全文获取类型
收费全文 | 514篇 |
免费 | 23篇 |
专业分类
各国政治 | 44篇 |
工人农民 | 29篇 |
世界政治 | 84篇 |
外交国际关系 | 36篇 |
法律 | 198篇 |
中国政治 | 2篇 |
政治理论 | 141篇 |
综合类 | 3篇 |
出版年
2023年 | 3篇 |
2021年 | 4篇 |
2020年 | 11篇 |
2019年 | 9篇 |
2018年 | 18篇 |
2017年 | 19篇 |
2016年 | 16篇 |
2015年 | 6篇 |
2014年 | 10篇 |
2013年 | 83篇 |
2012年 | 15篇 |
2011年 | 8篇 |
2010年 | 8篇 |
2009年 | 13篇 |
2008年 | 13篇 |
2007年 | 22篇 |
2006年 | 29篇 |
2005年 | 16篇 |
2004年 | 15篇 |
2003年 | 17篇 |
2002年 | 12篇 |
2001年 | 9篇 |
2000年 | 14篇 |
1999年 | 18篇 |
1998年 | 11篇 |
1997年 | 13篇 |
1996年 | 8篇 |
1995年 | 4篇 |
1994年 | 3篇 |
1993年 | 7篇 |
1992年 | 7篇 |
1991年 | 8篇 |
1990年 | 7篇 |
1989年 | 7篇 |
1988年 | 12篇 |
1987年 | 7篇 |
1986年 | 9篇 |
1985年 | 4篇 |
1984年 | 7篇 |
1983年 | 5篇 |
1982年 | 2篇 |
1981年 | 2篇 |
1980年 | 4篇 |
1979年 | 7篇 |
1978年 | 2篇 |
1976年 | 3篇 |
1968年 | 3篇 |
1966年 | 1篇 |
1965年 | 1篇 |
1943年 | 1篇 |
排序方式: 共有537条查询结果,搜索用时 0 毫秒
51.
52.
Accidental poisonings involving carbon monoxide, heating systems, and confined spaces 总被引:2,自引:0,他引:2
Eleven incidents of carbon monoxide (CO) intoxication resulting in sixteen fatalities are reported. All of the cases involved heating systems as either the source or the means of distributing the CO. Blood samples were analyzed for ethanol and CO. Elevated blood CO saturations were found in 14 of the 16 victims while none of the victims had a blood ethanol concentration greater than 0.10% (w/v). 相似文献
53.
54.
We measured stable hydrogen isotope ratios in the primary feathers of two subspecies of goldfinches, confiscated by the Police and the Royal Society for the Prevention of Cruelty to Animals (RSPCA) on suspicion that they had been illegally taken from the wild. We found significant differences in the delta2H values of the two subspecies indicating that they were sourced from different geographical regions. Our results correlated with isotopic precipitation maps and with the known distribution of the two subspecies of goldfinch. We believe that this technique could be used by law enforcement agencies to determine the origin of birds in cases where the species or subspecies involved are geographically distinct. 相似文献
55.
The results of grouping tests performed on blood samples collected over a five-year period at the Trinidad and Tobago Forensic Science Centre are presented. The samples were tested using the ABO, PGM, EAP and GLO blood group systems. Phenotypic frequencies and allele frequencies for each system were calculated for the two major ethnic groups of the population, the African and East Indian. Matching probabilities, which can be used in the interpretation of physical evidence in forensic cases, were also calculated. 相似文献
56.
Lisa Thompson 《公共行政管理与发展》2019,39(4-5):193-202
Aid, in the form of financial aid and investment, has become increasingly prevalent in both bilateral and multilateral partnerships in the BRICS. In Africa, the Forum on China–Africa Cooperation provides the official framings for forms of development assistance to the continent, with financial forms of aid available through the New Development Bank and the China–Africa Development Bank (CADFund). This article explores how Chinese international development assistance has influenced South Africa's economic growth and development strategies and is reshaping South Africa as “gateway” to Africa and continental leader. Special economic zones (SEZs) have become a prioritised form of BRICS development collaboration particularly in terms of Chinese trade and investment expansionism into Africa through South Africa. Chinese international development assistance and foreign direct investment in South Africa in particular are very notable and have been strengthened during the Chinese official state visit prior to the Johannesburg BRICS Summit in 2018. The article critically analyses the development policy discourse on BRICS spearheading an alternative model of South–South international cooperation by examining the Coega SEZ in South Africa, hailed as the most SEZ in Africa. The article critically examines the development alternative potential of the Coega SEZ. 相似文献
57.
Self‐driving cars (also known as driverless cars, autonomous vehicles, and highly automated vehicles [HAVs]) will change the regulatory, political, and ethical frameworks surrounding motor vehicles. At the highest levels of automation, HAVs are operated by independent machine agents, making decisions without the direct intervention of humans. The current transportation system assumes human intervention though, including legal and moral responsibilities of human operators. Has the development of these artificial intelligence (AI) and autonomous system (AS) technologies outpaced the ethical and political conversations? This paper examines discussions of HAVs, driver responsibility, and technology failure to highlight the differences between how the policy‐making institutions in the United States (Congress and the Public Administration) and technology and transportation experts are or are not speaking about responsibility in the context of autonomous systems technologies. We report findings from a big data analysis of corpus‐level documents to find that enthusiasm for HAVs has outpaced other discussions of the technology. 相似文献
58.
59.
Assessing law enforcement preparedness to address Internet fraud 总被引:1,自引:0,他引:1
Recent societal concern regarding computer crime was well documented in the research literature. To date, however, modest research addressed how large, local police and sheriff's departments confront Internet fraud. Using data collected from surveys distributed to the seven hundred largest police- and sheriff's departments, the present article addresses law enforcement: (1) preparedness to enforce Internet fraud crimes; (2) perceptions of Internet fraud; (3) cooperative policing efforts; and (4) Internet fraud information dissemination practices. Among other things, results suggested that individuals within these departments believed Internet fraud was problematic, although they lacked the resources to properly address the problem. These results are discussed as they relate to the organizational design of law enforcement agencies and their potential to adapt to innovative crimes. Suggestions are offered for a more effective approach to confronting Internet fraud. 相似文献
60.
John A. Thompson 《Diplomacy & Statecraft》2005,16(4):671-697
During World War II, official definitions of the requirements of United States national security were extended beyond the defense of the western hemisphere to include preventing any single power dominating Eurasia. This article challenges the commonly expressed view that this change was due to a belief that a strategy of continental defense would no longer suffice to protect the physical safety of the United States. The focus is on the period between Munich and Pearl Harbor when U.S policy moved away from the principle of non-involvement embodied in the neutrality legislation of 1935-37. The role in this process of the argument that America's own safety was dependent upon the European balance of power, particularly because of the dangers posed by the development of aviation and the possible suborning of Latin America, is critically examined. It is argued that the broader conception of America's security requirements reflected both a consciousness of the unique power of the United States to determine the outcome of the war and an implicit belief that the values and interests for which the nation should be prepared to fight extended beyond physical security. 相似文献