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151.
Abstract

We contribute to the debate about the effects of immigration in the United States by analyzing the impact of recent (1980-2000) immigration on the economic outcomes of African Americans. We use Census 2000 data for a sample of 150 U.S. metropolitan areas to examine these outcomes. Our findings indicate that after controlling for a variety of theoretically relevant control variables, increases in recent immigration decrease labor force non-participation and poverty, and increase median earnings, among blacks. We argue that recent immigration expands blacks' job opportunities in or near the middle of the occupational hierarchy (e.g., protective services; office and administrative support). However, we also find a non-linear effect of immigration on black median earnings which indicates an immigrant population threshold where black earnings begin to decline. Thus, both sides of this debate may be correct: middle-class blacks benefit from increased immigration, but the gains of the black middle class do not always offset the fact that poor and lower-skilled blacks are losing out because of increased competition with immigrants.  相似文献   
152.
153.
This article uses this collection of articles on ageism as a springboard to discuss empirical lacunae in the literature as well as propose a self-categorization model of ageing phenomena. In particular, we argue that research would benefit from a more lifespan communication perspective. This includes the social origins of ageism that can be laid down early in development and perpetuated through collusive processes as individuals themselves age. Further, problems of interactively managing ageism, its intragenerational parameters, and the variable consequences of making death salient, are identified. Finally, we elaborate and illustrate a self-categorization model of ageing processes before critically examining panaceas proposed by others to ameliorate ageism.  相似文献   
154.
The transition into retirement is an important life phase that presents significant challenges in respect to well-being, lifestyle, and consumption choices. This article examines the consumption context of housing after retirement, in particular for the low-resourced cohort of single baby boomer women. Utilizing an extended Theory of Planned Behavior model, we examine the relationship between intention and actual behavior, in this case financial advice seeking, as an important component of the psychological preparedness of single female baby boomer women. Our analysis showed both Australian and UK single baby boomer women display different behaviors in terms of seeking advice and their mental preparedness to adjust to a change in their living arrangements. The findings are discussed in terms of their implications for policy and further research.  相似文献   
155.
This article presents a qualitative risk assessment of the acquisition of meticillin‐resistant Staphylococcus aureus (MRSA) in pet dogs, representing an important first step in the exploration of risk of bidirectional MRSA transfer between dogs and humans. A conceptual model of the seven potential pathways for MRSA acquisition in a dog in any given 24‐hour period was developed and the data available to populate that model were considered qualitatively. Humans were found to represent the most important source of MRSA for dogs in both community and veterinary hospital settings. The environment was found to be secondary to humans in terms of importance and other dogs less still. This study highlights some important methodological limitations of a technique that is heavily relied upon for qualitative risk assessments and applies a novel process, the use of relative risk ranking, to enable the generation of a defensible output using a matrix combination approach. Given the limitations of the prescribed methods as applied to the problem under consideration, further validation, or repudiation, of the findings contained herein is called for using a subsequent quantitative assessment.  相似文献   
156.
Composite likelihood methods have been receiving growing interest in a number of different application areas, where the likelihood function is too cumbersome to be evaluated. In the present paper, some theoretical properties of the maximum composite likelihood estimate (MCLE) are investigated in more detail. Robustness of consistency of the MCLE is studied in a general setting, and clarified and illustrated through some simple examples. We also carry out a simulation study of the performance of the MCLE in a constructed model suggested by Arnold (2010) that is not multivariate normal, but has multivariate normal marginal distributions.  相似文献   
157.
Public housing has been on the chopping block for almost two decades now in an effort to deconcentrate poverty. In 1992 the federal government created the Housing Opportunities for People Everywhere (HOPE) VI program. HOPE VI is driven by the assumption that deconcentrating neighborhood‐level poverty will yield better access to upward mobility opportunities for former public housing residents. To accomplish this, existing public housing is demolished and replaced with mixed‐income developments. Public housing residents are relocated, many with Housing Choice Voucher subsidies to private‐market rental housing. However, by its very definition mixed income means that only a small percentage of former residents get the opportunity to return. Do voucher relocated residents end up in lower poverty neighborhoods with greater upward mobility opportunities? We examine the spatial organization of relocation within the critical discourse on the deconcentration imperative. We highlight Atlanta because it recently became the first city in the nation to eliminate all of its public housing. Findings reveal that voucher relocatees end up in neighborhoods with modestly less poverty than the public housing neighborhoods they left. Questions remain about what poverty deconcentration means vis‐à‐vis policy goals. We provide recommendations for future research.  相似文献   
158.
Redistricting is the political practice of dividing states into electoral districts of equal population in response to decennial census results to ensure equal representation in the legislative body. Where the boundaries are drawn can dramatically alter the number of districts a given political party can win. As a result, a political party which has control over the legislature, can (and does) manipulate the boundaries to win a larger number of districts, thus affecting the balance of power in the US House of Representatives. This work introduces a novel solution to the problem of fairly redistricting a state that is motivated by the ideas of fair division. Instead of trying to ensure fairness by restricting the shape of the possible maps or by assigning the power to draw the map to nonbiased entities, this solution ensures fairness by balancing competing interests against each other. Essentially, it is a simple interactive protocol that presents two parties with the opportunity to achieve their fair representation in a state (where the notion of fairness is rigorously defined) and as a result a balanced electoral map is created.  相似文献   
159.
Two multiple comparisons procedures for determining which of K arbitrarily censored populations differ from each other are proposed. The procedures are based on multiple comparisons using the generalized Wilcoxon and log-rank statistics. The procedures incorporate a pairwise ranking scheme, rather than the joint ranking scheme proposed by Breslow (1970) and Crowley and Thomas (1975). A conservative testing method suggested by an inequality due to ?idák (1967) is given; a numerical example is presented.  相似文献   
160.
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