WHO CAN SPEAK TO RACE AND NATION?

This article examines the production and publication of the Parekh Report (2000) by drawing upon two related current debates – the decline of the public intellectual and the necessity for a public sociology. It argues that both of these debates have failed to engage with concrete examples of public intellectual labour, with the complexities of public communication sociologically and have been reticent as to which particular intellectual voices are able to enter the public sphere. The article argues that the intellectually orientated, multiculturally constituted Future of Multi-Ethnic Britain Commission which authored the report and the report's moment of publication both offer sites in which these critiques can be developed. The article foregrounds the question as to who is entitled to inaugurate, participate in and shape public debates on race, nation, and national identity and evidences the difficulties of attempting to do so in a ‘race volatile’, anti-intellectual and heavily mediated political milieu.     

Revisiting followership through a social identity perspective: The role of collective follower emotion and action

We review the concept of followership, with a specific focus on how followers actively influence leadership outcomes. We examine in particular research from four key areas: social identity perspectives on leadership, intergroup emotion theory, collective action, and reciprocal affect within leader–follower interactions. Our central proposition is that followers engage in actions, driven by both cognitive and affective-based processes, which affect leadership outcomes. Moreover, because leaders are part of the groups they lead and therefore embedded within the social context of a group, we propose that any action that affirms or threatens the salient group will trigger both cognitive and emotional responses from followers towards leaders. These include the extent to which a leader engages in actions that are perceived as (1) self-sacrificial, (2) procedurally fair, and (3) expressing emotions congruent with that of their group. We also propose that the extent to which followers translate their perceptions and emotions towards collective action towards their leaders will be moderated by individual-level group identification and group-level shared identity. To conclude, we highlight theoretical implications in light of these propositions and suggest areas for further research on followership.     

针对影像处理的快速二维离散余弦转换算法(英文)

由于离散余弦转换在影像处理领域之重要性与日俱增,且消耗许多处理器运算时间,所以众多快速二维离散余弦转换算法不断被发表。该文提出一个应用于JPEG及MPEG图像处理的快速二维8×8离散余弦转换算法,该算法主要运用基本的累加及移位运算,快速评估8×8影像区块的复杂程度,可调整离散余弦转换参数的计算数量。该算法只需花费少量硬件成本,如比较器、加法器、移位器,便可有效降低离散余弦转换运算时间,且在模拟结果显示所提出的算法与传统及整数离散余弦转换相比,可达到较快的运算速度,且在量化系数较大的情况下,可得到更好效果。     

西方环境伦理学对非西方国家的作用

文章追溯了西方环境伦理学在西方近代自然诗、风景画、景观园林和博物学中的起源,指出西方环境伦理学对于非西方国家的借鉴作用,但非西方国家不必照搬西方环境伦理学中那些有争议的概念,而必须从自己的传统研究环境伦理学。     

An Integrated Approach for Assessing the Impact of Large-Scale Future Floods on a Highway Transport System

The negative impact of climate change continues to escalate flood risk. Floods directly and indirectly damage highway systems and disturb the socioeconomic order. In this study, we propose an integrated approach to quantitatively assess how floods impact the functioning of a highway system. The approach has three parts: (1) a multi-agent simulation model to represent traffic, heterogeneous user demand, and route choice in a highway network; (2) a flood simulator using future runoff scenarios generated from five global climate models, three representative concentration pathways (RCPs), and the CaMa-Flood model; and (3) an impact analyzer, which superimposes the simulated floods on the highway traffic simulation system, and quantifies the flood impact on a highway system based on car following model. This approach is illustrated with a case study of the Chinese highway network. The results show that (i) for different global climate models, the associated flood damage to a highway system is not linearly correlated with the forcing levels of RCPs, or with future years; (ii) floods in different years have variable impacts on regional connectivity; and (iii) extreme flood impacts can cause huge damages in highway networks; that is, in 2030, the estimated 84.5% of routes between provinces cannot be completed when the highway system is disturbed by a future major flood. These results have critical implications for transport sector policies and can be used to guide highway design and infrastructure protection. The approach can be extended to analyze other networks with spatial vulnerability, and it is an effective quantitative tool for reducing systemic disaster risk.     

The link between parenting approaches and health behavior: A systematic review

The familial home environment, where parenting takes place, plays an important role in the health behaviors that children and adolescents engage in and has implications on health and well-being in later life. Lifestyle-related behaviors predispose children and adolescents to the global burden of non-communicable and other lifestyle-related diseases. This review therefore examined and described previous studies looking at the associations between health behaviors and parenting approaches. It suggests that engagement in health behaviors, which promotes overall health and well-being, was associated with autonomy, supportive parenting, parental encouragement, behavior control, parental nurturance, warmth and responsiveness, and parental involvement. The review highlights the gap in literature focusing on the health behavior of children and adolescents as well as on parenting. In addition, the review also provides an overview of the continents where fewer studies have examined the presented associations. The findings presented also serve as a guide for program development and implementation to address the increase in non-communicable and other lifestyle-related diseases.     

Confidence intervals and bands for the binormal ROC curve revisited

Two types of confidence intervals (CIs) and confidence bands (CBs) for the receiver operating characteristic (ROC) curve are studied: pointwise CIs and simultaneous CBs. An optimized version of the pointwise CI with the shortest width is developed. A new ellipse-envelope simultaneous CB for the ROC curve is suggested as an adaptation of the Working-Hotelling-type CB implemented in a paper by Ma and Hall (1993). Statistical simulations show that our ellipse-envelope CB covers the true ROC curve with a probability close to nominal while the coverage probability of the Ma and Hall CB is significantly smaller. Simulations also show that our CI for the area under the ROC curve is close to nominal while the coverage probability of the CI suggested by Hanley and McNail (1982) uniformly overestimates the nominal value. Two examples illustrate our simultaneous ROC bands: radiation dose estimation from time to vomiting and discrimination of breast cancer from benign abnormalities using electrical impedance measurements.