Prime component-preservingly amphicheiral link with odd minimal crossing number

For every odd integer $c\ge 21$, we raise an example of a prime component-preservingly amphicheiral link with the minimal crossing number $c$. The link has two components, and consists of an unknot and a knot which is $(-)$-amphicheiral with odd minimal crossing number. We call the latter knot a {\it Stoimenow knot}. We also show that the Stoimenow knot is not invertible by the Alexander polynomials.Comment: 25 pages, 14 figure

Kdm6a欠失は炎症経路を活性化し、M2マクロファージ極性変化を誘導し、p53機能不全と協調して膀胱癌を発症する。

内容の要旨、審査の要旨広島大学(Hiroshima University)博士(医学)Doctor of Philosophy in Medical Sciencedoctora

Runoff Model for Flood Forecasting

The formation process of flood hydrograph in a river basin can be expressed by the combination of the conversion process from rainfall to runoff in divided sub-basins and the concentration process of the runoffs in a stream net. The objective of this paper is to develop a synthetic method of flood estimation based on such a concept. The tank model is employed for the conversion process and the modified time-area-concentration diagram for the concentration process. The hydrograph at the outlet of a basin is given by the convolution integral of the output from the tank model and the modified time-area-concentration diagram. The method of calculation of flood hydrographs is applied to five actual basins, and the values of parameters of the tank model are identified for each basin. After investigating the relation between the identified parameters and the geological features of the basins, several calculations on other basins are carried out for verification of the relation. Then, a synthetic method of flood estimation can be introduced for flood forecasting

生体活性チタン多孔体骨再建材料の新規開発

内容の要約広島大学(Hiroshima University)博士(歯学)Doctor of Philosophy in Dental Sciencedoctora

The Sentence-Final Particle de in the Okayama City Dialect

The current study examines the dialect of Okayama city, particularly the sentence-final particle de, which is analogous to the Japanese common language sentence-final particle yo. A comparison of de and yo revealed two main findings. First, similar to the Japanese common language, the basic meaning of de in the Okayama city dialect is to display mental manipulation and represent a gap in recognition. The particle de conveys different meanings based on its intonation: pronouncing de with a rising intonation indicates the compulsion of mental operation, while a falling tone indicates the delegation of mental operation. Second, in the Okayama city dialect, de can be used in different ways. It can be used to express something that is not apparent to the speaker or to refer to the display of a limited gap in recognition, and it does not require a reaction from the audience

Gender equality and women's pension rights in Japan.

In recent years, derived pensions for housewives have drawn criticisms in Japan as a gender bias for the male breadwinner/female homemaker households. Many prominent feminists support measures to remove or curtail these arrangements in favour of a gender neutral pension system. Nonetheless, it is an open question whether redressing gender assumptions in the pension system can help redressing another form of gender inequality, that is, gender gap in pensions and women's greater vulnerability to poverty in old age. The purpose of this study is to reconsider the 'women's pension problem' by unravelling the ways in which it is perceived and to reframe the policy issue so that the definition of the problem can better accommodate concerns about economic security in old age for women. Building on the insights of feminist scholarship on women's social citizenship, this study explores, firstly, why concerns about gender inequality in pension outcomes have failed to impinge on the political agenda as a primary problem to be tackled in Japan, despite increasing cries for gender equality in the nation, and secondly, what are the implications of this neglect for women's economic welfare in old age and gender equality in outcome. In so doing, published governmental documents, deliberations in the Diet and reports from key advisory committees are closely analysed in order to examine the changes and continuities of the 'women's pension problem'. In the latter part of the thesis, income statistics and pension simulations are used to explore the implications of recent pension reforms for women's equal pension rights and women's economic welfare in old age. The findings caution against the moves to remove or curtail derived benefits for dependent spouses as well as point to the need to distinguish gender neutralisation and assimilation to male gender model in the pursuit of greater gender equality