Double robust estimator in general treatment regimes based on Covariate-balancing

Double robust estimators have double the chance of being a consistent estimator of a causal effect in binary treatments cases. In this paper, we proposed an estimator of a causal effect for general treatment regimes based on covariate-balancing. Under parametrical situation, our estimator has double robustness.     

Possibilities for Using the Internet in Japanese Education in the Information Age Society

As the globalization of the economy has accelerated in recent years, the Internet has become an essential part of the infrastructure, primarily as a communications medium. In the Information Age society, the ADC principle (autonomy, distribution, and collaboration) has become an underlying assumption, which also applies to the institution of education. The fading power of Japan may come from its educational system, which emphasizes standardization and uniformity, while discouraging creativity and individuality. Now is the time for Japan to reevaluate its educational system at every level so that it better supports the societal and business needs of the Information Age economy. Therefore, this paper proposes five kinds of changes to the Japanese educational system. They are community networks, digital kids and participatory education, growing up digital and youth education, online higher education, and media literacy education for the elderly. First, community networks provide citizens with better and more convenient access to local services, activities, and information. Second, the notion of the digital kid suggests that it should be participatory, including all members of the community. Third, as digital kids grow up digital using the Internet would enhance both intergenerational and intra‐generational communication in the twenty‐first century. Fourth, online higher education should become widely available in Japanese society in the twenty‐first century. Fifth, although media literacy education for the elderly in Japan is yet to come to its maturity, senior network groups are beginning to receive wider attention as they will provide Japanese elderly with a new avenue for communication. When and only when these educational reforms are pursued, will Japanese people be able to participate effectively in the global society.     

KI: The ‘Fervor of Vitality’ and the Subjective Self

Curiously, in the word ki, we find that the Japanese have internalized physical energy into a felt-feeling (e.g., a sense of vital potency and aliveness), thereby significantly expanding the substance of the T phase of the self. Of conceptual interest here is that in the word ki—used as a root word to indicate and connect elementary feelings and thought processes—the Japanese have reified ‘energy’ into a subjective entity that moves the individual to become both activator and respondent of interactional processes. The general awareness of ki by the people themselves is evidenced in various facets of their personal consensual life—from socialization practices to formal presentation. In closing, the author attempts to link ki to Mead's ‘impulse’ concludes that (a) ki is more substantive and active than ‘impulse’ in the movement of the social act; and (b) in contrast to that of Mead, the Japanese model provides an explicit conceptual demonstration of the substantive role of the ‘I’ as well as affective elements in social interaction.     

On f-tests and linear hypothesis in a general linear model

A simple method of setting linear hypotheses testable by F-tests in a general linear model when the covariance matrix has a general form and is completely unknown, is provided. With some additional conditions imposed on the covariance matrix, there exist the UMP invariant tests of certain linear hypotheses. We derive them to compare the powers with those of F-tests obtained under no restrictions on the covariance matrix. The results are illustrated in a multiple regression model with some examples.     

On the consistency and the robustness in model selection criteria

Abstract

In the model selection problem, the consistency of the selection criterion has been often discussed. This paper derives a family of criteria based on a robust statistical divergence family by using a generalized Bayesian procedure. The proposed family can achieve both consistency and robustness at the same time since it has good performance with respect to contamination by outliers under appropriate circumstances. We show the selection accuracy of the proposed criterion family compared with the conventional methods through numerical experiments.     

Language and power in Japanese transplants in Scotland

Previous research into Japanese owned and managed enterprises in western countries has been alert to problems in cross‐cultural communication but there has been little research into the linguistic patterns accompanying these activities. This study of seven such plants in Scotland illustrates key features of the linguistic patterns evident in them. Forms of pidgin develop in co‐operative working environments but unusually they are based on the language of the formal subordinates, local English speaking managers and workers. In contrast, and more in line with expectations from socio‐linguistic theory, the local dialect is used as a device to promote local workforce solidarity against expatriate management. The former discrepancy between material and cultural power, which is not expected on the basis of Bourdieu's and related theories of cultural behaviour, is explained in terms of the differing career paths of Japanese and non‐Japanese personnel, the marginal involvement of Japanese management in the local society and their reticence in asserting cultural power commensurate with their economic power. However, these lingusitic developments were local phenomena that did not challenge Japanese managerial control, both local and corporate, of decisions on development and investment. Hence, the opposition between cultural and material power may be permitted to persist because of these limited effects.     

Farm Mechanization and Women's Life Pattern: —Changing Time Allocation—

Abstract  Farm mechanization in Japan could be understood as a process brought a bout in the constellation of economic and political milieus of high economic growth. Labor productivity was raised to a degree unproportionate to the size of farming and yielded large amount of surplus labor power. This inherent contradiction became quite apparent after 1970. The expansion of non-farm labor market absorbed the surplus labor power. Thus part-time farming spreaded. changing the life pattern of farm families toward differentiation and individuation. A panel study at a rural community at the south-western part of HONSHU enables us to compare the time allocation of family members before and after mechanization. After mechanization. time allocation pattern differentiated by generation and sex. Younger members have gained private spheres outside farming. The older are left at farm, working in the fields. However, the time allocation data collected at a rural community at the northeastern part of HONSHU tells that the differentiation and individuation was slow due to the under-development of non-farm labor market.     

On Efron's Parameterization

This paper discusses a curved exponential family of distributions which is defined by a differential equation with respect to the expectation parameters in the two–dimensional exponential family. The differential equation considered here is the same as the one given by Efron (1975) for the trinomial distribution. This equation is extended here to a general exponential family, and called Efron's parameterization in the two–dimensional exponential family. The solution of Efron's parameterization is obtained explicitly in an exponential family, although Kumagai & Inagaki (1996) showed that there exists no proper solution of Efron's equation for the trinomial distribution, in line with the counterexample given by Efron (1975 p. 1206). The paper gives some characterizations of Efron's parameterization with special reference to Fisher's circle model. The implications of these characterizations are the two–dimensional normal distribution and a spiral curve in the plane.