全文获取类型
收费全文 | 13481篇 |
免费 | 1062篇 |
国内免费 | 2篇 |
专业分类
管理学 | 2175篇 |
民族学 | 77篇 |
人才学 | 3篇 |
人口学 | 1040篇 |
丛书文集 | 71篇 |
理论方法论 | 1676篇 |
综合类 | 229篇 |
社会学 | 7375篇 |
统计学 | 1899篇 |
出版年
2021年 | 116篇 |
2020年 | 293篇 |
2019年 | 551篇 |
2018年 | 386篇 |
2017年 | 590篇 |
2016年 | 523篇 |
2015年 | 455篇 |
2014年 | 491篇 |
2013年 | 2150篇 |
2012年 | 541篇 |
2011年 | 523篇 |
2010年 | 431篇 |
2009年 | 379篇 |
2008年 | 404篇 |
2007年 | 385篇 |
2006年 | 381篇 |
2005年 | 356篇 |
2004年 | 337篇 |
2003年 | 258篇 |
2002年 | 271篇 |
2001年 | 334篇 |
2000年 | 285篇 |
1999年 | 225篇 |
1998年 | 177篇 |
1997年 | 164篇 |
1996年 | 162篇 |
1995年 | 149篇 |
1994年 | 158篇 |
1993年 | 157篇 |
1992年 | 158篇 |
1991年 | 154篇 |
1990年 | 158篇 |
1989年 | 154篇 |
1988年 | 139篇 |
1987年 | 152篇 |
1986年 | 116篇 |
1985年 | 151篇 |
1984年 | 157篇 |
1983年 | 142篇 |
1982年 | 123篇 |
1981年 | 94篇 |
1980年 | 111篇 |
1979年 | 114篇 |
1978年 | 102篇 |
1977年 | 87篇 |
1976年 | 89篇 |
1975年 | 99篇 |
1974年 | 94篇 |
1973年 | 69篇 |
1972年 | 63篇 |
排序方式: 共有10000条查询结果,搜索用时 656 毫秒
291.
Damian E. M. Milton 《Disability & Society》2017,32(10):1671-1676
With the passing of Robert M. Pirsig, I felt that it was an appropriate time to write a tribute to his work and the influence it has had on my own theorising in regard to autistic ways of being. This reflection utilises the concept of an ‘aut-ethnography’ to examine passages that I had highlighted word by word when I first read Pirsig’s book: Zen and the Art of Motorcycle Maintenance. These fragments contain links to a number of theoretical ‘lines of flight’ within my own work and that of others, from his concepts of dynamic ‘quality’ to his discussion on the tension between scientific method and lived experience. 相似文献
292.
293.
Marwan Diab Raija‐Leena Punamäki Esa Palosaari Samir R. Qouta 《Social Development》2014,23(2):215-231
Social resources are considered important protectors in traumatic conditions, but few studies have analyzed their role in psychosocial interventions among war‐affected children. We examined (1) whether a psychosocial intervention (teaching recovery techniques, TRT) is effective in improving peer and sibling relations, and (2) whether these potentially improved relations mediate the intervention's impacts on children's mental health. Participants were 428 Palestinian children [10–13 (mean = 11.29, standard deviation SD = .68)‐year‐old girls (49.4 percent) and boys (50.6 percent)], who were cluster‐randomized into the TRT and wait‐list control groups. They reported the quality of peer (friendship and loneliness) and sibling (intimacy, warmth, conflict, and rivalry) relations, and posttraumatic stress, depressive and psychological distress symptoms, as well as psychosocial well‐being at baseline (T1), postintervention (T2), and six month follow‐up (T3). Results showed gender‐specific TRT intervention effects: Loneliness in peer relations reduced among boys and sibling rivalry reduced among girls. The TRT prevented the increase in sibling conflict that happened in the control group. The mediating hypothesis was partially substantiated for improved peer relations, and beneficial changes in sibling relations were generally associated with improved mental health. 相似文献
294.
Philip Looper David George Eric J. Johnson Susan E. Conway 《Journal of American college health : J of ACH》2017,65(7):513-517
Objective: To examine the perceptions among faculty and health professional students regarding mandatory vaccination policies on a health sciences campus. Participants: A total of 296 faculty and 244 students completed surveys during Fall 2015. Methods: The online survey administered to individuals who received the influenza vaccine during the fall 2015 influenza vaccination clinic season included five items evaluating perceptions of employer mandatory vaccination requirements. Results: Chi-square analysis indicated that although faculty and students agree mandatory vaccinations in a health care environment are appropriate, faculty are more likely than students to get vaccinated in the absence of a mandate. Additionally, a small fraction of faculty would consider employment elsewhere when facing this mandate. Conclusions: Overall, faculty and students had favorable perceptions about mandatory influenza vaccine policies. Since students were less likely to be vaccinated in the absence of a mandate, education of students should be improved to support the importance of vaccinations in a health care environment. 相似文献
295.
296.
297.
298.
Alicja Jac‐Kucharski 《International migration (Geneva, Switzerland)》2012,50(6):150-165
Human trafficking is a global problem. In this paper, I seek to find the determinants of international human trafficking by using the US as a case study. Previous studies have drawn primarily from the migration literature, proposing hypotheses that focus on economic factors, the level of democracy and other “push” factors in the countries of origin that create incentives for individuals to migrate. However, we know that international human trafficking is an involuntary form of migration and may be influenced by additional factors. I hypothesize that factors that influence the cost–benefit calculation of the trafficker determine the volume of human trafficking, in addition to the factors that affect the size of the pool of trafficking victims. I test my theory using the negative binomial regression model. My results indicate that while income inequality within a country and poor protection of women's rights are likely to produce a specific pool of victims, it is the reduction of operational costs for the trafficker that increases the number of individuals who are trafficked. 相似文献
299.
Using In Vitro High‐Throughput Screening Data for Predicting Benzo[k]Fluoranthene Human Health Hazards 下载免费PDF全文
Today there are more than 80,000 chemicals in commerce and the environment. The potential human health risks are unknown for the vast majority of these chemicals as they lack human health risk assessments, toxicity reference values, and risk screening values. We aim to use computational toxicology and quantitative high‐throughput screening (qHTS) technologies to fill these data gaps, and begin to prioritize these chemicals for additional assessment. In this pilot, we demonstrate how we were able to identify that benzo[k]fluoranthene may induce DNA damage and steatosis using qHTS data and two separate adverse outcome pathways (AOPs). We also demonstrate how bootstrap natural spline‐based meta‐regression can be used to integrate data across multiple assay replicates to generate a concentration–response curve. We used this analysis to calculate an in vitro point of departure of 0.751 μM and risk‐specific in vitro concentrations of 0.29 μM and 0.28 μM for 1:1,000 and 1:10,000 risk, respectively, for DNA damage. Based on the available evidence, and considering that only a single HSD17B4 assay is available, we have low overall confidence in the steatosis hazard identification. This case study suggests that coupling qHTS assays with AOPs and ontologies will facilitate hazard identification. Combining this with quantitative evidence integration methods, such as bootstrap meta‐regression, may allow risk assessors to identify points of departure and risk‐specific internal/in vitro concentrations. These results are sufficient to prioritize the chemicals; however, in the longer term we will need to estimate external doses for risk screening purposes, such as through margin of exposure methods. 相似文献
300.