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Universidad Autonoma de Madrid
(28 results)-
White Papers
Millimeter-And Submillimeter-Wave Imaging Technologies for Biometric Purposes
May 6, 2009, 12:00am PDT
The inherent restrictions of human body images acquired at visible spectrum hinder the performance of person recognition systems built using that kind of information (e.g. scene artifacts under...
Provided by Universidad Autonoma de Madrid
-
White Papers
Synthetic Generation of Handwritten Signatures Based on Spectral Analysis
January 30, 2009, 12:00am PST
A new method to generate synthetic online signatures is presented. The algorithm uses a parametrical model to generate the synthetic Discrete Fourier Transform (DFT) of the trajectory signals,...
Provided by Universidad Autonoma de Madrid
-
White Papers
Improving the Enrollment in Dynamic Signature Verification With Synthetic Samples
January 29, 2009, 12:00am PST
A novel scheme to generate multiple synthetic samples from a real on-line handwritten signature is proposed. The algorithm models a transmission channel which introduces a certain distortion into...
Provided by Universidad Autonoma de Madrid
-
White Papers
Social Networks And Trade Of Services: Modeling Interregional Tourism Flows
January 23, 2011, 12:00am PST
Recent literature on border effects has fostered research on informal barriers to trade and the role played by network dependencies. In relation to social networks, it has been shown that...
Provided by Universidad Autonoma de Madrid
-
White Papers
Trade Openness, Institutional Change And Economic Growth
June 4, 2009, 12:00am PDT
This paper explores the relationship between trade openness and economic growth through a change in institutions. To do so, the paper creates a theory of endogenous institutional change where...
Provided by Universidad Autonoma de Madrid
-
White Papers
The Evolution Of The Labor Market and Leisure Industries In Spain: Quality Of Life Versus Standard Of Living
June 13, 2008, 12:00am PDT
The authors discuss the effects that the emergence of the new post-industrial form of flexible capitalist organization has on the Spanish labor market and, by extension, on the working life of two...
Provided by Universidad Autonoma de Madrid
-
White Papers
International Transmission Of Shocks Under Financial Frictions: Some Implications For International Business Cycle Comovement
February 1, 2008, 12:00am PST
This paper analyzes the international transmission of shocks in economies with financial frictions. In a two-country flexible price monetary model with distribution costs in the imported good the...
Provided by Universidad Autonoma de Madrid
-
White Papers
Patents Of Introduction And The Spanish Innovation System
December 12, 2009, 12:00am PST
It is very apparent that the processes of technological change occurring throughout the last two centuries are intimately related to the sustained production and population growth among numerous...
Provided by Universidad Autonoma de Madrid
-
White Papers
A Semantically Distributed Approach to Map IP Traffic Measurements to a Standardized Ontology
January 1, 2010, 12:00am PST
Traffic monitoring in IP networks is a key issue for operators to guarantee Service Level Agreement both to their clients and with regards to other connectivity providers. Thus, having efficient...
Provided by Universidad Autonoma de Madrid
-
White Papers
Comparison in Power Consumption of Static and Dynamic WDM Networks
March 8, 2011, 12:00am PST
Greening of the Internet has become one of the main challenges for the research community. Optical networks can provide an energy efficient solution, but it has become crucial to assess its power...
Provided by Universidad Autonoma de Madrid
-
White Papers
Analysis of the Processing and Sojourn Times of Burst Control Packets in Optical Burst Switches
January 11, 2008, 12:00am PST
In optical burst switched networks, when a burst control packet arrives at a core node, its scheduling algorithm looks up its internal reservation table for an available gap at which to...
Provided by Universidad Autonoma de Madrid
-
White Papers
On the Early Release of Burst-Control Packets in Optical Burst-Switched Networks
January 1, 2011, 12:00am PST
In optical burst-switched networks, the so-called burst-control packet is sent a given offset-time ahead of the optical data burst to advertise the imminent burst arrival, and reserve a time-slot...
Provided by Universidad Autonoma de Madrid
-
White Papers
On the Vulnerability of Face Verification Systems to Hill-Climbing Attacks
April 15, 2009, 12:00am PDT
In this paper, the authors use a general hill-climbing attack algorithm based on Bayesian adaption to test the vulnerability of two face recognition systems to indirect attacks. The attacking...
Provided by Universidad Autonoma de Madrid
-
White Papers
HMM-Based On-Line Signature Verification: Feature Extraction and Signature Modeling
December 1, 2007, 12:00am PST
A function-based approach to on-line signature verification is presented. The system uses a set of time sequences and Hidden Markov Models (HMMs). Development and evaluation experiments are...
Provided by Universidad Autonoma de Madrid
-
White Papers
Iris Liveness Detection Based on Quality Related Features
December 9, 2011, 12:00am PST
A new liveness detection scheme for iris based on quality related measures is presented. The novel anti-spoofing technique is tested on a database comprising over 1,600 real and fake (high quality...
Provided by Universidad Autonoma de Madrid
-
White Papers
Predicting Iris Vulnerability to Direct Attacks Based on Quality Related Features
July 5, 2011, 12:00am PDT
A new vulnerability prediction scheme for direct attacks to iris recognition systems is presented. The objective of the novel technique, based on a 22 quality related parameterization, is to...
Provided by Universidad Autonoma de Madrid
-
White Papers
Towards a Better Understanding of the Performance of Latent Fingerprint Recognition in Realistic Forensic Conditions
May 13, 2010, 12:00am PDT
This paper studies the performance of a state-of-the-art fingerprint recognition technology, in several practical scenarios of interest in forensic casework. First, the differences in performance...
Provided by Universidad Autonoma de Madrid
-
White Papers
Scenario-Based Score Fusion for Face Recognition at a Distance
April 19, 2010, 12:00am PDT
The effect of different acquisition distances on the performance of face verification is studied. In particular, the authors evaluate two standard approaches using popular features (DCT and PCA)...
Provided by Universidad Autonoma de Madrid
-
White Papers
Fingerprint Liveness Detection Based on Quality Measures
June 15, 2009, 12:00am PDT
A new fingerprint parameterization for liveness detection based on quality measures is presented. The novel feature set is used in a complete liveness detection system and tested on the...
Provided by Universidad Autonoma de Madrid
-
White Papers
Biometrics Beyond the Visible Spectrum: Imaging Technologies and Applications
May 19, 2009, 12:00am PDT
Human body images acquired at visible spectrum have inherent restrictions that hinder the performance of person recognition systems built using that kind of information (e.g. scene artefacts under...
Provided by Universidad Autonoma de Madrid
-
White Papers
Information-Theoretical Comparison of Evidence Evaluation Methods for Score-Based Biometric Systems
February 15, 2008, 12:00am PST
Biometric systems are a powerful tool in many forensic disciplines in order to aid scientists to evaluate the weight of the evidence. However, uprising requirements of admissibility in forensic...
Provided by Universidad Autonoma de Madrid
-
White Papers
BioSec Multimodal Biometric Database in Text-Dependent Speaker Recognition
April 1, 2008, 12:00am PDT
In this paper, the authors briefly describe the BioSec multimodal biometric database and analyze its use in automatic text-dependent speaker recognition research. The paper is structured into four...
Provided by Universidad Autonoma de Madrid
-
White Papers
Dealing With Sensor Interoperability in Multi-Biometrics: The UPM Experience at the Biosecure Multimodal
January 16, 2008, 12:00am PST
Multimodal biometric systems allow to overcome some of the problems presented in unimodal systems, such as non-universality, lack of distinctiveness of the unimodal trait, noise in the acquired...
Provided by Universidad Autonoma de Madrid
-
White Papers
Signature Verification on Handheld Devices
September 25, 2009, 12:00am PDT
Signature verification for handheld devices (e.g. smartphones, PDAs, etc.) as an authentication method is studied. Signature can be used to authenticate users in mobile networks for secure...
Provided by Universidad Autonoma de Madrid
-
White Papers
Automatic Measures for Predicting Performance in Off-Line Signature
August 21, 2007, 12:00am PDT
Performance in terms of accuracy is one of the most important goals of a biometric system. Hence, having a measure which is able to predict the performance with respect to a particular sample of...
Provided by Universidad Autonoma de Madrid
-
White Papers
Hill-Climbing and Brute-Force Attacks on Biometric Systems: A Case Study in Match-on-Card Fingerprint Verification
October 11, 2007, 12:00am PDT
In this paper, the authors study the robustness of state-of-the-art automatic fingerprint verification systems against hill-climbing and brute-force attacks. They compare the performance of this...
Provided by Universidad Autonoma de Madrid
-
White Papers
Formal Security Analysis of Registration Protocols for Interactive Systems: A Methodology and a Case of Study
January 5, 2012, 12:00am PST
In this paper, the authors present and formally analyze CHAT-SRP (CHAos based Tickets-Secure Registration Protocol), a protocol to provide interactive and collaborative platforms with a...
Provided by Universidad Autonoma de Madrid
-
White Papers
Evolutionary Discriminative Confidence Estimation for Spoken Term Detection
November 15, 2011, 12:00am PST
Spoken Term Detection (STD) is the task of searching for occurrences of spoken terms in audio archives. It relies on robust confidence estimation to make a hit/False Alarm (FA) decision. In order...
Provided by Universidad Autonoma de Madrid
-
White Papers
Evolutionary Discriminative Confidence Estimation for Spoken Term Detection
November 15, 2011, 12:00am PST
Spoken Term Detection (STD) is the task of searching for occurrences of spoken terms in audio archives. It relies on robust confidence estimation to make a hit/False Alarm (FA) decision. In order...
Provided by Universidad Autonoma de Madrid
-
White Papers
Formal Security Analysis of Registration Protocols for Interactive Systems: A Methodology and a Case of Study
January 5, 2012, 12:00am PST
In this paper, the authors present and formally analyze CHAT-SRP (CHAos based Tickets-Secure Registration Protocol), a protocol to provide interactive and collaborative platforms with a...
Provided by Universidad Autonoma de Madrid
-
White Papers
Hill-Climbing and Brute-Force Attacks on Biometric Systems: A Case Study in Match-on-Card Fingerprint Verification
October 11, 2007, 12:00am PDT
In this paper, the authors study the robustness of state-of-the-art automatic fingerprint verification systems against hill-climbing and brute-force attacks. They compare the performance of this...
Provided by Universidad Autonoma de Madrid
-
White Papers
Automatic Measures for Predicting Performance in Off-Line Signature
August 21, 2007, 12:00am PDT
Performance in terms of accuracy is one of the most important goals of a biometric system. Hence, having a measure which is able to predict the performance with respect to a particular sample of...
Provided by Universidad Autonoma de Madrid
-
White Papers
Signature Verification on Handheld Devices
September 25, 2009, 12:00am PDT
Signature verification for handheld devices (e.g. smartphones, PDAs, etc.) as an authentication method is studied. Signature can be used to authenticate users in mobile networks for secure...
Provided by Universidad Autonoma de Madrid
-
White Papers
Dealing With Sensor Interoperability in Multi-Biometrics: The UPM Experience at the Biosecure Multimodal
January 16, 2008, 12:00am PST
Multimodal biometric systems allow to overcome some of the problems presented in unimodal systems, such as non-universality, lack of distinctiveness of the unimodal trait, noise in the acquired...
Provided by Universidad Autonoma de Madrid
-
White Papers
BioSec Multimodal Biometric Database in Text-Dependent Speaker Recognition
April 1, 2008, 12:00am PDT
In this paper, the authors briefly describe the BioSec multimodal biometric database and analyze its use in automatic text-dependent speaker recognition research. The paper is structured into four...
Provided by Universidad Autonoma de Madrid
-
White Papers
Information-Theoretical Comparison of Evidence Evaluation Methods for Score-Based Biometric Systems
February 15, 2008, 12:00am PST
Biometric systems are a powerful tool in many forensic disciplines in order to aid scientists to evaluate the weight of the evidence. However, uprising requirements of admissibility in forensic...
Provided by Universidad Autonoma de Madrid
-
White Papers
Biometrics Beyond the Visible Spectrum: Imaging Technologies and Applications
May 19, 2009, 12:00am PDT
Human body images acquired at visible spectrum have inherent restrictions that hinder the performance of person recognition systems built using that kind of information (e.g. scene artefacts under...
Provided by Universidad Autonoma de Madrid
-
White Papers
Fingerprint Liveness Detection Based on Quality Measures
June 15, 2009, 12:00am PDT
A new fingerprint parameterization for liveness detection based on quality measures is presented. The novel feature set is used in a complete liveness detection system and tested on the...
Provided by Universidad Autonoma de Madrid
-
White Papers
Scenario-Based Score Fusion for Face Recognition at a Distance
April 19, 2010, 12:00am PDT
The effect of different acquisition distances on the performance of face verification is studied. In particular, the authors evaluate two standard approaches using popular features (DCT and PCA)...
Provided by Universidad Autonoma de Madrid
-
White Papers
Towards a Better Understanding of the Performance of Latent Fingerprint Recognition in Realistic Forensic Conditions
May 13, 2010, 12:00am PDT
This paper studies the performance of a state-of-the-art fingerprint recognition technology, in several practical scenarios of interest in forensic casework. First, the differences in performance...
Provided by Universidad Autonoma de Madrid
-
White Papers
Predicting Iris Vulnerability to Direct Attacks Based on Quality Related Features
July 5, 2011, 12:00am PDT
A new vulnerability prediction scheme for direct attacks to iris recognition systems is presented. The objective of the novel technique, based on a 22 quality related parameterization, is to...
Provided by Universidad Autonoma de Madrid
-
White Papers
Iris Liveness Detection Based on Quality Related Features
December 9, 2011, 12:00am PST
A new liveness detection scheme for iris based on quality related measures is presented. The novel anti-spoofing technique is tested on a database comprising over 1,600 real and fake (high quality...
Provided by Universidad Autonoma de Madrid
-
White Papers
HMM-Based On-Line Signature Verification: Feature Extraction and Signature Modeling
December 1, 2007, 12:00am PST
A function-based approach to on-line signature verification is presented. The system uses a set of time sequences and Hidden Markov Models (HMMs). Development and evaluation experiments are...
Provided by Universidad Autonoma de Madrid
-
White Papers
On the Vulnerability of Face Verification Systems to Hill-Climbing Attacks
April 15, 2009, 12:00am PDT
In this paper, the authors use a general hill-climbing attack algorithm based on Bayesian adaption to test the vulnerability of two face recognition systems to indirect attacks. The attacking...
Provided by Universidad Autonoma de Madrid
-
White Papers
On the Early Release of Burst-Control Packets in Optical Burst-Switched Networks
January 1, 2011, 12:00am PST
In optical burst-switched networks, the so-called burst-control packet is sent a given offset-time ahead of the optical data burst to advertise the imminent burst arrival, and reserve a time-slot...
Provided by Universidad Autonoma de Madrid
-
White Papers
Analysis of the Processing and Sojourn Times of Burst Control Packets in Optical Burst Switches
January 11, 2008, 12:00am PST
In optical burst switched networks, when a burst control packet arrives at a core node, its scheduling algorithm looks up its internal reservation table for an available gap at which to...
Provided by Universidad Autonoma de Madrid
-
White Papers
Comparison in Power Consumption of Static and Dynamic WDM Networks
March 8, 2011, 12:00am PST
Greening of the Internet has become one of the main challenges for the research community. Optical networks can provide an energy efficient solution, but it has become crucial to assess its power...
Provided by Universidad Autonoma de Madrid
-
White Papers
A Semantically Distributed Approach to Map IP Traffic Measurements to a Standardized Ontology
January 1, 2010, 12:00am PST
Traffic monitoring in IP networks is a key issue for operators to guarantee Service Level Agreement both to their clients and with regards to other connectivity providers. Thus, having efficient...
Provided by Universidad Autonoma de Madrid
-
White Papers
Patents Of Introduction And The Spanish Innovation System
December 12, 2009, 12:00am PST
It is very apparent that the processes of technological change occurring throughout the last two centuries are intimately related to the sustained production and population growth among numerous...
Provided by Universidad Autonoma de Madrid
-
White Papers
International Transmission Of Shocks Under Financial Frictions: Some Implications For International Business Cycle Comovement
February 1, 2008, 12:00am PST
This paper analyzes the international transmission of shocks in economies with financial frictions. In a two-country flexible price monetary model with distribution costs in the imported good the...
Provided by Universidad Autonoma de Madrid
-
White Papers
The Evolution Of The Labor Market and Leisure Industries In Spain: Quality Of Life Versus Standard Of Living
June 13, 2008, 12:00am PDT
The authors discuss the effects that the emergence of the new post-industrial form of flexible capitalist organization has on the Spanish labor market and, by extension, on the working life of two...
Provided by Universidad Autonoma de Madrid
-
White Papers
Trade Openness, Institutional Change And Economic Growth
June 4, 2009, 12:00am PDT
This paper explores the relationship between trade openness and economic growth through a change in institutions. To do so, the paper creates a theory of endogenous institutional change where...
Provided by Universidad Autonoma de Madrid
-
White Papers
Social Networks And Trade Of Services: Modeling Interregional Tourism Flows
January 23, 2011, 12:00am PST
Recent literature on border effects has fostered research on informal barriers to trade and the role played by network dependencies. In relation to social networks, it has been shown that...
Provided by Universidad Autonoma de Madrid
-
White Papers
Improving the Enrollment in Dynamic Signature Verification With Synthetic Samples
January 29, 2009, 12:00am PST
A novel scheme to generate multiple synthetic samples from a real on-line handwritten signature is proposed. The algorithm models a transmission channel which introduces a certain distortion into...
Provided by Universidad Autonoma de Madrid
-
White Papers
Synthetic Generation of Handwritten Signatures Based on Spectral Analysis
January 30, 2009, 12:00am PST
A new method to generate synthetic online signatures is presented. The algorithm uses a parametrical model to generate the synthetic Discrete Fourier Transform (DFT) of the trajectory signals,...
Provided by Universidad Autonoma de Madrid
-
White Papers
Millimeter-And Submillimeter-Wave Imaging Technologies for Biometric Purposes
May 6, 2009, 12:00am PDT
The inherent restrictions of human body images acquired at visible spectrum hinder the performance of person recognition systems built using that kind of information (e.g. scene artifacts under...
Provided by Universidad Autonoma de Madrid
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