Dissertations / Theses on the topic 'Basic elements'
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Doronina, Sophia. "Basic elements of visual design." Thesis, Київський національний університет технологій та дизайну, 2019. https://er.knutd.edu.ua/handle/123456789/13064.
Full textPizarro, Damion Luis. "Basic elements of Target Safety Programs." [Gainesville, Fla.] : University of Florida, 2006. http://purl.fcla.edu/fcla/etd/UFE0014358.
Full textMartinez, Parrondo Yago. "Smart Meters : Basic Elements in the Development of Smart Grids." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-13630.
Full textHolaus, Walter. "Ultra fast switches - basic elements for future medium voltage switchgear /." Zürich, 2001. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=14375.
Full textPumaneratkul, Chayadit. "Basic characteristics of Rankine cycle with functional elements, using supercritical carbon dioxide." Thesis, https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB13097320/?lang=0, 2018. https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB13097320/?lang=0.
Full textOkwor, Festus Amechi. "Motivation for learning as the key to success of foreign students in Ukraine." Thesis, НТУ "ХПІ", 2014. http://repository.kpi.kharkov.ua/handle/KhPI-Press/8440.
Full textKotsopoulos, Sotirios D. 1966. "Point, line, plane : basic elements of formal composition in Bauhaus and shape computation theories." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/67743.
Full textIncludes bibliographical references (p. 59-61).
Architecture is not representational. It does not stand for something else. However, the process of its formation is inclusively dependent upon a series of dynamic graphic calculations that result into a series of spatial descriptions. This process can be equated to a non-linear sequence of computations with points, lines, planes, and solids, on the plane and in physical space. This study examines the functional and perceptual properties of points, lines and planes. How do basic elements behave in formal composition, and how do computations of form affect basic elements? The context of the study is composite. Shape computation theory that involves algebras of basic elements and shape rules provides a flexible and expressive computational apparatus, while the systematic approach of the Bauhaus on nonrepresentational composition, and the theories of P. Klee and V. Kandinsky in particular, provide artistic insight at a perceptual and interpretational level.
by Sotirios D. Kotsopoulos.
S.M.
Schön, Joan. "Elements of dream interpretation: laying the foundation of a basic model for clinical practice." Thesis, Rhodes University, 2001. http://hdl.handle.net/10962/d1002559.
Full textPirani, Ayaaz M. "Classically bonded chalcogenide anions of tin, thallium, and lead in basic media /." *McMaster only, 1997.
Find full textHausmann, Leo. "Parish finance councils an analysis of the canons and selected guidelines in search of basic elements for a diocesan policy /." Theological Research Exchange Network (TREN), 2005. http://www.tren.com/search.cfm?p029-0647.
Full textVan, der Hoven Wikus. "Invictus : Orchestral Prelude in 3 movements by Noel Stockton : analytical discussion of the synthesis of the basic elements of music in a third stream composition." Diss., University of Pretoria, 2008. http://hdl.handle.net/2263/23621.
Full textDissertation (MMus)--University of Pretoria, 2010.
Music
unrestricted
Рева, К. О., and С. А. Степенко. "Дослідження роботи базових елементів пам'яті на основі ПЛІС." Thesis, Сумський державний університет, 2016. http://essuir.sumdu.edu.ua/handle/123456789/46238.
Full textWinell, Sigge. "Psykologiska operationer i en nationell kontext : En undersökning om det fulla utnyttjandet av Försvarsmaktens resurser." Thesis, Försvarshögskolan, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-4036.
Full textThis is an essay that will analyze one of the Swedish armed forces newest capabilities, Psychological operations (Psyops). Thoughts and capabilities that concern psychological operations have always existed in military organizations but the concept of Psyops is the latest choice of words for it. The purpose of the essay is investigate how the Swedish Psyops unit can be used in a regular war, within the own borders. The method and techniques that is used in the essay is a qualitative description method and a argument analysis. At first the theoretical framework that is used will be explained. In the same chapter the meaning of the concept Psyops will be explained. The next chapter contents an analyzeof the material presented in the chapter before. Here the author will use the theoretical framework as a tool for analyze that will lead to the conclusions and answers to the questions of the essay. Finally in the result chapter the conclusions will be presented. The conclusion that is made is that there are suitable applications in a regular conflict, for the Swedish Psyops unit. More specific areas of application for the unit is informational service, counter psyops and CIMIC.
Weise, Michael. "Simplified calculation of rHCT basis functions for an arbitrary splitting." Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-160152.
Full textWeise, Michael. "A note on the second derivatives of rHCT basis functions." Universitätsbibliothek Chemnitz, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-154344.
Full textWeise, Michael. "A note on the second derivatives of rHCT basis functions - extended." Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-160168.
Full textComeau, Christian R. "Critical Erosion/Corrosion Piping Wall Thicknesses Under Static and Fatigue Stress Conditions According to ASME Guidelines." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/34057.
Full textMaster of Science
Drapeau, Clémentine. "Mesure et modélisation de la mobilité et de la spéciation des éléments majeurs et traces métalliques au sein de matrices complexes polluées en fonction du pH : application aux sédiments urbains et déchets miniers." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSET007/document.
Full textUrban sediments and mine tailings constitute two potential sources of pollution for the environment, especially surface water or groundwater. The chemical alteration of these solid matrices by contact with a source of acidity or alkalinity via air or water is likely to result in the dissolution of the mineral and organic phases and to induce the mobilization of majors and trace elements. These mechanisms are still poorly described and modeled for this type of very complex matrices. This thesis investigates potential for the mobilization of major and trace metals elements of various contaminated complex matrices, including an urban infiltration basin sediment and two carbonated and non-carbonated mining waste (for the study of contaminated acid mining drainage and contaminated neutral drainage). Besides, pure minerals were used to simulate phase mixture at the laboratory and identify the crossed mechanisms involved in contaminated acid and neutral mine drainage. All these matrices were subjected to acid-base neutralization capacity tests (solids put into contact with a source of protons or alkalinity), with monitoring of the pH (buffer capacity), the conductivity and the elemental release (major and trace metal elements). Experimental data were modeled with the PHREEQC geochemical speciation software. The combination of experimental and modeling approaches, which had very rarely been developed on such complex solid matrices, allowed the identification of (i) the dissolution reactions of the constitutive phases of the polluted matrices with the sorption reactions involved in the mobilization of their major and trace metal elements, (ii) the speciation of the major and trace metal elements in these matrices and in solution in equilibrium with the solid phases. This thesis, therefore, leads to a robust, precise and replicable methodology allowing a fine characterization of liquid and solid phase speciation of metallic pollutants in contaminated matrices. This methodology constitutes a crucial basis for understanding and predicting the evolution of contaminated solids (urban sediments and mining waste) according to different management methods: decontamination, recovery, and recycling
Benneyworth, Laura Mahoney. "Distribution of Trace Elements in Cumberland River Basin Reservoir Sediments." TopSCHOLAR®, 2011. http://digitalcommons.wku.edu/theses/1113.
Full textKlichowicz, Michael. "Modeling of realistic microstructures on the basis of quantitative mineralogical analyses." OpenD, 2020. https://tubaf.qucosa.de/id/qucosa%3A72835.
Full textThis research aims to make it possible to use realistic mineral microstructures in simulations of mineral processing. In particular, comminution processes, such as the crushing and grinding of raw mineral materials, are highly aff ected by the mineral microstructure, since the texture and structure of the many grains and their micromechanical properties determine the macroscopic fracture behavior. To illustrate this, consider a mineral material that essentially consists of grains of two diff erent mineral phases, such as quartz and feldspar. If the micromechanical properties of these two phases are diff erent, this will likely have an impact on the macroscopic fracture behavior. Assuming that the grains of one of the minerals break at lower loads, it is likely that a crack through a stone of that material will spread through the weaker grains. In fact, this is an important property for ore processing. In order to extract valuable minerals from an ore, it is important to liberate them from the commercially worthless material in which they are found. For this, it is essential to know and understand how the material breaks at grain-size level. To be able to simulate this breakage, it is important to use realistic models of the mineral microstructures. This study demonstrates how such realistic two-dimensional microstructures can be generated on the computer based on quantitative microstructural analysis. Furthermore, the study shows how these synthetic microstructures can then be incorporated into the well-established discrete element method, where the breakage of mineral material can be simulated at grain-size level.:List of Acronyms VII List of Latin Symbols IX List of Greek Symbols XV 1 Introduction 1 1.1 Motivation for using realistic microstructures in Discrete Element Method (DEM) 1 1.2 Possibilities for using realistic mineral microstructures in DEM simulations . 4 1.3 Objective and disposition of the thesis . . . . . . . . . . . . . . . . . . . . 7 2 Background 9 2.1 Discrete Element Method (DEM) . . . . . . . . . . . . . . . . . . . . . . . . 9 2.1.1 Fundamentals of the Discrete Element Method (DEM) . . . . . . . . 9 2.1.2 Applications of DEM in comminution science . . . . . . . . . . . . . 21 2.1.3 Limitations of DEM in comminution science . . . . . . . . . . . . . . 26 2.2 Quantitative Microstructural Analysis . . . . . . . . . . . . . . . . . . . . . 29 2.2.1 Fundamentals of the Quantitative Microstructural Analysis . . . . . . 29 2.2.2 Applied QMA in mineral processing . . . . . . . . . . . . . . . . . . 49 2.2.3 Applicability of the QMA for the synthesis of realistic microstructures 49 3 Synthesis of realistic mineral microstructures for DEM simulations 51 3.1 Development of a computer-assisted QMA for the analysis of real and synthetic mineral microstructures . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 3.1.1 Fundamentals of the computer-assisted QMA . . . . . . . . . . . . 53 3.1.2 The requirements for the false-color image. . . . . . . . . . . . . . 54 3.1.3 The conversion of a given real mineral microstructure into a false-color image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 3.1.4 Implementation of the point, line, and area analysis . . . . . . . . . 59 3.1.5 Selection of appropriate QMA parameters for analyzing two-dimensional microstructures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 3.1.6 Summary of the principles of the adapted Quantitative Microstructural Analysis (QMA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 3.2 Analysis of possible strategies for the microstructure synthesis . . . . . . . . 71 3.3 Implementation of the drawing method . . . . . . . . . . . . . . . . . . . . 76 3.3.1 Drawing of a single grain . . . . . . . . . . . . . . . . . . . . . . . 77 XVIII List of Greek Symbols 3.3.2 Drawing of multiple grains, which form a synthetic microstructure . . 81 3.3.3 Synthesizing mineral microstructures consisting of multiple phases . 85 3.4 The final program for microstructure analysis and synthesis . . . . . . . . . 89 3.4.1 Synthesis and analysis of an example microstructure . . . . . . . . . 90 3.4.2 Procedure for generating a realistic synthetic microstructure of a given real microstructure . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 4 Validation of the synthesis approach 103 4.1 Methodical considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 4.1.1 The basic idea of the validation procedure . . . . . . . . . . . . . . 103 4.1.2 The experimental realizations . . . . . . . . . . . . . . . . . . . . . 108 4.2 Basic indenter test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 4.2.1 Considerations for the basic indenter test . . . . . . . . . . . . . . . 109 4.2.2 Realization and evaluation of the real basic indenter test . . . . . . . 114 4.2.3 Realization and evaluation of the simulated basic indenter test . . . 127 4.2.4 Conclusions on the basic indenter test . . . . . . . . . . . . . . . . . 138 4.3 Extended indenter test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139 4.3.1 Basic considerations for the extended indenter test . . . . . . . . . . 139 4.3.2 Realization and evaluation of the real extended indenter test . . . . 142 4.3.3 Realization and evaluation of the simulated extended indenter test . 154 4.3.4 Conclusions on the extended indenter test . . . . . . . . . . . . . . 171 4.4 Particle bed test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172 4.4.1 Basic considerations for the particle bed test . . . . . . . . . . . . . 173 4.4.2 Realization and evaluation of the real particle bed test . . . . . . . . 176 4.4.3 Realization and evaluation of the simulated particle bed test . . . . . 188 4.4.4 Conclusions on the particle bed test . . . . . . . . . . . . . . . . . . 203 5 Conclusions and directions for future development 205 6 References 211 List of Figures 229 List of Tables 235 Appendix 237
Li, Jie. "Impression of DC: Research for Basic Element of Architecture in Three Dimension." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/103031.
Full textMaster of Architecture
It is easy to build a building. But for building a city, it is much harder. For building a city, this is a long process. And in this process, many important moments would happen. The city, Washington, D.C., was also built after many important moments. As one of most important capitals in the world, this city has suffered many disasters and survived in the process of history. There are many museums in this city to record the history of this country, but there is not a good museum to record the history of this city. So, I decided to design a building for this great city. This building would also become a good place to help people understand this city. This building would become a new landmark for this city. I decided to design this building in a special site, the Hains Point. This site is close to the Potomac River and Ronald Reagan Washington National Airport. So, it would be easy for that people visit this building. I also want this building become the first impression of DC for people. This is also my thesis title. I used my architecture knowledge and many people's help to design this cube building, "Impressions of DC".
Cruz, Guilherme Ferreira da. "Os reflexos condicionantes da parte geral da Lei 8.078/90 na formatação do direito material positivo das relações de consumo." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/2/2131/tde-03092012-142717/.
Full textThe investigation of constraining reflexes of the General Part of Act 8.078/90 in formatting the positive substantive law of consumption relationship is directly related to the legal systematic employed in the CDC confection, especially regarding the first ten articles and the option to enroll in them the main structuring foundations of the whole protective system. Indeed, the positive substantive law of consumption relationship cannot be dissociated of the General Part of Act 8.078/90, true interpretation rule aimed at setting the range and depth of this legal framework, established by constitutional determination to support this specific subject, the consumer, beyond that, inclined to search the real balance in the obligational relations focused on the consumption market. The main purpose is to visualize the Codes General Part as a constraining factor of substantive private law rules created in order to materialize the Congress originary will to protect the consumer, working as a distributive justice in a historically unbalanced legal relation, demoting the remaining special part rules to a purely explanatory function. Moreover, the positive dogmatic, the Code applicability limits, the Consumption Relationships National Policy, the objective good-faith as a minimum ethical demandable, the consumers basic rights and the risk as an element of civil liability were examined. At the end, a purpose analytical summary is presented, identifying direct conclusions concerning the theoretical and practical problems examined. It becomes imperative to comprehend the real dimension of the substantive rights granted to consumers and therefore, the only path is to deeply investigate the constraining reflexes of the General Part of Act 8.078/90 in structuring the best consideration in legal terms to promote consumer protection.
Piechatzek, Timo. "Charakterisierung von Rührwerkskugelmühlen auf Basis der Diskrete-Elemente-Methode (DEM)." Göttingen Sierke, 2009. http://d-nb.info/997949015/04.
Full textDavidsson, Joel. "Orbital-free Density-Functional Theory in a Finite Element Basis." Thesis, Linköpings universitet, Teoretisk Fysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-121778.
Full textMartins, Pablo Simões. "Petrografia e estratigrafia química de rochas carbonáticas do terciário da Bacia de Campos: Membro Siri." Universidade do Estado do Rio de Janeiro, 2008. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=898.
Full textFive wells have crossed carbonates of the Siri Member in the south of Campos Basin. They have been used objectifying the accomplishment of a petrographic/microfacies and chemostratigraphic study in these calcareous rocks. This work allowed to identify seven microfacies, constituted basically of coralline algae, larger foraminifera and barnacles, which enclose a set of depositional systems since a shallow lagoon of open circulation until a forereef/reef margin below wave base, passing for organics build up that form a complex of algalic banks in the edge of the platform. The rocks previously deposited have been modified by diagenesis, mainly, in a marine phreatic diagenetic environment. Cementation has been the main process responsible for lost of porosity in these carbonates. On anothe r hand, solution has improved the reservoir porosity. A chemostratigraphic study using major e trace chemical elements made possible the recognition of three chemical units and eight subunits in Siri Member. By correlating dO18 and dC13 isotopic events, identified in well E, with global events, a Late Oligocene Early Miocene age is suggested for Siri limestone. The stratigraphic sequences have showed that system tracts can be relationed with specific fossi liferous assemblages and with chemical variations observed in geochemical profiles.
Yamada, Takashi. "Basic properties of Dual Reciprocity Boundary Element Method and applications to magnetic field analysis." Thesis, University of Portsmouth, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240420.
Full textKlitzing, Kyle. "Rare Earth Elements and Yttrium in Acid Mine Drainages of the Illinois Basin." OpenSIUC, 2020. https://opensiuc.lib.siu.edu/theses/2808.
Full textChong-Diaz, Damaris, and Thomas III Maddock. "STREAM-AQUIFER INTERACTION MODELING IN LOWER CIENEGA CREEK BASIN, ARIZONA USING FINITE ELEMENTS." Department of Hydrology and Water Resources, University of Arizona (Tucson, AZ), 1995. http://hdl.handle.net/10150/614192.
Full textOnyegbule, Nkele. "Composite low temperate hydrogen storage material on the basis of iron-titanium alloy." Thesis, University of the Western Cape, 2006. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_6344_1242888003.
Full textIt is widely believed that hydrogen will, within a few years, become the means of storing and transporting energy. The reason is the depletion of hydrocarbons and the relatively facile production of hydrogen from various renewable sources of energy. Hydrogen can be combusted in an efficient way in a fuel cell with water as emission product. The overall goal of the project was to deevlop the knowledge base for solid-state hydrogen storage technology suitable for stationary and mobile applications. The aim of this research was to develop a novel composite hydrogen storage material with high wt% storage capacity, high intrinsic safety, appropriate thermodynamics, high mechanical strength, reversibility of the system and fast kinetics based on a well known "
low temperature"
intermetallic alloy (Ti/Fe) as the core.
Meyer, Arnd, and Rolf Springer. "Basics of Linear Thermoelasticity." Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-160178.
Full textMeyer, Uwe F. "Untersuchung struktureller Elemente des südöstlichen Weddellmeeres : Antarktis auf der Basis mariner Potentialfelddaten = Analysis of structural elements of the south-eastern Weddell Sea : Antarctica based on marine potential field data /." Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung, 1999. http://www.gbv.de/dms/bs/toc/30481279x.pdf.
Full textGu, Huanhuan. "Computed basis functions for finite element analysis based on tomographic data." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=107699.
Full textCette thése propose une nouvelle technique pour trouver les champs électromagnétiques lorsque le domaine de calcul est défini par un dense quadrillage de pixels (2D) ou voxels (3D). Un scénario qui arrive souvent dans le domaine de bioelectromagnetic, puisque les géométries des tissus sont généralement obtenues par tomographie.La technique proposée dans cette thése est une méthode des éléments finis dans laquelle, chaque élément 3D est un ensemble de p × p × p voxels (p est un nombre entier). Par conséquent, cette technique évite la difficile tâche de l'extraction de surface et de maillage. Comme un élément peut être composé de différents matériaux, les fonctions de base classiques ne sont plus pertinentes. Ainsi, les fonctions de base sont calculées en utilisant les grilles de voxels, afin de respecter des discontinuités internes. L'idée est d'abord testée sur des problèmes comprenant des carrés imbriqués (2D) et des cubes (3D) de diélectrique, avec une paire de charge placée à l'intérieur. Les résultats obtenus en utilisant différentes tailles d'élément (p) sont en bon accord avec ceux obtenus par un logiciel commercial: pour p = 4, la différence quadratique moyenne (RMS) est 1,5% du potentiel maximum. Ensuite, la nouvelle méthode est appliquée pour résoudre un problème électroencéphalographie (EEG), dans lequel la tête est modélisée par un volume conducteur et l'activité neuronale par des dipôles. Le modèle de tête se compose de 180×217×181 voxels. Le potentiel électrique calculée est échantillonné sur un contour sur le côté extérieur du cuir chevelu, pour différentes tailles d'élément, p. Ces résultats sont toujours en bon accord avec une solution de référence: pour p = 4, la quadratique moyenne (RMS) est d'environ 1% du potentiel maximum. Résoudre un problème des éléments finis avec p = 4 est 4,7 fois plus rapide que le cas que chaque voxel est considéré comme un seul élément, c'est à dire, p = 1. Lorsque le résoudre pour plusieurs côtés droits est recherché, qui est vrais dans plupart des cas, l'accélération est plus grande. Par exemple, avec 24 côtés droits, la solution pour p = 4 est 40 fois plus rapide que le cas de p = 1.
Young, Christopher. "Shape sensitivity analysis using a fixed basis function finite element approach." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ62901.pdf.
Full textMontez, Ana Catarina Marques. "Exposição e acumulação de elementos potencialmente tóxicos em manjericão (Ocimum basilicum)." Master's thesis, ISA, 2014. http://hdl.handle.net/10400.5/6785.
Full textIn this project the effects of the exposure of basil (Ocimum basilicum) to potentially toxic elements (PTE) were studied as well as the effects of salinity, through the analysis of different parameters such as biomass, dry matter and chlorophyll contents and mineral composition. Basil with 20 days growth was exposed to solutions containing Cd, Cu, As and NaCl. The exposure to As and NaCl led to a significant decrease in the quantity of biomass and it evidenced a high sensibility to salinity. Only the leaves contaminated with Cd showed a considerable decreased in the dry matter content, when compared to the control samples. Additionally, the plants exposed to Cd showed visible changes in the leaves pigmentation (chlorosis), which were verified by the Hansatech equipment. It was observed an accumulation of PTEs in the edible part of the plants, which showed higher contamination levels than the ones established by law for horticulture products after 52 days, especially for Cd and As. The concentration of the essential metal Cu only exceeded the limits established by law after 73 days of exposure and this was only observed in samples contaminated by Cu
Wollmann, Philipp. "Synthese und Funktion nanoskaliger Oxide auf Basis der Elemente Bismut und Niob." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-85784.
Full textGeis, Winfried. "FEM mit web-Spline-Basis analytische und numerische Behandlung geeigneter Gewichtsfunktionen /." [S.l. : s.n.], 2001. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB9716178.
Full textWitherow, Rebecca A. "Minor Alkaline Earth Element and Alkali Metal Behavior in Closed-Basin Lakes." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1250628213.
Full textDabbs, Jennifer Marie, and Jennifer Marie Dabbs. "Trace Element Composition of Apatite from Intrusive Rocks in Northeastern Nevada, USA." Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/620842.
Full textFrey, Felice Louisa [Verfasser], and Heinrich [Akademischer Betreuer] Leonhardt. "Molecular basis for targeting PRC1 to polycomb response elements / Felice Louisa Frey ; Betreuer: Heinrich Leonhardt." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2015. http://d-nb.info/1115654799/34.
Full textHou, Wei. "Methodical basis for landscape structure analysis and monitoring: inclusion of ecotones and small landscape elements." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-155258.
Full textDie Lebensraumvielfalt ist neben der genetischen Vielfalt und der Artenvielfalt eine wesentliche Ebene der Biodiversität. Da diese Ebenen miteinander verknüpft sind, können Methoden zur Messung der Muster von Lebensräumen auf Landschaftsebene erfolgreich angewandt werden, um den Zustand der Biodiversität zu bewerten. Das zur räumlichen Musteranalyse auf Landschaftsebene häufig verwendete Patch-Korridor-Matrix-Modell weist allerdings einige Defizite auf. Dieses Modell geht von diskreten Strukturen in der Landschaft aus, ohne explizite Berücksichtigung von „Übergangszonen“ oder „Gradienten“ zwischen den einzelnen Landschaftselementen („Patches“). Diese Übergangszonen, welche auch als „Ökotone“ bezeichnet werden, sind dynamisch und haben einen starken Einfluss auf benachbarte Ökosysteme. Außerdem wird die Landschaft in diesem Modell als ebene Fläche ohne Berücksichtigung der dritten räumlichen Dimension (Höhe) betrachtet. Das führt dazu, dass die Flächengrößen und Umfänge der Patches sowie Distanzen zwischen den Patches besonders in reliefreichen Regionen unterschätzt werden. Daher muss das Patch-Korridor-Matrix-Modell für eine realistische und präzise Darstellung der Lebensraummuster für die Bewertung der biologischen Vielfalt angepasst werden. Ein weiterer Teil der Informationen, die häufig in Untersuchungen ignoriert werden, sind „Kleinbiotope“ innerhalb größerer Patches (z. B. Feldhecken, Baumreihen, Feldgehölze oder Einzelbäume). Dadurch wird die Heterogenität innerhalb von Patches unterschätzt. Die vorliegende Arbeit basiert auf der Integration der dritten räumlichen Dimension in die Landbedeckungsklassifikation und die Landschaftsstrukturanalyse. Mit Methoden der räumlichen Datenverarbeitung wurde ein integrierter Ansatz von objektbasierter Bildanalyse (OBIA) und pixelbasierter Bildanalyse (PBIA) entwickelt und auf einen Datensatz aus verschiedenen Quellen (RapidEye-Satellitenbilder und Lidar-Daten) angewendet. Dazu wird zunächst ein OBIA-Verfahren für die Ableitung von Hauptlandbedeckungsklassen entsprechend spektraler Objekteigenschaften basierend auf RapidEye-Bilddaten angewandt. Anschließend wurde basierend auf den klassifizierten Karten, ein pixelbasierter Algorithmus für die Erkennung von kleinen Biotopen und Ökotonen mit Hilfe eines normalisierten digitalen Oberflächenmodells (NDSM), welches das aus LIDAR-Daten abgeleitet wurde, entwickelt. Zur Beschreibung der dreidimensionalen Charakteristika der Lebensraummuster unter der räumlichen Betrachtung der ökologischen Funktionen von kleinen Biotopen und Ökotonen, werden mehrere 3D-Maße (z. B. Maße zur landschaftlichen Vielfalt, zur Fragmentierung bzw. Konnektivität und zum Kontrast) vorgeschlagen. Die vorgeschlagene Methodik wird an zwei realen Beispielen in Deutschland und China angewandt. Die Ergebnisse zeigen zweierlei. Erstens zeigt es sich, dass der integrierte Ansatz der objektbasierten und pixelbasierten Bildverarbeitung effektiv für die Landbedeckungsklassifikation auf unterschiedlichen räumlichen Skalen ist. Die Klassifikationsgüte insgesamt für die Hauptlandbedeckungstypen beträgt 92 % im deutschen und 87 % im chinesischen Testgebiet. Der eigens entwickelte Red Edge-Vegetationsindex (REVI), der sich aus RapidEye-Bilddaten berechnen lässt, erwies sich für die Vegetationsklassifizierung als effizienter verglichen mit dem traditionell verwendeten Normalized Differenced Vegetation Index (NDVI), insbesondere für die Gewinnung der Waldmaske. Im Rahmen der Verwendung von NDSM-Daten erwies sich die dritte Dimension als hilfreich für die Identifizierung von kleinen Biotopen und dem Höhengradienten, beispielsweise an der Wald/Feld-Grenze. Für den Nachweis von Baumreihen und Ökotonen an der Wald/Feld-Grenze wurde der sogenannte pixelbasierte Algorithmus „Pufferung und Schrumpfung“ entwickelt. Im Ergebnis konnten kleine Biotope mit einer Genauigkeit von 80 % und vier verschiedene Ökotontypen im Testgebiet detektiert werden. Zweitens zeigen die Ergebnisse der Anwendung der 3D-Maße in den zwei unterschiedlichen Testgebieten, dass die häufig genutzten Landschaftsstrukturmaße Shannon-Diversität (SHDI) und Simpson-Diversität (SIDI) nicht ausreichend für die Beschreibung der Lebensraumvielfalt sind. Sie quantifizieren lediglich die Zusammensetzung der Lebensräume, ohne Berücksichtigung der räumlichen Verteilung und Anordnung. Eine modifizierte 3D-Version der Effektiven Maschenweite (MESH), welche die Ökotone integriert, führt zu einer realistischen Quantifizierung der Fragmentierung von Lebensräumen. Darüber hinaus wurden zwei höhenbasierte Kontrastindizes, der flächengewichtete Kantenkontrast (AWEC) und der Gesamt-Kantenkontrast Index (TECI), als Ergänzung der Fragmentierungsmaße entwickelt. Sowohl Ökotone als auch Kleinbiotope wurden in den Berechnungen der Kontrastmaße integriert, um deren Randeffekte im Lebensraummuster zu berücksichtigen. Damit kann als ein weiterer Schritt nach der Fragmentierungsanalyse die Randdurchlässigkeit zusätzlich in die Landschaftsstrukturanalyse einbezogen werden. Außerdem wird ein vektorbasierter Algorithmus namens „Multi-Puffer“-Ansatz für die Analyse von ökologischen Netzwerken auf Basis von Landbedeckungskarten vorgeschlagen. Er berücksichtigt Kleinbiotope als Trittsteine, um Verbindungen zwischen Patches herzustellen. Weiterhin werden entsprechende Maße, z. B. die Effective Connected Mesh Size (ECMS), für die Analyse der ökologischen Netzwerke vorgeschlagen. Diese zeigen die Auswirkungen unterschiedlicher angenommener Ausbreitungsdistanzen von Organismen bei der Ableitung von Biotopverbundnetzen in einfacher Weise. Diese Verbindungen zwischen Lebensräumen über Trittsteine hinweg dienen als ökologische Indikatoren für den „gesunden Zustand“ des Systems und zeigen die gegenseitigen Verbindungen zwischen den Lebensräumen. Zusammenfassend kann gesagt werden, dass die Vielfalt der Lebensräume eine wesentliche Ebene der Biodiversität ist. Die Methoden zur Quantifizierung der Lebensraummuster müssen verbessert und angepasst werden, um den Anforderungen an ein Landschaftsmonitoring und die Erhaltung der biologischen Vielfalt gerecht zu werden. Die in dieser Arbeit vorgestellten Ansätze dienen als mögliche methodische Lösung für eine feinteilige Landschaftsstrukturanalyse und fungieren als ein „Trittsteine” auf dem Weg zu weiteren methodischen Entwicklungen für einen tieferen Einblick in die Muster von Lebensräumen
Harbrecht, Helmut, and Reinhold Schneider. "Biorthogonal wavelet bases for the boundary element method." Universitätsbibliothek Chemnitz, 2006. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200601308.
Full textHirama, Marcus Vinicius. "Estimativas da variação de produtividade superficial na porção central da Bacia de Santos desde o último período glacial com base na associação de cocolitoforídeos." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/21/21136/tde-17012019-154253/.
Full textIn this work, a quantitative analysis of cocolithophores species was carried out from a piston core collected in the Santos Basin in order to estimate primary paleoproductivity variation at the sea surface and to relate it with the fluctuation of major elements (Ti, Fe, Ca, Al and K) in the interval for the last 35 thousand years and the present. The paleoproductivity was related to major elements in periods of low sea level with high and low rainfall and did not present a relation since the last marine transgression. It was also sought to identify associations of cocolithophores for the marine isotopes stages 1, 2 and 3. Two most abundant species associations were observed: one during the Glacial and another one in the Interglacial. Finally, we sought to relate the cocolithophores species with the climatic events of Younger Dryas and Heinrich 1, 2 and 3, however, the species showed no pattern of variation in their abundance during these events.
Kappler, Olaf. "Landschaftsmaße." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2015. http://dx.doi.org/10.18452/17228.
Full textFor a long time, but especially during the last decades parts of the geosphere were compared and valued using their geometrical properties. Therefore many different landscape measures were found empirically which map these geometrical qualities into several levels in a variety of ways. In this paper there will be presented a theory which deals with the basic level i.e. with these measures which evaluate individual relative homogeneous landscape elements. Based on the objective of this paper a system of redundance-free basic measures will be deduced theoretically. This system will be studied in regard to its mathematical properties and will be illustrated by using standardized abstract objects and real example data. Landscape elements can be classified using statistical procedures or complex landscape measures with practically requested properties can be constructed by using these basic measures. The relations between well-known landscape measures and these basic measures are shown. The procedure of deduction of new application-specific complex landscape measures from the basic measures are introduced in this paper.
Deva, Faton. "A Future Wine Cluster in Kosova?" Thesis, Blekinge Tekniska Högskola, Sektionen för teknokultur, humaniora och samhällsbyggnad, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5724.
Full textFaton Deva "Shkodra" 14, Prishtina 10000 Kosova mob: +377(0)44122883 e-mail:faton99d@gmail.com
Park, Gi-Ho. "p-Refinement Techniques for Vector Finite Elements in Electromagnetics." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/10602.
Full textYao, Ming-Sheng. "Linear and geometrically nonlinear structural dynamic analysis using reduced basis finite element technique." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/46620.
Full textCruz, átila Lupim. "Modelagem direta de integrais de domínio usando funções de base radial no contexto do método dos elementos de contorno." Universidade Federal do Espírito Santo, 2012. http://repositorio.ufes.br/handle/10/6260.
Full textA pesquisa envolvida na presente dissertação se baseou no uso de funções de base radial para gerar uma nova formulação integral, que interpola diretamente o termo não homogêneo da equação diferencial de governo, no contexto do Método dos Elementos de Contorno (MEC). Emprega-se o uso de funções primitivas das funções de interpolação originais no núcleo da integral de domínio, permitindo a transformação desta última numa integral de contorno, evitando assim a discretização do domínio por meio de células, semelhante ao realizado na Dupla Reciprocidade. Para melhor avaliação das potencialidades da formulação, os testes numéricos apresentados abordaram apenas a solução de problemas governados pela Equação de Poisson. Os problemas escolhidos dentro desta categoria possuem solução analítica, o que permitiu aferir com mais rigor a precisão dos resultados. Para melhor balizamento da eficiência da formulação proposta, todos os problemas abordados também foram resolvidos pela formulação com Dupla Reciprocidade. O custo computacional dispendido para cada uma dessas formulações também foi comparado. Para ambas as formulações também foram testados esquemas de ajuste da interpolação realizada, visando avaliar seus efeitos na precisão dos resultados e também propositando obter economia computacional em futuras aplicações em simulações na área de propagações de ondas
This research was based on the use of radial basis functions to generate a new integral formulation that interpolates directly the domain action, related to the inhomogeneous term of the governing differential equation, using the Boundary Element Method (BEM). The use of primitive functions of the original interpolation functions in the kernel of the inhomogeneous integral is proposed, allowing its transformation into a boundary integral, thus avoiding the domain discretization through cells, similar to that conducted in the Dual Reciprocity. To better evaluation of the capability of the proposed formulation, the numerical tests presented only solved problems governed by the Poisson Equation. Test problems chosen have known analytical solution, which allowed a better evaluation of the numerical accuracy. To better check the efficiency of the proposed formulation, all the problems were also solved by the Dual Reciprocity Boundary Element Formulation. The computational cost expended for each of these formulations was also compared. Fitting interpolation schemes for both formulations were also tested in order to evaluate their effects on the accuracy of the results and also looking for economy in future computational applications related to wave propagation problems
Hörmann, Alexander. "Ermittlung optimierter Stabwerkmodelle auf Basis des Kraftflusses als Anwendung plattformunabhängiger Prozesskopplung." Aachen Shaker, 2006. http://d-nb.info/988106256/04.
Full textRamirez-Caro, Daniel. "Rare earth elements (REE) as geochemical clues to reconstruct hydrocarbon generation history." Thesis, Kansas State University, 2013. http://hdl.handle.net/2097/16871.
Full textDepartment of Geology
Matthew Totten
The REE distribution patterns and total concentrations of the organic matter of the Woodford shale reveal a potential avenue to investigate hydrocarbon maturation processes in a source rock. Ten samples of the organic matter fraction and 10 samples of the silicate-carbonate fraction of the Woodford shale from north central Oklahoma were analyzed by methods developed at KSU. Thirteen oil samples from Woodford Devonian oil and Mississippian oil samples were analyzed for REE also. REE concentration levels in an average shale range from 170 ppm to 185 ppm, and concentration levels in modern day plants occur in the ppb levels. The REE concentrations in the organic matter of the Woodford Shale samples analyzed ranged from 300 to 800 ppm. The high concentrations of the REEs in the Woodford Shale, as compared to the modern-day plants, are reflections of the transformations of buried Woodford Shale organic materials in post-depositional environmental conditions with potential contributions of exchanges of REE coming from associated sediments. The distribution patterns of REEs in the organic materials normalized to PAAS (post-Archean Australian Shale) had the following significant features: (1) all but two out of the ten samples had a La-Lu trend with HREE enrichment in general, (2) all but two samples showed Ho and Tm positive enrichments, (3) only one sample had positive Eu anomalies, (4) three samples had Ce negative anomalies, although one was with a positive Ce anomaly, (5) all but three out of ten had MREE enrichment by varied degrees. It is hypothesized that Ho and Tm positive anomalies in the organic materials of the Woodford Shale are reflections of enzymic influence related to the plant physiology. Similar arguments may be made for the Eu and the Ce anomalies in the Woodford Shale organic materials. The varied MREE enrichments are likely to have been related to some phosphate mineralization events, as the Woodford Shale is well known for having abundant presence of phosphate nodules. The trend of HREE enrichment in general for the Woodford Shale organic materials can be related to inheritance from sources with REE-complexes stabilized by interaction between the metals and carbonate ligands or carboxylate ligands or both. Therefore, a reasonable suggestion about the history of the REEs in the organic materials would be that both source and burial transformation effects of the deposited organic materials in association with the inorganic constituents had an influence on the general trend and the specific trends in the distribution patterns of the REEs. This study provides a valuable insight into the understandings of the REE landscapes in the organic fraction of the Woodford Shale in northern Oklahoma, linking these understandings to the REE analysis of an oil generated from the same source bed and comparing it to oil produced from younger Mississippian oil. The information gathered from this study may ultimately prove useful to trace the chemical history of oils generated from the Woodford Shale source beds.
Pereira, Danillo Roberto 1984. "Representação e calculo eficiente da iluminação global na sintese de imagem." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/276156.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Computação
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Resumo: A geração de imagens fotorrealisticas e um desafio importante em computação gráfica. Um ingrediente critico para a obtenção do realismo esta o modelo de iluminação. Em 1986, Jim Kajiya apresentou uma equação integral que define o fluxo de luz (radiosidade) num ambiente de maneira precisa; contudo, ate recentemente, os métodos conhecidos para a resolução dessa equação tinham custo computacional e complexidade de implementação elevados. Em 2008, Jaako Lehtinen desenvolveu uma técnica relativamente simples e eficiente para o calculo da iluminação global em cenas virtuais, usando elementos finitos definidos por pontos de amostragem. Neste projeto de Mestrado, implementamos esse método, e comparamos o resultado usando três tipos diferentes de bases: uma base radial, uma base radial normalizada e uma base de Shepard. Alem da comparação visual, calculamos a radiosidade "exata" para uma cena simples e comparamos quantitativamente esse resultado com os resultados do método de Lehtinen com cada uma das três bases.
Abstract: The generation of realistic images is a major challenge in computer graphics. A critical ingredient for realistic rendering is the lighting model. In 1986, Jim Kajiya presented an integral equation that precisely defines the light flow (radiosity) in a virtual environment; however, until recently, the known methods for solving that equation had high computational cost and implementation complexity. In 2008, Jaako Lehtinen developed a relatively simple and efficient technique for the computation of global illumination in virtual scenes, using finite elements defined by sampling points. In this Masters project, we implemented that method, and compared the results using three different types of bases: a radial basis, a normalized radial basis, and a Shepard basis. Besides visual comparison, we computed the "exact" radiosity for a simple scene and compared quantitatively that result with the results obtained by Lehtinen's method with each of the three bases.
Mestrado
Computação Grafica
Mestre em Ciência da Computação