Health-care Work in Globalization: News Reports on Care Worker Migration to Japan

Health-care worker migration has emerged as a social issue in Japan, contrary to it has in Indonesia. This article shows how national contexts affected by globalization have shaped social understandings and policies towards health-care worker migration in the two societies over time. Analyses of news coverage in the Japanese and Indonesian national media reveal a gap of social responses toward this change. The Japanese are more likely to respond negatively to health-care worker migration; yet they intend to face cross-cultural challenges, although slowly, making revisions to related policies. In contrast, in Indonesia, from where health-care workers migrate to Japan and many other countries, this tends to be understood positively, overall, as providing economic benefits and permitting Indonesian professionals to contribute to the worker shortage in Japan. I interpret these results based on the literature on health-care worker migration, emerging global norms and local changes, and comparative research on employment and care work. This study contributes to the sociological understanding of worker migration and health-care issues.     

Polygyny and reproductive behavior in sub-saharan Africa: A contextual analysis

In this paper I examine the effect of polygyny on aggregate reproductive behavior. I argue that within countries there exist different polygyny regimes, each exhibiting a unique reproductive pattern. Using the 1988/1989 Kenya Demographic and Health Survey (KDHS1) data, I identify three distinct regimes: low-polygyny, mid polygyny, and high-polygyny regimes. The results of the bivariate and multivariate analyses reveal strong differences in reproductive preferences and behaviors across polygyny regimes. High-polygyny regimes, for instance, maintain a value orientation that favors and encourages high reproductive performance. The force of this pronatalism operates equally for men and women; but whereas men in this regime attain their reproductive goals by marrying multiple wives, women attain theirs by maximizing their reproductive capabilities. This maximization occurs through early initiation of sexual/reproductive activity, universal marriage and minimal interruption of marriage, nonuse of contraception within a union, and a positive attitude toward high fertility.     

Dating Relationships in Older Adulthood: A National Portrait

Dating in later life is likely common, especially as the proportion of older adults who are single continues to rise. Yet there are no recent national estimates of either the prevalence or factors associated with dating during older adulthood. Using data from the 2005–2006 National Social Life, Health, and Aging Project, a nationally representative sample of 3,005 individuals ages 57–85, the authors constructed a national portrait of older adult daters. Roughly 14% of singles were in a dating relationship. Dating was more common among men than women and declined with age. Compared to non‐daters, daters were more socially advantaged. Daters were more likely to be college educated and had more assets, were in better health, and reported more social connectedness. This study underscores the importance of new research on partnering in later life, particularly with the aging of the U.S. population and the swelling ranks of older singles.     

Alternating event processes during lifetimes: population dynamics and statistical inference

In the literature studying recurrent event data, a large amount of work has been focused on univariate recurrent event processes where the occurrence of each event is treated as a single point in time. There are many applications, however, in which univariate recurrent events are insufficient to characterize the feature of the process because patients experience nontrivial durations associated with each event. This results in an alternating event process where the disease status of a patient alternates between exacerbations and remissions. In this paper, we consider the dynamics of a chronic disease and its associated exacerbation-remission process over two time scales: calendar time and time-since-onset. In particular, over calendar time, we explore population dynamics and the relationship between incidence, prevalence and duration for such alternating event processes. We provide nonparametric estimation techniques for characteristic quantities of the process. In some settings, exacerbation processes are observed from an onset time until death; to account for the relationship between the survival and alternating event processes, nonparametric approaches are developed for estimating exacerbation process over lifetime. By understanding the population dynamics and within-process structure, the paper provide a new and general way to study alternating event processes.     

Unmet need for couples: An analytical framework and evaluation with DHS data

While estimates of unmet need continue to be an important measure of the extent of demand for contraception and family planning programs success in developing countries, there are various reservations about the validity of these estimates. For instance, the traditional formulation of the measurement has relied solely on information from women while inferences from the findings are often drawn for couples. As more survey data have become available for both men and women in a number of countries, there is increasing evidence suggesting that husbands' preferences are indeed important determinants of the reproductive behavior of couples. This paper developsan analytical framework for measuring unmet need for couples. The approach: (1) takes a fresh look at the classification of pregnant and amenorrheic women, and (2) incorporates the contraceptive use and fertility preferences of husband and wife in estimating the level of unmet need in six sub-Saharan African countries. Our findings shows that taking these factors into account results in a 50 to 66 percent reduction in the level of unmet need in these countries. The importance of husbands' variables in determining the level of unmet need is clearly evident when examined among fecund couples in which the wife is neither pregnant nor amenorrheic. The implications of these findings for family planning programs and research are discussed.     

图木舒克佛教故事图考

疏勒国和于阗、龟兹一样,当年为西域佛教大国,但是目前学界对疏勒佛教考古的研究却比较薄弱.20世纪初,法国学者伯希和在新疆图木舒克脱库孜萨来佛寺遗址发现几幅佛教故事图,90年代,该寺院遗址又出土了一件佛教故事图,这为研究佛教故事图在丝绸之路的流行提供了重要材料。本文将讨论这些佛教故事图的艺术风格和宗教内涵,探讨疏勒佛教性质.     

A voluntary participation game through a unit-by-unit cost share mechanism of a non-excludable public good

The strategic analysis of voluntary participation in the public good provision has shown two distinct results. First, when the provision of public goods is binary, there are Nash equilibria supporting efficient allocations, and these are Strong Nash equilibria of the game. On the other hand, a model of a continuous public good (Saijo–Yamato, J Econ Theory 84:227–242, 1999) showed that the participation of all agents is not an equilibrium in many situations. This article considers the provision of a discrete and multi-unit public good, and examines a unit-by-unit participation game. Namely, people are asked to participate in each unit of public good provision, and those who chose to participate share the marginal cost of public good. In this game of public good provision, there are subgame-perfect equilibria that are Pareto efficient. We also use the refinement concepts to eliminate inefficient subgame-perfect equilibria and also to characterize the efficient subgame-perfect equilibria.     

Biomechanical analysis of loading/unloading a ladder on a truck

Loading/unloading a ladder on vehicles are frequent tasks and involve overhead handling that may expose workers to risk factors of shoulder musculoskeletal disorders. The objective of the present study was to evaluate posture, forces required and perceived exertion when loading and unloading the ladder on a utility truck. Thirteen male overhead line workers from an electric utility in Brazil participated in this study. Shoulder elevation angle was measured using inclinometers. The required force to load/unload the ladder was measured by dynamometer. Subjective assessment of the perceived exertion was recorded to compare the exertion reported during the test conditions to the field conditions. The task of loading/unloading the ladder presented risks of shoulder musculoskeletal disorders (MSDs) to workers because it requires high levels of force (approximately 60% of the maximal force) combined with overhead posture of the shoulders (more than 100° from the neutral posture). Age and height presented to interfere in biomechanical risks presented in load/unload task. There was no significant difference between the subjective exertion during the test conditions and handling the ladder in the field. Ergonomic intervention is recommended to reduce these risks for shoulder MSDs.     

The possibility of efficient provision of a public good in voluntary participation games

In this study, we provide the conditions for efficient provision of a public good in a participation game in which a non-negative integer number of units of the public good can be provided. In the case in which at most one unit of the public good can be provided, we provide refinements of Nash equilibria at which agents choose only a Nash equilibrium with an efficient allocation and provide sufficient conditions for cost-sharing rules that guarantee the existence of a Nash equilibrium with an efficient allocation. In the case of a multi-unit public good, we provide a necessary and sufficient condition for the existence of a Nash equilibrium with an efficient allocation and prove that Nash equilibria are less likely to support efficient allocations if the participation of many agents is needed for efficient provision of the public good in the case of identical agents. I would like to thank Koichi Tadenuma, Yukihiro Nishimura, Toshiyuki Fujita, John Weymark, Tatsuyoshi Saijo, Takehiko Yamato, Toshiji Miyakawa, Motohiro Sato, Takashi Shimizu, Nobue Suzuki, and Dirk T. G. Rübbelke for helpful comments and suggestions. I also thank the anonymous referees for detailed comments and suggestions. This research was supported by the Japanese Economic Research Foundation and the Grand-in-Aid for Young Scientists (Start-up) from the Japan Society for the Promotion of Science. Any remaining errors are my own.