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A Decision-Making Model for Shortening Construction Period through Concurrent Engineering (동시공학을 통한 공기단축 의사결정 모델)

  • Choi, Do-Seung;Lee, Jae-Seob
    • Korean Journal of Construction Engineering and Management
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    • v.8 no.6
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    • pp.197-206
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    • 2007
  • The age of synthetic correspondence against "development period shortening, high quality" is about to come. While the product is becoming complexation gradually and also diversification, life cycle of product gets shorted. Under the infinity competition age, the certain answer of "the survival of the fittest" is that the enterprise itself must be able to shorten development and delivery term, reduce product development and life cycle cost, and satisfy customer in performance and value. From this point of view, concurrent engineering's theory, which develops the process of product in the manner of repetition, parallel, and synchronousness, is realized as a important strategy instrument in construction. This study investigates and analyzes several examples in order to apply concurrent engineering successfully, and presents the decision-making model through the simulation about the factor affecting in each process.

An Analysis of the Importance of the Risk Factors Influencing the Calculation of the Subcontract Construction Bidding Cost (건설공사 하도급 입찰단가 산정에 영향을 미치는 리스크 요인의 중요도 분석)

  • Lee, Sung-Goo;Park, Tae-Keun
    • Korean Journal of Construction Engineering and Management
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    • v.8 no.2
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    • pp.109-117
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    • 2007
  • The construction environment has the trend of oversizing and professionalizing, the increase of the construction period, and the risk factors and the uncertain factors which are important in the construction bid. The misunderstanding and the lack of knowledge of the subcontractor result in the decrease of the profit or the deficit. In conclusion, these are supposed to give the financial burden to the subcontractor. So, it is very important to predict the construction preparation cost calculation by the risk factors in the bidding stage and to calculate the bid unit cost considering the target profit of the subcontractor in the process of the mutual agreement and performance of the contract. In these points of view, this study analyzes how the importance of the risks influencing the bidding cost calculation affect the construction cost, and this analysis can be used as the basic data to establish the suitable bid strategy of the subcontractor.

Study of Growth Disturbance and Endocrine, in the view of Oriental Medicine (소아 성장장애와 내분비에 대한 한의학적 고찰)

  • Jun Chan-Il
    • The Journal of Pediatrics of Korean Medicine
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    • v.15 no.1
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    • pp.105-115
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    • 2001
  • The relation of endocrine in the western medicine and zangfu-organ functions in Korean medicine, related to growth disturbance, was studied and derived the following results. 1. The hormone most related to growth disturbance is, directly secreted from the anterior pituitary or is stimulated and secreted in the target grands, growth hormone, thyroid, adrenocortical hormone, gonadial hormone and is insulin secreted from $\beta$ cell of langerhans' slands of pancreas. 2. the pituitary has the most close relation with the kidney in the five zang-organ. Because the kidney is innate origin(先天之本) and promotes qi and blood(生化氣血), stores the essence of life(藏精), dominates the bones(主骨) and promotes the marrow(生骨髓). Especially it is connected with brain(通於腦). 3. In the children growth, the endocrine action in the pituitary has the most close relation with the kidney, As in the reports of the brain and spinal cord, bone, store essence of life, sexual maturation and decline(kidney-qi, sexual functions of both sexes(天癸)) etc, and cause of cretinism, dwarf in the main subject. 4. Somatomedin is the most important factor of the growth factors, IGF in another word. The unification of IGF and secretion is controlled firstly according to growth hormone, however is very closely related to the nutrition status in the non-hormonic causes. Also, it is affected very much by the insulin. 5. Insulin is one of the important hormone related to the growth and is secreted from the pancreas. Pancreas belongs to the functional system of spleen in oriental medicine, thus the growth disturbance, occurred due to error in insulin secretion and nutrition(in another words, the lack of postnatal essential substance from food-stuff(水穀精氣)), is closely related to the spleen. 6. From the results driven above, the hormone action of endocrine and problem in secretion, related to the growth disturbance, must be focused on the differentiation of symptoms and signs of the kidney and the spleen in oriental medicine.

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RDB-based XML Access Control Model with XML Tree Levels (XML 트리 레벨을 고려한 관계형 데이터베이스 기반의 XML 접근 제어 모델)

  • Kim, Jin-Hyung;Jeong, Dong-Won;Baik, Doo-Kwon
    • Journal of Digital Contents Society
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    • v.10 no.1
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    • pp.129-145
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    • 2009
  • As the secure distribution and sharing of information over the World Wide Web becomes increasingly important, the needs for flexible and efficient support of access control systems naturally arise. Since the eXtensible Markup Language (XML) is emerging as the de-facto standard format of the Internet era for storing and exchanging information, there have been recently, many proposals to extend the XML model to incorporate security aspects. To the lesser or greater extent, however, such proposals neglect the fact that the data for XML documents will most likely reside in relational databases, and consequently do not utilize various security models proposed for and implemented in relational databases. In this paper, we take a rather different approach. We explore how to support security models for XML documents by leveraging on techniques developed for relational databases considering object perspective. More specifically, in our approach, (1) Users make XML queries against the given XML view/schema, (2) Access controls for XML data are specified in the relational database, (3) Data are stored in relational databases, (4) Security check and query evaluation are also done in relational databases, and (5) Controlling access control is executed considering XML tree levels

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Anti-decoration Culture in Contenaporary Japanese Fashion (현대 일본 패션에 내재한 반꾸밈 미학)

  • Chae Keum-Seok
    • Journal of the Korean Society of Costume
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    • v.54 no.8
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    • pp.129-146
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    • 2004
  • The Purpose of this study is to search the characteristics of aesthetic sense from the spiritual root of anti-decoration culture in contemporary Japanese fashion and find the aesthetic meanings inside contemporary Japanese fashion. This study considered contemporary Japanese fashion design from 1970 to 2000 to figure out the anti-decoration culture in contemporary Japanese fashion. The contents of this study are 1. surveying the historical change about the aesthetic sense of Japanese anti-decoration culture. 2. deducing the distinctive aesthetic ideology from the anti-decoration culture 3. finding aesthetically the inside meaning of anti-decoration culture in contemporary Japanese fashion. The conclusion on this study is as the followings. Anti-decoration culture has three aesthetic ideology. First, faintful aesthetics implies the aesthetic ideologies of Wabi, Sabi from Heian period and it appears the aesthetic sense to be natural beauty. simplicity, minimalism and temperance. Second, ambivalence aesthetics is based on nothingness and has the characteristic of multivocal and variableness without biased view. Third. playful aesthetics has the meaning of humorous. witty and mischievous which is the basic factor of Japanese formative arts. The aesthetic range of this study are the beauty of simplicity. poverty, incompletion, vagueness and humor. First, beauty of simplicity is composed of minimal lines and area through strict temperance and elimination. Second, beauty of poverty came from the aesthetic concept of Wabi which means honorable poverty and plainness. Third, beauty of incompletion means emptiness which is within the range of possibility. Forth, beauty of vagueness could be explained as incorporeal, colorlessness and voiceless. Fifth, Okashi which was the middle ages in Japan, shows the vein of humor in anti-decoration culture. As a result, anti-decoration culture does not mean the opposite of decoration culture, but accomplishes extreme artificial beauty by strict temperance and elimination. Also it is concerned as intentional poverty of decorative effect.

Coarse grained Simulation Model for Web Application Performance Analysis (웹 애플리케이션 성능 분석을 위한 대략적 시뮬레이션 모델)

  • Kim, Yong-Soo
    • Journal of the Korea Society of Computer and Information
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    • v.13 no.6
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    • pp.25-31
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    • 2008
  • The web has been evolving as an indispensable part of our lives since Berners Lee introduced the first web sever and browser in 1990. From the web end user's point of view, the response time is a matter of concern. Moreover the throughput is an important factor to consider for the system manager's point as well. It's not easy to estimate the performance of a web application because it depends on various elements comprising the whole operational environment of the Internet from networking, client and server computing powers, DBMS and OS capabilities, to application itself. This paper suggests a coarse grained simulation model for web application performance estimation based on the data measured by Buch and Pentkowski [1] and the analytical model proposed by Gunther [2]. The result of the simulation model almost coincides with the measured data and estimates the performance of a new environment.

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A Conceptual Analysis of Household Migration Decisions (가구의 이동결정에 관한 개념적고찰)

  • 김헌민
    • Korea journal of population studies
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    • v.14 no.1
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    • pp.26-34
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    • 1991
  • Migration studies that assume that decision making is done on an individual basis is overlooking the importance of the family factor. Considering that must people belong to families, it is more appropriate to view migration decision from the perspective of the family. This study analyzes the household migration decision whereby the alternatives are to stay, 10 undertake family migration or to undertake single migration of a member. In developing a conceptual model of household migration decision, it is assumed that the household's objective is to maximize household income which is a function of individual members' earnings. The benefits and costs of household migration and individual migration are identified and the household chooses the migration strategy that maximizes expected household income. When household members have conflicting earning prospects in the potential destination, the household considers single migration of the member with the best earning potentials. However, lone migration by a household member involves cost of family separation which is both monetary and psychic, and this study shows that lone migration is undertaken only when its net gains to the family are greater than the separation cost of the family. The major benefit of choosing single migration is the retention of home base in the place of origin which can serve as an insurance against the uncertainty of obtaining a job in the destination, the benefit that is unavailable in family migration. The conceptual analysis shows how a household's migration decision would depend on its members' economic roles and prospects in the destination. Besides the economic variables, social and life cycle variables of the family translate into separation costs and benefits of migration. This study indicates that one - earner family in low economic status but with good earning prospects and high separation costs is more likely to choose family migration over single migration.

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Factors Affecting Corporations Practice of Supply Chain Management: With a Focus on Information Sharing and Performances (기업의 공급사슬관리실행의 영향요인: 정보공유와 성과를 중심으로)

  • Na, Sang-Gyun;Wang, Jian-Xin
    • Journal of the Korea Safety Management & Science
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    • v.14 no.3
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    • pp.193-205
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    • 2012
  • Since manufacturing and supplying corporations today come to view their practice of SCM as important, it becomes essential to analyze and control the structural relationship between the information sharing among corporations and the performances resulting from their practice of SCM. It is thus the purpose of this paper to examine the factors that may prompt corporations to implement SCM by means of analyses into the relationship between information sharing and practice of SCM which corporations should lay stress on as well as the relationship between financial and non-financial performances of corporations. The findings of the study can be summed up as follows: First, as for the relationship between information sharing among and practice of SCM by corporations, information sharing among corporations turned out to affect such factors of implementing their SCM as trust, commitment mutual dependence. Consequently, corporations are requested to endeavor to implement SCM itself faithfully if they really aim to achieve their performances by practice of SCM and, at the same time, to make efforts to obtain understanding and support for information sharing among themselves. Second, from the analysis of the relationship between SCM and financial as well as non-financial performances of corporations, it was found that trust, a factor of SCM practice, had influence upon non-financial performances of corporations, but not upon their financial performances, while commitment and mutual dependence affected both financial and non-financial achievements of corporations. Therefore, it was made clear from the analysis that the decision and systematic control of SCM activities which best suit to a corporation play an important role in improving its financial and non-financial performances, because they greatly depend on the implementing extent of SCM factors such as trust, commitment and mutual dependence among corporations.

Recognition Difference of Local Residents and Tourists to Urban Park Operation and Management - With a Special Reference to the Wolmi Park in Incheon - (도시공원의 운영 및 관리에 대한 지역주민과 관광객 간 인식 차이 연구 - 인천광역시 월미공원을 중심으로 -)

  • Kim, Jin-Tak;Cho, Joong-Hyun
    • Korean Journal of Environment and Ecology
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    • v.25 no.3
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    • pp.432-441
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    • 2011
  • This study attempted to investigate and analyze the difference of recognition between local residents and tourists, with the parks where tourists visit much and tried to make promotion of park utilization and available way of park management. Data were collected from 222 visitors in Wolmi park from May 1 to May 4, 2009 through field questionnaire. The results of this research were as follows. First, the local residents and tourist showed the difference in terms of use of parks. For the additional facilities, the local residents and tourists had different point view. While local residents responded that the supplementation of relaxation facilities, was the most important, the tourists selected the sign board providing the information about the parks as the most important factor. Secondly, in accordance with the awareness survey on the tourist spots for the spatial link between Wolmi Park and other areas, the local residents and the tourists demonstrated the difference in the satisfaction on Wolmi-Do tourist spot and what to improve.

21st Century Visual Culture and Visual Lesson (21세기의 영상문화와 시각적 교훈)

  • Park, Yoon-Sung;Kim, Hye-Sung
    • Journal of Digital Contents Society
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    • v.7 no.3
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    • pp.153-160
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    • 2006
  • It is not too much to say that invention of image divided the 19th and 20th century. Rapidly developed, produced and played images have a stronger effect on human beings and society. Today, images have an influence on forming interpersonal relationships by means of consciousness and ideas of new dimension, creating new image relationship different from verbal relationship between people. Especially moving image(image) is unlike other images, an image has unique psychological characteristics of its on. An image stimulates all the five human senses as well as sight, is easer to access and perceive than other media, and unable to control image development passively in general but get absorbed unconsciously very quickly. On 21th century As we are exposed to image whether consciously or unconsciously everyday, consideration on current times driving human beings and social relationship in an abnormal way is needed. Furthermore, new view of image study suggest to new relation of image that is a key factor to recover humanity and functions of society.

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