消費者主義에 관한 考察 : 消費者團體의 消費者主義를 中心으로

安勝轍,張興燮 濟州大學校 社會發展硏究所 1991 社會發展硏究 Vol.7 No.-

전환전략: Marriott 기업의 리스트락쳐링에 관한 사례연구

오흥철,김시중 우송대학교 1997 우송대학교 논문집 Vol.2 No.-

현재의 복잡하고 급변하는 기업환경하에서 경영상 심각한 어려움에 처해있는 많은 기업들을 볼 수 있다. 특히 호텔산업에서도 기업 도산이라는 최악의 상태로 까지 가는 경우를 흔히 접하게 된다. 그러나 어려움에 처한 기업이라고 반드시 도산한다고는 볼 수 없다. 쇠퇴의 이유에 대한 정확한 인식과 적절한 전환전략의 사용으로 기업은 회생할 수 있게 된다. 기업의 쇠퇴기에서 회복국면으로의 전환에 관한 학문적인 접근의 필요성에도 불구하고, 호텔산업분야에 있어서 전환전략들에 관한 체계적인 연구는 아직 미흡하다고 볼 수 있다. 본 연구의 목적은 기존 연구 문헌 조사와 현재 리스트락쳐링(기업구조개편) 중에 있는 미국의 MARRIOTT 기업에 대한 사례연구를 통해 전환전략개념을 이해하는 데 있다. On the current complex and volatile environment, many hospitality companies are confronting severely declining performance and are in serious trouble. However, troubled companies are not usually destined to fail: a successful turnaround is possible by understanding the cause of decline and using proper turnaround strategies. In spite of the increasing need of in-depth study on corporate turnarounds, yet there is a lack of systematic analysis about turnaround strategies in hospitality industry. The purpose of this paper is to synthrsize strategic concepts concering turnaround strategies through literature review and case study of Marriott corporation which is under restructuring.

惠岡 崔漢綺의 氣運化論으로 본 自然觀

孫興徹 연세대학교 국학연구원 2003 동방학지 Vol.120 No.-

The concept of "the one principle of heaven and man" (天人?一) searches for the basis of human existence and the scope of moral actions by beginning with the ideological principle that heaven, of "nature" eists concretely and that " heaven operates according to rules." Since the time that Chang Chae (??l 1020-1078) first developed this idea into philosophical metaphysics, this has remained a mainstream Neo-Confucian view of the world. However, sirhak ("practical learning") scholars of the late Choson dynasty began to seek a new view of nature by reevaluating this understanding and applying Wwestern natural science that was being introduced at that time. One representative theory came from Ch'oe Han'gi(???) whose view of nature was based on kihak (study of "material force", ??). His views on nature were developed from a metaphysical theory of material force. His final goal was rooted in a synthesized understanding of the harmony between humans and nature that took its departure from a simple objectified study of objectified. Accordingly, his kihak was type of practical scholarship in order to solve the problems of human existence by explicating the universe. The main elements of Ch'oe's ideas are the following: 1) It is fundamentally a monistic theory of material force: 2) Although its principle (?) is a logical principle of material force, control over the movement of material force depends on the material force and not the principle; 3) The metaphysical basis of human moral nature is not arrived at through the principle but through material force; 4) everything in the universal nature and human history is the activity of material force. This "activity of material force" is a logic that explains universal nature and humans as a unified entity. It refers to a concept comprised of "action, motion, activity and change," The first represents "life", the second "causality", the third "universality" and the fourth "completeness". The activity of material force is defined as a state in which "the material force expands so widely that there are no obstrutions to change, and all things perfectly realize their true state of being." Ch'oe thus explained universal nature and human history based on the activity of material force. Ch'oe Han'gi lived at a time when change and reform were desperately neede. The Confucian emphasis on moral cultivation was simply not an adequate aid in addressing the problems of the time. While this was a subject for objective investigation, Ch'oe was also interested in natural science and technology from the West which he believed to be an advanced form of knowledge for the sake of improving the physical living conditions of the common people. For him, nature was not simple a model of morality according to original Confucianism or theoretical object for meditation. Rather, it was an object for substantially contributing to the improvement in the quality of life and productivity. In this regard, his search for the principle of nature was crucial and the problems of humantiy and morality had to consider and verify the principles of nature which were being objectively examined.

PSA 법에 의한 CH_4/CO_2 혼합가스 분리

申興秀,李炳哲 홍익대학교 산업기술연구소 1993 産業技術 Vol.2 No.-

Mathematical simulation was performed to study the separation of CH_4/CO_2 gas mixture by pressure swing adsorption (PSA) process. The PSA processes considered in this study was 3-step PSA process for CH_4 or CO_2 production only and 4-step PSA process for simultaneous production of CH_4 and CO_2 using 5A zeolite and PCB activated carbon. Performance of separation by 3-PSA for CH_4 or CO_2 production only and 4-step PSA for simultaneous production of CH_4 and CO_2 operated below atmospheric pressure using 5A zeolite is better than that using activated carbon. PSA process operated below atmospheric pressure using both adsorbents is more advantageous than that above atmospheric pressure. 4-step PSA for simultaneous production of CH_4 and CO_2 operated below atmospheric pressure using 5A zeolite resulted in a little less inferior performance of separation than that for CH_4 production only, but in a far better performance than that for CO_2 production only. However, such an improvement in performance of CO_2 separation by 4-step PSA cycle disappeared when using activated carbon instead of 5A zeolite. The typical results for a PSA cycle between 1.01bar and 0.267bar using 5A zeolite were : 97.8 ㏖% CH_4 purity at 58.4% CH_4 recovery for CH_4 production only, 98.1 ㏖% CO_2 purity at 32.0% CO_2 recovery for CO_2 production only, and 97.3 ㏖% CH_4 purity at 50.9% CH_4 recovery for CH_4 and 95.8 ㏖% CO_2 purity at 71.6% CO_2 recovery for simultaneous production of CH_4 and CO_2.

소의 시상하부내에서 Vasopressin과 Oxytion분비세포의 분포에 관한 면역조직화학적 연구

유명철,김종중,장인엽,문정석,정주현,김흥중,조사선 朝鮮大學校 附設 醫學硏究所 1991 The Medical Journal of Chosun University Vol.16 No.1

This study was done to observe the distributions of Oxytocinergic and Vasopressinergic neurons in the hypothalamus of the cow. For the immunohistochemical staining, sections were reacted with the following sequence of solutions: monoclonal anti-vasopressin and anti-oxytocin, biotinylated anti-mouse IgG, avidin-biotin peroxidase complex, and Ni-DAB. The results observed under light microscope were summarized as follows. Our immunohistochemical investigations reveal both vasopressinergic and oxytocinergic neurons in the supraoptic nucleus(SON), paraventricular nucleus(PVN), accessory supraoptic nucleus (ASN), periventricular nucleus(PN), suprachiasmatic nucleus(SCN), and arcuate nucleus(AN), but these two types of neurons were mainly distributed in the PVN and SON and the ratio of the number of vasopressinergic neurons to that of oxytocinergic neurons was 1:1.30 in the PVN, and 1:1.00 in the SON. These two types of neurons were round, oval and spindle-shaped and cell size was 30-55um.

SM45C의 Laser 표면개질 조건에 따른 마멸특성에 관한 연구

옥철호,임동욱,서영백,박흥식,전태옥 동아대학교 생산기술연구소 2000 生産技術硏究所硏究論文集 Vol.5 No.1

Surface modification of plain carbon steel (SM45C) by Laser are usually much finer and stronger than the base metals. Nd-YAG laser source changes and refines the microstructure of the near surface layer, leading to enhanced hardness and wear resistance. The present study was undertaken to investigate the wear behavior and a processing parameters such as, power density, pulse width, defocusing distance, and molten depth for surface modification. The wear test was carried out under different experimental condition using the wear test device and the annular surfaces of wear test specimens as well as mating specimen of alumina ceramics(Al_2O_3) was rubbed in dry sliding condition. The results show that molten depth and width depend on defocusing distance. The wear loss was much in lower speed range below 0.2m/sec and in higher speed range above 0.7m/sec, but It was little in intermediate speed range. It depends on oxidation and wear speed.

光州川 水質의 經時變化에 관한 比較硏究

朱興珪,姜壽鐵 조선대학교 약학연구소 1989 藥學硏究誌 Vol.11 No.1

Along with rapid expansion and population rise of Kwangju City, it is inevitable that the urban sewage and industrial waste pollute Kwangju Stream. Having the Kwangju Stream partitioned into three areas ; the upper, middle, and down stream, the writer investigated ten items of water quality, and compared the water quality of 1986 to that of 1981, and 1984. From this investigation, results are obtained as the following: The pH of Kwangju Stream is 6.8 to 7.6, which is almost the same as those of the common streams in Korea. This means that there is not so much of special industrial waste causing the pH of water to change greatly yet in Kwangju. Remarkable increase of NH_3-N and BOD, components indicating pollutionity of urban stream, is observed in the downstream, which shows that the stream is polluted by the urban lifne sewage here. NO much differece of NO_2N is observed from area to area, but it is lowered a little in the downstream. This means that organic substances in the urban life sewage are oxidized and decreased due to aeration. The DO is observed the less as going down the stream, but a little increase of it is observed in the downstream, maybe, owing to the small brooks flowing into the stream from the nearby hills. Number of normal bacteria, and MPN are increased rapidly up to 4.96×10^4, and 5.78×10^4, respectively, in the middle stream because almost a half of the urban life sewage from Kwangju City flows into this area. In comparing the analytical values of the three different research years, rapid increase of NH_3-?? is noticed in the upper stream. This means that this area is polluted by the urban life sewage as the population around this area, recently developed, has increased for the while. The NO_2-N is noticed in almost the same phenomenon as NH_3-N in the upper stream, yet the pollutionity is decreased a little bit or remained in almost the similar degree in the middle and down stream. This shows that the areation has been stimulated by the faster velocity of water and extension of water surface owing to the irrigation ponds recently constructed on the beds of Kwangju Stream. The residue on evaporation and suspending solids raise a significant problem in the water area between Nam Kwangju Station and Yuduk-dong. This is caused by litterbugging of citizens having no sense of public order, which is also one of the charateristics of the urban stream. The BOD is also noticed in almost the same pattern as NH_3-N. The analytical value for 1986 is 2.8 times as mich of that of 1981, and 1.6 times as much of that of 1984 in the upper stream ; 1.7 times, and 1.1 times, respectively, in the middle stream ; and 1.9 times, and 1.2 times, respectively, in the downstream. That is to say, more increase of pollutionity is noticed in the upper stream than the area near the urban center. Number of normal bacteria and the MPN are also noticed in almost the same pattern as NH_3-N. Number of normal bacteria in the upper stream was 9.0×10^3 in 1981, but it is increased to be 2.7×10^4 in 1986, about three times of the former. The MPN was 3.6×10^3 in 1981, but it is increased to be 3.4×10^3 in 1986, 9.7 times of the former. This is owing to urban life sewage increased along with the population rise. Any remarkable increase of normal bacteria number is not obserbed over the whole stream, but MPN is increased almost double from the previous research year. This means that much fecal excrete is included in the urban life sewage, by which the urban stream is characterized. These data may serve as important materials in deducing components of water quality of other streams under natural conditions similar to those of Kwangju Stream in this research.

Ti-6Al-4V의 저주기 고온염 피로균열성장거동에 관한 연구

우흥식,강봉수,김봉철 東國大學校 1999 東國論叢 Vol.38 No.-

Fatigue crack growth behaviour of Ti-alloy, Ti-6Al-4V were investigated in air and salt corrosive environments. The temperatures which was tested were room temperature and 200℃. Fatigue crack growth rate is known to be fast for formation of corrosive product by impregnation Ti-Alloy with salt solution in hot salt environment. For the effect on corrosion fatigue crack growth behabiour of sale corrosive transformation in air and high temperature of region Ⅱ, fatigue crack grwoth rate in air atmosphere had a little gap to both case, 200℃ and room temperature. However, it showed very fast tendency especially in salt corrosive atmosphere, and it was remarkably accelerated in 200℃ high temperature salt environment. When ΔK was approximately 30MPa√m, fatigue crack growth rate had a little difference between at room temperature and at 200℃ high temperature, however in case of salt corrosive environment, the former was 3.5 times faster and the latter for 16 times than air environment respectively. For salt corrosive environment of microstructure (Ⅲ), the fatigue life in 200℃ salt corrosive environment was shorter than that of in air, reached to only 32%.

고강도 알루미늄 합금의 부식피로균열 성장 거동에 관한 연구(Ⅱ) : 주기 하중 파형의 영향 The Effect of Load Cyclic Wave-Form

김봉철,우흥식 동국대학교 경주대학 1997 東國論集 Vol.16 No.2

Fatigue crack growth in commercial plate of high strength aluminum alloy 7075-T651 has been studied under corrosion environments. In this paper the effect of cyclic load wave-form(trapezoid and triangle) on fatigue crack growth in air, water and sea water environments were investigated using standard LEFM testing procedures. It was founded that the fatigue crack growth behaviors were not affected by cyclic load wave-forms. In regin Ⅱ(stable crack growth region), the fatigue crack growth behaviors were affected by corrosion environments but the values of m are not affected by corrosion environments.

레이저 경화면의 형상특징 해석을 위한 프랙탈 차원의 적용

옥철호,조연상,배춘익,박흥식,전태옥 동아대학교 생산기술연구소 2000 生産技術硏究所硏究論文集 Vol.5 No.2

The determination of surface topography is believed to be extremely important in the areas of contact mechanics, adhesion and friction. In order to describe topography of various frictional surface, the harding test was carried out under different experimental conditions in dry friction. And fractal descriptors was applied to frictional surface of laser modified steel with image processing system. These descriptors to analyze surface structure are fractal dimension. Surface fractal dimension can be determined by sum of intensity difference of surface pixel. Topography of frictional surface can be effectively obtained by fractal dimensions.