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141.
Gaohong Dong David C. Hoaglin Bo Huang Ying Cui Duolao Wang Yu Cheng Margaret Gamalo-Siebers 《Pharmaceutical statistics》2023,22(4):748-756
The win odds and the net benefit are related directly to each other and indirectly, through ties, to the win ratio. These three win statistics test the same null hypothesis of equal win probabilities between two groups. They provide similar p-values and powers, because the Z-values of their statistical tests are approximately equal. Thus, they can complement one another to show the strength of a treatment effect. In this article, we show that the estimated variances of the win statistics are also directly related regardless of ties or indirectly related through ties. Since its introduction in 2018, the stratified win ratio has been applied in designs and analyses of clinical trials, including Phase III and Phase IV studies. This article generalizes the stratified method to the win odds and the net benefit. As a result, the relations of the three win statistics and the approximate equivalence of their statistical tests also hold for the stratified win statistics. 相似文献
142.
使用50ETF期权的高频数据,研究“净购买压力”指标对指数方向性和波动性变化的预测能力,并比较不同加总方法、看涨看跌、不同在值程度的期权以及非对称的“净购买压力”指标隐含信息的差异性.本文发现,50ETF期权“净购买压力”指标隐含着标的指数方向性和波动性的变化信息.在预测指数变化方向时,Delta加总的“净购买压力”隐含的信息已包含在简单加总的指标之中,看涨、看跌期权以及不同在值程度的期权在信息含量上存在差异性.在预测指数波动性时,使用简单加总和使用Gamma、Vega加总的“净购买压力”指标均隐含着未来市场的波动率信息,平值和虚值期权的“净购买压力”指标对波动率具有更强的预测能力.同时,“净购买压力”的隐含信息存在非对称特征. 相似文献
143.
近几年我国农民收入增长困难存在着制约性因素,本文针对存在问题提出了“十一五”期间促进农民增收的对策建议,以实现我国农村经济以及整个国民经济的快速发展。 相似文献
144.
Edwin L. Crow 《统计学通讯:模拟与计算》2013,42(3):749-769
The ranking of paired contestants (players) after a series of contests is difficult when every player does not play every other player. In the 1975 JASA Mark Thompson presented a maximum likelihood solution based on the assumption that the probability of any one player defeating any other is a function only of the difference in their ranks. Here the linear approximation to that likelihood is shown to lead to a nonparametric measure of the efficacy of the ranking, called the net difference in ranks (NDR) , which is the sum of the differences in ranks of the paired players in the observed contests that agree with the ranking minus the sum of the differences in ranks in the observed contests that disagree with the ranking (upsets) . The subject is part of a large literature that has been consolidated by H.A. David in The Method of Paired Comparisons (1963, 1988). The method was introduced by the psychophysicist Fechner in 1860 and has been widely applied to sensory testing, 相似文献
145.
This essay combines Burke's burlesque frame and Jamieson's double binds to create a hybrid gendered theory for rhetorically analyzing the aggressive sexualization of 2008 United States vice presidential candidate Sarah Palin. The essay develops our theory titled the “burlesque binds” and explicates a specific form of a burlesque bind: the “MILF frame.” Palin's aggressively sexualized representation was united under the crass acronym MILF, which stands for “Mom I'd Like to Fuck.” The MILF frame emphasized Palin's feminine qualities, positioning her as a “trophy vice” with no political acumen, and highlighted her masculine behaviors, but deflated them through sexual objectification. The unification of the binds and burlesque theories reveals how Palin's role as a social actor was not simply circumscribed but shut down: she was deemed unfit by both masculine and feminine standards, by both public and private sphere conventions. Although Sarah Palin has arguably been the most prevalent subject of the political MILF frame, our essay catalogues other instances of female political leaders experiencing this type of symbolic degradation, suggesting the MILF frame's vast influence. 相似文献
146.
ABSTRACTAnnual net cash returns and net capital gains provide farmers with their actual and potential monetary rewards, respectively. This article reports on a national farm survey showing both actual and potential returns, on average, are not as high as might be imagined. This is supported by the findings of earlier studies and has implications for rural societies and their associated economies. Data on income, expenses and profit is presented as is data on farm value changes over the life of each farm. The information is adjusted for inflation to provide ‘real’ data. The profit and net capital gain figures are divided into groupings based on a range of criteria such as total farm capital, and labour compliment as a reflection of farm size. Statistically significant differences occur for some groupings such as farm type and farm size. 相似文献
147.
《Chinese Journal of Communication》2013,6(2):174-190
This case study examines the memoirs of American correspondents who were “embedded” within official delegations during the course of the US–China rapprochement in the early and mid-1970s. We seek to analyze how short-term visiting journalists arrived at their romanticized portrayals of Maoist China – when it was going through the chaos of the Cultural Revolution – and how the embedding journalistic practice served to facilitate foreign policy ventures orchestrated by both governments. We conclude that this romantic wave of media portrayal was entwined with journalistic preconceptions and a high level of dependency upon local fixers. Furthermore, we use discourse analysis to identify three “ideological packages” in their interpretation of the “new China” and its Cultural Revolution: material progress through self-reliance; a sense of purpose and morality; and equality. 相似文献
148.
Pauline Ketelaars 《Sociological Forum》2017,32(3):480-500
Within the social movement literature, it is mostly assumed that the reasons why people join a protest demonstration are in line with the collective action frames of the organizations staging the protest. Some recent studies suggest, however, that protesters’ motives are only partly aligned with the messages that are broadcasted by social movements. This study argues that activists’ motives are for an important part shaped by mass media coverage on the protest issue. It investigates the link between people's reasons to protest, the campaign messages of the protest organizers, and newspaper coverage prior to the demonstration. Data cover 14 anti‐austerity demonstrations in Belgium, the Netherlands, and the United Kingdom. Results show that social movements depend a lot on other political actors to gain media visibility for their messages. Furthermore, the relationship between social movement frames and protest participant motives is mediated by newspaper coverage. Protest organizers’ are able to reach demonstrators via their own communication channels to some extent, but for many of their messages, they also rely on journalists’ reporting about the protest issue. 相似文献
149.
Niccolo Bertuzzi 《Social movement studies》2017,16(6):752-756
In 2015 Milan hosted the Universal Exposition with the theme ‘Feeding the Planet, Energy for Life’. Even if characterized by various scandals and problems, the edition was narrated by the mainstream media as a political and economic success. Critical voices were almost completely obscured by favorable propaganda and the ideas of development and the future proposed by the Expo rhetoric was presented as inevitable, configuring ‘the best of all possible worlds’ in a more general post-political frame. In this profile I first present the main characteristics of the No Expo Network, e.g. the actors that composed it and the main critiques that they advanced. I will then focus on the reasons for its defeat, which is then contextualized in relation to the election of the Chief Executive Officer of Expo 2015 as new Mayor of Milan. Here, we can see the continuation and structural strengthening of the neoliberal politics of Expo2015 beyond the mega event itself. 相似文献
150.
《Marriage & Family Review》2013,49(3-4):275-295
In this multiply-authored account, five academicians discuss the connections between their work as clinicians and their clinical qualitative research. Each saw connections between practice and research, and each in her or his own domain of interest has found that practice informs research and research informs practice. This article also introduces three major types of qualitative clinical family research: conversational analysis, recursive frame analysis, and hermeneutic phenomenology. 相似文献