• Title/Summary/Keyword: company

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Data Retention Time and Electrical Characteristics of Cell Transistor According to STI Materials in 90 nm DRAM

  • Shin, S.H.;Lee, S.H.;Kim, Y.S.;Heo, J.H.;Bae, D.I.;Hong, S.H.;Park, S.H.;Lee, J.W.;Lee, J.G.;Oh, J.H.;Kim, M.S.;Cho, C.H.;Chung, T.Y.;Kim, Ki-Nam
    • JSTS:Journal of Semiconductor Technology and Science
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    • v.3 no.2
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    • pp.69-75
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    • 2003

  • Cell transistor and data retention time characteristics were studied in 90 nm design rule 512M-bit DRAM, for the first time. And, the characteristics of cell transistor are investigated for different STI gap-fill materials. HDP oxide with high compressive stress increases the threshold voltage of cell transistor, whereas the P-SOG oxide with small stress decreases the threshold voltage of cell transistor. Stress between silicon and gap-fill oxide material is found to be the major cause of the shift of the cell transistor threshold voltage. If high stress material is used for STI gap fill, channel-doping concentration can be reduced, so that cell junction leakage current is decreased and data retention time is increased.

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A Study of Effect of Self-Leadership by College Student on Recognition of Opportunity on Establishment of Company and Will of Establishing Company: Centered on Mediated Effect of Entrepreneurship (대학생의 셀프리더십이 창업기회인식과 창업의지에 미치는 영향에 관한 연구: 기업가정신의 매개 효과를 중심으로)

  • Kang, Jae-Hac;Ha, Kyu-Soo
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.10 no.4
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    • pp.1-12
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    • 2015

  • Among leadership competence essential for start-up C.E.O, this study was to analyze the effect of self-leadership on recognition of opportunity on establishment of company and will of establishing company through the mediated effect of entrepreneurship. Under the atmosphere of encouraging the establishment of company led by the government, within the college curriculum, along with various education and events, the education about entrepreneurship is actively provided, and in academic fields, studies about entrepreneurship, recognition of opportunity on establishment of company, and will of establishing company are actively performed, while there is almost no study about correlation among self-leadership, recognition of opportunity on establishment of company and will of establishing company. Therefore, in this study, 320 questionnaires filled out by college students from four colleges in Seoul were verified and analyzed. As a result of analysis, at first, the self-leadership showed partially significant effect on entrepreneurship. Second, entrepreneurship showed partially significant effect on recognition of opportunity on establishment of company and will of establishing company. Third, the self-leadership showed partially significant effect on recognition of opportunity on establishment of company and will of establishing company. Fourth, regarded as the core of this study, in between self-leadership and recognition of opportunity on establishment of company, and in between self-leadership and will of establishing company, the mediate effect of entrepreneurship was shown. According to such outcome of study, in the curriculum design of college venture education to increase recognition of opportunity on establishment of company and will of establishing company, the education of entrepreneurship and active trial of self-leadership education are essential.

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