• 제어로봇시스템학회:학술대회논문집
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• 1991.10a
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• pp.1085-1090
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• 1991

Chemical heat pump is a system to upgrade the low level energy such as industrial waste heat and solar energy by using coupled endothermic and exothermic chemical reactions. Dehydrogenation of 2-propanol can absorb heat near 80.deg. C and is transformed into acetone and hydrogen. Hydrogenation of acetone can liberate heat near 200.deg. C. Dehydrogenation of 2-propanol is difficult around 80.deg. C because .DELTA.G has positive value, but dehydrogenation reaction in liquid phase can overcome this problem because vaporized acetone and hydrogen can be rapidly eliminated. In this work, dehydrogenation of 2-propanol was investigated in liquid phase with Raney nickel catalyst. The energy efficiency of the chemical heat pump was estimated by computer simulation.

• Korean Security Journal
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• no.1
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• pp.175-208
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• 1997

I study the actual condition and the problem of the crime prevention system of two seoul police station. that is operated on the unit of police box, and present the new improvement. Stragic and active is the new crime prevention system that introduces a concept of community oriented policing, the tendency of a developed country police. I present a medium - sized police station where 250${\sim}$300 policemen work. It consist of a patrol division, a community division and a administration support division. The chief of police bears the responsibility only for crime prevention service by concentrating on pure Patrol - centered crime prevention activity and community relation activity. Next I present a police inspector system. The most important on this paper is the community policing officer system that a policeman bears responsibility on district apart from a patrol division and support a police service related community. To be operated these systems effectively, these need to be regulated according to a police distinct, a police purpose and it's demand. Also a scale, function, authority of a existing. Police station must be regulated and the police training must be carried out.

• The Korean Journal of Health Service Management
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• v.7 no.4
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• pp.49-63
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• 2013

This study attempted to examine what effect knowledge management factors have on cooperative organizational culture regarding knowledge sharing depending on workplace types and occupations in order to seek for solution to increase efficiency and effects of knowledge management in the hospital organization. Key findings are as follows: For members of the hospital organization, the higher their recognition was in relation to 'concern and support of chief executive officer for knowledge management', and 'problem solution by specialists or superior in the organization and acquisition on the task knowledge', the more they worked as factors exerting positive effects on 'cooperative organizational culture regarding knowledge sharing'. And influence factors were different depending on workplace types and occupation.

• The Journal of Korean Physical Therapy
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• v.14 no.2
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• pp.153-161
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• 2002

The purpose of this study was to investigate the chest physical therapy in the hospital of seoul, kyungido and to activate the chest physical therapy. Dept. of physical therapy in 15 hospitals, 65 physical therapists disabled and analysis of interview. The results are as follows: 1) $86.7\%$ of respondents were not chest physical therapist in the hospital. $79.4\%$ of respondents were a lack of 5 patients per month. 2) The chief diagnosis of chest physical therapy was respiretory muscles weakness by reason of spinal cord injury and muscle diseases. Many physical therapists was obtain the chest physical therapy information from university or collage. 3) Management of chest Physical therapy Patient was to be alike physical therapist and doctor A problem of chest physical therapy was a lack of chest physical therapy information, cognition of a physician. The results of this study suggested that chest physical therapy need to organization of the treatment and magnification of the treatment area.

• Journal of Chest Surgery
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• v.21 no.4
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• pp.716-720
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• 1988

Since Krause first described coronary arteriovenous fistula in 1865, there have been nearly 300 additional patients with this malformation reported in the literature. Increasing numbers of patients with this anomaly are being recognized each year resulting from the widespread use of cardiac catheterization and selective coronary arteriography in the evaluation of a variety of cardiac problems. A 9 month old male was admitted with the chief complaint of cardiac murmur and frequent URI and diagnosed as coronary A-V fistula at the distal portion of left anterior descending coronary artery to the apex of the right ventricle by cardiac catheterization and aortography. On the operative field, the left anterior descending coronary was markedly dilated about 1.5 cm in diameter from the aorta to the apex of the heart. The fistula opening was closed with 5-0 Prolene continuously under cardiopulmonary bypass and moderate hypothermia[28*C]. Postoperative course was uneventful and the patient was discharged without problem.

• Journal of the military operations research society of Korea
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• v.5 no.1
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• pp.7-15
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• 1979

The very fact that so many of us are here to participate in this conference on Operations Research is an indicator of the importance we attach to this relatively new and still expanding field. All of us recognize that Operations Research techniques are especially useful tools in problem solving in business, Government and the military. A discussion of the role of Operations Research and the related field of Systems Analysis in national defense policy and programming decision processes seems especially appropriate at the opening session of this conference, As you know, Operations Research as an organized form of research first found application in the review of individual military weapons systems and their effectiveness just over forty years ago. From that relatively narrow beginning has evolved a discipline whose future exploitation and utility you will explore over the next several days. I plan to review very briefly the historical development of Operations Research and Systems Analysis as tools in the defense decision-making process. Then, I will give you an overview of their application to today's military and defense problem solving by discussing the use of these techniques at the headquarters level by the United States Navy, Obviously, in such a brief period, I cannot cover all applications, specific techniques, or all of the groups involved in such a complex process. A review of the historical development of Operations Research/Systems Analysts reveals that the use of the basic concepts of Operations Research is not new; it originated with the first attempts to use the scientific approach to solve problems. We are still seeking, through modern analysis, to answer the three questions posed by John Dewey in his examination of the problem solving process in 1910.'1 - What is the problem? - What are the alternatives? - Which alternative is best? As I noted earlier, Operations Research, as an organized form of research, began in Great Britain in the late 1930s with the review of individual weapons systems.

• Journal of the korean academy of Pediatric Dentistry
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• v.28 no.3
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• pp.345-354
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• 2001

The purpose of this study was to make public oral health plan more effective and the improvement of the hospital management system for better clinical dental practice. Distribution and trends were examined in all patients who had been examined and diagnosed at Department of Pedodontics, Dental Hospital, Chosun University over 10 year-period from 1990 to 1999 Results were as follows, 1. The number of patients per year was increasing trend after 1996 and higher visiting rate in male(55.9%) than in female(44.1%). 2. Age distribution had shown $3\sim4$ year-old cup being the largest (23.4%) and each percentage of $5\sim6,\;7\sim8,\;0\sim2,\;9\sim10,\;11\sim12,\;13\sim14,\;above\sim15$ year-old group was 19.9%, 17.7%, 14.6%, 12.6%, 8.0%, 3.3%. 0.5%. 3. Geographic distribution showed a majority of patients in Kwang-Ju (83.0%). Group in the suburbs of Kwang-Ju(Jang-Sung group) was 5.4%. 4. Dental caries showed the highest percentage(40.5%) in chief complaints and percentage of oral exam, orthodontic problem, oral pain, trauma, supernumerary teeth, swelling was 13.9% 12.6%, 8.8%, 7.4%, 5.5%, 4.9%. 5. In all patients with traumatic problem, crown fracture showed the highest percentage(41.4%) and percentage of subluxation was 19.4%. 6. Majority(78.7%) of patients were not refered, and percentage of patients refered from local clinic was 20.5%. 7. Patients who had periodic check-up comprised 19.6%, and percentage of after 3, 6, 9, 12, 18, 24month was 36.7%, 22.2%, 13.5%, 11.3%, 5.4%, 11.0%.

• Journal of Periodontal and Implant Science
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• v.42 no.3
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• pp.105-109
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• 2012

Purpose: Soft tissue recessions frequently cause esthetic disharmony and dissatisfaction. Compared with soft tissue coverage around a tooth, the coverage of an implant site is obviously unpredictable. Particularly in the cases of thin mucosa, a significant greater amount of recession takes place compared to thick mucosa. To overcome this problem, this case report demonstrates a two-step mucosal dehiscence coverage technique for an endosseous implant. Methods: A 33-year-old female visited us with the chief complaint of dissatisfaction with the esthetics of an exposed implant in the maxillary left cental incisor region. A partial-thickness pouch was constructed around the dehiscence. A subepithelial connective tissue graft was positioned in the apical site of the implant and covered by a mucosal flap with normal tension. At 12 months after surgery, the recipient site was partially covered by keratinized mucosa. However, the buccal interdental papilla between implant on maxillary left central incisor region and adjacent lateral incisor was concave in shape. To resolve the mucosal recession after the first graft, a second graft was performed with the same technique. Results: An esthetically satisfactory result was achieved and the marginal soft tissue level was stable 9 months after the second graft. Conclusions: The second graft was able to resolve the mucosal recession after first graft. This two-step approach has the potential to improve the certainty of esthetic results.

• Journal of the Korean Society for Nondestructive Testing
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• v.18 no.1
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• pp.27-32
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• 1998

This paper is written to introduce a multimedia tutoring system for nondestructive testing using personal computer. Nondestructive testing, one of the chief methods for inspecting welds and many other components, is very difficult for the NDT inspectors to understand its technical basis without a wide experience. And it is necessary for considerable repeated education and training for keeping their knowledge. The tutoring system that can simulate NDT works is suggested to solve the above problem based on reasonable condition. The tutoring system shows basic theories of nondestructive testing in a book-style with video images and hyper-links, and it offers practices, in which users can simulate the testing equipment. The book-style and simulation practices provide effective and individual environments for learning nondestructive testing.

• Journal of Korean Foot and Ankle Society
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• v.8 no.2
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• pp.195-198
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• 2004

Purpose: To compare clinical characteristics of ganglions in hand & Foot. Materials and Methods: Seventeen cases of ganglions located in foot and fifty-five cases in hand. Excised from Mar.1988 to Apr.2003, were included in the study. The clinical characteristics and recurrence ratio were evaluated Results: The mean size of 2.2 cm in hand and 2.5 cm in foot. The most common area of ganglions are dorsum of foot and wrist. The cosmetic problem of palpable mass is the primary chief complaint of ganglions on hand and the pain is that of foot. The recurrence was found in 5 cases in hand and 4 cases in foot. The recurrence was related to incomplete excision of ganglion in foot and the large size of ganglion and incomplete excision of ganglion in hand. Conclusion: recurrence ratio in the cases of foot is higher than that of hand. The ganglions in foot and hand need to treated by meticulous surgical excision to prevent the recurrence.