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91.
Abstract

This study is based upon two premises: (1) the available literature, though voluminous, fails to provide systematic understandings of the complex and evolving relations between China and North Korea; and (2) China and North Korea had been short of being trusted allies bound in blood and belief even before the launch of post-Mao reforms and the normalization of Beijing–Seoul relations. This article dissects this curious relationship into four questions: (1) What does history inform us about China's relations with (North) Korea? (2) Has China communicated effectively with North Korea? (3) Have China and North Korea been ‘trusted allies’? (4) How effective has China been in inducing North Korea to comply with its demands over the years? The authors argue that, geo-strategically, China can hardly afford to put North Korea in an adversarial position. Furthermore, residues of the Factional Incident of 1956 and North Korea's deep-rooted suspicion of China still linger on. These have been the sources of Beijing's dilemma in consistently opting for ‘soft’ measures despite that North Korea's provocative acts and nuclear weapons programs have negatively affected China's interests. From the outset, China and North Korea had been more uncertain allies who had to cooperate with each other under the ideological and geopolitical imperatives of the difficult times. The authors also suggest that it would be misleading to put Sino–North Korean dynamics in a usual category of big power–small nation relations where power asymmetry generally works against the latter. North Korea has undoubtedly been an atypical ‘small nation’. It is due to these limitations that China's pressurizing has not been always effective and that Beijing's reactions have been continuously cyclical. This cyclical trend is not likely to be broken since the upcoming drama of Sino–American rivalry is bound to close the window of such opportunities for China, which will nevertheless regard North Korea increasingly as a liability, if not uncomfortable neighbor.  相似文献   
92.
This article examines Russian Government policy towards Northeast Asia as an interplay between aspirations, which have been expressed by government leaders, parliamentary figures and prominent academics and journalists and actual results. The article uses three levels, global, regional and bilateral, as a basis for the analysis. In terms of global interests the Russian leadership has sought diplomatic balance against the US, in terms of regional interests the leadership has pursued the aim of economic and security integration while at the bilateral level Russian leadership has sought specific benefits from particular relations with China, Japan and South Korea. The article notes that Russia has obtained certain diplomatic benefits from the relationship with China which serve its interests at the global level. At the regional level policy aspirations have been frustrated by Russia's dire economic condition and the tendency to be treated as an ‘outsider’. Russia has benefited from an improvement of bilateral relations with China, Japan and South Korea but these gains do not translate into an improved position at the regional level yet. while the Russian leadership has been nurturing the development of bilateral relationships problems particular to those relationships hinder its wider regional acceptance.  相似文献   
93.
《Journal of school violence》2013,12(2-3):109-130
Abstract

This article explores psychometric characteristics of the Youth Risk Behavior Surveillance Survey (YRBS), one of the most widely used instruments to assess the prevalence of violent and other high-risk behaviors in secondary school settings. Response patterns were analyzed for a subset of 414 youths who indicated that they had carried a weapon to school six or more times during the preceding 30 days, and were compared to a matched sample of youths randomly selected from the 13,610 participants in the 2001 national administration of the YRBS. Results indicated that extreme responders to the weapon-carrying item were considerably more likely than their counterparts to respond in an extreme fashion to all YRBS items, including risk items pertaining to school (e.g., physical fights on school property) and outside school (e.g., alcohol consumption) factors, as well as positive health behaviors (e.g., healthy eating habits). Overall, the results suggest an ex-treme response bias among some participants that may impact the validity of the YRBS instrument. More specifically, presence of this response bias may inflate estimates of the prevalence of school violence and related concerns. These findings are discussed in light of the need to carefully examine individual response patterns on future administrations of the YRBS in an effort to ensure maximum instrument utility.  相似文献   
94.
Four new impurities have recently been detected in the gas chromatographic signature profiles of many illicit cocaine hydrochloride exhibits. These impurities are only seen in exhibits that have been oxidized and are most prominent in samples that have been highly oxidized. Exhibits containing these compounds were subjected to gas and liquid chromatographic-mass spectrometric analyses to determine the identity of the impurities. These impurities were subsequently synthesized to verify their structures. Four diastereomeric diols formed from the oxidation of cis- and trans-cinnamoylcocaine were characterized by nuclear magnetic resonance spectrometry, mass spectrometry, and synthesis. Oxidation of cis-cinnamoylcocaine in neutral conditions yielded (2R,3R)-dihydroxy-3-phenylpropionylecgonine methyl ester and (2S,3S)-dihydroxy-3-phenylpropionylecgonine methyl ester, while trans-cinnamoylcocaine produced (2R,3S)-dihydroxy-3-phenylpropionylecgonine methyl ester and (2S,3R)-dihydroxy-3-phenylpropionylecgonine methyl ester. The recent appearance of these new impurities suggests that some illicit cocaine processors have modified their oxidation procedures of crude cocaine base for transformation into illicit refined cocaine hydrochloride.  相似文献   
95.
Research Summary
The criminal use of firearms presents a unique challenge to policymakers and is the subject of scientific study in fields such as criminology, public health, sociology, and law. Previous research has described firearm use by terrorists in the United States as uniformly common; however, little systematic attention has been focused on this phenomenon. Although valuable, progress in this area has been hampered by the absence of reliable quantitative information. Using data from the American Terrorism Study and the U.S. Sentencing Commission, we examine the firearm-offending characteristics of 923 federal felons and 336 terrorists.
Policy Implications
Findings indicate that many systematic differences exist between terrorists and other types of federal felons and that terrorists are more likely than other felons to be convicted of firearm-related crimes. We recommend that official efforts to monitor weapons sales—such as the Brady Act—continue to include those named on the terrorist watch list and that those named on the list be subject to additional law-enforcement scrutiny when attempting to purchase firearms. These efforts should be coordinated by federal law-enforcement agencies to facilitate the effective use of existing antiterrorism mechanisms in both blocking purchases and garnering intelligence on terrorists attempting to obtain firearms.  相似文献   
96.
The article examines whether state officials may shoot down a hijacked airplane which carries uninvolved passengers, if it is known that the plane will be used against the lives of other human beings. In its first sections, it explains the German Federal Constitutional Court’s verdict against such a permission, and it scrutinizes the crucial arguments in this ruling (restrictions on the use of military weapons; human dignity arguments). The author then extends the discussion beyond the path taken by the court. She examines the defensive claims of passengers aboard the plane and the protective claims of potential victims who are present at the hijackers’ target zone. In contrast to the German Federal Constitutional Court, she concludes that state officials must take the claims of both groups of potential victims equally serious, and that such conditions allow applying a consequentialist calculus (“save the greater number”) because it is the only way out of a genuine dilemma.  相似文献   
97.
Successful identification of skeletonized remains often relies upon DNA analyses, frequently focusing on the mid‐diaphysis of weight‐bearing long bones. This study explored intra‐bone DNA variability using bovine and porcine femora, along with calcanei and tali. DNA from fresh and short‐term environmentally exposed bone was extracted utilizing demineralization and standard lysis buffer protocols, and DNA quantity and quality were measured. Overall, femoral epiphyses, metaphyses, and the tarsals had more nuclear and mitochondrial DNA than did the femoral diaphyses. DNA loss was much more rapid in buried bones than in surface exposed bones, while DNA quality differed based on environment, but not bone region/element. The demineralization protocol generated more DNA in some bone regions, while the standard lysis was more effective in others, and neither significantly affected DNA quality. Taken together, these findings reinforce the importance of considering inter‐ and intra‐bone heterogeneity when sampling skeletal material for forensic DNA‐based identifications.  相似文献   
98.
This paper explores the incorporation of eugenic objectives within family focused and psychologically based public health initiatives throughout the 1940s–1970s. By focusing on three of Australia’s enduring public health initiatives – family planning, marriage guidance and sex education – I consider how post-war eugenic rhetoric in Australia was initially dominated by educational services which centred on creating a conducive environment for eugenically aligned reproductive choices within the nuclear family structure. The fact the term ‘eugenics’ was increasingly omitted from what remained eugenically aligned public health activities will also be considered.  相似文献   
99.
目的利用气相色谱-质谱法(GC-MS)、液相色谱-四级杆-飞行时间质谱(LC-Q-TOF/MS)和核磁共振光谱法(NMR)研究合成大麻素5F-UR-144遇热分解的具体变化情况。方法对照品用无水乙醇定容稀释后,经GC-MS和LC-Q-TOF/MS检测得到对应的色谱图和质谱图;对照品分别于常温和280℃密封加热后用无水乙醇定容稀释,经LC-Q-TOF/MS和NMR检测得到对应的质谱图、1H和13C核磁共振波谱;对照品分别于常温逐步提升至300℃密封加热后用无水乙醇定容稀释,经LC-Q-TOF/MS检测得到对应的色谱图。结果5F-UR-144在高温下会开环产生新的物质;5F-UR-144从130℃开始分解,随着温度升高分解程度提升,240℃时分解率达到98%;随着温度继续升高,超过260℃,分解产物会碳化。结论基于5F-UR-144的热不稳定性,在检测时应考虑若通过烫食方式吸食5F-UR-144,其进入人体的成分会发生变化;气相色谱或气相色谱-质谱法不适合定量检测5F-UR-144。  相似文献   
100.
Abstract: Our objective is to document the recovery of DNA from the spinal cord or surrounding dura mater in 11 cases of severely burned human remains. Radiographs established that portions of charred tissue contained spine segments. Multidetector computed tomography (MDCT) revealed that each spine specimen contained an intact spinal cord remnant. A full DNA profile was obtained from seven specimens using spinal cord dura mater in six specimens and spinal cord medulla in one specimen. A partial profile was obtained from four specimens (spinal cord dura mater, 2; spinal cord medulla, 2). Bone and muscle surrounding the spinal cord appear to insulate nucleic acid containing tissue from critical thermal degradation. The spinal cord, which is easily identified by MDCT examination of remains and easily recovered at the postmortem examination, can be a source of DNA with extraction yields comparable with other tissue sources. Specimens of dura mater are preferable as processing time is faster than bone.  相似文献   
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