• 농촌계획
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• 제15권2호
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• pp.27-42
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• 2009

This study has intended to evaluate the subjective landscape of rural region using additive integration index calculation model in Seondong region, Gochang-gun, Jeollabuk-do, Korea. This study consists of the following three steps. First, this study defmed the rural landscape using survey and developed the estimating equation for rural landscape assessment index. Second, this study set up assessment units and assessment indicators, then estimated mean of representative landscape adjectives in accordance with them through residents-participatory evaluation. Third, this study calculated rural landscape assessment index using additive integration index calculation model, and evaluated subjective landscape of rural region in accordance with space types and landscape fields through mapping methodology. The results of this study can be described as follows: 1) satisfaction level for landscape in accordance with village (urban area and residential area) was very high; 2) satisfaction level was very high in both Ye-Jeon reservoir and Hakwon farm, representative landscape resources of the study area.

• 경영과정보연구
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• 제32권5호
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• pp.45-68
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• 2013

본 연구는 기업이 지향하는 고객가치에 따라 공급사슬통합 수준에 차이가 있을 것이라는 가정 하에 자료 수집을 통해 공급사슬통합 유형을 분류한 뒤, 각 유형별로 고객가치 및 기업성과에 차이가 있는지를 검정하고자 하였다. 그 결과, 5가지 공급사슬통합 유형(높은 내부지향 통합, 중간 내부지향 통합, 높은 공급사슬통합, 높은 고객지향 통합, 중간 외부지향 통합)이 분류되어 기업들이 공급사슬통합의 개별 차원에 집중하는 정도가 서로 다르다는 것이 밝혀졌다. 또한, 공급사슬통합의 5가지 유형들 간에 지향하는 고객가치 및 기업성과에도 차이가 있는 것으로 나타났다. 품질과 납기의 중요성을 지향하는 기업들은 외부 통합에 집중하고 있으며, 외부 통합의 수준이 높은 기업들은 재무성과보다는 고객성과가 더 높은 것으로 밝혀졌다. 이러한 연구결과는 기업들이 중점적으로 추구하는 고객가치를 실현하기 위해서 어떠한 공급사슬통합 전략을 수립하여 접근해야 하는지에 대한 시사점을 제공해 줄 것이다.

• JSTS:Journal of Semiconductor Technology and Science
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• 제6권3호
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• pp.169-174
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• 2006

In this work, we demonstrate a novel compact mechanical beam steering transmitter based on a direct vertical integration of a 2-D MEMS-based mechanical beam steering antenna with a VCO on a single silicon platform. By eliminating the long feed lines and waveguide metal blocks, the radiation pattern has been improved vastly, resulting in an almost ideal pattern at every scan angle. The losses incurred by the feed lines and phase shifters are also eliminated, which allows the transmitter to be implemented using only a single VCO. The system complexity has been greatly reduced with a total module size of only 1.5 cm ${\times}$ 1.5 cm ${\times}$ 0.4 cm. This work demonstrates that RF MEMS can be a key enabling technology for high-level integration.

• Korean Journal of Chemical Engineering
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• 제35권12호
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• pp.2336-2347
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• 2018

The azeotrope of methyl acetate methanol and water was isolated using extractive distillation with water as entrainer. The pressure-swing extractive distillation (PSED) process and vapor side-stream distillation column (VSDC) with the rectifier process were designed to separate the methyl acetate, methanol and water mixture. It was revealed that the VSDC with the rectifier process had a reduction in energy consumption than the PSED process. Four control schemes of the two process were investigated: Double temperature control scheme (CS1), $Q_R/F$ feedforward control of reboiler duty scheme for PESD (CS2), $Q_R/F$ feedback control scheme for VSDC (CS3), the feedback control scheme of sensitive plate temperature of side-drawing distillation column to dominate the compressor shaft speed (CS4). Feed flow and composition disturbance were used to evaluate the dynamic performance. As a result, CS4 is a preferable choice for separation of methyl acetate-methanol-water mixture. A control scheme combining the operating parameters of dynamic equipment with the control indicators of static equipment was proposed in this paper. It means using the sensitive plate temperature of side-drawing column to control the compressor shaft speed. This is a new control scheme for extractive distillation.

• 대한전자공학회논문지TC
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• 제47권1호
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• pp.35-42
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• 2010

이동 통신망을 이용한 지상파 측위 기술은 GPS와 더불어 LBS를 구성하기 위한 핵심 기술이다. WiBro 시스템은 차세대 통신망으로 주목 받고 있으며, WiBro 망에서 매 프레임마다 방송되는 프리앰블 심볼의 특성을 이용하면 TDOA 방식의 무선 측위가 가능하다. 그러나 WiBro 시스템은 셀룰러 구조로 되어 있기 때문에 일반적으로 단말기가 다수의 기지국 신호로부터 거리정보를 구하기 어렵다. WiBro 망에서 삼변측량을 이용한 무선 측위를 하기 위해서는 수신 신호의 세기를 증가시켜야 하며, 장기 중첩 기법을 이용하여 가청성을 향상 시킬 수 있다. 본 논문에서는 주파수 잔여 오차와 수신 신호의 SNR에 따른 동기 중첩 및 비동기 중첩의 성능을 비교하여 WiBro 망에서 최적의 혼합 중첩 방법을 제시하였다. 컴퓨터 시뮬레이션을 통하여 혼합 중첩의 성능을 분석하고 WiBro 망을 이용한 무선 측위의 가능성 및 한계를 확인하였다.

• 충청수학회지
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• 제22권3호
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• pp.607-613
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• 2009

In this paper, we define the C-integral and prove the integration by parts formula for the C-integral.

• 한국산학기술학회논문지
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• 제12권3호
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• pp.1313-1318
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• 2011

안전하고 정확한 항해를 위해 선박에서는 진북을 나타내는 자이로 콤파스와 자북을 가리키는 마그네틱 콤파스, 그 외에 GPS 등의 다양한 선박 전자장치들이 활용되고 있지만 이러한 장치들의 호환성 문제로 인해 전체 선박 시스템의 효율성 및 유지보수성이 크게 저하되고 있다. 본 논문에서는 이러한 호환성 문제를 해결하기 위해 선박 전자장치의 다양한 출력신호들을 동일한 하나의 표준 형식으로 변환해 주는 프로토콜 통합 시스템을 제안하였다. 시스템 설계 시 다수의 장치들로부터 입력되는 신호들을 동시에 처리하기 위하여 Multi-threading 기법을 적용하였으며, 실험을 통해 이를 통한 데이터 처리 성능 향상을 확인하였다.

• Architectural research
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• 제14권4호
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• pp.117-124
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• 2012

High rise office buildings represent one of the most energy-intensive architectural typologies. The growth of urban population necessitates sustainable high rise towers that lessen environmental impacts and energy consumption. Among various sustainable strategies, the integrated design is long known to be an important process that has great impact on building's sustainability. The framework for this paper is based on the case study of integrated towers that are located in different climate zones. The paper specifically addresses to what extent climate conditions influence the design of a high rise building and what kinds of the climate integrated design has been implemented. Qualitative case studies were carried out using published data and architectural drawing set. The technical work presented in the paper is based on computer simulation that examines the insolation analysis using hourly recorded weather data. The analysis results revealed that the site and building envelope integration and the site and building service systems have shown the most frequently employed in the integrated towers through the implementation of renewable resource integration, high performance envelopes and sustainable building service systems. Internal comfort and further energy saving in the integrated towers are offered through an automatic building management system. Due to the dynamic climate conditions, integration of building systems requires a sophisticated approach to building sustainability.

• 지역연구
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• 제15권2호
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• pp.5-19
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• 1999

This paper identifies five factors that limited urban network formation in Northeast Asia over the past half millennium, questions the extent to which they are being overcome in the 1990s, and sketches a network of cities that could boost regionalism. It briefly traces the historical evolution of these factors, including comparisons with European integration, while focusing primarily on the policies of the 1990s that have affected their continuing role. First is the factor of closed national markets with weak regional integration. Second is the preeminence of administrative means of integration over commercial ones. Third is the character of localism, shackled by overcentralization and weak cross-border linkages. Fourth is the limited nature of internationalism, dominated by state catch-up policies with one-sided global involvement. Fifth is a lack of regional consciousness. Just as national urban integration was essential for regional networks to form, without regional integration it is difficult to contemplate Northeast Asian cities taking their rightful place in a global urban network. After noting the failures of the 1990s, the paper points to the potential role as dragon's heads for sub-regional urban networks of potential front-line cities: Tumen, Sapporo, Irkutsk, and what I call the Amur triangle. Also of interest are how the capitals of Beijing, Moscow, Seoul, and Tokyo will adjust to a transformed urban network. After all, their current skepticism must be overcome with a program that links the benefits on all sides in order to build trust in regionalism. This requires internationalism and symbols of a balanced approach to each country's needs.

• 패션비즈니스
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• 제17권6호
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• pp.60-75
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• 2013

This study examined the categories and contents of technology that is recently influencing the fashion design. For this, the cases of global companies integrating fashion design and technology were examined, and the types of technology integration studies within the field of fashion design were analyzed through the trend of fashion-technology integration in domestic academic circles released since 2000. According to the case of global companies integrating fashion design and technology, various companies and fashion brands have released fashion products that are integrated with technology, and such integrations are developing up to the field of fashion shows and displays in addition to fashion products. The analysis of studies related with fashion and technology in the design field showed that domestic studies on fashion-technology integration were manifested as the types that applied various technologies to the fashion design. Such types were categorized into the studies that applied light-emitting technology, studies that focused on the integration of interaction and textile design, studies that applied response-perception, studies that used attached electronic devices, and studies that used autogenic bacteria. The fashion has less negative impact on body and environment compared with other areas, and therefore, is the best area for the experiments in IT, bio, and electronics areas and for the integration of fashion and technology. Moreover, studies on fashion that suggest the capability in developing and industrializing cases through the collaboration with other fields such as IT, bio, and electronics shall continue.