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121.
News frames are patterns of news construction journalists rely on to present information to their audiences. While much of the research on news frames has focused on their identification and effects, less work has investigated the specific contributions these different frames make to democratic life. Value judgments about distinct news frames are often not generated in a systematic fashion, not grounded in democratic theory, and/or not supported by empirical evidence. In this article, we address these problems by arguing for and extending normative assessment as a standard operating procedure to determine the democratic value of political communication phenomena. We demonstrate the usefulness of normative assessment by showing how two important generic news frames (politics as a strategic game and as a substantive contestation) contribute to a deliberative public discourse prior to a general election. Using data on television news coverage of the German federal election campaign in 2009, we investigate how these frames are related to the inclusiveness and civility of public discourse and the extent to which it features exchanges of substantive reasons for political positions. Results show that mediated democratic deliberation suffers consistently from strategic game framing, while contestation frames make ambivalent contributions. Implications for political communication scholarship as well as journalistic practice are discussed.

[Supplementary material is available for this article. Go to the publisher's online edition of Political Communication for the following free supplemental resource(s): coding protocol used in content analysis.]  相似文献   
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Who should be considered the author of a work protected by copyright?In recent years, there has been an expanding critical literatureexamining notions of authorship and the role of the author inthe creative process, often leading to suggestions for waysin which the copyright framework might be recalibrated to recognizecollective effort. This book by Lior Zemer is an excellent additionto those works. Eloquently written and skilfully referenced in the eight chaptersthat make up Zemer's book, its key aim is to persuade the readerthat the individual and the public should be seen as joint authorsof creative works. In making his arguments, he takes us froma Conceptual Challenge (Chapter 2) to a  相似文献   
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Objectives

Place-based policing experiments have led to encouraging findings regarding the ability of the police to prevent crime, but sample sizes in many of the key studies in this area are small. Farrington and colleagues argue that experiments with fewer than 50 cases per group are not likely to achieve realistic pre-test balance and have excluded such studies from their influential systematic reviews of experimental research. A related criticism of such studies is that their statistical power under traditional assumptions is also likely to be low. In this paper, we show that block randomization can overcome these design limitations.

Methods

Using data from the Jersey City Drug Market Analysis Experiment (N = 28 per group) we conduct simulations on three key outcome measures. Simulations of simple randomization with 28 and 50 cases per group are compared to simulations of block randomization with 28 cases. We illustrate the statistical modeling benefits of the block randomization approach through examination of sums of squares in GLM models and by estimating minimum detectable effects in a power analysis.

Results

The block randomization simulation is found to produce many fewer significantly unbalanced samples than the naïve randomization approaches both with 28 and 50 cases per group. Block randomization also produced similar or smaller absolute mean differences across the simulations. Illustrations using sums of squares show that error variance in the block randomization model is reduced for each of the three outcomes. Power estimates are comparable or higher using block randomization with 28 cases per group as opposed to naïve randomization with 50 cases per group.

Conclusions

Block randomization provides a solution to the small N problem in place-based experiments that addresses concerns about both equivalence and statistical power. The authors also argue that a 50 case rule should not be applied to block randomized place-based trials for inclusion in key reviews.  相似文献   
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The International Society for Forensic Genetics (ISFG) has established a Paternity Testing Commission (PTC) with the purpose of formulating international recommendations concerning genetic investigations in paternity testing. The PTC recommends that paternity testing be performed in accordance with the ISO 17025 standards. The ISO 17025 standards are general standards for testing laboratories and the PTC offers explanations and recommendations concerning selected areas of special importance to paternity testing.  相似文献   
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ABSTRACT

Auvergne Doherty was the first woman from the Commonwealth to be admitted and called to the Bar of England and Wales.?In the first part of this article, Doherty's family background, education, legal training, and post-Bar experiences are set out. The second part analyses her profile compared with the other women called to the Bar in 1922 and considers why Doherty may not have gone on to practise as a barrister. This article argues that Doherty’s biography is important because it evidences how vital it was to have the necessary financial means and networks to be able to forget a career at the Bar. It was precisely the lack of these factors that impeded Doherty to fulfil her career as a barrister.  相似文献   
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This paper examines the effect of instrumental and expressive concerns on public confidence in the police in three different residential areas in Sekondi-Takoradi, Ghana’s third largest city. The study was important because of the knowledge vacuum that existed in regard to the empirical validity of the instrumental and expressive theoretical framework within the Ghanaian context. Data for the study was drawn from a baseline survey conducted in three residential areas in the Sekondi-Takoradi metropolis. The findings revealed that instrumental factors played a more significant role in influencing confidence in the police in the Sekondi-Takoradi metropolis compared to expressive factors. More importantly, instrumental factors played a more significant role in influencing confidence in the police at Anaji compared to the other two residential areas used in the study. The paper recommends that there should be more investment in police infrastructure and services to enhance police effectiveness and efficiency. Additionally, the authors also suggest that interventions aimed at improving security at the community level should be guided by periodic safety audits since this will provide a better understanding of the criminogenic problems within these residential settlements.  相似文献   
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