• Title/Summary/Keyword: Distribution Information

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Model of Information Exchange for Decentralized Congestion Management

  • Song, Sung-Hwan;Jeong, Jae-Woo;Yoon, Yong-Tae;Moon, Seung-Il
    • Journal of Electrical Engineering and Technology
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    • v.7 no.2
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    • pp.141-150
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    • 2012
  • The present study examines an efficient congestion management system compatible with the evolving environment. The key is to build an information model shared and exchanged for marketbased solutions to alleviate congestion. Traditional methods for congestion management can be classified into two categories, i.e., the centralized scheme and the decentralized scheme, depending on the extent to which the independent system operator (ISO) is involved in market participants' (MPs) activities. Although the centralized scheme is more appropriate for providing reliable system operation and relieving congestion in near real-time, the decentralized scheme is preferred for supporting efficient market operation. The minimum set of information between the ISO and MPs for decentralized scheme is identified: i) congestion-based zone, ii) Power Transfer Distribution Factors, and iii) transmission congestion cost. The mathematical modeling of the proposed information is expressed, considering its process of making effective use of information. Numerical analysis is conducted to demonstrate both cost minimization from the MP perspective and the reliability enhancement from the ISO perspective based on the proposed information exchange scheme.

Development of the Road Weather Detection Algorithm on CCTV Video Images using Double Decision Trees (이중결정트리를 이용한 CCTV영상에서의 도로 날씨정보검출알고리즘 개발)

  • Park, Beung-Raul;NamKoong, Sung;Lim, Joong-Tae
    • The KIPS Transactions:PartB
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    • v.14B no.6
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    • pp.445-452
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    • 2007
  • We proposed a detection scheme of weather information in CCTV video images in this paper. The scheme obtains the RGB distribution of shiny day and divide a target image into cloud, rain, snow and for RGB distributions. shiny day RGB distribution. Our scheme designed systematically to detection and separation special characteristics of images from complex weather information. Our algorithm has less overhead than the previous methods to use weather database DB at the view of time and space. And our algorithm can be use in real world system with low cost of implementation. Also, our algorithm use informations of temperature, humidity, date, and time to detect the information of weather with high quality.

LGP Pattern Design by Using a Pattern Density Function with Simple Exponential Function (간단한 지수함수를 패턴 밀도 함수로 이용한 LGP 패턴 설계)

  • Kim, Young-Chul;Kim, Dae-Wook;Oh, Tae-Sik;Lee, Yong-Min;Ahn, Seung-Joon;Kim, Ho-Seob
    • Korean Journal of Optics and Photonics
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    • v.21 no.3
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    • pp.97-102
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    • 2010
  • A pattern density function using simulation analysis for controlling LGP output distribution was proposed. The pattern density function was found as [Pexp(-y/70)+Qexp(+y/25)]R. We analyzed the LGP output distribution of a hemi-sphere pattern using the function and then found that its output distribution was clearly improved as compared with that of the equi-distance pattern. We found that the density function works well for the pyramid pattern case as well as.

Improving The Security Of Quantum Key Distribution And Quantum Authentication By Using CHSH Inequality (CHSH 부등식을 이용하여 양자 키 분배와 양자 인증의 안전성을 개선한 프로토콜)

  • Heo, Jin-O;Hong, Chang-Ho;Lim, Jong-In;Yang, Hyoung-Jin
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.18 no.4
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    • pp.69-78
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    • 2008
  • We propose to analyze a weakness of quantum key distribution and quantum authentication which use entangled state were proposed by Bao-sen Shi(2001) and to improve the security of the protocol. The existing protocol had a weakness against an impersonation attack of an eavesdropper, because of a only process which authenticated a third party(Center) by users. In this paper, we propose improving the security of the protocol that authenticates users by a third party using check mode which applies CHSH inequality.

Study on the Standardization of Korean Distribution Terminology through its Usage Survey (유통분야 전문용어 사용실태 조사를 통한 용어 표준화 연구)

  • Han, Kyu-Chul;Lee, Sang-Youn
    • Journal of Distribution Science
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    • v.13 no.4
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    • pp.77-87
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    • 2015
  • Purpose - This study aims to investigate the current state of distribution terminology usage by retailers and consumers nationwide, and to suggest a practical improvement plan for its standardization. The Korean distribution industry is closely related to consumers' daily lives. However, in reality, there exists a gap among producers, distributors, and consumers in terms of the definition, understanding, and perception of the terminology. Therefore, standardizing this terminology is essential for more smooth communication. This paper suggests the necessity of committing overall research and survey activities to the actual conditions of using Korean distribution terminology by organizations and their respective management situations, and further, the necessity of probing the problem and its measures in line with the objective and mission of the "Fundamental Law of the Korean Language." Research design, data, and methodology - This study's scope is limited to wholesale and retail including some information systems. First, the study covers most written material including lexicons and glossary of distribution terminology, university textbooks and teaching material for national certificate of qualification, and related laws and ordinances. Second, the survey covers retailers' management situations by store format. The retailers used as the sample for the survey include department stores, discount stores, SSM, and convenience stores. Altogether, 20 specialists were interviewed in their respective sectors or retail formats. Finally, the project team surveyed a sample of 1,300 consumers nationwide on 50 distribution terms mainly used by consumers, including those about awareness, understanding, usage, and attitude. Results - In total, 1,249 terms are drawn through literature research including distribution terminology used in the related literature, glossary and lexicons, distribution terminology in textbooks, and legal terminology. A classified table comprises four large categories including general distribution, distribution marketing, distribution information, and merchandise. The results of the three-step research including literature survey, field survey of retailers, and consumer survey were advised to be screened by academia (retail associations, faculty etc.), retailers (major retail management by store format), retail specialists and consultants, consumers, and Korean linguists. In total, 1,300 questionnaires for 50 terms of the distribution terminology closely associated with consumers were distributed to subjects nationwide. Conclusions - The desired and expected results from this study are summarized from three perspectives as follows: First, from retailers' perspective, a new concept, or coinage of new terms of the distribution industry stems from advanced countries such as America and Europe. However, the original meaning and definition are diluted and distorted with changes in the language users' situations and context. This study provides basic guidelines for standardization of distribution terms used among various retail formats in most daily life situations that consumers encounter. Second, from the nation's perspective, this study suggests optimal choices of distribution terminology in the context of laws and ordinances regarding concerned Ministries. Last, from the consumers' perspective, this paper enables consumers to understand and use distribution terms properly in their daily life.

Analysis of the performance of supply chain partnership based on information sharing and lead-time distribution (정보공유와 리드타임 분포를 바탕으로 한 파트너쉽이 공급사슬 성능에 미치는 영향에 관한 연구)

  • 박국흠;김기범;정봉주
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2003.11a
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    • pp.342-345
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    • 2003
  • Due to the rapid development of manufacturing and information technology, traditional supply chain scheme has been changed dramatically Most companies have been forced to relocate or redesign their logistics network in different countries. A supply chain partnership is a relationship formed between two independent members in supply chain through information sharing to achieve specific objectives and benefits in terms of reductions in total costs and inventories. This study illustrates the benefits of supply chain partnerships based on information sharing and lead-time patterns. We consider three level of information sharing: (1) immediate order information; (2) demand information; (3) inventory information. Given a fixed total lead-time, how lead-time distribution will affect the bullwhip effect and inventory cost under information sharing strategies. The results can help improving supply chain performance and selecting suitable direction for the re-configuration of supply chain network.

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A Study on the Integrated Model Design and Circulation of the Customer Information for Electricity Market Competition (전력시장 공정경쟁을 위한 소비자정보 통합 모델 설계 및 유통에 관한 연구)

  • Ko, Jong-Min;Park, Sang-Hoo;Noh, Jae-Koo;Kim, Young-Il;Choi, Seong-Hwan
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.60 no.9
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    • pp.1668-1673
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    • 2011
  • Recent power industries are to be progressed as moving into horizontal markets and expanding of competitive systems through promoting SmartGrid. In these environments, the information on power consumers leads to establish a part of power markets through active and real-time participations instead of participating it as a passive manner presented by a vertical integration. Also, such information should be established as a way that effectively reflects changes and market behaviors occurred in power market participants. Therefore, in this study, a method that develops consumer information models, performs integrated managements, implements registration and distribution, and forms integrated management centers is presented to commonly use the consumer information according to the change in the environment of power industries.

An Adaptive JPEG Steganographic Method Based on Weight Distribution for Embedding Costs

  • Sun, Yi;Tang, Guangming;Bian, Yuan;Xu, Xiaoyu
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.11 no.5
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    • pp.2723-2740
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    • 2017
  • Steganographic schemes which are based on minimizing an additive distortion function defined the overall impacts after embedding as the sum of embedding costs for individual image element. However, mutual impacts during embedding are often ignored. In this paper, an adaptive JPEG steganographic method based on weight distribution for embedding costs is proposed. The method takes mutual impacts during embedding in consideration. Firstly, an analysis is made about the factors that affect embedding fluctuations among JPEG coefficients. Then the Distortion Update Strategy (DUS) of updating the distortion costs is proposed, enabling to dynamically update the embedding costs group by group. At last, a kind of adaptive JPEG steganographic algorithm is designed combining with the update strategy and well-known additive distortion function. The experimental result illustrates that the proposed algorithm gains a superior performance in the fight against the current state-of-the-art steganalyzers with high-dimensional features.

Validation of the Detailed Design of the Label Distribution Protocol for the Multiprotocol Label Switching System (Multiprotocol Label Switching System의 Label Distribution Protocol 상세설계 검증)

  • 박재현
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.26 no.5A
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    • pp.889-901
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    • 2001
  • 본 논문에서 Multiprotocol Label Switching 시스템을 위한 Label Distribution Protocol의 개발과 분석에 관해서 기술한다. 먼저 Gigabit Switched Router를 만들기 위해서, 상용화시 Carrier Class 제품에 적용하기 위한 LDP의 구현시 고려해야 될 사항에 대해 살피고, 상세 설계를 제안한다. IETF 표준에 의거한 LDP의 구현을 위한 상세 설계는 프로토콜 상태기계의 유도 트리와 프로세스 대수를 사용한 형식적 명세를 사용하여 제시한다. 본 논문에서는 제시된 유도트리와 프로세스 대수를 사용한 프로토콜 동작의 분석을 통해, 구현된 LDP의 상호 연동성과 완전성, 생존성, 도달성, 안전성을 검증한다. 또한 이를 사용하여 구현된 LDP가 기존 상용 제품들과의 연동성과 그 동작의 신뢰성을 확보할 것을 기대한다. 결과적으로 구현된 LDP의 프로토콜 동작들의 검증을 제공한다.

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A Study on the Voltage Sag During the EVs Charging Considering Domestic Data (국내 데이터를 고려한 전기 자동차 충전 시 순시전압강하에 관한 연구)

  • Go, Hyo-Sang;Kim, Jun-Hyeok;Kim, Eung-Sang;Kim, Chul-Hwan
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.29 no.1
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    • pp.37-46
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    • 2015
  • In order to charge EVs, they have to be connected to distribution system. Therefore, if unprecedented numbers of EVs are connected to power systems, it could result in deterioration of power quality, overload, and other system problems. In this paper, the effects of voltage sag on the distribution system due to the connection of EVs is evaluated by considering related field data of Republic of Korea such as the number of gasoline-fueled vehicles, seasonal load of power system and the monthly and daily real-time traffic volume. The distribution system and EVs are modeled using the Electro Magnetic Transients Program (EMTP).