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排序方式: 共有49条查询结果,搜索用时 15 毫秒
1.
Valentine Genon-Catalot Thierry Jeantheau Catherine Laredo 《Scandinavian Journal of Statistics》2003,30(2):297-316
ABSTRACT. This paper develops a new contrast process for parametric inference of general hidden Markov models, when the hidden chain has a non-compact state space. This contrast is based on the conditional likelihood approach, often used for ARCH-type models. We prove the strong consistency of the conditional likelihood estimators under appropriate conditions. The method is applied to the Kalman filter (for which this contrast and the exact likelihood lead to asymptotically equivalent estimators) and to the discretely observed stochastic volatility models. 相似文献
2.
Valentin Fiala Rebecca Paxton Valentine Cadieux Milena Klimek Bernhard Freyer 《Visual Studies》2019,34(4):336-349
Taken-for-granted knowledge about people from other social groups is a key challenge for overcoming stereotypes. This article describes a novel arts-based research method to visualise participants’ frames of distanced social groups and aims to trigger reflections among them. The Reflective Photobooth invites participants to dress up as members of distanced social groups, stage a scene, produce pictures, answer prompting questions, and discuss their visualisations. We argue that the artistic re-enactment that underlies the visualisation process can attract diverse groups of participants to engage with research topics, create places for the articulation of critical statements against existing societal clichés and stereotypical media representations, and trigger reflections among participants about taken-for-granted knowledge. The method was tested within the Frame-a-Farmer project, in which the social distance between consumers and food producers in modern agrifood systems was addressed. Results indicate that despite the method bearing some risks and facing some challenges, three promising areas of future application could be identified: (i) raising awareness among large groups of people, (ii) collecting stories or topical vignettes, and (iii) deconstructing taken-for-granted knowledge and societal clichés. 相似文献
3.
Deborah P. Valentine Sherry Edwards Debra Gohagan Marie Huff Angela Pereira Pamela Wilson 《Journal of Social Work Education》2013,49(2):273-282
The results of a national survey of 51 social work doctoral program directors indicate that, although the majority of doctoral programs include preparation for teaching as a program objective, they offer limited formal course work and few opportunities for supervised teaching experiences. The authors discuss the results of this survey and make recommendations for better preparing social work doctoral students for their roles as teachers. 相似文献
4.
Sarah M. Bankoff PhD Sarah E. Valentine MA Michelle A. Jackson MA Rebecca L. Schacht PhD David W. Pantalone PhD 《Journal of American college health : J of ACH》2013,61(8):468-475
Abstract Objective: To examine correlates of compensatory weight control behaviors among women in transition between adolescence and adulthood. Participants: The authors recruited a sample of undergraduate women (N = 759) at a large northwestern university during the 2009–2010 academic year. Methods: Logistic regression was used to assess relations among childhood abuse, psychosocial functioning, adult dating relationship factors, and women's endorsement of compensatory weight control behaviors. Results: The final model reliably distinguished between participants who endorsed versus denied use of compensatory behaviors (χ2[5, N = 747] = 36.37, p < .001), with global psychosocial functioning and relationship avoidance accounting for the most variance. Conclusions: These findings illustrate the importance of considering childhood abuse histories and adult relationships while assessing young women's compensatory weight control behaviors. 相似文献
5.
James J. Walsh John M. Wilding Michael W. Eysenck John D. Valentine 《Work and stress》2013,27(2):148-159
Abstract The aim of this study was to investigate the relationship between individual differences in personality and susceptibility to stress in the workplace. Stress in lecturers employed by a computer training organization was assessed by means of self-report and measurement of salivary cortisol output during lecturing and non-lecturing weeks. Neuroticism, Type A behaviour pattern and locus of control were measured. Self-reported stress was found to be much greater during lecturing weeks, but cortisol levels were unaffected by working conditions. There was a significant positive correlation between neuroticism and locus of control and a negative correlation between locus of control and Type A behaviour pattern that approached significance. Multiple regression was employed to explore relations between personality and stress. Subjects with lower neuroticism scores yielded a bigger increase in reported stress, in the lecturing compared with the non-lecturing week, than subjects with high neuroticism scores. Type B subjects showed a progressive decrease in cortisol over the working week while Type A counterparts showed a resurgence of cortisol towards the end of the week. Finally, Type B subjects having an internal locus of control showed a faster decline in cortisol level during the lecturing week than the other subjects. Implications of these results are discussed in terms of the importance simultaneously incorporating a variety of individual differences in personality dimensions and stress indices in research designs. 相似文献
6.
7.
Zachary Summerlin Karen Oehme Nat Stern Colby Valentine 《Journal Of Human Behavior In The Social Environment》2013,23(6):762-777
New data from a prevention curriculum project on officer-involved domestic violence reveals significant differences in the reported job stress of Florida's correctional officers when compared to police officers who took the same surveys. The significantly higher reported levels of organizational stress in particular—especially those related to staff and resource shortages and attitudes about leadership—raise concerns about the relationship between organizational stress and the reported drastic budget cuts, hiring freezes, and layoffs experienced by the Department of Corrections in 2009. The surprising disparity has significant implications for policy makers, who should be aware of the high cost of stress in officer health and well-being when making budgetary decisions about the state's rapidly increasing inmate population. 相似文献
8.
This paper describes the use and evaluation of application cards as a teaching tool designed to enhance students' abilities to apply knowledge learned in social work practice classes. Strengths and limitations of this tool as a means for enhancing students' application skills are discussed, based on qualitative and quantitative evaluative data. 相似文献
9.
Massoud Karshenas Valentine M. Moghadam 《International Journal of Social Welfare》2009,18(S1):S52-S61
This article examines the evolution of social policy in the Middle East and North Africa (MENA) during three periods: the post-colonial and oil-boom period, the post-oil period of structural adjustment, and the more recent oil-boom period. Drawing attention to key factors that shaped both social policy and the region's lack of competitiveness during the current global era, the authors argue for a new social development strategy that would put the region back on a growth path, while also recognizing citizen participation and rights. 相似文献
10.
This paper highlights some of the needs of adolescents who have parents with a mental illness and examines the usage of bibliotherapy as a treatment modality. Eleven young adult fiction books are examined and considered for use as a bibliotherapeutic tool among the adolescent audience whose parent suffers from a mental illness. 相似文献