• 제목/요약/키워드: Smart distribution management system

검색결과 154건 처리시간 0.029초

RFID/NFC 물류의 빅 데이터 처리를 위한 하둡 시스템의 설계 (Hadoop System Design for Big data Processing of RFID Distribution)

  • 김남호;노진헌;정희자
    • 스마트미디어저널
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    • 제2권3호
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    • pp.47-53
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    • 2013
  • 최근 융합 IT의 대표적 응용분야로서 물류시스템에 RFID/NFC 등의 기술이 사용되고 있으며, 물류의 흐름에 따른 많은 빅 데이터(Big Data)가 생성되고 있다. 이러한 분산된 데이터를 수집하여 하둡 시스템의 병렬처리 기능으로 생산 아이템의 물류 정보와 물류의 이력관리를 위한 정보를 생성할 수 있다. 이를 지원하기 위한 하둡 시스템 설계 및 프로토타입을 개발하여 이의 활용가능성을 타진하였다.

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Voltage Measurement Accuracy Assessment System for Distribution Equipment of Smart Distribution Network

  • Cho, Jintae;Kwon, Seong-chul;Kim, Jae-Han;Won, Jong-Nam;Cho, Seong-Soo;Kim, Juyong
    • Journal of Electrical Engineering and Technology
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    • 제10권3호
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    • pp.1328-1334
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    • 2015
  • A new system for evaluating the voltage management errors of distribution equipment is presented in this paper. The main concept of the new system is to use real distribution live-line voltage to evaluate and correct the voltage measurement data from distribution equipment. This new approach is suitable for a new Distribution Management System (DMS) which has been developed for a distribution power system due to the connection of distributed generation growth. The data from distribution equipment that is installed at distribution lines must be accurate for the performance of the DMS. The proposed system is expected to provide a solution for voltage measurement accuracy assessment for the reliable and efficient operation of the DMS. An experimental study on actual distribution equipment verifies that this voltage measurement accuracy assessment system can assess and calibrate the voltage measurement data from distribution equipment installed at the distribution line.

스마트팩토리 구축전략과 중소.중견 제조기업의 적용 방안 (Strategies of smart factory building and Application of small & medium-sized manufacturing enterprises)

  • 박종식;강경식
    • 대한안전경영과학회지
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    • 제19권1호
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    • pp.227-236
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    • 2017
  • Smart Manufacturing Factory is a paradigm of the future lead to the fourth industrial revolution that led Germany and the United States. Now the automation of the production facility and won a certain degree, and through the process of integrating the entire process, including planning, design, distribution of information and communication technology products in emerging as a core competitiveness of the national economy. In particular, the company accelerated the smart factory building in order to improve the manufacturing industry, cost savings and productivity simply to incorporate internet of things(IoT),Robot, artificial intelligence, big data technology as a factory automation level of sophistication of the system and out to progress to the level that replaces human labor have. In this we should look at the trend of promoting domestic and foreign factories want to present these smart strategies for Korea.

분전반 전력관리용 지능형 계측 제어 시스템 개발 (A Development of Intelligent Metering and Control System for Energy Management of Electric Cabinet Panel)

  • 박병철;박재성;송성근;신중린
    • 조명전기설비학회논문지
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    • 제27권8호
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    • pp.90-97
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    • 2013
  • In recent years, the many electric saving methods are studied because of difficulty of meeting the demand. The electric energy management such as monitoring of branch power consumption, demand control, metering, power quality monitoring, electric safety monitoring can make energy saving. The purpose of this paper is to develop a system which can provide the integrated management of various functions required for energy management by consumers. In this system all functions which were embodied into each devices are integrated into intelligent meter. The developed systems are tested and implemented by installing at consumer electric distribution panel.

스마트워크 품질이 집단지성 및 직무만족에 미치는 영향 (The Effect of Smart Work Quality on Collective Intelligence and Job Satisfaction)

  • 김현철;김오우
    • 유통과학연구
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    • 제13권5호
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    • pp.113-120
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    • 2015
  • Purpose - As the rapid development of ICT has been made recently, many domestic companies are trying to introduce smart work infrastructure. The purpose of institution of smart work is to enhance their performance. To this end, it is necessary to advance the way of working. Developing employees' collective intelligence should be regarded as a prerequisite for advancing the way of working. Job satisfaction of the employees is another important factor to enhance organizational performance. So this study aims to provide the theoretical background of systematic approach to smart work quality by empirically analyzing the effect of smart work quality on collective intelligence and job satisfaction. Research design, data, and methodology - A structural equation model was designed to examine cause-and-effect relationships among three latent variables(smart work quality, collective intelligence, job satisfaction). Three hypotheses were formulated. The first hypothesis is that the effect of smart work quality on collective intelligence will be positively and statistically significant. Likewise, the second hypothesis is that the effect of smart work quality on job satisfaction will be positively and statistically significant. Finally, the third hypothesis is that the effect of collective intelligence on job satisfaction will be positively and statistically significant. Based on the previous researches, 34 questionnaire items were developed to measure the effect of the three variables. The survey was conducted on 162 employees who are working under smart work environment. The number of the effective questionnaires for the analysis was 154. PASW Statistics 18 and AMOS 18 were used for the statistical analysis. Results - The validity and reliability test for questionnaire items have been carried out. From the factor analysis, 1 out of 34 items was eliminated. As a result, 33 out of 34 items were used for analyzing. The values of Cronbach's α ranged from 0.701 to 0.910, indicating the acceptable reliability of the questionnaire items. The values of χ2, df, CFI, TLI, RMSEA of the model are 102.838, 51, 0.949, 0.935, 0.082, respectively. So the structural equation model was statistically significant. The first and third hypotheses were supported. But the second hypothesis was rejected. Conclusions - An analysis using structural equation model showed meaningful implications about the effect of smart work quality on collective intelligence and job satisfaction. First, as the five quality elements of the smart work improved, the level of collective intelligence increased. Second, the statistical analysis showed smart work didn't have a direct effect on job satisfaction, which is inconsistent with the prior findings. The main purpose of smart work is to help achieve greater performance. The companies also need to make efforts to improve job satisfaction of their employees along with achieving greater performance. Third, an organization with higher level of collective intelligence showed greater job satisfaction. The companies under smart work environment need to develop functions to encourage participation, sharing, openness, and collaboration. This research will provide useful information for the companies which want to introduce smart work, distribution information system, management information system, etc.

스마트폰을 활용한 농산물 이력관리시스템 구축 방안 (Implementation of Agricultural Products Traceability management system using Smart Phones)

  • 박두진
    • 한국정보통신학회:학술대회논문집
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    • 한국정보통신학회 2012년도 춘계학술대회
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    • pp.862-863
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    • 2012
  • 최근 전세계적으로 먹거리에 대한 빈번한 사고로 인해 소비자들은 안전한 농산물의 유통에 대한 관심이 높아지고 있다. 또한 한미 FTA 등의 자유무역체결로 인해 농산물의 국제적 이동이 증가함에 따라 안전한 농산물의 유통은 소비자의 신뢰 및 경쟁력 확보를 위한 기업의 중요한 경쟁요인으로 작용하고 있다. 따라서 농산물의 안전관리를 위해서는 국내외적으로 유입되는 농산물의 생장환경이력과 유통이력 등의 정보를 조회하는 시스템이 필요하다. 본 논문에서는 소비자의 스마트폰을 활용하여 매대에 진열되어 있는 농산물의 이력을 확인할 수 있는 소비자 중심의 농산물 이력관리시스템의 구축 방안을 제안한다.

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대학생의 스마트 학습관리시스템 수용에 대한 연구 - 블랙보드 도입과 활용 - (College student adoption of smart learning management system - Implementing Blackboard learn -)

  • 이규혜;김지연;서현진
    • 복식문화연구
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    • 제27권5호
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    • pp.512-523
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    • 2019
  • Contemporary University students are considered the Z generation who were born after 1995. They are more tech savvy than millennials. To target the generation, traditional class management platforms have evolved to smart LMS that is more customized and accessible for smart devices. Global level information search and collaboration can also be implemented using such smart LMS. However, switching from one LMS to another LMS requires great effort from teachers and support from staffs. This study measured the learners' perception of the system when they were exposed to a new smart-LMS. Blackboard Learn Ultra was used for 15 weeks and at the end of the semester, a questionnaire was administered to the students of these classes. Results indicated that experience with previous LMS discouraged students from adopting Blackboard Learn. Result of TAM modeling indicated that perceived usefulness, compared to perceived ease of use and attitude, was an effective aspect to bring positive acceptance of the system. A qualitative approach and network analysis were also conducted based on students' responses. Both positive and negative responses were detected. Inconvenience due to mechanical aspects was mentioned. Dissatisfaction compared to previous local LMS use was also mentioned. Mobile application and communication effectiveness were positive aspects. Revised course development and promoting how useful the system may help enhance the acceptance of the new system.

Ubi-Home에서의 지능적 멀티미디어 스트리밍을 지원하는 DRM 설계 및 구현 (Design and Implementation of the DRM Supporting Smart Multimedia Streaming in Ubi-Home)

  • 박종혁;이상진;홍인화;안태원;이덕규
    • 한국통신학회논문지
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    • 제31권3C
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    • pp.293-301
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    • 2006
  • 본 논문에서는 Ubi-Home에서의 지능적 멀티미디어 스트리밍을 지원하는 콘텐츠 보호 및 관리 시스템(UHSMS-DRM: Ubi-Home Smart Multimedia Streaming-Digital Right Management)을 설계 및 구현하였다. 제안 시스템은 Ubi-Home에서 디지털 콘텐츠의 저작권 보호 및 관리를 위한 유연한 유통 플랫폼을 제공하며, PC, STB, PDA, Portable device 등 다양한 디바이스의 인증을 통해 정당한 사용자에게 Multimedia Steaming Service를 제공한다. 그리고, 도메인 인증개념을 적용하여 Ubi-Home의 모든 디바이스에 대한 라이센스 관리의 효율성을 높인다. 또한, Ubi-Home에서 intelligent Service를 위해 사용자의 위치를 인지하기 위한 알고리즘을 제안 및 적용한다.

A Design for a Hyperledger Fabric Blockchain-Based Patch-Management System

  • Song, Kyoung-Tack;Kim, Shee-Ihn;Kim, Seung-Hee
    • Journal of Information Processing Systems
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    • 제16권2호
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    • pp.301-317
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    • 2020
  • An enterprise patch-management system (PMS) typically supplies a single point of failure (SPOF) of centralization structure. However, a Blockchain system offers features of decentralization, transaction integrity, user certification, and a smart chaincode. This study proposes a Hyperledger Fabric Blockchain-based distributed patch-management system and verifies its technological feasibility through prototyping, so that all participating users can be protected from various threats. In particular, by adopting a private chain for patch file set management, it is designed as a Blockchain system that can enhance security, log management, latest status supervision and monitoring functions. In addition, it uses a Hyperledger Fabric that owns a practical Byzantine fault tolerant consensus algorithm, and implements the functions of upload patch file set, download patch file set, and audit patch file history, which are major features of PMS, as a smart contract (chaincode), and verified this operation. The distributed ledger structure of Blockchain-based PMS can be a solution for distributor and client authentication and forgery problems, SPOF problem, and distribution record reliability problem. It not only presents an alternative to dealing with central management server loads and failures, but it also provides a higher level of security and availability.

직류시스템 해석을 위한 상태추정 알고리즘에 관한 연구 (A Study on the State Estimation Algorithm for DC System Analysis)

  • 권혁일;김홍주;김주용;조윤성
    • 전기전자학회논문지
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    • 제22권3호
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    • pp.754-758
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    • 2018
  • 전력계통에서 해석 하는 방법종류로 정적해석과 동적해석 그리고 온라인 해석과 오프라인 해석으로 나뉜다. 기존의 계통 해석하는 방법으로는 오프라인 정적해석을 이용하며 PSS/E에서도 정적해석을 주로 사용한다. 하지만 우리가 사용하고 있는 실제 계통에서는 실시간으로 값이 변한다. 정확한 해석을 하기 위해 실시간으로 해석이 가능한 온라인 해석과 동적해석이 요구되며 이에 따라 EMS(Energy Management System)에 대한 중요도가 높아지고 있다. 본 논문에서는 다양한 EMS시스템 중에서도 실시간으로 취득 점으로부터 데이터를 받아와 해석 할 수 있는 정적 온라인 해석인 상태추정을 다룰 것이다. 오늘날 DC부하, DC배전망, 신재생에너지 등 다양한 분야에서 DC계통이 확산되고 있다. 이처럼 DC계통에 많은 관심과 이목이 집중되고 있다. 본 논문에서는 DC계통에 접목시킬 수 있는 상태추정에 대한 해석과 사례연구를 통한 사용가능성에 대해 연구하였다.