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 31 for “"Performance modelling"”.
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Performance modelling of call centers
The purpose of this paper is to examine the performance of call centers that face many challenges and difficulties, most prominently unpredictable and/or time-varying primitives, as well as complex operational control and routing control behavior. The objectives are to identify facts put current …
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Diesel engine performance modelling using neural networks
Thesis (Doctor of Technology.: Mechanical Engineering), Durban Institute of Technology, Durban, South Africa, 2005.
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Process algebra approach to parallel DBMS performance modelling
Abstract unavailable please refer to PDF
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Performance modelling and enhancement of wireless communication protocols
… protocol enhancements aiming at maximising performance. A new, elegant and accurate analysis based on Markov chain modelling is developed for the idealistic assumption of unlimited packet retransmissions as well as for the case of finite packet retry limits. Simple equations are derived for …
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Sloshing tank to enhance WEC performance: Modelling, validation and integration
L'abstract è presente nell'allegato / the abstract is in the attachment
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Performance Modelling of Database Designs using a Queueing Networks Approach. An investigation in the performance modelling and evaluation of detailed database designs using queueing network models.
… There is a large body of research in the performance of database management system components, while studies of overall database system performance have been limited. Moreover, performance models specifically targeted at the database design have not been extensively studied. This thesis …
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Performance Modelling of Multi-Hop LoRa-based Networks for IoT Applications
… models were developed to enable comprehensive performance evaluation. The key performance metrics from these simulations are compared against a standard single-hop LoRaWAN network to assess the efficacy of the proposed protocols. Key findings from this study indicate that the proposed multi-hop …
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Analytical and simulation performance modelling of indoor infrared wireless data communications protocols
… and physical layer and presents protocol performance models with the aim of highlighting the critical factors affecting performance and providing recommendations to system designers for parameter settings and protocol enhancements to optimise performance. An analytical model of the IrDA …
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Support-vector-machine based automatic performance modelling and optimisation for analogue and mixed-signal designs
… to an increasing requirement for high efficiency performance modelling and optimisation methodologies in AMS synthesis systems. Recently, the support vector machine (SVM) method has been introduced into this challenging field. This research has studied the application of SVMs to AMS performance …
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A software tool for the preliminary performance modelling of central receivers and associated power cycles
A software tool for assisting in the preliminary performance modelling of central receiver solar thermal plants was developed using Matlab®. Scope was limited to the thermodynamic study of the power cycle and receiver. The receiver model was validated by comparing results to published data. The …
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Performance Modelling and Analysis of Handover and Call Admission Control Algorithm for Next Generation Wireless Networks
… Resume (PR) theories to manage and improve the performance of the integrated wireless network system. The novel algorithm is assessed using a mathematical analytic method to measure the performance by evaluating the handover dropping probability and the system utilization.
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Performance Modelling and Analysis of a New CoMP-based Handover Scheme for Next Generation Wireless Networks. Performance Modelling and Analysis for the Design and Development of a New Handover Scheme for Cell Edge Users in Next Generation Wireless Networks (NGWNs) Based on the Coordinated Multi-Point (CoMP) Joint Transmission (JT) Technique
… will be one of main problems for degrading the performance of future wireless networks at cell edge. This adverse situation will become worst in the presence of dense deployment of micro and macro cells. In this context, the Coordinated Multi-Point (CoMP) technique was introduced to mitigate ICI …
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Performance Modelling and Analysis of Weighted Fair Queueing for Scheduling in Communication Networks. An investigation into the Development of New Scheduling Algorithms for Weighted Fair Queueing System with Finite Buffer.
Analytical modelling and characterization of Weighted Fair Queueing (WFQ) have recently received considerable attention by several researches since WFQ offers the minimum delay and optimal fairness guarantee. However, all previous work on WFQ has focused on developing approximations of the …
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Analysis and improvement of medium access control protocols in wireless networks. Performance modelling and Quality-of-Service enhancement of IEEE 802.11e MAC in wireless local area networks under heterogeneous multimedia traffic.
… plays a pivotal role in wireless networks. Performance modelling and analysis has been and continues to be of great theoretical and practical importance in the design and development of wireless networks. This research is devoted to developing efficient and cost-effective analytical tools …
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Performance modelling and analysis of congestion control mechanisms for communication networks with quality of service constraints. An investigation into new methods of controlling congestion and mean delay in communication networks with both short range dependent and long range dependent traffic.
… that applying the algorithm can provide better performance than an equivalent system without the prediction. Modifying the algorithm by the inclusion of a sliding window mechanism has been shown to further improve the performance in terms of controlling the total number of packets within the …
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Improving cold climate performance of heat pumps using market-available systems
… common mild climate systems suffer significant performance losses at the low outdoor temperatures experienced in cold climates. Improved heat pumps for cold climates already exist, but they are more expensive and their adoption has been relatively low. An analysis was conducted to assess the …
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Performance analysis of relay based cooperative MAC protocols
… MAC layer: design of cooperative MAC protocols, performance modelling, and protocol enhancements. The first contribution of this thesis is dedicated to the modelling of energy consumption which aids MAC protocol developers in the design phase to devise efficient protocols and energy saving …
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Energy Optimization for Virtualized Network Environments
… in regard to the architecture of a VNE, its performance modelling, several power models, and also existing energy-saving solutions for VNEs. We approach the objective of optimizing the energy consumption in a VNE by defining and solving two main problems. The first problem optimizes the …
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The Development of an Expert System to Facilitate the Synthesis and Analysis of Hydraulic Directional Control Valves.
… of an initial design solution (V) Valve section performance modelling (vi) The redesign process (vii) Automated draughting Initial results from the prototype system have proved encouraging. The modelling techniques developed together with the redesign mechanism can reduce design lead times …
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