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61.
The nitrogen dioxide is a primary pollutant, regarded for the estimation of the air quality index, whose excessive presence may cause significant environmental and health problems. In the current work, we suggest characterizing the evolution of \(\hbox {NO}_{2}\) levels, by using geostatistical approaches that deal with both the space and time coordinates. To develop our proposal, a first exploratory analysis was carried out on daily values of the target variable, daily measured in Portugal from 2004 to 2012, which led to identify three influential covariates (type of site, environment and month of measurement). In a second step, appropriate geostatistical tools were applied to model the trend and the space–time variability, thus enabling us to use the kriging techniques for prediction, without requiring data from a dense monitoring network. This methodology has valuable applications, as it can provide accurate assessment of the nitrogen dioxide concentrations at sites where either data have been lost or there is no monitoring station nearby.  相似文献   
62.
We offer a new approach for modeling past trends in the quantiles of the life table survivorship function. Trends in the quantiles are estimated, and the extent to which the observed patterns fit the unit root hypothesis or, alternatively, an innovative outlier model, are conducted. Then a factor model is applied to the detrended data, and it is used to construct quantile cycles. We enrich the ongoing discussion about human longevity extension by calculating specific improvements in the distribution of the survivorship function, across its full range, and not only at the central-age ranges. To illustrate our proposal, we use data for the UK from 1922 to 2013. We find that there is no sign in the data of any reduction in the pace of longevity extension during the last decades.  相似文献   
63.
ABSTRACT

Empowerment is a concept widely used in several policy documents and is presented, in social work and social care professional universes, as an operative process to reduce vulnerability and to increase the power, or capabilities, of individuals and groups to make choices and to transform these into actions and results. However, to move beyond rhetoric and paternalistic practices, we need to understand what empowerment really means and implies in different contexts, and especially, how to evaluate what has changed (outcomes) or is changing (processes), both on an individual and a collective level.  相似文献   
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Kallio J, Blomberg H, Kroll C. Social workers' attitudes towards the unemployed in the Nordic countries In recent decades, municipal social workers have become the implementers of new types of social policy measures aimed at activating the unemployed. These policies put a greater emphasis on the individual's own responsibility for being unemployed. Little is known, however, about how social workers view the unemployed – one factor that might influence how policies are in fact implemented. Therefore, our purpose was to analyse Nordic social workers' attitudes towards the unemployed and their determinants: Do social workers' attitudes correspond with a more individualistic view on unemployment? We utilised the data from surveys of professional social workers in four Nordic countries. Our analyses showed that individualistic attitudes towards the unemployed appeared to be rather rare among Nordic social workers. However, attitudinal differences were found between and within countries.  相似文献   
66.
The authors used social cognitive career theory (Lent, Brown, & Hackett, 1994 ) as the basis for examining the person and contextual variables of gender, ethnicity, educational and career barriers, and career‐related parent support for incoming 1st‐year African American, Asian, Latino, and White college students. Women, as compared to men, perceived significantly higher levels of career barriers but similar levels of coping efficacy in dealing with these barriers. Women also reported receiving more career‐related emotional support from parents than did men. For all participants, career‐related parent support accounted for a significant portion of the variance for perceptions of educational and career barriers and coping efficacy with educational and career barriers.  相似文献   
67.
Although some major risk studies have been done for Campylobacter jejuni, its dose response is not well characterized. Only a single human study is available, providing dose-response information for only a single isolate. As substantial heterogeneity in infectivity has been acknowledged for other pathogens, it remains unknown how well this single study represents the dose-response relation for this pathogen. As future human challenge studies with Campylobacter are unlikely, we have to find other means of studying its infectivity. Several dose-response studies have been done using chickens as host organisms. These studies may be used to obtain quantitative information on the variation in infectivity among different isolates of this pathogen. A hierarchical Bayesian model is well suited to describe heterogeneity, and we demonstrate how the beta-Poisson model of microbial infection may be adapted to allow for within- and between-isolate variation. Isolates tested in chickens can be categorized into two distinct groups: lab-adapted and fresh isolates, and we show how the hierarchical dose-response model can be used to quantitatively describe their differences. Fresh isolates show higher colonization potential and less within-isolate variation than lab isolates. The results indicate that Campylobacter jejuni is highly infectious in chickens. Different isolates show great variation in infectivity, especially between lab and fresh isolates, indicating that human clinical (volunteer) studies on infectivity must be interpreted cautiously.  相似文献   
68.
Corporations are increasingly forced to widen their agendas to include social and environmental concerns, or corporate social responsibility (CSR). This development has been recorded in the current academic debate, and the views regarding its implications for business, the state, and civil society diverge. However, there is agreement within the CSR and corporate governance literatures that there is a lack of thorough empirical studies of these effects. Based on a case study of the multinational wind energy company Suzlon Energy's CSR projects in rural India, this article contends that CSR projects implemented through cross‐sector partnerships can help to build the capacities of civil society organizations (CSOs). Although the risk of corporate steering of the civil society agenda is reduced when CSR prioritizes community needs over business imperatives, CSOs tend to bear the highest costs in partnerships, through credibility losses and insecurity concerning project terms and funding, reinforcing the importance of critical cooperation and complementary core competencies in cross‐sector partnerships. The results have implications for the strategies of corporations, CSOs, and governments as well as for the planning of national and international development aid.  相似文献   
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Perceptions of Legitimacy in Nordic Regional Development Networks   总被引:1,自引:0,他引:1  
This article examines actors’ views on legitimacy in governance networks in four Nordic countries. The analysis is based on a survey of similar regional development networks in Denmark, Norway, Sweden and Finland. The countries form a continuum, in which the connection between legitimacy and representative democracy is strongest in Denmark and weakest in Finland. Norway and Sweden fall in between the two. Not only the strength, but also the form of the connection, and the weight given to it vary among the countries. Article contributes to the debate on democracy in network governance.  相似文献   
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