Study of Fuzzy Logic-based Controller for Diff-Serv Bandwidth Broking

Combining both voice and data on the same network infrastructure results in need for an advanced network which is to be simple and scalable.  This resulted in new approach for Ethernet where Differentiated Service (Diff-Serv) is introduced. This is taken into consideration as well as QoS as a way of providing class of service to end users. Therefore, optimizing available bandwidth efficacy is one of the goals of this work which is centered on investigating the impact of crucial factors on performance of implementing a fuzzy logic controller. These factors can be external or internal and will be manipulated by Fuzzy Logic controller that will work as bandwidth broker to give each user his optimal Code Point (CP). In this work, the CP will not only consider packet loss rate as external factor  to check the congestion, but it will also consider the internal factors which are a combination of both service-level agreement (SLA) and the type of application being used. This CP will be marked in the transmitted packets, and then the router will check that and will treat it as agreed between user and administrator

Modeling and Simulation of Quality of Service in VoIP Wireless LAN

This work presents computer modeling and simulation of the IEEE 802.11 standard to improve its QoS when different wireless stations are allowed for roaming. Request-to-Send and Clear-to-Send (RTS/CTS) frames are added as means to overcome the hidden node problem that could occur in wireless local area networks. The obtained results by simulation are presented and discussed including the ones for Quality of Services differentiation

Partial distance-learning training for information technology higher education trainers

Teachers must be able to adapt to a rapidly changing IT knowledge and technology. This requirement is further compounded by the need that this knowledge and technology be incorporated in the curriculum at the same rate. This paper presents a strategic approach for updating curriculum and technical know-how of information technology through training the IT trainers. This approach is expected to help modernize the IT training in the developing country by educating the youth who are at the receiving end of this training. In order to ensure the economic feasibility of this approach, teaching methods conducted were based on a combination of traditional methods and modern distance learning techniques.Education for the 21 st century - impact of ICT and Digital Resources ConferenceRed de Universidades con Carreras en Informática (RedUNCI

Partial distance-learning training for information technology higher education trainers

Teachers must be able to adapt to a rapidly changing IT knowledge and technology. This requirement is further compounded by the need that this knowledge and technology be incorporated in the curriculum at the same rate. This paper presents a strategic approach for updating curriculum and technical know-how of information technology through training the IT trainers. This approach is expected to help modernize the IT training in the developing country by educating the youth who are at the receiving end of this training. In order to ensure the economic feasibility of this approach, teaching methods conducted were based on a combination of traditional methods and modern distance learning techniques.Education for the 21 st century - impact of ICT and Digital Resources ConferenceRed de Universidades con Carreras en Informática (RedUNCI

Partial distance-learning training for information technology higher education trainers

Teachers must be able to adapt to a rapidly changing IT knowledge and technology. This requirement is further compounded by the need that this knowledge and technology be incorporated in the curriculum at the same rate. This paper presents a strategic approach for updating curriculum and technical know-how of information technology through training the IT trainers. This approach is expected to help modernize the IT training in the developing country by educating the youth who are at the receiving end of this training. In order to ensure the economic feasibility of this approach, teaching methods conducted were based on a combination of traditional methods and modern distance learning techniques.Education for the 21 st century - impact of ICT and Digital Resources ConferenceRed de Universidades con Carreras en Informática (RedUNCI

Arabic information retrieval: techniques, tools and challenges

The amount of Arabic electronic information is growing drastically on the web. Statistics shows that the number of Internet users in the Middle East has increased enormously since the year 2000 due to increase in ICT awareness and its importance within Arab countries. As a result this has raised the need to find effective methods and techniques for allocating and retrieving the Arabic-based content from the web. This paper presents major Information Retrieval (IR) tools and techniques and it highlights few challenges in this regard

Converged Networking: A Review of Concepts and Technologies

Converged networking is an emerging technology thrust that integrates voice, video, and data traffic on a single network. Converged networking encompasses several aspects, all of which are related to the aggregation of networking activity. Such aspects include, Payload convergence, Protocol convergence, Physical convergence, Device convergence, Application convergence, Technology convergence, etc. In recent years the Internet has developed into a global data network that is highly accepted as a multimedia information platform, which has the potential to develop into an alternative carrier network in the future. Several convergence scenarios have been recently proposed, ranging from integrating communication services and computer application into two separate networks, to building a seamless multimedia network, which converges the Central Office based network and the Internet in a single network, thereby enabling telecommunications operators and service provider's tremendous investment in existing network infrastructure to be fully utilized. This paper offers introduction and review of the networking technologies. The paper presents the existing multiple networks into two infrastructures: an ATM/Frame Relay (Ethernet)- based corporate network with integrated voice, video, and data traffic and an Internet-based network for secure intranet, extranet and remote access. This work is aimed at summarizing the internetworking basics and technologies which are essential for the emerging converged networking systems. The specific areas addressed here are networking basics, networking technologies, types of traffic, and convergence of computer and communication networks

Interface Layers Detection in Oil Field Tanks: A Critical Review

An emulsion layer is a mixture of two or more liquids in which one of them the dispersed phase, is present as droplets of microscopic size, distributed throughout the other, called continuous phase. The existence of such layer between oil and water is due to the crude properties, and contaminants such as asphaltenes and resins. A measurement system to determine the boundaries of this emulsion in a modern oil production field is necessary to extract the pure single phase liquids [1, 2, 3]. This would for instance reduce the usage of expensive two phase flow meters and avoid the installation of additional tank separators along the upstream oil pipeline. In addition, this would help collecting accurate daily oil production statistics from each oil station. One widely deployed solution consists to inject chemical substances to completely eliminate the emulsion layer and leave only a crisp oilwater interface which can then be detected relatively much more easier. However, this approach is costly, not environmental friendly, and leads to a significant increase of the retention time in the separator. This book chapter provides a survey on electronic-basedtechniques which are capable to measure the high and low boundaries of the emulsion layer in real-time. It then describes in more details a new ultrasonic-based device along with the experimental results it could provide. Document type: Part of book or chapter of boo

Biological Effects of EM Radiations from Mobile Phones

Direct health effects could result following exposure to RF by thermal (heating effects). Recent Studies have shown that there are public fears on effects that can be caused mainly by holding mobile phones close to the body, or as a result of possible non-thermal effects from both phones and base stations.  This paper offers an overview on the biological effects of electromagnetic radiation caused by mobile phones. Exposures of individuals to RF radiation from these sources will depend upon their proximity and may be above those from mobile phone base stations, although still well below guidelines. From a review of the scientific literature, it is concluded that there were no established health effects from exposure to the RF fields from mobile phones. However, there are gaps in knowledge requiring further research, but current knowledge suggests that RF exposure to levels below the guidelines were not a risk to health