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71.
Communication of ambiguous risk information   总被引:2,自引:0,他引:2  
This paper reports on the responses of 646 individuals to environmental risk information involving different forms of risk ambiguity. Recipients of more than one set of risk information do not simply average the risk levels provided. Rather, a variety of aspects of the nature of the risks that are communicated influence their probabilistic beliefs. Individuals' perceptions of the risk levels to which they are exposed are likely to be greater: (i) for more ambiguous risks, (ii) for risks for which the unfavorable risk evidence is presented last even when there is no temporal order, (iii) for risks for which the most unfavorable risk studies have been performed most recently, and (iv) for risks where there is asymmetry in the risk ambiguity that imposes substantial potential downside risks. Although these effects are modest for the median individual, the potential for extreme responses that reflect only the most adverse or the most favorable piece of information provided is quite prevalent. These findings are of interest more generally in that they indicate how individuals form their risk perceptions in the presence of risk ambiguity.The authors would like to thank the U.S. Environmental Protection Agency for support of this work under Cooperative Agreements Number CR-815445-01-2 and Number CR-814388-02-1. Dr. Alan Carlin and Dr. Ann Fisher provided valuable guidance in the design of the project, and Dr. Doyle Graham and Dr. Douglas Anthony offered generous assistance in communicating the medical consequences of nerve disease to subjects. Jon LaScala assisted superbly in the administration and analysis of the survey, and Patricia Born provided additional computer programming assistance.  相似文献   
72.
The analysis of qualitative data seems to be inevitably bound to tedious and time-consuming mechanical work, especially if we proceed to more complex analytical procedures like testing hypotheses. In this article we describe the general tasks of qualitative analysis, i.e., reducing data, structuring findings, and drawing conclusions. Then we outline, referring to the software package AQUAD 3.0, how software facilitates the work of qualitative researchers. By describing a practical application of this software, basic features of computer assistance to hypotheses testing are explained.  相似文献   
73.
A prognostic index (PI) is usually derived from a regression model as a weighted mean of the covariates, with weights (partial scores) proportional to the parameter estimates. When a PI is applied to patients other than those considered for its development, the issue of assessing its validity on the new case series is crucial. For this purpose, Van Houwelingen (2000) proposed a method of validation by calibration, which limits overfitting by embedding the original model into a new one, so that only a few parameters will have to be estimated. Here we address the problem of PI validation and revision with the above approach when the PI has classification purposes and it represents the linear predictor of a Weibull model, derived from an accelerated failure time parameterization instead of a proportional hazards one, as originally described by Van Houwelingen. We show that the Van Houwelingen method can be applied in a straightforward manner, provided that the parameterization originally used in the PI model is appropriately taken into account. We also show that model validation and revision can be carried out by modifying the cut-off values used for prognostic grouping without affecting the partial scores of the original PI. This procedure can be applied to simplify the clinician's use of an established PI for classification purposes.  相似文献   
74.
This article considers how a social movement group in the Gay, Lesbian, Bisexual, and Transgender (GLBT) movement engages in discursive contention with the Religious Right over the meaning of traditional family values. By utilizing an understanding of framing as interpretive practice, we return to a more active conceptualization of framing and illustrate how the meaning making of PFLAG (Parents, Families, and Friends of Lesbians and Gays), though bound by the dominant discourse of traditional family values, appropriates this discourse by doing "real family values." We close by considering how PFLAG's interpretive practice subverts and reproduces hegemonic meaning and by noting how our understandings of movement framing are extended by analyses of interpretive practice.  相似文献   
75.
The purpose of this article was to review the current literature on subjective quality of life (SQOL) in individuals who are homeless, with a focus on differences in SQOL (a) between homeless individuals and the general population, (b) based on housing situation, and (c) associated with demographic characteristics (such as age and gender), physical and mental health, and external variables such as service program type. A literature search was conducted of the online databases PubMed and PsycInfo for relevant studies published from January 1981 to August 2011. Although this review showed that individuals who are homeless tended to have lower levels of SQOL compared to the general population or housed individuals, it was also evident that our current understanding of the relationships between SQOL and various demographic, health, and other variables is based on very limited information. More information about the relationships between various characteristics and experiences of individuals who are homeless and SQOL is clearly needed to aid researchers, service providers, and policy-makers in addressing the needs of this population and examining the effectiveness of interventions to end homelessness and improve health among homeless individuals.  相似文献   
76.
The possible effects of ageist language and ageism on the structure and function of intimate and non-intimate relationships have received significant attention from social scientists. Recent research grounded in communication accommodation theory ( Giles, Mulac, Bradac, & Johnson, 1987 ), the communication predicament model of ageing ( Ryan, Giles, Bartolucci, & Henwood, 1986 ), the communication enhancement model of ageing ( Ryan, Meredith, MacLean, & Orange, 1995 ), and ageing and stereotype research by Hummert (1994) and colleagues ( Hummert & Mazloff, 2001 ; Hummert, Shaner, & Garstka, 1995 ) point toward the numerous consequences of both negative and positive attitudes toward ageing. Focusing specifically on health care settings, this article reviews recent theoretical positions and empirical findings that link ageist language and ageism to these positive and negative social consequences, and offers pragmatic suggestions and directions for future research .  相似文献   
77.
The article gives us an exemplary insight into research in Germany that deals directly or indirectly with aspects of listening. The reader is given a clear picture of the Munich university project GanzOhrSein aimed at promoting listening skills in schools. The educational value of listening is initially derived from research findings and the model course of action to promote listening skills is explained via the cultural potential. The findings of the accompanying research clearly show that the diverse ways of promoting listening ability that have been developed and tested, do broaden the hearing and listening habits of the children and teachers participating in the project, and do facilitate listening conditions in lessons. The article will also demonstrate what researchers and everyday school practice can gain from this project, and how the institutionalisation of the promotion of listening can benefit.  相似文献   
78.
This article discusses the 1846 visit of the leading Anglo-Jewish figure Sir Moses Montefiore to Vil'na in the Russian Empire. Invited by leading figures of the city's Jewish community, Montefiore had a broader agenda at hand – the investigation of Jewish education in the empire. The visit had a profound and enduring effect on the Jews of Vil'na. This was reflected in the varying literary responses, especially among the city's maskilim. It forms the central theme of this article.  相似文献   
79.
Advertisements in African languages are generally confined to radio, and in that medium are factual, dialogic and direct. When used in television advertising, however, South Africa’s indigenous languages, particularly those spoken by the largest number of people in South Africa (Nguni languages), play a less informative role, being employed rather to index a concretised African essence, African identity or urban style, or a particular reified post-apartheid togetherness and cultural mobility. In this essay, we analyse four recent television advertisements, all using a Nguni language, and reflect on how and why the vernacular is used and to what extent African languages are no longer seen by television advertisers as carriers of information but as exploitable symbols of trustworthiness, multiculturalism, belonging and innovation. Key tropes that emerge as motivating the inclusion of African languages in television advertisements are identified and serve to organise and focus the argument.  相似文献   
80.
The lack of comparative gentrification research is regularly addressed by the scientific community. Despite the vast amount of isolated case-studies from different urban contexts, there are only few comparisons of gentrified neighborhoods on a global level. It is hypothesized that to a large extent the lack of international comparisons is based on the limits of quantitative secondary data. Therefore, a qualitative research project was designed to develop an analytical scheme of categories. An actor-analysis was conducted in three neighborhoods in Vienna, Chicago and Mexico City. The semi-structured interviews were analyzed in a qualitative content analysis and then linked to the theoretical gentrification-framework. The result, an analytical scheme of 14 categories, provides a new approach to face the significant lack of international comparisons.  相似文献   
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