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 20 of 56 for “"Data delivery"”.
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Social network support for data delivery infrastructures
… to the user base and thereby build better data delivery infrastructures. This claim is supported by two case studies, which apply social information in challenging situations where traditional content staging is infeasible. Our approach works by examining empirical traces to identify …
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Opportunistic sensing and mobile data delivery in the CarTel System
… duration network connections to provide low-cost data delivery (opportunistic networking). We use these two techniques to build a mobile sensor computing system called CarTel, to collect, process, deliver, and visualize spatially diverse data. CarTel consists of three key components: hardware …
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Energy-Aware Topology Control and Data Delivery in Wireless Sensor Networks
… two fundamental problems: topology control and data delivery. We first address energy-aware topology control taking into account throughput per unit energy as the primary metric of interest. Through both experimental observations and analysis, we show that the optimal topology is a function of …
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Effective methods for secure data deliver in IoT
… in IoT to reduce security and privacy issues of data delivery in IoT and, as a consequence, improve network performance. We divide the research into three sections, concentrating respectively on the problem of security, reliability, efficiency, and privacy in IoT data delivery. By investigating …
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Specification and verification of the Service Specific Connection Oriented Protocol
… function, in turn, makes use of an assured data delivery service. This service is provided by the Service Specific Connection Oriented Protocol (SSCOP), which resides in the ATM Adaptation Layer (AAL). A specification of the SSCOP has been developed in Estelle. In addition, testing modules …
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Distributed learning automata based data dissemination in swarm robotic systems
… the swarms work in render any previous contact data between robots useless as the contact patterns are different for each deployment. In the case of military and disaster scenarios, delivering data items quickly is imperative to the success of a mission. However, robots have limited battery and …
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Evaluating and improving collection tree protocol in mobile wireless sensor network
… better than reactive MANET protocols in terms of data delivery ratio and control overhead under low traffic rates. The end-to-end delay obtained in case of reactive protocols is also higher compared to that obtained when using CTP, which is due to their route discovery process. This thesis …
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Enhanced snr-based admission control algorithm for vehicular ad-hoc network
… other and with roadside infrastructure smartly. Data traffic in VANET can be categorized into safety and non-safety, where safety is a very critical point and non-safety is related to entertainment. Various VANET performance challenges are considered in terms of Quality of Service (QoS) which …
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The development of a prototype Zone-Plate-Array Lithography (ZPAL) system
… The system development requires an efficient data-delivery system to promote throughput and a thoughtful optical channel to optimize the lithographic performance of zone-plates. Lithography results obtained from the prototype will be presented along with basic performance characteristics.
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Reliable Multicast in Mobile Ad Hoc Wireless Networks
… group communication, where one source transmits data packets through the network to multiple receivers. Proposed applications for MANET group communication ranges from personal network apps, impromptu small scale business meetings and gatherings, to conference, academic or sports complex …
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Design of interactive maps for ocean dynamics data
… ocean dynamics necessitate robust and efficient data delivery and visualization techniques. The multi-disciplinary simulation, estimation, and assimilation systems group at MIT (MSEAS) focuses on capturing and predicting diverse ocean dynamics, including physics, acoustics, and biology on varied …
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Technical benefits and cultural barriers of networked Autonomous Undersea Vehicles
… system from the scientist who benefits from the data to the vehicle itself. Sections 3 and 4 outline the needs for an AUV system as they currently exist and describe the key physics-based limitations of operations. Section 5 takes a broader look at the system goal as data delivery, not just the …
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The Multipath Fault-Tolerant Protocol for Routing in Packet-Switched Communication Network
… need to address the need for reliability of data delivery. Reliability can be improved by incorporating fault tolerance into network routing, wherein a set of multiple routes are used for routing between a given source and destination. This thesis proposes a new fault-tolerant protocol, …
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Beyond music sharing: an evaluation of peer-to-peer data dissemination techniques in large scientific collaborations
The avalanche of data from scientific instruments and the ensuing interest from geographically distributed users to analyze and interpret it accentuates the need for efficient data dissemination. An optimal data distribution scheme will find the delicate balance between conflicting requirements of …
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Attojoule scale computation of large optical neural networks
… for computation and optical fan-out for data delivery. In this thesis I work towards the analysis and implementation of both analog and digital optical neural networks. For analog optical neural networks I discuss both the physical implementation of this system as well as an analysis of …
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Duty-Cycled Wireless Sensor Networks: Wakeup Scheduling, Routing, and Broadcasting
… when the time domain must be considered for data delivery in duty-cycled WSNs. We formulate the routing problem as time-dependent Bellman-Ford problem, and use vector representation for time-varying link costs and end-to-end (E2E) distances. We present efficient algorithms for route …
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Predictable Real-Time Wireless Networking For Sensing And Control
… routing protocol MTA that predictably delivers data by their deadlines, and a scheduling protocol PRKS to ensure a certain link reliability based on the Physical-ratio-K (PRK) model, which is both realistic and amenable for distributed implementation, and a greedy scheduling algorithm to deliver …
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Improving packet delivery efficiency using multi-radio diversity in wireless LANs
Data transmissions in Wireless Local Area Networks (WLANs) often suffer from bit errors that arise from the notoriously complex and time-varying signal propagation characteristics of the wireless medium. A number of physical factors such as attenuation and multi-path are prevalent indoors and can …
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In-Network Processing For Mission-Criticalwireless Networked Sensing And Control: A Real-Time, Efficiency, And Resiliency Perspective
… optimizing packet packing and the timeliness of data delivery. We identify the conditions under which the problem is strong NP-hard, and we find that the problem complexity heavily depends on aggregation constraints instead of network and traffic properties. For cases when the problem is NP-hard, …
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