• 산업경영시스템학회지
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• 제18권34호
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• pp.107-114
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• 1995

The objective of this study is to design a one-stage dynamic prediction model with Kalman state space model. For a model verification, it is compared with EWMA(Exponentially Weighed Moving Average) model. The model designed in this research can be extended to process prevention control and quality monitoring.

• 산업경영시스템학회지
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• 제22권52호
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• pp.241-246
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• 1999

In this study, to specify an evaluation of human sensibility, the types of color, intensity of illuminations and lights consisting work environmental condition are decided, and image data from examining the change of human sensibility followed by changes of the above three conditions are obtained. Using the factor analysis and quantification theory in multi-variate analysis type of Sensibility Ergonomics, determinating the structure of factors, specifying the relations of environmental conditions and factors can be done so that the structure of image on human sensibility space with the change of environmental conditions is analyzed.

• 대한산업공학회지
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• 제25권2호
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• pp.226-232
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• 1999

Graph Coloring Problem(GCP) is a problem of assigning different colors to nodes which are connected by an edge. An extended form of GCP is TCP (T-coloring problem) and, in TCP, edge weights are added to GCP and it is possible to extend GCP's applications. To solve TCP, in this paper, we propose an improved Simulated Annealing(SA) method with search space smoothing. It has been observed that the improved SA method obtains better results than SA does.

• 대한산업공학회지
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• 제24권1호
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• pp.137-144
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• 1998

Block stacking, which involves the storage of unit loads in stacks within storage rows, is typically used in traditional warehouses to achieve a high space utilization at a low investment cost. In this paper, assuming that the demand size from a customer is an i.i.d. random variable, we develop a probabilistic block stacking storage model and its algorithm for a singles product, which minimizes the time-overage floor space requirement under an (s, S) inventory policy and the violation of the FIFO lot rotation rule only in a single partially-occupied row.

• 한국항공우주학회지
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• 제33권6호
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• pp.57-63
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• 2005

높은 정확도와 빠른 측정기술의 필요성 증가는 산업사진측량에 대한 관심을 갖게 되었다. 본 연구에서 산업사진측량기술을 O-2A항공기의 정밀 측정에 적용하였다. 항공기의 정확한 설계데이터 없이 항공기의 check point를 이용하여 얼라인먼트를 측정하였고, 동체의 변형상태 조사는 Pro-Spot 시스템으로 수행하였다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2002년도 ICCAS
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• pp.119.5-119
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• 2002

$\textbullet$ Lack of exact dynamic modeling of omni-directional mobile robots $\textbullet$ The exact dynamic model of the mobile robots including the wheel dynamics $\textbullet$ The joint-space and operational-space dynamic model of the mobile are dervied as anaytical forms $\textbullet$ Comparison between the discrepancy of the incomplete dynamic and the exact dynamic $\textbullet$ Useful aspect of redundant actuation

• Industrial Engineering and Management Systems
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• 제9권2호
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• pp.178-194
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• 2010

To improve the ship operation in automated container terminals, it is important to schedule different types of handling equipment to operate synchronously. For example, a vehicle with container receiving and lifting capabilities is used to transport containers from a storage yard to a vessel and vice versa, while a triple quay crane (QC) can handle up to three 40-ft containers simultaneously. This paper discusses the manner in which vehicles should be assigned to containers to support such multi-lifts of QCs by using information about the locations and times of deliveries. A mixed-integer programming model is introduced to optimally assign delivery tasks to vehicles. This model considers the constraint imposed by the limited buffer space under each QC. A procedure for converting buffer-space constraints into time window constraints and a heuristic algorithmfor overcoming the excessive computational time required for solving the mathematical model are suggested. A numerical experiment is conducted to compare the objective values and computational times of the heuristic algorithm with those of the optimizing method to evaluate the performance of the heuristic algorithm.

• 한국산학기술학회논문지
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• 제10권4호
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• pp.846-851
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• 2009

근대사회의 형성은 과거의 공간을 변화시켰을 뿐만 아니라 새로운 내용과 형식의 공간도 등장시켰다. 근대 사회를 통해 등장한 새로운 공간들은 건축과 도시 속으로 흡수되면서 공간에 대한 과거의 전통적인 인식에 변화를 가져왔다. 이러한 맥락에서 볼 때, 근대 형성기의 건축과 공간은 근대건축의 원형으로서 20세기의 근대건축과 공간을 이해하는 중요한 단서가 된다. 본 연구는 이와 같은 문제의식 하에, 근대적 공간과 그 인식의 형성을 풍경식 정원을 통해 살펴보고자 한다. 본 연구에서 풍경식 정원을 주목하는 이유는 풍경식 정원이 18세기말부터 사회의 주도적인 과제가 되었던 몇 개의 주제들 중 하나로서 유럽 전체에 영향을 미쳤기 때문이다. 따라서 풍경식 정원을 분석함으로써 유럽 전체에 나타나는 공통적이고 일반적인 근대적 공간인식을 파악할 수 있다.

• 디지털콘텐츠학회 논문지
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• 제7권2호
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• pp.75-82
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• 2006

농업혁명, 산업혁명, 정보혁명과 맞먹는 제4의 혁명이 바로 유비쿼터스 컴퓨팅 혁명이다. 과거의 농업 혁명이나 산업혁명은 인류문명의 기반인 물리 공간의 혁명이었고, 월드와이드웹 서비스가 확대되면서 절정기를 맞은 정보화 혁명은 사이버 공간의 혁명이었다. 이에 반해 유비쿼터스 컴퓨팅 혁명은 물리 공간과 사이버 공간의 지능적 결합을 통한 온라인과 오프라인 공간이 통합된 공간에서 이뤄진다. 사이버 공간은 자연스럽게 생활공간과 결합되어 새로운 통합 공간을 창출한다. 그 공간은 아직까지 인류가 경험하지 못한 미지의 세계이자 무한한 기회 공간이다. 본 소고는 현실 증감된 유비쿼터스 컴퓨팅 기술(RFID, CCTV)의 개념과 현황 살펴본다. 또한 본 소고의 주요 연구 목적으로는 현실 증감된 환경하에서 프라이버시, 개인정보, 전자감시에 대한 개념적인 분석을 위한 것이다. 따라서 본 소고에서는 사건, 기술적인 이슈, 문제와 해결 등에 관한 분석을 다루었다.

• 산업기술연구
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• 제26권A호
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• pp.29-38
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• 2006

Efficiency and universality which was the spirit of the modern age, had also an enfluence on our living environment. Various types of individual housing unit were developed and mass-produced. However, the exterior space in our city is a place for our social life and intermediate place to connect the private life of each individual to our society. For the people to adapt themselves well to their environment, it should be well organized which means it is clearly divided and integrated in a hierarchical order. To realize these conditions, adequate boundaries to divide each territory and entrances to connect each territory are two essential elements. One of the possible methods to realize these conditions can be found in korean traditional architecture where the exterior space has the same figural quality like buildings and is the center of the whole composition. Buildings, walls and colonnades are the elements to define space. Gates, pavilions, gabs between buildings and posts are the elements to symbolize the entrance connecting each space. Each exterior space is integrated to a whole composition. One is the gradual differentiation along the axis which is unique in korean traditional architecture. The other is the rectangular connection which is also found in the other area in the world. The results of this thesis are as follows. The exterior space in the housing area should have the figural quality. The elements to make boundaries defining exterior space are classified into horizontal elements such as low buildings and walls, and vertical elements such as tower-shape buildings which define space in a different way. The position of openings in a housing block affects the characteristic and openness of a exterior space. Various types of gates are used to decide the relationship between spaces.