승용차용 알루미늄 합금 휠의 진동특성에 관한 실험적 연구

金秉三,홍동표 全北大學校 1993 論文集 Vol.36 No.-

Vibration characteristics of a wheel play an important role to judge a ride comfortability and quality for a passenger car. In this study, the vibration characteristics of al-alloy and steel wheel for passenger car are studied. Natural frequency, damping and mode shape are determined experimentally by frequency response function. Results show that wheel material property, size and design are parameter for shift of natural frequency and damping.

IR 레이저를 이용한 COG 접합 공정 개발을 위한 실험적 연구

김주한,송춘삼,김종형,장동영 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-

A novel method for bonding COG chips on the substrate with IR laser irradiation is presented. The laser process for COG chip packaging has many advantages such as minimized heat affected zone, various bonding materials, selective bonding, and 3D packaging, In order to develop COG. chip bonding, an experimental study for a COG substrate with laser irradiation was performed. Various results could be obtained with respect to ablated or melted shapes of the metal lands, Successful melting of a land on COG substrate was realized on a range of 16.8 W/cm². Within this power density range, a constant result of bonding was shown. We can expect that this result can be applied for a COG bump-to-bump direct bonding process.

cis-Dichlorodiammineplatinum(Ⅱ)이 발정주기에 따른 흰쥐 난관섬모 세포의 형태 및 섬모형성에 미치는 영향에 관한 전자현미경적 및 면역조직화학적 연구

김동옥,송양주,전영희,정호삼 한양대학교 의과대학 1995 한양의대 학술지 Vol.15 No.1

electron microscope for morphological changes of cytoplasmic organelles and with light microscope for detection of tubulin substances in the cytoplasm during estrous cycle. Experimental animals(weighting 200gm. female albino rats) divided into 4 groups by the estrous cycles. Ampullar oviducts of these animals were excised at each estrous cycles. The specimen was made into immunocytological reaction slides for detection of tubulin in the cytoplasm, and the other specimen were made to ultrathin section for electron microscopy. All of specimens were examined with light and electron microscope. The results obtained are as follows. 1. The tubulin substances in ciliated cells of oviducts revealed strong reactions during proestrus and estrus but weak reactions during metestus and diestrus. 2. After cis-Platin treatment, tubulin substances in the cytoplasm of oviductal ciliated cells showed weak stain reactions but at diestrus, moderate reactions were seen similar to that of the control group. 3. The cilia and basal bodies of ciliated cells of ampulla oviducts after cisplatin treatment were decreased in number at all stages of estrous cycle. 4. Ciliated cells in cis-Platin treated rat revealed hypertropies of mitochondria, atrophies of Golgi complex, decrease of polyribosomes and segmented cisternae of rough endoplasmic reticulum at proestrus, estrus and metestrus. It is consequently suggested that cis-Platin would induce inhibition of ciliogenesis in oviductal ciliated cells during estrous cycles.

鑛物性 冷却油의 Coolingability에 관한 硏究

김옥삼,최은순,정동화 麗水水産大學校産業技術硏究所 1992 産業基術硏究所 論文集 Vol.1 No.-

The laboratory quench method used in this study is based on plunging a silver cylinder heated to 800±1℃ into mineral base oils at given temperature. Experimental apparatus and measuring method followed the Korean Industrial Standard. Cooling curves at the boundary of the shape of cylinderical type measured by a silver-alumel thermocouple is recorded throughout the quenching period. Using the cooling curves, the collingability of the quenching oils at a various temperrature were compared and discussed.

Polyester 신합섬 직물의 농색염색 및 대전방지가공에 관한 연구 (Ⅰ)

김동권,이주형,이난형,김삼수,조환 영남대학교 지역발전연구소 1996 새마을지역개발연구 Vol.18 No.-

The Dyeing processing, which can be a low-cost and easily application to production field was investigated by using some bathochromic agent and dyestuffs. The Δ L values and dye up-takes of threated several fabrics were investigated according to the dye concentration and pH of dyebath. The results were as follows : 1. The selection of bathochromic agent acts as important factor for improvment of bathochromic property of fabrics. 2. The pH of dyebath has a little effect on bathochromic effect. 3. In case of one bath treatment, the bathochromic agent has little effect on the improving bathochromic property of treated fabric. 4. The efficiency order of bathochromic effect is DTY + fila.> CVY > DTY and fabric structure is also effect on the bathochromic property of the polyester fabric.

주파수응답함수법에 의한 타이어 반경방향 고유진동수와 감쇠비 측정

김용우,김병삼,최동수 順天大學校 1999 論文集 Vol.18 No.1

In this paper, we have reported fundamental natural frequencies and damping ratios in the radial direction of various tires, from passenger car tires to truck-bus tires, under unconstrained condition. We have determined the radial directional modal parameters of tires, which are subjected to different levels of inflation pressure, by using frequency response function method. The results show that experimental conditions shift the natural frequency and damping ratio.

우리나라 行政區劃線의 不合理要因과 그 改善方向에 관한 硏究

金裕赫,琴東信,梁在乾,李鳳三 단국대학교 법정대학 지역개발학과 1980 地域開發論叢 Vol.2 No.-

1. This thesis aims at analyzing the characteristics of the demarcation line of the administration areas in Korea by reviewing the history and background of how it was drawn and at the same time at exploring ways of correcting factors contributing to problems and ineffectiveness of administration. In order to collect data of opinions on this matter from officials actually assigned to the counties and their sub-level administration areas where administration is bifurcated in two separated blocks of areas, irrespective of the administrative efficiency and convenience of the populace in the areas, we selected eight kuns of this nature and sent questionaires to 488 chiefs and leading officials of kuns, myuns and villages. A total of 237 persons, 48.6% out of 488 responded. This data proved to be very expedient and instrumental in carrying out this study. 2. One of the characteristics of the demarcation line of administration areas is that it is drawn on the basis of natural conditions such as the extention of mountains, meandering lines of rivers, the formation of the community, traditional reasons, and so forth rather than on the theoretical as well practical backgrounds imbued with administrative philosophy, which seeks for rational and balanced development of a whole community with two factors in mind: the principle of spatial division as an administrative skill and the principle of spatial harmony for balanced division of administration zones. However, it is true that a large number of local inhabitants have felt inconveniences due to the boundary lines being zigzag or meandering. When we surveyed on the frequency of going to market as an indicator of economic activities of the people living along the boundary lines, it is found that almost 77.6% of the people questioned answered that they were going to markets located in the neighboring kun rather than those in their own administration zones. The factors that lead to choosing markets are usually two: one is spatial distance and the other is the peoples norm of life. Although the nature of the responses may vary according to where people live within the divided block of the administration area, a total of 86.6% of the questioned expressed their hope that the boundary lines would be straightened. This reflects their wishes of improving the efficiency of local administration and convenience of living for effectiveness of the administration cantrol. For example, state boundary lines of the U.S and Australia belong to the theoretical type is whereas sung boundary lines of China and kun(county) demarcation lines of Korea belong to the natural condition (or setting) type. Especially, some of administration demarcation lines of Korea have been zigzay so that one kun is divided into two or more separate blocks of areas as the result of city administration areas within the kun becoming enlarged. There are eight cases of this nature in Korea. 3. Our survey which was conducted to discover in part the extent of awareness of such bifurcation or division by the inhabitants living in the divided zones, showed that only 83.4% of those who responded said that they had knows the fact and the remaining 15.5% were quite unaware of the fact until they came to realize it upon reading our questionaire. This extent of unawareness means that local ranking administration leaders did not pay much attention to the effect of the local administration with respect to the boundary lines. 4. Speaking from the above finding, we are to propose that irrational factors related to the present administration demareation lines be corrected and improved for the following reasons: 1) To enhence the efficiency of administration, 2) To reestablish the system of utilization of resources 3) And finally to enlarge the integrated potentials of various social dynamics. We hope that efforts will be made to straighten administration demarcation lines as far as possible, taking into consideration the opinions and wishes of the people living in the affected areas and zones so that directions of development and improvement on this matter may be effectively explored. At the same time we propose the establishment of long range policies with a view of eliminating disparity in the development between the regions, by implementing necessary measures for development of local cities.

공용주차장 시공성평가 프로세스에 관한 연구

김춘우,김태삼,정동욱,김대석,현창택 대한건축학회 2000 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.20 No.2

As public facilities, public parking buildings are built with tremendous resource investments socio-nationally, and its outcomes affect general public's interests, much more near environments. Public parking building projects have been implemented focusing on how its initial costs could be economical. With literature reviews and expert interviews, elements affecting the construction type of public parking buildings were selected. The comprehensive constructability evaluation process which could be practical in the field is proposed through the classification of evaluation criteria influencing t#e constructability of public parking buildings and sequential evaluation process which modified the analytic hierarchical process. AHP was used as a basis of comprehensive constructability evaluation system, and vector nomalization and linear transformation in multi-criteria decision making technique were applied to each evaluation attributes to select the optimal alternative of public parking buildings.

습관성 흡연여성에서 후측 수부에 발생한 Buerger씨병

김삼,이남호,육청미,최영진,백대균,홍경순,두영철,한규록,오동진,유규형,임종윤,이광학,이영 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.7

대전광역시 남·녀 노인의 레크리에이션 활동 실태

김동건,민춘기,이용인,이종길,박영숙,염동삼 忠南大學校體育科學硏究所 1997 體育科學硏究誌 Vol.15 No.1

The Purpose of this study was to investigate the current conditions of recreation activities of male and female olders in Taejeon. 416 (197 males and 219 females) olders above 60 years old were selected as subjects and examined by face-to-face interview for this study. The collected data were analyzed using such statistical methods as frequencies and crosstabulation with Chi-suare tests. The major findings in this study were summarized as following: there were significant differences between male and female olders; male olders participated the most in tourism and entertainment, while female olders the most in hobbies and social activities; the purpose of male olders' activity was to maintain their health, but in the case of females it was use of leisure and self-actualization; male olders participated more frequently in recreation activities than female olders significantly.