• 수산해양기술연구
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• 제49권4호
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• pp.459-468
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• 2013

In the application of the ecosystem-based fisheries assessment Jeonnam marine ranching ecosystem, two fisheries, funnel fishery and trap fishery, were selected as target fisheries. Black seabream, Acanthopagru schlegelii, rock bream, Sebastes inermis, gray mullet, Mugil cephalus, were selected as target species for the funnel fishery, and conger eel, Conger myriaster, was target species for the trap fishery. For assessing indicators of four management objectives, that is the maintenance of sustainability, biodiversity, habitat quality and socio-economic benefits, indicators were selected considering the availability of data, which were 5 indicators for sustainability, 3 indicators for biodiversity, 4 indicators for habitat, 2 indicators for socio-economic benefit. The Objective risk indices for sustainability and biodiversity of two fisheries were estimated at yellow zone, medium risk level. The objective risk indices for habitat and socio-economic benefit were estimated at green zone, safe level. The species risk indices (SRI) were estimated at yellow zone. The fishery risk indices (FRIs) were estimated at 1.143 and 1.400 for funnel net fishery and trap fishery, respectively. Finally the ecosystem risk index estimated at 1.184.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 하계학술대회 논문집 A
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• pp.98-100
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• 2003

This paper presents the method for computing the power economic dispatch with an optimal power flow (OPF) computation algorithm, considering the power factor limits constraint. Efficient reactive power planning enhances economic operation as well as system security. Accordingly, an adequate level of power factor limits for the load buses should be evaluated for economic operation. The power factor limits are included and described into the OPF's objective function. The proposed method is applied to IEEE 26 buses system.

• 농업과학연구
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• 제49권4호
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• pp.737-747
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• 2022

The purpose of this study is to analyze farmers' perceptions of Greenhouse Gas Reduction Projects and identify factors influencing participation in the projects. To achieve the research objective, a survey was conducted and a probit model was adopted for the empirical analysis. The results showed that farmers do not participate in the projects due to a lack of education and promotion and due to economic loss. It also showed that the frequency of training and technical guidance learning, degree of recognition of the need for efforts to reduce greenhouse gases, and the level of recognition of the projects concerned have a positive impact on the willingness to participate in the projects. Meanwhile, participation in agricultural environment conservation programs has a negative impact on it. Enhancement of education and promotion as well as economic support (direct payment, R&D) would be useful to raise the willingness to participate in the projects.

• International Journal of Computer Science & Network Security
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• 제22권3호
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• pp.53-60
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• 2022

The article examines the problems of ensuring the effectiveness of the economic security system in the face of increasing competition. The relevance of the study is determined by the intensification of competition between enterprises and the threats arising from this phenomenon. The methodological basis is the methods used: analysis and synthesis - to identify the main trends in the development of tools for economic security of the enterprise; systematization - to highlight the main characteristics of the economic security of the enterprise in the intensification of competition; generalization - to form the general conclusions of the study. The purpose of scientific research is to substantiate the feasibility of using the tools of the economic security system to increase its efficiency in the face of intensifying competition. The main components of the economic security system of the enterprise, which have the greatest impact on the formation of an effective level of economic security. The defining characteristics of the system of economic security of the enterprise are investigated. Special characteristics of the economic security system of the enterprise are considered. The offered directions of tools of maintenance of system of economic safety of the enterprise in competitive conditions: objective, subjective external, subjective internal. For each area, specific tools for ensuring the system of economic security, which affect its efficiency, have been identified.

• International Journal of Computer Science & Network Security
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• 제21권9호
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• pp.239-246
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• 2021

This article substantiates the scientific provisions for modelling the level of Ukraine's public financial security taking into account the impact of budget policy, in the process of which identified indicators of budget policy that significantly affect the public financial security and the factors of budget policy based on regression analysis do not interact closely with each other. A seven-factor regression equation is constructed, which is statistically significant, reliable, economically logical, and devoid of autocorrelation. The objective function of maximizing the level of public financial security is constructed and strategic guidelines of budget policy in the context of Ukraine's public financial security are developed, in particular: optimization of the structure of budget revenues through the expansion of the resource base; reduction of the budget deficit while ensuring faster growth rates of state and local budget revenues compared to their expenditures; optimization of debt serviced from the budget through raising funds from the sale of domestic government bonds, mainly on a long-term basis; minimization of budgetary risks and existing threats to the public financial security by ensuring long-term stability of budgets etc.

• 한국게임학회 논문지
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• 제11권4호
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• pp.117-126
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• 2011

본 연구는 인천 게임산업단지 조성을 통한 경제적 파급효과를 분석하는데 있다. 게임산업은 문화콘텐츠 산업으로서 큰 잠재가능성을 가지고 있어, 발전에 대한 당위성이 높다는 다양한 의견을 가지고 있음에도 불구하고, 이에 대한 경제적 파급효과를 분석한 사례는 거의 없는 실정이었다. 따라서 본 연구는 이를 선험적으로 분석하는 측면에서 연구에 대한 의의를 가질 수 있다. 이의 분석을 위해 인천경제자유구역내에 게임산업단지를 설립하는 경우를 가정하고 건설부문, 게임관련 제조업 및 게임관련 서비스업을 토대로 지역산업연관분석을 실시하였다. 본 연구의 결과를 통해 게임산업이 지역 및 국가에 미치는 중요성을 직접적으로 파악할 수 있으며, 향후 이와 관련한 연구의 방향에 큰 영향을 미칠 수 있을 것이다.

• 기술혁신학회지
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• 제14권1호
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• pp.40-59
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• 2011

우리나라 정부는 천문학 분야의 연구수준 향상을 위하여 대형광학망원경 개발사업을 추진 중이다. 그러나 대형광학망원경사업에는 막대한 예산이 소요되므로, 대형광망원경사업의 경제적 효과를 정량적으로 분석한 후 사업의 경제적 타당성 여부를 평가해야 한다. 이에 본 연구는 CVM을 활용하여 엄밀한 경제이론에 근거하여 대형광학망원경사업의 편익을 정량적으로 규명하고자 하였다. 분석 결과 대형광학망원경사업을 위한 연간 가구당 평균 지불의사액의 하한값이 1,416원으로 나타났다. 이를 전국의 전체 가구로 환산한 대형광학망원경사업의 경제적 편익은 연간 240.8억원에 이르는 것으로 나타났다. 이러한 분석결과는 대형광학망원경사업과 같은 대규모 과학기술 관련 투자사업의 타당성 평가를 위한 경제적 기초자료로 활용될 수 있다.

• 한국농촌생활과학회지
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• 제6권2호
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• pp.151-161
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• 1995

The objective of this study is to analyse consumption problems of the rural poor households. This is a succeeding work to the previous report on economic resource problems. Data from 154 rural poor house holds and 290 rural non-poor households were analysed to comprehend their consumption practices, financial management ability, consumer competence of homemakers, and market environments. The major findings and conclusions are as follows : 1. The rural poor households had deficit of 30, 000 won per month. They perceived relative importance of the educational expenses and food expenses and heavier pressure of educational expenses and light and water expenses than other items. 2. The rural poor households evaluated their financial management ability average like non-poor households but their level of consumer competence was lower than other households. This means their consumer efficiency is relatively low. 3. The rural poor households had similar grade of market environments to non-poor households. This is significantly different from urban households.

• Wind and Structures
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• 제31권4호
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• pp.311-319
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• 2020

India is a developing nation and heavily spends on the development of wind power plants to meet the national energy demand. The objective of this paper is to investigate wind power potential of Ennore site using wind data collected over a period of two years by three parameter Weibull distribution. The Weibull parameters are estimated using maximum likelihood, least square method and moment method and the accuracy is determined using R² and root mean square error values. The site specific capacity factor is calculated by the mathematical model developed by three parameter Weibull distribution at different hub heights above the ground level. At last, the wind energy economic analysis is carried out using capacity factor at 30 m, 40 m and 50 m height for different wind turbine models. The analysis showed that the site has potential to install utility wind turbines to generate energy at the lowest cost per kilowatt-hour at height of 50 m. This research provides information of wind characteristics of potential sites and helps in selecting suitable wind turbine.

• East Asian Economic Review
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• 제19권2호
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• pp.167-188
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• 2015

The objective of this study is to obtain a better understanding of the current rice production condition in Myanmar through efficiency analysis, especially, to examine the impact of farm mechanization on Myanmar rice production efficiency. For representation of efficiency and the determinants, this paper uses both the data envelopment analysis (DEA) and the stochastic frontier approach (SFA) with variable returns to scale on Myanmar rice production. The efficiency of the rice production was estimated and subsequently the determinants factors were investigated based on the estimated efficiency level of these sample farmers. The empirical evidence finds that farm mechanical tools significantly improve the Myanmar rice production efficiency.