Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"ADSL"”.
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Peak power reduction algorithms in ADSL modems
… on a state-of-the-art programmable ADSL development platform, this thesis pursues a suitable solution for minimizing PAR given the resources of a programmable platform. This solution is integrated as a prototype implementation into a fully-functional ADSL modem and optimized for …
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Assessment of Voice Over IP as a solution for Voice over ADSL
Voice over DSL (VoDSL) is a technology that enables the transport of data and multiple voice calls over a single copper-pair. VoDSL employs packet voice technology instead of the traditional circuit switched voice. Voice over ATM (VoATM) and Voice over IP (VoIP) are the two main alternatives for …
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Simulation Study of an ADSL Network Architecture: TCP/IP Performance Characterization and Improvements using ACK Regulation and Scheduling Mechanisms
Asymmetric digital subscriber line (ADSL) is a broadband access technology capable of delivering large bandwidth over existing copper telephone line infrastructure. This research aims at characterizing and analyzing TCP/IP performance in presence of a new protocol stack (TCP/IP over PPP and ATM) …
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ATM over an asymmetric digital subscriber line
… investigates Asymmetric Digital Subscriber Line (ADSL) access networks and considers Asynchronous Transfer Mode (ATM) transport in the ADSL network. To analyse the ADSL access network, a simulation was developed using C++ and MATLAB. The thesis outlines the background and implementation of ADSL in …
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Species Preference of Viral Deubiquitinating Proteases Toward ISG15 Through Structural and Enzymatic Characterization
… area of interest, adenylosuccinate lyase (ADSL) was structurally and enzymatically investigated to build understanding of ADSL deficiency, a rare autosomal recessive disorder, which causes a defect in purine metabolism resulting in neurological and physiological symptoms. To better …
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Metabolomics of Mammalian and Cellular Models of Aging
… of cancer. Mutations in adenylosuccinate lyase (ADSL, E.C. 4.3.2.2) or 5-aminoimidazole-4-carboxamide ribonucleotide formyl-transferase/IMP cyclohydrolase (ATIC, E.C. 2.1.2.3/E.C. 3.5.4.10) lead to inborn errors of metabolism with a range of clinical symptoms, including developmental delay, …
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Qualitative Evaluation of Data Compression in Real-time Ultrasound Imaging
… using H.261 can be transmitted over a T1 or ADSL networks.</p>
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An investigation into the use of orthogonal frequency division multiplexing in packet radio
… (DVB) and Asynchronous Digital Subscriber lines (ADSL). Amateur packet radio started in 1978 and has attracted thousands of enthusiasts from around the world. The interest in packet radio has waned over the years due advances in the data transmission capabilities oflandline systems and also more …
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VEBit: um algorítmo para codificação de vídeo com escalabilidade
… bem como taxas de transmissão para ambientes em ADSL, cable modem e rede local para as camadas superiores. Com relação a qualidade do vídeo, esta varia de acordo com o grau de movimentação do mesmo. Por exemplo, no modelo "talking-head", comum em videoconferências, a qualidade se mostrou viável …
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Cellular and Organismal Ramifications of de novo Purine Synthesis Dysregulation
… the <em>de novo</em>purine synthesis enzymes ADSL, GART, and ATIC. Processes identified influenced by <em>de novo</em>purine dysregulation identified are focused around neural, embryonic, organ, and placental development, epithelial to mesenchymal transition, fatty acid and inflammatory …
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Identification and Characterization of Drug Targets in the Pyrimidine and Purine Pathways of Trypanosoma brucei
… the essentiality of adenylosuccinate lyase (ADSL), which catalyzes the formation of AMP and fumarate from adenylosuccinate. In this case, depletion of this enzyme is lethal in all conditions. These two novel drug targets offer a solution to bypassing the redundancy in the purine pathway for …