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21.
Seduced by the elegance, sophistication and jargon characteristic of new developments in applied research, practicing evaluators are in danger of becoming distracted from achievement of their evaluative goal: that of providing timely, reliable and useful data to program management to facilitate rational data-based decision-making. To avoid such seduction, the author advocates adaptation of simple, inexpensive and efficient evaluative methods tailored to organizational needs and presentation of findings in language readily understood by constituent groups. Likewise, insistance by evaluators upon maintenance of a strict role boundary — that is, limiting role functioning exclusively to those tasks considered evaluation — may be dysfunctional. Rather than detract from accomplishment of his goals, the author maintains that such participation allows development of skills, insights and staff relationships which enhance the evaluator's effective functioning within the organizational context and contribute to organizational acceptance and use of his evaluative results.  相似文献   
22.
Modeling household fertility decisions with generalized Poisson regression   总被引:1,自引:1,他引:0  
This paper models household fertility decisions by using a generalized Poisson regression model. Since the fertility data used in the paper exhibit under-dispersion, the generalized Poisson regression model has statistical advantages over both standard Poisson and negative binomial regression models, and is suitable for analysis of count data that exhibit either over-dispersion or under-dispersion. The model is estimated by the method of maximum likelihood. Approximate tests for the dispersion and goodness-of-fit measures for comparing alternative models are discussed. Based on observations from the Panel Study of Income Dynamics of 1989 interviewing year, the empirical results support the fertility hypothesis of Becker and Lewis (1973). Received January 7, 1997 /Accepted April 3, 1997  相似文献   
23.
This paper develops a model ofinter vivos gifts and bequests in a setting of moral hazard and adverse selection. Altruistic parents do not perfectly know how much effort their children make to earn their living, nor do they know their true level of ability.Inter vivos gifts take place prior to the realization of the children's earnings whereas at the moment of bequests, parents do observe them. We show that an optimal transfer policy generally uses a mix ofinter vivos gifts — deemed as more efficient — and bequests — deemed as more redistributive.We are thankful to Allessandro Cigno, Jacques Cremer, Claude d Aspremont and anonymous referees for their comments.Responsible editor: Alessandro Cigno  相似文献   
24.
A striking characteristic of recent Western labour market trends is the rise in employment among mothers of very young children. So far, few studies have analysed the impact of public policies on employment rates of young mothers. In this study we address this issue by comparing two similar countries, Norway and Sweden, which have the same set of policies with slight variations, using data sets with similar designs. We analyse rates of re-entry into paid work after first birth for mothers in 1968–88 by means of hazard regression. One important finding is that the right to paid maternity leave with jobsecurity greatly speeds up the return to work.We want to thank Jan Kowalski for programming assistence and the Swedish Research Council for the Social Sciences and the Swedish Council for Research in the Humanities and Social Sciences for financial support for the Swedish study. We are grateful to John F. Ermisch, Siv Gustafsson, to two anonymous referees and to colleagues at the Demography Unit for valuable comments. Responsible editors. Siv S. Gustafsson, John F. Ermisch.  相似文献   
25.
The impact of migration on income for Swedish multi-adult households is examined using panel data pertaining to a sample of stable household constellations during the period 1980–1990. In contrast to previous studies, data on household disposable income is employed in estimating the income function. The empirical results indicate no significant effect on real disposable income from migration. In addition, the hypothesis of no self-selection, or zero correlation between the errors in the decision function and the income function, cannot be rejected. Received: 10 May 1995 / Accepted: 14 August 1996  相似文献   
26.
This paper shows that financial intermediation can influence fertility and labor allocation decisions by raising market wages. The increase in wages induces some households to abandon “traditional” labor intensive methods of production managed at the household level and supply labor to “modern” sector firms. Since it is optimal for households in the modern sector to have fewer children, the labor allocation decision leads to lower national fertility. A panel VAR using financial intermediation, fertility and industrial employment share data in 87 countries is estimated. The empirical results show that the data are consistent with the theoretical predictions. Received: 20 October 1997/Accepted: 31 August 1998  相似文献   
27.
The paper uses a meta-analysis to comparatively evaluate the literature addressing the aggregate relationship between a populations age structure and fertility, as hypothesized by Richard Easterlin. The analysis is based on 334 estimated effects retrieved from 19 studies. The results suggest that several factors undermine the empirical support of the Easterlinian age structure/fertility link. These include the neglect of income, the use of relative cohort size to characterize the age structure, mis-specifications of the relevant age-cohorts, as well as the functional form and estimation technique. The results also suggest that the sample of published estimates possibly suffers from two types of publication bias, an under-representation of insignificant effects for small samples, and bias towards supportive effects in the earlier years followed by a bias towards negative effects as the literature matured.All correspondence to: Brigitte Waldorf. The authors appreciate the insightful comments and suggestions from two anonymous reviewers. The research also benefited from discussions with participants of the International Colloquium on Meta-analysis in Economics, Free University, Amsterdam, The Netherlands, December 2002. Finally, we would like to thank David Brown, Meagan Cahill, Angela Donelson, Calvin Farris, and Melaney Seacat from the University of Arizona for their research assistance. Responsible editor: Junsen Zhang.  相似文献   
28.
《九色鹿》是著名的佛本生故事,其在中土的图文传播有同有异。从传播内容言,二者所关注的人物形象都集中在九色鹿、国王、告密者以及国王夫人身上,但文学的传播内容,总体上较图像传播更丰富些。从传播途径言,图像传播线路较为明确,可归纳为“印度→犍罗陀→中土”,而文学传播似有断层。从传播时间之先后言,图像的叙事传播略早于文学传播,但文学传播持续时间更长,一直持续到宋元以后。无论图、文叙事,都受到了中土固有文化的影响。  相似文献   
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