• Design Convergence Study
• /
• v.14 no.4
• /
• pp.181-192
• /
• 2015

The layout includes various functions not only arrangement, connection, division of information but also affordance and information recognition as the important element that determine the whole structure of information. Recently, the layout of web interface design was gradually changing from the concept of the original Z-layout to F-layout, whereas, it is being changed again into the split layout as the transform of Z-layout. However, there can be lack of grounds as to the reason of the change of layout. Therefore, it needs to study on how the functional difference between the F-layout and Z-layout affects user experience. In this study, we conduct the study on the effect of each layout type on the user experience focusing on the product description of web-page by user test. The user test have shown that the user has better feeling on the split layout based on the Z-layout than F-layout. The Z-layout also has more advantages on the formation of the favorable attitude of user in efficiency, accessibility and concentration. This result is consistent with the trend of web-design to change into the split layout based on the Z-layout and we provided the objective reasons for the effective web-design layout by user test.

• Journal of the Korean Society of Manufacturing Technology Engineers
• /
• v.6 no.1
• /
• pp.100-108
• /
• 1997

Electrostatic precipitator is the equipment that separates dust particles from the gas in which they are suspended. Specially, for the construction of industrial electrostatic precipitator, the corporations would send the layout design to a customer to accept an order. Therefore, it is made a detail drawing after accept ance. Since the layout design of electrostatic precipitator is very complex, it takes time and design errors are included. Thus, for competitiveness in these industries, the development of software for the layout design of electrostatic precipitator is important. In this study, the developed software deals with technical concept and layout design of industrial electrostatic precipitator. By using the software, design time was very short, design errors reduced largely, and the standardization of design could be carried out.

• Korean Journal of Computational Design and Engineering
• /
• v.6 no.3
• /
• pp.174-183
• /
• 2001

This study proposes an improved genetic algorithm (GA) to derive solutions for facility layout problems having inner walls and passages. The proposed algorithm models the layout of facilities on a flour-segmented chromosome. Improved solutions are produced by employing genetic operations known as selection, crossover, inversion, mutation, and refinement of these genes for successive generations. All relationships between the facilities and passages are represented as an adjacency graph. The shortest path and distance between two facilities are calculated using Dijkstra's algorithm of graph theory. Comparative testing shows that the proposed algorithm performs better than other existing algorithm for the optimal facility layout design. Finally, the proposed algorithm is applied to ship compartment layout problems with the computational results compared to an actual ship compartment layout.

• Journal of the Korean Institute of Telematics and Electronics A
• /
• v.30A no.9
• /
• pp.46-58
• /
• 1993

Owing to the nature of locality in mask layouts, it appears that most mask layout problems can be solved by transforming a part of the given mask layout into a better layout segment continuously toward a global suboptimal solution. This notion of local transformation addresses major weak points of existing mask layout processing systems, which lack both extensibility and unifiability. This paper attempts to elaborate upon developing a new rule-based mask layout transformation system wherein most of the mask layout problems can be solved under the unified framework of local mask layout transformation. The rule-based mask layout transformation system is applicable to various mask layout problems such as net extraction, mask layout compaction, mask layout editing, and design rule checking. The experimental results show that the rule-based expert system approach is an efficient means of solving those mask layout problems, and thus confronting major drawbacks of existing layout processing systems.

• Journal of the Institute of Electronics and Information Engineers
• /
• v.49 no.12
• /
• pp.234-241
• /
• 2012

This paper proposes a novel design methodology considering transistor layout variation. The proposed design technique is to improve the transistor's electrical characteristics without performing a circuit simulation to extract transistor layout variation. There are three advantages in the proposed method. Firstly, there is no need to change the normal design flow used in layout designs. Secondly, there is no need to perform simulation in order to extract the transistor layout variation. Thirdly, early warnings in layout design lead to decreasing the number of post layout simulations. Less post layout simulations will decrease the number of iterations in the design cycle and shorten design period. The number of bad transistors in the early design phase were reduced from 17.8% to 2.9% by applying eDRC environment for layout designers to develop Standard Cell Library.

• Design & Manufacturing
• /
• v.9 no.3
• /
• pp.29-33
• /
• 2015

In order to design progressive die many processes are needed and it takes a lot of time to get a final product. In this study, we reduced design processes by using reverse engineering and studied on strip layout design which is the core part of die design. And we got a optimized strip layout design by CimatronE Die Design which is the 3D design program. In this strip layout design we obtained the more effective methode by using reverse engineering.

• Journal of the Society of Naval Architects of Korea
• /
• v.50 no.1
• /
• pp.14-24
• /
• 2013

The marine leisure industry in Korea has been the focus of the power of economic growth and the creation of jobs in recent years. In this regard, many studies concerning marine leisure are on-going in various fields. In this paper, developed a layout system and algorithm can resolve the factory and facility layout problem. For a layout design of leisure-boat factories, the leisure-boat production process is analyzed in order to derive standard production space elements for the layout of the factory. Based on the results, a draft design of the factory layout is carried out based on the manpower planning data, as well as the characteristics and relationships of each process data. A layout design of this paper can be verified through a factory simulation solution and we suggest the verification method using a SBD(simulation based design) methodology. The layout system takes into account the user's accessibility and extendibility, so it is web-oriented and uses RIA (rich Internet Application) technology. Furthermore, the system and layout algorithm of this paper are verified with samples data that show the efficient factory arrangement and practical application method.

• Journal of the Society of Naval Architects of Korea
• /
• v.45 no.2
• /
• pp.202-212
• /
• 2008

In recent days, global shipbuilding companies have been increasing their productivity or expanding their shipyards for a large amount of orders. Though, few researches about the shipyard layout designs have been studied. This research presents a simulation-based shipyard layout design framework to resolve the problems of the shipyard layout design. The shipyard layout design framework was developed on the basis of systems engineering method. The disciplined system engineering technique was guided by ISO/IEC 15288 during the planning phase of the shipyard layout design framework development. This framework suggests that how efficient and effective shipyard layout design could be got, that can satisfy the stakeholder of the layout. Furthermore, it is recommended that how the proposed shipyard layout should be verified and validated by digital simulation model. It is expected that the framework will contribute to not only the improvement of the existing shipyard but also the construction of the new shipyard.

• Proceedings of the KIEE Conference
• /
• 2004.11c
• /
• pp.391-393
• /
• 2004

For performance and stability of a synchronized system, we need an efficient Clock Tree Synthesis(CTS) methodology to design clock distribution networks. In a system-on-a-chip(SOC) design environment, CTS effectively distributes clock signals from clock sources to synchronized points on layout design. In this paper, we suggest the pre-layout analysis of the clock network including gated clock, multiple clock, and test mode CTS optimization. This analysis can help to avoid design failure with potential CTS problems from logic designers and supply layout constraints so as to get an optimal clock distribution network. Our new design flow including pre-layout CTS analysis and structural violation checking also contributes to reduce design time significantly.

• IE interfaces
• /
• v.14 no.1
• /
• pp.20-29
• /
• 2001

This paper presents a concurrent design approach that deals with manufacturing cell formation and cellular layout in Cellular Manufacturing System. Manufacturing cell formation is to group machines into machine cells dedicated to manufacture of part families, and cellular layout problem determines layout of the manufacturing cells within shop and layout of the machines within a cell. In this paper, a concurrent approach for design of machine cell and cellular layout is developed considering manufacturing parameters such as alternative process plans, alternative machines, production volume and processing time of part, and cost per unit time of operation. A mathematical model which minimizes total cost consisting of machine installation cost, machine operating cost, and intercell and intracell movements cost of part is proposed. A hybrid method based on genetic algorithm is proposed to solve the manufacturing cell formation and cellular layout design problem concurrently. The performance of the hybrid method is examined on several problems.