全文获取类型
收费全文 | 29442篇 |
免费 | 1566篇 |
国内免费 | 291篇 |
专业分类
管理学 | 3111篇 |
劳动科学 | 9篇 |
民族学 | 540篇 |
人才学 | 2篇 |
人口学 | 384篇 |
丛书文集 | 3273篇 |
理论方法论 | 1559篇 |
综合类 | 19655篇 |
社会学 | 1671篇 |
统计学 | 1095篇 |
出版年
2024年 | 23篇 |
2023年 | 251篇 |
2022年 | 286篇 |
2021年 | 302篇 |
2020年 | 545篇 |
2019年 | 463篇 |
2018年 | 457篇 |
2017年 | 572篇 |
2016年 | 547篇 |
2015年 | 671篇 |
2014年 | 1527篇 |
2013年 | 1962篇 |
2012年 | 1866篇 |
2011年 | 2057篇 |
2010年 | 1791篇 |
2009年 | 1725篇 |
2008年 | 1827篇 |
2007年 | 2136篇 |
2006年 | 2196篇 |
2005年 | 2005篇 |
2004年 | 1911篇 |
2003年 | 1803篇 |
2002年 | 1404篇 |
2001年 | 1189篇 |
2000年 | 677篇 |
1999年 | 230篇 |
1998年 | 129篇 |
1997年 | 101篇 |
1996年 | 73篇 |
1995年 | 83篇 |
1994年 | 80篇 |
1993年 | 64篇 |
1992年 | 43篇 |
1991年 | 37篇 |
1990年 | 38篇 |
1989年 | 29篇 |
1988年 | 38篇 |
1987年 | 25篇 |
1986年 | 25篇 |
1985年 | 17篇 |
1984年 | 23篇 |
1983年 | 19篇 |
1982年 | 19篇 |
1981年 | 19篇 |
1980年 | 4篇 |
1979年 | 5篇 |
1977年 | 2篇 |
1976年 | 1篇 |
1975年 | 2篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
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
2.
Development of an Asset Value Map for Disaster Risk Assessment in China by Spatial Disaggregation Using Ancillary Remote Sensing Data 总被引:1,自引:0,他引:1
《Risk analysis》2018,38(1):17-30
The extent of economic losses due to a natural hazard and disaster depends largely on the spatial distribution of asset values in relation to the hazard intensity distribution within the affected area. Given that statistical data on asset value are collected by administrative units in China, generating spatially explicit asset exposure maps remains a key challenge for rapid postdisaster economic loss assessment. The goal of this study is to introduce a top‐down (or downscaling) approach to disaggregate administrative‐unit level asset value to grid‐cell level. To do so, finding the highly correlated “surrogate” indicators is the key. A combination of three data sets—nighttime light grid, LandScan population grid, and road density grid, is used as ancillary asset density distribution information for spatializing the asset value. As a result, a high spatial resolution asset value map of China for 2015 is generated. The spatial data set contains aggregated economic value at risk at 30 arc‐second spatial resolution. Accuracy of the spatial disaggregation reflects redistribution errors introduced by the disaggregation process as well as errors from the original ancillary data sets. The overall accuracy of the results proves to be promising. The example of using the developed disaggregated asset value map in exposure assessment of watersheds demonstrates that the data set offers immense analytical flexibility for overlay analysis according to the hazard extent. This product will help current efforts to analyze spatial characteristics of exposure and to uncover the contributions of both physical and social drivers of natural hazard and disaster across space and time. 相似文献
3.
——中印传统体育文化对比研究范娟娟 《盐城工学院学报(社会科学版)》2020,33(1):100-103
中、印传统体育文化蕴含了东方文明对于处世之道和养身模式的价值追求,作为东方体育文化典型代表的太极拳与瑜伽术,既是修炼身心、运动健身的重要项目,也是人们了解东方体育文化的重要媒介。跨文化比较分析表明,太极拳和瑜伽术在注重身形技法与艺术审美的结合、吐纳导引与意念游动的耦合、修身养性与天人意境的融合等方面具有共性,也有差异,体现出中、印在传统体育文化方面的异同。太极拳和瑜伽术的传承应该做到与时俱进、创新发展,其目标既不是传统竞技搏击术,也不是简单修炼养身术,而是融道德修养与身心修炼为一体的综合性运动项目。 相似文献
4.
This paper experimentally studies individuals’ willingness to pay for the authority to make risky decisions for themselves, and the willingness to take responsibility for others, as primary determinants of leadership willingness. We consider a setup involving a pair of individuals, where one individual is designated to make both parties’ decisions by default. Depending on treatment, either party can express a willingness to pay to change this situation. If one’s willingness to pay to make her own decision herself is positive (negative), we interpret it as a demand for autonomy (a desire to delegate). On the flip side, if one’s willingness to pay to avoid making a decision on behalf of another person is positive (negative), we interpret it as a desire to avoid responsibility (a demand for authority). We find that on average, individuals are willing to pay positive amounts of money to make their decisions themselves, and incur positive but smaller opportunity costs for the right to make decisions for others. Certain individual and contextual characteristics emerge as important predictors. Notably, (1) men are more likely to demand both autonomy and authority at the same time, (2) individuals with other regarding preferences are more likely to pay to avoid taking responsibility for others’ decisions when the probability of loss is high. Exploring differences between individuals’ own decisions and the decisions they make on behalf of others, we find that subjects with other-regarding preferences tend to “cautious-shift” when making decisions on behalf of others. Also, we find that individuals who would like to avoid responsibility also tend to “shift” their decisions when put in a decision-making role. The results have implications for the allocation of decision-making authority in pairs and leadership. 相似文献
5.
ABSTRACT Women fare less well than men across all academic disciplines: they are less likely to be promoted, they earn less, and many more professors are men. There has, however, been little analysis to date of the experience of women in social work education, a discipline that has historically had higher representation of female staff and students. This study set out to explore women in the social work academy through a case-study of social work education in Scotland. A mixed-methods approach was used, including a review of relevant literature; an online survey of women and men academics in social work education; and semi-structured interviews with female social work leaders, past and present. The study found that women in the social work academy faced the same pressures as other women in higher education; some of these pressures were also shared by men. Most significant, however, was the extent to which women in social work academia experienced twin challenges, firstly, as female academics and secondly, as female social work academics in a discipline that struggles for recognition in the academy. We conclude that this makes for a contradictory and, at times, ambiguous experience for women as they navigate the gendered academy. 相似文献
6.
Demetrius A. Abshire Janessa M. Graves Robin M. Dawson 《Journal of American college health : J of ACH》2020,68(5):477-483
AbstractObjective: To examine rural-urban differences in college students’ cardiovascular risk perceptions. Participants: College students in rural (n?=?61) and urban (n?=?57) Kentucky counties were recruited from November 2012 to May 2014. Methods: This was a secondary data analysis of a cross-sectional study examining rural-urban differences in cardiovascular risk factors. Students rated their risk for developing high blood pressure, diabetes, high cholesterol, heart disease, having a stroke, and gaining excess weight. Chi-square and logistic regression were used for data analysis. Results: Rural students had lower odds of perceived high risk for developing high blood pressure compared to urban students (odds ratio (OR): 0.32, 95% CI: 0.11–0.96) after adjusting for race, sex, and body mass index. This association was not observed after adjusting for healthcare access variables. No other significant differences were observed. Conclusions: Efforts to raise perceived risk for developing hypertension among rural college students may be warranted. 相似文献
7.
Megan Chesin Michele Cascardi Michelle Rosselli William Tsang Elizabeth L. Jeglic 《Journal of American college health : J of ACH》2020,68(6):644-649
AbstractObjective: To test associations between viewing 13 Reasons Why, Season 1 and past week suicide ideation severity, behavior risk, stigma, and knowledge in college students. To explore whether personal exposure to suicide and depressive symptom severity moderated these associations. Participants: Eight-hundred and eighteen college students, 64% (n?=?522) of whom watched 13 Reasons Why. Methods: Students completed surveys online. Multivariate negative binomial regressions were used to test associations between watching 13 Reasons Why and suicide-related variables, and interaction terms. Results: Suicide ideation severity and suicide behavior risk were not significantly associated with viewing 13 Reasons Why; however, there was limited statistical power to detect associations. The association between watching 13 Reasons Why and greater suicide knowledge was stronger among those who did not have personal exposure to suicide. Conclusions: 13 Reasons Why may be a platform for psychoeducation on suicide, particularly among those who do not have personal exposure. 相似文献
8.
9.
Ibtisam Marey-Sarwan 《Children & Society》2020,34(2):151-169
This article is based on a participatory, context-informed study that examined perception of ‘risk’ and ‘protection’ among 30 Bedouin children aged four to five. It was conducted in the Bedouin unrecognised villages — Southern Israel and utilised photography, drawings and verbal explanations. The analysis yielded seven themes representing children’s perceptions of risk and protection. It indicated that children facing extreme adversity were aware of numerous risk conditions, including a lack of infrastructure and the fear of losing their homes, thus adversely affecting their well-being. Children’s insights, and suggested modes of protection, as the study findings reveal, are crucial for promoting children’s welfare. 相似文献
10.
《Risk analysis》2018,38(8):1529-1533
In the field of risk analysis, the normative value systems underlying accepted methodology are rarely explicitly discussed. This perspective provides a critique of the various ethical frameworks that can be used in risk assessments and risk management decisions. The goal is to acknowledge philosophical weaknesses that should be considered and communicated in order to improve the public acceptance of the work of risk analysts. 相似文献