• Title/Summary/Keyword: Theory U

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Heating Power Consumption Comparison Study Between Static Insulation and Dynamic Insulation at KIER Twin Test Cell (동적 단열재를 적용한 건물에서의 에너지소비량 비교 분석)

  • Kang, Eun-Chul;Park, Yong-Dai;Lee, Euy-Joon;Yun, Tae-Kwon
    • Proceedings of the SAREK Conference
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    • 2008.06a
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    • pp.919-924
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    • 2008
  • Power consumption in the building thermal load could be the sum of the building fabric conduction load, building ventilation convection load and other such as radiation loss load. Dynamic Breathing Building (DBB) is the state-of-the-art to improve the wall insulation and indoor air quality(IAQ) performance as making air flow through the wall. This heat recovery type DBB contributes the power consumption saving due to the improved dynamic U-value. KIER twin test cell with static insulation(SI) and dynamic insulation(DI) at KIER was developed to test building power consumption at the real outside conditions. Then, the actual results were compared with the theory to predict the power consumption at the KIER twin test cell and introduced the building new radiation loss factor $\alpha$ to explain the difference between the both the theory and the actual case. As the results, the power consumption at the breathing DI wall building could saved 10.8% at the 2ACH(Air change per hour) compared with conventional insulation. The building radiation loss factor $\alpha$ for this test condition to calibrate the actual test was 0.55 in the test condition.

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A Methodology of Optimal Technology Combination Selection for Developing a Specific Ubiquitous Smart Space (특정 유비쿼터스 지능공간 구축을 위한 기술조합에 대한 최적 선정 방법론)

  • Lee, Yon-Nim;Kwon, Oh-Byung
    • Journal of Intelligence and Information Systems
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    • v.14 no.3
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    • pp.109-131
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    • 2008
  • Ubiquitous Smart Space(USS) like u-City has been expected to create a high added value. However, developing USS has a high risk because it should use future technologies and development methodologies that have been never tried in the past. Hence, it has to be considered thoroughly in the very first stage of development. Moreover, USS usually uses several ubiquitous computing technologies combinationally because of the nature of USS. Despite of this, existing technology selection methodologies or technology evaluation methodologies only focus on a single technology. This leads us to develop a methodology of optimal technology combination for developing a specific USS. The purpose of this paper is to propose the methodology and to apply it to develop a real USS. We use portfolio theory and constraint satisfaction problem to determine an optimal technology combination. We also apply our methodology to the national ubiquitous computing project which carries out at present to validate it.

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A Study on the Nonlinear Relationship Between Volunteer Time Spending and Psychosocial Well-being in Old Life (노년기 자원봉사 시간과 심리사회적 안녕감의 관계 - 비선형성의 탐색 -)

  • Jung, Jin-Kyung
    • Korean Journal of Social Welfare
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    • v.63 no.1
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    • pp.137-158
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    • 2011
  • This study explore nonlinear relationship between volunteer time spending and psychosocial well-being among the old adults, on the ground of Socioemotional Selectivity Theory. This is secondary analysis using the 2009 National Old Aging Volunteer Survey data including 645 cases. The simple and multiple line graph method are implemented. As a result, this paper shows a nolinerar relationship which the low level of psychosocial well-being at non volunteer status is increasing to the paticular time spending, and then decreases after high level participation like U-shape. Male, over the 75 and not good health status has showed lower level of volunteer time spending. It can be founded that volunteering activity contributes to improve a psychosocial well-being in old life, but the desirable volunteer time spending is medial about 100-200 yearly not over the 700.

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The Role of Evaluative Language in News Translation : Focusing on Soft and Hard News

  • Ban, Hyun;Noh, Bokyung
    • International Journal of Advanced Culture Technology
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    • v.6 no.2
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    • pp.65-71
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    • 2018
  • In the digital era, news consumption is not confined in geological boundaries. Technological advances bring the instant dissemination of news into life and allow news audience to consume events that occur far away almost in real time. The transmission has blurred the boundary between traditional media and new media, and the one between physical and virtual world. That is, what if a journalist applies news framing to the news translation process? This paper aims to investigate the gap between the ST and the TT created when the source news texts undergo a translation process. To achieve this aim, the appraisal theory developed by White (2003) is employed to identify a difference between the ST and the TT. Furthermore, we have attempted to identify differences between soft news stories and hard news stories while the STs from both news stories are translated into the TTs. Two time-sensitive events, Hugh Grant's marriage and a U.S. and North Korea summit, were selected. The former (a soft news story) is extracted from the Telegraph and the latter (a hard news story) is from the Washington post. As a result, it was found that such strategies as attitude, engagement, and judgment were used when the source news texts from the hard news story are translated into the target news texts. Under the appraisal theory, the strategies involve evaluative language which refers to positive or negative language that judges the worth of entities. In general, it is said that a journalist frames the SS (especially from the hard news story) to convey his ideology to news consumers. Hypothetically, we assume that a similar framing process takes place in deriving the TT from the SS of the hard news story. Thus, we could conclude that the TT from the hard news story differs from the TT from the soft news story and that the difference can be explained within the framework of White's appraisal theory.

A Study on the Non-linear Relationship between Asymmetric Interdependence and Conflict (불균형적 상호의존성과 갈등간 비선형적 관계에 대한 연구)

  • Kim, Jong-Keun;Kim, Jae-Wook
    • Journal of Distribution Research
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    • v.10 no.2
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    • pp.49-72
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    • 2005
  • As interdependence and conflict are important to the understanding of channel interactions, many researchers have studied their relationship. Identifying the relationship between interdependence and conflict will help understanding an exchange relationship. In social science, the relationship between interdependence and conflict is explained by two contradictory theories, and there are also inconsistent results in marketing science. The authors suggest non-linear relations between asymmetric interdependence and conflict, based on bilateral deterrence theory and conflict spiral theory. Using survey data from industrial market, we demonstrate that there is an inverted U-shaped relationship between asymmetric interdependence and interfirm conflict. The result show, as the magnitude of interdependence is high. the hypothesis on the non-linear relationship between asymmetric interdependence and conflicts is acceptable on both suppliers and distributors. Finally, we discuss several theoretical implications and suggest limitations and future research issues.

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A comparative study on Humor theory and Sasang Constitutional Medicine from the viewpoint of science and technology history (과학기술사적 관점에서 바라본 4 체액설(體液說)과 사상의학(四象醫學) 이론 체계의 비교 연구)

  • Baek, Jin-Ung
    • Journal of Korean Medical classics
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    • v.25 no.3
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    • pp.13-22
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    • 2012
  • Objective : This study was conducted to compare Sasang Constitutional Medicine (SCM) and Four Humor Theory (FHT). Method : 1. The theoretical comparison was focused on the central pillars of both theories, i.e., the theories of Hippocrates and his successor Galenos as well as Lee Je-ma. 2. Research papers on SCM and FHT were collected as follows. First, relevant papers were searched for using several electronic databases: Pubmed (http://www.pubmed.org.), NDSL (http://www.ndsl.kr/index.do), KISS (http://kiss.ksstudy.com), and RISS (http://www.riss4u.net.). Keywords were 'Sasang', 'constitution', 'constitutional medicine', 'humor theory', 'Hippokrates', 'Galenos', and "Dongeuisusebowon".In addition, relevant papers were searched for using the websites of The Korean Society for the History of Medicine(http://medhist.kams.or.kr), The Korean society of Oriental medical classics (http://www.wonjeon.or.kr), The Society of Sasang Constitutional Medicine (http://www.esasang.or.kr/new_home/main.htm),and The Korean Association of Oriental Medical Physiology (http://www.ksomp.or.kr). As a result, a total of 32 papers were included in the final selection. Result & Conclusion : In this study, a comparison was made between FHT and SCM in terms of physiology, pathology and therapy. We showedthat the theories share similarities as well as differences. However, in a practical sense, the two should be characterized based on their differences rather than their similarities. In conclusion, the two have something in common, but overall, they are remarkably different from each other.

A Study on the Development of Education Programs Using Presidential Archives Based on the Multiple Intelligence Theory (대통령기록물을 활용한 다중지능이론 기반의 교육프로그램 개발)

  • Kim, Geon;Kim, Tae-Young;Bae, Sam-Yeol;Lee, Eun-Jin;Kim, Yong
    • Journal of Korean Society of Archives and Records Management
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    • v.13 no.3
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    • pp.99-125
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    • 2013
  • This study proposes an education program using presidential archives to develop the multiple intelligence of children and the youth based on the multiple intelligence theory and the resource-based learning theory. To accomplish this, we performed a literature review and interviews with an archivist working in the Presidential Archive in Korea. This study compared and analyzed the Presidential Archives' education programs between the U.S. and Korea. This study can be useful and valuable in developing education programs in two areas, with the first area being the fact that the proposed program could help learners improve academic abilities by developing multiple intelligence and the second area being the fact that the program could increase the awareness of the importance of presidential archives. With the proposed program, the utilization of presidential archives can be facilitated.

Consolidation Behaviour of Dredged Clay Ground Improved by Horizontal Drain Method (수평배수공법에 의해 개량된 준설점토지반의 압밀거동에 관한 연구)

  • 김형주;원명수
    • Geotechnical Engineering
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    • v.13 no.1
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    • pp.137-146
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    • 1997
  • In this study, a large consolidation test was carried out to estimate the consolidation behaviour of dredged clay ground improved by horizontal drain using plastic board drain with a vacuum pressure. The test results were analyzed by a numerical simulation using potential consolidation theory applied to a hollow cylinder. The rapid decreases in pore pressure and the drain speed in the plastic board indicate that the consolidation occurred quickly after the vacuum state was applied to the test soil. According to the numerical analysis obtained by applying the linear potential consolidation theory to a clay hollow cylinder with external radial drainage, the pore pressure is affected by the strain and the permeability of the soil rather than by the diffusion types. Therefore, measured surface settlement agreed with the numerical solution at the point where consolidation pressure increasing rate u: -0.5. Also the behaviour of the clay layer settlement in the place where the drain was installed was similar to that shown in Barron's consolidation theory. Finally, the design and construction procedure including the selection of the appropriate arrangement of horizontal drains were discussed based on the results of the laboratory tutsts. It is also shown that the potential consolidation theory make it possible to predict consolidation behaviour in the field using horizontal drains exactly.

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Impact of viscoelastic foundation on bending behavior of FG plate subjected to hygro-thermo-mechanical loads

  • Ismail M. Mudhaffar;Abdelbaki Chikh;Abdelouahed Tounsi;Mohammed A. Al-Osta;Mesfer M. Al-Zahrani;Salah U. Al-Dulaijan
    • Structural Engineering and Mechanics
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    • v.86 no.2
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    • pp.167-180
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    • 2023
  • This work applies a four-known quasi-3D shear deformation theory to investigate the bending behavior of a functionally graded plate resting on a viscoelastic foundation and subjected to hygro-thermo-mechanical loading. The theory utilizes a hyperbolic shape function to predict the transverse shear stress, and the transverse stretching effect of the plate is considered. The principle of virtual displacement is applied to obtain the governing differential equations, and the Navier method, which comprises an exponential term, is used to obtain the solution. Novel to the current study, the impact of the viscoelastic foundation model, which includes a time-dependent viscosity parameter in addition to Winkler's and Pasternak parameters, is carefully investigated. Numerical examples are presented to validate the theory. A parametric study is conducted to study the effect of the damping coefficient, the linear and nonlinear loadings, the power-law index, and the plate width-tothickness ratio on the plate bending response. The results show that the presence of the viscoelastic foundation causes an 18% decrease in the plate deflection and about a 10% increase in transverse shear stresses under both linear and nonlinear loading conditions. Additionally, nonlinear loading causes a one-and-a-half times increase in horizontal stresses and a nearly two-times increase in normal transverse stresses compared to linear loading. Based on the article's findings, it can be concluded that the viscosity effect plays a significant role in the bending response of plates in hygrothermal environments. Hence it shall be considered in the design.

Factors Influencing Acceptance of Hedonic Ubiquitous Services (헤도닉 유비쿼터스 서비스의 수용에 영향을 미치는 요인에 관한 연구)

  • Yoo, Ho-Sun;Kim, Min-Yong;Kwon, Oh-Byung
    • The Journal of Society for e-Business Studies
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    • v.17 no.1
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    • pp.1-21
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    • 2012
  • Conventional studies on technology acceptance have focused on information technology for utilitarian value and hence based on 'theory of reasoned action'. Correspondingly, the studies depend on perceived usefulness and perceived ease of use as rational decision making elements. However, in ubiquitous society, innovative technologies are applied to non-task area, as well as task-oriented area. Therefore, users are more influenced by affective factors than cognitive factors in causing their usage intention. In line with those discussions, we cannot make sure that the conventional technology acceptance model could fully explain the current u-service acceptance phenomenon. Hence, to overcome the limitations of the prior technology acceptance studies, we propose an amended TAM which includes one hedonic factor and two factors on ubiquitous computing technology : ubiquity and intelligence.