• Proceedings of the KSR Conference
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• 2008.11b
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• pp.482-486
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• 2008

It has been built or remodeled in every year train maintenance centers including subways. However, there is no standard to measure exact capacity. In today, most of criteria is referenced on Japanese. In general, we can standardize the process for 'Train Overhaul Maintenance' because its processes are similar or same patterns. The processes can be the base standard of train maintenance after being classified in detail and validating it. This study is adapt BPR methodology to present standardizes processes and the processes are mapping to layout drawing to constraint from the real world, and then evaluate the capacity using simulation. To guarantee objectivity of input data, we use research data by the National Railroad Administration and Association of Japanese Railway Engineering. Using these data to simulation, we compare to the 'Allowances' and evaluate its adequacy.

• Journal of the Korea Fashion and Costume Design Association
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• v.23 no.3
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• pp.57-71
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• 2021

When teaching traditional pattern-themed textile design, it has been found that many students struggle during the investigation stage of traditional patterns and complete the development of patterns in relatively simple layout methods, such as block patterns and half drop patterns. Until now, digital textile design textbooks lack content on how to develop patterns. Judging that the current teaching method leads to difficulties in developing a new sense of textile design, this study focused on Heesch-tiling tessellation and software called TESS, a program that can transform patterns themselves. This study is an academic study on the methodology of first developing patterns through TESS, a tessellation program developed for elementary school students in the U.S., and then applying various lines and colors to the complete patterns and textures using Adobe Illustrator. In this study, the concept, formative characteristics, and generative principles of Heesch-tiling tessellation were examined, and the process of developing new patterns using the TESS program, which can be used to create patterns through Heesch-tiling principles, was intended to help in textile design education. Therefore, after analyzing the comprehensive concepts and principles of tessellation, the next step is to understand the principles and the characteristics of pattern making only for Heesch-tiling tessellation, and then ultimately to develop new patterns. While patterns using traditional tessellation layouts have been characterized mainly by repeated geometric shapes, Heesch-tiling tessellation can express surrealistic attributes, such as those by painter M. C. Escher or style elements such as those in neo-pop.

• Korean Institute of Interior Design Journal
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• v.20 no.2
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• pp.139-146
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• 2011

An attempt is made to illuminate the characteristics of Korean high-rise apartment plans built after the 1990s in Seoul. Unlike the typical slab block plans of the past century, these plans were accommodated in a super-highrise building which normally integrates some portion of commercial areas on the lower floors. Thus, they are much different from the pre-1990s plans, so needs to have different strategy to adapt to the Korean dwellers' domestic requirements. This study reveals the topological patterns that appear in these new plans, and tries to relate these patterns to the old configuration patterns of the slab-type apartment houses. From the analysis, it was found that some important Korean dwellers' characteristics are still preserved, but at the same time, some unprecedented patterns were beginning to be absorbed into the spatial arrangement. At the end, suggestions are made on how this emerging trend of super-high rise can be better understood and evolved to enhance the living quality in a new multi-unit setting.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2001.11a
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• pp.113-117
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• 2001

This study aims to analyze the relation between furniture arrangement and ventilation. In this study, the furniture layout of students'bedroom have been classified three kinds of patterns so that the air flue of the rooms can be analyzed. According to the results of the study, it is showed that the furniture arrangements have influenced the ventilation efficiency and it has been recognized that space plan needs the applicable study.

• Computational Structural Engineering : An International Journal
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• v.1 no.1
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• pp.21-29
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• 2001

The general topology optimization can be considered as optimal material distribution. Such an approach can be unstable, unless composite materials are introduced. In this research, a nodal volume fraction method is used to obtain the optimum topology of continuum structures. This method is conducted from a composite material model composed of isotropic matter and spherical void. Because the appearance of the chessboard patterns makes the interpretation of the optimal material layout very difficult, this method contains a chessboard prevention strategy. In this research, several topology optimization problems are presented to demonstrate the validity of the present method and the recursive quadratic programming algorithm is used to solve the topology optimization problems.

• Journal of the Ergonomics Society of Korea
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• v.29 no.4
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• pp.455-463
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• 2010

Work-related musculoskeletal disorders (WMSDs) are recognized as leading causes of significant human suffering, loss of productivity, and economic burdens on our society. WMSDs are associated with work patterns that include fixed or constrained body positions, continual repetition of movements, force concentrated on small parts of the body, cold environment and vibration. Main effort to protect workers from WMSDs should focus on avoiding repetitive patterns of work through engineering controls which may include mechanization, ergonomic design of tools and equipment, and workplace layout. Where elimination of the risk factors is not practical, administrative controls involving job rotation, job enlargement and enrichment, teamwork should be considered.

• Journal of KIISE
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• v.42 no.8
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• pp.1049-1056
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• 2015

Runtime Intrusion Prevention Evaluator (RIPE), published in 2011, is a benchmark suite for evaluating mitigation techniques against 850 attack patterns using only buffer overflow. Since RIPE is built as a single process, defense and attack routines cannot help sharing process states and address space layouts when RIPE is tested. As a result, attack routines can access the memory space for defense routines without restriction. We separate RIPE into two independent processes of defense and attacks so that mitigations based on confidentiality such as address space layout randomization are properly evaluated. In addition, we add an execution mode to test robustness against brute force attacks. Finally, we extend RIPE by adding 38 attack forms to perform format string attacks and virtual table (vtable) hijacking attacks. The revised RIPE contributes to the diversification of attack patterns and precise evaluation of the effectiveness of mitigations.

• International Journal of High-Rise Buildings
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• v.6 no.2
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• pp.139-147
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• 2017

Analyzing morphological evolution over a long period of time is deemed an effective way to identify problems occurring in the process of urban development, in addition to achieving a fundamental understanding of socio-cultural changes and growth rooted from the context. As far as the urban morphology is concerned, Hong Kong is characterized by its unique high-density and compact layout patterns, which have aroused the interest of a number of authors in the urban design domain. Whilst an increasing number of redevelopment projects in Hong Kong were criticized for ignoring and destroying the old urban fabric, there is a need for research to investigate the origins and changes of various urban patterns and their implications for society. By employing the theories and techniques of space syntax, this paper accordingly provides a morphological analysis based on the Wanchai District - a 'Segment-line' city, which particularly epitomizes various urban grids of Hong Kong and may have different implications for functional aspects. By axial-mapping the urban layouts of five stages of growth since 1842 and subsequently investigating their spatial and functional transformation over the past 170 years, this paper identifies a series of spatial characteristics underlying different grid patterns, as well as achieves a precise understanding of their ever changing relationship. Based on these understandings, this paper intends to provide valuable reference and guidance for upcoming spatial development in Hong Kong and other regions.

• Journal of the Korean housing association
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• v.7 no.1
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• pp.15-24
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• 1996

This study attempts to explore the organization of domestic space in Belgium and then to compare them with those found in Korea. Data were collected by questionnaires mailed to 110 staff members, both academic an dadministrative, working at Vrije Universiteit Brussel in Belgium.The major findings of the study can be summarized as fllows: First, the most common pattern of Belgian LDK(living-room dining-room and kichen) layout is the LD type, which separates K from L and D by wall or door while linking L and D to each other. On the other hand, a large portions of Korean LDK layout is the DK type , which seperates L from D and H, but D and K are interconnected. As expected, the bigger the size of floor space, the more likely L-D-K type is to be, which places L, D, and f, separate each other. And the smaller the sire the more probable the DK type and/or the one room type would be, where L, D and K are merged into one room. Second, the enterance of domestic space in Belgium is normally found adjacent to public space. The Belgian entrance often forms a space independent from other parts of the house, or a space that leads directly to garage. These two patterns are rarely found in Korea. Third, Belgians tend to locate Kichen in the front of the house when they design apartment units, Whereas it is not the case in Korea where it is located in the rear.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.05a
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• pp.681-684
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• 2008

In this paper, triple band mobile chip antenna for DCS($1.71{\sim}1.88GHz$) / PCS($1.75{\sim}1.87GHz$) / UPCS($1.85{\sim}1.99GHz$) on PCB Layout is fabricated. As designed and fabricated antenna is loaded PCB layout, that plate a both side at two independence patterns(upper & lower) to reduce the size and a capacitor for DCS, PCS, UPCS band is proposed. The antenna has a small size of about $19mm{\times}4mm{\times}1.6mm$, narrow bandwidth which is the defect of chip antenna is improved. Bandwidth of fabricated antenna to VSWR less than 2 is satisfied and all bandwith is acquired 15.1 % at $1.71GHz{\sim}1.99GHz$.