Dissertations / Theses: 'Time and tide'

1

Ferron, David Joseph. "Time and tide, harbouring place in Seal Cove." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ39652.pdf.

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2

Li, Tak-wai Wilson. "Forecasting of tide heights : an application of smoothness priors in time series modelling /." [Hong Kong] : University of Hong Kong, 1991. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13154357.

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3

Li, Tak-wai Wilson, and 李德煒. "Forecasting of tide heights: an application of smoothness priors in time series modelling." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1991. http://hub.hku.hk/bib/B3121048X.

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4

Sastry, M. Anjali. "Time and tide in organizations : simulating change processes in adaptive, punctuated, and ecological theories of organizational evolution." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/11876.

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5

Gelfand, H. Michael. ""Time, tide, and formation wait for no one": Culturaland social change at the United States Naval Academy, 1949-2000." Diss., The University of Arizona, 2002. http://hdl.handle.net/10150/280180.

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The United States Naval Academy, located in Annapolis, Maryland, has trained officers for the U.S. Navy since 1845 and for the U.S. Marine Corps since 1887. This dissertation examines cultural and social changes at the Academy since 1949, and connects transformations at Annapolis to social trends in the larger American society. Through the use of a variety of source material, including archival research, oral history, and participatory observation at the Naval Academy, this manuscript presents thematic case studies related to gender, pranks, race, recruiting, religion, and midshipmen activism.

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6

Zigic, Sasha, and n/a. "A Methodology to Calculate the Time-Varying Flow Through a Hydraulic Structure Connecting Two Water Bodies." Griffith University. School of Engineering, 2005. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20060111.145655.

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Hydraulic lock structures have been used for hundreds of years to control and maintain water levels in waterways. The most common are gated water regulation structures used to catch and divert water, and form an essential and critical part of many flood control and agricultural schemes. Although there are clear economic advantages to building the structures, they can contribute to major water quality problems for the waterways they influence (i.e. increased residence times and a change in mixing ability). Further, in most cases, the methods previously used to assess how the structures and their operations influence the flow regimes between the two connected systems were limited, thus hydraulic designers rely on simple formulations, existing literature and experience. Consequently, the objectives of this thesis were to undertake a detailed field study and develop a methodology and computer simulation tool to calculate the flow through a hydraulic structure connecting two water bodies so that future designs can be undertaken based upon sound knowledge. To demonstrate the outcomes of this thesis, the methodology and model were applied to an existing hydraulic structure (referred to as Structure C). Structure C is used to connect and exchange water between the tidally dominated section of the Nerang River estuary and an artificial lake system (Burleigh Lakes) on the Gold Coast, Australia. The gates of this structure open four times each day (once during each semi-diurnal tidal phase) and remain open for a period of 2 hours, allowing alternative and partial exchange between the two water bodies. To gain a better understanding of the dynamics of each waterbody under the influence of the structure, a series of detailed field experiments were initially undertaken to understand and quantify the exchange of water and its mixing ability. Tide gauges deployed within the lake indicated a water level change during each opening of up to 22 cm, equating to 413,600 m3 of water entering the lake over the 2 hour discharge period. Salinity profiles showed that the structure permitted the exchange of saline and freshwater between the two systems, during each tidal cycle, in turn maintaining the lake system as a saline (brackish environment). However, the field study also revealed that the controlled exchange of water between the systems perpetuated a permanently stratified environment on both sides of the structure. To simulate the flow dynamics influenced by Structure C, new routines were incorporated into an existing hydrodynamic model (BFHYDRO) within the model's grid and computational code, as part of this thesis. To achieve this, the flow in and out of the hydraulic structure cell (used to represent the hydraulic structure's location within the model grid) was calculated entirely from the local water level gradients on either side of the structure at each time-step, and not prescribed. This was found to be essential for complex tidally-dominated systems, such as the Nerang River. Routines were also developed to replicate the opening and closing times of the gates. Following the development of the methodology, the hydraulic structure cells were tested and applied to simulate the flow through Structure C and the complex exchange between the estuary and lake, in 2 and 3-dimensions. Tests indicated that the opening and closing times of the gates and the calibration of the discharge coefficient (which forms part of the broad-crested weir formula) were the most sensitive parameters to ensure the correct volume of water exchange between the two systems. Statistically, the model-predicted results compared very well with available surface elevation data within the estuary and lake, and thus, quantified the ability of the hydraulic structure cells to simulate the flux between the estuary and lake for each opening. Following the model validation process, results from the existing configuration were compared with hypothetical design alternatives and are documented herein. Further, part of the thesis also explored a practical and effective computer based learning strategy to introduce and teach hydrodynamic and water quality modelling, to the next generation of undergraduate engineering students. To enhance technology transfer a computer based instructional (CBI) aid was specifically developed to assist with the setup, execution and the analysis of models' output, in small easy steps. The CBI aid comprised of a HTML module with links to recorded Lotus Screen cam movie clips. The strategy proved to be a useful and effective approach in assisting the students to complete the project with minimum supervision, and acquire a basic understanding of water quality modelling. Finally, it is anticipated that this new modelling capability and the findings detailed herein will provide managers with a valuable tool to assess the influence of these structures on water circulation for present and future operations within the region. This model can also be set up at other sites to pre-assess various design configurations by predicting changes in current flows, mixing and flushing dynamics that a particular design might achieve, and assist with the selection process before the final selection and construction.

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7

Zigic, Sasha. "A Methodology to Calculate the Time-Varying Flow Through a Hydraulic Structure Connecting Two Water Bodies." Thesis, Griffith University, 2005. http://hdl.handle.net/10072/365304.

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Hydraulic lock structures have been used for hundreds of years to control and maintain water levels in waterways. The most common are gated water regulation structures used to catch and divert water, and form an essential and critical part of many flood control and agricultural schemes. Although there are clear economic advantages to building the structures, they can contribute to major water quality problems for the waterways they influence (i.e. increased residence times and a change in mixing ability). Further, in most cases, the methods previously used to assess how the structures and their operations influence the flow regimes between the two connected systems were limited, thus hydraulic designers rely on simple formulations, existing literature and experience. Consequently, the objectives of this thesis were to undertake a detailed field study and develop a methodology and computer simulation tool to calculate the flow through a hydraulic structure connecting two water bodies so that future designs can be undertaken based upon sound knowledge. To demonstrate the outcomes of this thesis, the methodology and model were applied to an existing hydraulic structure (referred to as Structure C). Structure C is used to connect and exchange water between the tidally dominated section of the Nerang River estuary and an artificial lake system (Burleigh Lakes) on the Gold Coast, Australia. The gates of this structure open four times each day (once during each semi-diurnal tidal phase) and remain open for a period of 2 hours, allowing alternative and partial exchange between the two water bodies. To gain a better understanding of the dynamics of each waterbody under the influence of the structure, a series of detailed field experiments were initially undertaken to understand and quantify the exchange of water and its mixing ability. Tide gauges deployed within the lake indicated a water level change during each opening of up to 22 cm, equating to 413,600 m3 of water entering the lake over the 2 hour discharge period. Salinity profiles showed that the structure permitted the exchange of saline and freshwater between the two systems, during each tidal cycle, in turn maintaining the lake system as a saline (brackish environment). However, the field study also revealed that the controlled exchange of water between the systems perpetuated a permanently stratified environment on both sides of the structure. To simulate the flow dynamics influenced by Structure C, new routines were incorporated into an existing hydrodynamic model (BFHYDRO) within the model's grid and computational code, as part of this thesis. To achieve this, the flow in and out of the hydraulic structure cell (used to represent the hydraulic structure's location within the model grid) was calculated entirely from the local water level gradients on either side of the structure at each time-step, and not prescribed. This was found to be essential for complex tidally-dominated systems, such as the Nerang River. Routines were also developed to replicate the opening and closing times of the gates. Following the development of the methodology, the hydraulic structure cells were tested and applied to simulate the flow through Structure C and the complex exchange between the estuary and lake, in 2 and 3-dimensions. Tests indicated that the opening and closing times of the gates and the calibration of the discharge coefficient (which forms part of the broad-crested weir formula) were the most sensitive parameters to ensure the correct volume of water exchange between the two systems. Statistically, the model-predicted results compared very well with available surface elevation data within the estuary and lake, and thus, quantified the ability of the hydraulic structure cells to simulate the flux between the estuary and lake for each opening. Following the model validation process, results from the existing configuration were compared with hypothetical design alternatives and are documented herein. Further, part of the thesis also explored a practical and effective computer based learning strategy to introduce and teach hydrodynamic and water quality modelling, to the next generation of undergraduate engineering students. To enhance technology transfer a computer based instructional (CBI) aid was specifically developed to assist with the setup, execution and the analysis of models' output, in small easy steps. The CBI aid comprised of a HTML module with links to recorded Lotus Screen cam movie clips. The strategy proved to be a useful and effective approach in assisting the students to complete the project with minimum supervision, and acquire a basic understanding of water quality modelling. Finally, it is anticipated that this new modelling capability and the findings detailed herein will provide managers with a valuable tool to assess the influence of these structures on water circulation for present and future operations within the region. This model can also be set up at other sites to pre-assess various design configurations by predicting changes in current flows, mixing and flushing dynamics that a particular design might achieve, and assist with the selection process before the final selection and construction.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Engineering
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8

Gray, Michael Alan. "Detection And Quantification Of Karenia Brevis By Carbon Fixation Gene Expression Analysis." Scholar Commons, 2004. https://scholarcommons.usf.edu/etd/1053.

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Karenia brevis (Davis cf. Hansen & Moestrup = Gymnodinium breve) is the non-peridinin containing dinoflagellate responsible for many harmful algal blooms (red tides) in the Gulf of Mexico. These recurrent blooms can have significant negative ecological, economic, and human health impacts including fish kills, tainting of shellfish, poisoning of marine mammals, loss of tourism revenue due to beach closures, and respiratory distress and food poisoning in humans. A method for detection of Karenia brevis was developed based upon amplification of the mRNA for the plastid-encoded gene of the carbon fixing enzyme ribulose 1, 5-bisphosphate carboxylase/oxygenase (RuBisCO) large subunit (rbcL). Using sequence information from a primer set targeting a 554-bp region of the Karenia rbcL gene, a small (91 bp amplicon) primer and probe set was created for TaqMan(registered trademark) real time RT-PCR of K. brevis rbcL. The primer/probe set is sensitive to as little as 0.1 fg of target transcript and as little as 1 pg of total cellular K. brevis RNA extract, corresponding to less than 1 cell reaction-1. The primer/probe set did not amplify rbcL transcript from any of the non-target algae tested. Bloom samples analyzed by this method have shown the assay to be a reliable method, with effective enumeration and a linear relationship showing good correlation to the cell counts by microscopy (r2= 0.8344). The assay has been shown to be robust and perform well even in non-ideal conditions, with pre-extraction RNA from unialgal culture stable at room temperature for up to 3 days and up to a month at -80 degrees C in Stratagene's lysis buffer. The transcription of the rbcL gene demonstrated minor variation throughout the diel period, however the variation was not linked to the diel cycle or to carbon fixation, which showed a distinct diel signal. Due to the relatively constant expression of the rbcL gene, the real-time RT-PCR assay developed should be able to reliably enumerate K. brevis populations in the natural environment, as long as the sample is placed in Stratagene's lysis buffer and processed within one or two days or frozen at -80 degrees C and processed within a month.

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9

García, Antonio. "Parallel time varying volume rendering on tile displays." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1135801433.

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10

Garcia, Antonio. "Parallel time varying volume rendering on tile displays." The Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1135801433.

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11

Grelsson, David. "Tile Based Procedural Terrain Generation in Real-Time : A Study in Performance." Thesis, Blekinge Tekniska Högskola, Institutionen för kreativa teknologier, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5409.

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Context. Procedural Terrain Generation refers to the algorithmical creation of terrains with limited or no user input. Terrains are an important piece of content in many video games and other forms of simulations. Objectives. In this study a tile-based approach to creating endless terrains is investigated. The aim is to find if real-time performance is possible using the proposed method and possible performance increases from utilization of the GPU. Methods. An application that allows the user to walk around on a seemingly endless terrain is created in two versions, one that exclusively utilizes the CPU and one that utilizes both CPU and GPU. An experiment is then conducted that measures performance of both versions of the application. Results. Results showed that real-time performance is indeed possible for smaller tile sizes on the CPU. They also showed that the application benefits significantly from utilizing the GPU. Conclusions. It is concluded that the tile-based approach works well and creates a functional terrain. However performance is too poor for the technique to be utilized in e.g. a video game.

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12

Khan, Shahbaz. "Reappraisal of steady state and time-variant analysis of tile drainage systems." Thesis, University of Birmingham, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.690128.

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13

Scannell, Paddy. "Broadcasting and time." Thesis, University of Westminster, 2006. https://westminsterresearch.westminster.ac.uk/item/9273v/broadcasting-and-time.

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This thesis brings together work I have published in the last five years in academic journals and edited book collections. All the material presented in the thesis, much of it substantially rewritten, will appear in the trilogy I have been working on since my last published book, Radio, Television and Modern Life (Blackwell 1996). The organising structure of the thesis and its substantive concerns corresponds with that of the three books that will come out of it. The form and content of the thesis, and its relation to the books, is discussed in some detail in its introduction. Its fundamental concern is with human time which I have explored in all my writings since I began research thirty years ago, with my late friend and colleague David Cardiff, into the early history of the British Broadcasting Corporation. The medium of radio is time. Historiography deals with past time. The academic work of writing history on the other, and the temporality of radio and television on the one hand, are the first two themes of this thesis which shows that the orders of time in which they work are divergent rather than convergent. The third section of the thesis attempts their reconciliation through the recovery of meaningful time.

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14

Karjalainen, Max. "Real-Time Estimation of Tire Stiffness." Thesis, Linköpings universitet, Fordonssystem, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-130878.

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A tire is an essential part on a vehicle. Different tires have different properties, and one of them is the longitudinal stiffness of the tire. Tire stiffness can be explained by modelling the tire as small thread compounds. These small thread compounds will have contact with the surface and will contain one adhesion and one sliding region. The slip is the motion of the thread compounds relative to the surface. The forces that act on the thread compounds are divided by slip and this is defined as tire stiffness. This thesis presents a method to estimate the tire stiffness in real-time. By using different algorithms, such as Recursive Least Squares and Least Mean Square, a good approximation of the tire stiffness can be achieved.

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15

Xu, Su. "Techniques for Real-Time Tire Health Assessment and Prognostics under Dynamic Operating Conditions." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1318607916.

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16

Ramanata, Peeroon Pete. "Optimal Vehicle Path Generator Using Optimization Methods." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36615.

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This research explores the idea of developing an optimal path generator that can be used in conjunction with a feedback steering controller to automate track testing experiment. This study specifically concentrates on applying optimization concepts to generate paths that meet two separate objective functions; minimum time and maximum tire forces.

A three-degree-of freedom vehicle model is used to approximate the handling dynamics of the vehicle. Inputs into the vehicle model are steering angle and longitudinal force at the tire. These two variables approximate two requirements that are essential in operating a vehicle. The Third order Runge-Kutta integration routine is used to integrate vehicle dynamics equations of motion. The Optimization Toolbox of Matlab is used to evaluate the optimization algorithm. The vehicle is constrained with a series of conditions, includes, a travel within the boundaries of the track, traction force limitations at the tire, vehicle speed, and steering.

The simulation results show that the optimization applied to vehicle dynamics can be useful in designing an automated track testing system. The optimal path generator can be used to develop meaningful test paths on existing test tracks. This study can be used to generate an accelerated tire wear test path, perform parametric study of suspension geometry design using vehicle dynamics handling test data, and to increase repeatability in generating track testing results.

Vita removed at author's request. GMc 3/13/2013
Master of Science

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17

Subramanian, Chidambaram. "Real-Time Implementation of Road Surface Classification using Intelligent Tires." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/101014.

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The growth of the automobile Industry in the past 50 years is radical. The development of chassis control systems have grown drastically due to the demand for safer, faster and more comfortable vehicles. For example, the invention of Anti-lock Braking System (ABS) has resulted in saving more than a million lives since its adaptation while also allowing the vehicles to commute faster. As we move into the autonomous vehicles era, demand for additional information about tire-road interaction to improve the performance of the onboard chassis control systems, is high. This is due to the fact that the interaction between the tire and the road surface determines the stability boundary limits of the vehicles. In this research, a real-time system to classify the road surface into five major categories was developed. The five surfaces include Dry Asphalt, Wet Asphalt, Snow, and Ice and dry Concrete. tri-axial accelerometers were placed on the inner liner of the tires. An advanced signal processing technique was utilized along with a machine learning model to classify the road surfaces. The instrumented Volkswagen Jetta with intelligent tires was retrofitted with new instrumentation for collecting data and evaluating the performance of the developed real-time system. A comprehensive study on road surface classification was performed in order to determine the features of the classification algorithm. Performance of the real-time system is discussed in details and compared with offline results.
Master of Science

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18

Langkau, Katharina. "Flows over time with flow dependent transit times." [S.l.] : [s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=968912656.

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19

Park, Chang Yun. "Predicting deterministic execution times of real-time programs /." Thesis, Connect to this title online; UW restricted, 1992. http://hdl.handle.net/1773/6978.

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20

Lundkvist, Henrik. "Robust Vehicle Routing in an Urban Setting." Thesis, KTH, Optimeringslära och systemteori, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-186248.

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In this thesis, the vehicle routing problem with stochastic, and time dependent, travel times is studied. The stochastic travel times are estimated from historical drive data. The variation of the drive times, as well as that of the variance, during the day was modeled. The purpose of the thesis was to propose a method of handling the congestion related traffic impediments in an urban setting. Since the majority of times of delivery in the empirical test cases studied correlate with the time period of high traffic load, an efficient and robust handling of such traffic scenarios is of high importance. It is shown that the stochastic models will shift the estimated arrivals to customers from the more volatile early and late extremes to more central regions of the time window. Previously delivered routes were evaluated both with the standard algorithm and the proposed stochastic algorithm. The difference between the actual drive times and the calculated drive times were analyzed by studying the correlation of the drive times between each customer in the route. It was shown that the routes of the proposed stochastic method increased this correlation. The drive times between nodes where also perturbed with a Gamma distributed noise. The results from the stochastic algorithm showed higher resilience to this disturbance than did the deterministic models.
I detta examensarbete har fordonsruttningsproblemet, VRP, med stokastiska och tidsberonds körtider behandlöats. De stokastiska körtiderna har estimerats från tidigare insamlad hasighetsdata. Modeller för körtidernas och variansernas förändring under dagen har tagits fram. Syftet med examensarbetet var att föreslå en metod för hur påverkan på körtider av förutsägbar trafikträngsel i en urban trafikmiljö kan hanteras. Eftersom huvuddelen av alla leveranser sammanfaller med de tider på dygnet då trafikbelastning är som högst, ar är en effektiv och robust metod för att hantera sådana störningar av stor vikt. Det visas att den stokastiska modellen kommer att förflyttar ankomster från början och slutet av tidsfönstret till den mer okänsliga mittregionen. Tidigare, utförda leveranser studerades både med den ursprungliga deterministiska modellen och här framtagna stokastiska modellen. Skillnaden mellan de två analyserades genom att studera korrelationen mellan körtiderna som de beräknats av de två modellerna och de upmätta tiderna som de loggats av leveransfordonen. Det visas att korrelationen mellan körtiderna mellan de stokastiska körtiderna och de verkliga körtiderna är högre än korrelationen mellan de deterministiska körtiderna och de verkliga. Rutterna som föreslagits av den stokastiska modellen var också mer tlig mot störningar.

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21

Gynther, Caroline. "En annan tid : Ett kematorium på norra begravningsplatsen." Thesis, KTH, Arkitektur, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-168625.

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Vi tenderar att tänka på tiden som att den går framåt, framåt längs en linje. Vi glömmer lätt bort att vår linjära tidsuppfattning bara är en konstruktion, så självklar för vår verklighetsuppfattning att den lätt förväxlas med verkligheten själv. Synen på tiden har förändrats radikalt genom historien, vilket illustreras väl av de olika sätt man har mätt tid på i olika århundraden. Fram till och med senmedeltiden upplevde människor tiden som ett oavbrutet flöde. Man försökte mäta tiden genom att imitera dess oavbrutna ström, tex som ett föde av vatten eller sand, som i fallet med timglaset. Med dessa metoder gick det inte att mäta längre tidsperioder. Det var först när man slutade tänka på tiden som en kontinuerlig ström och istället som en följd av enheter och perioder som man kunde mäta längre tidsperioder, med uppfiningen av det mekaniska uret. Vi har gått från en tid som var styrd av naturen, konkret och cirkulär till en tid som är linjär, mekanisk och helt abstrakt.
We tend to believe that time moves forward. Our perception of time is easily misunderstood as the reality itself. It is helpful to remember that throughout history one have perceived time in quite many different ways. Thus there has been varies of ways of measuring time. Until the late Middle Ages, people experienced time as a constant flow. Consequently time was measured by imitating this constant flow, for example by a stream of sand, as is the case with the hourglass. With these methods one could never measure a longer period of time. It was not until the conception of time changed and time was perceived as sequences of units and periods that it was possible to measure time for longer periods, with the invention of the mechanical clock. Time was once perceived as circular and controlled by nature; today it has become something mechanical, linear and rather abstract.

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22

Thumu, Prashanth. "TIME CONDITION SYSTEMS." UKnowledge, 2005. http://uknowledge.uky.edu/gradschool_theses/374.

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The current thesis considers the issue of state estimation of condition systems, a form of petri net with signal inputs and outputs. In previous research the problem of unobservability due to progress confusion was identified, in the presence of which state estimation is not possible. Here we introduce the notion of Time Condition Systems", a class of condition systems that uses timing information from condition models to overcome state estimation problem caused by progress confusion. To make use of the timing information in the plant model, a procedure called Exploded Time Plant" is synthesized. This procedure makes the plant model an observable model. It is proved that this procedure does not alter the structural and temporal behavior of the plant model and the plant maintains its integrity. The time plant(s) and the corresponding Exploded time plant(s) are subsequently used to develop observer(s) and controller(s) for Time condition models.

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23

Jönsson, Andreas. "The Importance of Time in Charles Dickens' Hard Times." Thesis, Högskolan i Gävle, Institutionen för humaniora och samhällsvetenskap, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-4017.

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The purpose of the essay is to illustrate the differences in understanding and comprehension of time among the characters in the novel Hard Times. These contrasting differences are then argued to compose a crtisism of the industrial society.

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24

Martinoty, Laurine. "Intrahousehold Allocation of Time and Consumption during Hard Times." Thesis, Lyon, École normale supérieure, 2015. http://www.theses.fr/2015ENSL1021/document.

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Les conséquences des chocs économiques négatifs sur les ménages ont été documentés extensivement, mais on en sait beaucoup moins sur la manière dont ces chocs sont transmis aux individus à travers la médiation du ménage. Le ménage contribue-il à modérer l'effet des chocs négatifs ? Dans quelle mesure le choc économique pèse-t-il dans la négociation familiale ? À partir de données sur la crise économique argentine de 2001, je montre d'abord que les femmes en couple ont une plus grande probabilité de devenir actives si leur mari a fait l'expérience d'un choc de revenu. Ensuite, je montre que le cycle économique importe dans les décisions d'investissement en capital humain. Sur le long terme, les profils de salaire et d'employabilité des hommes argentins sont affectés de manière persistante par les conditions économiques initiales au moment de l'obtention du diplôme. Enfin, je considère la dimension “man-cession” de la crise économique de 2009 en Espagne et montre que la part des ressources du ménage reçues par les femmes pour leur consommation privée augmente avec la diminution de l'écart des taux de chômage hommes-femmes, confortant l'hypothèse que les chocs négatifs modifient le pouvoir de négociation des individus au sein du ménage
The consequences of adverse aggregate shocks on households have been repeatedly documented, but far less has been said on the way they are passed over to individuals through the mediation of the household. Does the household contribute in mitigating the effects? Or does the economic shock rather invite itself at the family negociating table? Using the Argentine 2001 economic crisis as a natural experiment, I first show that married women are more likely to enter the labor market if their husband experienced a loss in income, giving credit to the insurance mechanism. Then, I show that the business cycle matters for investments in education, and that long run labor outcomes of Argentine men are persistently affected by the initial conditions upon graduation. Finally, I consider the “Mancession” dimension of the Great Recession in Spain and demonstrate that the resource share accruing to wives for own consumption increases together with the decreasing unemployment gap, which comes in support to the bargaining hypothesis

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25

Shin, Pearl Hae-Jin. "Time and phenomenology of time consciousness." Thesis, The University of Sydney, 2014. http://hdl.handle.net/2123/13708.

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Time, evanescence, and impermanence are basic concepts and have a strong presence in my work. In my photographic works, the outside natural world can be the natural painting itself and I store landscapes in my camera to print out to show as the final artwork. My final project will be a series of landscape photographs which will be focused on the natural environment related to the passage of time. All my photographs were taken in different places around the Sydney region. My photographs will be exhibited as a series of images. The Postgraduate degree exhibition will be held in Sydney College of the Arts on 4th December to 10th December, 2014. This research paper will focus on the concept of time and phenomenology, while outlining the importance of time consciousness. This is closely based on the proposed philosophy of time consciousness and being and time by Edmund Husserl (1859-1938) and Martin Heidegger (1889-1976), respectively. Phenomenology is the study of phenomena as experienced by the individual, and is a discipline of philosophy. Drawing from these ideas, the intention of this research paper is to understand the presence of how photography has been concerned with experience of time according to phenomenology and time consciousness. In Chapter One, the main ideas have been proposed through Husserl’s theory on “temporal horizon” and analysing consciousness as the flow of phenomena to support the paper. Chapter Two will present different artists works and it addresses their individual ideas on phenomenology and time. In Chapter Three, broad philosophical ideas of time relation to base on essay “On Photography” by Susan Sontag (1933-2004). The last chapter will concentrate on my previous artworks and current photograph works to understand relevant ideas on photograph in relation to phenomenology of time consciousness. The findings of this research provide an understanding of how we consciously experience time in our world and give clear ideas of time and phenomenological time consciousness to demonstrate my photographs.

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CALAZANS, DIEGO JOSE DE. "TIME OR NON-TIME?: A STUDY ABOUT THE EXPERIENCE OF TIME AND THE NON-TIME OF THE EXPERIENCE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2007. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=10314@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
Este é um estudo acerca da natureza ontológica do tempo, ou seja, um estudo que visa distinguir, no âmbito da experiência, o tempo subjetivo do tempo em si mesmo, tentando delimitá-los por critérios de necessidade lógica e adequação formal as criticas e descobertas da filosofia e da ciência moderna e contemporânea. O trabalho consta também de um apanhado historiográfico das principais abstrações da ciência, bem como, das principais contribuições de filósofos, como, p.ex., Santo Agostinho e Kant, para a questão do tempo, abarcando também as criticas da física contemporânea ao paradigma clássico do tempo e as novas tendências de abordagem e pesquisa da questão do tempo no século XXI.
This is an essay on the ontologic nature of time, so to say, a study that intends to distinguish, inside the realm of experience, the subjective time from time itself, trying to bound both of them by logical necessity and formal adequation to the critics and discoveries from modern and contemporary philosophy and science. This essay also provides an historiographic resume of the main abstractions from sciense, as well as, the main contributions from philosophers, like Saint Augustine and Kant, for example, to the problem of time, approaching also the critics of contemporay physics to the classical time paradigm and the new trends of approach and research of time in the XXI century.

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Keller, Peter, Sylvie Roelly, and Angelo Valleriani. "On time duality for quasi-birth-and-death processes." Universität Potsdam, 2012. http://opus.kobv.de/ubp/volltexte/2012/5697/.

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We say that (weak/strong) time duality holds for continuous time quasi-birth-and-death-processes if, starting from a fixed level, the first hitting time of the next upper level and the first hitting time of the next lower level have the same distribution. We present here a criterion for time duality in the case where transitions from one level to another have to pass through a given single state, the so-called bottleneck property. We also prove that a weaker form of reversibility called balanced under permutation is sufficient for the time duality to hold. We then discuss the general case.

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28

Feld, Timo [Verfasser]. "Response time analyses of adaptive variable-rate-tasks / Timo Feld." Ulm : Universität Ulm, 2020. http://d-nb.info/1203716273/34.

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29

Dong, Zhaoqing Sabrina 1977. "Hardware-assisted timer protocol for high resolution global time synchronization." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/86639.

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Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
Includes bibliographical references (leaf 114).
by Zhaoqing Sabrina Dong.
M.Eng.

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30

Dubasi, Mohana Asha Latha. "Timed Refinement for Verification of Real-Time Object Code Programs." Diss., North Dakota State University, 2018. https://hdl.handle.net/10365/31372.

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Real-time systems such as medical devices, surgical robots, and microprocessors are safety-critical applications that have hard timing constraint. The correctness of real-time systems is important as the failure may result in severe consequences such as loss of money, time and human life. These real-time systems have software to control their behavior. Typically, this software has source code which is converted to object code and then executed in safety-critical embedded devices. Therefore, it is important to ensure that both source code and object code are error-free. When dealing with safety-critical systems, formal verification techniques have laid the foundation for ensuring software correctness. Refinement based technique in formal verification can be used for the verification of real-time interrupt-driven object code. This dissertation presents an automated tool that verifies the functional and timing correctness of real-time interrupt-driven object code programs. The tool has been developed in three stages. In the first stage, a novel timed refinement procedure that checks for timing properties has been developed and applied on six case studies. The required model and an abstraction technique were generated manually. The results indicate that the proposed abstraction technique reduces the size of the implementation model by at least four orders of magnitude. In the second stage, the proposed abstraction technique has been automated. This technique has been applied to thirty different case studies. The results indicate that the automated abstraction technique can easily reduce the model size, which would in turn significantly reduce the verification time. In the final stage, two new automated algorithms are proposed which would check the functional properties through safety and liveness. These algorithms were applied to the same thirty case studies. The results indicate that the functional verification can be performed in less than a second for the reduced model. The benefits of automating the verification process for real-time interrupt-driven object code include: 1) the overall size of the implementation model has reduced significantly; 2) the verification is within a reasonable time; 3) can be applied multiple times in the system development process.
Several parts of this dissertation were funded by a grant from the United States Government and the generous support of the American people through the United States Department of State and the United States Agency for International Development (USAID) under the Pakistan – U.S. Science & Technology Cooperation Program. The contents do not necessarily reflect the views of the United States Government.

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31

Dooply, Ayoob Eusoof. "Performance optimization of mixed time systems using self-timed logic /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2001. http://wwwlib.umi.com/cr/ucsd/fullcit?p3022181.

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32

Stupak, Noah. "Time-delays and system response times in human-computer interaction /." Online version of thesis, 2009. http://hdl.handle.net/1850/10867.

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33

Ramadian, Yusi. "Parametric Real-Time System Feasibility Analysis Using Parametric Timed Automata." Doctoral thesis, Università degli studi di Trento, 2012. https://hdl.handle.net/11572/368709.

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Real-time applications are playing an increasingly significant role in our life. The cost and risk involved in their design leads to the need for a correct and robust modelling of the system before its deployment. Many approaches have been proposed to verify the schedulability of real-time task system. A frequent limitation is that they force the task activation to restrictive patterns (e.g. periodic). Furthermore, the type of analysis carried out by the real-time scheduling theory relies on restrictive assumptions that could make the designers miss important optimization opportunities. On the other hand, the application of formal methods for verification of timed systems typically produces a yes/no answer that does not suggest any correction action or robustness margins of a given design. This work proposes an approach to combine the benefits of formal method in terms of flexibility with the production of a clear feedback for the designers. The key idea is to use parametric timed automata to enable the definition of flexible task activation patterns. The Parametric Verification of Temporal Properties (PTVP) algorithm proposed in this work produces a region of feasible parameters for realtime system. All the parameter valuation within this region is guaranteed to make the system respect the desired temporal behaviour. In this way developers are provided with a richer information than the simple feasibility of a given design choice. This method uses symbolic model checking technique to produce the result that is a union of polyhedral regions in the parameter space associated with feasible parameters. It is implemented in the tool Quinq that is based on NuSMV3. The tool also implemented an optimization to speed up the search, such as using non-parametric model checker to find counterexamples (i.e. traces) related to the unfeasible choices of parameters. Two applications of the tool and of the underlying method to several real-time system examples are presented in this dissertation : periodic real-time system tasks with offset and heterogeneous distributed real-time systems. A work that applies the tool in collaboration with another real-time system analysis tool, Modular Performance Analysis Toolbox, is also presented to show one of the many possible application of the method presented in this work. In this work we also compare our approach to the state of the art in the field of sensitivity analysis of real-time systems. However, compared to the other tools and approaches in this field, the method offered in this work presents unique advantages in the generality of the system modelling approach and the possibility to analyse the entire region of feasibility of any desired parameter in the system.

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34

Ramadian, Yusi. "Parametric Real-Time System Feasibility Analysis Using Parametric Timed Automata." Doctoral thesis, University of Trento, 2012. http://eprints-phd.biblio.unitn.it/763/1/Dissertation.pdf.

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Real-time applications are playing an increasingly significant role in our life. The cost and risk involved in their design leads to the need for a correct and robust modelling of the system before its deployment. Many approaches have been proposed to verify the schedulability of real-time task system. A frequent limitation is that they force the task activation to restrictive patterns (e.g. periodic). Furthermore, the type of analysis carried out by the real-time scheduling theory relies on restrictive assumptions that could make the designers miss important optimization opportunities. On the other hand, the application of formal methods for verification of timed systems typically produces a yes/no answer that does not suggest any correction action or robustness margins of a given design. This work proposes an approach to combine the benefits of formal method in terms of flexibility with the production of a clear feedback for the designers. The key idea is to use parametric timed automata to enable the definition of flexible task activation patterns. The Parametric Verification of Temporal Properties (PTVP) algorithm proposed in this work produces a region of feasible parameters for realtime system. All the parameter valuation within this region is guaranteed to make the system respect the desired temporal behaviour. In this way developers are provided with a richer information than the simple feasibility of a given design choice. This method uses symbolic model checking technique to produce the result that is a union of polyhedral regions in the parameter space associated with feasible parameters. It is implemented in the tool Quinq that is based on NuSMV3. The tool also implemented an optimization to speed up the search, such as using non-parametric model checker to find counterexamples (i.e. traces) related to the unfeasible choices of parameters. Two applications of the tool and of the underlying method to several real-time system examples are presented in this dissertation : periodic real-time system tasks with offset and heterogeneous distributed real-time systems. A work that applies the tool in collaboration with another real-time system analysis tool, Modular Performance Analysis Toolbox, is also presented to show one of the many possible application of the method presented in this work. In this work we also compare our approach to the state of the art in the field of sensitivity analysis of real-time systems. However, compared to the other tools and approaches in this field, the method offered in this work presents unique advantages in the generality of the system modelling approach and the possibility to analyse the entire region of feasibility of any desired parameter in the system.

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35

Banachowski, Scott. "CPU time-sharing in real-time systems /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2005. http://uclibs.org/PID/11984.

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36

Milton, Robert. "Time-series in distributed real-time databases." Thesis, University of Skövde, Department of Computer Science, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-827.

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In a distributed real-time environment where it is imperative to make correct decisions it is important to have all facts available to make the most accurate decision in a certain situation. An example of such an environment is an Unmanned Aerial Vehicle (UAV) system where several UAVs cooperate to carry out a certain task and the data recorded is analyzed after the completion of the mission. This project aims to define and implement a time series architecture for use together with a distributed real-time database for the ability to store temporal data. The result from this project is a time series (TS) architecture that uses DeeDS, a distributed real-time database, for storage. The TS architecture is used by an application modelled from a UAV scenario for storing temporal data. The temporal data is produced by a simulator. The TS architecture solves the problem of storing temporal data for applications using DeeDS. The TS architecture is also useful as a foundation for integrating time series in DeeDS since it is designed for space efficiency and real-time requirements.

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37

Lam, Vai Iam. "Time domain approach in time series analysis." Thesis, University of Macau, 2000. http://umaclib3.umac.mo/record=b1446633.

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Scott, Mark Alan. "Time-to-time information in interceptive tasks." Thesis, Manchester Metropolitan University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264712.

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39

Chetthamrongchai, Paitoon. "Time orientation and time use in shopping." Thesis, University of Manchester, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.496483.

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Previous work on shopping behaviour can be catergorised into three themes. Work has been done to identify different motivations for shopping, developing the original thinking of Stone, (1954) and Tauber, (1972). Work has been done on retail patronage, examining shopping behaviour from the image promoted by retailers, building upon the original work of Matineau, (1958) and Lindquist, (1974). A third body of work, somewhat less coherent, contains a collection of different models of patronage, the most relevant here being that concerned with retail location, based on the work of Huff, (1964) and Christall and Loch, (1930) where patronage is seen to decline with distance. This thesis draws mainly from the perspective in the first theme. It takes as its starting point the concept of the individual being an allocator of time as well as money. People are seen as being motivated in their allocation of time to activities such as shopping by their time orientation. This in tum creates different attitudes to shopping which influences shopping behaviour. Previous work on time attitude and shopping behaviour has tended to emphasise solely time pressure and time saving as being linked (Berry, 1979), although others have seen time orientation as more complex (Gronmo, 1989 and Graham, 1981). A framework is developed that links attitude to time to attitude to shopping and then to actual shopping behaviour. The main contribution from the thesis is in the development and testing ofthis framework. 12 Attitudes to time are claimed to be culture specific (Graham, 1981 and Sheth and Hirshman, 1987) and so the framework is tested in two countries, Britain and Thailand. A questionnaire was developed to measure time attitude, shopping attitude and shopping behaviour in the context of food shopping. This was applied in Blackburn and Bangkok. Factor analysis is used to identify time and shopping attitudes. These are correlated with shopping behaviour specifically time spent shopping, shopping frequency, time of the day used for shopping and the patronage of individual outlets. Cluster analysis is used based upon the time and shopping factors to identify four market segments in each country. Comparisons are made between the results from each study. Although the results contain certain similarities, there are also significant differences that may be linked to differences in attitudes to time between the two countries. The main conclusion from the research is that the time perspective is useful in understanding consumer psychology and patronage behaviour. The results show that time orientation plays an important role in segmenting consumer markets. There are a number of theoretical and practical implications. The conceptualisation of time attitude being linked to patronage behaviour makes a significant contribution to marketing theory. The thesis shows that time orientation and shopping motivation are valuable dimensions in understanding consumer shopping behaviour.

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40

Morrill, Jeffrey P., and Jonathan Delatizky. "REAL-TIME RECOGNITION OF TIME-SERIES PATTERNS." International Foundation for Telemetering, 1993. http://hdl.handle.net/10150/608854.

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International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, Nevada
This paper describes a real-time implementation of the pattern recognition technology originally developed by BBN [Delatizky et al] for post-processing of time-sampled telemetry data. This makes it possible to monitor a data stream for a characteristic shape, such as an arrhythmic heartbeat or a step-response whose overshoot is unacceptably large. Once programmed to recognize patterns of interest, it generates a symbolic description of a time-series signal in intuitive, object-oriented terms. The basic technique is to decompose the signal into a hierarchy of simpler components using rules of grammar, analogous to the process of decomposing a sentence into phrases and words. This paper describes the basic technique used for pattern recognition of time-series signals and the problems that must be solved to apply the techniques in real time. We present experimental results for an unoptimized prototype demonstrating that 4000 samples per second can be handled easily on conventional hardware.

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41

Rivera, Monica Alexandra. "Slowing Down Time, studies on spatial time." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/33992.

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The experience of time is not fixed by a rigid mathematical measure, instead, it flows at vaying rates. There are certain occasions in which we would like to extend time with all our force, up to the limit of our stretched arms and further. Conversely there are moments which we'd like to last no more that the sparkle of a flash, but as we all have noticed, those are the longest in our life. How does the space that we inhabit influence on our perception of time? May we identify especial elements that contribute in one or other sense to accelerate or slowdown the time? It's said that time and space is an inseparable unity, as two aspects of the same thing. If this is so, then it also must be true that by shaping space in one way or another, we might influence the experience of time through it. Wouldn't it be delightful to believe that we may be magicians of time through manipulation of architecture?
Master of Architecture

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42

Leijon, Viktor. "A time constrained real-time process calculus /." Luleå : EISLAB, Department of Computer Science and Electrical Engineering, Luleå University of Technology, 2008. http://epubl.ltu.se/1402-1757/2008/33/.

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43

Medhurst, Pamela Wendy. "Part-time study, full-time lives : stories of success from part-time undergraduate students." Thesis, University of Hull, 2008. http://hydra.hull.ac.uk/resources/hull:1748.

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This thesis is concerned with part-time undergraduate students within the higher education system in England. In particular it focusses on the strategies this group of students employ to complete their degrees successfully. I place the experience of successful part-time students at the heart of the thesis because I think that it is vital in the twenty-first century to further our understanding of this heterogeneous group in order to have an accessible higher education system that does not by design discriminate against those who choose a particular mode of study. By doing this I create a collective narrative for part-time students. A small qualitative sample of completed part-time undergraduate students was interviewed to produce the data used herein.

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Wegner, Maus Victor, Gilberto Camara, Marius Appel, and Edzer Pebesma. "dtwSat: Time-Weighted Dynamic Time Warping for Satellite Image Time Series Analysis in R." Foundation for Open Access Statistics, 2019. http://epub.wu.ac.at/6808/1/v88i05.pdf.

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The opening of large archives of satellite data such as LANDSAT, MODIS and the SENTINELs has given researchers unprecedented access to data, allowing them to better quantify and understand local and global land change. The need to analyze such large data sets has led to the development of automated and semi-automated methods for satellite image time series analysis. However, few of the proposed methods for remote sensing time series analysis are available as open source software. In this paper we present the R package dtwSat. This package provides an implementation of the time-weighted dynamic time warping method for land cover mapping using sequence of multi-band satellite images. Methods based on dynamic time warping are flexible to handle irregular sampling and out-of-phase time series, and they have achieved significant results in time series analysis. Package dtwSat is available from the Comprehensive R Archive Network (CRAN) and contributes to making methods for satellite time series analysis available to a larger audience. The package supports the full cycle of land cover classification using image time series, ranging from selecting temporal patterns to visualizing and assessing the results.

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Swan, Paul, and Linda Marshall. "Mathematics games: Time wasters or time well spent?" Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-80997.

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Globally education authorities are placing increasing emphasis on the development of literacy and numeracy in primary schools. This paper reports on research designed to assist teachers to improve the numeracy of their students by making the use of mathematics games a more focused aspect of the teaching and learning experience in mathematics. Classroom experience and anecdotal evidence suggest that games are often used without really focussing on the mathematics involved in playing the game,and are justified simply on the basis of children having ‘fun’. In this paper we report on the use of one game, Numero and how teachers made use of the game and the impact on the children’s learning when using the game.

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Zhou, Yongjun. "Execution time analysis for dynamic real-time systems." Ohio : Ohio University, 2002. http://www.ohiolink.edu/etd/view.cgi?ohiou1175011592.

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47

Jerbi, Ali. "Adaptive control of time-varying discrete-time systems." Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/15743.

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48

Tauchert, Ashley. "Mary Wollstonecraft in her time and our time." Thesis, University College London (University of London), 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264200.

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49

Bos, Machiel Simon. "Ocean tide loading using improved ocean tide models." Thesis, University of Liverpool, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343980.

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50

Cuevas, Tello Juan Carlos. "Estimating time delays between irregularly sampled time series." Thesis, University of Birmingham, 2007. http://etheses.bham.ac.uk//id/eprint/88/.

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The time delay estimation between time series is a real-world problem in gravitational lensing, an area of astrophysics. Lensing is the most direct method of measuring the distribution of matter, which is often dark, and the accurate measurement of time delays set the scale to measure distances over cosmological scales. For our purposes, this means that we have to estimate a time delay between two or more noisy and irregularly sampled time series. Estimations have been made using statistical methods in the astrophysics literature, such as interpolation, dispersion analysis, discrete correlation function, Gaussian processes and Bayesian method, among others. Instead, this thesis proposes a kernel-based approach to estimating the time delay, which is inspired by kernel methods in the context of statistical and machine learning. Moreover, our methodology is evolved to perform model selection, regularisation and time delay estimation globally and simultaneously. Experimental results show that this approach is one of the most accurate methods for gaps (missing data) and distinct noise levels. Results on artificial and real data are shown.

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Dissertations / Theses on the topic 'Time and tide'

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