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Title Date Added Company

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

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

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

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

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.

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

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)

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

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

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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Title	Date Added	Company
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
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
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
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
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.
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
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)
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
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
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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