• 제목/요약/키워드: On/Off-line Research

검색결과 501건 처리시간 0.03초

On-line 스케줄링을 고려한 off-line 스케줄링

  • 김경훈;김영호;강석호
    • 한국경영과학회:학술대회논문집
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    • 한국경영과학회 1997년도 추계학술대회발표논문집; 홍익대학교, 서울; 1 Nov. 1997
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    • pp.162-165
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    • 1997
  • 본 연구에서는 off-line 스케쥴링과 on-line 스케쥴링을 함께 고려하는 스케쥴링 메카니즘에 대해 설명하였다. 일반적으로 스케쥴링은 off-line 문제를 주로 다룬다. 그러나, off-line으로 생성된 스케쥴은 실시간으로 발생하는 여러 문제들(기계 고장, 긴급 주문등) 때문에 현실과 맞지 않게 되어 유용성이 떨어지는 경우가 자주 발생한다. 따라서 off-line 스케쥴링의 결과를 수행할때 위와 같은 문제가 발생할 경우, 스케쥴의 변화를 흡수하면서 off-line 스케쥴링의 결과를 최대한 유지할수 있는 on-line 스케쥴링에서 이 같은 스케쥴 실행시의 문제를 해결할 수 있도록 bidding 알고리즘을 사용하는 방법을 제시하였다.

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Analysis of Off-Line and On-Line Partial Discharge in High Voltage Motor Stator Windings

  • Kim, Hee-Dong;Kong, Tae-Sik;Lee, Sang-Kil;Kim, Beom-Soo;Kim, Doo-Young
    • Journal of Electrical Engineering and Technology
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    • 제10권3호
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    • pp.1086-1092
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    • 2015
  • The off-line and on-line partial discharge (PD) in the stator winding of three high-voltage (HV) motors (1,400 HP, 6.6 kV) is measured and analyzed in this paper. The off-line PD is measured at high values between 24,300 ~ 36,100 pC after 18 years of motor operation. Spare replacement motors were not available for testing the degree of deterioration of the stator windings in standstill status. Therefore, on-line periodic analysis was conducted to monitor the trend of PD after installing a ceramic sensor (110 pF, 6.6 kV) in the terminal box for each phase of each motor. In the stator winding of the No.1 and No.2 HV motors, which showed high magnitudes of off-line PD and low magnitudes of on-line PD, defects are expected to appear in the neutral end of the winding. On the contrary, in the stator windings of the No.3 HV motor, which exhibits high off-line and on-line PD magnitude, defects are expected to appear in the terminal end of the winding where a voltage close to the phase voltage is applied.

The Effect of the Characteristics of Fabrics and Subjective Sensory Images on the Off-line and On-line Preferences of Women's Suit Fabrics

  • Kim, Hee-Sook;Na, Mi-Hee
    • International Journal of Human Ecology
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    • 제13권1호
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    • pp.105-115
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    • 2012
  • This research investigated the influences of structural characteristics such as fabrics, mechanical properties, and subjective sensory images on the off-line and on-line preferences to women's spring/summer suits fabrics to extract the most effective factor towards preference as well as analyze the preferential off-line and on-line differences to predict the exact texture image on-line. Objective evaluations were done for the measurement of the mechanical properties of fabrics using Kawabata's Evaluation System and subjective evaluations were done with 109 female subjects who value the off-line and on-line sensory image of suit fabrics. For statistical analysis, factor analysis, cluster analysis, t-test, ANOVA, and regression were used. The results were as follows. The preference scores on-line were generally higher than those off-line. For the structural characteristics of fabrics, differences of thickness were observed according to preference clusters, and the preference increased as thickness was lowered off-line and on-line. For mechanical properties, WC influenced off-line and on-line preferences. Fabrics with low compression energy were preferred; however, the effect of SMD was observed off-line only. In subjective sensory images, the 'smoothness' image influenced off-line and on-line preferences the most. All sensory images influenced the off-line preferences; however, the effects of 'flexibility' and 'weight' were not shown on-line.

On/Off-Line을 연계한 DM발송 시스템의 설계 및 구현 (Design and Implementation of a DM Service System Connected On/Off-Line)

  • 류언무;김광수;정한섭
    • 한국컴퓨터정보학회논문지
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    • 제7권3호
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    • pp.68-73
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    • 2002
  • 정보산업분야의 발전은 산업구조의 변화와 새로운 패러다임을 요구하는 시대로 변모하고 있다. Off-Line에서 처리하던 많은 내용들이 On-Line으로 변화의 조짐이 보이고 이러한 변화에 따라 많은 기업들이 연구와 투자가 지속적으로 이루어지고 있는 실정이다. 본 논문은 Off-Line에서만 처리되던 DM발송 시스템을 On/Off-Line의 연계를 이용하여 좀더 효율적으로 데이터를 관리할 수 있는 시스템을 제안하고자 DM발송 시스템을 설계 및 구현하였다.

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On-Line 및 OFF-Line 겸용 전자화폐 (Electronic Money for On-Line and Off-Line)

  • 황욱선;신창균
    • 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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    • 제8권3호
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    • pp.295-302
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    • 2002
  • 이 논문에서는 전자화폐 시스템 사용의 기술적인 문제점에 관한 몇가지 해결방안을 제안한다. 그 해결책은 온/오프 라인 겸용 전자화폐, 원카드, 주문형 시스템, 카드 대 카드 이체 시스템 등이다. 이 대안들이 엔젤플러스 전자화폐 사례에서 소스코드로 기술되었다. 전자화폐는 IC형과 네트워크형으로 분류 한다. 그러나 그들은 통합되어야 한다 최종사용자는 편리성을 위하여 겸용으로 사용되기를 원한다. 이 논문에서는 사례연구에 의하여 온/오프 라인 겸용 전자화폐를 개발한다. 이 논문을 바탕으로 미래연구에서는 소비자지향의 다양한 기능을 소유한 전자화폐 개발이 진행되어야 할 것이다.

수학 영재교육에 대한 일반 영재학생과 사이버 영재학생의 인식 분석 (Gifted Students' Perceptions of On-line and Off-line Gifted Education in Mathematics)

  • 황희숙;김말숙
    • 수산해양교육연구
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    • 제22권3호
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    • pp.316-329
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    • 2010
  • The purpose of this study was to examine how middle school students perceived the operation of on-line and off-line math-gifted education. The research questions were as follows: 1. How do students recognize the current situation concerning the operation of on-line and off-line gifted education? 2. How do students recognize the effect and satisfaction level of on-line and off-line gifted education? 3. How do students recognize the improvement of on-line and off-line gifted education? The subjects in this study were 591 students who included 208 in on-line classes and 383 in off-line classes. The results were as follows: First, the students who were enrolled in the on-line and off-line classes regarded gifted people as ones who had a superb ability in a particular field and as ones who think creatively. Second, all the students in on-line and off-line classes found gifted education to be of use to developing their potentials, and they had the biggest preference for experiential field study as the most effective teaching method. Third, concerning their needs for the management of gifted classes, they asked for immediate Q&A services over the Internet.

Comparative Experimental Research on Product Evaluations and Approach Behaviors of Utilitarian and Hedonic Clothing in On-line and Off-line Settings

  • Yoh, Eun-Ah
    • 한국의류학회지
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    • 제35권6호
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    • pp.635-645
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    • 2011
  • This study explores the differences in product evaluation and approach behaviors as well as the effects of product evaluation on approach behaviors of utilitarian and hedonic products in on-line and off-line settings. A total of 332 subjects participated in the experiments to assess product evaluation and approach behaviors for utilitarian and hedonic clothing products in on-line and off-line settings. The results show that even though the same stimulus was presented, consumers' product evaluation of utilitarian clothing (i.e., t-shirts) was higher in the off-line setting than in the on-line setting while the approach behavior of hedonic clothing was better in the on-line setting than in the off-line setting. In addition, color was a crucial factor generating positive approach behaviors for utilitarian clothing while style and quality were core factors influencing the approach behaviors of hedonic products in an on-line setting. There was no consistency in the results of the important factors affecting approach behaviors of utilitarian and hedonic clothing in an off-line setting. The conclusion suggests implications for marketing based upon the results of this study.

온/오프라인 호텔기업의 신뢰와 고객의 재구매의도에 관한 연구 (A Study of On/Off-line Trust on Customer's Repurchase Intention in Hotel Industry)

  • 민보영
    • 한국콘텐츠학회논문지
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    • 제9권8호
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    • pp.412-422
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    • 2009
  • 인터넷의 확산과 대중화로 인해 호텔을 직접 이용하는 고객들도 이미 쌓인 신뢰를 바탕으로 온라인상에서의 구매를 하고 있다. 객실뿐만 아니라 각종 연회 및 레스토랑 이용까지 온라인상에서의 구매 범위는 점차 확대되고 있다. 신뢰에 대한 연구는 1950년대 이후부터이며, 사회심리학이나 산업마케팅 분야에서도 이와 관련하여 다양한 연구가 이루어지고 있다. 그러나 온오프라인 기업의 관계와 고객의 재구매의도와의 관계에 대한 연구는 아직 시작 단계에 그치고 있다. 본 연구에서는 기존의 선행연구를 통해 정립된 이론을 바탕으로 도출된 연구모형과 가설을 검증함으로써, 고객들이 이미 오프라인 호텔기업대해 형성된 신뢰가 온라인 호텔기업을 이용하는 데도 관계가 있는지를 규명하고자 하며 온오프라인 호텔기업의 신뢰가 고객의 재구매 의도에 어떠한 영향을 미치는지를 알아보았다. 오프라인 호텔기업의 신뢰와 온라인 호텔기업 신뢰는 유의한 상관관계가 있는 것으로 나타났으며, 오프라인 호텔기업의 신뢰와 고객의 재구매의도도 유의한 상관성을 보였으나 온라인 호텔기업의 신뢰와 고객의 재구매의도와의 관계는 유의하지 않은 것으로 나타났다.

양수발전기 고정자 권선에서 운전중 및 정지중 부분방전 특성 (On-Line and Off-Line Partial Discharge Properties in the Pumped Storage Generator Stator Windings)

  • 김희동;주영호;윤대헌
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1999년도 하계학술대회 논문집 E
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    • pp.2089-2092
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    • 1999
  • Partial discharge(PD) tests were performed both when the pumped storage generator(rated 13.8kV and 220MVA) was on-line and off-line. This generator has been equipped with 12 bus coupler sensors in directional mode. PD tests were conducted using partial discharge analyzer(PDA), partial discharge meter(PDM) and digital partial discharge detector. PDA showed that the patterns of the normalized quantity number(NQN) and the partial discharge magnitude are in accord with on-line and off-line. The insulation condition was estimated by diagnostic tests(off-line) such as PD magnitude and dissipation factor.

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직물의 구조와 감각특성에 따른 온라인과 오프라인에서의 주관적 태평가 비교 (The Comparison of Subjective Evaluation of Band between On-line and Off-line by Structure and Sensibilities of Fabric)

  • 김희숙;조신현
    • 한국의류학회지
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    • 제31권1호
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    • pp.1-10
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    • 2007
  • This research was designed to compare the subjective evaluation of Hand between on- and off-line by structure and sensible characteristics of fabric. 113 subjects who have a fashion design major evaluated the subjective evaluation of Hand of various 16 kinds of specimens on- and off-line. T-test and pearson correlation coefficient were used for statistical analysis by SPSS WIN 11.0. The results of this study were as follows: The results of correlation analysis of the evaluation score indicated that Crash and Satin show high correlation between two kinds of evaluation score. But, fabrics which have distinct characteristics such as Plush, Dobby, Seersucker represented low correlation coefficient. The results of t-test fer the difference of the evaluation score showed that thin fabrics like Organdy represent a large difference between on- and off-line evaluation. On the other hand, twill weaved fabrics like Drill, Tweed, Saxony did not show many differences. Analysing each item in terms of correlation of evaluation of hand between on- and off-line gave results that the shininess was most deliverable through on-line and density and the dryness was not so deliverable through on-line. Comparison of evaluation score between on- and off-line items showed that the estimation to real fabric is more negative than that of on-line. The results of most preferable hand between on-and off-line showed exact opposite preference between shinny, smooth and soft Satin and rough, woolen Tweed. Organdy showed the most different subjective evaluation of hand in real ones compared with that of on-line.