Broadband Technologies on Residential Acces

The diffusion of broadband technologies is a hot topic for developed and many developing countries. Although the provision of service has many similar aspects, the overall and specific penetration of broadband technologies varies significantly in these countries. This study aims to examine the place of users' perceptions in the broadband issue by studying the development of the selected technologies and national policies in the light of the general information technology diffusion aspects.Diffusion of Technology, Broadband Technologies, Development of National Policies and Pricing Issues

Performance study of voice over frame relay : a thesis presented in partial fulfilment of the requirements for the degree of Master of Engineering in Information Engineering, Massey University, Albany, New Zealand

Frame Relay (FR) represents an important paradigm shift in modern telecommunication. This technology is beginning to evolve from data only application to broad spectrum of multimedia users and potential to provide end users with cost effective transport of voice traffic for intra office communication. In this project the recent development in voice communication over Frame relay is investigated. Simulations were carried out using OPNET, a powerful simulation software. Following the simulation model, a practical design of the LAN-to-LAN connectivity experiment was also done in the Net Lab. From the results of the simulation, Performance measures such as delay, jitter, and throughput are reported. It is evident from the results that real-time voice or video across a frame relay network can provide acceptable performance

Automatic database acquisition software for ISDN PC cards and analogue boards

This paper describes an application for automatic speechdatabases acquisition (ADA) developed by the authors in the framework of the EC Telematics Project SpeechDat II. The software is able to work with standard inexpensive PC cards for ISDN lines, as well as Dialogic Boards for analogue telephone lines. Both program versions share a common file format and configuration. Other important characteristics of the recording software are its simple set-up, a fast and flexible configuration of the recording session, the real-time monitoring of calls and disk space, and its proven robustness.Peer ReviewedPostprint (published version

Present and future pharmacotherapeutic agents in heart failure: an evolving paradigm

Many conditions culminate in heart failure (HF), a multi-organ systemic syndrome with an intrinsically poor prognosis. Pharmacotherapeutic agents that correct neurohormonal dysregulation and haemodynamic instability have occupied the forefront of developments within the treatment of HF in the past. Indeed, multiple trials aimed to validate these agents in the 1980s and early 1990s, resulting in a large and robust evidence-base supporting their use clinically. An established treatment paradigm now exists for the treatment of HF with reduced ejection fraction (HFrEF), but there have been very few notable developments in recent years. HF remains a significant health concern with an increasing incidence as the population ages. We may indeed be entering the surgical era for HF treatment, but these therapies remain expensive and inaccessible to many. Newer pharmacotherapeutic agents are slowly emerging, many targeting alternative therapeutic pathways, but with mixed results. Metabolic modulation and manipulation of the nitrate/nitrite/nitric oxide pathway have shown promise and could provide the answers to fill the therapeutic gap between medical interventions and surgery, but further definitive trials are warranted. We review the significant evidence base behind the current medical treatments for HFrEF, the physiology of metabolic impairment in HF, and discuss two promising novel agents, perhexiline and nitrite

A Practical implementation of high-speed communication using digital subscriber line technology

This thesis creates a plan for the practical implementation of high-speed communication for residences and businesses. By implementing low-cost, high-speed communication on a global scale, tremendous benefits can occur in areas such as Internet communication, interactive multimedia, telecommuting, and distance learning. Despite several successful trials of various high-speed communication technologies, many barriers remain before deployment can occur to the general public. This thesis proposes a plan to bridge the gap between theoretical test studies and global implementation. This thesis evaluates three communication systems as potential solutions for high-speed communication and selects one system as the solution. The three candidate systems are Digital Subscriber Line technologies (collectively referred to as xDSL), Integrated Services Digital Network (ISDN), and cable modem. The chosen technology solution, xDSL, allows twisted-pair copper wire (i.e. telephone lines) to be used for high-speed communication. The choice of xDSL as the technology solution is based on many factors, all of which correspond to practicality. The intent of this thesis is not the promotion of xDSL; rather, the primary objective is to create a plan to quickly and globally implement a low-cost, high-speed communication infrastructure for residences and businesses

Affordable Dial-up PPP Internet Connection for School Classroom Local Area Networks

A software package is presented that provides a simple and low cost solution for schools to connect their classroom Local Area Networks (LAN) to Internet and to use Internet services. The main component of the package is NOS4S (NOS for Schools), a DOS program based on JNOS with some substantial extensions necessary for the intended use. Besides acting as an on-demand TCP/IP router over dial-up Public Switched Telephone Network (PSTN) or ISDN lines, the program also serves as a local e-mail (on-demand SMTP / POP3), FTP and WWW server. Although relatively low cost commercial routers for connecting an LAN to Internet can be found on the market, it is generally difficult for schools to afford them due to their limited financial resources. In contrast, the NOS4S solution is essentially free. On the one hand, NOS4S is publicly available and free. On the other hand, because the classroom computers must be periodically replaced with newer ones to be able to run current versions of MS Windows, some older and abandoned computer suitable to run NOS4S can usually be found in a school

Development of an automated unit testing tool for java program.

Software testing relates to the process of executing a program or system with the intent of finding errors. Covering as much as 25 to 35 percent of the development costs and resources, software testing is an integral part of the software development lifecycle. Pengujian softwer melibatkan proses melarikan sesuatu program atau sistem dengan tujuan untuk mengesan kesalahan. Dengan kos pembangunan dan sumber meliputi 25 hingga 30 peratus, pengujian adalah antara bahagian utama dalam kitar hayat pembangunan softwer

Organizing information on the next generation web - Design and implementation of a new bookmark structure

The next-generation Web will increase the need for a highly organized and ever evolving method to store references to Web objects. These requirements could be realized by the development of a new bookmark structure. This paper endeavors to identify the key requirements of such a bookmark, specifically in relation to Web documents, and sets out a suggested design through which these needs may be accomplished. A prototype developed offers such features as the sharing of bookmarks between users and groups of users. Bookmarks for Web documents in this prototype allow more specific information to be stored such as: URL, the document type, the document title, keywords, a summary, user annotations, date added, date last visited and date last modified. Individuals may access the service from anywhere on the Internet, as long as they have a Java-enabled Web browser

Working Paper 01-02 - Production and diffusion of ICT in

Information and communication technology (ICT) has become a significant economic activity in most industrialized countries as well as an important engine of innovation and changes in the rest of the economy. It has been recognized as one of the key factors boosting productivity growth and hence business sector competitiveness. Various initiatives have been recently adopted at regional, national and European levels in order to meet quickly the new challenges of ICT use and diffusion in Europe. A growing number of indicators are now available in order to assess the position of each country or region in terms of ICT development and to guide policy decisions in that field. The aim of this report is to provide a clear and succinct view of the relative development of ICT in Belgium by analyzing both the production and the diffusion of ICT in our economy 1 and to highlight the main weaknesses and strengths of the Belgian economy in that area. Even if the sector has been recently characterised by stock markets ups and downs and numerous bankruptcies, production of ICT goods and services has contributed significantly during the nineties to the growth of economic activity and employment in some industrialised countries as for instance in Anglo-saxon and Scandinavian countries. Has Belgian economic activity benefited from the boom in the ICT sector to the same extent as other industrialised countries? What kind of development can be expected in the future? These are the main questions addressed in the part of the report devoted to the analysis of the Belgian ICT production sector.

Teleteaching over Low-Bandwidth Network Channels

Teleteaching has become an important application of the Internet and the MBone. Unfortunately the costs for the hardware, necessary to participate in remote lectures, are still prohibitively high and the degree of distributiveness of the implemented scenarios is very low. In the Interactive Home Learning project we plan to provide methods to participate in a Teleteaching lecture live from a PC at horne via a low-bandwidth connection (e.g. ISDN). This paper summarises technical aspects of this learning scenario and presents our approach, the fully Java-based Reflection and Scaling Tool jrst, which meets the requirements of an application layer multicast routing demon with a highly restrictive broadcasting policy and a dynamic tunnelling mechanism