To see the other types of publications on this topic, follow the link: Raised median.

Dissertations / Theses on the topic 'Raised median'

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

Select a source type:

Consult the top 36 dissertations / theses for your research on the topic 'Raised median.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Lewis, Jeff S. "Assessing the Safety Impacts of Access Management Techniques." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1342.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Kim, Kyung Min. "Analysis of Safety Impacts of Access Management Alternatives Using the Surrogate Safety Assessment Model." BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/6629.

Full text
Abstract:
In a traditional safety impact analysis, it is necessary to have crash data on existing roadway conditions in the field and a few years must pass before accumulating reliable crash data. This is a time-consuming approach and there remains uncertainty in the crash data due to the random nature of crash occurrences. The Surrogate Safety Assessment Model (SSAM) was developed for resolving these issues. With SSAM, a conflict analysis is performed in a simulated environment. A planned improvement alternative under study is modeled and no physical installation of the alternative is needed. Hence, the method using a simulation software along with SSAM consumes less time compared to other traditional safety analysis methods that may require a physical installation of the new alternative and a long wait time for data collection. The purpose of this study is to evaluate if SSAM can be used to assess the safety of a highway segment or an intersection in term of the number and type of conflicts and to compare the safety effects of multiple access management alternatives with less time, less cost and less uncertainty than the traditional safety analysis methods. To meet the purpose of the study, two study sections, one on University Parkway in Orem and Provo and the other on Main Street in American Fork were selected and analyzed in this research. Based on the findings from the calibration of SSAM on the University Parkway study section, an evaluation of the effect of converting a TWLTL median into a raised median on a section of Main Street (US-89) from 300 West to 500 East in American Fork was performed using SSAM working on VISSIM simulation's trajectory files of the study section. This evaluation study was conducted to show how SSAM could be used to evaluate the effect of access management alternatives using surrogate safety measures. The analysis showed that a raised median would be much safer than a TWLTL median for the same level of traffic volume. Approximately a 32 to 50 percent reduction in the number of crossing conflicts was achieved when a raised median was used in lieu of a TWLTL median at the Main Street study section.
APA, Harvard, Vancouver, ISO, and other styles
3

Seat, Marlee Lyn. "Using LiDAR Data to Analyze Access Management Criteria in Utah." BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/6329.

Full text
Abstract:
The Utah Department of Transportation (UDOT) has completed a Light Detection and Ranging (LiDAR) data inventory that includes access locations across the UDOT network. The new data are anticipated to be extremely useful in better defining safety and in completing a systemwide analysis of locations where safety could be improved, or where safety has been improved across the state. The Department of Civil and Environmental Engineering at Brigham Young University (BYU) has worked with the new data to perform a safety analysis of the state related to access management, particularly related to driveway spacing and raised medians. The primary objective of this research was to increase understanding of the safety impacts across the state related to access management. These objectives were accomplished by using the LiDAR database to evaluate driveway spacing and locations to aid in hot spot identification and to develop relationships between access design and location as a function of safety and access category (AC). Utah Administrative Rule R930-6 contains access management guidelines to balance the access found on a roadway with traffic and safety operations. These guidelines were used to find the maximum number of driveways recommended for a roadway. ArcMap 10.3 and Microsoft Excel were used to visualize the data and identify hot spot locations. An analysis conducted in this study compared current roadway characteristics to the R930-6 guidelines to find locations where differences occurred. This analysis does not indicate the current AC is incorrect; it simply means that the assigned AC does not meet current roadway characteristic based on the LiDAR data analysis. UDOT can decide what this roadway will become in the future and help shape each segment using the AC outlined in the R930-6. A hierarchal Bayesian statistical before-after model, created in previous BYU safety research, was used to analyze locations where raised medians have been installed. Twenty locations where raised medians were installed in Utah between 2002 to 2014 were used in this model. The model analyzed the raised medians by AC. Only three AC were represented in the data. Regression plots depicting a decrease in crashes before and after installation, posterior distribution plots showing the probability of a decrease in crashes after installation, and crash modification factor (CMF) plots presenting the CMF values estimated for different vehicle miles traveled (VMT) values were all created as output from the before-after model. Overall, installing a raised median gives an approximate reduction of 53 percent for all crashes. Individual AC analysis yielded results ranging from 32 to 44 percent for all severity groups except severity 4 and 5. When the model was only run for crash severity 4 and 5, a larger reduction of 57 to 58 percent was found.
APA, Harvard, Vancouver, ISO, and other styles
4

Thurgood, Daniel J. "Analyzing the Effectiveness of Safety Measures Using Bayesian Methods." BYU ScholarsArchive, 2010. https://scholarsarchive.byu.edu/etd/2453.

Full text
Abstract:
Recent research has shown that traditional safety evaluation methods have been inadequate in accurately determining the effectiveness of roadway safety measures. In recent years, advanced statistical methods have been utilized in traffic safety studies to more accurately determine the effectiveness of roadway safety measures. These methods, particularly hierarchical Bayesian statistical techniques, have the capabilities to account for the shortcomings of traditional methods. Hierarchical Bayesian modeling is a powerful tool for expressing rich statistical models that more fully reflect a given problem than a simpler model could. This paper uses a hierarchical Bayesian model to analyze the effectiveness of two types of road safety measures: raised medians and cable barriers. Several sites where these safety measures have been implemented in the last 10 years were evaluated using available crash data. This study analyzes the effectiveness of raised medians and cable barriers of roadway safety by determining the effect each has on crash frequency and severity at selected locations. The results of this study show that the installation of a raised median is an effective technique to reduce the overall crash frequency and severity on Utah roadways. The analysis of cable barriers showed that cable barriers were effective in decreasing cross-median crashes and crash severity.
APA, Harvard, Vancouver, ISO, and other styles
5

Collingwood, Lisa Hannah. "Privacy protection under the English legal system : is it adequate given the challenges raised by online communicating between individuals?" Thesis, Kingston University, 2013. http://eprints.kingston.ac.uk/28204/.

Full text
Abstract:
This thesis examines whether the approach to privacy protection under the English legal system is adequate given the distinct challenges raised by online communicating between individuals. In doing this, it aims to fulfil three objectives. Firstly, to show that privacy is, regardless of forum, deserving of appropriate legal protection; secondly, that the existing substantive and procedural basis of protection in England and Wales is flawed, since the altered landscape of privacy engendered by the widespread use of new communications media has been insufficiently assimilated into judicial understandings of privacy; and, thirdly, to analyse whether a revised legal structure would better regulate this area of law. The protection of privacy is an emotive topic, not least because the very nature of privacy itself is open to debate. This thesis plays a vital part in untangling what is, without doubt, a complex area of what may be described as the evolving law of privacy. By adopting its contemporary focus, the thesis is able to offer evaluation and critique of the existing law, highlighting where the English legal system is open to challenge and suggesting how an understanding of the metamorphosed notions of privacy engendered by new communications media might lead to its improved protection at law. Given both the importance of privacy protection and the growing prominence of social media platforms, this represents a crucial and timely research test which, it is hoped, will add to an understanding of these contemporary issues and their consequences. Accordingly, the overall contribution made to knowledge by this study is that, by exploring privacy protection against a backdrop of online communications media, it addresses a gap in the available literature. Within this thesis, the author develops a unique framework with which to better comprehend the increasingly novel ways in which privacy may be violated in a technological age and application of this model allows for the constituent parts of privacy violation to be conceptually broken down against the reality of online communications. This, in turn, allows the author to advance various inventive proposals for how privacy might be better safeguarded in the future.
APA, Harvard, Vancouver, ISO, and other styles
6

Militz, Klaus Ulrich. "Media interplay in Rainer Werner Fassbinder's work for theatre, cinema and television." Thesis, University of Edinburgh, 2001. http://hdl.handle.net/1842/23121.

Full text
Abstract:
The work of the West German artist Rainer Werner Fassbinder is as versatile as it is extensive. During the 16 years of his artistic career Fassbinder produced more than forty cinema and television films and also staged 29 plays about half of which he had written himself. In doing so he not only drew an aesthetic traditions as diverse as the German folk play, the American gangster film, Hollywood melodrama, the Theatre of Cruelty, and the French Nouvelle Vague, but also worked in three media simultaneously: theatre, cinema, and television. It has repeatedly been pointed out that this versatility appears to forestall a conceptualisation of Fassbinder's work from the vantage point of its production. The present work aims at exactly such a conceptualisation by exploring the interplay between the director's work for the different media. Right from the beginning of his artistic career Fassbinder based his aesthetic approach on the transposition of aesthetic devices from one medium to the other. Whilst his theatre plays are characterised by a montage of short scenes reminiscent of film editing, his films are marked by a stark theatricality which concerns not only the acting and the entire mise-en-scene, but also the specific ways in which camera work and editing are implemented. In the course of his artistic development Fassbinder later also included the medium of television into this aesthetic exchange, first by turning towards a more balanced aesthetics in his cinema films, conveying a more 'positive' outlook on life as television would provide it, later by carrying many of the devices he had developed in the cinema into his work for television. Thus in each medium Fassbinder breaks with conventional forms of expression and creates new possibilities through media interplay. It is on this basis that Fassbinder achieved the astonishing versatility of his artistic output which is surprising in so far as all of Fassbinder's films are concerned with the same basic issue; the exploitation of feelings.
APA, Harvard, Vancouver, ISO, and other styles
7

Popan, Marin. "L’hyperbate nominale en latin : construction, typologie, raison de texte." Thesis, Toulouse 2, 2012. http://www.theses.fr/2012TOU20050/document.

Full text
Abstract:
Dans sa première partie, cette thèse se propose d’éclairer la portée du terme d’hyperbate chez rhéteurs et grammairiens romains. L’examen montre que ce concept est utilisé dans deux sens distincts : d’abord, l’hyperbate au sens restreint qui n’inclut que l’anastrophe, et la transiectio – disjonction d’un syntagme, en particulier d’un syntagme nominal. Ensuite, l’hyperbate au sens large est utilisée par les grammairiens romains pour désigner cinq espèces qui concernent l’inversion de l’ordre des mots. Chez Julien de Tolède, on rencontre l’emploi du terme d’« hyperbate » aussi pour désigner de longues parenthèses interposées. La première partie du chapitre II de la thèse propose une brève présentation des réflexions sur l’hyperbate dans la tradition philologique et linguistique. Traditionnellement, l’hyperbate est présentée comme une figure de style ; les études modernes se concentre sur l’hyperbate représentant un moyen pragmatique de « mise en relief ». La deuxième partie du chapitre II a pour l’objectif de présenter l’encadrement et le champ médian (séquence de mots insérés) décrits par la linguistique allemande. Le chapitre III propose une étude typologie des mots insérés dans le champ médian et de l’ordre dans lequel ils sont linéarisés. L’étude est fondée sur un corpus de syntagmes nominaux disjoints comportant un génitif et un nom, relevés en particulier chez César, chez Cicéron et dans l’Histoire Auguste. Le champ médian peut être représenté par des mots et des groupes de mots variés, dont le nombre va d’un mot jusqu’à trois ou plus. Les résultats sont résumés dans des tableaux synoptiques
This dissertation, devoted to hyperbaton in Latin, is divided into three chapters. The aim of chapter I is to examine the concept of hyperbaton used by Roman rhetoricians grammarians. It shows that this term is used in two distinct ways. Firstly, hyperbaton in the narrow sense covers anastrophe and transiectio, i.e. a discontinuous phrase, especially a discontinuous noun phrase. Secondly, Roman grammarians conceive hyperbaton in a broad sense for designating five types of inversion of word order. Furthermore, Julian of Toledo adds a type of “long hyperbaton”, i.e. long inserted parentheses. The first part of chapter II provides an overview of reflections about hyperbaton in philological and linguistic literature. Hyperbaton is traditionally regarded as a stylistic figure; however, Modern studies on this topic focus on pragmatic implication of the use of discontinuous phrases. The second part of chapter II presents the concept of framing and median field (sequence of inserted words), developed by German linguistics. Chapter III provides a typology of words inserted into a discontinuous noun phrase formed by a genitive and its head noun. Attention is paid to the order in which inserted elements are linearised. The research is based on a corpus of discontinuous noun phrases collected mainly in Caesar, Cicero, and Historia Augusta. The median field can be formed by various words or groups of words. Examples of median fields with two, three, and more words and their ordering are presented in synoptic tables
APA, Harvard, Vancouver, ISO, and other styles
8

Neuweiler, Insa [Verfasser], and Rainer [Akademischer Betreuer] Helmig. "Scale dependence of flow and transport parameters in porous media / Insa Neuweiler. Betreuer: Rainer Helmig." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2011. http://d-nb.info/1014148502/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Deniffel, Dominik [Verfasser], and Rainer [Akademischer Betreuer] Straub. "Otitis Media und bakterielle Kolonisation des Nasopharynx in CCL3-/- Mäusen / Dominik Deniffel ; Betreuer: Rainer Straub." Regensburg : Universitätsbibliothek Regensburg, 2018. http://d-nb.info/1162339721/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Zhu, Tao Verfasser], Michael [Akademischer Betreuer] Manhart, Rainer [Akademischer Betreuer] Helmig, and Barbara [Akademischer Betreuer] [Wohlmuth. "Unsteady porous-media flows / Tao Zhu. Betreuer: Michael Manhart. Gutachter: Rainer Helmig ; Barbara Wohlmuth ; Michael Manhart." München : Universitätsbibliothek der TU München, 2016. http://d-nb.info/1100159320/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
11

Lauser, Andreas [Verfasser], and Rainer [Akademischer Betreuer] Helmig. "Theory and numerical applications of compositional multi-phase flow in porous media / Andreas Lauser. Betreuer: Rainer Helmig." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2014. http://d-nb.info/1049258762/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
12

Tatomir, Alexandru-Bogdan [Verfasser], and Rainer [Akademischer Betreuer] Helmig. "From discrete to continuum concepts of flow in fractured porous media / Alexandru-Bogdan Tatomir. Betreuer: Rainer Helmig." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2013. http://d-nb.info/103026676X/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
13

Pae, Sang-jun. "Rainer Werner Fassbinder und seine filmästhetische Stilisierung /." Remscheid : Gardez!, 2005. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=014644170&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

Full text
APA, Harvard, Vancouver, ISO, and other styles
14

Schierenberg-Niehues, Sandra [Verfasser], and Rainer [Akademischer Betreuer] Brödel. "Umgangserfahrungen mit Digitalen Medien : eine qualitative Studie aus der Lernerperspektive funktionaler Analphabeten / Sandra Schierenberg-Niehues ; Betreuer: Rainer Brödel." Münster : Universitäts- und Landesbibliothek Münster, 2020. http://d-nb.info/1205807225/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
15

Nuske, Philipp [Verfasser], and Rainer [Akademischer Betreuer] Helmig. "Beyond local equilibrium : relaxing local equilibrium assumptions in multiphase flow in porous media / Philipp Nuske. Betreuer: Rainer Helmig." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2015. http://d-nb.info/1066239568/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
16

Nuske, Klaus Philipp [Verfasser], and Rainer [Akademischer Betreuer] Helmig. "Beyond local equilibrium : relaxing local equilibrium assumptions in multiphase flow in porous media / Philipp Nuske. Betreuer: Rainer Helmig." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-97964.

Full text
APA, Harvard, Vancouver, ISO, and other styles
17

Wolff, Markus [Verfasser], and Rainer [Akademischer Betreuer] Helmig. "Multi-scale modeling of two-phase flow in porous media including capillary pressure effects / Markus Wolff. Betreuer: Rainer Helmig." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2013. http://d-nb.info/1044294337/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
18

Flemisch, Bernd [Verfasser], and Rainer [Akademischer Betreuer] Helmig. "Tackling coupled problems in porous media : development of numerical models and an open source simulator / Bernd Flemisch. Betreuer: Rainer Helmig." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2013. http://d-nb.info/1043482601/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
19

Jambhekar, Vishal Arun [Verfasser], and Rainer [Akademischer Betreuer] Helmig. "Numerical modeling and analysis of evaporative salinization in a coupled free-flow porous-media system / Vishal Arun Jambhekar ; Betreuer: Rainer Helmig." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2016. http://d-nb.info/112357250X/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
20

Niessner, Jennifer [Verfasser], and Rainer [Akademischer Betreuer] Helmig. "The role of interfacial areas in two-phase flow in porous media : bridging scales and coupling models / Jennifer Niessner. Betreuer: Rainer Helmig." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2011. http://d-nb.info/1013073932/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
21

Chappuzeau, Bernhard. "Transgression und Trauma bei Pedro Almodóvar und Rainer Werner Fassbinder : Gender, Memoria, Visum /." Tübingen : Stauffenburg, 2005. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=013306255&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

Full text
APA, Harvard, Vancouver, ISO, and other styles
22

Wood, George. "The Life and Times of Butehamun : Tomb Raider for the High Priest of Amun." Thesis, Uppsala universitet, Institutionen för arkeologi och antik historia, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-418993.

Full text
Abstract:
This is a biography of the scribe Butehamun. A member of a well-known family who had long lived in the village of Deir el-Medina working on the tombs in the Valley of Kings, Butehamun’s coming of age saw invasion and civil war in Thebes, and the end to the making of new tombs in the Valley, as the New Kingdom came to an end. Instead he was given the task by the High Priests of Amun to remove and rewrap royal mummies and rebury them in secret caches, while plundering them of their gold and other valuables for the coffers of the priestly rulers of Thebes. In many respects Butehamun was a tomb raider in the service of the High Priests of Amun. That project seems to have been successful: The mummy of every single king from the 18th through 21st Dynasties that has been identified and was found in a tomb was found in the two caches KV 35 or TT 320 (with the sole exception of Tutankhamun). Butehamun is unusually well-documented, leaving behind many letters, labels on coffins he worked with, graffiti, and highly unusual imagery on his own coffins. Two houses he lived in have been excavated, one with inscriptions about his family. This paper seeks to create a biography of Butehamun through the study of these things he left behind. One seems to reflect he may have suffered a crisis of faith, others may display instead a deep piety for Amun and pride in the royal mummy reburial project he carried out in the service of the god.
Detta är en biografi över skrivaren Butehamon. Han kom från en mycket känd familj som i många generationer verkat i byn Deir e-Medinah och arbetat med gravarna i Konungarnas dal. Han växte upp under en tid av invasion och inbördeskrig i Thebe, vilket ledde till slutet på det Nya riket och på byggandet av nya gravar i Dalen. Butehamons uppdrag från guden Amuns överstepräster blev istället att svepa om mumierna med nytt linne och avlägsna allt guld och andra värdesaker. Mumierna begravdes i nya hemliga förvaringsplatser, medan värdesakerna gick till Thebes religiösa härskare. Man kan beskriva Butehamon som en gravplundrare i tjänst hos översteprästerna. Projektet tycks ha varit en succé: Varenda kung från 18:e till och med 21:a dynastierna vars mumie har identifierats och som hittades i en grav fanns i ett av de två gömställena, KV 35 eller TT 320 (med Tutankhamon som enda undantag). Butehamon är ovanligt väldokumenterad, med många brev, etiketter på likkistor han arbetat med, graffiti samt de mycket ovanliga bilderna på hans egna likkistor. Två hus där han bodde har grävts ut, ett med inskriptioner om hans familj. Denna avhandling är en biografi över Butehamon baserad på studier av de saker han lämnade efter sig. En av dem tyder på en andlig kris, medan andra tycks avspegla en djup fromhet och tro på Amun och stolthet över det mumieprojekt han ledde i gudens tjänst.
APA, Harvard, Vancouver, ISO, and other styles
23

Baber, Katherina [Verfasser], and Rainer [Akademischer Betreuer] Helmig. "Coupling free flow and flow in porous media in biological and technical applications : from a simple to a complex interface description / Katherina Baber. Betreuer: Rainer Helmig." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2015. http://d-nb.info/1065670397/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
24

Lavie, Guillaume. "Simulation et analyse numérique de procédés de récupération de pétrole caractérisés par des fronts raides." Thesis, Pau, 2011. http://www.theses.fr/2011PAUU3028/document.

Full text
Abstract:
Du fait de la raréfaction des gisements de pétrole conventionnel et de l'accroissement de la demande mondiale, les compagnies pétrolières sont amenées à considérer de nouvelles réserves inexploitées car trop coûteuses à l'exploitation il y a quelques années. Ce travail est consacré à la simulation numérique d'un procédé d'extraction de pétrole lourd, le VAPEX, caractérisé par l'injection de solvant facilitant le drainage par gravité de l'huile. L'enjeu principal de cette thèse est de simuler numériquement et avec précision, le mécanisme de pénétration du solvant dans l'huile, cette zone de pénétration étant relativement mince à l'échelle du réservoir. Notre travail a porté sur l'utilisation d’algorithmes de raffinement adaptatif de maillages pour la simulation de ce procédé. Ces considérations nous ont amené à considérer la problématique d'application d'algorithmes de raffinement de maillages en milieu poreux, et plus particulièrement en milieux poreux hétérogènes pour lesquels les indicateurs (ou estimateurs) existants permettant de déterminer les zones à raffiner ne sont pas clairement établis. Dans un premier temps, nous mettons en place l'ensemble des équations que nous sommes amené à résoudre numériquement au cours de l'élaboration des codes de simulation de procédés d'extraction par injection d'eau et de solvant. Nous décrivons ensuite le procédé VAPEX, et nous établissons l'étude semi-analytique de Butler & Mokrys du procédé à laquelle nous ajoutons la prise en compte des termes capillaires. Nous décrivons ensuite deux méthodes mathématiques permettant d'établir des estimateurs a posteriori pour de tels problèmes. Au cours de ce travail, nous mettons en place deux codes de simulation de réservoirs, le premier est un simulateur basé sur une discrétisation des équations par une méthode de discrétisation par éléments finis mixtes hybrides et permettant de simuler des problèmes d'injection d'eau et le second est basé sur une méthode de discrétisation par volumes finis permettant de simuler des procédés d'injection de solvant tels que le VAPEX. Nous utilisons ensuite ces estimateurs par le biais d’un algorithme de raffinement de maillages pour ces deux codes de simulation. L'étude du modèle semi-analytique que nous avons faite du procédé VAPEX montre que sous certaines hypothèses le terme capillaire peut être assimilé à un terme diffusif pour prédire l'avancement du front. Les estimateurs mis en place basés sur les variations des flux permettent de déterminer les zones de front pour des réservoirs hétérogènes. Nous illustrons ce résultat sur une simulation d'un problème d'injection d'eau à l'aide du simulateur mis en place. Les estimateurs mis en place permettent également de capter les fronts des saturations des phases et de concentration des constituants. Nous illustrons ce résultat sur une simulation du procédé VAPEX.Ce travail a amené à la mise en place d’estimateurs permettant de raffiner des maillages autour des fronts de saturation et de concentration pour des milieux poreux hétérogènes au cours de la simulation d'écoulements en milieux poreux. Pour caractériser ces estimateurs, nous avons distingué un front de saturation (resp. concentration), qui correspond est une forte variation de saturation (resp. concentration) engendrant une forte variation du flux, d'un fort gradient de saturation (resp. concentration) qui apparait automatiquement lorsque la perméabilité du milieu poreux varie brutalement. Les extensions de ce travail pourraient permettre de mettre en œuvre plus de simulations faisant varier les termes capillaires et les termes dispersifs affin de mieux apprécier le comportement des estimateurs introduits. Il serait également intéressant d'étudier l'impact des hypothèses faites pour établir les estimateurs empiriques utilisés. Enfin, de tels estimateurs pourraient s'appliquer à des codes de simulation tenant compte de la dispersion en milieu poreux
With rarefaction of conventional petroleum fields and the world supply increase, petroleum companies have to consider new unexploited reserves because of their exploitation cost few years ago. These reserves are called unconventional reserves, mainly heavy oil or extra heavy oil. This work is devoted to the numerical simulation of an extraction process of heavy oil, the VAPEX. VAPEX is characterized by solvent injection in a horizontal well in order to facilitate gravity drainage of oil in a producer well situated in the same way under the injector well. The main stake to simulate this process is to simulate the mechanism of solvent penetration in oil with precision, this penetration zone being very thin drawn to the reservoir scale. We focus our work on application of algorithm of adaptive mesh refinement to simulate this process. This consideration lead us to consider the issue of application of mesh refinement in porous media, especially in heterogeneous porous media for which existing indicators (or estimators) do not allow to determine properly the zone to be refined. The objective of this work is to determine a posteriori estimators for implementation of simulation codes of heterogeneous petroleum reservoirs and their application to the VAPEX process. Firstly, we set the whole equations we have to solve numerically to build simulators of petroleum extraction processes by water injection and solvent injection. Then, we describe the VAPEX process and we establish the semi-analytical study of Butler & Mokrys of this process for which we take in account influence of capillarity. Afterwards, we describe two mathematical methods to establish a posteriori estimators for such problems. One of these methods is based on empirical extrapolation of existing estimators for hyperbolic problems given by Ohlberger. In the course of this work, we set two simulation codes of petroleum reservoirs, the first is a simulator based on equations discretisation by mixed finite element method allowing simulation of water injection problems and the second is based on discretisation by finite volumes method allowing simulation of solvent injection processes like the VAPEX. Then, we apply these estimators to an algorithm of mesh refinement for these two simulation codes. The study of the semi-analytical model set of the VAPEX process show that under hypothesis, capillarity can be likened to a diffusive term to determine the front tracking. Estimators set are based on flux variation and allow determining sharp zone to be refined in heterogeneous porous media. We illustrate this result for a simulation of water injection with the simulator built. The estimators set can also track saturations fronts and concentrations fronts. We illustrate this result on a simulation of the VAPEX process. This work shows it is possible to set estimators allowing mesh refinement to track saturations and concentrations fronts during simulation of flow in heterogeneous porous media. To set such estimators, we make a distinction between saturation (resp. concentration) front and high saturation (resp. concentration) gradient. To our point of view, a front is a high variation of saturation or concentration that has a high impact on the flux variation. It is different from a high gradient that appear automatically where the permeability of the porous media has a high variation. This work could be complemented by making more simulations with variations of capillarity and dispersive terms in order to have a better appreciation of estimators introduced. It would be advisable to study the impact of suppositions done to establish these empirical estimators set. After all, such estimators could be applied to a simulation code taking in account dispersion in porous media
APA, Harvard, Vancouver, ISO, and other styles
25

Sterner, Amanda. "”Moderator – Vad är gemenskap? Informant – Raid 25manna” – En explorativ studie om World of Warcraft." Thesis, Stockholms universitet, Institutionen för journalistik, medier och kommunikation (JMK), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-57951.

Full text
Abstract:
SYFTE: Syftet med denna uppsats är att undersöka vad det kan finnas för orsaker till att spela ett av världens störta MMORPG-spel, World of Warcraft. Förutom detta är uppsatsens mål att även granska vad det kan finnas för positiva och negativa effekter med spelandet samt utifrån Henry Jenkins kunskapsgemenskap se om de kan appliceras på spelets guilder. TEORETISKT PERSPEKTIV: Det teoretiska perspektivet, vilket har används i denna uppsats, är Henry Jenkins moderna form av kunskapsgemenskap. En kunskapsgemenskap är en gemenskap där man med hjälp av varandras individuella expertis tillsammans kan nå gemensamma mål. Det skrivs även om elitistiska kunskapsgemenskaper, vilka är en utveckling av kunskapsgemenskaper. Skillnaden mellan de två typerna ligger i att de elitistiska grundar sig i tidigare meriter istället för engagemang.   METOD: Metoderna, vilka har använts, är fokusgruppintervjuer som insamlingsmetod och innehållsanalys som analysmetod. Fokusgrupper blev vald som metod då vi kan få information som är svår att tillhandahålla utan att prata med människor som har kunskap om fenomenet. Fokusgruppintervjuer är en tämligen ny metod, vilket gör att sätt att analysera materialet på kan variera, i denna uppsats blev materialet analyserat genom en innehållsanalys. En grundtanke med innehållsanalyser är att koda materialet, dela upp det i enheter samt söka efter trender och mönster. Emellanåt har forumtrådar vilka behandlar WoW använts för att kunna styrka eller stjälpa det informanter sagt. SLUTSATS: Det jag har kommit fram till är att orsaker till att spela WoW grundar enkelt sig i hur man spelar, likaså gör effekterna av spelet. Av mina informanter blev slutsatsen att kunskapsgemenskaper spelar till stor del av gemenskapen och följaktligen lider relationerna utanför spelet av detta, positiva effekter av spelandet kan enkelt vara att man får gemenskap. Elitistiska kunskapsgemenskaper spelar för att vara bäst och känna att man presterar, negativa aspekter blir då att för mycket tid vill läggas på spelet och annat prioriteras bort. Positivt av detta blir att spelandet kan ses som en legitim merit på ett CV. Huruvida guilder kan ses som kunskapsgemenskaper eller ej är det ingen fråga om men om de kan ses som elitistiska eller inte har jag goda skäl att tro att det grundar sig i guildens syfte, är syftet att umgås eller att vara bäst?
APA, Harvard, Vancouver, ISO, and other styles
26

Pfarr, Simone [Verfasser], and Rainer [Akademischer Betreuer] Spanagel. "The Role of the Medial Prefrontal Cortex in Reward Seeking: Functional Evidence on Cellular and Molecular Mechanisms underlying Drug and Natural Reward Seeking / Simone Pfarr ; Betreuer: Rainer Spanagel." Heidelberg : Universitätsbibliothek Heidelberg, 2018. http://d-nb.info/1177043874/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
27

Lindner, Franz Ferdinand [Verfasser], Michael [Akademischer Betreuer] [Gutachter] Pfitzner, Christian [Gutachter] Mundt, and Rainer [Gutachter] Helmig. "Untersuchungen zur mehrphasigen Strömung und Verdampfung in porösen Medien / Franz Ferdinand Lindner ; Gutachter: Michael Pfitzner, Christian Mundt, Rainer Helmig ; Akademischer Betreuer: Michael Pfitzner ; Universität der Bundeswehr München, Fakultät für Luft- und Raumfahrttechnik." Neubiberg : Universitätsbibliothek der Universität der Bundeswehr München, 2016. http://d-nb.info/1125971975/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
28

Lindner, Franz Ferdinand Verfasser], Michael [Akademischer Betreuer] [Pfitzner, Christian [Gutachter] Mundt, and Rainer [Gutachter] Helmig. "Untersuchungen zur mehrphasigen Strömung und Verdampfung in porösen Medien / Franz Ferdinand Lindner ; Gutachter: Michael Pfitzner, Christian Mundt, Rainer Helmig ; Akademischer Betreuer: Michael Pfitzner ; Universität der Bundeswehr München, Fakultät für Luft- und Raumfahrttechnik." Neubiberg : Universitätsbibliothek der Universität der Bundeswehr München, 2016. http://d-nb.info/1125971975/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
29

Cazeaux, Guillaume. "L’Internet et la formation de l’opinion." Thesis, Paris 5, 2012. http://www.theses.fr/2012PA05H021.

Full text
Abstract:
La thèse porte sur les effets de l’Internet sur la démocratie et la pratique de la citoyenneté, dans le contexte d’une civilisation marquée par une certaine apathie, où la télévision occupe une place centrale. Il s’agit d’interroger la pertinence des théories déterministes qui accordent aux nouvelles technologies de l’information et de la communication un pouvoir important de transformation de l’humain, soit dans le sens de son émancipation, soit dans celui de son aliénation. L’objectif de la recherche est de produire l’évaluation la plus réaliste possible de l’impact de l’Internet sur notre autonomie individuelle et collective. La thèse présente trois grands moments : dans le premier, les notions d’opinion publique, de démocratie et le rôle des médias traditionnels sont examinés à travers leurs fonctions latentes et manifestes, et révèlent une tension constante de l’humain entre son aspiration à la liberté et la nécessité du conformisme. Dans le deuxième moment, sont mis en évidence les différents effets possibles du web sur les citoyens, selon leurs pratiques ; nous voyons clairement se dessiner une coupure entre une minorité active, sur laquelle le web a des effets majeurs dans son rapport à l’information et à sa citoyenneté, et une majorité plus passive. Dans le troisième moment, nous décrivons l’activité d’un média citoyen, sorte d’utopie numérique pour les citoyens actifs. Cette thèse de philosophie emprunte aussi à d’autres disciplines comme l’histoire et la sociologie, et analyse précisément et concrètement certains phénomènes observés en ligne
The thesis focuses on the effects of the Internet on democracy and the practice of citizenship in the context of a civilization marked by apathy, where television plays a central role. It is to question the relevance of deterministic theories that accord to new technologies of information and communication a significant power to transform the human is in the direction of emancipation, or in that of his alienation. The objective of the research is to produce the most realistic assessment of the impact of the Internet on our individual and collective autonomy.The thesis has three main stages: in the first, the concepts of public opinion, democracy and the role of traditional media are examined through their overt and latent functions, and reveal a constant tension between the human aspiration to the freedom and the need to conform. In the second time, are highlighted various possible effects of the web on citizens. According to their practices, we can clearly see emerge a partition between an active minority, on which the web has a major impact in his relation to the information and citizenship, and a more passive majority. In the third stage, we describe the activity of a citizen media, digital kind of utopia for active citizens.This thesis of philosophy also borrows from other disciplines such as history and sociology, and analyzes some specific and concrete phenomena online
APA, Harvard, Vancouver, ISO, and other styles
30

Thomas, Quincy D. "Lycra, Legs, and Legitimacy: Performances of Feminine Power in Twentieth Century American Popular Culture." Bowling Green State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1521852471021414.

Full text
APA, Harvard, Vancouver, ISO, and other styles
31

Andersson, Erika, and Amanda Norman. "Förtroende och tillit i World of Warcraft : En studie utifrån WoW-användares perspektiv." Thesis, Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-32023.

Full text
Abstract:
Studien behandlar vilka interaktioner en användare behöver tillämpa för att den ska kunna finna eller skapa ett förtroende inom en guild i spelet World of Warcraft. Det övergripande syftet är att se om dessa interaktioner tillämpas på olika sätt beroende på vilken guild en användare är medlem i. Studien har främst utgått ifrån tre guilder och ett antal WoW-användares egna perspektiv, erfarenheter och tankar där undersökningarna har byggts på kvalitativa metoder. De kvalitativa metoderna inkluderade enkäter, scenario, observation och semi- strukturerade intervjuer. Analysen har till stor del utgått ifrån teorierna socialt kapital teorin och flow-teorin. Studien har även granskat hur WoW’s design och funktioner kan påverka en användares interaktioner både i och utanför spelet.
This study will show different interactions that a user needs to adjust in order to find and create trust within a guild in the game World of Warcraft. The aim of this study is to see if these interactions are used in different ways depending on which guild a user is a member in. The study is based on three different guilds and a few WoW-users perspectives, experiences and thoughts. The main methods in this study is based on qualitative methods that includes surveys, scenarios, observation and semi-structured interviews. The analysis has been based on two theories, social capital theory and the flow theory. This study has also examined how the design and features of WoW can affect a user's interactions, both in and outside the game.
APA, Harvard, Vancouver, ISO, and other styles
32

Paulíček, Martin. "Ladění výkonnosti databází." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2011. http://www.nusl.cz/ntk/nusl-237021.

Full text
Abstract:
The objective of this thesis was to study problems of an insufficient database processing performance and possibilities how to improve the performance with database configuration file optimizations, more powerful hardware and parallel processing. The master thesis contains a description of relational databases, storage media and different forms of parallelism with its use in database systems. There is a description of the developed software for testing database performance. The program was used for testing several database configuration files, various hardware, different database systems (PostgreSQL, Oracle) and advantages of parallel method "partitioning". Test reports and evaluation results are described at the end of the thesis.
APA, Harvard, Vancouver, ISO, and other styles
33

張智鈞. "Vibration Analysis of Raised Floor for Lube Machine on Media Plants." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/77595206889215963681.

Full text
Abstract:
碩士
中華大學
機械與航太工程研究所
95
At present, the industry of science and technology is booming in Taiwan and the high-tech plants are rapidly built one by one. The micro-vibration problems of plant are gradually noticed by the field of industry and academic. The purpose of this thesis is to study the micro-vibration at the media disk platform on the raised floor of the SHDT ( SHOWA DENKO HD TRACE ) 2nd plant induced by the foundation through AGV. The finite element model of the media disk plant is created by the use of SAP2000 computer code on the raised floor. For order to reduce the huge degree-of-freedom ( D. O. F. ) contained in the complicated raised floor system, an equivalent plate system is created to replace the raised floor system. Ritz vector modal method is employed to perform the time history analysis. The obtained velocity at each node is then transform to decibel ( dB ) value by micro-vibration analysis. The results show that the y-direction ground acceleration caused the largest vibration value. Structure damping value would reduce the Lube plat-form. Changing material property of young’ modulus slightly reduces the dB value.
APA, Harvard, Vancouver, ISO, and other styles
34

Chang, Rick, and 張智鈞. "Vibration Analysis of Raised Floor for Lube Machine on Media Plants." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/83609340008924323127.

Full text
Abstract:
碩士
中華大學
機械與航太工程研究所
94
At present, the industry of science and technology is booming in Taiwan and the high-tech plants are rapidly built one by one. The micro-vibration problems of plant are gradually noticed by the field of industry and academic. The purpose of this thesis is to study the micro-vibration at the media disk platform on the raised floor of the SHDT ( SHOWA DENKO HD TRACE ) 2nd plant induced by the foundation through AGV. The finite element model of the media disk plant is created by the use of SAP2000 computer code on the raised floor. For order to reduce the huge degree-of-freedom ( D. O. F. ) contained in the complicated raised floor system, an equivalent plate system is created to replace the raised floor system. Ritz vector modal method is employed to perform the time history analysis. The obtained velocity at each node is then transform to decibel ( dB ) value by micro-vibration analysis. The results show that the y-direction ground acceleration caused the largest vibration value. Structure damping value would reduce the Lube plat-form. Changing material property of young’ modulus slightly reduces the dB value.
APA, Harvard, Vancouver, ISO, and other styles
35

Alarifi, Saif. "Safety Effectiveness of Conversion of Two-Way-Left-Turn Lanes into Raised Medians." Master's thesis, 2014. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6046.

Full text
Abstract:
Two way left turn lanes (TWLTL) and raised medians are common median treatments on roadways. This research focused on evaluating the safety effectiveness of conversion of TWLTLs into raised medians using Before-After and Cross Sectional Studies. In the Before-After Studies, we evaluated the effect of this treatment using the Naive, Before-After with Comparison Group (CG), and Before-After with Empirical Bayes (EB) Methods. In order to apply these methods, a total of 33 segments of a treated group and 109 segments of a comparison group have been collected. Also, safety performance functions (SPFs) have been developed using the negative binomial model in order to calibrate crash modification factors (CMF) using the Before-After with Empirical Bayes Method. This research also evaluated the safety effectiveness of this treatment on four and six lane roads using Before-After with CG and Before-After with EB. The type of raised medians was further evaluated using Before-After with CG and EB. In sum, the results from this study show that applying the before-After and Cross Sectional studies have proved that the conversion from a TWLTL to a raised median helped to reduce total, fatal and injury, head on, angle, and left turn crashes. It significantly reduces crashes for head-on and left turn crashes, by restricting turning maneuvers. Also, this study has proved that the treatment is more effective on four rather than six lane roads. Furthermore, two types of raised medians, concrete and lawn curb, were evaluated after the conversion from TWLTLs. It was found that both medians have similar effects due to the conversion, and both median types helped in reducing the number of crashes.
M.S.
Masters
Civil, Environmental and Construction Engineering
Engineering and Computer Science
Civil Engineering; Transportation System Engineering Track
APA, Harvard, Vancouver, ISO, and other styles
36

Nehm, Rainer [Verfasser]. "Rauschanalysen am induktiven, kapazitiven und mikrowelleninduzierten Plasma in Kombination mit unterschiedlichen pneumatischen Zerstäubern bei emissionsspektrometrischen Bestimmungen in wäßrigen und organischen Medien / von Rainer Nehm." 1999. http://d-nb.info/962866881/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography