• 국제지역연구
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• 제14권2호
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• pp.3-23
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• 2010

본 연구의 목적은 비시장재화인 철새도래지 을숙도의 가치를 추정하는 것이다. 을숙도는 전 세계적인 생태관광 명소가 되었다. 그리고 을숙도의 환경 복원 작업은 막대한 비용이 소요되고 있다. 일반적으로 정책 판단에 의한 비용 투입은 편익이 사회적 비용을 초과할 때 정당할 수 있다. 을숙도는 문화관광과 같은 외부효과가 있으나, 이를 시장가치로 추정하는 것은 매우 어렵다. 본 연구에서는 단일양분형 가상가치평가법(Contingent Valuation Methods)을 이용하여 을숙도의 가치를 추정하고자 한다. 분석결과에 의하면, log-narmal 모형의 평균 지불의사액(Willingness to Pay : WTP)과 절단된 평균 WTP는 각각 5,240원, 3,374원이며, log-logistic 모형의 평균지불의사액과 절단된 평균 WTP는 각각 5,888원, 3,232원으로 추정되었다. log-narmal 모형의 절단된 평균 WTP에 기초한 연간 총편익 가치는 3,870백만원이며, Log-logistic 모형의 경우는 4,040백만원이다. 본 연구의 결과는 공공재 가치의 중요성을 인식하는 정책 입안자 및 개발자에게 유용한 가이드를 제공할 것이다.

• Korean Chemical Engineering Research
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• 제61권1호
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• pp.89-96
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• 2023

동적 선형 블록과 정적 비선형 블록이 직렬로 연결되어 있는 Wiener형 비선형 모델은 여러 화학 공정의 동특성을 묘사하는데 널리 사용되는데, Wiener형 비선형 공정의 모델 확인은 다소 긴 공정 활성화 데이터가 필요하다. 본 연구는 이러한 단점을 보완하기 위하여 단일 계단 응답으로부터 Wiener형 비선형 공정 모델을 찾아낼 수 있는 새로운 모델 확인 방법을 제안한다. 제안된 방법은 계단 응답의 초기 응답으로부터 선형 동적 블록의 예측 응답을 얻어 선형 동적 블록의 모델을 확인하고, 이어서 비선형 정적 블록의 모델을 확인한다. 본 방법은 단일 계단 응답만을 사용하여 공정 모델 확인을 위해 필요한 공정 응답을 얻는 과정에서 시간과 비용적으로 큰 이득을 얻을 수 있다. 제안된 공정 확인 방법의 성능은 대표적인 Wiener형 비선형 공정인 pH 적정 공정과 액위 공정을 대상으로 검증되었다.

• 수산경영론집
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• 제29권1호
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• pp.121-137
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• 1998

This study was conducted to examine the economic evaluation of the newly developed fish meal analog (BAIFA-M) in Korean rockfish feed. A raw fish feed (MP) and two commercially formulated diets (EP) were employed to compare weight gain (WG), feed conversion ratio (FCR) and survival rate (SR) from the sea cage culture system. By using the economic model in the practical sea cage culture system, feed cost, production cost and gross profit per kg production, rate of profit to gross revenue (RPGR), and internal rate of return (IRR) were calculated based upon the results of the experiment and the information of the private aquaculture farm (Young Chang) in Tong young, Korean. IRR criteria is one of the popular economic feasibility analysis methods applicable far aquaculture industry. This is an economic evaluation method to compare the given interest rate or the discount rate with IRR which can be calculated by the difference between the present value of the benefit stream and of the cost stream. The benefits of using EP on WG, FCR, SR, and production cost will be emphasized in this study. Fish averaging 20$\pm$3.6g (Mean$\pm$SD) were randomly distributed in each small cage (6m$\times$6m) as groups of 2,000 fish. By using 3 large size cages (12m$\times$12m), 12 small cages were constructed, and only 9 small cages were employed for three replicates of each diet treatment. To compare with MP diet, two sinking EP diets were designed by our laboratory and produced by the local feed company who wanted to promote these EP diets for the mass cage culture of Korean rockfish in the future. Two EP diets contain white fish meal and/or BAIFA-M as the main animal protein sources : WFM diet, maximum 43% of white fish meal : BAIEA- M diet, 30% of white fish meal nab replaced by BAIFA- M from WFM diet. Results are summarized in Table 1. Fish fed MP diet showed significantly lower SR than does fish fed two EP diets(P<0.05). However, there Were no significant difference on FCR among fish fed three practical diets. Table 1. Average feed conversion ratio (FCR), accumulative average survival rate (SR) and economic evaluation data far three practical diets. As we expected, BAIFA-M diet is more economical than WFM diet as well as MP diet. Feed cost and production cost per kg production from BAIEA - M diet were lower than those from WFM and MP diets. Moreover, gross profit per Kg production, RPGR and IRR from BAIFA- M diet were higher than those from WFM and MP diets. This economic evaluation study clearly indicated that MP diet should be replaced by the commerical formulated EP diets as soon as possible in the near future because MP diet is not economical in the practical sea cage culture system.

• 유통과학연구
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• 제12권12호
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• pp.43-54
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• 2014

Purpose - This study examines how perceived benefits and costs of traditional market support affect relationship quality and support for a marketeer. In addition, it investigates whether support for traditional market aid programs leads to support for the government. The author developed a structural model comprising several variables, in which perceived benefits and costs comprising economic, social, and environmental costs were proposed, to affect the relationship quality (satisfaction and trust) of traditional market aid programs and the government. Consequently, marketeers satisfied and trusted by traditional market aid programs and the government would support the traditional market aid program, resulting in higher support for the government. The model proposed that customer satisfaction would improve customer loyalty and business performance. Thus, the relationship quality (satisfaction and trust) of the traditional market aid program and government was proposed as a core mediating variable between perceived benefits and costs and support. Research design, data, and methodology - To analyze the proposed model, this study investigates the scenario with a traditional marketeer. Data were collected from 331 respondents, and analyzed with SPSS/PC 18.0 and AMOS 18.0. To test the unidimensionality and nomological validity of the measures of each construct, we employed a scale refinement procedure. The result of the reliability test with Cronbach's and confirmatory factor analysis warranted unidimensionality of the measures for each construct. In addition, nomological validity of the measures was warranted from the result of correlation analysis. Results - First, perceived benefit affects the relationship quality of traditional market aid programs and government. Second, perceived costs affect the satisfaction of traditional market aid programs and government. Third, the relationship quality of a traditional market aid program affects the support of a traditional market aid program, and the relationship quality of government affects the support of government. Finally, the support of traditional market aid program affects support of government. The results confirm the findings of previous studies that local development positively influences support, based on the social exchange theory. Conclusions - The theoretical and managerial contributions of this study are as follows. First, it is the first such study, and defines mediating variables, analyzing relationship quality (satisfaction and trust) between perceived benefits and costs and support for the traditional market industry. Further, it investigates the structural relationships between them with the AMOS program. Second, while most previous studies investigating the relationship between similar variables and those of the present study analyzed how perceived benefits and costs influenced support, this study identified the transfer relationship between the support for traditional market programs and support for the government. This study confirms that support for traditional market aid program increases support for the government. Therefore, government policy makers for traditional market aid programs should explain to marketeers the benefits and costs of traditional market development in terms of economic, social, and environmental factors. At the end, limitations, further research directions, and implications are suggested.

• 자원ㆍ환경경제연구
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• 제17권3호
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• pp.167-199
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• 2008

세계 각지에서 전력망 연계를 통한 전력부문의 협력과 전력시장의 통합이 추진되어 가시적인 성과를 거두고 있다. 동북아 지역은 상당한 경제적 편익이 기대됨에도 불구하고 역내 국가들의 다양한 이해관계와 현실적 제약요인 등으로 인해 전력협력의 성과가 제대로 나타나지 않고 있다. 미국 에너지부 산하의 아르곤연구소(Argonne National Laboratory)에서 개발한 발전 및 송전을 모의하는 프로그램인 GTMax를 통하여 러시아로부터 값 싼 전력이 국내에 수입되는 경우를 분석하였다. 러시아로부터의 수전량이 2,000MW(2017년의 국내 설비용량은 약 90,000MW 이상으로 2,000MW는 2%에 해당)일 경우 절대량이 미미하여 국내 전력시장에 미치는 영향이 거의 없다. 전력망 연계에 의해 큰 폭의 비용 절감을 도모하기 위해서는 수전량이 전체의 10% 수준이 될 정도로 커질 필요가 있음을 보여주고 있다. 또한 경인지역으로 직접 연계되는 것이 비용절감을 크게 하며, 영동지역과 연계되는 경우 영동-경인 간 선로용량의 증설이 불가능하다면 수전전력은 중부지역의 발전량을 대체하게 되어 수전의 상대적 이득이 감소하는 것으로 나타났다.

• 기술혁신학회지
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• 제16권1호
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• pp.176-198
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• 2013

예비타당성조사는 대규모 신규 공공투자사업에 대한 신중한 접근을 진작하고자 1999년에 도입되었다. 사업 타당성에 대한 결론 도출 시 비용편익분석으로 대변되는 경제적 타당성 분석을 중요시하므로, R&D사업의 분석과 결론 도출에 있어서 다양한 쟁점이 제기되어 왔다. 본 연구에서는 연구개발부문 예비타당성조사에서 표준화하여 적용할 수 있는 사항을 살펴보았으며, 대표질문과 평가항목 간의 상관관계를 통하여 쟁점 도출을 표준화하는 방안을 제시하였다. 그리고 R&D효과 분류와 논리분석의 적용을 통해 분석전략을 표준화하여 R&D투자 의사결정의 합리화에 기여하고자 한다.

• 한국정보시스템학회지:정보시스템연구
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• 제17권4호
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• pp.207-232
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• 2008

As electronic commerce is growing to be a part of everyday business life for companies, enterprises are required to establish the appropriate strategy to effectively realize their business visions. The correct choice of strategy enables organizations to make efficient use of internal resources and adjust to the external environment, affecting their performance. The nature of the firms' strategy has been currently focused on the new business model such as e-commerce. In the beginning of e-commerce, the decreasing cost of business transactions was a major benefit affecting its success. However, e-commerce firms are currently facing new advanced information technology, various business models and serious competition. To deal with these new challenges, there is an increasing demand for right strategy direction to effectively and efficiently manage a corporation's internal resources and external environments that are related to electronic commerce. Moreover, it is necessary both to set up the feasible strategy direction and to evaluate its outcome. The purpose of this study attempts to provide appropriate e-commerce strategy, which is well matched with e-commerce performance, as the different strategies affect different results of e-commerce. On the basis of the results of this research, we can see that the strategies selected by e-commerce companies differ according to the e-commerce type and firm's size.

• 한국IT서비스학회지
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• 제11권1호
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• pp.173-196
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• 2012

Cloud computing is provided on demand service via the internet, allowing users to pay for the service they actually use. Since cloud computing is emerging stage in industry, many companies and government consider adopting the cloud computing. Actually a variety of factors may influence on the adopting decision making of cloud computing. The objective of this study is to explore the significant factors affecting the adoption decision of enterprise cloud computing. A research model has been suggested based on TOE framework and outsourcing decision framework. Based on 302 data collected from managers in various industries, the major findings are following. First, the benefit factors of cloud computing service such as agility and cost reduction have direct and positive effects on adoption of the service. Second, lock-in as a risk factor of cloud computing service has a negative effect while security has not. Third, both internal and external environment factors have positive effects on adoption of the service.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제16권10호
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• pp.3299-3312
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• 2022

Recently, South Korea preferentially allocated frequencies to build 5G networks as a core competitiveness of the 4th Industrial Revolution. Although the government recognize the importance of 5G construction and preoccupation, network operators have limited to some services, testing the possibility of practical use of 5G. They hesitated to actively build and to carry out the service of a complete 5G network. While 5G is being developed and standardized like this, no one is sure of this step exactly what 5G will be. Thus, following research questions are asked by various stakeholders of 5G market: What is an ideal service providing method for the practical use of 5th generation mobile network? And what are the critical elements to be considered when selecting the service providing method? Therefore, the study aims to investigate 5G service providing issues and elements to be considered and to provide most appropriate service providing method for the practical use of 5G. The results identify that 'Specialized Service' is most appropriate method at the aspects of benefit and opportunity as well as the aspect of risk. In addition, the outcomes imply that the experts replying to the survey not only expect the expansion of emerging market, but also concern the social risk and cost. Since the study dealt with economic, social and business issues in providing 5G service, it might contribute not only to practical research, but also to academic research regarding 5G service method.

• Advances in concrete construction
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• 제15권4호
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• pp.215-228
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• 2023

The vibrational behavior of nanoelements is critical in determining how a nanostructure behaves. However, combining vibrational analysis with stability analysis allows for a more comprehensive knowledge of a structure's behavior. As a result, the goal of this research is to characterize the behavior of nonlocal nanocyndrical beams with uniform and nonuniform cross sections. The nonuniformity of the beams is determined by three distinct section functions, namely linear, convex, and exponential functions, with the length and mass of the beams being identical. For completely clamped, fully pinned, and cantilever boundary conditions, Eringen's nonlocal theory is combined with the Timoshenko beam model. The extended differential quadrature technique was used to solve the governing equations in this research. In contrast to the other boundary conditions, the findings of this research reveal that the nonlocal impact has the opposite effect on the frequency of the uniform cantilever nanobeam. Furthermore, since the mass of the materials employed in these nanobeams is designed to remain the same, the findings may be utilized to help improve the frequency and buckling stress of a resonator without requiring additional material, which is a cost-effective benefit.