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排序方式: 共有409条查询结果,搜索用时 15 毫秒
401.
Abstract

This reflexive ethnographic study examines the work disabled people do to ‘self-manage’ attendant services. The data reveal diverse facets of work reported by ‘self-managers’, their support networks and program administrators. The analysis found that self-managers’ work is often represented as ‘something other than work’, if and when it is represented at all. In this paper, disability studies and feminist perspectives on work inform a discussion of factors that may be seen to render self-managers’ work ‘invisible’, and implications of self-managed models that require contributions of invisible work.  相似文献   
402.
Denmark is an example of a country where the idea of historical ethnic homogeneity stands strong. This article challenges this historical presentism: the scholarly and societal tendency to understand social phenomena within a limited contemporary framework, neglecting possible effects and similarities embedded in and established through human history. This will be done via an historical and ethnographic study of the Copenhagen neighbourhood of Nørrebro. The article underlines the ethnic heterogeneity of Danish history and further shows how combining historical and ethnographic methods in studying a neighbourhood can grant us important insights into the changing incorporation of immigrant groups and the changing meanings of ‘the immigrant’.  相似文献   
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404.
    
The amount of grey literature and ‘softer’ intelligence from social media or websites is vast. Given the long lead-times of producing high-quality peer-reviewed health information, this is causing a demand for new ways to provide prompt input for secondary research. To our knowledge, this is the first review of automated data extraction methods or tools for health-related grey literature and soft data, with a focus on (semi)automating horizon scans, health technology assessments (HTA), evidence maps, or other literature reviews. We searched six databases to cover both health- and computer-science literature. After deduplication, 10% of the search results were screened by two reviewers, the remainder was single-screened up to an estimated 95% sensitivity; screening was stopped early after screening an additional 1000 results with no new includes. All full texts were retrieved, screened, and extracted by a single reviewer and 10% were checked in duplicate. We included 84 papers covering automation for health-related social media, internet fora, news, patents, government agencies and charities, or trial registers. From each paper, we extracted data about important functionalities for users of the tool or method; information about the level of support and reliability; and about practical challenges and research gaps. Poor availability of code, data, and usable tools leads to low transparency regarding performance and duplication of work. Financial implications, scalability, integration into downstream workflows, and meaningful evaluations should be carefully planned before starting to develop a tool, given the vast amounts of data and opportunities those tools offer to expedite research.  相似文献   
405.
    
Literature on the ‘power of words’ has emphasized the importance of a firm's corporate communication as a source of legitimacy and reputation in the eyes of its stakeholders. We argue that it is not just the content or style of a firm's communication about its strategy, but also the alignment between this communication and its subsequent strategic actions that help build legitimacy among stakeholders and creating firm performance. We introduce the organization‐level construct of ‘strategic integrity’ to capture the notion of alignment between a firm's strategy communication and its subsequent strategic actions. We investigate the importance of strategic integrity using the case of the German pharmaceuticals firm Bayer AG in the context of its portfolio restructuring. The results of an event study of 80 acquisitions/divestments indicate that stock markets react positively to strategic integrity.  相似文献   
406.
    
In regimes of high strain rate, the strength of materials often cannot be measured directly in experiments. Instead, the strength is inferred based on an experimental observable, such as a change in shape, that is matched by simulations supported by a known strength model. In hole closure experiments, the rate and degree to which a central hole in a plate of material closes during a dynamic loading event are used to infer material strength parameters. Due to the complexity of the experiment, many computationally expensive, three-dimensional simulations are necessary to train an emulator for calibration or other analyses. These simulations can be run at multiple grid resolutions, where dense grids are slower but more accurate. In an effort to reduce the computational cost, a combination of simulations with different resolutions can be combined to develop an accurate emulator within a limited training time. We explore the novel design and construction of an appropriate functional recursive multi-fidelity emulator of a strength model for tantalum in hole closure experiments that can be applied to arbitrarily large training data. Hence, by formulating a multi-fidelity model to employ low-fidelity simulations, we were able to reduce the error of our emulator by approximately 81% with only an approximately 1.6% increase in computing resource utilization.  相似文献   
407.
408.
This paper considers the question of how much time and effort should be spent in preparing a bid for a single item of known value sold at a first-price sealed-bid auction. A decision-theoretic approach to this bid decision summarizes the decision maker's knowledge of the competitive environment through his or her subjective probability distribution of the highest competing bid. Research activities such as collecting and analyzing bid histories are efforts to obtain additional information that reduces the uncertainty in the highest competing bid. The decision-theoretic concepts of expected value of perfect and imperfect information are used to place an economic value on such research activities. The results presented allow the decision maker to quantify the expected value of imperfect information when the uncertainty is normally distributed. The results show that additional research is most valuable prior to auctions the bidder expects to win.  相似文献   
409.
Four propositions are derived from an a priori model which relates environmental characteristics, organizational differentiation, and perceived environmental uncertainty. The four propositions are: (P1) the greater the magnitude of each of several task environmental dimensions confronting an organization, the greater the degree of organizational differentiation, (P2) the greater the degree of task environment change, the greater the degree of organizational differentiation, (P3) the greater the size of the organization, the greater the organizational differentiation, and (P4) the greater the organizational differentiation, the less the degree of perceived environmental uncertainty seen by top administrators. These propositions were tested on 23 Employment Service District Offices with objective environmental and organizational differentiation measures and with self report indices of perceived environmental uncertainty. Zero-order correlational and regression analyses supported propositions P1, P3, and P4. Based on the empirical findings, a revised model of environment, differentiation and uncertainty was developed. Suggestions for future research and theorizing are offered.  相似文献   
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