• Title/Summary/Keyword: consensus

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A Decentralized Task Structure for Cooperative Transportation Missions (협업 수송 임무을 위한 분산 임무 구조)

  • Kim, Keum-Seong;Choi, Han-Lim
    • The Journal of Korea Robotics Society
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    • v.10 no.3
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    • pp.133-138
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    • 2015
  • This paper presents a modified task structure of coupled-constraints consensus based bundle algorithm especially to resolve the cooperative transportation problem. The cooperative transportation mission has various types of constraints. A modified framework to generate activities and subtasks to solve time and task constraints of the transportation mission by using coupled-constraints consensus based bundle algorithm is suggested. In this paper modifications on task structure, reward function and arrival time calculation are suggested to handle the constraints of cooperative transportation mission.

The present condition of Korean children born small for gestational age (국내 부당경량아의 현황)

  • Hwang, Il Tae
    • Clinical and Experimental Pediatrics
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    • v.52 no.2
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    • pp.137-141
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    • 2009
  • Depending on the definition used, between 3% and 10% of live neonates are small for gestational age (SGA). The definition of SGA requires the following: (1) accurate knowledge of gestational age; (2) accurate measurements at birth of weight, length, and head circumference; (3) a cutoff, which has been variably set at the 10th percentile, 3rd percentile, or at less than 2 standard deviation from the mean, and (4) race and ethnicity-specific growth curve. Consensus statements are needed on the management of growth hormone therapy in SGA children, as well as treatment and long-term health outcomes such as impaired cognitive function, increased risk of adult cardiovascular disease, and type 2 diabetes.

The Relationship between Election and Consensus in Asynchronous Distributed System (비동기적 분산 시스템하에서 선출 문제와 합의 문제의 관련성)

  • Park, Seong-Hun
    • Journal of KIISE:Computer Systems and Theory
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    • v.27 no.12
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    • pp.967-973
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    • 2000
  • 본 논문에서는 신뢰할 수 없는 고장추적 장치로 구성된 비동기적 분산 시스템 하에서 선출(election) 문제와 합의(consensus) 문제의 관련성에 관하여 연구하고자 한다. 먼저 선출 문제는 합의 문제보다 더욱 어려운 문제임을 보인다. Chandra와 Toueg는 [8]에서 합의 문제는 비동기적 분산 시스템에서 신뢰할 수 없는 고장 추적 장치(unreliable failure detector)를 이용하여 해결 할 수 있음을 언급하였다. 그러나, 합의 문제와는 대조적으로 선출 문제는 시스템 상에서 단 한 개의 노드가 죽은 경우에도 신뢰 할 수 없는 고장 추적 장치를 이용하여 선출 문제를 해결할 수 없다. 이는 선출 문제는 합의의 문제보다 더욱 어려운 문제임을 의미한다. 보다 엄격하게 표현하자면, 선출 문제를 해결하는데 필요한 가장 약한 고장 추적 장치 (perfect failure detector) 이어야 하는 것으로, 이는 합의 문제를 해결하는데 필요한 가장 약한 고장 추적 장치보다 확실히 강한 것이다. 선출 문제가 합의 문제보다 어렵다는 것을 보이기 위해 축소(reduction) 프로토콜을 이용한다.

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A Stereo Matching by the Iterative Relaxation Using the Consensus of Matching Possibility (정합 일치성을 이용한 반복 이완 스테레오 정합)

  • 이왕국;김용석;도경훈;하영호
    • Journal of the Korean Institute of Telematics and Electronics B
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    • v.32B no.1
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    • pp.39-49
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    • 1995
  • Stereo vision is useful to obtain three dimensional depth information from two images taken from different view points. In this paper, we reduce searching area for correspondence by using the intra-scanline constraint, and utilize the inter-scanline constraint and the property of disparity continuity among the neighboring pixels for relaxation. Nodes with 3-D stucture are located on the axes of two views, and have matching possibility of correspondent pixels of two images. A matching is accepted if a node at the intersection of the disparity axes has the greatest matching possibility. Otherwise, the matching possibility of the node is updated by relaxation with the cooperation of neighboring nodes. Further relaxation with competition of two views is applied to a matching possibility of randomly selected node. The consensus of two views increases the confidence of matching, and removes a blurring phenomenon on the discontinuity of object. This approach has been tested with various types of image such as random dot stereogram and aerial image, and the experimental results show good matching performance.

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Determinants of Online Review Adoption : Focusing on Online Review Quality and Consensus (온라인 리뷰 수용에 영향을 미치는 요인 : 온라인 리뷰 품질과 동의성을 중심으로)

  • Hur, Sung-Hey;Ryoo, Sung-Yul;Jeon, Soo-Hyun
    • Journal of Information Technology Applications and Management
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    • v.16 no.4
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    • pp.41-58
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    • 2009
  • This research investigated how people are influenced to adopt online review. We applied the Elaboration Likelihood Model (ELM) and the Technology Acceptance Model (TAM) to this study. Our research model highlights the assessment of online review usefulness as a mediator from online review quality to online review adoption. This research predicted online review consensus has a role to bulid up online reviw usefulness. This study also includes vividness and perceived similarity as determinants of online review quality. Survey data reflect user's perceptions of actual online review they read. Results support most of research hypotheses except hypothesis related to moderating effect of user involvement. This research offers a model for understanding online review user's acceptance. Additional theoretical and practical implications are also discussed in the paper.

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Formation Control Algorithm for Coupled Unicycle-Type Mobile Robots Through Switching Interconnection Topology (스위칭 연결 구조를 갖는 외발형 이동 로봇들에 대한 대형 제어 알고리듬)

  • Kim, Hong-Keun;Shim, Hyung-Bo;Back, Ju-Hoon
    • Journal of Institute of Control, Robotics and Systems
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    • v.18 no.5
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    • pp.439-444
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    • 2012
  • In this study, we address the formation control problem of coupled unicycle-type mobile robots, each of which can interact with its neighboring robots by communicating their position outputs. Each communication link between two mobile robots is assumed to be established according to the given time-varying interconnection topology that switches within a finite set of connected fixed undirected networks and has a non-vanishing dwell time. Under this setup, we propose a distributed formation control algorithm by using the dynamics extension and feedback linearization methods, and by employing a consensus algorithm for linear multi-agent systems which provides arbitrary fast convergence rate to the agreement of the multi-agent system. Finally, the proposed result is demonstrated through a computer simulation.

Species-specific Detection of Erwinia pyrifoliae by PCR Assay Using Enterobacterial Repetivive Intergenic Consensus (ERIC) Primers

  • Park, Duck-Hwan;Thapa, Shree Prasad;Kim, Won-Sik;Hur, Jang-Hyun;Lim, Chun-Keun
    • The Plant Pathology Journal
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    • v.26 no.3
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    • pp.267-270
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    • 2010
  • We designed a sensitive and specific PCR-based method with enterobacterial repetitive intergenic consensus (ERIC) primer to detect Erwinia pyrifoliae, which cause shoot blight in Asian pear, from a mixed culture and infected plant materials. The primers specifically detected only E. pyrifoliae and showed no cross-reactivity with other bacterial phytopathogens.

Application of the Delphi Technique in Modifying AHP Method (Delphi를 사용한 AHP방법론에 관한 연구)

  • Song, Sung-Hwan;Gwon, Seong-Hoon;Park, Jin-Bum;Hong, Soon-Ki
    • Korean Management Science Review
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    • v.26 no.1
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    • pp.53-64
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    • 2009
  • AHP is widely used in various fields owing to its simplicity and clarity. However, it has the problems of reliability of panel's judgement and the assumption that each panelist's ability is equal. In this paper, we propose a reliable AHP method using Delphi technique, which aims to incorporate the relative expertise of panel and to increase their consensus. The method is called the Modified Delphi-AHP. We apply the method to analyzing the demand for lectures of Management of Technology.

The 9th Global Conference for Health Promotion and Shanghai Declaration (제9차 건강증진 국제회의와 상하이 선언)

  • Park, Yoon Hyung
    • Health Policy and Management
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    • v.26 no.4
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    • pp.243-245
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    • 2016
  • The 9th Global Conference for Health Promotion has been held in Shanghai after 30 years of the first Global Conference for Health Promotion in Ottawa, Canada. In the conference, the delegated members of the countries declared 'Shanghai Declaration on promoting health in the 2030 Agenda for Sustainable Development.' In the declaration, the delegated members of country had agreed that health is one of the 'most effective markers' of any city's successful sustainable development and contributes to make cities inclusive, safe, and resilient for the whole population and 'health literacy' empowers individual citizens and enables their engagement in collective health promotion action. And in a parallel session 'Mayors Forum,' they had consensus for health city and they adopted 'Shanghai Consensus on Healthy Cities.' They recognized their political responsibility to create the conditions for every resident of every city to lead more healthy, safe, and fulfilling lives and to support the full realization of human potential and capabilities at all ages in the city environment.

Treatment Outcomes and Prognosis of Benign Vocal Fold Lesions (양성 성대 병변의 치료 결과 및 예후인자)

  • Lee, Seung Won
    • Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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    • v.26 no.2
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    • pp.101-103
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    • 2015
  • There are no standard consensus about treatment results and prognostic factors based on randomized trials for benign vocal fold lesion. Currently, voice therapy is the treatment of choice for vocal nodules, and laryngomicroscopic surgery is for vocal polyps. There are no strong evidences to support it, based on randomized controlled trials, But, it's just a consensus among laryngologist. Considering the pathophysiology of benign vocal cord lesions, cognitive behavioral therapy that corrects the patient's bad voice habits and improves their vocal hygiene could be most important factor for treatment outcomes.

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