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University of Sao Paulo
(15 results)-
White Papers
Analysis of Security and Performance Aspects in Service-Oriented Architectures
January 1, 2011, 12:00am PST
This paper presents a study on the use of security standards in the context of service oriented architectures with the goal of testing which are more costly in terms of performance in building...
Provided by University of Sao Paulo
-
White Papers
Input Parameters Optimization in Swarm DS-CDMA Multiuser Detectors
December 21, 2010, 12:00am PST
In this paper, the uplink Direct Sequence Code Division Multiple Access (DS-CDMA) MultiUser Detection problem (MUD) is studied into heuristic perspective, named Particle Swarm Optimization (PSO)....
Provided by University of Sao Paulo
-
White Papers
Spider Cursor: A Simple Versatile Interaction Tool for Data Visualization and Exploration
January 1, 2011, 12:00am PST
The authors present Spider Cursor, an exploration tool for geometric models that has proven useful in analyzing data coming from various sources. The Spider Cursor is simple to learn and use, and...
Provided by University of Sao Paulo
-
White Papers
Using Self Organizing Maps and Nearest-Neighbor to Data Clustering
May 16, 2008, 12:00am PDT
The data analysis involves the performance of different tasks, which can be performed by many different techniques and strategies. This paper emphasizes the performance of the Data Clustering task...
Provided by University of Sao Paulo
-
White Papers
Network Headers Optimization for Distributed Programming
November 8, 2010, 12:00am PST
This paper investigates the possibility of network cost reduction for distributed programming applications and presents a proposal for networks, with level 2 connectivity of the TCP/IP...
Provided by University of Sao Paulo
-
White Papers
Threat Modeling an Identity Management System for Mobile Internet
September 14, 2010, 12:00am PDT
The advent of Mobile Internet and Web 2.0 raised the need for identity-oriented and user-centric services. In recent years, many Identity Management Systems (IdMS) have been developed to allow...
Provided by University of Sao Paulo
-
Whitepapers
Asymptotic Performance Analysis of Precoded BICM-MIMO Under Channel Estimation Errors
May 24, 2012, 12:00am PDT
In this paper, the asymptotic performance of a precoded Bit-Interleaved Coded Modulation with Multiple-Input Multiple-Output (BICM-MIMO) system in a block-fading environment is first evaluated....
Provided by University of Sao Paulo
-
Whitepapers
Initial in - Mine Position Estimation Using RFID Tags
August 22, 2008, 12:00am PDT
Determining the real - time position of an underground mining vehicle relative to a global map is a very important problem facing the mining industry. Unfortunately, techniques such as Global...
Provided by University of Sao Paulo
-
Whitepapers
Performance of Orthogonal Wireless Relay Networks with Multiple SNR-Thresholds and Multiple Hard-Decision Detections
October 27, 2009, 12:00am PDT
In this paper, the authors investigate the diversity performance of wireless relay networks with multiple parallel relays communicating with the destination over orthogonal channels. The networks...
Provided by University of Sao Paulo
-
White Papers
Mobility in IP Networks: From Link Layer to Application Layer Protocols and Architectures
September 9, 2009, 12:00am PDT
With the popularization of the Internet and mobile devices, like notebooks and PDAs (Personal Digital Assistants), the concept of portability started to become popular, in the sense that the user...
Provided by University of Sao Paulo
-
White Papers
RDBMS as an Efficient Tool to Mine Cliques on Complex Networks
October 1, 2010, 12:00am PDT
Complex networks are intrinsically present in a wide range of applications. Real world networks have several unique properties, such as, sparsity, node degree distribution, which follow a power...
Provided by University of Sao Paulo
-
White Papers
FMI-SiR: A Flexible and Efficient Module for Similarity Searching on Oracle Database
June 1, 2010, 12:00am PDT
The volume of complex data (images, videos, audio, time series, DNA sequences, and others) has been growing at a very fast pace. Although they are not naturally handled by DataBase Management...
Provided by University of Sao Paulo
-
White Papers
DBM-Tree: A Dynamic Metric Access Method Sensitive to Local Density Data
February 1, 2010, 12:00am PST
Metric Access Methods (MAM) are widely employed to speed up the evaluation of similarity queries, such as range and k-nearest neighbor queries. Most of the currently MAM available today achieve...
Provided by University of Sao Paulo
-
White Papers
Digital Signature for Mobile Devices: A New Implementation and Evaluation
June 1, 2011, 12:00am PDT
This paper presents a new implementation and evaluation of digital signature for mobile devices. This digital signature system takes into account the device limitations and thus generates a...
Provided by University of Sao Paulo
-
Whitepapers
Task Effort Fuzzy Estimator for Software Development
March 26, 2008, 12:00am PDT
Software estimation has been one of the biggest challenges in Computer Science for the last decades. This practice is essential for research and development companies, since it can provide cost...
Provided by University of Sao Paulo
-
Whitepapers
Performance of Orthogonal Wireless Relay Networks with Multiple SNR-Thresholds and Multiple Hard-Decision Detections
October 27, 2009, 12:00am PDT
In this paper, the authors investigate the diversity performance of wireless relay networks with multiple parallel relays communicating with the destination over orthogonal channels. The networks...
Provided by University of Sao Paulo
-
Whitepapers
Initial in - Mine Position Estimation Using RFID Tags
August 22, 2008, 12:00am PDT
Determining the real - time position of an underground mining vehicle relative to a global map is a very important problem facing the mining industry. Unfortunately, techniques such as Global...
Provided by University of Sao Paulo
-
Whitepapers
Asymptotic Performance Analysis of Precoded BICM-MIMO Under Channel Estimation Errors
May 24, 2012, 12:00am PDT
In this paper, the asymptotic performance of a precoded Bit-Interleaved Coded Modulation with Multiple-Input Multiple-Output (BICM-MIMO) system in a block-fading environment is first evaluated....
Provided by University of Sao Paulo
-
Whitepapers
Task Effort Fuzzy Estimator for Software Development
March 26, 2008, 12:00am PDT
Software estimation has been one of the biggest challenges in Computer Science for the last decades. This practice is essential for research and development companies, since it can provide cost...
Provided by University of Sao Paulo
-
White Papers
Digital Signature for Mobile Devices: A New Implementation and Evaluation
June 1, 2011, 12:00am PDT
This paper presents a new implementation and evaluation of digital signature for mobile devices. This digital signature system takes into account the device limitations and thus generates a...
Provided by University of Sao Paulo
-
White Papers
DBM-Tree: A Dynamic Metric Access Method Sensitive to Local Density Data
February 1, 2010, 12:00am PST
Metric Access Methods (MAM) are widely employed to speed up the evaluation of similarity queries, such as range and k-nearest neighbor queries. Most of the currently MAM available today achieve...
Provided by University of Sao Paulo
-
White Papers
FMI-SiR: A Flexible and Efficient Module for Similarity Searching on Oracle Database
June 1, 2010, 12:00am PDT
The volume of complex data (images, videos, audio, time series, DNA sequences, and others) has been growing at a very fast pace. Although they are not naturally handled by DataBase Management...
Provided by University of Sao Paulo
-
White Papers
RDBMS as an Efficient Tool to Mine Cliques on Complex Networks
October 1, 2010, 12:00am PDT
Complex networks are intrinsically present in a wide range of applications. Real world networks have several unique properties, such as, sparsity, node degree distribution, which follow a power...
Provided by University of Sao Paulo
-
White Papers
Mobility in IP Networks: From Link Layer to Application Layer Protocols and Architectures
September 9, 2009, 12:00am PDT
With the popularization of the Internet and mobile devices, like notebooks and PDAs (Personal Digital Assistants), the concept of portability started to become popular, in the sense that the user...
Provided by University of Sao Paulo
-
White Papers
Threat Modeling an Identity Management System for Mobile Internet
September 14, 2010, 12:00am PDT
The advent of Mobile Internet and Web 2.0 raised the need for identity-oriented and user-centric services. In recent years, many Identity Management Systems (IdMS) have been developed to allow...
Provided by University of Sao Paulo
-
White Papers
Network Headers Optimization for Distributed Programming
November 8, 2010, 12:00am PST
This paper investigates the possibility of network cost reduction for distributed programming applications and presents a proposal for networks, with level 2 connectivity of the TCP/IP...
Provided by University of Sao Paulo
-
White Papers
Using Self Organizing Maps and Nearest-Neighbor to Data Clustering
May 16, 2008, 12:00am PDT
The data analysis involves the performance of different tasks, which can be performed by many different techniques and strategies. This paper emphasizes the performance of the Data Clustering task...
Provided by University of Sao Paulo
-
White Papers
Spider Cursor: A Simple Versatile Interaction Tool for Data Visualization and Exploration
January 1, 2011, 12:00am PST
The authors present Spider Cursor, an exploration tool for geometric models that has proven useful in analyzing data coming from various sources. The Spider Cursor is simple to learn and use, and...
Provided by University of Sao Paulo
-
White Papers
Input Parameters Optimization in Swarm DS-CDMA Multiuser Detectors
December 21, 2010, 12:00am PST
In this paper, the uplink Direct Sequence Code Division Multiple Access (DS-CDMA) MultiUser Detection problem (MUD) is studied into heuristic perspective, named Particle Swarm Optimization (PSO)....
Provided by University of Sao Paulo
-
White Papers
Analysis of Security and Performance Aspects in Service-Oriented Architectures
January 1, 2011, 12:00am PST
This paper presents a study on the use of security standards in the context of service oriented architectures with the goal of testing which are more costly in terms of performance in building...
Provided by University of Sao Paulo
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