12 Resources for

propagation

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Spatial-Temporal Modeling of Malware Propagation in Networks: Network security is an important task of network management. One threat to network security is malware malicious software propagation. One type of malware is called topological scanning that spreads based on topology information. The focus of this paper is on modeling the spread of topological malwares, which is important for...; Tags: Network, Propagation, Network Security, Malware, Spyware, Adware & Malware, Cyberthreats, Viruses And Worms, Security, Networking; White papers
Metamaterial: the unnatural composite is transforming wireless technology: I get excited when I read about how scientists are able to create experimental conditions that do not occur normally in nature. Recently I was digesting an article on the PhysicsWorld website about how physicists have developed a method using a new class of materials called metamaterial to bring light...; Tags: Propagation, Wireless Technology, MIMO, Technology, EM, RF, Wi-Fi, Wireless, Michael Kassner; Blog posts 2008-02-12
Wi-Fi 101: Multipath environments and how they affect Wi-Fi propagation: Ever wonder why moving your computer or changing the direction of your Wi-Fi antenna can make such a difference in signal strength? In this Wi-Fi 101 lesson, I explain how RF signals-especially Wi-Fi ones-react to real world conditions. RF terminology Before I jump into a discussion on multipath...; Tags: Signal, Environment, Propagation, WLAN, Multipath, Anomaly, RF, Propagation Anomaly, Wireless LANs, LANs, Wi-Fi, Wireless, Networking, Michael Kassner; Blog posts 2007-10-18
User Identity Propagation in Web Service Implementation: Implementation of Web services requires multiple levels of security, including communications security, secure access to the Web service endpoint, and identity propagation between service consumer and implementation. In this paper, one focuses on user identity propagation. One also learns about the role of identity propagation in the overall Web services...; Tags: Web, Propagation, Web Service, User Identity, Identity Propagation, Channel Management, Web Services, Security, Marketing, Enterprise Software, Software; White papers 2006-11-14
Collaboration and Multimedia Authoring on Mobile Devices: This paper introduces adaptation-aware editing and progressive update propagation, two novel mechanisms that enable authoring multimedia content and collaborative work on mobile devices. Adaptation-aware editing enables editing content that was adapted to reduce download time to the mobile device. Progressive update propagation reduces the time for propagating content generated at...; Tags: Multimedia, Collaboration, Mobile, Propagation, Mobile Device, Update Propagation, Advertising & Promotion, Marketing; White papers 2007-01-01

Complete Convergence of Message Passing Algorithms for Some Satisfiability Problems: This paper makes a modest step towards providing rigorous analysis that proves the effectiveness of message passing algorithms for random 3SAT. This paper analyzes the performance of Warning Propagation, a popular message passing algorithm that is simpler than survey propagation. This paper shows that for 3CNF formulas generated under the...; Tags: Message, Algorithm, Propagation, Convergence, Engineering, VOIP, Telecommunications, Networking; White papers 2006-04-01
A Study of Relevance Propagation for Web Search: Different from traditional information retrieval, both content and structure are critical to the success of Web information retrieval. In recent years, many relevance propagation techniques have been proposed to propagate content information between web pages through web structure to improve the performance of web search. This paper proposes a generic...; Tags: Web, Propagation, Internet Search, Association For Computing Machinery, Information Retrieval, Channel Management, Marketing; White papers 2005-08-19
A Study of Bluetooth Propagation Using Accurate Indoor Location Mapping: The ubiquitous computing community has widely researched the use of 802.11 for the purpose of location inference. Meanwhile, Bluetooth is increasingly widely deployed due to its low power consumption and cost. This paper describes a study of Bluetooth radio propagation using an accurate indoor location system to conduct fine-grained signal...; Tags: Propagation, Ubiquitous Computing, Springer Science+Business Media, Ubiquitous Computing Community, Bluetooth, Wi-Fi, Wireless; White papers 2005-07-19
Biological Models of Security for Virus Propagation in Computer Networks: This paper discusses the similarity between propagation of pathogens viruses and worms on computer networks with proliferation of pathogens in cellular organisms organisms with genetic material contained within a membrane encased nucleus. It introduces several biological mechanisms that are used in these organisms to protect against such pathogens and presents...; Tags: Computer Network, Network, Propagation, Albany, Virus, Computer, Productivity, Cyberthreats, Networking, Security, Viruses And Worms; White papers 2005-04-02
HP to launch 'virus throttling' software: Stay on top of the latest tech news with our free IT News Digest newsletter, delivered each weekday. Automatically sign up today!By ...; Tags: Cyberthreats, Viruses and worms, SECURITY, Tools & Techniques, virus, Hewlett-Packard Co., software; Technical articles 2004-12-01
Build a solid business case for your VoIP project: A business case for investing in a VoIP implementation requires evaluation of the associated ROI. VoIP offers many potential benefits, including reduced costs, new features, and converged networks. This sample chapter, taken from Cisco Press' Taking Charge of your VoIP Project, explains how to build a business case for VoIP....; Tags: accounting, advertisement, aggregation, benefit, BGP, business case, converged network, integration, network, propagation, QoS, ROI, VoIP, VoIP Project; Download resources 2005-08-01
Build effective BGP policies with Cisco IOS: The Border Gateway Protocol BGP is system routing protocol used to exchange routing information for the Internet and is the protocol Internet service providers ISP use to exchange customer and ISP routes. The BGP protocol provides a list of attributes through which you can set policies. Cisco IOS software expands...; Tags: accounting, advertisement, aggregation, BGP, Cisco IOS, Cisco IOS Software, Cisco Systems Inc., integration, Internet, Internet service, Internet Service Provider, propagation, QoS, routing protocol, service provider, software, technique, tool; Download resources 2005-07-21

Additional Resources

Congestion Propagation Among Routers in the Internet: In recent years, various non-linear phenomena of the Internet have been discovered. For instance, it is reported that congestion of a router propagates to neighboring routers like a wave. Several researches on congestion propagation among routers have been performed. However, in these researches, cause of congestion propagation and condition that...; Tags: Internet, Router, Congestion Propagation, Routers & Switches, Network Technology, Networking; White papers 2007-11-16
Propagation Loss Models Characterization for GSM 900MHz at Kuala Lumpur and Putrajaya: Propagation loss modelling of cellular mobile system is important for coverage design and prediction. Propagation loss models are usually used to predict the received signal strength at a certain distance from the base station. For site planning, the transmission loss and signal coverage can be predicted by a set of...; Tags: Kuala Lumpur, Mobile, Mobile System, GSM, Propagation Loss, Advertising & Promotion, Cellular Phones, Marketing, Consumer Electronics, Personal Technology; White papers 2005-05-26
Performance of Space-Frequency Coded Broadband OFDM Under Real-World Propagation Conditions: This paper studies the impact of the propagation environment on the performance of space-frequency coded broadband OFDM systems. In particular, the paper derives the error-rate performance of space-frequency codes in the presence of transmit and receive correlation, and quantifies the maximum achievable diversity order and coding gain as a function...; Tags: ETH Zurich, Performance, Broadband, Performance Management, OFDM, Broadband Internet, Network Technology, Telecommunications, Human Resources, Workforce Management, Wireless, Networking; White papers
True Parallel Processing in Artificial Neural Networks: The area of artificial neural networks, which dates back to the early twentieth century, could only offer positive contributions to technology after the back-propagation algorithm was proposed in 1986. In this note an alternative algorithm to the gradient descent used in back-propagation is proposed. This algorithm is based on the...; Tags: Algorithm, Network, Neural Network, Parallel Processing, Emerald, Engineering; White papers 2007-10-22
Impact of the Propagation Environment on the Performance of Space-Frequency Coded MIMO-OFDM: Previous work on space-frequency coded MIMOOFDM has been restricted to idealistic propagation conditions. In this paper, using a broadband MIMO channel model taking into account Ricean K-factor, transmit and receive angle spread, and antenna spacing, we study the impact of the propagation environment on the performance of space-frequency coded MIMO-OFDM.; Tags: ETH Zurich, Performance, Environment, MIMO-OFDM, Performance Management, Human Resources, Workforce Management; White papers
Real-World Environment Models for Mobile Network Evaluation: Simulation environments are an important tool for the evaluation of new concepts in networking. The study of mobile ad hoc networks depends on understanding protocols from simulations, before these protocols are implemented in a real-world setting. To produce a real-world environment within which an ad hoc network can be formed...; Tags: Mobile Network, Mobile, Network, University Of California, Networking; White papers
Observations and Models of Time-Varying Channel Gain in Crowded Areas: Testbeds are projected to be the next generation of mechanisms for protocol verification and performance validation of wireless networks. One important objective of these testbeds is to depict the propagation mechanism accurately. This paper presents measurements and models of propagation between stationary transmitters and receivers in a dynamic environment. These...; Tags: Environment, Performance Management, Human Resources, Workforce Management; White papers 2005-12-11
Analysis of Belief Propagation for Non-Linear Problems: The Example of CDMA (or: How to Prove Tanaka's Formula): This paper considers the CDMA (Code-Division Multiple-Access) multi-user detection problem for binary signals and additive white gaussian noise. The paper proposes a spreading sequences scheme based on random sparse signatures, and a detection algorithm based on Belief Propagation BP with linear time complexity. In the new scheme, each user conveys...; Tags: CDMA, Analysis, University Of California, Cellular Phones, Consumer Electronics, Personal Technology; White papers 2006-02-07

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