The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Jong-gye Shin - One of the best experts on this subject based on the ideXlab platform.
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A study for production simulation model generation system based on data model at a shipyard
International Journal of Naval Architecture and Ocean Engineering, 2016Co-Authors: Myung-gi Back, Dong-kun Lee, Jong-gye Shin, Jong-hoon WooAbstract:Simulation technology is a type of Shipbuilding product lifecycle management solution used to support production planning or decision-making. Normally, most Shipbuilding processes are consisted of job shop production, and the modeling and simulation require professional skills and experience on Shipbuilding. For these reasons, many Shipbuilding companies have difficulties adapting simulation systems, regardless of the necessity for the technology. In this paper, the data model for shipyard production simulation model generation was defined by analyzing the iterative simulation modeling procedure. The shipyard production simulation data model defined in this study contains the information necessary for the conventional simulation modeling procedure and can serve as a basis for simulation model generation. The efficacy of the developed system was validated by applying it to the simulation model generation of the panel block production line. By implementing the initial simulation model generation process, which was performed in the past with a simulation modeler, the proposed system substantially reduced the modeling time. In addition, by reducing the difficulties posed by different modeler-dependent generation methods, the proposed system makes the standardization of the simulation model quality possible.
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system development and applications of a shipyard layout design framework
Journal of ship production and design, 2010Co-Authors: Young Joo Song, Dong-kun Lee, Jong Hun Woo, Jong-gye ShinAbstract:Shipyard design and the equipment layout problem, which is directly linked to the productivity of ship production, is an important issue in the production planning of mass production of ships. In many cases, Shipbuilding yard design has relied on the experience of the internal engineer, resulting in sporadic and poorly organized processes. Consequently, economic losses and the trial-and-error involved in such a design process are inevitable problems. In this paper, a checklist of major elements is defined in order to fine-tune the Shipbuilding yard designing process. The input/ output data based on the simulation of a Shipbuilding yard layout designing framework and methodology proposed in previous research is also defined. Initial architecture is executed to develop software that integrates all the relevant processes and designing tools. In this course, both user request and design data by the steps are arranged and organized in the proposed layout design template form. In addition, simulation is carried out based on the parent Shipbuilding process planning and scheduling data of the ship product, Shipbuilding process, and work-stage facilities that constitute the Shipbuilding yard. In addition, design items are verified and optimized with a layout and equipment list that shows optimal process planning and scheduling effects. All of the content of this paper is based on the simulation-based Shipbuilding yard layout designing methodology, while the initial architectural processes are based on object-oriented development methodology and systems engineering methods.
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large engineering project risk management using a bayesian belief network
Expert Systems With Applications, 2009Co-Authors: Eunchang Lee, Yongtae Park, Jong-gye ShinAbstract:This paper presents a scheme for large engineering project risk management using a Bayesian belief network and applies it to the Korean Shipbuilding industry. Twenty-six different risks were deduced from expert interviews and a literature review. A survey analysis was conducted on 252 experts from 11 major Korean Shipbuilding companies in April 2007. The overall major risks were design change, design manpower, and raw material supply as internal risks, and exchange rate as external risk in both large-scale and medium-sized Shipbuilding companies. Differences of project performance risks between large-scale and medium-sized Shipbuilding companies were identified. Exceeding time schedule and specification discontent were more important to large-scale Shipbuilding companies, while exceeding budget and exceeding time schedule were more important to medium-sized Shipbuilding companies. The change of project performance risks was measured by risk reduction activities of quality management, and strikes at headquarters and subcontractors, in both large-scale and medium-sized Shipbuilding companies. The research results should be valuable in enabling industrial participants to manage their large engineering project risks and in extending our understanding of Korean Shipbuilding risks.
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a shipyard layout design system by simulation
Journal of The Society of Naval Architects of Korea, 2008Co-Authors: Young Joo Song, Dong-kun Lee, Jong Hun Woo, Jong-gye ShinAbstract:Shipyard design and equipments layout problem, which are directly linked with the productivity of ship production, is an important issue serving as reference data of production plan for later massive production of ships. So far in many cases, design of a shipyard has been relying on the experienced engineers in Shipbuilding, resulting in sporadic and poorly organized processes. And thus, economic losses as well as trials and errors in that accord have been pointed out as inevitable problems. This paper extracts a checklist of major elements to fine tune the Shipbuilding yard designing process and the input/output data based on the simulation based Shipbuilding yard layout designing framework and methodology proposed in existing researches, and executed initial architecture to develop software that integrates all the relevant processes and designing tools. In this course, both user request and design data by the steps are arranged and organized in the proposed layout design template form. In addition, simulation is done based on the parent Shipbuilding process planning and scheduling data of the ship product, Shipbuilding process and work stage facilities that constitute Shipbuilding yard, and design items are verified and optimized with the layout and equipment list showing optimal process planning and scheduling effects. All the contents of this paper are based on simulation based Shipbuilding yard layout designing methodology, and initial architecture processes are based on object oriented development methodology and system engineering methods. 접수일자: 2008 년 4 월 9 일, 승인일자: 2008 년 6 월 3 일 † 교신저자: syj092@snu.ac.kr, 018-275-1799 시뮬레이션 기반 조선소 레이아웃 설계 시스템 개발 대한조선학회 논문집 제 45 권 제 4 호 2008 년 8 월 442 ※
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development of product model management system for naval Shipbuilding
Journal of ship production, 2008Co-Authors: Yeon Hwan Jeong, Jong-gye Shin, Yonggyun Kim, Yong Hwan Yeo, Cheolho RyuAbstract:Since the concept of integrated product development environment (IPDE) was introduced from the US Department of Defense, the Korean navy has made efforts to apply the concept to its naval design and production. Recently, the Korean navy has supported a project for naval Shipbuilding to achieve the advanced defense acquisition program. This project focuses on the integration of naval Shipbuilding information. The Product Model Management System (PMMS) for Korean naval acquisition was a partial result of the project. The architecture of PMMS and the product structure of a naval ship are proposed in this paper. Also, the data acquisition process among acquisition program administration offices and contractors is defined for the construction of three-dimensional naval ship product models in PMMS. By constructing the product model on previous Korean naval ships, the PMMS was confirmed to a suitable innovative acquisition strategy. PMMS is on the leading edge of new product and process innovations in the Korean naval Shipbuilding.
Donghun Lee - One of the best experts on this subject based on the ideXlab platform.
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Robots in the Shipbuilding industry
Robotics and Computer-integrated Manufacturing, 2014Co-Authors: Donghun LeeAbstract:Abstract In this paper, details of the uses of various robots in the Shipbuilding process are provided, with an emphasis on newer developments and applications. The current state of robot applications will be discussed according to the priority of the Shipbuilding process. First, various robots for open structures, such as several types of welding carriages and 6-axis articulated robot manipulators, will be reviewed in terms of their mechanisms and applications. Second, several attempts to design autonomous mobile robotic systems for closed blocks of the double-hulled structure of a ship will be discussed in terms of the performance characteristics of their proposed self-traveling mechanisms. Lastly, all corresponding technologies for overcoming structural complexities in closed blocks as well as future directions of robot automation in the Shipbuilding industry are also discussed.
Moises Batista - One of the best experts on this subject based on the ideXlab platform.
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achieving a sustainable Shipbuilding supply chain under i4 0 perspective
Journal of Cleaner Production, 2020Co-Authors: Magdalena Ramirezpena, Alejandro Sanchez J Sotano, Victor Perezfernandez, Francisco J Abad, Moises BatistaAbstract:Abstract Industry 4.0 (I4.0) considers a number of changes in enterprises, including business models, to achieve the Smart Factory concept. This implies a complete communication network between different companies, factories, suppliers, resources, etc …, maximize in real time to achieve the highest efficiency of all parties involved. The goal is to improve the performance and sustainability of Shipbuilding industry through the supply chain establishing a model that defines how the supply chain should be under the perspective of Industry 4.0. Thus, this article aims to connect each of the key enabling I4.0 technologies with the most significant supply chain paradigms: Lean, Agile, Resilience and Green to define what the Shipbuilding Supply Chain should be. This study shows the Green Supply Chain Paradigm connects the social aspects required at the performance I4.0 model. Likewise, Lean represents the most important paradigm, encompassing the Resilience one, besides considering Agile as an intrinsic property of the Shipbuilding. At this form, identifying the key factors in the conceptual model, it is possible to conclude that the Shipbuilding Supply Chain should be Green and Lean.
Shouyang Wang - One of the best experts on this subject based on the ideXlab platform.
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energy efficiency decision and selection of main engines in a sustainable Shipbuilding supply chain
Transportation Research Part D-transport and Environment, 2017Co-Authors: Gang Xie, Wuyi Yue, Shouyang WangAbstract:Abstract For the improvement of sustainability in a Shipbuilding supply chain, we first analyze the decisions on the energy efficiency of main engines (EEME) and the price of the Shipbuilding service. Then, objective functions are developed for the portfolio selection of main engines according to different supply chain strategies. Furthermore, experimental analysis is conducted to make observations and illustrate some related issues. The results suggest that technological innovations should be advocated to reduce the fixed costs for effective improvements of the EEME. When supply chain coordination is realized, the best environment performance and the highest consumer surplus can be achieved.
Joe Zhu - One of the best experts on this subject based on the ideXlab platform.
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an integrated approach for ship block manufacturing process performance evaluation case from a korean Shipbuilding company
International Journal of Production Economics, 2014Co-Authors: Jaehun Park, Dongha Lee, Joe ZhuAbstract:For effective ship manufacturing, a ship is divided into hundreds of properly sized blocks in the design stage. Each block is produced in its own manufacturing process, and subsequently the blocks are assembled into the body of a ship. Performance evaluation of the block manufacturing process (BMP) has been an important issue in the Shipbuilding industry, since the BMP is related to overall Shipbuilding productivity. However, performance evaluation of BMP entails many difficulties due to the many block types and many differences between actual and planned operations. To address this issue, this paper proposes a systematic approach to evaluate the performance of BMPs by integrating process mining (PM) and data envelopment analysis (DEA). The approach evaluates performance based on actual work data, which are saved in the databases of production information systems, and provides guidelines for the improvement of underperforming BMPs in relation to the manufacturing processes. For demonstrative purpose, the proposed approach is applied to a Korean Shipbuilding company.
