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181.
This paper presents a method for constructing confidence intervals for the median of a finite population under unequal probability sampling. The model-assisted approach makes use of the L1-norm to motivate the estimating function which is then used to develop a unified approach to inference which includes not only confidence intervals but hypothesis tests and point estimates. The approach relies on large sample theory to construct the confidence intervals. In cases when second-order inclusion probabilities are not available or easy to compute, the Hartley–Rao variance approximation is employed. Simulations show that the confidence intervals achieve the appropriate confidence level, whether or not the Hartley–Rao variance is employed. 相似文献
182.
This study reconciles the positive and negative sides of CEO grandiose narcissism by examining the role that CEO organizational identification plays in moderating the effect of CEO grandiose narcissism on top management team (TMT) behavioral integration. We first distinguish between grandiose and vulnerable narcissism and we then draw on upper echelons theory and executive personality research to hypothesize and test a model in which CEO grandiose narcissism is positively related to TMT behavioral integration when CEOs are high in organizational identification. The relationship is expected to be negative when CEOs do not identify strongly with their organizations. TMT behavioral integration, in turn, predicts subsequent firm performance. Findings based on multi-source data from a sample of 97 CEOs and their firms supported the hypotheses. These results highlight the complex nature of CEO grandiose narcissism – namely, that the construct has both positive and negative aspects as it relates to top management team dynamics and firm performance and that the relationship is affected by CEOs' identification with their organizations. 相似文献
183.
Women 65 years old and over make up the fastest growing population segment in North America. They are, particularly among the underprivileged, known to be heavy consumers of prescribed and over-the-counter drugs. The objective of this study was to identify the role of medication in underprivileged elderly women's strategies for aging well and dealing with minor health problems. A qualitative study was conducted among 40 women aged 65 to 75. Results show that elderly women seldom mention resorting to medication to "age well" although they report using this strategy to deal with minor health problems. Overall, the elderly women mentioned a wide range of strategies to cope with aging and minor health problems, which suggests that they are well equipped to face the challenges of aging. 相似文献
184.
S. Philip Morgan Suzanne Shanahan Whitney Welsh 《Population and development review》2005,31(1):127-144
Advances in biotechnology have important applications to the core demographic concerns of human reproduction and longevity, raising a number of difficult ethical issues. In the debate over those issues, however, the voices of demographers and other social scientists are nearly silent. In the United States the dominant bioethical arguments currently heard come from a conservative political and ideological position, represented, for example, by the President's Council on Bioethics and in particular by its chairman, Leon Kass. A critical discussion of Kass's writings identifies the philosophical roots of that position and highlights its logic and limits. Kass's specific arguments on cloning can be challenged by applying them to an earlier and revolutionary technology, birth control; his views on death and dying would argue for curtailing investment in life‐extending technology. Conservatism of this kind ignores social science perspectives and forecloses opportunities for social change. 相似文献
185.
The purpose of the present study is to test the relationships among differentiation of self, relationship satisfaction, perceived partner support, and depression in a sample of patients with chronic lung disease (CLD) and their partners. The sample consisted of 52 patients with CLD and their partners. Hierarchical multiple regression was used for data analysis. The results indicate that (a) patients' differentiation of self is significantly lower than partners' differentiation of self, (b) patients' relationship satisfaction is positively correlated with partners' relationship satisfaction, (c) patients' relationship satisfaction predicts perceived partner supportive behavior, (d) perceived partner unsupportive behavior predicts patients' depression, (e) partners' differentiation of self predicts partners' relationship satisfaction, (f) partners' relationship satisfaction predicts partner supportive behavior, and (g) partners' differentiation of self and relationship satisfaction predicts partners' depression. The study serves to highlight the fact that the patient is part of a system, and that taking the system into account is relevant to the well-being of both the patient and the partner, in particular for patients with CLD, a heretofore unstudied population. The results of such studies have significant implications for couple and family therapists. 相似文献
186.
Participation in biodiversity conservation: Motivations and barriers of Australian landholders 总被引:1,自引:0,他引:1
Biodiversity conservation programs that appeal to landholders’ motivations and minimise their barriers to participation may result in both increased uptake rates and improved ecological outcomes. To understand their motivations and barriers to conserve biodiversity, qualitative interviews were conducted with 45 landholders who had participated in one of three different programs in Queensland, Australia. The results revealed that the landholders’ decisions to participate depended on the level of formal biodiversity protection offered by the program, potential changes to their property rights, personal benefits of participation, and the program objectives. Landholders’ motivations related to conservation, production, financial and experimental imperatives. Common barriers to participation were lost productivity, different interpretations of what constituted “conservation”, and limits to future development and land use options. Voluntary and economic policy instruments can be used to stimulate participation and overcome barriers, but must be applied with care to reduce the creation of perverse ecological outcomes, such as slippage and low additionality. 相似文献
187.
Jeff Dunn Suzanne K. Chambers 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2016,27(1):425-464
Although episodic volunteers are a critical resource for many organisations, their motives for volunteering are poorly understood. A systematic review was conducted to describe empirical evidence about motives for episodic volunteering (EV) across sectors (sport, tourism, events, health and social welfare). Identified EV motives were then categorised using core functions from the Volunteer Functions Inventory (VFI) for comparison across studies. Twelve databases (1990–December 2014) were searched. Thirty-three English language studies included results describing EV motives. Studies were predominantly cross-sectional, quantitative, event-based and originating in North America. Measurement of motives was also inconsistent. Common motives were helping others and socialising. Physical challenge and healing motives were specific to sport-based events and charity sport events, respectively. Over 80 % of motives were classified using VFI functions, particularly enhancement, values and social functions. The VFI supplemented by qualitative work may be efficacious to further identify EV motives and retention strategies. 相似文献
188.
189.
Philip N. Kokic Lynelle Moon Jane Gooday Ray L. Chambers 《Australian & New Zealand Journal of Statistics》1995,37(2):129-143
The Australian Bureau of Agricultural & Resource Economics (ABARE) has conducted the annual Australian Agricultural and Grazing Industries Survey, covering the broadacre sector, in a consistent format since 1978/79. In this period the incomes of farmers have fluctuated considerably. Interest has focused on temporal income variation because of its relationship to the inherent riskiness of farming. Part of these income fluctuations can be explained by changing commodity prices and by highly variable climatic conditions. This paper outlines a method of measuring the magnitude of this income variation and how it relates to other variables. Due to rotation within the sample of farms surveyed, data are limited for determining the income variability of any particular farm. This paper, using spatial locations of surveyed farms, shows how kernel smoothing techniques can be adapted to estimate the distribution of a farm's income. This analysis uses data collected from 1978/79 to 1991/92. Summary information from these distributions is cross-tabulated against several other variables. This shows that income variability is strongly related to the production mixture of farming businesses. 相似文献
190.
A nonresident father's involvement can be divided into two components: presence (if a father is involved in his child's life) and level (how much he is involved). Guided by role saliency theory, this study simultaneously examined predictors of these two components. Data were drawn from 1,215 mothers of the Fragile Families and Child Wellbeing Study. Zero-inflated negative binomial regression models revealed that the coparental relationship had different influences on the presence and level of father involvement. Although relationship status, quality, and conflict influenced presence of father's involvement, parents' positive relationship was the major factor that predicted level of involvement. 相似文献