• Management Science and Financial Engineering
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• v.18 no.2
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• pp.1-4
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• 2012

We study optimal trading strategy of a market maker with stock inventory. Following Avellaneda and Stoikov (2008), we assume the stock price follows a normal distribution. However, we take a constant expected rate of the stock return and assume that the stock volatility is an inverse function of the stock price level. We show that the optimal bid-ask spread of the market maker is wider for a higher expected rate of stock returns.

• Proceedings of the IEEK Conference
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• 2001.06e
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• pp.207-210
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• 2001

This Paper presents a design of the fuzzy decision maker analyzable of output result of ECG signals. The fuzzy decision maker proposed are divided into two groups whose functions are different each other. The one rules when decision of heart rates, The other decision values for an interval of each points of waveform using of which static state values and abnormal values. We have chosen several variable used for composing condition and action part by knowledge of an Expert The result of outputs with fuzzy rules suggested was a proved of satisfied with by classify ECG arrythmia signals

• Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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• 2004.05a
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• pp.263-267
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• 2004

This paper presents a comparative study on numerical and wave-maker generated waves. The wave-makers employed to carry out the experiments have mathematical forms. The linear and quadratic models were tested. When it comes numerical analysis, the authors used the FLUENT which is widely used commercial code. Only two dimensional cases were considered. The experiments were done in a small wave flume. The waves were generated for various frequencies to examine the characteristics of the water waves. The comparison of the numerical and wave-maker generated waves were made.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.04a
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• pp.1039-1042
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• 2017

본 논문은 루비(Ruby) 언어를 바탕으로 만들어진 게임 제작 도구 RPG Maker VX Ace를 이용하여 제작한 방탈출 게임의 구현 논문이다. RPG Maker VX Ace는 기존의 게임 개발 도구나 게임 엔진과는 다르게 낮은 진입장벽으로 비전문가들도 원활히 게임을 제작할 수 있도록 하는 환경을 제공한다. 본 연구에서는 비전문가들도 쉽게 사용할 수 있는 게임 제작 도구를 이용하여 RPG게임 시장에 접근성을 높이고 게임의 다양성을 확대하여 IT강국인 한국의 게임 시장 경쟁력을 강화할 수 있는 방안에 대해 고찰한다. 또한 RPG Maker VX Ace를 이용한 방탈출 게임의 프로토타입 개발 사례에 대해 분석함으로써 게임의 프로그램 구성을 제시하며 다른 RPG게임들과 차별화된 특징을 제시함으로써 게임이 상용화되었을 때의 기대효과에 대해 다루고 있다.

• Proceedings of the Korean Information Science Society Conference
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• 2004.04a
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• pp.1-3
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• 2004

현재 지역적으로 분산되어 있는 대규모 데이터와 고성능 컴퓨터 자원들을 효과적으로 활용하는 그리드 컴퓨팅 연구가 활성화되었다. 사용자는 다양한 종류의 수많은 그리드 자원을 그리드 미들웨어인 GT3를 이용하여 일관된 방법으로 이용할 수 있으며 사용자의 작업을 원격지에서 실행 및 제어할 수 있다. 본 논문에서는 필요성 및 실현 가능한 그리드 컴퓨팅에 대한 관련연구와 GT3를 실행 및 제어하는 관련된 작업을 RSL-Maker를 사용하여 그리드를 이용하는 여러 응용분야의 사용자 누구나 그리드 컴퓨팅을 사용하게 한다. 현재 그리드는 웹의 기술과 접목한 OGSA가 발표되어 많은 연구가 진행되고 있다. 본 연구는 RSL-Maker를 이용하여 GT3와 호환성 및 융통성을 통해서 보다 향상된 그리드 웹 서버 서비스를 구현했다.

• Journal of Korean Institute of Industrial Engineers
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• v.15 no.2
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• pp.33-44
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• 1989

This paper presents stochastic-statistical dominance rules which eliminate dominated alternatives thereby reduce the number of satisficing alternatives to a manageable size so that the decision maker can choose the best alternative among them when neither the utility function nor the probability distribution of outcomes is exactly known. Specifically, it is assumed that only the characteristics of the utility function and the value function are known. Also, it is assumed that prior probabilities of the mutually exclusive states of nature are not known, but their relative bounds are known. First, the notion of relative risk aversion is used to describe the decision maker's attitude toward risk, which is defined with the acknowledgement that the utility function of the decision maker is a composite function of a cardinal value function and a utility function with-respect to the value function. Then, stochastic-statistical dominance rules are developed to screen out dominated alternatives according to the decision maker's attitude toward risk represented in the form of the measure of relative risk aversion.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.13 no.22
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• pp.51-57
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• 1990

A new interactive multiobjective decision making technique, which is called the fuzzy sequential proxy optimization technique, has been proposed. This technique is the revised version the sequential proxy optimization technique that the decision-maker's marginal rates of substitution is interpreted as type of L-R fuzzy numbers. It used to the square of normalized scalar product as the doptimalilry condition. However, this technique ignores the imprecise nature of a decision-maker's judgement of marginal rates of substitution. Also, it have a shortcoming that can be only applied over three objective functions. In this paper, considering the imprecise nature of a decision-maker's judgement, we presents an interactive fuzzy decision-making method on the basis of the decision-maker's MRS presented through the use of five types of membership functions including non-linear functions. FORTRAN programs that run in conversational mode are developed to implement man-machine interactive procedure.

• International Journal of Knowledge Content Development & Technology
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• v.8 no.2
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• pp.5-22
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• 2018

In the advent of the fourth industrial revolution, which was to become an innovative society, we now face the forefront of a technological revolution, and in response to these changes, the world is actively developing the maker movement to nurture new innovations. Accordingly, it is necessary to change the functions of the library in order to play a leading role in a changing life environment. In addition, it is necessary to present certain directions in policies in order to help expand the library's capabilities to utilize a cultural technology. In this study, we have conducted a survey on public library librarians' perceptions towards makerspaces, and based on this, we have proposed directions and support policies for public library's makerspaces and a dissemination structure of makerspaces for the public library.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.05a
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• pp.1327-1330
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• 2004

본 논문은 멀티 프로세스 컨트롤&모니터링 모델을 지원하는 AI-Maker 시스템에 대해서 기술한다. 멀티 프로세스 컨트롤&모니터링 모델은 제어 구조의 표준으로 떠오르고 있는 OPC와 마이크로소프트사의 분산형 보안 서비스 개념(하부 구조 서비스, 응용 프로그램 지원 서비스)들을 사용하여 실제, 가공, 그리고 가상 데이터 액세스 포인터들에 대해서 차별화 된 제어 구조를 제시한다. AI-Maker는 다양한 사용자들에 대한 차별화 된 서비스와 가공 또는 가상 액세스 포인터를 사용하기 때문에 장비 종속적인 시스템에 대한 개발비용을 감소시킬 수 있다. 또한 전문가 시스템의 학습에 필요한 표본 데이터를 제공하므로 필드버스 기반의 자동화 시스템 개발 및 유지보수 시 양질의 서비스를 제공할 수 있는 이점이 있다.

• Journal of the Korea Society of Computer and Information
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• v.25 no.9
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• pp.213-222
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• 2020

In this paper, we propose a study to develop and apply competency-based elementary school teacher training programs for maker education according to the steps of the DACUM-based Systematic Curriculum and Instructional Development (SCID) procedure model. According to the stages of the DACUM-based SCID (Systematic Curriculum and Instructional Development) procedure model, the educational goals, contents, objects, time, methods, and prerequisite subjects of the maker education training program were derived, and based on this, a competency-based training program was developed. In addition, the effectiveness of the program was verified by applying the developed program. As a result of applying the developed training program and evaluating its effectiveness, it was confirmed that overall positive results were found. We expect this training program to be of help in strengthening the competency of elementary school teachers in maker education.