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Universidade Federal do Rio de Janeiro
(38 results)-
White Papers
Decision Support System for Diagnosis of Power Transformers
September 25, 2009, 12:00am PDT
Given the complexity of the Brazilian Electric Power System, it is important to ensure that equipments work in satisfactory conditions and with high levels of reliability. Within those equipments,...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Resource Consumption Analysis for a Structural Health Monitoring Algorithm Using Wireless Sensor Networks
May 5, 2010, 12:00am PDT
This paper presents a partial evaluation of a fully decentralized approach to detect, localize and determine the extent of damage on civil structures in environments that range from offshore oil...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Deepwater Monitoring System Using Logistic-Support Vessels in Underwater Sensor Networks
March 2, 2011, 12:00am PST
This paper proposes a deepwater monitoring system built with sensors distributed over the subsea pipelines which are responsible for transportation of oil production. Data transmission is...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
XNetMon: A Network Monitor for Securing Virtual Networks
September 21, 2010, 12:00am PDT
Isolation and performance are critical issues for virtual networking. In this paper, the authors consider the use of Xen virtualization platform for building software-based virtual routers. They...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
An Experimental Analysis of Routing Inconsistency in Indoor Wireless Mesh Networks
April 18, 2011, 12:00am PDT
As of today, many routing protocols for wireless mesh networks have been proposed. Nevertheless, quite a few take the high loss rate of control packets into account. This paper analyzes the...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Channel Sensing Order for Cognitive Radio Networks Using Reinforcement Learning
August 4, 2011, 12:00am PDT
This paper investigates the problem of channel sensing order used by a cognitive multichannel network, where each user is able to perform primary user detection on only one channel at a time. The...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
VNEXT: Virtual Network Management for Xen-Based Testbeds
July 20, 2011, 12:00am PDT
Network testbeds strongly rely on virtualization that allows the simultaneous execution of multiple protocol stacks but also increases the management and control tasks. This paper presents a...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
XTC: A Throughput Control Mechanism for Xen-Based Virtualized Software Routers
August 30, 2011, 12:00am PDT
Xen is a tool for hardware virtualization often used to build virtual routers. Xen, however, does not assure the fundamental requirement of network isolation among these routers. This paper...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Deep-Ocean Data Acquisition Using Underwater Sensor Networks
March 18, 2010, 12:00am PDT
The traditional approach of ocean data acquisition, based on the deployment of battery operated stations with sensors for data recording during some programmed time for later recovery, has several...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Veer: A Trajectory-Based Peer Selection Algorithm for Networks of Vehicles
May 3, 2010, 12:00am PDT
The authors propose Veer, a peer selection algorithm for file exchange in vehicular ad hoc networks. The innovative aspect of Veer is that it relies on embedded GPS devices to determine individual...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
OpenFlow and Xen-Based Virtual Network Migration
May 27, 2010, 12:00am PDT
Migration is an important feature for network virtualization because it allows the reallocation of virtual resources over the physical resources. In this paper, the authors investigate the...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Virtual Networks: Isolation, Performance, and Trends
June 14, 2010, 12:00am PDT
Currently, there is a strong effort of the research community in rethinking the Internet architecture to cope with its current limitations and support new requirements. Many researchers conclude...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Evaluating Virtual Router Performance for the Future Internet
June 9, 2010, 12:00am PDT
The Internet is ossified. It is difficult to create new services or innovate in the core of the network. In order to address this issue, the authors need a new Internet model to council the...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Distributed Broadcast Scheduling in Mobile Ad Hoc Networks
May 3, 2010, 12:00am PDT
Data and control messages broadcasting is a widely used mechanism in network applications and protocols, which can have latency requirements for the information delivery. One solution to achieve...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
The Impact of Joint Routing and Link Scheduling on the Performance of Wireless Mesh Networks
July 28, 2010, 12:00am PDT
Increasing the capacity of wireless mesh networks has motivated numerous studies. In this paper, link scheduling has been one of the most investigated mechanisms. However, the isolated use of...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Virtualization for Load Balancing on IEEE 802.11 Networks
July 19, 2010, 12:00am PDT
In IEEE 802.11 networks composed by multiple APs, before a station can access the network it needs to make a decision about which AP to associate with. Usually, legacy 802.11 stations use no more...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Minimum Loss Multiplicative Routing Metrics for Wireless Mesh Networks
November 6, 2010, 12:00am PDT
Wireless mesh networks are low-cost self-configurable multi-hop networks. This paper presents a study about the main routing metrics used in this kind of network, pointing out their virtues and...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
TDCS: A New Mechanism for Automatic Channel Assignment for Independent IEEE 802.11 Networks
May 18, 2009, 12:00am PDT
In the last few years, IEEE 802.11 applications have experienced a significant growth. This expansion creates scenarios where distinct administrators manage wireless networks. These scenarios lack...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Measuring the Capacity of In-Car to In-Car Vehicular Networks
September 2, 2009, 12:00am PDT
A particular class of vehicular networks is the one that includes off-the-shelf end-user equipments (e.g., laptops and PDAs) running from the interior of vehicles, namely in-car nodes. They are...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Underwater Sensor Networks: A Feasibility Study
November 5, 2009, 12:00am PST
UnderWater Sensor Network (UWSN) is considered to be feasible and suitable for several applications. However, the characteristics of the acoustic channel must be taken into account on the...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Analyzing a Human-based Trust Model for Mobile Ad Hoc Networks
January 1, 2011, 12:00am PST
This paper analyzes a trust model for mobile ad hoc networks. The authors provide nodes with a mechanism to build a trust relationship with its neighbors. The proposed model considers the...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
A Trust Model Robust to Slander Attacks in Ad Hoc Networks
May 21, 2008, 12:00am PDT
Slander attacks represent a significant danger to distributed reputation systems. Malicious nodes may collude to lie about the reputation of a particular neighbor and cause serious damage to the...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
An Efficient Group Key Management for Secure Routing in Ad Hoc Networks
August 15, 2008, 12:00am PDT
This paper proposes and specifies a protocol for distributing and managing group keys in ad hoc environments, which applies for the Secure Optimized Link State Routing Protocol. The protocol...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
WPR: A Proactive Routing Protocol Tailored to Wireless Mesh Networks
August 15, 2008, 12:00am PDT
This paper proposes the Wireless-mesh-network Proactive Routing (WPR) protocol for wireless mesh networks. Unlike current routing protocols, such as the Optimized Link-State Routing (OLSR), WPR...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
An Efficient Admission Control Mechanism for Optical Burst-Switched Networks
July 29, 2008, 12:00am PDT
This paper proposes the Load-Level-Based Admission Control mechanism (LLAC) in order to provide service differentiation for optical burst-switched networks. The LLAC mechanism admits bursts of a...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
On the Impact of User Mobility on Peer-to-Peer Video Streaming
August 1, 2008, 12:00am PDT
Wireless Mesh Networks (WMNs) are emerging as a promising solution for ubiquitous Internet access with mobility support. In such networks, user mobility may lead to Internet gateway changes and,...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Implementing the Expected Transmission Time Metric for OLSR Wireless Mesh Networks
October 3, 2008, 12:00am PDT
This paper presents the design of a plug-in for the Optimized Link State Routing (OLSR) protocol with the Expected Transmission Time (ETT) metric and experiments in an indoor testbed. The ETT...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Collaborative Transport Control Protocol for Sensor Networks
September 10, 2008, 12:00am PDT
This paper presents Collaborative Transport Control Protocol (CTCP), a new transport protocol for sensor networks. It aims at providing end-to-end reliability and adapts itself to different...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Mobility Support for Wireless Sensor Networks
September 10, 2008, 12:00am PDT
This paper proposes a two-tier approach for mobility support in wireless sensor networks. It is based on local interactions among sensors, on global tasks of mobile agents and on location...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
CTCP: Reliable Transport Control Protocol for Sensor Networks
October 27, 2008, 12:00am PDT
This paper presents Collaborative Transport Control Protocol (CTCP), a new transport protocol for sensor networks. It aims at providing end-to-end reliability and adapts itself to different...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Virtual Interface for Collaborative Work With RECOLLVE
November 13, 2008, 12:00am PST
The world globalization process, the increasing demand of communication and information technologies creates an enormous demand for collaborative applications. Aiming to support communication,...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Privileging Long-life Packets in Multihop Wireless Networks
July 3, 2007, 12:00am PDT
The typical application of wireless mesh networks is Internet access. This application introduces a gateway, which becomes the preferred destination in the network. In such topology, the...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
An Efficient Data Transport Protocol for Event-Driven Field-Estimation on Sensor Networks
January 1, 2011, 12:00am PST
This paper introduces and analyzes an Event-Driven Field-Estimation (EDFE) protocol for wireless sensor networks. In the authors' field estimation scheme the sensors derive their own notion of...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Routing Metrics and Protocols for Wireless Mesh Networks
October 15, 2007, 12:00am PDT
Wireless Mesh Networks (WMNs) are low-cost access networks built on cooperative routing over a backbone composed of stationary wireless routers. WMNs must deal with the highly unstable wireless...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
An Enhanced Routing Metric for Fading Wireless Channels
October 3, 2007, 12:00am PDT
In this paper, the authors propose the enhancement of routing metrics through a more complete view of the physical channel. Using cross-layer optimizations, they develop the Distribution Based...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Evaluating Voice Traffic Requirements on IEEE 802.11 Ad Hoc Networks
January 16, 2008, 12:00am PST
This paper analyzes voice transmission capacity on IEEE 802.11 ad hoc networks by performing simulations related to delay, jitter, loss rate, and consecutive losses. The authors evaluate the...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Distributed Database Research at COPPE/UFRJ
June 1, 2011, 12:00am PDT
The authors' group has been working with different aspects of distributed and parallel processing of databases in the relational, object-oriented, and XML data models. Classic techniques for...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Local Heuristic for the Refinement of Multi-Path Routing in Wireless Mesh Networks
March 8, 2012, 12:00am PST
The authors consider wireless mesh networks and the problem of routing end-to-end traffic over multiple paths for the same origin-destination pair with minimal interference. They introduce a...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Local Heuristic for the Refinement of Multi-Path Routing in Wireless Mesh Networks
March 8, 2012, 12:00am PST
The authors consider wireless mesh networks and the problem of routing end-to-end traffic over multiple paths for the same origin-destination pair with minimal interference. They introduce a...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Distributed Database Research at COPPE/UFRJ
June 1, 2011, 12:00am PDT
The authors' group has been working with different aspects of distributed and parallel processing of databases in the relational, object-oriented, and XML data models. Classic techniques for...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Evaluating Voice Traffic Requirements on IEEE 802.11 Ad Hoc Networks
January 16, 2008, 12:00am PST
This paper analyzes voice transmission capacity on IEEE 802.11 ad hoc networks by performing simulations related to delay, jitter, loss rate, and consecutive losses. The authors evaluate the...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
An Enhanced Routing Metric for Fading Wireless Channels
October 3, 2007, 12:00am PDT
In this paper, the authors propose the enhancement of routing metrics through a more complete view of the physical channel. Using cross-layer optimizations, they develop the Distribution Based...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Routing Metrics and Protocols for Wireless Mesh Networks
October 15, 2007, 12:00am PDT
Wireless Mesh Networks (WMNs) are low-cost access networks built on cooperative routing over a backbone composed of stationary wireless routers. WMNs must deal with the highly unstable wireless...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
An Efficient Data Transport Protocol for Event-Driven Field-Estimation on Sensor Networks
January 1, 2011, 12:00am PST
This paper introduces and analyzes an Event-Driven Field-Estimation (EDFE) protocol for wireless sensor networks. In the authors' field estimation scheme the sensors derive their own notion of...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Privileging Long-life Packets in Multihop Wireless Networks
July 3, 2007, 12:00am PDT
The typical application of wireless mesh networks is Internet access. This application introduces a gateway, which becomes the preferred destination in the network. In such topology, the...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Virtual Interface for Collaborative Work With RECOLLVE
November 13, 2008, 12:00am PST
The world globalization process, the increasing demand of communication and information technologies creates an enormous demand for collaborative applications. Aiming to support communication,...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
CTCP: Reliable Transport Control Protocol for Sensor Networks
October 27, 2008, 12:00am PDT
This paper presents Collaborative Transport Control Protocol (CTCP), a new transport protocol for sensor networks. It aims at providing end-to-end reliability and adapts itself to different...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Mobility Support for Wireless Sensor Networks
September 10, 2008, 12:00am PDT
This paper proposes a two-tier approach for mobility support in wireless sensor networks. It is based on local interactions among sensors, on global tasks of mobile agents and on location...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Collaborative Transport Control Protocol for Sensor Networks
September 10, 2008, 12:00am PDT
This paper presents Collaborative Transport Control Protocol (CTCP), a new transport protocol for sensor networks. It aims at providing end-to-end reliability and adapts itself to different...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Implementing the Expected Transmission Time Metric for OLSR Wireless Mesh Networks
October 3, 2008, 12:00am PDT
This paper presents the design of a plug-in for the Optimized Link State Routing (OLSR) protocol with the Expected Transmission Time (ETT) metric and experiments in an indoor testbed. The ETT...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
On the Impact of User Mobility on Peer-to-Peer Video Streaming
August 1, 2008, 12:00am PDT
Wireless Mesh Networks (WMNs) are emerging as a promising solution for ubiquitous Internet access with mobility support. In such networks, user mobility may lead to Internet gateway changes and,...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
An Efficient Admission Control Mechanism for Optical Burst-Switched Networks
July 29, 2008, 12:00am PDT
This paper proposes the Load-Level-Based Admission Control mechanism (LLAC) in order to provide service differentiation for optical burst-switched networks. The LLAC mechanism admits bursts of a...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
WPR: A Proactive Routing Protocol Tailored to Wireless Mesh Networks
August 15, 2008, 12:00am PDT
This paper proposes the Wireless-mesh-network Proactive Routing (WPR) protocol for wireless mesh networks. Unlike current routing protocols, such as the Optimized Link-State Routing (OLSR), WPR...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
An Efficient Group Key Management for Secure Routing in Ad Hoc Networks
August 15, 2008, 12:00am PDT
This paper proposes and specifies a protocol for distributing and managing group keys in ad hoc environments, which applies for the Secure Optimized Link State Routing Protocol. The protocol...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
A Trust Model Robust to Slander Attacks in Ad Hoc Networks
May 21, 2008, 12:00am PDT
Slander attacks represent a significant danger to distributed reputation systems. Malicious nodes may collude to lie about the reputation of a particular neighbor and cause serious damage to the...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Analyzing a Human-based Trust Model for Mobile Ad Hoc Networks
January 1, 2011, 12:00am PST
This paper analyzes a trust model for mobile ad hoc networks. The authors provide nodes with a mechanism to build a trust relationship with its neighbors. The proposed model considers the...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Underwater Sensor Networks: A Feasibility Study
November 5, 2009, 12:00am PST
UnderWater Sensor Network (UWSN) is considered to be feasible and suitable for several applications. However, the characteristics of the acoustic channel must be taken into account on the...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Measuring the Capacity of In-Car to In-Car Vehicular Networks
September 2, 2009, 12:00am PDT
A particular class of vehicular networks is the one that includes off-the-shelf end-user equipments (e.g., laptops and PDAs) running from the interior of vehicles, namely in-car nodes. They are...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
TDCS: A New Mechanism for Automatic Channel Assignment for Independent IEEE 802.11 Networks
May 18, 2009, 12:00am PDT
In the last few years, IEEE 802.11 applications have experienced a significant growth. This expansion creates scenarios where distinct administrators manage wireless networks. These scenarios lack...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Minimum Loss Multiplicative Routing Metrics for Wireless Mesh Networks
November 6, 2010, 12:00am PDT
Wireless mesh networks are low-cost self-configurable multi-hop networks. This paper presents a study about the main routing metrics used in this kind of network, pointing out their virtues and...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Virtualization for Load Balancing on IEEE 802.11 Networks
July 19, 2010, 12:00am PDT
In IEEE 802.11 networks composed by multiple APs, before a station can access the network it needs to make a decision about which AP to associate with. Usually, legacy 802.11 stations use no more...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
The Impact of Joint Routing and Link Scheduling on the Performance of Wireless Mesh Networks
July 28, 2010, 12:00am PDT
Increasing the capacity of wireless mesh networks has motivated numerous studies. In this paper, link scheduling has been one of the most investigated mechanisms. However, the isolated use of...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Distributed Broadcast Scheduling in Mobile Ad Hoc Networks
May 3, 2010, 12:00am PDT
Data and control messages broadcasting is a widely used mechanism in network applications and protocols, which can have latency requirements for the information delivery. One solution to achieve...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Evaluating Virtual Router Performance for the Future Internet
June 9, 2010, 12:00am PDT
The Internet is ossified. It is difficult to create new services or innovate in the core of the network. In order to address this issue, the authors need a new Internet model to council the...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Virtual Networks: Isolation, Performance, and Trends
June 14, 2010, 12:00am PDT
Currently, there is a strong effort of the research community in rethinking the Internet architecture to cope with its current limitations and support new requirements. Many researchers conclude...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
OpenFlow and Xen-Based Virtual Network Migration
May 27, 2010, 12:00am PDT
Migration is an important feature for network virtualization because it allows the reallocation of virtual resources over the physical resources. In this paper, the authors investigate the...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Veer: A Trajectory-Based Peer Selection Algorithm for Networks of Vehicles
May 3, 2010, 12:00am PDT
The authors propose Veer, a peer selection algorithm for file exchange in vehicular ad hoc networks. The innovative aspect of Veer is that it relies on embedded GPS devices to determine individual...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Deep-Ocean Data Acquisition Using Underwater Sensor Networks
March 18, 2010, 12:00am PDT
The traditional approach of ocean data acquisition, based on the deployment of battery operated stations with sensors for data recording during some programmed time for later recovery, has several...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
XTC: A Throughput Control Mechanism for Xen-Based Virtualized Software Routers
August 30, 2011, 12:00am PDT
Xen is a tool for hardware virtualization often used to build virtual routers. Xen, however, does not assure the fundamental requirement of network isolation among these routers. This paper...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
VNEXT: Virtual Network Management for Xen-Based Testbeds
July 20, 2011, 12:00am PDT
Network testbeds strongly rely on virtualization that allows the simultaneous execution of multiple protocol stacks but also increases the management and control tasks. This paper presents a...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Channel Sensing Order for Cognitive Radio Networks Using Reinforcement Learning
August 4, 2011, 12:00am PDT
This paper investigates the problem of channel sensing order used by a cognitive multichannel network, where each user is able to perform primary user detection on only one channel at a time. The...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
An Experimental Analysis of Routing Inconsistency in Indoor Wireless Mesh Networks
April 18, 2011, 12:00am PDT
As of today, many routing protocols for wireless mesh networks have been proposed. Nevertheless, quite a few take the high loss rate of control packets into account. This paper analyzes the...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
XNetMon: A Network Monitor for Securing Virtual Networks
September 21, 2010, 12:00am PDT
Isolation and performance are critical issues for virtual networking. In this paper, the authors consider the use of Xen virtualization platform for building software-based virtual routers. They...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Deepwater Monitoring System Using Logistic-Support Vessels in Underwater Sensor Networks
March 2, 2011, 12:00am PST
This paper proposes a deepwater monitoring system built with sensors distributed over the subsea pipelines which are responsible for transportation of oil production. Data transmission is...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Resource Consumption Analysis for a Structural Health Monitoring Algorithm Using Wireless Sensor Networks
May 5, 2010, 12:00am PDT
This paper presents a partial evaluation of a fully decentralized approach to detect, localize and determine the extent of damage on civil structures in environments that range from offshore oil...
Provided by Universidade Federal do Rio de Janeiro
-
White Papers
Decision Support System for Diagnosis of Power Transformers
September 25, 2009, 12:00am PDT
Given the complexity of the Brazilian Electric Power System, it is important to ensure that equipments work in satisfactory conditions and with high levels of reliability. Within those equipments,...
Provided by Universidade Federal do Rio de Janeiro
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