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2006 Multiconference on Electronics and Photonics最新文献

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Evaluation of the tie of a crystal clock by gps measurements with negative sawtooth correction and unbiased fir filtering 用负锯齿校正和无偏fir滤波的gps测量评价晶体时钟的稳定性
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335646
L. Arceo-Miquel, Y. Shmaliy, O. Ibarra-Manzano, J. Munoz-Diaz
{"title":"Evaluation of the tie of a crystal clock by gps measurements with negative sawtooth correction and unbiased fir filtering","authors":"L. Arceo-Miquel, Y. Shmaliy, O. Ibarra-Manzano, J. Munoz-Diaz","doi":"10.1109/MEP.2006.335646","DOIUrl":"https://doi.org/10.1109/MEP.2006.335646","url":null,"abstract":"The local crystal clock performance is evaluated in terms of the time interval error (TIE) that is a measure of inaccuracy in timekeeping. In this paper, we apply the unbiased FIR filter to examine the TIE by the GPS timing receiver with and without the negative sawtooth correction. The rubidium clock is used as a reference source of 1 PPS signal for the local crystal clock. We show that the unbiased FIR estimate is comparable to measurements with the sawtooth correction. Herewith, the estimate becomes much more accurate when the TIE changes with time very slowly.","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132799206","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
Volumetric reconstruction from DICOM/sup TM/ format in magnetic resonance imaging and 3D visualization 磁共振成像和3D可视化中DICOM/sup TM/格式的体积重建
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335654
J. Hernandez, J. Aguilar, A.Z. Lara
{"title":"Volumetric reconstruction from DICOM/sup TM/ format in magnetic resonance imaging and 3D visualization","authors":"J. Hernandez, J. Aguilar, A.Z. Lara","doi":"10.1109/MEP.2006.335654","DOIUrl":"https://doi.org/10.1109/MEP.2006.335654","url":null,"abstract":"The advances in 3D data modeling methods are becoming increasingly popular in the areas of biology, chemistry and medical applications. The magnetic resonance imaging (MRI) technique has progressed at a spectacular rate over the past few years, its uses have been spread over many applications throughout the body in both anatomical and functional investigations. In this paper we present an automatic method for volumetric reconstruction from 2D MR slices in standard DICOMtrade format. A 3D mesh model of the head using the contour acquired from cross-sectional slices by active contour model segmentation is performed. Finally, we propose the visualization with OpenGLtrade 3D Graphics of the surface information.","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126024083","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
INFLUENCE OF A CONVEX SURFACE SHAPE ON EIGENVIBRATIONS OF A PIEZOELECTRIC PLATE OF SBTC-CUT 凸面形状对sbtc切割压电板本征振动的影响
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335637
O. Shmaliy, Y. Shmaliy
{"title":"INFLUENCE OF A CONVEX SURFACE SHAPE ON EIGENVIBRATIONS OF A PIEZOELECTRIC PLATE OF SBTC-CUT","authors":"O. Shmaliy, Y. Shmaliy","doi":"10.1109/MEP.2006.335637","DOIUrl":"https://doi.org/10.1109/MEP.2006.335637","url":null,"abstract":"An analysis is given of an influence of a convex surface shape on eigenvibrations of the SBTC-cut piezoelectric plate. We show that the ratio of radii and direction of main curvature of a piezoelectric plate surface affect substantially the frequency shifts and amplitude distributions of the eigenvibrations. The non-linear dependence of the rotation angle of the amplitude distribution on a direction of main curvature of the plate is examined. We notice that the results obtained may be used for the explanation of a discrepancy between the measurements data provided experimentally by many authors and results calculated.","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127959971","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
Novel optical mux-demux module for fiber-optic communication applications 用于光纤通信的新型光互斥模块
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335619
R. Selvas-Aguilar, V. Durán-Ramírez, A. Martínez-Ríos, C. Calles-Arriaga, A. Castillo-Guzmán
{"title":"Novel optical mux-demux module for fiber-optic communication applications","authors":"R. Selvas-Aguilar, V. Durán-Ramírez, A. Martínez-Ríos, C. Calles-Arriaga, A. Castillo-Guzmán","doi":"10.1109/MEP.2006.335619","DOIUrl":"https://doi.org/10.1109/MEP.2006.335619","url":null,"abstract":"We demonstrated a novel design for a multi channel optical MUX/DEMUX module, which uses the principle of a Cassegrain-telescope. We carried out some optical simulations to show the feasibility to build up a multiplexer or de-multiplexer module for Dense Wavelength Division Multiplexing (4 channels). The set-up consists of a concave mirror that receives different beams which are then focused at the centre. For the case of a MUX-module, different radial positions enable injecting the system different wavelength inputs as the concave mirrors concentrates all the beams in one point (collector fibre). Moreover, for the case of a DEMUX-module, a bulk grating is positioned at one point between the concave mirror and the focal point of it, and when a stream of pulses with different wavelengths reaches this point, it automatically distributes the incoming signal in different radial positions (several collector fibers).","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130217527","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
Digital image processing with dynamical neural networks for resource management: theories aspects 动态神经网络用于资源管理的数字图像处理:理论方面
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335663
L. Morales-Mendoza, O. Ibarra-Manzano, M. Ibarra-Manzano, Y. Shmaliy
{"title":"Digital image processing with dynamical neural networks for resource management: theories aspects","authors":"L. Morales-Mendoza, O. Ibarra-Manzano, M. Ibarra-Manzano, Y. Shmaliy","doi":"10.1109/MEP.2006.335663","DOIUrl":"https://doi.org/10.1109/MEP.2006.335663","url":null,"abstract":"In this paper, we present the theories aspects of the problem from the reconstruction and enhancing of radar imaging in the natural resource management with detection of specials characteristics. The problem is oriented to the data massive processing involving with recurrent neural networks. The Maximum Entropy Variational Analysis method is implemented into the recurrent neural networks modified Hopfield-type to the reconstruction and, detection and stopping edges (enhancing) in the radar imaging. Furthermore, here we present two forms of the computational implementation of the recurrent neural network.","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128472450","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
Lateral motion pin device for tactile communication: an approach with DC mini-motors 用于触觉交流的横向运动引脚装置:一种采用直流微型电机的方法
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335650
S. Gutierrez, R. Velázquez
{"title":"Lateral motion pin device for tactile communication: an approach with DC mini-motors","authors":"S. Gutierrez, R. Velázquez","doi":"10.1109/MEP.2006.335650","DOIUrl":"https://doi.org/10.1109/MEP.2006.335650","url":null,"abstract":"This paper introduces a new concept of tactile display based on lateral motion of the contact pins. Unlike traditional tactile devices where pins are arranged in an array and move upwards/downwards, a single row of pins moves laterally on a rail to display tactile information as in a 2D matrix. The advantage of this concept is that a row of N actuators can display some information that has been traditionally done with a matrix of NtimesN actuators. An electromechanical actuator based on miniature DC motors was designed and implemented to create such lateral motion. Both tactile display design and actuation approach are presented and discussed.","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131260599","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
SO/sub 2/ classification for air quality levels estimation using artificial intelligent techniques 采用人工智能技术估算空气质量水平的SO/sub /分类
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335653
M. G. Cortina-Januchs, J. M. Barrón-Adame, S. Ledesma, R.A. Matinez-Celorio, A. Vega-Corona
{"title":"SO/sub 2/ classification for air quality levels estimation using artificial intelligent techniques","authors":"M. G. Cortina-Januchs, J. M. Barrón-Adame, S. Ledesma, R.A. Matinez-Celorio, A. Vega-Corona","doi":"10.1109/MEP.2006.335653","DOIUrl":"https://doi.org/10.1109/MEP.2006.335653","url":null,"abstract":"This paper presents a new methodology to detect and classify SO2 concentration according to the air quality level. In this classification, meteorological variables are analyzed to make a classification decision. The method consists of three steps. In first step, we group using a SOM neural networks the pollutant concentration in two classes, these classes are noise data and validated data. In second step, we create a representative feature vector using the information contingency levels that we know a priori. In third step, a new SOM neural network is trained with the representative feature vector built in second step, then the pollutant concentrations and meteorological variables (validated data) are self-organized in fourth classes according to contingency levels. Finally, we obtained the air quality level. Our experiments with this methodology exhibit good classification results. In this case a time series obtained from the environmental monitoring network of the Salamanca city, Guanajuato, Mexico is used.","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114190413","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
Erbium-doped fiber amplifier in a reflective configuration with equalization of 1549.1 NM wavelength using a fiber bragg grating 利用光纤光栅实现1549.1 NM波长均衡的反射型掺铒光纤放大器
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335621
A.J. Camas, E. Kuzin, O. Pottiez, L.C. Garcia, V.S. Mendoza, S. Vazquez
{"title":"Erbium-doped fiber amplifier in a reflective configuration with equalization of 1549.1 NM wavelength using a fiber bragg grating","authors":"A.J. Camas, E. Kuzin, O. Pottiez, L.C. Garcia, V.S. Mendoza, S. Vazquez","doi":"10.1109/MEP.2006.335621","DOIUrl":"https://doi.org/10.1109/MEP.2006.335621","url":null,"abstract":"In this work we present an optical amplifier elaborated from erbium-doped fiber (EDF) in reflective configuration. We can obtain bigger amplification with reflective configuration, because the signal is amplified twice in the same EDF. The signal reflection was carried out with a fiber Bragg grating (FBG). We use a DFB laser to equalization of 1549.1 nm wavelength. The amplifier was used successfully to investigate the operation of a nonlinear process in optical fibers.","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122659302","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
Reducing the effects of the finite absorption of the optical medium on the performance of the intensity-type refractometric transducer 减小了光介质的有限吸收对强度型折光传感器性能的影响
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335617
S. Khotiaintsev, J. Morales-Farah, C. García-Guerra, L. E. Yam-Ontiveros
{"title":"Reducing the effects of the finite absorption of the optical medium on the performance of the intensity-type refractometric transducer","authors":"S. Khotiaintsev, J. Morales-Farah, C. García-Guerra, L. E. Yam-Ontiveros","doi":"10.1109/MEP.2006.335617","DOIUrl":"https://doi.org/10.1109/MEP.2006.335617","url":null,"abstract":"We investigate experimentally the effects of absorption of the optical medium on the performance of the fiber-optical refractometric transducer. We show that the finite absorption of the optical medium that is being measured results in errors in the determination of the refractive index. We propose a new measurement method that permits to reduce these errors.","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122930436","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
Reflectance difference spectroscopy as an optical probe for the in situ determination of doping levels in GAAS 反射差谱法作为原位测定砷化镓中掺杂水平的光学探针
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/mep.2006.335613
A. Lastras-Martinez, I. Lara-Velázquez, R. Balderas-Navarro, J. Ortega-Gallegos, L. F. Lastras-Martínez
{"title":"Reflectance difference spectroscopy as an optical probe for the in situ determination of doping levels in GAAS","authors":"A. Lastras-Martinez, I. Lara-Velázquez, R. Balderas-Navarro, J. Ortega-Gallegos, L. F. Lastras-Martínez","doi":"10.1109/mep.2006.335613","DOIUrl":"https://doi.org/10.1109/mep.2006.335613","url":null,"abstract":"We report on in situ Reflectance Difference Spectroscopy measurements carried out on GaAs (001). Measurements were performed in situ at epitaxial growth temperature (580degC) in both n and p-type doping films in the range from 5times1016-1019 cm-3. We demonstrate the potential of Reflectance Difference Spectroscopy for impurity level determinations under growth conditions.","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128914628","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
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