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1.
The reasons for change in state elites' perceptions of the adversary are fiercely contested by realists, constructivistis and neo-liberals in the international relations literature. A series of events – beginning with the October 1973 war and culminating in the Oslo peace process – offers a unique opportunity to assess the value of these theories in explaining change in the perceptions of Israel and Zionism in Syria, Egypt and Jordan. This study is based on articles on Israel and Zionism that appeared in the official army journals of these three states. The analysis suggests that, since the 1973 war, Egypt has perceived Israel as a formidable foe that must be restrained, Syria continues to deny Israel's legitimacy, and Jordan's perceptions of Israel changed dramatically from demonization to recognition. The realist paradigm, which focuses on changes in the regional and international balance of power, does best in explaining variations in the portrayal of Israel amongst these actors. Nevertheless, none of the theories offers a complete, timeless explanation of the issue. The limitations of any single theory to account for change in the perceptions of the adversary suggest that caution should be used in attempting to capture the complexity of social and political life in any single overarching theory.  相似文献   
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Postmortem stability of DNA   总被引:11,自引:0,他引:11  
High-molecular-weight DNA was recovered postmortem in sufficient quantities from various human organ tissues as well as from blood, although not all organs were equally well suitable. Good DNA stability was found in brain cortex, lymph nodes and psoas muscle over a period of three weeks postmortem. Spleen and kidney showed good DNA stability up to five days postmortem but after longer periods, rapid degradation was observed. Yields of DNA from blood were not consistent because of the non homogeneity of samples. Blood clots were rich with DNA. Generally, the amount of degraded DNA correlated directly with the duration of the postmortem period. However in some cases, DNA degradation was already prominent after a short period. However in some cases, DNA degradation was already prominent after a short period. Case histories showed that high environmental temperature at the site of death and/or infectious diseases prior to death were the main factors for rapid autolysis. Gradual disappearance to complete loss of the long fragments (15-23 kb) was observed in DNA fingerprinting using the minisatellite probe 33.15. No extra-bands were noted, thus excluding erroneous conclusions. However, evidentiary value of older samples was lower.  相似文献   
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Explanations for national success in science and technology typically focus on domestic institutions and policies. However, that line of research has yet to identify any particular set of institutions or policies that explain variation in national innovation rates across cases or over time. This article offers new evidence that the problem with domestic institutions approaches stems from their failure to consider international security factors. Specifically, this article finds a positive effect for U.S. security alliances on innovation. This finding is robust across different specifications and periods of analysis. While countries that ally militarily with the United States are found to realize benefits in economy‐wide, indigenous innovation, such an effect is not observed in military technologies. This suggests that alliances may substitute for being on the frontier in military technologies. Therefore, this article contributes not just to debates over S&T competitiveness, but also to alliance formation.  相似文献   
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Michael Mann’s infrastructural power is a concept often applied but rarely rigorously conceptualized and precisely measured. Three distinct analytical lenses of infrastructural power can be derived from his definitions: infrastructural power as the capabilities of the central state, as the territorial reach of the state, and as the effects of the state on society. Exemplary texts applying each of these approaches are used to demonstrate their connection to Mann’s ideas, the relationships between these dimensions, and the boundaries between this and other aspects of the state’s strength. Moving from conceptualization to measurement, the paper shows the costs of common errors in the measurement of infrastructural power, and develops guidelines for its proper empirical application.  相似文献   
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Merton’s concept of “middle range theories” has been widely accepted as one of his most influential contributions to sociological terminology, even if there is no conclusive understanding of its semantic and methodological meaning. The article proposes to ignore the term. On the one hand, it cannot be logically clarified and, on the other, it restrains an appropriate judgement of the merits of Merton’s research programme.  相似文献   
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