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University of Calgary
(77 results)-
White Papers
Image Management in a Virtualized Data Center
May 22, 2008, 12:00am PDT
Industrial research firms such as Gartner and IDC are predicting an explosion in the number of online services in the coming years. Virtualization technologies could play an important role in such...
Provided by University of Calgary
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White Papers
Benchmarking Modern Web Browsers
August 15, 2008, 12:00am PDT
With the introduction of the first graphical web browser Mosaic in 1993, the World Wide Web (WWW) was made accessible to the world and since then web browsers are increasingly being challenged to...
Provided by University of Calgary
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White Papers
Improved Port Knocking With Strong Authentication
January 1, 2010, 12:00am PST
Sometimes, it becomes necessary to let only the authorized external users access the open ports whereas closed ports may be accessible to all. The paper seeks to investigate various methods of...
Provided by University of Calgary
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White Papers
A Case for Context-Aware TCP/IP
January 1, 2010, 12:00am PST
This paper discusses the design and evaluation of CATNIP, a Context-Aware Transport/Network Internet Protocol for the Web. This integrated protocol uses application-layer knowledge (i.e.,Web...
Provided by University of Calgary
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White Papers
From Desktop to Tabletop: Migrating the User Interface of AgilePlanner
July 16, 2008, 12:00am PDT
Digital tabletops are emerging interactive systems that support group collaborations. To utilize digital tabletops for agile planning meetings, authors migrated a desktop based planning tool -...
Provided by University of Calgary
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White Papers
Exploring the Characteristics, Attributes, and Perceptions of Online Graduate Students in Canadian Higher Education, and the Leadership Implications
May 29, 2009, 12:00am PDT
Higher education in North America is experiencing change impacted by globalization, evolving economies, emerging technologies, growing populations, and shifting student demographics. This is...
Provided by University of Calgary
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White Papers
Wireless Data Traffic: A Decade of Change
January 28, 2009, 12:00am PST
This paper presents an overview of the most significant changes in wireless data traffic and its main driving forces throughout the past decade (1998-2008). The main axes of change are discussed:...
Provided by University of Calgary
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White Papers
Optimization Models for Streaming in Multihop Wireless Networks
June 21, 2007, 12:00am PDT
Wireless spectrum is a scare resource, while media streaming usually requires high end-to-end bandwidth. Media streaming in wireless ad hoc networks is therefore a particularly challenging...
Provided by University of Calgary
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White Papers
A Design for an Anti-Spear-Phishing System
September 1, 2007, 12:00am PDT
Phishing is a widespread and effective computer-mediated social attack. Phishers have proven highly adaptable in terms of exploiting new communications channels witness 'Vishing' and 'SMiShing'...
Provided by University of Calgary
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White Papers
Key Exchange Protocol Over Insecure Channel
June 7, 2009, 12:00am PDT
Key management represents a major and the most sensitive part of cryptographic systems. It includes key generation, key distribution, key storage, and key deletion. It is also considered the...
Provided by University of Calgary
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White Papers
Clone Resistant Mutual Authentication for Low-Cost RFID and Contactless Credit Cards
May 8, 2007, 12:00am PDT
With Radio Frequency IDentification (RFID) tags being used to secure contactless credit cards, great benefits but also serious security and information privacy issues have arisen. Recently many...
Provided by University of Calgary
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White Papers
On Optimal Secure Message Transmission by Public Discussion
November 8, 2009, 12:00am PST
In a Secure Message Transmission (SMT) scenario a sender wants to send a message in a private and reliable way to a receiver. Sender and receiver are connected by n vertex disjoint paths, referred...
Provided by University of Calgary
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White Papers
On the Word Problem for ÓÐ-Categories, and the Properties of Two-Way Communication
April 9, 2009, 12:00am PDT
The word problem for categories with free products and co-products (sums), ÓÐ-categories, is directly related to the problem of determining the equivalence of certain processes. Indeed, the maps...
Provided by University of Calgary
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White Papers
Construction of Universal Designated-Verifier Signatures and Identity-Based Signatures From Standard Signatures
May 6, 2008, 12:00am PDT
The authors give a generic construction for universal designated-verifier signature schemes from a large class, C, of signature schemes. The resulting schemes are efficient and have two important...
Provided by University of Calgary
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White Papers
Deniable Authentication on the Internet
March 3, 2007, 12:00am PST
Deniable authentication is a technique that allows one party to send messages to another while the latter cannot prove to a third party the fact of communication. In this paper, the authors first...
Provided by University of Calgary
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White Papers
The Cost Advantage of Network Coding in Uniform Combinatorial Networks
March 30, 2008, 12:00am PDT
The coding advantage refers to the potential for network coding to improve end-to-end throughput or reduce routing cost. How large can the coding advantage be? The authors investigate this...
Provided by University of Calgary
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White Papers
Clustering Posts in Online Discussion Forum Threads
April 1, 2011, 12:00am PDT
Online discussion forums are considered a challenging repository for data mining tasks. Forums usually contain hundreds of threads which in turn consist of hundreds, or even thousands, of posts....
Provided by University of Calgary
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White Papers
What Makes APIs Difficult to Use?
April 1, 2008, 12:00am PDT
In the '70s and '80s if a programmer wanted to create software, he or she had to write pretty much everything from the scratch. But with the progress of technology and software engineering...
Provided by University of Calgary
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White Papers
Internet Traffic Identification Using Machine Learning
August 29, 2006, 12:00am PDT
Accurate classification of Internet traffic is important in many areas such as network design, network management, and network security. One key challenge in this area is to adapt to the dynamic...
Provided by University of Calgary
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White Papers
Offline/Realtime Traffic Classification Using Semi-Supervised Learning
January 1, 2011, 12:00am PST
Identifying and categorizing network traffic by application type is challenging because of the continued evolution of applications, especially of those with a desire to be undetectable. The...
Provided by University of Calgary
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White Papers
Secure Email With Fingerprint Recognition
January 9, 2009, 12:00am PST
Public key cryptographic techniques have been used to protect email messages via encryption and digital signatures for more than 26 years. Such techniques, however, failed to adopt secure email...
Provided by University of Calgary
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White Papers
Outsourcing Multi-Party Computation
May 27, 2011, 12:00am PDT
The authors initiate the study of secure Multi-Party Computation (MPC) in a server-aided setting, where the parties have access to a single server that does not have any input to the computation;...
Provided by University of Calgary
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White Papers
A Privacy Preservation Model for Facebook-Style Social Network Systems
June 27, 2009, 12:00am PDT
Recent years have seen unprecedented growth in the popularity of social network systems, with Facebook being an archetypical example. The access control paradigm behind the privacy preservation...
Provided by University of Calgary
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White Papers
Tool Support for Software Development Based on Formal Specifications in RTPA
July 1, 2009, 12:00am PDT
The benefits of formal specification methodologies in software development have been identified and well researched. Their use in mainstream software development, however, continues to face a...
Provided by University of Calgary
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White Papers
Improving Bug Tracking Systems
December 5, 2008, 12:00am PST
It is important that information provided in bug reports is relevant and complete in order to help resolve bugs quickly. However, often such information trickles to developers after several...
Provided by University of Calgary
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White Papers
Improving Quality, One Process Change at a Time
February 11, 2009, 12:00am PST
The authors report on one organization's experience making process changes in a suite of projects. The changes were motivated by clients' requests for better time estimates, better quality, better...
Provided by University of Calgary
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White Papers
A Review of Cloud Computing Security: Virtualization, Side-Channel Attacks, and Management
March 14, 2011, 12:00am PDT
In recent years cloud computing has become a growing interest for organizations looking to reduce their IT costs by offloading infrastructure and software costs onto 3rd party organizations who...
Provided by University of Calgary
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White Papers
Existence Advertising, Price Competition, And Asymmetric Market Structure
January 28, 2008, 12:00am PST
The authors examine a duopoly pricing game where some customers know of no firms, others know of only one firm, and some know of both firms. Firms have constant and identical marginal costs, sell...
Provided by University of Calgary
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White Papers
Cooperative Diversity Routing in Wireless Networks
July 7, 2010, 12:00am PDT
In this paper, the authors explore physical layer cooperative communication in order to design network layer routing algorithms that are energy efficient. They assume each node in the network is...
Provided by University of Calgary
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White Papers
Board Monitoring And Access To Debt Financing
November 2, 2007, 12:00am PDT
Board monitoring should affect a firm's access to debt financing because it improves firm performance and the board is ultimately responsible for the firm's debt. In this paper, the authors show...
Provided by University of Calgary
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White Papers
A New Peer-to-Peer-Based Interoperable Spatial Sensor Web Architecture
June 10, 2008, 12:00am PDT
With the rapid advances in sensor network, and information and communication technologies, the vision of a World-Wide Sensor Web (WSW) is becoming a reality. However, there is a lack of a spatial...
Provided by University of Calgary
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Software
SkyHunter 1.1 (Mobile)
June 21, 2011, 12:00am PDT
Sky Hunter Exploration provides a valuable exploration tool to oil and gas companies worldwide. The Skydrocarbon app allows users to view airborne petroleum surveys that map microseep data to the...
Provided by Agile Surface Engineering, University of Calgary
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White Papers
On the Complexity of Wireless Uplink Scheduling With Successive Interference Cancellation
July 13, 2011, 12:00am PDT
In this paper, the authors study the problem of uplink scheduling in wireless networks with Successive Interference Cancellation (SIC). With SIC, concurrent transmissions, if properly scheduled,...
Provided by University of Calgary
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White Papers
The Effect Of Incentive Structure On Heuristic Decision Making: The Proportion Heuristic
June 11, 2007, 12:00am PDT
When making judgments, individuals often utilize heuristics to interpret information. The paper reports on a series of experiments designed to test the ways in which incentive mechanisms influence...
Provided by University of Calgary
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White Papers
Characterization of CDMA2000 Cellular Data Network Traffic
January 1, 2011, 12:00am PST
This paper describes the analysis of low-level measurements from a CDMA2000 1x cellular data network. The network traces record detailed information about wireless Internet packet data call...
Provided by University of Calgary
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White Papers
Towards Stadium-Scale Wireless Media Streaming
January 1, 2011, 12:00am PST
This paper proposes a scalable architecture for multimedia streaming in wireless LANs. Current IEEE 802.11 WLANs can support tens of media streaming users. The authors propose a hierarchical...
Provided by University of Calgary
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White Papers
On Effective Capacity in Time-Varying Wireless Networks
January 1, 2011, 12:00am PST
In some networks, the physical transmission capacity can vary unpredictably with time. This stochastic variation may degrade system performance, reducing the effective capacity of the network....
Provided by University of Calgary
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White Papers
A Station-Based Adaptation Algorithm to Improve Robustness of IEEE 802.11
January 1, 2011, 12:00am PST
This paper studies a Bad Apple phenomenon caused by Head-of-Line blocking in IEEE 802.11 networks. This problem can adversely affect the performance of wireless multimedia streaming. The authors...
Provided by University of Calgary
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White Papers
An Analytical Model for Wireless Networks With Stochastic Capacity
July 17, 2007, 12:00am PDT
In wireless networks, the system capacity can vary unpredictably with time, due to mobility of users and dynamic channel assignment protocols. This variation in capacity with time, known as...
Provided by University of Calgary
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White Papers
Comparing Wired-Side and Wireless-Side WLAN Monitoring Techniques: A Case Study
July 17, 2007, 12:00am PDT
Wireless Local Area Networks (WLANs) have become omnipresent: WLANs are available at airports, coffee shops, university campuses, corporate environments, and homes. This surge in the popularity of...
Provided by University of Calgary
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White Papers
Dynamic File-Selection Policies for Bundling in BitTorrent-Like Systems
April 23, 2010, 12:00am PDT
BitTorrent-like swarming technologies are very effective for popular content, but less so for the 'Long tail' of files with disparate popularities, which do not have sufficiently many peers to...
Provided by University of Calgary
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White Papers
A Geometric Framework for Investigating the Multiple Unicast Network Coding Conjecture
March 9, 2012, 12:00am PST
The multiple unicast network coding conjecture states that for multiple unicast sessions in an undirected network, network coding is equivalent to routing. Simple and intuitive as it appears, the...
Provided by University of Calgary
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White Papers
Bounding the Power of Combination Network Coding in Undirected Networks
April 16, 2011, 12:00am PDT
The authors refer to network coding schemes in which information flows propagate along a combination network topology as Combination Network Coding (CNC). CNC and its variations are the first...
Provided by University of Calgary
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White Papers
Buddy Routing: A Routing Paradigm for NanoNets Based on Physical Layer Network Coding
March 10, 2012, 12:00am PST
NanoNets are networks of nanomachines at extremely small dimensions, on the order of nanometers or micrometers. Recent advances in physics and engineering have made basic computing and...
Provided by University of Calgary
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White Papers
Multi-Hop Wireless Sensor Networks
August 26, 2010, 12:00am PDT
Beamforming is a signal processing technique which is aimed at focusing the transmission energy in the desired direction through the use of antenna arrays and phase alignment. In this paper, the...
Provided by University of Calgary
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White Papers
Enhancing Redundant Network Traffic Elimination
December 24, 2010, 12:00am PST
Protocol-independent Redundant Traffic Elimination (RTE) is a method to detect and remove redundant chunks of data from network-layer packets by using caching at both ends of a network link or...
Provided by University of Calgary
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White Papers
On the Performance of Redundant Traffic Elimination in WLANs
January 20, 2012, 12:00am PST
Redundant Traffic Elimination (RTE) detects and removes repeated chunks of data across network flows, protocols, and applications, with the purpose of reducing bandwidth usage. In this paper, the...
Provided by University of Calgary
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White Papers
Using Torrent Inflation to Efficiently Serve the Long Tail in Peer-Assisted Content Delivery Systems
March 1, 2010, 12:00am PST
A peer-assisted content delivery system uses the upload bandwidth of its clients to assist in delivery of popular content. In peer-assisted systems using a BitTorrent-like protocol, a content...
Provided by University of Calgary
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White Papers
Information Technology and Process Performance: An Empirical Investigation of the Interaction Between IT and Non-IT Resources
July 18, 2008, 12:00am PDT
Drawing on the resource-based view, the authors propose a configurational perspective of how IT assets and capabilities affect firm performance. Their premise is that IT assets and IT managerial...
Provided by University of Calgary
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White Papers
Dynamic Swarm Management for Improved BitTorrent Performance
April 1, 2009, 12:00am PDT
BitTorrent is a very scalable file sharing protocol that utilizes the upload bandwidth of peers to offload the original content source. With BitTorrent, each file is split into many small pieces,...
Provided by University of Calgary
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White Papers
Leveraging Organizational Etiquette to Improve Internet Security
May 12, 2010, 12:00am PDT
As more and more organizations rely on the Internet for their daily operation, Internet security becomes increasingly critical. Unfortunately, the vast resources available on the Internet are...
Provided by University of Calgary
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White Papers
Peer-Assisted On-Demand Video Streaming With Selfish Peers
February 25, 2009, 12:00am PST
Systems delivering stored video content using a peer-assisted approach are able to serve large numbers of concurrent requests by utilizing upload bandwidth from their clients to assist in...
Provided by University of Calgary
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White Papers
Capacity Bounds for Energy Efficient Data Streaming in Homogeneous Wireless Ad Hoc Networks
April 25, 2011, 12:00am PDT
According to the Gaussian channel model, the throughput of a wireless link (u, v) is B log (1+S/N) bps, where B is the channel bandwidth and S/N is the signal to noise ratio. Wireless links which...
Provided by University of Calgary
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White Papers
Energy Efficient Online Routing in Wireless Ad Hoc Networks
April 25, 2011, 12:00am PDT
In this paper, the authors study the minimum total energy and maximum network lifetime routing problem in wireless ad hoc networks. They develop competitive online schemes for an infinite sequence...
Provided by University of Calgary
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White Papers
Novel Algorithms for the Network Lifetime Problem in Wireless Settings
August 24, 2010, 12:00am PDT
One of the major concerns in wireless ad-hoc networks design is energy efficiency. Wireless devices are typically equipped with a limited energy supply sufficient only for a limited amount of time...
Provided by University of Calgary
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White Papers
Improved Multi-Criteria Spanners for Ad-Hoc Networks Under Energy and Distance Metrics
December 20, 2009, 12:00am PST
This paper studies the problem of topology control in random wireless ad-hoc networks through power assignment for n nodes uniformly distributed in a unit square. In particular, the authors are...
Provided by University of Calgary
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White Papers
On the Optimality of Non-Uniform Clustering in Wireless Sensor Networks
August 6, 2010, 12:00am PDT
In wireless sensor networks, cluster-based data gathering has been pursued as a means to achieve network scalability as well as energy efficiency. By dividing a network into clusters, data...
Provided by University of Calgary
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White Papers
Power-Aware Recovery for Geographic Routing
December 19, 2008, 12:00am PST
Maintaining low power consumption is critical in wireless ad hoc and sensor networks. With packet transmissions and retransmissions consuming much of the energy resources in wireless networks, it...
Provided by University of Calgary
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White Papers
Service Differentiation in Multi-Rate HSDPA Systems
June 12, 2009, 12:00am PDT
In multi-rate cellular transmission systems, users with different Quality of Service (QoS) requirements share the same wireless channel. In this paper, the authors investigate the problem of...
Provided by University of Calgary
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White Papers
Scheduling Issues in Multi-Channel Wireless Networks
June 13, 2009, 12:00am PDT
Scheduling decisions can have a pronounced impact on the performance of multi-radio wireless systems. In this paper, the authors study the effects of dispatch policies and queue scheduling...
Provided by University of Calgary
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White Papers
Media Caching Support for Mobile Transit Clients
August 3, 2009, 12:00am PDT
In this paper, the authors consider the design of caching infrastructure to enhance the client-perceived performance of mobile wireless clients retrieving multimedia objects from the Internet....
Provided by University of Calgary
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White Papers
Providing Fairness Between TCP NewReno and TCP Vegas With RD Network Services
February 11, 2010, 12:00am PST
While Transmission Control Protocol (TCP) variants with delay-based congestion control (e.g., TCP Vegas) provide low queueing delay and low packet loss, the key problem with their deployment on...
Provided by University of Calgary
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White Papers
Distributed Routing for Vehicular Ad Hoc Networks: Throughput-Delay Tradeoff
April 16, 2010, 12:00am PDT
In this paper, the authors address the problem of low-latency routing in a vehicular highway network. To cover long highways while minimizing the number of required roadside access points, they...
Provided by University of Calgary
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White Papers
Cluster-Based Correlated Data Gathering in Wireless Sensor Networks
June 8, 2010, 12:00am PDT
The authors consider the problem of optimal cluster-based data gathering in Wireless Sensor Networks (WSNs) when nearby readings is spatially correlated. Due to the dense nature of WSNs, data...
Provided by University of Calgary
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White Papers
On Applicability of Random Graphs for Modeling Random Key Predistribution for Wireless Sensor Networks
July 14, 2010, 12:00am PDT
The authors study the applicability of random graph theory in modeling secure connectivity of wireless sensor networks. Specifically, their work focuses on the highly influential random key...
Provided by University of Calgary
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White Papers
Physics-Based Modeling of Skier Mobility and Avalanche Rescue in Mountainous Terrain
July 21, 2010, 12:00am PDT
Mobility models play an important role in the evaluation of wireless ad hoc networks. However, most existing mobility models are limited to 1D or 2D user movement. In this paper, the authors...
Provided by University of Calgary
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White Papers
Physical Layer Network Coding With Signal Alignment for MIMO Wireless Networks
August 26, 2011, 12:00am PDT
The authors propose Signal Alignment (SA), a new wireless communication technique that enables Physical layer Network Coding (PNC) in Multi-Input Multi-Output (MIMO) wireless networks. Through...
Provided by University of Calgary
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White Papers
Network Information Flow in Network of Queues
March 25, 2008, 12:00am PDT
Two classic categories of models exist for computer networks: network information flow and network of queues. The network information flow model appropriately captures the multi-hop flow routing...
Provided by University of Calgary
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White Papers
Optimal Layered Multicast With Network Coding: Mathematical Model and Empirical Studies
January 1, 2011, 12:00am PST
Multicast is an efficient mechanism in communication networks for data delivery from a source to multiple receivers. As a canonical example, media streaming applications that recently proliferated...
Provided by University of Calgary
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White Papers
Optimal Multicast in Multi-Channel Multi-Radio Wireless Networks
June 15, 2009, 12:00am PDT
Recent advances in wireless technology have made it increasingly feasible to equip wireless nodes with multiple radios, thereby allowing each radio to exploit channel diversity in the form of...
Provided by University of Calgary
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White Papers
A Prior-Free Revenue Maximizing Auction for Secondary Spectrum Access
July 30, 2010, 12:00am PDT
Dynamic spectrum allocation has proven promising for mitigating the spectrum scarcity problem. In this model, primary users lease chunks of under-utilized spectrum to secondary users, on a...
Provided by University of Calgary
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White Papers
Optimized Periodic Broadcast of Non-Linear Media
January 29, 2008, 12:00am PST
Conventional video consists of a single sequence of video frames. During a client's playback period, frames are viewed sequentially from some specified starting point. The fixed frame ordering of...
Provided by University of Calgary
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White Papers
Enforcing Minimum-Cost Multicast Routing Against Selfish Information Flows
October 2, 2008, 12:00am PDT
The authors study multicast in a non-cooperative environment where information flows selfishly route themselves through the cheapest paths available. The main challenge is to enforce such selfish...
Provided by University of Calgary
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White Papers
An Ontology Based Context Modelling Approach for Mobile Touring and Navigation System
July 2, 2010, 12:00am PDT
With the emergence of wireless communication, computer networks, and on-board positioning sensors, mobile computing has received vast attention lately. In this paper, a mobile tourism guiding...
Provided by University of Calgary
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White Papers
Assessing the Completeness of Wireless-Side Tracing Mechanisms
July 10, 2007, 12:00am PDT
Analyzing traces of wireless network activity has many pragmatic purposes, from capacity planning to network design. Unfortunately, capturing complete traces of wireless traffic is difficult, and...
Provided by University of Calgary
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White Papers
Comparing Wired-Side and Wireless-Side WLAN Monitoring Techniques: A Case Study
July 17, 2007, 12:00am PDT
Wireless Local Area Networks (WLANs) have become omnipresent: WLANs are available at airports, coffee shops, university campuses, corporate environments, and homes. This surge in the popularity of...
Provided by University of Calgary
-
White Papers
An Analytical Model for Wireless Networks With Stochastic Capacity
July 17, 2007, 12:00am PDT
In wireless networks, the system capacity can vary unpredictably with time, due to mobility of users and dynamic channel assignment protocols. This variation in capacity with time, known as...
Provided by University of Calgary
-
White Papers
A Station-Based Adaptation Algorithm to Improve Robustness of IEEE 802.11
January 1, 2011, 12:00am PST
This paper studies a Bad Apple phenomenon caused by Head-of-Line blocking in IEEE 802.11 networks. This problem can adversely affect the performance of wireless multimedia streaming. The authors...
Provided by University of Calgary
-
White Papers
On Effective Capacity in Time-Varying Wireless Networks
January 1, 2011, 12:00am PST
In some networks, the physical transmission capacity can vary unpredictably with time. This stochastic variation may degrade system performance, reducing the effective capacity of the network....
Provided by University of Calgary
-
White Papers
Towards Stadium-Scale Wireless Media Streaming
January 1, 2011, 12:00am PST
This paper proposes a scalable architecture for multimedia streaming in wireless LANs. Current IEEE 802.11 WLANs can support tens of media streaming users. The authors propose a hierarchical...
Provided by University of Calgary
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