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971.
The pinewood nematode (PWN) is one of the worst tree‐killing exotic pests in East‐Asian countries. The first European record of establishment in Portugal in 1999 triggered extensive surveys and contingency plans for eradication in European countries, including immediate removal of large areas of conifer host trees. Using Norway as an example, we applied a simulation model to evaluate the chance of successful eradication of a hypothetical introduction by the current contingency plan in a northern area where wilting symptoms are not expected to occur. Despite a highly variable spread of nematode infestations in space and time, the probability of successful eradication in 20 years was consistently low (mean 0.035, SE 0.02). The low success did not change significantly by varying the biological parameters in sensitivity analyses (SA), probably due to the late detection of infestations by the survey (mean 14.3 years). SA revealed a strong influence of management parameters. However, a high probability of eradication required unrealistic measures: achieving an eradication probability of 0.99 in 20 years required 10,000 survey samples per year and a host tree removal radius of 8,000 m around each detection point.  相似文献   
972.
Abstract

The H1N1 influenza A virus (A/USSR/90/77) appeared first in China, then spread to the United States in January 1978, causing significant outbreaks of influenza among younger age groups. Because college students were particularly affected, epidemiologic investigations were done to define the impact of illness on university populations.

We describe influenza outbreaks involving two college campuses (the Universities of Michigan and Colorado). At both schools, illness attack rates were significantly higher for students than for older faculty and staff members. At the two respective campuses, 25 and 36% of those ill who were surveyed sought medical care. Bed confinement averaged 3.8 days at one school (Michigan). At the other school (Colorado), ill students missed an average of 2.8 days of class. Influenza A (H1N1) virus was isolated from specimens from acutely ill students at both campuses.

These investigations illustrate the practical usefulness of college campuses as sites for monitoring the activity of influenza and other acute respiratory diseases.  相似文献   
973.
974.
This study investigates the association between Ronald Inglehart's materialist/postmaterialist index, a psychological aspect of the material pathway to inequalities in health, and health locus of control and psychological health. The data used is from the 2008 public health survey in Skåne, a cross-sectional postal questionnaire study with 28,198 respondents (response rate 54%), conducted in southern Sweden during the fall of 2008. Psychological health (GHQ12), health locus of control (external vs. internal) and the four-item Inglehart's index were assessed. A Multiple Logistic Regression Model was used to control for age, sex, country of origin, socioeconomic status and interpersonal trust. External locus of control was observed among 32.7% of the respondents. Poor psychological health was found in 18.2% of the women and 13.8% of the men. Materialist values were positively associated with low socioeconomic status, while a reverse association between postmaterialist values and low socioeconomic status was observed. External health locus of control was strongly and positively associated with materialist values among both men and women. Psychological health was not associated with materialist/postmaterialist values. The materialist/postmaterialist index, a psychological aspect of the material pathway to inequalities in health, is associated with health locus of control but not with mental health.  相似文献   
975.
Social exclusion and isolation are worldwide social and health concerns with negative effects becoming exacerbated in deprived communities. There is limited understanding related to the role of community‐based centres in reducing social exclusion and isolation, so the aim of this research was to explore the role one family centre had in improving social inclusion in a deprived community in Glasgow, Scotland. Interpretative Phenomenological Analysis was utilized to analyse interviews from 10 parents to explore their lived experiences of creating and developing social networks through family centre attendance. Findings indicate that attending the family centre positively impacted on social inclusion and social support for all parents interviewed. Relationships created in the centre were proposed as being meaningful, non‐judgemental and produced social capital—rooted in reciprocity and trust. Findings can inform services that aim to reduce social isolation in deprived communities.  相似文献   
976.
ABSTRACT

In recent years, there has been an explosion of “experiential design” in casinos, driven in part by research suggesting that curating gambling sensescapes can lure patrons to spend more time – and money – inside the casino. Building on the promise of existing casino ethnographies, this paper argues that a sensory ethnographic approach to the study of gambling environments can offer valuable insight into the experiential design and mood management of the casino. We use sensory ethnography to explore the ambiance of the Montreal Casino, particularly during the casino’s “Vegas Nights” promotion. How does the casino feel (and how does it touch back)? What rhythms flow through its neon labyrinth? What does “getting a real taste of Vegas,” well … taste like? Moreover, we position this ambiance at the center of the casino’s “push-and-pull” approach to problem gambling – where this government-affiliated sensory extravaganza must toe a tenuous line between attraction and responsibilisation. In addition, we examine how the ambiance of the casino is co-produced by patrons and employees. Ultimately, we argue that the casino floor is unlike a sensory research laboratory – for here, sensations mix and mingle, and it takes a sensory ethnographer to quite literally “make sense” of the casino ambiance and its impact on visitor experience.  相似文献   
977.
In times of change Executives often face unexpected and conflicting challenges that require special effort to be reconciled. On the one hand, Top Management continues to raise performance demands on them. On the other hand, employees expect from their supervisors clear direction and emotional support. To enhance Executives?? effectiveness in change companies often deploy Executive Coaching to provide cadre with methodological support in designing and leading corporate transformation. This is based on the fact that change will be more sustainable if solutions are developed in a participative way by members of the organization themselves. Based on an analysis of leadership challenges in times of change the paper outlines critical competences that help to successfully manage volatility, and presents a proven framework for Executive Change Management Coaching.  相似文献   
978.
979.
Positive confirmation bias in the acquisition of information   总被引:1,自引:0,他引:1  
An experiment is reported which tests for positive confirmation bias in a setting in which individuals choose what information to buy, prior to making a decision. The design – an adaptation of Wason's selection task – reveals the use that subjects make of information after buying it. Strong evidence of positive confirmation bias, in both information acquisition and information use, is found; and this bias is found to be robust to experience. It is suggested that the bias results from a pattern of reasoning which, although producing sub-optimal decisions, is internally coherent and which is self-reinforcing.  相似文献   
980.
Competition and choice have become central means of improving public services in England. The former adviser to the Blair government Julian Le Grand has suggested that increased choice and competition should be the cornerstone of policy that aims to deliver more responsive and fairer results for the public. This article explores Le Grand's claims, deploying the conditions earlier suggested by him to examine the conditions which 'quasi-markets will have to meet if they are to succeed as instruments of social policy'. Claims about the efficacy of choice and competition policies in 2007 are assessed against the earlier conditions of market structure, information, transaction costs, uncertainty, motivation and cream-skimming, to examine the extent to which the reforms Le Grand has most recently proposed meet the conditions he earlier suggested would be necessary for markets to work in the public sector.  相似文献   
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