• 한국게임학회 논문지
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• 제7권4호
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• pp.93-104
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• 2007

게임과 같은 실시간이며 복잡한 다중 에이전트 환경에서는 시스템의 효율성을 극대화하기 위해 반복적으로 작업 할당이 수행된다. 본 논문에서는 실시간 다중 에이전트 구조에 적합하며 최적화된 작업 할당이 가능한 방안으로 $A^*$ 알고리즘을 적용한 조정 에이전트를 제안한다. 제안하는 조정 에이전트는 수행 가능한 에이전트와 할당 가능한 작업으로 정제된 모든 에이전트와 작업의 조합으로 상태 그래프를 생성하고, $A^*$ 알고리즘을 이용한 평가함수를 적용하여 최적화된 작업 할당을 수행한다. 또한 실시간 재 할당에 따른 지연을 방지하기 위해 그리디 방식을 선택적으로 사용함으로써 재할당 요구에 대한 빠른 처리가 가능하다. 마지막으로 모의실험을 통해 조정 에이전트를 통한 최적화된 작업 할당 결과가 그리디 방식의 작업 할당보다 성능이 25%향상되었음을 입증한다.

• 산업진흥연구
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• 제8권2호
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• pp.165-176
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• 2023

본 논문은 2007년부터 2021 년까지 강소성 13개 현급 도시의 패널 데이터를 사용하여 엔트로피 방법, SBM 모델 및 결합조정정도 모델을 채택하여 강소성의 신도시화의 질적향상과 녹색경제효율성의 연계발전관계를 실증분석하였다. 연구결과 연계발전관계는 2008년과 2009년에는 낮은 수준으로 나타났으나, 2010년 이후에는 꾸준히 개선되었으며, 2018년부터 2021년까지는 큰 폭으로 증가하였다. 이후 2021년에 높은 발전을 보여 강소성의 도시화와 녹색경제효율성 간의 연계발전수준이 꾸준히 개선되고 있는 것으로 나타났다. 강소지역의 발전은 전반적으로 건전하고, 상당한 속도로 조정되고 있지만, 지역 간에는 여전히 차이가 있었다.

• The International Journal of Costume Culture
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• 제9권2호
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• pp.94-103
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• 2006

The purposes of this study were to found out the effects of appearance variables in fashion coordination cues of a male stimulus person and perceiver's traits on the liking of the stimulus person with person perception theory as the research background. The study consisted of a survey and a quasi-experiment. The experimental materials used for this study were 18 stimuli and instruments to measure fashion interest, liking toward the stimulus, and gender body ideology. The sampling method was a convenient sampling. The subjects consisted of 940 male and female undergraduate students aged from 18 to 51, in three areas including Daejoen, Cheongyang and Nonsan provinces. The data collection was conducted between May 1 and June 30, 2004. The validity of the measuring instruments were confirmed by pre-tests and judge group discussions, and reliability was evaluated by Cronbach' alpha analysis. The results showed that Clothing formality, make-up, hair style of stimulus person, and traits of subjects meaningfully affected on the liking toward the stimulus person. The result of the study will serve as a basic information on total fashion coordination for young male adults.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2006년도 하계종합학술대회
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• pp.925-926
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• 2006

In the multi-agent system for a single task, the action selection can be made for the real-time environment by using the global coordination space, global coordination graph and MAX-PLUS algorithm. However, there are some difficulties in multi-agent system for multi-tasking. In this paper, a real-time decision making method is suggested by using coordination space, coordination graph and dynamic coordinated state of multi-agent system including many agents and multiple tasks. Specifically, we propose locally dynamic coordinated state to effectively use MAX-PLUS algorithm for multiple tasks completion. Our technique is shown to be valid in the box pushing simulation of a multi-agent system.

• 대한전기학회논문지:전력기술부문A
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• 제53권5호
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• pp.249-256
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• 2004

This paper suggests a novel evaluation scheme of protective effectiveness in distribution systems. The adequacy of every parameter in a protective device is evaluated for the setting or correction rules. Then, the protective effectiveness of a device, device-wise effectiveness, is obtained by the combination of the parametric evaluation results. The coordination-wise effectiveness between devices can be calculated by evaluating the parameters which contribute the performance of coordination. The protective effectiveness of the whole system can be obtained by combining the device-wise and coordination-wise effectiveness values. The rules, in this paper, are categorized into three groups; rules for single parameter, rules for coordination between parameters, and rules for coordination between protective devices to form a hierarchical calculation model. The proposed method is applied to a typical distribution network to show its effectiveness.

• 한국멀티미디어학회논문지
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• 제12권5호
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• pp.688-698
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• 2009

인터넷을 이용하는 패션/코디 쇼핑몰은 그 시장이 매년 큰 폭으로 증가하고 있다. 하지만 대부분의 쇼핑몰들은 아직도 카테고리에 의한 상품 분류를 제외하면 특정한 의류를 찾을 수 있는 기능이 포함되어 있지 않아 사용자들이 불편을 겪고 있다. 본 연구에서는 여성복의 패션 코디네이션 시스템 구축 시 내용 기반의 방식 중 휴리스틱 기반 방식으로 시스템을 구축하기 위해 여성복의 특성을 가장 잘 나타낼 수 있는 속성들을 상속관계로 정의하고, 상품 관리자가 속성 값을 입력할 수 있도록 하였으며 가장 유사한 의류를 추천하기위한 방법을 소개하고 분석하였다.

• 전기학회논문지
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• 제60권1호
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• pp.43-49
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• 2011

A distance relay scheme is commonly used for backup protection. This scheme, called a step distance protection, is comprised of 3 steps for graded zones having different operating time. As for the conventional step distance protection scheme, Zone 2 can exceed the ordinary coverage excessively in case of a transformer protection relay especially. In this case, there can be overlapped protection area from a backup protection relay and, therefore, malfunctions can occur when any fault occurs in the overlapped protection area. Distance relays and overcurrent relays are used for backup protection generally, and both relays have normally this problem, the maloperation, caused by a fault in the overlapped protection area. Corresponding to an IEEE standard, this problem can be solved with the modification of the operating time. On the other hand, in Korea, zones are modified to cope with this problem in some specific conditions. These two methods may not be obvious to handle this problem correctly because these methods, modifying the common rules, can cause another coordination problem. To overcome this problem clearly, this paper describes an improved backup protection coordination scheme using an IEC 61850-based distance relay for transformer backup protection. IEC 61850-based IED(Intelligent Electronic Device) and the network system based on the kernel 2.6 LINUX are realized to verify the proposed method. And laboratory tests to estimate the communication time show that the proposed coordination method is reliable enough for the improved backup protection scheme.

• The Journal of Asian Finance, Economics and Business
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• 제8권2호
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• pp.563-570
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• 2021

The importance of cooperative financial management is expected to be able to encourage the needs of the community especially towards the supervision of cooperatives and human resources. The study was conducted aiming to determine the effect of human resources, financial attitudes, and coordination on cooperative financial management. Research with quantitative methods. The study was conducted with multiple regression methods, while the sampling technique was based on a random sample of samples with the data collection method using a survey method in the form of a questionnaire that was measured with a Likert scale. The method of determining the research sample is done by calculating the Slovin formula, determining the research sample of 166 cooperatives in Buleleng Regency, Bali Province. The results of the research prove that partial human resources have a significant positive effect on cooperative financial management, financial attitude variables have a significant positive effect on cooperative financial management and coordination variables have a significant positive effect on cooperative financial management. The results of this study can be stated that the better the financial management of cooperatives, better will be the impact on cooperative growth so that the need for more competent resources in cooperative management.

• KEPCO Journal on Electric Power and Energy
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• 제8권1호
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• pp.15-19
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• 2022

The radial distribution systems (RDS) commonly used around the world has the following disadvantages. First, when the DL is operated on a radial system, the line utilization rate is usually kept low. Second, if a fault occurs in the radial DL, a power outage of 3 to 5 minutes is occurring depending on the operator's proficiency and fault situation until the fault section is separated and the normal section is replaced. To solve this problem, Various methods have been proposed at domestic and foreign to solve this problem, and in Korea, research is underway on the advanced system of operating multiple linked DL always. A system that is electrically linked always, and that is built to enable high-speed communication during the protection coordination is named networked distribution system (NDS). Because the load shares the DL, the line utilization rate can be improved, and even if the line faults, the normal section does not need to be cut off, so the normal section does not experience a power outage. However, since it is impossible to predict in which direction the fault current will flow when a failure occurs in the NDS, a communication-based protection coordination is used, but there is no backup protection coordination method in case of communication failure. Therefore, in this paper, we propose a protective cooperation method to apply as a backup method when communication fails in NDS. The new method is to change TCC by location of CB using voltage drop in case of fault.

• 전기학회논문지
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• 제60권2호
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• pp.279-284
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• 2011

Harmonic distortions in current waveform may cause significant problems in electric power system facility and operation. This paper presents an adaptive parameter estimation method to detect harmonic current components caused by nonlinear loads. In addition, a coordination strategy for multiple inverter-interfaced distributed generators to compensate the harmonic currents is discussed. The coordination strategy is realized by distributing the harmonic compensation participation index to individual distributed generators. The harmonic compensation participation index can be determined by the amount of remaining power generation capacity of each distributed generator. Simulation results based on switching-level inverter models show that the proposed harmonic detection method has good performance and the coordination strategy can improve harmonic problems efficiently.