• Journal of Biosystems Engineering
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• 제28권1호
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• pp.27-34
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• 2003

Present combustion engines have reached almost at the limit of development due to the fundamental structural problems. This study was carried out to propose a new concept internal combustion engine which has great potential advantages to the conventional engines. Proposed new concept engine is a kind of rotary engine. A rotor is rotating concentrically in a cylinder which is divided into two partitioning valves. and it makes four compartments in the cylinder. The volumes of each of four compartments are changing continuously with the rotor movement, and performs the functions of intake, compression. expansion and exhaust simultaneously. The results of this study can be summarized as follows. 1. Expected theoretical thermal efficiency is 44.9 percent at the condition of 1000rpm and compression ratio of 8.0. which is almost the same as that of the conventional engines. i.e., piston and Wankel rotary engine. 2. The new concept engine has 2. working strokes in every revolution. Therefore. the new concept engine can reduce the specific weight and volume than four-stroke piston engine. 3. The torque variation is very small. therefore minimal noise and vibration are expectable. 4. The new concept engine can reduce mechanical energy loss than piston engine because neither crank mechanism nor eccentrical motion exists.

• 한국IT서비스학회지
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• 제19권1호
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• pp.55-69
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• 2020

The Internet cyber space has become more important as it enters the intelligent information society of the 4th Industrial Revolution beyond the information age through the development of ICT, the expansion of personalized services through mobile and SNS, the development of IoT, big data, and artificial intelligence. The Internet has formed a new paradigm in human civilization, but it has focused only on the efficiency of its functions. Therefore, various side effects such as information divide, cyber terrorism, cyber violence, hacking, and personal information leakage are emerging. In this situation, facing the intelligent information society can lead to an uncontrollable chaos. Therefore, this study classifies the cyber dysfunction of intelligent information society and analyzes social cognition, suggests cyber dysfunction standard of intelligent information society, and examines the seriousness of dysfunction, and suggests technical research directions for future technologies and services. The dysfunctional classification of the intelligent information society was classified into five areas of cyber crime and terrorism, infringement of rights, intelligent information usage culture, intelligent information reliability, and social problems by FGI methodology. Based on the classification, the social perception of current and future cyber dysfunction severity was surveyed and it showed female is more sensitive than male about the dysfunction. A GAP analysis confirmed social awareness that the future society would be more serious about AI and cyber crime

• 한국실내디자인학회논문집
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• 제26호
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• pp.64-71
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• 2001

After Industrial Revolution, new thought system is needed to subdue multi-chanties and complexities of society. Nowadays under 'system theory', these efforts are theorized and organized in fields of science, philosophy and others. From Industrial revolution, before establishing the system theory, system has been needed by the expression methods. From that time, as it could be done, standardization, has been continued. Finally these conclusion reached at the systematic expression methods and when the system was build up, this theory was come true in Art such as De Stijl, Neo-Pasticism, Russian Suprematism and Constructism. For that reason, formal solution to achieve mass reductions was found in Art, so people connected Industry with Art at that time. Systematic expression methods in Art have characteristics of system and reflect mathematics and geometry theory which is based on the system theory. This study analyzes the systematic methods in contemporary interior space through the concept of systematic expression methods in Swiss Allianz's works which used the systematic expression methods and also inquires how the common meaning of system after recent times effect to contemporary design.

• 정보관리학회지
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• 제37권3호
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• pp.133-156
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• 2020

본 연구의 목적은 4차 산업혁명이 도래하면서 VR 산업에 대한 관심이 높아지고 기술에 대한 접근성이 강화됨에 따라, 국내 대학도서관 중 VR 서비스를 제공하고 있는 대학도서관에 대한 이용자 평가를 통해 서비스 개선 방안을 제안하는 것이다. 이를 위해 도서관 VR 서비스의 종류와 현황을 분석한 후, VR 서비스 이용자 설문 조사와 심층 면담을 통해 이용자 평가를 수행하였고, 이용자 의견과 선행 연구 및 사례들을 종합하여 대학도서관에서의 VR 서비스 개선 방안을 제안하였다.

• 한국빅데이터학회지
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• 제2권2호
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• pp.87-93
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• 2017

데이터 품질에 대한 연구는 오랜 기간 동안 수행되어 왔다. 하지만 이러한 데이터 품질관리 연구는 구조적 데이터를 대상으로 하였다. 최근에 디지털혁명 또는 4차산업혁명이 일어나면서 빅데이터에 대한 품질관리가 중요해 지고 있다. 본 논문에서는 기존 논문을 분석하여 빅데이터 품질 유형을 분류하고 비교 분석하였다. 요약하면, 빅데이터 품질 유형은 빅데이터 값, 빅데이터 구조, 빅데이터 품질 프로세스, 빅데이터 가치사슬 단계, 빅데이터 모형 성숙도 등으로 분류할 수 있다. 이러한 비교 연구를 바탕으로 본 논문에서는 새로운 기준을 제시하고자 한다.

• 복식문화연구
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• 제18권3호
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• pp.550-558
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• 2010

Russian Constructivism, which took the lead in the Russian trend of art until the late 1920's, was influenced by European Cubism and Futurism. Breaking away from the previous realistic tendency, Russian Constructivism, to meet the ideology of the revolution, insisted the "Art into Street" and the "Art in Industry" with its abstract and geometric design. Russian Constructivism effected paintings of mid 1920's, as well as Industrial design and costume design. This operated remarkable changes in Russian form of costume and textile area. An unusual situation like revolution had provided the social justification to develop a new costume design not for the special class of people, but for the general public. In this atmosphere, the plan of clothing mass production began to progress. Although the Russian Constructivism costume of arts shows the similarity in the trend of fashion and the physical forms of those days, its fundamental idea in manufacturing costumes was 'to create costumes to be possible to mass-produce and to be wearable to anyone regardless of the social class'. Therefore, Constructivism costume of arts pursued dynamism and geometric form through non-objective design that has broken away from the handcrafted and traditional standards of the past. These distinct characteristics served as a momentum to seek costume design based on productivity and functionality.

• 농촌지도와개발
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• 제7권1호
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• pp.3-12
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• 2000

Agricultural extension services in Korea began in 1956, and led self sufficiency of rice through the 'Green Revolution' in 1970's, and a year around supply of green vegetables through the 'White/Vinyl Revolution' in 1980s. The developmental stages of agricultural extension services in Korea, in terms of major purposes, observed by the researcher were as follows; 1) Stage of production guidance when increase in production was directly related to increased income of farmers, 2) Stage of management guidance, when agricultural extension were not only concerned in increasing production, but also in management and marketing, and 3) Stage of improved welfare, when extension services put more emphasis on welfare of farmers in terms of quality of life, as well as increased production, management and marketing. Since late 1980s, farmers in Korea realized the fact that increased production may not lead to increased income. because of this, farmers also wanted improvement of management and marketing. Extension changed the identified needs of farmers to new knowledge, information, and technology in their farm business operation including management and marketing. Loosened cooperations among the central, provincial and local levels after localization of extension services since January 1997 should be strengthened. Provincial level monitoring and supervising should be enhanced for more effective agricultural extension services to meet the changing needs of farmers in the future.

• International Journal of Advanced Culture Technology
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• 제5권3호
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• pp.56-66
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• 2017

E-Government is an administrative innovation that utilizes information technology and is the most powerful means to strengthen government competitiveness. At this moment, countries around the world are continuously improving government competitiveness by continuously implementing government innovation through the implementation of e-Government. Many scholars argue that e-Government should be changed in response to the Fourth Industrial Revolution. Therefore, Korea adopted the government 3.0 instead of the e-Government and promoted the information policy. But the result was a failure. Korea was once a leading country in e-Government, but now it is falling due to government 3.0. The reason can be analyzed in various ways. First of all, over the past decade, Korea's e-Government has been neglected without obtaining the permanence of policy. And the Korea government pursued a new strategy under the name of disconnecting from the past and lost policy permanence. Therefore, future information policy, especially e-Government policies, should be pursued from a politically neutral point of view. The lesson of government 3.0 failure in Korea is clear. Regardless of the government's replacement & regime change, the information policy should be pursued with consistency.

• Asian Journal for Public Opinion Research
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• 제1권1호
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• pp.7-25
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• 2013

For the Palestinians, what is the impact of the Arab Spring? The revolution not only dislodged Mubarak from the presidency, but also changed Egyptian policy regarding Palestinians in Gaza. New Egyptian diplomacy has encouraged Hamas and Fatah, which had been in dispute, to seek reconciliation and has loosened the border control on humanitarian grounds. We focus on Palestinian voting attitudes in the wake of the Arab Spring. Despite the vast quantity of literature written about Palestinian politics since the first decade of the millennium, we know little about the determinants of Palestinian attitudes toward the divided governments in the West Bank and the Gaza Strip. The Fatah government, in the West Bank, increased in popularity after submitting a request for UN recognition of Palestinian statehood. In Gaza, the Hamas government lost popularity because of mismanagement but won support through the success of its prisoner swap deal with Israel. However, evaluation of the ruling party does not depend only on one-time events. This research attempts to measure the impact of policy change in Gaza after the Arab Spring. We provide an account of our research on Palestinian attitudes toward the divided governments based on two sets of the original survey data conducted in May 2009 and June 2012. The paper sheds light on Palestinian attitudes and makes clear the effects of "democratization" in the Middle East and the effects of regional context factors on the occupied Palestinians.

• 한국기록관리학회지
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• 제17권4호
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• pp.201-223
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• 2017

제 4차 산업혁명의 도래로 인한 신기술의 도입과 클라우드 업무환경으로의 변화 등의 기록관리 외부환경의 변화로 인해 기록의 생산 및 관리 환경의 변화가 예상되나 현재의 법제와 시스템 등이 이러한 외부 환경 변화에 유연하게 대응하기에는 부족한 상황이다. 기록관리 프로세스, 시스템, 인프라 영역의 제문제가 서로 얽혀있어 부분적인 개편으로는 외부환경 변화에 대응하기 어렵다. 이에 전면적인 재설계가 필요하며 이러한 전면적 개편을 '차세대 전자기록관리'로 명명하고 차세대 전자기록관리 체계 구축을 위해 전자기록관리 프로세스를 재설계할 때 고려해야 하는 주요한 이슈들과 개선방법에 대해 연구하였다.