首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   12073篇
  免费   208篇
  国内免费   1篇
管理学   1506篇
民族学   54篇
人才学   3篇
人口学   1091篇
丛书文集   57篇
理论方法论   1027篇
综合类   104篇
社会学   5661篇
统计学   2779篇
  2023年   73篇
  2022年   68篇
  2021年   72篇
  2020年   181篇
  2019年   223篇
  2018年   326篇
  2017年   440篇
  2016年   279篇
  2015年   239篇
  2014年   289篇
  2013年   2221篇
  2012年   419篇
  2011年   318篇
  2010年   294篇
  2009年   212篇
  2008年   254篇
  2007年   256篇
  2006年   262篇
  2005年   246篇
  2004年   194篇
  2003年   207篇
  2002年   217篇
  2001年   322篇
  2000年   288篇
  1999年   269篇
  1998年   204篇
  1997年   169篇
  1996年   220篇
  1995年   189篇
  1994年   200篇
  1993年   169篇
  1992年   202篇
  1991年   214篇
  1990年   198篇
  1989年   171篇
  1988年   193篇
  1987年   179篇
  1986年   141篇
  1985年   176篇
  1984年   180篇
  1983年   157篇
  1982年   122篇
  1981年   97篇
  1980年   97篇
  1979年   121篇
  1978年   93篇
  1977年   81篇
  1975年   63篇
  1974年   68篇
  1973年   60篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
Physicians practicing in large, multispecialty medical groups share an organizational culture that differs from that of physicians in small or independent practices. Since 1980, there has been a sharp increase in the size of multispecialty group practice organizations, in part because of increased efficiencies of large group practices. The greater number of physicians and support personnel in a large group practice also requires a relatively more sophisticated management structure. The efficiencies, conveniences, and management structure of a large group practice provide an optimal environment to practice medicine. However, a search of the literature found no data linking a large group practice environment to practice outcomes. The purpose of the study reported in this article was to determine if physicians in large practices have fewer quality and utilization problems than physicians in small or independent practices.  相似文献   
72.
Desirable system performance in the face of threats has been characterized by various management concepts. Through semistructured interviews with editors of journals in the fields of emergency response and systems management, a literature review, and professional judgment, we identified nine related and often interchangeably used system performance concepts: adaptability, agility, reliability, resilience, resistance, robustness, safety, security, and sustainability. A better understanding of these concepts will allow system planners to pursue management strategies best suited to their unique system dynamics and specific objectives of good performance. We analyze expert responses and review the linguistic definitions and mathematical framing of these concepts to understand their applications. We find a lack of consensus on their usage between interview subjects, but by using the mathematical framing to enrich the linguistic definitions, we formulate comparative visualizations and propose distinct definitions for the nine concepts. We present a conceptual framing to relate the concepts for management purposes.  相似文献   
73.
Public Organization Review - Studies on the influence of COVID-19 on municipalities are scarce, although it was precisely municipalities that stood in the first line of combat. It is important to...  相似文献   
74.
Influenced by Amabile's views on the intrinsic nature of creative motivation (T. M. Amabile (1988). A model of creativity and innovation in organizations’. In B. M. Staw and L. L. Cummings (eds), Research in Organizational Behavior, Vol. 10, pp. 123–167. Greenwich, CT: JAI Press), researchers have focused primarily on supportive leadership, with authoritarian leadership known to negatively influence employee creativity. Arguing from social information processing theory, the authors show that low levels of authoritarian leadership act as a stressor encouraging creativity, while high levels discourage creativity. Authoritarian leadership is one component of a larger constellation of leader behaviours known as paternalistic leadership. Under paternalistic leadership, authoritarian leadership is combined with benevolence and morality and these interact with authoritarianism. The authors argue that the presence of benevolence and moral leadership causes subordinates to view the leader's authoritarian actions as serving a positive purpose, and show that both benevolence and moral leadership act to offset the negative effects of authoritarian leadership on creativity.  相似文献   
75.
76.
Sea levels are rising in many areas around the world, posing risks to coastal communities and infrastructures. Strategies for managing these flood risks present decision challenges that require a combination of geophysical, economic, and infrastructure models. Previous studies have broken important new ground on the considerable tensions between the costs of upgrading infrastructure and the damages that could result from extreme flood events. However, many risk-based adaptation strategies remain silent on certain potentially important uncertainties, as well as the tradeoffs between competing objectives. Here, we implement and improve on a classic decision-analytical model (Van Dantzig 1956) to: (i) capture tradeoffs across conflicting stakeholder objectives, (ii) demonstrate the consequences of structural uncertainties in the sea-level rise and storm surge models, and (iii) identify the parametric uncertainties that most strongly influence each objective using global sensitivity analysis. We find that the flood adaptation model produces potentially myopic solutions when formulated using traditional mean-centric decision theory. Moving from a single-objective problem formulation to one with multiobjective tradeoffs dramatically expands the decision space, and highlights the need for compromise solutions to address stakeholder preferences. We find deep structural uncertainties that have large effects on the model outcome, with the storm surge parameters accounting for the greatest impacts. Global sensitivity analysis effectively identifies important parameter interactions that local methods overlook, and that could have critical implications for flood adaptation strategies.  相似文献   
77.
Decision making in food safety is a complex process that involves several criteria of different nature like the expected reduction in the number of illnesses, the potential economic or health-related cost, or even the environmental impact of a given policy or intervention. Several multicriteria decision analysis (MCDA) algorithms are currently used, mostly individually, in food safety to rank different options in a multifactorial environment. However, the selection of the MCDA algorithm is a decision problem on its own because different methods calculate different rankings. The aim of this study was to compare the impact of different uncertainty sources on the rankings of MCDA problems in the context of food safety. For that purpose, a previously published data set on emerging zoonoses in the Netherlands was used to compare different MCDA algorithms: MMOORA, TOPSIS, VIKOR, WASPAS, and ELECTRE III. The rankings were calculated with and without considering uncertainty (using fuzzy sets), to assess the importance of this factor. The rankings obtained differed between algorithms, emphasizing that the selection of the MCDA method had a relevant impact in the rankings. Furthermore, considering uncertainty in the ranking had a high influence on the results. Both factors were more relevant than the weights associated with each criterion in this case study. A hierarchical clustering method was suggested to aggregate results obtained by the different algorithms. This complementary step seems to be a promising way to decrease extreme difference among algorithms and could provide a strong added value in the decision-making process.  相似文献   
78.
People differ in their comfort with tampering with the natural world. Although some see altering nature as a sign of human progress, others see it as dangerous or hubristic. Across four studies, we investigate discomfort with tampering with the natural world. To do so, we develop the Aversion to Tampering with Nature (ATN) Scale, a short scale that is the first to directly measure this discomfort. We identify six activities that people believe tamper with nature (geoengineering, genetically modified organisms, pesticides, cloning, gene therapy, and nanoparticles) and show that ATN scores are associated with opposition to these activities. Furthermore, the ATN Scale predicts actual behavior: donations to an anti-tampering cause. We demonstrate that ATN is related to previously identified constructs including trust in technology, naturalness bias, purity values, disgust sensitivity, aversion to playing God, and environmental beliefs and values. By illuminating who is concerned about tampering with nature and what predicts these beliefs, the ATN Scale provides opportunities to better understand public opposition to technological innovations, consumer preferences for “natural” products, and strategies for science communication.  相似文献   
79.
S Webb 《Omega》1973,1(6):757-770
The paper reports a recent International Wool Secretariat (I.W.S.) study to measure the overall effect on sales of fibre advertising, based on annual data for eight major wool-consuming countries, collected from 1960 to 1970. An economic model of the fibre market is set up, and multiple linear regression is used to demonstrate a significant positive relationship between fibre sales and advertising. The effect of wool advertising is quantified, using the estimated regression coefficients, and its cost is compared with the estimated benefits to the wool industry in terms of increased revenue. Possible drawbacks of the approach described are considered, and aspects of the work requiring further study are also mentioned.  相似文献   
80.
S Eilon  Bela Gold  Judith Soesan 《Omega》1975,3(3):329-343
This paper describes a case study in the application of a productivity analysis model in a plant producing industrial gases. Although the process is a relatively simple one, several inputs (labour, electricity, capital and some materials) and several outputs (liquid and gaseous oxygen, gaseous nitrogen, argon and a hydrogen-nitrogen mixture) are involved. The case study demonstrates how measures of total input and total output can be applied and analyses the performance of the plant over a 15-month period in terms of a variety of managerial control ratios.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号