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201.
202.
We consider a new generalization of the skew-normal distribution introduced by Azzalini (1985). We denote this distribution Beta skew-normal (BSN) since it is a special case of the Beta generated distribution (Jones, 2004). Some properties of the BSN are studied. We pay attention to some generalizations of the skew-normal distribution (Bahrami et al., 2009; Sharafi and Behboodian, 2008; Yadegari et al., 2008) and to their relations with the BSN. 相似文献
203.
Scott Fitzgerald Al Rainnie Caleb Goods Lucy Morris 《The Australian journal of social issues》2014,49(4):509-528
Western Australia provides an interesting case study of the outsourcing of human services to the not‐for‐profit (NfP) sector. This article presents and discusses some of the key themes that emerged from a recently completed research project examining one large NfP in Western Australia. Key themes included the recruitment and retention of staff linked to pay and changing funding arrangements, and the sector becoming increasingly corporatised in outlook and goal orientaiton. Despite evidence that the shifting policy and funding environment within the NfP sector has had some negative consequences, the research findings highlight a degree of agency within which organisations can resist or counterbalance these changes. Efforts to avoid this trend, however, are reliant upon a number of factors; for example, a strong commitment to vision and mission supported by skilled leadership and adequate resourcing. Significantly, these factors are unlikely to be readily available, particularly for smaller NfPs. This discrepancy in organisational capacity is set to become more conspicuous with the potential introduction of ‘Big Society’ policies derived from the United Kingdom, and funding cuts proposed by the Coalition government. 相似文献
204.
Monica Boyd 《Demography》1973,10(1):1-17
The relation between career mobility and reproductive behavior is examined for five cities of developing Latin American nations: Bogota, Columbia; San Jose, Costa Rica; Mexico City, Mexico; Panama City, Panama; and Caracas, Venezuela. The data are obtained from fertility surveys conducted between September, 1963, and August, 1964, in the above-named cities under the auspices of the Centro Latinoamericano de Demografía (CELADE), and the analysis is based on information from 600–800 women per city who have been married only once and married ten years or more. Career mobility is defined as an occupational change of the husband between the date of marriage and 1963–1964, based on the Hall-Jones occupational scale. Reproductive behavior is operationalized as the number of live births. The conclusion of the multiple classification analysis is that the process of career mobility in four out of five Latin American samples is not a significant factor in explaining differential reproductive behavior. These results are compatible with a variety of North American studies which stress that variation heretofore ascribed to the process of mobility is an additive composite of past and present status effects. These findings are discussed; a theoretical and methodological critique of mobility-fertility research is presented. 相似文献
205.
The article examines reliability as a key component of the psychometric properties of tests and inventories. What is reliability, types of reliability, why is reliability important, and other reliability issues are addressed in a manner that will help Work readers to better understand and apply psychometric considerations in the context of rehabilitation research. The authors contend that reliability is an essential condition for the psychometric soundness of measurement instruments that are used in rehabilitation research and practice. 相似文献
206.
This article introduces readers to the data analytic sub-paradigm of nonparametric statistics. The authors begin with an explanation of how and under what circumstances nonparametric statistics are used, then describe specific nonparametric techniques which are commonly used in social science research. Examples from the contemporary rehabilitation literature are provided throughout the article. 相似文献
207.
208.
Monica Billio 《Journal of applied statistics》2015,42(5):956-966
In this paper, we propose a new approach for characterizing and testing Granger-causality, which is well equipped to handle models where the change in regime evolves according to multiple Markov chains. Differently from the existing literature, we propose a method for analysing causal links that specifically takes into account Markov chains. Tests for independence are also provided. We illustrate the methodology with an empirical application, and in particular, we investigate the causality and interdependence between financial and economic cycles in USA using the bivariate Markov switching model proposed by Hamilton and Lin [13]. We find that financial variables are useful in forecasting the aggregate economic activity, and vice versa. 相似文献
209.
This study examines whether place of residence is a factor associated with reporting a positive HIV/AIDS, Hepatitis C (HCV), or Sexually Transmitted Disease (STD) status in a sample of 400 injection drug users (IDUs) residing on the Island of Puerto Rico (N=139) and in western Massachusetts (N=261). Logistic regression models revealed that IDUs residing in western Massachusetts were 66% less likely to be HIV positive compared to IDUs residing in Puerto Rico (p<.000) while IDUs residing in western Massachusetts were about 67% less likely to have a positive STD status than those residing in Puerto Rico (p<.000). Place of residence was not significantly associated with HCV status. Results indicate the need to develop prevention programs tailored to the unique socio-cultural context of Puerto Rican IDUs residing on the Island of Puerto Rico whose circumstances differ from those in the mainland US. To reduce drug use, HIV/AIDS, HCV, and STDs among Puerto Ricans in both locales, the Capacity Enhancement Model is proposed in order to develop more effective prevention programs. 相似文献
210.
This paper describes research regarding factors predicting career optimism for a group of postsecondary students with disabilities (N = 208) who were enrolled in seven colleges and universities in four states. Career optimism was defined as a student's self-confidence regarding his or her ability to choose, maintain, and advance in an appropriate career. The proposed model incorporated variables related to employment discrimination and disincentives such as perceived impact of disability on one's education and quality of life, racial/ethnic status, gender, and presence of disability benefits. Results indicated that two aspects of "disadvantagement," specifically severity of perceived impact of disability and racial/ethnic status, were significant predictors of career optimism. Implications of the findings were discussed in terms of informational interventions, curricula, development of self-advocacy and self-determination, and research topics. 相似文献