• 마케팅과학연구
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• 제15권3호
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• pp.93-116
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• 2005

본 연구는 온라인 쇼핑몰을 이용하는 소비자의 외부정보탐색노력에 영향을 미치는 요인을 정보경제학적 관점, 심리적 관점, 웹사이트 이론 관점으로 구분하여 탐색하였으며, 세 가지 이론을 통합하는 통합모델을 설계하였다. 통합 모델을 실증 분석한 결과, 온라인 쇼핑몰을 이용하여 제품을 구매하는 소비자의 외부정보탐색노력정도는 탐색동기, 탐색이익 등에 직접적인 영향을 받는 것으로 검증되었다. 한편 탐색동기는 탐색이익, 구매관여에 의하여 영향을 받는 것으로 검증되었다. 그리고, 탐색이익은 구매관여, 구조적간결성, 탐색의 편리성, 신뢰성에 직접적인 영향을 받으며, 탐색비용은 구매관여, 시간압박성, 구조적 간결성, 탐색의 편리성, 신뢰성에 직접적인 영향을 받는 것으로 확인되었다. 본 연구는 이와 같은 결과를 바탕으로 온라인 쇼핑몰의 관리에 대한 이론 및 관리적 시사점들을 제안하였다.

• 경영과정보연구
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• 제28권4호
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• pp.67-92
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• 2009

본 연구에서는 1998년부터 2008년까지 우리나라 거래소에 상장되어 있는 기업들을 대상으로 기업의 내적인 투자기회, 외부금융의존도 및 타인자본비용이 기업의 자본투자의사결정에 미치는 영향을 분석하였다. 기업의 투자의사결정은 거시적인 경제정책에서도 영향을 받지만 기업 자체가 처한 상황인 영업경쟁력, 자본시장 이용조건, 자본비용 등의 요인에 의해서도 영향을 받다. 본 연구에서는 선행연구에서 초점이 되었던 법인세율이 기업의 자본투자에 미치는 영향을 통제한 상태에서 기업의 투자결정요인을 기업적 측면에서 분석하였다. 분석결과는 다음과 같다. 첫째, 기업의 투자기회는 자본투자에 양(+)의 영향을 미치는 것으로 나타나 기업의 영업 경쟁력인 투자기회가 많을수록 기업의 투자는 촉진되는 것으로 나타났다. 그러나 이러한 영향은 외부금융의존도가 높을수록 약화되며, 투자기회가 자본투자에 미치는 영향이 타인자본비용이 높을수록 약화되는 것으로 나타났다. 둘째, 기업의 외부금융의존도와 자본투자는 양(+)의 상관관계가 있는 것으로 나타나 외부금융의존도가 높은 기업의 경영자들이 자본투자에 적극적임을 암시한다. 그러나 타인자본비용이 높아질수록 투자기회가 자본투자에 미치는 영향의 정도는 낮아져 투자기회가 많다고 할지라도 타인자본비용이 높은 경우에는 자본투자에 저해요소가 됨을 암시한다. 셋째, 기업의 타인자본비용이 높을수록 자본투자는 낮아지는 것으로 나타났으며, 유가증권 시장 표본의 경우 투자기회가 자본투자에 미치는 영향은 타인자본비용이 높을수록 작아지는 것으로 나타났다. 본 연구에서는 기업의 내적인 요소가 자본투자에 미치는 영향을 분석하였다는 점에서 의의가 있으며, 향후에는 자본투자에 영향을 미치는 다양한 요인들을 밝혀내려는 시도가 필요할 것으로 보인다.

• 한국철도학회지
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• 제9권2호
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• pp.19-24
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• 2006

Green gas emissions Trading System(ETS) came into effect in the Europe last year 2005. All transport modes have tried to reduce green gas emission and EU member countries are promoting the use of environmental friendly transport mode to avoid economic loss due to green gas emission. Besides ETS, rapidly rising of oil price and peak oil urge to invest more in the environmental friendly public transport mode and to discourage the use of private cars. The operation of KTX is estimated to bring external cost reduction up to 570 bil. won in 2004 based on European external unit costs of transport modes. This result implies that the expansion of high speed rail network and reconsideration of East-West high speed rail network which is not considered because of weak economic validity is required.

• ETRI Journal
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• 제37권4호
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• pp.787-792
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• 2015

To accomplish a high-speed test on low-speed automatic test equipment (ATE), a new instruction-based fully programmable memory built-in self-test (BIST) is proposed. The proposed memory BIST generates a highspeed internal clock signal by multiplying an external low-speed clock signal from an ATE by a clock multiplier embedded in a DRAM. For maximum programmability and small area overhead, the proposed memory BIST stores the unique sets of instructions and corresponding test sequences that are implicit within the test algorithms that it receives from an external ATE. The proposed memory BIST is managed by an external ATE on-the-fly to perform complicated and hard-to-implement functions, such as loop operations and refresh-interrupts. Therefore, the proposed memory BIST has a simple hardware structure compared to conventional memory BIST schemes. The proposed memory BIST is a practical test solution for reducing the overall test cost for the mass production of commodity DDRx SDRAMs.

• 대한환경공학회지
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• 제30권12호
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• pp.1245-1254
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• 2008

지구온난화 영향의 사회적 비용(외부비용) 추산 방법을 제안하는 것이 이 연구의 목적이다. 지구온난화 영향의 피해를 받는 대상을 정의하기 위하여 엔드포인트 접근방법(endpoint approach)을, 피해를 받는 대상에 대한 경제적 가치를 산출하기 위하여 컨조인트 분석(conjoint analysis)을 각각 적용하였다. 보호대상에 대한 사회적 선호도와 지불의사금액(Willingness to Pay; WTP)을 측정하여 보호대상에 대한 경제적 가치를 추정한 결과 인간 건강은 62,261,700원/DALY(년)(장애보정생존연수), 사회 자산은 10,000원/10,000원이었다. 또한 각 보호대상에 대한 단위 피해를 정량화 한 피해계수(damage factor)와 인간 건강과 사회 자산에 대한 경제적 가치를 곱하여 GHG의 비용계수(cost factor)를 산출하였다. 온실가스 중 CO$_2$의 경우 비용계수는 13.52원/kg(13,520원/ton)으로 산출되었다. 제품 및 서비스로 인해 배출된 GHG 목록 결과값과 각 온실가스의 비용계수를 곱하여 지구온난화의 외부비용을 산출하였다.

• Asia pacific journal of information systems
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• 제12권3호
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• pp.213-233
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• 2002

Recently, a lot of companies intend to make spin-offs as the Internet usage is proliferating in the business area. A spin-off means a small but autonomous company which is thought to show higher profitability rather than it stays under the influence of a mother enterprise. To prove our hypotheses, we collected questionnaire data from 104 companies considering spin-offs. From experiments with Factor Analysis, we found that there exist four factors which decision-makers should consider before deciding spin-offs such as competence of unit, competence of mother company, competence of spin-off company, and support of mother company. After massive experiments with Regression Analysis we also found that there are significant three performance factors such as competence of unit, competence of spin-off company, and support of mother company. The survey also asked about three potential strategies that they may have been following for achieving business objectives: Cost leadership, Focus, and Differentiation, Six benefits factors emerged from this study: External competitiveness, Internal competency, Productivity, Change, Cost saving, and Improvement. External competitiveness was the most important benefit, and it predicted a Differentiation and Focus strategy. Productivity and Improvement also predicted a Differentiation strategy. External competitiveness, Change, and Cost saving predicted a Cost leadership strategy. However, organizations followed Differentiation and Focus strategies significantly more than Cost leadership. The assessment thus sheds light on the link between information strategy and spin off. We hope that based on our results, many companies considering a spin-off can make a right decision and expect higher performance in a turbulent business environment.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2017년도 춘계 학술논문 발표대회
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• pp.272-273
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• 2017

As businesses put a greater emphasis on outward appearances, the demand for external window cleaning has been on the rise. However, with the conventional labor-intensive window cleaning method, it is hard to meet this demand. Therefore, this study proposes a Life Cycle Cost (LCC) analysis model for a guiderail-type cleaning robot, and estimate the LCCs of the conventional method and the cleaning robot. The findings of this research are expected to serve as a guide for future development of a cleaning robot.

• 환경영향평가
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• 제14권5호
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• pp.291-303
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• 2005

Impact pathway analysis(IPA) is a bottom-up approach to estimates health and environmental risks from emissions of classical pollutants (eg. $PM_{10}$, $SO_2$, $NO_x$ and CO). The model starts from the emission rates of facility, calculates the yearly mean concentrations of pollutants at the ground level using atmospheric dispersion models. After this, proper epidemiological exposure-response functions are applied to determine the impact on the receptors. Finally the methodology can monetise the calculated physical impact on the basis of selected economic evaluation. The aim of this study is to evaluate an external cost of virtual point source in Suwon area using IPA. The results shows minor modification of local input data can make it possible to apply the model to Suwon area.

• International Journal of Aeronautical and Space Sciences
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• 제9권1호
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• pp.147-161
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• 2008

In this paper, fine attitude estimation using low-cost sensors for attitude pointing missions of spacecraft is addressed. Attitude kinematics and gyro models including bias models are in general utilized to estimate spacecraft attitude and angular rate. However, a linearized model and a transition matrix are derived in this paper from nonlinear spacecraft dynamics with external disturbances. A Kalman filtering technique is applied and offers relatively high estimation accuracy under dynamic uncertainties. The proposed approach is demonstrated using numerical simulations.

• 한국환경과학회지
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• 제13권10호
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• pp.911-919
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• 2004

The purpose of this research was evaluated economical effect to apply alternative external carbon source. Conventional activated sludge process in municipal wastewater treatment plant was adapted and introduced to Biological nutrient removal processes to meet the newly enforced effluent quality standard for nutrient removal in Korea. Low $COD/NH_4^+-N$ ratio and higher nutrient concentration of influent characteristics force to inject external carbon source for denitrifying recycled nitrate. In the most case, methanol was used as external carbon source. But Methanol is expensive and very dangerous in handling. So we could find cheaper and safer external carbon source substituted methanol in last study. This alternative external carbon source is named RCS(recoverd carbon source) and a by-product of fine chemical product at chemical plant. When RCS was applied real municipal wastewater treatment plant, average $55\~65\%$ of T-N removal efficiency, 8.8mg/l of effluent T-N concentration, 11.3mg/l of effleunt COD concentration were obtained without effluent COD increase as against used methanol. To apply RCS in municipal wastewater treatment plant obtain approximately $\74.5%$ expenditure cost reduction in comparison with methanol dosage cost.