• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2004년도 추계학술대회 논문집
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• pp.203-206
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• 2004

Recently home network has been developed in the field of Information Technology. And there are many protocols for smart home, such as Lonworks, Echonet, KNX, LnCP etc. However, the performance evaluation has not been nearly known between the protocols. Hence, this paper evaluates the performance of KNX by Konnex Association and LnCP(Living network Control Protocol) by LG Electronics. We developed simulation model using flowchart of KNX and LnCP and simulation scenario through analysis of message to be generated in the home network. Furthermore, we evaluate simulation performance, such as mean transmission delay, maximum transmission delay, and collision rate of both protocols.

• 한국생산제조학회지
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• 제8권1호
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• pp.67-73
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• 1999

This paper presents resizing design optimization method by utilizing genetic algorithm(GA), which consists of three basic operators : reproduction, crossover and mutation. The fitness and penalty function for resizing optimization problem are defined, and the flowchart of the developed computer program along with the descriptions of each modules is presented. Also, modelling for flexible-body dynamic analysis is presented. The model is composed of bodies, joints, and force elements such as translational spring-damper-actuator. The design objects si to determine the wall thickness for minimum weight under dynamic displacement constraint.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2004년도 춘계학술대회 논문집
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• pp.393-397
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• 2004

대규모의 시스템은 운영상 복잡성을 심화시키고, 하위 시스템간의 간섭도를 증가시킨다. 본 논문에서는 이러한 문제의 해결방안으로 떠오르고 있는 자율 분산형 시스템을 컨테이너 터미널이라는 대규모 시스템에 적용하였다. 컨테이너 터미널의 운영체계를 이해하고 이에 적절한 자율 분산형 시스템을 제안하였다. 또한 현재의 컨테이너 터미널 운영체제의 문제점을 도출해내고, 이에 대한 해결책을 자율분산형 시스템에서 찾아내었다. 마지막으로, 제안된 자율 분산형 컨테이너 터미널 시스템 각각의 서브시스템 기능을 정의하고, 이 시스템에서의 운영방안을 장비들의 작업계획에 중점을 두고 흐름도로 나타내었다.

• Journal of the Optical Society of Korea
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• 제19권1호
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• pp.45-54
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• 2015

In this study, a novel parallel wavefront correction system architecture is proposed, and a model-based tabu search (MBTS) algorithm is introduced for this new system to compensate wavefront aberration caused by atmospheric turbulence in a free-space optical (FSO) communication system. The algorithm flowchart is presented, and a simple hypothetical design for the parallel correction system with multiple adaptive optical (AO) subsystems is given. The simulated performance of MBTS for an AO-FSO system is analyzed. The results indicate that the proposed algorithm offers better performance in wavefront aberration compensation, coupling efficiency, and convergence speed than a stochastic parallel gradient descent (SPGD) algorithm.

• 대한치과의사협회지
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• 제56권9호
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• pp.512-520
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• 2018

As the demand for natural and beautiful smiles increases, the demand for anterior aesthetic treatment is increasing. Orthodontic treatment is often necessary for esthetic, healthy and natural treatment outcome. Particularly, in the case of middle-aged patients, minor tooth movement limited to anterior teeth is more effective than comprehensive orthodontic treatment which requires a long-term treatment period. Clinician who is in charge of aesthetic dentistry should have the ability to select a case that can be treated with partial orthodontic treatment and to determine the most effective treatment method. This article provides decision flowchart for case selection and choosing the best treatment modality for anterior teeth alignment.

• 한국기계가공학회지
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• 제14권4호
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• pp.108-117
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• 2015

In this paper, as a previous step of software development, through an analysis step in the basic design process of the FPSO crane, ERD, which could help develop common understanding between its developer and the user, was introduced. From the flowchart of the design process, the overall work flow in its development was understood. Then, after the design process of the crane was divided into many entities, the attributes of each entity were defined and the relationships between the entities were established, followed by ERD creation through the use of IDEF1X notation. The results of the analysis can be readily understood even by users who lack of software knowledge, and then their change requirements can be immediately reflected in the developed system that requires modification.

• 한국학교수학회논문집
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• 제5권1호
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• pp.21-32
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• 2002

The purpose of this research is to invent the method which improve the problem - solution power in mathematics, making learning materials for it and apply it to the inactive 1st grade high school students. The results of this reaserch are as follows. 1. Through this 4 phased team teaching, the atmosphere of learning is positive and learning activities are voluntary and the attitude to the mathematics is improved. 2. The harmony of team studying for a problem solution, problem understanding, flowchart drawing and mind map studying enabled students to have confidence of learning, leading to improve the ability of mathematics.

• 공학교육연구
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• 제15권6호
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• pp.71-79
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• 2012

In this paper, we present, based on a systematic job analysis, the definition, flowchart and description of Ship Building & Ocean Engineering Technician's job in Ship Building & Ocean Engineering Industry for developing an Ship Building & Ocean Engineering education and training program in the context of Korea situation. In addition, it is suggested that the courses be directed toward job site-centered reform through conducting job analysis with experts in the environmental industry. serving new courses demanded by industries in practice and providing training programs for industries.

• 대한가정학회지
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• 제36권2호
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• pp.145-160
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• 1998

This study was designed to investigate purchasing and post-purchase behaviors of middle-aged wives in buying townwears, an well as to examine socio-demographic variables, physical variables, psychological variables, and their influences on. The data included 374 housewives in Seoul and Pusan. Statistics used for data analysis were Frequencies, Means, Standard Deviation, t-test, ANOVA, Pearson's Correlation. The major finding are as follows: 1. The level of post-purchase satisfaction marked higher than middle point. 2. Post-purchase satisfaction differed significantly in income, health-state, identity, stress perceptivity, income satisfaction, sense of comparison, and propensity to consume.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1988년도 전기.전자공학 학술대회 논문집
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• pp.148-150
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• 1988

The output characteristics of VSI by transistor depend upon bias signal with drive circuit. As the CTI is one of the VSI, takes case PWM output voltage. This Inverter operation is based upon position and negative of sinusoldal PWM signal by carrier triangular wave and compared sine one. Besides, the Inverter operation system required digital signal for microprocessor, sampling method of Inverter driver signals study for get rid of generated signal is error. In the paper, the method of 3 level PWM signal for CTI was studied. This method of signals depend upon caculated switching position of natural sampling with $10^{-6}$ modulation error for time flowchart programs.