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Dissertations / Theses on the topic 'Timber decay'

Author: Grafiati

Published: 4 June 2021

Last updated: 21 February 2023

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1

Le, Poidevin Janine. "Timber permeability : significance for joinery decay." Thesis, Imperial College London, 1986. http://hdl.handle.net/10044/1/38083.

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2

Lee, Hyun-Mi. "Aspects of wood decay and preservation of timber." Thesis, Liverpool John Moores University, 2009. http://researchonline.ljmu.ac.uk/5941/.

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A number of species of wood decay fungi important for the damage they cause to timber and timber products in Korea were cultured. Trametes versicolor, which is one of the most important, was also cultured from a collection made in the UK and likewise the ascomycete Daldinia concentica was obtained for comparative studies. In the initial testing of the effectiveness of the two wood preservatives, ammoniacal copper quaternary (ACQ) and copper azole (CuAz) preserve injected blocks of Japanese Red Pine and Yellow Poplar were inoculated with T versicolor, Pleurotus ostreatus and D. concentrica. Wei

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3

McGeachie, M. T., University of Western Sydney, College of Law and Business, and of Construction Property and Planning School. "Characterisation of the Sydney region in relation to corrosion, timber decay risk factors and the corrosion of nails in timber in covered conditions." THESIS_CLAB_CPP_McGeachie_M.xml, 2001. http://handle.uws.edu.au:8081/1959.7/491.

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The aim of the study was to characterise the environment in the Sydney region in respect of atmospheric corrosivity, timber decay risk factors and the corrosion of nails in timber in covered conditions. The study reviewed contemporary research in this field, particularly in Australia, developing an understanding of the durability failure mechanisms for timber and nails in timber. The study looked at the effects of climatic aspects, pollutants, corrosion on timber decay risk factors. The study found that the levels of risk in terms of timber degradation, corrosion and nail corrosion were greate

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4

Vigrow, Anne. "Molecular analysis of the dry rot fungus Serpula lacrymans." Thesis, University of Abertay Dundee, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306791.

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5

McGeachie, Mark Thomas. "Characterisation of the Sydney region in relation to corrosion, timber decay risk factors and the corrosion of nails in timber in covered conditions /." View thesis View thesis, 2001. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030326.082457/index.html.

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6

Score, Alan James. "Biological control of the dry rot fungus Serpula lacrymans." Thesis, University of Abertay Dundee, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264798.

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7

Moreira-Munoz, Simon. "Timber supply and economic impact of mountain pine beetle salvage strategies." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/697.

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To address the scale mountain pine beetle (MPB) outbreak in British Columbia, salvage has become fully integrated with timber supply strategies. The objective of this thesis is to assess the economic impact of different salvage strategies depending on different attack levels, decay rates, and stakeholder discount rates. The study area is located in N.E. British Columbia where the MPB has not yet reached its peak and where susceptible to attack stands account for 40% of the area. Salvage strategies were modelled with a timber supply model (Woodstock) which uses a linear programming type II opti

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8

Kumi-Woode, Benjamin G. "Natural decay resistance of some Ghanian timbers and wood decay hazard potential for Ghana." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/MQ33402.pdf.

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9

Brown, Heather. "Biological control of wood decay in ground contact timbers." Thesis, Abertay University, 2002. https://rke.abertay.ac.uk/en/studentTheses/404b141f-ed6c-4363-a96a-27ba3ab1f68a.

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Wood placed in ground contact situations is susceptible to attack by a wide range of soil micro-organisms which degrade the wood structure, causing significant deterioration of the mechanical properties of the timber such as strength and elasticity. Chemical preservatives such as CCA (copper-chrome-arsenic) and CCB (copper-chrome-boron) are currently used to prevent the decay of wood exposed to biodeteriogens. However, increasing concerns regarding the long-term environmental effects of the toxic chemicals applied to ground contact timbers has resulted in the investigation and development of a

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10

Mouzouras, R. "Microbiological aspects of stored timbers from the Mary Rose and the decay of wood by marine fungi." Thesis, University of Portsmouth, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376466.

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11

Danko, V. A., P. E. Shepeliavyi, K. V. Michailovska, and I. Z. Indutnyi. "Absorption Cross Section and Photoluminescence Lifetime of Silicon-Based Light-Emitting nc-Si-SiOx Structures." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/35011.

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The spectral dependence of the photoluminescence (PL) decay kinetics at room temperature have been studied in porous nc-Si-SiOx nanostructures. Investigated samples were obtained by oblique evaporation of SiO with following annealing at 975 C in vacuum and treating in the HF vapor at 50 C. PL decay in these structures described by a stretched exponential and the average lifetime of the PL decrease exponentially with increasing energy of photons. PL lifetime values is in microsecond range that point out on phonon participation in radiative recombination. Dispersion parameter do not depend

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12

Reed, Alan Thomas. "Decay studies of neutron-rich nuclei." Thesis, University of Liverpool, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367175.

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13

Ferguson, Colin. "Mass modelling in X-/#gamma#-ray astronomy." Thesis, University of Southampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327364.

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14

Zhang, Nien-fan. "Estimating partial group delay." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/74721.

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Partial group delay is a spectral parameter, which measures the time lag between two time series in a system after the spurious effects of the other series in the system have been eliminated. For weakly-stationary processes, estimators for partial group delay are proposed based on indirect and direct approaches. Conditions for weak consistency and asymptotic normality of the proposed estimators are obtained. Applications to a multiple test of partial group delay are investigated. The time lag interpretation of partial group delay is justified, which provides insight into the nature of line

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15

Swaminathan, Prasanna V. "Measurement of Charge Storage Decay Time and Resistivity of Spacecraft Insulators." DigitalCommons@USU, 2004. https://digitalcommons.usu.edu/etd/2094.

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Insulators used in the construction of spacecraft are irradiated with high-energy electrons in the space environment and this sometimes causes the insulators to charge to very high voltages. Such charged insulators can generate spontaneous electric partial-discharge pulses of the order of mA to tens of A. These pulses sometimes last enough time to destroy the expensive micro-circuitry present in the spacecraft. In evaluating the threat to the spacecraft due to these discharges, calculation of the resistivity becomes a critical parameter since it determines how accumulated charge will distribut

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16

Bai, Yuqiong. "ANALYSIS OF AIRCRAFT ARRIVAL DELAY AND AIRPORT ON-TIME PERFORMANCE." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2573.

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In this research, statistical models of airport delay and single flight arrival delay were developed. The models use the Airline On-Time Performance Data from the Federal Aviation Administration (FAA) and the Surface Airways Weather Data from the National Climatic Data Center (NCDC). Multivariate regression, ANOVA, neural networks and logistic regression were used to detect the pattern of airport delay, aircraft arrival delay and schedule performance. These models are then integrated in the form of a system for aircraft delay analysis and airport delay assessment. The assessment of an airport&

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17

Mumm, Hans Pieter. "A test of time reversal violation in neutron beta decay /." Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/9802.

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18

Pietarila, Kristel M. Fales Roger. "Developing and automating time delay system stability analysis of dynamic systems using the Matrix Lambert W (MLW) function method." Diss., Columbia, Mo. : University of Missouri--Columbia, 2009. http://hdl.handle.net/10355/6180.

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Title from PDF of title page (University of Missouri--Columbia, viewed on Feb 16, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Dissertation advisor: Dr. Roger Fales. Vita. Includes bibliographical references.

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19

Du, Baozhu, and 杜宝珠. "Stability analysis and controller synthesis of continous-time linear time-delay systems." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B44765186.

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20

Corvi, Andrea P. "Subjective Time Perception Predicts Delay of Gratification." Case Western Reserve University School of Graduate Studies / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=case1291765358.

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21

Zinck, Melissa M. "A COMPARISON STUDY OF CONSTANT TIME DELAY AND PROGRESSIVE TIME DELAY IN THE ACQUISITION OF ACADEMIC CONTENT FOR STUDENTS WITH INTELLECTUAL DISABILITIES." UKnowledge, 2018. https://uknowledge.uky.edu/edsrc_etds/59.

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Constant time delay (CTD) and progressive time delay (PTD) are both evidence-based practices used to teach students with intellectual disability (ID). The prompt delay strategies have been used for instruction with academics, social, vocational, and communication skills. There is limited research regarding the differential effectiveness of the time delay variations for teaching academic content to students with ID. The present study compares the effects of CTD and PTD in the acquisition of academic content with four students with ID. An adapted alternating treatments design was used to compare

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22

嚴利興 and Li-hing Yim. "Some stability results for time-delay control problems." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31225482.

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23

Yim, Li-hing. "Some stability results for time-delay control problems." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B22926094.

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24

Bevan, Matthew Gareth. "Investigating differences in the decay of divorce-induced residential mobility across gender and urbanisation." Thesis, Malmö universitet, Fakulteten för kultur och samhälle (KS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-21258.

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Divorce is a life course event that triggers deviant, negative residential moves that symbolises the antithesis of climbing the traditional housing ladder, and sets individuals on an altered housing trajectory, typically associated with long-term instability compared to married counterparts. Studies have revealed that long-term instability associated with divorce is commonly connected to an increased probability of moving out of owner occupation that is greater and persists longer for women than men. Similarly, studies examining the immediate effects of divorce typically identify that women ha

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25

Mitchell, Richard James. "Multi-microprocessor control of processes with pure time delay." Thesis, University of Reading, 1987. http://centaur.reading.ac.uk/18826/.

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26

Eriksson, Daniel. "How to implement Bounded-Delay replication in DeeDS." Thesis, University of Skövde, Department of Computer Science, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-646.

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<p>In a distributed database system, pessimistic concurrency control is often used to ensure consistency which implies that the execution time of a transaction is not predictable. The execution time of a transaction is not dependent on the local transactions only, but on every transaction in the system.</p><p>In real-time database systems it is important that transactions are predictable. One way to make transactions predictable is to use eventual consistency where transactions commit locally before they are propagated to other nodes in the system. It is then possible to get predictable transa

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27

Sidhu, Bobjot Singh. "Exploring Data Driven Models of Transit Travel Time and Delay." DigitalCommons@CalPoly, 2016. https://digitalcommons.calpoly.edu/theses/1601.

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Transit travel time and operating speed influence service attractiveness, operating cost, system efficiency and sustainability. The Tri-County Metropolitan Transportation District of Oregon (TriMet) provides public transportation service in the tri-county Portland metropolitan area. TriMet was one of the first transit agencies to implement a Bus Dispatch System (BDS) as a part of its overall service control and management system. TriMet has had the foresight to fully archive the BDS automatic vehicle location and automatic passenger count data for all bus trips at the stop level since 1997. Mo

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28

Lorenz, Robert. "Weak approxamation of stochastic delay." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2006. http://dx.doi.org/10.18452/15488.

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Wir betrachten die stochastische Differentialgleichung mit Gedächtnis (SDDE) mit Gedächtnislänge r dX(t) = b(X(u);u in [t-r,t])dt + sigma(X(u);u in [t-r,t])dB(t) mit eindeutiger schwacher Lösung. Dabei ist B eine Brownsche Bewegung, b and sigma sind stetige, lokal beschränkte Funktionen mit Definitionsbereich C[-r,0], und X(u);u in [t-r,t] bezeichnet das Segment der Werte von X(u) für Zeitpunkte u im Intervall [t,t-r]. Unser Ziel ist eine Folge von diskreten Zeitreihen Xh höherer Ordung zu konstruieren, so dass mit h gegen 0 die Zeitreihen Xh schwach gegen die Lösung X der stoch

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29

Wang, Xiang, and 王翔. "Model order reduction of time-delay systems with variational analysis." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B46604236.

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30

Wang, Shengquan. "Utilization-based delay guarantee techniques and their applications." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1078.

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31

Li, Lok-man Jennifer. "Schedule delay of work trips in Hong Kong an empirical analysis /." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B40988041.

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32

Zhou, Ziqian. "Statistical inference of distributed delay differential equations." Diss., University of Iowa, 2016. https://ir.uiowa.edu/etd/2173.

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In this study, we aim to develop new likelihood based method for estimating parameters of ordinary differential equations (ODEs) / delay differential equations (DDEs) models. Those models are important for modeling dynamical processes that are described in terms of their derivatives and are widely used in many fields of modern science, such as physics, chemistry, biology and social sciences. We use our new approach to study a distributed delay differential equation model, the statistical inference of which has

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33

Lu, Hao. "Approximation and applications of distributed delay." Phd thesis, INSA de Lyon, 2013. http://tel.archives-ouvertes.fr/tel-00961273.

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A distributed delay is a linear input-output operators and appears in many control problems. We investigate distributed delay and its applications. After introducing the definition and the main properties of the distributed delay, the numerical implementation problem of distributed delays is analyzed and a general method for its approximation is given. Then three applications are focused on where distributed delay appears. The first application is the stable inversion and model matching. A new class of stable inversion and model matching problem for finite dimensional linear time-invariant sys

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34

Qiu, Jianbin. "New approaches to robust filtering design for uncertain dynamical systems with time delay /." access full-text access abstract and table of contents, 2009. http://libweb.cityu.edu.hk/cgi-bin/ezdb/thesis.pl?phd-meem-b30082626f.pdf.

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Thesis (Ph.D.)--City University of Hong Kong, 2009.<br>"Submitted to Department of Manufacturing Engineering and Engineering Management in partial fulfillment of the requirements for the degree of Doctor of Philosophy." Includes bibliographical references (leaves [169]-205)

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35

Li, Yulan. "PREDICTIVE CONTROL FOR DYNAMIC SYSTEMS TO TRACK UNKNOWN INPUT IN THE PRESENCE OF TIME DELAY." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4220.

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This study investigated a tracking system to trace unknown signal in the presence oftime delay. A predictive control method is proposed in order to compensate the time delay. Root locus method is applied when designing the controller, parameter setting is carried out through error and trail technique in w-plane. State space equation is derived for the system, with special state chose of tracking error. To analyze the asymptotic stability of the proposed predictive control system, the Lyapunov function is constructed. It is shown that the designed system is asymptotically stable when input sign

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36

Zhang, Liqian. "Optimal H2 model reduction for dynamic systems /." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21841548.

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37

Kalavagunta, Sushma. "Computational algorithms for stability analysis of linear systems with time-delay /." free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p1418036.

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38

Chifan, Iustina. "Hopf Bifurcation Analysis for a Variant of the Logistic Equation with Delays." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/40504.

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This thesis contains some results on the behavior of a delay differential equation (DDE) with two delays, at a Hopf bifurcation, for the nonzero equilibrium, using the growth rate, r, as bifurcation parameter. This DDE is a model for population growth, incorporating a maturation delay, and a second delay in the harvesting term. Considering a Taylor expansion of the non-dimensionalized model, we find a region of stability for the nonzero equilibrium, after which we find a pair of ODEs which help define the flow on the center manifold. We then find an expression for the first Lypapunov coefficie

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39

Xu, Hao. "Synthesis and design of PID controllers." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1480.

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controllers for discrete-time systems and time-delayed systems. By using bilinear transformation and orthogonal transformation, earlier research results obtained in the continuous-time case are extended to discrete-time situation. The complete set of stabilizing PID controllers for the discrete-time systems is thus obtained. Moreover, this set remains to be a union of convex sets when one particular parameter is fixed. Thus a method to design robust and non-fragile digital PID controllers is proposed by following a similar design procedure for the continuous-time systems. In order to find the

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40

Chen, Yu Ling. "The Effects of Behavioral Skills Training on a Mother's Implementation ofConstant Time Delay for her Children with Autism and Developmental Delay." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1555092052561576.

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41

Alwan, Mohamad. "Stability of Hybrid Singularly Perturbed Systems with Time Delay." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/2934.

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Hybrid singularly perturbed systems (SPSs) with time delay are considered and exponential stability of these systems is investigated. This work mainly covers switched and impulsive switched delay SPSs . Multiple Lyapunov functions technique as a tool is applied to these systems. Dwell and average dwell time approaches are used to organize the switching between subsystems (modes) so that the hybrid system is stable. Systems with all stable modes are first discussed and, after developing lemmas to ensure existence of growth rates of unstable modes, these systems are then extended to in

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42

Nelson, Tom. "ALAMOUTI SPACE-TIME CODING FOR QPSK WITH DELAY DIFFERENTIAL." International Foundation for Telemetering, 2003. http://hdl.handle.net/10150/607483.

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International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>Space-time coding (STC) for QPSK where the transmitted signals are received with the same delay is well known. This paper examines the case where the transmitted signals are received with a nonnegligible delay differential when the Alamouti 2x1 STC is used. Such a differential can be caused by a large spacing of the transmit antennas. In this paper, an expression for the received signal with a delay differential is derived and a decoding algorithm for that signal

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43

Olsson, Mattias. "Contributions to Frequency Offset and Time Delay Estimation." Licentiate thesis, Linköping : Linköping University, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-6436.

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44

McDaniel, Austin James. "The Effects of Time Delay on Noisy Systems." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/556867.

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We consider a general stochastic differential delay equation (SDDE) with multiplicative colored noise. We study the limit as the time delays and the correlation times of the noises go to zero at the same rate. First, we derive the limiting equation for the equation obtained by Taylor expanding the SDDE to first order in the time delays. The limiting equation contains a noise-induced drift term that depends on the ratios of the time delays to the correlation times of the noises. We prove that, under appropriate assumptions, the solution of the equation obtained by the Taylor expansion converges

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45

Olsson, Mattias. "Contributions to Delay, Gain, and Offset Estimation." Doctoral thesis, Linköping : Department of Electrical Engineering, Linköping University, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11826.

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46

Imaida, Takashi. "STUDIES ON BILATERAL CONTROL OF TELEOPERATOR UNDER TIME DELAY." 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/200503.

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47

Böhme, Christiane. "Decay rates and scattering states for wave models with time-dependent potential." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2011. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-70939.

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Viele Problemstellungen der Naturwissenschaften führen zur Betrachtung von nichtlinearen Wellengleichungen. Dabei ist von großem Interesse, ob zu vorgegebenen kleinen Daten Lösungen eindeutig existieren und ob diese stetig von den Daten abhängen. Hilfsmittel für diese Probleme sind Aussagen über lineare Wellengleichungen. In der vorliegenden Arbeit werden lineare Klein-Gordon Gleichungen, also Wellengleichungen mit Potentialterm, mit zeitabhängiger Masse bzgl. des Verhaltens ihrer Lösungen untersucht. Von speziellem Interesse sind Resultate mit Bezug auf verallgemeinerte Energieerhaltung und s

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48

Gunawardana, Upul, and Kurt Kosbar. "OPTIMIZATION OF REFERENCE WAVEFORM FILTERS IN COHERENT DELAY LOCKED LOOPS." International Foundation for Telemetering, 1999. http://hdl.handle.net/10150/606804.

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International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>In this paper, a new coherent correlation-loop architecture for tracking direct-sequence spread-spectrum signals is proposed. In the proposed correlation loop model, the mean-square tracking error is minimized by varying the cross-correlation function between the received signal and the locally generated signal. The locally generated signal is produced by passing a replica of the transmitted signal through a linear time-invariant filter, which is termed the V

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49

Pall, Goutom K. "Causes of delay in power transmission projects in Bangladesh." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/211479/1/Goutom_Pall_Thesis.pdf.

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Power transmission (PT) sits at the heart of the electric power sector linking power generation and power distribution to contribute to global economic growth. This study presents the first empirical study on causes of delays in PT projects to identify the critical delay attributes with a recommendation to minimize the delay. This research determines the overall ranking of the delay factors with the top-ranked factors being right of way problems of transmission line (TL), frequent changes in TL routes, and accessibility to the TL tower locations. Finally, recommendations are made to help minim

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50

Li, Lok-man Jennifer, and 李諾文. "Schedule delay of work trips in Hong Kong: anempirical analysis." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40988041.

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