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전력계통의 고조파 실태조사를 위한 설문서 설계에 관한 연구
최규하,신중린,임한석 建國大學校 附設 産業技術硏究所 1993 논문집 Vol.18 No.-
A design of survey form is studied for the investigations of technical aspects and/or social effects caused by harmonics on the electric power system of Korea. The survey form is aimed to have the function of investigation for the current status of harmonics problems on the power system, as well as the function of giving further understanding of the problems to the field engineers and customers in related sphere. The proposed survey form will give some contribution to build up nation-wide countermeasures to the harmonics problems.
A Study on Technophobia and Mobile Device Design
Joong Gyu Ha,Tom Page,Gisli Thorsteinsson 한국콘텐츠학회 2011 International Journal of Contents Vol.7 No.2
Technophobia is described as the ‘abnormal fear or anxiety about the effects of advanced technology’, affecting one third of the population, causing health problems and the inability to work efficiently. The development of the mobile phone, both in its design process and its following socioeconomic success, has a prominent effect on our society in general; this point will be explicated in this paper. The negative effects of these developments have also been assessed with questionnaire-based interviews, focus groups and media analysis in order to focus on those who are most susceptible to the effects of technophobia, to discover the possible causes and to develop a solution for overcoming the phobia. The findings of the literature review and empirical research have been debated; the results proved inconclusive. All age and sex and groups displayed levels of anxiety around technology. Therefore, designers cannot afford to abandon these individuals in the future, and attention should be directed into inclusive product design. Therefore, various solutions have been suggested for support for these sufferers, such as tuition and bespoke, ‘built to specification’ mobile phones
Ha, Joong Gyu,Li, Lan,Lee, Dong heon,Na, Sung hun,Ha, Kwon Soo,Kim, Young-Myeong,Ko, Jung Hwa,Hwang, Jong Yun SAGE Publications 2015 REPRODUCTIVE SCIENCES Vol.22 No.12
<P><B>Objective:</B></P><P>Abnormal spiral artery remodeling during early pregnancy leads to preeclampsia. The proliferation and invasion of trophoblasts in pregnancy are important for spiral artery remodeling. This study examined whether heme oxygenase (HO) by-products (carbon monoxide biliverdin, and iron) play roles in regulating the restoration of proliferation and invasion of human umbilical vein endothelial cells (HUVECs), HTR-8/SV-neo cells originating from first-trimester trophoblasts, 3A(tPA 30-1) obtained from term trophoblasts, and human endometrial stromal cells (HESCs) inhibited by zinc protoporphyrin IX (Znpp-9).</P><P><B>Study Design:</B></P><P>We explored whether HO by-products restored the proliferation and invasion of HUVECs, HTR-8/SVneo cells, 3A(tPA 30-1) cells, and HESCs inhibited by Znpp-9 depending on the oxygen concentration.</P><P><B>Results:</B></P><P>Bilirubin promoted proliferation of HUVECs, HTR-8/SVneo cells, 3A(tPA-30-1) cells, and HESCs under both hypoxic and normoxic conditions. Biliverdin also promoted invasion of HUVECs, HTR-8/SVneo cells, 3A(tPA30-1) cells, and HESCs under both hypoxic and normoxic conditions. Carbon monoxide-releasing molecule 2 promoted the proliferation and invasion of specific cell types depending on the oxygen concentration.</P><P><B>Conclusion:</B></P><P>Our data suggest that HO by-products differentially stimulate the proliferation and invasion of cells involved in pregnancy maintenance. When HO by-products are considered to be stimulants during the invasion and proliferation of such cells, both target cells and the gestational period should be considered.</P>
A Study on Technophobia and Mobile Device Design
Ha, Joong-Gyu,Page, Tom,Thorsteinsson, Gisli The Korea Contents Association 2011 International Journal of Contents Vol.7 No.2
Technophobia is described as the 'abnormal fear or anxiety about the effects of advanced technology', affecting one third of the population, causing health problems and the inability to work efficiently. The development of the mobile phone, both in its design process and its following socioeconomic success, has a prominent effect on our society in general; this point will be explicated in this paper. The negative effects of these developments have also been assessed with questionnaire-based interviews, focus groups and media analysis in order to focus on those who are most susceptible to the effects of technophobia, to discover the possible causes and to develop a solution for overcoming the phobia. The findings of the literature review and empirical research have been debated; the results proved inconclusive. All age and sex and groups displayed levels of anxiety around technology. Therefore, designers cannot afford to abandon these individuals in the future, and attention should be directed into inclusive product design. Therefore, various solutions have been suggested for support for these sufferers, such as tuition and bespoke, 'built to specification' mobile phones.
하중규(Ha, Joong Gyu) 한국디자인지식학회 2014 디자인지식저널 Vol.29 No.-
최근 산업 디자인에서 관심의 촛점이 모아지고 있는 제품-사용자 인터페이스 연구가 활발히 진행되고 있으나, 제품 하드웨어에 표시되는 프로덕트 그래픽의 문제는 아직까지 선결 과제로 남아 있다. 따라서 본 연구에서는 제품과 사용자 사이에 발생하는 시각적 양립성을 사용자 중심으로 접근하였다. 본 연구는 제품과 사용자 사이에 발생히는 커뮤니케이션을 원활히 지원하는 제품 그래픽에 관하여 인간과 기기의 상호작용의 관점에서 고찰한 것이다. 사용자와 제품의 위계상에서 발생하는 관계적 특성과 그 반응에 중점하고 제품 그래픽과 관계된 사용자 형태와 가설들을 검토하기 위하여 국제표준기구와 국제전자위원회가 합동으로 제정한 제품 그래픽 표준안을 대상으로 사용자에게 수용되고 있는 반응적 특성을 분석하였다. 표준화에 의한 인터페이스의 확장과 통합화는 제품별 크기ㆍ형태ㆍ위치ㆍ용도ㆍ의미 등에 대한 규칙과 사용자의 시각경험에 대한 규칙이 통합됨을 알 수 있었는데, 이는 제품의 형식적 체제, 제품이 갖는 상징적, 내포적 표상체제의 결합에 따라 형성됨을 알 수 있었다. 이러한 과정을 통하여 사용자가 사용시에 느끼는 주관적인 식별성과 제품그래픽의 기능적 언어 속성이 사용자-제품 상호작용에 포함되야 하며 사용자 멘탈이 전제되어야 한다. Interface design is mainly focusing on Product-User Interface in Industrial Design, ignoring the general panel graphics, graphical symbols and product graphics of appliance. The study begins with discussing the compatibility of Product-User interface and reviewing various theories and issues on cognition structure, visual perception behavior theory. The paper aims to identify basic framework of product graphics in product design through the issue of Man-Machine interface. Product graphics have concluded the characteristics of components including a controls, visual displays, machine graphics, also the establishing factors have selected. In order to find out visual quality of product graphics, ISO/IEC graphical symbols was tested for considering of the users visual factor. This thesis aims at the more rational design with the consideration of product graphical symbols, it must plan user`s efficient improvement by the visual quality of the panel graphics. Based on the findings, proposes some guidelines for the quality-base product graphics in accordance with the correlations, factor in graphical symbols.