Priority Rules for Multi‐Task Due‐Date Scheduling under Varying Processing Costs

We study the scheduling of multiple tasks under varying processing costs and derive a priority rule for optimal scheduling policies. Each task has a due date, and a non‐completion penalty cost is incurred if the task is not completely processed before its due date. We assume that the task arrival process is stochastic and the processing rate is capacitated. Our work is motivated by both traditional and emerging application domains, such as construction industry and freelance consulting industry. We establish the optimality of Shorter Slack time and Longer remaining Processing time (SSLP) principle that determines the priority among active tasks. Based on the derived structural properties, we also propose an effective cost‐balancing heuristic policy and demonstrate the efficacy of the proposed policy through extensive numerical experiments. We believe our results provide operators/managers valuable insights on how to devise effective service scheduling policies under varying costs.     

Path to “Stardom” in Globally Distributed Hybrid Teams: An Examination of a Knowledge‐Centered Perspective using Social Network Analysis

Although distributed teams have been researched extensively in information systems and decision science disciplines, a review of the literature suggests that the dominant focus has been on understanding the factors affecting performance at the team level. There has however been an increasing recognition that specific individuals within such teams are often critical to the team's performance. Consequently, existing knowledge about such teams may be enhanced by examining the factors that affect the performance of individual team members. This study attempts to address this need by identifying individuals who emerge as “stars” in globally distributed teams involved in knowledge work such as information systems development (ISD). Specifically, the study takes a knowledge‐centered view in explaining which factors lead to “stardom” in such teams. Further, it adopts a social network approach consistent with the core principles of structural/relational analysis in developing and empirically validating the research model. Data from U.S.–Scandinavia self‐managed “hybrid” teams engaged in systems development were used to deductively test the proposed model. The overall study has several implications for group decision making: (i) the study focuses on stars within distributed teams, who play an important role in shaping group decision making, and emerge as a result of a negotiated/consensual decision making within egalitarian teams; (ii) an examination of emergent stars from the team members’ point of view reflects the collective acceptance and support dimension decision‐making contexts identified in prior literature; (iii) finally, the study suggests that the social network analysis technique using relational data can be a tool for a democratic decision‐making technique within groups.     

Making connections between global production networks for used goods and the realm of production: a case study on e‐waste governance

Recent scholarship on waste within economic geography and global production network (GPN) studies has identified several unique characteristics of networks for used goods vis‐à‐vis ‘traditional’ GPN studies focused on production, exchange and consumption. However, in un‐bracketing GPNs to include analysis of post‐consumption activity, identifying how the distinct moments of production, exchange, consumption and disposal/recycling are related becomes a crucial task. Towards this end, I present a case study on the governance of e‐waste networks that draws upon discussions of performativity and Hudson's cultural political economy approach to GPNs. In my analysis, I demonstrate how multiple factors, such as ideological differences over how to handle e‐waste, the non‐standardized nature of used goods, as well as production factors such as design choices and planned obsolescence, all shape and disrupt efforts to standardize and coordinate resource recovery and hazard mitigation in the post‐consumption phase of electronic goods. Such analysis moves past the novelty of GPNs for used goods toward a more integrated understanding of GPNs as a whole.     

Investigating Differences in How the News Media Views Homosexuality Across Nations: An Analysis of the United States,South Africa,and Uganda

While there is a wealth of information about the extent to which people across the world disapprove of homosexuality, we know a lot less about the lenses through which they view same‐sex relations. The aim of this study is to understand better how homosexuality is framed in the public press, and how religion and economic development may combine to shape this discourse. Through an analysis of almost 400 newspaper articles, this study compares how homosexuality is framed in Uganda, South Africa, and the United States. Because these nations have high levels of religious belief, but differ in their level of economic development and democracy, we can assess how these factors interact to shape portrayals. Drawing on work from cultural sociology and the sociology of religion, this study shows that the United States is much more likely than Uganda to frame homosexuality as a civil rights issue and use entertainers as claimsmakers. Conversely, articles from Uganda are more likely than those from the United States or South Africa to frame homosexuality as a religious issue and draw on religious claimsmakers. Likewise, Uganda is much more likely than South Africa to discuss homosexuality in the context of Western influences.     

“晨举脂烛”解诂

描述武王克商的“晨举脂烛”一语多次出现在典籍中,而现代辞书对“晨”的解释基本统一为日出前后天色已明的一段时间,此时仍“举脂烛”作战实在令人费解。经过考证,“晨”在古汉语中的时段是凌晨3—5点,天仍未亮,因此才会出现“晨举脂烛”作战一说。     

New avenues to be opened for social protection in the Arab world: the case of Egypt*

This article looks at social protection in the Arab world. Giving the example of Egypt, it asks why poverty is so widespread and why – despite the country's numerous social protection systems – social risks are a major contributing factor to it. It concludes that reforms are due. The existing systems are well funded but inefficient and more to the benefit of the better‐off than the poor. A reform approach is proposed which builds on both conventional and more innovative strategies: campaigns should be launched to raise public awareness of social risks; social assistance spending should be increased; and the operating public pension schemes should be reformed. At the same time, new avenues have to be opened to meet the specific needs of informal sector workers who have extreme difficulty in being covered by social insurance or social assistance. To this purpose, micro‐insurance is a promising approach for the Arab‐world region.     

Semicontinuous Representability of Homothetic Interval Orders by Means of Two Homogeneous Functionals

It is well known that interval orders are particularly interesting in decision theory, since they are reflexive, complete and nontransitive binary relations which may be fully represented by means of two real-valued functions. In this paper, we discuss the existence of a pair of nonnegative, positively homogeneous and semicontinuous real-valued functionals representing an interval order on a real cone in a topological vector space. We recover as a particular case a result concerning the existence of a nonnegative, positively homogeneous and continuous utility functional for a complete preorder on a real cone in a topological vector space.     

Key questions in considering guided practice for vulnerable Australian children

Anna Yeatman and Joanna Penglase (August 2004) provide a useful review of the literature on ‘Looking After Children’ (LAC), a guided practice system for children living in out‐of‐home care. In summarising the polarised debate, the authors point to an unresolved situation in which advocates have uncritically adopted individualised care planning, as a way of improving outcomes in child welfare while critics have not offered alternatives for systemic reform. This is an area of troubled social policy and the debate cannot rest here. This paper suggests a number of pressing research questions to be addressed. The urgency of the issues and the characteristics of local service systems mean LAC needs to be evaluated in the Australian context, taking into account the local experience and participation of children, families and their social workers.     

A Data‐Driven Approach to Assessing Supply Inadequacy Risks Due to Climate‐Induced Shifts in Electricity Demand

The U.S. electric power system is increasingly vulnerable to the adverse impacts of extreme climate events. Supply inadequacy risk can result from climate‐induced shifts in electricity demand and/or damaged physical assets due to hydro‐meteorological hazards and climate change. In this article, we focus on the risks associated with the unanticipated climate‐induced demand shifts and propose a data‐driven approach to identify risk factors that render the electricity sector vulnerable in the face of future climate variability and change. More specifically, we have leveraged advanced supervised learning theory to identify the key predictors of climate‐sensitive demand in the residential, commercial, and industrial sectors. Our analysis indicates that variations in mean dew point temperature is the common major risk factor across all the three sectors. We have also conducted a statistical sensitivity analysis to assess the variability in the projected demand as a function of the key climate risk factor. We then propose the use of scenario‐based heat maps as a tool to communicate the inadequacy risks to stakeholders and decisionmakers. While we use the state of Ohio as a case study, our proposed approach is equally applicable to all other states.     

Fragments of Modernization: Domestic Spaces Indicating Traditional Dialects in a Modern Speech

This article examines the change in Turkish domestic space through modernization and, in particular, the artifact of lace, as a nonchanging object in Turkish home in its relationship with the “traditional” and the “modern” domestic settings. Thereby it investigates how traditional and modern settings are defined in Turkish society and, this leads to a further analysis of the modernization process in Turkey within the scope of Turkish house and its domestic settings. The aim of the article is to analyze lace as an agent, which is an actant of the change in domestic settings, to read the connection between the daily life of people and social lives of artifacts. Therefore, examining the dialogue of lace with traditional and modern domestic settings provides to deconstruct the network of the artifact, the house and the individual during the modernization process that Turkish society has been through. The theoretical perspective of the article relies on a material‐semiotic approach with an emphasis on Latour's Actor‐Network Theory and, the methodology of the article is based on ethnography: It includes observations and semi‐structured interviews conducted with people from different social environments focusing on the meaning and the use of lace in domestic environment.