• Communications for Statistical Applications and Methods
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• 제10권3호
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• pp.741-747
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• 2003

There are many method to evaluate the economic value and non-economic value for information service. But we have a difficult problem to estimate the economic value of information objectively because we don't have a comparable value correspondent to the value of information service. Here, we proposed a method to evaluate for the value of information with the survey and discussed the model of the measure of non-economic value with weighted wages.

• 동양고전연구
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• 제50호
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• pp.211-232
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• 2013

가의는 서한 초기의 만연한 빈부격차의 심화와 음란하고 사치스러운 풍속이 유행하는 사회적 풍조와 농업생산 인구가 감소하는 한편 생산 활동에 종사할 수 없는 인구가 증가하고 있는 상황에 직면하여 심각한 문제의식을 갖게 된다. 가의가 갖게 되는 문제의식은 바로 서한 사회의 사회경제적 질서의 붕괴와 도덕적 타락에 대한 염려와 국가재정 고갈의 위험성에 대한 것들이었다. 가의는 서한 초기 사회가 직면한 사회적 경제적 폐해현상에 대한 반성에서부터 착수하여 자신의 경제정책에 대한 청사진을 제시한다. 즉 가의의 경제사상은 한나라 초기의 무위자연의 방임주의적인 경제정책의 폐해를 개선시키기 위해서 제기된 것으로 중농억상 정책을 구체적인 개혁의 청사진으로 제시하는 한편 화폐제도에 대해서도 구체적인 개혁의 시나리오를 제시한다. 이러한 두 가지의 개혁방안은 가의의 경제사상에 있어서 이론적 근간이 되는 것이라고 말할 수 있는 것이다. 이러한 가의의 경제정책 청사진에 대하여 본문에서는 중농억상 정책과 민간에서의 화폐주조 금지 정책을 중심으로 조명해보았다.

• The Journal of Asian Finance, Economics and Business
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• 제9권1호
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• pp.229-240
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• 2022

This article examines the link between regional disparity and social mobility in India. There has been a steady rise in economic inequality in India. The rapid economic growth coupled with a rise in income inequality is a serious concern in India. While the emphasis is on inclusive growth, it appears difficult to tackle the problem without looking at the intricacies of the problem. The Social Mobility Index is an important tool that focuses on bringing long-term equality by identifying priority policy areas in the country. We used a multivariate statistical approach to construct a social mobility index at the regional level by considering several social and economic variables. Our findings show that while the Union Territory of Delhi ranks first in the social mobility index, Chhattisgarh has the least social mobility. From a policy perspective, a comprehensive examination of the determinants of the social mobility index shows that health, education access, and quality, and equity of education are of great importance in improving social mobility. Considering India's potential economic growth resulting from its 'demographic dividend' and improved access, markets, and technology, increasing social mobility through facilitating equal opportunities in society is key to achieving inclusive growth.

• 대한전기학회논문지
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• 제41권1호
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• pp.1-8
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• 1992

Hopfield neural network has been applied to the problem of economic load dispatch(ELD) of electric power. The optimum values of neuron potentials are represented in terms of large numbers. The differential synchronous transition mode is used in this simulation. Through case studies, we have shown the possibility of the application of neural network to ELD. In case of including the transmission losses, the proposed method has an advantage that the problem can be solved simply with one neural network, without calculating incremental fuel costs and incremental losses required by traditional method.

• 벤처창업연구
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• 제16권4호
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• pp.59-70
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• 2021

청년실업의 문제는 이미 국내외에서 매우 심각한 사회적인 문제이며, 청년실업의 문제를 해결할 수 있는 방안의 한가지인 창업은 여러 방면의 관심 속에 연구되어오고 있다. 창업은 경제위기를 극복할 뿐만 아니라 4차 산업혁명 시대의 혁신 인재를 육성하는 역할을 한다. 이러한 이유로 대학생들의 창업활성화를 위한 연구는 매우 중요하다고 할 수 있다. 본 연구는 대학생들의 경제적 창업동기와 비경제적 창업동기에 미치는 영향을 확인하기 위하여 개인 기업가지향성과 목표지향성이 경제적 창업동기와 비경제적 창업동기에 어떠한 영향을 주는지 살펴보고자 한다. 또한 개인 기업가지향성과 창업동기(경제적, 비경제적)의 관계에서 목표지향성이 매개효과가 있는지 살펴보고자 한다. 연구결과 첫째, 대학생의 개인 기업가지향성은 목표지향성에 정(+)의 영향을 미치는 것이 확인되었다. 둘째, 대학생의 목표지향성은 경제적 창업동기에 정(+)의 영향을 미치며, 비경제적 창업동기에 정(+)의 영향을 미치는 것 확인되었다. 셋째, 대학생의 개인 기업가지향성은 경제적 창업동기에 정(+)의 영향을 미치며, 비경제적 창업동기에 정(+)의 영향을 미미치는 것을 확인하였다. 넷째, 대학생의 목표지향성은 개인 기업가지향성과 경제적 창업동기 관계에서 매개 효과가 있으며, 또한 개인 기업가지향성과 비경제적 창업동기 관계에서 매개 효과가 있음을 확인하였다.

• Journal of Advanced Marine Engineering and Technology
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• 제33권3호
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• pp.395-402
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• 2009

This paper presents the newly developed Pareto-based multi-objective Bees Algorithm with weighted sum technique for solving a power system multi-objective nonlinear optimization problem. Specifically, the Pareto-based Bees Algorithm with memorized zone has been developed to alleviate both difficulties from classical techniques and intelligent techniques for multi-objective problems (MOP) and successfully applied to an Environmental/Economic (electric power) dispatch (EED) problem. This multi-objective Bees Algorithm has been examined and applied to the standard IEEE 30-bus six-generator test system. Simulation results have been compared to those obtained using other approaches. The comparison shows the potential and effectiveness of the proposed Bees Algorithm for solving the multi-objective EED problem.

• 전기의세계
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• 제22권6호
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• pp.24-32
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• 1973

When applying capacitors to distribution line, an effort must be made to determine the economic benefits resulting from the installation of a capacitor. There have been many papers and articles published on the economics of capacitors. Most of these are special cases, or have so many qualifications that they are not much use for other cases unless very careful attention is given to minute details. A general economic analysis on a distribution line is very complicated problem. Consequently, a diagram solution is illustrated for determining the economic condenser and applying resonably well for the distribution line with any load division.

• Journal of Electrical Engineering and Technology
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• 제13권5호
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• pp.1778-1790
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• 2018

Based on the requirements and characteristics of multi-zone autonomous decision-making in modern power system, fully distributed computing methods are needed to optimize the economic dispatch (ED) problem coordination of multi-regional power system on the basis of constructing decomposition and interaction mechanism. In this paper, four fully distributed methods based on alternating direction method of multipliers (ADMM) are used for solving the ED problem in distributed manner. By duplicating variables, the 2-block classical ADMM can be directly used to solve ED problem fully distributed. The second method is employing ADMM to solve the dual problem of ED in fully distributed manner. N-block methods based on ADMM including Alternating Direction Method with Gaussian back substitution (ADM_G) and Exchange ADMM (E_ADMM) are employed also. These two methods all can solve ED problem in distributed manner. However, the former one cannot be carried out in parallel. In this paper, four fully distributed methods solve the ED problem in distributed collaborative manner. And we also discussed the difference of four algorithms from the aspects of algorithm convergence, calculation speed and parameter change. Some simulation results are reported to test the performance of these distributed algorithms in serial and parallel.

• 대한간호학회지
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• 제53권1호
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• pp.101-114
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• 2023

Purpose: This study aimed to identify regional differences in problem drinking among adult males in single-person households and predict the determinants. Methods: This study used data from the 2019 Community Health Survey. Geographically weighted regression analysis was performed on 8,625 adult males in single-person households who had been consuming alcohol for the past year. The Si-Gun-Gu was selected as the spatial unit. Results: The top 10 regions for problem drinking among adult males in single-person households were located in the Jeju-do and Jeollanam-do areas near the southern coast, whereas the bottom 10 regions were located in the Incheon and northern Gyeonggi-do areas. Smoking, economic activity, and educational level were common factors affecting problem drinking among this population. Among the determinants of regional disparities in problem drinking among adult males in single-person households, personal factors included age, smoking, depression level, economic activity, educational level, and leisure activity, while regional factors included population and karaoke venue ratio. Conclusion: Problem drinking among adult males in single-person households varies by region, and the variables affecting each particular area differ. Therefore, it is necessary to develop interventions tailored to individuals and regions that reflect the characteristics of each region by prioritizing smoking, economic activity, and educational level as the common factors.

• Journal of Electrical Engineering and Technology
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• 제9권2호
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• pp.423-432
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• 2014

Non-dominated Sorting Genetic Algorithm-II (NSGA-II) is applied for solving Combined Economic Emission Dispatch (CEED) problem with valve-point loading of thermal generators. This CEED problem with valve-point loading is a nonlinear, constrained multi-objective optimization problem, with power balance and generator capacity constraints. The valve-point loading introduce ripples in the input-output characteristics of generating units and make the CEED problem as a nonsmooth optimization problem. To validate its effectiveness of NSGA-II, two benchmark test systems, IEEE 30-bus and IEEE 118-bus systems are considered. To compare the Pareto-front obtained using NSGA-II, reference Pareto-front is generated using multiple runs of Real Coded Genetic Algorithm (RCGA) with weighted sum of objectives. Comparison with other optimization techniques showed the superiority of the NSGA-II approach and confirmed its potential for solving the CEED problem. Numerical results show that NSGA-II algorithm can provide Pareto-front in a single run with good diversity and convergence. An approach based on Technique for Ordering Preferences by Similarity to Ideal Solution (TOPSIS) is applied on non-dominated solutions obtained to determine Best Compromise Solution (BCS).