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131.
Previous studies at the scale of a city have shown that surface soil nutrients, pH, and soil organic matter (SOM) can vary by land cover, land use, and management. This study was conducted in Baltimore County, Maryland, to quantify the differences in characteristics of soil in a residential neighborhood and adjacent forest patch sampling at a fine scale. The first objective was to compare soil characteristics in a residential neighborhood among ecotope types of forest, lawn, and planting beds that were underlain by the same parent material and thus only differed in plant cover. Another objective was to examine differences in soil properties of lawn soils that differed in age by 10 years. The final objective was to quantify the variation of these residential and forest soils. Composite soil samples from the surface to a depth of 5 cm were taken from planting beds and lawns from 50 residences and an adjacent forest patch. Results showed that the forest soil had 30 % more SOM and was more acidic than lawn soil. Conversely, Mg, P, K, and Ca were 47 to 67 % lower in forest compared to lawn soils even though both soils developed from similar parent materials. For the residential lawns, the older development had significantly higher concentration of soil P. There was also a difference between front and back lawns where front lawns had 26 and 10 % higher concentrations of Ca and Mg, respectively, and a higher pH than the back lawns. Finally, the variation of soil characteristics of all areas sampled, from lowest to highest was pH < SOM < K < Mg < Ca < P. Results of this study suggest that anthropogenic factors appear to overwhelm natural soil forming factors in suburban residential areas in the Baltimore metropolitan area and these differences appear to increase with time.  相似文献   
132.
The ‘welfare modelling business’ has become central to comparative social policy in recent years. However, we argue that one important element in this literature, the usefulness of identifying ‘ideal types’ of welfare production that support theoretical development, has been neglected. While much effort has been devoted to the results of the number and composition of the worlds, insufficient attention has been paid to the analytical basis of welfare regimes. This article attempts an audit of the ‘welfare modelling business’, with a review and consideration of the main concepts used in the literature. Our main conclusion is that definitions, concepts and methods need to be given urgent priority for the investment in the business to produce future returns.  相似文献   
133.
Many commentators point to the rise of markets in public services such as healthcare. However, the conventional ‘similarity’ thesis has been challenged by the ‘difference’ thesis. This article critiques and extends the analysis of a recent contribution by Jane Gingrich to the ‘difference thesis’ with a more detailed case study of the English National Health Service (NHS). It argues that the text tends to ignore earlier models and other associated variables; provides a rather crude monolithic characterization of ‘left’ and ‘right’; and assumes rather than demonstrates strategic choice. It modifies some of her major conclusions: markets in public services matter (correct); markets vary in profound and important ways (correct, but perhaps in other ways); and partisan politics are central to explaining and shaping markets (perhaps over‐stated). While Gingrich's ‘breadth’ account is persuasive at the macro‐level, some questions arise from a more detailed account of the English NHS. First, it is not certain that Gingrich's typology is based on the most important dimensions. Second, her account tends to under‐state the importance of issues such as the nature of contracts, price competition, regulation and policies such as Private Finance Initiative. Third, it is not clear that the Conservative healthcare market can be characterized as an Austerity Market, and the Labour market as a Consumer‐Controlled Market. Fourth, this static characterization under‐states the degree of change between and within governments. Lastly, it is not clear what type of market the coalition government has introduced, but this hybrid type may be marked more by policy learning than ideology.  相似文献   
134.
In this paper we argue that little is known about either the geographical objectives or the spatial outputs of the welfare state. Conclusions of geographical inequality are problematic for three main reasons. First, the geographical aims of the welfare state, "the spatial strategy of equality", are unclear. Second, the geographical distributional paradigm is rarely placed in the wider context of local and national welfare states, and the tension between spatial equity and local autonomy is ignored. Third, the geography of welfare, "the spatial division of welfare" is often based on simplistic and confused evidence. Much of the existing work implicitly takes a centralist perspective, assuming that all geographical inequalities are defects. Issues of local government, local politics and local welfare states are ignored. All detected inequality may not be "bad", and greater spatial equity may not necessarily be "good". The spatial division of welfare should not be examined in an analytical vacuum, isolated from the wider contextual issues of national and local services and the trade-off between local autonomy and territorial justice. If the "default value" is that all detected geographical variations are assumed to be defects, then the arguments for localism are doomed to failure.  相似文献   
135.
Child safety is now a national policy priority in Australia. Extensive enquiries and reviews have escalated legislative and policy responses focused on developing, maintaining and monitoring “child safe” organisations. The recommendations of the Royal Commission into Institutional Responses to Child Sexual Abuse point to the importance of cultural conditions within organisations in supporting child safety and the need for responsive change in some organisations. Drawing on a recent policy analysis, undertaken as part of a larger Australian Research Council Discovery Project, this article examines how children and safety are constructed, within and across relevant state and federal government policies in Australia, and the implications of this. Distinctions are drawn between conceptualisations of children within the broader education policy context and two specific policy contexts in which children are considered particularly vulnerable to abuse – out‐of‐home care and disability. The findings indicate that policy discourses of “child safe” potentially foster different emphases and approaches in organisations. These have implications for the way children are positioned in relation to their safety, how their rights are recognised and implemented, and what is required to foster cultural conditions within organisations to best support children’s safety and wellbeing.  相似文献   
136.
In the 30 or so years since the publication of Gosta Esping-Andersenapos;s Three Worlds of Welfare Capitalism a number of rival welfare state typologies have emerged. This article has two broad aims. First, we review the reviews of welfare state typologies, pointing to issues of often unclear case selection and a wide range of concepts, variables, and methods, resulting in a variety of worlds of welfare and their constituent nations. We show that there is a great variety in the welfare modelling business at two different levels. Reviews vary significantly in terms of the number and composition of included studies, which has made it difficult to sum up the “state of the art.” Individual studies included in the reviews also vary significantly in terms of issues such as aims, concepts, variables, and methods. Second, we produce a new review, which adds value as it is based on a clearer search strategy, and includes more recent material that was not available in earlier reviews. This finds that there is a great variety in terms of process (concepts, variables, methods, and number of countries) and findings (the number and composition of “worlds”). We argue that the country classification seems to show less consensus that previous reviews, with fewer “pure” nations (i.e., agreement between studies). We suggest that in order to provide a clear point of engagement, future reviews need to pay more attention to a clear and explicit search strategy, including issues such as inclusion criteria.  相似文献   
137.
Advocacy campaigns opposing the Stop Online Piracy Act and the Anti-counterfeiting Trade Agreement (ACTA) illustrate that the dynamics of networked activism have symbolic as well as structural aspects, with implications for scholars and activists who have focused on the coordination possibilities of networks. This paper analyses the creation and movement of discourses of ‘network exceptionalism’ between advocates, online culture and news media. Networks operate functionally to disseminate ideas and link together people participating in social action (e.g. by embedding aspects of discourse in memes, which then propagate ideas swiftly), but also symbolically, inflecting discourses towards a focus on the exceptional – and essential – qualities of the internet. These discourses embed fears about the fragility and indispensability of the internet, as well as thrilling and threatening elements like Anonymous. They are carried by memes that link the structural dynamics of networked activism to the discourses of illness, threat and utility, and gain different inflections through the European campaigns to oppose ACTA. These discourses not only create spaces for discussing and expanding upon the value of the internet to communication rights, but also leave room for interpretations that may undermine these advocacy projects.  相似文献   
138.
The economic and social contribution young people make to society is increasingly important as the population ages. Yet a substantial number of young people face economic and social challenges that have an impact on their current and future well-being. Independent indicators are often used to describe what we know about how young people are faring, but these fail to show how young people are doing holistically, across their whole life. If we are to better understand and improve young people??s well-being and their lives more generally, it is critical that research establishes the connections and interactions between life domains. This paper uses a well-being framework and secondary analysis of national statistics to begin to understand how young people are faring when we cross economic outcomes with other social indicators. It argues that some Australian young people fare poorly across a large number of other social indicators and thus may be walking a tightrope in regard to their well-being and well-becoming. This paper also aims to generate a dialogue about using a well-being framework for future research with and about young people.  相似文献   
139.
Due to their importance in industry and mathematical complexity, dynamic demand lot-sizing problems are frequently studied. In this article, we consider coordinated lot-size problems, their variants and exact and heuristic solutions approaches. The problem class provides a comprehensive approach for representing single and multiple items, coordinated and uncoordinated setup cost structures, and capacitated and uncapacitated problem characteristics. While efficient solution approaches have eluded researchers, recent advances in problem formulation and algorithms are enabling large-scale problems to be effectively solved. This paper updates a 1988 review of the coordinated lot-sizing problem and complements recent reviews on the single-item lot-sizing problem and the capacitated lot-sizing problem. It provides a state-of-the-art review of the research and future research projections. It is a starting point for anyone conducting research in the deterministic dynamic demand lot-sizing field.  相似文献   
140.
Much of the literature regarding food safety sampling plans implicitly assumes that all lots entering commerce are tested. In practice, however, only a fraction of lots may be tested due to a budget constraint. In such a case, there is a tradeoff between the number of lots tested and the number of samples per lot. To illustrate this tradeoff, a simple model is presented in which the optimal number of samples per lot depends on the prevalence of sample units that do not conform to microbiological specifications and the relative costs of sampling a lot and of drawing and testing a sample unit from a lot. The assumed objective is to maximize the number of nonconforming lots that are rejected subject to a food safety sampling budget constraint. If the ratio of the cost per lot to the cost per sample unit is substantial, the optimal number of samples per lot increases as prevalence decreases. However, if the ratio of the cost per lot to the cost per sample unit is sufficiently small, the optimal number of samples per lot reduces to one (i.e., simple random sampling), regardless of prevalence. In practice, the cost per sample unit may be large relative to the cost per lot due to the expense of laboratory testing and other factors. Designing effective compliance assurance measures depends on economic, legal, and other factors in addition to microbiology and statistics.  相似文献   
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