• Title/Summary/Keyword: 문제해결 과제

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A Proposal of USN-based DER(Decentralized Energy Resources) Management System (USN 기반의 댁내 분산 전력 관리 시스템 제안)

  • Kim, Bo-Min;Kim, Jeong-Young;Bang, Hyun-Jin;Jang, Min-Seok
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2010.05a
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    • pp.871-874
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    • 2010
  • Needs for Smart Grid development are increasing all over the world as a solution to its problem according to depletion of energy resources, climatic and environmental rapidly change and growing demand for electrical power. Especially decentralized power is attracting world's attention. In this mood a new era for a unit scale of decentralized power environment is on its way in building. However there is a problem to have to be solved in the uniformity of power quality because the amount of power generated from renewable energy resources such as wind power and solar light is very sensitive to climate fluctuation. And thus this paper tries to suggest an energy management method on basis of real time monitoring for meteorological data. In the current situation of lacking in USN-based killer application in Smart Grid field, this paper proposes the USN-based DER management system which collects the meteorological data and control power system througout utilizing wireless sensor network technique this business. This communication technique is regarded to be efficient in aspects of installation cost and tits maintenance cost. The proposed EMS model embodies the method for predicting the power generation by monitoring and analyzing the climatic data and controling the efficient power distribution between the renewable energy and the existing power. The ultimate goal of this paper is to provide the technological basis for achieving zero-energy house.

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Study of the Recycling Policy to Make Efficient Resource-recycling Society (효율적(效率的)인 자원순환사회 형성을 위한 자원재활용(資源再活用) 정책 고찰(考察))

  • Ryu, Su-Ho
    • Resources Recycling
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    • v.18 no.2
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    • pp.3-15
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    • 2009
  • To accomplish the greenhouse gas reduction which is over core unit project of the "Green growth" policy and "Resource circulation society", it is important to maintain proper balance and complement between energy recovery from waste and material recycling. This research(study) examined the related policies on the past of korea and foreign country, and also "The 4th resource recycling master plan" and "Energy recovery from waste plan" to provide advisable direction for resource recycling policy. The results of the research(study) showed that there were no significant difference between korea and developed foreign countries waste management policies. But in German policy, energy recovery from waste and pre-treatment are importantly considered and highly required for permission. Under current circumstance in korea, recycling will be more difficult than in the past. According to "The 4th resource recycling master plan", film type of synthetic resin was not sustainable recycled material in substance."Energy recovery from waste plan", proved that the energy recovery from RDF/RPF have lower efficiency than regular incineration generation and substance recycling. To solve these problems, the energy and remainder heat recovery must be generalized to "Energy recovery" concept and institutional improvement such as LCA(Life Cycle Assessment) system are need to support it. And also technology development to extract synthetic polymer by dissolved film type of synthetic resin must be provided.

An Experimental Hlodel of Isolated Lung Block for Evaluation of Pulmonary Preservation after Ischemial (허혈후 폐 보존효과를 측정하기 위한 폐장 분리관류 모형)

  • Sung, Sook-Whan;Lim, Cheong;Kim, Young-Tae;Park, Jong-Ho
    • Journal of Chest Surgery
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    • v.30 no.6
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    • pp.573-579
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    • 1997
  • During the last 30 years, major organ transplantation has become popular, even in Korea, such as kidney, liver, etc. After the successful clinical cardiac transplantation in Korea, many cases of cardiac transplantation are being performed in some centers. But lung transplantation has a lot of obstacles, especially'donor shortage and decreased tolerability of the lung to ischemia-reperfusion injury. Usually it was considered that the maximum safety margin of ischemic time in lung transplantation was about 4 to 6 hours. So, many investigators have tried to develop better preservation methods and experimental model for evaluation of effectiveness in those various methods. But most of those methods had several drawbacks in clinical and experimental settings. So we developed an easily-controllable, reliable, and inexpensive experimental model of isolated rabbit lung block. Using these model, we evaluated its effectiveness and reliability for the experiment of ischemia-reperfusion injury in lung transplantation.

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A Study on cooperation of Record Center following relocation of Central Administrative Agencies focusing on collective management of space and function in Record Center (세종시 이전 중앙행정기관의 기록관 운영 방안 검토 공간 및 업무의 공동 운영을 중심으로)

  • Nam, Kyeong-ho;Kwon, Yong-Chan
    • The Korean Journal of Archival Studies
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    • no.34
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    • pp.29-56
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    • 2012
  • Since 2011, 148 public institutions (including the central administrative agencies) have been moving to the provinces. First of all, the Prime Minister's Office began to be relocated to Sejong City on 14 Sep, 2012, followed by 6 central administrative agencies and their cooperative agencies are planned to move there. With regard to public institutions' relocation, the issue of record centers' relocation should be also considered. In respect that there is lack of facilities, manpower, and equipment in most record centers, it is doubtable whether the relocation of record centers will end successfully. The purpose of this study is to investigate the current state of record centers and to grasp their issues when they are relocated. The targets are the central administrative agencies which will move in 2012. The data was collected by request of information disclosure and personal contact with record centers. After analyzing collected data, both the issues caused by relocation and the cases of environment improvement were assured. In addition, the improvement of record centers' limitation (ex. The lack of exclusively responsible workers, the shortage of facilities, space and budget etc.) was suggested.

Importance-Performance Analysis of the Livestock Organic Wastes Recycling Policy (축산 유기성 폐기물 자원화 정책의 중요도-만족도 분석)

  • Kim, Won-Tae;Suh, Dae-Seok
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.12
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    • pp.523-531
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    • 2018
  • The purpose of this paper is to derive priorities and implications for the organic resource conservation policy in the livestock sector. We conducted a survey on the importance-performance of the organic waste resource reclamation of livestock sector using a 5-point Likert scale. The importance average for the resource recycling of livestock organic waste was 3.63 and the average of performance was 3.04. As a result of the IPA on livestock manure recycling measures, it is necessary to improve feed quality, establish a local recycling system, increase demand for compost and liquid, enhance customer linkages, and develop cost reduction technologies. It requires intensive support for promoting the spread of odor reduction technologies and integrated management of biomass. It is necessary to introduce mid- and long-term measures such as the revival of feed in tariff, promote by-product feeding, establish solid fuel process management standards, create hygiene safety standards, develop eco-beads and promotion of feed conversion. It is required to strengthen support for the development of odor reduction technologies and prepare consultative organizations among related departments, develop eco-friendly solid fuel technology, and support policies for renewable energy certification.

A Literary Study on the Changes in the Meaning of Gongye During Korea's Transition to the Modern Era (근대 전환기 한국 '工藝(공예)' 용어의 쓰임과 의미 변화에 대한 고찰)

  • ROH, Junia
    • Korean Journal of Heritage: History & Science
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    • v.54 no.3
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    • pp.192-203
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    • 2021
  • This paper investigates the process of change in the meaning of the term gongye (工藝) (nowadays it means craft) during Korea's transition to the modern era. The Annals of the Joseon Dynasty (朝鮮王朝實錄) will serve as the basis for the examination of pre-modern usage, and the Korea-United States Treaty of 1882 for the changes that occurred between the translation from Chinese and from Japanese following the opening of the port . After the port opened, the meaning of gongye, which once broadly referred to the wide range of work of people from different fields, was narrowed down to singularly represent the manufacturing industry. Following the example of Japan, the first East Asian country to succeed in modernization, this new meaning of gongye was generally used in the context of embracing Western culture and creating industry. As industrialization emerged as a national mission, and new terminology was needed to express these new concepts, the Chinese characters used by the Japanese to translate Western concepts were directly imported and used without making any changes. Gongye was similar in meaning to gongeop (工業) (nowadays it means industry) at the time, and the two terms were used interchangeably. However, following the Japanese annexation of Korea, the cultural administration of the Governor-General imbued the term with artistic concepts, and gongye was differentiated from gongeop, As such, examining the establishment of terminology and concepts can be helpful for understanding the contradictions and problems of the Korean crafts scene, which were derived from a period in the past called the modern era.

The First Year of the Moon Jae-In Government: An Assessment (문재인 정부 1년의 평가와 전망)

  • Kang, Won-Taek
    • Korean Journal of Legislative Studies
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    • v.24 no.1
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    • pp.5-29
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    • 2018
  • This paper aims at making an assessment about the first year of the Moon Jae-in government. President Moon was elected amid political insecurity over the impeachment of then-president Park Geun-hye. However, the Moon administration settled in fairly smoothly despite no transition period of presidential power. Political and economic stability was soon restored, and the tensions between the US and North Korea over the North's nuclear weapons program were, to some extent, managed along with the agreement of the North-South summit and the US-North Korea summit. Pyeongchang hosted the 2018 winter olympics and paralympics successfully. Moon continued very positive approval ratings of higher than 70%. However, he has something to be desired. His leadership seems to rely heavily on a limited number of close staff in the Blue House, alienating the governing the Minjoo Party of Korea. He should build better relationship with opposition parties particularly given a divided government. Rectification of the lingering negative practices should also produce institutional solutions. Above all, Moon should carefully watch out to prevent scandals over corruption and power abuse around him and his family, which would lead to a precipitous decline of the approval ratings and the abrupt weakening of the leadership.

A Study of Classical Literature Interpretation in Variety and Application - With 『Sunzibingfa(孫子兵法)』 by Sunzi - (『손자병법(孫子兵法)』의 응용술(應用術)을 통해 본 고전가용성(古典可用性) 고찰)

  • Choi, Young-jun;Kim, chung-hwan
    • (The)Study of the Eastern Classic
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    • no.33
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    • pp.193-230
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    • 2008
  • We apply The classics of the Orient as a way of solving the problems calling for immediate solution in the changes of these times by reconstructing a wisdom from the Oriental literature which are complementary cooperation and great capacity on the basis of convenient scientific knowledge and thought of the Western. In this context, I would like to search the inflection and application about The classics of the Orient throughout the leaders all ages and countries who make use of "Sunzibingfa", the art of war by Sunzi. So, It is charged with a mission in translation of the oriental thoughts and values how to make a shining example its way in the current of time. In this aim to introduce the classics of the Orient. We can see the classics publication which is translated by many scholars. I recommended "Sunzibingfa" among the classics in this my thesis. Because I want to look into how to use of this book which has the thoughts by the leaders all ages and countries. Under this intention, I will introduce three leaders who are famous for using the book "Sunzibingfa" in "Sanguozhi(三國志)"-Records of Three Kingdoms, Caocao(曹操), Zhugeliang(諸葛亮) and Simayi(司馬懿) in ancient times and Luiz Felipe Scolari and Liddel hart, one is famous for using the book as the coach of the Republic of Portugal soccer team the 2006 World Cup Soccer and the other is a strategist of England in these modern days. We can see how to use this "Sunzibingfa" in their places and circumstances. Therefore We can have a chance how to use The classics of the Orient. This is my purpose to write this thesis.

Characteristics of Modeling of Experiment in Case Analysis of Students' Open Inquiry and its Meaning on Science Education (학생의 자유 탐구 활동의 사례 분석을 통해 본 실험 모델링의 특징과 과학교육적 의미)

  • Kim, Kwan-Young;Lee, Jong-Hyeok;Choi, Jinhyeon;Jeon, Sang-Hak;Lee, Sun-Kyung
    • Journal of The Korean Association For Science Education
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    • v.42 no.2
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    • pp.201-214
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    • 2022
  • The purpose of this study is to examine the characteristics of model of the experiment in students' open inquiry. The research is a reinterpretation of the data collected from the performance of a three-year research project under the theme of 'school science inquiry' the perspective of model of the experiment. The inquiry activities of a focus group made up of four students have been recorded seven times. The recorded files and transcribed copies were analyzed according to interpretive methods. Students' activities were divided into three modeling of the experiment units, considering the modeling unit that includes the process of starting from the problem until it gets solved. The results of the study include illuminating the dynamic process and characteristics of modeling of the experiment and discussing its educational meaning as a distributed cognitive system at each modeling unit. First, students, instruments, and the primitive form of calculation represented by the interaction between them turned out to be important factors in the distributed cognitive system that constitutes model of the experiment. Second, in the early stages, non-verbal activities were carried out in which students became familiar with instruments, and verbal quantitative signs were created when the activities were sufficiently carried out. The generated quantitative signs became a source of data and confidence that can be referenced in subsequent activities. Third, the specialization of instrumentalization occurred, and factors that were important in inquiry, such as variable control, appeared. The results of the study provide new implications for science education research and education, which have been centered on explanatory models, by unfolding the characteristics of model of the experiment that have not been noticed in science education through students' inquiry.

Factors of Selecting Temporary Road Positions for the Optimal Path of Earthwork Equipment in Road Constructions (도로공사에서 토공장비 최적 이동을 위한 가설도로 위치선정 요소)

  • Lee, Dong-Jun;Kim, Sung-Keun
    • Korean Journal of Construction Engineering and Management
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    • v.23 no.2
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    • pp.85-94
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    • 2022
  • Construction industry is facing difficult challenges in terms of productivity, manpower, and industrial accidents. Currently, along with the 4th Industrial Revolution, various high-tech technologies are emerging, and efforts are being made to solve the problem by applying the technologies related to the 4th Industrial Revolution to the construction industry. As part of these efforts, research is being conducted to develop a construction equipment control system to increase productivity and safety at earthworks sites where many and various types of construction equipment are involved, and the system needs a function to increase productivity by optimizing the moving path of construction equipment. In the case of trucks, the location of the temporary road must be optimized in order to optimize the path of movement in the construction site. However, only matters related to the quality standard of temporary roads have been suggested so far, and there is no standardized process for efficiently determining the location of temporary roads. In this paper, the factors and its importance related to the location of the temporary road were identified through field surveys and interviews with experts, and a method for determining the location of the temporary road was presented. It was confirmed that the suggested method through a case study could improve the productivity of earthwork.