• 제목/요약/키워드: Present Utilization

검색결과 1,447건 처리시간 0.023초

Establishing Required LOD and Positioning Accuracy for Indoor Spatial Information Applications in Public Administrative Works

  • Park, Junho;Lee, Jiyeong
    • 한국측량학회지
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    • 제35권2호
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    • pp.103-112
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    • 2017
  • Due to the large size and high complexity of modern buildings, the interest and the studies about indoor spatial information are increasing. Previous studies related to indoor spatial information were mostly about relevant technologies, and the application of indoor spatial information has been less studied. In the present study, the public administrative work areas where indoor spatial information may be applied were identified by using a modified delphi technique. And the indoor LOD (Level of Detail) and indoor positioning accuracy for indoor spatial information applications considering user requirements was established as standards for efficiently establishing and providing services. The required LOD and positioning accuracy for services was established by reestablishing indoor LOD and positioning accuracy and classifying services with reference to those. The indoor LOD was reestablished from LOD 0 to 4 by focusing on service utilization and general recognition, and the positioning accuracy was reestablished in three levels by considering the accuracy of the present positioning technology and service utilization status.

송전선로의 이용률 평가 및 합리적 운영에 관한 연구 (A Study on Utilization Ratio and Operation of Transmission Lines)

  • 김동민;배인수;조종만;김진오
    • 대한전기학회논문지:전력기술부문A
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    • 제55권10호
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    • pp.426-432
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    • 2006
  • This paper describes the concepts of Static Line Rating (SLR) and Dynamic Line Rating (DLR) and the computational methods to demonstrate them. Calculation of the line capacity needs the heat balance equation which is also used for computing the reduced tension in terms of line aging. SLR is calculated with the data from the worst condition of weather throughout the year. Even now, the utilization ratio is obtained from this SLR data in Korea. DLR is the improved method compared to SLR. A process for DLR reveals not only improved line ratings but also more accurate allowed line ratings based on line aging and real time conditions of weather. In order to reflect overhead transmission line aging in DLR, this paper proposes the method that considers the amount of decreased tension since the lines have been installed. Therefore, the continuous allowed temperature for remaining life time is newly acquired. In order to forecast DLR, this paper uses weather forecast models, and applies the concept of Thermal Overload Risk Probability (TORP). Then, the new concept of Dynamic Utilization Ratio (DUR) is defined, replacing Static Utilization Ratio (SUR). For the case study, the two main transmission lines which are responsible for the north bound power flow in the Seoul metropolitan area are chosen for computing line rating and utilization ratio. And then line rating and utilization ratio are analyzed for each transmission line, so that comparison of the present and estimated utilization ratios becomes available. Finally, this paper proves the validity of predictive DUR as the objective index, with simulations of emergency state caused by system outages, overload and so on.

Schisandrae Fructus: A Potential Candidate Functional Food Against Muscle Atrophy and Osteoarthritis Prevention

  • Lee, Seung Young;Jin, Hyun Mi;Ryu, Byung-Gon;Jung, Ji Young;Kang, Hye Kyeong;Choi, Hee Won;Choi, Kyung Min;Jeong, Jin Woo
    • 한국자원식물학회:학술대회논문집
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    • 한국자원식물학회 2018년도 춘계학술발표회
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    • pp.8-8
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    • 2018
  • Muscle atrophy, known as a sarcopenia, is defined as a loss of muscle mass resulting from a reduction in muscle fiber area or density due to a decrease in muscle protein synthesis and an increase in protein breakdown. Many conditions are associated with muscle atrophy, such as aging, denervation, disuse, starvation, severe injury and inflammation, prolonged bed rest, glucocorticoid treatment, sepsis, cancer, and other cachectic diseases. On the other hand, osteoarthritis (OA) is the most common form of joint disease and is wide spread in the elderly population and is characterized by erosion of articular cartilage, osteophyte formation, and subchondral bone sclerosis. The cytokine network plays an important role in the development and progression of OA with the inflammatory cytokine. Schisandrae Fructus (SF) derived from the ripe fruit of Schisandra chinensis (Turcz.) Baill. (Magnoliaceae) has been extensively used in traditional herbal medicines in Asia. It was originally used as a tonic and has been traditionally used for the treatment of many uncomfortable symptoms, such as cough, dyspnea, dysentery, insomnia, and amnesia for a long time. Previous reports have shown that SF and its related compounds possess various biological activities such as antioxidant, anti-inflammatory, anticancer, anti-microbial, antiseptic, anti-aging, hepatoprotective and immunostimulating effects. However, the therapeutic effects of SF on muscle atrophy and OA has not yet been evaluated. In the present study, we aimed to determine whether extracts of SF, the dried fruit of S. chinensis, mitigates the development of muscle atrophy and OA.

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총설: 콘크리트 및 모르타르를 위한 석탄 바텀애시의 활용 (Review: Utilization of Coal Bottom Ash for Concrete and Mortar)

  • 김형기
    • 한국건설순환자원학회논문집
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    • 제8권3호
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    • pp.333-348
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    • 2020
  • 본 총설에서는 석탄 바텀애시의 콘크리트 활용에 대한 최신의 전반적 내용을 다룬다. 최근 사용되는 두 종류의 화력발전시스템, 즉 미분탄연소와 순환유동층연소 보일러 각각으로부터 배출되는 바텀애시의 생산 과정과 물리적, 화학적 특성에 대해 분석하고, 활용 방법 및 활용을 위한 전처리 혹은 활용 대상 콘크리트의 종류에 대해 정리 하였다. 또한 바텀애시가 콘크리트의 여러 특성, 즉 유동성, 강도, 내구성에 미치는 영향에 대해 알아보았다. 그리고 바텀애시를 혼입한 콘크리트의 환경성 및 경제성에 대해 분석하였으며, 이를 통해 바텀애시의 콘크리트 내 활용의 미래를 고찰해 보았다. 바텀애시가 콘크리트 및 모르타르의 성능에 미치는 영향은 그 자체의 성능 외에도 전처리 및 가공 여부에 의해 크게 영향을 받는다. 따라서, 이 분야의 활용을 늘리기 위해서는 기술적 측면에서 분쇄 등의 약간의 물리적 가공이 필요하며, 이와 관련된 시방 및 기준의 정비가 요구된다는 것을 확인하였다. 특히 정책적 측면에서의 경제적 지원이 가능하다면 바텀애시 활용을 크게 확대할 수 있을 것으로 예상된다.

Scratching Stimuli of Mycelia Influence Fruiting Body Production and ROS-Scavenging Gene Expression of Cordyceps militaris

  • Liu, Gui-Qing;Qiu, Xue-Hong;Cao, Li;Han, Ri-Chou
    • Mycobiology
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    • 제46권4호
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    • pp.382-387
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    • 2018
  • The entomopathogenic fungus Cordyceps militaris is a valuable medicinal ascomycete, which degenerates frequently during subsequent culture. To avoid economic losses during industrialized production, scratching stimuli of mycelia was introduced to improve the fruiting body production. The present results indicated that higher yields and biological efficiency were obtained from two degenerate strains (YN1-14 and YN2-7) but not from g38 (an insertional mutant in Rhf1 gene with higher yields and shorter growth periods). Furthermore, the growth periods of the fruiting bodies were at least 5 days earlier when the mycelia were scratched before stromata differentiation. Three ROS-scavenging genes including Cu/Zn superoxide dismutase (CmSod1), Glutathione peroxidase (CmGpx), and Catalase A (CmCat A) were isolated and their expression profiles against scratching were determined in degenerate strain YN1-14 and mutant strain g38. At day 5 after scratching, the expression level of CmGpx significantly decreased for strain g38, but that of CmSod1 significantly increased for YN1-14. These results indicated that scratching is an effective way to promote fruiting body production of degenerate strain, which may be related at least with Rhf1 and active oxygen scavenging genes.

Developoment of Cement Use Manufacturing Processes and Product Qualities

  • Idorn G.M.
    • 시멘트 심포지엄
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    • 5호
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    • pp.17-36
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    • 1977
  • Features of past and present development of concrete technology and uses in Denmark will be mentioned to exemplify the general trend showing that industrial processing and product development is about to improve the utilization of cement considerably, com

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패밀리레스토랑 서비스의 기대불일치가 고객만족도에 미치는 영향에 관한 연구 (The Study for the Effect of Family Restaurant Service's Gap on Customer Satisfaction)

  • 김광수;김용완
    • 한국관광식음료학회지:관광식음료경영연구
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    • 제17권2호
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    • pp.1-26
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    • 2006
  • The life of modern society is going to be more scientific and rationalized. According to these trends, our dietary life was also dramatically changed. Family restaurants grew up by 30% every year was became the place of meeting and relaxation from the place of selling and eating. These demands request to improve an atmosphere, a facility and a service in family restaurants. The objective of the present study is to investigate the effect of the gap of service in family restaurant on customer loyalty based on Oliver's gap theory. These results could be contributed to make the strategy of marketing in family restaurants. The purpose of this study in detail is as below. First, it is determined the difference of its expectation and its outcome regarding on the family restaurant service. Second, it is investigated the relationship of the gap of family restaurant with customer satisfaction. The suggestions of the present study are as below. First, it is necessary to get a novel CI strategy to clean the environment of restaurant and to induce the customer desires for young females as a dominant customers. Second, it is need to improve the interior of restaurant and to develop foods for optimal dietary environments. Third, based on the customer loyalty of the present study, customer satisfaction belongs to optimal dietary environment and utilization, whereas the negative gap of service is commercial dietary goods and employee's service. Therefore, the continuous loyalty along with personal satisfaction intends to improve the maximized atmosphere and utilization on use. The main strategy of marketing could be focused on the improvement of commercial dietary goods and utilization for the satisfaction and demands of customers.

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세계 지열에너지 활용 현황 및 전망 (Status and Outlook of World Geothermal Energy Utilization)

  • 송윤호
    • 한국신재생에너지학회:학술대회논문집
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    • 한국신재생에너지학회 2005년도 춘계학술대회
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    • pp.669-673
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    • 2005
  • World geothermal resources potential is estimated to supply 189 EJ annually, which can take charge approximately a half of annual world energy consumpt ion, from considering identified resources and supplies in USA and Iceland. Present annual use of geothermal energy, on the other hand, is only $0.1\%$ of its potential, but still has $70\%$ share among total new renewables. World-wide installed capacity of geothermal power generation reaches 8,900 MWe and 27,825 MWt for direct uses in 2005 which is almost two-fold increase over 2000. This increase is mainly due to exploding expansion of geothermal heat pump utilization: USA and western European countries lead these trends. Although geothermal heat pump distribution in Korea is still in its starting phase, comparing to Swiss achievement in terms of areal utilization sense, we expect to come up with national supply of over 600,000 toe in near future.

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근대건축 중명전(重明殿)의 실내공간 활용방안에 관한 연구 (A Study of interior Utilization Plan of Modern Architecture Jongmyongjeon)

  • 한지연;오인욱
    • 한국실내디자인학회:학술대회논문집
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    • 한국실내디자인학회 2006년도 춘계학술발표대회 논문집
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    • pp.140-144
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    • 2006
  • Modern architecture after enlightenment period of Korea has been defamed indifferently before preparing devices for preservation. Many modern architecture has been underestimated by the feeling of being cultural victimized for Japan and economic logic. Other advanced countries make laws for their historic heritage with a concept for past-present-future. Also they re-create their cultural heritage to help their local economic. As the Registration System is established at july 2001, we have to find organic, positive interior space utilization methods about modern architecture. Modern architecture is private property in real using but it has historic trace. Therefore, modern architecture can be affirmative social property because it is a base of historic, cultural circumstances for local identity. The purpose of this study is to construct preservation and utilization methods of interior space for modern architecture.

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