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Articles 1 - 14 of 14
Full-Text Articles in Computer Engineering
1891 Eruption Of Foerstner Volcano (Pantelleria, Sicily): Insights Into The Vent Structure Of Basaltic Balloon Eruptions, J. Kelly, S. Carey, K. Croff-Bell, C. Roman, M. Rosi, M. Marani, M. Pistolesi, E. Baker
1891 Eruption Of Foerstner Volcano (Pantelleria, Sicily): Insights Into The Vent Structure Of Basaltic Balloon Eruptions, J. Kelly, S. Carey, K. Croff-Bell, C. Roman, M. Rosi, M. Marani, M. Pistolesi, E. Baker
Christopher N. Roman
AGU session number V21A-2750.
At The Tone, The Time Will Be... Unknown – A Perspective On The Evolution Of Time In Telecommunications, Robert Iannucci
At The Tone, The Time Will Be... Unknown – A Perspective On The Evolution Of Time In Telecommunications, Robert Iannucci
Robert A Iannucci
No abstract provided.
A Pipeline For Structured Light Bathymetric Mapping, Gabrielle Inglis, Clara Smart, J. Vaughn, Chris Roman
A Pipeline For Structured Light Bathymetric Mapping, Gabrielle Inglis, Clara Smart, J. Vaughn, Chris Roman
Christopher N. Roman
This paper details a methodology for using structured light laser imaging to create high resolution bathymetric maps of the sea floor. The system includes a pair of stereo cameras and an inclined 532nm sheet laser mounted to a remotely operated vehicle (ROV). While a structured light system generally requires a single camera, a stereo vision set up is used here for in-situ calibration of the laser system geometry by triangulating points on the laser line. This allows for quick calibration at the survey site and does not require precise jigs or a controlled environment. A batch procedure to extract the …
International Ict Research Collaboration: Experiences And Recommendations, Erich Prem, Emma Barron, Arcot Desai Narasimhalu, Ian Morgan
International Ict Research Collaboration: Experiences And Recommendations, Erich Prem, Emma Barron, Arcot Desai Narasimhalu, Ian Morgan
Arcot Desai NARASIMHALU
This paper presents results of a study into the collaboration experiences of researchers. The focus is on long-distance collaboration in information and communication technologies (ICT) research and technology development, i.e. between the EU on the one side and Australia, Singapore or New Zealand on the other. The aim of the study was to provide useful recommendations for researchers who engage in international collaboration and to improve the quality of international co-operation projects. The emphasis here is on the views and experiences of Europe"s international partners. The paper analysis collaboration motives, challenges, co-operation types and provides recommendations for project initiation, networking, …
Lachesis: A Job Scheduler For The Cray T3e, Allen B. Downey
Lachesis: A Job Scheduler For The Cray T3e, Allen B. Downey
Allen B. Downey
This paper presents the design and implementation of Lachesis, a job scheduler for the Cray T3E. Lachesis was developed at the San Diego Supercomputer Center (SDSC) in an attempt to correct some problems with the scheduling system Cray provides with the T3E.
A Long-Duration Study Of User-Trained 802.11 Localization, Andrew Barry, Benjamin Fisher, Mark Chang
A Long-Duration Study Of User-Trained 802.11 Localization, Andrew Barry, Benjamin Fisher, Mark Chang
Mark L. Chang
We present an indoor wireless localization system that is capable of room-level localization based solely on 802.11 network signal strengths and user-supplied training data. Our system naturally gathers dense data in places that users frequent while ignoring unvisited areas. By utilizing users, we create a comprehensive localization system that requires little off-line operation and no access to private locations to train. We have operated the system for over a year with more than 200 users working on a variety of laptops. To encourage use, we have implemented a live map that shows user locations in real-time, allowing for quick and …
Low-Cost Stereo Vision On An Fpga, Chris A. Murphy, Daniel Lindquist, Ann Marie Rynning, Thomas Cecil, Sarah Leavitt, Mark L. Chang
Low-Cost Stereo Vision On An Fpga, Chris A. Murphy, Daniel Lindquist, Ann Marie Rynning, Thomas Cecil, Sarah Leavitt, Mark L. Chang
Mark L. Chang
We present a low-cost stereo vision implementation suitable for use in autonomous vehicle applications and designed with agricultural applications in mind. This implementation utilizes the Census transform algorithm to calculate depth maps from a stereo pair of automotive-grade CMOS cameras. The final prototype utilizes commodity hardware, including a Xilinx Spartan-3 FPGA, to process 320times240 pixel images at greater than 150 frames per second and deliver them via a USB 2.0 interface.
Automated Least-Significant Bit Datapath Optimization For Fpgas, Mark L. Chang, Scott Hauck
Automated Least-Significant Bit Datapath Optimization For Fpgas, Mark L. Chang, Scott Hauck
Mark L. Chang
In this paper, we present a method for FPGA datapath precision optimization subject to user-defined area and error constraints. This work builds upon our previous research which presented a methodology for optimizing the dynamic range- the most significant bit position. In this work, we present an automated optimization technique for the least-significant bit position of circuit datapaths. We present results describing the effectiveness of our methods on typical signal and image processing kernels.
A User-Defined Exception Handling Framework In The View Scientific Workflow Management System, Dong Yuan, Shiyong Lu, Aravind Mohan, Xubo Fei, Jia Zhang
A User-Defined Exception Handling Framework In The View Scientific Workflow Management System, Dong Yuan, Shiyong Lu, Aravind Mohan, Xubo Fei, Jia Zhang
Jia Zhang
With the advances of e-Science, scientific workflow has become an important tool for researchers to explore scientific discoveries. Although several scientific workflow management systems (SWFMSs) have been developed, their support of exception handling is still limited. In this paper, we introduce our approach of exception handling in the VIEW scientific workflow management system. We propose an exception handling language for scientific workflows based on our workflow model. Both syntax and semantics rules of our language are presented. Different exception handling primitives, such as retry, alternative, and repeat, are supported in our language with flexibility for their composition to provide a …
Reputationnet: A Reputation Engine To Enhance Servicemap By Recommending Trusted Services, Jinhui Yao, Wei Tan, Surya Nepal, Shiping Chen, Jia Zhang, David De Roure, Carole Goble
Reputationnet: A Reputation Engine To Enhance Servicemap By Recommending Trusted Services, Jinhui Yao, Wei Tan, Surya Nepal, Shiping Chen, Jia Zhang, David De Roure, Carole Goble
Jia Zhang
The concept of Service Oriented Architecture (SOA) enables flexible and dynamic collaborations among different service providers. Backed up by SOA, scientific workflows can bring together various scientific computing tools and resources all offered as services to answer complex research questions. However, studies conducted on myExperiment show that although the sharing of service-based capabilities opens a gateway to resource reuse, in practice, the degree of reuse is very low. This motivates us to propose ServiceMap to provide navigation support through the network of services in building scientific workflows. In this paper, we propose an extension of ServiceMap, i.e., ReputationNet that incorporates …
From Agile Methods To Lean Practices: Trends In Software Development, Cécile Péraire
From Agile Methods To Lean Practices: Trends In Software Development, Cécile Péraire
Cécile Péraire
No abstract provided.
New Frontiers In Ocean Exploration: The 2010 And 2011 E/V Nautilus Field Seasons, K. Bell, R. Ballard, D. Coleman, C. Roman, M. Brennan
New Frontiers In Ocean Exploration: The 2010 And 2011 E/V Nautilus Field Seasons, K. Bell, R. Ballard, D. Coleman, C. Roman, M. Brennan
Christopher N. Roman
The Exploration Vessel NAUTILUS is creating a focus of international leadership for the development and integration of leading-edge technologies, educational programs, field operations, and public outreach programs for ocean exploration, in partnership with NOAA, National Geographic Society, Office of Naval Research, Sea Research Foundation and other sponsors. To do so, the program uses a complement of deep submergence vehicle systems and telepresence technologies to engage scientists, educators and the public, both at sea and ashore, allowing them to become integral members of the on-board exploration team. Two four-month field seasons were undertaken aboard NAUTILUS (2010-2011) to the Black, Aegean and …
An Air-Sea Flux Experiment For 2030, P. Cornillon, D. Farmer, C. Roman, I. Ginis, S. Grilli
An Air-Sea Flux Experiment For 2030, P. Cornillon, D. Farmer, C. Roman, I. Ginis, S. Grilli
Christopher N. Roman
In January 2011 the University of Rhode Island held a two day retreat for faculty and research scientists interested in where the field is going over the next 20 years. The retreat began with presentations detailing the current status and anticipated advances in genetics, nanotechnology, numerical modeling and robotics. Participants then outlined scientific problems that they expect will exist in 2030. This was followed by breakout sessions in which participants discussed experiments, based on anticipated technological advances, that might be undertaken in the 2030 time frame to address some of the identified problems. In this presentation we outline one of …
Perfil Formativo Generado En Los Entornos Cscl: Un Estudio De Caso, Ivan Jorrín Abellán
Perfil Formativo Generado En Los Entornos Cscl: Un Estudio De Caso, Ivan Jorrín Abellán
Ivan M. Jorrín Abellán
En este trabajo se presenta el "Perfil Formativo aplicable a espacios de enseñanza-aprendizaje CSCL (Computer Supported Collaborative Learning)" que ha emergido del estudio profundo de la asignatura de Arquitectura de Ordenadores de 4º Curso de la titulación de Ingeniería en Telecomunicación en la Universidad de Valladolid durante cuatro cursos académicos. Esta tesis doctoral plantea un conjunto de recomendaciones prácticas experienciales que los practicantes de este tipo de ambientes colaborativos pueden aplicar a sus procesos de diseño y puesta en práctica de espacios CSCL. Del estudio de caso analizado emergen también una propuesta de esquema de diseño de espacios CSCL, y …