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 20 of 47 for “"Network density"”.
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Impact of Transformational Leader Behaviors on Diverse Team Performance and Persistence
… for these conflicting results is a pair of network structural variables in the team: external network range and internal network density. Diverse teams are known for being strong in the former, but weak in the latter. With both variables known to be positively related to team performance, …
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Exploring how enrollment strategies, social support, and network densities influence reach, engagement, retention, and behavior change among intervention participants in southwest Virginia
… and behavior change are influenced by social networks. Contrary to our hypothesis, using an 'enrolling with others' recruitment strategy did not improve reach, engagement, retention, or behavior change; rather, enrolling alone was associated with greater significant differences in engagement …
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Analysis of Association Between Demographic, Socioeconomic, and Built Environment Factors and Pedestrian Safety Using Traditional and AI Approaches
… rates. The findings reveal that auto-oriented network density is consistently associated with higher pedestrian crash risks, while pedestrian-oriented network density and sidewalk coverage generally have negative associations. Transit frequency and socio-economic factors, such as the percentage …
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On the performance of probabilistic flooding in wireless mobile ad hoc networks
… induce broadcast storms that severely degrade network performance due to redundant retransmission, collision and contention. Probabilistic flooding, where a node rebroadcasts a newly arrived one-to-all packet with some probability, p, was an early suggestion to reduce the broadcast storm …
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Performance study on a dual prohibition Multiple Access protocol in mobile Ad Hoc and Wireless Mesh networks
Wireless networks are less reliable than wired networks because channels are “exposed” to the surrounding environment that is susceptible to interference and noise. To minimize losses of data due to collisions, wireless networks need a mechanism to regulate the access on the transmission medium. …
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High throughput path selection for unstructured data center networks
… the need for higher throughput data center network design. Recent work to provide topologies with much denser interconnects pose a difficult challenge for routing of traffic within a data center. Even with proposals like MPTCP that improve upon TCP, there is a still a gap between theoretical …
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FLOC-SPANNER: An O(1) time, locally self-stabilizing algorithm for geometric spanner construction in a wireless sensor network
… a popular form of topology control in wireless networks because they yield an efficient, reduced interference subgraph for both unicast and broadcast routing.;In this thesis work a distributed algorithm for creation of geometric spanners in a wireless sensor network is presented. Given any …
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Yo Aquí y Vos Allá: Community, Support, and Well-Being Among Immigrants from Central America
… first, describe the association between social network density and mental health outcomes of Central American immigrants. Second, this study will utilize social network analysis and personal interviews to map immigrant’s personal networks in order understand how immigrants conceptualize support. …
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Beyond the Sum: A Network Analysis of Adverse Childhood Experiences and Behavioral Outcomes in Justice-Involved Youth
… (ACEs) among justice-involved youth using network analysis. Despite experiencing higher rates of childhood adversity, female youth show lower recidivism rates than males, presenting an empirical paradox. Using a sample of 19,454 justice-involved youth (75% male), this study applies novel …
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Moving-baseline localization for mobile wireless sensor networks
… to arrive at a globally consistent view of the network expressed in its own "rest frame." Changes in any node's motion cause deviations between observed and predicted ranges at nearby nodes, triggering revision of the trajectory estimates computed by all nodes. We implement and analyze our …
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Age of information for broadcast and collection in spatially distributed wireless networks
We consider a wireless network with a base station broadcasting and collecting timesensitive data to and from spatially distributed nodes in the presence of wireless interference. The Age of Information (AoI) is the time that has elapsed since the mostrecently delivered packet was generated, and …
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Low-energy and spectrally-efficient IoT sensors with low-cost additive manufacturing
… per-sensor bandwidth occupancy which allows high network density, c) boost datarates up to the Gigabit-range by utilizing mmWave frequency bands. RF harvesting front-ends are developed to complement the communication front-ends, taking into account the complex requirements of the IoT: hassle-free …
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Critical thickness in silicone thermosets
… theoretical models as a basis, the effect of network density, temperature and strain rate on critical thickness is discussed. It is also shown that fracture strain is the characteristic material property to measure film toughness. A variety of silicone thermosets are studied to demonstrate …
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On the Scalability of Ad Hoc Dynamic Spectrum Access Networks
… bands. Our study focuses on the scalability of network performance, which we define in terms of network transport capacity and end-to-end throughput per node, as the network density increases. We develop an analytical procedure for performance evaluation of ad hoc DSA networks using Markov …
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The Nature of Night Eating Syndrome: Using Network Analysis to Understand Causal Symptomological Relationships
… the core symptoms in a psychopathology network for night eating syndrome (NES) among persons with and without overweight/obesity, and to compare the network density between samples with and without NES. The current conceptualization of NES, and interventions based on that …
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Distribution and Population Characterization of Clinch Dace (Chrosomus sp. cf. saylori) in the Upper Clinch River System, Virginia
… highly correlated spatially in the nested stream network. Density estimates from mark-recapture sampling suggest that Clinch Dace occur at low densities in approximately 31.5 km of headwater streams. The mean estimate of global population size was 6,706 individuals. Some populations could be …
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KNN Query Processing in Wireless Sensor and Robot Networks
In Wireless Sensor and Robot Networks (WSRNs), static sensors report event information to one of the robots. In the k nearest neighbour query processing problem in WSRNs, the robot receives event report needs to find exact k nearest robots (KNN) to react to the event, among those connected to it. …
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Propagation models for multiple-antenna systems : methodology, measurements and statistics
… that depend on these parameters such as network density, channel allocation, and channel-state information (CSI) update rate. Lastly we provide a parametrization of the environment into measurable factors that can be used to predict channel behavior including link-length, Line-Of-Sight …
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Towards efficacy and efficiency in sparse delay tolerant networks
… a new way of communication via Delay Tolerant Networks (DTNs), whereby messages are routed by the personal devices carried by ever-moving people. Although a DTN is a type of Mobile Ad Hoc Network (MANET), traditional MANET solutions are ill-equipped to accommodate message delivery in DTNs due …
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Mechanical reinforcement and property tuning of adhesive elastomers with polymer-grafted inorganic nanoparticles
… the adhesive component, either by increasing network density via crosslinking bonds or addition of immobilizing filler particles. The result is a decrease in adhesive power, further limiting their utility as adhesive products, and represents a fundamental tradeoff between network bonding …
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