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- Introduction to Iris Recognition for Personal Identification
- Iris recognition illustrates work in computer vision, pattern recognition, and the man-machine interface. The purpose is real-time, high confidence recognition of a person's identity by mathematical analysis of the random patterns that are visible within the iris of an eye from some distance. Because the iris is a protected internal...
- Tags: Purpose, University Of Cambridge, Iris Recognition, Productivity, Strategy, Management
- White papers
- Experiences With Heterogeneous Wireless Networks, Unveiling the Challenges
- The integration of heterogeneous wireless networks is one of the most important features that are needed for the future deployment of new wireless technologies such as 4G mobile systems. However, the designers of these systems are also committed to using Internet Protocol IP as their core network infrastructure. Thus, support...
- Tags: University Of Cambridge, Network, Mobility, Wireless Network, Wi-Fi, Wireless, Networking
- White papers
- Modelling Incentives for Collaboration in Mobile Ad Hoc Networks
- This paper explores a model for the operation of an ad hoc mobile network. The model incorporates incentives for users to act as transit nodes on multi-hop paths and to be rewarded with their own ability to send traffic. The paper explores consequences of the model by means of uid-level...
- Tags: Incentive, University Of Cambridge, Collaboration, Mobile, Network, Sales Force Management, Networking, Sales
- White papers
- Mobile Ad-Hoc Intern-Domain Networking
- After nearly three decades of work on mobile ad-hoc networking it is starting to see a convergence of better radios and better understanding of performance needs for MANET routing schemes, delivering working networks. One part of the next stage of evolution of such systems will be to support the federation...
- Tags: University Of Cambridge, Mobile, BGP, Advertising & Promotion, Internet, Networking, Marketing
- White papers
- Measurement Approaches to Evaluate Performance Optimizations for Wide-Area Wireless Networks
- This paper presents measurement approaches to evaluate performance optimizations, employed at different layers of the protocol stack, to enhance application performance over Wide-Area Wireless Networks WWANs. Applications running over WWAN cellular environments web browsing are significantly affected by the vagaries of the cellular wireless links. Much of the prior research...
- Tags: Measurement, University Of Cambridge, Performance, Optimization, Environment, Performance Management, Human Resources, Workforce Management
- White papers
- Institute for Manufacturing Case Study: BOC Group
- The BOC Group has an international portfolio of companies grouped into three lines of business: Process Gas Solutions, Industrial and Special Products, and BOC Edwards. BOC's Industrial and Special Products division ISP supplies gases in cylinders to commercial and industrial customers in over 60 countries worldwide. In most cases, the...
- Tags: University Of Cambridge, Internet Service Provider, Manufacturing, BOC Group, Cylinder Asset Management, Internet Service Providers (ISPs), RFID, Internet, Wireless, Security, Biometrics
- Case studies
- Experiences With Multimedia Streaming Over 2.5G and 3G Networks
- As third generation technologies become more widely deployed, mobile data users increasingly experience ubiquitous global network access across a variety of heterogeneous 2.5 and 3G technologies. Such provision of higher bandwidth in mobile environments promises greater access to rich multimedia content delivered to handheld or mobile devices such as PDAs,...
- Tags: Multimedia, University Of Cambridge, Mobile, Network, 3G Network, 2.5G, Advertising & Promotion, Cellular Phones, Marketing, Consumer Electronics, Personal Technology
- White papers
- Exploiting Network Diversity in MARS - A Mobile Access Router System
- In this paper, a case is made for exploiting the inherent network diversity in wireless access available from different wireless and cellular networks, and of the operators that can be used to provide a sufficiently sustainable and reliable wireless communication link. Based on a real-world example of cellular networks that...
- Tags: University Of Cambridge, Microsoft Access, Mobile, Network, Cellular Network, Networking, Wi-Fi, Wireless
- White papers
- On Inter-Network Handover Performance Using Mobile IPv6
- This paper reports on the practical experiences of using the Mobile IPv6 protocol in an integrated LAN-WLAN-GPRS testbed. Through detailed analysis from packet traces of inter-network vertical handovers conducted over the testbed, the performance of transport protocols such as TCP during such handoffs is examined. The considerable differences in link-layer...
- Tags: University Of Cambridge, Performance, Mobile, TCP, Performance Management, Tcp/Ip, Networking, Human Resources, Workforce Management
- White papers
- Practical Experience With TCP Over GPRS
- This paper presents the results of a series of experiments used to characterize the performance of a GPRS General Packet Radio Service wireless data network, hence highlighting issues that software architects should consider when designing applications to run over this soon to be widely-deployed service. In summary, it shows that...
- Tags: University Of Cambridge, Network, GPRS, TCP, Tcp/Ip, Cellular Phones, Networking, Consumer Electronics, Personal Technology
- White papers
- Using Visual Tags to Bypass Bluetooth Device Discovery
- One factor that has limited the use of Bluetooth as a networking technology for publicly accessible mobile services is the way in which it handles Device Discovery. Establishing a Bluetooth connection between two devices that have not seen each other before is slow and, from a usability perspective, often awkward....
- Tags: University Of Cambridge, Bluetooth, Wi-Fi, Wireless
- White papers
- WWW Performance Over GPRS
- This paper presents investigative results of HTTP performance over GPRS General Packet Radio Service. Following on from an earlier study of GPRS, which uncovered a number of performance problems with TCP (e.g. sub-optimal start-up performance, excess queuing, spurious timeouts etc.), this paper discuss how and to what extent these limitations...
- Tags: University Of Cambridge, Performance, GPRS, WWW, Performance Management, Cellular Phones, Human Resources, Workforce Management, Consumer Electronics, Personal Technology
- White papers
- 3D Model Acquisition by Tracking 2D Wireframes
- This paper presents a semi-automatic wireframe acquisition system. The system uses real-time (25Hz) tracking of a user specified 2D wireframe and intermittent camera pose parameters to accumulate 3D position information. The 2D tracking framework enables the application of model-based constraints in an intuitive way which interacts naturally with the Kalman...
- Tags: 3D, Acquisition, University Of Cambridge, 2D, Mergers & Acquisitions, Corporate Law, Investment, Finance, Business Operations
- White papers
- Policy-Controlled Event Management for Distributed Intrusion Detection
- A powerful strategy in intrusion detection is the separation of surveillance mechanisms from a site's policy for processing observed events. The Bro intrusion detection system has been using the notion of policy-neutral events as the basic building blocks for the formulation of a site's security policy since its conception. A...
- Tags: University Of Cambridge, Event, Bro Intrusion Detection System, Intrusion Detection, Network Security, Security, Networking
- White papers 2008-01-01
- Top University Builds World-Leading Supercomputer
- University of Cambridge's existing supercomputer was struggling to keep up with the demands being placed on it. The needed to move on from so-called 'shared memory' proprietary machines into the world of 'Commodity clusters', having been at the forefront of cluster computing technologies for eight years before moving to Cambridge....
- Tags: University Of Cambridge, Nortel Networks Corp., Purchasing & Procurement, Leadership, Business Operations, Management
- Case studies 2007-07-25
- Honeycomb - Creating Intrusion Detection Signatures Using Honeypots
- This paper describes a system for automated generation of attack signatures for network intrusion detection systems. The system applies pattern-matching techniques and protocol conformance checks on multiple levels in the protocol hierarchy to network traffic captured a honeypot system. This paper presents results of running the system on an unprotected...
- Tags: Cable Modem, University Of Cambridge, Signature, Cable, Intrusion Detection, Modems, Broadband Internet, Security, Telecommunications, Personal Technology, Hardware, Components
- White papers 2008-01-01
- Architecture of a Network Monitor
- This paper describes a system for simultaneously monitoring multiple protocols. It performs full line-rate capture and implements on-line analysis and compression to record interesting data without loss of information. The researchers accept that the balance must be maintained in such a system between disk-bandwidth, CPU-capacity and data-reduction in order to...
- Tags: Monitor, University Of Cambridge, Researcher, Network, Monitoring
- White papers 2007-12-01
- Email Traffic: A Quantitative Snapshot
- With unsolicited email costing businesses millions in wasted employee resources and productivity, and acting as the carrier for a host of potential security woes, spam and blended email threats are among the biggest problems facing enterprises today. Not only have spam and viruses taken their toll on business networks, but...
- Tags: University Of Cambridge, E-mail, Phishing, Security, Online Communications, Spam And Phishing
- White papers 2007-08-02
- TCP Sending Rate Control at Tera Bits Per Second
- An analysis of the sending rate of TCP control over Terabit per second rate links illustrates how future optical network characteristics, such as higher bitrates, network congestion, and larger data loads, would affect performance. This paper has implemented a model to allow increased sending rate for TCP. It is shown...
- Tags: University Of Cambridge, Optical Network, TCP, Tcp/Ip, Networking, Fiber Optics, Telecommunications
- White papers 2007-05-31
- Failures in a Hybrid Content Blocking System
- Three main methods of content blocking are used on the Internet: blocking routes to particular IP addresses, blocking specific URLs in a proxy cache or firewall, and providing invalid data for DNS lookups. The mechanisms have different accuracy/cost trade-offs. This paper examines a hybrid, two-stage system that redirects traffic that...
- Tags: University Of Cambridge, Internet Service Providers (ISPs), Internet, Domain Names, Firewalls, Networking
- White papers 2007-01-01
