Patterns of Time Use Across the Life Span in Korea: A Latent Class Analysis and Age and Gender Differences

The purpose of this study was to gain an understanding of time use and the patterns of time use across the life span using a socioemotional selectivity theory. The data used for this study were from the “Korean Time Use Survey,” which is collected every 5 years by Statistics Korea (KOSTAT). The data collected in 1999, 2004, and 2009 were used to analyze the patterns of time use using latent class analyses and to observe the differences of time use by age and gender. The results were summarized as follows: Based on the analyses of nine behavior classifications, after sleep and personal care, Korean allocated more time in daily activities to relationship and leisure time, followed by education, paid work, and household management, with the order differing between each age group and gender. Three different classes of time use were classified at each age group. Education-centered time use was revealed to be mainly in the young, paid work-centered in the middle-aged, and relationship and leisure-centered in older adults. We find significant gender differences. Men’s patterns of time did not change markedly across the 3 years, while women’s patterns have shifted. Meanwhile, in the age 65 and older group, paid work appeared alongside as well as leisure among most prominent activities, were appeared as dominant forms of time use. This phenomenon is closely related to reflecting high rates of elderly poverty in Korea. Further discussions concerning the time use by age and gender were provided and countermeasures for changing time use in later life were discussed.     

The Past and Present Cultural Experiences of Adopted Korean American Adults

This study used a mixed-method approach to examine the past and present cultural life experiences of Korean adult adoptees. Open-ended responses across four developmental periods (childhood, adolescence, young adulthood, and adulthood) were qualitatively analyzed and categorized into seven categories of cultural activities. We then quantitatively investigated the relationship between these domains and ethnic identity. Ethnic identity was positively correlated with only cultural experiences from young adulthood. The practical relevance of the research findings to adopted adults and adoptive families is discussed.     

Changes in At-Risk American Men's Crime and Substance Use Trajectories Following Fatherhood

Fatherhood can be a turning point in development and in men's crime and substance use trajectories. At-risk boys (N = 206) were assessed annually from ages 12 to 31 years. Crime, arrest, and tobacco, alcohol, and marijuana use trajectories were examined. Marriage was associated with lower levels of crime and less frequent substance use. Following the birth of a first biological child, men's crime trajectories showed slope decreases, and tobacco and alcohol use trajectories showed level decreases. The older men were when they became fathers, the greater the level decreases were in crime and alcohol use and the less the slope decreases were in tobacco and marijuana use. Patterns are consistent with theories of social control and social timetables.     

Coffee intake,health-related quality of life,and associated factors of overactive bladder in older Korean women living in rural South Korea

ABSTRACT

Overactive bladder (OAB) is a common health problem in older women. The aim of the study was to investigate coffee consumption, health-related quality of life (HRQOL), and associated factors of OAB in older Korean women living in rural South Korea. A total of 248 women aged 65 years and older participated in this study. Chi-square tests, t-tests, and multivariable logistic regressions were performed. The means of coffee consumption between OAB and non-OAB groups were not significantly different. Women with OAB showed significantly lower HRQOL than women with stress urinary incontinence only. OAB was associated with high body mass index and poor health status.     

A Feminist Political Economic Critique of Women and Investment in the Popular Media

From a feminist political economic perspective, this paper examines the relationship between gender and investment in the popular media in three interrelating ways. First, a discourse analysis was used to examine eight popular books on investment for women published in the US. The popular financial literature asks women to solve the problems that they encounter in a patriarchal household by participating in the financial market. Second, Suze Orman was used as a case study to show the commodification process of financial information through the tactics brand differentiation, multi-platform delivery, and creation of niche markets. Third, the consumption of commodities is linked to that of production and distribution by revealing the relations between the gendered production and reproduction in the household, transnational corporations, and financial institutions.     

First‐order bias correction for fractionally integrated time series

Most of the long memory estimators for stationary fractionally integrated time series models are known to experience non‐negligible bias in small and finite samples. Simple moment estimators are also vulnerable to such bias, but can easily be corrected. In this article, the authors propose bias reduction methods for a lag‐one sample autocorrelation‐based moment estimator. In order to reduce the bias of the moment estimator, the authors explicitly obtain the exact bias of lag‐one sample autocorrelation up to the order n⁻¹. An example where the exact first‐order bias can be noticeably more accurate than its asymptotic counterpart, even for large samples, is presented. The authors show via a simulation study that the proposed methods are promising and effective in reducing the bias of the moment estimator with minimal variance inflation. The proposed methods are applied to the northern hemisphere data. The Canadian Journal of Statistics 37: 476–493; 2009 © 2009 Statistical Society of Canada     

A high-quality-supplier selection model for supply chain management and ISO 9001 system

Supplier selection process for supply chain management (SCM) and ISO 9001 quality management system environments is considered. Determining suitable suppliers in the supply chain has become a key strategic consideration. However, the nature of these decisions is usually complex and unstructured. This paper proposes a high-quality-supplier selection (HQSS) model to deal with supplier selection problems in supply chain management. In selecting a supplier, quality management factors are considered first, and then price, delivery, etc. Quality management factors include a quality management audit, product testing, engineering work force, capability index, training time, etc., based on a five-interval scale. Next, the HQSS model determines the final solution by considering factors such as price, production lead-time, and delivery time.