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2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA)最新文献

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An experimental study of ultrasonic vibration-assisted grinding 超声振动辅助磨削的实验研究
2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA) Pub Date : 2012-12-01 DOI: 10.1109/ICTEA.2012.6462885
A. Nassar, E. Nassar
{"title":"An experimental study of ultrasonic vibration-assisted grinding","authors":"A. Nassar, E. Nassar","doi":"10.1109/ICTEA.2012.6462885","DOIUrl":"https://doi.org/10.1109/ICTEA.2012.6462885","url":null,"abstract":"Two-dimensional ultrasonically assisted grinding technique is proposed to achieve a high material removal rate and high surface quality simultaneously. In this technique, the work-piece is attached on the ultrasonic vibrator produced by bonding a PZT device on a metal elastic body, and the elliptic vibration is generated by the simultaneous creation of the longitudinal and bending vibration of the vibrator. The grinding experiments are carried out and experimental results show that the surface quality is improved that anticipate your paper as one part of the entire proceedings, and not as an independent document. Please do not revise any of the current designations.","PeriodicalId":245530,"journal":{"name":"2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA)","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133727480","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
Design of a rail-to-rail, low output impedance class AB power amplifier for envelope tracking of polar modulators 用于极性调制器包络跟踪的轨对轨低输出阻抗AB类功率放大器的设计
2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA) Pub Date : 2012-12-01 DOI: 10.1109/ICTEA.2012.6462845
A. Salimi, R. Dehghani, A. Nabavi
{"title":"Design of a rail-to-rail, low output impedance class AB power amplifier for envelope tracking of polar modulators","authors":"A. Salimi, R. Dehghani, A. Nabavi","doi":"10.1109/ICTEA.2012.6462845","DOIUrl":"https://doi.org/10.1109/ICTEA.2012.6462845","url":null,"abstract":"This paper presents the design of a class-AB power amplifier suitable for envelope modulator of polar power amplifiers. Polar modulation is one of the most popular RF power amplifier efficiency enhancement techniques. Class-AB power amplifier is a main building block of hybrid switching envelope modulator which is known as linear and efficient envelope modulator architecture. Design of high DC gain, wide bandwidth, low output impedance class-AB is important in the design of HSEM. In this paper the design of a class-AB PA suitable for 10 MHz OFDM signals will be discussed in a 0.18 μm CMOS technology. The class-AB PA has approximately 94 dB DC gain, 704 MHz unity gain bandwidth and 0.25 unity gain negative feedback output impedance at 20MHz.","PeriodicalId":245530,"journal":{"name":"2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133176755","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
A performance estimation model for GPU-based systems 基于gpu的系统性能估计模型
2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA) Pub Date : 2012-12-01 DOI: 10.1109/ICTEA.2012.6462883
J. Issa, S. Figueira
{"title":"A performance estimation model for GPU-based systems","authors":"J. Issa, S. Figueira","doi":"10.1109/ICTEA.2012.6462883","DOIUrl":"https://doi.org/10.1109/ICTEA.2012.6462883","url":null,"abstract":"GPUs - Graphics Processing Units are now used in a wide variety of computing systems, to solve a wide variety of computational problems. Even though they were initially developed to accelerate graphics processing, their parallel architecture has demonstrated to be extremely useful for other applications, including high-performance computing. Due to their widespread use, it is important to understand and estimate its performance, which depends on several architecture parameters, particularly core frequency, memory frequency, and number of cores. In this paper, we present an analytical model to estimate GPUs performance, and we demonstrate its accuracy using a set of benchmarks: 3D games, namely Crysis and Company of Heroes, a 3D Wave benchmark, namely DirectCompute. We also apply the model to a High Performance Computation benchmark, SGEMM, which is based on floating-point single precision matrix multiplications. Comparison between the output of the estimation model and measured data for different benchmarks and GPU architectures is less than 10% for all tested cases.","PeriodicalId":245530,"journal":{"name":"2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115876401","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 survey of entropy image thresholding techniques 熵图像阈值技术综述
2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA) Pub Date : 2012-12-01 DOI: 10.1109/ICTEA.2012.6462867
L. Mahmoudi, A. El Zaart
{"title":"A survey of entropy image thresholding techniques","authors":"L. Mahmoudi, A. El Zaart","doi":"10.1109/ICTEA.2012.6462867","DOIUrl":"https://doi.org/10.1109/ICTEA.2012.6462867","url":null,"abstract":"Entropy-based image thresholding has received considerable interest in recent years. It is an important concept in the area of image segmentation. The entropy-based approach was used to get the threshold of image from 80 ages; it is used to weight the amount of reserved information of image after segmentation. Our contribution in this paper, is to explain the idea of Shannon entropy and how he utilized it in image thresholding concept, then how it used in the idea of the cross entropy by Kullback and the concept of fuzzy entropy. We study different existing entropy algorithms for image thresholding. In this study we categorize these several algorithms into three groups according to the information they are exploiting and indicate their differences or similarities.","PeriodicalId":245530,"journal":{"name":"2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124871918","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: 16
An overview of simulation tools for renewable applications in power systems 电力系统中可再生能源应用的仿真工具概述
2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA) Pub Date : 2012-12-01 DOI: 10.1109/ICTEA.2012.6462878
H. Al-Sheikh, N. Moubayed
{"title":"An overview of simulation tools for renewable applications in power systems","authors":"H. Al-Sheikh, N. Moubayed","doi":"10.1109/ICTEA.2012.6462878","DOIUrl":"https://doi.org/10.1109/ICTEA.2012.6462878","url":null,"abstract":"This paper is a review of electrical simulation tools used for power system analysis with emphasize on applications based on renewable energy sources. The paper classifies simulation software into two classes: tools used for monitoring and controlling renewable systems and simulation tools used for modeling, designing, and simulating power systems.","PeriodicalId":245530,"journal":{"name":"2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122445133","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: 12
Error analysis of tiled overlapped subarrays 平铺重叠子阵列的误差分析
2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA) Pub Date : 2012-12-01 DOI: 10.1109/ICTEA.2012.6462902
T. Azar
{"title":"Error analysis of tiled overlapped subarrays","authors":"T. Azar","doi":"10.1109/ICTEA.2012.6462902","DOIUrl":"https://doi.org/10.1109/ICTEA.2012.6462902","url":null,"abstract":"In designing large phased arrays, it is common to design and construct a basic building block, or tile, and use duplicate tiles to build the final array. This method is important in both contiguous and overlapped subarrays. In stripline technology, the tile consists of a subarray of several elements on the top layer followed by the beamformer on the lower layers. Line bends, impedance transformers, and mutual coupling between adjacent lines can cause errors in the amplitude and phase distribution to the individual radiating elements. These errors can lead to other errors in phased arrays such as sidelobe levels and directivity. This paper presents a review of array theory as applied to both contiguous and overlapped subarrays. It also presents a method to help array designers differentiate between errors within the tile and others caused by crossovers between tiles.","PeriodicalId":245530,"journal":{"name":"2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121236074","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
Path loss model for radio wave propagation at VHF/UHF Bands using electric field strength measurement over Ilorin Middle-belt, Nigeria 利用电场强度测量尼日利亚伊洛林中部地区VHF/UHF波段无线电波传播的路径损耗模型
2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA) Pub Date : 2012-12-01 DOI: 10.1109/ICTEA.2012.6462900
O. Obiyemi, T. S. Ibiyemi, A. Gbenga-ilori, John Sunday Ojo
{"title":"Path loss model for radio wave propagation at VHF/UHF Bands using electric field strength measurement over Ilorin Middle-belt, Nigeria","authors":"O. Obiyemi, T. S. Ibiyemi, A. Gbenga-ilori, John Sunday Ojo","doi":"10.1109/ICTEA.2012.6462900","DOIUrl":"https://doi.org/10.1109/ICTEA.2012.6462900","url":null,"abstract":"Propagation models are useful tools for communication system planning and optimization of the radio spectrum which is a limited natural resource. An investigation on the suitable propagation model for Ilorin (8°30'N, 4°33'E), a sub-urban area in the Middle-belt of Nigeria is presented here. Experimental data consists of electric field strength obtained through drive test for two television transmitters on 203.25 MHz and 583.15 MHz. Validated predictions for Free space, Okumura and Hata models were compared analytically. Result shows that these empirical models neglect the actual terrain profile for television broadcast in Ilorin. Okumura model stands as the most suitable with optimal values of root mean square error (RMSE) and average relative error of 0.1319 and 0.4447 for 203.25 MHz and 583.15 MHz respectively. Better results can however be obtained if Okumura model is optimized for Ilorin to enhance electric field strength prediction and coverage estimation.","PeriodicalId":245530,"journal":{"name":"2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126562379","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
Improved wavelet wiener estimator in image denoising 改进的小波维纳估计在图像去噪中的应用
2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA) Pub Date : 2012-12-01 DOI: 10.1109/ICTEA.2012.6462891
I. Dagher, C. Taleb
{"title":"Improved wavelet wiener estimator in image denoising","authors":"I. Dagher, C. Taleb","doi":"10.1109/ICTEA.2012.6462891","DOIUrl":"https://doi.org/10.1109/ICTEA.2012.6462891","url":null,"abstract":"Image denoising involves the manipulation of the image data to produce a visually high quality image. This paper improves the Wiener filter in the wavelet domain without the usual zero mean assumption. An improved LESE (local expected square error) formula is derived. For each wavelet block, the center coefficient is estimated by comparing the LESE given by the usual Wiener filter and the improved LESE. The minimum between them is chosen. The improved filter gave a higher PSNR for all the test images and all the noise variances that we have used.","PeriodicalId":245530,"journal":{"name":"2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126488104","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
A calibrated near field scanning system applied to the characterization of IC electromagnetic radiation 一种用于集成电路电磁辐射表征的校准近场扫描系统
2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA) Pub Date : 2012-12-01 DOI: 10.1109/ICTEA.2012.6462850
M. Abouchahine, R. Perdriau, M. Ramdani, A. Saleh
{"title":"A calibrated near field scanning system applied to the characterization of IC electromagnetic radiation","authors":"M. Abouchahine, R. Perdriau, M. Ramdani, A. Saleh","doi":"10.1109/ICTEA.2012.6462850","DOIUrl":"https://doi.org/10.1109/ICTEA.2012.6462850","url":null,"abstract":"This paper presents a near field measurement system for the detection of all electromagnetic (EM) field components radiated by microwave devices. This characterization system based on the use of 4 semi-rigid coaxial probes (1 monopoly antenna, 1 differential dipole and 2 differential loops) and a controlled positioning system is power calibrated. It allows the localization of the radiation source in the RF integrated circuit (IC) and the measuring of the EM filed components amplitudes. The amplitude calibration is realized with a FR4 50 Ohms microstrip transmission line. The amplitude calibration of the system with performance factors for each probe is presented for the frequency range of [1MHz-1GHz]. A comparison between on the one hand, a 3D EM simulation of the entire probe with the standard and on the other side, the measure is presented.","PeriodicalId":245530,"journal":{"name":"2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128692381","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
Development of stripe biometric based fingerprint authentications systems in Automated Teller Machines 基于条纹生物识别的自动柜员机指纹认证系统的开发
2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA) Pub Date : 2012-12-01 DOI: 10.1109/ICTEA.2012.6462860
H. Lasisi, A. A. Ajisafe
{"title":"Development of stripe biometric based fingerprint authentications systems in Automated Teller Machines","authors":"H. Lasisi, A. A. Ajisafe","doi":"10.1109/ICTEA.2012.6462860","DOIUrl":"https://doi.org/10.1109/ICTEA.2012.6462860","url":null,"abstract":"Access control has been a great concern in this Information and Communication Technology (ICT) era. The need to control access to certain information and resources has been taken seriously by the ICT community. This paper believes that no single security method, algorithm, key or procedure is entirely secure. Hence, a combination of multiple security compliments is mandatory to provide a high level of protection against fraud and other threats. This paper combines two security components which are the magnetic stripe card and fingerprint recognition. It looks into the vulnerabilities of magnetic-stripe cards authentication combined with Personal Identification Numbers (PIN) or passwords widely used on Automated Teller Machines (ATMs) today. As a result, the paper proposes a framework for user identification and authentication in Automatic Teller Machines (ATMs) using Personal Identification Numbers (PIN), fingerprints and magnetic stripe cards as opposed to the PIN and magnetic stripe cards authentication method.","PeriodicalId":245530,"journal":{"name":"2012 2nd International Conference on Advances in Computational Tools for Engineering Applications (ACTEA)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116002249","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: 14
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