On the asymptotic normality of the R-estimators of the slope parameters of simple linear regression models with associated errors

ABSTRACT

The purpose of this paper is to prove, under mild conditions, the asymptotic normality of the rank estimator of the slope parameter of a simple linear regression model with stationary associated errors. This result follows from a uniform linearity property for linear rank statistics that we establish under general conditions on the dependence of the errors. We prove also a tightness criterion for weighted empirical process constructed from associated triangular arrays. This criterion is needed for the proofs which are based on that of Koul [Behavior of robust estimators in the regression model with dependent errors. Ann Stat. 1977;5(4):681–699] and of Louhichi [Louhichi S. Weak convergence for empirical processes of associated sequences. Ann Inst Henri Poincaré Probabilités Statist. 2000;36(5):547–567].     

Walking on the Edge: Towards a Sociography of Discrimination against the Buraku: Lectures on Discrimination in Letter Format

This article demonstrates a new methodological approach to recognize, analyze and write about discrimination against the buraku, which is one form of social discrimination in contemporary Japan. The structural discrimination proposed in this study is based on the concept of relational discrimination, which is derived from fundamental criticisms of the conventional concepts of material and psychological discrimination. Relational discrimination occurs when we are placed in a certain type of relationship and may become accomplices to discrimination or cause it, regardless of whether or not there is any individual prejudice or discriminatory consciousness at work. From this perspective, this article tries to fundamentally re-examine the binary thinking assumed in conventional sociology that there are minorities (those who are discriminated against) and majorities (those who discriminate against the minority). I focus on the complex ways of being human, and in particular on the transformations that accompany changes in particular relations such as from a person who does not discriminate to one who discriminates against others; from a person who is discriminated against to one who discriminates against others and from a person who is not discriminated against to one who is discriminated against. By focusing on the meaning of the deep suffering of a man who made discriminatory remarks to people living in a buraku community, and of a woman who married into a family living in a buraku community, I try to understand life ethics for people who discriminate and who at the same time are discriminated against.     

Rethinking Gentrification and the Right to the City: The Process and Effect of the Urban Social Movement against Redevelopment in Tokyo

This article focuses on the anti‐redevelopment movement in Shimokitazawa, an area adjacent to the central Tokyo metropolitan area, to analyze resistance to the gentrification‐like phenomenons in Japan. In recent years there has been an increase in the number of international comparative studies on gentrification, and an inductive analysis based on an understanding of the various contexts of each city is needed. This article takes on this task, referring to the key concept of the right to the city, which has been used as a framework for understanding anti‐gentrification movements. In doing so, I aim to reveal the bias in existing gentrification research. In Shimokitazawa the rights to enjoy the culture of the city and the rights to speak out about the state of the city were newly recognized. The evolving debate on this area shows that these rights should be widely shared not only by landowners and residents but also by visitors. However, these rights are not adequately captured by existing conceptions of the right to the city. Shimokitazawa's anti‐gentrification movement provides an opportunity to participate in an autonomous movement. Notably, the opposition movement has been using its newly acquired voice to create alternative public spaces. The emerging trend of urban social movements that recognize and bring to light the potential value of urban space offers insights for guidelines for the future development of urban society.     

Young People’s Reactions Change Elderly People’s Generativity and Narratives: The Effects of Intergenerational Interaction on the Elderly

The aim of this study was to investigate the effect of the young listener’s reaction on the development of generativity and narratives of elderly people. Thirty-four males between the ages of 60 and 82 participated in this experiment in which the listener generations (young/elderly) and listener reactions (empathic/neutral) were controlled. The participants shared and taught their wisdom gained from their past experiences through narratives. Results showed that many elderly people spoke about “lessons from experiences of failure” when there was an empathic reaction from young people, and such narratives were promoted by an increase of generativity. These results suggested the impact of the younger people’s reaction on the elderly people’s psychological development and behavior.     

Intergenerational interaction between old and young in creative task

By comparing intergenerational to same-generation interactions in creative activities, we aimed to reveal characteristic behaviors of older and younger adults in intergenerational interactions using a wooden block task. Four categories (“Proposal request”, “New proposal”, “Reactions to proposal”, “Assessments of partner’s behavior”) were extracted from conversations during task performance. In intergenerational groups, the ratio of utterances of “Proposal request” (encouraging a new proposal to partner) were higher than in same-generation groups for older adults. In intergenerational groups, older people assumed the role of encouraging younger people to suggest new ideas, and older people’s such empathic behaviors might provoke lively arguments.     

Phenological studies on the wing dimorphism of a semi-aquatic bug,Microvelia douglasi (Heteroptera: Veliidae)

Summary Seasonal changes in the percentage of macropterous individuals in natural population ofMicrovelia douglasi in permanent habitats were investigated in Shimane, western part of Japan. Macropterous forms of 5th instar nymphs occurred most frequently from late June to early July. However, the seasonal appearance of macropterous adults differed between habitats and years. There were significant effects of density, temperature, photoperiod and food availability on the percentage of macropters under laboratory conditions. The percentage of macropterous forms generally increased with density, but the mode of the response was modified by temperature, photoperiod and food availability. When insects were reared under long day photperiod (16L8D) with abundant food (0.5–1.0 g/container/day), the percentage of macroptery varied most among the different density treatments at the intermediate temperature (24°C) and the difference was reduced at higher temperature (28° and 32°C). Effects of temperature were small under the short day photoperiod (12L12D). Under 12L12D photoperiod sensitivity of density responses were higher at 32°C and lower at 24°C than those under 15L8D photoperiod. When the insects were supplied with food every other day, the density response became obscure. Ecological significance of environmental responses in the wing morph determination was discussed in relation to the heterogeneous environment of water surface.