• 대한산업공학회지
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• 제12권1호
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• pp.81-94
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• 1986

A shortest path dynamic programming formulation is proposed and attemped to solve an uncapacitated expansion sequencing problem. It is also compared with the Extended Binary State Space approach with total capacity. Difficulties and merits associated with the formulation are discussed. The shortest path dynamic programming lacks the separability condition and an optimal solution is not guaranteed. However it has other merits and seems to be the practical solution procedure for the expansion sequencing problem in a sense that it finds near optimal solution with less state evaluations.

• 한국품질경영학회:학술대회논문집
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• 한국품질경영학회 2009년도 추계학술대회
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• pp.230-233
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• 2009

Remanufacturing is an industrial manufacturing process. The merits of manufacturing are to reuse old products to perform like a new product and to save energy, natural resources, landfill space and to reduce air pollution by less re-smelting. This paper proposes a systemic approach for activating the domestic remanufacturing industry. The approach is based on inside and outside regulations to apply remanufacturing companies. And, we analyzed the state and problems of remanufacturing industry for automobile parts.

• 한국기계가공학회지
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• 제19권5호
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• pp.45-52
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• 2020

Recently, design for additive manufacturing (DfAM) technology has become a prominent design methodology for exploiting 3D printing, which leads the Fourth Industrial Revolution. When manufactured by the 3D printing method, it is possible to produce several shapes compared to the conventional casting or cutting process. DfAM-as a newly-proposed design methodology-can be used to specially design products with various shapes to apply functional requirements. Topology optimization verifies load paths to determine the draft design, and a shape-optimized design with objective functions for weight reduction enables efficient lightweight product design. In this study, by using these two DfAM technologies, a lightweight and optimal design is constructed for a node part of a vehicle body with a space frame designed for a lightweight vehicle. DfAM methodologies for concept design and detailed design, and the associated results, are presented. Finally, the product was additively manufactured, a fatigue performance test was performed, and the design reliability was verified.

• 한국지리정보학회지
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• 제10권4호
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• pp.111-121
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• 2007

도시산업구조의 진단과 예측은 지속가능한 도시발전계획수립을 위한 주요한 과제이다. 지금까지의 산업관련 도시공간구조 연구들은 주로 도시산업체 자료나 총 종사자수 자료를 활용하여 산업유형별 공간분포의 측정에 집중되어져 왔다. 그러나 최근 비정규직 문제를 포함한 근로자의 종사상 지위가 중요한 이슈가 되는 시점에서 본 연구는 읍면동 단위의 1994년 및 2004년 종사상 지위별 자료를 수집하고 동 변화자료를 기반으로 공간분석 단위를 일치시킨 후 GIS를 활용하여 종사상 지위분류체계 자료를 활용한 도시산업구조의 질적 변화를 공간적 관점에서 해석하였다. GIS환경에서 부산시 산업구조의 종사상지위 유형별 분석 결과는 다음과 같다. 첫째, 전통적인 노동집약적 산업이 한계에 부딪히고, 서비스업 및 도소매업은 영세한 생계형으로 진행되어 부산의 고용흡수력이 떨어질 수밖에 없었으며 통계상으로는 종사자의 수가 증가하였으나 비정규직과 비임금 노동자가 급증하면서 부산지역 일자리의 질이 하락하고 있는 것으로 측정되었다. 둘째, 전통적인 도심지는 쇠퇴하는 반면 신도시나 신흥공업단지가 형성된 지역, 제조업보다 서비스업이 발달한 지역이 일자리가 증가하는 경향을 보였다. 본 연구의 결과는 도시발전의 근간이 되는 산업구조의 행태적 패턴 뿐 아니라 종사상지위라는 질적 평가를 통한 장기적 차원의 산업발전계획안 마련을 위한 기초자료로서의 활용을 기대한다.

• 항공우주산업기술동향
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• 제6권2호
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• pp.60-68
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• 2008

원자산소, 입자복사, 진공 및 열주기 등과 같은 우주환경요소의 복합적인 영향으로 인하여 우주용 자재의 특성 및 물성치에 급격한 성능저하가 일어나게 된다. 따라서 우주환경이 자재에 미치는 특성변화 매커니즘을 이해하고 차세대 우주프로그램에 적용될 수 있는 신소재 개발을 위하여 NASA, ESA 및JAXA와 같은 선진 우주기관에서는 국제우주정거장 또는 LDEF 실험위성 등에 적용된 자재시편을 활용하여 많은 연구를 지속적으로 수행하고 있다. 본 논문에서는NASA 및 JAXA의 우주용 자재연구동향과 ESA의 우주자재 선정기준에 대하여 소개하고자한다.

• KIEAE Journal
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• 제12권6호
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• pp.55-62
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• 2012

Recently, public concerns about renewal of abandoned sites centered in Industrial Heritage are increasing in Korea. For this reason, the purpose of this study was to analyze characteristics of renewal methods of public space using abandoned sites. To achieve the proposed goal, the first part of this study focused on showing public properties involved in the fundamental reasons for the birth and life(persistence) of abandoned sites, which testified that they should be regenerated into public spaces to maximize the potentiality of abandoned sites. Upon preliminary analysis, main values of public space renewal were drawn through the analysis of the selection criteria, type of information about selected works, and classification system in 'The European Prize for Urban Public Space' hosted by the CCCB(Centre of Contemporary Culture of Barcelona). Then, 427 projects participating in this prize from 2000 to 2010 were analyzed to identify characteristics of each level (site-program, process and space). Although this study was limited to the analysis of European projects, it proved that citizens' lives and activities should be involved in projecting-practicing-designing of renewal project using abandoned sites to create a successful public space.

• 산업경영시스템학회지
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• 제31권3호
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• pp.43-51
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• 2008

Recent advances in mobile computing technologies and platform-independent information systems have enabled to realize a ubiquitous environment. Community computing has been developed as a useful tool for realizing collaborative services in a ubiquitous environment. In this paper, we present a formal model of a ubiquitous space that takes community concept into consideration and propose two management frameworks that prevent conflicts among communities. To demonstrate the validity of the proposed frameworks, an example for coordinating two communities is provided.

• 한국가구학회지
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• 제27권1호
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• pp.59-68
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• 2016

The Industrial/Technological Cultural Properties are being protected, the rest facing with demolition and damages. In order to better cope with such situation, Korea has officially introduced the Registered Cultural Properties System since 2001 and began acknowledging the historical values of industrial buildings as modern cultural properties. In the Nordrhein-Westfalen, Germany, there are approximately 3,500 industrial buildings under the cultural asset protection and management not only in the Ruhr-region but also state-wide. Among these, this case study focuses on the Hansa Coking Plant, a large-scale Revitalization project to rehabilitate the old industrial complexes and facility buildings that have been shut down on December 15, 1992. Purpose of this study is to analyze main project plans of each facility in the Hansa Coking Plant and to bring out the main features of the plans, so that they can be utilized to find suggestions for Industrial/Technological Cultural Properties Revitalization in Korea.

• 한국산학기술학회:학술대회논문집
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• 한국산학기술학회 2006년도 춘계학술발표논문집
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• pp.284-287
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• 2006

본 논문에서는 dSPACE사의 PowerPC603e과 TMS320F240를 사용하는 dSPACE시스템에 의한 유도전동기 구동 시스템의 벡터제어에 대하여 소개한다. MATLAB/Simulink 소프트웨어와 DS1104 R&D 제어보드, Leroy SOMER사의 0.3KW 유도전동기와 IPM 인버터를 본 연구에 사용하였다. dSPACE 시스템은 Simulink 블록들을 사용함으로써 짧은 시간동안에 다양한 형태의 제어기를 설계 및 구현할 수 있는 장점이 있기 때문에 유도전동기의 벡터제어를 쉽게 설계하고 구현할 수 있다.

• 한국실내디자인학회논문집
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• 제39호
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• pp.28-36
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• 2003

The yardstick of value has transformed into personal and sensitive one after it went through an Industrial society. The space in the society of sensitivity is defined by a semiotic character rather than as a physical object aimed at satisfying basic desire. Through this character, space makes a meaning and comes to exist an exchanging productive place. Environmental transformation is demanding further ample sensitive expression. In connection with the above, this thesis aims to identify the characteristics of sensitive and human-centered approach and systematize the analogy analysis which is applied to the interior space, classified by elements by introducing the concept of analogic inference in the field of rhetoric and through a diverse genres. As an approach, this thesis is entitled the analogic inference of the field of rhetoric to various art genres, and as a analogic interpretation genre, this thesis Is subdivided it into the fields of literature, image, fashion, flower art, and visual design, and study the analysis of analogic inference as a means of materializing storied space through the connection literature with design.