• 한국해양공학회:학술대회논문집
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• 한국해양공학회 2004년도 학술대회지
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• pp.35-39
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• 2004

In a shipyard, there exist various critical decision making components pertaining to various production hindrances. The most prominent one is best-fit spatial arrangement for the minimal spatial occupancy with better pick-ability for the erection of the ship in the dock. During the present research, a concept have been conceived to evade the gap between the identification oj inter-relationships among a set of blocks to be included on a pre-erection area, and a detailed graphical layout of their positions, is called an Optimal Block Relationship Diagram A research has been performed on generation of optimal (or near Optimal) that is, with minimal scrap area. An effort has been made in the generation of optimal (or near-optimal) Optimal Block Relationship Diagram with the Goldberg's Genetic Algorithms with a representation and a set of operators are 'trained' specifically for this application. The expected result to date predicts very good solutions to test problems involving innumerable different blocks to place. The suggested algorithm could accept input from an erection sequence generator program which assists the user in defining the nature and strength of the relationships among blocks, and could produce input suitable for use in a detailed layout stage.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 추계학술대회 논문집(제1권)
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• pp.345-352
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• 2006

본 연구의 목적은 HSS 장치시스템에 대한 2가지 블록배치안(수평, 수직방향)의 효율성을 평가하는 것이다 수평배치형은 터미널의 선석방향과 평행하게 장치블록을 배열하는 형태이며, 수직배치형은 선석방향과 직교되게 블록을 배치하는 설계형태를 말한다. 이러한 장치장의 블록배치형태에 따라 야드시스템과 이송시스템의 하역성능이 달라지기 때문에 효율적인 설계가 요구된다고 할 수 있다. 이에, 본 연구에서는 HSS 장치시스템의 2가지의 블록배치안에 대해 장치용량, 생산성, 시설투자, 반출입 외부트럭의 서비스면에서 그 효율성을 상호 비교해 보았다.

• 한국태양에너지학회 논문집
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• 제26권3호
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• pp.79-87
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• 2006

This study aims to presents the applicability of apartment building for renewable energy systems using method of uncomplicated calculation and computer simulation. According to the weather conditions (NASA Surface meteorology and Solar Energy) analysis, it has been found that photovoltaic and wind power system can be applied to apartment buildings application. In case study considering layout and block plan, adaptation of solar water heating, photovoltaic and wind energy system to apartment buildings was proved to produce a profit. And the application strategies of renewable energy systems can be used not only for the investment decisions for economic analysis but also for the comparative analysis of uncomplicated calculation and computer simulation.

• 대한조선학회 특별논문집
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• 대한조선학회 2007년도 특별논문집
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• pp.79-88
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• 2007

In this study, we improved the layout of deckhouse pre-erection area where erects the blocks and developed the pre-erection block arrangement system for the improvement of productivity and effectiveness. The major operating point of the pre-erection area is to fabricate as many as possible that has restrict area and working plate. The developed system has information management module, scheduling module, schedule control module, statistics module, and information integrate module. The heuristic algorithm is issued and evaluated with real data. And genetic algorithm is used for the evaluation of issued it.

• 대한건축학회논문집:구조계
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• 제35권5호
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• pp.169-179
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• 2019

During the initial design stage of apartment complex, the photovoltaic(PV) system has been considered as an alternative of renewable energy system and planned to install at the rooftop floor level in general. The electric power generation characteristics can be influenced by the block layout, building orientation and roof top structure because of azimuth angle, tilt angle, and partial shading. This study aims to investigate power generation characteristics of photovoltaic system in apartment buildings by considering the partial shading conditions due to the block layout, building orientation and roof-top structures. For the photovoltaic module arrangement planning in rooftop floor level, shading areas were firstly analyzed due to the adjacent building structure. And the annual and seasonal power generation of PV system were analyzed through the PVsyst simulation results. The results show that shading period at the roof top surface can be increased due to the parapet and water tank. Initial design power capacity can be decreased by considering the daily insolation period and distance between PV modules through the shading simulation. As the number of PV modules decreases, the annual power generation can be decreased. However annual power generation per unit area of PV modules can be increased and performance ratio can be increased above 80%. Also the power generation of PV system can be critically affected by building orientation and the performance ratio can be drastically decreased in east-oriented buildings due to the shading problems caused by adjacent structures at roof top level such as parapet and water tank.

• 한국멀티미디어학회논문지
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• 제15권12호
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• pp.1506-1516
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• 2012

In a ship block logistics application, acquisition of locations is required in order to identify location of the ship blocks. A Smart device equipped with a GPS sensor can be used as a mobile client for a ship block logistics application. However the precision of GPS components on a commercial smart device is not high enough. Therefore, using the GPS for localization may produce significant positioning errors in a ship block logistics system. This paper proposes a method to reduce errors in measuring locations using a smart device. Based on the knowledge of how the location information is used in a ship block logistics application, and the predictability of the client's moving line based on geographical layout of a shipyard area, our proposed technique enables a better prediction of the ship blocks location. Performance evaluation shows that the proposed technique can significantly reduce the positional error.

• 대한산업공학회지
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• 제35권1호
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• pp.73-86
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• 2009

This paper discusses a method of determining the optimal design of a block. A horizontal layout of blocks is assumed in which transfer points are located at a side of the block. Each block has several transfer points (TPs) each of which is assigned to a group of adjacent bays and located at the center of the assigned group. The goal is to find the optimal size of a block and the optimal number of TPs while minimizing the total cost consisting of the fixed and operational cost of yard cranes (YCs), the operational cost of internal trucks, and the installation cost of TPs. Constraints on the maximum expected system time of trucks are imposed for the optimization. Formulas for estimating handling operation cycle times of a YC are derived analytically. Numerical experiments are conducted to illustrate optimal block designs for a given set of data.

• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2008년도 학술대회 1부
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• pp.579-583
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• 2008

기존 PC용 웹 페이지는 키보드와 마우스, 근거리 디스플레이를 이용하는 환경에 맞추어 많은 정보 제공을 목적으로 복잡한 구성과 작은 폰트로 디자인되어 있다. 따라서, 일정 거리 이상의 시청 거리, 사용자의 기밀한 주의를 요구하지 않는 컨텐츠 제공, 제한적 기능의 리모트 컨트롤러를 사용하여 제어하는 TV에서 동일한 웹 페이지를 사용자에게 제공하기에는 적합하지 않다. 이러한 TV 환경에서 웹 페이지를 효율적으로 브라우징하기 위해 시맨틱 주밍 기법을 적용한 브라우징 방식을 디자인하였다. 기존의 웹 페이지를 분석하여 구성된 컨텐츠를 기반으로 semantic block 을 추출하고, 기존의 레이아웃과 스타일 정보를 분석한 후 현재 환경에 최적의 형태로 컨텐츠를 요약하고 레이아웃, 스타일을 변경하여 재구성한다. 이렇게 재구성된 웹 페이지는 줌 인터페이스를 사용하여 사용자에게 정보의 양을 조정하여 보여준다. 즉, 사용자가 관심 있는 semantic block 을 선택하여 줌-인을 하면 해당 블록이 커지며 더 자세한 컨텐츠로 이루어진 내용을 볼 수 있고, 줌-아웃을 하면 해당 블록이 작아지면서 요약된 컨텐츠로 이루어진 내용을 볼 수 있다. TV 와 같이 큰 디스플레이의 경우 PC 보다 스크롤과 같은 조작을 하기 위해서는 더 많은 노력이 요구됨으로 사용자의 편의를 위해 가로 스크롤은 제거하고 세로 스크롤은 최소화하는 방식으로 채택하였다. 복잡하게 구성된 웹 페이지를 사용자가 원하는 컨텐츠에 쉽게 접근할 수 있도록 요약된 컨텐츠로 재구성하고, TV 환경에 최적화된 레이아웃과 스타일을 제공하여 가독성과 심미성을 향상되도록 하였다.

• 융합신호처리학회논문지
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• 제4권1호
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• pp.64-70
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• 2003

최근 VLSI 회로 설계는 자동 레이아웃(automatic layout) 들을 사용하여 효과적으로 이루어지고 있다. 자동 레이아웃은 VLSI 칩 상에 모듈들의 위치를 결정하는 배치와 각 모듈간을 상호 연결하는 배선 두 가지의 중요한 기능으로 구성되어 있다. VLSI 칩의 성능과 면적은 이 두 가지의 기능을 수행하는 알고리즘의 성능에 따라 크게 좌우된다. 채널 배선은 VLSI 설계 과정중의 하나로, 글로벌 배선을 수행한 후 각 배선 영역에 할당된 네트들을 트랙에 할당하여 구체적인 네트들의 위치를 결정하는 문제이며, 네트들이 할당된 트랙의 수를 최소화하는 문제이다. 본 논문에서는 4-레이어 채널 배선 문제를 해결하기 위한 네트리스트 분할 문제에 대하여 유전자 알고리즘(genetic algorithm; GA)을 이용한 해 공간 탐색(solution space search) 방식을 제안하였으며, 제안한 방식을 여러 문제들에 대해 시뮬레이티드 어닐링 알고리즘과 비교, 분석한 결과 최적, 최악 및 평균비용 측면에서 더 좋은 결과를 얻을 수 있었다.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2008년도 하계학술대회 논문집 Vol.9
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• pp.249-250
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• 2008

In this paper, we propose the single polycrystalline silicon flash EEPROM IC with a new structure which does not need the high voltage switching circuit. The design of high voltage switching circuits which are needed for the data program and erase, has been an obstacle to develop the single-poly EEPROM. Therefore, we has proposed the new cell structure which uses the low voltage switching circuits and has designed the full chip. A new single-poly EEPROM cell is designed and the full chip including the control block, the analog block, row decoder block, and the datapath block is designed. And the each block is verified by using the computer simulation. In addition, the full chip layout is performed.