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 25 for “"Network problems"”.
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Probabilistic Models and Algorithmic Analysis of Network Problems
Network-related problems span over many areas in computer science. In this dissertation, we investigate two problems, one is in the domain of distributed computing, and the other is in the domain of graph mining. We approach these problems by probabilistic tools, to model, analyze, and design …
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The solution of power-network problems on large-scale digital computers
Thesis (M.S.) Massachusetts Institute of Technology. Dept. of Electrical Engineering, 1949.
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Network Problem Diagnosis and Status Assessment for Wireless Sensor Network in Civil Infrastructure Monitoring
… is to develop a methodology for diagnosing network problems and assessing network status in scenarios where wireless sensor network (WSN) systems experience issues and faults based on the understanding of the operating mechanisms of WSNs in civil infrastructure monitoring. The proposed …
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Estudo da estabilidade de circuitos RC via otimização
Study of non-linear RC network stability. An RC network is considered assymptotically stable when the capacitar charges converge to equilibrium charges. The study is developed from the analysis of the behavior of resistive networks. It is assumed that all resistors have increasing characteristics …
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Approximation Algorithms for Geometric Networks
… algorithms for several computational geometry problems. The underlying structure for most of the problems studied is a geometric network. A geometric network is, in its abstract form, a set of vertices, pairwise connected with an edge, such that the weight of this connecting edge is the …
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An Approach to Using Cognition in Wireless Networks
Third Generation (3G) wireless networks have been well studied and optimized with traditional radio resource management techniques, but still there is room for improvement. Cognitive radio technology can bring significantcant network improvements by providing awareness to the surrounding radio …
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Design and implementation of split TCP in the Linux kernel
… reliable communication between computers over networks of unpredictable quality. It has admirably succeeded in satisfying the needs of the growing internet. Yet, there are combinations of network problems too bad even for TCP. In particular, in the situation of simultaneously very high delay …
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Robust fluid control of multiclass queueing networks
… to the optimal control of multiclass queueing networks. We develop models that take into account the uncertainty of interarrival and service time in multiclass queueing network problems without assuming a specific probability distribution, while remaining highly tractable and providing insight …
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Network routing problems in stochastic-state networks
Network Routing problems focus on exploiting the network-based struc- ture of a mathematical optimization problem to establish e cient solutions that are tailored to the problem at hand. The topic of this dissertation relates to a speci c class of network routing problems, those in which the …
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Distributed control of coded networks
The introduction of network coding has the potential to revolutionize the way people operate networks. For the benefits of network coding to be realized, distributed solutions are needed for various network problems. In this work, we look at three aspects of distributed control of coded networks. …
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Multicriteria Approximation of Network Design and Network Upgrade Problems
Network planning has come to great importance during the past decades. Today's telecommunication, traffic systems, and logistics would not have been evolved to the current state without careful analysis of the underlying network problems and precise implementation of the results obtained from those …
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Automating Performance Diagnosis in Networked Systems
… system performance, since both software and network problems have the same symptom: a stalled application. The central thesis of this dissertation is that the source of performance stalls in a distributed system can be automatically detected and diagnosed with very limited information: the …
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Selfish versus coordinated routing in network games
A common assumption in network optimization models is that a central authority controls the whole system. However, in some applications there are independent users, and assuming that they will follow directions given by an authority is not realistic. Individuals will only accept directives if they …
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Optimizing safety stock placement in general network supply chains
… algorithm for safety stock placement in general-network supply chains. We first show that the general problem is NP-hard. Next, we develop several conditions that characterize an optimal solution of the general-network problem. We find that we can identify all possible candidates for the optimal …
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Cross-layer design for network performance optimization in wireless networks
… optimization approach to solve the complex network problems. Paper l and paper 2 first show that ignoring the bandwidth constraint can lead to infeasible routing solutions. A sufficient condition on link bandwidth is proposed that makes a routing solution feasible, and then a mathematical …
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Resilient payment systems
… systems in particular. We identified that network coverage, central points of failure, and attacks may cripple system performance. The premise of our research is that offline capabilities are required to produce resilience in critical systems. We focus on issues related to network problems …
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Optimisation of heat exchanger network maintenance scheduling problems
… that arise from the scheduling of heat exchanger network maintenance problems which undergo fouling and run continuously over time. The original contributions of the current research consist of the development of novel optimisation methodologies for the scheduling of cleaning actions in heat …
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Performance evaluation of active network-based unicast and multicast congestion control protocols
… investigates the application of the Active Networks (AN) paradigm in congestion control. ANs provide an alternative paradigm to solving network problems by allowing the network elements to perform computation. Thus, the AN is a promising paradigm to shorten the deployment time of new …
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Exploring the facilitators and barriers towards implementation of electronic prescribing, dispensing, and administration of medicines in hospitals in Ireland.
… Key barriers consisted of hardware and network problems, altered work practices, and weakened interpersonal communication between healthcare professionals and with patients. Phase two: - This phase employed a qualitative phenomenological design to gain original insight into the …
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