굴착 주변의 지반침하 예측

김교신,류제천,김송만,박춘수 충남대학교 산업기술연구소 2000 산업기술연구논문집 Vol.15 No.2

Ground settlement and displacements of support structures due to deep excavation in urban area affect the stability of adjacent structures and retaining walls. Especially, the magnitude and distribution of ground settlements may directly give effects on the behavior of adjacent structures. So it comes to be important to judge precisely the effects on adjacent grounds and structures due to excavation. This can be achieved by means of ground settlements and differential settlements of structures, but present evaluating method on the ground settlement neglect the presence of adjacent structures. In this study, I have made Bowles and Bauer Method programs in order to find adjacent ground settlements. The results of program are like these. First, when you use measured horizontal displacement, the ratio of settlements of Bowles Method programs to Bauer is 0.86. Secondly, when you use measured horizontal displacement, settlements which Bowles Method program find is 5 times larger than settlements which Bauer Method program find when you use evaluated horizontal displacement.

국내 설계시공일괄사업에서 Fast-Track 적용결정 모델 : S월드컵주경기장 사례분석을 중심으로

조규만,현창택,구교진 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1

The Fast Track is the Method for accelerating schedule through the activities that are normally done in series are done in parallel. But it should not have been effective in Public construction, because the owner did not have confidence to success the fast track project. so, this study proposes the model selecting the project that is more effective to apply fast track. The model is made up two factors; one is owner's organization and the other is each project's characteristics. The use of these model enable owner to provide the Guide Line of the rational making decision.

HS-SPME-GC/MS 방법을 이용한 실크벽지 원자재의 TVOCs 기여도 평가

정탁교,장미옥,김만구 강원대학교 부속 환경연구소 2005 Journal of the Environment Vol.2 No.-

The contributions of the TVOC toluene-equivalent emission of raw materials was investigated for PVC wallpaper. A Headspace of each raw material were concentrated by solid-phase microextraction (SPME) and analysed by GC/MS. Static headspace of PVC wallpaper was generated in the 22ml of glass vial at 25℃ and sampled by using a 75 um thickness of carboxen-polydimethylsiloxanfiber. The typical VOCs are oilic peaks eluted between n-decane and n-hexadecane, and carbonyl compound, 2-butanone, n-hexanal, 2-ethyl-hexanol, 4-tetradecanal, hecanoic acid and aromatic compounds, toluene, m,p-xylene, styrene, Dileunt showed the highest contribution to TVOC emission of 0.52, and plasticizer was 0.20, and resin stabilizer showed 0.14. the improvement of these raw material was recommended in odor to reduce TVOC emission of PVC wallpaper.

全般管理者로서 中間管理者의 役割 定立과 課題

崔敎元,崔永萬,宋京用 東新大學校 1998 論文集 Vol.10 No.-

In today's enterprises, the complexity and enlargement of the field of the work has led the organization to be specialized, and it makes the communication and the unity more difficult between the posts. Furthermore, the overflowing of informations and knowledges, which is caused by the sudden change of the industrial society, has had an important and direct affect to the manager's behavior and decision. We can see the importance of the middle manager's position in that (1) he has to harmonize not between the top manager and workers so much as between the other middle managers accomplishing their other parts. (2) he has to exchange and hold in common the other part's information and knowledge in the process of the harmonization. (3) he has to make a diagnose and develope the plan for the solution of it, as an organization integrator. In addition to these, the middle manager's job requires the persuading, negotiating, and adjusting skill for other people's action. Therefore, this study is based on the recognition that middle manager's role becomes significant in accordance with the management specialization and it is made so that the relations of the middle manager's role, function, responsibility, and authority may be clear and the middle manager's role be built up concretely as a coordinator and negotiator, linking the upper part with the lower part, not as a mere supervisor. But the responsibility and duty of this class is really unclean. The unbalance between its responsibility and authority gives rise to many problems. The condition of the middle manager is risky, which is caused by the change of the organization This ultimately acts as a cause of impediment and gives a serious effect on the growth of enterprises. So the key manipulating the effectiveness of the organization is correcting the role and function of the middle manager, not only as the bridge of the top management and the lower management but also as a responsible person who contributes to the development of the enterprise with the subordernite's ability concentrated.

국내 공공부문 설계시공일괄입찰방식의 낙찰자 선정방법 개선에 관한 연구

김만철,서용철,구교진,현창택 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1

Design-Build is considered as the project delivery system to manage construction process more efficiently than design-bid-build. So Korea government has encouraged Design-Build in public sector. But single selection method of weighted criteria doesn't provide the greatest value to owner. Therefore, there is a need to improve selection method to meet owner's needs and project characteristics. This study proposes four types of selection method. Each of selection method is focused on price, qualification, time. The use of these selection methods enable owner to provide the greatest value.

한국 벤처기업의 성공요인에 관한 탐색적 연구

최만기,신진교,남준호 계명대학교 산업경영연구소 2000 經營經濟 Vol.33 No.1

지체장애인의 운동 참가 수준이 신체적 자기개념에 미치는 영향

구교만,김경숙,안동영 한국스포츠리서치 2005 한국 스포츠 리서치 Vol.16 No.2

The purpose of this study was to effect of sport participation level on physical self-concept of physical disabilities. The subjects of this study were selected by the stratified random cluster sampling method from physical disabilities corporation. welfare facilities. welfare center in Seoul or Kyonggydo. The data for this study are collected from 176 questionnaires which are answered by the disabled. The questionnaires of this study were used PSDQ(Physical Self-Description Questionnaire) invented by Marth & Richards(1991). which were translated by Yong-kuk Kim. The statistical methods utilized in this study for analyzing the collected data were descriptive statistics, analysis of variance, multiple correlation analysis, one-way ANOVA. From the analyses of data, this study reached following conclusions: Firstly. physical self-concept of physical disabilities were different along with intensive sport participation. Secondly. physical self-concept of physical disabilities were different along with long sport participation.

노인의 과거 여가활동 경험이 현재 여가심화에 미치는 영향 : Godbey의 여가정의에 따른 접근 approach of godbey's leisure definition

구교만,이은석 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

This study aims at investigating the influence of past leisure activty a experience on present leisure deepening of the old. Specifically, this study aims at investigating the influence of non-participation, irregularty participation and regularity participation in past leisure activities of older adults on present leisure deepening stage from the Godbey's leisure definition. This study Were used quality research method. The subjects of this study was selected by purposeful sampling method from the non-participants and participants in leisure activities 2004 residing in Seoul area. They m re above 65 year old. The using 8 data for approach quality method. The analysis methods utilized constant comparative method form case record analysis and inductive categorical system). From the analyses of the data, this study reaches the following conclusions: Firstly, the non-participation in past leisure activities influence on present leisure deepening stage. In groups of non-participation, past leisure activities were leisure deepening stage into leisure as time. Secondly, the irregularity participation in past leisure activities influence on present leisure deepening stage. [n groups of irregularity participation past leisure activities were leisure deepening stage into a part of leisure as activity and pleasure to pursue. Thirdly, the regularity participation in past leisure activities influence on present leisure deepening stage. In groups of regularity participation past leisure activities were leisure deepening stage into value of existence definition.

골프지도자의 리더쉽 유형이 선수의 자기실현에 미치는 영향

구교만 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

The purpose of this study is to examine the influence of Leadership Style on the self-fulfillment of golf player. For accomplishing these purposes, the 198 subjects were selected using the multi-stage stratified cluster sampling method from the high school students and University-student in driving ranges and golf Seoul in 2003. The data for the study were collected through the survey questionnaire. For the data of For the data of coaching style, K Leadership Scale for Sports(LSS) developed by Chelladuria & Saleh(1987) and standardized in Korean language by Kim(1989). and for the data of Self-fulfillment Questionnaire developed and standardized in Korean language by Min(1986) were used. The statistical methods utilized in this study for analyzing the collected data were reliability analysis, descriptive statistics, standard multiple regression analysis. From the analysis of the data, the conclusions of the study were obtained as follows; First, Leadership Style of golf influence a part on the ability arising of golf player. Second, Leadership Style of golf influence a part on the ability development of golf player. Third, Leadership Style of golf influence a part on the realization goal of golf player.

치과 임플란트용 순 Ti의 접촉부식 거동

김교한,허만수,김형일,황운석,高田 雄京,奧野 攻 대한치과기재학회 1999 대한치과재료학회지 Vol.26 No.4

One of the fields in which titanium(Ti) is becoming increasingly valuable is the field of biomaterials. Ti had shown its good corrosion resistance, high strength to weight ratio, and compatibility with human tissues. Such applications of Ti in this area involve replacing stainless steel and cobalt-chromium alloy implant which are used in skull, shoulder joint, spine, and dental implant. In dental field, titanium has been used as dental implant, so it becomes necessary to examine and estimate the anti-corrosion ability of Ti and its alloys at the severe conditions such as crevice corrosion and galvanic corrosion. The purposes of this study was to examine the corrosion mechanisms of the pure Ti showing good corrosion resistance under an oral corrosion environment when it is coupled with dental casting Type Ⅱ and Type Ⅳ gold alloys. These coupling corrosion mechanisms were studied in three conditions. First was by measuring the resting potential of pure Ti, when it was uncoupled and coupled with Type Ⅱ and Type Ⅳ alloys. Second was by measuring anode polarization behavior of pure Ti, Type Ⅱ and Type Ⅳ alloys, and third was by detecting dissolved ions from the pure Ti, uncoupled and coupled with Type Ⅱ and Type Ⅳ gold alloys which were immersed in 0.9% NaCl solution for 7 days. The resting potential showed a low potential value at the initial stage but increasing into a high value (to 0.18 V) with time elapse and reached a stable value. On the contrary, the potentials of Type Ⅱ and Type Ⅳ gold alloys were in their values at the initial stage of immersion, then decreased with the time and reached stable values, being higher than the value of pure Ti. When pure Ti coupled with Type Ⅱ and Type Ⅳ gold alloys, the resting potential of coupled one was between the values of each one. When Type Ⅱ and Type Ⅳ gold alloys were coupled with pure Ti, there was an increase in Ag, Cu, and Zn. Also, Zn ions released the high potential precious metal alloys, compared to the uncoupled case. Ti ion was not detected at any cases of pure Ti or coupled with gold alloys. It was thought that one of the causes of the increase in Ag, Zn, and Cu ions when Ti was coupled with dental gold alloys was that Ag, Zn, and Cu ions were selectively dissoluted from the Ag rich regions around grain boundary and the casting defects. In conclusions, the results of this study suggest that the pure Ti was very stable when coupled with the gold alloys in oral cavity.