• 공학교육연구
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• 제15권5호
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• pp.64-68
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• 2012

Design factors such as design objects establishment, analysis, synthesis, production, test and evaluation should be educated in a systematic way. Also design ability to reflect practical restrictive conditions such as industrial standards, economic feasibility, environmental impact, aesthetics, safety and reliability, ethical impacts and social impacts should be cultivated. In this paper, we explain the meaning of these terms and propose a systematic engineering design education framework satisfying Korean engineering education accreditation criteria. We also present a simple implementation in information network engineering.

• 복식
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• 제59권1호
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• pp.146-158
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• 2009

The purpose of this study was to identify hair salon's implementation strategies and current service condition for mass customization. The questionnaire was composed of 82 questions. 115 hair salon's directors were subjects of this study. The results were as follows: Hair salon's mass customization strategies were categorized into 6 factors such as staff's technique, communication service, electronic products, monetary support, man-to-man service, and dissatisfaction removal service. Hair salons were categorized into 2 groups of a high implementation group and a low implementation group. A high implementation group had a higher monthly sales and more regular customers and staff. The hair salons were franchises and were more spacious in the high group. They were located at fashion street, department store, or outlet mall, and offered fashionable hair styles. However, a low implementation group had a lower monthly sales and less regular customers and staffs. The size of hair salon was small in the low group. They were located in residential areas and offered basic hair styles.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1990년도 한국자동제어학술회의논문집(국내학술편); KOEX, Seoul; 26-27 Oct. 1990
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• pp.317-321
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• 1990

This paper proposes a performance improvement to a control system with optimal state feedback control. In this paper, a simple and direct design procedure is proposed to design the model following controller. The scheme is implemented in a 16 bit micromputer with math corprocessor. Tests on a DC machine have been conducted.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2002년도 가을학술발표대회 디자인학 연구
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• pp.140-141
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• 2002

• 인터넷정보학회논문지
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• 제14권4호
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• pp.35-42
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• 2013

요즘 웹을 이용하여 많은 일들이 처리되고 있다. 이에 따라 다양하고 복잡한 기능을 가진 웹 기반의 응용 시스템들이 요구되고 있다. 이러한 웹 기반의 응용 시스템들을 효율적으로 개발하기 위하여 객체지향 분석 설계 방법론을 사용하고 있으며, 그 구현을 위하여 Java EE(Java Platform, Enterprise Edition) 기반의 기술들이 사용되기도 한다. 이렇게 개발된 웹 기반의 응용 시스템을 통해 많은 일들을 처리하면서 점차 보안과 관련된 이슈들이 중요해졌다. 이를 위하여 Java EE는 보안과 관련된 메커니즘을 제공하고 있지만, 효율적인 웹 응용 시스템을 개발하기 위한 객체지향 분석 설계 방법론과의 상호 연관성은 제공하지 못하고 있다. 이에 따라 Java EE 메커니즘에 따른 보안 방안은 개발 마지막 단계에서 비로소 구현되기 때문에, 요구사항 분석부터 구현에 이르기까지 시스템 개발 전 주기에 따른 일관된 보안 적용은 어려운 실정이다. 따라서 본 논문에서는 요구사항 분석부터 구현에 이르기까지, 보안이 강조된 '안전한 웹 응용 시스템을 위한 객체지향 분석 설계 방법론'을 제안한다. 제안한 객체지향 분석 설계 방법론은 보안에 관한 요구사항 분석과 시스템 분석 및 설계를 위하여 보안이 강조된 모델링 언어인 UMLsec을 사용하고, 그 구현을 위해서 Java EE 기반 기술 중 서블릿의 역할기반 접근제어(RBAC: Role Based Access Control)를 이용한다. 아울러 본 '웹 응용 보안을 위한 객체지향 분석 설계 방법론'을 온라인 뱅킹 시스템 개발에 적용하여 그 효율성을 확인하였다.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2008년도 하계학술대회 논문집
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• pp.413-415
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• 2008

The charge equalizer design for a series connected battery string is very challenging because it needs to satisfy many requirements such as implementation possibility, equalization speed, equalization efficiency, controller complexity, size and cost issues, voltage and current stress, and so on. Numerous algorithms and circuits were developed to meet the above demands and some interesting results have been obtained through them. However, for a large number of cells, for example, eighty or more batteries, the previous approaches might cause problems. Such problems include long equalization time, high controller complexity, bulky size, high implementation cost, and high voltage and current stress. To overcome these circumstances, this paper proposes a charge equalizer design method based on a battery modularization technique. In this method, the number of cells that we consider in an equalizer design procedure can be effectively reduces; thus, designing a charge equalizer becomes much easier. Furthermore, by applying the previously verified charge equalizers to the intramodule and the outer-module, we can obtain easy design of a charge equalizer and good charge balancing performance. Several examples and experimental results are presented to demonstrate the usefulness of the charge equalizer design method.

• 동력기계공학회지
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• 제16권1호
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• pp.12-18
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• 2012

The fluid performance is one of the key design factors considered during the development of torque converters especially at conceptual design stages. Therefore the design environment that allows an easy access to legacy data of fluid performance could be critical to reduce the design life cycle as well as to increase the performance of the torque converter. In this paper we present a computer-based system that enables designers to utilize massive legacy data for their design of torque converters. For the implementation of the system we propose a standard format for the legacy data and build them into the database to be efficiently shared by designers in the company. Also we provide numerous analysis tools in the system that allow, for example, database management, data viewing and document generation for search, analysis and reporting. In the paper the implementation of the system is introduced in detail with its effective user interface.

• 디지털산업정보학회논문지
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• 제13권2호
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• pp.77-85
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• 2017

Due to the expansion of accommodation space caused by increase of population along with lifestyle changes, most of people spend their time indoor except for the travel time. Because of this, environmental change of indoor is very important, and it affects people's health and economy in resources. But, most of people don't acknowledge the importance of indoor environment. Thus, monitoring system for sustaining and managing indoor environment systematically is needed, and big data clusters should be used in order to save and manage numerous sensor data collected from many spaces. In this paper, we design a big data cluster for the indoor environment monitoring in order to store the sensor data and monitor unit of the huge building Implementation design big data cluster-based system for the analysis, and a distributed file system and building a Hadoop, HBase for big data processing. Also, various sensor data is saved for collection, and effective indoor environment management and health enhancement through monitoring is expected.

• 대한전자공학회논문지SD
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• 제43권2호
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• pp.96-104
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• 2006

본 논문에서는 VLSI구현을 위한 CAN 프로토콜 컨트롤러의 최적화된 구조를 제안하였으며, 제안된 구조를 이용하여 VLSI로 구현하였다. 또한 많은 시간이 소요되는 검증의 문제점을 보완하기 위하여 3단계 검증기법을 제안하였으며 이를 통하여 빠른 속도의 검증이 가능하게 되었다. 제안된 구조는 기존의 CAN 프로토콜 컨트롤러보다 적은 사이즈의 게이트 수를 갖고 있을 뿐만 아니라 호스트 프로세서와의 연결이 용이하게 구성되어 있기 때문에 비용 및 효율성에서 장점을 갖고 있고, 제안된 3단계 검증기법은 반복되는 검증의 수를 줄임으로써 최적화된 검증을 수행하도록 구성되어 있기 때문에 빠른 속도의 검증이 가능하다. 설계된 CAN 프로토콜 컨트롤러는 0.35마이크론 CMOS공정을 이용하여 제작되었다.

• 한국CDE학회논문집
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• 제18권3호
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• pp.200-210
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• 2013

It has become important to manage plant data effectively and to share these data among different organizations that are located in different places and participate in a variety of lifecycle phases. ISO 15926 is an international standard for integration of lifecycle data for process plants including oil and gas facilities. This standard consists of several parts providing a generic data model, reference data, and implementation methods. iRINGTools is a tool developed for the exchange of plant design data. This tool supports the implementation methods specified in ISO 15926. In this paper, the exchange of plant design data using iRINGTools is investigated. For this, sample P&ID data was modeled and data exchange experiment was performed. From the experiment, a data exchange procedure based on ISO 15926 is established and design data types that can be practically exchanged using ISO 15926 were identified.