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      • KCI등재

        방광 감압 후 폐쇄 후 이뇨로 오인된 중추성 요붕증

        이강우,양철우,임동준,권혁상,강미자,김은숙,윤건호,손호영,차봉연 대한내분비학회 2009 Endocrinology and metabolism Vol.24 No.2

        Post-obstructive diuresis after treatment for neurogenic bladder-induced obstructive kidney disease is a common symptom. As polyuria may develop in many other conditions as well, the present case is about a patient with a chief complaint of polyuria accompanied by nocturia, that was initially diagnosed as hydronephrosis due to the presence of neurogenic bladder and bladder dysfunction. The result of the water deprivation test, which was conducted for persistent diluted polyuria, yielded a final diagnosis of central diabetes insipidus, notwithstanding the strong impression of post-obstructive diuresis initially made because of a sudden increase in urine output after an indwelling catheter was inserted for bladder decompression. In post-obstructive diuresis, polyuria actually does compensate for disturbed homeostasis through water and electrolyte diuresis and it does not require specific management. However, in central diabetes insipidus, which resembles manifestations of dilute polyuria, the urine and plasma osmolarity need to be under the strict control of anti-diuretic hormone. In the case of persistent dilute polyuria occurring after obstructive uropathy, underlying diseases such as diabetes insipidus should be taken into consideration. Post-obstructive diuresis after treatment for neurogenic bladder-induced obstructive kidney disease is a common symptom. As polyuria may develop in many other conditions as well, the present case is about a patient with a chief complaint of polyuria accompanied by nocturia, that was initially diagnosed as hydronephrosis due to the presence of neurogenic bladder and bladder dysfunction. The result of the water deprivation test, which was conducted for persistent diluted polyuria, yielded a final diagnosis of central diabetes insipidus, notwithstanding the strong impression of post-obstructive diuresis initially made because of a sudden increase in urine output after an indwelling catheter was inserted for bladder decompression. In post-obstructive diuresis, polyuria actually does compensate for disturbed homeostasis through water and electrolyte diuresis and it does not require specific management. However, in central diabetes insipidus, which resembles manifestations of dilute polyuria, the urine and plasma osmolarity need to be under the strict control of anti-diuretic hormone. In the case of persistent dilute polyuria occurring after obstructive uropathy, underlying diseases such as diabetes insipidus should be taken into consideration.

      • A Caching Mechanism for Remote Queries in Distributed Directory Systems

        이강우,Lee, Kang-Woo Korea Information Processing Society 2000 정보처리논문지 Vol.7 No.1

        본 논문에서는 분산 디렉토리 시스템에서 질의 처리 속도를 향상시키기 위하여 원격지의 객체에 대한 질의와 결과를 요청지의 캐시에 저장하는 캐싱 메카니즘을 제안한다. 이를 위하여 첫째, 분산 디렉토리 시스템에 저장되는 캐시 정보를 응용 데이터 정보, 시스템 데이터 정보로 분류하고, 분류된 캐시 정보를 기반으로 캐시 시스템 구조를 설계하였다. 둘째, 각각의 캐시에 대한 거리 정보와 접근 회수를 가중치로 부여한 최소-TTL 대체 기법을 개발하였다. 마지막으로 제안된 캐시 기법과 타 기법(LRU, LFU 대체 기법)에 대하여 성능 평가를 수행하여 제안된 기법이 LRU 기법 보다 25%의 성능향상을 보였으며, LFU 기법보다는 30%의 성능향상 결과를 보였다. In this paper, for improving the speed of query processing on distributed directory system, we proposed a caching mechanism which is store the queries and their on the remote site objects in the cache of local site. For this, first, cached information which is stored in distributed directory systems is classified as application data and system data. And cache system architecture is designed according to classified information. Second least-TTL replacement mechanism which uses the weighted value of geographical information and access frequency for replacements are developed for each cache. Finally, performance evaluations are performed by comparing the proposed caching mechanism and other mechanisms (LRU, LFU replacement). Our least-TTL mechanism shows a performance improvement of 25% over the LRU and that of 30% over LFU.

      • KCI등재

        다단계 재고관리시스템에 관한 연구 : 수산물가공업의 재고관리를 중심으로 Especially with the Inventory Management of Fisheries Processing Industries

        이강우 한국수산경영학회 1990 수산경영론집 Vol.21 No.2

        The objective of this study is to develop an inventory model for the inventory management of a stocking point which sells processed fisheries products. The study, first of all, sets up fisheries processing companies, food companies, apparel companies, pharmaceutical companies and electronic and electrical companies as a population. Then, a comparative study is empirically applied to obtain the inventory characteristics of final products by industry through a survey of a sample selected by a random sampling procedure. The major inventory characteristics of processed fisheries products obtained from the above analysis can be summarized as follows : 1) The major demand characteristics of processed fisheries products is to have wide seasonal fluctuations because the supply of raw materials (i.e., fisheries products) heavily depends on the productive capacity of nature. 2) It has found that fisheries processing companies are the worst in inventory management among the various industries selected in the sample. However, the self-rating of inventory management system by inventory managers of companies shows that the fisheries processing companies are relatively higher than the other companies. 3) The portion of inventory holding cost out of inventory relevant cost is very high for processed fisheries products compared with final products of the other industries. 4) Processed fisheries products are distributed to final consumers through roughly two distribution echelons and take a parallel type inventory system for their distribution structure. In order to develop an inventory model which reflects the inventory characteristics of processed fisheries products mentioned in the above, an inventory model with partial backorders is developed under the situation of stochastic lead time under the consideration of the inventory characteristics of processed fisheries products and then an iterative solution method is provided for the model. Then this study analyzes sensitivity for the standard deviation of lead time in the model by numerical examples.

      • 분산 디렉토리 데이터베이스 시스템에서의 메타 데이터 캐싱 기법

        이강우,고진광,Lee, Kang-Woo,Koh, Jin-Gwang 한국정보처리학회 2000 정보처리논문지 Vol.7 No.6

        In this paper, a cache mechanism is proposed to improve the speed of query processing in distributed director database systems. To decrease search time of requested objects and query processing time. query requests and results about objects in a remote site are stored in the cache of a local site. Cache system architecture is designed according to the classified information. Cache schema are designed for each cache information. Operational algorithms are developed for meta data cache which has meta data tree. This tree improves the speed of query processing by reducing the scope of search space. Finally, performance evaluation is performed by comparing the proposed cache mechanism with X500.

      • 시장사회주의 베트남의 시민사회와 NGO

        이강우 한국국제지역학회 2005 한국국제지역학회보 Vol.5 No.-

        Vietnam won independence and unification from the great powers such as France and the United States in the past. At present, it is a socialist country that pursues the most dynamic changes along with China, achieving economic growth of seven percent per annum under the political and social stabilization. People who have once lived in Vietnam can feel the liberal atmosphere and the power of capital. On the other hand, they can feel rigidity of authoritative bureaucracy and the atmosphere of a closed society when going deeper in business rather than economic liberty. We have thought that economic reform, opening and accompanying drastic social changes would collapse the existing political system and turn to democracy. Rather, we feel confused since North Korea stays with its system with millions of people dying of starvation, and Vietnam and China keeps the system even more firmly. Vietnam has induced foreign capital and achieved prominent economic growth in the world since the introduction of market economy in 1986. Have accompanying civil powers emerged and civil society grown? What are the particular forms, and how are they connected to the country and contribute to achieving both social and political stabilization and economic growth? This paper aims at give answers to those questions. During the course of it, we illuminate the present state of Vietnamese civil society and NGOs engaging in development in the inside and outside of the country under the national support.

      • KCI등재

        교육목표와 학습성과 평가를 통한 프로그램 운영 방안에 대한 연구

        이강우,신연순 한국공학교육학회 2009 공학교육연구 Vol.12 No.2

        astically. Considerable number of faculties in diverse engineering majors keep pouring their efforts for better engineering education. Nevertheless, due to unfamiliarity to certain terminologies that can be easily found in other areas, major number of engineering faculties suffer from difficulties in fulfilling the requirements for Engineering Accreditation. This paper presents fundamental knowledge underlying Accreditation Standards and requirements of each Standard, in detail. This paper eventually provides engineering programs with concrete ways by which one can fulfill all the requirements for Engineering Accreditation. 우리나라에 공학교육인증제도가 도입된 지 불과 10년 정도임에도 불구하고 확산 속도가 급속하다. 이에 따라 공학교육인증체계의 운영주체인 교수들이 많은 노력을 기울이고 있지만 현실적으로는 많은 어 려움을 겪고 있다. 본 논문에서는, 공학교육인증제도 에 대한 이해도를 제고하여 공학교육인증제도를 위 한 체계의 구축과 운영에 도움을 주고자 한다. 인증 기준의 바탕에 있는 기본적인 철학을 설명하고, 인증기준설명서에서는 찾을 수 없는 구체적인 실천 방 안 등에 대한 상세한 정보를 제공한다. 특히 평가방 법론을 소개하여 평가체계의 개념을 정리하고자 한 다. 본 논문은 인증기준 KEC2005를 중심으로 하고 인증기준 1과 2만을 다룬다.

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