Pub Date : 2004-09-05DOI: 10.1109/ICEEC.2004.1374625
A. Sharaf, Guosheng Wang
High Impedance Arc-Type Faults (HIF) on Meshed Electrical DistributiodUtilization networks are characterized by an intermittent Arc-type nature and low-level of the fault currents. The detection of low-level ground-currents using any conventional over-current or ground fault type relays is both difficult and sometimes inaccurate. [ 1-71. The Arc-nature of all (HIF) faults, being intermittent in nature, characterized by very low level fault current is also rich in low harmonic content and high frequency noise spectra that identify and fingerprint any existence of Arc hazardous HIF faults. High Impedance Arc-Type faults are safety hazard to Humans, Live stocks and Electric Utility Personnel. If left undetected for hours, weeks, and possibly months can prove fatal to humans and animals at typical current level of 50 milliampere or above. The need to find a simple, fast and accurate detection scheme using only time domain substation voltage and current signals (few cycles) at the feeder is the motivation for this novel Pattendshape Based Recognition and Identification approach. Other techniques by the first author [8-101 encompass Neutral Residual harmonics, excursion harmonic-vector, frequency-based nonlinear transformations, Artificial Neural Network and this new concept of the Harmonic PattemsPhase Portraits (HPP-Concept) introduced in this paper. Other detection algorithms are based on Fourier Transform and search methods [I I].
{"title":"High impedence fault detection using low - order pattern harmonic detection","authors":"A. Sharaf, Guosheng Wang","doi":"10.1109/ICEEC.2004.1374625","DOIUrl":"https://doi.org/10.1109/ICEEC.2004.1374625","url":null,"abstract":"High Impedance Arc-Type Faults (HIF) on Meshed Electrical DistributiodUtilization networks are characterized by an intermittent Arc-type nature and low-level of the fault currents. The detection of low-level ground-currents using any conventional over-current or ground fault type relays is both difficult and sometimes inaccurate. [ 1-71. The Arc-nature of all (HIF) faults, being intermittent in nature, characterized by very low level fault current is also rich in low harmonic content and high frequency noise spectra that identify and fingerprint any existence of Arc hazardous HIF faults. High Impedance Arc-Type faults are safety hazard to Humans, Live stocks and Electric Utility Personnel. If left undetected for hours, weeks, and possibly months can prove fatal to humans and animals at typical current level of 50 milliampere or above. The need to find a simple, fast and accurate detection scheme using only time domain substation voltage and current signals (few cycles) at the feeder is the motivation for this novel Pattendshape Based Recognition and Identification approach. Other techniques by the first author [8-101 encompass Neutral Residual harmonics, excursion harmonic-vector, frequency-based nonlinear transformations, Artificial Neural Network and this new concept of the Harmonic PattemsPhase Portraits (HPP-Concept) introduced in this paper. Other detection algorithms are based on Fourier Transform and search methods [I I].","PeriodicalId":180043,"journal":{"name":"International Conference on Electrical, Electronic and Computer Engineering, 2004. ICEEC '04.","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123862622","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}
Pub Date : 2004-09-05DOI: 10.1109/ICEEC.2004.1374460
M.A. Abu-Elsoud, F. Abou-Chadi, A. M. Amin, M. Mahana
An automatic system has been developed to classijj the seismic events in the Suez Gulf area, Egypt. The system is based on Artificial Neural Network (ANN) and is composed of two modules; extracting a set of features that quantifies the seismogram signatures using Linear Predication Code (LPC) and a classifer to discriminate the seismic events The data used are a set of 320 seismic recorded by Egyptian National Seismic Network (ENSN); 142 records are explosions and 178 are local earthquakes. n e classification results have shown that the suggested system is eficient it provides a correct classijcation performance of 93.7%.
{"title":"Classification of seismic events in suez gulf area, egypt using artificial neural network","authors":"M.A. Abu-Elsoud, F. Abou-Chadi, A. M. Amin, M. Mahana","doi":"10.1109/ICEEC.2004.1374460","DOIUrl":"https://doi.org/10.1109/ICEEC.2004.1374460","url":null,"abstract":"An automatic system has been developed to classijj the seismic events in the Suez Gulf area, Egypt. The system is based on Artificial Neural Network (ANN) and is composed of two modules; extracting a set of features that quantifies the seismogram signatures using Linear Predication Code (LPC) and a classifer to discriminate the seismic events The data used are a set of 320 seismic recorded by Egyptian National Seismic Network (ENSN); 142 records are explosions and 178 are local earthquakes. n e classification results have shown that the suggested system is eficient it provides a correct classijcation performance of 93.7%.","PeriodicalId":180043,"journal":{"name":"International Conference on Electrical, Electronic and Computer Engineering, 2004. ICEEC '04.","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125577929","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}
Pub Date : 2004-09-05DOI: 10.1109/ICEEC.2004.1374386
A.E.M. Ibrahim, D. House
We have developed a genetic algorithm approach for automatically generating procedural textures. Our system, known as GenShade, evaluates evolutionarily generated procedural textures by comparing their rendered images with single or multiple target images of a desired texture. It uses a multiresolution image querying metric to automatically prioritize parents for breeding. GenShade uses a novel approach to the genetic algorithm problem, mimicking several key factors in natural selection. It employs a multiple generation breeding population, a notion of gender, and the concept of aging to maintain diversity while providing many breeding opportunities to highly successful offspring. The approach is also especially efficient running in a multiple processor, multiple selectionstrategy mode. This paper discusses and evaluates these Genetic Algorithm extensions.
{"title":"Genetic algorithm extensions","authors":"A.E.M. Ibrahim, D. House","doi":"10.1109/ICEEC.2004.1374386","DOIUrl":"https://doi.org/10.1109/ICEEC.2004.1374386","url":null,"abstract":"We have developed a genetic algorithm approach for automatically generating procedural textures. Our system, known as GenShade, evaluates evolutionarily generated procedural textures by comparing their rendered images with single or multiple target images of a desired texture. It uses a multiresolution image querying metric to automatically prioritize parents for breeding. GenShade uses a novel approach to the genetic algorithm problem, mimicking several key factors in natural selection. It employs a multiple generation breeding population, a notion of gender, and the concept of aging to maintain diversity while providing many breeding opportunities to highly successful offspring. The approach is also especially efficient running in a multiple processor, multiple selectionstrategy mode. This paper discusses and evaluates these Genetic Algorithm extensions.","PeriodicalId":180043,"journal":{"name":"International Conference on Electrical, Electronic and Computer Engineering, 2004. ICEEC '04.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131304884","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}
Pub Date : 2004-09-05DOI: 10.1109/ICEEC.2004.1374609
F. N. Abdelbar, N. Ahmed, E. Ali
This paper presents a new technique for starting a high performance reluctance motors which cannot pull into step at normal operating condition. The proposed technique based on starting of the reluctance motor al frequency higher than the normal frequency. At the instant that the rotor speed reaches the synchronous speed of normal frequency. The main aim of the paper is starting and pulling into step of reluctance motor while keeping the desired performance without changing the motor parameter and design.
{"title":"Synchronisation of high performance reluctance motors by increasing the supply frequency","authors":"F. N. Abdelbar, N. Ahmed, E. Ali","doi":"10.1109/ICEEC.2004.1374609","DOIUrl":"https://doi.org/10.1109/ICEEC.2004.1374609","url":null,"abstract":"This paper presents a new technique for starting a high performance reluctance motors which cannot pull into step at normal operating condition. The proposed technique based on starting of the reluctance motor al frequency higher than the normal frequency. \u0000At the instant that the rotor speed reaches the synchronous speed of normal frequency. The main aim of the paper is starting and pulling into step of reluctance motor while keeping the desired performance without changing the motor parameter and design.","PeriodicalId":180043,"journal":{"name":"International Conference on Electrical, Electronic and Computer Engineering, 2004. ICEEC '04.","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121996438","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}
Pub Date : 2004-09-05DOI: 10.1109/ICEEC.2004.1374510
S. Poriazis
The behavior of the 1:13 Phased Demultiplexer (PDMUX13) circuit is analyzed. The circuit demultiplexes the input clock signal into thirteen phased output signals by streaming sets of twenty-six clock phases. A phase difference equal to the half period of the clock is maintained between consecutive output transitions. The VHDL description of the PDMUX13 cell is given and the simulation and synthesis results are generated. A 2-level tree-like structure is built by applying the phased outputs of the PDMUX13 cell into the corresponding clock inputs of thirteen cell replicas that extend the circuit behavior. The EXOR13 gate is attached to the PDMUX13 cell output ports and is aggregating all the phases that the phased clock signals are carrying while preserving their phase associations.
{"title":"The 1:3 phased demultiplexer circuit","authors":"S. Poriazis","doi":"10.1109/ICEEC.2004.1374510","DOIUrl":"https://doi.org/10.1109/ICEEC.2004.1374510","url":null,"abstract":"The behavior of the 1:13 Phased Demultiplexer (PDMUX13) circuit is analyzed. The circuit demultiplexes the input clock signal into thirteen phased output signals by streaming sets of twenty-six clock phases. A phase difference equal to the half period of the clock is maintained between consecutive output transitions. The VHDL description of the PDMUX13 cell is given and the simulation and synthesis results are generated. A 2-level tree-like structure is built by applying the phased outputs of the PDMUX13 cell into the corresponding clock inputs of thirteen cell replicas that extend the circuit behavior. The EXOR13 gate is attached to the PDMUX13 cell output ports and is aggregating all the phases that the phased clock signals are carrying while preserving their phase associations.","PeriodicalId":180043,"journal":{"name":"International Conference on Electrical, Electronic and Computer Engineering, 2004. ICEEC '04.","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121258291","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}
Pub Date : 2004-09-05DOI: 10.1109/ICEEC.2004.1374611
A. Boukhelifa, M. Kherbouch, A. Chériti, R. Ibtiouen, O. Touhami, R. Tahmi
: This paper presents , the stator current minimization in an induction machine controlled by the oriented flux method. This minimization is realized by two different methods, a dynamic programming and the optimization in permanent operating regime. Flux in the machine is no more constant as it is the case in the conventional vectorial control, but it evolves according to the operating point. The theoretical results obtained from the simulation of the optimization methods are presented at the end of this article. These results are compared to those resulting from constant flux operation.
{"title":"Stator current minimization by field optimization in induction machine","authors":"A. Boukhelifa, M. Kherbouch, A. Chériti, R. Ibtiouen, O. Touhami, R. Tahmi","doi":"10.1109/ICEEC.2004.1374611","DOIUrl":"https://doi.org/10.1109/ICEEC.2004.1374611","url":null,"abstract":": This paper presents , the stator current minimization in an induction machine controlled by the oriented flux method. This minimization is realized by two different methods, a dynamic programming and the optimization in permanent operating regime. Flux in the machine is no more constant as it is the case in the conventional vectorial control, but it evolves according to the operating point. The theoretical results obtained from the simulation of the optimization methods are presented at the end of this article. These results are compared to those resulting from constant flux operation.","PeriodicalId":180043,"journal":{"name":"International Conference on Electrical, Electronic and Computer Engineering, 2004. ICEEC '04.","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126617897","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}
Pub Date : 2004-09-05DOI: 10.1109/ICEEC.2004.1374456
S. Mahmoud, M. El-Melegy
This paper focuses on evaluating a number of statistical and neural methods for supervised, pixel-wise remote-sensing image classification and decision fusion. Despite the enormous progress in the analysis of remote sensing imagery over the past three decades, still much is desired in the area of image classiJication as no specxjk algorithm is known to provide accurate results under all circumstances. Decision fusion may be pursued to combine the outputs of dflerent classifiers applied on the same data, in the hope of combining the best of what each approach provides. We report the results of the comparison between several classification and fusion methods on two real datasets, one of which is the standard benchmark Satimage dataset. It is shown that the fusion approaches can indeed outpei$orm the pei$ormance of the best classif er.
{"title":"Statistical and neural methods for remote-sensing image classification and decision fusion: a comparative study","authors":"S. Mahmoud, M. El-Melegy","doi":"10.1109/ICEEC.2004.1374456","DOIUrl":"https://doi.org/10.1109/ICEEC.2004.1374456","url":null,"abstract":"This paper focuses on evaluating a number of statistical and neural methods for supervised, pixel-wise remote-sensing image classification and decision fusion. Despite the enormous progress in the analysis of remote sensing imagery over the past three decades, still much is desired in the area of image classiJication as no specxjk algorithm is known to provide accurate results under all circumstances. Decision fusion may be pursued to combine the outputs of dflerent classifiers applied on the same data, in the hope of combining the best of what each approach provides. We report the results of the comparison between several classification and fusion methods on two real datasets, one of which is the standard benchmark Satimage dataset. It is shown that the fusion approaches can indeed outpei$orm the pei$ormance of the best classif er.","PeriodicalId":180043,"journal":{"name":"International Conference on Electrical, Electronic and Computer Engineering, 2004. ICEEC '04.","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122210489","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}
Pub Date : 2004-09-05DOI: 10.1109/ICEEC.2004.1374593
M. Abd-El-Aziz, A.A. AdIy, E.-E.-D.M. Abou-EI-Zahab
Computation of forces to which busbars are subjected, both in normal and transient situations, have always been an important issue in order to provide sufficient clamping mechanisms and/or suggest suitable inter-busbar spacing criteria. This paper presents an analytical approach using which forces and force densities acting on busbars may be computed. Details of the approach and sample numerical simulations are given in the paper.
{"title":"Assessment of electromagnetic forces resulting from arbitrary geometrical busbar configurations","authors":"M. Abd-El-Aziz, A.A. AdIy, E.-E.-D.M. Abou-EI-Zahab","doi":"10.1109/ICEEC.2004.1374593","DOIUrl":"https://doi.org/10.1109/ICEEC.2004.1374593","url":null,"abstract":"Computation of forces to which busbars are subjected, both in normal and transient situations, have always been an important issue in order to provide sufficient clamping mechanisms and/or suggest suitable inter-busbar spacing criteria. This paper presents an analytical approach using which forces and force densities acting on busbars may be computed. Details of the approach and sample numerical simulations are given in the paper.","PeriodicalId":180043,"journal":{"name":"International Conference on Electrical, Electronic and Computer Engineering, 2004. ICEEC '04.","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117283610","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}
Pub Date : 2004-09-05DOI: 10.1109/ICEEC.2004.1374504
E. Hegazi, R. Yousry
We report on a fast simulator for passive delta sigma analog-to-digital converters and general passive filters. An algorithm that relies on discrete time circuit partitioning is devised to reduce simulation time. Test cases include a complete passive δΣADC that meets the specification of GSM, Bluetooth and WCDMA.
{"title":"Passim: a fast simulator for passive /spl Delta//spl Sigma/ ADC and passive switched-C filters","authors":"E. Hegazi, R. Yousry","doi":"10.1109/ICEEC.2004.1374504","DOIUrl":"https://doi.org/10.1109/ICEEC.2004.1374504","url":null,"abstract":"We report on a fast simulator for passive delta sigma analog-to-digital converters and general passive filters. An algorithm that relies on discrete time circuit partitioning is devised to reduce simulation time. Test cases include a complete passive δΣADC that meets the specification of GSM, Bluetooth and WCDMA.","PeriodicalId":180043,"journal":{"name":"International Conference on Electrical, Electronic and Computer Engineering, 2004. ICEEC '04.","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132856447","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}
Pub Date : 2004-09-05DOI: 10.1109/ICEEC.2004.1374411
Tarek S. Sobh, Essam M. Hamed
IP spoofing enables the network attackers to hide their identity while the IP traceback allows victim to identi3 the origin of attackers. Many IP traceback techniques are suggested such as ICMP trace messages, Probabilistic Packet Marking, Hash-based IP Traceback, etc. The aim of this work is topresent an Intelligent Packet Filtering for defending against both the network Denial of Service (DOS) and Distributed Denial of Service (DDoS) attacks. In addition, the proposed model introduces active response mechanism for taking rapid action against attacker. This work is motivated by the increased frequency and sophistication of denial-of-service attacks and by the difficulty in tracing packets with incorrect, or “spoofed”, source addresses. Also, this paper presents within the proposed model a tracing approach based on the packet marking.
{"title":"An intelligent model for mitigating the attack effects","authors":"Tarek S. Sobh, Essam M. Hamed","doi":"10.1109/ICEEC.2004.1374411","DOIUrl":"https://doi.org/10.1109/ICEEC.2004.1374411","url":null,"abstract":"IP spoofing enables the network attackers to hide their identity while the IP traceback allows victim to identi3 the origin of attackers. Many IP traceback techniques are suggested such as ICMP trace messages, Probabilistic Packet Marking, Hash-based IP Traceback, etc. The aim of this work is topresent an Intelligent Packet Filtering for defending against both the network Denial of Service (DOS) and Distributed Denial of Service (DDoS) attacks. In addition, the proposed model introduces active response mechanism for taking rapid action against attacker. This work is motivated by the increased frequency and sophistication of denial-of-service attacks and by the difficulty in tracing packets with incorrect, or “spoofed”, source addresses. Also, this paper presents within the proposed model a tracing approach based on the packet marking.","PeriodicalId":180043,"journal":{"name":"International Conference on Electrical, Electronic and Computer Engineering, 2004. ICEEC '04.","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133507213","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}
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