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Proceedings. Student Conference on Research and Development, 2003. SCORED 2003.最新文献

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The evaluation of optimal output buffer size and shared buffer size in partially shared buffering for packet switching architecture 分组交换体系结构中部分共享缓冲中最优输出缓冲区大小和共享缓冲区大小的评估
Proceedings. Student Conference on Research and Development, 2003. SCORED 2003. Pub Date : 2003-08-25 DOI: 10.1109/SCORED.2003.1459678
N. Kitsuwan, C. Srikoon, S. Noppanakeepong
{"title":"The evaluation of optimal output buffer size and shared buffer size in partially shared buffering for packet switching architecture","authors":"N. Kitsuwan, C. Srikoon, S. Noppanakeepong","doi":"10.1109/SCORED.2003.1459678","DOIUrl":"https://doi.org/10.1109/SCORED.2003.1459678","url":null,"abstract":"This paper concerns finding optimal buffer size in shared buffering using raising rate of packet loss probability and mean delay called percentage of packet loss probability and approximate percentage relative delay respectively. This can reduce the cost and complexity of the system and can reach to the appropriate waiting time while packet loss still good.","PeriodicalId":239300,"journal":{"name":"Proceedings. Student Conference on Research and Development, 2003. SCORED 2003.","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125813062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lighting management system 照明管理系统
Proceedings. Student Conference on Research and Development, 2003. SCORED 2003. Pub Date : 2003-08-25 DOI: 10.1109/SCORED.2003.1459712
M. Hassan, M. Mustafa., Ikmal Arif Abd Jalal
{"title":"Lighting management system","authors":"M. Hassan, M. Mustafa., Ikmal Arif Abd Jalal","doi":"10.1109/SCORED.2003.1459712","DOIUrl":"https://doi.org/10.1109/SCORED.2003.1459712","url":null,"abstract":"The development of smart lighting management system is outgrowing nowadays. The main purpose is to make lighting controls easily accessible which enables residents to make the best use of a lighting design. Selecting technologies and using them effectively is a true challenge. This project chooses lighting control, as light is the primary electrical appliance used in a house. One main switch panel has been developed where we can control all the lights in the house from different places. The developed switch panel gives convenience to users especially in time consuming. One could easily control and monitor the light in one place at one time, without going to every room to check. Panel switch is built with minimum buttons, which is user friendly, and it is easily accessed. The control system is equipped with infrared remote control that enables us easy access of the control lights, barely using any effort or energy, physically. The remote control system maximizes the usage of infrared. To on or off the light, one only needs to move his/her hand and points the available remote to the selected light. Any remote control can be used as the system works due to the steps specified. This system is convenient and helpful to unable person such as elderly or disabled.","PeriodicalId":239300,"journal":{"name":"Proceedings. Student Conference on Research and Development, 2003. SCORED 2003.","volume":"42 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126071690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
A GUI based per-unit representation of power system with symmetrical components: an e-learning approach 基于图形用户界面的对称组件电力系统单位表示法：一种电子学习方法
Proceedings. Student Conference on Research and Development, 2003. SCORED 2003. Pub Date : 2003-08-25 DOI: 10.1109/SCORED.2003.1459702
M. Sulaiman, Z. M. Isa
{"title":"A GUI based per-unit representation of power system with symmetrical components: an e-learning approach","authors":"M. Sulaiman, Z. M. Isa","doi":"10.1109/SCORED.2003.1459702","DOIUrl":"https://doi.org/10.1109/SCORED.2003.1459702","url":null,"abstract":"Every textbook on power system analysis discusses the per-unit system, varying in depth with problems and solutions. However, it is still not an interactive method for teaching and learning the per-unit representation. Thus, it needs a new approach to make teaching and learning process more interactive and interesting for students. The graphical user interface (GUI) provides the user with interactive visual communication to analyze the power systems. This paper presents the GUI based per-unit representation of power systems with symmetrical components in the visual basic (VB) environment. The software allows the user to draw the single line diagram representing the power system with ratings of each component. This GUI based per-unit system is developed for the teaching and learning environment of the power system analysis. The user can make use of this interactive software to calculate the per-unit impedance with respect to the system common MVA base. The reactance diagram of the three sequence impedances, namely, the zero-, positive-, and negative- sequence impedances, can be drawn either manually or automatically. It is hoped that this GUI software will enhance the learning process and make it more interactive, interesting and user friendly.","PeriodicalId":239300,"journal":{"name":"Proceedings. Student Conference on Research and Development, 2003. SCORED 2003.","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126722434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Simulation of single dual-band perturbed printed antenna 单双波段扰动印刷天线仿真
Proceedings. Student Conference on Research and Development, 2003. SCORED 2003. Pub Date : 2003-08-25 DOI: 10.1109/SCORED.2003.1459675
Mona Riza Mohd Esa, M. Ismail
{"title":"Simulation of single dual-band perturbed printed antenna","authors":"Mona Riza Mohd Esa, M. Ismail","doi":"10.1109/SCORED.2003.1459675","DOIUrl":"https://doi.org/10.1109/SCORED.2003.1459675","url":null,"abstract":"A single dual band rectangular microstrip antenna operating at L-band has been successfully designed and simulated. The design procedure starts from the formulation for the width dimension of the microstrip antenna. Upon achieving the most appropriate antenna width, the design proceeds to determining the most appropriate antenna length. The designed antenna is then simulated using a full wave electromagnetic simulation software. Analysis of one port characteristics is carried out on the designed antennas. The performance focuses on the return loss, input impedance, voltage standing wave ratio, current distribution and charge distribution. The designed antenna is then simulated with perturbed structures introduced. It is found that the antenna is well matched at its corresponding frequency of operations.","PeriodicalId":239300,"journal":{"name":"Proceedings. Student Conference on Research and Development, 2003. SCORED 2003.","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132099645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
GPRS location update performance using dynamic counter 使用动态计数器的GPRS位置更新性能
Proceedings. Student Conference on Research and Development, 2003. SCORED 2003. Pub Date : 2003-08-25 DOI: 10.1109/SCORED.2003.1459680
M. Krishnan, M. Ismail
{"title":"GPRS location update performance using dynamic counter","authors":"M. Krishnan, M. Ismail","doi":"10.1109/SCORED.2003.1459680","DOIUrl":"https://doi.org/10.1109/SCORED.2003.1459680","url":null,"abstract":"The increasing population of mobile users leads to congestion problems and motivates the development of more efficient resource management schemes to be use in next generation wireless system. Location management enables the network to track the locations of users and their terminals between call arrivals. The operation of informing the network about the current location of the mobile user is known as location update. A READY timer (RT) mechanism was proposed in 3GPP 23.060 to determine when MS ready to switch from cell tracking to RA tracking. The main idea of location updation is to reduce the unnecessary location update and paging cost. We propose a dynamic counter mechanism to reduce the location update and paging cost in this system. The updation takes place only when the mobile moves to the new routing area (RA). A simulator based on Matlab, which can study the location updation performance, and signalling activities was developed. Initial result shows that the average location updation could be reduced by using dynamic counter.","PeriodicalId":239300,"journal":{"name":"Proceedings. Student Conference on Research and Development, 2003. SCORED 2003.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128644163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Performance of multiuser detection combining with multicarrier on Nakagami fading channels for DS/CDMA transmission systems DS/CDMA传输系统中agami衰落信道多用户检测与多载波结合性能研究
Proceedings. Student Conference on Research and Development, 2003. SCORED 2003. Pub Date : 2003-08-25 DOI: 10.1109/SCORED.2003.1459713
A. Kothiram, T. Sirimak, S. Sittichivapak
{"title":"Performance of multiuser detection combining with multicarrier on Nakagami fading channels for DS/CDMA transmission systems","authors":"A. Kothiram, T. Sirimak, S. Sittichivapak","doi":"10.1109/SCORED.2003.1459713","DOIUrl":"https://doi.org/10.1109/SCORED.2003.1459713","url":null,"abstract":"This paper combines multiuser detection and multicarrier signaling technique for direct sequence code division multiple access system (DS/CDMA). These techniques are analyzed in multipath fading environment. The receiver provides a decorrelating detector for each carrier and the outputs of the correlators are combined with a maximal-ratio combiner. The system performance is evaluated over Nakagami fading channels in the presence of partial band interference with numerical method. The system performance of multiuser detection combining multi-carrier DS/CDMA with the conventional single-carrier decorrelating detector was also compared.","PeriodicalId":239300,"journal":{"name":"Proceedings. Student Conference on Research and Development, 2003. SCORED 2003.","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128109754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Determining harmonic characteristics of typical single phase non-linear loads 确定典型单相非线性负载的谐波特性
Proceedings. Student Conference on Research and Development, 2003. SCORED 2003. Pub Date : 2003-08-25 DOI: 10.1109/SCORED.2003.1459733
K. Umeh, A. Mohamed, R. Mohamed
{"title":"Determining harmonic characteristics of typical single phase non-linear loads","authors":"K. Umeh, A. Mohamed, R. Mohamed","doi":"10.1109/SCORED.2003.1459733","DOIUrl":"https://doi.org/10.1109/SCORED.2003.1459733","url":null,"abstract":"Harmonic distortion in typical commercial office buildings is growing due to the widespread use of single phase nonlinear loads. This paper presents a method for developing various non-linear load models so as to analyze the current harmonic waveform characteristics of these loads. The electromagnetic transient simulation program (PSCAD/EMTDC) was used in modeling some of the non-linear loads such as personal computers, uninterruptible power supply and fluorescent lamp with electronic ballast. Simulation results provide the estimate of the harmonic currents in terms of the total harmonic distortion and the individual harmonic current components. The results obtained from simulations are then verified by the experimental results.","PeriodicalId":239300,"journal":{"name":"Proceedings. Student Conference on Research and Development, 2003. SCORED 2003.","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130012487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Analysis performance of L-PPM infrared wireless communications for indoor LOS and diffuse links L-PPM红外无线通信的室内LOS和漫射链路性能分析
Proceedings. Student Conference on Research and Development, 2003. SCORED 2003. Pub Date : 2003-08-25 DOI: 10.1109/SCORED.2003.1459668
J. Sartthong, S. Wonghoon, S. Noppanakeepong, A. Manyanon
{"title":"Analysis performance of L-PPM infrared wireless communications for indoor LOS and diffuse links","authors":"J. Sartthong, S. Wonghoon, S. Noppanakeepong, A. Manyanon","doi":"10.1109/SCORED.2003.1459668","DOIUrl":"https://doi.org/10.1109/SCORED.2003.1459668","url":null,"abstract":"In this paper, we present the efficiency and performance of pulse position modulation (L-PPM) for indoor wireless infrared communication system. By physical characteristic of infrared channels using intensity modulation with direct detection (IM/DD). Noise in the channel is considered as additive white Gaussian noise. We evaluate power and bandwidth efficiency compared with on off keying (OOK). We have computed the path loss versus horizontal separation between transmitter and receiver in LOS and diffuse link, and our results show the best average power efficiency among the modulation techniques, which are presented for 2, 4, 8, 16, 32, and 64 PPM at bit rates of 10 Mb/s to 100 Mb/s. Finally, we present Monte Carlo simulation results to bit error probability and the best signal to noise ratio that L-pulse position modulation requirement.","PeriodicalId":239300,"journal":{"name":"Proceedings. Student Conference on Research and Development, 2003. SCORED 2003.","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114478551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Design and operation considerations for energy conservation in process industries 过程工业节能的设计和运行考虑
Proceedings. Student Conference on Research and Development, 2003. SCORED 2003. Pub Date : 2003-08-25 DOI: 10.1109/SCORED.2003.1459704
A. Sundaram
{"title":"Design and operation considerations for energy conservation in process industries","authors":"A. Sundaram","doi":"10.1109/SCORED.2003.1459704","DOIUrl":"https://doi.org/10.1109/SCORED.2003.1459704","url":null,"abstract":"In the changing face of the business environment, industries often walk the extra mile to keep the production costs to a bare minimum. Process industries such as petrochemical, pharmaceutical and semiconductor industries have shown that by doing minor alterations in the design stage and the operation of the process industries, a big impact can be achieved in the bottom line of the company's performance. This paper attempts to consolidate die various energy saving techniques that can be used both in a) design of new process industries: layout of plant, load centers like the chillers, cooling towers and boilers, piping arrangements, motor sizing and the importance of the parallel operation of loads and variable speed drives. B) method of operation: selecting the optimum running combination of loads, determining the number of pumps required to meet a certain demand in the industry. Finally the paper spells out a procedure for \"daily tracking of the energy costs\" in industry by means of a simple Excel spread sheet that can be used by the managers to keep track of the utility costs thus effectively controlling the company's profitability.","PeriodicalId":239300,"journal":{"name":"Proceedings. Student Conference on Research and Development, 2003. SCORED 2003.","volume":"284 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131833483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
SDH radio routes backup in Thailand 泰国SDH无线电线路备份
Proceedings. Student Conference on Research and Development, 2003. SCORED 2003. Pub Date : 2003-08-25 DOI: 10.1109/SCORED.2003.1459676
A. Chaisang, J. Ramangkool, A. Wicheinsan, S. Nopnakeepong, N. Hemakorn
{"title":"SDH radio routes backup in Thailand","authors":"A. Chaisang, J. Ramangkool, A. Wicheinsan, S. Nopnakeepong, N. Hemakorn","doi":"10.1109/SCORED.2003.1459676","DOIUrl":"https://doi.org/10.1109/SCORED.2003.1459676","url":null,"abstract":"The new SDH network in Thailand is an integrated network, where different media such as OFC and radio relay is used to transmit the SDH payloads. This article describes the SDH radio route characteristics and performance such as route map. The radio system use 128 QAM modulations with upper 6 GHz band, 40 MHz channel spacing for STM-1 signal. The channel arrangement is in accordance with Rec. ITU-R F384-6. Baseband interfaces inclusive the SOH processing has to be considered for STM-1 signals in accordance with Rec. ITU-R F,750-3. The system performance objectives is based on the rec. TU-RF.11891 and rec. ITU-T G.826.","PeriodicalId":239300,"journal":{"name":"Proceedings. Student Conference on Research and Development, 2003. SCORED 2003.","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128419006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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