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   345篇
  免费   24篇
各国政治   19篇
工人农民   53篇
世界政治   14篇
外交国际关系   19篇
法律   185篇
中国政治   8篇
政治理论   66篇
综合类   5篇
  2024年   1篇
  2023年   5篇
  2022年   5篇
  2021年   5篇
  2020年   12篇
  2019年   15篇
  2018年   13篇
  2017年   26篇
  2016年   24篇
  2015年   20篇
  2014年   14篇
  2013年   57篇
  2012年   22篇
  2011年   15篇
  2010年   14篇
  2009年   18篇
  2008年   15篇
  2007年   9篇
  2006年   13篇
  2005年   13篇
  2004年   13篇
  2003年   10篇
  2002年   7篇
  2001年   5篇
  1999年   1篇
  1998年   2篇
  1997年   4篇
  1996年   1篇
  1995年   2篇
  1994年   1篇
  1992年   1篇
  1989年   2篇
  1988年   1篇
  1987年   1篇
  1985年   1篇
  1982年   1篇
排序方式: 共有369条查询结果,搜索用时 0 毫秒
241.
242.
243.
Starting from the early nineteenth century, western colonial activities have opened up a large area of Southeast Asia for economic penetration. Chinese family business, with its extensive familial and cultural networks, has a niche in these frontier areas where economic and legal institutions were embryonic or ineffective. In Southeast Asia, Chinese extended families are often geographically dispersed. By spreading wealth across borders, these families have not only diversified their business risk, but also built up a mechanism to enforce business obligations cross borders. Contractual obligations in business could always be enforced by one’s familial and communal mechanisms without recourse to legal authority or institutions outside the communities. It helps to explain why the Overseas Chinese communities, over the centuries, have played an important part in the ties which China has forged with its neighbouring regions in Asia. By looking into the historical transformation of a traditional Chinese family business under five generations of patriarchal leadership, this article intends to examine the validity of the above thesis. Eu Yan Sang (EYS), a famous manufacturer and retailer of Chinese medicines over the past 120 years, is the focus of this study.  相似文献   
244.
245.
We study the relationship between school characteristics andhousing prices in Mecklenburg County, North Carolina, between1994 and 2001. During this period, the school district was operatingunder a court-imposed desegregation order and drew school boundariesso that students living in the same neighborhoods were oftensent to very different schools in terms of racial mix and averagetest scores of the students. We use differences in housing pricesalong assignment zone boundaries to disentangle the effect ofschools and other neighborhood characteristics. We find systematicdifferences in house prices along school boundaries althoughthe impact of schools is only one-quarter as large as the naivecross-sectional estimates would imply. Part of the impact ofschool assignments is mediated by differences in the characteristicsof the population and the quality of the housing stock thathave arisen on either side of the school assignment boundary.  相似文献   
246.
247.
Fired cartridge cases are a common type of evidence found at crime scenes. However, due to the high chamber temperatures and touch nature of this evidence, DNA testing is not commonly sought because it is believed DNA is only present in low levels, whether it is due to initial low levels of DNA and/or DNA degradation from the heat or inhibition of the PCR reaction. Moreover, very few laboratories report STR typing success with fired cases. This study focused on obtaining STR profiles from fired cartridge cases using the AmpFℓSTR® MiniFiler™ kit, which is designed to amplify DNA from low level, inhibited, and degraded samples. Comparisons to other STR amplification kits were also conducted. In attempt to simulate casework, random individuals loaded cartridges into a firearm. DNA was recovered from the fired cartridge cases using the double swab technique and extracted using an automated large volume DNA IQ™ method. Initially, testing focused on known shedders handling cartridges for 30 s prior to firing. A significantly greater number of alleles was obtained following amplification with the MiniFiler™ kit versus the PowerPlex® 16 BIO kit. No alleles were observed using the Identifiler® kit. In an attempt to better simulate casework, a random selection of laboratory personnel handled shotshells for as long as needed to load and fire the weapon. In this mock sample study, the MiniFiler™ kit successfully amplified an average of 22% of expected alleles from DNA recovered from shotshell cases versus the PowerPlex® 16 BIO kit where an average of 7% of alleles were observed. However, the total number of alleles obtained from the two kits was not significantly different. The quality of the DNA obtained from fired cases was studied with evidence of inhibition in at least 11% of shotshell case samples. After swabbing the head and the hull of three shotshell cases separately, a significantly greater number of alleles was obtained from the hull as opposed to the head of the fired shotshell case. In addition, after firing, various internal firearm surfaces were swabbed, including the chamber of barrel, ejection port, and breechface, in an attempt to obtain amplifiable DNA. DNA was obtained from the chamber of the barrel and was amplifiable using the MiniFiler™ kit, although mixtures were obtained with extensive drop-in and drop-out making this analysis unlikely to aid an investigation.  相似文献   
248.
The regulation of cannabis in the United States is inconsistent and contradictory, to put it mildly. While marijuana remains classified as a Schedule I substance under the federal Controlled Substance Act—in the same category as heroin and morphine, with accompanying criminal penalties up to and including life imprisonment for its production, distribution, and possession—as of the end of 2020, eleven states and the District of Columbia had legalized recreational marijuana use and thirty-six states and the District of Columbia had decriminalized the use of marijuana for medical purposes. Despite the trend toward legalization, however, marijuana is a stigmatized product. Stigmatized products are those toward which a significant portion of consumers hold negative attitudes and beliefs, whereas the concept of legitimacy is defined as a generalized perception or assumption that the actions of an entity are desirable, proper, or appropriate within some socially constructed system of norms, values, beliefs, and definitions. This article addresses how current legislation and regulations influence consumer perceptions of a product category, and how conflicting regulations (or the lack of regulations) influence the adoption of a stigmatized product such as cannabis (i.e., marijuana and cannabidiol products)  相似文献   
249.
What does it mean to say that a prison has a “culture?” Scholars have long emphasized the presence of a “prison code” and, more recently, a “racial code” as salient cultural domains in men's prisons. Yet, even though most people intuitively understand what is meant by “prison culture,” little progress has been made regarding the conceptualization and operationalization of culture as an analytical construct in prison scholarship. The current study makes two primary contributions to this literature. First, drawing on advances in anthropology, cultural sociology, and cognitive science, we incorporate the concept of cultural schema to provide a concrete analytical construct. Second, we test varying conceptualizations of cultural schema as either characterized by consensus or as overlapping relational structures. Using cultural consensus and correlational class analyses among a sample of 266 incarcerated men, we find little evidence of a culture of consensus for either the prison code or the racial code. Furthermore, we show evidence of heterogenous schema among these cultural domains. Our study is relevant to wider disciplinary work on culture as the problem of analytical precision we address is characteristic of much of the work in criminology and criminal justice that evokes culture as an explanatory device.  相似文献   
250.
Journal of Indian Philosophy - The Sa?hitā Upani?ad [SU] is a little-known Vedic text that presents ‘typical’ Upani?adic teachings on the truth of identity...  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