• 한국BIM학회 논문집
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• 제4권2호
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• pp.10-16
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• 2014

Interoperability in the BIM construction information is the information management technology, which allows user to control and effectively use construction's lots of information that occur and disappear through construction life cycle. And it is information interchange through accurate and rapid decision-making to get the participants' wanted value. In this study, we will present plan to improve productivity and quality through effective BIM operation. And we will present improvement plan after deduce existing process's problem.

• 한국건설관리학회논문집
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• 제13권5호
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• pp.25-34
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• 2012

본 연구는 주택 후분양제도를 도입한지 6년여 기간이 경과되는 현 시점에서 제도시행의 취지 및 효과를 점검하고, 공급자 관점에서 분양시기에 따른 수익성 변화를 분석하여 그 정도를 파악하였다. 서울시 공동주택 사업을 대상으로 사례분석 하였으며, 분양수입의 현재가치분석, 민감도분석, 분양가를 예측한 현재가치분석을 실시하였다. 분석결과 첫째, 선분양제가 후분양제보다 5.1%~6.2% 수익성이 높았고, 선분양의 4가지 안(착공후 즉시, 건설공정 20%, 40%, 60%) 가운데 착공과 동시에 계약금을 회수하는 안의 분양수입이 가장 높았다. 둘째, 할인율 증가와 분양수입 감소는 정비례하였으며, 할인율이 커질수록 공급자관점에서의 분양수입은 감소하였다. 셋째, 분양시기에 따른 분양가격 변동을 감안하여, 기본형건축비의 변동폭을 고려한 분양수입의 현재가치는 선분양방식이 후분양방식에 비해 2% 내외의 미미한 수준에서 다소 높았다. 본 연구는 분양시기에 따른 수익성을 공급자 관점에서 명확하게 계량화하여 제시하였고, 분양시기 변화에 따른 분양가 변동을 고려하여 분양수입을 산출하였다는 점에 의의가 있다.

• 한국컴퓨터정보학회논문지
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• 제25권2호
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• pp.221-229
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• 2020

화장품뷰티산업이 차세대 핵심 산업으로 성장하면서 산업화센터 설립이 필요한 상황이지만 투자규모의 적정성과 타당성을 검증하지 못하면 재정 부담으로 이어질 수 있다. 본 연구에서는 산업화센터의 건립 사업비와 시설 현황을 검토하여 비용추정, 수익추정, 추정손익계산, 영업현금흐름의 추정 결과를 근거로 경제적 타당성을 분석하고자 한다. 수익추정 기준은 연구사업 예상 수주(24억)의 90%, 시험장비(구축비 45억)의 임대율 12%로 적용하여 분석한 결과, 편익/비용비율은 1.02, 순현재가치는 '0'원보다 높으며, 내부수익률 또한 사회적 할인율 5.06%로 세 가지 분석 방법 모두에서 기준을 초과하여 경제적 타당성이 있는 것으로 나타났다. 따라서 화장품뷰티 산업화센터 건립이 경제적 타당성을 갖추기 위해서는 연구사업 수주를 90% 이상, 장비임대 수익률은 12% 이상 유지가 필요하며, 사업수익 다양화를 위한 전략적 접근이 필요하다.

• 한국기후변화학회지
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• 제8권1호
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• pp.21-30
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• 2017

Recently, There has been much discussed about unused space. This space can be used in a variety of ways. Utilizing it as a facility, craft shop, and utilizing renewable energy generation facilities. Especially, in terms of climate change should be supplied renewable energy. Renewable energy needs to be developed in terms of responding to climate change, and the recent Paris agreement is also emphasizing the importance of renewable energy. In particular, renewable energy needs to be widely disseminated. And renewable energy is limited space. In this regard, idle land can provide opportunities for securing new renewable energy generation facilities. The introduction of new and renewable energy facilities in idle space can enhance the self-sufficiency rate of the local community, which is significant in terms of responding to climate. In this study, to investigate the possibility of utilizing a unused space for a photovoltaic power generation facility, we investigated the amount of electricity which could be generated through photovoltaic power generation, and the economic effects, using a RETScreen model. The results showed that 9,738 MWh of power can be generated and that $4,540tCO_2eqcan$ be saved. Regarding the economic effect, the net present value of the facility was shown to be 2,247,389,020 KRW. As the net present value was shown to be positive, we believe that the installation of a photovoltaic power generation facility in an unused space would have a positive economic effect. We found the net present value following the fluctuation of the SMP price to be positive, though there was some variation. However, as the economic efficiency was shown to be low because the net present value in relation to the maintenance costs was negative, we believe that maintenance costs must be taken fully into account when evaluating economic efficiency. In particular, as subsidies can be used to cover maintenance costs which must be factored into photovoltaic power generation, we believe that photovoltaic power generation can have an economic effect. Because spaces not currently in use can have a positive economic effect as renewable energy power generation facilities, and can also contribute to the reduction of greenhouse gas emissions, unused spaces are thought to greatly help local governments to cope with climate change as well as reinforcing their related capabilities. We believe our study will help local governments with decisions relating to unused real estate utilization in the future.

• 대한조선학회지
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• 제19권1호
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• pp.3-14
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• 1982

In this paper, the sway added mass of a rectangular cylinder in a restricted water is considered by applying Hamilton's principle as the frequency tends to zero. The present method is an extension of Isshiki's method proposed in 1978. In the present method, it is assumed that the fluid velocity distribution in each subdomain of the fluid can be represented by higher order polynomials while Isshiki assumed linear velocity distribution. The fluid flow is assumed as a rotational motion in the present analysis. However, the results obtained from the present method show good agreement with Bai's numerical results for the case of large clearances between a canal wall and a cylinder. From Kelvin's minimum energy theorem, we can see that the value of sway added mass obtained from the present method approaches the upper bound. The approximate formula obtained in the present study takes a simple form which consists of the dimensions of the canal and the cylinder. The present formulae are derived for the cases of a rectangular cylinder swaying at the center of a narrow or wide canal relative to a cylinder, at off-center location in a canal, and in the restricted water with a single wall. From the results of numerical calculation, it is concluded that the sway added mass in restricted waters is more affected by water depth than clearance between a wall and a cylinder.

• Journal of Positioning, Navigation, and Timing
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• 제5권3호
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• pp.109-118
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• 2016

The present paper proposes a method that can estimate a roll rate of spinning vehicles utilizing GPS receivers. The proposed method analyzes a relation between received signal and correlation value and utilizes a phenomenon that received signal power that changes according to a signal incident direction affects a correlation value. That is, a roll-rate estimation method using zero crossing detection method for correlation value, which has sinusoidal periodicity according to rotations of vehicles, is proposed. A correlation value in real environments experiences a jitter so that the proposed method includes a pre-processing filter and detection threshold setting way is also considered to reduce the effect of received signal power. In order to verify the operation of the proposed method and analyze the performance, a signal generator and software-defined receiver (SDR) are designed. The signal generator generates intermediate frequency (IF) signal by taking the rotation of vehicles, antenna gain, and signal power into consideration, and a correlation value is acquired by taking the generated IF signals into consideration. Using the generated correlation value, the operation of the proposed roll rate estimation method is verified and the performance is analyzed.

• 복식
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• 제24권
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• pp.193-203
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• 1995

The objective of this research was to study the optical illusion effect and the difference of image of textile pattern design. This research also tried to show the more useful method to make stimulus by computer simulation and to present quantitative data. For the experiment, 3 design variable were selected from design principal book as follows : size, arrangement and value harmony of motive. Size of motive variable was divided into 3 level so by use of check & dot pattern, arrangement of motive variable was manipulated to vias direction for check pattern and value harmony between motive & base color was classified into similar value harmony and contrasting value harmony. Visual stimuli which same model was wearing each design were created by ENVISION program. This photographs were given to evaluating panels, Then panels compared experiment design by slim effect and evaluated for 5-sementic differential scale expressing clothing image. The results were as follows : 1) There were significant difference is slim effect, clothing image as simplicity and boldness according to size of Motive. 2) Arrangement of motive for check pattern had significant effects on slim , clothing images as activity and attractiveness. 3) Case of low value base color and high value dot color has significant high score on slim effect, activity, attractiveness, boldness and youthful image.

• 한국경제지리학회지
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• 제9권2호
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• pp.211-224
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• 2006

본 연구는 가상적 가치추정법(contingent valuation method)을 이용하여 도시자연공원의 가치를 평가 분석하였다. 본 연구는 남산, 관악산 및 팔달산을 연구대상지로 선정하여 자원가치 즉, 가상적 가치추정방법(CVM)에 의해 인당 평균 보전가치액 및 자원의 전체 보전가치를 측정하였다. 분석결과에 의하면 대도시 자연공원 즉, 관악산, 남산, 그리고 팔달산의 자원가치는 각각 790원, 1,390원, 그리고 620원으로 나타났다. 인당 평균 보전가치에서는 남산이 타 공원보다 약 2배 정도 높았으며, 남산, 관악산 및 팔달산의 순으로 나타났다. 보전가치중 선택권가치, 존재가치, 그리고 유산가치의 비중을 살펴볼 때 선택권가치는 20%대, 존재가치는 30%대, 그리고 유산가치는 40%대의 비중을 보이고 있어 유산가치, 존재가치 그리고 선택권가치 순으로 나타났다.

• 복식
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• 제66권5호
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• pp.99-112
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• 2016

The purpose of this study is to examine the higher value-added characteristics of tailored jacket designs, which are major items of French luxury brands, in an effort to raise the competitiveness of domestic fashion designs. The characteristics of the jacket designs from the 1940s to the 1970s, the golden age of Haute Couture, were examined. Based on this, the characteristics of the higher value-added expressions of the luxury brands were established by analyzing the tailored jacket designs that appeared in the Paris collection after 2010. The results are as follows: the characteristics were categorized into 'traditional value expression,' 'conceptual value expression,' 'retro value expression,' and 'creative value expression.' Traditional value was expressed as the representation of the styles inherent to the golden age of the Haute Couture houses, and the status of the luxury brands with history was represented by equally arranging the size and characteristics of the elements of the designs related to jacket silhouette. Conceptual value was reestablished as contemporary identity into which the traditional ideology of the houses and the present designers' sentiments were grafted by developing the designs with the theme containing the identity of the past Haute Couture houses. Retro value was utilized as the strategy to differentiate the luxury brands with long history from contemporary products. Creative value was expressed as tailored jackets with new concepts of shape variation and usage conversion by combining creative sentiments with the high quality techniques of Haute Couture and appears to be able to create a new consumption market of luxury brands in the global fashion market.

• 한국도서관정보학회지
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• 제49권3호
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• pp.133-168
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• 2018

이 연구는 공유경제의 특징과 편익 가치 등에 관한 이론적 논의와 검토과정을 통하여 공유경제가 가지는 잠재력과 가치를 분석하고, 도서관의 기능과 역할을 공유경제의 가치 측면에서 비교 분석하여 공유경제 환경에서 도서관의 역할을 제시하고자 한다. 이를 위해 공유경제로부터 창출되는 가치를 경제적 가치, 사회적 가치, 커뮤니티 가치, 기술적 가치, 환경적 가치 등 5가지로 구분하여 공유경제의 잠재적 가치와 도서관의 역할, 기능, 가치가 유사함을 제시함으로써 이를 기반으로 공유경제시대에 도서관의 공유가치 실현을 위한 기능과 역할을 제시하였다. 연구 결과, 공유경제의 경제적 가치를 실현하는 도서관의 물건, 공간 공유, 사회적 가치를 실현하는 도서관의 지식정보서비스, 교육, 콘텐츠 공유, 커뮤니티 가치를 실현하는 도서관의 네트워크, 경험 재능 공유, 기술적 가치를 실현하는 신기술과 편리성의 공유, 그리고 환경적 가치를 실현하는 도서관의 친환경성으로 도출 및 제시하였다.