mining operations, or is completed within a few days following coal extraction, delayed subsidence may take many years to appear at the surface after coal mines are abandoned. There are two principal morphological types of delayed subsidence: troughs, which are shallow depressions, and sinks, which are steep-sided crown pits. Both types are damaging to surface structures, and a variety of methods were introduced to deal with the problem, ranging from subsidence insurance to site restitution.

  15. Time delay cosmography

    Science.gov (United States)

    Treu, Tommaso; Marshall, Philip J.

    2016-07-01

    Gravitational time delays, observed in strong lens systems where the variable background source is multiply imaged by a massive galaxy in the foreground, provide direct measurements of cosmological distance that are very complementary to other cosmographic probes. The success of the technique depends on the availability and size of a suitable sample of lensed quasars or supernovae, precise measurements of the time delays, accurate modeling of the gravitational potential of the main deflector, and our ability to characterize the distribution of mass along the line of sight to the source. We review the progress made during the last 15 years, during which the first competitive cosmological inferences with time delays were made, and look ahead to the potential of significantly larger lens samples in the near future.

  16. The Implications of University Outcome Expectations for Student Adjustment

    Science.gov (United States)

    Bergin, Adele J.; Jimmieson, Nerina L.

    2017-01-01

    We examined the relationship between university outcome expectations and student adjustment using 2 samples of business students. Study 1 (N = 135) reveals that, for students with high academic self-efficacy, outcome expectations had a positive association with satisfaction; in contrast, for students with low academic self-efficacy, outcome…

  17. Continuously adjustable Pulfrich spectacles

    Science.gov (United States)

    Jacobs, Ken; Karpf, Ron

    2011-03-01

    A number of Pulfrich 3-D movies and TV shows have been produced, but the standard implementation has inherent drawbacks. The movie and TV industries have correctly concluded that the standard Pulfrich 3-D implementation is not a useful 3-D technique. Continuously Adjustable Pulfrich Spectacles (CAPS) is a new implementation of the Pulfrich effect that allows any scene containing movement in a standard 2-D movie, which are most scenes, to be optionally viewed in 3-D using inexpensive viewing specs. Recent scientific results in the fields of human perception, optoelectronics, video compression and video format conversion are translated into a new implementation of Pulfrich 3- D. CAPS uses these results to continuously adjust to the movie so that the viewing spectacles always conform to the optical density that optimizes the Pulfrich stereoscopic illusion. CAPS instantly provides 3-D immersion to any moving scene in any 2-D movie. Without the glasses, the movie will appear as a normal 2-D image. CAPS work on any viewing device, and with any distribution medium. CAPS is appropriate for viewing Internet streamed movies in 3-D.

  18. Delayed Random Relays

    CERN Document Server

    Ohira, Toru

    2016-01-01

    We present here a system with collection of random walks relaying a signal in one dimension with a presence of a delay. We are interested in the time for a signal to travel from one end (start) to the other end (finish) of the lined group of random walkers. It is found that there is an optimal number of walkers for the signal to travel fastest if the delay is present. We discuss implications of this model and associated behaviors to physical and biological systems.

  19. Approximation of distributed delays

    CERN Document Server

    Lu, Hao; Eberard, Damien; Simon, Jean-Pierre

    2010-01-01

    We address in this paper the approximation problem of distributed delays. Such elements are convolution operators with kernel having bounded support, and appear in the control of time-delay systems. From the rich literature on this topic, we propose a general methodology to achieve such an approximation. For this, we enclose the approximation problem in the graph topology, and work with the norm defined over the convolution Banach algebra. The class of rational approximates is described, and a constructive approximation is proposed. Analysis in time and frequency domains is provided. This methodology is illustrated on the stabilization control problem, for which simulations results show the effectiveness of the proposed methodology.

  20. Effects of time delays on bifurcation and chaos in a non-autonomous system with multiple time delays

    Energy Technology Data Exchange (ETDEWEB)

    Sun Zhongkui [Department of Applied Mathematics, Northwestern Polytechnical University, Xi' an 710072 (China)]. E-mail: sunzk205@mail.nwpu.edu.cn; Xu Wei [Department of Applied Mathematics, Northwestern Polytechnical University, Xi' an 710072 (China)]. E-mail: weixu@nwpu.edu.cn; Yang Xiaoli [Department of Applied Mathematics, Northwestern Polytechnical University, Xi' an 710072 (China); College of Mathematics and Information Science, Shaanxi Normal University, Xi' an 710062 (China); Fang Tong [Department of Applied Mechanics, Northwestern Polytechnical University, Xi' an 710072 (China)

    2007-01-15

    Time delays are often sources of complex behavior in dynamic systems. Yet its complexity needs to be further explored, particularly when multiple time delays are present. As a purpose to gain insight into such complexity under multiple time delays, we investigate the mechanism for the action of multiple time delays on a particular non-autonomous system in this paper. The original mathematical model under consideration is a Duffing oscillator with harmonic excitation. A delayed system is obtained by adding delayed feedbacks to the original system. Two time delays are involved in such system, one of which in the displacement feedback and the other in the velocity feedback. The time delays are taken as adjustable parameters to study their effects on the dynamics of the system. Firstly, the stability of the trivial equilibrium of the linearized system is discussed and the condition under which the equilibrium loses its stability is obtained. This leads to a critical stability boundary where Hopf bifurcation or double Hopf bifurcation may occur. Then, the chaotic behavior of such system is investigated in detail. Particular emphasis is laid on the effect of delay difference between two time delays on the chaotic properties. A Melnikov's analysis is employed to obtain the necessary condition for onset of chaos resulting from homoclinic bifurcation. And numerical analyses via the bifurcation diagram and the top Lyapunov exponent are carried out to show the actual time delay effect. Both the results obtained by the two analyses show that the delay difference between two time delays plays a very important role in inducing or suppressing chaos, so that it can be taken as a simple but efficient 'switch' to control the motion of a system: either from order to chaos or from chaos to order.

  1. Delay Bounds for Multiclass FIFO

    OpenAIRE

    Jiang, Yuming; Misra, Vishal

    2016-01-01

    FIFO is perhaps the simplest scheduling discipline. For single-class FIFO, its delay guarantee performance has been extensively studied: The well-known results include a stochastic delay bound for $GI/GI/1$ by Kingman and a deterministic delay bound for $D/D/1$ by Cruz. However, for multiclass FIFO, few such results are available. To fill the gap, we prove delay bounds for multiclass FIFO in this work, considering both deterministic and stochastic cases. Specifically, delay bounds are present...

  2. Research on Parameter Self-adjusting PID Controller based on Fuzzy Rules%基于模糊规则参数自整定PID控制器的仿真研究

    Institute of Scientific and Technical Information of China (English)

    林辉

    2011-01-01

    针对常规PID控制器参数整定不易、适应性差、控制精度不理想的现状,提出了在动态过程中参数自整定的模糊PID控制系统.利用模糊理论在线对PID参数进行调整,构成参数自整定PID控制器.通过MATLAB/SIMULINK仿真,仿真结果表明,与经典的PID控制方式相比较,该控制方式在快速性、稳态性及准确性方面都有较大提高.%Aimed at the actuality problem of routine PID controller such as poor adaptability and low controlling precision. the adjustment of PID parameters in a dynamic process was designed to improve the adaptability and the control accuracy. The paper focused on the design of parameter auto-tuning PID controller based on fuzzy rules. on-line adjustment of PID parameter is carried on by using fuzzy theory to establish controller for PID parameter adjustment. The simulation is made by MATLAB/SIMULINK, the simulation results show that the control method is greatly improved in the aspects such as rapidity, stabilization and accuracy compared with classical PID controller.

  3. Delayed breast implant reconstruction

    DEFF Research Database (Denmark)

    Hvilsom, Gitte B.; Hölmich, Lisbet R.; Steding-Jessen, Marianne;

    2012-01-01

    We evaluated the association between radiation therapy and severe capsular contracture or reoperation after 717 delayed breast implant reconstruction procedures (288 1- and 429 2-stage procedures) identified in the prospective database of the Danish Registry for Plastic Surgery of the Breast during...... reconstruction approaches other than implants should be seriously considered among women who have received radiation therapy....

  4. Delayed traumatic diaphragmatic hernia

    Science.gov (United States)

    Lu, Jing; Wang, Bo; Che, Xiangming; Li, Xuqi; Qiu, Guanglin; He, Shicai; Fan, Lin

    2016-01-01

    Abstract Background: Traumatic diaphragmatic hernias (TDHs) are sometimes difficult to identify at an early stage and can consequently result in diagnostic delays with life-threatening outcomes. It is the aim of this case study to highlight the difficulties encountered with the earlier detection of traumatic diaphragmatic hernias. Methods: Clinical data of patients who received treatment for delayed traumatic diaphragmatic hernias in registers of the First Affiliated Hospital of Xi’an Jiaotong University from 1998 to 2014 were analyzed retrospectively. Results: Six patients were included in this study. Left hemidiaphragm was affected in all of them. Most of the patients had a history of traffic accident and 1 a stab-penetrating injury. The interval from injury to developing symptoms ranged from 2 to 11 years (median 5 years). The hernial contents included the stomach, omentum, small intestine, and colon. Diaphragmatic injury was missed in all of them during the initial managements. All patients received operations once the diagnosis of delayed TDH was confirmed, and no postoperative mortality was detected. Conclusions: Delayed TDHs are not common, but can lead to serious consequences once occurred. Early detection of diaphragmatic injuries is crucial. Surgeons should maintain a high suspicion for injuries of the diaphragm in cases with abdominal or lower chest traumas, especially in the initial surgical explorations. We emphasize the need for radiographical follow-up to detect diaphragmatic injuries at an earlier stage. PMID:27512848

  5. 'No delays achiever'.

    Science.gov (United States)

    2007-05-01

    The latest version of the NHS Institute for Innovation and Improvement's 'no delays achiever', a web based tool created to help NHS organisations achieve the 18-week target for GP referrals to first treatment, is available at www.nodelaysachiever.nhs.uk.

  6. Permissible Delay in Payments

    Directory of Open Access Journals (Sweden)

    Yung-Fu Huang

    2007-01-01

    Full Text Available The main purpose of this paper wants to investigate the optimal retailer's lot-sizing policy with two warehouses under partially permissible delay in payments within the economic order quantity (EOQ framework. In this paper, we want to extend that fully permissible delay in payments to the supplier would offer the retailer partially permissible delay in payments. That is, the retailer must make a partial payment to the supplier when the order is received. Then the retailer must pay off the remaining balance at the end of the permissible delay period. In addition, we want to add the assumption that the retailer's storage space is limited. That is, the retailer will rent the warehouse to store these exceeding items when the order quantity is larger than retailer's storage space. Under these conditions, we model the retailer's inventory system as a cost minimization problem to determine the retailer's optimal cycle time and optimal order quantity. Three theorems are developed to efficiently determine the optimal replenishment policy for the retailer. Finally, numerical examples are given to illustrate these theorems and obtained a lot of managerial insights.

  7. Psychosocial adjustment to recurrent cancer.

    Science.gov (United States)

    Mahon, S M; Cella, D F; Donovan, M I

    1990-01-01

    This descriptive study of the perceptions and needs of people with recurrent malignancies asks three questions: How do patients describe the meaning of a recurrence of cancer? Do individuals perceive the diagnosis of recurrence and the initial diagnosis of cancer differently? What are the key psychosocial problems associated with recurrent cancer? The theoretical framework was based on Lazarus and Folkman's theory of stress, appraisal, and coping. Subjects completed the Impact of Event Scale (IES), the Psychosocial Adjustment to Illness Scale--Self-Report (PAIS), and a semistructured qualitative interview. The interview elicited perceptions of the event of recurrence and differences between the diagnosis of recurrence and the initial diagnosis. The convenience sample included 40 patients diagnosed with recurrent cancer within the last 30 days. Many subjects (78%) reported that the recurrence was more upsetting than the initial diagnosis. Scores on both the IES and the PAIS were high when compared to normative samples of patients with cancer suggesting that this sample of patients experienced a lot of psychological distress as well as problems at home, work, and in their social lives. These concerns often were unknown to caregivers. Although more research is needed, the authors propose that, with more accurate assessment, more effective intervention could be implemented and the quality of life improved for patients with recurrent cancer.

  8. Delayed fluorescence in photosynthesis.

    Science.gov (United States)

    Goltsev, Vasilij; Zaharieva, Ivelina; Chernev, Petko; Strasser, Reto J

    2009-01-01

    Photosynthesis is a very efficient photochemical process. Nevertheless, plants emit some of the absorbed energy as light quanta. This luminescence is emitted, predominantly, by excited chlorophyll a molecules in the light-harvesting antenna, associated with Photosystem II (PS II) reaction centers. The emission that occurs before the utilization of the excitation energy in the primary photochemical reaction is called prompt fluorescence. Light emission can also be observed from repopulated excited chlorophylls as a result of recombination of the charge pairs. In this case, some time-dependent redox reactions occur before the excitation of the chlorophyll. This delays the light emission and provides the name for this phenomenon-delayed fluorescence (DF), or delayed light emission (DLE). The DF intensity is a decreasing polyphasic function of the time after illumination, which reflects the kinetics of electron transport reactions both on the (electron) donor and the (electron) acceptor sides of PS II. Two main experimental approaches are used for DF measurements: (a) recording of the DF decay in the dark after a single turnover flash or after continuous light excitation and (b) recording of the DF intensity during light adaptation of the photosynthesizing samples (induction curves), following a period of darkness. In this paper we review historical data on DF research and recent advances in the understanding of the relation between the delayed fluorescence and specific reactions in PS II. An experimental method for simultaneous recording of the induction transients of prompt and delayed chlorophyll fluorescence and decay curves of DF in the millisecond time domain is discussed.

  9. [Causal relationship between assertiveness and adjustment in children: A short-term longitudinal study].

    Science.gov (United States)

    Eguchi, Megumi; Hamaguchi, Yoshikazu

    2015-08-01

    This study examined the causal relationships between assertiveness and both internal and external adjustment in children. Elementary school children in grades four through six (N = 284) participated in the study, which used a short-term longitudinal design. The children completed questionnaires twice during a 6-months period. They responded to assertiveness questionnaires that included two components: "self-expression" and "consideration of others". They also completed a self-esteem scale as an index of internal adjustment, and the Class Life Satisfaction scale as an index of external adjustment. There was a positive causative relationship between "self-expression" and internal adjustment and between "consideration for others" and external adjustment. In addition, the effects on adjustment varied according to the type of assertiveness. Cluster analysis and MANOVA indicated that the group with high "self-expression" and "consideration for others" had high internal and external adjustment, while the children with poor assertiveness showed the lowest degree of adaptivity.

  10. 聋生歧视知觉与社会适应:自尊的中介效应%Deaf Students Perceived Discrimination and Social Adjustment:The Mediating Effect of Self-Esteem

    Institute of Scientific and Technical Information of China (English)

    乔月平; 石学云

    2016-01-01

    为了探讨自尊在聋生歧视知觉与社会适应关系中的中介作用。文章采用歧视知觉问卷、青少年社会适应量表( SA S-SSS)、R o sen b erg 自尊量表对陕西省114名聋生进行问卷调查。研究显示,歧视知觉、社会适应均与自尊呈显著正相关,歧视知觉对社会适应具有正向预测作用;自尊在聋生歧视知觉与社会适应间起中介作用。因此,聋生歧视知觉不仅对社会适应有具有直接的影响,还可以通过自尊间接影响社会适应。%Objective: To explore self-esteem mediated the relationship between perceived discrimination and social in deaf students. Methods: the discrimination perception questionnaire, adolescent social adaptation scale (SAS-SSS), Rosenberg Self-Esteem Scale of Shaanxi Province 114 deaf students conducted a questionnaire survey. Results: perceived discrimination, social adaptation had significant positive correlation with self-esteem, perceived discrimination on social adaptation, which has a positive predictive effect; self esteem between deaf students perceived discrimination and social adaptation play intermediary role. Conclusion: deaf students’perceived discrimination has a direct impact not only on social adaptation, but also by the indirect effects of self-esteem and social adaptation.

  11. Delay Time Analysis of Reconfigurable Firewall Unit

    Directory of Open Access Journals (Sweden)

    Tomoaki Sato

    2012-10-01

    Full Text Available A firewall function is indispensable for mobile devices and it demands low-power operations. To realize this demand, the authors have developed a firewall unit with a reconfigurable device. The firewall unit needs a large amount of register for the timing adjustment of packets. Using the registers is the cause of power consumption. In this paper, to solve the problem of power consumption, the firewall unit has developed by using wave-pipelining technique and detailed delay time for the technique is analyzed.

  12. Delay-independent stabilization for teleoperation with time varying delay

    OpenAIRE

    Fujita, Hiroyuki; Namerikawa, Toru

    2009-01-01

    This paper deals with the stability for nonlinear teleoperation with time varying communication delays. The proposed method is passivity-based controllers with time varying gains which depend on the rate of change of time varying delay. In our proposed method, stability condition is independent of the magnitude of the communication delay and the damping of the system. The delay-independent stability is shown via Lyapunov stability methods. Several experimental results show the effectiveness o...

  13. Characterization of delay propagation in the airport network

    CERN Document Server

    Fleurquin, Pablo; Eguíluz, Victor M

    2013-01-01

    Complex networks provide a suitable framework to model air traffic. Previous works described the world air-traffic network as a graph with direct flights between airports as edges and passenger commercial airports as vertices. In this work we study the US airport network, in the time period 2005-2011. We characterize the topological structure of the network and identify how the plane rotations adjust to it. The reactionary delays are supposed to propagate following the structure of this network. We analyze the properties of flight delays including the total distribution of delays, the delays per day of the week and the hour-by-hour evolution of the delays within each day. We pay special attention to the long-delayed flights, those accumulating delays longer than 12 hours, and study when and where this type of incidences is most common. The goal of this work is to gain a better understanding of the factors contributing to the reactionary delay propagation with the aim of developing models able to realistically...

  14. [Striated and delayed nephrography].

    Science.gov (United States)

    Marlois, O; Padovani, J; Faure, F; Devred, P; Grangier, M L; Panuel, M

    1985-10-01

    About a case of striated and delayed nephrogram seen on a diabetic child, authors come back to the different etiologies. Among them, the tubular precipitation of Tamm-Horsfall protein seems to be given like on the right possibilities. Whatever is its etiology, the mechanism of striated appearance is always the same, being founded on the radiated disposal of the collecting ducts and on a tubular stasis beeing with iodine concentration.

  15. Theoretical Delay Time Distributions

    CERN Document Server

    Nelemans, Gijs; Bours, Madelon

    2012-01-01

    We briefly discuss the method of population synthesis to calculate theoretical delay time distributions of type Ia supernova progenitors. We also compare the results of the different research groups and conclude that although one of the main differences in the results for single degenerate progenitors is the retention efficiency with which accreted hydrogen is added to the white dwarf core, this cannot explain all the differences.

  16. Theoretical Delay Time Distributions

    Science.gov (United States)

    Nelemans, Gijs; Toonen, Silvia; Bours, Madelon

    2013-01-01

    We briefly discuss the method of population synthesis to calculate theoretical delay time distributions of Type Ia supernova progenitors. We also compare the results of different research groups and conclude that, although one of the main differences in the results for single degenerate progenitors is the retention efficiency with which accreted hydrogen is added to the white dwarf core, this alone cannot explain all the differences.

  17. Geometric Time Delay Interferometry

    OpenAIRE

    Vallisneri, Michele

    2005-01-01

    The space-based gravitational-wave observatory LISA, a NASA-ESA mission to be launched after 2012, will achieve its optimal sensitivity using Time Delay Interferometry (TDI), a LISA-specific technique needed to cancel the otherwise overwhelming laser noise in the inter-spacecraft phase measurements. The TDI observables of the Michelson and Sagnac types have been interpreted physically as the virtual measurements of a synthesized interferometer. In this paper, I present Geometric TDI, a new an...

  18. Time-Delay Interferometry

    OpenAIRE

    Dhurandhar Sanjeev V.; Tinto Massimo

    2005-01-01

    Equal-arm interferometric detectors of gravitational radiation allow phase measurements many orders of magnitude below the intrinsic phase stability of the laser injecting light into their arms. This is because the noise in the laser light is common to both arms, experiencing exactly the same delay, and thus cancels when it is differenced at the photo detector. In this situation, much lower level secondary noises then set overall performance. If, however, the two arms have different lengths (...

  19. Adjustment Criteria in Causal Diagrams: An Algorithmic Perspective

    CERN Document Server

    Textor, Johannes

    2012-01-01

    Identifying and controlling bias is a key problem in empirical sciences. Causal diagram theory provides graphical criteria for deciding whether and how causal effects can be identified from observed (nonexperimental) data by covariate adjustment. Here we prove equivalences between existing as well as new criteria for adjustment and we provide a new simplified but still equivalent notion of d-separation. These lead to efficient algorithms for two important tasks in causal diagram analysis: (1) listing minimal covariate adjustments (with polynomial delay); and (2) identifying the subdiagram involved in biasing paths (in linear time). Our results improve upon existing exponential-time solutions for these problems, enabling users to assess the effects of covariate adjustment on diagrams with tens to hundreds of variables interactively in real time.

  20. Delay in atomic photoionization

    CERN Document Server

    Kheifets, A S

    2010-01-01

    We analyze the time delay between emission of photoelectrons from the outer valence $ns$ and $np$ sub-shells in noble gas atoms following absorption of an attosecond XUV pulse. By solving the time dependent Schr\\"odinger equation and carefully examining the time evolution of the photoelectron wave packet, we establish the apparent "time zero" when the photoelectron leaves the atom. Various processes such as elastic scattering of the photoelectron on the parent ion and many-electron correlation affect the quantum phase of the dipole transition matrix element, the energy dependence of which defines the emission timing. This qualitatively explains the time delay between photoemission from the $2s$ and $2p$ sub-shells of Ne as determined experimentally by attosecond streaking [{\\em Science} {\\bf 328}, 1658 (2010)]. However, with our extensive numerical modeling, we were only able to account for less than a half of the measured time delay of $21\\pm5$~as. We argue that the XUV pulse alone cannot produce such a larg...

  1. Time-Delay Interferometry

    Directory of Open Access Journals (Sweden)

    Massimo Tinto

    2014-08-01

    Full Text Available Equal-arm detectors of gravitational radiation allow phase measurements many orders of magnitude below the intrinsic phase stability of the laser injecting light into their arms. This is because the noise in the laser light is common to both arms, experiencing exactly the same delay, and thus cancels when it is differenced at the photo detector. In this situation, much lower level secondary noises then set the overall performance. If, however, the two arms have different lengths (as will necessarily be the case with space-borne interferometers, the laser noise experiences different delays in the two arms and will hence not directly cancel at the detector. In order to solve this problem, a technique involving heterodyne interferometry with unequal arm lengths and independent phase-difference readouts has been proposed. It relies on properly time-shifting and linearly combining independent Doppler measurements, and for this reason it has been called time-delay interferometry (TDI. This article provides an overview of the theory, mathematical foundations, and experimental aspects associated with the implementation of TDI. Although emphasis on the application of TDI to the Laser Interferometer Space Antenna (LISA mission appears throughout this article, TDI can be incorporated into the design of any future space-based mission aiming to search for gravitational waves via interferometric measurements. We have purposely left out all theoretical aspects that data analysts will need to account for when analyzing the TDI data combinations.

  2. Longitudinal Associations Between Humor Styles and Psychosocial Adjustment in Adolescence

    Directory of Open Access Journals (Sweden)

    Claire Louise Fox

    2016-08-01

    Full Text Available This study assessed the concurrent and prospective associations between psychosocial adjustment and four humor styles, two of which are adaptive (affiliative, self-enhancing and two maladaptive (aggressive, self-defeating. Participants were 1,234 adolescents (52% female aged 11-13 years, drawn from six secondary schools in England. Self-reports of psychosocial adjustment (loneliness, depressive symptomatology, and self-esteem and humor styles were collected at two time points (fall and summer. In cross-lagged panel analyses, self-defeating humor was associated with an increase in both depressive symptoms and loneliness, and with a decrease in self-esteem. In addition, depressive symptoms predicted an increase in the use of self-defeating humor over time, indicating that these may represent a problematic spiral of thoughts and behaviors. Self-esteem was associated with an increase in the use of affiliative humor over the school year but not vice-versa. These results inform our understanding of the ways in which humor is associated with psychosocial adjustment in adolescence.

  3. Optimism and suicide risk:self-esteem mediation role and life events adjustment role%乐观与自杀风险:自尊的中介作用和生活事件的调节作用

    Institute of Scientific and Technical Information of China (English)

    于洪苏; 赵久波; 张小远; 吴萌菁; 丁思远; 贾莹; 徐少飞

    2015-01-01

    Objective To explore the mediating role of self-esteem in optimism and suicidal risks,and the moderate effect of life events in optimism,suicidal risk and self-esteem.Methods 1 750 college students were surveyed with the life orientation test-revised (LOT-R),the suicidal behaviors questionnaire-revised (SBQ-R),rosenberg self-esteem scale(SES) and adolescent self-rating life events check list (ASLEC).Results The total scores of SBQ-R,LOT-R,SES and ASLEC of college students were (4.78±2.10),(23.17±3.22),(29.58±4.43)and (36.54±21.73).Optimism scores were negatively correlated with suicidal risk scores(r=-0.23,P<0.01),optimism scores were positively correlated with self-esteem (r=0.50,P<0.01).Scores of self-esteem scales were negatively correlated with suicidal risk scores(r=-0.35,P<0.01).A structure equation model consists of optimism,self-esteem,suicidal risk and it had a better degree of fitting (the path form optimism to suicidal risk were r =-0.05,P<0.05,RMSEA =0.05,GFI =0.90,NFI =0.92,CFI =0.93).The relationship between optimism and suicide risk were mediated by self-esteem(P<0.01),which accounted for 76%of the total effects.The life events' moderating effects between self-esteem and suicide risk were significant(P<0.01).Conclusion Self-esteem has a significant correlation with optimism and suicidal behaviors,self-esteem plays an intermediary role between optimism and suicidal behaviors,and life events play an regulation role between self-esteem and suicidal behaviors.%目的 探讨自尊在乐观与自杀风险之间的中介作用,以及生活事件在这三者关系中的调节作用,为自杀危机干预提供依据.方法 采用乐观量表、自杀行为问卷、自尊量表以及青少年生活事件量表调查1 750名大学生.结果 大学生自杀风险、乐观、自尊和生活事件的得分分别为(4.78±2.10)分、(23.17±3.22)分、(29.58±4.43)分和(36.54±21.73)分.乐观与自杀风险呈显著负相关(r=-0.23,P<0.01);

  4. Delayed Speech or Language Development

    Science.gov (United States)

    ... to 2-Year-Old Delayed Speech or Language Development KidsHealth > For Parents > Delayed Speech or Language Development ... child is right on schedule. Normal Speech & Language Development It's important to discuss early speech and language ...

  5. Adjusting Curricular Design to

    Directory of Open Access Journals (Sweden)

    Ryan Egan

    2011-12-01

    Full Text Available Developing learners’ ability to self-regulate their own learning has been an ideal sought after by researchers and practitioners alike. Over the past 40 years a plethora of educational psychology research on self-regulated learning (SRL has flooded the literature. In this article I attempt to consolidate key theories from this literature base and propose a 6-point strategy to CREATE a culture of SRL. I will argue that instructors must communicate proximal and long-term goals that have been negotiated by a community of learners, substantially reward all positive aspects of the learning process, judge and reward the learning process by assigning elaborative learning assessments, realistically attribute success and failure to appropriate processes, and tune ineffective strategies and goals to allow the curriculum to evolve in accordance with learner difficulty and success.Enseigner aux apprenants la capacité d’autoréguler leur propre apprentissage est un idéal que poursuivent les chercheurs et les praticiens. Au cours des quarante dernières années, il y a eu surabondance d’études sur l’autorégulation de l’apprentissage dans la littérature sur la psychologie de l’éducation. Dans cet article, l’auteur tente de regrouper les principales théories tirées de cette documentation et de proposer une stratégie composée de six éléments contribuant à la création d’une culture de l’autorégulation. Il soutient que les enseignants doivent communiquer les objectifs à court et à long terme convenus par les apprenants, reconnaître de façon marquée tous aspects positifs du processus d’apprentissage, évaluer et reconnaître ce processus en donnant des travaux élaborés afin de mesurer l’apprentissage, attribuer de façon réaliste les succès et les échecs aux processus appropriés et adapter les stratégies et buts inefficaces afin de permettre l’évolution du curriculum en tenant compte des difficultés et des r

  6. A new surface acoustic wave (SAW) delay line sensor

    Science.gov (United States)

    Jha, Shashank S.; Yadava, R. D. S.

    2013-06-01

    We propose a new configuration for SAW chemical sensing. A polymer coated SAW delay line device provides the coupling for synchronization of two stable self-sustained limit cycle oscillators. The dependence of synchronization frequency on the SAW delay time has been made the basis for chemical sensing. The analysis has carried out under conditions of weak phase coupling [1]. The dependence of synchronization modes on coupling parameters is analyzed. The sensitivity of a synchronization branch for vapor sorption induced delay perturbations is analyzed. This analysis shows the possibility of realizing high performance SAW sensors by this approach.

  7. Time-delayed electromagnetic radiation reaction

    CERN Document Server

    Faci, Sofiane

    2016-01-01

    The Lorentz-Abraham-Dirac (LAD) equation has proved valuable in describing the motion of radiating electric charges but suffers from runaway, pre-acceleration and other ambiguities. The usual scheme is problematic because of locality, which leads to self-interaction with the propagating radiation (i.e. real photons). Instead, the present heuristic model relies on an infinitesimal time delay between the action of external forces and the inertial reaction by the charge. This yields a new and pathology-free equation of motion whereas the radiated energy-momentum is expressed as an infinite series that generalises Larmor's formula and leads to testable predictions using current and near future ultra-intense lasers. The time-delay hypothesis is to be put in parallel with recently observed delays of order $10^{-18}$s (attosecond) in photoemission by atoms and small molecules. Such behaviour is extended here to elementary charges which are supposed to exhibit delays given by the time taken by light to cross the char...

  8. The Association between Body Image and Adjustment in Adolescents

    Directory of Open Access Journals (Sweden)

    Mohammadreza Tamannaeifar

    2012-09-01

    Full Text Available Background: Over the past decades a large amount of research has been done on body image of adolescents. The motivation for this new surge is based on its effect on their functions and behaviors. The aim of this study was to investigate relationship between body image and adjustment in both sexes. Materials and Methods: The subjects of the study included 400 male and female students of high school selected by cluster sampling. Information was gathered using Physical Self-Description Questionnaire and Bell Adjustment Inventory. Data were analyzed using Pearson correlation coefficient and stepwise regression analysis.Results: Results indicated that there was significant relationship between body image and adjustment in both sexes.Conclusion: In general, findings demonstrate that positive body image lead to high self worth and adjustive behaviors in both sexes.

  9. Retrospektive Anpassung der Selbsteinschätzung ärztlicher Kompetenzen – Beachtenswert bei der Evaluation praktischer Weiterbildungskurse [Retrospective adjustment of self-assessed medical competencies – noteworthy in the evaluation of postgraduate practical training courses

    Directory of Open Access Journals (Sweden)

    Nagler, Michael

    2012-05-01

    Full Text Available [english] Aim: The efficacy of postgraduate practical training courses is frequently evaluated by self-assessment instruments. The present study analyses the effect of a basic course in laparoscopic surgery on self-assessed medical competencies.Methods: The 3-day course included teaching of knowledge and training of practical skills. In relation to course evaluation, a questionnaire for self-assessment was applied Results: 89 out of 110 participants (81% attending 10 courses completed all the questionnaires; 83% were postgraduate trainees in surgery and 82% were inexperienced as an independent surgeon. At the beginning of the course most trainees rated themselves as 'moderately competent' or 'fully competent' with respect to the various task levels as well as to specific areas of medical competencies. At the end of the course however pronounced retrospective revisions of self-assessment to lower ratings became apparent. Statistically significant differences were seen for the task 'performing surgical procedures under supervision' and for most of the practical skills trained during the course (p <0.01. In contrast, no significant differences were observed for knowledge taught during the course as well as for 'ability to work in a team' and 'ability to concentrate', which were not foci of the course.Conclusions: Surgeons with little experience change their self-assessment of pre-course competencies to a lower level after participation in a practical postgraduate training course. Evaluations comparing 'pre-course' and 'post-course' ratings only – without 'retrospective pre-course' ratings – may underestimate the training effects. This phenomenon needs to be taken into account when evaluations are dependent exclusively on self-assessment instruments.[german] Zielsetzung: Die Wirksamkeit von praktischen Weiterbildungskursen wird häufig mittels Selbsteinschätzungsinstrumenten evaluiert. Diese Studie analysiert den Effekt eines Basiskurses in

  10. Postservice Psychosocial Adjustment of Former Spinal Cord Injured Rehabilitation Clients. Research Report.

    Science.gov (United States)

    Cook, Daniel W.

    A study examined the long-term adjustment of spinal cord-injured vocational rehabilitation clients by isolating major dimensions of postservice adjustment, correlating preservice status with adjustment followup, and by measuring client pre- to postservice psychological change. Three self-report instruments (a needs satisfaction inventory, a goal…

  11. Delay Choice vs. Delay Maintenance: Different Measures of Delayed Gratification in Capuchin Monkeys (Cebus apella)

    Science.gov (United States)

    Addessi, Elsa; Paglieri, Fabio; Beran, Michael J.; Evans, Theodore A.; Macchitella, Luigi; De Petrillo, Francesca; Focaroli, Valentina

    2013-01-01

    Delaying gratification involves two components: (i) delay choice (selecting a delayed reward over an immediate one), and (ii) delay maintenance (sustaining the decision to delay gratification even if the immediate reward is available during the delay). In primates, two tasks most commonly have explored these components, the Intertemporal choice task and the Accumulation task. It is unclear whether these tasks provide equivalent measures of delay of gratification. Here, we compared the performance of the same capuchin monkeys, belonging to two study populations, between these tasks. We found only limited evidence of a significant correlation in performance. Consequently, in contrast to what is often assumed, our data provide only partial support to the hypothesis that these tasks provide equivalent measures of delay of gratification. PMID:23544770

  12. A high-resolution time interpolator based on a delay locked loop and an RC delay line

    CERN Document Server

    Mota, M

    1999-01-01

    An architecture for a time interpolation circuit with an rms error of ~25 ps has been developed in a 0.7- mu m CMOS technology. It is based on a delay locked loop (DLL) driven by a 160-MHz reference clock and a passive RC delay line controlled by an autocalibration circuit. Start-up calibration of the RC delay line is performed using code density tests (CDT). The very small temperature/voltage dependence of R and C parameters and the self calibrating DLL results in a low- power, high-resolution time interpolation circuit in a standard digital CMOS technology. (11 refs).

  13. Delaying information search

    Directory of Open Access Journals (Sweden)

    Yaniv Shani

    2012-11-01

    Full Text Available In three studies, we examined factors that may temporarily attenuate information search. People are generally curious and dislike uncertainty, which typically encourages them to look for relevant information. Despite these strong forces that promote information search, people sometimes deliberately delay obtaining valuable information. We find they may do so when they are concerned that the information might interfere with future pleasurable activities. Interestingly, the decision to search or to postpone searching for information is influenced not only by the value and importance of the information itself but also by well-being maintenance goals related to possible detrimental effects that negative knowledge may have on unrelated future plans.

  14. Adjustment computations spatial data analysis

    CERN Document Server

    Ghilani, Charles D

    2011-01-01

    the complete guide to adjusting for measurement error-expanded and updated no measurement is ever exact. Adjustment Computations updates a classic, definitive text on surveying with the latest methodologies and tools for analyzing and adjusting errors with a focus on least squares adjustments, the most rigorous methodology available and the one on which accuracy standards for surveys are based. This extensively updated Fifth Edition shares new information on advances in modern software and GNSS-acquired data. Expanded sections offer a greater amount of computable problems and their worked solu

  15. Metric-adjusted skew information

    DEFF Research Database (Denmark)

    Liang, Cai; Hansen, Frank

    2010-01-01

    We give a truly elementary proof of the convexity of metric-adjusted skew information following an idea of Effros. We extend earlier results of weak forms of superadditivity to general metric-adjusted skew information. Recently, Luo and Zhang introduced the notion of semi-quantum states on a bipa......We give a truly elementary proof of the convexity of metric-adjusted skew information following an idea of Effros. We extend earlier results of weak forms of superadditivity to general metric-adjusted skew information. Recently, Luo and Zhang introduced the notion of semi-quantum states...

  16. Convexity Adjustments for ATS Models

    DEFF Research Database (Denmark)

    Murgoci, Agatha; Gaspar, Raquel M.

    Practitioners are used to value a broad class of exotic interest rate derivatives simply by preforming for what is known as convexity adjustments (or convexity corrections). We start by exploiting the relations between various interest rate models and their connections to measure changes. As a re......Practitioners are used to value a broad class of exotic interest rate derivatives simply by preforming for what is known as convexity adjustments (or convexity corrections). We start by exploiting the relations between various interest rate models and their connections to measure changes....... As a result we classify convexity adjustments into forward adjustments and swaps adjustments. We, then, focus on affine term structure (ATS) models and, in this context, conjecture convexity adjustments should be related of affine functionals. In the case of forward adjustments, we show how to obtain exact...... formulas. Concretely for LIBOR in arrears (LIA) contracts, we derive the system of Riccatti ODE-s one needs to compute to obtain the exact adjustment. Based upon the ideas of Schrager and Pelsser (2006) we are also able to derive general swap adjustments useful, in particular, when dealing with constant...

  17. Adjusting Population Risk for Functional Health Status.

    Science.gov (United States)

    Fuller, Richard L; Hughes, John S; Goldfield, Norbert I

    2016-04-01

    Risk adjustment accounts for differences in population mix by reducing the likelihood of enrollee selection by managed care plans and providing a correction to otherwise biased reporting of provider or plan performance. Functional health status is not routinely included within risk-adjustment methods, but is believed by many to be a significant enhancement to risk adjustment for complex enrollees and patients. In this analysis a standardized measure of functional health was created using 3 different source functional assessment instruments submitted to the Medicare program on condition of payment. The authors use a 5% development sample of Medicare claims from 2006 and 2007, including functional health assessments, and develop a model of functional health classification comprising 9 groups defined by the interaction of self-care, mobility, incontinence, and cognitive impairment. The 9 functional groups were used to augment Clinical Risk Groups, a diagnosis-based patient classification system, and when using a validation set of 100% of Medicare data for 2010 and 2011, this study found the use of the functional health module to improve the fit of observed enrollee cost, measured by the R(2) statistic, by 5% across all Medicare enrollees. The authors observed complex nonlinear interactions across functional health domains when constructing the model and caution that functional health status needs careful handling when used for risk adjustment. The addition of functional health status within existing risk-adjustment models has the potential to improve equitable resource allocation in the financing of care costs for more complex enrollees if handled appropriately. (Population Health Management 2016;19:136-144).

  18. Mexican-Origin Parents’ Work Conditions and Adolescents’ Adjustment

    Science.gov (United States)

    Wheeler, Lorey A.; Updegraff, Kimberly A.; Crouter, Ann

    2015-01-01

    Mexican-origin parents’ work experiences are a distal extra-familial context for adolescents’ adjustment. This two-wave multi-informant study examined the prospective mechanisms linking parents’ work conditions (i.e., self-direction, work pressure, workplace discrimination) to adolescents’ adjustment (i.e., educational expectations, depressive symptoms, risky behavior) across the transition to high school drawing on work socialization and spillover models. We examined the indirect effects of parental work conditions on adolescent adjustment through parents’ psychological functioning (i.e., depressive symptoms, role overload) and aspects of the parent-adolescent relationship (i.e., parental solicitation, parent-adolescent conflict), as well as moderation by adolescent gender. Participants were 246 predominantly immigrant, Mexican-origin, two-parent families who participated in home interviews when adolescents were approximately 13 and 15 years of age. Results supported the positive impact of fathers’ occupational self-direction on all three aspects of adolescents’ adjustment through decreased father-adolescent conflict, after controlling for family socioeconomic status and earner status, and underemployment. Parental work pressure and discrimination were indirectly linked to adolescents’ adjustment, with different mechanisms emerging for mothers and fathers. Adolescents’ gender moderated the associations between fathers’ self-direction and girls’ depressive symptoms, and fathers’ experiences of discrimination and boys’ risk behavior. Results suggest that Mexican-origin mothers’ and fathers’ perceptions of work conditions have important implications for multiple domains of adolescents’ adjustment across the transition to high school. PMID:25938710

  19. Mexican-origin parents' work conditions and adolescents' adjustment.

    Science.gov (United States)

    Wheeler, Lorey A; Updegraff, Kimberly A; Crouter, Ann

    2015-06-01

    Mexican-origin parents' work experiences are a distal extrafamilial context for adolescents' adjustment. This 2-wave multiinformant study examined the prospective mechanisms linking parents' work conditions (i.e., self-direction, work pressure, workplace discrimination) to adolescents' adjustment (i.e., educational expectations, depressive symptoms, risky behavior) across the transition to high school drawing on work socialization and spillover models. We examined the indirect effects of parental work conditions on adolescent adjustment through parents' psychological functioning (i.e., depressive symptoms, role overload) and aspects of the parent-adolescent relationship (i.e., parental solicitation, parent-adolescent conflict), as well as moderation by adolescent gender. Participants were 246 predominantly immigrant, Mexican-origin, 2-parent families who participated in home interviews when adolescents were approximately 13 and 15 years of age. Results supported the positive impact of fathers' occupational self-direction on all 3 aspects of adolescents' adjustment through decreased father-adolescent conflict, after controlling for family socioeconomic status and earner status, and underemployment. Parental work pressure and discrimination were indirectly linked to adolescents' adjustment, with different mechanisms emerging for mothers and fathers. Adolescents' gender moderated the associations between fathers' self-direction and girls' depressive symptoms, and fathers' experiences of discrimination and boys' risk behavior. Results suggest that Mexican-origin mothers' and fathers' perceptions of work conditions have important implications for multiple domains of adolescents' adjustment across the transition to high school. (c) 2015 APA, all rights reserved).

  20. 新西兰岩石百合中两种共存的繁育策略:延迟自动自交和欺骗传粉吸引%Coexistence of Delayed Autonomous Self-pollination and Deceptive Pollination in Arthropodium cirratum (Asparagaceae)

    Institute of Scientific and Technical Information of China (English)

    周伟; 李德铢; 王红

    2012-01-01

    延迟自动自交和欺骗传粉吸引在被子植物多数类群中有相关报道,但是至今没有发现两种繁育策略在同一物种中共存现象.本研究通过对照试验检测新西兰岩石百合雄蕊附属物和花冠闭合运动是否分别具有欺骗吸引和延迟自交功能.研究结果表明,新西兰岩石百合黄色的雄蕊附属物拟态花粉(或花药),约93%的昆虫访花行为源自黄色花药附属物的欺骗吸引,雄蕊附属物的报酬拟态功能有效提高昆虫拜访频率并促进异交.同时,研究发现新西兰岩石百合花期结束时花瓣闭合促使雌雄隔离距离的缩小,花瓣自然闭合的花朵平均结籽数(20.62)显著高于闭合前去雄处理花朵(11.79).我们的结果表明延迟自动自交与欺骗传粉吸引两种繁育策略在新西兰岩石百合中共存.%Delayed autonomous pollination and deceptive pollination are assumed to be relatively common in flowering plants,but no species have been reported to use both of these cunning reproductive strategies.In this study,we examined whether delayed selfing and mimicry were used concurrently in Arthropodium cirratum.Flowers ofA.cirratum were manipulated to assess whether their stamen appendages and corolla closing movements were functional in deceptive pollination and delayed selfing,respectively.Our results indicated that anther or pollen imitation of the yellow stamen appendages contributed to 93 per cent of successful mimetic attraction,and this mimicry was an important driver of cross-pollination of the species.In addition,we observed closure of the perianth relocated the stamens over the stigma at the end of anthesis,which significantly increased the average seed number per fruit of intact flowers over flowers emasculated before closure ( 20.62 versus 11.79).Our findings confirmed the coexistence of delayed autonomous self-pollination and deceptive pollination in A.cirratum.Our results also suggested that delayed selfing could add

  1. Self-initiated expatriates

    DEFF Research Database (Denmark)

    Selmer, Jan; Lauring, Jakob

    2014-01-01

    by further studies, this exploratory research project may contribute to the understanding of the adjustment of adult third-culture kids as well as the role of experience and multicultural abilities. Few, if any, prior studies, have examined adjustment of this group of self-initiated expatriates....

  2. Pseudotumoral delayed cerebral radionecrosis

    Energy Technology Data Exchange (ETDEWEB)

    Ciaudo-Lacroix, C.; Lapresle, J. (Centre Hospitalier de Bicetre, 94 - Le Kremlin-Bicetre (France))

    1985-01-01

    A 60 year-old woman with a scalp epithelioma underwent radiotherapy, the dose being 57 Gray. A first epileptic seizure occurred twenty months later. Neurological examination revealed signs of left hemisphere involvement. ..gamma..EG, angiography, CT scans, demonstrated a pseudotumoral avascular process. On account of the localisation, the patient being right-handed, no surgical procedure was performed. In spite of corticotherapy and anticonvulsive treatment, seizures recurred and neurological signs slowly progressed. The patient died, 22 months after the first seizure, of an associated disseminated carcinoma with cachexia. Neuropathological examination showed a massive lesion presenting all the features of delayed radionecrosis in the left hemisphere: situated mainly in the white matter; numerous vascular abnormalities; wide-spread demyelination; disappearance of oligoglial cells. The Authors recall the clinical and anatomical aspects of this condition for which the only successful treatment is surgical removal when location and size of the lesion permit. Finally, the mechanisms which have been proposed to explain this delayed cerebral radionecrosis are discussed.

  3. Epidemiology of delayed ejaculation.

    Science.gov (United States)

    Di Sante, Stefania; Mollaioli, Daniele; Gravina, Giovanni Luca; Ciocca, Giacomo; Limoncin, Erika; Carosa, Eleonora; Lenzi, Andrea; Jannini, Emmanuele A

    2016-08-01

    A large body of literature on diminished ejaculatory disorders has been generated without the use of a clear diagnostic definition. Many studies have not distinguished between the orgasm and ejaculation disorders leading to doubtful results. Delayed ejaculation (DE) is one of the diminished ejaculatory disorders, which range from varying delays in ejaculatory latency to a complete inability to ejaculate. The present review is aimed at providing a comprehensive overview of the current knowledge on the definition and epidemiology of diminished ejaculatory disorders. We focus on the acquired diseases, such as benign prostatic hyperplasia (BPH) and specific drug regimens that may cause an iatrogenic form of ejaculatory disorder. In addition, the impact of aging is discussed since the prevalence of DE appears to be moderately but positively related to age. Finally, we also focus on the importance of the hormonal milieu on male ejaculation. To date, evidence on the endocrine control of ejaculation is derived from small clinical trials, but the evidence suggests that hormones modulate the ejaculatory process by altering its overall latency.

  4. Various Forms of Project Delay in the Construction Industry

    Directory of Open Access Journals (Sweden)

    Nurbasirah Mohamed Alias

    2013-09-01

    Full Text Available Project delay can be defined as an incident that causes extended time in order to complete all or part of a particular project successfully. In other words, delay is the time overrun, either ahead of the date for project completion specified by the contract or further than the extensive contract period where an addition of time has been granted. It should be pointed out that the project delay in the construction industry is a universal or large-scale observable fact affecting not only the construction industry but the overall economy of countries too. As far as world construction industry is concerned, project delays are common problems in the construction industries; particularly most common is in the housing development industries. This paper will present different types of project delay that took place around the world. Project delay involves diverse complicated issues all of which are continuously of crucial importance to the parties to the construction contract. These issues concern right to convalesce costs of the project delay or the need to lengthen the project with the considerable right to recovery costs for adjustments to the contract schedules.

  5. 基于模糊自适应控制的自调节单车仿真研究%Simulation and research on self-adjusting single car based on fuzzy adaptive control

    Institute of Scientific and Technical Information of China (English)

    焦凤娇; 刘富广; 李广伟

    2013-01-01

      自适应模糊控制器可以自动调整PID的参数,以便在短时间内,单车试验器以最快的响应速度,使各种不同容积列车的排风曲线跟踪理想排风曲线,使其分别满足各种车型的测试要求。通过Simulink仿真可以看出,在制动部分容积发生改变后,系统的鲁棒性强,运行状态良好,达到了设计要求。%The adaptive fuzzy controller can automatically adjust the PID parameters so that the single car test can make different volume train exhaust curve of tracking the ideal exhaust curves to meet the test requirements of various types of cars in short time. Through the Simulink simulation results show that the robustness of the system is enhanced and running in good condition to achieve the design requirements after the brake part volume changing.

  6. When Can Insurers Offer Products That Dominate Delayed Old-Age Pension Benefit Claiming?

    NARCIS (Netherlands)

    Sanders, E.A.T.; De Waegenaere, A.M.B.; Nijman, T.E.

    2010-01-01

    It is common practice for public pension schemes to offer individuals the option to delay benefit claiming until after the normal retirement age and adjust the annual benefit level as a result. This adjustment is often not actuarially neutral with respect to the age at which benefits are claimed. Th

  7. Spousal Adjustment to Myocardial Infarction.

    Science.gov (United States)

    Ziglar, Elisa J.

    This paper reviews the literature on the stresses and coping strategies of spouses of patients with myocardial infarction (MI). It attempts to identify specific problem areas of adjustment for the spouse and to explore the effects of spousal adjustment on patient recovery. Chapter one provides an overview of the importance in examining the…

  8. A complete generalized adjustment criterion

    NARCIS (Netherlands)

    Perković, Emilija; Textor, Johannes; Kalisch, Markus; Maathuis, Marloes H.

    2015-01-01

    Covariate adjustment is a widely used approach to estimate total causal effects from observational data. Several graphical criteria have been developed in recent years to identify valid covariates for adjustment from graphical causal models. These criteria can handle multiple causes, latent confound

  9. Paternal Lake Ontario fish consumption and risk of conception delay, New York state angler cohort

    Energy Technology Data Exchange (ETDEWEB)

    Buck, G.M.; Mendola, P.; Vena, J.E.; Kostyniak, P.; Greizerstein, H.; Olson, J.; Stephen, F.D. [State Univ. of New York, Buffalo, NY (United States). Dept. of Social and Preventive Medicine; Sever, L.E. [Battelle, Seattle, WA (United States). Centers for Public Health and Evaluation

    1999-02-01

    The aquatic ecosystems of the Great Lakes are contaminated with a variety of compounds, some of which are considered reproductive toxicants. Few studies of paternal fish consumption and reproductive endpoints have been undertaken and serve as the impetus for study. Standardized telephone interviews were conducted with 2,445 female members of the New York State Angler Cohort (82% response) to update reproductive profiles and to ascertain specific information on time-to-pregnancy (TTP). The study sample includes women with a known TTP and paternal fish consumption data (n = 785). Conception delay was defined as more than 12 cycles of unprotected intercourse to achieve pregnancy. Paternal fish consumption was assessed by three measures: frequency of Lake Ontario sport fish meals in 1991, numbers of years eating fish, and estimated PCB exposure from fish consumption. Adjusted ORs for number of fish meals, based on logistic regression, ranged from 0.69 to 0.80; from 0.61 to .82 for number of years eating fish; and from 0.44 to 1.14 for quartiles of estimated PCB exposure from fish consumption. All confidence intervals included one. These findings suggest that, based on paternal self-reports, Lake Ontario fish consumption does not increase the risk of conception delay.

  10. Stability and delay sensitivity of neutral fractional-delay systems

    Science.gov (United States)

    Xu, Qi; Shi, Min; Wang, Zaihua

    2016-08-01

    This paper generalizes the stability test method via integral estimation for integer-order neutral time-delay systems to neutral fractional-delay systems. The key step in stability test is the calculation of the number of unstable characteristic roots that is described by a definite integral over an interval from zero to a sufficient large upper limit. Algorithms for correctly estimating the upper limits of the integral are given in two concise ways, parameter dependent or independent. A special feature of the proposed method is that it judges the stability of fractional-delay systems simply by using rough integral estimation. Meanwhile, the paper shows that for some neutral fractional-delay systems, the stability is extremely sensitive to the change of time delays. Examples are given for demonstrating the proposed method as well as the delay sensitivity.

  11. Bayes linear covariance matrix adjustment

    CERN Document Server

    Wilkinson, Darren J

    1995-01-01

    In this thesis, a Bayes linear methodology for the adjustment of covariance matrices is presented and discussed. A geometric framework for quantifying uncertainties about covariance matrices is set up, and an inner-product for spaces of random matrices is motivated and constructed. The inner-product on this space captures aspects of our beliefs about the relationship between covariance matrices of interest to us, providing a structure rich enough for us to adjust beliefs about unknown matrices in the light of data such as sample covariance matrices, exploiting second-order exchangeability and related specifications to obtain representations allowing analysis. Adjustment is associated with orthogonal projection, and illustrated with examples of adjustments for some common problems. The problem of adjusting the covariance matrices underlying exchangeable random vectors is tackled and discussed. Learning about the covariance matrices associated with multivariate time series dynamic linear models is shown to be a...

  12. Parental Divorce and Children's Adjustment.

    Science.gov (United States)

    Lansford, Jennifer E

    2009-03-01

    This article reviews the research literature on links between parental divorce and children's short-term and long-term adjustment. First, I consider evidence regarding how divorce relates to children's externalizing behaviors, internalizing problems, academic achievement, and social relationships. Second, I examine timing of the divorce, demographic characteristics, children's adjustment prior to the divorce, and stigmatization as moderators of the links between divorce and children's adjustment. Third, I examine income, interparental conflict, parenting, and parents well-being as mediators of relations between divorce and children's adjustment. Fourth, I note the caveats and limitations of the research literature. Finally, I consider notable policies related to grounds for divorce, child support, and child custody in light of how they might affect children s adjustment to their parents divorce.

  13. Relations of growth in effortful control to family income, cumulative risk, and adjustment in preschool-age children.

    Science.gov (United States)

    Lengua, Liliana J; Moran, Lyndsey; Zalewski, Maureen; Ruberry, Erika; Kiff, Cara; Thompson, Stephanie

    2015-05-01

    The study examined growth in effortful control (executive control, delay ability) in relation to income, cumulative risk (aggregate of demographic and psychosocial risk factors), and adjustment in 306 preschool-age children (50 % girls, 50 % boys) from families representing a range of income (29 % at- or near-poverty; 28 % lower-income; 25 % middle-income; 18 % upper-income), with 4 assessments starting at 36-40 month. Income was directly related to levels of executive control and delay ability. Cumulative risk accounted for the effects of income on delay ability but not executive control. Higher initial executive control and slope of executive control and delay ability predicted academic readiness, whereas levels, but not growth, of executive control and delay ability predicted social competence and adjustment problems. Low income is a marker for lower effortful control, which demonstrates additive or mediating effects in the relation of income to children's preschool adjustment.

  14. Microresonator and associated method for producing and controlling photonic signals with a photonic bandgap delay apparatus

    Science.gov (United States)

    Fork, Richard Lynn (Inventor); Jones, Darryl Keith (Inventor); Keys, Andrew Scott (Inventor)

    2000-01-01

    By applying a photonic signal to a microresonator that includes a photonic bandgap delay apparatus having a photonic band edge transmission resonance at the frequency of the photonic signal, the microresonator imparts a predetermined delay to the photonic signal. The photonic bandgap delay apparatus also preferably has a photonic band edge transmission resonance bandwidth which is at least as wide as the bandwidth of the photonic signal such that a uniform delay is imparted over the entire bandwidth of the photonic signal. The microresonator also includes a microresonator cavity, typically defined by a pair of switchable mirrors, within which the photonic bandgap delay apparatus is disposed. By requiring the photonic signal to oscillate within the microresonator cavity so as to pass through the photonic bandgap delay apparatus several times, the microresonator can controllably impart an adjustable delay to the photonic signal.

  15. Delay tolerant networks protocols and applications

    CERN Document Server

    Vasilakos, Athanasios V; Spyropoulos, Thrasyvoulos

    2011-01-01

    Delay Tolerant Networks (DTN) - which include terrestrial mobile networks, exotic media networks, ad-hoc networks, and sensor networks - are becoming more important and may not be well served by the current end-to-end TCP/IP model. This book provides a self-contained, one-stop reference for researchers and practitioners who are looking toward the future of networking. The text presents a systematic exploration of DTN concepts, architectures, protocols, enabling technologies, and applications. It also discusses various challenges associated with DTN. The author includes a wealth of illustrative

  16. Small delay approximation of stochastic delay differential equations

    Science.gov (United States)

    Guillouzic, Steve; L'heureux, Ivan; Longtin, André

    1999-04-01

    Delay differential equations evolve in an infinite-dimensional phase space. In this paper, we consider the effect of external fluctuations (noise) on delay differential equations involving one variable, thus leading to univariate stochastic delay differential equations (SDDE's). For small delays, a univariate nondelayed stochastic differential equation approximating such a SDDE is presented. Another approximation, complementary to the first, is also obtained using an average of the SDDE's drift term over the delayed dynamical variable, which defines a conditional average drift. This second approximation is characterized by the fact that the diffusion term is identical to that of the original SDDE. For small delays, our approach yields a steady-state probability density and a conditional average drift which are in close agreement with numerical simulations of the original SDDE. We illustrate this scheme with the delayed linear Langevin equation and a stochastic version of the delayed logistic equation. The technique can be used with any type of noise, and is easily generalized to multiple delays.

  17. Delayed breast implant reconstruction

    DEFF Research Database (Denmark)

    Hvilsom, Gitte B.; Hölmich, Lisbet R.; Steding-Jessen, Marianne

    2011-01-01

    the period 1999 to 2006; 239 one-stage procedures and 353 two-stage procedures. The postoperative course through November 2009 was evaluated by cumulative incidence adjusting for competing risks for the selected outcomes; hematoma, infection, seroma, implant rupture, severe capsular contracture (modified.......7% for severe capsular contracture, 32.3% for displacement/asymmetry of the implant and 38.6% for reoperation. When comparing one- and two-stage procedures, we observed significantly higher risk estimates for infection, seroma and extrusion of the implant following two-stage procedures, whereas the risk...

  18. Delay tolerant networks

    CERN Document Server

    Gao, Longxiang; Luan, Tom H

    2015-01-01

    This brief presents emerging and promising communication methods for network reliability via delay tolerant networks (DTNs). Different from traditional networks, DTNs possess unique features, such as long latency and unstable network topology. As a result, DTNs can be widely applied to critical applications, such as space communications, disaster rescue, and battlefield communications. The brief provides a complete investigation of DTNs and their current applications, from an overview to the latest development in the area. The core issue of data forward in DTNs is tackled, including the importance of social characteristics, which is an essential feature if the mobile devices are used for human communication. Security and privacy issues in DTNs are discussed, and future work is also discussed.

  19. Mortality tempo-adjustment: An empirical application

    Directory of Open Access Journals (Sweden)

    Marc Luy

    2006-12-01

    Full Text Available The number of scholars following the tempo approach in fertility continues to grow, whereas tempo-adjustment in mortality generally still is rejected. This rejection is irrational in principle, as the basic idea behind the tempo approach is independent of the kind of demographic event. Providing the first empirical application to a substantial problem, this paper shows that mortality tempo-adjustment can paint a different picture of current mortality conditions compared to conventional life expectancy. An application of the Bongaarts and Feeney method to the analysis of mortality differences between western and eastern Germany shows that the eastern German disadvantages still are considerably higher and that the mortality gap between the two entities began to narrow some years later than trends in conventional life expectancy suggest. Thus, the picture drawn by tempo-adjusted life expectancy fits the expected trends of changing mortality and also the self-reported health conditions of eastern and western Germans better than that painted by conventional life expectancy.

  20. The Marshmallow Test: Delay of Gratification and Independent Rule Compliance

    OpenAIRE

    Saxler, Patricia Kasak

    2016-01-01

    The Marshmallow Test, a self-imposed delay of gratification task pioneered by Walter Mischel in the 1960’s, showed that young children vary in their ability to inhibit impulses and regulate their attention and emotion in order to wait and obtain a desired reward (Mischel & Mischel, 1983). The Marshmallow Test offers an opportunity to observe and measure children’s decision-making and self-regulation in an emotionally charged context of often conflicting motivations. Additionally, this task p...

  1. A generalized trigonometric series function model for determining ionospheric delay

    Institute of Scientific and Technical Information of China (English)

    YUAN Yunbin; OU Jikun

    2004-01-01

    A generalized trigonometric series function (GTSF) model, with an adjustable number of parameters, is proposed and analyzed to study ionosphere by using GPS, especially to provide ionospheric delay correction for single frequency GPS users. The preliminary results show that, in comparison with the trigonometric series function (TSF) model and the polynomial (POLY) model, the GTSF model can more precisely describe the ionospheric variation and more efficiently provide the ionospheric correction when GPS data are used to investigate or extract the earth's ionospheric total electron content. It is also shown that the GTSF model can further improve the precision and accuracy of modeling local ionospheric delays.

  2. Cavity QED based tuneable, delayed-choice quantum eraser

    Science.gov (United States)

    Imran, Muhammad; Abbas, Tasawar; -ul-Islam, Rameez; Ikram, Manzoor

    2016-01-01

    We propose an experimentally feasible idea for the delayed-choice quantum eraser, having adjustable path distinguishability/fringe visibility. The schematics are based on resonant, dispersive and Ramsey interactions of atoms under cavity QED scenario. The option for tuneability of the fringes in a delayed-choice setup stringently marks the conception of the time in the quantum theory, operational meanings of the state vector reduction and raises questions about Ψ-ontic models while helping to shed out the controversies surrounding the quantum eraser theme. The proposal can be efficiently executed experimentally within the prevailing cavity QED experimental research scenario with good overall success probability and fidelity.

  3. On the Gravitomagnetic Time Delay

    OpenAIRE

    Ciufolini, I.; Kopeikin, S.; Mashhoon, B.; Ricci, F

    2002-01-01

    We study the gravitational time delay in ray propagation due to rotating masses in the linear approximation of general relativity. Simple expressions are given for the gravitomagnetic time delay that occurs when rays of radiation cross a slowly rotating shell and propagate in the field of a distant rotating source. Moreover, we calculate the local gravitational time delay in the Goedel universe. The observational consequences of these results in the case of weak gravitational lensing are disc...

  4. Demographic determinants of delayed divorce.

    Science.gov (United States)

    Chan, L Y; Heaton, T B

    1989-01-01

    This study identifies factors that predict delayed divorce in the US. The findings show that factors which influence marital stability in general also correlate with delayed divorce in the same direction. Wife's age at marriage, age of the youngest child, wife's religion, region of residence, and metropolitan residence have substantial effects of delayed divorce, but the effects of race, parental divorce, premarital pregnancy, and socioeconomic status are small.

  5. Location Estimation using Delayed Measurements

    DEFF Research Database (Denmark)

    Bak, Martin; Larsen, Thomas Dall; Nørgård, Peter Magnus

    1998-01-01

    When combining data from various sensors it is vital to acknowledge possible measurement delays. Furthermore, the sensor fusion algorithm, often a Kalman filter, should be modified in order to handle the delay. The paper examines different possibilities for handling delays and applies a new techn...... technique to a sensor fusion system for estimating the location of an autonomous guided vehicle. The system fuses encoder and vision measurements in an extended Kalman filter. Results from experiments in a real environment are reported...

  6. Delay and Secrecy

    DEFF Research Database (Denmark)

    Czarnitzki, Dirk; Grimpe, Christoph; Toole, Andrew A.

    The viability of modern open science norms and practices depend on public disclosure of new knowledge, methods, and materials. Aggregate data from the OECD show a broad shift in the institutional financing structure that supports academic research from public to private sponsorship. This paper...... examines the relationship between industry sponsorship and restrictions on disclosure using individual-level data on German academic researchers. Accounting for self-selection into extramural sponsorship, our evidence strongly supports the perspective that industry sponsorship jeopardizes public disclosure...

  7. Delay and Secrecy

    DEFF Research Database (Denmark)

    Czarnitzki, Dirk; Grimpe, Christoph; Toole, Andrew A.

    2015-01-01

    The viability of modern open science norms and practices depend on public disclosure of new knowledge, methods, and materials. Aggregate data from the OECD show a broad shift in the institutional financing structure that supports academic research from public to private sponsorship. This article...... examines the relationship between industry sponsorship and restrictions on disclosure using individual-level data on German academic researchers. Accounting for self-selection into extramural sponsorship, our evidence strongly supports the perspective that industry sponsorship jeopardizes public disclosure...

  8. 三种根管预备器械预备根管根尖碎屑推出量和根管清理能力的比较%Self-adjusting files, ProTaper Next and ProTaper Universal:a comparative study of root canal cleanness and the amount of apically extruded debris during root canal preparation

    Institute of Scientific and Technical Information of China (English)

    伍婉翠; 陈广盛

    2015-01-01

    BACKGROUND:Amount of debris extruded apicaly is an important indicator to evaluate the effect of root canal preparation instrument. Studies have shown that debris extruded apicaly can cause post-treatment pain, and thus, reducing the amount of debris extruded apicaly can decrease the incidence of post-treatment pain. OBJECTIVE:To compare the root canal cleanness and the amount of apicaly extruded debris during root canal preparation with Self-adjusting files, ProTaper Next and ProTaper Universal. METHODS:Forty-five premolars with single canal were divided into three groups randomly, and then prepared by Self-adjusting files, ProTaper Next and ProTaper Universal, respectively. Debris extruded apicaly was colected, dried and weighed. Then roots were longitudinaly sectioned and observed under scanning electronic microscope to evaluate the cleanness of the root canal. RESULTS AND CONCLUSION:The amount of apicaly extruded debris in the ProTaper Universal group was significantly higher than that in the Self-adjusting files group and ProTaper Next group (P 0.05). Scores on debris and smear layer were lower in the group of Self-adjusting files than the groups of ProTaper Next and ProTaper Universal (P 0.05). These findings indicate that the Self-adjusting files and ProTaper Next can extrude less debris beyond the apical foramen, which may decrease the incidence of post-treatment pain. Cleaning ability of Self-adjusting files is better than ProTaper Next and ProTaper Universal.%背景:根尖碎屑推出量是评价根管预备器械预备效果的一项重要指标。研究表明,推出根尖孔的碎屑将引起根管治疗后疼痛,减少根尖区碎屑的推出可降低术后疼痛发生率。目的:比较新型镍钛器械自调节根管锉、ProTaper Next和传统镍钛器械ProTaper Universal预备人下颌单根管前磨牙的根尖碎屑推出量和根管清理能力。方法:将45颗离体人下颌单根管前磨牙随机均分为3组,分别使用新

  9. Concurrent Delay in Construction Disputes

    DEFF Research Database (Denmark)

    Cavaleri, Sylvie Cécile

    period of delay can potentially be attributed to several events falling within both parties' spheres of responsibility, commonly termed concurrent delay, is rarely regulated in construction contracts in spite of its common occurrence. This book analyses both the theoretical foundations and the practical......Delay is one of the issues most frequently encountered in today’s construction industry; it causes significant economic damage to all parties involved. Construction contracts, standard and bespoke, almost invariably consider delay from a perspective of single liability. If the event causing...

  10. Time Delay of CGM Sensors

    Science.gov (United States)

    Schmelzeisen-Redeker, Günther; Schoemaker, Michael; Kirchsteiger, Harald; Freckmann, Guido; Heinemann, Lutz; del Re, Luigi

    2015-01-01

    Background: Continuous glucose monitoring (CGM) is a powerful tool to support the optimization of glucose control of patients with diabetes. However, CGM systems measure glucose in interstitial fluid but not in blood. Rapid changes in one compartment are not accompanied by similar changes in the other, but follow with some delay. Such time delays hamper detection of, for example, hypoglycemic events. Our aim is to discuss the causes and extent of time delays and approaches to compensate for these. Methods: CGM data were obtained in a clinical study with 37 patients with a prototype glucose sensor. The study was divided into 5 phases over 2 years. In all, 8 patients participated in 2 phases separated by 8 months. A total number of 108 CGM data sets including raw signals were used for data analysis and were processed by statistical methods to obtain estimates of the time delay. Results: Overall mean (SD) time delay of the raw signals with respect to blood glucose was 9.5 (3.7) min, median was 9 min (interquartile range 4 min). Analysis of time delays observed in the same patients separated by 8 months suggests a patient dependent delay. No significant correlation was observed between delay and anamnestic or anthropometric data. The use of a prediction algorithm reduced the delay by 4 minutes on average. Conclusions: Prediction algorithms should be used to provide real-time CGM readings more consistent with simultaneous measurements by SMBG. Patient specificity may play an important role in improving prediction quality. PMID:26243773

  11. Concurrent Delay in Construction Disputes

    DEFF Research Database (Denmark)

    Cavaleri, Sylvie Cécile

    Delay is one of the issues most frequently encountered in today’s construction industry; it causes significant economic damage to all parties involved. Construction contracts, standard and bespoke, almost invariably consider delay from a perspective of single liability. If the event causing...... period of delay can potentially be attributed to several events falling within both parties' spheres of responsibility, commonly termed concurrent delay, is rarely regulated in construction contracts in spite of its common occurrence. This book analyses both the theoretical foundations and the practical...

  12. Rethinking low extra delay background transport protocols

    CERN Document Server

    Carofiglio, Giovanna; Rossi, Dario; Testa, Claudio; Valenti, Silvio

    2010-01-01

    BitTorrent has recently introduced LEDBAT, a novel application-layer congestion control protocol for data exchange. The protocol design starts from the assumption that network bottlenecks are at the access of the network, and that thus user traffic competes creating self-inducing congestion. To relieve from this phenomenon, LEDBAT is designed to quickly infer that self-induced congestion is approaching (by detecting relative changes of the one-way delay in the transmission path), and to react by reducing the sending rate prior that congestion occurs. Prior work has however shown LEDBAT to be affected by a latecomer advantage, where newly arriving connections can starve already existing flows. In this work, we propose modifications to the congestion window update mechanism of the LEDBAT protocol that aim at solving this issue, guaranteeing thus intra-protocol fairness and efficiency. Closed-form expressions for the stationary throughput and queue occupancy are provided via a fluid model, whose accuracy is conf...

  13. 高校青年女教师职业初期发展问题的特殊性与自我调适%Specificity and Self-adjustment of Young Female College Teachers’ Development in Their Early Career

    Institute of Scientific and Technical Information of China (English)

    关健

    2016-01-01

    高校青年女教师的成长是伴随其职业生涯发展过程进行的。从发展总趋势看,她们是一个能不断追求和实现职业发展的群体,但发展过程中的不同时期却有着各自的特点。而职业初期是其职业生涯发展的关键期,入职年龄及性别特点使其职初期发展问题极具特殊性,职业生涯起步阶段充满困难和艰辛。深入分析其特殊问题的成因,厘清其负面影响所及,探求其自我调适之策,有利于优化她们的职业发展进程,助推她们在职业初期实现职业发展。%The growth of young female college teachers is accompanied by the development process of their ca-reer. From the general trend of development, they are a group that can pursue and realize the professional devel-opment, but the development process has its own characteristics. The early career is the critical period of their de-velopment of careers, the entry age and gender characteristics that make it very special nature of early career, so that the initial stage of their career is full of difficulties and hardships. Careful analysis of the causes of its special problems, to clarify its negative impact, to explore its self adaptation strategy, is conducive to optimize their ca-reer development process, boost their career development in the early career.

  14. Complex Time-Delay Systems Theory and Applications

    CERN Document Server

    Atay, Fatihcan M

    2010-01-01

    Time delays in dynamical systems arise as an inevitable consequence of finite speeds of information transmission. Realistic models increasingly demand the inclusion of delays in order to properly understand, analyze, design, and control real-life systems. The goal of this book is to present the state-of-the-art in research on time-delay dynamics in the framework of complex systems and networks. While the mathematical theory of delay equations is quite mature, its application to the particular problems of complex systems and complexity is a newly emerging field, and the present volume aims to play a pioneering role in this perspective. The chapters in this volume are authored by renowned experts and cover both theory and applications in a wide range of fields, with examples extending from neuroscience and biology to laser physics and vehicle traffic. Furthermore, all chapters include sufficient introductory material and extensive bibliographies, making the book a self-contained reference for both students and ...

  15. Recovery from Multiple APAs Delays Gait Initiation in Parkinson’s Disease

    Science.gov (United States)

    Cohen, Rajal G.; Nutt, John G.; Horak, Fay B.

    2017-01-01

    Background: Freezing of gait in Parkinson’s disease (PD) has been linked with deficits in inhibitory control, but causal mechanisms are not established. Freezing at gait initiation (start hesitation) is often accompanied by multiple anticipatory postural adjustments (APAs). If inhibition deficits contribute to freezing by interfering with ability to inhibit initial weight shifts in the wrong direction, then PD subjects should experience more episodes of multiple APAs than healthy controls (HCs) do. If inhibition deficits contribute to freezing by interfering with ability to release a previously inhibited step following multiple APAs, then step onset following multiple APAs should be delayed more in people with PD than in HCs. Methods: Older adults with PD and HC subjects rapidly initiated stepping in response to a light cue in blocks of simple (SRT) and choice (CRT) conditions. We recorded kinematics and ground reaction forces, and we administered the Stroop task to assess inhibitory control. Results: Multiple APAs were more common in CRT than SRT conditions but were equally common in HC and PD subjects. Step onsets were delayed in both conditions and further delayed in trials with multiple APAs, except for HC subjects in SRT trials. Poor Stroop performance correlated with many multiple APAs, late step onset, and rearward position of center of mass (COM) at cue presentation. Forward motion of the COM during the APA was higher in trials with multiple APAs than in trials with single APAs, especially in CRT trials and in PD subjects without self-reported freezing. Conclusion: Start hesitation is not caused by multiple APAs per se, but may be associated with difficulty recovering from multiple APAs, due to difficulty releasing a previously inhibited step. PMID:28261073

  16. Adjustable Induction-Heating Coil

    Science.gov (United States)

    Ellis, Rod; Bartolotta, Paul

    1990-01-01

    Improved design for induction-heating work coil facilitates optimization of heating in different metal specimens. Three segments adjusted independently to obtain desired distribution of temperature. Reduces time needed to achieve required temperature profiles.

  17. Household Adjustments to Hurricane Katrina

    National Research Council Canada - National Science Library

    Meri Davlasheridze; Qin Fan

    2017-01-01

    This paper examines household adjustments to Hurricane Katrina by estimating the effects of Katrina-induced damages on changes in household demographics and income distributions in the Orleans Parish...

  18. Yuan Exchange Rate 'Properly Adjusted'

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

      The currency exchange rate was "properly adjusted" this year and takes into account effects on the country's neighbors and the world, Premier Wen Jiabao said at a regional meeting in Malaysia.……

  19. Time-adjusted variable resistor

    Science.gov (United States)

    Heyser, R. C.

    1972-01-01

    Timing mechanism was developed effecting extremely precisioned highly resistant fixed resistor. Switches shunt all or portion of resistor; effective resistance is varied over time interval by adjusting switch closure rate.

  20. Delay of Gratification: A Comparison Study of Children with Down Syndrome, Moderate Intellectual Disability and Typical Development

    Science.gov (United States)

    Cuskelly, M.; Gilmore, L.; Glenn, S.; Jobling, A.

    2016-01-01

    Background: Self-regulation has been found to be an important contributor to a range of outcomes, with delay of gratification (a self-regulatory skill) predicting better academic, social and personal functioning. There is some evidence that individuals with Down syndrome have difficulty with delay of gratification. We investigated the question of…

  1. Culture and Parenting: Psychological Adjustment among Chinese Canadian Adolescents

    Science.gov (United States)

    Yoo, Cynthia S. M.; Miller, Lynn D.

    2011-01-01

    This study examined the relationships between adolescents' cultural identification, perceptions of maternal and paternal parenting, and psychological adjustment with a sample of 192 Chinese Canadian adolescents. Participants were recruited from public urban high schools and completed 4 self-report questionnaires. Data were analyzed using…

  2. The Moderating Effect of Sense of Coherence on Work Adjustment.

    Science.gov (United States)

    Strauser, David R.; Lustig, Daniel C.

    2003-01-01

    Examines the relationship between sense of coherence and a model of work adjustment, specifically, the individual domains of work personality and work competencies. Results indicated a medium relationship between sense of coherence and the Work Personality Profile Self-Report, with sense of coherence accounting for 18% of the variance. (Contains…

  3. Initial symptoms and delay in patients with penile carcinoma.

    Science.gov (United States)

    Skeppner, Elisabet; Andersson, Swen-Olof; Johansson, Jan-Erik; Windahl, Torgny

    2012-10-01

    This study aimed to assess initial symptoms and factors associated with patients' and doctors' delay in penile carcinoma. Fifty consecutive patients with penile carcinoma treated with an organ-sparing technique and nine with partial amputation were enrolled in a prospective study at the Department of Urology, Örebro University Hospital, between 2005 and 2009. Face-to-face structured interviews in combination with self-assessment forms were used for the patients' descriptions of clinical symptoms, treatment seeking and reasons for delay. Data were also extracted from the medical records confirming time-lag between GP assessment, specialist care and time for diagnosis. Erythema, rash and eczema were the most common initial symptoms (35%). In total, 65% had a patients' delay of more than 6 months, and among these there was a small, but not statistically significant, predominance for pT1 and pTis tumours. Living with a stable partner did not affect the delay. The most common reason for patients' delay was the feeling of embarrassment over symptoms localized in a sexual body area. Nine patients had a doctors' delay of more than 3 months from first special visit to diagnosis. Eight of these patients consulted dermatologists and were subjected to repeated biopsies, leaving premalignant results. A considerable proportion of the patients had a patients' delay of more than 6 months, perhaps due to benign initial symptoms as erythema, rash or eczema. Psychological factors such as embarrassment and denial may also be involved, as well as insufficient awareness or knowledge.

  4. Predicting school adjustment from multiple perspectives on parental behaviors.

    Science.gov (United States)

    Ratelle, Catherine F; Duchesne, Stéphane; Guay, Frédéric

    2017-01-01

    Past research supported the importance of parental autonomy support, involvement, and structure for student outcomes. The goal of this study was to test the contribution of these behaviors from mothers and fathers in predicting adolescents' adjustment in school using a multi-informant approach. A sample of 522 adolescents (233 boys, 389 girls), their mothers (n = 535), and fathers (n = 296) participated in the study. Results revealed that parents' self-evaluations explained additional variance in children's school adjustment, over and beyond the contribution of children's evaluation of their parents. Maternal reports on their positive behaviors (autonomy support, involvement, and structure) predicted their child's academic and emotional adjustment while their reported control predicted lower levels of these. Fathers' self-reported positive behaviors predicted academic adjustment while their control predicted lower academic and personal-emotional adjustment. These findings support the importance of multiple assessments of parental behaviors for improving the prediction of adjustment in school. Copyright © 2016 The Foundation for Professionals in Services for Adolescents. Published by Elsevier Ltd. All rights reserved.

  5. Exploring Mexican American adolescent romantic relationship profiles and adjustment.

    Science.gov (United States)

    Moosmann, Danyel A V; Roosa, Mark W

    2015-08-01

    Although Mexican Americans are the largest ethnic minority group in the nation, knowledge is limited regarding this population's adolescent romantic relationships. This study explored whether 12th grade Mexican Americans' (N = 218; 54% female) romantic relationship characteristics, cultural values, and gender created unique latent classes and if so, whether they were linked to adjustment. Latent class analyses suggested three profiles including, relatively speaking, higher, satisfactory, and lower quality romantic relationships. Regression analyses indicated these profiles had distinct associations with adjustment. Specifically, adolescents with higher and satisfactory quality romantic relationships reported greater future family expectations, higher self-esteem, and fewer externalizing symptoms than those with lower quality romantic relationships. Similarly, adolescents with higher quality romantic relationships reported greater academic self-efficacy and fewer sexual partners than those with lower quality romantic relationships. Overall, results suggested higher quality romantic relationships were most optimal for adjustment. Future research directions and implications are discussed.

  6. Analysis and optimization of RC delay in vertical nanoplate FET

    Science.gov (United States)

    Woo, Changbeom; Ko, Kyul; Kim, Jongsu; Kim, Minsoo; Kang, Myounggon; Shin, Hyungcheol

    2017-10-01

    In this paper, we have analyzed short channel effects (SCEs) and RC delay with Vertical nanoplate FET (VNFET) using 3-D Technology computer-aided design (TCAD) simulation. The device is based on International Technology Road-map for Semiconductor (ITRS) 2013 recommendations, and it has initially gate length (LG) of 12.2 nm, channel thickness (Tch) of 4 nm, and spacer length (LSD) of 6 nm. To obtain improved performance by reducing RC delay, each dimension is adjusted (LG = 12.2 nm, Tch = 6 nm, LSD = 11.9 nm). It has each characteristic in this dimension (Ion/Ioff = 1.64 × 105, Subthreshold swing (S.S.) = 73 mV/dec, Drain-induced barrier lowering (DIBL) = 60 mV/V, and RC delay = 0.214 ps). Furthermore, with long shallow trench isolation (STI) length and thick insulator thickness (Ti), we can reduce RC delay from 0.214 ps to 0.163 ps. It is about a 23.8% reduction. Without decreasing drain current, there is a reduction of RC delay as reducing outer fringing capacitance (Cof). Finally, when source/drain spacer length is set to be different, we have verified RC delay to be optimum.

  7. A study on change in the center frequency depending on the fat content and on change in the fat saturation image with the use of a self-manufactured phantom depending on the center frequency adjustment method in an MRI breast scan

    Science.gov (United States)

    Kim, Chang-Bok; Dong, Kyung-Rae; Gho, Hee-Jin; Chung, Woon-Kwan; Joo, Kyu-Ji; Kim, Young-Jae

    2013-12-01

    This study examined the changes in the center frequency according to the fat content the using a self-manufactured phantom. In addition, the change in the fat saturation image according to when the center frequency was applied automatically or adjusted manually was analyzed to determine the importance of a manual adjustment of the center frequency. Distilled water and animal fat were solidified in a 10-ml syringe to manufacture nine phantoms for each condition (18 in total). A MR scanner at 1.5 Tesla was used to obtain a T1-weighted three dimensional fast low-angle shot (T1 3D FLASH) dynamic fat saturation image according to the spectral attenuated inversion recovery(SPAIR) method. The images obtained were classified into the following before analyzing the center frequencies for each image: Test A (image where fat was not saturated), Test B (image where fat was saturated in an automatic adjustment of the center frequency), and Test C (image where fat was saturated in a manual adjustment of the center frequency). The signal intensity (SI) values of water, fat and background were measured to calculate the signal to noise ratio (SNR) before examining the difference in the SNRs of water and fat (SNR difference = water SNR — fat SNR). The mean center frequency in Tests A, B and C was 63.631179 MHz when the fat content was 70% or lower. The mean center frequency for Tests A and B was 63.631002 MHz when the fat content was 80% or higher, which was 226 Hz lower than that for Test C (63.631228 MHz). The water SIs of Tests A, B and C with increasing fat content showed a pattern of change similar to that of the fat SIs of Tests A and C. On the other hand, the fat SI of Test B was similar to that of Test A when the fat content was 80%, which showed a large difference in change. The water SNRs of Tests A, B and C, and the fat SNR and SNR differences of Tests A and C showed similar changes according to the fat content. The difference between the fat SNR and the SNR of Test B

  8. A comparison of the effects of brief rules, a timer, and preferred toys on self-control.

    Science.gov (United States)

    Newquist, Matthew H; Dozier, Claudia L; Neidert, Pamela L

    2012-01-01

    Some children make impulsive choices (i.e., choose a small but immediate reinforcer over a large but delayed reinforcer). Previous research has shown that delay fading, providing an alternative activity during the delay, teaching participants to repeat a rule during the delay, combining delay fading with an alternative activity, and combining delay fading with a countdown timer are effective for increasing self-control (i.e., choosing the large but delayed reinforcer over the small but immediate reinforcer). The purpose of the current study was to compare the effects of various interventions in the absence of delay fading (i.e., providing brief rules, providing a countdown timer during the delay, or providing preferred toys during the delay) on self-control. Results suggested that providing brief rules or a countdown timer during the delay was ineffective for enhancing self-control. However, providing preferred toys during the delay effectively enhanced self-control.

  9. Reflexivity and adjustment strategies at the interfaces

    Directory of Open Access Journals (Sweden)

    Ismael Teomiro

    2011-10-01

    Full Text Available I argue in this work that Reinhart & Reuland’s (1993 conditions A and B hold for Spanish. I provide evidence supporting the hypothesis that this language makes use of both SE and SELF-anaphors. Inherent reflexive verbs undergo an internal argument reduction operation in the lexicon. However, the syntax always requires two arguments. Therefore certain clitics, which are SE-anaphors, are inserted in these derivations. This is a last-resort mechanism that makes an adjustment between the valence of the lexical entry of the verb and the requirements of the syntax in order for the derivation to converge at the C-I interface. These clitics are syntactic arguments. Nevertheless, they are not interpreted as semantic arguments since they violate the double chain condition, which forces nominal elements to share both a tense and thematic features with the verb and the tense heads. Non- inherent reflexive verbs require the presence of a SELF-anaphor, which is formed out of a SE-anaphor along with a protector SELF element. Therefore, both syntactic elements are interpreted as two distinguishable semantic elements at C-I despite the fact that there is binding between them both. The interpretation of both syntactic elements as just one semantic element is a pragmatic epiphenomenon.

  10. Registration Delay and Student Performance

    Science.gov (United States)

    Siefken, Jason

    2017-01-01

    Tracking the difference between the time a first-year student is allowed to register for a course and the time he or she does register for a course (a student's registration delay), we notice a negative correlation between registration delay and final grade in a course. The difference between a student who registers within the first two minutes…

  11. 78 FR 59422 - Delayed Applications

    Science.gov (United States)

    2013-09-26

    ... Pipeline and Hazardous Materials Safety Administration Delayed Applications AGENCY: Office of Hazardous... applications delayed more than 180 days. SUMMARY: In accordance with the requirements of 49 U.S.C. 5117(c), PHMSA is publishing the following list of special permit applications that have been in process for 180...

  12. High resolution digital delay timer

    Science.gov (United States)

    Martin, Albert D.

    1988-01-01

    Method and apparatus are provided for generating an output pulse following a trigger pulse at a time delay interval preset with a resolution which is high relative to a low resolution available from supplied clock pulses. A first lumped constant delay (20) provides a first output signal (24) at predetermined interpolation intervals corresponding to the desired high resolution time interval. Latching circuits (26, 28) latch the high resolution data (24) to form a first synchronizing data set (60). A selected time interval has been preset to internal counters (142, 146, 154) and corrected for circuit propagation delay times having the same order of magnitude as the desired high resolution. Internal system clock pulses (32, 34) count down the counters to generate an internal pulse delayed by an interval which is functionally related to the preset time interval. A second LCD (184) corrects the internal signal with the high resolution time delay. A second internal pulse is then applied to a third LCD (74) to generate a second set of synchronizing data (76) which is complementary with the first set of synchronizing data (60) for presentation to logic circuits (64). The logic circuits (64) further delay the internal output signal (72) to obtain a proper phase relationship of an output signal (80) with the internal pulses (32, 34). The final delayed output signal (80) thereafter enables the output pulse generator (82) to produce the desired output pulse (84) at the preset time delay interval following input of the trigger pulse (10, 12).

  13. Calibrating for Ionospheric Phase Delays

    Science.gov (United States)

    Macdoran, P. F.

    1985-01-01

    Technique determines ionospheric phase delay on real-time universally applicable basis in terms of electrons per meter squared by coherently modulating two L-band carrier frequencies received from two Global Positioning System satelites. Two pseudorandom number sequences cross-correlated to derive delay time.

  14. #FakeNobelDelayReasons

    CERN Multimedia

    2013-01-01

    Tuesday’s hour-long delay of the Nobel Prize in Physics announcement was (and still is) quite the cause for speculation. But on the Twittersphere, it was simply the catalyst for some fantastic puns, so-bad-they're-good physics jokes and other shenanigans. Here are some of our favourite #FakeNobelDelayReasons.    

  15. Imitation dynamics with time delay.

    Science.gov (United States)

    Wang, Shi-Chang; Yu, Jie-Ru; Kurokawa, Shun; Tao, Yi

    2017-05-07

    Based on the classic imitation dynamics (Hofbauer and Sigmund, 1998, Evolutionary Games and Population Dynamics, Cambridge University Press), the imitation dynamics with time delay is investigated, where the probability that an individual will imitate its opponent's own strategy is assumed to depend on the comparison between the past expected payoff of this individual's own strategy and the past expected payoff of its opponent's own strategy, i.e. there is a time delay effect. For the two-phenotype model, we show that if the system has an interior equilibrium and this interior equilibrium is stable when there is no time delay, then there must be a critical value of time delay such that the system tends to a stable periodic solution when the time delay is larger than the critical value. On the other hand, for three-phenotype (rock-scissors-paper) model, the numerical analysis shows that for the stable periodic solution induced by the time delay, the amplitude and the period will increase with the increase of the time delay. These results should help to understand the evolution of behavior based on the imitation dynamics with time delay. Copyright © 2017 Elsevier Ltd. All rights reserved.

  16. Magnetic bearing optical delay line

    NARCIS (Netherlands)

    Dool, T.C. van den; Kamphues, F.G.; Fouss, B.; Henrioulle, K.; Hogenhuis, H.

    2004-01-01

    TNO TPD, in close cooperation with Micromega-Dynamics and Dutch Space, has developed an advanced Optical Delay Line (ODL) for use in PRIMA, GENIE and other ground based interferometers. The delay line design is modular and flexible, which makes scaling for other applications a relatively easy task.

  17. Delay decomposition at a single server queue with constant service time and multiple inputs

    Science.gov (United States)

    Ziegler, C.; Schilling, D. L.

    1978-01-01

    Two network consisting of single server queues, each with a constant service time, are considered. The external inputs to each network are assumed to follow some general probability distribution. Several interesting equivalencies that exist between the two networks considered are derived. This leads to the introduction of an important concept in delay decomposition. It is shown that the waiting time experienced by a customer can be decomposed into two basic components called self-delay and interference delay.

  18. Noise-enhanced phase synchronization in time-delayed systems.

    Science.gov (United States)

    Senthilkumar, D V; Shrii, M Manju; Kurths, J

    2012-02-01

    We investigate the phenomenon of noise-enhanced phase synchronization (PS) in coupled time-delay systems, which usually exhibit non-phase-coherent attractors with complex topological properties. As a delay system is essentially an infinite dimensional in nature with multiple characteristic time scales, it is interesting and crucial to understand the interplay of noise and the time scales in achieving PS. In unidirectionally coupled systems, the response system adjust all its time scales to that of the drive, whereas both subsystems adjust their rhythms to a single (main time scale of the uncoupled system) time scale in bidirectionally coupled systems. We find similar effects for both a common and an independent additive Gaussian noise.

  19. Time-delay damping theory

    Institute of Scientific and Technical Information of China (English)

    洪峰

    2002-01-01

    In this paper, existing damping theories are briefly reviewed. On the basis of the existing damping theories, a new kind of damping theory, i.e., the time-delay damping theory, is developed. In the time-delay damping theory, the damping force is considered to be directly proportional to the increment of displacement. The response analysis of an SDOF time-delay damping system is carried out, and the methods for obtaining the solution for a time-delay damping system in the time domain as well as the frequency domain are given. The comparison between results from different damping theories shows that the time-delay damping theory is both reasonable and convenient.

  20. 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).

  1. Self-Control and Impulsivity in Children: Multiple Behavioral Measures

    Science.gov (United States)

    Forzano, L. B.; Michels, Jennifer L.; Carapella, R. K.; Conway, Patrick; Chelonis, J. J.

    2011-01-01

    The present experiment investigated the relationship between laboratory measures of self-control and delay of gratification in children and explored several other factors that may influence self-control. In the self-control paradigm, 30 four-year-old children repeatedly chose between three reinforcers received after a delay and one reinforcer…

  2. Self-Control and Impulsivity in Children: Multiple Behavioral Measures

    Science.gov (United States)

    Forzano, L. B.; Michels, Jennifer L.; Carapella, R. K.; Conway, Patrick; Chelonis, J. J.

    2011-01-01

    The present experiment investigated the relationship between laboratory measures of self-control and delay of gratification in children and explored several other factors that may influence self-control. In the self-control paradigm, 30 four-year-old children repeatedly chose between three reinforcers received after a delay and one reinforcer…

  3. Delayed Intracerebral Hemorrhage Secondary to Ventriculoperitoneal Shunt

    Science.gov (United States)

    Ma, Li; Chen, Yi-Li; Yang, Shu-Xu; Wang, Yi-Rong

    2015-01-01

    Abstract The ventriculoperitoneal (VP) shunt is a routine procedure for cerebrospinal fluid (CSF) diversion, and is associated with many complications. A delayed hemorrhage after the VP shunt surgery, however, is quite rare. In this study, we report a case involving late-onset hemorrhage. The 67-year-old male patient with a history of head trauma and brain surgery underwent a VP shunt placement for hydrocephalus. The surgery course was uneventful and no bleeding was revealed in the first computed tomographic (CT) scan after the procedure. However, a massive intraparenchymal and intraventricular hemorrhage occurred 8 h following adjustment of the valve system on the 8th day after surgery. Erosion of the vasculature by catheter cannulation and a sudden reduction of CSF pressure after downregulation of the valve could be one of the possible causes of the intracerebral hemorrhage (ICH). PMID:26632700

  4. Improved Conjugate Gradient Bundle Adjustment of Dunhuang Wall Painting Images

    Science.gov (United States)

    Hu, K.; Huang, X.; You, H.

    2017-09-01

    Bundle adjustment with additional parameters is identified as a critical step for precise orthoimage generation and 3D reconstruction of Dunhuang wall paintings. Due to the introduction of self-calibration parameters and quasi-planar constraints, the structure of coefficient matrix of the reduced normal equation is banded-bordered, making the solving process of bundle adjustment complex. In this paper, Conjugate Gradient Bundle Adjustment (CGBA) method is deduced by calculus of variations. A preconditioning method based on improved incomplete Cholesky factorization is adopt to reduce the condition number of coefficient matrix, as well as to accelerate the iteration rate of CGBA. Both theoretical analysis and experimental results comparison with conventional method indicate that, the proposed method can effectively conquer the ill-conditioned problem of normal equation and improve the calculation efficiency of bundle adjustment with additional parameters considerably, while maintaining the actual accuracy.

  5. IMPROVED CONJUGATE GRADIENT BUNDLE ADJUSTMENT OF DUNHUANG WALL PAINTING IMAGES

    Directory of Open Access Journals (Sweden)

    K. Hu

    2017-09-01

    Full Text Available Bundle adjustment with additional parameters is identified as a critical step for precise orthoimage generation and 3D reconstruction of Dunhuang wall paintings. Due to the introduction of self-calibration parameters and quasi-planar constraints, the structure of coefficient matrix of the reduced normal equation is banded-bordered, making the solving process of bundle adjustment complex. In this paper, Conjugate Gradient Bundle Adjustment (CGBA method is deduced by calculus of variations. A preconditioning method based on improved incomplete Cholesky factorization is adopt to reduce the condition number of coefficient matrix, as well as to accelerate the iteration rate of CGBA. Both theoretical analysis and experimental results comparison with conventional method indicate that, the proposed method can effectively conquer the ill-conditioned problem of normal equation and improve the calculation efficiency of bundle adjustment with additional parameters considerably, while maintaining the actual accuracy.

  6. Adult Attachment and Dyadic Adjustment: The Mediating Role of Shame.

    Science.gov (United States)

    Martins, Teresa C; Canavarro, Maria Cristina; Moreira, Helena

    2016-07-03

    Although it is widely recognized that adult attachment is associated with romantic relationship quality, the mechanisms involved remain poorly understood. This study aimed to investigate the mediating role of external and internal shame on the association between attachment and dyadic adjustment. A battery of self-report measures was completed by 228 Portuguese participants and a serial multiple mediation model was tested. Data showed that, in the population under study, attachment dimensions were associated with worse dyadic adjustment through high external and internal shame. Internal shame alone also mediated the association between attachment avoidance and dyadic adjustment. This study identifies a new putative mechanism linking adult attachment and intimate relationship functioning that may be targeted in couples therapy to promote a better dyadic adjustment and relationship functioning.

  7. Autonomous learning by simple dynamical systems with delayed feedback.

    Science.gov (United States)

    Kaluza, Pablo; Mikhailov, Alexander S

    2014-09-01

    A general scheme for the construction of dynamical systems able to learn generation of the desired kinds of dynamics through adjustment of their internal structure is proposed. The scheme involves intrinsic time-delayed feedback to steer the dynamics towards the target performance. As an example, a system of coupled phase oscillators, which can, by changing the weights of connections between its elements, evolve to a dynamical state with the prescribed (low or high) synchronization level, is considered and investigated.

  8. Delayed radiation neuropathy

    Energy Technology Data Exchange (ETDEWEB)

    Nagashima, T.; Miyamoto, K.; Beppu, H.; Hirose, K.; Yamada, K. (Tokyo Metropolitan Neurological Hospital (Japan))

    1981-07-01

    A case of cervical plexus neuropathy was reported in association with chronic radio-dermatitis, myxedema with thyroid adenoma and epiglottic tumor. A 38-year-old man has noticed muscle weakness and wasting of the right shoulder girdle since age 33. A detailed history taking revealed a previous irradiation to the neck because of the cervical lymphadenopathy at age 10 (X-ray 3,000 rads), keroid skin change at age 19, obesity and edema since 26, and hoarseness at 34. Laryngoscopic examination revealed a tumor on the right vocal cord, diagnosed as benign papilloma by histological study. In addition, there were chronic radio-dermatitis around the neck, primary hypothyroidism with a benign functioning adenoma on the right lobe of the thyroid, the right phrenic nerve palsy and the right recurrent nerve palsy. All these lesions were considered to be the late sequellae of radiation to the neck in childhood. Other neurological signs were weakness and amyotrophy of the right shoulder girdle with patchy sensory loss, and areflexia of the right arm. Gross power was fairly well preserved in the right hand. EMG showed neurogenic changes in the tested muscles, suggesting a peripheral nerve lesion. Nerve conduction velocities were normal. No abnormal findings were revealed by myelography and spinal CT. The neurological findings of the patient were compatible with the diagnosis of middle cervical plexus palsy apparently due to late radiation effect. In the literature eight cases of post-radiation neuropathy with a long latency have been reported. The present case with the longest latency after the radiation should be included in the series of the reported cases of ''delayed radiation neuropathy.'' (author).

  9. The nature of adolescent competencies predicted by preschool delay of gratification.

    Science.gov (United States)

    Mischel, W; Shoda, Y; Peake, P K

    1988-04-01

    Delay of gratification, assessed in a series of experiments when the subjects were in preschool, was related to parental personality ratings obtained a decade later for 95 of these children in adolescence. Clear and consistent patterns of correlations between self-imposed delay time in preschool and later ratings were found for both sexes over this time span. Delay behavior predicted a set of cognitive and social competencies and stress tolerance consistent with experimental analyses of the process underlying effective delay in the preschool delay situation. Specifically, children who were able to wait longer at age 4 or 5 became adolescents whose parents rated them as more academically and socially competent, verbally fluent, rational, attentive, planful, and able to deal well with frustration and stress. Comparisons with related longitudinal research using other delay situations help to clarify the important features of the situations and person variables involved in different aspects of delay of gratification.

  10. A Three-Decade Survival Analysis of Intraventricular Conduction Delay in Adults Without Ischemic Heart Disease.

    Science.gov (United States)

    Tiosano, Shmuel; Hod, Hanoch; Oberman, Bernice; Chetrit, Angela; Dankner, Rachel

    2016-11-01

    The prognosis of an incidental finding of intraventricular conduction delay in individuals without ischemic heart disease is debatable. Intraventricular conduction delay presents electrocardiographically as bundle branch block or nonspecific intraventricular conduction delay. We aimed to assess the long-term survival of an incidental intraventricular conduction delay finding in a cohort of individuals without ischemic heart disease, followed up for 3 decades. A randomized stratified cohort of the adult Israeli population underwent medical examinations and electrocardiography between 1976 and 1982. Patients with ischemic heart disease were excluded, and the cohort was followed for all-cause mortality for a median of 30.4 years. Major intraventricular conduction delay was defined as having complete bundle branch block or nonspecific intraventricular conduction delay, and minor intraventricular conduction delay was defined as having incomplete bundle branch block. Cox proportional hazard model was performed, comparing individuals by electrocardiogram finding, adjusting for demographic, clinical, and electrocardiographic variables. Of 2465 subjects, 2385 (96.8%) were without intraventricular conduction delay, 38 (1.5%) had minor intraventricular conduction delay, and 42 (1.7%) had major intraventricular conduction delay. All-cause mortality rates were higher among minor and major intraventricular conduction delay groups (57.9% and 66.7%, P = .43 and P = .04, respectively) compared with no intraventricular conduction delay (52.1%). By controlling for sex, age, and body mass index, intraventricular conduction delay was not associated with all-cause mortality: hazard ratios, 0.82 (95% confidence interval, 0.52-1.25) and 1.06 (95% confidence interval, 0.72-1.54) for minor and major intraventricular conduction delay, respectively. Intraventricular conduction delay was not found to be an independent risk factor for all-cause mortality in individuals without ischemic heart

  11. Psychological adjustment of obese youth presenting for weight management treatment.

    Science.gov (United States)

    Zeller, Meg H; Saelens, Brian E; Roehrig, Helmut; Kirk, Shelley; Daniels, Stephen R

    2004-10-01

    To determine the prevalence of psychological maladjustment in clinic-based treatment-seeking obese children and adolescents (BMI > or = 95th percentile) and the degree to which maternal, demographic, and youth factors correlate to the youths' psychological adjustment. Anthropometrics, demographics (race, sex, insurance status), measures of youth psychological adjustment (self- and mother-report; Behavior Assessment System for Children), and maternal self-report of psychological distress (Symptom Checklist 90-Revised) were collected from 121 obese children and adolescents (55% white, 45% black) and their mothers. Approximately one-third of youths self-reported some psychological maladjustment, but two-thirds of youth were described by their mothers as experiencing some degree of psychological maladjustment. Adjustment difficulties were specific to social functioning, low self-esteem, and internalizing symptoms. Forty-one percent of mothers of child participants and 56% of mothers of adolescent participants reported clinically significant psychological distress. Youth self-report and mother-report of youths' psychological difficulties were often most strongly associated with mothers' level of psychological distress and/or family socioeconomic status rather than to youth characteristics (e.g., percent overweight, race). Psychological maladjustment levels among obese youth and their mothers were higher in this clinic-based sample than in treatment research-based samples. Present correlate findings extended to obese adolescents and reaffirm a potent association between youth self-report of their own psychological adjustment and their mother's level of psychological distress. Demographic characteristics and youth weight status were not consistent correlates of youths' psychological functioning. Findings have implications for the translation of empirically supported pediatric obesity interventions to clinic-based treatment samples.

  12. Model-Based Self-Tuning Multiscale Method for Combustion Control

    Science.gov (United States)

    Le, Dzu, K.; DeLaat, John C.; Chang, Clarence T.; Vrnak, Daniel R.

    2006-01-01

    A multi-scale representation of the combustor dynamics was used to create a self-tuning, scalable controller to suppress multiple instability modes in a liquid-fueled aero engine-derived combustor operating at engine-like conditions. Its self-tuning features designed to handle the uncertainties in the combustor dynamics and time-delays are essential for control performance and robustness. The controller was implemented to modulate a high-frequency fuel valve with feedback from dynamic pressure sensors. This scalable algorithm suppressed pressure oscillations of different instability modes by as much as 90 percent without the peak-splitting effect. The self-tuning logic guided the adjustment of controller parameters and converged quickly toward phase-lock for optimal suppression of the instabilities. The forced-response characteristics of the control model compare well with those of the test rig on both the frequency-domain and the time-domain.

  13. MCCB warm adjustment testing concept

    Science.gov (United States)

    Erdei, Z.; Horgos, M.; Grib, A.; Preradović, D. M.; Rodic, V.

    2016-08-01

    This paper presents an experimental investigation in to operating of thermal protection device behavior from an MCCB (Molded Case Circuit Breaker). One of the main functions of the circuit breaker is to assure protection for the circuits where mounted in for possible overloads of the circuit. The tripping mechanism for the overload protection is based on a bimetal movement during a specific time frame. This movement needs to be controlled and as a solution to control this movement we choose the warm adjustment concept. This concept is meant to improve process capability control and final output. The warm adjustment device design will create a unique adjustment of the bimetal position for each individual breaker, determined when the testing current will flow thru a phase which needs to trip in a certain amount of time. This time is predetermined due to scientific calculation for all standard types of amperages and complies with the IEC 60497 standard requirements.

  14. Robust Self Tuning Controllers

    DEFF Research Database (Denmark)

    Poulsen, Niels Kjølstad

    1985-01-01

    The present thesis concerns robustness properties of adaptive controllers. It is addressed to methods for robustifying self tuning controllers with respect to abrupt changes in the plant parameters. In the thesis an algorithm for estimating abruptly changing parameters is presented. The estimator...... has several operation modes and a detector for controlling the mode. A special self tuning controller has been developed to regulate plant with changing time delay....

  15. Tax Adjusted for Imported Equipment

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    @@ Ministry of Finance, Central Administration of Customs, and State Administration of Taxation of P.R. of China jointly issued a "Notice on the Lists Related to the Interim Provisions on the Adjustment of Import Tax Policy on Major Technical Equipment" (the Notice) on April 13rd to adjust the list of equipment catalog and merchandise attached to the "Interim Provisions on the Import Tax Policy on Major Technical Equipment", as well as the preferential scope and extent of the import tax on a number of major technical equipment.

  16. Time Delay in Molecular Photoionization

    CERN Document Server

    Hockett, P; Villeneuve, D M; Corkum, P B

    2015-01-01

    Time-delays in the photoionization of molecules are investigated. As compared to atomic ionization, the time-delays expected from molecular ionization present a much richer phenomenon, with a strong spatial dependence due to the anisotropic nature of the molecular scattering potential. We investigate this from a scattering theory perspective, and make use of molecular photoionization calculations to examine this effect in representative homonuclear and hetronuclear diatomic molecules, nitrogen and carbon monoxide. We present energy and angle-resolved maps of the Wigner delay time for single-photon valence ionization, and discuss the possibilities for experimental measurements.

  17. Self-Concept and Self-Esteem: A Cross-Cultural Perspective.

    Science.gov (United States)

    Wood, Melinda

    1991-01-01

    Describes issues of self-concept and self-esteem that arise when people find themselves living in a cross-cultural environment. Discusses Western definition of self-concept and other self-concept models. Discusses self-esteem and integration and adjustment as it relates to bicultural persons. (ABL)

  18. Self-Concept and Self-Esteem: A Cross-Cultural Perspective.

    Science.gov (United States)

    Wood, Melinda

    1991-01-01

    Describes issues of self-concept and self-esteem that arise when people find themselves living in a cross-cultural environment. Discusses Western definition of self-concept and other self-concept models. Discusses self-esteem and integration and adjustment as it relates to bicultural persons. (ABL)

  19. Delayed neutron emission near the shell-closures

    Directory of Open Access Journals (Sweden)

    Borzov Ivan

    2016-01-01

    Full Text Available The self-consistent Density Functional + Continuum QRPA approach (DF+CQRPA provides a good description of the recent experimental beta-decay half-lives and delayed neutron emission branchings for the nuclei approaching to (and beyond the neutron closed shells N = 28; 50; 82. Predictions of beta-decay properties are more reliable than the ones of standard global approaches traditionally used for the r-process modelling. An impact of the quasi-particle phonon coupling on the delayed multi-neutron emission rates P2n, P3n,… near the closed shells is also discussed.

  20. Adjustable chain trees for proteins

    DEFF Research Database (Denmark)

    Winter, Pawel; Fonseca, Rasmus

    2012-01-01

    A chain tree is a data structure for changing protein conformations. It enables very fast detection of clashes and free energy potential calculations. A modified version of chain trees that adjust themselves to the changing conformations of folding proteins is introduced. This results in much...