• Management Science and Financial Engineering
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• 제14권1호
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• pp.65-86
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• 2008

In this paper, we have considered the multicriteria quadratic plant location problem. In addition to the allocation costs, the maintenance costs of the plants are also considered. The objective functions considered in this paper are quadratic in nature. The given problem is reduced to the problem with linear objective function. The method of Fernandez and Puerto (2003) is applied to solve the reduced problem. It is illustrated with help of examples. The effect of the change in the allocation and maintenance costs on allocation of plants to the clients has also been discussed.

• 품질경영학회지
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• 제13권1호
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• pp.41-50
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• 1985

The purpose of this study is to consider the criteria for decision-making of industrial location in view of substituting production factors through maximizing profit instead of minimizing transportation cost. This paper makes use of mutual relationship between spatial economy in Euclidean distance and substituting production factors in production theory. Therefore, this paper will develop weak points in classical theory of industrial location by introducing production theory which has conception of substituting production factors.

• 디지털융복합연구
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• 제10권5호
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• pp.251-266
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• 2012

위치정보란 특정한 물건이나 개인이 특정한 시점에 존재하거나 존재하였던 장소에 관한 정보이다. 스마트폰이 대중화되면서 위치정보는 단순히 장소에 관한 정보를 넘어서 개인의 위치정보를 이용한 서비스가 대세를 이루고 있다. 그러나, 개인정보의 유출로 야기되는 문제는 금전적 경제적 손실을 넘어서 개인의 이동경로 혹은 개인의 위치를 직접적으로 확인할 수 있는 정보이기 때문에 개인의 신상에 영향을 미칠 수도 있다. 개인위치정보의 관리를 위한 위치기반 서비스들을 통제할 수 있는 가이드 등이 부족한 현실이다. 따라서 본 논문에서는 개인의 위치정보 침해 및 유 노출을 사전에 통제하기 위해 정보시스템 분석 설계 운영 단계에서 개인위치정보에 감리를 수행할 때, 사법처리기준, 재무손실등급, 개인위치정보 중요도, 점검항목의 중요도가 포함된 점검항목을 제안하였으며, 전문가들의 설문 조사를 통하여 제안한 점검항목에 대한 적합성을 검증하였다.

• 한국GIS학회:학술대회논문집
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• 한국GIS학회 2003년도 추계학술대회논문집
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• pp.65-69
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• 2003

The Location Based Services comprised GIS and Telecommunication allow users to receive various services based on their geographic location. It is need to legislation to encourage the provision and use of location information by providing privacy protection to users. But the contents of the legislation proposed by Korean government have problems conflicted between protection of a person's location information and invigoration of location-based services. The purpose of this study is to search complementary measures for privacy protection of location information from From a viewpoint of effective management strategy for geographic information.

• 한국건설관리학회논문집
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• 제5권2호
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• pp.64-71
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• 2004

작업일보는 일일 단위로 관리되는 작업수행, 출역, 자재 및 장비 정보 등의 축적을 통해 다양한 관점에서 활용될 수 있는 실적정보를 포함하고 있다. 이러한 중요성에도 불구하고 현장인력 슬림화와 건설정보의 증대로 작업일보 작성에 대한 업무부담이 늘어나고 있는 반면, 이렇게 어렵게 수집된 정보가 축적되지 않고 정보의 활용이 하루 단위의 체크에 국한된 형태를 보이고 있다. 이 연구는 작업일보 상에 나타나는 수행 작업 정보가 공종과 작업위치의 조합으로 표현되고 있는데, 작업위치의 설정이 개인의 선호도나 경험 등에 의해 다르게 표현되기 때문에 정보의 축적이 어렵고 활용도가 떨어진다는 점에 유의하고 있다. 이 연구의 목적은 시설물, 공간, 부위 등의 작업위치 정보를 구성하는 요소정보를 파악하고, 그 요소정보간 유연성 있는 관계 설정을 통하여 작업위치를 유연성 있게 표현함과 동시에, 축적과 재활용이 용이한 작업정보 생성 체계를 구축하는 것이다. 또한 이러한 체계를 이용하여 해당 프로젝트에서 하루 단위로 관리되는 작업정보를 미리 생성하고, 생성된 작업을 관리함으로써 작업일보 업무의 효율성을 높이고자 하는 것이다.

• 대한산업공학회지
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• 제34권2호
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• pp.160-171
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• 2008

MU's mobility patterns can be found from a movement history data. The prediction accuracy and model complexity depend on the degree of application of history data. The more data we use, the more accurate the prediction is. As a result, the location management cost is reduced, but complexity of the model increases. In this paper, we classify MU's mobility patterns into four types. For each type, we find the respective optimal number of application of history data, and predictive location area by using the simulation. The optimal numbers of four types are shown to be different. When we use more than three application of history data, the simulation time and data storage are shown to increase very steeply.

• 대한안전경영과학회지
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• 제20권2호
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• pp.37-44
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• 2018

The Location Based Service is growing rapidly nowadays due to the universalization of the use for smartphone, and therefore the location determination technology has been placed in a very important position. This study suggests an algorithm that can provide the estimate of users' location by using smartphone sensors. And in doing so we will propose a methodology for the creation and update of indoor map through the more accurate position estimation using smartphone sensors such as acceleration sensor, gyroscope sensor, geomagnetic sensor and rotation sensor.

• 산업공학
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• 제19권2호
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• pp.160-167
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• 2006

It is a crucial managerial issue how to manage assembly blocks at shipyard. Based on the project experience in Hyundai Heavy Industries, this study points out the difficulties on the block stockyard operations, formalizes the JIBUN (location) assignment problem for assembly blocks, and develops the JIBUN (location) assignment algorithm whose purpose is to reduce the number of unproductive block moves. Through simulation experiments for various situations, this study demonstrates the usefulness of JIBUN (location) assignment algorithm. In addition, this study examines the impacts of block move sequence rules and of block stockyard layouts on the block stockyard operations.

• 한국경영과학회지
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• 제20권3호
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• pp.61-75
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• 1995

In a microcellular personal communication service (PCS) it is required to minimize the paging and location updating signals. We propose a multi-layered location registration scheme to reduce the paging and updating signals. In this scheme the subscribers are grouped by their characteristics (velocity and call arrival rate) and are served by appropriately sized location registration area. In order to group the subscriber, we define subscriber grouping problem (SGP). Proposition are examined to solve the grouping problem. The performance of the proposed subscriber grouping algorithm is tested with examples. Simulation results indicate that the subscriber grouping procedure is effective for designing the multi-layered location registration scheme.

• 대한안전경영과학회지
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• 제12권2호
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• pp.99-105
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• 2010

In this paper, the uAPSS(u-APartment Service System) that is based on location-aware technology is designed and implemented for a luxury apartment. On the real luxury apartment the developed system has been employed and tested to provide convenient and secure living for residents. It provides services such as emergency call, intelligent elevator operation, and hands-free door access based on the location of the residents with personal device as called smart tag. It can also be applied to other service areas such as the location-aware u-Service for hospitals, high-rising complex buildings, silver towns, etc.