• Title/Summary/Keyword: POS 시스템

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대형서점 POS시스템 운영 문제 많다

  • Park, Jeon-Geol
    • The Korean Publising Journal, Monthly
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    • s.110
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    • pp.30-30
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    • 1992
  • 교보문고에서 자체 개발.시행하고 있는 인스토아 마킹은 ISBN제도를 근본적으로 뒤흔들 우려가 있다. 몇몇 서점들에서 교보문고의 경우를 본보기로 삼으려는 움직임이 벌써부터 일고 있다고 하는데, 이럴 경우 출판업계의 소스마킹 의지를 약화시켜 ISBN제도의 정착을 지연하거나 해칠 수도 있게 된다.

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Optimization technique of POS MPPT operational characteristics for grid-connected PV generation system (계통 연계형 태양광발전시스템을 위한 POS MPPT 운전특성 최적화 기법)

  • Park, Sang-Soo;Kim, Sang-Yong;Jang, Seong-Jae;Kim, Gyeong-Hun;Seo, Hyo-Ryong;Park, Min-Won;Yu, In-Keun
    • Proceedings of the KIEE Conference
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    • 2009.07a
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    • pp.1064_1065
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    • 2009
  • PV (Photovoltaic) power generation system has been widely studied as a clean and renewable power source. Tracking the MPP (maximum power point) of a PV array is usually an essential part of a PV system. This paper describes POS (Photovoltaic Output Sensorless) MPPT method and optimization technique of its operational characteristics for grid-connected PV generation system. A DC-DC converter has been used to step-up the PV voltage and DC-AC converter has been used for connecting the system to the grid. Optimization technique has been implemented to optimize the current and voltage controller gain parameters and duty ratio increment of DC-DC converter. Simulation results reveal that the proposed control has better response.

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The Effect of High Performance Work System on Research Performance: The Moderated Mediation Effect of Perceived Organizational Support (고성과작업시스템이 연구성과에 미치는 효과: 조직후원인식의 조절된 매개효과)

  • Eun-Sun Park
    • Asia-Pacific Journal of Business
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    • v.15 no.1
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    • pp.159-177
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    • 2024
  • Purpose - The purpose of this study is to reveal the effect of a High Performance Work System(HWPS) on research performance. In addition, this study examines the mediation effect of Innovation Commitment(IC) and the moderated mediation effect of Perceived Organizational Support(POS), and seeks to reveal the antecedents and boundary variables that affect research performance. Design/methodology/approach - The level of analysis is at the individual level. A survey was collected from researchers at government-funded research institutes in the Daejeon and Sejong areas. 265 questionnaires were used in the final statistical analysis. Confirmatory factor analysis was performed using the AMOS 21. Correlation analysis, regression analysis, and bootstrapping by Process Macro were performed using the SPSS 19. Findings - As a result of the study, HWPS has a positive effect on IC, and IC has a positive effect on research performance. Through this results, it was found that IC mediates the relationship between the HPWS and research performance. In addition, POS positively moderated the mediating effect of HPWS on research performance through IC. Research implications or Originality - First, IC can be increased through a HPWS. Second, the effect of the HWPS on individual research performance through IC provides implications that the HWPS can be effectively applied not only to general companies but also to research organizations. Third, the boundary effect of POS was revealed. Fourth, research performance was measured through objective quantitative indicators rather than subjective.

Mutimedia Communication System on PDA using IP Multicast (IP Multicast를 이용한 PDA용 멀티미디어 통신 시스템)

  • 황재민;김진환;정인환
    • Proceedings of the Korean Information Science Society Conference
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    • 2003.10c
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    • pp.61-63
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    • 2003
  • 본 논문에서는 PDA에서 IP Multicast방법을 이용한 멀티미디어 통신 시스템을 설계하고 구현한다. IP Multicast는 하나이상의 송신지에서 다수의 수신지로 패킷을 보내게 되는 통신방식으로 특정 그룹내에서의 통신을 가능하게 한다. 본 논문에서 구현한 PDA용 멀티미디어 통신 시스템은 음성, 문자, 필기체등으로 구성된 멀티미디어 요소를 IP Multicast를 응용한 통신 시스템이다. 구현된 PDA용 멀티미디어 통신 시스템은 네트워킹의 이동성(mobility)과 단말의 휴대성(portability)이 요구되는 유통업계의 POS시스템이나, 서비스업계의 사고보고, 주차통제, 응급서비스 및 수리, 유지보수등의 분야에서 폭넓게 사용될 수 있다.

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A Splog Detection System Using Support Vector Systems (지지벡터기계를 이용한 스팸 블로그(Splog) 판별 시스템)

  • Lee, Song-Wook
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.15 no.1
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    • pp.163-168
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    • 2011
  • Blogs are an easy way to publish information, engage in discussions, and form communities on the Internet. Recently, there are several varieties of spam blog whose purpose is to host ads or raise the PageRank of target sites. Our purpose is to develope the system which detects these spam blogs (splogs) automatically among blogs on Web environment. After removing HTML of blogs, they are tagged by part of speech(POS) tagger. Words and their POS tags information is used as a feature type. Among features, we select useful features with X2 statistics and train the SVM with the selected features. Our system acquired 90.5% of F1 measure with SPLOG data set.

A LPG Dispensing Control System based on a 16-bit Microprocessor (16-bit 마이크로프로세서로 구현한 LPG 충전 제어 시스템)

  • 이상훈;홍남관
    • Journal of the Institute of Convergence Signal Processing
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    • v.3 no.2
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    • pp.83-88
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    • 2002
  • In this paper, a POS interfacing and temperature compensable LPG dispensing control system(LDCS) has been developed. A LDCS includes a 16-bit 80C196 microprocessor, RAM, ROM, video driver, and programmable peripheral devices. Based on gas flow encoding pulse, temperature-voltage conversion values and apparatus calibration values, the LDCS controls the LPG dispensing quantity with switching on or off the solenoid valves. The temperature compensation is performed with a 10-bit A/D conversion and its range is from +7$0^{\circ}C$ to -3$0^{\circ}C$ with a 0.5$^{\circ}C$ resolution.

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A knowledge-based pronunciation generation system for French (지식 기반 프랑스어 발음열 생성 시스템)

  • Kim, Sunhee
    • Phonetics and Speech Sciences
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    • v.10 no.1
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    • pp.49-55
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    • 2018
  • This paper aims to describe a knowledge-based pronunciation generation system for French. It has been reported that a rule-based pronunciation generation system outperforms most of the data-driven ones for French; however, only a few related studies are available due to existing language barriers. We provide basic information about the French language from the point of view of the relationship between orthography and pronunciation, and then describe our knowledge-based pronunciation generation system, which consists of morphological analysis, Part-of-Speech (POS) tagging, grapheme-to-phoneme generation, and phone-to-phone generation. The evaluation results show that the word error rate of POS tagging, based on a sample of 1,000 sentences, is 10.70% and that of phoneme generation, using 130,883 entries, is 2.70%. This study is expected to contribute to the development and evaluation of speech synthesis or speech recognition systems for French.

A Study on the PV Output Senseless MPPT Control Method for PV Generation System Applied by Fuzzy Control (퍼지 제어를 이용한 태양광 발전시스템의 PV Output Senseless(POS) MPPT에 관한 연구)

  • Kim, Sang-Yong;Jang, Sung-Jae;Park, Sang-Soo;Kim, Kyung-Hun;Seo, Hyo-Ryong;Park, Minwon;Yu, In-Keun
    • Proceedings of the KIEE Conference
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    • 2008.07a
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    • pp.1144-1145
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    • 2008
  • 기존의 MPPT제어의 방식은 태양전지의 출력을 비교하여 최대점을 추종하는 방식으로써 최대전력점을 추종하는데 많은 시간이 필요하다. 따라서 본 논문에서는 새로운 MPPT제어법인 POS(PV Output Senseless) MPPT법에 최대전력추종의 시간이 빠른 퍼지제어를 적용하여, 기존의 MPPT제어의 방식과 퍼지제어와의 최대전력점의 추종시간을 예측할 수 없는 기상조건에서 비교분석하여 제안된 방법의 유효성을 시뮬레이션 결과를 통해 확인하였다.

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모빌컴퓨팅 태풍의 핵으로 등장

  • Korea Database Promotion Center
    • Digital Contents
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    • no.11 s.66
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    • pp.20-21
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    • 1998
  • 모빌컴퓨팅이 중요한 IT 솔루션으로 등장하면서 데이터베이스관리시스템(DBMS)업체들이 시장 공략에 본격 나서고 있다. 한국사이베이스, 한국오라클, 한국인포믹스, 한국IBM, 데이텍 등 DBMS업체들은 최근 보험영업, 자동차영업, POS 등 유통시장과 무선통신시장을 타켓으로 활발한 영업활동을 전개하고 있다.

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Design of Path Weighting Data Analysis System for Efficient Product Arrangement (효율적인 상품 배치를 위한 경로 가중치 데이터 분석 시스템 설계)

  • Kim, Bong-Hyun
    • Journal of Digital Convergence
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    • v.14 no.10
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    • pp.167-172
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    • 2016
  • Commercial analysis has been used for a lot of reasons such as improving the distribution structure, operational cost savings. However, existing commercial assay system is mostly flow through the analysis of the population and the environment around the store. Therefore, in this paper, we design a path weighted data analysis system for efficient product arrangement. It is not applying the analysis method of the existing commercial sales center but the data analysis system applying the weight to the form of customers' paths in a store. In conjunction with the existing POS system, it provides effective product placement in department stores, such as supermarkets, convenience stores. To this end, a system that maximizes efficiency of product placement in stores, receiving path data, converting them into statistics data that apply the weight, and printing out them into a visualized monitering system for the manager to see was designed.