Simultaneous Search

We introduce and solve a new class of “downward‐recursive” static portfolio choice problems. An individual simultaneously chooses among ranked stochastic options, and each choice is costly. In the motivational application, just one may be exercised from those that succeed. This often emerges in practice, such as when a student applies to many colleges or when a firm simultaneously tries several technologies. We show that such portfolio choice problems quite generally entail maximizing a submodular function of finite sets—which is NP‐hard in general. Still, we show that a greedy algorithm finds the optimal set, finding first the best singleton, then the best single addition to it, and so on. We show that the optimal choices are “less aggressive” than the sequentially optimal ones, but “more aggressive” than the best singletons. Also, the optimal set in general contains gaps. We provide some comparative statics results on the chosen set.     

Goffman's Interaction Order at the Margins: Stigma,Role, and Normalization in the Outreach Encounter

This article considers Goffman's conceptualization of interaction order at the margins of society in encounters between urban welfare workers and their clients. Observations from these encounters demonstrate practices relating to the situated management of stigma and identity, and the accomplishment of role within these service encounters. A reading of Goffman's theoretical contribution lies in revealing how social actors and social structures are realized in situ within the constraints of the interaction order sui generis. The article discusses three aspects of the outreach encounter, namely, (1) the accomplishment of role and motive, (2) the sequential phases of the outreach encounter, and (3) “the normalization ritual,” and introduces the concept of willful disattention.     

Towards a Sociology of Disclosure: The Case of Surgical Performance

Despite the increasingly widespread emphasis on the need for transparency in health‐care and elsewhere, there is limited evidence regarding the consequences of disclosing medical performance data. The evidence is disparate and has not been synthesised in a coherent way. This paper focuses on surgical performance, whose measurement is generally often seen as straight forward. It begins by outlining the context for understanding the publication of such data and then presents an analytical framework as a vehicle for conceptualising the nature of disclosure in surgery and health‐care more generally. The framework addresses key dimensions concerning one surgical specialty (cardiac surgery) and its relationship with a range of stakeholders in an English context. In particular, we examine the interaction between surgeons and between surgeons, patients, managers and policy‐makers. These relationships are framed in terms of choice and calculativeness, strategies and tactics, and trust, and need to be understood at micro, meso and macro levels. We conclude by considering how this framework provides a research agenda for a sociology of disclosure.     

From Access to Opportunity: The Evolving Social Roles of Community Colleges

This paper looks at the social role played by community colleges, the students they serve, and some of the current challenges they face. Community colleges have always been multi-mission institutions and in recent decades have been leaders in enrolling students from diverse family backgrounds. “Nontraditional” students make up the majority of community college students. This paper looks at the diversity of students in terms of race and ethnicity, first-generation college-goers, and students who are academically underprepared. The paper concludes with a discussion of the strengths of the community college experience for students coming from diverse backgrounds.     

Social Anxiety in Obese Youth in Treatment Setting

The aim of this study was to determine the prevalence of social anxiety in obese children treated in a weight management clinic. We hypothesized that social anxiety would positively correlate with obesity, and that “extremely obese” patients would have significantly higher rates of social anxiety when compared to “obese” patients. Information was collected at a multidisciplinary treatment clinic for obese youth during the first clinic visit. The social anxiety scale was administered (including parent-report and self-report scales for both elementary and adolescent versions) and demographic data was obtained. Social anxiety was found to be significantly positively correlated with BMI percentile. In addition, “extremely obese” patients had significantly higher social anxiety scores than “obese” youth at least for elementary-age youth. Trends in gender differences and racial differences in this obese pediatric clinical sample were consistent with results found in community samples. Social anxiety and obesity were found to be positively correlated in this pediatric clinic-based population. For elementary-age patients, “extremely obese” patients were at greater risk than “obese patients” for social anxiety and its various symptoms—fear of negative evaluation, social avoidance/distress in new situations, and social avoidance/distress in general. Results for adolescents were less clear. Clinical implications of these results were discussed. Limitations of this study, and directions for future research were also discussed.     

An intelligent workstation controller for integrated planning and scheduling of FMS cell

This paper presents an experimental design developed to determine a combination of robust planning and scheduling rules for an intelligent workstation controller (IWC). The IWC is used as part of the control system for an automated flexible manufacturing system. A three-level hierarchical control structure (shop, workstation and equipment)is adopted in order effectively to control a shop-floor. At the top level is a shop controller which receives orders and their associated manufacturing information, and manages interactions among workstations. The IWC defines and resolves the production control activities necessary to coordinate a group of equipment controllers so as to ensure the completion of orders. Specifically, the IWC is responsible for selecting a specific process routeing for each part, allocating resources, scheduling and coordinating the activities across the equipment, monitoring the progress of activities, detecting and recovering from errors, and preparing reports. These activities are accomplished using planning, scheduling, and execution functions. In order to demonstrate the effectiveness and robustness of the IWC, all the controllable and uncontrollable factors need to be identified and detailed. Controllable factors are those which are set by the controller and cannot be directly affected by the production environment. Uncontrollable factors are those which vary with the production environment and cannot be directly changed by the controller developer. The objective of the paper is to illustrate how a good set of controllable factors that dictate the IWC's effectiveness and robustness over various uncontrollable factors can be determined. Due to the number of possible combinations of all the factors, a complete validation of the effectiveness and robustness of the IWC is extremely time consuming and far beyond the scope of this paper. Therefore, a few planning and scheduling strategies are selected and a formal experiment is conducted. The experiment illustrates how significant performance dependencies for various planning and scheduling strategies can be identified.     

“Fracking democracy”: Issue management and locus of policy decision-making in the Marcellus Shale gas drilling debate

This study examined a two-year period in which natural gas development in the Marcellus Shale region of Pennsylvania expanded rapidly, as did public policy proposals meant to deal with the myriad legal, economic, and environmental issues that accompanied this growth. Focusing on the use of legitimacy strategies during the critical phase of the issue of hydraulic fracturing, the study examined how activists and energy industry advocates argued that different levels of government policy making – local, state, and federal – should be the locus of policy decisions. Both the “fractivists” and the energy industry sought to legitimize state-level legislators and regulators. Activists viewed federal-level intervention as legitimate leverage for their work in the state, while the energy industry saw federal regulators as redundant and restrictive. Finally, while both sides viewed local authorities as legitimate actors, the energy industry sought to limit their ability to act against the development of new wells.