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Displaying 1-50 out of 2,005 total
Direct trimming of NURBS surfaces on the GPU
Found in: ACM Transactions on Graphics (TOG)
By Andre Schollmeyer, Bernd Frohlich, Andre Schollmeyer, Bernd Frohlich, Andre Schollmeyer, Bernd Frohlich, Andre Schollmeyer, Bernd Frohlich
Issue Date:July 2009
pp. 1-2
This paper presents a highly efficient direct trimming technique for NURBS surfaces, which is applicable to tessellation-based rendering as well as ray tracing systems. The central idea is to split the trim curves into monotonic segments with respect to th...
Improving software engineering education through an empirical approach: lessons learned from capstone teaching experiences
Found in: Proceedings of the 45th ACM technical symposium on Computer science education (SIGCSE '14)
By Andres F. Chacon, Andres Neyem, Jose I. Benedetto
Issue Date:March 2014
pp. 391-396
Software Engineering is an important area within industry and academia. Empirical software engineering has grown in importance in the software engineering research and education community. This means that it has become very relevant to include empirical st...
Utilization of Hyper Environments for Tracking and Monitoring of Processes and Supplies in Construction and Assembly Industries
Found in: 2013 Symposium on Computer and Automation for Offshore Shipbuilding (NAVCOMP)
By Marcos Andre Do Amaral Bichet,Eduardo Kenji Hasegawa de Freitas,Ricardo Sole Rocha,Andre Nunez,Greyce Nogueira Schroeder,Rafael Augusto Penna dos Santos,Silvia Silva Da Costa Botelho
Issue Date:March 2013
pp. 81-86
This article addresses the utilization of hyper environments and RFID to track and trace processes and supplies in construction and assembly industries, using networks of sensors/actuators and virtual reality. The concept and tools for development and impl...
Polynomial Models Identification Using Real Data Acquisition Applied to Didactic System
Found in: 2013 Symposium on Computer and Automation for Offshore Shipbuilding (NAVCOMP)
By Andre F. O. A. Dantas,Amanda D. O. S. Dantas,Andre L. Maitelli,Eridenes F. de Queiroz,Hortoni G. C. V. Freire,Oscar G. Filho
Issue Date:March 2013
pp. 1-6
Models of real systems are of fundamental importance for its analysis, making it possible to simulate or predict its behavior. Additionally, advanced techniques for controller design, optimization, monitoring, fault detection and diagnosis components are a...
P∗: A model of pilot-abstractions
Found in: 2012 IEEE 8th International Conference on E-Science (e-Science)
By Andre Luckow,Mark Santcroos,Andre Merzky,Ole Weidner,Pradeep Mantha,Shantenu Jha
Issue Date:October 2012
pp. 1-10
Pilot-Jobs support effective distributed resource utilization, and are arguably one of the most widely-used distributed computing abstractions — as measured by the number and types of applications that use them, as well as the number of production distribu...
Meta-Learning for Periodic Algorithm Selection in Time-Changing Data
Found in: 2012 Brazilian Symposium on Neural Networks (SBRN)
By Andre Luis Debiaso Rossi,Andre C.P.L.F. Carvalho,Carlos Soares
Issue Date:October 2012
pp. 7-12
When users have to choose a learning algorithm to induce a model for a given dataset, a common practice is to select an algorithm whose bias suits the data distribution. In real-world applications that produce data continuously this distribution may change...
C1x6: a stereoscopic six-user display for co-located collaboration in shared virtual environments
Found in: ACM Transactions on Graphics (TOG)
By Alexander Kulik, Andre Kunert, Armin Zink, Bernd Froehlich, Roland Blach, Roman Reichel, Stephan Beck, Alexander Kulik, Andre Kunert, Armin Zink, Bernd Froehlich, Roland Blach, Roman Reichel, Stephan Beck
Issue Date:December 2011
pp. 1-15
Stereoscopic multi-user systems provide multiple users with individual views of a virtual environment. We developed a new projection-based stereoscopic display for six users, which employs six customized DLP projectors for fast time-sequential image displa...
SharpLudus revisited: from ad hoc and monolithic digital game DSLs to effectively customized DSM approaches
Found in: Proceedings of the compilation of the co-located workshops on DSM'11, TMC'11, AGERE!'11, AOOPES'11, NEAT'11, & VMIL'11 (SPLASH '11 Workshops)
By Andre L.M. Santos, Andre W.B. Furtado, Geber L. Ramalho
Issue Date:October 2011
pp. 57-62
This paper describes our experience in improving an ad hoc approach for creating domain-specific languages targeted at digital games, replacing it by a customization of more structured approaches in the domain-specific modeling literature. We give special ...
Improving Digital Game Development with Software Product Lines
Found in: IEEE Software
By Andre W.B. Furtado,Andre L.M. Santos,Geber L. Ramalho,Eduardo Santana de Almeida
Issue Date:September 2011
pp. 30-37
Introducing reuse and software product line (SPL) concepts into digital game-development processes isn't a straightforward task. This work presents a systematic process for bridging SPLs to game development, culminating with domain-specific languages and g...
Graph Grammars: A Comparison between Verification Methods
Found in: Theoretical Computer Science, Workshop-School on
By André Moura de Mello,Luiz Carlos Lemos Junior,Luciana Foss,Simone André da Costa Cavalheiro
Issue Date:August 2011
pp. 88-94
Graph grammars are a formal specification language well-suited to applications in which states have a complex topology (involving not only many types of elements, but also different types of relations between them) and in which behaviour is essentially dat...
A cooperative coevolutionary algorithm for the design of wireless sensor networks: track name: bio-inspired solutions for wireless sensor networks
Found in: Proceedings of the 13th annual conference companion on Genetic and evolutionary computation (GECCO '11)
By Andre Luiz Lins Aquino, Andre Siqueira Ruela, Frederico Gadelha Guimaraes
Issue Date:July 2011
pp. 607-614
This work proposes a cooperative coevolutionary algorithm for the design of a wireless sensor network considering complex network metrics. It is proposed an heuristic based on cooperative coevolution to find a network configuration such that its communicat...
Wireless image transmission in electric power hostile environment
Found in: Local Computer Networks, Annual IEEE Conference on
By Andre, R. Hirakawa Andre, Martucci, Moacyr Martucci, Thomas, C. G. Vilhena Thomas, Silvio, M. Amancio Silvio, Jose, C. V. Lemos Jose
Issue Date:October 2010
pp. 760-763
This paper presents the study carried out at Universidade de São Paulo and CTEEP to apply wireless communication standards for video, voice and data transmission in Power Line high voltage environment, and provide a communication tool to help the activitie...
Combining Meta-learning and Search Techniques to SVM Parameter Selection
Found in: Neural Networks, Brazilian Symposium on
By Taciana A. F. Gomes, Ricardo B. C. Prudêncio, Carlos Soares, André L. D. Rossi, André Carvalho
Issue Date:October 2010
pp. 79-84
Support Vector Machines (SVMs) have achieved very good performance on different learning problems. However, the success of SVMs depends on the adequate choice of a number of parameters, including for instance the kernel and the regularization parameters. I...
A Generic Metamodel for IT Security
Found in: Availability, Reliability and Security, International Conference on
By André Miede, Nedislav Nedyalkov, Christian Gottron, André König, Nicolas Repp, Ralf Steinmetz
Issue Date:February 2010
pp. 430-437
Understanding and discussing the security aspects of IT systems during their development is challenging for both domain specialists and IT experts - neglecting this aspect leads to communication problems and, eventually, to less secure systems. An importan...
Zero quiescent current startup circuit with automatic turning-off for low power current and voltage reference
Found in: Proceedings of the 22nd Annual Symposium on Integrated Circuits and System Design: Chip on the Dunes (SBCCI '09)
By Alfredo Olmos, Andre Mansano, Andre Vilas Boas, Jefferson Soldera
Issue Date:August 2009
pp. 1-3
A zero quiescent current startup circuit with automatic turning-off for low power current and voltage reference is presented. The proposed startup uses positive feedback to sense an internal bias voltage of the main current/voltage reference circuit and gu...
Distributed Replica-Exchange Simulations on Production Environments Using SAGA and Migol
Found in: eScience, IEEE International Conference on
By André Luckow, Shantenu Jha, Joohyun Kim, Andre Merzky, Bettina Schnor
Issue Date:December 2008
pp. 253-260
There exists a class of scientific applications for which utilizing distributed resources is critical for reducing the time-to-solution. In this paper, we discuss a specific class of applications - Replica-Exchange simulations - where the orchestration of ...
Handset based automatic network re-selection system for GSM/GPRS and WiFi
Found in: Proceedings of the 6th ACM international symposium on Mobility management and wireless access (MobiWac '08)
By Alexander Garcia, Andres Felipe Millan, Andres Navarro Cadavid, Gabriel Tamura, Oscar Wilfrido Jimenez
Issue Date:October 2008
pp. 144-148
This paper presents the results of the development of a handset based automatic network reselection software system, which allows keeping end-to-end connections through semi-transparent handoff on WiFi/GSM-GPRS networks. A description of the developed syst...
Bio-inspired Optimization Techniques for SVM Parameter Tuning
Found in: Neural Networks, Brazilian Symposium on
By André Luis Debiaso Rossi, André C.P.L.F. de Carvalho
Issue Date:October 2008
pp. 57-62
Machine learning techniques have been successfully applied to a large number of classification problems. Among these techniques, Support Vector Machines (SVMs) are well know for the good classification accuracies reported in several studies. However, like ...
Bio-Inspired Parameter Tunning of MLP Networks for Gene Expression Analysis
Found in: Hybrid Intelligent Systems, International Conference on
By André L.D. Rossi, André C.P.L.F. Carvalho, Carlos Soares
Issue Date:September 2008
pp. 435-440
The performance of Artificial Neural Networks is largely influenced by the value of their parameters. Among these free parameters, one can mention those related with the network architecture, e.g., number of hidden neurons, number of hidden layers, activat...
Dynamic Routing on the Ubichip: Toward Synaptogenetic Neural Networks
Found in: Adaptive Hardware and Systems, NASA/ESA Conference on
By Andres Upegui, Yann Thoma, Andres Perez-Uribe, Eduardo Sanchez
Issue Date:June 2008
pp. 228-235
The ubichip is a bio-inspired reconfigurable circuit developed in the framework of the european project Perplexus. The ubichip offers special reconfigurability capabilities, being the dynamic routing one of them. This paper describes how to exploit the dyn...
PERPLEXUS: Pervasive Computing Framework for Modeling Complex Virtually-Unbounded Systems
Found in: Adaptive Hardware and Systems, NASA/ESA Conference on
By Eduardo Sanchez, Andres Perez-Uribe, Andres Upegui, Yann Thoma, Juan Manuel Moreno, Alessandro Villa, Henri Volken, Andrzej Napieralski, Gilles Sassatelli, Erwan Lavarec
Issue Date:August 2007
pp. 587-591
This paper introduces Perplexus, a European project that aims to develop a scalable hardware platform made of custom reconfigurable devices endowed with bio-inspired capabilities. This platform will enable the simulation of large-scale complex systems and ...
The Perplexus bio-inspired reconfigurable circuit
Found in: Adaptive Hardware and Systems, NASA/ESA Conference on
By Andres Upegui, Yann Thoma, Eduardo Sanchez, Andres Perez-Uribe, Juan Manuel Moreno, Jordi Madrenas
Issue Date:August 2007
pp. 600-605
This paper introduces the ubichip, a custom recon- figurable electronic device capable of implementing bio- inspired circuits featuring growth, learning, and evolution. The ubichip is developed in the framework of Perplexus, a European project that aims to...
Self-replication for reliability: bio-inspired hardware and the embryonics project
Found in: Proceedings of the 3rd conference on Computing frontiers (CF '06)
By Andre Stauffer, Daniel Mange, Gianluca Tempesti, Joel Rossier, Pierre-Andre Mudry
Issue Date:May 2006
pp. 199-206
The growth and operation of all living beings are directed by the interpretation, in each of their cells, of a chemical program, the DNA string or genome. This process is the source of inspiration for the Embryonics (embryonic electronics) project, whose f...
Static and Dynamic Configurable Systems
Found in: IEEE Transactions on Computers
By Eduardo Sanchez, Moshe Sipper, Jacques-Olivier Haenni, Jean-Luc Beuchat, André Stauffer, Andrés Perez-Uribe
Issue Date:June 1999
pp. 556-564
<p><b>Abstract</b>—Field-programmable gate arrays (FPGAs) are large, fast integrated circuits—that can be modified, or configured, almost at any point by the end user. Within the domain of configurable computing, we distinguish between tw...
Visorama: a complete virtual panorama system
Found in: ACM SIGGRAPH 98 Conference abstracts and applications (SIGGRAPH '98)
By Andre Matos, Andre Parente, Heloisa Siffert, Jonas Gomes, Luiz Velho
Issue Date:July 1998
pp. 252
This paper describes a physically-based rendering system tailored to the demands of lighting design and architecture. The simulation uses a light-backwards ray-tracing method with extensions to efficiently solve the rendering equation under most conditions...
Some Applications of FPGAs in Bio-Inspired Hardware
Found in: Field-Programmable Custom Computing Machines, Annual IEEE Symposium on
By Andre Stauffer, Moshe Sipper, Andres Perez-Uribe
Issue Date:April 1998
pp. 278
If one considers life on earth since its very beginning, three levels of organization can be distinguished: the phylogenetic level concerns the temporal evolution of the genetic programs within individuals and species, the ontogenetic level concerns the de...
Time domain passivity controller for 4-channel time-delay bilateral teleoperation
Found in: IEEE Transactions on Haptics
By Joao Rebelo,Andre Schiele
Issue Date:February 2015
pp. 1
This paper presents an extension of the time-domain passivity control approach to a 4-channel bilateral controller under the effects of time delays. Time-domain passivity control has been used successfully to stabilize teleoperation systems with position-f...
How Software Designers Interact with Sketches at the Whiteboard
Found in: IEEE Transactions on Software Engineering
By Nicolas Mangano,Thomas LaToza,Marian Petre,Andre Van der Hoek
Issue Date:February 2015
pp. 1
Whiteboard sketches play a crucial role in software development, helping to support groups of designers in reasoning about a software design problem at hand. However, little is known about these sketches and how they support design ‘in the moment’, particu...
Quantum Dynamics Simulation of Electrons in Materials on High-Performance Computers
Found in: Computing in Science & Engineering
By Andre Schleife,Erik W. Draeger,Victor M. Anisimov,Alfredo A. Correa,Yosuke Kanai
Issue Date:September 2014
pp. 54-60
Advancement in high-performance computing allows us to calculate properties of increasingly complex materials with unprecedented accuracy. At the same time, to take full advantage of modern leadership-class supercomputers, the calculations need to scale we...
Scaling Astroinformatics: Python + Automatic Parallelization
Found in: Computer
By Stefan C. Muller,Gustavo Alonso,Andre Csillaghy
Issue Date:September 2014
pp. 41-47
Pydron, a system that bridges the gap between interactive data analysis and scalable computing, enables astronomers to process large datasets with Python without the complexities of managing parallel processing code.
Direct Isosurface Ray Casting of NURBS-Based Isogeometric Analysis
Found in: IEEE Transactions on Visualization and Computer Graphics
By Andre Schollmeyer,Bernd Froehlich
Issue Date:September 2014
pp. 1-1
In NURBS-based isogeometric analysis, the basis functions of a 3D model’s geometric description also form the basis for the solution space of variational formulations of partial differential equations. In order to visualize the results of a NURBS-based iso...
EOLE: Paving the way for an effective implementation of value prediction
Found in: 2014 ACM/IEEE 41st International Symposium on Computer Architecture (ISCA)
By Arthur Perais,Andre Seznec
Issue Date:June 2014
pp. 481-492
Even in the multicore era, there is a continuous demand to increase the performance of single-threaded applications. However, the conventional path of increasing both issue width and instruction window size inevitably leads to the power wall. Value predict...
Towards energy proportionality for large-scale latency-critical workloads
Found in: 2014 ACM/IEEE 41st International Symposium on Computer Architecture (ISCA)
By David Lo,Liqun Cheng,Rama Govindaraju,Luiz Andre Barroso,Christos Kozyrakis
Issue Date:June 2014
pp. 301-312
Reducing the energy footprint of warehouse-scale computer (WSC) systems is key to their affordability, yet difficult to achieve in practice. The lack of energy proportionality of typical WSC hardware and the fact that important workloads (such as search) r...
A Branch-and-Bound Algorithm for Autonomic Adaptation of Multi-cloud Applications
Found in: 2014 14th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid)
By Andre Almeida,Francisco Dantas,Everton Cavalcante,Thais Batista
Issue Date:May 2014
pp. 315-323
Adaptation is an important concern in cloud-based applications composed of services provided by different cloud providers since cloud services can suffer from Quality of Services(QoS) fluctuations. Other conditions that can also trigger an adaptation proce...
Role-Based Self-Appointment for Autonomic Management of Resources
Found in: 2014 28th International Conference on Advanced Information Networking and Applications Workshops (WAINA)
By Patricia Endo,Andre Palhares,Marcelo Santos,Glauco Goncalves,Djamel Sadok,Judith Kelner,Azimeh Sefidcon,Fetahi Wuhib
Issue Date:May 2014
pp. 696-701
Resource management in distributed environments, such as Cloud virtualized networks, is one of the main concerns of infrastructure providers. Despite many advantages of centralized solutions (such as the facility of implementation and management), their un...
Joint Allocation of Nodes and Links with Load Balancing in Network Virtualization
Found in: 2014 IEEE 28th International Conference on Advanced Information Networking and Applications (AINA)
By Andre Palhares,Marcelo Santos,Patricia Endo,Jonatas Vitalino,Moises Rodrigues,Glauco Goncalves,Djamel Sadok,Azimeh Sefidcon,Fetahi Wuhib
Issue Date:May 2014
pp. 148-155
Network virtualization is seen as the fundamental underlying technology for enabling future Internet services. Mapping virtual networks onto a substrate network is a well-known NP-hard problem. Therefore, some authors propose heuristic based strategies by ...
Semi-custom NCL Design with Commercial EDA Frameworks: Is it Possible?
Found in: 2014 20th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC)
By Matheus Moreira,Augusto Neutzling,Mayler Martins,Andre Reis,Renato Ribas,Ney Calazans
Issue Date:May 2014
pp. 53-60
Quasi delay-insensitive design is a promising solution for coping with contemporary silicon technology problems such as aggressive process variations and tight power budgets. However, one major barrier to its wider adoption is the lack of automated optimiz...
Single shot high dynamic range imaging using piecewise linear estimators
Found in: 2014 IEEE International Conference on Computational Photography (ICCP)
By Cecilia Aguerrebere,Andres Almansa,Yann Gousseau,Julie Delon,Pablo Muse
Issue Date:May 2014
pp. 1-10
Building high dynamic range (HDR) images by combining photographs captured with different exposure times present several drawbacks, such as the need for global alignment and motion estimation in order to avoid ghosting artifacts. The concept of spatially v...
Increasing Dependability of Component-Based Software Systems by Online Failure Prediction (Short Paper)
Found in: 2014 Tenth European Dependable Computing Conference (EDCC)
By Teerat Pitakrat,Andre van Hoorn,Lars Grunske
Issue Date:May 2014
pp. 66-69
Online failure prediction for large-scale software systems is a challenging task. One reason is the complex structure of many-partially inter-dependent-hardware and software components. State-of-the-art approaches use separate prediction models for paramet...
Gaining Confidence on Dependability Benchmarks' Conclusions through "Back-to-Back" Testing (Practical Experience Report)
Found in: 2014 Tenth European Dependable Computing Conference (EDCC)
By Miquel Martinez,David De Andres,Juan-Carlos Ruiz
Issue Date:May 2014
pp. 130-137
The main goal of any benchmark is to guide decisions through system ranking, but surprisingly little research has been focused so far on providing means to gain confidence on the analysis carried out with benchmark results. The inclusion of a back-to-back ...
Towards a Dependability Control Center for Large Software Landscapes (Short Paper)
Found in: 2014 Tenth European Dependable Computing Conference (EDCC)
By Florian Fittkau,Andre Van Hoorn,Wilhelm Hasselbring
Issue Date:May 2014
pp. 58-61
Manual management of dependability while operating large software systems - including failure detection, diagnosis, repair, and prevention activities - is time-consuming and error-prone. Various automatic approaches supporting these activities have been pr...
SMV methodology enhancements for high speed I/O links of SoCs
Found in: 2014 IEEE 32nd VLSI Test Symposium (VTS)
By Andres Viveros-Wacher,Ricardo Alejos,Liliana Alvarez,Israel Diaz-Castro,Brenda Marcial,Gaston Motola-Acuna,Edgar-Andrei Vega-Ochoa
Issue Date:April 2014
pp. 1-5
This paper presents an enhanced methodology to validate High Speed I/O links. The methodology outlines a stress method selection process, statistical techniques to optimize volume data collection as well as a method to determine when to perform UPM calcula...
MuSA: Multivariate Sampling Algorithmfor Wireless Sensor Networks
Found in: IEEE Transactions on Computers
By Andre L. L. Aquino,Orlando S. Junior,Alejandro C. Frery,Edler Lins de Albuquerque,Raquel A. F. Mini
Issue Date:April 2014
pp. 968-978
A wireless sensor network can be used to collect and process environmental data, which is often of multivariate nature. This work proposes a multivariate sampling algorithm based on component analysis techniques in wireless sensor networks. To improve the ...
Student Projects Involving Novel Interaction with Large Displays
Found in: IEEE Computer Graphics and Applications
By Paulo Dias,Tiago Sousa,Joao Parracho,Igor Cardoso,Andre Monteiro,Beatriz Sousa Santos
Issue Date:March 2014
pp. 80-86
DETI-Interact is an interactive system that offers information relevant to students in the lobby of the University of Aveiro's Department of Electronics, Telecommunications and Informatics (DETI). The project started in 2009 with a master's thesis addressi...
BIIIG: Enabling business intelligence with integrated instance graphs
Found in: 2014 IEEE 30th International Conference on Data Engineering Workshops (ICDEW)
By Andre Petermann,Martin Junghanns,Robert Muller,Erhard Rahm
Issue Date:March 2014
pp. 4-11
We propose a new graph-based framework for business intelligence called BIIIG supporting the flexible evaluation of relationships between data instances. It builds on the broad availability of interconnected objects in existing business information systems...
Computer supported collective action
Found in: interactions
By Aaron Shaw, Andrés Monroy-Hernández, Benjamin Mako Hill, Elizabeth Gerber, Haoqi Zhang, Patrick Minder, Peter Kinnaird, Sean Munson
Issue Date:March 2014
pp. 74-77
Social media has become globally ubiquitous, transforming how people are networked and mobilized. This forum explores research and applications of these new networked publics at individual, organizational, and societal levels. ---Shelly Farnham, Editor
Simulations on Consumer Tests: A Perspective for Driver Assistance Systems
Found in: Proceedings of International Workshop on Engineering Simulations for Cyber-Physical Systems (ES4CPS '14)
By André Leschke, Bernhard Rumpe, Delf Block, Sönke Heeren, Stefan Kühnel, Vladislavs Serebro
Issue Date:March 2014
pp. 38-43
This article discusses new challenges for series development regarding the vehicle safety that arise from the recently published AEB test protocol by the consumer-test-organisation EuroNCAP for driver assistance systems [6]. The tests from the test protoco...
Increasing the expressivity of humanoid robots with variable gestural expressions
Found in: Proceedings of the 2014 ACM/IEEE international conference on Human-robot interaction (HRI '14)
By Andre Viergutz, Raimund Dachselt, Tamara Flemisch
Issue Date:March 2014
pp. 314-315
This work aims at establishing a more variable, and thus attractive, communication with humanoids. For this purpose we developed a method of dynamically expressing emotions and intentions associated with parametrised gestures. First, gestures and possible ...
Easy authoring of variable gestural expressions for a humanoid robot
Found in: Proceedings of the 2014 ACM/IEEE international conference on Human-robot interaction (HRI '14)
By André Viergutz, Raimund Dachselt, Tamara Flemisch
Issue Date:March 2014
pp. 328-328
This demonstration on the Nao robot uses the selection of behavior based on a feedback type and an expressivity value to generate and execute appropriate feedback. It aims to ease the authoring process by using variable gestures.
Would you like to play with me?: how robots' group membership and task features influence human-robot interaction
Found in: Proceedings of the 2014 ACM/IEEE international conference on Human-robot interaction (HRI '14)
By Dieta Kuchenbrandt, Elisabeth André, Markus Häring
Issue Date:March 2014
pp. 9-16
In the present experiment, we investigated how robots' social category membership and characteristics of an HRI task affect humans' evaluative and behavioral reactions toward robots. Participants (N = 38) played a card game together with two robots, one be...
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