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- Oil-eating microbes produce green energy
- It is estimated that oil sands -- or bituminous sands -- represent two thirds of the world's oil reserves. Still, it's expensive and difficult to extract oil from these sands. Even with today's crude oil prices, the industry is still looking for cheaper ways to produce energy from the so-called...
- Tags: Oil, Carbon Dioxide, University Of Calgary, Hydrogen, Energy, Roland Piquepaille
- Blog posts 2007-12-14
- Queue Management Strategies to Improve TCP Fairness in IEEE 802.11 Wireless LANs
- Wireless Local Area Networks WLANs based on the IEEE 802.11 technology have become increasingly popular and ubiquitous. The 802.11 standard allows each station in a WLAN equal opportunity to access the wireless channel, which can result in unfair sharing of network bandwidth between upstream and downstream TCP flows at an...
- Tags: Strategy, IEEE 802.11, Network, University Of Calgary, WLAN, TCP, Wireless LANs, LANs, Wi-Fi, Tcp/Ip, Wireless, Networking
- White papers 2007-01-01
- Video to Go: The Effects of Mobility on Streaming Media in a CDMA2000 1xEV-DO Network
- This paper experimentally examines the performance of streaming media applications over a CDMA2000 1xEVDO network. The performance of streaming in a cellular network is tested across three different levels of mobility, two applications, and the two transport layer protocols, TCP and UDP. Findings of this study are that streaming applications...
- Tags: University Of Calgary, Mobility, Video, UDP, Streaming Media, Web Site Development, Web Technology, Tcp/Ip, Corporate Communications, Digital Media, Networking, Internet, Marketing, Consumer Electronics, Personal Technology
- White papers 2007-01-01
- An FPGA-Based Network Processor for IP Packet Compression
- This paper describes the design, implementation, and experimental evaluation of a reconfigurable network processor that can do on-the-fly content adaptation of IP packets for wired or wireless networks. In the demonstration application, FPGA technology is used in conjunction with traditional RISC micro-processors to perform IP packet compression in hard-ware, using...
- Tags: Processor, Network, University Of Calgary, IP, Evaluation, Hardware, FPGA, Networking, Network Technology
- White papers 2007-01-01
- Xerox Canada Makes the Grade at the University of Calgary
- University of Calgary's administrators came together and developed a concrete five-year expansion plan that would manage a student enrolment that is expected to increase from 28,000 to 35,000 students by 2010. To accommodate such growth, the University needed to attract additional faculty, and fund capital expansion efforts. Of late, the...
- Tags: Xerox Corp., University Of Calgary, Xerox Canada, Document Management, Content Management, Managerial Accounting, Groupware, Enterprise Software, Software, Finance
- Case studies 2006-11-01
- Observations on Round-Trip Times of TCP Connections
- Knowledge about properties of network traffic can be beneficial when studying network protocols. It enables realistic models of network traffic to be created and evaluations of current protocols to take place. This study examines trends in Round-Trip Times RTTs at a university Web server. Round-trip time is a particularly important...
- Tags: Network, Network Traffic, University Of Calgary, TCP, RTT, Tcp/Ip, Networking
- White papers 2006-07-28
- Teaching Spam and Spyware at the University of C@1g4ry
- The University of Calgary is attacking the problems of spam and spyware from the angle of education. "Spam and Spyware" is a computer science course offered at both the undergraduate and graduate level, that objectively examines the legal, ethical, and technical aspects of spam and spyware and their countermeasures. The...
- Tags: University Of Calgary, Spyware, Spyware, Adware & Malware, Cyberthreats, Viruses And Worms, Security
- White papers 2006-05-24
- On Channel Selection Strategies for Multi-Channel MAC Protocols in Wireless Ad Hoc Networks
- Multi-channel Medium Access Control MAC protocols have recently been proposed to improve the performance of the Transmission Control Protocol TCP in IEEE 802.11 wireless ad hoc networks. This paper uses ns-2 network simulations to study the impact of channel selection techniques on multi-channel MAC protocol performance, particularly for the Bi-directional...
- Tags: MAC, Network, University Of Calgary, Wireless, Tcp/Ip, Strategy, Networking, Management
- White papers 2006-04-11
- TCP NewReno: Slow-But-Steady or Impatient?
- This paper compares the throughputs of two different TCP NewReno variants, namely Slow-but-Steady and Impatient. The paper develops analytic throughput models of these variants as a function of round-trip time, loss event rate, and the burstiness of packet drops within a loss event. The models build upon prior work on...
- Tags: Throughput, University Of Calgary, TCP, Tcp/Ip, Networking
- White papers 2006-02-21
- Computers show how plants grow
- Computer scientists in Canada have worked with botanists in Switzerland to build a 3D computer model which simulates how plants grow and develop beautiful shapes. Their model was able to accurately show how plants achieve phyllotaxis, this regular arrangement of lateral organs around a central axis. According to the researchers,...
- Tags: computer, University of Calgary
- Blog posts 2006-01-25
- Spam Zombies From Outer Space
- How can better email worms be created? How can spyware claim more victims? How can better spam be sent? It turns out that these three questions are all related. This paper looks at the future threat posed by email worms, spyware, and spammers that use zombie machines in a new...
- Tags: E-mail Worm, University Of Calgary, E-mail, Spyware, Spyware, Adware & Malware, Cyberthreats, Viruses And Worms, Security, Online Communications
- White papers 2006-01-01
- Media Choices for the Preservation of Digital Documents
- On any given desk, stacks of diskettes and CDs compete for space with the piles of paper. Among paper records there is certainty about whether the information contained by the paper is intact because one immediately recognizes its integrity with a quick glance. In contrast, information on diskettes and CDs...
- Tags: Diskette, University Of Calgary, Artifact, Preservation
- White papers 2005-10-15
- Predicting Short-Transfer Latency From TCP Arcana: A Trace-Based Validation
- In some contexts it may be useful to predict the latency for short TCP transfers. For example, a Web server could automatically tailor its content depending on the network path to each client, or an "opportunistic networking" application could improve its scheduling of data transfers. Several techniques have been proposed...
- Tags: Latency, University Of Calgary, TCP, Tcp/Ip, Web Servers, Networking, Internet
- White papers 2005-08-10
- Nortel Networks SSL VPN Solution Breaks Down Network Barriers and Provides Anywhere, Anytime Access
- The University of Calgary has a reputation for offering the highest quality of education to its 30,000 full- and part-time students. The Faculty of Medicine decided to build a learning management system that would serve to capture and share knowledge, integrate a range of applications, and foster collaboration among students,...
- Tags: VPN, SSL VPN, Microsoft Access, Network, Nortel Networks Corp., University Of Calgary, Learning Management System
- Case studies
- Hierarchical Analysis of RealMedia Streaming Traffic on an IEEE 802.11b Wireless LAN
- The popularity of multimedia streaming on the Internet, combined with the growing deployment of wireless access networks, augurs the converging usage of these two technologies in the not-too-distant future. Experience with wireless multimedia streaming on today's networks can provide valuable insights into the design of future wireless multimedia networks and...
- Tags: Multimedia, IEEE 802.11, RealNetworks RealMedia, Network, University Of Calgary, Analysis, Wireless Access, Wi-Fi, Wireless LANs, Wireless
- White papers
- The Effects of Mobility on Wireless Media Streaming Performance
- This paper presents experimental measurements of MPEG-4 media streaming on an IEEE 802.11b WLAN. The paper focuses on delivering multimedia audio and video content from a streaming server on a wired network to mobile clients on a wireless LAN. Experiments are conducted both with and without client mobility, to characterize...
- Tags: Performance, Media, University Of Calgary, MPEG-4, Mobility, Advertising & Promotion, Digital Video, Digital Media, Wi-Fi, Wireless, Marketing, Personal Technology, Consumer Electronics
- White papers
- DartMail: Digital Information Transfer Through Physical Surrogates
- DartMail realizes the concept of transferring digital information with physical surrogates. In a lightweight manner, it allows users to easily associate information with augmented physical darts, transfer that information, then retrieve the information. RFID tags allow to easily tagging a physical item, where the tag can identify electronic information associated...
- Tags: University Of Calgary, Information, DartMail, RFID, Wireless, Security, Biometrics
- White papers
- Simulation Evaluation of Wireless Web Performance in an IEEE 802.11b Classroom Area Network
- This paper presents a simulation study of an IEEE 802.11b Wireless LAN WLAN used as a classroom area network. The simulation is conducted using OPNET Modeler 9.1. The first part of the paper discusses parameterization and validation of the simulation model, based on empirical measurements in a wireless classroom environment....
- Tags: IEEE 802.11, Network, University Of Calgary, WLAN, Wireless Web, Simulation, Wireless LANs, Wi-Fi, Wireless, LANs, Networking
- White papers
- MRMC: A Multi-Rate Multi-Channel MAC Protocol for Multi-Radio Wireless LANs
- Dynamic transmission rate selection is widely used in IEEE 802.11b Wireless LANs WLANs to combat adverse wireless channel conditions. However, overall system throughput suffers when stations with different transmission rates share the same physical channel. This paper describes and evaluates a multi-rate multi-channel Medium Access Control MAC protocol to solve...
- Tags: Station, MAC, University Of Calgary, Wireless LANs, Wi-Fi, Wireless
- White papers
- A Measurement Study of RealMedia Streaming Traffic
- With the growing popularity of real-time audio/video streaming applications on the Internet, it is important to study the traffic characteristics of such applications and to understand their implications on network performance. This paper presents a measurement study of RealMedia streaming traffic, where the focus is both on the application-layer view...
- Tags: RealNetworks RealMedia, Network, University Of Calgary, Observation, Digital Media, Consumer Electronics, Personal Technology
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"Collaboration: Transforming the Way Business Works", a new study from the Economist Intelligence Unit. Find this informative report along with free videos podcasts and more, availibe courtesy of Cisco.
