• Title/Summary/Keyword: 호네트

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A New LED Light Device Lighting Control Algorithm for Optimal Energy Saving (최적의 에너지 효율을 위한 새로운 LED 조명기기 점등제어 알고리즘)

  • In, Chi-Goog;Hong, Sung-Il;Chang, Jeong-Uk;Lin, Chi-Ho
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.12 no.6
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    • pp.17-23
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    • 2012
  • In this paper, we were proposed a new LED light device lighting control algorithm for optimal energy saving. The propose lighting control algorithm be to the LED lights devices lighting control by measuring illuminance into multi sensors. And it be to lighting control by inverting of octagon pattern during set-up time. All the LED is lighting when detecting motion by the motion sensor. And, it was designed enable remote management control by communicate with central monitoring center using Zigbee wireless network to measured data from sensors at real time. In this paper, a proposed lighting control algorithm was measured power consumption about the lighting status of LED lighting device using the lighting control program for demonstrate of energy savings effect. The measured result, the lighting method applying proposed algorithm were proved energy savings effect of more 40% more compared to the existing lighting method.

Petri nets modeling and dynamic scheduling for the back-end line in semiconductor manufacturing (반도체 후공정 라인의 페트리 네트 모델링과 동적 스케쥴링)

  • Jang, Seok-Ho;Hwang, U-Guk;Park, Seung-Gyu;Go, Taek-Beom;Gu, Yeong-Mo;U, Gwang-Bang
    • Journal of Institute of Control, Robotics and Systems
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    • v.5 no.6
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    • pp.724-733
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    • 1999
  • An effective method of system modeling and dynamic scheduling for the back-end line of semiconductor manufacturing is proposed. The virtual factory, describing semiconductor manufacturing line, is designed in detail, and then a Petri net model simulator is developed for operation and control of the modular cells of the virtual factory. The petri net model is a colored timed Petri nets (CTPNs). The simulator will be utilized to analyze and evaluate various dynamic status and operatons of manufacturing environments. The dynamic schedulaer has a hierarchical structure with the higher for planning level and the lower for dynamic scheduling level. The genetic algorithm is applied to extract optimal conditions of the scheduling algorithm. The proposed dynamic scheduling is able to realize the semiconductor manufacturing environments for the diversity of products, the variety of orders by many customers, the flexibility of order change by changing market conditions, the complexity of manufacturing processes, and the uncertainty of manufacturing resources. The proposed method of dynamic scheduling is more effective and useful in dealing with such recent pressing requirements including on-time delivery, quick response, and flexibility.

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Design of an USB Security Framework for Double Use Detection (이중사용 방지를 위한 USB 보안 프레임워크의 설계)

  • Jeong, Yoon-Su;Lee, Sang-Ho
    • Journal of the Korea Society of Computer and Information
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    • v.16 no.4
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    • pp.93-99
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    • 2011
  • Recently, the development of internet technology makes user's personal data used by being saved in USB. But there is a critical issue that personal data can be exposed with malicious purpose because that personal data doesn't need to be certificate to use. This paper proposes USB security framework to prevent a duplicate use of personal data for protecting the data which in USB. The proposed USB security framework performs certification process of user with additional 4bite of user's identification data and usage choice of USB security token before certification data when the framework uses USB security product in different network. It makes communication overhead and service delay increased. As a result of the experiment, packet certification delay time is more increased by average 7.6% in the proposed USB security framework than simple USB driver and USB Token, and procedure rate of certification server on the number of USB is also increased by average 9.8%.

Throughput Analysis of Non-Transparent Mode in IEEE 802.16j Mobile Multi-Hop Relay Networks (IEEE 802.16j MMR 네트워크에서 Non-Transparent 중계모드의 전송률 분석)

  • Lee, Ju-Ho;Lee, Goo-Yeon;Jeong, Choong-Kyo
    • Journal of the Korea Society for Simulation
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    • v.21 no.2
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    • pp.51-58
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    • 2012
  • In IEEE 802.16j MMR protocol, two modes about usage of RS are proposed; one is transparent mode to enhance data throughput and the other is non-transparent mode to extend coverage. In this paper, we focus on non-transparent mode and find that the mode can also improve data throughput. Therefore, we analyze data throughput on various RS topology and their extended coverage area by simulation in IEEE 802.16j non-transparent mode. We also compare the simulation results with the single MR-BS system of which coverage is extended by higher transmission power. From the comparisons of simulation results, we see that higher throughput can be obtained in the proposed non-transparent mode.

Distribution of the Common Squid Todarodes pacificus Paralavae in the Southern Coastal Waters in the East Sea in August and September 2013 (2013년 8월, 9월 동해 남부연안 살오징어 유생 분포)

  • Kim, Yoon-Ha;Moon, Chang-Ho;Lee, Chung Il
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.19 no.3
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    • pp.215-222
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    • 2014
  • Paralarvae of the common squid, Todarodes pacificus Steenstrup were sampled with the bongo net (diameter: 60 cm, mesh: 333μm) by using oblique tow method with the oceanographic research vessel (Tamgu 12) at 21 stations along the southwestern coastal waters of the East Sea in August and September, 2013. Paralarvae were collected 16 ind./10m3 in August and 7 ind./10m3 in September at approximately, and bottom depth was from 70 m to 500 m. Mantle length of paralarvae was from 1.7 to 6.0 mm. Paralavae were distributed mainly in offshore stations in August and near by Cape Janggi in September. Optimum embryo survival temperature (1824C) was formed shallower than 35 m depth for almost stations where paralarvae were existed, and survival temperature (1524C) for embryo stage was located shallower than 75 m.

An Energy-Efficient In-Network Join Query Processing using Synopsis and Encoding in Sensor Network (센서 네트워크에서 시놉시스와 인코딩을 이용한 에너지 효율적인 인-네트워크 조인 질의 처리)

  • Yeo, Myung-Ho;Jang, Yong-Jin;Kim, Hyun-Ju;Yoo, Jae-Soo
    • The Journal of the Korea Contents Association
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    • v.11 no.2
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    • pp.126-134
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    • 2011
  • Recently, many researchers are interested in using join queries to correlate sensor readings stored in different regions. In the conventional algorithm, the preliminary join coordinator collects the synopsis from sensor nodes and determines a set of sensor readings that are required for processing the join query. Then, the base station collects only a part of sensor readings instead of whole readings and performs the final join process. However, it has a problem that incurs communication overhead for processing the preliminary join. In this paper, we propose a novel energy-efficient in-network join scheme that solves such a problem. The proposed scheme determines a preliminary join coordinator located to minimize the communication cost for the preliminary join. The coordinator prunes data that do not contribute to the join result and performs the compression of sensor readings in the early stage of the join processing. Therefore, the base station just collects a part of compressed sensor readings with the decompression table and determines the join result from them. In the result, the proposed scheme reduces communication costs for the preliminary join processing and prolongs the network lifetime.

A Study on Implementation of XForm Editor based on XForm Standard (XForm 표준에 근거 한 XForm 저작기 개발에 관한 연구)

  • Choi Kyoung-Ho;Hyen Deuk-Chang;Shin Ye-Ho
    • Journal of the Korea Computer Industry Society
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    • v.7 no.3
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    • pp.135-144
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    • 2006
  • According th expansion of computer technology and fast spread of network today, change is accelerated to electronic filing document in information carrier that use existent paper. Accord ingly, it became very important issue that create electronic filing document, and manage information that is included to electronic filing document. XML is expected to act important role in electronic commerce, electronic library, construction of point application system of imagination college and so on furthermore as well as can be complicated in Internet and ease storage of structured document data, administration, search. It is not easy work that peon makes out this XML document. This dissertation is research about edit method to make out XML document as more easy and convenient. Introduced concept that input XML document using document form for this, and separated input process by process and process that make out actuality XML document using made XML document form that make XML document form. Such detached input method can improve efficiency of XML input because can input easily XML document if use XML document form that offer input person who do not know well about XML specialist or system.

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A Study on the Application Technique of Realtime Bridge Monitoring System based on GNSS (GNSS 기반의 실시간 교량변위 모니터링 시스템 적용기술 연구)

  • Yeon, Sang-Ho
    • The Journal of the Korea Contents Association
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    • v.16 no.1
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    • pp.362-369
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    • 2016
  • Recently, Last to check the security status of various medium and large bridge structures using various kinds of measurement equipment, but most of the methods are used to measure and check the displacement behavior of the bridge by a certain period. In this study, receive GPS satellite signals that can be observed in real time the whole region, a bridge to automatically measure the displacement and behavior characteristics of the structure in real-time in mm over the 24 hours, the measurement information and transmits the data to the wireless network, by making use, it was applied to the real-time monitoring system in connection with a bridge to be able to automatically notify GNSS fine displacement behavior. In fact, analysis and receives the measurement data to GNSS provided in the upper bridge of the middle and large-sized aging for this purpose, measuring USN and at the same time is converted into a three-dimensional position information of a test study was conducted to monitor the bridge displacement in real time. As a result, a vertical displacement of about 0.027~0.037m at the measurement time of day of the measurement point is that the repeated and confirmed.

Efficient Fault-Tolerant Conference-Key Agreement using ID-based One Round Tripartite Key Agreement Protocol (아이디 기반의 일 라운드 삼자 간 키 합의 프로토콜을 이용한 효율적인 결함 허용 회의 키 합의 방법)

  • Lee, Sang-Ho;Kim, Jong;Hong, Sung-Je
    • Journal of KIISE:Computing Practices and Letters
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    • v.14 no.5
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    • pp.512-516
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    • 2008
  • A conference-key agreement protocol is essential for computer network conferences that need secure communications. Especially, the fault-tolerant conference-key agreement can make a shared conference-key even if some make conferees disturb the key agreement processes. However, the performance of the previous fault-tolerant conference-key agreement protocols is decreasing significantly when the number of fake conferees is increasing. In this paper, we propose an efficient fault-tolerant conference key agreement protocol. Our scheme is based on the ID-based one round tripartite conference key agreement protocol. Simulation results show our scheme's efficiency against Yi's method especially when the number of fake conferees is large.

Development of Information Strategy Planning Supporting Template for IMS (IMS를 위한 정보화 전략계획 수립지원 Template 개발)

  • 최병욱;이영수;장석호;윤취영
    • Proceedings of the CALSEC Conference
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    • 2002.01a
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    • pp.107-131
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    • 2002
  • Recently, it is an important problem that combines part of sale, technical development etc.. as well as function that is the multi-item and small quantity production environment and production to computer network that supports synthetic efficiency of general corporation activity in manufacturing industry. Integration production information system is developed by these requests and globalization of production system and marketing by tough international competition of various industry product need IMS(Intelligent Manufacturing System) that cope in these change. Therefore, this paper searches analysis method, problem and development way for information system of manufacture field to construct this IMS efficiently, and develops each information strategy planning establishment step, product and integral way of products which is the systematic establishment way of essential information strategy planning in efficient manufacturing information system construction. Also, this paper presents detailed system design methods of each step and templates for efficient methodology of information strategy planning to support IMS efficiently.

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