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Air-water-interface Discharge Simulations for Advanced Water Resource Utilization
Get PDFAir-water-interface discharge formation is associated with a vapor layer on the electrode surface. Understanding the water vapor plasma is crucial for their potential applications in advanced water resource utilization. This paper examines numerically the discharge dynamics and reacting chemistry of the gas-phase H2O plasmas using a time-dependent one-dimensional numerical simulation. The temporal- and spatial-evolutions of species concentrations activated by a pulsed dc voltage application (millisecond-scale duration) in a thin water vapor layer of three hundred μm are described. During a lower-density plasma is ignited, localized and shrunk in sub-microseconds, a broad range of neutral and ionic species are produced. In particular, ground-state atomic oxygen O(3P), atomic hydrogen H(1s), ground-state molecular oxygen O_2(X), molecular hydrogen H_2(X), hydroxyl radical OH(X) and cluster ions, for example H_O_7^+ and H_O_7^−. After the pulse termination, all excited and charged species immediately disappear, whereas the densities of hydrogen peroxide H_2O_2, hydroperoxyl HO_2, ozone O_3 and molecular singlet delta oxygen metastable O_2(a^1D) are even enhanced for sub-second time-scale.departmental bulletin pape
Globalization of Sake Market : Relationship between Japanese Sake Export and Overseas Production
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The Effects of Individual and Situational Factors on Self-learning Activities
Get PDFSelf-learning is one of the most typical activities of self-development. Although self-development has been regarded as a type of organizational citizenship behavior (OCB), it has rarely been examined in OCB literature. This study focuses on selflearning activities and empirically examines whether they are influenced by job satisfaction, stress, and life happiness. After a discussion on whether self-learning activities can be viewed as a form of OCB, the effects of these variables on various kinds of self-learning activities are analyzed using data collected from more than 30,000 workers. While the positive impacts of job satisfaction and life happiness are empirically revealed, as expected, a positive effect of stress on these activities is demonstrated, contrary to the hypothesis. Some discussion in response to the empirical results is also proposed.departmental bulletin pape
Alienation, Democracy and Christianity: A Reappraisal of the Political and Social Thought of A.D. Lindsay (2)
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U.S. Cases on Teachers' Right to Free Speech in the Classroom : U.S. Inferior Courts and State Courts, 2000-2017
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How Does Occupational Gender Equality Shift? : A Historical Analysis of Barbers and Beauticians in Japan, 1910-2010
Get PDFこの論文では、男女共同参画社会の実現に向けて、職業内の男女比がどのように変化するのかを検討する。事例として、理容師を典型的な男性中心職業と、美容師を女性中心職業とみなして取りあげる。2010年国勢調査によれば、理容師のうち女性は44.6％、美容師のうち男性は23.1％いた。しかし、国勢調査は1965 年まで、理容師と美容師を区別せず集計していたため、これまで理容師、美容師における男女比率の推移は未解明だった。そこで、この論文では理容師と美容師における男女別4グループの人数を推定し、1910年から2010年まで100年間の推移を検討する。分析の結果、理容師、美容師ともに1950年ごろから急増したことが分かった。美容師はその後も増えつづけたが、理容師は1970年ごろをピークに減少した。理容師における女性は、1940年ごろから増加し、1980年ごろがピークだった。美容師における男性は、 1980年ごろから増加し、現在も増えつづけている。このように、女性理容師と男性美容師では、増加時期やピークの有無で違いがあったが、どちらも職業における男女共同参画の成功例といえるだろう。こうした推定は、この論文ではじめて行なわれた。departmental bulletin pape
