全文获取类型
收费全文 | 9411篇 |
免费 | 56篇 |
专业分类
各国政治 | 284篇 |
工人农民 | 1139篇 |
世界政治 | 256篇 |
外交国际关系 | 348篇 |
法律 | 5236篇 |
中国政治 | 46篇 |
政治理论 | 2157篇 |
综合类 | 1篇 |
出版年
2023年 | 13篇 |
2022年 | 10篇 |
2021年 | 15篇 |
2020年 | 36篇 |
2019年 | 42篇 |
2018年 | 1311篇 |
2017年 | 1238篇 |
2016年 | 1054篇 |
2015年 | 91篇 |
2014年 | 54篇 |
2013年 | 210篇 |
2012年 | 221篇 |
2011年 | 949篇 |
2010年 | 1042篇 |
2009年 | 616篇 |
2008年 | 769篇 |
2007年 | 730篇 |
2006年 | 39篇 |
2005年 | 100篇 |
2004年 | 194篇 |
2003年 | 168篇 |
2002年 | 55篇 |
2001年 | 34篇 |
2000年 | 33篇 |
1999年 | 26篇 |
1998年 | 18篇 |
1997年 | 28篇 |
1996年 | 31篇 |
1995年 | 48篇 |
1994年 | 38篇 |
1993年 | 17篇 |
1992年 | 20篇 |
1991年 | 21篇 |
1990年 | 13篇 |
1989年 | 10篇 |
1988年 | 8篇 |
1987年 | 10篇 |
1986年 | 12篇 |
1985年 | 11篇 |
1984年 | 17篇 |
1983年 | 19篇 |
1982年 | 11篇 |
1981年 | 12篇 |
1979年 | 9篇 |
1978年 | 16篇 |
1977年 | 13篇 |
1974年 | 4篇 |
1972年 | 3篇 |
1968年 | 3篇 |
1967年 | 5篇 |
排序方式: 共有9467条查询结果,搜索用时 203 毫秒
951.
Based on ethnographic data, this essay analyzes the social order properties of a poor urban street, in a small city in the
northeast United States, on which drug dealing is the principle occupation. Rather than treating drug dealing as an agent
of disorder, we focus on the order properties of drug dealing and the ordered character of the local code of conduct that
develops around it. Like Sudhir Venkatesh (American Journal of Sociology 103:82–111, 1997) we examine the interface between drug dealing and the neighborhood. However, in this small urban space the drug dealers
are not outsiders, rather, they are long term residents: established insiders who are well integrated into community life.
As such their work practices and the requirements they place on behavior in public spaces impact the neighborhood in comprehensive
ways. We detail the phenomenon Elijah Anderson called the “code of the street” (Anderson 1999) as a set of practices and social markers, a local Interaction Order (Goffman, American Sociological Review 48:1–17, 1983; Rawls, Sociological Theory 2:136–149, 1987), that furnishes basic day to day sensemaking tools for residents (Rawls 2009). We propose that this order has a constitutive character that furnishes stable expectations (Garfinkel 1963, 1967) for meaningful social action and identity in the neighborhood. In a context of industrial decline and urban poverty, drug
dealing careers constitute a major socialization factor, that touches everyone here—especially children. 相似文献
952.
This study investigates the factors that shape the attitudes of scientists toward starting their own business or working in
a private sector firm. The analysis is based on data collected from scientists working in the German Max Planck Society, a
research institution devoted to basic science. We find that the scientists’ attractiveness of working in a private sector
firm or of starting their own business differ considerably according to their academic discipline and the self-reported commercial
potential of their research. The ability to take risks, prior work experience in private firms, and personal experience in
cooperating with industry lead to a positive attitude towards switching to private sector employment or entrepreneurship.
Strong willingness to freely distribute research findings is related to a low appeal of private sector work. 相似文献
953.
954.
Li Yen Candy Lee PhD Yong Sheng Lee BSc Jiayu Tan BSc Jun Yu Lee BSc Christopher Kiu-Choong Syn PhD 《Journal of forensic sciences》2024,69(2):430-436
The ability to detect low level DNA brings with it the uncertainty of whether the detected DNA is a result of transfer. To address this uncertainty, a simulation study was conducted in which a mock illicit drug packet was placed into the personal bags of individuals. When the average transit time of the packets was increased from around 2 h to more than 14 h, the percentage of the DNA profiles recovered from the packets which could be attributed to the individuals increased greatly from 5.3% to 48.6%. We found that drug packers who were poor shedders could not be included as contributors to the DNA profiles from the drug packets at all and there was a higher chance that individuals other than themselves could be included as contributors to the DNA profile recovered from drug packets. We also found that it was equally likely that the drug packers who had direct contact with the drug packets and bag owners who did not, could be included as contributors to the DNA profiles recovered from the packets. The results in this study highlight the importance of taking into consideration the transit time of drug packet, the shedder status of the alleged packer and the history of an item, when evaluating DNA evidence in the context of illicit drug activities. 相似文献
955.
Using stochastic methods we illustrate that the Provisional Irish Republican Army's (PIRA) network is clustered along three primary dimensions: (a) brigade affiliation, (b) whether the member participated in violent activities, and (c) task/role within PIRA. While most brigades tended to foster connections within the brigade (that is, “closure”), the tendency to do so varied across the organization. Members who engaged with violent activities were far more likely to connect with each other; in later periods there is polarization into those who engage in violent activities and those who do not. Across brigades, those who engage in a particular task and role (improvised explosive device [IED] constructor, IED planter, gunman, robber/kidnapper/drug smuggler/hijacker) are more likely to connect with others who do the same task or play the same role than with other members who fulfill other roles. Standard forms of homophily (that is, the tendency to make connections with people who are similar in terms of demography or status) play a very weak role in explaining which members interact with one another. Finally, our analysis illustrates clear patterns of relational change that correspond to changes in the formal structures that PIRA's leadership promoted. 相似文献
956.
Charlotte Heath-Kelly Lee Jarvis Christopher Baker-Beall 《Critical Studies on Terrorism》2014,7(1):1-10
The articles in this special issue are drawn from papers presented at a conference titled Critical Terrorism Studies: Practice, Limits and Experience. The conference was organised by the Critical Studies on Terrorism Working Group of the British International Studies Association (BISA). The event was supported by both a BISA workshop grant and by Loughborough University’s Centre for the Study of International Governance (CSIG) and was held at Loughborough University from 9–10 September 2013. The conference aimed to explore what we know about terrorism and counterterrorism and importantly to ask how we know it. Reflecting the recent “materialist”, “everyday”, “experiential” and “narrative” turns in the fields of International Relations (IR), Geography and Cultural Theory, the event brought together scholars and practitioners to reflect on practices of research and knowledge production in Critical Terrorism Studies and related fields. The articles in this special issue reflect those aims. 相似文献
957.
Yun Sik Nam Ph.D. Jin Sook Park M.S. Yeonhee Lee Ph.D. Kang‐Bong Lee Ph.D. 《Journal of forensic sciences》2014,59(3):800-805
Questioned documents examined in a forensic laboratory sometimes contain signatures written with ballpoint pen inks; these signatures were examined to assess the feasibility of micro‐attenuated total reflectance (ATR) Fourier transform infrared (FTIR) spectroscopy as a forensic tool. Micro‐ATR FTIR spectra for signatures written with 63 ballpoint pens available commercially in Korea were obtained and used to construct an FTIR spectral database. A library‐searching program was utilized to identify the manufacturer, blend, and model of each black ballpoint pen ink based upon their FTIR peak intensities, positions, and patterns in the spectral database. This FTIR technique was also successfully used in determining the sequence of homogeneous line intersections from the crossing lines of two ballpoint pen signatures. We have demonstrated with a set of sample documents that micro‐ATR FTIR is a viable nondestructive analytical method that can be used to identify the origin of the ballpoint pen ink used to mark signatures. 相似文献
958.
Emily Ogden M.D. Cynthia Schandl M.D. Ph.D. Lee Marie Tormos M.D. 《Journal of forensic sciences》2014,59(6):1672-1674
Ectodermal dysplasia comprises a group of disorders affecting ectodermal tissues. Severity depends on the genetic aberration; hyperpyrexia secondary to absence of sweat glands is a common complication. Treatment is supportive. This case report describes a 1‐month, 27‐day‐old male infant with a diagnosis of X‐linked recessive anhidrotic ectodermal dysplasia. On the day of his death, his mother swaddled him in a blanket and placed him on the couch at 5:30 am. When she picked him up at 8:00 am, he was unresponsive. At the emergency department, his rectal temperature was 40°C. Postmortem blood culture was positive for group B streptococcus, a possible etiology for fever. It is vital to teach parents that close monitoring of children with ectodermal dysplasia is necessary, as an increase in body temperature can become life threatening. 相似文献
959.
Gavin M. Lee Robert M. Bohm Lynn M. Pazzani 《American Journal of Criminal Justice》2014,39(3):642-659
This study tests the three hypotheses derived from the written opinion of Justice Thurgood Marshall in Furman v Georgia in 1972. Subjects completed questionnaires at the beginning and the end of the fall a semester. Experimental group subjects were enrolled in a death penalty class, while control group subjects were enrolled in another criminal justice class. The death penalty class was the experimental stimulus. Findings provided strong support for the first and third hypotheses, i.e., subjects were generally lacking in death penalty knowledge before the experimental stimulus, and death penalty proponents who scored “high” on a retribution index did not change their death penalty opinions despite exposure to death penalty knowledge. Marshall’s second hypothesis--that death penalty knowledge and death penalty support were inversely related--was not supported by the data. Two unexpected findings were that death penalty proponents who scored “low” on a retribution index also did not change their death penalty opinions after becoming more informed about the subject, and that death penalty knowledge did not alter subjects’ initial retributive positions. Suggestions for future research are provided. 相似文献
960.