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Metaheuristic optimization approach to mobile robot path planning 移动机器人路径规划的元启发式优化方法
2012 International Conference on Engineering and Technology (ICET) Pub Date : 2012-12-31 DOI: 10.1109/ICENGTECHNOL.2012.6396150
Ahmed Hussein, Heba Mostafa, Mohamed Badrel-din, Osama Sultan, Alaa Khamis
{"title":"Metaheuristic optimization approach to mobile robot path planning","authors":"Ahmed Hussein, Heba Mostafa, Mohamed Badrel-din, Osama Sultan, Alaa Khamis","doi":"10.1109/ICENGTECHNOL.2012.6396150","DOIUrl":"https://doi.org/10.1109/ICENGTECHNOL.2012.6396150","url":null,"abstract":"This paper presents a metaheuristic optimization-based approach to mobile robot path planning problem. A comparative study between trajectory-based metaheuristic optimization and population-based metaheuristic optimization is conducted. Breadth-first deterministic search is used to find the optimal solution (ground truth) that is compared to the paths generated by tabu search, simulated annealing and genetic algorithm. The experimental study shows that simulated annealing outperforms the other algorithms in terms of computational time while tabu search gives the shortest path.","PeriodicalId":149484,"journal":{"name":"2012 International Conference on Engineering and Technology (ICET)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125823144","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: 45
Energy reduction in clustered wind farms: The case of two neighboring wind farms in Egypt 集群式风力发电场的能源减少:埃及两个相邻风力发电场的案例
2012 International Conference on Engineering and Technology (ICET) Pub Date : 2012-12-31 DOI: 10.1109/ICENGTECHNOL.2012.6396169
M. Mahmoud, M. El-Samanoudy, A. Abdelhameed, M. El-Khayat
{"title":"Energy reduction in clustered wind farms: The case of two neighboring wind farms in Egypt","authors":"M. Mahmoud, M. El-Samanoudy, A. Abdelhameed, M. El-Khayat","doi":"10.1109/ICENGTECHNOL.2012.6396169","DOIUrl":"https://doi.org/10.1109/ICENGTECHNOL.2012.6396169","url":null,"abstract":"Planning of wind power installations in large areas with good wind potential mostly necessitates clustering wind farms of comparable capacities in parcels nearby each others. The present work applies a methodology based on simple momentum theory to estimate the energy yield of a single wind turbine, wind farm and clustered farms in such areas. The effect of up-wind farms on farms down-wind is investigated using the Wind Atlas Analysis and Application Program (WAsP) for two real projects separated by about 2.5 km in Zafarana area on Red Sea coast. The site terrain characteristics, meteorological data, turbine specifications and turbines spatial distribution are used to estimate the area's wind climatology, turbine's energy yield and the change in different operational parameters such as the thrust coefficient, capacity factor, wake losses and plant utilization time. The results; confirmed by the real production data, showed that the energy yield is not only affected by the wind turbines within the site, but also by neighboring wind farms, specially clustered ahead in the prevailing wind direction. Also, it highlights the importance of proper planning of land allocations for wind farms in large area to avoid penalizing existing projects by new ones.","PeriodicalId":149484,"journal":{"name":"2012 International Conference on Engineering and Technology (ICET)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116843963","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
Secure clustering based SEP using Virtual ECC Group Key for Wireless Sensor Networks 基于虚拟ECC组密钥的无线传感器网络安全聚类SEP
2012 International Conference on Engineering and Technology (ICET) Pub Date : 2012-12-31 DOI: 10.1109/ICENGTECHNOL.2012.6396127
A. E. El-Din, R. Ramadan, M. Fayek
{"title":"Secure clustering based SEP using Virtual ECC Group Key for Wireless Sensor Networks","authors":"A. E. El-Din, R. Ramadan, M. Fayek","doi":"10.1109/ICENGTECHNOL.2012.6396127","DOIUrl":"https://doi.org/10.1109/ICENGTECHNOL.2012.6396127","url":null,"abstract":"A Wireless Sensor Network (WSN) is a collection of self-organized smart motes for achieving the desire of the assigned application. However, for the different limitations facing these motes including memory available, computational and communicational limitations, clustering them is one of the main solutions for prolonging the lifetime of the network. At the same time, due to the critical information transferred through the network, security is considered as main challenge for WSNs. This paper proposes a new security framework called Virtual ECC Group Key (VEGK) merging Elliptic Curve Cryptography (ECC) with symmetric pairwise keys. In addition, we believe that merging security with clustering will be beneficial to the energy saving in WSN, this paper is based on Stable Election Protocol (SEP) based clustering. Based on the analysis of different scenarios, our proposed security framework is proved to protect the network from many attacks.","PeriodicalId":149484,"journal":{"name":"2012 International Conference on Engineering and Technology (ICET)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130627676","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
Performance analysis of DS-CDMA system using fast adaptive filtering under different jamming techniques 采用快速自适应滤波的DS-CDMA系统在不同干扰下的性能分析
2012 International Conference on Engineering and Technology (ICET) Pub Date : 2012-12-31 DOI: 10.1109/ICENGTECHNOL.2012.6396114
M. Samir, E. Shaheen, A. A. A. Wahab
{"title":"Performance analysis of DS-CDMA system using fast adaptive filtering under different jamming techniques","authors":"M. Samir, E. Shaheen, A. A. A. Wahab","doi":"10.1109/ICENGTECHNOL.2012.6396114","DOIUrl":"https://doi.org/10.1109/ICENGTECHNOL.2012.6396114","url":null,"abstract":"This paper proposes an enhancement to the performance of a Direct Sequence Code Division Multiple Access (DS-CDMA) system by utilizing an adaptive filter in the presence of different jamming techniques. In order to combat the impact of such jamming, the adaptive filter utilizes three adaptive algorithms which are the Variable Step-Size Affine Projection (VSS-APA) algorithm, the Generalized Normalized Gradient Descent (GNGD) algorithm, and the Generalized Square-Error-Regularized (GSER) NLMS algorithm. These algorithms have the advantages of fast convergence, low steady state mean squared error and the ability to improve the bit error rate (BER) performance of the conventional CDMA system, in the presence of multi-path, multiple-access, and different jamming signals. Results show that the VSS-APA outperforms other algorithms in the presence of barrage jamming. Whereas in the presence of partial band jamming the GSER-NLMS adaptive filter gives the best performance.","PeriodicalId":149484,"journal":{"name":"2012 International Conference on Engineering and Technology (ICET)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129117333","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: 15
Design of a 10W, highly linear, ultra wideband power amplifier based on GaN HEMT 基于GaN HEMT的10W高线性超宽带功率放大器的设计
2012 International Conference on Engineering and Technology (ICET) Pub Date : 2012-12-31 DOI: 10.1109/ICENGTECHNOL.2012.6396134
B. M. Abdrahman, H. Ahmed, M. Gouda
{"title":"Design of a 10W, highly linear, ultra wideband power amplifier based on GaN HEMT","authors":"B. M. Abdrahman, H. Ahmed, M. Gouda","doi":"10.1109/ICENGTECHNOL.2012.6396134","DOIUrl":"https://doi.org/10.1109/ICENGTECHNOL.2012.6396134","url":null,"abstract":"This paper presents a design for a highly-linear power amplifier - based on GaN HEMT- with an output power of more than 10 W, and an ultra-broadband bandwidth extending from 0.8 to 4.2 GHz (136%). Different design techniques are adopted to achieve a flat power gain of 10 ± 1.5 dB over the entire operating bandwidth. Eighth order low pass filter matching circuits are designed for input and output matching networks, providing optimal fundamental and harmonic impedances within more than 2 octaves of operation. The designed power amplifier exhibits a small signal gain more than 10 dB, an input/output return loss better than 10 dB within the operation bandwidth. Second and third-harmonic intermodulation distortion are far below -36 dBc and -45 dBc, respectively, at an input power of 30 dBm over the entire frequency band, while achieving a power added efficiency (PAE) better than 25%. Using a two-tone testbench with a frequency spacing of 8 MHz, a maximum value of the output OIP2 and OIP3 are found to be greater than 50 dBm, and 60 dBm, respectively.","PeriodicalId":149484,"journal":{"name":"2012 International Conference on Engineering and Technology (ICET)","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126940578","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: 8
Image encryption in the fractional-order domain 分数阶域的图像加密
2012 International Conference on Engineering and Technology (ICET) Pub Date : 2012-12-31 DOI: 10.1109/ICENGTECHNOL.2012.6396148
A. Radwan, S. Abd-El-Hafiz, S. H. AbdElHaleem
{"title":"Image encryption in the fractional-order domain","authors":"A. Radwan, S. Abd-El-Hafiz, S. H. AbdElHaleem","doi":"10.1109/ICENGTECHNOL.2012.6396148","DOIUrl":"https://doi.org/10.1109/ICENGTECHNOL.2012.6396148","url":null,"abstract":"This paper presents a new image encryption scheme based on the fractional-order Lorenz system which gives more degrees of freedom in key generation. In the modified fractional-order system, the key length is doubled using the three fractional-orde r parameters beside the three initial conditions, which makes it invulnerable to brute-force attacks. In addition, using a very simple algorithm, based on pixel confusion only, strongly encrypted images are produced. Such an algorithm can be used in real time applications. To evaluate the algorithm and analyze the encryption results, a standard image is used. A comparison of the colored correlation coefficients (horizontal, vertical, diagonal) for different cases with respect to a fractional-order parameter and another system parameter are introduced. Moreover, the encrypted image shows high sensitivity to the fractional-order key, which appears from the wrong decryption with 0.1% change of the fractional-order parameter.","PeriodicalId":149484,"journal":{"name":"2012 International Conference on Engineering and Technology (ICET)","volume":"281 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131532194","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: 29
Stress analysis of rotating disc with non-uniform thickness using finite element modeling 非均匀厚度转盘的有限元应力分析
2012 International Conference on Engineering and Technology (ICET) Pub Date : 2012-12-31 DOI: 10.1109/ICENGTECHNOL.2012.6396137
A. Elhefny, L. Guozhu
{"title":"Stress analysis of rotating disc with non-uniform thickness using finite element modeling","authors":"A. Elhefny, L. Guozhu","doi":"10.1109/ICENGTECHNOL.2012.6396137","DOIUrl":"https://doi.org/10.1109/ICENGTECHNOL.2012.6396137","url":null,"abstract":"There are numerous applications of rotating disc in the aerospace industry such as in gas turbines. In this paper, stresses of an existing turbine disc were studied. It is aimed to highlight the stress distribution in order to benefit the design purposes of the disc and implies the importance of using finite element (FE) analysis in simulating the real design case. Then, to present the real model, a two-dimensional (2-D) axisymmetric model for non-uniform disc was analyzed using FE. Stresses developed due to the disc operating conditions at high rotational speeds and thermal gradients were evaluated using conduction heat transfer mode, taking into consideration the material behavior at elevated temperatures as well as the effect of the real boundary conditions. The FE model reveals that the greatest stresses in the disc result from rotation and thermal loads, and they are located at the center of the disc.","PeriodicalId":149484,"journal":{"name":"2012 International Conference on Engineering and Technology (ICET)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131542309","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: 4
Manufacturing of ZTA composites for biomedical applications 生物医学用ZTA复合材料的制造
2012 International Conference on Engineering and Technology (ICET) Pub Date : 2012-12-31 DOI: 10.1109/ICENGTECHNOL.2012.6396123
M. A. Elezz, F. Kern, R. Gadow
{"title":"Manufacturing of ZTA composites for biomedical applications","authors":"M. A. Elezz, F. Kern, R. Gadow","doi":"10.1109/ICENGTECHNOL.2012.6396123","DOIUrl":"https://doi.org/10.1109/ICENGTECHNOL.2012.6396123","url":null,"abstract":"Zirconia toughened alumina (ZTA) ceramics are interesting materials for biomedical applications due to their high strength, hardness, fracture toughness, abrasion resistance and excellent biocompatibility. The manufacturing of biomedical ceramic components involves the development of an integrated production process, beginning with the conditioning of the raw materials to the final component. Near-net-shape manufacturing technology is used to achieve a significant improvement in quality, production efficiency and cost. ZTA containing 10 vol-% zirconia (1.5Y) was produced from submicron size powders. The rheological behavior of 10 vol-% zirconia ZTA was investigated in order to optimize the recipes and predict the molding behavior. ZTA was in-situ reinforced with 5 vol-% strontium hexa-aluminate platelets with the intention to improve the mechanical properties. Results show that reinforcement of hexa-aluminate platelets enhance bending strength and fracture toughness but reduce the hardness of injection molded ZTA.","PeriodicalId":149484,"journal":{"name":"2012 International Conference on Engineering and Technology (ICET)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123078188","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: 4
Blind adaptive signal reception for MC-CDMA systems in Rayleigh fading channels under multiple narrow-band interference signals 多窄带干扰下瑞利衰落信道MC-CDMA系统的盲自适应信号接收
2012 International Conference on Engineering and Technology (ICET) Pub Date : 2012-12-31 DOI: 10.1109/ICENGTECHNOL.2012.6396113
M. Samir, E. Shaheen, A. A. E. Tawab
{"title":"Blind adaptive signal reception for MC-CDMA systems in Rayleigh fading channels under multiple narrow-band interference signals","authors":"M. Samir, E. Shaheen, A. A. E. Tawab","doi":"10.1109/ICENGTECHNOL.2012.6396113","DOIUrl":"https://doi.org/10.1109/ICENGTECHNOL.2012.6396113","url":null,"abstract":"This paper investigates the impact of multiple narrow-band interference (NBI) signals or jamming signals on the signal reception of multi-carrier code-division multiple-access (MC-CDMA) systems in single path Rayleigh fading channels. Different blind adaptive algorithms are proposed which determine a weight vector that optimally combines the desired signal contributions from different carriers while suppressing noise and interference. A performance comparison among these algorithms is provided via extensive simulations. No knowledge of the channel conditions (fading coefficients, signature sequences and timing of interferers, statistics of other noises, etc.) nor any training sequence is required. Performance results show that the proposed algorithms perform well and are robust against jamming or NBI.","PeriodicalId":149484,"journal":{"name":"2012 International Conference on Engineering and Technology (ICET)","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122078894","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
Effect of strain relaxation on the drain conductance in AlGaN/GaN HEMTs 应变松弛对AlGaN/GaN hemt漏导的影响
2012 International Conference on Engineering and Technology (ICET) Pub Date : 2012-12-31 DOI: 10.1109/ICENGTECHNOL.2012.6396129
A. Bellakhdar, A. Telia, L. Semra, A. Soltani
{"title":"Effect of strain relaxation on the drain conductance in AlGaN/GaN HEMTs","authors":"A. Bellakhdar, A. Telia, L. Semra, A. Soltani","doi":"10.1109/ICENGTECHNOL.2012.6396129","DOIUrl":"https://doi.org/10.1109/ICENGTECHNOL.2012.6396129","url":null,"abstract":"The aim of this work is to study the potential offered by microwave power in the device AlmGa1-mN/GaN HEMT. The effects of technological and electrical parameters such as the aluminum mole fraction \"m\", the thickness of the AlGaN doped layer \"dd\" and doping concentration \"Nd\" in the output conductance are studied taking into account the effects of spontaneous and piezoelectric polarizations in the heterojunction AlGaN/GaN and the relaxation of the crystal lattice induced by the aluminum mole fraction. We presented an analytical model for the electrons concentration \"ns\" in the 2DEG and the current Ids in the channel for strong inversion regime by solving the Poisson equation and Schrödinger self-consistent calculations. From the analytical model of the current Ids including the effects of spontaneous and piezoelectric polarizations, and lattice relaxation, the output conductance gds according to the voltage Vds are deduced. We note that, the increasing of \"m\" and \"Nd\" increase the carrier density \"ns\" in the 2DEG. Although, the increase of the doped layer thickness increases the output conductance. The influence of the crystal lattice relaxation on the electrical performance acts directly on the threshold voltage if the value of the mole fraction exceeds 0.38.","PeriodicalId":149484,"journal":{"name":"2012 International Conference on Engineering and Technology (ICET)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116635427","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
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