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Thematische Bibliographien / Mapping of elemental distribution / Dissertationen

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Dissertationen zum Thema „Mapping of elemental distribution“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 29. Juli 2025

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1

MUCOLLARI, Irena. "K-edge filter subtraction technique used for mapping elemental distribution on paintings." Doctoral thesis, Università degli studi di Ferrara, 2014. http://hdl.handle.net/11392/2388940.

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Abstract Several techniques exist for mapping the element pigments on painting using the synchrotron light or quasi monochromatic sources. K-edge subtraction technique is a well known technique and based on discontinuity in the attenuation coefficient due to photoelectric K-edge of the absorbing materials. A couple of filters with slightly different K -edge energies, if are with balanced thicknesses, can isolate spectra in a narrow energy band. Quasi monoenergetic X-rays with a spectral width Ek that is the difference in K-edge energies will be taken by subtracting images or spectral data. T

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Alapää, Pär. "Soil geochemical mapping of manganese in Norrbotten : Delineation of the spatial and statistical distribution of manganese and correlated elements in glacial tills." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-111075.

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Information from soil geochemical mapping programmes is useful within a number of different fields including for example mineral exploration and environmental research. The purpose of this thesis was to investigate the relationship between soil metal concentrations and geological factors such as bedrock lithology, structural geology, mineralizations etc. The study used data acquired in association with a nationwide soil geochemical mapping programme conducted by the Geological Survey of Sweden, SGU. These data contained both total element concentrations measured via X-ray fluorescence spectros

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Šindelářová, Anna. "Analýza zubů a kostí metodou spektroskopie laserem buzeného plazmatu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-445149.

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The presented diploma thesis deals with the elemental composition of hard tissues – human and murine jaws studied by laser-induced plasma spectroscopy (LIBS). Samples of human teeth contained a disease called ankylosis and the difference in elemental composition of healthy and diseased tissue was observed to localize ankylosis in the tooth. When evaluating the map of the spatial distribution of phosphorus and calcium, a decrease in the concentration of these elements in the ankylosis infected area was observed. Furthermore, murine jaws containing lead were analyzed. When assessing the spatial

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Nabeel, Muhammad. "Diffusion of Elemental Additives during Sintering." Thesis, KTH, Materialvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-100702.

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The mechanical properties of components made by PM steels are normally inferior to those made by alternative processes. One of the main reasons is that a large amount of pores are present in sintered components. The other main reason is that the alloying elements, particularly Ni, are not uniformly distributed after conventional sintering procedures. This work is aimed at a better understanding of the influence of alloying additions on mechanical properties and homogeneity of the microstructure. The experimental work has been carried out in two trials. Trial 1 was performed to investigate mec

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Khaleque, Nazrul. "Quantitative elemental and molecular mapping of undemineralised tissue using x-ray microscopy." Thesis, King's College London (University of London), 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243822.

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6

Ahari, Homayoun. "Assembly, phase transitions, order and elemental distribution in microporous tin(IV) chalcogenides." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ35095.pdf.

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7

Moore, Josephine. "Strain-Driven Elemental Re-Distribution during Hydration of the Mid-Lower Crust." Thesis, Curtin University, 2020. http://hdl.handle.net/20.500.11937/79105.

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Fluids are vital for the transport of mass and energy through the Earth’s crust and also for its thermodynamic re-equilibration in response to changes in pressure and temperature. Presented here are observations for the coupling between deformation and reaction, mass transport, and variations in trace-element composition and isotope ratios. Overall, this thesis communicates the importance of mid- to lower crustal deformation for mass transfer and in the attainment of equilibria in the presence of fluid.

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Anderson, Evan Pelzner. "Chuaria, Vendotaenia, and the taphonomy of the Carbonaceous Compression." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/72988.

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Carbonaceous Compressions are a widespread preservational style for fossils, yet their taphonomy remains poorly understood. Previous studies focusing on the taphonomy of carbonaceous compressions have primarily looked at exceptionally preserved faunas in plane view. The precious nature of these fossils leaves destructive techniques of analysis out of the question, but these techniques are necessary if the taphonomy of carbonaceous compressions is to be deciphered. This study analyzes Neoproterozoic carbonaceous compressions from the Yangtze Gorges area in order to address this issue. Chuar

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Feldman, Steven B. "Pedogenesis, weathering processes, and elemental distribution along a soil climosequence in the southern Piedmont." Diss., This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-06062008-155645/.

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10

Destun, Krystofer J. "Mapping stream fish distribution and abundance from riparian vegetation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ35882.pdf.

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11

Gerych, Walter. "Versatile Anomaly Detection with Outlier Preserving Distribution Mapping Autoencoders." Digital WPI, 2019. https://digitalcommons.wpi.edu/etd-theses/1345.

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State-of-the-art deep learning methods for outlier detection make the assumption that outliers will appear far away from inlier data in the latent space produced by distribution mapping deep networks. However, this assumption fails in practice,because the divergence penalty adopted for this purpose encourages mapping outliers into the same high-probability regions as inliers. To overcome this shortcoming,we introduce a novel deep learning outlier detection method, called Outlier Preserving Distribution Mapping Autoencoder (OP-DMA), which succeeds to map outliers to low probability regions in t

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Chowdhury, Raziya Sultana. "Size distribution and source apportionment of airborne particulate matter." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/226864/1/Raziya%20Sultana_Chowdhury_Thesis.pdf.

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The study investigated the viability of employing a receptor modelling technique to characterize the sources of atmospheric aerosols from different air quality datasets. Chemical speciated datasets from two Brisbane sites; particle size distribution and organic mass spectral data from Garden Island, Western Australia have been analysed. The investigation produced quantitative information about the nature of the dominant primary and secondary emission sources of atmospheric aerosols at the study sites. Such information can aid air quality management.

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Fodrie, Fredrick Joel. "Quantifying nursery habitat value for the California halibut, Paralichthys californicus distribution, elemental fingerprinting and demographic approaches /." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2006. http://wwwlib.umi.com/cr/ucsd/fullcit?p3240046.

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Thesis (Ph. D.)--University of California, San Diego, 2006.<br>Title from first page of PDF file (viewed January 12, 2007). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references.

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Kelly, Dermot James. "Connexin distribution and optical mapping of the mammalian av node." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=78393.

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Atrioventricular (AV) nodal conduction and the pathways of propagation through the AV node have remained enigmatic. Histological and immunohistochemical studies have revealed distinct cellular regions within the AV node with varying distribution of specific ion channels. However, to date, there is little information concerning the pattern of localization of the gap junction proteins that mediate intercellular communication. The current immunohistochemical/confocal studies show a non-uniform distribution of three connexin isoforms (Cx 40, Cx 43 and Cx 45) within these cellular regions of

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Pigott, David Michael. "Mapping the global distribution of zoonoses of public health importance." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:962dc1a7-c6c1-4878-ab6f-94dcebf7b1e1.

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Medical cartography can provide valuable insights into the epidemiology and ecology of infectious diseases, providing a quantitative representation of the distribution of these pathogens. Such methods therefore provide a key step in informing public health policy decisions ranging from prioritising sites for further investigation to identifying targets for interventions. By increasing the resolution at which risk is defined, policymakers are provided with an increasingly informed approach for considering next steps as well as evaluating past progress. In spite of their benefits however, global

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Praechter, Todd A. "Affect of Emission Controls on the Elemental Concentration and Particle Size of Coal Ash." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1378196568.

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Risterucci, Paul. "Coupling of electron spectroscopies for high resolution elemental depth distribution profiles in complex architectures of functional materials." Thesis, Ecully, Ecole centrale de Lyon, 2015. http://www.theses.fr/2015ECDL0047/document.

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Ce travail de thèse est focalisé sur la détermination, de manière non-destructive, d'interfaces profondément enterrées dans des empilements multi-couches utilisés dans les conditions de technologie réelles au travers d'une méthode innovante basée sur la photoémission avec utilisation de rayons-x de haute énergie (HAXPES) et l'analyse du fond continu inélastique. Au cours de cette thèse, une procédure numérique a été développée pour quantifier la correspondance entre la mesure du fond continu faite par HAXPES et la simulation du fond continu représentative d'une distribution en profondeur donné

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Wall, Carrie Christy. "Shelf-scale Mapping of Fish Distribution Using Active and Passive Acoustics." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4251.

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Fish sound production has been associated with courtship and spawning behavior. Acoustic recordings of fish sounds can be used to identify distribution and behavior. Passive acoustic monitoring (PAM) can record large amounts of acoustic data in a specific area for days to years. These data can be collected in remote locations under potentially unsafe seas throughout a 24-hour period providing datasets unattainable using observer-based methods. However, the instruments must withstand the caustic ocean environment and be retrieved to obtain the recorded data. This can prove difficult due to

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Kommana, Karteek. "Implementation of a Geoserver Applicatoin For GIS Data Distribution and Manipulation." Thesis, Stockholms universitet, Institutionen för naturgeografi och kvartärgeologi (INK), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-92592.

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Accessibility and Interactivity are keywords of information today and that is equally important in science as anywhere else. When scientists share information it benefits if it is intuitive, informative and simple and does not demand expert skills in complicated formats. This master thesis has the aim to investigate open source software tools to design a web map application that can be used by any institute or NGO to distribute their data over internet. The Java platform to be implemented is the open source OpenLayers which allow users to view and potentially manipulate GIS map data through a

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Yatim, Alexandra Katharina Verfasser], Matthias [Akademischer Betreuer] Wuttig, and Joachim [Akademischer Betreuer] [Mayer. "Investigation of the elemental distribution in electronic materials for mobile devices / Alexandra Katharina Yatim ; Matthias Wuttig, Joachim Mayer." Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1130403041/34.

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Yatim, Alexandra Katharina [Verfasser], Matthias Akademischer Betreuer] Wuttig, and Joachim [Akademischer Betreuer] [Mayer. "Investigation of the elemental distribution in electronic materials for mobile devices / Alexandra Katharina Yatim ; Matthias Wuttig, Joachim Mayer." Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1130403041/34.

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22

Ytterman, Caroline. "Grundämnes-distribuering och bendensitet : En XRF-undersökning av vikingatida och medeltida lårben från fyra arkeologiska lokaler." Thesis, Uppsala universitet, Arkeologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-294164.

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This essay focuses on developing non-destructive methods to investigate the relationship between elemental distribution and bone porosity in archaeological bone. The skeletal material, which was analyzed, came from the archaeological sites of Skara (county of Västergötland), Varnhem (county of Västergötland), Sigtuna (county of Uppland) and Kopparsvik (county of Gotland). The essay is based on the results of a previous project, Osteoporosis och osteoarthritis, då och nu (Sten 2012). That project aimed at establishing whether medieval people, buried on the above mentioned archaeological sites,

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Xing, Liqun. "Marker density, marker distribution and QTL-by-environment interaction in QTL mapping." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0034/NQ64696.pdf.

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Xing, Liqun 1962. "Marker density, marker distribution and QTL-by-environment interaction in QTL mapping." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=36734.

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Two studies were conducted on gene mapping analysis. For the first study, genetic simulation experiments were conducted to address the effects of marker density, method of mapping analysis, and gaps in a marker map on the efficiency of QTL detection and the accuracy of QTL parameter estimation. The simulated genome consisted of seven chromosomes with seven or eight segregating QTL affecting the simulated quantitative trait. A set of six randomly segregating QTL outside the test region was consistently used to represent 40% of phenotypic variation. An individual QTL or a linkage block of two QT

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Potter, Marcus Jason. "Parametric analysis of a solid polymer fuel cell using current distribution mapping." Thesis, Loughborough University, 1999. https://dspace.lboro.ac.uk/2134/19470.

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During operation of the solid polymer fuel cell (SPFC). its performance is limited by the concentrations of hydrogen and oxygen at the reaction interfaces and in most SPFC designs, the hydration state of the membrane. Since in general, the concentrations of water and the gaseous species vary along the flow channel, the performance is also likely to change along the flow channel. In order to study this phenomenon, a measurement system was developed to map the current distribution across the electrode surface. The current distribution has been measured by dividing one of the current collectors i

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Scott-Hayward, Lindesay Alexandra Sarah. "Novel methods for species distribution mapping including spatial models in complex regions." Thesis, University of St Andrews, 2013. http://hdl.handle.net/10023/4514.

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Species Distribution Modelling (SDM) plays a key role in a number of biological applications: assessment of temporal trends in distribution, environmental impact assessment and spatial conservation planning. From a statistical perspective, this thesis develops two methods for increasing the accuracy and reliability of maps of density surfaces and provides a solution to the problem of how to collate multiple density maps of the same region, obtained from differing sources. From a biological perspective, these statistical methods are used to analyse two marine mammal datasets to produce accurate

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Schmidt, Thomas Justus, Methap Oezaslan, W. Liu, et al. "Homogeneity and elemental distribution in self-assembled bimetallic Pd–Pt aerogels prepared by a spontaneous one-step gelation process." Royal Society of Chemistry, 2016. https://tud.qucosa.de/id/qucosa%3A30258.

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Multi-metallic aerogels have recently emerged as a novel and promising class of unsupported electrocatalyst materials due to their high catalytic activity and improved durability for various electrochemical reactions. Aerogels can be prepared by a spontaneous one-step gelation process, where the chemical co-reduction of metal precursors and the prompt formation of nanochain-containing hydrogels, as a preliminary stage for the preparation of aerogels, take place. However, detailed knowledge about the homogeneity and chemical distribution of these three-dimensional Pd–Pt aerogels at the nano-sca

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Schmidt, Thomas Justus, Methap Oezaslan, W. Liu, et al. "Homogeneity and elemental distribution in self-assembled bimetallic Pd–Pt aerogels prepared by a spontaneous one-step gelation process." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-222784.

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Multi-metallic aerogels have recently emerged as a novel and promising class of unsupported electrocatalyst materials due to their high catalytic activity and improved durability for various electrochemical reactions. Aerogels can be prepared by a spontaneous one-step gelation process, where the chemical co-reduction of metal precursors and the prompt formation of nanochain-containing hydrogels, as a preliminary stage for the preparation of aerogels, take place. However, detailed knowledge about the homogeneity and chemical distribution of these three-dimensional Pd–Pt aerogels at the nano-sca

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Ozaslan, Mehtap, Wei Liu, Maarten Nachtegaal, et al. "Homogeneity and Elemental Distribution in Self-Assembled Bimetallic Pd-Pt Aerogels prepared by a spontaneous one-step gelation process." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-210970.

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Multi-metallic aerogels have recently emerged as a novel and promising class of unsupported electrocatalyst materials due to their high catalytic activity and improved durability for various electrochemical reactions. Aerogels can be prepared by a spontaneous one-step gelation process, where the chemical co-reduction of metal precursors and the prompt formation of the nanochain-consisting hydrogels, as a preliminary stage for the preparation of aerogels take place. However, detailed knowledge about the homogeneity and chemical distribution of these three-dimensional Pd-Pt aerogels at the nano-

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Karavai, Olga. "Mapping local corrosion parameters using SVET and SIET." Doctoral thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/22052.

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Doutoramento em Ciência e Engenharia de Materiais<br>Localized corrosion, i.e., corrosion confined to local regions, is difficult to predict and control. In general, it appears as a result of heterogeneities, either in the metal or in the corrosive environment. One of the phenomenological features of localised corrosion is the development of specific environments close to active sites. In practice, the micro-environment near the metallic surface is different from that of the bulk medium and varies with time and conditions of the system under study. Localized electrochemical techniques b

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Vogiatzakis, Ioannis Nikolaou. "Predicting the distribution of plant communities in the Lefka Ori, Crete, using GIS." Thesis, University of Reading, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366329.

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Greenwald, Roby. "Real-time measurement of the water-insoluble aerosol size distribution instrument development and implementation /." Diss., Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-07072005-105355/.

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Thesis (Ph. D.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2006.<br>Armistead Russell, Committee Member ; James Mulholland, Committee Member ; Rodney Weber, Committee Member ; Michael H. Bergin, Committee Chair ; Jean-Luc Jaffrezo, Committee Member.

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Qi, Dongmei [Verfasser]. "Isotopic and elemental distribution of copper between Cu-bearing minerals and aqueous fluids : implications of an experimental study / Dongmei Qi." Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2019. http://d-nb.info/1176105213/34.

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Jones, Jesse Jack. "Effects of Non-homogeneous Population Distribution on Smoothed Maps Produced Using Kernel Density Estimation Methods." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc699888/.

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Understanding spatial perspectives on the spread and incidence of a disease is invaluable for public health planning and intervention. Choropleth maps are commonly used to provide an abstraction of disease risk across geographic space. These maps are derived from aggregated population counts that are known to be affected by the small numbers problem. Kernel density estimation methods account for this problem by producing risk estimates that are based on aggregations of approximately equal population sizes. However, the process of aggregation often combines data from areas with non-uniform spat

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Neumann, Patrick P. [Verfasser]. "Gas Source Localization and Gas Distribution Mapping with a Micro-Drone / Patrick P. Neumann." Berlin : Freie Universität Berlin, 2013. http://d-nb.info/1036638340/34.

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Guerra, Loaiza Carlos A. "Mapping the contemporary global distribution limits of malaria using empirical data and expert opinion." Thesis, University of Oxford, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.496900.

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Machado, Adelina da Conceicao. "Mapping of the distribution of Mycobacterium bovis strains involved in bovine tuberculosis in Mozambique." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/98114.

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Thesis (PhD)--Stellenbosch University, 2015.<br>ENGLISH ABSTRACT: Bovine tuberculosis (BTB), caused by bacteria of the Mycobacterium tuberculosis complex is reported to cause economic and public health negative impact in countries where it is prevalent. The control of the disease has been a difficult task worldwide. The main object of this thesis was to use molecular tools to generate useful information to contribute to the design of appropriate BTB control measures in Mozambique. To do so we considered a deep knowledge of the BTB history in Mozambique to be essential. The search was lar

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Mesa, Christian Requena. "The ecosystem services of the Cerrado trees : modelling, distribution mapping and implications for conservation." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/170195.

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O interesse em valorizar os serviços ecossistêmicos fornecidos pela vegetação natural aumentou em um esforço para mitigar os efeitos da mudança do uso da terra. Nesta linha de pensamento, desenvolvemos um índice para valorar as comunidades de árvores - do ponto de vista antropocêntrico - da savana brasileira (Cerrado). O índice e a cartografia produzida servirão como ferramenta para a priorização da conservação, bem como para revelar como a colonização e a expansão da agricultura tem ocorrido. Para desenvolver o índice, foram produzidas novas camadas ambientais com resolução de 90m; A distribu

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Switanek, Matthew B., Peter A. Troch, Christopher L. Castro, et al. "Scaled distribution mapping: a bias correction method that preserves raw climate model projected changes." COPERNICUS GESELLSCHAFT MBH, 2017. http://hdl.handle.net/10150/624439.

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Commonly used bias correction methods such as quantile mapping (QM) assume the function of error correction values between modeled and observed distributions are stationary or time invariant. This article finds that this function of the error correction values cannot be assumed to be stationary. As a result, QM lacks justification to inflate/deflate various moments of the climate change signal. Previous adaptations of QM, most notably quantile delta mapping (QDM), have been developed that do not rely on this assumption of stationarity. Here, we outline a methodology called scaled distribution

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Deribe, Kebede. "Mapping the spatial distribution and epidemiology of podoconiosis in Ethiopia : implications for disease control." Thesis, University of Brighton, 2016. https://research.brighton.ac.uk/en/studentTheses/c3bd5446-7507-4da6-85e7-427778bf59fd.

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In the last ten years, there has been significant progress towards the prevention, control and elimination of podoconiosis as a health problem. There are however gaps in our understanding of the epidemiology and geography of podoconiosis that hinder the planning and scale-up of intervention activities. Therefore, this PhD project aimed to define the current geographical distribution and disease burden of podoconiosis in Ethiopia and investigate underlying risk factors. This thesis adopted two main approaches to understanding distribution: first, historical data were compiled and analysed; seco

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Presley, DeAnn R. "Genesis and spatial distribution of upland soils in east central Kansas." Diss., Kansas State University, 2007. http://hdl.handle.net/2097/288.

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Doctor of Philosophy<br>Department of Agronomy<br>Michel D. Ransom<br>Upland soils in east central Kansas have a complex genesis, often contain one or more paleosols, and form in multiple parent materials including loess, colluvium, residuum, and alluvium. Quaternary loess/paleosol investigations have largely ignored this region of Kansas, as the total loess thickness on uplands is <2 m thick. In this study, the objectives are to examine the morphology and genesis of the soils of interest and how these characteristics vary within soil profiles, across landscapes, and throughout the current ser

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Reeve, Kelsie Ann. "Wintertime factors affecting contaminant distribution in farrowing barns." Thesis, University of Iowa, 2012. https://ir.uiowa.edu/etd/3371.

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Respirable dust, carbon dioxide, ammonia, hydrogen sulfide, and carbon monoxide concentrations were measured using fixed-area monitoring and contaminant mapping in a 19–crate farrowing room during the winter. Direct–reading instruments were used with fixed–area stations and contaminant mapping to evaluate concentrations during five days over a period of a three–week farrowing cycle. Concentrations were evaluated to determine the effect of the pit ventilation on contaminant concentrations, a change in concentration occurred over a sample day, and to determine if three data collection methods pr

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Pears, Ben. "The nature, distribution and significance of amended and anthropogenic soils on old arable farms and the elemental analysis of black carbonised particles." Thesis, University of Stirling, 2009. http://hdl.handle.net/1893/2291.

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Ever since the development of farming humans have been implicitly linked with the landscape. Influences include the manipulation of natural environments by woodland clearance, field developments and animal husbandry. Development can also be determined by the identification and distribution of soils developed and modified by the addition of organic and inorganic components. Anthropogenic or amended soils have been identified in many forms across north west Europe that retain distinctive physical and chemical indications of historical agrarian and settlement history. This thesis researched the o

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Skjønsfjell, Eirik Torbjørn Bakken. "Mapping Orientation Distribution of Talc Particles in Polypropylene by Small-Angle X-ray Scattering Tomography." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for fysikk, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-23619.

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Small-angle X-ray scattering tomography has for the first time been used toinvestigate the spatially resolved orientation distribution of talc particles in asample of injection molded isotactic polypropylene, where the particles had apreferred orientation along the axis of the injection. The scattering patternsin the direction perpendicular to the rotation axis of the tomography scanwere used to retrieve the orientation distribution in a 2D cross section of thesample.Two different methods are presented, one using a numerical approach ofsimulated annealing and one method using a linear set of e

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Nguyen, Thi Hong Diep, Glino Gallardo Wenresti, Kumar Tripathi Nitin, and Hoang Minh Truong. "Cobia cage culture distribution mapping and carrying capacity assessment in Phu Quoc, Kien Giang province." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-126816.

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Cobia fish cage is the most popular marine culture species raised in Phu Quoc Island, Vietnam. For its sustainable development, there is a need to determine the carrying capacity to avoid nega-tive marine environmental impact in the future. This study was carried out to collect water samples each two months at the lowest and highest tides at four points around the farming area in Rach Vem, Phu Quoc Island, Kien Giang Province from February to October 2011. Water quality in cobia cage culture was surveyed to assess the environmental status of coastal aquaculture areas including seven parameters

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Reggente, Matteo. "Statistical gas distribution modelling for mobile robot applications." Doctoral thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-37896.

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In this dissertation, we present and evaluate algorithms for statistical gas distribution modelling in mobile robot applications. We derive a representation of the gas distribution in natural environments using gas measurements collected with mobile robots. The algorithms fuse different sensors readings (gas, wind and location) to create 2D or 3D maps. Throughout this thesis, the Kernel DM+V algorithm plays a central role in modelling the gas distribution. The key idea is the spatial extrapolation of the gas measurement using a Gaussian kernel. The algorithm produces four maps: the weight map

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Eisfelder, Christina. "Modelling Net Primary Productivity and Above-Ground Biomass for Mapping of Spatial Biomass Distribution in Kazakhstan." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-119964.

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Biomass is an important ecological variable for understanding the responses of vegetation to the currently observed global change. The impact of changes in vegetation biomass on the global ecosystem is also of high relevance. The vegetation in the arid and semi-arid environments of Kazakhstan is expected to be affected particularly strongly by future climate change. Therefore, it is of great interest to observe large-scale vegetation dynamics and biomass distribution in Kazakhstan. At the beginning of this dissertation, previous research activities and remote-sensing-based methods for biomass

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Holmqvist, Niclas. "HANDHELD LIDAR ODOMETRY ESTIMATION AND MAPPING SYSTEM." Thesis, Mälardalens högskola, Inbyggda system, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-41137.

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Ego-motion sensors are commonly used for pose estimation in Simultaneous Localization And Mapping (SLAM) algorithms. Inertial Measurement Units (IMUs) are popular sensors but suffer from integration drift over longer time scales. To remedy the drift they are often used in combination with additional sensors, such as a LiDAR. Pose estimation is used when scans, produced by these additional sensors, are being matched. The matching of scans can be computationally heavy as one scan can contain millions of data points. Methods exist to simplify the problem of finding the relative pose between senso

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Stedman, Jacqueline D. "Regional distribution of elemental concentrations in brain tissue of #normal' ageing and sporadic Alzheimer's disease subjects as determined by PIXE, RBS and INA analyses." Thesis, University of Surrey, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318698.

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Rice, John B. Jr. "Spatial and Temporal Landslide Distribution and Hazard Evaluation Analyzed by Photogeologic Mapping and Relative-Dating Techniques, Salt River Range, Wyoming." DigitalCommons@USU, 1987. https://digitalcommons.usu.edu/etd/6553.

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The distribution of landslide type and age was analyzed to determine the causes and timing of landsliding, and to assess landslide hazards in the study area. 1173 landslides and zones of landsliding were mapped on 1:15,840 scale air photos and designated by their style of movement and age. Slides were assigned to one of four age classes based on their degree of m orphologic modification visible on air photos. Relative dating (RD) methods previously applied to glacial deposits were used to refine and calibrate the age classification. Eleven RD para meters were measured on 21 rockslide and 19 gl

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