인터넷에서 사례기반 추론을 이용한 지능형 에이전트 설계

권승학 淸州大學校 2001 국내박사

韓國貿易構造와 아시아 NICS과의 水平分業에 관한 硏究

권승학 釜山産業大學校 貿易大學院 1987 국내석사

The developing countries of today are promoting industrialization in order to achieve an increase in the speed of economic growth. This is because most of the developed countries achieved their success through industrialization. Compared with the economic history of the developed countries, it seems that the later the underdeveloped countries begin their economic growth, the faster the rate of economic growth they achieve through industrialization. The economic growth of Korea for example has reduced remarkably the time required historically by the developed countries for their economic growth. Gerschenkron's historical dynamic view holds that the reason underdeveloped countries speed of industrialization is faster than that of the developed countries is that the former emphasize the chemical heavy industry. Even though the process of development in today's developing countries is similar to that of the developed countries, there are some important differences. The opportunities for development today are enhanced by changes in the international econmic environment. Still not all of the devoloping countries have succeeded in achieving a desirable rate of economic growth through industrialization. There has been very little analysis from the dynamic point of view of specific instances of success of failure in industrialization. This dissertation follows the method of comparing the progress of the structural pattern of international competitive power by analyzing the international industrial interdependence and the system of reciprocal trade. This dissertation concludes by suggesting that some developing conturies have been successful in working out their industrialization and others have been less succesful. 0ther nation never throw off their colonial heritage, and so do not benefit from their backwardness, and never escape from the swamp of stagnation. Despite the fact that Korea faces tightening forms of protectionism in trade and the supply of natural resources from the advanced countries, Korea could still continue her growth through the government's economic plans launched between 1962 to 1984, Korea showed an annual average growth rate of 8.2percent. Korea now stands in the group of newly industrialized countries. Korea's economy will be developed even more if the plan to expand the political and econmic ties among the Pacific basin nations materializes. However, trade competition will become keener between the newly industrialized nations, because these nations have all grown through similar economic measures. Korea's rapid growth is attributable to the development of its export structure. However, the export of light goods remarkably decreased in 1980, while the export of heavy and chemical commodities increased during that same year. The growth rate of manufacturing firms shows that the manufacturers of heavy goods grew faster than manufacturers of light goods during the period from 1970 to 1980. In contrast, the import ratio of manufacturers decreased from 19.7percent in 1970 to 16.5percent in 1980. These changes result mainly from a change in government economic policies ; government in the past stressed simply the exported commodity itself. Korea depended heavily upon labor-intensive economic systems until 1970. This economic structure contributed to the export of light goods, such as, clothes, shoes, electronic goods, machinery, and ship building. Cheap labor helped the sales of Korean-made goods, which were inexpensive on the international market. However, because many new developing countries, such as China, and other countries, also enjoy the advantage of cheap labor, the Korean economy these days is threatened more than ever. In the Korean economy "the expansion of exports once meant the expansion of imports" The ratio of imports to the GNP reached thirty to fifty percent. It is expect that from 1982 to 1990 the heavy equip-merit and machinery industry, the production of transportation machinery, electronic goods, electric appliances, and will grow two times as fast as any of those industries today. In fact, these industries so far have contributed the greatest proportion of exports and imports to the Korean economy. Whether we succeed or fail in the international technological competition determines the future of our country. We will have to make every effort to secure a solid base of industrial technology in order to enter the group of advanced countries by the year 2,000.

안전한 자료 전송을 위한 키 관리 시스템에 관한 연구

권승학 청주대학교 1993 국내석사

정보화 사회에서 가장큰 자산의 하나로 인식되는 정보의 효율적인 관리 및 보호를 위해서는 비밀보장을 위한 암호법을 기본으로 하여 정보의 불법변경여부를 판별하거나 송/수신 사실의 부인방지를 위한 용도에서 널리 사용되는 디지탈 서명, 그리고 중요한 자원이나 건물등의 출입통제를 위한 신분인증 프로토콜 등 다양한 보안 서비스가 요구된다. 또한 각종 보안 서비스를 제공하는 암호 시스템의 운용에서 발생되는 키관리 문제를 해결하기 위한 키이분배 방식도 보안 서비스 제공을 위해서는 해결 해야 할 중요한 과제의 하나이다. 본 논문에서는 기존에 연구된 키관리 시스템에 관한 사항을 정리하고 이를 토대로 단일키 시스템 및 공개키 시스템에 나타난 문제점을 단일계수를 사용한 키분배 프로토콜과 공개 단방향 해쉬함수를 이용하여 자기인증, 키의 일치, Key integrity, 키관리 센터의 자앵시 문제를 해결하기 위한 안전한 자료전송을 위한 키관리 시스템의 구현방안을 제시하였다. We damanded various services for an efficiency management and protection of informational which is recognized as one of the greateat asserts in information society. Also, the method of Key distribution for the solution to the Key management which brings about in the management of ciper system providing different security services, is one of the important issues that we should solve to offer security services. This thesis will adjust details upon Key management systems which are the established studies, and then will suggest that embody the devices of Key management systems for the secure trnsmission of data, so that we may solve the problems caused in an Unique key system and an Public key system such as the Self-authentication, Key concurrency, Key integrity, and the down of Key management center by utilizing Key ditribution protocol used unique count and an public one-way Hash function.

飮用水 內의 微量 有害物質 分析 및 水質管理에 대한 硏究

權昇鶴 충남대학교 1999 국내석사

According to urbanizaton and industrialization, micro hazardous articles have been issued as being much increased to use and polluted in drinking water recently. In case of apartment, reservoirs of drinking water have factors that micro hazardous articles are formed easily. This study was performed to identify the content of micro hazardous articles in reservoir drinking water, and to look into backgrounds of drinking water quality regulation The samples were collected at apartment underground reservoir in Taejeon city during 1996 and 1997. 7 kinds of disinfection by products(DBPs) like trihalomethanes(THMs) were determined by purge and trap method using gas chromatography(GC)/electron capture detector(ECD). 4 kinds of volatile organic compounds like benzene were determined by GC/flamed ionization detector(FID). 5 kinds of pesticides like diazinon were determined by GC/ECD. 10 kinds of trace metals like copper(Cu) were determined by ultrasonic nebulizer using inductively coupled plasma(ICP). 4 kinds of anion articles like fluorine(F^(-)) sere determined by Ion Chromatography(IC). Other inspection articles such as bacillus, residual chlorine, phenol, and etc were determined by the inspection rule of Korean drinkin water regulation. THMs were major pollutants among DBPs detected. The concentration of chloroform was 10~80 ppb grade. VOCs and pesticides were not detected. In case of old apartment, the concentration of zinc(Zn) and iron(Fe) were detected high. Some area(long distance from filtration plant) were not detected residual chlorine. Other inspection articles were satisfied with Korea drinking water quality regulation. With the above results, clean water was depreciated at apartment reservoir or in tap water pipeline. To solve these kinds of problems, we need strict management and regulation for reservoir, and some area(long distance from filtration plant) needs chlorine boosting equipment. Also, it should be required to educate and dnlighten reservoir manager.