肝癌, 數種의 肝疾患, 他臟器惡性腫瘍患者 및 新生兒 血淸 Alpha 1-Fetoprotein에 關한 硏究

高榮植,李浩鎔,李海宣,卞基洙,金道永,金鍾一,金永漢 仁川基督病院 1977 仁川基督病院誌 Vol.1 No.2

Conceptualizing and Researching Student Mobilities in East Asia

Kong Chong Ho(호콩총) 대구대학교 다문화사회정책연구소 2020 현대사회와 다문화 Vol.10 No.2

이 글의 목적은 “아시아의 대학 세계화와 국제학생이동성 연구” 사업의 일환으로 중국, 일본, 한국, 대만, 싱가포르 등 5개국의 9개 대학에서 지난 3년간 수집한 데이터를 바탕으로 아시아의 학생이동성을 개념화하기 위해 필요한 주요 이슈들을 논의하기 위함이다. 동아시아 학생이동성의 주요 이슈들을 정리하면 다음과 같다. 첫째, 동아시아 국제학생이동성을 이해하기 위해서는 대학을 둘러싼 정치적, 경제적 환경 변화를 이해해야 한다. 둘째, 이들 국가를 선택하는 유학생의 동기와 열망을 살펴보았다. 셋째, 국제학생 이동성이 일어나는 교육기관의 다양성을 감안한다. 끝으로 동아시아 국제학생이동성을 연구할 때 특별히 고려해야 할 몇 가지 사안을 제안하며 글을 마친다. 우선 유학생 당사자와 정부, 대학 관계자, 교육 브로커, 졸업생을 비롯한 다양한 학생 이동성 관련 주체들에 대한 연구가 필요하다. 또한 방법론적으로는 유학생이 본국-유학 목적국-제3국 등 여러 나라의 국경을 옮겨 다닐 가능성이 높기 때문에 글로벌 에스노그라피 기법을 통해 이주 주체를 심도 있게 연구하는 방법, 양적 연구방법과 질적 연구방법의 혼합, 국가별 비교연구를 실시하는 방법 등을 제안한다. The purpose of this paper is to highlight a data driven approach (from three year project which collected data from nine universities in five countries [China, Japan, South Korea, Taiwan and Singapore]) to discuss key issues related to conceptualizing and researching international higher education student mobilities to this region. These issues are the political and economic context in which universities operated, the motivations and aspirations of international students, the different organizations involved in driving and facilitating international student mobility, and considerations for an effective research design to study student mobility.

Conceptualizing and Researching Student Mobilities in East Asia

Ho Kong Chong 대구대학교 다문화사회정책연구소 2020 현대사회와 다문화 Vol.10 No.2

The purpose of this paper is to highlight a data driven approach (from three year project which collected data from nine universities in five countries [China, Japan, South Korea, Taiwan and Singapore]) to discuss key issues related to conceptualizing and researching international higher education student mobilities to this region. These issues are the political and economic context in which universities operated, the motivations and aspirations of international students, the different organizations involved in driving and facilitating international student mobility, and considerations for an effective research design to study student mobility.

One Response from the South : Singapore's Efforts at Developing Hub Functions

Kong Chong Ho 한국지역학회 1999 지역연구 Vol.15 No.2

As Asia becomes increasingly integrated economically, opportunity exists for major cities to host hub functions, particularly in managing financial flows, as bases to coordinate regional production networks, and as staging points for the penetration of new markets. The paper argues for a path-dependent logic to understanding the efforts of the Singapore State in hosting hub functions. As a city-state without a national economic hinterland, Singapore`s response to increasing business costs and regional competition has been to create a set of policies designed to encourage multinational companies to keep administrative control functions in Singapore while moving the more labour and land intensive production functions to nearby Malaysia and Indonesia. An understanding of the competition among cities in the Asia Pacific for hub functions must also take into account corporate strategy within particular industry dynamics. The second half of the paper provides a number of case studies to show this interplay between corporate strategy, industry dynamic and government policy.

Diagrammatic Analysis of Self-Induced Polarization Ellipes Rotation

Chung,Chong Sam,Cho,Chang Ho,Kong,Chang Sik 培材大學校 1985 論文集 Vol.7 No.-

자기유도(Self-induced) 편광타원축 회전을 분석하기 위하여, 광학적 비선형 상호작용의 밀도 연산자로 표현되는 Double-sided Feynman 도표 방법이 도입되어 주파수 의존도를 고려한 ?? (-ω,ω,ω,ω)가 유도하였다. Double-sided Feynman diagrams, which trace the evolution of the density operator in time during nonlinear optical interaction, are used to analyze the process of self-induced polarization ellipse rotation. Frequency dependence on ?? (-ω,ω,ω,-ω) of self-induced polarization ellipse rotation is studied.

Induction of the Glucose-regulated Proteins by Ca^(2+)-ATPase Inhibitors and Brefeldin A

Kang, Ho Sung,Park, Young Choul,Han, Song Iy,Kim, Byeong Gee,Kim, Chong-Rak,Lee, Kong-Joo,Kim, Han Do 부산대학교 기초과학연구소 1995 부산대학교 기초과학연구소 연구논문집 Vol.15 No.-

Glucose-regulated proteins (grp's) are a group of stress proteins whose syntheses are greatly enhanced when cells are exposed to stressful conditions including glucose stravation and Ca²^(+) ionophore which perturbs intracellular Ca²^(+) homeostasis. In this study, we examned the ability of endomembrane Ca²^(+)-ATPase inhibitors, thapsigargin, 2.5-di(tert-butyl)-1,4-hycroquinone and cyclopiazonic acid, and brefeldin A, an inhibitor of intracellular protein transport, as inducers of grp's. The treatment of either Ca²^(+)-ATPase inhibitors or brefeldin A markedly incresed the syntheses of grp's, whereas BAPTA-AM, a cell permeant Ca²^(+) chelator, did not induce the grp's. In addition, grp induction by Ca²^(+)-ATPase inhibitors was not inhibited by BAPTA-AM preloading which blocked increases in cytosolic Ca²^(+), resulting from Ca²^(+)-ATPase inhibitor treatment. Thus, these results indicate that grp expression is closely coupled to the depletion of the intracellular Ca²^(+) store as well as protein trafficking from the endoplasmic reticulum to Glogi.

Effect of Rootzone Mixed Amended with Crumb Rubber on the Physical Properties

She-Kong Chong(청쉬콩),Chang-Ho Ok(옥창호) 한국잡초학회·한국잔디학회 2006 Weed & Turfgrass Science Vol.20 No.1

본 연구는 폐 타이어를 미사질 토양에 혼합하여 경기장 식재층으로서의 질을 향상 시키고자 실시하였다. 특히 본 실험을 통해 토양에 혼합되는 폐 타이어의 입경 크기와 혼합량에 따라 식재층의 토양 물리적 특성을 측정하고자 하였다. 실험에서 두 종류의 토양 [Arenzville silt loam(coarse-silty, mixed, nonacid, mesic Typic Udifluvents), Hosmer silty clay loam(fine-silty, mixed, mesic Typic Fragiudalfs)]과 입경 크기(3.5, 6.5, 9.5㎜)에 따라 세 가지의 폐 타이어를 사용하였다. 각각 크기별 토양에 혼합된 폐 타이어의 혼합 비율은 0에서 0.4 gㆍg?¹ 사이였다. 각각의 처리구에 대한 실험 진행 및 물리성 조사는 미국 골프협회 Green Section Record의 기준 방법에 준해서 실시하였다. 본 실험의 결과 토양에 혼합된 폐 타이어의 비율이 증가 할수록 토양의 총 공극량은 감소하였다. 하지만 입경 크기와 상관없이 폐 타이어의 혼합량이 0.15 gㆍg?¹ 이하인 경우에는 대공극과 포화투수계수에 차이가 없었다. 반면 폐타이어가 0.15 gㆍg?¹ 이상으로 혼합된 토양은 대 공극, 포화 투수계수, 그리고 공기 투과율이 대조구에 비해 통계적으로 유의하게 개선되었다. This research was initiated to enhance the tilth of fine-textured soil for turf growth by incorporation of crumb rubber shredded from used tires. A specific objective was to determine the physical properties of soil mixed amended with different grade and amount of crumb rubber in soils. Two soils and three different grades(3.5, 6.5 and 9.5 ㎜) of crumb rubber were used. The soils selected were an Arenzville silt loam(coarse-silty, mixed, nonacid, mesic Typic Udifluvents) and a Hosmer silty clay loam(fine-silty, mixed, mesic Typic Fragiudalfs). The amount of crumb rubber mixed in soil ranged from 0 to 0.4 gㆍg?¹(using 0.05 gㆍg?¹) increments and 0 as a control. For each treatment, soil cores were constructed following the recommendation by the United States Golf Association Green Section Record. Results indicated that porosity of the mixed decreased as the amount of crumb rubber increased. Regardless of the grade of crumb rubber, mixes with less than 0.15 gㆍg?¹ of crumb rubber in fine-textured soil could not enhance their macro-porosity and hydraulic conductivity. However, as the amendment increased over 0.15 gㆍg?¹, the tilth of the mixes had improved significantly macro-porosity, hydraulic conductivity and air permeability, as compared with a control.

Induction of the Glucose-regulated Proteins by Ca^2+-ATPase Inhibitors and Brefeldin A

Kang, Ho Sung,Park, Young Chul,Han, Song Iy,Kim, Byeong Gee,Kim, Chong-Rak,Lee, Kong-Joo,Kim, Han Do 이화여자대학교 생명과학연구소 1995 생명과학연구논문집 Vol.6 No.-

Glucose-regulated proteins (grp's) are a group of stress proteins whose syntheses are greatly enhanced when cells are exposed to stressful conditions including glucose stravation and Ca^2+ ionophore which perturbs intracellular Ca^2+ homeostasis. In this study, we examined the ability of endomembrane Ca^2+ -ATPase inhibitors, thapsigargin, 2,5-di(tert-butyl)-1,4-hydroquinone and cyclopiazonic acid, and brefeldin A, an inhibitor of intracellular protein transport, as inducers of grp's. The treatment of either Ca^2+-ATPase inhibitors or brefeldin A markedly increased the syntheses of grp's, whereas BAPTA-AM, a cell permeant Ca2+ chelator, did not induce the grp's. In addition, grp induction by Ca^2+-ATPase inhibitors was not inhibited by BAPTA-AM preloading which blocked increases in cytosolic Ca^2+, resulting from Ca^2+-ATPase inhibitor treatment. Thus, these results indicate that grp expression is closely coupled to the depletion of the intracellular Ca^2+ store as well as protein trafficking from the endoplasmic reticulum to Golgi.

Effect of Rootzone Mixes Amended with Crumb Rubber on the Physical Properties

청쉬콩,옥창호,Chong, She-Kong,Ok, Chang-Ho Turfgrass Society of Korea 2006 한국잔디학회지 Vol.20 No.1

본 연구는 폐 타이어를 미사질 토양에 혼합하여 경기장 식재층으로서의 질을 향상 시키고자 실시하였다. 특히 본 실험을 통해 토양에 혼합되는 폐 타이어의 입경 크기와 혼합량에 따라 식재층의 토양 물리적 특성을 측정하고자 하였다. 실험에서 두 종류의 토양 [Arenzville silt loam(coarse-silty, mixed, nonacid, mesic Typic Udifluvents), Hosmer silty clay loam(fine-silty, mixed, mesic Typic Fragiudalfs)]과 입경 크기(3.5, 6.5, 9.5mm)에 따라 세 가지의 폐 타이어를 사용하였다. 각각 크기별 토양에 혼합된 폐 타이어의 혼합 비율은 0에서 0.4 $g{\cdot}g^{-1}$ 사이였다. 각각의 처리구에 대한 실험 진행 및 물리성 조사는 미국 골프협회 Green Section Record 의 기준 방법에 준해서 실시하였다. 본 실험의 결과 토양에 혼합된 폐 타이어의 비율이 증가 할수록 토양의 총 공극량은 감소하였다. 하지만 입경 크기와 상관없이 폐 타이어의 혼합량이 0.15 $g{\cdot}g^{-1}$ 이하인 경우에는 대공극과 포화투수계수에 차이가 없었다. 반면 폐타이어가 0.15 $g{\cdot}g^{-1}$ 이상으로 혼합된 토양은 대 공극, 포화 투수계수, 그리고 공기 투과율이 대조구에 비해 통계적으로 유의하게 개선되었다. This research was initiated to enhance the tilth of fine-textured soil for turf growth by incorporation of crumb rubber shredded from used tires. A specific objective was to determine the physical properties of soil mixes amended with different grade and amount of crumb rubber in soils. Two soils and three different grades(3.5, 6.5 and 9.5 mm) of crumb rubber were used. The soils selected were an Arenzville silt loam(coarse-silty, mixed, nonacid, mesic Typic Udifluvents) and a Hosmer silty clay loam(fine-silty, mixed, mesic Typic Fragiudalfs). The amount of crumb rubber mixed in soil ranged from 0 to 0.4 $g{\cdot}g^{-1}$(using 0.05 $g{\cdot}g^{-1}$) increments and 0 as a control. For each treatment, soil cores were constructed following the recommendation by the United States Golf Association Green Section Record. Results indicated that porosity of the mixes decreased as the amount of crumb rubber increased. Regardless of the grade of crumb rubber, mixes with less than 0.15 $g{\cdot}g^{-1}$ of crumb rubber in fine-textured soil could not enhance their macro-porosity and hydraulic conductivity. However, as the amendment increased over 0.15 $g{\cdot}g^{-1}$, the tilth of the mixes had improved significantly macro-porosity, hydraulic conductivity and air permeability, as compared with a control.

Applications of Irradiation to Polyethylene for Flame Retarded Wire and Cable Insulation

Young Kun Kong,Hoon Seun Chang,Chong Kwang Lee,Jae Ho Choi Korean Nuclear Society 1981 Nuclear Engineering and Technology Vol.13 No.4

고분자피복재 중 polyethylene은 전기적 절연성 및 내방사선성이 좋으나 난연성이 결여되어 있으므로 이 단점을 개질하였다. 방사선을 이용하여 polyethylene에 여러 종류의 난연제를 고착시켰는데 grafting 방법과 blending후 crosslinking 방법을 사용하였다. 일반적으로 grafting시키는 경우 시료에 난연제가 고착되는 량은 방사선선량이 증가할수록 증가하였다. Grafting 방법으로 polyethylene에 난연제를 고착시킬 때 시료를 팽윤(swelling)시켜서 난연제를 grafting시켜야 한다. Blending 한 후 crosslinking시킨 경우 시료와 난연제의 량을 자유롭게 조절하여 blending하여 crosslinking시킬 수 있는 이질이 있다. 난연제를 고착시키는 2가지 방법중 blending후 crosslinking 시키는 방법이 가장 바람직하다. The properties of polyethylene materials exhibit good insulation and radiation resistance, but exhibit poor flame resistance. Flame retardant properties of the polyethylene were improved by the radiation induced grafting or crosslinking. When the various flame retardants were fixed onto polyethylene, the amount of fixation in grafting was increased with the increase of radiation dosages. In the case of grafting, it is necessary for high grafting yield that the polyethylene films were swelled before irradiation with ${\gamma}$-rays or electron beams. It is the suitable method for the fixation of flame retardant that polyethylene samples were blended with various flame retardants at 1$25^{\circ}C$ and then blended polymers were crosslinked by the electron beams at room temperature.