Дисертації з теми "Delayed electrons"
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Lu, Mu-Chiao. "Delay identification and model predictive control of time delayed systems." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22045.
Повний текст джерелаCette thèse aborde deux problématiques de recherche relatives à la classe des systèmes linéaires et non-linéaires avec retard. Le premier problème a trait à l'identification des retards dans les systèmes avec retard. Le second problème consiste à concevoir des commandes d'horizon fuyant pour les systèmes avec retard. Des solutions originales sont proposées pour ces deux problèmes et leur efficacité est évaluée à l'aide d'exemples et d'applications. Dans cette thèse, le problème de l'identification du retard est abordé en premier. La descente prononcée et les identificateurs du retard du type Newton généralisé sont proposés. Les problèmes de commande d'horizon fuyant pour les systèmes avec retard sont explorés. Tant pour les systèmes avec retard linéaires que non-linéaires, des règles de commandes asymptotiquement stabilisatrice pour les horizons fuyants sont proposées. Finalement, pour reduire conservatisme untraduit par l'incertitude du retard, une stratégie d'horizon fuyant adaptif, qui combine le contrôle de retour avec le retard d'identification en ligne, est aussi discuté. La thèse démontre les points suivants. (1) Développement d'identificateurs de retard qui sont indépendants de l'identification des paramètres du système et robuste à l'égard des erreurs de trajectoire mesurée et de fonctions d'entreés externes. (2) Développement d'identificateurs de retard pratiques pour les systèmes avec retard linéaires et non-linéaires pour réduire la conservatisme de conception des commandes robustes existantes. (3) Développement de techniques de commande prédictive pour les systèmes avec retard linéaires et non-linéaires. (4) Preuve rigoureuse de la stabilité asymptotique des commandes prédictives proposées. (5) Application du schéma d'estimation en ligne aux commandes prédictives proposées.
Jacobi, Christoph, Norbert Jakowski, Gerhard Schmidtke, and Thomas N. Woods. "Delayed response of the global total electron content to solar EUV variations." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-212283.
Повний текст джерелаJamal, Alden Mohammed Kais. "Robust and Resilient Control for Time Delayed Power Systems." Thesis, Southern Illinois University at Edwardsville, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1588452.
Повний текст джерелаPower system is the backbone of modern society. Traditionally, over 90% of the electrical energy is produced by power generation systems driven by steam turbines. Recently, with the development of renewable energy resources, wind energy conversion systems are the proven solutions for the next generation sustainable energy resources. Stability and performance of these power systems are the primary concerns of power system engineers. To better characterize the dynamical behaviors of power systems in practical applications, time delays in the feedback state variables, systems modeling uncertainties, and external disturbances are included in the state space model of the power system in this work. Linear matrix inequality based robust and resilient controllers satisfying the H_infinty performance objective for time delayed power systems are proposed. Fixed time delays are assumed to exist within the system state and input signals. The system model is assumed to have unstructured bounded uncertainties and L_2 type of disturbances. Furthermore, controller gain perturbations are assumed to be of additive type. The proposed control techniques have been applied to variable speed permanent magnet synchronous generator based wind energy conversion systems, and electrical power generation systems driven by steam turbine. Computer simulations conducted in MATLAB show the eectiveness of the proposed control algorithms.
Saloga, Clinton W. "Have delayed independence and poor initial institutions been economically costly for Latin Americans?" Thesis, Wichita State University, 2011. http://hdl.handle.net/10057/3971.
Повний текст джерелаThesis (M.A.)--Wichita State University, The W. Frank Barton School of Business, Dept. of Economics
Lefever, Timothy W. "Effects of olanzapine on olfactory delayed matching-to-sample in rats." View electronic thesis (PDF), 2009. http://dl.uncw.edu/etd/2009-3/lefevert/timothylefever.pdf.
Повний текст джерелаLaichi, Farouk. "Performance study of the leaky least mean square adaptive algorithm with delayed adjustments." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6748.
Повний текст джерелаWang, Xuan. "Pedestrian delays at signalized intersections." abstract and full text PDF (UNR users only), 2009. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3387827.
Повний текст джерелаJacobi, Christoph, Claudia Unglaub, Gerhard Schmidtke, Robert Schäfer, and Norbert Jakowski. "Delayed response of global ionospheric electron content to EUV variations derived from combined SolACES-SDO/EVE measurements." Universität Leipzig, 2015. https://ul.qucosa.de/id/qucosa%3A16645.
Повний текст джерелаDie ionosphärische Antwort auf Variationen des solaren EUV im Zeitraum 2011-2014 wird anhand eines Proxys dargestellt, welcher die primäre Ionisation auf der Basis gemessener solare EUV-Spektren beinhaltet. Die täglichen Werte werden mit Analysen des global gemittelten Gesamtelektronengehalts verglichen. Auf Zeitskalen der solaren Rotation und länger findet sich eine Zeitverzögerung zwischen der EUV-Variation und des derjenigen des Gesamtelektronengehalts von ein bis 2 Tagen, welche auf dynamische Prozesse im System Thermosphäre/Ionosphäre hinweist. Die Verzögerung ist auf kurzen Zeitskalen nicht zu sehen. Wenn diese Verzögerung berücksichtigt wird, erhöht sich die durch EUV-Variationen erklärte Varianz des Elektronengehalts von 71% auf 76%.
Haule, Damian Daniel. "Virtuality and reality of a near-optimal time-delayed teleoperator control system based on teleprogramming paradigm." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=42052.
Повний текст джерелаRemote robotic systems are often very complex and difficult to operate, especially as multiple robots are integrated to accomplish difficult tasks in an unstructured or hazardous environments. In addition, training the operators is time-consuming and costly. A simulated virtual reality based system will provide a means by which operators can be trained to operate in an intuitive, and cost-effective way. Operator interaction with the remote system is at a high, task-oriented, level. Real-time state monitoring can prevent illegal robot actions and provides interactive feedback. A teleprogramming based simulator is essential for cost-effective Teleoperator Interface & Training (TIT) using supervisory control approach. An intelligent virtual interface is required which provides a rich means of presenting diagnostic and visual state information to the operator with reduced fatigue in real-time.
The Mobile Servicing System (MSS) Operations and Training Simulator (MOTS) will be used as a leading edge implementation of the teleprogramming concepts. MOTS provides high-fidelity, functional kinematic and dynamic software simulation of the MSS Space Segment in on-orbit configuration. MOTS is a real-time simulation environment of varying degrees of fidelity, along with an aggregate of software tools intended for the support of MSS space operations and training of crew and ground personnel. Primary interface to MOTS simulation models is through a Common Data Base (CDB) where telecommands are stored in a common shared memory. Hence, all telecommand data elements that are used to control the simulation modules are exported through the CDB by the Human Computer Interface (HCI) pages, hand controllers (H/C) and Display & Control (D&C) panel. Communication between simulation modules is achieved through the CDB in real-time.
Bullard, Laura A. "The effects of the NMDA antagonist dizocilpine on an olfactory delayed match-to-sample task in rats." View electronic thesis (PDF), 2009. http://dl.uncw.edu/etd/2009-1/bullardl/laurabullard.pdf.
Повний текст джерелаLiu, Xuan. "Efficient delay-tolerant particle filtering." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=95173.
Повний текст джерелаLe suivi est souvent effectué à l'aide de plates-formes composées de multiples capteurs où les mesures sont retransmises à un centre de fusion via un réseau sans fil. Lorsque des conditions environnementales défavorables entraînent des pertes de paquets, la transmission de ces mesures peut être retardée. Ces dernières sont appelées mesures déclassées (OOSM). Jeter ces OOSMs peut gaspiller des informations importantes et peut affecter négativement la performance de l'algorithme de suivi. Cette thèse propose un nouvel algorithme de filtrage de particules tolérantes au délai (delay-tolerant) qui n'est pas gourmand ni en temps de calcul, ni en mémoire. L'algorithme estime la quantité d'information des OOSMs et rejette immédiatement les mesures inutiles. Les mesures contenant suffisamment d'information sont ensuite traitées à l'aide au filtre à particules. Si la mesure induit un changement radical dans la distribution de filtrage actuelle, le filtre à particules est ré exécuter pour augmenter la précision. Nos résultats de simulation indiquent que notre nouvel algorithme ne traite qu'une petite fraction des OOSMs, mais il performe presque aussi bien que de nombreuses techniques qui requièrent des calculs plus complexes et qui ont de plus importants besoins de stockage.
Williams, Scott Lawrence. "Separation of mixed radiometric land cover temperatures in time-delayed bi-angular views using estimated fractional differential coefficients." Thesis, New Mexico State University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3582404.
Повний текст джерелаA dissertation is presented concerning the separation of radiometric temperatures of sparse land covers from two views of mixed thermal and NDVI samples with a time delay between the views. The research scope is limited to a simple binary land cover of vegetation canopy and bare soil. Previous methods have been developed using simultaneous views but little work has been done on time-delayed sampling, which is the focus of this study.
The dissertation hypothesis is based on the observation that the rate of change of a mixed radiometric temperature with respect to actual fractional vegetation cover, dTm/dfa originally constructed using spatially varying vegetation covers, can also be constructed using bi-angular views of the same land parcel but with a different interpretation; that bi-angular samples provide a perceived fractional cover differential, dTm/df0 . The hypothesis is that dTm/df0 can be used for sub-pixel temperature discrimination of binary land covers and, moreover, that the separate soil and vegetation total differential coefficients dTm/df0 and dTv/df0, required in the algebraic system, can be characterized to sufficiently capture environmental influences between samples in time. To test the hypothesis, this study heuristically derives a first-order estimation of the differential coefficients, required to decompose land cover temperatures from mixed data points, for any time-delayed sampling spanning the day. Applying the estimated values on similar target days gives a high success rate for a local time span of at least a week.
This approach, once scaled up, could be used by platforms with inherent time delays, such as tandem weather satellites, to provide separate land cover temperature estimates from low-resolution sensors.
Wang, Yujun 1968 March 4. "Delay modeling of CMOS transistor chains." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33999.
Повний текст джерелаWe examine, in particular, the SCMS reduction techniques presented in [5] and [6], both of which use a two-step process consisting of (i) mapping the input signals to a single equivalent one and, (ii) mapping the SCMS transistors to a single MOSFET. The authors of [6] claim that their model is superior to the simpler one used in [5]. Our analysis, based on a 0.35 micron technology, shows that the same accuracy claimed in [6] can be achieved by replacing their Step (ii) by a much simpler one based on the more empirical implementation used on [5]. We also show that the weighting coefficients used by [6] in Step (i) to compute the equivalent input signal, are functions of the input signal transition time, unlike the claim made in [6] that they are constant. We also conclude that, in the final analysis, the accuracy of our modified model as well as the one in [6] is limited by the empirical formula used to determine the equivalent input transition time.
Ma, Min. "RC delay metrics for interconnect optimization." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81554.
Повний текст джерелаIn this thesis, we first review an existing delay metric for wires and then try to extend it to arbitrary tree networks. Thorough tests demonstrate it to be accurate and efficient for wires only. We then present an explicit delay metric for dealing with near nodes in RC interconnect, which is based on the first three moments of the impulse response. An accurate model for the delay to the internal node of a two-pole one-zero RC circuit serves as the core of the new metric. Since no simplifying assumption is made in the model, it returns excellent accuracy at the internal node in any two-node RC circuit, no matter how close the internal node is to the source. The delay at near nodes in arbitrary RC trees is then computed by order reduction to a two-pole system using the first three moments of the impulse response. A significant further improvement in accuracy is achieved by correcting for the skewness of the impulse response. In parallel, a simple explicit metric is introduced for predicting the delay to far nodes, where order reduction is not needed. This is based on the first moment of the node of interest and the second moment of the slowest node. Furthermore a simple criterion is derived for distinguishing near nodes from far nodes. Tests on RC models of wires and trees demonstrate that the combination of these two metrics is accurate within 2% for far nodes and within 5% for near nodes with delays which are as much as an order of magnitude smaller than that of the slowest node.
Wang, Yi. "Superconducting coplanar delay lines." Thesis, University of Birmingham, 2005. http://etheses.bham.ac.uk//id/eprint/7/.
Повний текст джерелаNatsheh, Ammar Nimer. "Analysis, simulation and control of chaotic behaviour and power electronic converters." Thesis, Loughborough University, 2008. https://dspace.lboro.ac.uk/2134/5739.
Повний текст джерелаDevetak, Fabrizio U. "Minimizing maximum path delay in multipath connections." Thesis, Illinois Institute of Technology, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3575344.
Повний текст джерелаMinimizing packet delay (or packet latency, as it is often called) is an important goal in modern telecommunication networks. In a network with given physical and topological characteristics, uneven distribution of traffic between nodes may result in parts of the network being underutilized while other parts may experience congestion and its related effect of higher delays, and even packet loss if buffers become overloaded. Overload results in longer queuing delays, which are a major, if not the major, source of packet delay. Internet nodes typically route based on a single best (shortest) path without taking into account link occupancy and without taking full advantage of all available network resources. So a method for improving network performance is to allow nodes to use multiple paths to route packets to a given destination. In this research project the main objective is to find the best algorithm that, applied to a multicommodity network, produces multipath flow assignments that minimize the maximum cross-network delay. The motivation for this objective is the tighter requirements for quality of service coming from real-time streaming services, such as voice and video, that restrict the maximum source-destination packet delay. An analytical approach based on Lagrange Multipliers was used, leading to an iterative algorithm that can be proved to converge to the optimal path and flow configuration. From that algorithm a simplified heuristic algorithm was derived that achieves results close to optimal. Another heuristic, but more intuitive, algorithm was also investigated and was found to also offer good results and to be computationally efficient. The two heuristic algorithms were simulated using Java programs and. as a benchmark, the single path algorithm that is commonly used in the Internet was also simulated in Java. Performance comparisons for the three types of simulations are also provided. For a more realistic evaluation, the intuitive heuristic algorithm was also simulated in the NS-3 simulation environment, an industry standard widely used in the academic world. For the NS-3 simulation a distributed routing protocol that implements the maximum delay minimization algorithms without centralized control, was designed.
Nabavi-Lishi, Abdolreza. "Delay and current evaluation in CMOS circuits." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41166.
Повний текст джерелаThe extension to general CMOS circuits is achieved through a collapsing method which reduces each gate to an equivalent inverter. Unlike previous attempts to solve this problem, our technique is not limited to single input transitions or to step inputs. It also takes into account the relative positions of the switching inputs in series-connected transistors.
The improvement in computation speed, for delay and maximum current in large circuits, approaches 4 orders of magnitude compared to HSPICE using the level-3 MOSFET model. For current waveforms the speed improvement approaches 3 orders of magnitude. The accuracy of computing the delay and the supply current is usually within 10% and 12%, respectively. Although the technique has been tested on static CMOS gate circuits, the extension to dynamic circuits is straightforward.
Parameswaran, Nair Ravi Sankar. "Delay-insensitive ternary logic (DITL)." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.umr.edu/thesis/pdf/Parameswaran_Nair_09007dcc803bc548.pdf.
Повний текст джерелаVita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed November 27, 2007) Includes bibliographical references (p. 55-56).
Beşoğul, Ercan Supervisor :. Dikmen Toker İrem. "Reasons of delays in steel construction projects : an application of a delay analysis methodology \h [Electronic resource] / \c Ercan Beşoğul, Supervisor Assoc. Prof. Dr. İrem Dikmen Toker." Ankara : METU, 2006. http://etd.lib.metu.edu.tr/upload/12607159/index.pdf.
Повний текст джерелаPant, Pankaj. "Automated diagnosis of path delay faults in digital integrated circuits." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/13556.
Повний текст джерелаYu, Bo. "Delay-oriented active queue management in TCP/IP networks." Thesis, Queen Mary, University of London, 2011. http://qmro.qmul.ac.uk/xmlui/handle/123456789/1331.
Повний текст джерелаDavis, Michael Ryan. "Delay-based computing implementation issues in CMOS and nanotechnologies /." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0004825.
Повний текст джерелаAbouchakra, Rabih. "Delay estimation for transform domain acoustical echo cancellation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ37254.pdf.
Повний текст джерелаBoudreau, Daniel. "Joint time delay estimation and adaptive filtering techniques." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=70177.
Повний текст джерелаGaiotti, Serge. "Worst-case delay estimation of digital MOS circuits." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60690.
Повний текст джерелаMenezes, Karol Fidelis 1966. "Signal delay estimates for design of multichip assemblies." Thesis, The University of Arizona, 1992. http://hdl.handle.net/10150/278171.
Повний текст джерелаWang, Michael Chih-Huei 1967. "Delay timing of Sea-of-Wire Array Logic." Thesis, The University of Arizona, 1993. http://hdl.handle.net/10150/291633.
Повний текст джерелаPhillips, Alan Paul 1957. "Phase estimation as applied to group delay measurements." Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/291934.
Повний текст джерелаCuevas, Tello Juan Carlos. "Estimating time delays between irregularly sampled time series." Thesis, University of Birmingham, 2007. http://etheses.bham.ac.uk//id/eprint/88/.
Повний текст джерелаVeeramachaneni, Siva Rama Krishna. "Robust PID control using a Smith predictor for time delay systems." Diss., Wichita State University, 2013. http://hdl.handle.net/10057/10617.
Повний текст джерелаThesis (Ph.D.)--Wichita State University, College of Engineering, Dept. of Electrical Engineering and Computer Science
Baylon, Fuentes Antonio. "Ring topology of an optical phase delayed nonlinear dynamics for neuromorphic photonic computing." Thesis, Besançon, 2016. http://www.theses.fr/2016BESA2047/document.
Повний текст джерелаNowadays most of computers are still based on concepts developed more than 60 years ago by Alan Turing and John von Neumann. However, these digital computers have already begun to reach certain physical limits of their implementation via silicon microelectronics technology (dissipation, speed, integration limits, energy consumption). Alternative approaches, more powerful, more efficient and with less consume of energy, have constituted a major scientific issue for several years. Many of these approaches naturally attempt to get inspiration for the human brain, whose operating principles are still far from being understood. In this line of research, a surprising variation of recurrent neural network (RNN), simpler, and also even sometimes more efficient for features or processing cases, has appeared in the early 2000s, now known as Reservoir Computing (RC), which is currently emerging new brain-inspired computational paradigm. Its structure is quite similar to the classical RNN computing concepts, exhibiting generally three parts: an input layer to inject the information into a nonlinear dynamical system (Write-In), a second layer where the input information is projected in a space of high dimension called dynamical reservoir and an output layer from which the processed information is extracted through a so-called Read-Out function. In RC approach the learning procedure is performed in the output layer only, while the input and reservoir layer are randomly fixed, being the main originality of RC compared to the RNN methods. This feature allows to get more efficiency, rapidity and a learning convergence, as well as to provide an experimental implementation solution. This PhD thesis is dedicated to one of the first photonic RC implementation using telecommunication devices. Our experimental implementation is based on a nonlinear delayed dynamical system, which relies on an electro-optic (EO) oscillator with a differential phase modulation. This EO oscillator was extensively studied in the context of the optical chaos cryptography. Dynamics exhibited by such systems are indeed known to develop complex behaviors in an infinite dimensional phase space, and analogies with space-time dynamics (as neural network ones are a kind of) are also found in the literature. Such peculiarities of delay systems supported the idea of replacing the traditional RNN (usually difficult to design technologically) by a nonlinear EO delay architecture. In order to evaluate the computational power of our RC approach, we implement two spoken digit recognition tests (classification tests) taken from a standard databases in artificial intelligence TI-46 and AURORA-2, obtaining results very close to state-of-the-art performances and establishing state-of-the-art in classification speed. Our photonic RC approach allowed us to process around of 1 million of words per second, improving the information processing speed by a factor ~3
Hamoui, Anas. "Current, delay, and power analysis of submicron CMOS circuits." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0022/MQ50618.pdf.
Повний текст джерелаHafed, Mohamed M. "CMOS inverter current and delay models incorporating interconnect effects." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0025/MQ50614.pdf.
Повний текст джерелаFarajian, Patrick. "Dynamic input rate control in queues with feedback delay." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=26386.
Повний текст джерелаFoodeei, Majid. "Low-delay speech coding at 16 kbs and below." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60717.
Повний текст джерелаWhen compared under similar conditions, the two coders showed comparable performance at 16 kb/s. Issues in backward adaptive linear prediction analysis for both near and far sample redundancy removal such as analysis methods, windowing, ill-conditioning, quantization noise effects and computational complexities are studied.
Kim, Min-Young. "Delay induced instabilities in coupled semiconductor lasers and Mackey-Glass electronic circuits." College Park, Md. : University of Maryland, 2005. http://hdl.handle.net/1903/2722.
Повний текст джерелаThesis research directed by: Physics. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Kadiyala, Murali Krishna. "Model and analysis of burst packet losses and packet delays in IP networks using Markov chains." Diss., Wichita State University, 2011. http://hdl.handle.net/10057/3930.
Повний текст джерелаDissertation(Ph.D.)--Wichita State University, College of Engineering, Dept. of Electrical Engineering and Computer Science
Haurani, Ammar. "Robust control of uncertain time-delay systems." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=84257.
Повний текст джерелаIn the context of the design method based on transfer functions, the problem of Hinfinity output feedback design for a class of uncertain linear continuous-time or discrete-time systems, with delayed states and/or outputs (only for the continuous-time case), and norm-bounded parametric uncertainties is considered. The objective is to design a linear output feedback controller such that, for the unknown state and output time-delays and all admissible norm-bounded parameter uncertainties, the feedback system remains robustly stable and the transfer function from the exogenous disturbances to the state-error outputs meets the prescribed Hinfinity norm upper-bound constraint. The output feedback structure does not depend on the time-delay. The conditions for the existence of the desired robust Hinfinity output feedback and the analytical expression of these controllers, are then characterized in terms of matrix Riccati-type inequalities. In the continuous-time context, both the time-invariant and the time-varying cases are treated. Finally, examples are presented to demonstrate the validity and the solvability of the proposed design methods.
Still in the same context, the state-feedback robust stabilization problem for neutral systems with time-varying delays and saturating actuators is addressed. The systems considered are continuous-time, with parametric uncertainties entering all the matrices in the system representation. The model used for the representation of actuator saturations is that of differential inclusions. A saturating control law is designed and a region of initial conditions is specified within which local asymptotic stability of the closed-loop system is ensured.
Finally, the robust output-feedback stabilization problem for state-delayed systems with time-varying delays and saturating actuators is addressed. The systems considered are again continuous-time, with parametric uncertainties entering all the matrices in the system representation. Two models are used for the representation of actuator saturations: sector modeling and differential inclusions. Saturating control laws are designed, and in the case of differential inclusions, a region of initial conditions is specified within which local asymptotic stability of the closed-loop system is ensured. (Abstract shortened by UMI.)
Grundy, Andrew. "Congestion control framework for delay-tolerant communications." Thesis, University of Nottingham, 2012. http://eprints.nottingham.ac.uk/12558/.
Повний текст джерелаSpasojevic, Mina. "Nonlinear optical signal processing and tunable optical delays in silicon-on-insulator waveguides." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=119660.
Повний текст джерелаL'augmentation incessante de la demande pour de larges bandes passantes crée de grandes tensions sur les technologies de communications existantes. Cela met en évidence le besoin d'améliorer la capacité et l'extensibilité des systèmes de transmission existants et futurs. Cette question peut être résolue, entre autres, par l'exploration des capacités de formats de modulation différents. Cette thèse examine un schéma de (dé)multiplexage optique temporel (OTDM) et présente une plateforme pour la mise en place d'un système pour le traitement de signaux exclusivement optiques sur silicium sur isolant (SOI) qui s'appuie sur le démultiplexage OTDM. Le démultiplexage OTDM et les délais optiques réglables, tous deux implémentés sur des dispositifs en silicium à l'échelle nanométrique, sont démontrés avec succès. Le démultiplexage OTDM est effectuée par l'exploitation de la non-linéarité des guides d'onde sur silicium. Cette technique emploie le phénomène de mélange à quatre ondes (FWM) choisi pour son potentiel pour les très hautes fréquences de données grâce à sa nature instantanée en plus de posséder l'avantage d'être transparent aux formats de modulation. Cette thèse démontre que le démultiplexage OTDM exclusivement optique peut être effectué en deux étapes, la production de ligne à retard ajustable en continue suivit par un procédé de démultiplexage, tous deux implémentés dans le même guide d'onde sur silicium. Un démultiplexage de 40 Gb/s à 10 Gb/s résultant en quatre canaux démultiplexés sans erreur est démontré avec succès. Pour une intégration plus poussée du procédé de démultiplexage, cette thèse examine la possibilité de créer un délai optique ajustable dans les guides d'onde sur silicium. Deux approches pour la mise en œuvre de réseaux sur les parois d'un guide d'onde sont démontrées: une série de réseaux de Bragg et des réseaux de Bragg chirpés. Les deux approches ont été fabriquées et caractérisées et démontrent des délais relativement larges (jusqu'à 65 ps) par étapes discontinues (de 15 ps à 32 ps) sur une bande passante large (de 35 nm à 70 nm). Ces approches doivent cependant être davantage optimisées. Le traitement de signaux exclusivement optique et les dispositifs optiques présentés dans cette thèse fournissent les étapes et les informations nécessaires qui pourraient mener à un démultiplexeur OTDM sur silicium complètement intégré.
Ospanov, Asset. "DELAY DIFFERENTIAL EQUATIONS AND THEIR APPLICATION TO MICRO ELECTRO MECHANICAL SYSTEMS." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5674.
Повний текст джерелаHuo, Jiale. "On queued testing and its application to delay-insensitive systems." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=19649.
Повний текст джерелаVonFange, Ross. "A device for synchronous Ethernet packet delay." Thesis, Manhattan, Kan. : Kansas State University, 2009. http://hdl.handle.net/2097/1490.
Повний текст джерелаThomas, Lee Davis. "Effects of d-amphetamine on signaled and unsignaled delays to reinforcement." View electronic thesis (PDF), 2009. http://dl.uncw.edu/etd/2009-1/thomasl/leethomas.pdf.
Повний текст джерелаSoleymani, S. M. Ali. "Design and analysis of micro-mirror based tunable optical delay line." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81571.
Повний текст джерелаIn this thesis, design and performance analysis of a tunable optical delay line which employs pop-up MEMS micro-mirrors have been described. The delay paths which their lengths are in binary fashion are free-space based delay lines. Micro-mirrors operate as a switch to redirect the light through delay paths. One of the main characteristic of this design is to provide constant optical power loss for different delay times. Computer simulations have been shown to evaluate the performance of the system to different sources of misalignments.
The result of simulations suggests using correction mirrors in order to decrease the optical power loss due to misalignment. It has been also concluded that improvement of pop-up micro-mirrors as a main source of misalignment, will alleviate the performance remarkably.
Milosavljevic, Ivana. "Power Electronics System Communications." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/31218.
Повний текст джерелаMaster of Science
Saad, Tarek W. "Support of delay-sensitive applications over MPLS and differentiated services enabled networks." Thesis, University of Ottawa (Canada), 2002. http://hdl.handle.net/10393/6218.
Повний текст джерелаZhang, Dan. "Impulse noise detection techniques for retransmission to reduce delay in DSL systems." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=107853.
Повний текст джерелаPour protéger les systèmes de ligne d'abonné numérique (DSL) contre le bruit impulsif (IN), les normes conventionnelles de DSL sont typiquement déployées avec de l'entrelacement combiné au codage Reed-Solomon (RS). Cependant, l'entrelacement introduit un long retard. Afin de réduire ce retard dans les systèmes conventionnels de DSL qui sont corrompus par l'IN, une retransmission peut être utilisée au lieu de l'entrelacement. Pour une retransmission efficace, une détection fiable de l'altération causée par l'IN est nécessaire. Dans cette thèse, nous considérons trois approches de détection. La première est basée sur le statut du décodage RS puisque le décodeur détecte le nombre d'erreurs corrigées ou bien signale qu'il a échoué quand le nombre d'erreurs dépassent sa capacité de correction. Une retransmission est nécessaire quand le mot codé transmis ne peut pas être décodé. La deuxième méthode emploie la méthode des distances carrées dans laquelle les suppressions sont marquées pour les échantillons reçus non fiables et une retransmission est émise quand le nombre d'échantillons supprimés dépasse un certain seuil. Enfin, la troisième méthode est de profiter des tonalités inutilisées dans les systèmes de DSL afin de détecter si l'IN est présent. Pour toutes les approches ci-dessus, nous analysons le retard moyen et le taux d'erreur sur les bits (BER) et nous fournissons des résultats de simulation pour valider l'analyse. Il est constaté que l'approche du statut de décodage peut indiquer de manière fiable les signaux reçus corrompus par IN et nous le considérons comme une manière efficace pour corriger les symboles et pour détecter les erreurs puisque la probabilité de mauvais décodage pour le symbole reçu est très basse. Dans la voie sujette à évanouissement progressif de fréquences avec la présence de bruit électrique impulsif répétitif (REIN), les résultats numériques utilisant des paramètres différents tels que de diverses réponses de voies de transmission et de diverses puissances du IN prouvent que la retransmission offre un court retard tout en évitant efficacement les erreurs de transmission. Spécifiquement, avec l'approche du statut de décodage, l'erreur provoquée par le REIN peut complètement être évitée avec un délai de retransmission moyennant 0.029ms et un retard aller-retour maximale est de 0.75ms.
Shallwani, Aziz. "An adaptive playout algorithm with delay spike detection for real-time VoIP /." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80143.
Повний текст джерелаIn this work, an adaptive playout algorithm based on the normalized least mean square algorithm, is improved by introducing a spike-detection mode to rapidly adjust to delay spikes. Simulations on Internet traces show that the enhanced bi-modal playout algorithm improves performance by reducing both the average delay and the loss rate as compared to the original algorithm.