• Title, Summary, Keyword: Reuse

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Analysis of Urban Water Cycle Considering Water Reuse Option (물재이용을 고려한 도시지역의 물순환 해석)

  • Lee, Ji-Ho;Pak, Ki-Jung;Yun, Jae-Young;Yoo, Chul-Sang
    • Proceedings of the Korea Water Resources Association Conference
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    • pp.1925-1928
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    • 2007
  • Water cycle analysis was performed for Gunja basin located in metropolitan Seoul using Aquacycle model in order to assess the problems of urban water cycle. From the water cycle analysis of Gunja basin, it was found that 75% of total rainfall occurred in the form of surface runoff, and groundwater recharge only accounted for about 7%. This suggests serious distortion of water cycle which can be attributed to urbanization. Feasibility analysis of reuse scenarios such as rainwater use and wastewater reuse was then performed to examine their influences on improving the water cycle. From the analysis of water reuse options, it was shown that imported water supply savings of 13% can be achieved through rainwater use, and water supply savings of 31% through wastewater reuse.

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A Comparison Study on Reinforcement Learning Method that Combines Supervised Knowledge (감독 지식을 융합하는 강화 학습 기법들에 대한 비교 연구)

  • Kim, S.W.;Chang, H.S.
    • Proceedings of the Korean Information Science Society Conference
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    • pp.303-308
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    • 2007
  • 최근에 제안된 감독 지식을 융합하는 강화 학습 기법인 potential-based RL 기법의 효용성은 이론적 최적 정책으로의 수렴성 보장으로 증명되었고, policy-reuse RL 기법의 우수성은 감독지식을 융합하지 않는 기존의 강화학습과 실험적인 비교를 통하여 증명되었지만, policy-reuse RL 기법을 potential-based RL 기법과 비교한 연구는 아직까지 제시된 바가 없었다. 본 논문에서는 potential-based RL 기법과 policy-reuse RL 기법의 실험적인 성능 비교를 통하여 기법이 policy-reuse RL 기법이 policy-reuse RL 기법에 비하여 더 빠르게 수렴한다는 것을 보이며, 또한 policy-reuse RL 기법의 성능은 재사용하는 정책의 optimality에 영향을 받는다는 것을 보인다.

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Investigation of Effluent of Wastewater Treatment Plants for Agriculture Reuse (하수처리수의 농업용수 재이용 활용자원조사)

  • Lee, Kwang-Ya;Kim, Hae-Do;Chung, Kwang-Kun
    • Proceedings of the Korea Water Resources Association Conference
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    • pp.1959-1963
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    • 2006
  • As an alternative water resources development, wastewater reuse for agricultural and instream uses are expected to be fond of the limelight. In order to find the feasible reuse system scheme for reclaimed water in real field, existing reuse sites were investigated for water quantity, quality, and irrigation scheme. From the results, most of sites supplied reclaimed water with a request of the users(farmers) and reuse techniques for agricultural use were to be needed in the sites which supplied over yearly $1.0{\times}10^6$ ton as agricultural water.

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An Effect of Medical Service Quality on Relationship Quality, Customer Satisfaction and Reuse Intent in Oriental Medical Hospital (한방병원 의료서비스품질이 관계품질, 고객만족, 재이용의도에 미치는 영향)

  • Cho, Chul-Ho
    • Korea Journal of Hospital Management
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    • v.15 no.2
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    • pp.107-128
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    • 2010
  • These days, customer satisfaction and relationship quality are regarded as important mediating factor in successful hospital management. Generally, service quality affects relationship quality, customer satisfaction and reuse intent in diverse service industries, and most of researchers agree to this conclusion. This study is designed to explore medical service quality in Oriental Medical Hospital and causal relationship among medical service quality, customer satisfaction, relationship quality and reuse intention. Through conclusion of this study, we could find that Oriental medical service quality factors are composed of medical staff, subsidiary facilities, medical facilities and administration service, and they affected relationship quality and reuse intent directly and indirectly through customer satisfaction. Moreover we found that customer satisfaction and relationship quality were playing an important role as connecting bridge between service quality and reuse intent.

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Backlog Factoring : Extension of Task Factoring for Reuse in Scrum Method (백로그 팩토링 : 스크럼 방법에서 재사용을 위한 태스크 팩토링의 확장)

  • Kim, Ji-Hong
    • Journal of Digital Convergence
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    • v.10 no.10
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    • pp.339-345
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    • 2012
  • Despite agile methods and software reuse being distinct approaches, there has been a growing amount of research on combining these approaches. Although Scrum is one of the most popular agile methods, reuse has not been actively supported. In this paper, we identify a new type of reusable Scrum assets, simplify the backlog process and propose a backlog factoring technique by extending task factoring to support reuse in the Scrum method. In addition, we can apply the proposed technique and show prototyping of backlog reuse in e-business applications.

CPLD Low Power Technology Mapping for Reuse Module Design under the Time Constraint (시간제약 조건하에서 재사용 모듈 설계를 통한 CPLD 저전력 기술 매핑)

  • Kang, Kyung Sik
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.4 no.3
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    • pp.77-83
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    • 2008
  • In this paper, CPLD low power technology mapping for reuse module design under the time constraint is proposed. Traditional high-level synthesis do not allow reuse of complex, realistic datapath component during the task of scheduling. On the other hand, the proposed algorithm is able to approach a productivity of the design the low power to reuse which given a library of user-defined datapath component and to share of resource sharing on the switching activity in a shared resource. Also, we are obtainable the optimal the scheduling result in experimental results of our using chaining and multi-cycling in the scheduling techniques. Low power circuit make using CPLD technology mapping algorithm for selection reuse module by scheduling.

An Examination of Needs for the Reuse Planning of Deteriorated Multi-family Housing (노후공동주택의 재사용계획을 위한 요구성 조사)

  • 현택수;장석하;이병태
    • Journal of the Korean housing association
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    • v.10 no.1
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    • pp.137-144
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    • 1999
  • This study examines the general reuse plan for deteriorated multi-family housing (apartrtments) in the urban fringe of Taegu City. The apartments which were built in the 1970's have to be improved. It is necessary to carry out the actual investigation for alternatives of reconstruction or reuse. From the above point of view, the study lays its purpose to find pertinent directions for the reasonable reuse plan, and gets on as follows; 1) Analize the residential state for users' needs of detoriorated aprtments through an investigation. 2) Synthesize the experts' opinions about matters related to reuse planning through a questionnaire. 3) Suggest the general solutions in three areas; unit dwelling, housing site, equipment and facilities, Finally, in the future housing development projects, concepts of reuse planning should be reflected beforehand.

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pH Control for Dyebath Reuse in Dyeing of Polyamide with Binary Mixtures of Acid Dyes

  • Koh, Joonseok;Park, Sang Hyuck;Shim, Goo Hwan;Cho, Dae Hwan;Kim, Jae Pil
    • Fibers and Polymers
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    • v.5 no.2
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    • pp.110-116
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    • 2004
  • Hydrolyzable organic esters were compared with ammonium sulphate as an acid donor for the pH control in dye-bath-reuse system of acid dyes mixtures. The ability of pH control, levelness, dyeing properties and reproducibility in dye-bath-reuse system were investigated comparatively. Hydrolyzable organic esters showed higher exhaustion and color yield than ammonium sulphate. In addition, hydrolyzable organic ester exhibited very low conductivity less than 0.5 mS, while ammonium sulphate give high conductivity. However, we could not observe any difference in levelness of dyed samples between two kinds of acid donors in laboratory scale dyeing. Over 10 cycles of reuse, hydrolyzable organic esters showed higher reproducibility than ammonium sulphate. No deterioration of the color fastness and levelness occurs over 10 cycles of reuse.

A Study on the Antecedents of Research Facility Public Usage Enhancement: Focusing on Service Quality, User Satisfaction and Reuse/Recommendation Intention in the Case of RFID/USN Support Center (공공 연구시설 활용 증진의 선행요인에 대한 연구: RFID/USN 종합지원센터의 서비스품질, 이용자만족, 재이용 및 추천의도를 중심으로)

  • Yoo, Seuck-Cheun;Jung, Uk;Park, Chan-Kyoo
    • Journal of the Korean Operations Research and Management Science Society
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    • v.35 no.2
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    • pp.37-51
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    • 2010
  • Understanding the antecedents of high public usage of national R&D facilities is a critical issue for both academics and facility managers. Previous researchrelated to general service management has identified service quality and user satisfaction as important antecedents of reuse and recommendation intention. The current paper reports findings from a survey which looked into the impact of service quality dimensions and user satisfaction on reuse and recommendation intention in the field of R&D facility public usage. Findings indicate that service quality appears to be linked to user satisfaction, and user satisfaction to be linked to reuse and recommendation intention. Findings also indicate that user satisfaction played as a mediator on the relationship between service quality and reuse/recommendation intentions in R&D facility public usage domain.

Spatial Reuse Algorithm Using Interference Graph in Millimeter Wave Beamforming Systems

  • Jo, Ohyun;Yoon, Jungmin
    • ETRI Journal
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    • v.39 no.2
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    • pp.255-263
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    • 2017
  • This paper proposes a graph-theatrical approach to optimize spatial reuse by adopting a technique that quantizes the channel information into single bit sub-messages. First, we introduce an interference graph to model the network topology. Based on the interference graph, the computational requirements of the algorithm that computes the optimal spatial reuse factor of each user are reduced to quasilinear time complexity, ideal for practical implementation. We perform a resource allocation procedure that can maximize the efficiency of spatial reuse. The proposed spatial reuse scheme provides advantages in beamforming systems, where in the interference with neighbor nodes can be mitigated by using directional beams. Based on results of system level measurements performed to illustrate the physical interference from practical millimeter wave wireless links, we conclude that the potential of the proposed algorithm is both feasible and promising.