Dissertations / Theses: 'TIMED BEHAVIOR'

1

Maier, Alexander [Verfasser]. "Identification of timed behavior models for diagnosis in production systems / Alexander Maier." Paderborn : Universitätsbibliothek, 2015. http://d-nb.info/1068255609/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Amer, Ahmed. "Statistical and Behavioral Modeling of Driver Behavior on Signalized Intersection Approaches." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/77995.

Full text

Abstract:

The onset of a yellow indication is typically associated with the risk of vehicle crashes resulting from dilemma-zone and red-light-running problems. Such risk of vehicle crashes is greater for high-speed signalized intersection approaches. The research presented in this dissertation develops statistical as well as behavioral frameworks for modeling driver behavior while approaching high-speed signalized intersection approaches at the onset of a yellow indication. The analysis in this dissertation utilizes two sources of data. The main source is a new dataset that was collected as part of this research effort during the summer of 2008. This experiment includes two instructed speeds; 72.4 km/h (45 mph) with 1727 approaching trials (687 running and 1040 stopping), and 88.5 km/h (55 mph) with 1727 approaching trials (625 running and 1102 stopping). The complementary source is an existing dataset that was collected earlier in the spring of 2005 on the Virginia Smart Road facility. This dataset includes a total of 1186 yellow approaching trials (441 running and 745 stopping). The adopted analysis approach comprises four major parts that fulfill the objectives of this dissertation. The first part is concerned with the characterization of different driver behavioral attributes, including driver yellow/red light running behavior, driver stop-run decisions, driver perception-reaction times (PRT), and driver deceleration levels. The characterization of these attributes involves analysis of variance (ANOVA) and frequency distribution analyses, as well as the calibration of statistical models. The second part of the dissertation introduces a novel approach for computing the clearance interval duration that explicitly accounts for the reliability of the design (probability that drivers do not encounter a dilemma zone). Lookup tables are developed to assist practitioners in the design of yellow timings that reflects the stochastic nature of driver PRT and deceleration levels. An extension of the proposed approach is presented that can be integrated with the IntelliDriveSM initiative. Furthermore, the third part of the dissertation develops an agent-based Bayesian statistics approach to capture the stochastic nature of the driver stop-run decision. The Bayesian model parameters are calibrated using the Markov Chain Monte Carlo (MCMC) slice procedure implemented within the MATLAB® software. In addition, two procedures for the Bayesian model application are illustrated; namely Cascaded regression and Cholesky decomposition. Both procedures are demonstrated to produce replications that are consistent with the Bayesian model realizations, and capture the parameter correlations without the need to store the set of parameter realizations. The proposed Bayesian approach is ideal for modeling multi-agent systems in which each agent has its own unique set of parameters. Finally, the fourth part of the dissertation introduces and validates a state-of-the-art behavioral modeling framework that can be used as a tool to simulate driver behavior after the onset of a yellow indication until he/she reaches the intersection stop line. The behavioral model is able to track dilemma zone drivers and update the information available to them every time step until they reach a final decision. It is anticipated that this behavioral model will be implemented in microscopic traffic simulation software to enhance the modeling of driver behavior as they approach signalized intersections.
Ph. D.

APA, Harvard, Vancouver, ISO, and other styles

3

Edmiston, William Jr. "The Effects of Time-Compression on Recall Utilizing a Videotape Presentation." TopSCHOLAR®, 1986. https://digitalcommons.wku.edu/theses/2289.

Full text

Abstract:

Three population samples of college students were found to be similar on two stratifying variables, general intelligence and knowledge of conditioning principles, before viewing a time-compressed or non-compressed videotape presentation. The amount of unprompted information recalled did not differ significantly between the time-compressed and non-compressed treatment conditions. Additionally, neither treatment condition differed significantly on a multiple-choice posttest, although both groups did differ significantly from a control group that did not view the videotape. No significant difference was found between the time-compressed and non-compressed groups on their ratings of Quality of Narrator, Interest Level of Topic, and Overall Quality of Videotape Presentation. The time-compressed group rated their presentation as significantly faster than the non-compressed group.

APA, Harvard, Vancouver, ISO, and other styles

4

Daugherty, James R. "Time perception’s effect on individual differences and behavior: the mediating role of impulsivity on the relationship between time perception and intertemporal health behaviors." Diss., Kansas State University, 2011. http://hdl.handle.net/2097/9164.

Full text

Abstract:

Doctor of Philosophy
Department of Psychology
Gary L. Brase
This research tested a general mediation model which proposes that individual differences (e.g., impulsivity, delay discounting, and time orientation) mediate the relationship between time perception (one’s subjective experience of the passage of time relative to actual time) and intertemporal behavior (decision-making involving tradeoffs between costs and rewards in both the present and the future). Study I did not find evidence to support the general mediation model and found that time perception was only weakly correlated with individual differences and intertemporal behavior (average r = .06) . Study II found tentative support for the proposed mediation model: individual differences in impulsivity fully mediated the relationship between time perception and intertemporal behavior in 4 separate mediation models. Three additional mediation models met the assumptions of mediation, demonstrating indirect effects significantly different from zero, but did not fully mediate the relationship between time perception and intertemporal behavior. In general, the mediation models explored in Study II (both fully and partially mediated) suggest that self-report impulsivity mediates the relationship between time perception and intertemporal health behaviors, like hours of sleep slept per night, sociosexual orientation, and frequency of eating breakfast. The findings from Study II suggest that how time is perceived influences intertemporal behavior indirectly by influencing impulsivity. Guidelines to aid future research linking time perception to individual differences and intertemporal behavior are provided.

APA, Harvard, Vancouver, ISO, and other styles

5

Dascaliuc, Radu. "Backward time behavior of dissipative PDE." Texas A&M University, 2005. http://hdl.handle.net/1969.1/4940.

Full text

Abstract:

We study behavior for negative times t of the 2D periodic Navier-Stokes equations and Burgers' original model for turbulence. Both systems are proved to have rich sets of solutions that exist for all t - R and increase exponentially as t -> -(Infinity) However, our study shows that the behavior of these solutions as well as the geometrical structure of the sets of their initial data are very different. As a consequence, Burgers original model for turbulence becomes the first known dissipative system that despite possessing a rich set of backward-time exponentially growing solutions, does not display any similarities, as t -> -(Infinity), to the linear case.

APA, Harvard, Vancouver, ISO, and other styles

6

Ibrahim, Mohamed El Hady M. "An Examination of an Integrative Expectancy Model for Auditors' Performance Behaviors Under Time Budget Pressure." Thesis, North Texas State University, 1985. https://digital.library.unt.edu/ark:/67531/metadc331382/.

Full text

Abstract:

In recent years there has been a growing use of expectancy theory to study motivation and performance in accounting environments. Such research efforts have resulted in reporting some inconsistent findings and low explanatory power for the expectancy model. In an attempt to increase the explanatory power of the model, several researchers have suggested the inclusion of nonexpectancy components in the model. This research was undertaken to develop an integrative expectancy model by incorporating some elements of goal setting theory and attribution theory into the expectancy formulation. The study was also designed to provide empirical evidence on the validity of a within-subject design of the proposed model through an empirical investigation of auditors* performance behaviors to meet budgeted time in public accounting firms. Alternative performance behaviors to meet budgeted time were modeled in three choice processes. The first deals with auditors choice to report unfiltered time (i.e. report actual time worked) as opposed to filtered time worked (i.e., underreporting and sign-off behaviors). The second process deals with auditors' choice to engage in underreporting as opposed to sign-off behaviors. The third process deals with auditors' choice to reduce or overrule some audit procedures based on professional judgment. Data were collected using an anonymous questionnaire from a sample of auditors at the staff, senior, and supervisory staff levels of fifty-three national, regional and local accounting firms in the Dallas- Fort Worth area. Data received from 671 participants were analyzed using th Automatic Interaction Detector (AID3) and multiple regression techniques. The findings of this research support the expectancy formulation and its relevancy to the accounting environments. However, five nonexpectancy variables were found to have significant relationships with auditors' choice processes to meet budgeted time. These five variables were supervision, budget feasibility, length of experience, organizational level and firm size classification.

APA, Harvard, Vancouver, ISO, and other styles

7

Heacock, Jessica Lynn. "The Effects of a Modified Time Delay Procedure on Intraverbal Responding." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1374194687.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Parthey, Daniel. "Analyzing Real-Time Behavior of Flash Memories." Master's thesis, Universitätsbibliothek Chemnitz, 2007. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200700459.

Full text

Abstract:

Flash memories are used as the main storage in many portable consumer electronic devices because they are more robust than hard drives. This document gives an overview of existing consumer flash memory technologies which are mostly removable flash memory cards. It discusses to which degree consumer flash devices are suitable for real-time systems and provides a detailed timing analysis of some consumer flash devices. Further, it describes methods to analyze mount times, access performance and timing predictability of flash memories. Important factors which influence access timings of flash memories are pointed out and different flash file systems are evaluated with regard to their suitability for real-time systems. Some remaining problems of existing flash file system implementations concerning real-time use are discussed.

APA, Harvard, Vancouver, ISO, and other styles

9

Shams, Mohamed Khalil. "Time-dependent behavior of high-performance concrete." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/20682.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Hallberg, Daniel Klevmarken Anders Johansson Per. "Essays on household behavior and time-use /." Uppsala : Dept. of Economics, Uppsala University, 2002. http://www.loc.gov/catdir/toc/fy042/2003504326.html.

Full text

Abstract:

Thesis (doctoral)--Uppsala universitet, 2002.
"Essay 2 (with Anders Klevmarken) ... Essay 4 (with Per Johansson)"--Abstract. Added t.p. with thesis statement inserted. Includes bibliographical references.

APA, Harvard, Vancouver, ISO, and other styles

11

Mata, Antonia V. "Do Mothers Have A More Difficult Time Coping With Their Child's Challenging Behaviors When They Were Using Drugs, Than They Do When They Are Sober." CSUSB ScholarWorks, 2016. https://scholarworks.lib.csusb.edu/etd/288.

Full text

Abstract:

The research focus of this study hoped to answer: “Do mothers have a more difficult time coping with their child’s challenging behaviors when they were using drugs, than they do when they are sober?” Mothers using street drugs may have challenges with their children after using drugs, whether illegal or legal (like alcohol or methadone). Mothers may have challenges during drug use with these children, but are the challenges the same once mothers are clean and sober? This research took on the positivist paradigm in hopes to answer this question. The researcher got an understanding of these challenges by asking questions about the drugs used during and after pregnancy, and the challenges they had with their child’s behavior while using drugs as opposed to the challenges they have with child’s behavior while sober. These questions were asked at the Coachella Valley Rescue Mission where many women are referred and mandated by the courts, or Child Protective Services, behind past or current substance use. Results of these findings indicated that there was a reduction in problematic behaviors that seemed to be correlated with mother’s sobriety

APA, Harvard, Vancouver, ISO, and other styles

12

Tello, Ramos Maria Cristina. "The foraging behaviour of hummingbirds through space and time." Thesis, University of St Andrews, 2015. http://hdl.handle.net/10023/7402.

Full text

Abstract:

Central place foragers, such as territorial hummingbirds, feed from resources that tend to be constant in space and to replenish with time (e.g. nectar in flowers). The ability to remember both where and when resources are available would allow these animals to forage efficiently. Animals that feed at multiple locations would also benefit from forming routes between these multiple locations. Hummingbirds are thought to forage by repeating the order in which they visit several locations following a route called a “trapline”, although there are no quantitative data describing this behaviour. As a first step to determining how and if wild free living hummingbirds forage by traplining, I decomposed this behaviour into some of its key components. Through five field experiments, where I trained free-living hummingbirds to feed from artificial flowers, I confirmed that territorial hummingbirds will, in fact, trapline. Birds will use the shortest routes to visit several locations and will prioritize those locations that are closest to a usual feeding site. Additionally, even though hummingbirds can learn to use temporal information when visiting several patches of flowers, the spatial location of those patches has a larger influence in how these birds forage in the wild. Since male and female hummingbirds were thought to forage differently I also tested whether there were sex differences in the types of cues they use when foraging. Contrary to expectation, female hummingbirds will also use spatial cues to relocate a rewarded site. Using the foraging ecology of rufous hummingbirds to formulate predictions as to what information these birds should use has lead me to discover that these birds forage in a completely different way than previously thought.

APA, Harvard, Vancouver, ISO, and other styles

13

Sun, Ao Ph D. Massachusetts Institute of Technology. "Singular behaviour and long time behaviour of mean curvature flow." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/126938.

Full text

Abstract:

Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mathematics, May, 2020
Cataloged from the official PDF of thesis.
Includes bibliographical references (pages 125-130).
In this thesis, we investigate two asymptotic behaviours of the mean curvature flow. The first one is the asymptotic behaviour of singularities of the mean curvature flow, and the asymptotic limit is modelled by the tangent flows. The second one is the asymptotic behaviour of the mean curvature flow as time goes to infinity. We will study several problems related to the asymptotic behaviours. The first problem is the partial regularity of the limit. The partial regularity of mean curvature flow without any curvature assumptions was first studied by Ilmanen. We will follow the idea of Ilmanen to study the partial regularity of other asymptotic limit. In particular, we introduce a generalization of Colding-Minicozzi's entropy in a closed manifold, which plays a significant role. The second problem is the genericity of the tangent flows of mean curvature flow. The generic mean curvature flow was introduced by Colding-Minicozzi. Furthermore, they introduced mean curvature flow entropy and use it to study the generic tangent flows of mean curvature flow. We study the multiplicity of the generic tangent flow. In particular, we prove that the generic compact tangent flow of mean curvature flow of surfaces has multiplicity 1. This result partially addresses the famous multiplicity 1 conjecture of Ilmanen. One key idea is defining a local version of Colding-Minicozzi's entropy. We also discuss some related results. These results include a joint work with Zhichao Wang and a joint work with Julius Baldauf.
by Ao Sun.
Ph. D.
Ph.D. Massachusetts Institute of Technology, Department of Mathematics

APA, Harvard, Vancouver, ISO, and other styles

14

Zhang, Chaoen. "Long time behaviour of kinetic equations." Thesis, Université Clermont Auvergne‎ (2017-2020), 2019. http://www.theses.fr/2019CLFAC056.

Full text

Abstract:

Cette thèse est consacrée au comportement à long terme de l'équation cinétique de Fokker-Planck et de l'équation de McKean-Vlasov. Le manuscrit est composé d'une introduction et de six chapitres. L'équation cinétique de Fokker-Planck est un exemple de base de la théorie de l'hypocoercivité de Villani qui affirme la décroissance exponentielle dans le temps en l'absence de coercivité. Dans son mémoire AMS, Villani a prouvé l'hypocoercivité de l'équation cinétique de Fokker-Planck en H^1(\mu), L^2(\mu) ou entropie. Cependant, une condition sur la bornitude de l'Hessien de l'hamiltonien a été imposée dans le cas entropique. Nous montrons au chapitre 2 comment nous pouvons affaiblir cette hypothèse par des multiplicateurs bien choisis à l'aide d'une inégalité de Sobolev logarithmique pondérée. Nous montrons que nos conditions sont satisfaites sous certaines conditions pratiques de fonction de Lyapunov.Dans le chapitre 4, nous appliquons les idées de Villani et certaines conditions de Lyapunov pour prouver l'hypocoercivité en H^1 pondéré dans le cas d'une interaction de champ moyen avec un taux de convergence exponentielle indépendant du nombre de particules. Pour cet objectif nous devons établir l'inégalité de Poincaré uniforme (sur le nombre de particules) et rendre une estimation connue de Villani qui était dimension-dépendante, dimension-indépendante.Au chapitre 6, nous étudions la contraction hypocoercive de la distance L^2-Wasserstein et nous retrouvons le taux optimal dans le cas du potentiel quadratique. La méthode est basée sur la dérivée en temps de la distance de Wasserstein. Au chapitre 7, le théorème d'hypoercivité de Villani dans l'espace H^1 pondéré est généralisé aux espaces H^k pondérés par une norm auxiliaire avec des termes mélangés bien choisis.L'équation de McKean-Vlasov est une équation diffusive non linéaire non locale. Il est bien connu qu'il a une structure de gradient-flot. Cependant, les résultats connus dépendent fortement des hypothèses de convexité. De telles hypothèses sont notamment assouplies dans les chapitres 3 et 5 où nous prouvons la convergence exponentielle vers l'équilibre respectivement en énergie libre et la distance L^1-Wasserstain, sous la condition de Dobrushin-Zegarlinski de l'absence de phase de transition. Notre approche est basée sur la théorie de la limite de champ moyen. Autrement dit, nous étudions le système d'un grand nombre de particules avec une interaction du type champ-moyen, puis passons à la limite par la propagation de chaos
This dissertation is devoted to the long time behaviour of the kinetic Fokker-Planck equation and of the McKean-Vlasov equation. The manuscript is composed of an introduction and six chapters.The kinetic Fokker-Planck equation is a basic example for Villani's hypocoercivity theory which asserts the exponential decay in large time in the absence of coercivity. In his memoir, Villani proved the hypocoercivity for the kinetic Fokker-Planck equation in either weighted H^1, weighted L^2 or entropy.However, a boundedness condition of the Hessian of the Hamiltonian was imposed in the entropic case. We show in Chapter 2 how we can get rid of this assumption by well-chosen multipliers with the help of a weighted logarithmic Sobolev inequality. Such a functional inequality can be obtained by some tractable Lyapunov condition.In Chapter 4, we apply Villani's ideas and some Lyapunov conditions to prove hypocoercivity in weighted H^1 in the case of mean-field interaction with a rate of exponential convergence independent of the number N of particles. For proving this we should prove the Poincaré inequality with a constant independent of N, and rends a dimension dependent boundeness estimate of Villani dimension-free by means of the stronger uniform log-Sobolev inequality and Lyapunov function method. In Chapter 6, we study the hypocoercive contraction in L^2-Wasserstein distance and we recover the optimal rate in the quadratic potential case. The method is based on the temporal derivative of the Wasserstein distance.In Chapter 7, Villani's hypoercivity theorem in weighted H^1 space is extended to weighted H^k spaces by choosing carefully some appropriate mixed terms in the definition of norm of H^k.The McKean-Vlasov equation is a nonlinear nonlocal diffusive equation. It is well-Known that it has a gradient flow structure. However, the known results strongly depend on convexity assumptions. Such assumptions are notably relaxed in Chapter 3 and Chapter 5 where we prove the exponential convergence to equilibrium respectively in free energy and the L^1-Wasserstain distance. Our approach is based on the mean field limit theory. That is, we study the associated system of a large numer of paricles with mean-field interaction and then pass to the limit by propagation of chaos

APA, Harvard, Vancouver, ISO, and other styles

15

Watanabe, Kisa. "Essays on welfare time limits and individuals' behavior /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/7486.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Whillans, Ashley Victoria. "Thinking about time as money decreases environmental behavior." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/49958.

Full text

Abstract:

Despite high profile environmental campaigns, Americans are no more likely to engage in environmental behavior today than they were 20 years ago. A novel explanation for this paradox may lie in the increasing tendency for people to see their time as money. National survey data suggests that seeing time as money is related to decreased environmental behavior. Using large-scale survey data (Study 1), we show that people are less likely to engage in environmental behavior if they are paid by the hour, a form of compensation that leads people to see their time as money. Using experimental methodology, we show that making the economic value of time salient lowers intentions to engage in environmental behavior (Studies 2 & 3) and actual recycling (Study 4). In Study 4, students led to see their time as money were five times less likely to recycle scrap paper when given the opportunity. In Study 5, we document a mechanism for this effect—individuals who are paid by the hour are chronically aware of the opportunity costs associated with engaging in everyday environmental behavior. Together, this research suggests that environmental decisions are shaped by viewing time as money, potentially shedding light on patterns of environmental behavior across time and around the world.
Arts, Faculty of
Psychology, Department of
Graduate

APA, Harvard, Vancouver, ISO, and other styles

17

Perelman, Erez. "Characterizing time varying program behavior for efficient simulation." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2007. http://wwwlib.umi.com/cr/ucsd/fullcit?p3259366.

Full text

Abstract:

Thesis (Ph. D.)--University of California, San Diego, 2007.
Title from first page of PDF file (viewed June 22, 2007). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 167-173).

APA, Harvard, Vancouver, ISO, and other styles

18

Deng, Yu. "Long time behavior of some nonlinear dispersive equations." Thesis, Princeton University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3712251.

Full text

Abstract:

This thesis is divided into two parts. The first part consists of Chapters 2 and 3, in which we study the random data theory for the Benjamin-Ono equation on the periodic domain. In Chapter 2 we shall prove the invariance of the Gibbs measure associated to the Hamiltonian E₁ of the equation, which was constructed in [49]. Despite the fact that the support of the Gibbs measure contains very rough functions that are not even in L², we have successfully established the global dynamics by combining probabilistic arguments, X^s,b type estimates and the hidden structure of the equation. In Chapter 3, which is joint work with N. Tzvetkov and N. Visciglia, we extend this invariance result to the weighted Gaussian measures associated with the higher order conservation laws E² and E³, thus completing the collection of invariant measures (except for the white noise), given the result of [51].

The second part concerns the global behavior of solutions to quasilinear dispersive systems in Rd with suitably small data. In Chapter 4 we shall prove global existence and scattering for small data solutions to systems of quasilinear Klein-Gordon equations with arbitrary speed and mass in 3 D, which extends the results in [20] and [32]. Moreover, the methods introduced here are quite general, and can be applied in a number of different situations. In Chapter 5, we briefly discuss how these methods, together with other techniques, are used in recent joint work with A. Ionescu and B. Pausader to study the 2D Euler-Maxwell system.

APA, Harvard, Vancouver, ISO, and other styles

19

Aristorenas, George V. (George Villanueva). "Time-dependent behavior of tunnels excavated in shale." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/13197.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Wu, Yixiang. "Long Time Behavior for Reaction-Diffusion Population Models." Thesis, University of Louisiana at Lafayette, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10002390.

Full text

Abstract:

In this work, we study the long time behavior of reaction-diffusion models arising from mathematical biology. First, we study a reaction-diffusion population model with time delay. We establish a comparison principle for coupled upper/lower solutions, prove the existence/uniqueness result for the model, and show the global asymptotic behavior of the model by constructing successive improved upper/lower solutions. Next, we consider a reaction-diffusion equation with continuous delay and spatial variable coefficients. We prove the global attractivity of the positive steady state by showing that the omega limit set is a singleton. Finally, we study an SIS reaction-diffusion model with spatial heterogeneous disease transmission and recovery rates. We define a basic reproduction number and obtain some existence and non-existence results of the endemic equilibrium of the model. We then study the global attractivity of the steady state for two special cases.

APA, Harvard, Vancouver, ISO, and other styles

21

Leichsenring, Peter, and Thomas Wallmersperger. "Time-dependent chemo-electromechanical behavior of hydrogelbased structures." SPIE, 2018. https://tud.qucosa.de/id/qucosa%3A35174.

Full text

Abstract:

Charged hydrogels are ionic polymer gels and belong to the class of smart materials. These gels are multiphasic materials which consist of a solid phase, a fluid phase and an ionic phase. Due to the presence of bound charges these materials are stimuli-responsive to electrical or chemical loads. The application of electrical or chemical stimuli as well as mechanical loads lead to a viscoelastic response. On the macroscopic scale, the response is governed by a local reversible release or absorption of water which, in turn, leads to a local decrease or increase of mass and a respective volume change. Furthermore, the chemo-electro-mechanical equilibrium of a hydrogel depends on the chemical composition of the gel and the surrounding solution bath. Due to the presence of bound charges in the hydrogel, this system can be understood as an osmotic cell where differences in the concentration of mobile ions in the gel and solution domain lead to an osmotic pressure difference. In the present work, a continuum-based numerical model is presented in order to describe the time-dependent swelling behavior of hydrogels. The numerical model is based on the Theory of Porous Media and captures the fluid-solid, fluid-ion and ion-ion interactions. As a direct consequence of the chemo-electro-mechanical equilibrium, the corresponding boundary conditions are defined following the equilibrium conditions. For the interaction of the hydrogel with surrounding mechanical structures, also respective jump condtions are formulated. Finaly, numerical results of the time-dependent behavior of a hydrogel-based chemo-sensor will be presented.

APA, Harvard, Vancouver, ISO, and other styles

22

Masoero, Marco. "On the long time behavior of potential MFG." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLED057.

Full text

Abstract:

Cette thèse porte sur l’étude du comportement en temps long des jeux à champ moyen (MFG) potentiels, indépendamment de la convexité du problème de minimisation associé. Pour le système hamiltonien de dimension finie, des problèmes de même nature ont été traités par la théorie KAM faible. Nous transposons de nombreux résultats de cette théorie dans le contexte des jeux à champ moyen potentiels. Tout d'abord, nous caractérisons par approximation ergodique la valeur limite associée aux systèmes MFG à horizon fini. Nous fournissons des exemples explicites dans lesquels cette valeur est strictement supérieure au niveau d’énergie des solutions stationnaires du système MFG ergodique. Cela implique que les trajectoires optimales des systèmes MFG à horizon fini ne peuvent pas converger vers des configurations stationnaires. Ensuite, nous prouvons la convergence du problème de minimisation associé à MFG à horizon fini vers une solution de l’équation Hamilton-Jacobi critique dans l’espace de mesures de probabilité. De plus, nous montrons une limite de champ moyen pour la constante ergodique associée à l’équation Hamilton-Jacobi de dimension finie correspondante. Dans la dernière partie, nous caractérisons la limite du problème de minimisation à horizon infini que nous avons utilisé pour l'approximation ergodique dans la première partie du manuscrit
The purpose of this thesis is to shed some light on the long time behavior of potential Mean Field Games (MFG), regardless of the convexity of the minimization problem associated. For finite dimensional Hamiltonian systems, problems of the same nature have been addressed through the so-called weak KAM theory. We transpose many results of this theory in the infinite dimensional context of potential MFG. First, we characterize through an ergodic approximation the limit value associated to time dependent MFG systems. We provide explicit examples where this value is strictly greater than the energy level of stationary solutions of the ergodic MFG system. This implies that optimal trajectories of time dependent MFG systems cannot converge to stationary configurations. Then, we prove the convergence of the minimization problem associated to time dependent MFGs to a solution of the critical Hamilton-Jacobi equation in the space of probability measures. In addition, we show a mean field limit for the ergodic constant associated with the corresponding finite dimensional Hamilton-Jacobi equation. In the last part we characterize the limit of the infinite horizon discounted minimization problem that we use for the ergodic approximation in the first part of the manuscript

APA, Harvard, Vancouver, ISO, and other styles

23

Bjorland, Clayton M. "On the long time behavior of fluid equations /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2008. http://uclibs.org/PID/11984.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Bergström, Jörgen S. (Jörgen Stefan) 1969. "Large strain time-dependent behavior of elastomeric materials." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9794.

Full text

Abstract:

Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1999.
Includes bibliographical references (p. 248-254).
The mechanical behavior of elastomeric materials is known to be rate-dependent and to exhibit hysteresis upon cyclic loading. Although these features of the rubbery constitutive response are well-recognized and important to its function, few models attempt to quantify these aspects of response. Based on a detailed experimental investigation a new constitutive model for the time-dependence of unfilled elastomers has been developed. The foundation of the model is that the mechanical behavior can be decomposed into two parts: an equilibrium network corresponding to the state that is approached in long time stress relaxation tests; and a second network capturing the non-linear rate-dependent deviation from the equilibrium state. The time-dependence of the second network is further assumed to be governed by the reputational motion of molecules having the ability to significantly change conformation and thereby relaxing the overall stress state. To model the behavior of particle filled elastomers the newly developed constitutive framework is then extended to include filler interactions by amplification of the first strain invariant. In an effort to examine some of the assumptions that are common in the constitutive modeling of particle filled elastomers, a detailed series of micromechanical models were constructed using two- and three-dimensional finite elP.ment simulations. The results indicate that the effect of filler particles can be accurately predicted using stochastic three-dimensional simulations suggesting that successful modeling mainly requires a rigorous treatment of the composite nature of the microstructure and not molecular level concepts such as alteration of mobility or effective crosslinking density in the elastomeric phase of the material. A direct comparison between the new model and experimental data for a number of different elastomers the observed behavior.
by Jörgen S. Bergström.
Ph.D.

APA, Harvard, Vancouver, ISO, and other styles

25

Reiss, Joshua D. "The analysis of chaotic time series." Diss., Full text available online (restricted access), 2001. http://images.lib.monash.edu.au/ts/theses/reiss.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Duliga, Janet M. "Exploring Fun across a Time Horizon." Thesis, University of Pennsylvania, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10839351.

Full text

Abstract:

This qualitative study on fun in the workplace explored the phenomenon from a new vantage point, the individual’s experience of a management-sponsored fun event across a time horizon. The research in the field has sought understanding of fun by identifying different ways employees have fun at work, categorizing the sources of fun at work, and progressing toward a more unified definition of what fun in the workplace encompasses. This study accepted the existing research linking fun in the workplace to improved engagement, improved retention rates, applicant attraction, and many other beneficial organizational outcomes. Notwithstanding all these benefits, the qualitative research has issued warnings about management-sponsored fun in the workplace, proposing that it can foster cynicism and negativity at the same time it is creating more positive outcomes. This study aimed to add to the body of research by exploring the individual experience of fun in the workplace across a time horizon. To do this, this study gathered descriptions from employees about their thoughts and feelings before, during, and after the experience of a management-sponsored fun event. The data were collected using semi-structured in-depth interviews of 28 individuals at four different mid-sized companies. Through a thematic analysis of these data four findings are presented: participants experience an anticipatory period before fun events; they articulate the importance of breaking with the mundane and deeper connections with coworkers; they perceive a manifestation of organization values at these events; and they exhibit very minimal evidence of cynicism or negativity related to these events. Implications for organizations and future researchers are proposed.

APA, Harvard, Vancouver, ISO, and other styles

27

Lindstedt, Erin. "Environmental influences of behavior in two Gambusia species: public information use and behavioral consistency across ecological and evolutionary time scales." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1420197514.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Hudson, Taryn M. "The effects of differing levels of treatment integrity on students' academic engaged time." Diss., UC access only, 2009. http://proquest.umi.com/pqdweb?did=1904964621&sid=1&Fmt=7&clientId=48051&RQT=309&VName=PQD.

Full text

Abstract:

Thesis (Ph. D.)--University of California, Riverside, 2009.
Includes abstract. Includes bibliographical references (leaves 58-65). Issued in print and online. Available via ProQuest Digital Dissertations.

APA, Harvard, Vancouver, ISO, and other styles

29

Kincheloe, Lauren M. "College: A Time to Increase Knowledge and Attenuate Health? A Study into College's Influences on Students' Alcohol Consumption, Physical Activity, and Diet." Miami University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=miami1339431346.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Hilton, Nicola Anne. "Exploration into the behaviour of cardiac waiting lists." Thesis, University of Southampton, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364721.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Moscato, Emily L. "Examining the reciprocal influences of adolescent behavior problems and parenting behaviors over time following a randomized controlled trial for pediatric traumatic brain injury." University of Cincinnati / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1552398917460201.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Si, Xuetong, and 司学通. "Structural behaviour of cable-stayed bridges taking into account time-dependent behaviour." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B47849514.

Full text

Abstract:

The creep and shrinkage of concrete and the relaxation of cables cause long-term redistribution of internal forces and time-dependent deformations in concrete structures, steel-concrete composite structures and concrete cable-stayed bridges. They should be properly modelled for accurate prediction of their long-term behaviour and its effect on instantaneous structural responses at service. An equivalent stress relaxation model is proposed for prestressing tendons based on the intrinsic stress relaxation, from which the equivalent creep coefficients can be obtained through a recursive algorithm. Based on the equivalent stress relaxation model, an accurate finite element analysis of time-dependent behaviour by time integration has been devised considering concrete creep, concrete shrinkage and cable relaxation. Concrete members are modelled by beam-column elements while tendons are modelled by truss elements with nodes connected to the beam axis by perpendicular rigid arms. It is found that the proposed relaxation model with time integration can provide a reliable method as well as benchmark solutions for time-dependent analysis. The numerical results obtained indicate that the interactions among these factors should be properly considered in analysing the long-term performance of concrete bridges. Although time integration provides a reliable method for time-dependent analysis, both the computing time and memory requirement increase drastically with the number of time steps as the time-dependent strains of concrete and tendons within a time interval depend on the loading history up to that time. It is therefore necessary to develop a more efficient method to conduct time-dependent analysis. The relaxation-adjusted elasticity modulus is introduced on the basis of equivalent creep coefficients of tendons. Then, an efficient tendon sub-element is put forward to cope with cables with arbitrary profiles. Finally, a more general single-step method is devised using the classical age-adjusted elasticity modulus to account for external loading and creep effect, the shrinkage-adjusted elasticity modulus to consider shrinkage effect and its interaction with concrete creep, and the relaxation-adjusted elasticity modulus to consider the effect of cable relaxation based on the finite element method. The numerical results obtained indicate not only the accuracy of the single-step method but also the significance of interaction among various time-varying factors. Based on the time integration or single-step method, a systematic method is developed to monitor the long-term variations of dynamic properties of cable-stayed bridges taking into account various time-varying factors and geometric nonlinearities. Numerical studies show that, although geometric nonlinearities tend to reduce the natural frequencies, the time-dependent behaviour of concrete more than offsets it and tends to increase the natural frequencies in the long run. A generic method is further presented to investigate the long-term dynamic response of vehicle-bridge interaction systems taking account of time-dependent behaviour. The vehicles are represented by a combination of mass-spring-damper systems while the bridge is modelled by finite elements. The surface roughness of bridge deck is simulated by spectral representation method and introduced to the coupled system properly. Based on the method, the individual and combined effects of various time-varying factors are studied in detail using various numerical examples.
published_or_final_version
Civil Engineering
Doctoral
Doctor of Philosophy

APA, Harvard, Vancouver, ISO, and other styles

33

Moshkina, Lilia V. "An integrative framework of time-varying affective robotic behavior." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/39568.

Full text

Abstract:

As robots become more and more prevalent in our everyday life, making sure that our interactions with them are natural and satisfactory is of paramount importance. Given the propensity of humans to treat machines as social actors, and the integral role affect plays in human life, providing robots with affective responses is a step towards making our interaction with them more intuitive. To the end of promoting more natural, satisfying and effective human-robot interaction and enhancing robotic behavior in general, an integrative framework of time-varying affective robotic behavior was designed and implemented on a humanoid robot. This psychologically inspired framework (TAME) encompasses 4 different yet interrelated affective phenomena: personality Traits, affective Attitudes, Moods and Emotions. Traits determine consistent patterns of behavior across situations and environments and are generally time-invariant; attitudes are long-lasting and reflect likes or dislikes towards particular objects, persons, or situations; moods are subtle and relatively short in duration, biasing behavior according to favorable or unfavorable conditions; and emotions provide a fast yet short-lived response to environmental contingencies. The software architecture incorporating the TAME framework was designed as a stand-alone process to promote platform-independence and applicability to other domains. In this dissertation, the effectiveness of affective robotic behavior was explored and evaluated in a number of human-robot interaction studies with over 100 participants. In one of these studies, the impact of Negative Mood and emotion of Fear was assessed in a mock-up search-and-rescue scenario, where the participants found the robot expressing affect more compelling, sincere, convincing and "conscious" than its non-affective counterpart. Another study showed that different robotic personalities are better suited for different tasks: an extraverted robot was found to be more welcoming and fun for a task as a museum robot guide, where an engaging and gregarious demeanor was expected; whereas an introverted robot was rated as more appropriate for a problem solving task requiring concentration. To conclude, multi-faceted robotic affect can have far-reaching practical benefits for human-robot interaction, from making people feel more welcome where gregariousness is expected to making unobtrusive partners for problem solving tasks to saving people's lives in dangerous situations.

APA, Harvard, Vancouver, ISO, and other styles

34

Zhang, Tiequan. "Chemical behavior of phosphorus over time in fertilized soils." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0012/NQ30426.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Dahms, René. "Long time behavior of a spherical mean field model." [S.l.] : [s.n.], 2002. http://edocs.tu-berlin.de/diss/2002/dahms_rene.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Zhang, Tiequan. "Chemical behavior of phosphorus over time in fertilized soils." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34486.

Full text

Abstract:

Fertilizer P accumulates in soils, with potential for movement to waterways, causing eutrophication. Fertilizer P reactions in monoculture corn (Zea mays L.) production over time will determine environmentally sound soil management practices. Soil P changes over time were determined on a Chicot sandy clay loam (Grey Brown Luvisol) and a Ste. Rosalie clay (Humic Gleysol). Fertilizer P was added at 44 and 132 kg P ha$ sp{-1}$ and to the Chicot soil only, manure containing 60 kg P for the first five years. Mehlich-3 (M3) extraction, soil P fractionation, $ sp{31}$P NMR analysis, P in leaching water, and path analysis were measured. Added P increased M3 P more when manure was also added, and in clay soils. To increase M3 P by 1 kg ha$ sp{-1}$ required from 3.6 to 8.1 kg ha$ sp{-1}$ fertilizer P, and when "net" fertilizer additions were used, fertilizer required was from 1.8 to 5.3 kg P ha$ sp{-1}.$ Moderately labile organic P (Po) decreased at 0 added P. With P at the rate of plant removal, inorganic (Pi) and Po fractions were unchanged. Excess P increased labile P and resistant P through moderately labile Pi. More P remained in labile Pi fractions when manure P was added, or in the soil with the higher clay content. Soil organic P levels increased upon fertilization only in the sandy loam soil. Labile and moderately labile Po could be estimated using monoester phosphate values determined by $ sp{31}$P NMR. Inorganic P values in gravitational water increased above 0.05 mg P L$ sp{-1}$ when soil labile Pi increased above 108 mg kg$ sp{-1}$ in the sandy loam soil and 69 mg L$ sp{-1}$ in the clay soil. Thus soil P movement was related to inorganic P additions. Increased fertilizer P did not increase organic P leaching losses. Fertilizer P in corn production may result in groundwater eutrophication.

APA, Harvard, Vancouver, ISO, and other styles

37

Schiemanowski, Lothar [Verfasser]. "Long Time Behavior of the Spinor Flow / Lothar Schiemanowski." Kiel : Universitätsbibliothek Kiel, 2018. http://d-nb.info/1163603732/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Turk, Matthew Alan. "Interactive-time vision--face recognition as a visual behavior." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/13471.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Kumar, Tushar. "Characterizing and controlling program behavior using execution-time variance." Diss., Georgia Institute of Technology, 2016. http://hdl.handle.net/1853/55000.

Full text

Abstract:

Immersive applications, such as computer gaming, computer vision and video codecs, are an important emerging class of applications with QoS requirements that are difficult to characterize and control using traditional methods. This thesis proposes new techniques reliant on execution-time variance to both characterize and control program behavior. The proposed techniques are intended to be broadly applicable to a wide variety of immersive applications and are intended to be easy for programmers to apply without needing to gain specialized expertise. First, we create new QoS controllers that programmers can easily apply to their applications to achieve desired application-speciﬁc QoS objectives on any platform or application data-set, provided the programmers verify that their applications satisfy some simple domain requirements speciﬁc to immersive applications. The controllers adjust programmer-identiﬁed knobs every application frame to effect desired values for programmer-identiﬁed QoS metrics. The control techniques are novel in that they do not require the user to provide any kind of application behavior models, and are effective for immersive applications that defy the traditional requirements for feedback controller construction. Second, we create new proﬁling techniques that provide visibility into the behavior of a large complex application, inferring behavior relationships across application components based on the execution-time variance observed at all levels of granularity of the application functionality. Additionally for immersive applications, some of the most important QoS requirements relate to managing the execution-time variance of key application components, for example, the frame-rate. The proﬁling techniques not only identify and summarize behavior directly relevant to the QoS aspects related to timing, but also indirectly reveal non-timing related properties of behavior, such as the identiﬁcation of components that are sensitive to data, or those whose behavior changes based on the call-context.

APA, Harvard, Vancouver, ISO, and other styles

40

Julius, Michael J. "Time, temperature and frequency viscoelastic behavior of commercial polymers." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=2858.

Full text

Abstract:

Thesis (M.S.)--West Virginia University, 2003.
Title from document title page. Document formatted into pages; contains xv, 114 p. : ill. Includes abstract. Includes bibliographical references (p. 112-114).

APA, Harvard, Vancouver, ISO, and other styles

41

Penfold, Christopher Andrew. "Modelling Chromosome Behaviour in Space and Time." Thesis, University of Sheffield, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.521825.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Hunter, Julia. "Real-Time Recognition of Motion Behaviour Patterns." Thesis, University of Essex, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.522079.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Song, Fei. "Modelling time-dependent plastic behaviour of geomaterials." Doctoral thesis, Universitat Politècnica de Catalunya, 2021. http://hdl.handle.net/10803/672273.

Full text

Abstract:

Representing the time-dependent plastic behaviour of geomaterials is a critical issue in the correct application of tunnelling design techniques such as the convergence-confinement method or numerical modelling. Furthermore, during underground excavations below the water table, the effect of seepage flow cannot be ignored, and the behaviour of the tunnel must be analysed in a coupled hydro-mechanical framework. The main objective of this thesis is to analyse the response of tunnels excavated in saturated time-dependent plastic rock masses. For this purpose, a time-dependent plastic constitutive model has been developed and implemented in the software CODE_BRIGHT to simulate the time-dependent, strain-softening and creep-induced failure behaviour of geomaterials. Moreover, a coupled hydro-mechanical model is utilised to simulate the interaction between solid deformations and fluid flows. The obtained results provide relevant insights into the response of tunnels excavated in saturated time-dependent plastic rock masses. However, numerical difficulties might occur when modelling multi-stage excavations problems, when considering multi-physics coupled processes or non-linear mechanical material models, especially if the layers or pieces of excavated material are relatively coarse. In order to mitigate these numerical difficulties, a smoothed excavation (SE) method has been proposed and implemented in the software CODE_BRIGHT, which can improve numerical efficiency and mitigate non-convergence issues. Subsequently, to analyse the stability of tunnels with a combined support system, numerical solutions have been developed for tunnels excavated in strain-softening rock masses, considering the whole process of tunnel advancement, and the sequential installation of primary and secondary support systems. For this purpose, the actual compatibility conditions at both the rock-support interface and the support-support interface are considered. This method provides a convenient alternative method for the preliminary design of supported tunnels.
La adecuada representación del comportamiento plástico y dependiente del tiempo de los geomateriales es una cuestión crítica en la correcta aplicación de técnicas de diseño de túneles como el método de convergencia-confinamiento o el modelado numérico. Por otro lado, durante las excavaciones subterráneas por debajo del nivel freático no se puede ignorar el efecto del flujo de filtración y, por tanto, el comportamiento del túnel debe analizarse en un marco hidromecánico acoplado. El principal objetivo de esta tesis es analizar la respuesta de túneles excavados en macizos rocosos plásticos saturados y dependientes del tiempo. Para este propósito, se ha desarrollado e implementado un modelo constitutivo plástico dependiente del tiempo en el software CODE_BRIGHT, que permite simular el comportamiento dependiente del tiempo, el de reblandecimiento por deformación y el inducido por fluencia de los geomateriales. Además, se ha utilizado un modelo hidromecánico acoplado para simular la interacción entre la deformación del sólidas y el flujo de fluido. Los resultados obtenidos proporcionan información relevante sobre la respuesta de los túneles excavados en macizos rocosos plásticos, saturados y dependientes del tiempo. Sin embargo, pueden surgir dificultades numéricas al modelar problemas de excavaciones en varias etapas, al considerar procesos multifísicos acoplados o modelos de materiales mecánicos no lineales, especialmente si las capas o piezas de material excavado son relativamente gruesas. Para mitigar estas dificultades numéricas, se ha propuesto e implementado un método de excavación suavizada (SE) en el software CODE_BRIGHT, que puede mejorar la eficiencia numérica y mitigar los problemas de no convergencia. Posteriormente, para analizar la estabilidad de túneles con sistemas de sostenimiento combinado, se han desarrollado soluciones numéricas para túneles excavados en macizos con reblandecimiento por deformación, considerando todo el proceso de avance del túnel y la instalación secuencial de los sistemas de sostenimiento primario y secundario. Con este propósito, se han considerado las condiciones reales de compatibilidad tanto en la interfaz roca- sostenimiento como en la interfaz sostenimiento-sostenimiento. Este método proporciona un método alternativo conveniente para el diseño preliminar de túneles con sostenimiento.

APA, Harvard, Vancouver, ISO, and other styles

44

De, Vittorio Stefano. "Time-dependent behaviour of reinforced concrete slabs." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/3247/.

Full text

Abstract:

In this thesis is studied the long-term behaviour of steel reinforced slabs paying particular attention to the effects due to shrinkage and creep. Despite the universal popularity of using this kind of slabs for simply construction floors, the major world codes focus their attention in a design based on the ultimate limit state, restraining the exercise limit state to a simply verification after the design. For Australia, on the contrary, this is not true. In fact, since this country is not subjected to seismic effects, the main concern is related to the long-term behaviour of the structure. Even if there are a lot of studies about long-term effects of shrinkage and creep, up to date, there are not so many studies concerning the behaviour of slabs with a cracked cross section and how shrinkage and creep influence it. For this reason, a series of ten full scale reinforced slabs was prepared and monitored under laboratory conditions to investigate this behaviour. A wide range of situations is studied in order to cover as many cases as possible, as for example the use of a fog room able to reproduce an environment of 100% humidity. The results show how there is a huge difference in terms of deflections between the case of slabs which are subjected to both shrinkage and creep effects soon after the partial cracking of the cross section, and the case of slabs which have already experienced shrinkage effects for several weeks, when the section has not still cracked, and creep effects only after the cracking.

APA, Harvard, Vancouver, ISO, and other styles

45

Allen, Lynn. "Comparing behavior assessment measures with behavior specific responses to assess aggression in first-time expectant fathers." Huntington, WV : [Marshall University Libraries], 2003. http://www.marshall.edu/etd/descript.asp?ref=148.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

White, Joanna Kate. "Modelling traffic behaviour on networks." Thesis, Lancaster University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302391.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Wang, Jian. "From local to global: Complex behavior of spatiotemporal systems with fluctuating delay times: From local to global: Complex behavior of spatiotemporal systemswith fluctuating delay times." Doctoral thesis, Universitätsverlag der Technischen Universität Chemnitz, 2013. https://monarch.qucosa.de/id/qucosa%3A20006.

Full text

Abstract:

The aim of this thesis is to investigate the dynamical behaviors of spatially extended systems with fluctuating time delays. In recent years, the study of spatially extended systems and systems with fluctuating delays has experienced a fast growth. In ubiquitous natural and laboratory situations, understanding the action of time-delayed signals is a crucial for understanding the dynamical behavior of these systems. Frequently, the length of the delay is found to change with time. Spatially extended systems are widely studied in many fields, such as chemistry, ecology, and biology. Self-organization, turbulence, and related nonlinear dynamic phenomena in spatially extended systems have developed into one of the most exciting topics in modern science. The first part of this thesis considers the discrete system. Diffusively coupled map lattices with a fluctuating delay are used in the study. The uncoupled local dynamics of the considered system are represented by the delayed logistic map. In particular, the influences of diffusive coupling and fluctuating delay are studied. To observe and understand the influences, the results for the considered system are compared with coupled map lattices without delay and with a constant delay as well as with the uncoupled logistic map with fluctuating delays. Identifying different patterns, determining the existence of traveling wave solutions, and specifying the fully synchronized stable state are the focus of this part of the study. The Lyapunov exponent, the master stability function, spectrum analysis, and the structure factor are used to characterize the different states and the transitions between them. The second part examines the continuous system. The delay is introduced into the reactionterm of the Fisher-KPP equation. The focus of this part of study is the time-delay-induced Turing instability in one-component reaction-diffusion systems. Turing instability has previously only been found in multiple-component reaction-diffusion systems. However, this work demonstrates with the help of the stability exponent that fluctuating delay can result in Turing instability in one-component reaction-diffusion systems as well.
Ziel der vorliegenden Arbeit ist die Untersuchung der Einflüsse der zeitlich fluktuierenden Verzögerungen in räumlich ausgedehnten diffusiven Systemen. Durch den Vergleich von Systemen mit konstanter Verzögerung bzw. Systemen ohne räumliche Kopplung erhält man ein tieferes Verständnis und eine bessere Beschreibungsweise der Dynamik des räumlich ausgedehnten diffusiven Systems mit fluktuierenden Verzögerungen. Im ersten Teil werden diskrete Systeme in Form von diffusiven Coupled Map Lattices untersucht. Als die lokale iterierte Abbildung des betrachteten Systems wird die logistische Abbildung mit Verzögerung gewählt. In diesem Teil liegt der Fokus auf Musterbildung, Existenz von Multiattraktoren und laufenden Wellen sowie der Möglichkeit der vollen Synchronisation. Masterstabilitätsfunktion, Lyapunov Exponent und Spektrumsanalyse werden benutzt, um das dynamische Verhalten zu verstehen. Im zweiten Teil betrachten wir kontinuierliche Systeme. Hier wird die Fisher-KPP Gleichung mit Verzögerungen im Reaktionsteil untersucht. In diesem Teil liegt der Fokus auf der Existenz der Turing Instabilität. Mit Hilfe von analytischen und numerischen Berechnungen wird gezeigt, dass bei fluktuierenden Verzögerungen eine Turing Instabilität auch in 1-Komponenten-Reaktions-Diffusionsgleichungen gefunden werden kann

APA, Harvard, Vancouver, ISO, and other styles

48

Haines, Katia Marie. "Using discrete trial training with progressive time delay prompting to teach children with autism spectrum disorder to tact phonemes." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2016. https://ro.ecu.edu.au/theses/2077.

Full text

Abstract:

Discrete trial training (DTT) and progressive time delay prompting (PTD) are effective techniques for teaching new skills to children with autism spectrum disorder (ASD). However, these methods have not yet been applied to systematic teaching of phonemes to children with ASD. As phoneme recognition (i.e. recognising the sounds the letters of the alphabet make when spoken) is an essential foundational literacy skill, and as there currently exists a large gap in reading ability between children with ASD and their neurotypical same age peers, further investigation was warranted. As phoneme recognition is one small subskill of reading competency, it was also investigated whether phoneme recognition transferred to the ability to sound out and blend consonant-vowel-consonant (CVC) words (i.e. cat, tip, pat). A single subject research design with multiple baseline was implemented to investigate whether DTT and PTD were effective methods of teaching children with ASD to tact (or label) phonemes or numerals. Numerals were included as a second target stimuli in order to a) comprehensively test the efficacy of DTT and PTD to different foundational education skills and b) clearly attribute any CVC words mastered to being taught tacting of phonemes using DTT and PTD rather than an extraneous variable (i.e. classroom teaching). It was hypothesised that all participants would master, retain and generalise some stimuli, but only participants taught tacting of phonemes would go on to master sounding out and blending of CVC words. Participants (n = 10) were children aged 5-12 with an ASD diagnosis enrolled in full time primary schooling who were randomly assigned to one of three cohorts; literacy cohort ( n = 4), numeracy cohort (n = 4) or control cohort (n = 2). Control cohort participants engaged in pre and post testing, with treatment as usual (exposure to typical class curricula) for the remainder of the data collection period. Participants in the literacy and numeracy cohorts underwent four phases of experimental analysis: Baseline, Intervention (where DTT and PTD were used to systematically teach tacting of phonemes or numerals to mastery), CVC probe (probing for transfer of learned stimuli to the ability to sound out and blend CVC words) and Generalisation (probing for transfer of learned stimuli to people, place and materials). Results demonstrated that DTT and PTD are effective methods of teaching tacting of phonemes and numerals, with participants mastering, retaining and generalising an average of 8.7 phonemes and 9.5 numerals over a 16 week period. The control cohort acquired an iv AUTISM, ABA, AND LITERACY average of 2 phonemes or numerals over a 24 week period as a function of being engaged in typical classroom instruction. As hypothesised, only participants from the literacy cohort demonstrated an ability to sound out and blend CVC words during the second phase of the study. The current research adds support to the effectiveness of DTT and PTD in teaching children with ASD to acquire new skills. Further, the research extends this efficacy into a new domain of skill acquisition, the ability to tact phonemes and numerals. This research then provides a discussion in relation to the educational and social significance and implications of the results, and the implications for clinical practice in Western Australia, where the research was conducted. Lastly, limitations of the current research and directions for future research are discussed.

APA, Harvard, Vancouver, ISO, and other styles

49

Oliveira, Luis C. R. "Designing and evaluating a behaviour change intervention that introduces modification of time perceptions as a solution to promote sustainable behaviours." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/14482.

Full text

Abstract:

This research presents the design and evaluation of an intervention that introduces modification of time perceptions as one of the solutions to promote sustainable behaviours. It is demonstrated in this thesis that unnecessary energy use is often caused by temporal tensions, defined as the relation between actions to be performed and available time. This research proposes that it is possible to deliberately reduce temporal tensions, and this can motivate people to behave more sustainably. Persuasive technology and human-computer interaction provided the tools needed to manipulate time perceptions and therefore bring about changes in the specific behaviours that result in unnecessary energy usage. Previous studies indicate that behaviours play an important role in energy consumption. From the different domains of energy use that could be examined, cooking was chosen to be the platform where the studies on behaviour change and energy use would take place. How behaviours influence energy use motivated the design of empirical studies to understand behaviours related to domestic energy use and identify what are the determinants of these behaviours. Each determinant was related to a strategy to be included on a behaviour change intervention. A wider survey was developed to understand students acceptance of a set of proposed energy saving techniques, and resulted in a vast volume of information about user preferences and intentions to perform the suggested energy saving behaviours for cooking. It emerged that participants rushed into the cooking tasks without much deliberation, consequently not following preparation procedures and thus using more energy. Information gathered during the first studies also showed that participants behaviours were partially motivated by the need to speed up the cooking process in order to reduce boredom when they were waiting for the food to cook, consequently resulting in extra energy usage. The knowledge gathered from the preceding steps and a literature review informed the design of strategies to modify the non-sustainable behaviours and promote energy saving. A user-centred design process involving an idea generation session and scenario analysis was used to provide a set of strategies to be embedded in an intervention, containing the specific methods to tackle the correspondent determinants of behaviours. The specific needs of the cooking activity indicated that an electronic intervention was an adequate platform to be implemented and tested. Two high resolution working prototypes of the electronic interventions were developed as mobile phone applications. The final study comprised the evaluation of the proposed interventions in improving aspects of the cooking activity, the acceptance of the interventions and effectiveness in promoting energy saving.

APA, Harvard, Vancouver, ISO, and other styles

50

Cromlish, Suzanne McLeod. "EMPOWERING THE 99%...ONE ESOP AT A TIME!A MIXED METHODS NATIONAL STUDY OF ACQUISITIONS BY EMPLOYEE OWNED COMPANIES (ESOPs)." Case Western Reserve University School of Graduate Studies / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=case1497011950499674.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic 'TIMED BEHAVIOR'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles