2014 IEEE ANDESCON最新文献

Specific absorption radiation measurement of anomalous Bessel-Hankel fields by base stations antennas 基站天线异常贝塞尔-汉克尔场的特异吸收辐射测量

2014 IEEE ANDESCON Pub Date : 2014-10-01 DOI: 10.1109/ANDESCON.2014.7098570

H. Nieto-Chaupis

{"title":"Specific absorption radiation measurement of anomalous Bessel-Hankel fields by base stations antennas","authors":"H. Nieto-Chaupis","doi":"10.1109/ANDESCON.2014.7098570","DOIUrl":"https://doi.org/10.1109/ANDESCON.2014.7098570","url":null,"abstract":"This paper focuses on the identification and calculation of anomalous fields in the vicinity of base stations antennas whose power emission does not surpasses the required ones as dictated by the well-known radiation standards and norms. For this end, the exponential part of the classical potential vector is expanded onto spherical Hankel and Bessel functions by taking advantage of the isotropic field emission of the source. The usage of high harmonics in the calculations is the key point in this work. In order to observe anomalous field, up to 25 harmonics in all electrodynamics relations were added. We restring ourselves to those base stations antennas located on buildings whose height are ranging between 5 and 10 m. In this study is encountered that the proposed formulation yields a negligible deviation from standard values of exposure levels, through the measurement of specific absorption radiation (SAR) thereby discarding possibilities of contamination by radiation around the emission source. The present model yields a difference of 2.5% with respect to previous works, fact which is traduced in SAR values of around 24μWKg-1 for a 2GHz and 1 Vm-1 source, contemplating an error of order of 0.5%.","PeriodicalId":123628,"journal":{"name":"2014 IEEE ANDESCON","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126818355","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

Building an environment map and navigation of an autonomous mobile robot 构建自主移动机器人的环境地图和导航

2014 IEEE ANDESCON Pub Date : 2014-10-01 DOI: 10.1109/ANDESCON.2014.7098559

Alfredo Alvarado, Hector Vargas

引用次数: 0

Extracting points features from laser rangefinder data based on hough transform 基于霍夫变换的激光测距数据点特征提取

2014 IEEE ANDESCON Pub Date : 2014-10-01 DOI: 10.1109/ANDESCON.2014.7098579

N. Certad, Carlos Mastalli, J. Cappelletto, J. Grieco

引用次数: 1

Estimating the Rician noise level in brain MR image 脑磁共振图像中噪声水平的估计

2014 IEEE ANDESCON Pub Date : 2014-10-01 DOI: 10.1109/ANDESCON.2014.7098539

Maria G. Pereza, Aura Concib, Ana Belen Morenoc, Victor H. Andaluza, J. A. Hernándezd

{"title":"Estimating the Rician noise level in brain MR image","authors":"Maria G. Pereza, Aura Concib, Ana Belen Morenoc, Victor H. Andaluza, J. A. Hernándezd","doi":"10.1109/ANDESCON.2014.7098539","DOIUrl":"https://doi.org/10.1109/ANDESCON.2014.7098539","url":null,"abstract":"For an efficient analysis the estimation of the noise level in images is very important to specific estimates of each modality. Moreover, it is a fundamental step and indispensable procedure for a number of image processing approaches. Especially in magnetic resonance images (MRI) due to the Rician presented in these, where the level of noise must be evaluated. In this paper a new method to estimate the noise level in MR images T1-w is proposed and compared with a known level of the ration of signal and noise presented. The advantage of this is its easiness for utilization during image acquisition and of course the adaptability of the idea of other areas of body. The correctness of the evaluation is addressed by comparison of Atlas noise free images where the level of Rician noise was artificially added and known. The main idea is the matching of same slices after registration in order to evaluate the level of noise. For evaluation of the range of noise in an image we used the signal noise ratio - SNR and a set of MRI with increasing levels of Rician noise. However, others metrics like the normalized cross correlation - NCC or the Root Mean Squared Error (RMSE) could be used as well.","PeriodicalId":123628,"journal":{"name":"2014 IEEE ANDESCON","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128548736","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: 7

Prototype for the study of physical phenomena manifested in seismic waves 研究地震波中表现的物理现象的原型

2014 IEEE ANDESCON Pub Date : 2014-10-01 DOI: 10.1109/ANDESCON.2014.7098578

Vargas Escobar Laura Juliana, Monclou Salcedo Alex Alberto

引用次数: 0

Automatic synthesis of locally-clocked extended burst-mode AFSMs based on transparent latches 基于透明锁存器的本地时钟扩展突发模式AFSMs自动合成

2014 IEEE ANDESCON Pub Date : 2014-10-01 DOI: 10.1109/ANDESCON.2014.7098580

D. L. Oliveira, T. Curtinhas, L. Faria, O. Saotome, L. Romano

{"title":"Automatic synthesis of locally-clocked extended burst-mode AFSMs based on transparent latches","authors":"D. L. Oliveira, T. Curtinhas, L. Faria, O. Saotome, L. Romano","doi":"10.1109/ANDESCON.2014.7098580","DOIUrl":"https://doi.org/10.1109/ANDESCON.2014.7098580","url":null,"abstract":"Summary form only given. Controllers based on Synchronous Finite State Machines (SFSM) are components widely used in complex digital systems. These systems can present critical requirements, such as power consumption, robustness, performance, etc. In this context, the asynchronous paradigm shows interesting features that fit as an alternative for the design, but the lack of appropriate tools and the high difficulty of the design are already drawbacks. This paper proposes a new architecture, based in transparent latches, for implementing asynchronous FSMs with local clock. The existence of a local clock reduces the requirements of asynchronous logic. The asynchronous FSMs with local clock, implemented in the new architecture, are synthesized by SICARELO method. This method parts from a popular specification known as extended burst-mode (XBM) and uses the techniques of the synchronous paradigm to accomplish the synthesis. The new architecture was tested in a set of well-known benchmarks and compared with the AFSMs implemented through the standard architecture gRS, synthesized by the Miriã tool. Compared to Miriã tool, SICARELO tool achieved an average reduction of 12% in the number of state variables, 4% in the combinatorial logic of products and 15% in literals, although presenting a penalty of 79% on the number of latches. These results lead to a high potential of practical implementation of this method in actual applications.","PeriodicalId":123628,"journal":{"name":"2014 IEEE ANDESCON","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122679210","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

Developing high-frequency electronics in Mexico: Design and realization of microwave generators for potential applications on terrestrial and satellite radio link 在墨西哥发展高频电子:微波发生器的设计和实现，用于地面和卫星无线电链路的潜在应用

2014 IEEE ANDESCON Pub Date : 2014-10-01 DOI: 10.1109/ANDESCON.2014.7098569

A. Morales-Diaz, C. Gutiérrez‐Martínez, J. A. Torres‐Fórtiz, Jacobo Meza Perez, Brenda Escobar Mendez, Jose Silviano Guichard Romero

{"title":"Developing high-frequency electronics in Mexico: Design and realization of microwave generators for potential applications on terrestrial and satellite radio link","authors":"A. Morales-Diaz, C. Gutiérrez‐Martínez, J. A. Torres‐Fórtiz, Jacobo Meza Perez, Brenda Escobar Mendez, Jose Silviano Guichard Romero","doi":"10.1109/ANDESCON.2014.7098569","DOIUrl":"https://doi.org/10.1109/ANDESCON.2014.7098569","url":null,"abstract":"Summary form only given: Design and development of high frequency electronics is an open field in Latin America. High frequency technology is crucial in a wide variety of systems such as communications, signal processing, high frequency instrumentation, etc. In this perspective, we describe efforts for developing high frequency electronics in Mexico. In this paper we describe the design, realization and characterization phase lock loop (PLL)-based, X-band microwave generators, which are fundamental elements in any high frequency electronic system operating in this band. In this paper we describe an X-band (7.2 GHz) generator, which has been designed, realized and characterized in our laboratory using commercial microwave integrated circuits (MMIC's). The realized X-band generators have been characterized on their parameters of signal purity, phase noise and frequency stability. The resulting performances are comparable to those shown by similar commercial generators.","PeriodicalId":123628,"journal":{"name":"2014 IEEE ANDESCON","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129947923","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

Design and implementation of a communications system for streaming real-time voice using SDR technology in USRP E110 devices 基于SDR技术的USRP E110设备流实时语音通信系统的设计与实现

2014 IEEE ANDESCON Pub Date : 2014-10-01 DOI: 10.1109/ANDESCON.2014.7098571

M. D. Torres, C. Vaca, C. D. Altamirano, C. P. Bernal

引用次数: 0

Design, construction and implementation of right biomechanical hand prosthesis 右臂生物力学假肢的设计、构造与实现

2014 IEEE ANDESCON Pub Date : 2014-10-01 DOI: 10.1109/ANDESCON.2014.7098537

J. Cuzco, M. Quinde, Joffre Brito, J. Calle, F. Urgiles

引用次数: 2

State-of-art based on proportional fairness for MVNO applied to advanced metering infrastructure 基于比例公平的MVNO技术在高级计量基础设施中的应用现状

2014 IEEE ANDESCON Pub Date : 2014-10-01 DOI: 10.1109/ANDESCON.2014.7098567

C. Patricio, Morocho Catalina

引用次数: 0