全文获取类型
收费全文 | 117篇 |
免费 | 0篇 |
专业分类
管理学 | 20篇 |
民族学 | 1篇 |
人口学 | 15篇 |
丛书文集 | 1篇 |
理论方法论 | 9篇 |
综合类 | 1篇 |
社会学 | 54篇 |
统计学 | 16篇 |
出版年
2023年 | 1篇 |
2021年 | 1篇 |
2019年 | 3篇 |
2018年 | 2篇 |
2017年 | 2篇 |
2016年 | 2篇 |
2015年 | 1篇 |
2014年 | 4篇 |
2013年 | 17篇 |
2012年 | 6篇 |
2010年 | 1篇 |
2009年 | 3篇 |
2008年 | 2篇 |
2007年 | 3篇 |
2006年 | 2篇 |
2005年 | 3篇 |
2004年 | 3篇 |
2003年 | 4篇 |
2002年 | 2篇 |
2001年 | 4篇 |
2000年 | 4篇 |
1999年 | 4篇 |
1996年 | 2篇 |
1995年 | 3篇 |
1994年 | 1篇 |
1991年 | 3篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1986年 | 1篇 |
1985年 | 2篇 |
1984年 | 5篇 |
1983年 | 6篇 |
1982年 | 6篇 |
1981年 | 5篇 |
1980年 | 3篇 |
1975年 | 2篇 |
1974年 | 1篇 |
1971年 | 1篇 |
排序方式: 共有117条查询结果,搜索用时 15 毫秒
11.
Previous studies of the growth of metropolitan communities, drawing primarily on ecological theory as represented by Burgess' concentric zone model of the metropolis, have highlighted the effects of distance from the city center on community development. Using data from one major suburban region, we show that a more complete examination of Burgess' ecological life-cycle theory should deal also with the effects of initial development pattern, age of housing stock, minority and low-income presence, and social heterogeneity. In addition we argue that the latter three variables also can be interpreted as measures of the potential for collective action of residents to restrict development, and show that an explicitly political characteristic—incorporation—has a significant impact on one dimension of succession. We conclude that rather than limiting attention to the effects of distance (simplifying Burgess' model to central place theory), studies of growth should address more directly the interaction between ecological processes and the socio-political framework within which they operate. 相似文献
12.
The distributions of coherent systems with components with exchangeable lifetimes can be represented as mixtures of distributions of order statistics (k-out-of-n systems) from possibly dependent samples by using the concept of the signature of Samaniego (1985). This representation, together with Rychlik's (1993) results, can be used to obtain sharp bounds on the distribution (or the reliability) function and on the expected lifetime of the system. Also, this representation can be used to determine the asymptotic behavior of the hazard rate of the system when the order statistics are ordered in the hazard rate order. Moreover, the lifetime distributions of coherent systems (and in particular, of order statistics) can also be represented as generalized mixtures (that is, mixtures with some negative weights) of distributions of series system lifetimes by using the concept of the minimal signature defined by Navarro et al. (2007a). This representation can also be used to determine the final behavior of the hazard rate of the system through the behavior of the hazard rate of the series systems. In particular, it can be used to show that the order statistics are, under some conditions, asymptotically hazard rate ordered. However, in general, this result is not true, that is, the order statistics need not be hazard rate ordered. 相似文献
13.
LetX andY be two random variables with finite expectationsE
X andE
Y, respectively. ThenX is said to be smaller thanY in the dilation order ifE[ϕ(X-E
X)]≤E[ϕ(Y-E
Y)] for any convex functionϕ for which the expectations exist. In this paper we obtain a new characterization of the dilation order. This characterization
enables us to give new interpretations to the dilation order, and using them we identify conditions which imply the dilation
order. A sample of applications of the new characterization is given.
Partially supported by MURST 40% Program on Non-Linear Systems and Applications.
Partially supported by “Gruppo Nazionale per l'Analisi Funzionale e sue Applicazioni”—CNR. 相似文献
14.
This paper presents a procedure designed to aid physicians and patients in the process of making medical decisions, and illustrates its implementation to aid pregnant women, who decided to undergo prenatal diagnostic test choose a physician to administer it. The procedure is based on a medical decision-making model of Karni (J Risk Uncertain 39: 1–16, 2009). This model accommodates the possibility that the decision maker’s risk attitudes may vary with her state of health and incorporates other costs, such as pain and inconvenience, associated with alternative treatments. The medical decision problem was chosen for its relative simplicity and the transparency it affords. 相似文献
15.
ABSTRACTThis qualitative study examined the experiences of social workers who participated in the 2011 Israeli social protests. Data were collected through 1 focus group interview. The sample included 11 social workers employed in 11 social welfare departments throughout the country. Findings highlight the complexities and dilemmas experienced by social workers who protested against the system that employs them. Research findings contribute to the discourse regarding the conflict of loyalty experienced by public social workers engaged in social activism that targets the system that employs them. 相似文献
16.
A large body of literature investigating the link between black percentage in the community and occupational differentiation, has found disparities to be greater in places where blacks are in a higher proportion. The present paper discusses first, theoretical perspectives and methodological techniques employed in past research; second, examines the issue in terms of the relative odds of the races for incumbency in a series of occupational groupings; and third, analyzes the effect of percentage black on race-linked occupational differentiation across 124 major American cities. Using log-linear procedures, blacks, relative to whites, are much more likely to be in unskilled and semiskilled manual occupations, while whites, relative to blacks, are far more likely to be in white-collar and upper-status positions. Moreover, blacks' denial of access to higher-status positions, their channeling to lower-status work, and their ability to overflow into specific intermediate-status occupations are found to be greatly influenced both by percentage black as well as other community characteristics. The findings are discussed in light of sociological theories suggesting that the issue cannot be understood solely by the competition hypothesis. One must also consider the overflow and queuing explanations. 相似文献
17.
Demography - During the last few decades the study of racial differences in occupational and economic attainment has progressed rapidly, both in terms of theory and research. The ecological study... 相似文献
18.
Sex-linked occupational differentiation has been seen as influenced by both the industrial structure of the economy and the sex composition of the labor force. Here, with a sample of 70 SMSAs, it was found (a) that the odds of men relative to women of joining professional and managerial occupations increased between 1960 and 1970, and (b) that this increase was dependent on the growth of tertiary industries and the greater number of women joining the cash economy. The observed effect of industrial shifts on sex-occupational differentiation, however, is argued to be a spurious consequence of the gender-composition of the work force. Specifically, the development of tertiary industries generates greater demand for female labor. Intensive recruitment of women to the labor force in turn increases occupational differentiation because females, in sex-typed labor markets, are likely to be channeled in disproportionate numbers away from upper-status occupations. The findings demonstrate that traditional modernization theory is unable to account for this. However, the results lend support to expectations derived from a labor market sex-segmentation approach. 相似文献
19.
Moshe Anisfeld Gerald Turkewitz Susan A. Rose Faigi R. Rosenberg Faith J. Sheiber Deborah A. Couturier‐Fagan Joseph S. Ger Iris Sommer 《Infancy》2001,2(1):111-122
Newborns (N = 83) were presented with 3 conditions, each for 160 sec: tongue protrusion (TP), mouth opening (MO), and control (CO). In TP and MO, a female model alternated between demonstrating the gesture for 20 sec and presenting a passive, motionless face for 20 sec. In CO, she presented a passive face in both the “demonstration” and “passive” intervals. The participants' eyes were more widely open in the demonstration intervals of TP and MO than in the passive intervals, indicating that they were attending to the gestures. In TP, the participants produced more TP responses than MO responses, but in MO there was no effect, undermining the neonatal imitation hypothesis. 相似文献
20.
Two effects of occupational structure on nuptiality levels are examined: a direct functional effect related to the influence of socioeconomic characteristics on the feasibility and desirability of marriage, and an indirect structural effect related to nuptiality levels via sex selective migration patterns and population sex ratios. Our analysis shows that nuptiality levels in nineteenth century English and Welsh districts were responsive to occupational variation and that both direct and indirect effects were significant. Our results suggest that socioeconomic factors, often overlooked in favor of cultural explanation, must be considered in the analysis of nuptiality. 相似文献