大学進学における学力の効果と出身階層

Using data from the Japanese Life Course Panel Survey(JLPS), this paper investigated the relationship between academic achievement, socioeconomic background and access to university in Japan. While the university entrance rate has drastically risen since 1990s, socioeconomic disparity in access to university has not necessarily decreased. On the other hand, the effect of academic achievement on access to university has significantly decreased during the same period. More detailed analysis revealed, however, the decline of academic achievement effect on whether to go on to university was found only for those with lower socioeconomic background. As a consequence, socioeconomic differences in the effect of academic achievement on access to university almost disappeared

「地域住民の仕事とくらしに関する調査」の概要と標本の特性

This paper describes the overview of “the Survey on Work and Life of Local Residents” conducted in Maebashi city and Tamamura town, Gunma Prefecture. For this survey, 2,000 individuals (25-54 years old) from 50 neighborhoods were selected using a stratified two-stage random sampling procedure. The survey was conducted from November 2017 to January 2018, and yielded 723 responses (the response rate was 36.2%). After describing the design and outline of the survey, this paper examines the characteristics of the sample through comparison with national population census data

Synthesis of Ordered Mesoporous Phenanthrenequinone-Carbon via ??-?? Interaction-Dependent Vapor Pressure for Rechargeable Batteries

The ??-?? interaction-dependent vapour pressure of phenanthrenequinone can be used to synthesize a phenanthrenequinone-confined ordered mesoporous carbon. Intimate contact between the insulating phenanthrenequinone and the conductive carbon framework improves the electrical conductivity. This enables a more complete redox reaction take place. The confinement of the phenanthrenequinone in the mesoporous carbon mitigates the diffusion of the dissolved phenanthrenequinone out of the mesoporous carbon, and improves cycling performance.close

ヴァルデマール・ジョルジュの「ローマ」 -両大戦間期美術批評における伊仏関係の一事例について

departmental bulletin pape

Water Diversion Capacity of Shallow Land Waste Repository Covered by Capillary Barrier of Soil

Abstract -Capillary barrier (CB) is a tilting soil layer system which is composed of a finer soil layer underlain by a coarser soil layer. Water infiltrating into soil is suspended just above an interface between the soil layers and diverted downward along the interface. Because of this diversion of infiltration water, the CB has been employed in a top cover of waste landfills and mining wastes to reduce water infiltration into the protected waste materials. Water flow downward along the interface accumulates gradually its mass of flow due to continuous infiltration from the soil surface, and, at some length along the interface, water percolates into the coarser soil layer. A horizontal distance from the beginning of water flow to this point of percolation is called a diversion length of the CB, and is one of important parameters in designing structural dimensions and configuration of the CB system and in selecting a suitable combination of the finer and coarser soils. Shallow land waste repository, in which the top CB and bottom CB are placed to reduce infiltration due to rainfall and to divert percolating water through the protected waste material respectively, is proposed to isolate effectively a hazardous waste material or a very low level radioactive waste. A laboratory soil box test was conducted to investigate and estimate the diversion length, and a trial embankment was constructed in the field to investigate performance of the CB in the shallow land waste repository. The diversion length can be estimated with a practical accuracy based on saturated and unsaturated hydraulic properties of soils employed in the CB, inclination of the interface and infiltration rate expected in the field. Field observation of soil water movement in the test embankment shows excellent and stable diversion of infiltration water in the CB system