• Journal of Power System Engineering
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• v.16 no.2
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• pp.11-16
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• 2012

In this paper, the authors formulate the sensitivity analysis algorithm for the natural frequency of a torsional shafting by expanding the transfer stiffness coefficient method. The basic concept of the present algorithm is based on the transfer of sensitivity stiffness coefficient, which is the derivative of stiffness coefficient with respect to design parameter, at every node from the first node to the last node in analytical model. The effectiveness of the present algorithm is confirmed by comparing the results of the sensitivity analysis and those of the reanalysis for the natural frequencies of a torsional shafting with a constant cross section. In numerical calculation, the design parameter is the diameter of the shaft element of the torsional shafting.

• Journal of Korean Society for Quality Management
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• v.28 no.4
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• pp.140-150
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• 2000

MBNQA(Malcolm Baldrige National Quality Award) was established in 1987 in order to promote the spread of TQM in U.S. Likewise, JQA(Japanese Quality Award) was set up in 1995 in order to upgrade the level of TQM activities in Japan. MBNQA and JQA are quite the same in their basic concept, values, and the process of the examination, but they differ in the contents of the criteria. The objective of this study is to identify the differences between MBNQA and JQA in terms of strategy planning category. Therefore, in this paper, strategy planning category is analyzed, especially its theoretical validity is examined by literature review. The major differences are as follows: JQA emphasizes strongly the evaluation process than MBNQA by requiring the measuring of the level of strategic achievement. On the other hand, in MBNQA, strategic objectives must be estimated by decision analysis techniques, scenario tools, and other statistical methodologies.

• Journal of Korean Society of Rural Planning
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• v.14 no.4
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• pp.69-76
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• 2008

The purpose of this study is to propose the rural landscape planning criteria for Korean rural area. For this, the meaning of rural landscape is defined, and the legislative framework and several legal processes are surveyed, including the deliberation system for natural landscape impacts and the Landscape Law recently legislated. Through literature studies and analysis, the rural landscape planning criteria are proposed, which have step-by-step processes; goals and objectives, analysis and estimation for present conditions, basic planning concept, landscape planning for different visual landscape types, landscape designing for visual elements, and practical action plans. Each processes are designed considering the existing legislative framework, so it can be well-matched to current systems. But, because there are few rural landscape plans so far, comparing to the urban landscape plans, the validity of this criteria should be verified in the future studies.

• Communications for Statistical Applications and Methods
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• v.8 no.2
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• pp.543-556
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• 2001

This study suggests integrated neural network modes for he stock price index forecasting using change-point detection. The basic concept of this proposed model is to obtain significant intervals occurred by change points, identify them as change-point groups, and reflect them in stock price index forecasting. The model is composed of three phases. The first phase is to detect successive structural changes in stock price index dataset. The second phase is to forecast change-point group with various data mining classifiers. The final phase is to forecast the stock price index with backpropagation neural networks. The proposed model is applied to the stock price index forecasting. This study then examines the predictability of integrated neural network models and compares the performance of data mining classifiers.

• Journal of applied mathematics & informatics
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• v.26 no.3_4
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• pp.707-720
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• 2008

Molodtsov [12] introduced the concept of soft set as a new mathematical tool for dealing with uncertainties that is free from the difficulties that have troubled the usual theoretical approaches. In this paper we apply the notion of soft sets by Molodtsov to commutative ideals of BCK-algebras, The notions of commutative soft ideals and commutative idealistic soft BCK-algebras are introduced, and their basic properties are investigated. Examples to show that there is no relations between positive implicative idealistic soft BCK-algebras and commutative idealistic soft BCK-algebras are provided.

• 한국전산유체공학회:학술대회논문집
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• 2001.10a
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• pp.76-83
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• 2001

The incompressible Reynolds-averaged Navier-Stokes equations are solved to predict the aerodynamic characteristics of an airship hull. The concept of pseudo-compressibility is employed to couple the pressure field with the velocity field. The upwind differencing method for spatial discretization and a line relaxation scheme for time integration are used. The flowfield around the low drag airship hull of fineness ratio 4 is solved for two Reynolds numbers with a wide range of angle of attack. The effect of Reynolds number and transition position is briefly examined together with the change in aerodynamic coefficients due to a gondola attached to the hull, and the results will be used as basic data for the design of a low drag airship hull.

• Korean Institute of Interior Design Journal
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• no.14
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• pp.55-62
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• 1998

One of the major changes in the information era is that the concept of workplace is changing, Therefore this research is to provide basic data for future home office design by surveying office workers's opinions about preferred design for home office. This research is based on a survey of 215 office workers in Seoul. The major findings are ; Office workers prefer an isolated type of workplace that is arranged by U-shped workstation at home. Office workers preferred ivory color of walls and ceiling in home office, Brown color for the floor and brown ivory beige green and grey colors are preferred for the furniture. For home office furniture office workers put to an importance on desk chair computer table cabinet filbox sofa mobil lack credenza, and tea table.

• Korean Institute of Interior Design Journal
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• v.13 no.4
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• pp.56-65
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• 2004

Contemporary Architecture is showing many aspects on the ground of ecological paradigm, while, searching for a new architectural direction to make importance of environment that has been still little accounted of a subject of discussion. And 'sustainability'will become a central concept of a Contemporary architectural topic, continuously. With a demand of the time, ecological inclinations have been started to develop a collective low-rise housing project. It is going to expands several fields, but for reasons of social economic activity for human fundamental being, potentialities of basic problem solution are enough for ecologyㆍenvironment, but distinct direction and measures are still not obvious conditions. This study is for healing restoration in global environment, with architectural approach, through analyzing relation between ecological architectural space and nature, and abstracts various inter-relational aspect's specific character. the purpose of this study is another approach of intimate relation of ecological architecture and nature. Therefore, this study is significant to be on the search for a start to suggest a new point of view to ecological architectural space.

• Korean Institute of Interior Design Journal
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• v.13 no.1
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• pp.30-37
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• 2004

Architect Daniel Libeskind made peculiar works with ‘Jewish Museum’ in Berlin as a momentum in 1989. The concern was concentrated after Libeskind was selected ultimately to the designer of ‘Design for the World Trade Center site’ in February 2003. Especially his works which have been recently accomplished are not the deconstructivism were recognized as unreal drawings and simple studies but they are professing his own peculiar architectural thought. However meanwhile researches about Libeskind have been processed in an architect viewpoint of a deconstructivism tendency, lack of researches to be more various point of view. This study fundamentally is sharing the source with Libeskind's basic idea, as a deconstructivism architect, but not to understand essential concept of decorstructivism which has the philosophy grasps of essence of an object, reconstrues contradiction that the human is simple to prescribe by the language and tries to express in new architectural formative volition. Therefore, the purpose of this study is to grasp of Libeskind's own architectural thought of the essence, consider background becomes the foundation of the architectural thought and peculiarity of the architectural representation.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2006.05a
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• pp.145-149
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• 2006

China which has 960km of domain area is one of the biggest countries in the world. Also China has a large population of 1,300,000,000 which are 25% of total world population and consist of 56 ethnic groups. In addition, History of China is immemorial and Confucianism of feudalistic and Taoism idea have effect on Chinese for a long time and architecture is influenced by them. Thus a large degree of variety, abundance, and uniqueness can be found in Chinese traditional dwelling. This research will be focusing on Sanapwon, a traditional housing in Beijing, which represents China's original and distinctive dwelling features. By looking at Sanapwon, we can learn the distinguishable characteristics of Chinese residential area and understand the concept of space. By looking closely at the worldly outlook, historical view, originality, and the spatial notion centered around human beings, many types of Sanapwon and its formation process have been examined Likewise indoor plane construction, and basic element of composition of space will help to study the whole of residing space.