| Title | Date Added | Company | |
|---|---|---|---|
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On Orthogonal Reduction to Hessenberg Form With Small Bandwidth | 2008-06-12 | Academy of Sciences of the Czech Republic |
| Numerous algorithms in numerical linear algebra are based on the reduction of a given matrix A to a more convenient form. One of the most useful types of such reduction is the orthogonal reduction to (upper) Hessenberg form. This reduction can be computed by the Arnoldi algorithm. When A is Hermitian, the resulting upper Hessenberg matrix is tridiagonal, which is a significant computational advantage. This paper studies necessary and sufficient conditions on A so that the orthogonal Hessenberg reduction yields a Hessenberg matrix with small bandwidth. This includes the orthogonal reduction to tridiagonal form as a special case. Orthogonality here is meant with respect to some given but unspecified inner product.
Tags: Software Engineering |
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Key Application - Shared Outbound (Point-to-Multipoint): Using the Vocality Multiplexer/Router Over Point-to-Multipoint Networks Efficiently Using Large Outbound/Small Inbound Architecture | 2008-06-12 | Vocality International |
| This white paper provides an overview of a system configuration achievable through a combination of hardware from Vocality and traditional SCPC satellite modems. Satellite users such as welfare deployments or Satellite News Gathering truck operators will see immediate benefit from the flexible nature of the system design, allowing easy to configure voice, data and clean feed audio to be transmitted to or from remote to the central hub site - with a migration path which will allow MPEG 4 video to be transmitted over IP alongside the communications router services.
Tags: Switching, Satellite Communications |
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Network Security Checklist | 2008-06-10 | Cisco Systems |
| Now more than ever, you depend on your network for your most important business operations, such as communication, inventory, billing, sales, and trading with partners. Many small and medium-sized businesses do not have adequate network security. Here's how to make sure you do. View and complete this checklist to protect yourself against spammers, hackers, disasters, and other threats. It also includes tips that can help you develop and win support for an effective network security plan.
Tags: Best Practices, Network Administration, Network Security, Security Management, Security Tools |
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Coherent Optical Frequency Transfer Via 110-Km Urban Fiber Network | 2008-06-10 | University of Electro-Communications |
| Optical frequency at 1542 nm was coherently transferred over a 110-km optical fiber using an urban fiber network (JGN2) between Tsukuba and Kashiwa cities. The phase fluctuation induced by the fiber length fluctuation was actively reduced by stabilizing the fiber length using a fiber stretcher and an acousto-optic frequency shifter. Residual frequency instability of the transmitted light at the remote end was reduced down to 1.5?10-15 at an averaging time of 1 s.
Tags: Fibre |
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Sprint IPVoice Connect Fact Sheet | 2008-06-09 | Sprint |
| Read this paper to see how to use a single IP connection to enable voice and Internet for quality and reliable service with a suite of advanced phone features that will make your employees more productive with cost predictability for the small to medium-sized business.
Tags: Voice - Data Integration, TCP - IP, Telecom Services, Cost Control - Risk Mgmt. |
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Voice Architectures and Deployment Models | 2008-06-09 | Global Knowledge |
| As companies migrate from traditional telephony to Voice over IP (VoIP), there are more design decisions to make when choosing the most appropriate implementation type. The choices include variations of centralized or distributed architectures, as well as a choice of call control protocols. This Cisco training white paper explains some of the choices and their pros and cons.
Tags: Telephony Systems - PBX, Telecom Services, Strategic Planning |
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Farpoint Group report - 802.11n Access Points and POE: Key considerations | 2008-06-06 | siemens |
| In this 5 page report, you'll discover more about the key technical considerations when making the move to 802.11n. The report provides: * An overview of PoE * Information on verifying power performance * Proof that the solution works Tags: Mobile - Wireless Communications, Wi-Fi (802.11) |
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Does 802.11n deliver better wireless services for Enterprises? | 2008-06-06 | siemens |
| Watch our on demand 802.11n webinar to discover how HiPath Wireless 802.11n from Siemens Enterprise Communication has solved the traditional technology challenges associated with higher power access points and controllers.
Tags: Wi-Fi (802.11), Mobile - Wireless Communications |
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Practical Considerations for Deploying 802.11n | 2008-06-06 | siemens |
| Download this White Paper from Siemens Enterprise Communications to demystify the current confusion surrounding the new 802.11n WiFi standard. Find out more about the key issues when considering a move to 802.11n and how HiPath Wireless 802.11n can address them. Tags: Wi-Fi (802.11), Mobile - Wireless Communications |
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Converged Solutions white paper from Stratecast/Frost & Sullivan | 2008-06-06 | Sprint |
| In the communications industry, convergence refers to the integration of communication - voice, video, and data - onto a single (IP-based) network. From convergence, more advanced and efficient means of communication emerge.
This paper from Stratecast describes the attributes of a true customer-centric convergence solution. From these attributes, a framework to measure and compare communication service providers' (CSPs') convergence solutions is constructed. The paper concludes with an attribute review of Sprint's approach to true convergence. Tags: Voice - Data Integration, Telecom Services, Network Design, Unified Communications |
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