American Journal of Signal Processing

American Journal of Signal Processing publishes articles on signal processing research and applications. It covers aspects from fundamental principles to practical implementation, intending to bring up-to-date, emerging and active technical developments, issues, and events to the research, educational, and professional communities.

Javier Ramírez

Editor-in-Chief of American Journal of Signal Processing

Associate Professor, University of Granada, Spain

Research Areas

Signal Processing, Biomedical applications

Education

2001Ph.D.Electronics Engineering, University of Granada, SPAIN
2001M.S.Electronics Engineering, University of Granada, SPAIN

Experience

2006-PresentAssociate Professor (Permanent Position), Dept.Signal Theory, Networking and Communications, University of Granada (Spain)
2001-2006Assistant Professor, Dept. Signal Theory, Networking and Communications, University of Granada (Spain)
1999-2001Ph.D. Research Fellowship, Ministry of Educ. and Sci., Dept. Electronics and Computer Technology, University of Granada (Spain)

Publications: Journals

[1]  F. Segovia, J. M. Górriz, J. Ramírez, D. Salas-Gonzalez, I. Álvarez, M. López, R. Chaves, the Alzheimer’s Disease Neuroimaging Initiative, A comparative study of feature extraction methods for the diagnosis of Alzheimer's Disease using the ADNI database, Neurocomputing, Vol. 75, No. 1, pp. 64-71, 2012.
[2]  R. Chaves, J.M. Górriz, J. Ramírez, I. A. Illán, D. Salas-Gonzalez, M. Gómez-Río, Efficient Mining of Association Rules for the early diagnosis of Alzheimer's Disease, Physics in Medicine and Biology, Vol. 56, No. 18, pp. 6047-6063, 2011.
[3]  A. Olivares, G. Olivares, J.M. Górriz, J. Ramírez, Wagyromag: wireless sensor network for monitoring and processing human body movement, Journal of Systems Architecture (Special Issue on Emerging Applications of Embedded Systems Research), Vol. , No. , pp. , 2011.
[4]  A. Ortiz, J.M. Górriz, J. Ramírez, D. Salas-Gonzalez, MR Brain Image Segmentation by Hierarchical Growing SOM and Probability Clustering, Electronics Letters, Vol. 47, No. 10, pp. 585-586, 2011.
[5]  D. Salas-Gonzalez, J. M. Górriz, J. Ramírez, I. Álvarez, M. López, F. Segovia, C. G. Puntonet, Two approaches for selecting set of voxels for the diagnosis of Alzheimer's using brain SPECT images, Digital Signal Processing, Vol. 21, No. 6, pp. 746-755, 2011.
[6]  I.A. Illán, J.M. Górriz, J. Ramírez, D. Salas-Gonzalez, M.M. López, F. Segovia, R. Chaves, M. Gómez-Rio, C.G. Puntonet and the Alzheimer’s Disease Neuroimaging Initiative, 18F-FDG PET Imaging for Computer Aided Alzheimer's Diagnosis, Information Sciences, Vol. 181, No. 4, pp. 903-916, 2011.
[7]  I.A. Illán, J.M. Górriz, M.M. López, J. Ramírez, D. Salas-Gonzalez, F. Segovia, R. Chaves, C.G. Puntonet, Computer Aided Diagnosis of Alzheimer's disease using component based SVM, Applied Soft Computing, Vol. 11, No. 2, pp. 2376-2382, 2011.
[8]  J. M. Górriz, F. Segovia, J. Ramírez, A. Lassl, D. Salas-Gonzalez, GMM-based SPECT Image Classification for the Diagnosis of Alzheimer's Disease, Applied Soft Computing, Vol. 11, No 2, pp. 2313-2325, 2011.
[9]  M. López, J. Ramírez, J. M. Górriz, I. Álvarez, D. Salas-Gonzalez, F. Segovia, R. Chaves, P. Padilla, M. Gómez-Río, the Alzheimer’s Disease Neuroimaging Initiative, Principal Component Analysis-Based Techniques and Supervised Classification Schemes for the Early Detection of the Alzheimer’s Disease, Neurocomputing, Vol. 74, No. 8, pp. 1260-1271, 2011.
[10]  J. Ramírez, J. M. Górriz, D. Salas-Gonzalez, A. Romero, M. López, I. Álvarez, M. Gómez-Río, Computer Aided Diagnosis of Alzheimer's Type Dementia Combining Support Vector Machines and Discriminant Set of Features, Information Sciences, 2011
[11]  A. Olivares, J.M. Górriz, J. Ramírez, G. Olivares, Accurate human limb angle measurement: sensor fusion through Kalman, least mean squares and recursive least squares adaptive filtering, Measurement Science & Technology, Vol. 22, No. 2, 2011.
[12]  F. Segovia, J.M. Górriz, J. Ramírez, D. Salas-Gonzalez, I. Álvarez, M. López, R. Chaves, P. Padilla, Classification of functional brain images using a GMM-based multi-variate approach, Neuroscience Letters, Vol. 474, No. 1, pp. 58-62, 2010.
[13]  I. Álvarez Illán, J.M. Górriz, J. Ramírez, D. Salas-Gonzalez, M. López, F. Segovia, P. Padilla, C.G. Puntonet, Projecting independent components of SPECT images for computer aided diagnosis of Alzheimer's disease, Pattern Recognition Letters, Vol. 31, No. 11, pp. 1342-1347, 2010.
[14]  D. Salas-Gonzalez, J. M. Górriz, J. Ramírez, I. A. Illán, M. López, F. Segovia, R. Chaves, P. Padilla, Feature selection using factor analysis for Alzheimer's diagnosis using 18F-FDG PET images, Medical Physics, Vol. 37, No. 11, pp. 6084-6095, 2010.
[15]  J.M. Górriz, J. Ramírez, E. W. Lang, C. G. Puntonet, I. Turias, Improved Likelihood Ratio Test based Voice Activity Detector applied to Speech Recognition, Speech Communication, Vol. 52, Nos. 7-8, pp. 664-677, 2010.
[16]  P. Padilla, J.M. Górriz, J. Ramírez, R. Chaves, F. Segovia, I. Álvarez, D. Salas-Gonzalez, M. López and C.G. Puntonet, Alzheimer's disease detection in functional images using 2D Gabor wavelet analysis, IET Electronics Letters, Vol. 46, Nos. 8, pp. 556-558, 2010.
[17]  D. Salas-Gonzalez, J. M. Górriz, J. Ramírez, M López, I Álvarez, F. Segovia, R. Chaves, C. G. Puntonet, Computer-aided diagnosis of Alzheimer's disease using support vector machines and classification trees, Physics in Medicine and Biology, Vol. 55, No. 10, pp. 2807-2817, 2010.
[18]  P. Padilla, J.M. Górriza, J. Ramírez, E.W. Lang, R. Chaves, F. Segovia, M. López, D. Salas-González, I. Álvarez, Analysis of SPECT brain images for the diagnosis of Alzheimer’s disease based on NMF for feature extraction, Neuroscience Letters, Vol. 479, No. 3, pp. 192-196, 2010.
[19]  J. Ramírez, J.M. Górriz, F. Segovia, R. Chaves, D. Salas-Gonzalez, M. López, I. Álvarez, P. Padilla, Computer aided diagnosis system for the Alzheimer's disease based on partial least squares and random forest SPECT image classification, Neuroscience Letters, Vol. 472, No. 2, pp. 99-103, 2010.
[20]  M. López, J. Ramírez, J. M. Górriz, I. Álvarez, D. Salas-Gonzalez, F. Segovia and R. Chaves, SVM-based CAD System for Early Detection of the Alzheimer’s Disease using Kernel PCA and LDA, Neuroscience Letters, Vol. 464, No. 4, pp. 233-238, 2009.
[21]  R. Chaves, J. Ramírez, J. M. Górriz, M. López, D. Salas-Gonzalez, I. Álvarez, F. Segovia, SVM-based computer aided diagnosis of the Alzheimer’s disease using t-test NMSE feature selection with feature correlation weighting, Neuroscience Letters, Vol. 461, No. 3, pp. 293-297, 2009.
[22]  D. Salas-Gonzalez, J. M. Górriz, J. Ramírez, M. López, I. Álvarez, F. Segovia, C. G. Puntonet, M. Gómez-Río, Analysis of SPECT brain images for the diagnosis of Alzheimer’s disease using moments and support vector machines, Neuroscience Letters, Vol. 461, No. 1, pp. 60-64, 2009.
[23]  J. Ramírez, J. M. Górriz, R. Chaves, M. López, D. Salas-Gonzalez, I. Álvarez, F. Segovia, SPECT Image Classification Using Random Forests, IET Electronics Letters, Vol. 45, No. 12, pp. 604-605. 2009.
[24]  J. M. Górriz, A. Lassl, J. Ramírez, D. Salas-Gonzalez, C. G. Puntonet, E. W. Lang, Automatic Selection of ROIs in functional imaging using Gaussian Mixture Models, Neuroscience Letters, Vol. 460, No. 2, pp. 108-111, 2009.
[25]  J.M. Górriz, J. Ramírez, S. Cruces-Álvarez, D. Erdogmus, C.G. Puntonet, E.W. Lang, A Novel LMS algorithm applied to Adaptive Noise Cancelation, IEEE Signal Processing Letters, Vol. 16, No. 1, pp. 34-37, 2009.
[26]  I. Álvarez, J. M. Górriz, J. Ramírez, D. Salas-Gonzalez, M. López, C. G. Puntonet, F. Segovia, Alzheimer's Diagnosis Using Eigenbrains and Support Vector Machines, IET Electronics Letters, Vol. 45, No. 7, pp. 342-343, 2009.
[27]  M. López, J. Ramírez, J. M. Górriz, D. Salas-Gonzalez, I. Álvarez, F. Segovia and C.G. Puntonet, Automatic Tool for the Alzheimer’s Disease Diagnosis Using PCA and Bayesian Classification Rules, IET Electronics Letters, Vol. 45, No. 8, pp. 389-391, 2009.
[28]  J. M. Górriz, J. Ramírez, E. W. Lang, C. G. Puntonet, Jointly Gaussian PDF Based Likelihood Ratio Test for Voice Activity Detection, IEEE Transactions on Audio Speech and Language Processing, Vol. 16, No. 8, pp. 1565-1578, 2008.
[29]  D. Salas-Gonzalez, J.M. Górriz, J. Ramírez, A. Lassl, C.G. Puntonet, Improved Gauss-Newton Optimization Methods in Affine Registration of SPECT Brain Images, IET Electronics Letters, Vol. 44, No. 22, pp. 1191-1192, 2008.
[30]  J.M. Górriz, J. Ramírez, S. Cruces-Álvarez, D. Erdogmus, E.W. Lang, C.G. Puntonet, Speech Enhancement in Discontinuous Transmission Systems using the Constrained Stability Least Mean Squares Algorithm, The Journal of Acoustical Society of America, Vol. 24, No. 6, pp. 3669-3683, 2008.
[31]  C. Benítez, J. Ramírez, J. C. Segura, J. M. Ibáñez, J. Almendros, A. García-Yeguas, G. Cortes, Continuous HMM-based seismic event classification at Deception Island, Antarctica, IEEE Transactions on Geoscience and Remote Sensing, vol. 45, no. 1, pp. 138-146, 2007.
[32]  J.M. Górriz, J. Ramírez, C. G. Puntonet, An effective jointly pdf-based voice activity detector for real time applications, IEE Electronics Letters, vol. 43, No. 4, pp. 251-253, 2007.
[33]  J. Ramírez, J. M. Górriz, J. C. Segura, Statistical Voice Activity Detection Based on Integrated Bispectrum Likelihood Ratio Tests for Robust Speech Recognition, Journal of the Acoustical Society of America, Vol. 121, No. 5, pp. 2946-2958, 2007.
[34]  J. Ramírez, J. C. Segura, J. M. Górriz, L. García, Improved Voice Activity Detection Using Contextual Multiple Hypothesis Testing for Robust Speech Recognition, IEEE Transactions on Audio Speech and Language Processing, Vol. 15, No. 8, pp. 2177-2189, 2007.
[35]  J. de Vicente, J. Ramírez, Effect of Friction Between Particles in the Dynamic Response of Model Magnetic Structures, Journal of Colloid and Interface Science, vol. 316, pp. 867-876, 2007.
[36]  J. Ramírez, P. Yélamos, J.M. Górriz, C.G. Puntonet, J.C. Segura, SVM-enabled Voice Activity Detection, Lecture Notes in Computer Science, vol. 3972, pp. 676-681, 2006.
[37]  J.M. Górriz, J. Ramírez, C.G. Puntonet, E.W. Lang, and K. Stadlthanner, Independent Component Analysis applied to Voice Activity Detection, Lecture Notes in Computer Science, Vol. 3991, pp. 234-241, 2006.
[38]  J.M. Górriz, J. Ramírez, I. Turias, C.G. Puntonet, J. González, E.W. Lang, C-means Clustering applied to Speech Discrimination, Lecture Notes in Computer Science, Vol. 3991, pp. 649-656, 2006.
[39]  P. Yélamos, J. Ramírez, J.M. Górriz, C.G. Puntonet, J.C. Segura, Speech Event Detection Using Support Vector Machines, Lecture Notes in Computer Science, Vol. 3991, pp. 356-363, 2006.
[40]  R. Culebras, J. Ramírez, J.M. Górriz, J.C. Segura, Fuzzy Logic Speech/Non-speech Discrimination for Noise Robust Speech Processing, Lecture Notes in Computer Science, Vol. 3991, pp. 395-402, 2006.
[41]  J.M. Górriz, J. Ramírez, J.C. Segura, C.G. Puntonet, J.J. González, Noise Subspace Fuzzy C-means Clustering for Robust Speech Recognition, Lecture Notes in Computer Science, vol. 3984, pp. 772-779, 2006.
[42]  J. Ramírez, J. M. Górriz, J. C. Segura, C. G. Puntonet, A. Rubio, Speech/Non-speech Discrimination based on Contextual Information Integrated Bispectrum LRT, IEEE Signal Processing Letters, vol. 13, No. 8, pp. 497-500, 2006.
[43]  J.M. Górriz, J. Ramírez, C. G. Puntonet, J.C. Segura, Generalized LRT-based voice activity detector, IEEE Signal Processing Letters, Vol. 13, No. 10, pp. 636-639, 2006.
[44]  J. Ramírez, P. Yélamos, J. M. Górriz, J.C. Segura, SVM-based Speech Endpoint Detection Using Contextual Speech Features, IEE Electronics Letters, vol. 42, No. 7, 2006.
[45]  J.M. Górriz, J. Ramírez, J.C. Segura, C. G. Puntonet, An effective cluster-based model for robust speech detection and speech recognition in noisy environments, Journal of the Acoustical Society of America, vol. 120, No. 1, pp. 470-481, 2006.
[46]  J.M. Górriz, J. Ramírez, C. G. Puntonet, E. W. Lang, Hard C-means Clustering for Voice Activity Detection, Speech Communication, Vol. 48, pp. 1638-1649, 2006.
[47]  J. Ramírez, U. Meyer-Baese, A. García, Efficient RNS-based Design of Programmable FIR Filters targeting FPL Technology, Journal of Circuits, Systems and Computers, Vol. 14, No. 1, pp. 167-177, 2005.
[48]  J. Ramírez, J. C. Segura, C. Benítez, Á. de la Torre, A. Rubio, An effective OSF-based VAD with Noise Suppression for Robust Speech Recognition, IEEE Transactions on Speech and Audio Processing, vol. 13, No. 6, pp. 1119-1129, 2005.
[49]  U. Meyer-Baese, S. Rao, J. Ramírez, A. García, Cost-effective Hogenauer Cascaded Integrator Comb Decimator Filter Design for Custom ICs, Electronics Letters, vol. 41, No. 3, pp. 158-160, 2005.
[50]  J. M. Górriz, J. Ramírez, J. C. Segura, S. Hornillo, Voice Activity Detection using Higher Order Statistics, Lecture Notes in Computer Science, vol. 3512, pp. 837-844, 2005.
[51]  J. Ramírez, J. C. Segura, C. Benítez, L. García, A. Rubio, Statistical Voice Activity Detection using a Multiple Observation Likelihood Ratio Test, IEEE Signal Processing Letters, vol. 12, No. 10, pp. 689-692, 2005.
[52]  J. M. Górriz, C. G. Puntonet, J. Ramírez, J. C. Segura, Bispectra analysis-based VAD for robust speech recognition, Lecture Notes in Computer Science, vol. 3562, pp. 567-576, 2005.
[53]  J. M. Górriz, C. G. Puntonet J. Ramírez, J. C. Segura, Bispectrum Estimators for Voice Activity Detection and Speech Recognition, Lecture Notes in Artificial Intelligence, No. 3817, pp. 174–185, 2005.
[54]  J. M. Górriz, J. Ramírez, J. C. Segura, C. G. Puntonet, An Improved MO-LRT VAD Based on a Bispectra Gaussian Model, Electronics Letters, vol. 41, No. 15, pp. 877-879, 2005.
[55]  J. M. Górriz, J. Ramírez, C. G. Puntonet, F. Theis, E.W.Lang, Bispectrum-Based Statistical Tests for VAD, Lecture Notes in Computer Science, vol. 3697, pp. 541-546, 2005.
[56]  J. Ramírez, J. C. Segura, C. Benítez, Á. de la Torre, A. Rubio, A New Kullback-Leibler VAD for Robust Speech Recognition, IEEE Signal Processing Letters, vol. 11, No. 2, pp. 266-269, 2004.
[57]  J. C. Segura, C. Benítez, A. de la Torre, , A. Rubio, J. Ramírez, Cepstral Domain Segmental Nonlinear Feature Transformations for Robust Speech Recognition, IEEE Signal Processing Letters, vol. 11, No. 5, pp. 517-520, 2004.
[58]  J. Ramírez, J. C. Segura, C. Benítez, Á. de la Torre, A. Rubio, Efficient Voice Activity Detection Algorithms Using Long-Term Speech Information, Speech Communication, vol. 42, Nos. 3-4, pp. 271-287, 2004.
[59]  U. Meyer Baese, S. Rao, J. Ramírez, A. García, Area*Time optimized Hogenauer Channelizer Design using FPL Devices, Lecture Notes in Computer Science, vol. 3203, pp. 384-393, 2004.
[60]  J. Ramírez, A. García, U. Meyer-Baese, F. Taylor, A. Lloris, Implementation of RNS-based Distributed Arithmetic Discrete Wavelet Transform Architectures Using Field-Programmable Logic, Journal of VLSI Signal Processing Systems for Signal, Image and Video Technology, vol. 33, pp. 171-190, 2003.
[61]  J. Ramírez, U. Meyer-Bäse, F. Taylor, A. García, A. Lloris, Design and Implementation of High-performance RNS Wavelet Processors Using Custom IC Technologies, Journal of VLSI Signal Processing Systems for Signal, Image and Video Technology, vol. 34, pp. 227-237, 2003.
[62]  J. Ramírez, A. García, A Fast QRNS-Based Algorithm for the DCT and its Field-Programmable Logic Implementation, Journal of Circuits, Systems, and Computers, Vol. 12, No. 1, pp. 111-123, Feb. 2003.
[63]  J. Ramírez, U. Meyer-Baese, A. García, A. Lloris, Design and Implementation of RNS-based Adaptive Filters, Lecture Notes in Computer Science, vol. 2778, pp. 1135-1138, 2003.
[64]  U. Meyer-Baese, J. Ramírez, Optimal Multi-Step Linear Feedback Shift Register Design, Frequenz, Vol. 57, Nos. 11-12, pp. 248-253, 2003.
[65]  J. Ramírez, U. Meyer-Baese, High Performance, Reduced Complexity Programmable RNS-FPL Merged FIR Filters, Electronics Letters, vol. 38, No. 4, pp. 199-200, 2002.
[66]  J. Ramírez, A. García, S. López-Buedo, A. Lloris, RNS-enabled Digital Signal Processor Design, Electronics Letters, Vol. 38, No. 6, pp. 266-268, 2002.
[67]  J. Ramírez, A. García, U. Meyer-Baese, A. Lloris, Fast RNS-based FPL Communications Receiver Design and Implementation, Lecture Notes in Computer Science, Vol. 2428, pp. 472-481, 2002.
[68]  U. Meyer-Baese, J. Ramírez, A. García, Low Power High Speed Algebraic Integer Frequency Sampling Filters Using FPLD, Lecture Notes in Computer Science, Vol. 2438, pp. 897-904, 2002.
[69]  D. González, A. García, G. Jullien, J. Ramírez, L. Parrilla, A. Lloris, A New Methodology for Efficient Synchronization of RNS-based Systems, Lecture Notes in Computer Science, vol. 2451, pp. 188-197, 2002.
[70]  J. Ramírez, A. García, P. G. Fernández, L. Parrilla, A. Lloris, RNS-FPL Merged Architectures for Orthogonal DWT, Electronics Letters, vol. 34, No. 14, pp. 1198-1199, 2000.
[71]  J. Ramírez, A. García, P. G. Fernández, L. Parrilla, A. Lloris, Analysis of RNS-FPL Synergy for High Throughput DSP Applications: Discrete Wavelet Transform, Lecture Notes in Computer Science, vol. 1896, pp. 342-351, 2000.

Publications: Conferences/Workshops/Symposiums

[1]  J. M. Górriz, J. Ramírez, E. W. Lang, I. R. Keck, C. G. Puntonet, fMRI Data Analysis using a novel Clustering technique, IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC 2009), Orlando, USA, 2009.
[2]  M. López, J. Ramírez, J. M. Górriz, D. Salas-Gonzalez, I. Álvarez, F. Segovia, R. Chaves, Multivariate Approaches for Alzheimer's Disease Diagnosis Using Bayesian Classifiers, IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC 2009), Orlando, USA, 2009.
[3]  M. López, J. Ramírez, J. M. Górriz, D. Salas-Gonzalez, I. Álvarez, F. Segovia, R. Chaves, Neurological Image Classification for the Alzheimer's Disease Diagnosis Using Kernel PCA and Support Vector Machines, IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC 2009), Orlando, USA, 2009.
[4]  F. Segovia, J.M. Górriz, J. Ramírez, D. Salas-Gonzalez, I. A. Illán, M. López, R. Chaves, C. G. Puntonet, Automatic selection of ROIs using a model-based clustering approach, IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC 2009), Orlando, USA, 2009.
[5]  R. Chaves, J. Ramírez, J. M. Górriz, M. López, I. Álvarez, D. Salas-Gonzalez, F. Segovia, SPECT Image Classification Based on NMSE Feature Correlation Weighting and SVM, IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC 2009), Orlando, USA, 2009.
[6]  J. Ramírez, R. Chaves, J. M. Górriz, M. López, I. Álvarez, D. Salas-Gonzalez, F. Segovia, Computer Aided Diagnosis of the Alzheimer's Disease Combining SPECT-Based Feature Selection and Random Forest Classifiers, IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC 2009), Orlando, USA, 2009.
[7]  D. Salas-Gonzalez, J. M. Górriz, J. Ramírez, I. Álvarez, M. López, F. Segovia, M. Gómez-Río, Skewness as feature for the diagnosis of Alzheimer's disease using SPECT images, IEEE International Conference on Image Processing (ICIP 2009), El Cairo, Egipto, 2009.
[8]  D. Salas-Gonzalez, J. M. Górriz, J. Ramírez, I. Álvarez, M. López, F. Segovia and C. G. Puntonet, Selecting regions of interest for the diagnosis of Alzheimer using brain SPECT images, Sixth International Symposium on Neural Networks (ISNN 2009), Wuhan, China, 2009.
[9]  I. Álvarez, J. M. Górriz, J. Ramírez, D. Salas-Gonzalez, M. López, C. G. Puntonet, F. Segovia, Independent Component Analysis of SPECT Images to assist the Alzheimer's Disease Diagnosis, Sixth International Symposium on Neural Networks (ISNN 2009), Wuhan, China, 2009.
[10]  J. Ramírez, R. Chaves, J. M. Górriz, I. Álvarez, D. Salas-Gonzalez, M. López, F. Segovia, Effective detection of the Alzheimer disease by means of coronal NMSE SVM feature classification, Sixth International Symposium on Neural Networks (ISNN 2009), Wuhan, China, 2009.
[11]  M. López, J. Ramírez, J. M. Górriz, I. Álvarez, D. Salas-Gonzalez, F. Segovia, C. G. Puntonet, Computer Aided Diagnosis of Alzheimer Disease Using Principal Component Analysis and Bayesian Classifiers, Sixth International Symposium on Neural Networks (ISNN 2009), Wuhan, China, 2009.
[12]  D. Salas-Gonzalez, J. M. Górriz, J. Ramírez, M. López, I. Álvarez, F. Segovia, C. G. Puntonet, Selecting regions of interest for the diagnosis of Alzheimer's disease in brain SPECT images using Welch's t-test, 10th International Work-Conference on Artificial Neural Networks (IWANN2009), Salamanca, 2009.
[13]  M. López, J. Ramírez, J.M. Górriz, I. Álvarez, D. Salas-Gonzalez, F. Segovia and C.G. Puntonet, Automatic System for Alzheimer’s Disease Diagnosis Using Eigenbrains and Bayesian Classification Rules, 10th International Work-Conference on Artificial Neural Networks (IWANN2009), Salamanca, 2009.
[14]  I. Álvarez, J. M. Górriz, J. Ramírez, M. López, D. Salas-Gonzalez, C. G. Puntonet, F. Segovia, B. Prieto, Alzheimer's Diagnosis Using Eigenbrains and Support Vector Machines, 10th International Work-Conference on Artificial Neural Networks (IWANN2009), Salamanca, 2009.
[15]  J. Ramírez, R. Chaves, J. M. Górriz, M. López, D. Salas-Gonzalez, I. Álvarez, F. Segovia, SPECT image classification techniques for computer aided diagnosis of the Alzheimer disease, 10th International Work-Conference on Artificial Neural Networks (IWANN2009), Salamanca, 2009
[16]  L. Gutiérrez, J. Ibáñez, J. Ramírez, C. Benítez, V. Tenorio, Volcano-seismic signal detection and classification processing using Hidden Markov Models. Application to San Cristóbal volcano, Nicaragua, 2009 IEEE International Geoscience & Remote Sensing Symposium, IGARSS2009, Cape Town, South Africa, 2009.
[17]  D. Salas-Gonzalez, J. M. Górriz, J. Ramírez, M. López, I. Álvarez, F. Segovia, C. G. Puntonet, Analysis of Brain SPECT Images for the diagnosis of Alzheimer disease using first and second order moments, 3rd. International Work-Conference on the Interplay between Natural and Artificial Computation (IWINAC2009), Santiago de Compostela, SPAIN, 2009.
[18]  J. Ramírez, R. Chaves, J. M. Górriz, I. Álvarez, M. López, D. Salas-Gonzalez, F. Segovia, Functional Brain Image Classification Techniques for Early Alzheimer Disease Diagnosis, 3rd. International Work-Conference on the Interplay between Natural and Artificial Computation (IWINAC2009), Santiago de Compostela, SPAIN, 2009.
[19]  M. López, J. Ramírez, J. M. Górriz, I. Álvarez, D. Salas-Gonzalez, F. Segovia, M. Gómez-Río, Support Vector Machines and Neural Networks for the Alzheimer's Disease Diagnosis Using PCA, 3rd. International Work-Conference on the Interplay between Natural and Artificial Computation (IWINAC2009), Santiago de Compostela, SPAIN, 2009.
[20]  J.M. Górriz, J. Ramírez, A. Lassl, I. Álvarez, F. Segovia, D. Salas, M. López, Classification of SPECT Images Using Clustering Techniques Revisited, 3rd. International Work-Conference on the Interplay between Natural and Artificial Computation (IWINAC2009), Santiago de Compostela, SPAIN, 2009.
[21]  F. Segovia, J. M. Górriz, J. Ramírez, D. Salas-González, I. Álvarez, M. López, G. C. Puntonet, Tool for Study and Classification of Medical Images, The fifth IADAT International Conference on Education IADATe-2009, Bilbao, SPAIN, 2009.
[22]  J. Ramírez, J.M. Górriz, M. Gómez-Río, A. Romero, R. Chaves, A. Lassl, A. Rodríguez, C. G. Puntonet, F. Theis, E. Lang, Effective Emission Tomography Image Reconstruction Algorithms for SPECT Data, Lecture Notes in computer Science. M. Bubak et al. (Eds.): ICCS 2008, Part I, LNCS 5101, pp. 741–748, 2008. Springer-Verlag Berlin, Heidelberg 2008, Cracovia, Polonia, 2008.
[23]  J.M. Górriz, J. Ramírez, C.G. Puntonet, S. Cruces-Álvarez, D. Erdogmus, E.W. Lang, A trade-off between convergence speed and Misadjustment for filtering discontinuous speech signals, The 2008 European Signal Processing Conference (EUSIPCO-2008), Lausanne, Suiza, 2008.
[24]  J.M. Górriz, J. Ramírez, A. Lassl, D. Salas, E.W. Lang, C.G. Puntonet, M. López, Automatic Computer Aided Diagnosis Tool Using Component-Based SVM, IEEE 2008 Medical Imaging Conference, Dresden, Germany, 2008.
[25]  D. Salas-González, J.M. Górriz, J. Ramírez, A. Lassl, C.G. Puntonet, A Comparison of Nonlinear Least-Square Optimization Methods in Affine Registration of SPECT Images, IEEE 2008 Medical Imaging Conference, Dresden, Germany, 2008.
[26]  A. Lassl, J.M. Górriz, J. Ramírez, D. Salas, E.W. Lang, C.G. Puntonet, Clustering Approach for the Classification of SPECT Images, IEEE 2008 Medical Imaging Conference, Dresden, Germany, 2008.
[27]  I. Alvarez, M. López, J.M. Górriz, J. Ramírez, D. Salas-González, F. Segovia, C.G. Puntonet, Automatic Classification System for the Diagnosis of Alzheimer Disease Using Component-Based SVM Aggregations, 15th International Conference on Neural Information Processing of the Asia-Pacific Neural Network Assembly (ICONIP 2008), Auckland, New Zealand, 2008.
[28]  J. Ramírez, J. M. Górriz, M. López, D. Salas-González, I. Álvarez, F. Segovia, C. G. Puntonet, Early detection of the Alzheimer disease combining feature selection and kernel machines, 15th International Conference on Neural Information Processing of the Asia-Pacific Neural Network Assembly (ICONIP 2008), Auckland, New Zealand, 2008.
[29]  D. Salas-González, J. M. Górriz, J. Ramírez, M. López, I. Álvarez, F. Segovia, and C. G. Puntonet, Computer Aided Diagnosis of Alzheimer Disease Using Support Vector Machines and Classification Trees, 15th International Conference on Neural Information Processing of the Asia-Pacific Neural Network Assembly (ICONIP 2008), Auckland, New Zealand, 2008.
[30]  J. Ramírez, J. C. Segura, J. M. Górriz, Revised Contextual LRT for Voice Activity Detection, IEEE International Conference on Acoustics Speech and Signal Processing (ICASSP 2007), vol. 9, pp. 801-804 Hawai, EE.UU., 2007.
[31]  O. Pernía, J.M. Górriz, J. Ramírez, C.G. Puntonet, I. Turias, An efficient VAD based on a Generalized Gaussian PDF, An ISCA Tutorial and Research Workshop on NON-LINEAR SPEECH PROCESSING (NOLISP 2007), Paris France, 2007.
[32]  S.Nassabay, I.Keck, C.G.Puntonet, R.M.Clemente, J.M.Górriz, J. Ramírez, Noisy Image Processing Using the Independent Component Analysis Algorithm AMUSE, The Third International Workshop on Artificial Neural Networks and Intelligent Information Processing (ANNIP-ICINCO), Angers, France, 2007.
[33]  E. de Vicente Álvarez-Manzaneda, I. Dolz, R. Cambrodí, C. Almárcegui, J. Ramírez, J.M. Vergara, Effect of Sodium Oxybate in the Sleep Quantified EEG in Narcoleptic Patients, CIMS 2007. Congreso Internacional de Medicina del Sueño, Barcelona, 2007.
[34]  O. Pernía, J. M. Górriz, J. Ramírez, C. G. Puntonet, I. Turias, An Efficient VAD Based on a Hang-Over Scheme and a Likelihood Ratio Test, 9th International Work-Conference on Artificial Neural Networks (IWANN'2007), LNCS, vol. 4507, pp. 31-38, San Sebastián, 2007.
[35]  O. Pernía, J. M. Górriz, J. Ramírez, C. G. Puntonet, I. Turias, Improved Likelihood Ratio Test Detector Using a Jointly Gaussian Probability Distribution Function, International Work-conference on the Interplay between Natural and Artificial Computation (IWINAC 2007), LNCS, vol. 4528, pp. 37-44, La Manga del Mar Menor, Murcia, 2007.
[36]  J. Ramírez, P. Yélamos, J.M. Górriz, C.G. Puntonet, J.C. Segura, SVM-enabled Voice Activity Detection, Third International Symposium on Neural Networks 2006 (ISNN 2006), Chengdu, China, 2006.
[37]  C. Benítez, J. Ramírez, J.C. Segura, A. Rubio, J.M. Ibáñez, A. García-Yeguas, J. Almendros, G. Alguacil, Continuous HMM-based seismic events classification at Deception Island, Antarctica, 10th International Meeting: Volcán de Colima, Colima, México, 2006.
[38]  L. Gutiérrez, J.M. Ibáñez, C. Benítez, J. Ramírez, J.C. Segura, A. Rubio, A. García-Yeguas, J. Almendros, G. Alguacil, Discrimination between different volcanic signals using Hidden Markov Model: an example of Stromboli and Etna Volcanoes, 10th International Meeting: Volcán de Colima, Colima, México, 2006.
[39]  J. Ramírez, J. C. Segura, J. M. Górriz, C. Benítez, A. Rubio, GAIALAB: A Weblab Project for Digital Communications Distributed Learning, IEEE International Conference on Acoustics Speech and Signal Processing (ICASSP 2006), Toulouse, Francia, 2006.
[40]  R. Culebras, J. Ramírez and J. M. Górriz, Effective Speech/Pause Discrimination Combining Noise Suppression and Fuzzy Logic Rules, IEEE International Conference on Acoustics Speech and Signal Processing (ICASSP 2006), Toulouse, Francia, 2006.
[41]  J. M. Górriz, J. Ramírez, J. C. Segura, C. G. Puntonet and L. García, Effective Speech/Pause Discrimination Using an Integrated Bispectrum Likelihood Ratio Test, IEEE International Conference on Acoustics Speech and Signal Processing (ICASSP 2006), Toulouse, Francia, 2006.
[42]  C. Benítez, J. Ramírez, J. C. Segura, A. Rubio, J. M. Ibáñez, J. Almendros, A. García-Yeguas, Continuous HMM-based volcano monitoring at Deception Island, Antarctica, IEEE International Conference on Acoustics Speech and Signal Processing (ICASSP 2006), Toulouse, Francia, 2006.
[43]  L. García, J. C. Segura, J. Ramírez, A. de la Torre, C. Benítez, Parametric nonlinear feature equalization for robust speech recognition, IEEE International Conference on Acoustics Speech and Signal Processing (ICASSP 2006), Toulouse, Francia, 2006.
[44]  J.M. Górriz, J. Ramírez, C.G. Puntonet, E.W. Lang, and K. Stadlthanner, Independent Component Analysis applied to Voice Activity Detection, International Conference on Computational Science (ICCS 2006), Reading, UK, 2006.
[45]  J.M. Górriz, J. Ramírez, I. Turias, C.G. Puntonet, J. González, E.W. Lang, C-means Clustering applied to Speech Discrimination, International Conference on Computational Science (ICCS 2006), Reading, UK, 2006.
[46]  P. Yélamos, J. Ramírez, J.M. Górriz, C.G. Puntonet, J.C. Segura, Speech Event Detection Using Support Vector Machines, International Conference on Computational Science (ICCS 2006), Reading, UK, 2006.
[47]  Fuzzy Logic Speech/Non-speech Discrimination for Noise Robust Speech Processing, R. Culebras, J. Ramírez, J.M. Górriz, J.C. Segura, International Conference on Computational Science (ICCS 2006), Reading, UK, 2006.
[48]  J.M. Górriz, J. Ramírez, J.C. Segura, C.G. Puntonet, J. González, E.W. Lang, Noise Subspace Fuzzy C-means Clustering for Robust Speech Recognition, International Conference on Computational Science and its Applications (ICCSA 2006), Glasgow, Reino Unido, 2006.
[49]  L. Gutiérrez, J.M. Ibáñez, J. Ramírez, C. Benítez, J. Almendros, A. García-Yeguas, HMM-based classification of seismic events recorded at Stromboli and Etna Volcanoes, IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2006), pp. 2765-2768, Denver, EE.UU., 2006.
[50]  A. Potamianos, G. Bouselmi, D. Dimitriadis, D. Fohr, R. Gemello, I. Illina, F. Mana, P. Maragos, M. Matassoni, V. Pitsikalis, J. Ramírez, E. Sanchez-Soto, J. Segura, and P. Svaizer, Towards Speaker and Environmental Robustness in ASR: The Hiwire Project, Workshop on Automatic Speech Recognition & Intrinsic Speech Variations. Satellite workshop of the ICASSP 2006 conference, Toulouse, Francia, 2006.
[51]  J. Ramírez, P. Yélamos, J. M. Górriz, J. C. Segura, L. García, Speech/Non-Speech discrimination combining advanced feature extraction and SVM learning, Interspeech 2006, Pittsburgh, EE.UU., 2006.
[52]  J. M. Górriz, J. Ramírez, C. G. Puntonet, J.C. Segura, An Efficient Bispectrum Phase Entropy-based Algorithm for VAD, Interspeech 2006, Pittsburgh, EE.UU., 2006.
[53]  L. García, J.C. Segura , C. Benítez, J. Ramírez, A. de la Torre, Normalization of the inter-frame information using smoothing filtering, Interspeech 2006, Pittsburgh, EE.UU., 2006.
[54]  A. de la Torre, J. Ramírez, C. Benítez, J. C. Segura, L. García, A. J. Rubio, Noise robust model-based Voice Activity Detection, Interspeech 2006, Pittsburgh, EE.UU., 2006.
[55]  J. Vicente and J. Ramírez, Spectral Analysis of Magnetically Induced Structures in Colloidal Suspensions Under Confinement in Oscillatory Shear Flow, 20th Conference of the European Colloid and Interface Society and 18th European Chemistry at Interfaces Conference, Budapest, Hungria, 2006.
[56]  J. M. Górriz, C. G. Puntonet, J. Ramírez, J. C. Segura, Voice Activity Detection Using Higher Order Statistics, 8th International Work-Conference on Artificial Neural Networks (IWANN'2005), Barcelona, Spain, 2005.
[57]  J. M. Górriz, C. G. Puntonet, J. Ramírez, J. C. Segura, Statistical Tests for Voice Activity Detection, Non-linear Speech Processing (NOLISP2005), Barcelona, Spain, 2005.
[58]  J. M. Górriz, C. G. Puntonet, J. Ramírez, J. C. Segura, Bispectra analysis-based VAD for robust speech recognition, First International Work-Conference on the Interplay Between Natural and Artificial Computation (IWINAC), Las Palmas de Gran Canaria, 2005.
[59]  J. M. Górriz, J. Ramírez, C. G. Puntonet, F. Theis, E.W.Lang, Bispectrum-Based Statistical Tests for VAD, International Conference on Artificial Neural Networks (ICANN’05), Varsovia, Polonia, 2005.
[60]  J. M. Górriz, T. Subba-Rao, C. G. Puntonet, J. Ramírez, A Voice Activity Detector Using Periodogram of Squares, 2005 International Conference on Intelligent Computing (ICIC’05), Hefei, China, 2005.
[61]  A. García, J. Ramírez, U. Meyer-Bäse, E. Castillo, A. Lloris, Efficient Embedded FPL Resource Usage for RNS-based Polyphase DWT Filter Banks, 15th International Conference on Field Programmable Logic and Applications (FPL’05), Tampere, Finlandia, 2005.
[62]  J. Ramírez, U. Meyer-Baese, A. García, Efficient wavelet architectures using field- programmable logic and residue number system arithmetic, SPIE's 18th Annual International Symposium on Aerospace/Defense Sensing, Simulation, and Controls, Orlando, EE.UU., 2004.
[63]  J. Ramírez, J. C. Segura, C. Benítez, A. de la Torre, A. Rubio, Voice activity detection with noise reduction and long-term spectral divergence estimation, International Conference on Acoustics, Speech and Signal Processing (ICASSP 2004), Montreal, Canada, 2004.
[64]  J. Ramírez, J. C. Segura, C. Benítez, A. de la Torre, A. Rubio, A new voice activity detector using subband order-statistics filters for robust speech recognition, International Conference on Acoustics, Speech and Signal Processing (ICASSP 2004), Montreal, Canada, 2004.
[65]  U. Meyer Baese, S. Rao, J. Ramírez, A. García, Area*Time optimized Hogenauer Channelizer Design using FPL Devices, 14th International Conference on Field Programmable Logic and Applications (FPL2004), Amberes, Bélgica, 2004.
[66]  J. Ramírez, J. C. Segura, C. Benítez, A. Peinado, A. Rubio, A Web Lab Project for Digital Communication Distributed Learning, International Conference on Education, Bilbao, Spain, 2004.
[67]  J. Ramírez, J. C. Segura, C. Benítez, A. de la Torre, A. Rubio, Improved Voice Activity Detection Combining Noise Reduction and Subband Divergence Measures, International Conference on Spoken Language Processing (ICSLP), Jeju Island, Corea del Sur, Octubre de 2004
[68]  C. Benítez, J. C. Segura, A. de la Torre, J. Ramírez, A. Rubio, Including Uncertainty of Speech Observations in Robust Speech Recognition, International Conference on Spoken Language Processing (ICSLP), Jeju Island, Corea del Sur, 2004.
[69]  J. Ramírez, U. Meyer-Bäse, A. García, Implementation of polyphase RNS-based DWT filter banks with efficient embedded FPL resource utilization, Information Systems: New Generations (ISNG2004), Las Vegas, EE.UU., 2004.
[70]  U. Meyer-Baese, A. Meyer-Baese, J. Ramírez, A. García, A High Radix CORDIC Architecture to Compute the Gaussian Potential Function in Neural Networks, 17th Annual International Symposium on Aerospace/Defense Sensing, Simulation, and Controls, Orlando, EE.UU., 2003.
[71]  J. Ramírez, U. Meyer-Baese, A. García, A. Lloris, Design and Implementation of RNS-based Adaptive Filters, 13th International Conference on Field Programmable Logic and Applications, Lisboa, Portugal, 2003.
[72]  J. Ramírez, J. C. Segura, C. Benítez, Á. de la Torre, A. Rubio, A New Adaptive Long-Term Spectral Estimation Voice Activity Detector, 8th European Conference on Speech Communication and Technology, Eurospeech 2003, Ginebra, Suiza, 2003.
[73]  J. C. Segura, J. Ramírez, C. Benítez, Á. de la Torre, A. Rubio, Improved feature extraction based on spectral noise reduction and non-linear feature normalization, 8th European Conference on Speech Communication and Technology, Eurospeech 2003, Ginebra, Suiza, 2003.
[74]  J. Ramírez, U. Meyer-Bäse, "Implementation of Reduced Complexity, High Performance Programmable Wavelet FIR Filters Using Field Programmable Logic", 2002 SPIE's 16th Annual International Symposium on Aerospace/Defense Sensing, Simulation, and Controls (Orlando, EE.UU.).
[75]  J. Ramírez, U. Meyer-Bäse, "Benchmarks for Programmable FIR Filters Built In RNS-FPL Technology", 2002 International Symposium on Circuits and Systems (Phoenix, EE.UU.).
[76]  D. González, A. García, G. Jullien, J. Ramírez, L. Parrilla, A. Lloris, "Clock Distribution in RNS-based VLSI Systems", Proc. of 2002 WSEAS International Conference on Electronics and Hardware Systems (Chiclana, España), pp. 1511-1516 2002.
[77]  J. Ramírez, A. García, U. Meyer-Baese, A. Lloris, "Fast RNS-based FPL Communications Receiver Design and Implementation", 12th International Conference on Field Programmable Logic and Applications (FPL2002) (Montpellier, Francia).
[78]  U. Meyer-Baese, J. Ramírez, A. García, "Low Power High Speed Algebraic Integer Frequency Sampling Filters Using FPLDs", 12th International Conference on Field Programmable Logic and Applications (FPL2002) (Montpellier, Francia).
[79]  D. González, A. García, G. Jullien, J. Ramírez, L. Parrilla, A. Lloris, "A New Methodology for Efficient Synchronization of RNS-based VLSI Systems", 12th International Workshop on Power And Timing Modeling, Optimization and Simulation PATMOS2002 (Sevilla, España).
[80]  D. González, A. García, G. Jullien, J. Ramírez, L. Parrilla, A. Lloris, "A New Clock Distribution Strategy in RNS-based VLSI Systems", XVII Design of Circuits and Integrated Circuits Conference DCIS 2002 (Santander, España).
[81]  J. Ramírez, A. García, U. Meyer-Bäse, F. Taylor, P. G. Fernández, A. Lloris, "Design of RNS-based Distributed Arithmetic DWT Filterbanks", Proc. of the 2001 International Conference on Acoustics, Speech and Signal Processing ICASSP 2001, (Salt Lake City, EE.UU.), vol. 2, pp. 1193-1196, Mayo 2001.
[82]  J. Ramírez, A. García, P. G. Fernández, L. Parrilla, A. Lloris, "A DCT Arquitecture Based on Complex Residue Number Systems", Proc. of the WSES International Conference on Speech, Signal and Image Processing SSIP 2001, (Malta), pp. 2121-2126, Sep. 2001.
[83]  P. G. Fernández, J. Ramírez, A. García, L. Parrilla, A. Lloris, "RNS Implementation of Two Dimensional Discrete Cosine Transform over FPL Devices", Proc. of the 5th World Multiconference on Circuits, Signals, Communications and Computers CSCC 2001, (Creta, Grecia), pp. 4201-4206. Jul. 2001.
[84]  P. G. Fernández, J. Ramírez, A. García, L. Parrilla, A. Lloris, "Implementation of the One Dimensional Discrete Cosine Transform Using the Residue Number System", Proc. of the 8th IEEE International Conference on Electronics, Circuits and Systems, (Malta), pp. 433-436, Sep. 2001.
[85]  J. Ramírez, P. G. Fernández, U. Meyer-Bäse, F. Taylor, A. García, A. Lloris, "Index-based RNS DWT Architectures for Custom IC Designs", Proc. of the IEEE Workshop on Signal Processing Systems SiPS 2001, (Amberes, Bélgica), pp. 70-79.
[86]  J. Ramírez, A. García, P. G. Fernández, L. Parrilla, A. Lloris, "RNS-FPL Merged Polyphase DWT Architectures", Proc. of the 2001 European Conference on Circuit Theory and Design ECCTD 2001, (Espoo, Finlandia), vol. II, pp. 329-332, 2001.
[87]  L. Parrilla, J. Ramírez, A. García, P. G. Fernández, A. Lloris, "RNS-based PID Controllers with Adaptative Support over FPL Devices", Proc. of the XVI Design of Circuits and Integrated Circuits Conference DCIS 2001, (Oporto, Portugal), pp. 236-241, Nov. 2001
[88]  J. Ramírez, A. García, P. G. Fernández, L. Parrilla, A. Lloris, "A New Architecture to Compute the Discrete Cosine Transform using the Quadratic Residue Number System", Proc. of the 2000 International Symposium on Circuits and Systems ISCAS 2000, (Ginebra, Suiza) vol. 5, pp. 321-324, May 2000.
[89]  J. Ramírez, A. García, P. G. Fernández, A. Lloris, "An Efficient RNS Architecture to Compute the Discrete Wavelet Transform on Programmable Devices", Proc. of the 2000 European Signal Processing Conference EUSIPCO 2000, (Tampere, Finlandia), pp. 255-258, Sep. 2000.
[90]  J. Ramírez, A. García, P. G. Fernández, A. Lloris, "FPL Implementation of a SIMD RISC RNS-enabled DSP", Proc. of the 4th World Multiconference on Circuits, Signals, Communications and Computers CSCC 2000, (Vouliagmeni, Grecia), pp. 1281-1286. Jul. 2000.
[91]  J. Ramirez, A. García, P. G. Fernández, L. Parrilla, A. Lloris, "Implementation of RNS Analysis and Synthesis Filter Banks for the Orthogonal Discrete Wavelet Transform over FPL Devices", Proc. of the 43rd Midwest Symposium on Circuits and Systems MWSCAS 2000, (Lansing, EE.UU.), Ag. 2000.
[92]  J. Ramírez, A. García, P. G. Fernández, L. Parrilla, A. Lloris, "Analysis of RNS-FPL Synergy for High Throughput DSP Applications: Discrete Wavelet Transform", 10th International Conference on Field Programmable Logic and Applications, (Villach, Austria), pp. 342-351, 2000.
[93]  P. G. Fernández, A. García, J. Ramírez, L. Parrilla, A. Lloris, "A RNS-based Matrix-Vector-Multiply FCT Architecture for DCT Computation", Proc. of the 43rd Midwest Symposium on Circuits and Systems MWSCAS 2000, (Lansing, EE.UU), Ag. 2000.
[94]  J. Ramírez, A. García, P. G. Fernández, L. Parrilla, A. Lloris, "A Novel QRNS-based 1-D DCT Processor over Field Programmable Logic Devices", Proc. of the XV Design of Circuits and Integrated Systems Conference DCIS 2000, (Montpellier, Francia), pp. 610-615, Nov. 2000.
[95]  A. García, P. G. Fernández, L. Parrilla, J. Ramírez, A. Lloris, "RNS-based Discrete PID Controllers with Efficient Conversion Schemes on FPL", Proc. of the XV Design of Circuits and Integrated Systems Conference DCIS 2000, (Montpellier, Francia), pp. 258-263, Nov. 2000.
[96]  P. G. Fernández, A. García, J. Ramírez, L. Parrilla, A. Lloris, "Fast RNS-based DCT Computation with Fewer Multiplication Stages", Proc. of the XV Design of Circuits and Integrated Systems Conference DCIS 2000, (Montpellier, Francia), pp. 276-281, Nov. 2000.
[97]  P. G. Fernández, A. García, J. Ramírez, A. Lloris, "Fast RNS-based 2D-DCT Computation on Field-Programmable Devices", IEEE Workshop on Signal Processing Systems SiPS 2000, (Lafayette, EE.UU.), pp. 365-373, Oct. 2000.
[98]  J. Ramírez, A. García, P. G. Fernández, L. Parrilla, A. Lloris, "A High Performance Polyphase RNS-FPL Architecture for the Orthogonal 1-D DWT with Efficient Memory Allocation", IASTED International Conference, Signal Processing and Communications SPC 2000, (Marbella, SPAIN), pp. 523-528, Sep. 2000.
[99]  A. García, L. Parrilla, J. Ramírez, P. G. Fernández, A. Lloris, "FPL Implementation of High-Performance PID Controllers", IASTED International Conference, Signal Processing and Communications SPC 2000, (Marbella, SPAIN), pp. 519-522, Sep. 2000.
[100]  P. G. Fernández, A. García, J. Ramírez, L. Parrilla, A. Lloris, "Scaled 2D-DCT on Field-Programmable Devices Using the Residue Number System", IASTED International Conference, Signal Processing and Communications SPC 2000, (Marbella, SPAIN), pp. 529-532, Sep. 2000.
[101]  J. Ramírez, A. García, P. G. Fernández, L. Parrilla, A. Lloris, "Implementation of Canonical and Retimed RNS Architectures for the Orthogonal 1-D DWT over FPL Devices", 34th Asilomar Conference on Signals, Systems, and Computers, (Pacific Grove, EE.UU.), pp. 384-388, Oct. 2000.
[102]  P. G. Fernández, J. Ramírez, A. García, L. Parrilla, A. Lloris, "A New RNS Architecture for the Computation of the Scaled 2D-DCT on Field Programmable Logic", 34th Asilomar Conference on Signals, Systems, and Computers, (Pacific Grove, EE.UU.), pp. 379-383, Oct. 2000.
[103]  J. Ramírez, A. García, L. Parrilla, P. G. Fernández, A. Lloris. "A Novel RNS-based SIMD RSC Processor for Digital Signal Processing", Conference Record of the 33rd Asilomar Conference on Signals, Systems and Computers, (Pacific Grove, EE.UU.) vol. 2, pp. 1307-1311, Oct. 1999.
[104]  P. G. Fernández, A. García, J. Ramírez, L. Parrilla, A. Lloris, "A New Implementation of the Discrete Cosine Transform in the Residue Number System", Conference Record of the 33rd Annual Asilomar Conference on Signals, Systems and Computers, (Pacific Grove, EE.UU.), vol. 2, pp. 1302-1306, Oct. 1999.
[105]  L. Parrilla, A. García, A. Martínez, J. Ramírez, A. Lloris, "High Performance RNS Pipelined PID Controller Using Field Programmable Devices", Proc. of the XIV Design of Circuits and Integrated Circuits Conference, (Palma de Mallorca, SPAIN), pp. 367-371, Nov. 1999.

Publications: Books/Book Chapters

[1]  J. Ramírez, J. M. Górriz, Recent Advances in Robust Speech Recognition Technology, Bentham Science Publishers, 2011. eISBN: 978-1-60805-172-4
[2]  J. M. Górriz, E. Lang, J. Ramírez, Recent Advances in Biomedical Signal Processing, Bentham Science Publishers, 2011. eISBN: 978-1-60805-218-9
[3]  R. Chaves, D. Salas-Gonzalez, J. Ramírez, J. M. Górriz, M. López, I. Álvarez, F. Segovia, "Preprocessing of Functional Brain Imaging for Computer Aided Diagnosis Systems", Recent Advances in Biomedical Signal Processing, Bentham Science Publishers, 2010.
[4]  Álvarez-Illán, Miriam M. López, J.M. Górriz, J. Ramírez, F. Segovia, D. Salas-Gonzalez, R. Chaves, C. G. Puntonet, "Functional Image Classification Techniques for Early Alzheimer’s Disease Detection", Recent Advances in Biomedical Signal Processing, Bentham Science Publishers, 2010.
[5]  J. M. Górriz, J. Ramírez, "Improved Long term Voice Activity Detection for Robust Speech Recognition", Recent Advances in Robust Speech Recognition Technology, pp. 46-59, Bentham Science Publishers, 2010.
[6]  J. Ramírez, J. M. Górriz, "Voice activity detection using contextual information for robust speech recognition", Recent Advances in Robust Speech Recognition Technology, pp. 30-45, Bentham Science Publishers, 2010.
[7]  J. Ramírez, J. M. Górriz, J. C. Segura, "Voice Activity Detection. Fundamentals and Speech Recognition System Robustness". Robust Speech Recognition and Understanding. pp. 1-22, Ed.: M. Grimm and K. Kroschel, I-TECH Education and Publishing, 2007. ISBN: 978-3-902613-08-0
[8]  J. M. Górriz, J. Ramírez, C. G. Puntonet, "New Advances in Voice Activity Detection using HOS and Optimization Strategies". Robust Speech Recognition and Understanding. pp. 49-66, Ed.: M. Grimm and K. Kroschel, I-TECH Education and Publishing, 2007. ISBN: 978-3-902613-08-0
[9]  A. de la Torre, J. C. Segura, C. Benítez, J. Ramírez, L. García and A. J. Rubio, "Speech Recognition Under Noise Conditions: Compensation Methods". Robust Speech Recognition and Understanding. pp. 437-460, Ed.: M. Grimm and K. Kroschel, I-TECH Education and Publishing, 2007. ISBN: 978-3-902613-08-0
[10]  D. González, A. García, G. A. Jullien, J. Ramírez, L. Parrilla and A. Lloris, "Clock Distribution in RNS-based VLSI Systems, " in Advances in Systems Engineering: Signal Processing and Communications (N. Mastorakis, Ed.), pp. 323-328. Electrical and Computer Engineering Series, World Scientific and Engineering Society Press, 2002 ISBN 960-8052-69-6.
[11]  J. Ramírez, A. García, P. G. Fernández, L. Parrilla, A. Lloris, A DCT Arquitecture Based on Complex Residue Number Systems, Advances in Signal Processing, Robotics and Communications, Electrical and Computer Engineering Series, World Scientific and Engineering Society Press, pp. 9-14, 2001. ISBN: 960-8052-42-4.
[12]  P. G. Fernández, J. Ramírez, A. García, L. Parrilla, A. Lloris, RNS Implementation of Two Dimensional Discrete Cosine Transform over FPL Devices, Advances in Systems Science: Measurement, Circuits and Control, Electrical and Computer Engineering Series, World Scientific and Engineering Society Press, pp. 29-34, 2001. ISBN: 960-8052-39-4.
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