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   12143篇
  免费   369篇
各国政治   789篇
工人农民   350篇
世界政治   1119篇
外交国际关系   582篇
法律   6195篇
中国政治   70篇
政治理论   3279篇
综合类   128篇
  2020年   145篇
  2019年   191篇
  2018年   271篇
  2017年   277篇
  2016年   290篇
  2015年   205篇
  2014年   246篇
  2013年   1612篇
  2012年   277篇
  2011年   306篇
  2010年   274篇
  2009年   280篇
  2008年   329篇
  2007年   388篇
  2006年   353篇
  2005年   322篇
  2004年   326篇
  2003年   337篇
  2002年   316篇
  2001年   318篇
  2000年   289篇
  1999年   241篇
  1998年   216篇
  1997年   182篇
  1996年   168篇
  1995年   154篇
  1994年   146篇
  1993年   164篇
  1992年   185篇
  1991年   236篇
  1990年   202篇
  1989年   204篇
  1988年   202篇
  1987年   231篇
  1986年   212篇
  1985年   196篇
  1984年   202篇
  1983年   201篇
  1982年   162篇
  1981年   141篇
  1980年   130篇
  1979年   132篇
  1978年   117篇
  1977年   104篇
  1976年   91篇
  1975年   84篇
  1974年   93篇
  1973年   99篇
  1972年   78篇
  1969年   68篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
951.
952.
Recent research suggests a conditional relationship between states' domestic regimes or ideologies and their alliances. I argue that the likelihood that alliances will form along ideological lines increases with the fear among at least two governments of ideology I that they are threatened by transnational rival ideology J . Understanding the power of demonstration effects—that when J advances in one country it gains credibility in others— I -governments will have an incentive to enter an international agreement to oppose J domestically. Such domestic-security agreements will exacerbate the security dilemma, raising fears among J -governments that I -governments are forming a bloc directed at J and J -governments. J -governments will tend to respond by increasing cooperation among themselves, inducing corresponding fears among I -governments; the coalescing I - and J -blocs will tend to spiral into alliances. I - or J -governments wishing to avoid ideologically based alliances may signal an absence of rollback intentions through various means. I demonstrate this process of alliance formation with a lengthy case study of alliance formation in the Holy Roman Empire in the sixteenth century.  相似文献   
953.
This article reviews the recent April 2, 2007 Supreme Court decision in the Massachusetts v. EPA, a highly important case regarding greenhouse gases. The case centered on the Court's review of EPA's denial of a petition to regulate greenhouse gas emissions from new motor vehicles. The Court required EPA to reconsider its denial. The Court found that. 1) the petitioners have standing to challenge EPA's denial of their petition; 2) the Court has the authority to review the denial of the petition; and 3) the Clean Air Act authorizes EPA to regulate greenhouse gas emissions from new motor vehicles. This article looks specifically at the Court's analysis of standing and jurisdiction by Justice Stevens, who wrote the Court's majority opinion, and two dissenting opinions by Justices Roberts and Scalia. Most interesting is how the closely divided Justices (5 to 4 decision) viewed, very differently, the issues regarding standing, the evidence that emissions from new motor vehicles are causing global warming and harm to Massachusetts, and the agency's judgment in denying the petition. Lastly, the article speculates on the impact of the decision and the current activities taking place at the state and regulated community level involving future regulation, litigation, and opportunities by various companies and coalitions to reduce greenhouse gas emissions. The article then presents five broad areas where companies that emit greenhouse gases should need to maintain or increase awareness to better position themselves in the global greenhouse gas movement.  相似文献   
954.
Legal context: Trade mark oppositions are routinely filed by brand owners againstan offending application or registration in either a pre-grantor a post-grant procedure before the respective national trademark office, but in Japan, there are several nuanced trade markopposition practice differences that should not be taken forgranted. Key issues: In light of persisting and recent abysmal trade mark opponentsuccess rates, favourable trade mark invalidation appeal (IA)data, and the inherent procedural handicaps against opponentsin Japan's current trade mark opposition system, Trade markowners would be better served by using Japan's trade mark IAprocedures to police against conflicting trade marks in Japanand not mechanistically file oppositions in Japan as one couldin other important trade mark jurisdictions like the USA orEurope. Practical significance: Japan's trade mark opposition and IA procedures offer complementaryoptions to police against conflicting trade marks so choosingthe right procedure is critical to its achieving the mission'ssuccess in curbing competitors' marks in the world's secondlargest free market economy.  相似文献   
955.
A range of fibre samples was measured using J&M MSP400 and J&M MSP800 microspectrophotometers across the visible and UV/visible wavelength ranges respectively. The first derivative of the absorbance spectra was then calculated and studied. When the absorbance spectra produced for some samples were broad and featureless, the first derivative spectra provided more points of comparison that facilitated discrimination. For many of the samples, calculating the first derivative did not result in any additional discrimination due to the high number of points of comparison present in the absorbance spectra. However, for the samples that exhibited a high level of intra-sample colour variation (e.g. through uneven dye uptake common in cotton and wool, etc.), which was evident in the absorbance spectra, the associated first derivative spectra highlighted this variation between the fibres and could potentially have resulted in false exclusions. The results show that whilst calculating first derivative can be a useful aid in the comparison of spectra, a high degree of caution is required when applying this method to fibres which exhibit a large intra-sample variation in colour.  相似文献   
956.
Matthew Hutton's fifth edition on the taxation of trusts andestates, one of Tottel's core tax annuals presents the law asit was  相似文献   
957.
Human blood is the body fluid most commonly encountered at crime scenes, and blood detection may aid investigators in reconstructing what occurred during a crime. In addition, blood detection can help determine which items of evidence should be processed for DNA-STR testing. Unfortunately, many common substances can cause red-brown stains that resemble blood. Furthermore, many current human blood detection methods are presumptive and prone to false positive results. Here, the developmental validation of a new blood identification test, Rapid Stain Identification™-Blood (RSID™-Blood), is described. RSID™-Blood utilizes two anti-glycophorin A (red blood cell membrane specific protein) monoclonal antibodies in a lateral flow strip test format to detect human blood. We present evidence demonstrating that this test is accurate, reproducible, easy to use, and highly specific for human blood. Importantly, RSID™-Blood does not cross-react with ferret, skunk, or primate blood and exhibits no high-dose hook effect. Also, we describe studies on the sensitivity, body fluid specificity, and species specificity of RSID™-Blood. In addition, we show that the test can detect blood from a variety of forensic exhibits prior to processing for DNA-STR analysis. In conclusion, we suggest that RSID™-Blood is effective and useful for the detection of human blood on forensic exhibits, and offers improved blood detection when compared to other currently used methods.  相似文献   
958.
Sexing of human clavicles using length and circumference measurements   总被引:1,自引:0,他引:1  
Measurement of clavicular length and circumference, and computation of clavicular robustness and length-circumference product from 724 autopsied adults of known age, sex, and body length between the ages of 15 and 96 years produced useful sex-predictive values. This predominantly North American white population contained 560 males and 164 females with intact, nondeformed clavicles. Clavicle length and circumference and particularly their product have been found useful in sexing, but robustness as a single trait has not. Despite a significant overlap of male and female values, the use of single cutoff values allowed correct sex assignment of up to 93% of the entire study population, including 94% of males and 89% of females. The ratios of body length to clavicle circumference and to clavicle length are on average greater in women than in men. The former ratio yields male predictive values greater than 95% for those individuals with ratios falling below the cutoff value of 43, whereas the latter ratio is a relatively poor sex predictor.  相似文献   
959.
Can the discharge by a trustee of a beneficiary's moral obligationconstitute a benefit? The answer to this question was fundamentalto an application to the High Court in London by trustees fordirections of whether they could exercise a power of appointmentunder a trust deed and release a substantial part of the trustcapital to the life tenant who wanted to devote the money tocharitable causes. In principle the court decided that the exercise of the relevantpower in this way could be taken as being of benefit for thebeneficiary but, under the circumstances of this case, the intendeduse of the funds could not properly be said to be for her benefit. Under a marriage settlement, created in 1964, the trust deedgave the trustees a general  相似文献   
960.
Goldsworth  John 《Trusts & Trustees》2007,13(10):615-616
In the past a new edition of this standard textbook was producedevery eight years. As David Hayton says, in his preface, thatnow with the need for more frequent editions in light of increasingrapid developments in the trust world this seventeenth editioncomes out three years after the previous one. David Hayton is joined in the editorial role by Paul Matthewsand Charles Mitchell. The former is responsible for preparingthe Administration of Trusts section and Charles Mitchell forpreparing the division of the book on Trusts Imposed by Lawand The Consequences of a Breach of Trust. Jonathan Harris coversthe  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