Bayesian hierarchical regression models for detecting QTLs in plant experiments

Quantitative trait loci (QTL) mapping is a growing field in statistical genetics. In plants, QTL detection experiments often feature replicates or clones within a specific genetic line. In this work, a Bayesian hierarchical regression model is applied to simulated QTL data and to a dataset from the Arabidopsis thaliana plants for locating the QTL mapping associated with cotyledon opening. A conditional model search strategy based on Bayesian model averaging is utilized to reduce the computational burden.     

International public relations as a predictor of prominence of US news coverage

This study aims to test the public relations efforts of other countries as a predictor of their newsworthiness in the US news media, after controlling for national traits and social significance. Based on a content analysis of US newspaper and television news coverage (New York Times, Washington Post, ABC, NBC, CBS, and CNN) of 97 countries, this study found that the public relations of other countries’ governments is a significant predictor of these countries’ prominence in the US news coverage.     

日语的声调 语调以及逻辑语调

文章重点论述了在学习日语过程中,常遇到的声调(アクセント)、语调(イントネ一ション)以及逻辑语调(プロミネンス)三者在句中发音的区别和各自的特点.列举了典型单词及句子,通过声调的高低强弱变化、语调的起伏变化,来表现日语语言的特点.更能使学习者加深理解,以便熟练地运用在日常生活中.     

精确新闻:新闻实务对量化研究方法的借鉴与拓展

精确新闻积极借鉴并尝试运用量化研究等社会科学研究方法,对数据加以全方位的综合应用,从而不断增强人们认识事物的科学性与准确度。精确新闻报道应特别重视社会科学的规范与方法,最大限度减小新闻报道的可能偏差,并尽量做到价值中立。精确新闻要理清新闻报道数据的来龙去脉,精心筛选具有新闻价值的数据,善于挖掘数据背后深藏的含义,运用多种技巧使数据更具可读性,从而彰显精确新闻报道更大的传播价值。     

Diesel Engine Exhaust and Lung Cancer Mortality: Time‐Related Factors in Exposure and Risk

To develop a quantitative exposure‐response relationship between concentrations and durations of inhaled diesel engine exhaust (DEE) and increases in lung cancer risks, we examined the role of temporal factors in modifying the estimated effects of exposure to DEE on lung cancer mortality and characterized risk by mine type in the Diesel Exhaust in Miners Study (DEMS) cohort, which followed 12,315 workers through December 1997. We analyzed the data using parametric functions based on concepts of multistage carcinogenesis to directly estimate the hazard functions associated with estimated exposure to a surrogate marker of DEE, respirable elemental carbon (REC). The REC‐associated risk of lung cancer mortality in DEMS is driven by increased risk in only one of four mine types (limestone), with statistically significant heterogeneity by mine type and no significant exposure‐response relationship after removal of the limestone mine workers. Temporal factors, such as duration of exposure, play an important role in determining the risk of lung cancer mortality following exposure to REC, and the relative risk declines after exposure to REC stops. There is evidence of effect modification of risk by attained age. The modifying impact of temporal factors and effect modification by age should be addressed in any quantitative risk assessment (QRA) of DEE. Until there is a better understanding of why the risk appears to be confined to a single mine type, data from DEMS cannot reliably be used for QRA.     

Johnson's Differentiation Theory: Is It Really Empirically Supported?

Michael Johnson's differentiation of “types” of domestic violence has had a significant impact on courts and providers, in part because of its claim to an empirical basis. Unfortunately, the label “situational couple violence” has already been used by judges and evaluators to minimize abuse claims in custody cases. Johnson's repeated assertion that SCV is the most common form of domestic violence reinforces the marginalizing of domestic violence. But what do his data actually show? Here Professor Meier takes a close look at the research Johnson relies on and finds that it fails to prove his thesis. Rather, the data suggest that Johnson has it exactly backward: Control-based abuse is probably far more common than “situational” domestic violence.     

花生荚果性状的定量化分析与标准评估

通过对21个花生品种的荚果外观性状进行定量化分析,评估的结果表明,多数品种的荚果饱满度和饱果率不足70%,出口大花生品种的双仁饱果率不足50%;出口大花生品种和推广多年的高产品种整齐度差(CV>25%)。因此,在花生品种评审和推广中,荚果饱满度、饱果率和出米率应高于70%,双仁饱果率应高于50%。     

生态文明理念下宁夏低碳经济发展定量研究

我国承诺到2020年单位GDP二氧化碳排放比2005年下降40％-45％,这一减排目标最终会分摊到各个省区,由于各省区的发展条件不向,碳排放模式和减排政策也有很大的差异性.在前人相关研究的基础上,根据中国国情将Kaya恒等式作适当的修正与扩展,引入城镇化和森林覆盖率因素,通过LMDI分解方法,对宁夏碳排放的影响因素作定量分析.影响宁夏碳排放的三个主要因素依次是单位能源消费的碳排放量、城镇化水平和能源强度.根据宁夏经济社会发展的阶段性特征与区情,提出发展低碳经济的若干建议.     

20世纪柳永词传播的定量分析

词选是词的主要传播媒介,20世纪词选的数量和种类与前代相比达到最大值,其对柳永词的著录篇数与著录名次亦创历史新高。这种传播盛况充分表明此期柳永词在读者心目中的重要地位和深远影响。俚俗词进入柳永“名词”排行榜与“名词”的分散、扩展趋势则表明此期词学观念、词学趣尚的深刻变化与多元化发展态势。     

A frequentist assessment of Bayesian inclusion probabilities for screening predictors

Bayesian inclusion probabilities have become a popular tool for variable assessment. From a frequentist perspective, it is often difficult to evaluate these probabilities as typically no Type I error rates are considered, neither are any explorations of power of the methods given. This paper considers how a frequentist may evaluate Bayesian inclusion probabilities for screening predictors. This evaluation looks at both unrestricted and restricted model spaces and develops a framework which a frequentist can utilize inclusion probabilities that preserve Type I error rates. Furthermore, this framework is applied to an analysis of the Arabidopsis thaliana with respect to determining quantitative trait loci associated with cotelydon opening angle.