Quality of network

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  • In providing new telecommunication (telecom) services, the requisition for quality of network is more and more popular and sophisticated with high bandwidth, small value of delay time or packet loss etc. To assure the quality of network, the scheme of Quality of Service (QoS) routing algorithm based on local state information have recently been researched as a promising alternative to the currently deployed global QoS routing schemes.

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  • This paper focused on investigating the routing techniques in ad hoc networks taking into account the quality of transmission. Thence, we proposed an improved routing algorithm of DSR based on the cross-layer model in combination with the static agent. The objective of the proposed algorithm is to improve the quality of the transmission signal, reduce the blocking probability of the data packets due to the unguaranteed quality of transmission.

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  • : A progressive deformity associated with adolescent idiopathic scoliosis (AIS) negatively affects a patient’s health-related quality of life (HRQOL). Although the Scoliosis Research Society-22 (SRS-22) is the standard measurement tool for assessing HRQOL in patients with AIS, it is partially suboptimal for evaluating HRQOL in Japanese patients with AIS because of cultural differences.

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  • In order to keep quality level stable, risk factors must be realized and monitored as soon as possible. Based on information retrieved through the monitoring process, an algorithm is built for estimating the quality of services. In this paper, we introduce how this algorithm is built and how it is applied to estimate the quality of internet services.

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  • Improving Grade of Service (GOS) While Reducing RF Channels Wireless service providers are adopting new deployment strategies to reduce network costs and improve quality of service. In one urban market, a major national wireless service provider has improved network traffic loading and significantly boosted network RF performance by centralizing radio equipment and deploying digital RF transport technology. The digital RF transport systems operate in simulcast mode and reproduce the signal at radiating points throughout the network.

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  • This book guides readers through the basics of rapidly emerging networks to more advanced concepts and future expectations of Telecommunications Networks. It identifies and examines the most pressing research issues in Telecommunications and it contains chapters written by leading researchers, academics and industry professionals. Telecommunications Networks - Current Status and Future Trends covers surveys of recent publications that investigate key areas of interest such as: IMS, eTOM, 3G/4G, optimization problems, modeling, simulation, quality of service, etc.

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  • It is generally agreed that abuse of older people is either an act of commission or of omission (in which case it is usually described as ‘‘neglect’’), and that it may be either intentional or unintentional. The abuse may be of a physical nature, it may be psychological (involving emotional or verbal aggression), or it may involve financial or other material maltreatment. Regardless of the type of abuse, it will certainly result in unnecessary suffering, injury or pain, the loss or violation of human rights, and a decreased quality of life for the older person (4).

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  • The IEEE 802.16 std. includes medium access control (MAC) and physical (PHY) layer specifications and is consider to be a promising technology. Bandwidth reservation is employed to provide quality of service (QoS) to guarantee different services specified in the standard. A bandwidth request/grant scheme is defined in the IEEE 802.16 standard.

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  • There are several factors contribute to the decline of network performance, which their indications can be observed from quality changes in Quality of Service (QoS) parameters measurement result. This research proposes recommendations in improving network performance towards the changes of QoS parameters quality.

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  • In this paper, we propose a framework to adaptively meet the expected Quality of Service (QoS) attributes of web services under high number of requests using service replication. The proposed framework uses Holt’s Linear and Exponential Smoothing (HLES) time series technique to smooth and provide short term predictions of the response times and the requests arrival rates for the accessed web services.

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  • The present study aims to analyze the effect of school culture, motivation and principal leadership through teachers’ performance on education quality. It is specifically intends to identify the dominant variables affecting teacher performance.

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  • In multievent wireless sensor networks, different priority level events can appear at the same time and require different QoS (Quality of Service) provision based on various priority levels. So, in this paper, we propose a new MAC protocol using beacon and CSMA p-persistent varied by packet priority levels to reduce collisions for different priority level packets in multiple event wireless sensor networks.

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  • Currently, mobile networks and their applications have been developed quickly. Mobile users not only request various types of information, but also demand on Quality of Service (QoS). One of the measures to improve QoS is to apply mobile users’ location prediction method.

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  • A search engine is an essential tool in our daily life. With the development of society and network technology, the users’ requirement of Internet information is increasing. For most search methods, keyword searching is in a crucial position. However, what about the quality of keyword search in different search engines? This paper evaluates the quality of keyword searching among different search engines project.

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  • Fertility preservation (FP) is a major determinant of quality of life after cancer remission for women who may not have achieved their ideal family size. This article describes the FP services and strategy currently available, highlighting issues of oncofertility worldwide.

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  • The research object of the thesis focuses on the load balancing routing algorithms and QoT aware routing in MANET. The research scope of the thesis is the DSR and AODV routing protocols.

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  • Managing therapy-related side-effects and improving health-related quality of life in patients with colorectal cancer is still challenging. The need for an effective management of adverse events and unmet supportive care needs have been widely discussed. In the past decade, interventions by nursing staff gained more and more importance.

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  • Administering Cisco QoS in IP Networks discusses IP Quality of Service (QoS) and how it applies to Enterprise and Service Provider environments. It reviews routing protocols and quality of service mechanisms available today on Cisco network devices (routers, switches, etc.).This guide provides examples and exercises for a hands-on experience to give you the background and necessary details to implement these capabilities in your network today.

    pdf561p daokim 10-08-2009 328 85   Download

  • This document provides design considerations and guidelines for implementing Cisco Quality of Service within an enterprise environment. This document is the second major update to the design guidelines and information presented in the Cisco AVVID Network Infrastructure Enterprise Quality of Service Design Solutions Reference Network Design (August, 2002). This document assumes that you are already familiar with Quality of Service terms and concepts. If you want to review any of those terms and concepts, refer to Cisco Quality of Service documentation at:...

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  • Wireless and Mobile Internet have changed the way people and businesses operate. Communication from any Internet access point, including wireless networks such as UMTS, GPRS or WLAN has enabled organizations to have a mobile workforce. However, networked applications such as web, email, streaming multimedia etc. rely upon the ability of timely data delivery. The achievable throughput is a quality measure for the very task of a communication system, which is to transport data in time. Throughput is thus one of the most essential enablers for networked applications.

    pdf0p monkey68 13-03-2009 151 51   Download



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