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121.
Review Essay     
Abstract

So far in modern world history, social revolutions, though they have entailed elements of class conflict, have plainly not conformed to Marx's theoretical expectations or moral vision. They have occurred in agrarian countries caught behind foreign competitors, not in the most advanced capitalist industrial nations. And even those revolutions that have expropriated domestic capitalist classes in the name of socialist ideals have hardly resulted to date in the prosperous, democratic communist societies envisaged by Marx. (Skocpol, p. 292)  相似文献   
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123.
Photoanthropometry is a metric based facial image comparison technique. Measurements of the face are taken from an image using predetermined facial landmarks. Measurements are then converted to proportionality indices (PIs) and compared to PIs from another facial image. Photoanthropometry has been presented as a facial image comparison technique in UK courts for over 15 years. It is generally accepted that extrinsic factors (e.g. orientation of the head, camera angle and distance from the camera) can cause discrepancies in anthropometric measurements of the face from photographs. However there has been limited empirical research into quantifying the influence of such variables. The aim of this study was to determine the reliability of photoanthropometric measurements between different images of the same individual taken with different angulations of the camera. The study examined the facial measurements of 25 individuals from high resolution photographs, taken at different horizontal and vertical camera angles in a controlled environment. Results show that the degree of variability in facial measurements of the same individual due to variations in camera angle can be as great as the variability of facial measurements between different individuals. Results suggest that photoanthropometric facial comparison, as it is currently practiced, is unsuitable for elimination purposes. Preliminary investigations into the effects of distance from camera and image resolution in poor quality images suggest that such images are not an accurate representation of an individuals face, however further work is required.  相似文献   
124.
As strategies for campaign political advertising become more complex, there remains much to learn about how ad characteristics shape voter reactions to political messages. Drawing from existing literature on source credibility, we expect ad sponsorship will have meaningful effects on voter reactions to political advertisements. We test this by using an original experiment, where we expose a sample of student and non-student participants to equivalent ads and vary only the paid sponsor disclaimer at the end of the message. The only thing that differs across stimuli is whether a political candidate, a known interest group, or an unknown interest group sponsors the advertisement. Following exposure to one of these ads, participants complete a posttest battery of questions measuring the persuasiveness of the message, source credibility, and message legitimacy. We find that ads sponsored by unknown interest groups are more persuasive than those sponsored by candidates or known interest groups, and persuasion is mediated by perceived credibility of the source. We conclude by discussing our findings and their implications for our understanding of contemporary campaigns.  相似文献   
125.
Infrared spectroscopy has been used to examine changes to bone chemistry as a result of soil burial. Pig carcasses were buried as part of a controlled field study, and pig bone was used in soil environments established in the laboratory. The variables of species type, bone pretreatment, soil type and pH, moisture content, temperature, and burial time were investigated. The crystallinity index (CI) and the organic and carbonate contents of the bones were monitored. The data revealed decreasing trends in the organic and carbonate contents and an increase in the CI of the bone with burial time. An acidic soil environment and soil type are the factors that have the most influence on bone chemistry as a result of burial. The study demonstrates the potential of infrared spectroscopy as a straightforward method of monitoring the changes associated with aging of bones in a variety of soil environments.  相似文献   
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Why did East German leader Walter Ulbricht outlast other Stalin‐era Soviet allies in Central and Eastern Europe? This article considers this question, comparing Ulbricht's situation with that of the Hungarian communist leadership in 1956. The article examines different aspects of the question, from relations with the Soviet Union to the archival evidence for popular opinion in East Germany in the crisis year of 1956. It concludes that Ulbricht's relative longevity in power was due to a combination of factors, from the exposed position of the German Democratic Republic in the Cold War, and the support this elicited from the Soviet Union, to the legacy of the unsuccessful workers' uprising of 1956 and the weakness of Ulbricht's internal opposition.  相似文献   
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129.
In Bilski v. Doll, the U.S. Supreme Court is called to define one of the categories of patent-eligible subject matter, “process” patents. In 2008, the Court of Appeals for the Federal Circuit held that the category has a narrow meaning, and that to be eligible for a process patent under 35 U.S.C. § 101, the invention must involve a machine or apparatus or involve a transformation to a different state or thing, ultimately rejecting the patent application as unpatentable subject matter. The patent applicants have asked the U.S. Supreme Court to determine two issues: first, the meaning of “process” in 35 U.S.C. § 101 and whether the lower court properly relied on a “machine-or-transformation” test, and second, the test's potential conflict with 35 U.S.C. § 273, which provides protection for “method[s] of doing or conducting business.” The Court's decision could change the way that research and business are done, and patent protection for such investments. Parts 1 and 2 of this article address Bilski directly and what is and is not in dispute. Part 3 addresses the “machine-or-transformation” test, while Parts 4 and 5 address reasons not to adopt such a test.  相似文献   
130.
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