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   6720篇
  免费   251篇
各国政治   520篇
工人农民   192篇
世界政治   683篇
外交国际关系   433篇
法律   2815篇
中国政治   46篇
政治理论   2196篇
综合类   86篇
  2023年   35篇
  2021年   28篇
  2020年   98篇
  2019年   123篇
  2018年   163篇
  2017年   188篇
  2016年   213篇
  2015年   137篇
  2014年   190篇
  2013年   1069篇
  2012年   185篇
  2011年   208篇
  2010年   172篇
  2009年   169篇
  2008年   211篇
  2007年   278篇
  2006年   227篇
  2005年   215篇
  2004年   221篇
  2003年   225篇
  2002年   215篇
  2001年   124篇
  2000年   130篇
  1999年   105篇
  1998年   138篇
  1997年   114篇
  1996年   111篇
  1995年   90篇
  1994年   79篇
  1993年   99篇
  1992年   77篇
  1991年   98篇
  1990年   85篇
  1989年   77篇
  1988年   83篇
  1987年   90篇
  1986年   92篇
  1985年   61篇
  1984年   71篇
  1983年   75篇
  1982年   69篇
  1981年   55篇
  1980年   54篇
  1979年   49篇
  1978年   51篇
  1977年   52篇
  1976年   29篇
  1975年   29篇
  1974年   30篇
  1973年   38篇
排序方式: 共有6971条查询结果,搜索用时 46 毫秒
1.
Professional baseball players are often thought of as making multi-million-dollar salaries, but most professional baseball players have recently made under $15,000 a year. Minor league players toiled under an onerous system resulting from baseball's judicially created antitrust exemption and lobbying efforts that exempted them from minimum wage and overtime. These factors allowed teams to impose a uniform player contract (UPC) on players with numerous unconscionable provisions for years. However, a late-night Tweet in August of 2022 sent shockwaves through the sports and labor world, announcing that the Major League Baseball Players Association (MLBPA) was sending out authorization cards to represent minor league players. After years of fighting to maintain the authority to impose conditions on minor league players, through lobbying and litigation, Major League Baseball (MLB) turned over a new leaf and recognized the unionization of minor league players under the MLBPA less than three weeks later. In light of this long sought-after recognition, this article takes a novel approach. First, it provides historical context for baseball's unique ability to impose working conditions on minor leaguers without significant concern for legal ramifications. Second, it provides an overview of the doctrine of contractual unconscionability and analyzes the prior UPC as an unconscionable agreement. Finally, it details the historic unionization process and makes detailed recommendations to ameliorate the unconscionable conditions minor league players have faced when they negotiate with MLB owners to draft their initial collective bargaining agreement.  相似文献   
2.
Semaan et al. (J Forensic Res, 2020, 11, 453) discuss a mock case “where eight different individuals [P1 through P8] could not be excluded in a mixed DNA analysis. Even though … expert DNA mixture analysis software was used.” Two of these are the true donors. The LRs reported are incorrect due to the incorrect entry of propositions into LRmix Studio. This forced the software to account for most of the alleles as drop-in, resulting in LRs 60–70 orders of magnitude larger than expected. P1, P2, P4, P5, and P8 can be manually excluded using peak heights. This has relevance when using LRmix which does not use peak heights. We extend the work using the same two reference genotypes who were the true contributors as Semaan et al. (J Forensic Res, 2020, 11, 453). We simulate three two-donor mixtures with peak heights using these two genotypes and analyze using STRmix?. For the simulated 1:1 mixture, one of the non-donors’ LRs supported him being a contributor when no conditioning was used. When considered in combination with any other potential donors (i.e., with conditioning), this non-donor was correctly eliminated. For the 3:1 mixture, all results correctly supported that the non-donors were not contributors. The low-template 4:1 mixture LRs with no conditioning showed support for all eight profiles as donors. However, the results from pair-wise conditioning showed that only the two ground truth donors had LRs supporting that they were contributors to the mixture. We recommend the use of peak heights and conditioning profiles, as this allows better sensitivity and specificity even when the persons share many alleles.  相似文献   
3.
This study describes the performance of handheld Raman devices for determining whether suspect pharmaceutical tablets declared to contain controlled substances were consistent with authentic (CWA) or not consistent with authentic (NCWA) tablets using a simple, rapid, field-friendly method capable of being used by nonexperts. Twenty-five authentic products and 84 known NCWA tablets were examined using three “parent” devices for a total of 327 analyses. On average, the parent devices yielded a true pass rate of 100%, a true fail rate of 98.4%, a false pass rate of 1.6%, and a false fail rate of 0%. The methods/libraries were then transferred to 13 identical “daughter” devices, which were used to examine 10 suspect finished dosage forms in duplicate (six known NCWA tablets and four authentic tablets) for a total of 260 measurements. On average, the daughter devices had a true pass rate of 100%, a true fail rate of 95.5%, a false pass rate of 4.5%, and a false fail rate of 0.0%. These data demonstrate that the parent–daughter electronic transfer method was successful, which permits the ability to develop methods in the laboratory that can be seamlessly pushed out to field devices. The methods can then be used to (i) prioritize samples for additional testing using other more time-consuming laboratory-based techniques needed to detect and quantify active ingredients and (ii) help support the interdiction of dangerous tablets at ports of entry, thereby preventing them from reaching the supply chain.  相似文献   
4.
Tomlin  Patrick 《Law and Philosophy》2020,39(4):351-379
Law and Philosophy - The individualist nature of much contemporary just war theory means that we often discuss cases with single attackers. But even if war is best understood in this individualist...  相似文献   
5.
Abstract

What is ‘relational theorizing’ in International Relations and what can it offer? This article introduces a thematic section that responds to these questions by showing two things. First, relational theorizing is not a doctrine or a method, but a set of analyses that begin with relations rather than the putative essences of constitutively autonomous actors. Second, relational theorizing has emerged from different geo-linguistic traditions, and a relational approach to International Relations (IR) can offer the language and space for increased and productive engagement beyond Anglophone scholarship. This thematic section takes a significant step in this direction by staging a dialogue between Sinophone and Anglophone scholarship on relational IR theorizing. Such an engagement shows points of comparison and contrast, convergence and divergence. In this way, the essays presented here contribute to developing a more ‘global’ IR.  相似文献   
6.
Psychological Injury and Law - The extent to which persons may feign or malinger psychological symptoms is an important concern for civil litigation, specifically in the context of personal injury....  相似文献   
7.
In the case of suspicious deaths, the technique of 1:1 taping is often used in Belgium. It consists of affixing a large number of adhesive tapes to the body of the victim. It is conventionally aimed at obtaining microtraces (e.g., fibers, hair) and is usually not used for DNA analysis. However, in some cases, DNA analysis of certain areas of interest identified on the 1:1 taping material can offer a last resort solution. The four-step method that is described in this article involves the selection of areas of interest on the body (Step 1), the selection of the corresponding tapes (Step 2), the decontamination of the tapes (Step 3), the selection of areas of interest on the tapes, for DNA sampling (Step 4). The method is illustrated by its successful application in four murder cases. In each case, DNA profiles of good quality could be identified, including profiles of persons different from the victim.  相似文献   
8.
This concept paper presents a theory of environmental scarcity developed byHomer-Dixon. Homer-Dixon developed a model to describe the consequences of scarcity for sub-national violence in third world countries. This paper hasfour interrelated purposes. First, it presents the model of scarcity developedby Thomas Homer-Dixon in 1999. Second, it assesses the way in which the scarcity model contextualizes criminal justice and criminology research, andby extension, how research in crime and justice processes can broaden the scarcity model. Third, it applies elements of the model to the United States,a goal that represents a generalization of the model from third-world to first-world settings. Fourth, it presents a particular case, the migrationof African-Americans from the rural South to urban centers in the 1950s and1960s and consequent inner-city violence in the 1960s, that displays manyelements of the environmental scarcity model.  相似文献   
9.
The Central Bank of Bahrain came into existence on 7 Septemberand has taken over all the tasks previously conducted by theBahrain Monetary Agency (‘BMA’). The Central Bankof Bahrain and Financial Institutions Law (‘CBB Law’)issued by Decree No. 64 of 2006 gives the CBB strong operationalindependence and a wider range of enforcement powers. The CBBLaw has also replaced the Insurance Law (Legislative DecreeNo. 17  相似文献   
10.
In the history and the study of organizedcrime, the validity and reliability ofsources have been particularly problematicmatters. Governmental fact-finding bodiesare frequently cited in this research area,including the now-defunct PennsylvaniaCrime Commission. For example, studiesoccasionally reference Philadelphia's``Black Mafia,' and each of these inquiriesrelies upon the work of the PennsylvaniaCrime Commission for ``analysis' of thegroup. In this article, the Commission'sfindings are presented and then critiqued. Significant Black Mafia activitiesunder-researched by the Commission are nextanalyzed, adding context to the currentunderstanding of the group. The articlechallenges current assumptions, places thegroup's history in context, and illustratesthe utility of primary source research.  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