Towards a system-theoretical decision logic

A system-based decision logic predicated on subjective and objective probabilities is developed incorporating the Bayesian learning process. Selection of specific analytical instruments for generating informational stock pertaining to the system under investigation is described by learning curves which empirically treat either growth in raw information stocks or- which, as a corollary, empirically measure the reduction in expected error associated with models of system phenomena. The decision logic is extended for handling shifts in instrumental modalities, that is, switching from one instrumental category to another during the analysis process. Thus, selection of analytical instruments, and development of system-analysis strategies, need not be totally a prioristic. Although the procedural paradigm presented here is still somewhat immature, it may help focus attention on opportunities for optimizing analytical and system modelling processes.     

Social Capital in Korea: Relational Capital,Trust, and Transparency

This article starts by distinguishing two different types of social capital, that is, societal moral resource capital and relational capital. Social capital as a societal moral resource is best characterized in Putnam's works. Social capital as the relational mobilization of information and control is best conceptualized by Coleman. By contrasting these two aspects of social capital, and by contextualizing the peculiarity of social relations in East Asian countries, this article explores the characteristics of social capital in Korea. For that purpose, I focus on the working of relational capital, or inmaek, in the creation and reproduction of social inequality. Moreover, I calculate the macro-level transformation of Korean society in terms of the role of societal moral resources.     

From past trauma to post-traumatic growth: The role of self in participants with serious mental illnesses

Studies have shown that people with serious mental illness are more likely to have experienced trauma compared to the general population. This qualitative study employed a grounded theory approach to explore how trauma histories influenced the process of triggering, developing, and recovering from serious mental illness. Findings based on in-depth interviews with 15 participants illustrated the intersection of trauma, serious mental illness, and post-traumatic growth. Experiencing trauma compromised participants’ self-functioning, causing issues such as affect dysregulation, distorted self- and other- concepts and relationship difficulties, meaninglessness, and existential fears, all of which negatively impacted participants’ mental health and behavior. At the same time, participants with serious mental illness were able to achieve post-traumatic growth with the “transformed-self” via self-acceptance, self-exploration, self-worth, and self-fulfillment. Findings of this study have useful implications for trauma-informed care in mental health treatment. Mental health professionals should address clients’ trauma histories to prevent re-traumatization and design trauma-informed programs that use and build clients’ inner resources and strengths to promote post-traumatic growth.     

Disparities Between HIV Testing Levels and the Self-Reported HIV-Negative Status of Sexually Active College Students

The methodological issues of using self-reported human immunodeficiency virus (HIV) testing history to determine HIV infection status are understudied. This study aimed to assess the disparities between HIV testing history and self-reported HIV status, with a specific objective of estimating the prevalence of self-reported HIV-negative status in sexually active students who had never had an HIV test (inaccurate self-disclosure). Participants were recruited from four Hong Kong universities; 255 students were included in the analysis, with 16.1% of participants being men who have sex with men (MSM). Overall, 81.6% of participants reported they never had been tested for HIV, with inaccurate self-disclosure by 65.9% of participants. Among participants who used condoms inconsistently, only 20.2% had had HIV tests, with inaccurate self-disclosure by 66.7% of subjects. Among MSM students, only 36.6% had had HIV tests, with inaccurate self-disclosure by 61.0% of participants. Among MSM students who used condoms inconsistently, only 35.1% had had HIV tests, with inaccurate self-disclosure by 62.2% of participants. The findings raise concerns about the use of self-reported HIV status in clinical practice and research. The low prevalence of HIV testing found suggests that interventions to promote HIV testing should be continued.     

Combined Pricing and Portfolio Option Procurement

In this paper, we study a single‐product periodic‐review inventory system that faces random and price‐dependent demand. The firm can purchase the product either from option contracts or from the spot market. Different option contracts are offered by a set of suppliers with a two‐part fee structure: a unit reservation cost and a unit exercising cost. The spot market price is random and its realization may affect the subsequent option contract prices. The firm decides the reservation quantity from each supplier and the product selling price at the beginning of each period and the number of options to exercise (inventory replenishment) at the end of the period to maximize the total expected profit over its planning horizon. We show that the optimal inventory replenishment policy is order‐up‐to type with a sequence of decreasing thresholds. We also investigate the optimal option‐reservation policy and the optimal pricing strategy. The optimal reservation quantities and selling price are shown to be both decreasing in the starting inventory level when demand function is additive. Building upon the analytical results, we conduct a numerical study to unveil additional managerial insights. Among other things, we quantify the values of the option contracts and dynamic pricing to the firm and show that they are more significant when the market demand becomes more volatile.     

A New Test to Measure Emotion Recognition Ability: Matsumoto and Ekman's Japanese and Caucasian Brief Affect Recognition Test (JACBART)

In this article, we report the development of a new test designed to measure individual differences in emotion recognition ability (ERA), five studies examining the reliability and validity of the scores produced using this test, and the first evidence for a correlation between ERA measured by a standardized test and personality. Utilizing Matsumoto and Ekman's (1988) Japanese and Caucasian Facial Expressions of Emotion (JACFEE) and Neutral Faces (JACNeuF), we call this measure the Japanese and Caucasian Brief Affect Recognition Test (JACBART). The JACBART improves on previous measures of ERA by (1) using expressions that have substantial validity and reliability data associated with them, (2) including posers of two visibly different races (3) balanced across seven universal emotions (4) with equal distribution of poser race and sex across emotions (5) in a format that eliminates afterimages associated with fast exposures. Scores derived using the JACBART are reliable, and three studies demonstrated a correlation between ERA and the personality constructs of Openness and Conscientiousness, while one study reports a correlation with Extraversion and Neuroticism.     

How Unpopular Policies are Made: Examples from South Africa,Singapore and Bangladesh

In this article we contribute to the emerging knowledge on migration policy‐making in two ways. Firstly, we address the relative lack of research on the gendered nature of migration policy‐making. Secondly we contribute to understanding migration policymaking in postcolonial contexts. Based on case studies from Bangladesh, South Africa, and Singapore, we trace the drivers of policy change in these contexts and how the gendered vulnerability of the intended beneficiaries impacted the policy process. We found that there were four main drivers of migration policy‐making in each of the countries. They were: the role‐players in the policy change process, the debates that shaped the policy change, the research involved, and the political context in which the policy change took place. While our research drew on existing policy frameworks, it also showed that policy development is shaped by complex socio‐political conditions.     

Social Networking Site Use Predicts Changes in Young Adults’ Psychological Adjustment

This study examined youths’ friendships and posted pictures on social networking sites as predictors of changes in their adjustment over time. Observational, self‐report, and peer‐report data were obtained from a community sample of 89 young adults interviewed at age 21 and again at age 22. Findings were consistent with a leveling effect for online friendships, predicting decreases in internalizing symptoms for youth with lower initial levels of social acceptance, but increases in symptoms for youth with higher initial levels over the following year. Across the entire sample, deviant behavior in posted photos predicted increases in young adults’ problematic alcohol use over time. The importance of considering the interplay between online and offline social factors for predicting adjustment is discussed.     

Factor Structure and Psychometric Properties of the Work-Family Balance Scale in an Urban Chinese Sample

The purpose of this study was to explore the factor structure of the Work-Family Balance Scale (WFBS) and examine its reliability and validity in use in the urban Chinese population. The scale was validated using a sample of 605 urban Chinese residents from 7 cities. Exploratory factor analysis identified two factors: work-family conflict and work-family enrichment. The WFBS showed adequate reliability and concurrent validity. The WFBS is a reliable and valid instrument to measure work-family balance for Chinese working parents. However, further examination of the scale is needed.     

Hedging strategic flexibility in the distribution optimization problem

Motivated by the increasing prevalence of flexibility hedging in corporate-level risk management programs, this paper focuses on the treatment of hedging operational risks in the coordinated replenishment and shipment for distribution systems. The forward option pricing model with the generalized autoregressive conditional heteroskedasticity (GARCH) model for stochastic demand forecasting is adopted for constructing inventory volume flexibility. We therefore propose a hedge-based coordinated inventory replenishment and shipment (HCIRS) methodology for flexibly making inventory hedging and optimal routing assignment decisions as well as coordinating replenishment and shipment policies. The HCIRS methodology provides insight into strategic flexibility adopted for a real-life inventory–distribution problem faced by one of the major East Asia food supply networks and turns out to be very efficient. The proposed HCIRS methodology has provided evidence of better results than the traditional operational techniques for the presented case in this paper.