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31.
Temporary Migrants in Shanghai Households, 1984   总被引:3,自引:0,他引:3  
In China, temporary migration is defined as a change in place of residence without a concomitant change in household registration; such mobility therefore encompasses a more heterogeneous set of movements than is usually subsumed under this heading in other nations. Because of China's strict control of permanent migration to large cities, temporary migration has become an important strategy for adjusting to economic changes and to effecting family reunification. The Shanghai Temporary Migration Survey of 1984 focused on one segment of temporary migrants, the 58% living in the households of permanent residents. Multinomial logistic regression suggests the heightened probability that close relatives of the household heads come to Shanghai to visit or to live, and nonrelatives to work. Regression on current and expected duration shows that many intended to stay for a year or more, some for up to 20 years. Their presence in the city places added strains on infrastructure and raises questions about the continued efficacy of China's migration policies.  相似文献   
32.
Migration, fertility, and state policy in Hubei Province, China   总被引:1,自引:0,他引:1  
Despite China s one-child family planning policy, the nation experienced a slight rise in the birth rate in the mid-1980s. Many observers attributed this rise to the heightened fertility of those rural-to-urban migrants who moved without a change in registration (temporary migrants), presumably to avoid the surveillance of family planning programs at origin and destination. Using a sequential logit analysis with life-history data from a 1988 survey of Hubei Province, we test this possibility by comparing nonmigrants, permanent migrants, and temporary migrants. While changing family planning policies have a strong impact on timing of first birth and on the likelihood of higher-order births, migrants generally do not have more children than nonmigrants. In fact, migration tends to lower the propensity to have a child. More specifically, the fertility of temporary migrants does not differ significantly from that of other women.  相似文献   
33.
Sex-related distress is integral to the diagnosis of hypoactive sexual desire disorder (HSDD). This article describes the results of three prospective, non-treatment validation studies (two North American and one European), each testing over 200 participants with HSDD, other types of female sexual dysfunction (FSD), or no FSD in which the 12-item Female Sexual Distress Scale(?) (FSDS(?)), the 13-item FSDS-Revised(?)(FSDS-R(?)), and a single question asked using a daily electronic diary (the eDiary For HSDD Trials(?); eDiary) were used to measure sex-related distress. FSDS results with 30- and seven-day recall were equivalent. The results observed with FSDS-R Item 13 (a single question assessing concern due to low sexual desire) were comparable to the FSDS. Mean eDiary monthly distress scores were closer to the minimum possible score (equivalent to "a little bit" of distress) and were about twice as variable as FSDS or FSDS-R Item 13 scores in participants with HSDD. All three measures confirmed that there is more distress in women with HSDD compared to women with no sexual dysfunction at all time points, demonstrating discriminant validity.  相似文献   
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1. In the course of therapy with individuals or couples, it is sometimes helpful to suggest reading specific material to assist in the therapeutic process. 2. It is important that the therapist be totally familiar with the recommended material and have a specific purpose for the recommendation. 3. The therapeutic interaction, rather than the reading of material, is the focus of the treatment. 4. Such reading may prove helpful because it becomes an educational experience and comprehension of a concept is increased; the material can be "validating" when written by someone unknown to the client who has had a shared experience; and it can remove a struggle for control from the therapeutic relationship by giving information or opinions directly to the client.  相似文献   
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37.
Abstract

Objective: College and university administrators have expressed concern that adoption of tobacco-free policies may reduce applications and enrollment. This study examines adoption and implementation of 100% tobacco-free campus policies by institutions of higher education on applications and enrollment. Participants: North Carolina private colleges and universities and public community colleges. Analysis was conducted in 2011. Methods: Student enrollment and application data were analyzed by campus type to determine (a) if there was a difference in student applications and enrollment before and after policy implementation, and (b) if there was a difference in student applications and enrollment for campuses with versus without a policy. Results: No significant differences were found in student enrollment or applications when comparing years prior to and following policy implementation or when comparing with institutions without 100% tobacco-free campus policies. Conclusions: The authors found no evidence that 100% tobacco-free policy adoption had an impact on student enrollment or applications.  相似文献   
38.
I estimate the frequencies of interracial kin relations, an important indicator of the isolation of racial groups in the United States. I use two techniques to estimate the size and heterogeneity of extended families. First, I develop a simple model that takes account only of kinship network sizes and intermarriage levels by race. This model allows a crude estimation of the frequency of multiracial kinship networks. Second, I produce more precise empirical estimates using a new hot-deck imputation method for synthesizing kinship networks from household-level survey data (the June 1990 Current Population Survey and the 1994 General Social Survey). One in seven whites, one in three blacks, four in five Asians, and more than 19 in 20 American Indians are closely related to someone of a different racial group. Despite an intermarriage rate of about 1%, about 20% of Americans count someone from a different racial group among their kin.  相似文献   
39.
In this article, we show how stochastic diffusion models can be used to forecast demographic cohort processes using the Hernes, Gompertz, and logistic models. Such models have been used deterministically in the past, but both behavioral theory and forecast utility are improved by introducing randomness and uncertainty into the standard differential equations governing population processes. Our approach is to add time-series stochasticity to linearized versions of each process. We derive both Monte Carlo and analytic methods for estimating forecast uncertainty. We apply our methods to several examples of marriage and fertility, extending them to simultaneous forecasting of multiple cohorts and to processes restricted by factors such as declining fecundity.  相似文献   
40.
This paper surveys commercially available MS-DOS and Microsoft Windows based microcomputer software for survival analysis, especially for Cox proportional hazards regression and parametric survival models. Emphasis is given to functionality, documentation, generality, and flexibility of software. A discussion of the need for software integration is given, which leads to the conclusion that survival analysis software not closely tied to a well-designed package will not meet an analyst's general needs. Some standalone programs are good tools for teaching the theory of some survival analysis procedures, but they may not teach the student good data analysis techniques such as critically examining regression assumptions. We contrast typical software with a general, integrated, modeling framework that is available with S-PLUS.  相似文献   
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