• Proceedings of the KIEE Conference
• /
• 1999.11b
• /
• pp.226-228
• /
• 1999

This paper presents a dynamic simulation algorithm for studying the effect of Unified Power Flow Controller(UPFC) on the low frequency power system oscillations and transient stability studies. The algorithm is a Newton-type one and gives a fast convergence characteristics. The algorithm is applied to inter-area power oscillation damping regulator design of a sample two-area power system. The results show that UPFC is very effective for damping inter-area oscillations.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2009.11a
• /
• pp.183-189
• /
• 2009

In this study, the growth diagnosis of root is analyzed through plant's auxanology point of view, and the inductive root barrier ability of panel type waterproofing method which is designed to deal with it, is confirmed positively through long term(2 years) mock-up test. Moreover, basic ideas for inductive root barrier design in joint is presented through this study. The experiment result for the root barrier of sealed A-type during 24 months, there were no damages found on the waterproofing layer. -urethane sealing material was used to apply for waterproofing of joint- for roots. As the result, it was confirmed that it is possible to maintain the root barrier of method through applying inductive root barrier design such as the installation of decreasing space of bearing power which considers the growth diagnosis of root, even if the root barrier was not secured.

• Korean Institute of Interior Design Journal
• /
• v.17 no.2
• /
• pp.67-74
• /
• 2008

In Korea, multi-functional senior residential complexes have become very popular since the end of 1990 by integrating the functions of nursing homes and health care facilities, so that the elderly can maintain their regular healthy life and receive health care when needed depending on their aging stage. Accordingly, it is increasingly important to conduct research on such multi-functional residential facilities. In this study, 6 cases of Korean senior residential complexes and 6 cases of comparable Japanese facilities, which were built earlier than Korea, are compared, and the following results are derived from the comparison. 1. In terms of the shared space, the parallel type and the unified type are found to share more space among complex types. Especially, the low-story concentration type and the eccentric type are found to share space the most. 2. In Korea, an average shared rate is found to be 46.8%; and the rates of a supplied-space, a common-shared-space, and a maintenance-space are found to be 29.73%, 36.33%, and 32.93%, respectively. In Japan's case, an average shared space is found to be 22.31%; and the corresponding rates for the above 3 spaces.

• Korean Institute of Interior Design Journal
• /
• v.14 no.3 s.50
• /
• pp.216-223
• /
• 2005

In this study, we would like to suggest a virtual model house where the users participate in the planning of the apartment directly in order to supply the apartment which is suitable for the fast change of the resident's characterization, multiplication, and preference in this like high-speed information society. The users have various preferences and demands in the high level information society. It is necessary for the architect to communicate with the users in order to suggest the various styles of habitats that one can treat various life style and life cycle which reflects the demand. In addition, the object of this paper is the construction and using of the participating virtual model house that the resident can plan the preferred space design of the main house before moving Into the apartment and change space design of the main house after moving into the apartment following the variety of life style and the changing of life cycle. Regarding the effect of this study, firstly, it is possible to supply the plate type following the user's preference in order to enhance the quality of uniformed type apartment. Secondly, it is possible to maintain and control the high quality building using sharing the building information with planning, construction, maintain, interior, and related company by constructing the database. Thirdly, the unified database which is constructed by XML can supply the effective environment of apartment information exchange between other companies.

• Journal of Fashion Business
• /
• v.14 no.6
• /
• pp.11-22
• /
• 2010

The main purpose of this research was to examine the linguistic characteristics of domestic men's formal wear brand name. Four linguistic characteristics of language type, combined structure type of language, word class, length of brand name were investigated in this research and also examined the difference between brand type. For sample selection, the 209 men's fashion brands were selected from '2009 Korea Fashion Yearbook' and then, 25 brands which could not collect proper informations about the brand name or naming were excluded. Among total 184 men's brand names, 66 men's formal wear brands were selected and studied. For data analysis, quantitative evaluation of the frequency and qualitative evaluation have been used. The result as follows.; (1) Seven language types were found in domestic men's formal wear brand names. English has been used the most, then followed by Italian and French. (2) For combined structure type of brand name language, the single word used the most, followed by separately combined word type, artificially combined word, and unified word type. (3) The most frequently used the type of word class was noun, and followed by phrase, adjective, and verb. In the noun type, 6 different types which expressed a person, concrete & abstract entity, place, acronym, and neologic were found. For phrase, only noun type was appeared, however, 6 out of 20 phrases were abbreviated type. All eight adjective brand names implied an attributive character of the brand such as 'Dainty' or 'Solus(Solo)'. (4) The long name used most and then followed by normal and short length of brand name. Looking by the number of syllable, 4 syllables appeared the most and then followed by 3, 5, 6, 2 & 7 showed the same rate, and 8 syllables. (5) The result which compared the difference according to each brand type showed a difference in its language type, language combined style, word class, but length of brand name.

• Journal of Korean Society of Industrial and Systems Engineering
• /
• v.23 no.55
• /
• pp.107-116
• /
• 2000

Electronic Commerce is purchasing or sales a products and services to customers using computer network. It is different to traditional commerce. Also, It divide into business to business commerce and business to customer commerce. Cyber Shopping Mall is a representative type of business to customer commerce. The interest and demand of national business to customer commerce is explosively increasing with industry. It expect to reach 61 billion won in the 2000. Thus Structure of Cyber Shopping Mall is the more complex and the more vary types. It is the problem that change of established Cyber Shopping Mall structure is very difficult. The purpose of this study Is designed to Cyber Shopping Mall Purchase Process that deal with quickly changable internet environment and meet the needs of customers immediately using UML(Unified Modeling Language) in design phase determinant of Cyber Shopping Mal1 structure. Cyber Shopping Mall Purchase Process is designed to have objective-oriented development methodology's advantage. It has a flexibility in case of shopping mall structure change and acts as useful guideline in design phase of construction of Cyber Shopping Mall.

• Steel and Composite Structures
• /
• v.45 no.3
• /
• pp.305-330
• /
• 2022

This article aims to investigate the static deflection and stress analysis of bi-directional functionally graded porous plate (BDFGPP) modeled by unified higher order kinematic theories to include the shear stress effects, which not be considered before. Different shear functions are described according to higher order models that satisfy the zero-shear influence at the top and bottom surfaces, and hence refrain from the need of shear correction factor. The material properties are graded through two spatial directions (i.e., thickness and length directions) according to the power law distribution. The porosities and voids inside the material constituent are described by different cosine functions. Hamilton's principle is implemented to derive the governing equilibrium equation of bi-directional FG porous plate structures. An efficient numerical differential integral quadrature method (DIQM) is exploited to solve the coupled variable coefficients partial differential equations of equilibrium. Problem validation and verification have been proven with previous prestigious work. Numerical results are illustrated to present the significant impacts of kinematic shear relations, gradation indices through thickness and length, porosity type, and boundary conditions on the static deflection and stress distribution of BDFGP plate. The proposed model is efficient in design and analysis of many applications used in nuclear, mechanical, aerospace, naval, dental, and medical fields.

• Advances in concrete construction
• /
• v.1 no.2
• /
• pp.163-185
• /
• 2013

The use of post-compressed plates (PCP) to strengthen preloaded reinforced concrete (RC) columns is an innovative approach for alleviating the effects of stress-lagging between the original column and the additional steel plates. Experimental and theoretical studies on PCP-strengthened RC columns have been presented in our companion papers. The results have demonstrated the effectiveness of this technique for improving the strength, deformability and ductility of preloaded RC columns when subjected to axial or eccentric compression loading. An original and comprehensive design procedure is presented in this paper to aid engineers in designing this new type of PCP-strengthened RC column and to ensure proper strengthening details for desirable performance. The proposed design procedure consists of five parts: (1) the estimation of the ultimate load capacity of the strengthened column, (2) the design of the initial pre-camber displacement of the steel plate, (3) the design of the vertical spacing of the bolts, (4) the design of the bearing ends of the steel plates, and (5) the calculation of the tightening force of the bolts. A worked example of the design of a PCP-strengthened RC column is shown to demonstrate the application of the proposed design procedure.

• Journal of The Korea Institute of Healthcare Architecture
• /
• v.3 no.5
• /
• pp.67-78
• /
• 1997

Recently, hospital architecture is in the transition period which faces a great change. Patients' demands on medical services have been changing and hospitals have been feeling the need to innovate their facilities in order to prepare for the upcoming challenges in the field such as global competition, market opening, etc. In addition, every hospitals requires the creative and novel design which is different from the conventional concept to deal with various circumstances. Accordingly, various space arrangements are proposed against the past unified hospital type. This study is designed to consider and evaluate the prospects of hospital architecture by analyzing the space allocation type of representative hospitals which are being recently constructed in Korea.

• Journal of Korea Multimedia Society
• /
• v.11 no.6
• /
• pp.883-890
• /
• 2008

It becomes enabled to provide variety of multimedia contents through mobile service with the development of high-speed 3rd generation mobile communication and handsets. MMS (Multimedia Messaging Service) can be displayed in the presentation format which is unified the various multimedia contents such as text, audio, image, video, etc. It is applicable as a new type of ubiquitous learning. In this study we propose to design a mobile learning system by providing profiles which meets the standard of CC/PP and by generating multimedia messages based on SMIL language through the adaptation steps according to the learning environment, the content type, and the device property of learners.