基于双边减排成本信息不对称的排污权二级交易市场拍卖机制研究

本文构建了一个基于双边减排成本信息不对称的排污权二级交易市场拍卖模型，分析了统一价格、歧视价格及混合拍卖机制下卖方收益、排污权价格波动及排污权供给量差异，在此基础上给出了排污权二级交易市场最优拍卖机制，并进一步讨论了相关参数对最优拍卖机制的影响。结果表明：从收益最大化角度来看，最优的拍卖机制为歧视价格拍卖机制，但考虑到价格波动及排污权供给量等其他因素，排污权二级市场交易应选用混合拍卖机制。风险偏好变化对混合拍卖机制下卖方收益及价格波动的影响存在不确定性，当风险偏好超过某一阈值时，随着风险偏好程度增大，需求隐蔽效应占主导，收益及价格波动增大；相反，当风险偏好小于某一阈值时，随着风险偏好程度增大，竞争效应占主导，收益及价格波动减小。价格变动的供给影响系数对卖方收益的影响随买方参与人数的不同而不同。当买方参与人数较小时，需求隐蔽效应占主导，竞争效应不明显，随着价格变动的供给影响系数增大，混合拍卖机制下卖方的收益不断增加；当买方参与人数较大时，卖方收益同时受到需求隐蔽和竞争效应影响，随着价格变动的供给影响系数增大，收益呈先增大后减小趋势。随着价格变动的供给影响系数增大，价格波动呈先增大后减小趋势。     

美､德个人信息宪法保护路径比较及启示——以个人信息的双重属性切入

个人信息的保护研究一般基于信息的人身性与财产性为选择保护的路径,却忽略了个人信息的人身依附属性.根据自由主义与社群主义对自我的解释得出个人信息具有个体性与公共性的双重属性.基于此双重属性导致美、德两国在个人信息保护模式上有所区别:美国将个人信息作为隐私权保护外延,显示其对信息个体性的追求;德国利用领域理论将个人信息作为人格尊严的保护客体,显示其对信息公共性的偏向.从法律文化视角比较,两国存在价值取向与隐私认可程度的差异,由此造成对个体性和公共性的不同偏向;两国又因司法谦抑主义与公共安全和个人信息保护的竞争,导致保护限缩的共同趋向.两种保护路径反映不同的法律文化的同时,也体现出两国都重视在立法基础上的宪法审查运用,以此平衡个人信息的个体性与公共性.故我国个人信息保护亦需以“审查”作为个人信息保护的有效方式,并以个体性与公共性的动态平衡作为判断标准.具体审查可以从程序上的公正平衡与实体上的合理平衡两方面进行判断,以此为个人信息提供有效保护.此外,打破个体性与公共性平衡状态的唯一变量只能基于公共利益的考量.     

Feminism and science in Masters of Sex

This article examines the fictional characterization of the real-life sex researchers and scientists William H. Masters and Virginia E. Johnson in the Showtime television program Masters of Sex (2013–2016). The historical Johnson had a complicated relationship with second-wave feminism: she disdained the movement and was interested primarily in improving heterosexual marriages and the sex lives of married couples. The Johnson character speaks in a language of postfeminism with minimal interest in collective action and broader social change. However, second-wave feminists later used her and Masters’ research in order to support their own beliefs about sexual autonomy and freedom, within and beyond marriage and heterosexuality. The television program demonstrates Johnson’s importance to both phases of her and Masters’ research—in the first phase, when they are based in a hospital and university environment, and in the second, when they establish their own research institute and raise funds directly from the clients that they serve. Johnson exemplifies postfeminist depictions of ambitious women in prestige television, her aim to have a successful career and marriage conflict, and while she is willing to compromise scientific values to serve her own goals, her male colleagues temper that ambition in service of “objective” science.     

A population sample registry for public health survey investigations: methods,lessons, and successes

Public health relies on sample surveys to monitor the health of populations and investigate factors that contribute to population health and illness. Such investigations require surveying individuals who are selected in ways that support statistical inference to the population. Faced with rising costs and declining participation, survey researchers are exploring economical ways to recruit samples that validly represent larger populations. The current report describes an innovative resource, the Colorado Adult Population Sample–Survey Research Registry, which maintains survey access to respondents from a probability-based state health survey. We describe recruitment and retention strategies, explore representativeness, report several studies that used the registry, and discuss future directions.     

Discrimination,mental health,and body image among transgender and gender-non-binary individuals: Constructing a multiple mediational path model

The purpose of the current study was to examine the relationships among discrimination, mental health, and body image in a national sample of transgender adults. Participants (N = 78) identified as transgender, genderqueer, or other gender-non-binary identities and were recruited via a national online survey. Harassment/rejection, work/school, and other discrimination explained 10.4% of the variance in body appreciation, while satisfaction with life, anxiety, self-esteem, and depression explained 60.7%. Within these models, harassment/rejection was inversely associated with body appreciation, while self-esteem and satisfaction with life were positively associated. A series of path models moving from a measurement model to a more parsimonious and excellent-fitting model found that the effect of harassment/rejection on body appreciation was fully mediated by self-esteem and satisfaction with life, resulting in a multiple mediation.     

Social service purchasing in China: Rationale,features, and risks

As part of a broader program of market reform, China's local governments are progressing an agenda of purchasing child welfare and other social services from the nongovernment sector, primarily to expand capacity and address vast unmet need. This paper draws on current research evidence to explore the approaches to purchasing emerging in China, examining the rationale for purchasing and models of supply, competition, and regulation. While some approaches are modeled on direct service contracting, direct purchasing of social service “posts” is also used, aimed at achieving goals of professionalization alongside service expansion. Overall, the review shows purchasing is helping to rapidly expand service scale and capacity; however, regulatory strategies for managing and mitigating risks to quality and access appear lacking. This highlights the need for further scholarship aimed at developing the robust risk management strategies which are required to support high quality, sustainable provision of purchased services.     

Using the Theory of Planned Behaviour to Understand Motivation to Register Births in Lombok,Indonesia

Despite government interest in promoting birth registration, more than a third of Indonesian children do not have a birth certificate, affecting the realisation of both their human and citizen rights. While barriers to registering children's births in Indonesia have been assessed, there is limited research on how communities perceive the importance of having a birth certificate. This study used focus group discussions to explore parental motivations around birth registration. The results of a thematic analysis found that perceived use of birth certificates, perceived control over the application process and social norms related to certificate ownership affect the intention to apply.     

Statistical Inference Enables Bad Science; Statistical Thinking Enables Good Science

ABSTRACT

Scientific research of all kinds should be guided by statistical thinking: in the design and conduct of the study, in the disciplined exploration and enlightened display of the data, and to avoid statistical pitfalls in the interpretation of the results. However, formal, probability-based statistical inference should play no role in most scientific research, which is inherently exploratory, requiring flexible methods of analysis that inherently risk overfitting. The nature of exploratory work is that data are used to help guide model choice, and under these circumstances, uncertainty cannot be precisely quantified, because of the inevitable model selection bias that results. To be valid, statistical inference should be restricted to situations where the study design and analysis plan are specified prior to data collection. Exploratory data analysis provides the flexibility needed for most other situations, including statistical methods that are regularized, robust, or nonparametric. Of course, no individual statistical analysis should be considered sufficient to establish scientific validity: research requires many sets of data along many lines of evidence, with a watchfulness for systematic error. Replicating and predicting findings in new data and new settings is a stronger way of validating claims than blessing results from an isolated study with statistical inferences.     

The covariance of the backward and forward recurrence times in a renewal process: the stationary case and asymptotics for the ordinary case

In a Poisson process, it is well-known that the forward and backward recurrence times at a given time point t are independent random variables. In a renewal process, although the joint distribution of these quantities is known (asymptotically), it seems that very few results regarding their covariance function exist. In the present paper, we study this covariance and, in particular, we state both necessary and sufficient conditions for it to be positive, zero or negative in terms of reliability classifications and the coefficient of variation of the underlying inter-renewal and the associated equilibrium distribution. Our results apply either for an ordinary renewal process in the steady state or for a stationary process.