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41.
We develop a class of new multivariate procedures for monitoring quality by detecting a change in the level of a multivariate process. Following the ideas of S.N. Roy, we first consider a linear combination statistic which results from projecting the multivariate observations onto a unit vector and then maximizing a selected univariate statistic over all directions. 相似文献
42.
Kristin E. Yarris Jillian C. Stasiun Visanee V. Musigdilok Cho C. Win 《International migration (Geneva, Switzerland)》2015,53(3):111-123
In this article, we draw on ethnographic interviews with sixteen Karen refugees living in San Diego, California to explore how experiences of exile, displacement, and resettlement differ along generational lines and complicate straightforward dichotomies between “involuntary refugees” and “economic migrants”. While older‐generation Karen experienced political violence and displacement first‐hand, younger‐generation Karen were born in refugee camps in Thailand and usually experienced violence and displacement through its impacts on extended families. Across both generations, Karen exerted agency in exile, displacement, and diaspora. The older generation used stays in refugee camps strategically as a means of economically supporting family members in Burma, while the younger generation view resettlement in the US as a way of achieving educational aspirations. This research points to the importance of generation as a dimension of refugee experience and to the problem of reinforcing victimhood within refugee communities rather than acknowledging refugee agency and resilience. 相似文献
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Jinmyoung Cho Christine Cook Marilyn J. Bruin 《Journal of Housing for the Elderly》2013,27(4):395-412
The purpose of this study was to explore neighborhood resources that influence the housing satisfaction of older adults. The study included 10,146 participants from the 2009 panel of the American Housing Survey who were 65 years and older. Hierarchical regression modeling was performed to examine older adults’ perceptions of neighborhood resources and consequently the role these resources play in predicting housing satisfaction among community dwelling and residents of assisted living, controlling for age, sex, ethnicity, education, and housing maintenance. In addition, three levels of physical functioning among residents of assisted living were examined. Results showed that there were differences in housing satisfaction by residences and levels of physical functioning. Subjective evaluations of neighborhoods and the near surrounds were significant predictors of housing satisfaction. Results of the study suggest that policy makers and housing professionals need to continue to consider the role of supportive neighborhoods and social environments in promoting successful aging particularly for frail older adults. 相似文献
47.
Wendy K. Tam Cho 《Journal of applied statistics》2017,44(16):2908-2922
The underlying statistical concept that animates empirical strategies for extracting causal inferences from observational data is that observational data may be adjusted to resemble data that might have originated from a randomized experiment. This idea has driven the literature on matching methods. We explore an un-mined idea for making causal inferences with observational data – that any given observational study may contain a large number of indistinguishably balanced matched designs. We demonstrate how the absence of a unique best solution presents an opportunity for greater information retrieval in causal inference analysis based on the principle that many solutions teach us more about a given scientific hypothesis than a single study and improves our discernment with observational studies. The implementation can be achieved by integrating the statistical theories and models within a computational optimization framework that embodies the statistical foundations and reasoning. 相似文献
48.
This paper considers the problem of testing parameter constancy in GARCH(1,1) models. A cusum of squares test is propesed in analogy Of Incl´n and Tiao (1394)'s statistic. its limiting distribution is derived via using the invariance principle for mixingaie sequences obtained by McLeish(1975). Simulation results are illustrated to demonstrate the validity of the cusum test. 相似文献
49.
Cho Hyun Park Ji Hoon Song Seung Won Yoon Jungwoo Kim 《Human Resource Development International》2013,16(5):558-574
Interest in psychological ownership (PO) has increased due to its influence on employees’ attitudes and behaviours. This study focuses on PO as a mediator between transformational leadership (TL) and organizational citizenship behaviour (OCB) in the Korean public sector, which does not have employee stock ownership plans (ESOPs). With a total of 214 cases from the Korean public sector, structural equation modelling (SEM) analysis was conducted, and chi-square difference-based model comparison was performed to examine the mediating effect. Results indicated statistically significant relationships between TL and employees’ PO and between employees’ PO and their OCB. A statistically significant full mediating role of PO between TL and OCB in the Korean public sector context was found. 相似文献
50.
Young-Sup Hyun Daeyeon Cho Seung Won Yoon 《Human Resource Development International》2013,16(5):446-463
The present study examined major trends and issues of Human Resource Development (HRD) research in Korean context applying the author co-citation analysis (ACA) to three primary HRD-related journals in South Korea. Following the analyses of author co-citation frequency, correlation matrix, dendrogram, and the multi-dimensional scaling (MDS) map, the results were found as follows: (1) co-citation network identified seven topical clusters (i.e., human competency improvement for young men and e-learning designers, system approach for training effectiveness, competency for executives and HRD-ers, HRD evaluations, HRD solutions, mentoring in career development, leadership, and the role of professionals), (2) competency appeared as a keyword in multiple clusters, (3) unlike HRD in North America or Europe, learning (informal, organizational, self-directed, and lifelong learning) with a variety of HRD solutions comprised the dominant research stream, and (4) research activities for critical issues, such as diversity, development of workforce minority, and international HRD were largely missing. 相似文献