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121.
Using tests of time reversibility, this paper provides further statistical evidence on the long-standing conjecture in economics concerning the potentially asymmetric behaviour of output over the expansionary and contractionary phases of the business cycle. A particular advantage of this approach is that it provides a discriminating test that is instructive as to whether any asymmetries detected are due to asymmetric shocks to a linear model, or an underlying non-linear model with symmetric shocks, and in the latter case is informative as to the potential form of that nonlinear model. Using a long span of international per capita output growth data, the asymmetry detected is overwhelmingly consistent with the long standing perception that the output business cycle is characterized by steeper recessions and longer more gentle expansions, but the evidence for this form of business cycle asymmetry is weaker in the data adjusted for the influence of outliers associated with wars and other extreme events. Statistically significant time irreversibility is reported for the output growth rates of almost all of the countries considered in the full sample data, and there is evidence that this time irreversibility is of a form implying an underlying nonlinear model with symmetrically distributed innovations for 15 of the 22 countries considered. However, the time irreversibility test results for the outlier-trimmed full sample data reveal significant time irreversibility in output growth for around one half of the countries considered, predominantly in Northern Europe and North America, and of a form implying a nonlinear underlying model in only a further half of those cases. 相似文献
122.
Greg Pogarsky Terence P. Thornberry Alan J. Lizotte 《Journal of marriage and the family》2006,68(2):332-344
This study tested the association between mother’s early age at first birth and various life outcomes for her children in later adolescence and early adulthood. Data were analyzed from the Rochester Youth Development Study, an ongoing panel study of adolescents enrolled in seventh or eighth grade in Rochester Public Schools in 1988 (N =729). Boys born to mothers who began childbearing before age 19 had elevated risks of drug use, gang membership, unemployment, and early parenthood. Girls born to young mothers only had elevated risks of early parenthood. Of the mediators tested, low maternal education had the largest mediating effects. The findings suggest that the risks associated with being born to a young mother are substantial but perhaps disproportionately so for boys. 相似文献
123.
Alan O'Day 《Immigrants & Minorities》2005,23(2):399-424
The discussion in this essay clarifies three neglected aspects of the comparative destinies of the Irish in America and Great Britain. First, it explores an apparent if generally unrecognised discrepancy between theories of nationalism and those of ethnicity, attempting to close a loophole in the literature. Secondly, it assesses what being Irish meant to the networks bridging the diasporic experience in the old country and adopted lands. Thirdly, it looks at tours overseas, mainly to the United States, by nationalist figures from the vantage point of the formation of an imagined community or network. It is suggested that the disjunction and a degree of misunderstanding about the networking process arises because the literature presumes an already existing or nearly formed Irish Catholic identity among the immigrants on arrival in new lands. Charles Stewart Parnell's trip in early 1880 also allows elucidation of theoretical paradigms. This linkage of theory and a specific form of ethnic networking yields a fresh dimension to the debate about immigration. Finally, in conclusion the analysis offers a new angle on the curious phenomenon of a resurgence or expansion of Irish 'ethnicity' or purported 'new Irishness' in the United States and elsewhere from around 1960. 相似文献
124.
Alan Sica 《The Sociological quarterly》1983,24(4):605-630
Sociology at the University of Kansas began in 1889, making it one of the oldest departments in the country. This paper sketches its first 94 years, with special attention given to courses offered, faculty development, and the expansion of its graduate program. Suggestions for further research are made regarding sociology not only at this university, but others as well. 相似文献
125.
Fred Chuah Lillian Datario Chuah Lee Reid-Smith Alan Rice Kelvin Rowley 《The Australian journal of social issues》1987,22(4):573-583
This paper challenges the assumption that Australian-Filipina marriages are prone to high rates of marital breakdown; and the belief that the incidence of Australian-Filipina marriages is sufficiently large to warrant the introduction of restrictive immigration policies for Filipinas. First we set the problem of Filipina bride migration in perspective by viewing it in the wider context of Australian immigration patterns — something that has been largely neglected in the discussion so far. Then we review the evidence on marital breakdown and show that Filipina-Australian marriages have been more successful than is commonly assumed. Finally, we consider the standard explanation of the breakdown of Filipina-Australian marriages in terms of ‘cultural differences’. Our conclusion is that much of the discussion has been based on implicit racial and sexual prejudices, rather than factual evidence. 相似文献
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127.
The effect of information on health risk valuations 总被引:1,自引:1,他引:0
This article examines the effect of familiarity with chronic lung disease on people's willingness to pay to reduce their risk of contracting chronic bronchitis, and on their willingness to increase their risk of auto death to reduce chronic bronchitis risk. We find that persons who have a relative with chronic lung disease are willing to give up more income to reduce their risk of chronic bronchitis than persons with no first-hand knowledge of the disease; however, their willingness to increase their risk of auto death to reduce their risk of chronic bronchitis is no different, on average, than persons with no first-hand knowledge of lung disease. This suggests that responses to risk-risk tradeoffs may be more stable than responses to risk-income choices.This research was sponsored by Resources for the Future and by the U.S. Environmental Protection Agency, Office of Policy Planning and Evaluation, Alan Carlin and Joel Scheraga, project officers. We thank Robert Mitchell for his help in conducting focus groups, and Caroline Harnett and Sari Radin for research assistance. Stan Presser, Sue Dowden, and Tim Triplett of the University of Maryland's Survey Research Center administered the survey. We especially thank Stan Presser for his suggestion that we sample relatives of people with chronic lung disease. We also thank Kip Viscusi, Wes Magat, and Joel Huber for making available their computer programs and data, and Ajay Kalra for programming help. Paul Portney and John Mullahy provided useful comments on an earlier draff of the article, as did two referees. 相似文献
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130.
This paper extends understanding of the role of the advocate in the implementation of Operations Research/Management Science models in governmental agencies. The first part of this paper presents and analyzes the data resulting from interviews with 39 criminal justice agencies regarding the model implementation process. The interview data indicated that the advocate performed important problem-solving and mediation functions needed to introduce the technology. The second part of this paper provides a case study describing an advocate's successful introduction of a Patrol Car Allocation Model (PCAM) in the Los Angeles County Sheriff's Department. To assess the overall effectiveness of their implementation strategy, the project team conducted a questionnaire attitudinal survey of lieutenants, sergeants and officers in two of the pilot stations prior to PCAM implementation and after staffing changes. Overall, the attitude of the respondents was more favorable at the time of the second survey. The analysis of the interviews and the PCAM case study suggests a simple normative model for enhancing the chances of successful implementation of Operations Research/Management Science models. 相似文献