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University of Ottawa
(73 results)-
White Papers
Distributed Security Algorithms for Mobile Agents
February 1, 2008, 12:00am PST
The use of mobile agents is becoming increasingly popular when computing in networked environments, ranging from Internet to the Data Grid, both as a theoretical computational paradigm and as a...
Provided by University of Ottawa
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White Papers
Multiratecast in Wireless Fault Tolerant Sensor and Actuator Networks
December 8, 2009, 12:00am PST
The authors study the multicast problem in wireless sensor networks, where the source can send data to a fixed number of destinations (actuators) at a different rate (multiratecast). A typical...
Provided by University of Ottawa
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White Papers
Topology Control in Sensor, Actuator and Mobile Robot Networks
March 30, 2010, 12:00am PDT
The efficiency of many sensor network algorithms depends on characteristics of the underlying connectivity, such as the length and density of links. It is therefore a common practice to control...
Provided by University of Ottawa
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White Papers
Multicasting, Geocasting, and Anycasting in Sensor and Actuator Networks
March 30, 2010, 12:00am PDT
This paper reviews the scenarios where a given message is sent from a single source to possibly several destinations. These scenarios can be subdivided into multicasting, geocasting,...
Provided by University of Ottawa
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White Papers
Fully Secure Pairwise and Triple Key Distribution in Wireless Sensor Networks Using Combinatorial Designs
January 11, 2011, 12:00am PST
Sensor nodes are small battery powered devices which are deployed in large numbers to sense and collect information for various applications ranging from health care to military. Sensor networks...
Provided by University of Ottawa
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White Papers
Using Diffusive Load Balancing to Improve Performance of Peer-to-Peer Systems for Hosting Services
June 5, 2011, 12:00am PDT
This paper presents a diffusive load balancing algorithm for peer-to-peer systems. The algorithm reduces the differences of the available capacities of the nodes in the system using service...
Provided by University of Ottawa
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White Papers
Applying a Diffusive Load Balancing in a Clustered P2P System
February 5, 2009, 12:00am PST
Although a large number of users are using P2P systems, the ability of these systems to provide services with quality is questioned. A load balanced P2P system can provide services with smaller...
Provided by University of Ottawa
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White Papers
Some Modeling Challenges When Testing Rich Internet Applications for Security
March 19, 2010, 12:00am PDT
Web-based applications are becoming more ubiquitous day by day, and among these applications, a new trend is emerging: Rich Internet Applications (RIAs), using technologies such as Ajax, Flex, or...
Provided by University of Ottawa
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White Papers
A Diffusive Load Balancing Scheme for Clustered Peer-to-Peer Systems
September 30, 2009, 12:00am PDT
Node clustering is an effective solution for achieving good performance and high reliability for Peer-To-Peer (P2P) systems. To improve the performance of a clustered P2P system, it is important...
Provided by University of Ottawa
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White Papers
Peer-to-Peer Platforms for High-Quality Web Services: The Case for Load-Balanced Clustered Peer-to-Peer Systems
July 8, 2009, 12:00am PDT
This paper presents a clustered peer-to-peer system as a resource organization structure for web-service hosting platforms where service quality such as response time and service availability are...
Provided by University of Ottawa
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White Papers
A Locality Preserving Routing Overlay Using Geographic Coordinates
October 26, 2009, 12:00am PDT
This paper presents a design for a general locality preserving routing overlay network based on geographic coordinates of nodes. For efficient use of network resources, it is important to follow...
Provided by University of Ottawa
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White Papers
CliqueStream: Creating an Efficient and Resilient Transport Overlay for Peer-to-Peer Live Streaming Using a Clustered DHT
November 30, 2008, 12:00am PST
With the widespread adoption of broadband residential Internet access, live multimedia streaming over the IP network may be envisioned as a dominating application on the next generation Internet....
Provided by University of Ottawa
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White Papers
CliqueStream: An Efficient and Fault-Resilient Live Streaming Network on a Clustered Peer-to-Peer Overlay
June 19, 2008, 12:00am PDT
Several overlay-based live multimedia streaming platforms have been proposed in the recent peer-to-peer streaming literature. In most of the cases, the overlay neighbors are chosen randomly for...
Provided by University of Ottawa
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White Papers
Adaptively Secure Broadcast Encryption With Short Ciphertexts
March 1, 2012, 12:00am PST
The authors propose an adaptively secure broadcast encryption scheme with short ciphertexts, where the size of broadcast encryption message is fixed regardless of the size of the broadcast group....
Provided by University of Ottawa
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White Papers
Hypothesis Testing and Decision Theoretic Approach for Fault Detection in Wireless Sensor Networks
March 2, 2012, 12:00am PST
Sensor networks aim at monitoring their surroundings for event detection and object tracking. But due to failure or death of sensors, false signal can be transmitted. In this paper, the authors...
Provided by University of Ottawa
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White Papers
Reasoning With Higher-Order Abstract Syntax and Contexts: A Comparison
April 8, 2010, 12:00am PDT
A variety of logical frameworks support the use of Higher-Order Abstract Syntax (HOAS) in representing formal systems given via axioms and inference rules and reasoning about them. In such...
Provided by University of Ottawa
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White Papers
Cooperative Redundancy Elimination in Data Center Networks With Wireless Cards at Routers
March 18, 2012, 12:00am PDT
The authors consider architecture of Data Center Networks (DCN), which adds wireless network card to each router. Existing Redundancy Elimination (RE) mechanisms reduce link loads and increase...
Provided by University of Ottawa
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White Papers
Expressivity of Time-Varying Graphs and the Power of Waiting in Dynamic Networks
May 9, 2012, 12:00am PDT
In infrastructure-less highly dynamic networks, computing and performing even basic tasks (such as routing and broadcasting) is a very challenging activity due to the fact that connectivity does...
Provided by University of Ottawa
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White Papers
Distributed Computing in Dynamic Networks: Towards a Framework for Automated Analysis of Algorithms
January 30, 2012, 12:00am PST
Besides the complexity in time or in number of messages, a common approach for analyzing distributed algorithms is to look at the assumptions they make on the underlying network. The authors...
Provided by University of Ottawa
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White Papers
Building Fastest Broadcast Trees in Periodically-Varying Graphs
April 13, 2012, 12:00am PDT
Delay-Tolerant Networks (DTNs) are characterized by a possible absence of end-to-end communication routes at any instant. Still, connectivity can generally be established over time and space. The...
Provided by University of Ottawa
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White Papers
Time-Varying Graphs and Dynamic Networks
February 17, 2012, 12:00am PST
The past few years have seen intensive research efforts carried out in some apparently unrelated areas of dynamic systems - delay-tolerant networks, opportunistic-mobility networks, social...
Provided by University of Ottawa
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White Papers
Measuring Temporal Lags in Delay-Tolerant Networks
May 20, 2011, 12:00am PDT
Delay-Tolerant Networks (DTNs) are characterized by a possible absence of end-to-end communication routes at any instant. In most cases, however, a form of connectivity can be established over...
Provided by University of Ottawa
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White Papers
On the Temporal Analysis of Scientific Network Evolution
August 20, 2011, 12:00am PDT
In this paper, the authors approach the definition of new methodologies for the visualization and the exploration of social networks and their dynamics. They present a recently introduced...
Provided by University of Ottawa
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White Papers
On the Feasibility of Maintenance Algorithms in Dynamic Graphs
February 17, 2012, 12:00am PST
Near ubiquitous mobile computing has led to intense interest in dynamic graph theory. This provides a new and challenging setting for algorithmic and complexity theory. For any graph-based...
Provided by University of Ottawa
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White Papers
Deterministic Computations in Time-Varying Graphs: Broadcasting Under Unstructured Mobility
May 6, 2010, 12:00am PDT
Most highly dynamic infrastructure-less networks have in common that the assumption of connectivity does not necessarily hold at a given instant. Still, communication routes can be available...
Provided by University of Ottawa
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White Papers
Characterizing Topological Assumptions of Distributed Algorithms in Dynamic Networks
June 1, 2009, 12:00am PDT
Besides the complexity in time or in number of messages, a common approach for analyzing distributed algorithms is to look at their assumptions on the underlying network. This paper focuses on the...
Provided by University of Ottawa
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Whitepapers
Autoregressive Trust Management in Wireless Ad Hoc Networks
November 2, 2011, 12:00am PDT
In this paper, the authors propose a novel trust management scheme for improving routing reliability in wireless ad hoc networks. It is grounded on two classic auto-regression models, namely...
Provided by University of Ottawa
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Whitepapers
LaConf: A Localized Address Autoconfiguration Scheme for Wireless Ad Hoc Networks
October 1, 2011, 12:00am PDT
The authors propose a Localized Address auto-Configuration (LaConf) scheme for wireless ad hoc networks. Address allocation information is maintained on the network border nodes, called Addressing...
Provided by University of Ottawa
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Whitepapers
Localized Address Autoconfiguration in Wireless Ad Hoc Networks
August 11, 2010, 12:00am PDT
The authors propose a Localized Address auto-Configuration (LaConf) scheme for wireless ad hoc networks. Address allocation information is maintained on the network border nodes, called Addressing...
Provided by University of Ottawa
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Whitepapers
Carrier-Based Coverage Augmentation in Wireless Sensor and Robot Networks
March 15, 2010, 12:00am PDT
Carrier-based sensor placement involves mobile robots carrying and dropping (static) sensors for optimal coverage formation. Existing solutions target at traditional area coverage problem and...
Provided by University of Ottawa
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Whitepapers
Aspect-Oriented Feature Models
August 6, 2010, 12:00am PDT
Software Product Lines (SPLs) have emerged as a prominent approach for software reuse. SPLs are sets of software systems called families that are usually developed as a whole and share many common...
Provided by University of Ottawa
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Whitepapers
Dynamic Query Plan for Efficient Query Processing in Peer-to-Peer Environments
July 16, 2008, 12:00am PDT
In the past few years, Peer-to-Peer (P2P) applications have emerged as a popular way of autonomously sharing data and services in distributed environments. In such environments, peers dynamically...
Provided by University of Ottawa
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White Papers
Integration of RFID and Wireless Sensor Networks
July 26, 2007, 12:00am PDT
Radio Frequency Identification (RFID) and Wireless Sensor Network (WSN) are two important wireless technologies that have wide variety of applications and provide limitless future potentials....
Provided by University of Ottawa
-
White Papers
A Diffusive Load Balancing Scheme for Clustered Peer-to-Peer Systems
September 30, 2009, 12:00am PDT
Node clustering is an effective solution for achieving good performance and high reliability for Peer-To-Peer (P2P) systems. To improve the performance of a clustered P2P system, it is important...
Provided by University of Ottawa
-
White Papers
Some Modeling Challenges When Testing Rich Internet Applications for Security
March 19, 2010, 12:00am PDT
Web-based applications are becoming more ubiquitous day by day, and among these applications, a new trend is emerging: Rich Internet Applications (RIAs), using technologies such as Ajax, Flex, or...
Provided by University of Ottawa
-
White Papers
Applying a Diffusive Load Balancing in a Clustered P2P System
February 5, 2009, 12:00am PST
Although a large number of users are using P2P systems, the ability of these systems to provide services with quality is questioned. A load balanced P2P system can provide services with smaller...
Provided by University of Ottawa
-
White Papers
Using Diffusive Load Balancing to Improve Performance of Peer-to-Peer Systems for Hosting Services
June 5, 2011, 12:00am PDT
This paper presents a diffusive load balancing algorithm for peer-to-peer systems. The algorithm reduces the differences of the available capacities of the nodes in the system using service...
Provided by University of Ottawa
-
White Papers
Fully Secure Pairwise and Triple Key Distribution in Wireless Sensor Networks Using Combinatorial Designs
January 11, 2011, 12:00am PST
Sensor nodes are small battery powered devices which are deployed in large numbers to sense and collect information for various applications ranging from health care to military. Sensor networks...
Provided by University of Ottawa
-
White Papers
Multicasting, Geocasting, and Anycasting in Sensor and Actuator Networks
March 30, 2010, 12:00am PDT
This paper reviews the scenarios where a given message is sent from a single source to possibly several destinations. These scenarios can be subdivided into multicasting, geocasting,...
Provided by University of Ottawa
-
White Papers
Topology Control in Sensor, Actuator and Mobile Robot Networks
March 30, 2010, 12:00am PDT
The efficiency of many sensor network algorithms depends on characteristics of the underlying connectivity, such as the length and density of links. It is therefore a common practice to control...
Provided by University of Ottawa
-
White Papers
Multiratecast in Wireless Fault Tolerant Sensor and Actuator Networks
December 8, 2009, 12:00am PST
The authors study the multicast problem in wireless sensor networks, where the source can send data to a fixed number of destinations (actuators) at a different rate (multiratecast). A typical...
Provided by University of Ottawa
-
White Papers
Distributed Security Algorithms for Mobile Agents
February 1, 2008, 12:00am PST
The use of mobile agents is becoming increasingly popular when computing in networked environments, ranging from Internet to the Data Grid, both as a theoretical computational paradigm and as a...
Provided by University of Ottawa
-
White Papers
Localized Movement Control for Fault Tolerance of Mobile Robot Networks
November 19, 2007, 12:00am PST
In this paper, the authors present a novel localized movement control algorithm to form a fault-tolerant bi-connected robotic network topology from a connected network, such that total distance of...
Provided by University of Ottawa
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White Papers
Exploiting Actuator Mobility for Energy-Efficient Data Collection in Delay-Tolerant Wireless Sensor Networks
January 19, 2009, 12:00am PST
A Wireless Sensor Network (WSN) is a large-scale ad hoc multi-hop network deployed (usually, at random) in a region of interest for surveillance purpose. One of its fundamental tasks is to gather...
Provided by University of Ottawa
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White Papers
Localized Sensor Self-Deployment for Guaranteed Coverage Radius Maximization
February 19, 2009, 12:00am PST
Focused coverage is defined as the coverage of a wireless sensor network surrounding a Point Of Interest (POI), and is measured by coverage radius, i.e., minimum distance from POI to uncovered...
Provided by University of Ottawa
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White Papers
The One-Commodity Traveling Salesman Problem With Selective Pickup and Delivery: An Ant Colony Approach
May 2, 2010, 12:00am PDT
The authors introduce a novel combinatorial optimization problem: the One-commodity Traveling Salesman Problem with SELective Pickup and Delivery (1-TSP-SELPD), characterized by the fact that the...
Provided by University of Ottawa
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White Papers
Localized Energy Efficient Broadcast for Wireless Networks With Directional Antennas
January 1, 2011, 12:00am PST
Directional antennas reduce the beamwidth angle to diffuse the radio transmission to one direction and thus useless energy than omnidirectional antennas. Combined with the idea of reducing the...
Provided by University of Ottawa
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White Papers
Towards A Cloud Optimization Architecture Using Strategy-Trees
November 9, 2010, 12:00am PST
Cloud computing represents an emerging approach to on-demand computing. This paper proposes an extension to a three-layered cloud computing architecture through the use of strategy-trees. Managers...
Provided by University of Ottawa
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White Papers
A Real-Time Browser-Based Collaboration System for Synchronized Online Multimedia Sharing
November 9, 2010, 12:00am PST
The amount of multimedia content on the web has been growing at a staggering rate, and users are increasingly looking to share it with colleagues and friends in real-time. Several commercial, open...
Provided by University of Ottawa
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White Papers
A Dominating Sets and Target Radius Based Localized Activity Scheduling and Minimum Energy Broadcast Protocol for Ad Hoc and Sensor Networks
January 1, 2011, 12:00am PST
Several localized broadcasting protocols for ad hoc and sensor networks were proposed recently, with the goal of minimizing the energy consumption, while still guaranteeing a total coverage of the...
Provided by University of Ottawa
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White Papers
Complexity Analysis of Featured-Based Image Matching
December 3, 2009, 12:00am PST
fundamental problem in computer vision is to map a pixel in one image to a pixel in another image of the same scene. This is called the image correspondence problem. Many algorithms have been...
Provided by University of Ottawa
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White Papers
A Two-Stage Architecture for Classification of Peer-to-Peer Traffic Using Fast Decision Tree
April 30, 2008, 12:00am PDT
The authors present a two-stage architecture for classification of Peer-To-Peer (P2P) traffic, where in the first stage, the traffic is filtered using standard port numbers and layer 4 port...
Provided by University of Ottawa
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White Papers
Efficient Algorithm for Redundant Reader Elimination in Wireless RFID Networks
May 1, 2010, 12:00am PDT
Radio Frequency IDentification (RFID) systems, due to recent technological advances, are being deployed in large scale for different applications. However, this requires a dense deployment of...
Provided by University of Ottawa
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White Papers
Magnetic-Field Coupling Characteristics of Ferrite-Coil Antennas for Low-Frequency RFID Applications
July 1, 2010, 12:00am PDT
Low-frequency technology has been widely used for detecting objects placed underground. Low-frequency Radio-Frequency IDentification (RFID) systems provide the advantage of better propagation in...
Provided by University of Ottawa
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White Papers
Distributed Maintenance of Anytime Available Spanning Trees in Dynamic Networks
April 20, 2009, 12:00am PDT
This paper investigates the problem of building and maintaining distributed spanning trees in dynamic networks. Contrarily to previous solutions, the authors do not assume the existence of...
Provided by University of Ottawa
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White Papers
Overlay Structure for Large Scale Content Sharing: Leveraging Geography as the Basis for Routing Locality
March 24, 2009, 12:00am PDT
In this paper the authors place the arguments on two related issues in the design of generalized structured peer-to-peer overlays. First, they argue that for the large-scale content-sharing...
Provided by University of Ottawa
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White Papers
Decentralized Management of Bi-Modal Network Resources in a Distributed Stream Processing Platform
March 24, 2009, 12:00am PDT
This paper presents resource management techniques for allocating communication and computational resources in a distributed stream processing platform. The platform is designed to exploit the...
Provided by University of Ottawa
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White Papers
GeoP2P: An Adaptive Peer-to-Peer Overlay for Efficient Search and Update of Spatial Information
March 22, 2009, 12:00am PDT
This paper proposes a fully decentralized peer-to-peer overlay structure GeoP2P, to facilitate geographic location based search and retrieval of information. Certain limitations of centralized...
Provided by University of Ottawa
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White Papers
Data-Centric Misbehavior Detection in VANETs
March 12, 2011, 12:00am PST
Detecting misbehavior (such as transmissions of false information) in Vehicular Ad hoc NETworks (VANETs) is very important problem with wide range of implications including safety related and...
Provided by University of Ottawa
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White Papers
On The Determinants Of The Reach Of Innovation-Related Collaboration In Small Firms
March 15, 2010, 12:00am PDT
This paper takes as its starting point an item of relatively recent academic orthodoxy: the insistence that 'Interactive learning and collective entrepreneurship are fundamental to the process of...
Provided by University of Ottawa
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White Papers
GPS Based Distributed Routing Algorithms for Wireless Networks
January 1, 2010, 12:00am PST
Recently, several fully distributed (localized) GPS based routing protocols for a Mobile Ad hoc NETwork (MANET) were reported in literature. They are variations of directional (DIR) routing...
Provided by University of Ottawa
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White Papers
A Distributed Camera Network Architecture Supporting Video Adaptation
June 24, 2009, 12:00am PDT
Sparked by the desire to secure human presence in high risk areas, this paper proposes a distributed camera network architecture. This architecture is intended as a robust platform for video...
Provided by University of Ottawa
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White Papers
Specification and Validation of Telephone Systems in LOTOS
January 1, 2010, 12:00am PST
LOTOS (Language of Temporal Ordering Specification) is a Formal Description Technique that was developed by the ISO for the specification of OSI services and protocols. This paper presents a...
Provided by University of Ottawa
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White Papers
Using Geometrical Routing for Overlay Networking in MMOGs
June 3, 2009, 12:00am PDT
Massively Multiplayer Online Games (MMOG) is one of the brightest assets in the world of e-Entertainment. The primary interest of MMOG applications is to transfer huge amounts of update messages...
Provided by University of Ottawa
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White Papers
Integration of RFID and Wireless Sensor Networks
July 26, 2007, 12:00am PDT
Radio Frequency Identification (RFID) and Wireless Sensor Network (WSN) are two important wireless technologies that have wide variety of applications and provide limitless future potentials....
Provided by University of Ottawa
-
White Papers
PKI: Ten Years Later
December 1, 2007, 12:00am PST
This paper examines the history and evolution of so-called Public Key Infrastructure (PKI). It compares the original definition of PKI with a broader and more flexible definition that better...
Provided by University of Ottawa
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