• 제목/요약/키워드: cornerstone

검색결과 230건 처리시간 0.026초

누전차단기가 설치된 옥내전로에서의 화재위험성 (Electrical fire hazards in the domestic circuit protected by Electric Leakage circuit Breaker(ELB))

  • 홍성호;김두현;김상철;김상렬
    • 한국산업안전학회:학술대회논문집
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    • 한국안전학회 1998년도 추계 학술논문발표회 논문집
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    • pp.335-340
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    • 1998
  • This paper presents a study on the electrical fire hazards of leakage current in a distribution circuit simulating a domestic circuit for low voltage. In this simulated circuits, total charges and energy of leakage current are calculated by a theoretical approach and compared with the results obtained from experiments, The approach and results become a cornerstone for studying and analyzing causes of electrical fires.

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부품공급장치 선정을 위한 전문가 시스템 (An expert system approach to the type selection of part feeders)

  • 조덕영;조형석
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1989년도 한국자동제어학술회의논문집; Seoul, Korea; 27-28 Oct. 1989
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    • pp.296-301
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    • 1989
  • As a cornerstone of assembly automation, the automatic part feeders are used to feed the various kind of the parts to the assembly workstation in the desired order and fashion. In this paper, EXPERT SYSTEM consisting of the data base for the feeding functions and part properties plus the rule base for the selection of feeder types is developed. The symbolic data of the part properties are used as basic factors in the selection rule of the suitable feeder types.

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종이기록물 보존환경의 현단계와 개선 방안 (Investigation and Improvement of the Preservation Environment for Paper Records)

  • 손혜경
    • 한국도서관정보학회지
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    • 제31권3호
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    • pp.213-241
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    • 2000
  • ‘기록물의 보존’은 도서관존립에 초석이 되는 개념이다. 종이는 보존에 가장 적합한 매체이다. 이에 본 연구는 종이기록물의 바람직한 보존환경을 분석하고 현재 도서관이 기록물 보존 환경을 조사한다. 아울러 종이기록물을 제대로 보존하기 위한 방안을 제시한다.

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구강궤양 및 수포성 질환 (Oral ulcerative and vesicular diseases)

  • 변진석
    • 대한치과의사협회지
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    • 제55권9호
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    • pp.634-639
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    • 2017
  • Oral ulcerative and/or vesicular diseases have similar characteristics of clinical phenotypes. Detailed and careful history taking is the cornerstone of the diagnosis of oral mucosal disease. Moreover, complete screening of review of system for patient is important. Through this article, the simple ulcerative, recurrent ulcerative, acute multiple ulcer, chronic multiple ulcerative diseases will be discussed. Clinicians have to keep in mind its differential diagnosis and management.

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품질 개선을 위한 CTQ 측정에 대한 연구 (Study on CTQ measurement for improving Quality)

  • 이상복
    • 한국품질경영학회:학술대회논문집
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    • 한국품질경영학회 2006년도 춘계학술대회
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    • pp.149-152
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    • 2006
  • In this paper, We study several method of CTQ measurement for improvement of Quality. Measurement are cornerstone of basic improvement of Science and Technology and are considered continuous thesis. In this paper, we survey measure several variable for CTQ for Six sigma. We introduce Taguchi's SN ration Which is important example good measure for improve quality Improvement are succeed by good select measure variable which is called CTQ which should agree problem define and final goal.

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추천 시스템의 협업 필터링: 아이디어와 평가 (Collaborative Filtering in Recommendation Systems: Idea and Evaluation)

  • 김주성
    • 한국정보처리학회:학술대회논문집
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    • 한국정보처리학회 2019년도 추계학술발표대회
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    • pp.716-719
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    • 2019
  • Collaborative filtering has been used frequently as a recommendation system. To reduce the errors on predicting the ratings that may be given by the user, we propose a new aggregation method to do so. We used a real-world dataset MovieLens to compare our proposed method from previously existing methods, and accordingly to the results, ours was more accurate.

Signal Processing for Perpendicular Recording Systems

  • Lee, Jun;Woo, Choong-Chae
    • 전기전자학회논문지
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    • 제15권1호
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    • pp.70-75
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    • 2011
  • Longitudinal recording has been the cornerstone of all two generations of magnetic recording systems, FDD and HDD. In recent, perpendicular recording has received much attention as promising technology for future high-density recording system Research into signal processing techniques is paramount for the issued storage system and is indispensable like longitudinal recording systems. This paper focuses on the performance evaluation of the various detectors under perpendicular recording system. Parameters for improving the their performance are examined for some detectors. Detectors considered in this work are the partial response maximum likelihood (PRML), noise-predictive maximum likelihood (NPML), fixed delay tree search with decision feedback (FDTS/DF), dual decision feedback equalizer (DDFE) and multilevel decision feedback equalizer (MDFE). Their performances are analyzed in terms of mean squared error (MSE) and noise power spectra, and similarity between recording channel and partial response (PR) channel.

유비쿼터스 컴퓨팅 기반의 비즈니스 모델에 관한 연구 : 연구 분석 프레임워크 수립 및 실증 분석 (Ubiquitous Computing-Driven Business Models : An Analytical Structure & Empirical Validations)

  • 황경태;신봉식;김경재
    • Journal of Information Technology Applications and Management
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    • 제12권4호
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    • pp.105-121
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    • 2005
  • Ubiquitous computing(UC) is an emerging paradigm. Its arrival as a mainstream is expected to trigger innovative UC-driven business models (UCBMs). Currently, there is no Parsimonious methodology to analyze and provide diagnostics for UCBMs. With this research, we propose a analytical architecture that enables the assessment of an UCBM in its structural strengths and weaknesses. With value logic as the cornerstone, the architecture is composed of value actors, value assets, value context, business value Propositions, customer value propositions, value creation logics, and value assumptions. Dimensional variables are initially Identified based on the review of business model literature. Then, their significance is empirically examined through 14 UCBM scenarios, and variables that are expected to Play an important role in the UCBM assessment are decided. Finally, by analyzing the scenarios in terms of the dimensional variables, we attempted to summarize general characteristics of emerging UCBMs.

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The Role of Bronchodilators in Preventing Exacerbations of Chronic Obstructive Pulmonary Disease

  • Beeh, Kai M.
    • Tuberculosis and Respiratory Diseases
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    • 제79권4호
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    • pp.241-247
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    • 2016
  • Bronchodilators are the cornerstone of symptomatic chronic obstructive pulmonary disease (COPD) treatment. They are routinely recommended for symptom reduction, with a preference of long-acting over short-acting drugs. Bronchodilators are classified into two classes based on distinct modes of action, i.e., long-acting antimuscarinics (LAMA, once-daily and twice-daily), and long-acting ${\beta}2$-agonists (LABA, once-daily and twice-daily). In contrast to asthma management, evidence supports the efficacy of both classes of long-acting bronchodilators as monotherapy in preventing COPD exacerbations, with greater efficacy of LAMA drugs versus LABAs. Several novel LAMA/LABA fixed dose combination inhalers are currently approved for COPD maintenance treatment. These agents show superior symptom control to monotherapies, and some of these combinations have also demonstrated superior efficacy in exacerbation prevention versus monotherapies, or combinations of inhaled corticosteroids plus LABA. This review summarizes the current data on clinical effectiveness of bronchodilators alone or in combination to prevent exacerbations of COPD.

건설중장비 디자인의 변천과정에 관한 연구 -굴삭기를 중심으로- (A Study on the transition of Construction Equipment -Focused on the Excavator-)

  • 도경찬
    • 디자인학연구
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    • 제16권4호
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    • pp.277-288
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    • 2003
  • 최근 들어 건설중장비 분야에도 디자인에 대한 요구가 날로 증대되고 있으며, 보다 심도 있는 디자인연구가 필요한 시점에 와 있다. 이런 요구에 부응하기 위해서는 건설중장비의 특성과 이해를 바탕으로 변천과정에 대한 연구가 선행되어야 할 것으로 모인다. 본 연구는 건설중장비 디자인의 외관, 조직, 프로세스의 변천과정과 개발사례 등의 연구를 통해 건설중장비디자인의 변천과정을 연구하고 이 연구를 바탕으로 건설중장비디자인의 트렌드 및 추세를 제시하고자 한다. 또한 향후 이 분야의 연구에 기초 자료로서 활용될 수 있을 것이다.

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