AuGe 액체금속 이온이 주입된 n-GaAs의 물성연구

강태원,이정주,김송강,홍치유,임재영,정관수,Kang, Tae-Won,Lee, Jeung-Ju,Kim, Song-Gang,Hong, Chi-Yhou,Leem, Jae-Young,Chung, Kwan-Soo 대한전자공학회 1989 전자공학회논문지 Vol. No.

액체금속이온원으로 부터 발생한 AuGe 이온빔을 GaAs기판에 주입시킨 후 이 시료의 표면성분과 구조를 AES(Auger electron spectroscopy), RHEED(reflection high energy electron diffraction), SEM(scanning electron microscopy) and EPMA(electron probe microanalysis)등으로 조사하였으며 AES depth profile 실험결과를 이체충돌에 의한 Monte Carlo simulation과 비교하였다. AuGe 이온이 주입된 시료를 AES, EPMA로 측정한 결과 As의 preferential스피터링이 나타났으며 300$^{circ}$C로 열처리하면 Ga과 outdiffusion되었다. 또한 측정한 Au와 Ge의 depth profile은 이체충돌에 의한 Monte Carlo simulation의 결과와 잘 일치하였다. The ion beam extracted from the AuGe liquid metal ion source was implanted into GaAs substrate. The surface composition and the structure of ion implanted samples were investigated by AES, RHEED, SEM and EPMA. The depth profiles measured by AES were compared with the results of Monte Carlo simulation based on the two-body collision. As the results of AuGe ion implantation the preferential sputtering of As were revealed by AES and EPMA, and the outdiffusion of Ga and Ge was investigated by 300$^{circ}C$ annealing. The Au and Ge depth profiles measured by AES agreed with the results of Monte Carlo simulation based on the two-body collision.

마이크로웨이브 열분해(熱分解)를 이용(利用)한 폐(廢) 폴리스티렌과 모터 오일 혼합물(混合物)로부터 고분자(高分子) 원료(原料) 물질(物質) 회수(回收)에 관한 연구(硏究)

강태원,Kang, Tae-Won 한국자원리싸이클링학회 2006 資源 리싸이클링 Vol.15 No.5

폐 폴리스티렌과 모터 오일의 혼합물로부터 마이크로웨이브 열분해를 이용하여 유용한 고분자 원료물질의 회수를 위한 연구를 수행하였다. 마이크로웨이브 반응기로 quartz tube를 사용하였으며 마이크로웨이브 흡수체로 실리콘 카바이드를 사용하였다. 공정 변수로 마이크로웨이브 입력 파워를 180에서 250 W까지 변화시켰으며, 마이크로웨이브 조사시간을 30분에서 1시간까지 변화시키며 실험하였다. 열분해를 통하여 얻어진 생성물을 GC/MS를 사용하여 분석한 결과 스티렌, 메틸 스티렌, 톨루엔, 그리고 에틸벤젠이 4개의 주요 회수 성분이었으며, 이 중 폴리스티렌으로부터 스티렌의 회수율은 약 50% 이었다. 열분해에 마이크로웨이브를 사용함으로써 일반 열분해 보다 훨씬 낮은 온도에서 열분해가 이루어졌다. A novel microwave-induced pyrolysis was used for the recovery of valuable products from waste polystyrene in motor oil. Quartz tube was introduced as microwave reactor and silicon carbide was used as the microwave absorbent. In the experiments, different pyrolysis conditions were applied, such as time range from 30 minutes to 1 hour and microwave input power range from 180 to 250W. The distillate products from pyrolysis were analyzed with GC/MS. Styrene, 1-methyl styrene, toluene, ethyl benzene were the four main products. Styrene recovery rate from polystyrene was around 50%. Temperature for the complete pyrolysis using microwave was around $300^{\circ}C$ which is much lower than that of conventional thermal pyrolysis.

폴리스티렌 수지(樹脂) 재활용(再活用) 기술(技術)의 특허(特許) 동향분석(動向分析)

강태원,정진기,이재천,강경석,Kang, Tae-Won,Jung, Jin-Ki,Lee, Jae-Chun,Kang, Kyung-Seok 한국자원리싸이클링학회 2005 資源 리싸이클링 Vol.14 No.5

폐 폴리스티렌 수지의 재활용에 대한 관련 기술의 추이 및 동향을 조사하기 위하여 특허 출원 검색을 시행하였다. 검색 범위는 공개 특허를 대상으로 하였으며 특허 검색 데이터베이스는 미국의 USPTO 및 DELPHION, 일본의 PAJ, 유럽의 EPO, 그리고 한국의 KIPPIS를 선정 조사하였다. 폴리스티렌 수지의 재활용 관련 키워드는 PS, polystyrene, 폴리스티렌, 스티로폼, 그리고 IPC 분류 중 B29B-017, C08J-011를 대상으로 하여 검색하여 총 534건을 선정하였으며 이를 1974년부터 2002년까지 년도 별, 미국, 일본등 주요 국가별, 주요 회사별, 그리고 관련 기술별로 분류하여 분석하였다. In this paper the world wide patents on the recycle of used polystyrene were inspected. The trends and directions of on going and future technologies on this matter were analyzed. The range of search was limited in the open patents and in DB of U.S.A.(USPTO, DELPHION), Japan(PAJ), Europe(EPO), and Korea(KIPRIS). For the search condition the keyword, polystyrene or PS, and IPC classification, B29-017 and C08J-011 were used. The total of 534 cases was selected and analyzed according to years, countries, companies, and technologies.

폐전지 재활용 관련 기술의 특허 동향분석

강태원,정진기,이재천,손정수,강경석,Kang Tae-Won,Jeong Jinki,Lee Jae-Chun,Sohn Jeong-Soo,Kang Kyung-Seok 한국자원리싸이클링학회 2005 資源 리싸이클링 Vol.14 No.6

폐 건전지의 재활용에 대한 관련 기술의 추이 및 동향을 조사하기 위하여 특허 출원 검색을 시행하였다. 검색 범위는 공개 특허를 대상으로 하였으며 특허 검색 데이터베이스는 미국의 USPTO 및 DELPHION, 일본의 PAJ,유럽의 EPO,그리고 한국의 KIPRIS를 선정 조사하였다. 폐전지 재활용 관련 키워드는 배터리, 전자 셀, 특허, 재활용, 그리고 IPC분류 중 H01M-006/52 및 H01M-010/54를 대상으로 검색하여 총 2,490건을 선정하였으며, 이를 2단계 필터링 과정을 거쳐 871건 선정하여 최증 분석하였다. 1971년부터 2000년까지 년도별, 주요 국가별, 주요 회사별, 그리고 관련 기술별로 분류하여 분석하였다. In this paper the world wide patents on the recycling of used batteries were inspected. The trend and direction of on-going and future technologies on this matter were analyzed. The range of search was limited in the open patents and in DB of U.S.A.(USPTO, DLPHION), Japan(PAJ), Europe(EPO), and Korea(KIPRIS). For the search condition the keyword, battery, batteries, electric cell, patent, and recycling, and IPC classification were used. The total of 2,490 cases was found at the first search stage, then, through the 2 steps of filtering processes the total of 871 cases was selected for the final analysis. These 871 cases were classified by countries, companies, and technologies between the year 1971 and the you 2000.

Ziegler-Nichols와 Cohen-Coon 제어 이론의 실습을 위한 자동 유량제어 시스템의 구축

강태원,이호균,Kang, Tae-Won,Lee, Ho-Gyun 한국공학교육학회 2017 공학교육연구 Vol.20 No.4

Automatic flow control system composed by hardware and software was designed and fabricated to be used as teaching tool of feedback control theory in university experimental class. This system includes hardwares like data acquisition board, flow measuring device, transmitters, and the pneumatic valve, and software like LabView program for the monitoring and control of flow rates. The system was designed as the student can see the control effect of not only set point but also disturbance changes. Also the LabView program was composed for the calculation of controller parameters of both Ziegler-Nichols and Cohen-Coon tuning. The students can apply both tuning constants and compare the control performances. This system will provide the easy way for the students to understand the function and specification of control hardwares, and to raise the programing ability of control software.

Yolo를 이용한 헬멧 착용 탐지 방법

강태원(Kang Tae-Won),민장규(Min Jang Kyu),민평홍(Min Pyeong Hong),박장식(Park Jang Sik),정준호(Junho Jeong),오승민,김가영(Gayoung Kim) 대한전자공학회 2020 대한전자공학회 학술대회 Vol.2020 No.8

표피 낭종과 동반된 멜라닌 세포 모반

강태원 ( Tae Won Kang ),김유찬 ( You Chan Kim ),유욱 ( Wook Lew ) 대한피부과학회 2007 대한피부과학회지 Vol.45 No.8

Nevus with a cyst is characterized by a melanocytic nevus that is closely associated anatomically with an epidermal cyst. It is important to recognize this common benign condition because the growth of these lesions is sometimes misinterpreted by the patient and clinicians as presenting either a new melanoma or malignant transformation of a preexisting lesion. We report a case of intradermal melanocytic nevus associated with an epidermal cyst which developed in a 68-year-old man. (Korean J Dermatol 2007;45(8):844∼846)

자치단체장의 변혁적 리더십이 구성원의 임파워먼트와 창의성에 미치는 영향

강태원(Kang, Tae-Won),박대운(Park, Dae-Un) 대한검도학회 2018 대한검도학회지 Vol.29 No.1

본 연구의 목적은 공무원의 임파워먼트를 개인차원의 임파워먼트와 집단차원의 임파워먼트, 그리고 공무원의 창의성을 개인차원의 창의성과 집단차원의 창의성으로 분류 관계검증을 하는데 있다. 자치단체장의 변혁적 리더십과 임파워먼트 및 창의성의 관계를 검증한 결과는 다음과 같다. 첫째, 변혁적 리더십과 임파워먼트와의 관계를 알아보기 위하여 “변혁적 리더십은 임파워먼트에 영향을 미칠 것이다”라는 명제를 검증하였다. 검증결과 개인차원의 임파워먼트에 영향을 미치는 변혁적 리더십 요인은 카리스마 요인과 지적 자극 요인이었으며, 모두 긍정적인(+) 영향을 미치는 것으로 분석되었다. 지적 자극 요인이 가장 큰 영향을 주는 것으로 분석되었으며, 카리스마 요인 또한 영향을 주는 것으로 분석되었다. 반면에 개별적 배려 요인과 분발 고취 요인은 개인차원의 임파워먼트에 영향을 주지 않는 것으로 분석되었다. 또한 집단차원의 임파워먼트에 영향을 미치는 변혁적 리더십 요인은 지적 자극 요인과 분발 고취요인이었으며, 모두 긍정적인(+) 영향을 미치는 것으로 분석되었다. 지적 자극 요인이 가장 큰 영향을 주는 것으로 분석되었으며, 분발 고취 요인 또한 영향을 주는 것으로 분석되었다. 반면에 카리스마 요인과 개별적 배려 요인은 집단차원의 임파워먼트에 영향을 주지 않는 것으로 분석되었다. 둘째, 변혁적 리더십과 창의성과의 관계를 알아보기 위하여 “변혁적 리더십은 창의성에 영향을 미칠 것이다”라는 명제를 검증하였다. 검증결과 개인차원의 창의성에 영향을 미치는 변혁적 리더십 요인은 개별적 배려 요인과 분발고취 요인으로 분석되었으며, 모두 긍정적인(+) 영향을 미치는 것을 분석되었다. 개별적 배려 요인이 가장 큰 영향을 주는 것으로 분석되었으며, 분발 고취 요인 또한 영향을 주는 것으로 분석되었다. 반면에 카리스마 요인과 지적 자극 요인은 개인차원의 창의성에 영향을 주지 않는 것으로 분석되었다. 또한 집단차원의 창의성에 영향을 미치는 변혁적 리더십 요인은 카리스마 요인, 개별적 배려 요인, 그리고 분발 고취 요인으로 분석되었으며, 모두 긍정적인(+) 영향을 미치는 것으로 분석되었다. 분발 고취 요인이 가장 큰 영향을 주는 것으로 분석되었으며, 다음으로 개별적 배려 요인과 카리스마 요인의 순으로 영향을 주는 것으로 분석되었다. 반면에 지적 자극 요인은 집단차원의 창의성에 영향을 주지 않는 것으로 나타났다. Modern organizations are required to implement organizational development and renovation in order to become competitive ones, and then to survive and adapt themselves to uncertainties and rapidly changing social environment. In addition, members of organizations are required to change as well, because they are the most important assets that constitute organizations and contribute to the development of organizations. As the concept of competitive advantage with empowerment and creativity of organizational members among increased uncertainties has been defined, the importance of human resources has been emphasized. In other words, The importance of leadership exercised by an organization"s leader and empowerment and creativity of its members is rising. Studies have been actively progressing about transformational leadership, which has influence on empowerment and creativity. That is because transformational leadership presents vision in order for members of an organization to have hopes and dreams, and exercises influence to achieve enhanced performance of an organization and satisfy individual desires by inducing members to change their sense of values through individual consideration and intellectual stimulation. The purpose of this thesis is to examine the influence of the transformational leadership of a city mayor on empowerment and creativity of its members. Through such an examination, the transformational leadership, which has a positive effect on empowerment and creativity of an organization for its development, will be recognized. The extent of this thesis is limited to transformational leadership, and empowerment and creativity. Transformational leadership was chosen as an independent variable and empowerment and creativity were selected as dependent variable. Four factors such as charisma, individual consideration, intellectual stimulation and inspiration were selected as sub-factors of transformational leadership. Self-empowerment and group-empowerment were selected as sub-factors of empowerment. Four factors including meaning, competence, self-determination and impact were selected as major elements of self-empowerment in accordance with a definition of empowerment, later used by Spreitzer(1995), while such four factors as team potency, team meaningfulness, team autonomy and team impact were selected as main elements of group-empowerment based on the theory of Kirkman & Rosen(1999). Self-creativity and group-creativity were selected as sub-factors of creativity. Three factors including originality, fluency and flexibility were selected as prime elements of self-creativity based on a theory of Guilford(1984). A group"s idea-inducing capability and problem solving ability were selected as important elements of group-creativity on the basis of a theory of Siegel & Kaemmerer(1978). Considering the limitation associated with a methodology for the study, the object of the study for achieving its purpose was restricted to 1,000 civil servants of grade 5 and lower working in three cities in Chungcheongbuk-do out of the nation"s 234 basic local governments. 739 among the object of 1,000 civil servants answered to the questionnaire and 707 questionnaires were analyzed after excluding unreliable ones drawn up by unfaithful respondents. The result of examining relationships between a city mayor and empowerment and creativity of its members is as follows: First, factors of transformational leadership which exert a positive effect on self-empowerment were identified as charisma and intellectual stimulation. Second, factors of transformational leadership which exert a positive effect on group-empowerment were identified as intellectual stimulation and inspiration. Third, factors of transformational leadership which exert a positive effect on self-creativity were identified as individual consideration and inspiration. Fourth, factors of transformational leade

후경부 섬유종

강태원 ( Tae Won Kang ),이상은 ( Sang Eun Lee ),김수찬 ( Soo Chan Kim ) 대한피부과학회 2007 대한피부과학회지 Vol.45 No.2

Nuchal fibromas are rare, benign fibrous proliferations characterized by hypocellular dense collagen in the dermis and the subcutaneous fat layer. Nuchal fibromas usually develop in the posterior neck as a solitary, soft tissue mass. Herein, we report a case of a nuchal fibroma presenting on the posterior neck of a 60-year-old male. An excisional biopsy was done and showed haphazardly-arranged, dense collagen infiltration throughout the dermis and the subcutaneous fat layer. Moreover, fat lobules, adnexas and nerve fibers were entrapped by collagen bundle infiltrations. Dermatologists should include nuchal fibrma in the differential diagnosis of patients with a posterior neck mass. (Korean J Dermatol 2007;45(2):168~170)

중소‧중견기업 조직 구성원의 자기효능감이 직무성과에 미치는 영향

강태원(Tae-Won Kang),이용기(Yong-Ki Lee),이용숙(Yong-Suk Lee) 한국창업학회 2018 한국창업학회 Conferences Vol.2018 No.2

본 연구의 목적은 중소 중견기업 조직 구성원의 자기효능감이 직무성과에 미치는 영향을 분석하고 이들 관계에서 직무열의의 매개역할을 검증하기 위한 것이다. The purpose of this study is to analyze the impact of self-efficacy of small and medium-sized enterprises members on the job performance , and to verify the mediating role of job engagement in these relationships. For this purpose, we surveyed 370 members of SMEs and used 330 valid questionnaires for empirical analysis. Self-efficacy was measured as three sub-dimensions of self-confidence, self-control efficacy, and task difficulty preference. As a result of the analysis, all three sub-dimensions showed significant positive effects on job engagement, and self-confidence and self-control efficacy directly affect job performance. In addition, job engagement played a mediating role in the relationship between self-efficacy and job performance. That is, self-confidence, self-control efficacy, partial mediation, and task difficulty preference were found to be full mediators.