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991.
Paul S. F. Yip K. F. Lam Eric H. Y. Lau Pui-Hing Chau Kenneth W. Tsang Anne Chao 《Journal of the Royal Statistical Society. Series A, (Statistics in Society)》2005,168(1):233-243
Summary. In an outbreak of a completely new infectious disease like severe acute respiratory syndrome (SARS), estimation of the fatality rate over the course of the epidemic is of clinical and epidemiological importance. In contrast with the constant case fatality rate, a new measure, termed the 'realtime' fatality rate, is proposed for monitoring the new emerging epidemic at a population level. A competing risk model implemented via a counting process is used to estimate the realtime fatality rate in an epidemic of SARS. It can capture and reflect the time-varying nature of the fatality rate over the course of the outbreak in a timely and accurate manner. More importantly, it can provide information on the efficacy of a certain treatment and management policy for the disease. The method has been applied to the SARS data from the regions affected, namely Hong Kong, Singapore, Toronto, Taiwan and Beijing. The magnitudes and patterns of the estimated fatalities are virtually the same except in Beijing, which has a lower rate. It is speculated that the effect is linked to the different treatment protocols that were used. The standard estimate of the case fatality rate that was used by the World Health Organization has been shown to be unable to provide useful information to monitor the time-varying fatalities that are caused by the epidemic. 相似文献
992.
Behavioral and electrophysiological evidence suggests a gradual, experience‐dependent specialization of cortical face processing systems that takes place largely in the 1st year of life. To further investigate these findings, event‐related potentials (ERPs) were collected from typically developing 9‐month‐old infants presented with pictures of familiar and unfamiliar monkey or human faces in 2 different orientations. Analyses revealed differential processing across changes in monkey and human faces. The N290 was greater for familiar compared to unfamiliar faces, regardless of species or orientation. In contrast, the P400 to unfamiliar faces was greater than to familiar faces, but only for the monkey condition. The P400 to human faces differentiated the orientation of both familiar and unfamiliar faces. These results suggest more specific processing of human compared to monkey faces in 9‐month‐olds. 相似文献
993.
Jay W. Rojewski 《Child and Adolescent Social Work Journal》2005,22(2):133-164
When a child from China is adopted by U.S. parents, the adoptive family must address questions about if, when, how, and how much to acknowledge the birth cultural heritage of their child. This paper addresses these concerns by presenting findings of a study that examined ways families address the myriad issues surrounding cultural heritage. Drawing on work by H. David Kirk, D. M. Brodzinsky (Brodzinsky, Schechter, & Henig, 1992. Being adopted: The lifelong search for self. New York: Anchor Books), and others, a conceptual framework is presented to aid in understanding the dynamics involved in emphasizing (or de-emphasizing) cultural heritage Second, results of a web-based survey that extends the results of earlier work on cultural heritage in families with children adopted from China (Rojewski & Rojewski, 2001. Intercountry adoption from China: Examining cultural-heritage and other post-adoption issues. Westport, CT: Bergin & Garvey) are presented. Specific findings reveal the range of actions taken by adoptive parents on (a) how families cope with family-child differences, (b) how families acknowledge the child’s birth culture and heritage (e.g., acknowledging birth cultural heritage and culturally-related events, having contact with other Chinese children and adults), and (c) the perceived benefits and importance of incorporating Chinese cultural heritage into family life. Results add to an emerging baseline for understanding the range of responses adoptive families have to address issues of Chinese heritage, as well as trends in the reasoning parents use when deciding about cultural heritage-related issues. 相似文献
994.
Our friendships are a way to think about meaning in life. Friendships are like protein, a psychological essential for growth and development. When we see two three-year-olds playing together at the park running, holding hands, laughing, we cannot help but be filled with a sense of joy and warmth We can view making friendships as a developmental process in itself. In this discussion, I will explore the use of toys as a means of making friends. I will also explore the psychological meaning of toys and how they are a developmental precursor to friendship. Two clinical examples will be given in which friendship was the predominant theme in the therapy.The author would like to thank the late Gary Davis for his enthusiasm and friendship. Also: Mary Louise Denardo, Emily Halstead and Marilyn Silin.Lynn Borenstein MSW is on the faculty of the Institute for Clinical Social Work, and the faculty of the Child and Adolescent Psychotherapy Training Program, Institute for Psychoanalysis. 相似文献
995.
Objective. The goal of the study is to empirically assess the extent of partisan and incumbent gerrymandering in the 2000 congressional redistricting. Critics of congressional redistricting have argued that recent partisan gerrymandering severely undermines electoral competitiveness to the point of violating constitutional equal protection standards. Method. We first analyze the legal precedents and arguments central to the contemporary redistricting debate. We then analyze district‐level data measuring the change in a congressional incumbent's presidential party vote share before and after the 2000 redistricting. We conduct regression analyses that test for partisan and incumbent gerrymandering effects with an eye toward noting implications for the Voting Rights Act, particularly majority‐minority districting. Results. We find that recent redistricting significantly contributed to a further decline in electoral competitiveness; however, most of this decline in competitiveness came through incumbency protection, not partisan gerrymandering. Majority‐minority districts lost about 5 percent incumbent party vote share, though only 3 percent in southern states. Conclusion. Given these results, we conclude that the logic of partisan gerrymandering is at variance with the mandate of racial redistricting. One effect of establishing a strict judicial standard limiting statewide partisan biases would be to restrict states' capacity to draw majority‐minority districts. 相似文献
996.
Jean M. Twenge W. Keith Campbell Craig A. Foster 《Journal of marriage and the family》2003,65(3):574-583
This meta‐analysis finds that parents report lower marital satisfaction compared with nonparents (d=?.19, r=?.10). There is also a significant negative correlation between marital satisfaction and number of children (d=?.13, r=?.06). The difference in marital satisfaction is most pronounced among mothers of infants (38% of mothers of infants have high marital satisfaction, compared with 62% of childless women). For men, the effect remains similar across ages of children. The effect of parenthood on marital satisfaction is more negative among high socioeconomic groups, younger birth cohorts, and in more recent years. The data suggest that marital satisfaction decreases after the birth of a child due to role conflicts and restriction of freedom. 相似文献
997.
Drawing on interviews with more than 80 scientists on two university campuses, we create a typology that offers insights into how transformations in the nature and locus of life science innovation influence academic careers and work practices. Our analyses suggest that a strong outcome of increased academic concern with research commercialization is the appearance of new fault lines among faculty, between faculty and students, and even between scientists' interests and those of their institutions. We argue that life science commercialization is driven by a mix of new funding opportunities, changing institutional mandates for universities, and novel research technologies that bring basic research and product development into much closer contact. The rise of patenting and commercially motivated technology transfer on U.S. campuses is altering faculty work practices and relationships, while transforming the criteria by which success is determined and rewards are allocated. Through close analysis of interviews with four researchers who typify a range of academic responses to commercialism, we demonstrate emerging patterns of conflict and agreement in faculty responses to commercial opportunities in the life sciences. 相似文献
998.
Jo An M. Zimmermann Bonnie W. Stevens Brenda J. Thames Christopher M. Sieverdes Gwynn M. Powell 《Nonprofit management & leadership》2003,14(1):79-91
Rapid growth in the number of nonprofits has created a shortage of trained staff and experienced volunteer leadership for nonprofit organizations. The Nonprofit Education Initiative (NEI) in South Carolina developed the DIRECTIONS nonprofit resource assessment model to provide tools to help nonprofits better meet the challenges facing our communities—tools that will help nonprofits develop effective plans, integrate resources, diversify revenue, communicate effective messages, and motivate constituents. These tools are also inexpensive and available close to home. The research and development process was a cooperative effort between the Department of Parks, Recreation, and Tourism Management and Clemson University Cooperative Extension Service, with funding from the W. K. Kellogg Foundation. Cooperative Extension is a component of the land grant university system, the largest educational delivery system in the world. Cooperative Extension's role is to plan, execute, deliver, and evaluate learning programs consistent with locally identified needs. It helps people acquire the understanding, capabilities, attitudes, and skills essential to solving farm, home, and community problems. This article gives a background of the challenges facing nonprofit organizations in South Carolina, the steps taken to develop this new assessment model, and results of research conducted throughout the development process. 相似文献
999.
In this study, seventy-four adolescents in either a school, community or hospital based drug intervention program received and eight to nine week structured fitness activity class as an integrated element of their respective prevention or treatment program. Prepost assessments indicated significant gains in the field fitness tests of one mile run, 1 minute situp, 1 minute pushup, percent fat and flexibility for the total sample. Based upon prepost change on the one mile run time (less than 1:00) subjects were categorized as improvers (n = 38) and non-improvers (n = 36). Improvers demonstrated a significant increase in the self concept risk factor (Piers Harris Self Concept Scale) and a significant decrease in anxiety and depression risk factors (General Well-Being Scale) compared to the non-improvers. At posttest, the improvers self reported substance use patterns were significantly lower compared to the non-improvers for percentage of the sample who were multiple drug users and alcohol uses per week and were significantly higher for the percentage of the sample demonstrating total abstinence. These findings are suggestive of the usefulness of physical training as a supplemental intervention for adolescent substance abusers. 相似文献
1000.
John W. Budd 《Journal of Labor Research》2004,25(4):597-622
Conclusions In the twenty years since the publication of What Do Unions Do?, employee benefits and contingent forms of non-wage compensation have increased in importance and scope in human resources
and industrial relations practice and policy. Nevertheless, Freeman and Medoff’s (1984) seminal work, and the associated research
in Freeman (1981, 1985), has stood the test of time. The theoretical and empirical agenda for research on unions and non-wage
forms of compensation established in those works continues to be the leading framework for conceptualizing and analyzing this
important issue. 相似文献