• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2006.05a
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• pp.302-308
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• 2006

We introduce the concept of a remote distributed embedded system to integrated fieldbus based control systems in internet/Intranet. As a result fieldbus systems are opened up for remote monitoring, remote maintenance, and remote control applications using state of the art Web-technology. This paper addresses the design of a remote distributed embedded system using Internet and CAN for multi-Induction motor of Building and Industrial field. The fieldbus used the CAN based networked intelligent multi-motor control system using DSP2812 microprocessor. To build such a system, the TCP/IP-CAN Gateway which convert a CAN protocol to TCP/IP protocol and vice verse, was designed. A experimental simulation system consists of a TCP/IP-CAN Gateway in remote place and a command PC ti be connected ti Ethernet.

• Proceedings of the KSR Conference
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• 2008.11b
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• pp.679-686
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• 2008

There has been an increasing demand of introducing innovative public transport modes meriting high flexibilities of a bus mode along with on-time accuracy and quality environment-friendliness of a rail mode, as it is considered to significantly contribute to reducing huge social expenditures on the traffic congestion and environmental pollution agenda, and to be an alternative solution to better the urban transport problems. In order to comply with the need, Seoul Municipal Government has recently decided to build up GRT system of a new concept in Nangok area in Seoul, the first in its kind in Korea. The concession has been awarded to Seoul Metro. This thesis will study and benchmark similar systems abroad under operation, and further review necessary requirements overall which would secure full readiness for the operation of Nangok GRT system.

• International conference on construction engineering and project management
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• 2009.05a
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• pp.1410-1413
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• 2009

A city development has been focused on solving a housing shortage of city resulted from rapid industrialization and population increase in city. However, such a development has caused many problems in environment, economy, safety, and so on. In recent, therefore, a new paradigm of a city development is required, and thus ubiquitous city (U-City) concept appears. U-City development, which combines construction method and IT technique, creates a new composite space, and help people improve quality of life in terms of solving many problems caused by existing method of a city development. However, there is no guide to build U-City up to date, and most present U-City projects have processed following past method of city development. Therefore, an objective of this paper is to suggest an explicit procedure of enforcement design in U-City system.

• Korean Journal of Social Welfare Studies
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• v.40 no.2
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• pp.145-182
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• 2009

This study aimed to build up the concept of culture welfare. For this purpose, we analyzed the practitioners' understanding about culture welfare in culture and social welfare by Modified Grounded Theory Approach. The results showed that the practitioners did not understand the concept of culture welfare clearly, and revealed being in confusion. Their understandings about culture welfare were classified into five types, 1) a type denying a terminology, culture welfare itself, 2) a type without awareness about culture welfare, 3) a type regarding culture welfare as sub realm in the special domain of culture and social welfare, 4) a type undividing and integrating culture and social welfare, 5) a type recognizing an independent domain of culture welfare. But despite of large deviation like this, the practitioners were common to give emphasis on giving opportunities to everyone in the enjoyment of culture, for heightening the quality of life. Summing up, culture welfare is defined as 'all direct and indirect effort in culture and arts, in a narrow sense to economical vulnerable class, and in a broad sense to everyone, to raise cultural susceptibility, creative thinking, and potential competence for realization a life worthy of man. The significance of this study is in establishment the definite and practical concept of culture welfare through a deep analysis the practitioners' understanding. This will give the theoretical basis to the study and the development of various programs in culture welfare.

• Journal of Power System Engineering
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• v.21 no.6
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• pp.56-61
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• 2017

The check valves are mechanical valves that permit fluids to flow in only one direction, preventing flow from reversing. It is classified as one way directional valves. There are various types of check valves that used in a marine application. A lift type check valve uses the disc to open and close the passage of fluid. The disc lift up from seat as pressure below the disc increases, while drop in pressure on the inlet side or a build up of pressure on the outlet side causes the valve to close. An important concept in check valves is the cracking pressure which is the minimum upstream pressure at which the valve will operate. On the other hand, optimization is a process of finding the best set of parameters to reach a goal while not violating certain constraints. The AMESim software provides NLPQL(Nonlinear Programming by Quadratic Lagrangian) and genetic algorithm(GA) for optimization. NLPQL is the implementation of a SQP(sequential quadratic programming) algorithm. SQP is a standard method, based on the use of a gradient of objective functions and constraints to solve a non-linear optimization problem. A characteristic of the NLPQL is that it stops as soon as it finds a local minimum. Thus, the simulation results may be highly dependent on the starting point which user give to the algorithm. In this paper, we carried out optimization design of the check valve with NLPQL algorithm.

• Journal of Fashion Business
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• v.12 no.3
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• pp.16-30
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• 2008

The purpose of this study is to inquire into the necessity and problem of the study on beauty aesthetics, and the direction and method of its study theoretically by applying the concept of aesthetics to the beauty art as an attempt to build up aesthetic concepts of beauty art. As results of inquiry, the study on beauty aesthetics is essential for the adaptation to demands for the creativity of beauty art. As for problem of study on beauty aesthetics, it is necessary to conduct an aggregate study at various angles since the aesthetic value of beauty art (hairstyle) is realized by interaction of the social cultural value or practical value and pure artistic value, and the unique cosmetic beauty of any era or nation group individual is created on the basis of hair designers and individual spirit, emotion and taste, etc. and its perceptual aesthetic enjoyment is accomplished variously. As for the direction and method of study on beauty aesthetics, the quest with abstract speculative self-examination into the beauty having its subjective meaning must be accomplished. This thesis would like to contribute to the building up of beauty industry field as beauty arts based on the aesthetics by successive coming forward of personnel for beauty who combine the aesthetic abilities meeting the diversified requirements of modern society and by improving the recognition of persons recognizing the beauty industry field as a technical field only.

• The Journal of Economics, Marketing and Management
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• v.6 no.1
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• pp.1-8
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• 2018

Purpose - Local social commerce market has grown up remarkably. And, Coupang has shown new delivery strategy of rocket delivery. Making new paradigm at local market, Coupang has expanded market scale. This study investigated state of local social commerce market, weight and promotion strategy of Coupang market to find out competitiveness edge of Coupang. Research design, data, and methodology - The study investigated state and concept of social commerce to find out state, problems and competitiveness of social commerce. New distribution service was short of precedent studies. Statistical analysis and experimental analysis were not used, and interview was done to investigate three of social commerce businesses. Results - CRM construction is insufficient to have poor system, Local delivery system could not be made enough at overnight delivery and customers were dissatisfied with ties with another company. Promotion shall be done by delivery system for increase of profitability, funding for more investment, chatbot to build new customer control system, and new delivery system to produce profit. Conclusions - Coupang and others have grown up rapidly to worsen profit and to jeopardize survival. Excessive initial investment has threatened the businesses, for instance, low sales of Amazon, excessive expenses, bench marking of logistics system, and others.

• Archives of design research
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• v.16 no.4
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• pp.433-442
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• 2003

The concept of pun was basically used to get rhetorical effect in verbal usage and it can be easily applicable to visual communication design. By substituting symbolic images for words of verbal expression, we can draw out some effective communication methods in forms of pun. For years, visual puns have been useful concept to convey a visual message from ancient hieroglyphics to modern arts and design. There are essentially three categories of visual puns. Literal pun upholds the primary meanings of the message literally by picking up a key symbol to create two or more meanings, meanwhile suggestive pun is created when one symbol is used as a key symbol or two or more symbols are combined to created one key symbol that can suggest and strengthen meanings. Comparative pun can be defined two or more symbols of nearly the same appearance are combined or juxtaposed two or more times to enhance overall statement. The concept of visual pun used for traditional area can also be effective ways of new media communication. Thus it is natural to see the concept of visual puns in website. How to handle the images in website is the most critical point for differentiation. But recently, web site designers just seem to focus on somewhat functional aspect. There are certain types of web design formats, and many designers are tend to follow these routines unconsciously. In this situation, the new aspect of visual puns for web design can be a possible design method to fortify the overall message. Through this concept, we can build up some clear identity compared to other web sites and can get alternatives to perform more effective communication ways as a problem-solving process.

• Journal of the Korean Society of Costume
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• v.65 no.1
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• pp.89-103
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• 2015

The purpose of this study is to design fashion-cultural products by reviewing the symbolism in Changseung and Sotdae, which are folk belief sculptures. This study was performed by literature reviews of Changseung and Sotdae in order to look into the characteristics of folk belief and traditional culture, and the designs were developed from the symbolism extracted from Changseung and Sotdae with photoshop CS5 and illustrator CS5. The Symbolism of Changseung and Sotdae were as follows: First, Changseung and Sotdae express the 'symbiotic world view' that human beings need to devote one's life to nature. Second, original materials were saved in order to achieve the 'pursuit of essence'. Third, 'simple esthetic expression' was symbolized through the undivided condition between art, religion and life. And fourth, 'empathic humor' was seen through the basis of emotional sense of affinity. The first concept of design development was 'Pursuit of Essence', which was inspired by the characteristics of 'symbiotic world view' and 'pursuit of essence'. Changseungs were expressed as simple and abstract, and Sotdaes as simplified and modern by symmetrical and rotating copy. The second concept, 'Touch of Humor' was inspired by 'simple esthetic expression' and 'emphatic humor'. The face of Changseungs was exaggerated in a humorous ways and Sotdae was developed as sub-motives. The items for the fashion-cultural design were T-shirts, bags, and scarves. Total of 24 items were developed with 4 differently styled designs for each concept. This study was based on basic culture and attempted to diversify the traditional culture items. It hopes to raise the value of traditional culture, and furthermore help build up national competitiveness.

• Journal of Educational Research in Mathematics
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• v.26 no.3
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• pp.333-354
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• 2016

The aim of the present study is twofold. One is to confirm a hypothesis that a student's rate concept influences her conceiving change of a function in the view of rate of change and the other is to build up foundations for understanding the transition process from her rate concept to the concept of rate of change when she investigates the change of concentration as an intensive quantity. We explored how three participating high school students recognized and expressed change of given functions by using their rate concept as a conceptual tool. The result indicates that a change in students' rate concept might have an effect on understanding how function values change in term of rate of change. We also expect that it could be a catalyst for further research for clarifying the relationship between students' rate concept and their development of a concept of rate of change as a foundation for learning calculus.