• 제목/요약/키워드: Alternative concept

검색결과 797건 처리시간 0.033초

프란시스 터어빈의 설계조건 변동에 따른 수력학적 특성해석 (Analysis of Hydraulics Power Characteristics According to Changable Design Conditions for Francis Turbines)

  • 김옥삼;최주석;김일수
    • 동력기계공학회지
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    • 제9권3호
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    • pp.39-43
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    • 2005
  • Among many other alternative energy resources, small scale hydropower has been brought into attention as a reliable source of energy today, which had been relatively neglected since 1960s. Present low head of Francis turbines and small scale hydroturbines, however, have limitations in the minimum required head and flow rate for efficient operation. This study attempts to develope the Francis turbine which is expected to run efficiently even in very low head and small flow rate, so that the limitations on the conventional small scale hydropower could alleviated and competition with other alternative energy sources in the changable design conditions could attained. The Francis turbine of a new concept was designed based on changable design conditions, hydrodynamics and theory of power transmission. The result of the study shows that two stages runner is more efficient, cheaper in construction, faster responding, and easier maintaining than single stage runner of Francis turbine

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비즈니스 세계에서의 대체 사무실의 전략적 활용 (The Strategic Application of Alternative Office in the Business Worlds)

  • 임외석
    • 한국컴퓨터정보학회논문지
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    • 제3권1호
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    • pp.161-180
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    • 1998
  • 21c의 정보화 산업사회는 서류중심의 물리적 작업공간을 근간으로 하는 현재와 같은 오피스 환경으로부터 탈피하여, 비물리적이면서 종이 없는 작업공간으로 오피스의 개념이 변화 될 것이다. 이를테면, SOHO, 가상 사무실, 전자 사무실, 디지털 작업실, 위성형 사무실, 호텔링, 원격 근무 등과 같은 '대체 사무실'의 등장이 바로 그러한 현상을 잘 나타내고 있는 것이다. 이 글은, 이러한 시각에서, 다양한 형태의 대체 사무실이 특히 비즈니스 세계에서 어떻게 활용되며, 그 전략적 가치(특성)는 어디에 있는가, 그리고, 비즈니스의 성과를 높이기 위해서는 어떠한 방향으로 설계˙구축해야 할 것인가에 대하여, 선진국의 몇몇 사례들을 통해서 살펴보았다.

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보완대체요법에 대한 간호사와 의사의 태도 비교 연구 (A Comparative Study of Nurses and Physicians' Attitudes about Complementary and Alternative Therapy)

  • 장은희;박경숙
    • 성인간호학회지
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    • 제15권3호
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    • pp.402-410
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    • 2003
  • Purpose: The purpose of this study was to develop a fundamental reference for the clinical implementation of Complementary and Alternative Therapy(CAT) by surveying and analyzing different perception and attitude between nurses and physicians. Method: A total of 167 nurses and 103 physicians from two C university health science centers participated in this survey, and SPSS program with version 10.0 was used to analyze the result of survey. Result: As results, 72.7% nurses and 57.1% physicians showed positive attitude for the concept of CAT, 60.6% nurses and 36.7% physicians responded positively while 2.6% nurses and 25.9% physicians responded negatively for the application of CAT to the clinical practice. There was a meaningful difference between two groups in the belief of therapeutic effectiveness of CAT. 67.7% nurses believed the therapeutic effectiveness of CAT while 38.8% physicians did. For attitudes of nurses and physicians toward CAT showed meaningful difference according to general characteristics: age, gender, marital status, a level of education, position in the organization, religion, and duration of health care service other than inpatient units. Conclusion: In this study, the attitudes of nurses and physicians about CAT showed meaningful difference that nurses were more positive than physicians in application.

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소갈병(消渴病) 기전(機轉)에 관한 이론의 변천 (The Transition of Theory on the Outbreak and Transmission of Wasting-Thirst)

  • 조선영;유원준;강연석
    • 한국의사학회지
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    • 제21권2호
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    • pp.95-113
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    • 2008
  • Unsatisfied with the modern medicine's treatment of diabetes, patients diagnosed with the disease turn to alternative medicine for treatment. A look at the percentage of people using alternative medicine marked 72.8% in the United States and more than 60% in Korea in 2006. The most preferred form of alternative medicine turned out to be usage of dietary supplements and herbal medicine. Most of the dietary supplements and herbs that diabetic patients use largely originated from their usage in East Asian Traditional Medicine. As Western Medicine made its way into East Asia in late 18th century, excessive efforts were made to translate Western medical terminology into traditional medical terminology equivalents. In the process of doing so, wasting-thirst became a concept equivalent to diabetes. Theories regarding the pathogenic outbreak and transmission of wasting-thirst has been supplemented and progressed according to needs and even showed new tendencies. Profound understanding of wasting-thirst achieved through historical research is expected to lead to proper application of wasting-thirst treatment methods in treating modern diabetes.

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멀비의 페미니즘 영화 이론으로 읽는 브라우닝의 극적 독백 (Browning's Dramatic Monologue and Mulvey's Feminist Film Theory)

  • 선희정
    • 영미문화
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    • 제17권2호
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    • pp.1-27
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    • 2017
  • My aim in this paper is to provide a clear view of Victorian gender ideology and highlight the role played by Browning's dramatic monologues in the challenge against the strict patriarchal codes of the era. Laura Mulvey's Male Gaze theory in cinema is especially useful for understanding Browning's most well-known dramatic monologues, "Porphyria's Lover," and "My Last Duchess," because these poems are structured by polarities of looking and being looked at, the active and the passive. In her 1975 essay "Visual Pleasure and Narrative Cinema", Mulvey introduced the second-wave feminist concept of "male gaze" as a feature of gender power asymmetry in film. To gaze implies more than to look at – it signifies a psychological relationship of power, in which the gazer is superior to the object of the gaze. She declares that in patriarchal society pleasure in looking has been split between active/male and passive/female. Browning's women are subject to the male gaze, but they refuse to become the objects of a scopophilic pleasure-in-looking. Porphyria and the Duchess don't exist in order to satisfy the desires and pleasures of men. They reveal themselves as an autonomous being - reserved in Victorian gender dynamics for men. Mulvey advocates 'an alternative cinema' which can challenges the male-dominated Hollywood ideology. It is possible to say that Browning's dramatic monologues correspond to Mulvey's 'alternative cinema' because they show a counterview in terms of the representation of woman against the Victorian patriarchal ideology.

영업사원의 이직의도 예측 모형 검증: 대안적 회사 매력도의 영향 (Testing the research model predicting the turnover intention among salespersons)

  • 전광호;장재윤
    • 한국조사연구학회:학술대회논문집
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    • 한국조사연구학회 2005년도 추계학술대회 발표논문집
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    • pp.221-245
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    • 2005
  • 영업사원의 이직의도 또는 행동을 설명하는 기존 연구들에서는 주로 역할스트레스를 유발하는 요인들과 직무관련 태도 및 성과변인들이 이직에 어떠한 영향을 미치는 지를 고찰해왔다. 본 연구는 이러한 기존 연구들에 대한 이해의 폭을 넓혀보고자 사회교환이론에서 제시하고 있는 대안적 회사 매력도라는 개념을 영업사원의 이직의도를 설명하는 연구모형에 새롭게 포함하였다. 생명보험업계에 종사하고 있는 영업사원들로부터 자료를 수집하여 분석한 결과, 이직의도에는 대안적 회사의 매력도가 직접적으로 정적인 영향을 미치는 것으로 나타났으며, 직무성과와 만족은 부적인 영향을 미치는 것으로 나타났다. 하지만 이직의도의 중요한 선행변수로서 밝혀져 왔던 조직몰입은 이직의도에 직접적인 영향을 미치지 못하는 것으로 나타났다. 마지막으로 역할모호성은 직무성과와 만족 모두에 부적인 영향을 미치고 있는 것으로 나타났지만, 역할갈등은 직무성과에만 부적인 영향을 미치는 것으로 나타났다.

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Capillary Hysteresis Model in Unsaturated Flow : State of the Art

  • Park, Chan-Kun;Sonu, Jun-Ho
    • Korean Journal of Hydrosciences
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    • 제4권
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    • pp.33-49
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    • 1993
  • The Purpose of this study is to classify existing hysteresis models and to discuss a possibility of a new type of the hysteresis model. The existing hysteresis models are classified into three types: the interpolation model, the scaling model and the domain model, of which only domain model is to simulate hysteresis curves based on the theoretical approach, It is useful to develop a hysteresis model that requires only one branch of hysteresis curves for the model calibration because obtaining hysteresis curves by experiments is expensive and time-concept by many investigators, however their models are not successful to accurately simulate real data of Rubicon Sandy Loam and Dune Sand. There is a possibility that a new model is based on the dependent domain concept considering the weighting factor, $P_a$($\theta$), which accounts for the pore blockage effect against air entry. Conclusively, a new model where the weighting factor $P_a$($\theta$) in Model III-1 (Mualem, 1984) reduces to a known variable through an appropriate method is an alternative model which required only one branch of main curves for the model calibration.

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시스템 사고로 분석한 RTE 주요성공요인 (RTE Critical Sucess Factors Analyzed by System Thinking)

  • 정재운;김현수;최형림;홍순구
    • 한국시스템다이내믹스연구
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    • 제7권2호
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    • pp.81-96
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    • 2006
  • Real-Time Enterprise concept comes out as an alternative to reduce the increasing uncertainty of the business environment recently. And lots of companies want to get Real-Time concept into their organizations. However, studies on RTE are not sufficient yet, from defining to realizing it. Thus, this study defines RTE activities with the RTE definition of Gartner and derives RTE critical success factors. During this study, system thinking is used to make interactions of RTE variables clear, and causal maps, generated by system thinking, are applied to derive CSF.

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The Multidimensional Structure of Gottfredson and Hirschi's Concept of Self-Control: An Empirical Analysis of the Grasmick et al.'s Operationalization.

  • Lee, Gang;Hollinger, Richard C.
    • 한국조사연구학회지:조사연구
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    • 제11권2호
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    • pp.123-140
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    • 2010
  • The purpose of this study is to determine the unidimensionality of Grasmick's operationalization of Gottfredson and Hirschi's criminality inducing the concept of low self-control. By applying confirmatory factor analysis procedures that incorporate advances in the application, the proposed six factor model and two alternative models were examined suggesting that Grasmick's low self-control scale actually contains 6 distinguishable factors, not a single factor. The factors identified to be consistent with the six-factor model were impulsivity, simple tasks, risk seeking, physical activities, self-centered, and temper.

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용접과 밀링을 이용한 쾌속조형법의 응용과 열변형 해석 (Application of Rapid prototyping for welding and milling, and Heat deformation for FEM)

  • 류연화;최우천;송용억;박세형;조정권;신승환
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2000년도 추계학술대회 논문집
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    • pp.339-343
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    • 2000
  • Rapid prototyping for welding and milling is a hybrid approach that makes use of welding as additive and conventional milling as subtractive technique. For two years this concept has been used to verify manufacturing mold and mechanical parts successfully. In latest new fabrication methods. For example, manufacturing mold for two sort of materials and shell fabrication, have been applied to the concept in KIST. This methods will be an alternative proposal in rapid prototyping. Metal deposition for welding causes the part to deform. It is a handicap in our proceeding. To overcome this problem, in this paper, we represent an optimal welding path for FEM analysis. Eight paths are tried to this and the value of deformation is average and standard deviation in four points'. Then we can compare with eight cases and select the optimal path.

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