• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.306-310
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• 2002

Agreements such as the Uruguay Round and the New Round have dramatically changed international construction markets. The globalization of the construction industry provides tremendous opportunities for construction industry, while it generates the complex skeins of risks to contractors wllo would like to expand into new foreign markets. According to ENR, recently about $13.9\%$ of contractors that entered international construction markets have experienced loss in projects and furthermore, their average profits have also declined continuously. Accordingly, contractors need a strategic risk management system for assessing various risks and improving Profitability for overseas construction projects. This paper discusses the long-term trend of profitability performed by Korean contractors in international construction markets during the last 35 years. Then, it identifies the key factors that affect the profitability significantly through the structured surveys from 59 actual overseas projects. These factors can be used for developing a risk management system for international construction project.

• Journal of Climate Change Research
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• v.1 no.2
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• pp.163-177
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• 2010

This study analyzes the economies of photovoltaic systems in an apartment complex of 1,185 households, in cases of feed-in tariff and subsidy for solar home program of the government. When including the revenue only from electricity sales, NPVs of subsidy and that of feed-in tariff are -560 million KRW and -87 million KRW respectively. With the avoided social cost included without the revenues from CERs, NPVs of subsidy and feed-in tariff are -556 million KRW and -84 million KRW respectively. With the revenues from CERs, NPV of subsidy is -526 million KRW and NPV of feed-in tariff is -54 million KRW. As results of sensitivity analysis based on the changes in capital costs and discount rates, while all scenarios with subsidy including the revenues from CERs are not commercially viable, all scenarios with feed-in tariff exclusive of the revenues from CERs are commercially viable when discount rate is less than 7.2% or capital cost is less than 6,840 thousand KRW/kW. In the cases that include the avoided social cost, while all scenarios with subsidy including the avoided social cost as well as the revenues from CERs are not commercially viable, all scenarios with feed-in tariff are commercially viable without the revenues from CERs when discount rate is less than 7.2% or capital cost is less than 6,856 thousand KRW/KW. The results indicate that the changes in discount rates do not influence the revenues from CERs, but the revenues from electricity sale. Considering that the number of apartment complex and the positive environmental and social benefits from PV system, government needs to promote its diffusion.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.603-605
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• 2022

현재 세계적으로 e스포츠 시장의 규모가 꾸준히 성장하고 있지만 프로 e스포츠 구단부터 e스포츠 이벤트 대행사까지 각종 e스포츠 유관 기업들은 산업 규모에 걸맞는 수익을 창출 하기는 커녕 오히려 적자를 기록하는 경우를 더욱 자주 찾아볼 수 있다. 이러한 상황 속에서 사업적 다각화를 위해 프로 선수들을 주류로 다루는 e스포츠 산업뿐만 아니라 다양한 아마추어 e스포츠 산업을 다루는 사업 모델 또한 주목을 받고 있다. 본 논문에서는 그 중 각종 논-엔데믹 기업 내에서 진행되고 있는 사내 e스포츠 토너먼트들이 업무 효율성에 얼마나 긍정적인 영향을 미치는지에 대해 연구함으로서 새로운 수익 모델에 대한 검증, 더 나아가 사업 타당성에 대해 검토해 보도록 한다.

• Journal of Labour Economics
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• v.26 no.3
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• pp.29-47
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• 2003

The study analyzes how effective the Government Internship Program has been on accumulation of the human capital. The Program was designed under the foreign exchange crisis to support the new, but unemployed graduates with MA or Ph.D degree in the science and the engineering fields. The survey data is collected from the participants in the Program. The Tobit model is estimated to find the economic effects of the Program in terms of the rate of return of investment in the human capitals of the intern researchers. Considering that the Program is tentative and that the human capitals of the participants are easily obsolescent, the rate of return is observed to be substantially large. These results imply that the Internship Program has been successful in terms of providing not only the researchers with the opportunity to accumulate the human capital by means of the on-the-job-training, but also the institutes or the firms with the opportunity to utilize the high-quality researchers at the low cost.

• Information Systems Review
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• v.8 no.2
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• pp.51-72
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• 2006

This study investigates the typology of Internet business models according to revenue sources, and empirically tests how the revenue sources of each Internet business model are different each other. This study consists of the following two steps. First, AHP(Analytic Hierarchy Process) is adopted in developing the influential factors(indexes) for the profitability of each Internet business model and the weight score of each factor. The questionnaire for AHP consists of 47 questions on 9-point scales, and was distributed to 10 experts on Internet business model. Expert Choice program has been used for analysis. Second, the questionnaire to survey the current profitability of each Internet business model was developed on 5-point scale. In order to analyze the actual revenue quality and source of Internet business models, we used MANOVA and ANOVA. This study contributes to develop the desirable revenue or profit model of each Internet business model, and also provides a reference in evaluation of the revenue quality of Internet business models.

• Plant Journal
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• v.11 no.4
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• pp.28-37
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• 2015

본 논문에서는 2012년 시행된 신재생에너지공급의무화제도(RPS)에 따른 민간발전사들의 RPS 의무이행 현황을 알아보고 신재생에너지 공급인증서의 발급량 부족 및 거래시장에서의 심한 가격변동을 발전사업자들의 RPS 이행시 장애요인으로 분석하였다. RPS시행 이전에 추진하여 최근 준공한 동두천복합발전소에 대한 RPS이행방안 구성결과 연평균 약 334억원의 의무이행비용이 산출되었으며, 해당비용을 당초 사업타당성 검토 기초자료에 반영한 결과 내부수익률이 계획대비 31.8% 저하됨을 알 수 있었다. 신재생에너지 의무공급량의 비율이 해마다 증가하여 2024년부터는 전년도 발전량의 10%를 신재생에너지로 공급해야 하는데 RPS 의무공급 대상자로의 편입 초기부터 10%의 의무공급량을 이행해야 하는 신규 발전소의 경우 의무이행비용 과다로 사업성은 더욱 낮아지므로 의무공급량의 비율을 기존의 12단계에서 17단계로 완화하는 방안을 제시하였다. 즉, 동두천복합발전소의 이행비용을 기준으로 최초 2%부터 매년 0.5%씩 점진적으로 10%까지 높였을 때 내부수익률은 6.23%로써 처음부터 10%의 비율로 공급할 경우 산출한 내부수익률 4.18%보다 약 49%의 사업성 향상 효과를 얻을 수 있어 제도개선이 민간발전사업 촉진에 기여할 것으로 판단된다.

• Korean Journal of Construction Engineering and Management
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• v.16 no.2
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• pp.65-76
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• 2015

The Clean Development Mechanism (CDM) is the multi-lateral 'cap and trade' system endorsed by the Kyoto Protocol. CDM allows developed (Annex I) countries to buy CER credits from New and Renewable (NE) projects of non-Annex countries, to meet their carbon reduction requirements. This in effect subsidizes and promotes NE projects in developing countries, ultimately reducing global greenhouse gases (GHG). To be registered as a CDM project, the project must prove 'additionality,' which depends on numerous factors including the adopted technology, baseline methodology, emission reductions, and the project's internal rate of return. This makes it difficult to determine ex ante a project's acceptance as a CDM approved project, and entails sunk costs and even project cancellation to its project stakeholders. Focusing on hydro power projects and employing UNFCCC public data, this research developed a prediction model using logistic regression and CART to determine the likelihood of approval as a CDM project. The AUC for the logistic regression and CART model was 0.7674 and 0.7231 respectively, which proves the model's prediction accuracy. More importantly, results indicate that the emission reduction amount, MW per hour, investment/Emission as crucial variables, whereas the baseline methodology and technology types were insignificant. This demonstrates that at least for hydro power projects, the specific technology is not as important as the amount of emission reductions and relatively small scale projects and investment to carbon reduction ratios.

• The Korean Journal of Financial Studies
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• v.5 no.1
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• pp.213-236
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• 1999

최근 우리 나라는 금융환경의 변화가 진전됨에 따라 보험산업에도 변화가 일어나기 시작했다. 이에 따라 보험산업은 지급능력 및 수익성에 관심을 갖게 되었다. 이에 본 연구에서는 국내 생명보험회사의 투자수익율이 재무제표에 나타난 요인에 의해 어떻게 결정되는가를 살펴봄으로써 수익률 결정요인을 찾는데 있다. 본 연구에서 사용한 자료는 생명보험회사 33개사 중에서 외국사를 제외한 29개사를 선택하여 수집하였다. 분석 기간은 1989년부터 1996년까지이며, 생명보험회사는 기존사, 지방사, 내국사, 합작사로 구분하였다. 분석결과, 시차별 분석에서는 결정계수가 기간이 짧을수록 높게 나타났고 예측된 부호는 잉여금, 사업비율이 반대로 나타났다. 그룹별 분석에서는 기존사, 내국사, 지방사, 합작사의 모델이 각각 유의수준 5%에서 유의하였고 결정계수는 높게 나타났다. 예측부호는 자산증가율과 사업비율, 수입보험료 증가율(기존사 제외), 부채/자본비율(기존사 제외)이 일치하지 않았다. 경영평가제도에 의한 분석에서는 결정계수가 높은 편이며, 유의수준 5%에서 유의하였다. 자본증가율은 예측된 부호와 일치하나 영향력이 거의 없는 것으로 나타났다. 유동성 비율은 신설사(내국사, 지방사, 합작사)가 예측부호와 반대의 경우로 나타났다. 또한 총자산은 투자수익율과 규모에 의해 결정되지 않은 것으로 나타났다. 모집인은 투자수익율에 유의적이나 직접적인 투자요인이 아닌 것으로 분석되었다. 기존연구와 비교해 볼 때, 한국 생명보험회사의 잉여금과 효력상실 해약율은 기존연구 모형과 예측부호가 일치하나 나머지 변수는 그룹간 다소 상이하게 나타났다. 결론적으로 본 연구의 분석 결과, 예측부호는 다소 차이가 있는 것으로 나타났고, 유의적인 변수는 없는 것으로 분석된다.

• Korean Journal of Construction Engineering and Management
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• v.18 no.4
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• pp.3-16
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• 2017

Forecasting cash flow is very important but is difficult and complicated to analysis in high-rise development projects. And An expected value which was forecasted on the early stage is likely to fluctuate due to uncertainties around such complicated huge project to consider the probable uncertainty. There are not objectified method which are able to cope with uncertainty of project, and feasibility study based on selected financial analysis does not include liquidity of cash flow. Through such a stochastic method, developer can cope with cash flow fluctuation and set up a financial plan. Also this study is meaningful for laying the foundation for high-rise development project and feasibility study as well as the suitability and accuracy of feasibility study. Analysis showed that NPV and IRR include residential apartments shows surplus revenue as return of apartments offset deficit of hotel and office. Factors influencing the project feasibility for high-rise development project are sales account of $1^{st}$ year and annual vacancy rate of office.

• Korean Journal of Construction Engineering and Management
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• v.16 no.4
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• pp.50-59
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• 2015

While the international construction industry for Korean companies have grown in market size exponentially in the recent years, the profit rate of small and medium sized construction companies (SMCCs) are incomparably lower than those of large construction companies. Furthermore, small and medium size companies, especially subcontractor, lacks the judgement of project involvement appropriateness, which leads to an unpredictable profit rate. Therefore, this research aims to create a profit rate prediction model for the international construction project focusing on SMCCs. First, the factors that influence the profit rate and the area of profit zone are defined by using a total of 8,637 projects since the year 1965. Seconds, an extensive literature review is conducted to derive 10 influencing factors. Multiple regression analysis and corresponding judgement technique are used to derive the weight of each factor. Third, cased based reasoning (CBR) methodology is applied to develop the model for profit rate analysis in the project participation review stage. Using 120 validation data set, the developed model showed 11% (14 data sets) of error rate for type 1 and type 2 error. In utilizing the result, project decision makers are able to make decision based on authentic results instead of intuitive based decisions. The model additionally give guidance to the Korean subcontractors when advancing into the international construction based on the model result that shows the profit distribution and checks in advance for the quality of the project to secure a sound profit in each project.