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.
Results
Showing 1 to 16 of 16 for “"secondary network"”.
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Crystalline radiation-crosslinked hydrogels of poly(vinyl-alcohol) as potential biomaterials: a study of the properties of poly(vinyl-alcohol) hydrogels in relation to conditions of primary crosslinking by irradiation, and of secondary network reinforcement by crystallization,
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1974.
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Impact of electric vehicle loads on utility distribution network voltages
… vehicle loads (EVs) on utility distribution secondary networks and determines the factors affecting the network voltage quality. The study is conducted using two actual distribution circuits, residential and mix residential and industrial circuits. The study reveals the following. A distant …
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Systematically controlling the error rates in variation-prone networks-on-chip for energy efficiency
Networks-on-Chip (NoCs) are prone to within-die process variation as they span the whole chip. To tolerate variation, their voltages (Vdd) carry overprovisioned guardbands. As a result, prior work has proposed to save energy by dynamically managing Vdd, operating at reduced Vdd while occasionally …
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The landscape treatment of noise and air pollution on urban expressways : a dissertation submitted in partial fulfillment of the Diploma in Landscape Architecture at Lincoln College, University of Canterbury
… a city four advantages over a conventional road network. It provides better access to the central business district, and thereby reduces the time required for the journey. It offers a safer journey as the number of potential hazards along the route are minimised by the elimination of …
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Cognitive Networks: Foundations to Applications
… is far more daunting. Research in cognitive networks seeks to provide a solution to the diffculty of effectively using the expanding capabilities of wireless networks by embedding greater degrees of intelligence within the network itself. In this dissertation, we address some fundamental …
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Engineering mechanical dissipation in solid poly(ethylene glycol) hydrogels with bio-inspired metal-coordinate crosslinks
… glycol (PEG) hydrogels with two crosslinked networks; a primary permanent network composed of covalently crosslinked 4-arm PEG and a secondary network composed of 4-arm PEG functionalized with histidine on each arm. The histidine decorated PEG forms a mechanically reversible network via metal …
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PV Hosting Analysis and Demand Response Selection for handling Modern Grid Edge Capability
… that characterize the changing distribution network. These transformations taking place at the edge of the grid call for improved planning and operation practices. In this context, this thesis aims to improve the grid edge functionality by putting forth a method to address the problem of high …
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Polymer hydrogel nanoparticles and their networks
… two levels of structural hierarchy: the primary network is crosslinked polymer chains in each individual particle, while the secondary network is a system of crosslinked nanoparticles. The covalent bonding contributes to the structural stability of the nanostructured gels, while self-assembly …
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Spectrum sharing for multi-user massive MIMO networks
… we propose a creative approach to advance 5G network technologies by investigating the impact of employing an underlay spectrum sharing (USS) scheme on the performance of two massive multi-input-multi-output (MIMO) networks. We explore an USS approach where a multi-user massive MIMO network …
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Optimal resource sharing and spectrum leasing in energy efficient relay-assisted networks
Assuming a bidirectional relay assisted network, we first study the problem of optimal resource sharing between two transceiver pairs. One of the pairs, referred to as the primary pair, owns the spectral resources while the other pair, called the secondary pair, is considered to own the relay …
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Innovative Coexistence: Design and Analysis of Underlay Signaling in 5G New Radio
… frequency band of the primary signals. The secondary users of the secondary network (i.e., a wireless network consisting of primary and secondary networks) primarily utilize the underlay, which increases spectral efficiency and improves the network capacity. This thesis focuses on underlay …
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Utilization of Channel State Information in Transmission Control for Wireless Communication Networks
… The first part is about energy harvesting networks. The transmission policies in energy harvesting wireless systems need to adapt to the harvested energy availability and the channel characteristics. We start by considering the scheduling policy for a single energy harvesting source node …
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Coexistence of Wireless Networks for Shared Spectrum Access
… users) can be opportunistically utilized by secondary users. To achieve this, we need to solve two problems: (i) primary-secondary incumbent protection, i.e., prevention of harmful interference from secondary users to primary users; (ii) secondary-secondary network coexistence, i.e., …
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Efficient Sharing of Radio Spectrum for Wireless Networks
… both licensed and unlicensed bands for wireless networks. For licensed bands, we study two coexistence paradigms: transparent coexistence (a.k.a., underlay) and policy-based network cooperation (a.k.a., overlay). These two paradigms can offer significant improvement in spectrum utilization and …
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Spectrum-efficient Cooperation and Bargaining-based Resource Allocation for Secondary Users in Cognitive Radio Networks
… by enabling cooperative communication in the secondary networks. We investigate the ability of a two-hop cooperative transmission to reduce the effect of primary user interruption on secondary transmissions. We analyze the performance of a cooperative secondary transmission by modeling the …
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Sistema de gestão integrada de fogos rurais: caso de estudo na Área Metropolitana do Porto
A Comissão Sub-regional do Sistema de Gestão Integrada de Fogos Rurais (CSGIFR) criada na Área Metropolitana do Porto, e os diferentes grupos de trabalho, são compostos pelas entidades regionais e sub-regionais, de acordo com o art.º 5º do D.L. nº82/2021 de 13 de outubro. O modelo de gestão e de …