Excessively delayed maternal reaction after their perception of decreased fetal movements in stillbirths: Population-based study in Japan

Background

Fetal movement is the most common method to evaluate fetal well-being. Furthermore, maternal perception of decreased fetal movements is associated with perinatal demise. Previously, we showed that perception of decreased fetal movements was the most common reason for mothers visiting the outpatient department among those who had stillbirths in our region. Further investigation of stillbirths with decreased fetal movements is essential to find a possible way of preventing stillbirth.

A Latent Class Analysis of Factors Associated with Levels of Aggression among Low-Income African American Youth in Chicago

Abstract

African American youth are often stereotyped as being more aggressive than and experience more severe negative social sanctions relative to their European American peers. This cross-sectional study assessed self-reported levels of aggression among a sample of 538 low-income African American youth in Chicago, and employed latent class analysis to determine groups of aggression. Major study findings showed low, middle high aggression group. The largest number of youth fell within the low aggression group. Social factors (e.g., low student-teacher connectedness, high risky peer norms, neighborhood violence, and family conflict) were associated with inclusion in the high aggression group. Intrapersonal factors (e.g., depression, anxiety, post-traumatic stress disorder) were associated with inclusion in the middle aggression group. Future longitudinal research should examine what factors are associated with movement across aggression groups and capitalize upon knowledge gained in the current study to develop interventions.     

Designing and facilitating collaboration in R&D: A case study

This case study aims to highlight the strategic decisions and managerial practices in the formation and operation of a co-located research unit within a national laboratory. The empirical evidence is based on interviews with members of the research unit as well as responses from a research environment survey. The findings of the case study suggest specific strategies that are conducive not only for the co-location of research units but also for research management in general. Principal among these are the need to balance increases in diversity and complexity with mechanisms of integration and the use of specific management practices and leadership qualities that support these activities.     

The issues of gender in contemporary Japanese working life: A Japanese “vicious circle”

The aim of this article is to analyze how the gender division of labour has been embodied in the social expectation of women’s roles in urban settings, mainly with respect to married people in contemporary Japan. Especially among Japanese feminist researchers it is much discussed how gender role consciousness and the traditional division of labour have fettered the behaviour of the Japanese—both men and women. I start my discussion by examining the distinction between public and private spheres that seems to be used in different ways by researchers. The gender division of labour functions as a “vicious circle” in hindering possibilities for change, making it more difficult for women to obtain the same primary positions in working life as men and, at the same time, preventing men from enjoying family life as much as women.     

Book reviews

Review Symposium: Cross‐Cultural Roots of Minority Child Development. P.M. Greenfield & R. R. Cocking (Eds.). Hillsdale, NJ: Lawrence Erlbaum, 1994. 431 pp. $89.95, $39.95 (paper).

Understanding Practice. S. Chaiklin and J. Lave (Eds.). Cambridge: Cambridge University Press, 1993. 414 pp. $59.95.     

Simultaneous Tests for Independence Among Components of Random Vector by Step-Down Multiple Comparison Procedure

In this article, we consider testing independence among components of random vector in multivariate normal population. For testing independence, we use the modified likelihood ratio test statistic which is improved an approximation to χ² distribution of the likelihood ratio test statistic. In order to perform simultaneous tests for independence among components of random vector, we use the step-down multiple comparison procedure based on the closed testing procedure proposed by Marcus et al. (1976 Marcus , R. , Peritz , E. , Gabriel , K. R. ( 1976 ). On closed testing procedures with special reference to ordered analysis of variance . Biometrika 63 : 655 – 660 .[Crossref], [Web of Science ®] , [Google Scholar]). Finally, we perform Monte Carlo simulations and present numerical results.     

The role of vole populations in prevalence of the parasite (Echinococcus multilocularis) in foxes

Effects of population fluctuation of the gray-sided vole(Clethrionomys rufocanus) on the prevalence (infection rates) of the parasiteEchinococcus multilocularis in red fox(Vulpes vulpes) populations was investigated from 1985 to 1992 in eastern Hokkaido (Abashiri, Nemuro, and Kushiro area), Japan. This parasite needs two hosts to complete its life cycle; the gray-sided vole as its intermediate host and the red fox as its final host. We found that: (1) Infection rates in foxes depended on the current-year abundance of voles in all three study areas, particularly in Abashiri. (2) In addition to this direct density-dependence, delayed density-dependence between the infection rate and the prior-year abundance of voles was detected in Nemuro and in Kushiro. (3) The regional differences in density-dependence pattern were related to regional differences in the winter food habits of red foxes: in Abashiri the proportion of voles in the fox’s diet greatly decreases in winter, while the proportion remains high in winter in Nemuro and in Kushiro, probably because of shallower snowpack. These results suggest that infection rates in foxes in Abashiri were less influenced by the prior-year prevalence, since the infection cycle might be interrupted in winter, when voles became less important in fox’s diet. In contrast, the state of the prevalence may carry over from year to year in Nemuro and in Kushiro, because red foxes continue to eat a considerable amount of voles throughout year. The regionally contrasted results for the relationship between infection rate in foxes and vole abundance were parallel to the regional difference in fluctuation pattern of vole populations, which are highly variable in Abashiri area, but less variable in Kushiro-Nemuro area. Drastic change in vole populations appears to affect the host-parasite system.     

日本无障碍环境建设理念及推进机制分析

作为世界上人口老龄化最严重的国家,日本在满足老弱病残等弱势群体出行的无障碍环境建设方面走在了世界前列。日本无障碍城市环境体系由设施、系统规划、导向和服务4个要素构成:完备、合理的无障碍设施建设构成这一体系的基础,注重与环境融合的系统性规划将设施有效联通,以全方位的通用设计理念指导信息导向系统设计,并用服务进一步为环境建设查遗补漏。日本无障碍环境建设背后的推进机制以完善的国家无障碍设计法规体系为基石,以优先推动重点发展区域的无障碍建设为实施手段,同时提升国民无障碍环境建设意识、逐步营造良好的社会环境氛围。有效的机制建设是促进日本无障碍城市环境建设的重要推动力量。     

Japan’s Innovation of Public Organizations in the Research and Development Field

The Japanese government implemented drastic restructuring of the central government in 2001. As a part of this reform, the incorporated administrative agency (IAA) system was newly introduced in view of carrying out certain public functions in a more flexible, business-like and autonomous way. Research and development activities in the public sector are now mostly conducted by the incorporated administrative agencies. In this article, the purpose of this reorganization is firstly described followed by the outline of this system and current accomplishments. In concluding, the Japanese undertaking of a new public organization is analyzed in comparison with the European and “Anglo-Saxon” countries.

Efficient Regularization Parameter Selection Via Information Criteria

In a nonlinear regression model based on a regularization method, selection of appropriate regularization parameters is crucial. Information criteria such as generalized information criterion (GIC) and generalized Bayesian information criterion (GBIC) are useful for selecting the optimal regularization parameters. However, the optimal parameter is often determined by calculating information criterion for all candidate regularization parameters, and so the computational cost is high. One simple method by which to accomplish this is to regard GIC or GBIC as a function of the regularization parameters and to find a value minimizing GIC or GBIC. However, it is unclear how to solve the optimization problem. In the present article, we propose an efficient Newton–Raphson type iterative method for selecting optimal regularization parameters with respect to GIC or GBIC in a nonlinear regression model based on basis expansions. This method reduces the computational time remarkably compared to the grid search and can select more suitable regularization parameters. The effectiveness of the method is illustrated through real data examples.