• 정보화연구
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• 제11권1호
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• pp.75-80
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• 2014

한국프로야구의 관심과 사랑이 늘어나고 있는 시점에서 효과적인 영입 방법의 필요성이 대두대고 있다. 기존의 영입 방법은 전문가의 평가에 따라 각 팀의 선수를 영입 하는 방식이었다. 하지만 기존 방법은 선수의 객관적인 평가보단 학연, 지연의 주관적인 평가도 많이 반영되기 때문에 효율적인 영입 방법이라 할 수 없다. 이에 따라 본 논문에서는 DEA(Data Envelopment Analysis) 효율성 분석을 통해 각 팀의 선수들의 프로야구 전체 효율성과 팀별 효율성을 분석하여 각 선수의 효율성을 분석하고 분석된 효율성을 기반으로 선수의 영입 방법에 대해서 논의한다. 마지막으로 실험을 통해 영입 된 선수의 실제 처분에 대해서 확인하여 실험의 타당성을 입증한다.

• 대한전기학회논문지:전력기술부문A
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• 제54권2호
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• pp.79-87
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• 2005

At present Cournot model is one of the most commonly used theories to analyze the gaming situation in oligopoly market. But there exist several problems to apply this model to electricity market. The representative one is to obtain the inverse demand curve able to be induced from the relationship between market price and demand response. In Cournot model, each player offers their generation quantity to accomplish maximum profit, which is accomplished by reducing their quantity compared with available total capacity. As stated above, to obtain the probable Cournot equilibrium to reflect real market situation, we have to induce the correct demand function first of all. Usually the correlation between price and demand appears on the long-term basis through the statistical data analysis (for example, regression analysis) or by investigating consumer utility functions of several consumer groups classified as residential, industrial, and commercial. However, the elasticity has a tendency to change continuously according to the total market demand size or the level of market price. Therefore it should be updated as trading period passes by. In this paper we propose a method for inducing and updating this price elasticity of demand function for more realistic market equilibrium.

• KIEE International Transactions on Power Engineering
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• 제5A권4호
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• pp.403-411
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• 2005

At present, the Cournot model is one of the most commonly used theories to analyze the gaming situation in an oligopoly type market. However, several problems exist in the successful application of this model to the electricity market. The representative one is obtaining the inverse demand curve able to be induced from the relationship between market price and demand response. In the Cournot model, each player offers their generation quantity to obtain maximum profit, which is accomplished by reducing their quantity compared with available total capacity. As stated above, to obtain the probable Cournot equilibrium to reflect the real market situation, we have to induce the correct demand function first of all. Usually the correlation between price and demand appears over the long-term through statistical data analysis (for example, regression analysis) or by investigating consumer utility functions of several consumer groups classified as residential, industrial, and commercial. However, the elasticity has a tendency to change continuously according to the total market demand size or the level of market price. Therefore it should be updated as the trading period passes by. In this paper we propose a method for inducing and updating this price elasticity of demand function for more realistic market equilibrium.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 추계학술대회 논문집 전력기술부문
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• pp.168-170
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• 2005

At present Cournot model is one of the most commonly used theories to analyze the gaming situation in oligopoly market. But there exist several problems to apply this model to electricity market. The representative one is to obtain the inverse demand curve able to be induced from the relationship between market price and demand response. In Cournot model, each player offers their generation quantity to accomplish maximum profit, which is accomplished by reducing their quantity compared with available total capacity. As stated above, to obtain the probable Cournot equilibrium to reflect real market situation, we have to induce the correct demand function first of all. Usually the correlation between price and demand appears on the long-term basis through the statistical data analysis (for example, regression analysis) or by investigating consumer utility functions of several consumer groups classified as residential, industrial, and commercial. However, the elasticity has a tendency to change continuously according to the total market demand size or the level of market price. Therefore it should be updated as trading period passes by. In this paper we propose a method for inducing and updating this price elasticity of demand function for more realistic market equilibrium

• 패션비즈니스
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• 제15권3호
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• pp.67-83
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• 2011

Korean film "Swiri"(1999) as well as a popular film is the first Korean blockbuster Film. In addition, the number of viewers is very common in Korea a large ripple effect that Korea film "Swiri" in his works were selected to act as a hero and contextual significance confrontation between the two figures through the symbolic analysis of clothing styles and colors Analyzing the meaning of space and a scene in the background with the colorful costumes and would like to study. In detail, the film's central character theme and image suggesting that dramatic reversal the character's personality through the clothes I was expressed through clothing styles and colors were analyzed with symbolism. Korean film "Swiri" the film's DVD player application from the situation or story that is considered to be important psychological conflicts selected twenty-seven screens in the study were collected still images. Data collected for the effect of color contrast and color analysis technical. The center of the video footage, the film's main characters costumes and background colors of the space was to examine the significance and symbolism.

• 수산해양교육연구
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• 제26권3호
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• pp.535-542
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• 2014

The purpose of this study was to analyze the movements of the lower extremity joints during a taekwondo kick motion called 'Juchumseogi hu Apkkoaseogi yeopchagi', which was administered to players to improve their balance, stability, and range of motion for the prevention of injuries. Eight professional players and amateur players were recruited as the subjects. Kinematic data were collected by four real-time infrared cameras. The hip joint, knee joint, and ankle joint angles were measured using instruments. During the 'Juchumseogi hu Apkkoaseogi yeopchagi' kick motion, there were small and inconsistent effects on each joint. This study processed the data using the Windows SPSS Ver. 18.0 to get an independent t-test, with the setting, p< .05. Results indicated that hip joint, knee joint, and ankle joint angles were almost significantly different between professional and amateur player during 'Juchumseogi hu apgeule Apkkoaseogi' kick motion.

• 전기전자학회논문지
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• 제14권4호
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• pp.305-311
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• 2010

Most recent web search engines perform effective keyword-based multimedia contents retrieval by investigating keywords associated with multimedia contents on the Web and comparing them with query keywords. On the other hand, most music and compilation albums provide professional artwork as cover art that will be displayed when the music is played. If the cover art is not available, then the music player just displays some dummy or random images, but this has been a source of dissatisfaction. In this paper, in order to automatically create cover art that is matched with music contents, we propose a music album cover art creation scheme based on music contents analysis and result synthesis. We first (i) analyze music contents and their lyrics and extract representative keywords, (ii) expand the keywords using WordNet and generate various queries, (iii) retrieve related images from the Web using those queries, and finally (iv) synthesize them according to the user preference for album cover art. To show the effectiveness of our scheme, we developed a prototype system and reported some results.

• Journal of Communications and Networks
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• 제18권3호
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• pp.411-419
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• 2016

This article investigates the problem of distributed channel selection in opportunistic spectrum access networks from a perspective of interference minimization. The traditional physical (PHY)-layer interference model is for information theoretic analysis. When practical multiple access mechanisms are considered, the recently developed binary medium access control (MAC)-layer interference model in the previous work is more useful, in which the experienced interference of a user is defined as the number of competing users. However, the binary model is not accurate in mathematics analysis with poor achievable performance. Therefore, we propose a real-valued one called stochastic MAC-layer interference model, where the utility of a player is defined as a function of the aggregate weight of the stochastic interference of competing neighbors. Then, the distributed channel selection problem in the stochastic MAC-layer interference model is formulated as a weighted stochastic MAC-layer interference minimization game and we proved that the game is an exact potential game which exists one pure strategy Nash equilibrium point at least. By using the proposed stochastic learning-automata based uncoupled algorithm with heterogeneous learning parameter (SLA-H), we can achieve suboptimal convergence averagely and this result can be verified in the simulation. Moreover, the simulated results also prove that the proposed stochastic model can achieve higher throughput performance and faster convergence behavior than the binary one.

• 한국운동역학회지
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• 제13권1호
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• pp.185-204
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• 2003

The purpose of this study was to obtain the data for stable and accurate techniques of the free throw in basketball. The subjects of this study were seven male basketball player consisted of college students athletes. Free throw motions were taken by video camera. The three-dimensional coordinates was processed by DLT. The variables were the velocity, the angular velocity of the upper extremity segments, degree, and angular momentum. The result of analysis is summarized as follows. 1. The velocity and angular velocity of the upper extremity segment was showed an gradual increase and a smooth velocity transfer, transferring from proximal segment to distal segment at free throw motion in basketball. 2. The local term and remote term angular velocity momentum of the proximal segment showed larger than that of the distal segment in X, Y, Z axis component all. 3. The remote term angular momentum was showed larger than that of the local term angular momentum in X, Y, Z axis component all. 4. The angular motion of the upper trunk and upper arm, upper arm and forearm was showed in opposite direction and symmetrical angular momentum in local term angular momentum of the Y and Z axis component. 5. All the segments of upper extremity segment was showed left rotation in remote term angular momentum of the Y axis component and right rotation in remote term angular momentum of the Z axis component.

• 한국인터넷방송통신학회논문지
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• 제18권6호
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• pp.277-283
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• 2018

일부의 혁신적인 사람들은 스스로 생각하는 컴퓨터에 대한 환상을 꿈꾸며, 그 능력을 부여하는 방법을 꾸준히 연구하여왔다. 그런데 알파고의 등장 이후 그 환상이 마냥 허황된 생각만은 아님을 간접적으로 느낄 수 있었고, 이제는 컴퓨터를 전공하는 대부분의 학생들은 그 방법을 공부할 만큼 일반화 되어가고 있다. 딥 러닝에 대한 사람들의 관심이 커지면서 그로 인해 머신러닝에 대한 발전 가능성 또한 많은 사람들이 기대하고 있다. 이번 연구에서는 포커게임을 매개로 하여 머신러닝 기술을 적용하여 시스템의 게임능력을 개선해 보려 하였고, 또한 얼굴 표정에 따른 감정의 변화 분석을 활용하여 게임의 완성도 또한 높여 보았다.