• 정보화연구
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• 제9권4호
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• pp.401-411
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• 2012

정보자원에 대한 투자가 증가하면서 비용절감을 도모할 수 있는 클라우드 컴퓨팅 서비스에 대한 관심이 증가하고 있다. 그러나 클라우드 컴퓨팅은 경제적 이득이라는 장점과 함께 물리적으로 외부에 위치한 정보자원을 활용함에 의해 정보자산 통제와 정보보호의 취약점을 증가시킨다는 단점을 지니고 있다. 이에 본 연구에서는 클라우드 서비스의 고유속성으로 인한 새로운 취약점을 포함하여 클라우드 컴퓨팅의 취약점 도출과 클라우드 컴퓨팅의 취약점 통제항목을 도출한 후, 취약점과 통제항목간의 매핑을 통하여 관리되고 있지 않은 취약점을 파악하여 클라우드 컴퓨팅의 위험요인을 제시하였다.

• 한국농촌건축학회논문집
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• 제6권3호
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• pp.25-38
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• 2004

The government has made a great effort for the development of rural area. The aim of this study is to analyze the change process and characteristics of the government's rural area development policies implemented so far and present an aid as adequate material to the direction of development policy for rural areas. The rural area development policy had been focused on maintenance of physical infrastructure facilities in the rural areas, pursuing urban convenience led by the government from the 1950s to 1990s. The policy has changed to local residents-led rural area development from the late 1990s to present time. The basic direction of the policy turned into making much of environment-friendliness and promotion of regional activation. The policy was transformed to recognize our rural area and also perceive it pastoral and resting space. In addition, green tourism has emerged as an important theme since 2000. In the rural area development policy, it is the most important to connect it with various development projects, select target areas from the long-term perspective and pursue efficiency through intensified investment of financial resources.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2010년도 한국컴퓨터종합학술대회논문집 Vol.37 No.1(B)
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• pp.126-131
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• 2010

IT 자원의 상호운용성 및 재활용성 등의 장점 통하여 새로운 비즈니스 환경변화에 가장 빠르게 대응할 수 있는 최적의 대안으로 서비스 지향 아키텍처(SOA : Service Oriented Architecture)가 최근 각광받고 있다. 그러나 구현의 복잡성 및 그에 따른 낮은 ROI(Return on Investment) 평가와 같은 SOA의 문제점들을 보완하기 위해 웹 지향 아키텍처(WOA: Web Oriented Architecture)가 제안되었다. 하지만 WOA 또한 보안 및 안정적인 메시지 전달 등의 문제점들을 안고 있다. 본 논문에서는 SOA와 WOA 구현의 핵심 개념을 연구하고, SOA 또는 WOA를 이용하여 서비스를 구현할 경우 중요한 핵심 개념의 복잡도를 AHP(Analytic Hierarchy Process) 기법을 통하여 평가하였다. 이를 통하여 SOA 또는 WOA 구현 시 요구되는 핵심 요구사항의 중요도를 평가하고 개발자에게 미치는 구현 복잡도를 측정할 수 있다.

• East Asian Economic Review
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• 제16권2호
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• pp.117-137
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• 2012

The objective of this article is to examine the characteristic features of contemporary policy-led regionalism in Asia. It identifies the positive and negative features associated with the free trade agreements that have proliferated in Asia during the first decade of the $21^{st}$ century. There has been a marked transformation in Asia's regional architecture in a short span of a decade-and-a-half. The mode and conduct of multilateral trade has been significantly transformed during recent years and Asia could not possibly remain immune to this transformation. The importance of regionalism in multilateral trade has increased steadily. In addition, the trade-investment-services nexus has developed and grown increasingly important. As business firms now manufacture parts of their products across the border, bilateral trade agreements (BTAs), regional trade agreements (RTAs) and free trade agreements (FTAs) of the contemporary period need to take into account the new kind of trade barriers that have been created due to the changing mode of trade. The contemporary regional agreements need to be designed to facilitate the new modes of conducting business and trade. It was understood rather late in Asia that the 'WTO-Plus' FTAs are more functional and result-oriented than their predecessors.

• 국제학술발표논문집
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• The 8th International Conference on Construction Engineering and Project Management
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• pp.409-416
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• 2020

This paper proposes a study measuring productivity improvement by using a type of technology called "Machine Guidance" through work sampling in earthwork. Earthwork is the activity typically on the critical path, indicating that productivity for the activity is critical for managing schedule on time. Thanks to the development of sensing and information system technologies, productivity for earthwork has been improved. While there have been many studies investigating the application of a certain type of technology to earthwork, few studies have measured the productivity improvement and presented how the technology leads to productivity improvement. Based on the thorough literature review, it is hypothesized that Machine Guidance contributes to improving productivity of earthwork by reducing indirect workhours spent for information waiting and inspection. In addition to the literature review, this paper presents a research model to test the hypothesis by using the work sampling technique. By proving and quantifying the productivity improvement from the technology use, this study can help practitioners justify the investment for technology use, which will contribute to the deployment of technology and more effective execution of earthwork.

• International Journal of Computer Science & Network Security
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• 제24권7호
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• pp.123-127
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• 2024

Cloud computing services has gained increasing popularity in recent years for supporting various on demand and scalable services for IT consumers where there is a need of less investment towards infrastructure. While storage architecture of cloud enjoys a more robust and fault-tolerant cloud computing network, such architecture also poses a number of security challenges especially when applied in applications related to social networks, Financial transactions, etc. First, as data are stored and maintained by individual virtual machines so Cloud resources are prone to hijacked. Such attacks allow attackers to create, modify and delete machine images, and change administrative passwords and settings successfully. hence, it is significantly harder to ensure data security. Second, Due to dynamic and shared nature of the Cloud, data may be compromised in many ways. Last but not least, Service hijacking may lead to redirect client to an illegitimate website. User accounts and service instances could in turn make a new base for attackers. To address the above challenges, we propose in this paper a distributed data access control scheme that is able to fulfil fine-grained access control over cloud data and is resilient against strong attacks such as compromise and user colluding. The proposed framework exploits a novel cryptographic primitive called attribute-based encryption (ABE), tailors, and adapts it for cloud computing with respect to security requirements

• 한국환경생태학회지
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• 제24권3호
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• pp.235-248
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• 2010

본 연구에서는 우리나라 생태숲조성 기본계획 수립의 실태를 파악하고, 문제점 및 개선방향을 제시 하였다. 우리나라 생태숲조성 계획의 제한요소로는 입지여건, 지형적 측면, 기존식생 등의 문제가 높은 빈도로 나타났다. 토지이용현황은 사유지의 평균 비율이 29.7% 이었으나 실질적인 사업비의 투자는 되지 않은 것으로 나타났다. 도입빈도가 높은 시설은 기반시설, 건축시설, 휴게시설, 편익시설, 안내시설 등 이었으며, 도입빈도가 낮은 시설은 식물재배시설, 생태시설, 상징시설 등으로 나타났다. 식물 종 보유현황은 500종류 이상을 보유한 곳이 1개소이었고, 산림청이 제시한 생태숲조성 기준의 식물종다양성 기준 이하는 11개소 이었다. 사업비는 시설투자비가 식재비보다 매우 높았으며, 후기투자사업비 보다 초기투자사업비 월등히 많았고, 조성 이후의 유지관리에 대한 예산 계획 수립이 거의 없었다. 산림청이 제시한 생태숲조성의 기본 개념은 충실하게 계획 하고 있었으나 세부적인 도입 계획에서는 이용자 중심 위주로 계획 되어져 생태숲조성 기본 취지에 어긋나고 있었다. 이러한 현상은 생태숲조성을 주관하는 지방자치단체가 사업추진을 위한 과정에서는 산림청이 제시한 내용을 제안하고, 사업이 확정된 이후에는 산림청이 제시한 내용을 대부분 무시하여 전시효과를 위한 생태숲조성 방식으로 변화하기 때문이다. 산림청에서 제시하는 생태숲조성을 위해서는 산림청의 감독이 강화되어야 하고, 지방 자치 단체장, 감독부서, 계획 및 설계자 등 담당자들이 생태숲에 대한 명확한 개념 정립을 하여야 할 것이다.

• 환경영향평가
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• 제16권6호
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• pp.447-465
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• 2007

The purpose of this study is to assess the sustainability in 45 cities of all over Gyeongnam and Gyeongbuk using weights and assessment system developed in leading research. The materials of assessment used statistical data and spatial data were standardized for the systematic result. The assessment score was established using the normal distribution from 25 to 125 for removal of the very smallest and maximum value. According to the results, Tongyeong was assessed the highest by 82.5 score in environmental sustainability index. In economical sustainability index, Pohang, Gumi, Changwon, Yangsan were more than 79 score but Busan, Daegu, Andong were less than 70 score. Ulsan, Geoje, Yangsan were assessed higher in society-institutional sustainability index and Jinju, Munkyeong, Changnyeong were showed higher than other cities by more 79 score in quality of life(QOL)'s sustainability index. In case of integrated sustainability index, Jinju that was the highest sustainability in QOL was assessed by first city. However, Ulsan was assessed the lowest city among others. Therefore cities which have high sustainability will prepare a politic investment program for maintaining current conditions. Cities which have low sustainability will grasp closely the environmental characteristics of urban and present the improvement direction through monitoring continuously. Overall, these results can be used as tools to assess the current cities and predict the future one. It is also necessary to establish a systematic urban planning for livable and sustainable city.

• KIEAE Journal
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• 제14권3호
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• pp.5-13
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• 2014

This paper introduces emergy(spelled with "m") that is a new environmental indicator in architecture, aiming to clarify conflicting claims of building design components in the process of energy-retrofit. Much of design practitioners' attention on low energy use in operational phases, may simply shift the lowered environmental impact within the building boundary to large consumption of energy in another area. Specifically, building energy reduction strategies without a holistic view starting from natural formation, may lead to the depletion of non-renewable geobiological sources (e.g. minerals, fossil fuels, etc.), which leaves a building with an isolated energy-efficient object. Therefore, to overcome the narrow outlook, this research discusses the total ecological impact of a building which embraces all process energy as well as environmental cost represented by emergy. A case study has been conducted to explore emergy-driven design work. In comparison with operational energy-driven scenarios, the results elucidate how energy and emergy-oriented decision-making bring about different design results, and quantify building components' emergy contribution in the end. An average-size ($101.9m^2$) single family house located in South Korea was sampled as a benchmark case, and the analysis of energy and material use was conducted for establishment of the baseline. Adoption of the small building is effective for the goal of study since this research intends to measure environmental impact according to variation of passive design elements (windows size, building orientation, wall materials) with new metric (emergy) regardless of mechanical systems. Performance simulations of operational energy were developed and analyzed separately from the calculation of emergy magnitudes in building construction, and then the total emergy demand of each proposed design was evaluated. Emergy synthesis results verify that the least operational energy scenario requires greater investment in indirect energy in construction, which clearly reveals that efficiency gains are likely to be overwhelmed by increment of material flows. This result places importance on consideration of indirect energy use underscoring necessity of emergy evaluation towards the environment-friendly building in broader sense.

• 한국환경생태학회지
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• 제22권1호
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• pp.11-17
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• 2008

본 연구는 월악산 국립공원을 대상으로 1992년과 2004의 12년간의 차이를 비교할 수 있는 주요 관리체계 항목인 관리목표, 주요 공원관리사업, 토지이용, 관리인원 및 조직, 탐방객 현황, 예산 등을 행정자료를 통하여 분석함으로서, 국립공원 관리정책의 기초자료로 이용하고자 하였다. 공원관리사업은 유지를 위한 공원시설의 단순 관리나 단속의 수준을 벗어나 탐방객의 만족도를 높이는 프로그램 개발로 발전하고 있었다. 공원내 토지이용의 변화는 거의 없으나, 중심적인 보전지구인 자연보존지구가 대폭 확대되어 진 것으로 나타났다. 관리인원 및 조직에 있어 관리업무나 이용객의 확대에 비해 조직 및 인원의 증가가 전혀 없는 것으로 나타나 관리자의 업무량이 심화되고 있음을 보여주었다. 세출예산의 집행은 인력에 지출되는 비용이 68.2%로 매우 높게 나타나 인력에 의한 관리구조를 가지는 것으로 나타났다.