• KIEAE Journal
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• 제6권3호
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• pp.11-18
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• 2006

Attention on daylighting should be focused not so much on a simple maximization of the natural light available in a space, as on improving the quality of lighting by ensuring as even but intense distribution of illumination in inner areas. An architectural means of optimal daylight distribution is by using so-called light shelf systems, horizontal shading and redirecting devices. The overall performance of the daylighting system can be improved by the incorporation with electric lighting control devices. This paper aims to exemplify the benefit of daylighting in term of economic consideration. In such a case a reasonable technique to compare system costs is by life-cycle costing. Stated simply, a life-cycle cost represents the total cost of a system over its entire life cycle, that is, the sum of first cost and all future costs. Four different electric lighting system designs are proposed and a lighting control system that is continuously operating according to the level of daylight in the space has been adapted. The result shows clearly that although denser layout of lighting fixtures might be more effective to interface to the level of daylight ceaselessly changeable, its economic benefit may not meet the expected criterion the reason of increased initial investment and maintenance cost for the fixtures and control devices.

• International Journal of Computer Science & Network Security
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• 제21권11호
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• pp.135-142
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• 2021

The article reveals the essence of cybercrime, approaches to understanding this concept, classification of cybercrime, and other illegal acts in this area. The concept of cybercrime has multi-discourse nature and a certain legal uncertainty. Cybercrimes, their forms and types are analyzed in the economic context. The research vocabulary of the economic industry is defined. The scope and content of concepts denoted by the terms of the sphere covered by cybercrime are studied, and its types and forms are analyzed. The article studies problems, achievements, and prospects of resisting and combating cybercrime during the development of the civil information society and Ukraine's entry into the global information space. The study focuses on the economic motivation of most cybercrimes since some material benefit from the fact of cyber offenses is assumed directly or indirectly.

• 산업공학
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• 제11권1호
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• pp.207-214
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• 1998

Since the natural gas air-conditioning not only increases the base load of the gas company but also decreases the summer peak load of the electricity company, it is considerded as an efficient demand-side management program. This paper suggests the economic evaluation method of the gas air-conditioning program from the perspectives of the participants, the pipeline gas company, the local distribution company, the electricity company, and the total resources. The absorption type gas air-conditioning/space-heating is selected as a case study to illustrate the economic analysis of the natural gas air-conditioning.

• 한국경제지리학회지
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• 제16권3호
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• pp.492-511
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• 2013

국제회계기준위원회(IASB)에서 규정한 R&D 산업은 다양한 분야에서 '연구'와 '개발'을 동시에 진행하는 3차 산업에 해당한다. R&D 산업과 관련한 기존 정성적 연구들은 공간군집 사례들을 기반으로 분류한 클러스터 유형 중 하나인 하이테크 혁신 클러스터로 취급하여 분석한다(Coe et al., 2007). 그러나 이는 다양한 R&D 산업의 공간군집 사례들을 일반화하는데 그쳤으며, 특히 클러스터 형성 과정에서 시간의 흐름을 고려하지 않은 R&D 클러스터가 시공간적으로 유의미한 것인지 알 수 없다. 이에 본 연구는 기존 공간적인 혹은 시간적인 측면만을 강조하는 클러스터 분석의 한계를 인식하고, 섬유 및 의복 제조업의 비교를 통해 R&D 시공간 클러스터를 탐색해본다. 연구방법으로는 시공간 클러스터의 발견 및 위치탐색을 위해 시공간 K-함수와 시공간 스캔통계를 이용하였다. 그 결과, R&D는 공간적 측면만 고려한 분석에서는 유의미한 클러스터가 발견되었지만, 공간적 분포와 시간적 흐름을 동시에 고려한 시공간 클러스터는 발견되지 않았다. 즉, 시간에 따른 R&D의 신설 과정은 이미 존재하는 R&D의 공간적 위치와 독립적인 것으로 나타났다. 반면 섬유 및 의복 제조업은 공간과 시공간 클러스터 모두 유의미한 클러스터를 발견했다.

• 한국IT서비스학회지
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• 제10권2호
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• pp.189-202
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• 2011

It is important issue how to evaluate the economic feasibility of computing factors in the real world when we build ubiquitous spaces. In this paper, we propose a simple model that can evaluate the economic feasibility of mobile RFID-based ubiquitous computing system which enables seamless communication between offline and online via embedded computing factors in the real world. To achieve this, we explore the meaning of mobile RFID system, the difference between our research and extant researches concerning the evaluation of economic feasibility in RFID system, and propose the so-called 'Tag-based Evaluation Model' (TEM) which is an evaluation model to access the economic feasibility of mobile RFID systems. We also analyze the TEM via simulation cases based on proposed model and discuss the future of TEM.

• 한국항공우주학회지
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• 제49권5호
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• pp.447-447
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• 2021

• 항공우주시스템공학회지
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• 제18권3호
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• pp.27-33
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• 2024

누리호의 성공과 차세대 우주발사체의 개발 목표를 통하여 국내 정지궤도위성 발사능력은 1톤에서 3.7톤으로 향상될 것으로 기대되며 화성, 소행성 등의 우주탐사에도 1톤 이상의 실질적인 능력을 제공해 줄 수 있을 것으로 예측된다. 고흥 우주발사장은 태양 동기궤도 소형위성에 최적화되어 있으며 타국의 영공을 침범하지 않아야 된다는 필수적인 전제조건으로 인하여 정지궤도위성 발사장으로는 다소 부족한 면이 존재한다. 초기 궤도 투입상태로부터 궤도면 회전을 위한 에너지의 증가가 필수적이며 운용 측면에서의 복잡성과 함께 경제성의 감소요인이 된다. 그러므로 차세대 우주발사체의 개발과 병행하여 지구 적도부근의 해외 지상발사장 또는 해상발사지점의 획득과 최적화된 정지궤도위성 투입에 관한 궤도 구성에 관한 연구가 계속되어야 한다.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2006년도 춘계학술발표대회 논문집
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• pp.67-70
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• 2006

In modern society industrial structure is being altered in complex and various way owing to rapid technical development and economic development, and concerns and recognition for surrounding environment is being moth heightened. For this reason, modern people requite the environment which can be applied in more pleasant and convenient way, and in order to satisfy such requirements, importance of the interior design mote vividly stands out, and concerns or the society for the design is being more Heightened these days. Especially, as for the design of the office space, the study transforming the office, which is the rendezvous of the information, into the business environment with more comfortable and sensitivity, being free rrom the design concentrated on the business efficiency and economic feasibility, has been actively proceeded. As it is the reality that various and new types of the business spaces have appeared, new office landscape design is requited as the device to solve the matter related to the society change. It is purposed to propose the office space which is comfortable together with flowing sensitivity by applying the color plan that unconsciously controls the human sense through remodeling of mid size of the office space.

• KIEAE Journal
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• 제11권6호
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• pp.117-125
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• 2011

As quality of life improves recently, people began to pay more attention to outdoor environment and outdoor activities. In case of the U.S.A., community garden is utilized as space for plant cultivation and horticulture activities and the space is also used for complex activities such as education, play, leisure and rest. At the same time, such diverse activities are linked with creating social and economic wealth, thus creating sustainable values in the community. This study targets to identify the social and economic effects of community garden. For this purpose, the study analyzes the detailed cases of community gardens in the U.S. and analyzed the contents of the study based on the theory of social capital. In case of Korea, community gardens are operated in the form of urbane farming and parks in most cases but it is desirable in terms of contribution to the community and sustainability to manage the community gardens with space characteristics and programs that set up communities by gathering many residents in the community. It is necessary to approach the matter of community garden comprehensively and to set up comprehensive and complex plans to form community gardens. This study is expected to function as an important base for such purpose.

• 한국경제지리학회지
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• 제7권2호
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• pp.283-296
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• 2004

본 연구는 수도권 농촌지역인 여주 지역의 토지이용 변화, 생활실태의 변화, 생활공간의 입지변화를 살펴 급격하게 변화하고 있는 생활공간의 지역성을 규명하였다. 여주 지역의 토지이용은 농촌 토지이용의 감소와 도시적 토지이용의 완만한 증가를 보인다. 완만한 속도의 도시화를 나타내는 기능으로서 관광농업이 나타나고 농외 겸업 활동이 비교적 활성화되고 있다. 여주지역 육로교통(고속도로통과)의 발달은 생활공간상의 입지이동에 큰 영향을 주었다. 수도권 외곽의 농촌이던 이곳은 도시화가 더딘 곳이었지만, 곧 전철 등의 개통 등 교통의 발달과 함께 도시화가 가속화될 지역이라 할 수 있다. 치밀한 도시계획이 수행될 때, 쾌적한 도시 주거환경 지역으로 변모할 것이 예상된다.