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Dissertations / Theses on the topic 'Resistivity'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Garipova, Yulia V. "Borehold resistivity inversion." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/53031.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1997.<br>Includes bibliographical references (leaves 110-111).<br>by Yulia V. Garipova.<br>M.S.

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2

Morelli, Roberto. "Resistivity testing of concrete." Thesis, University of Edinburgh, 1985. http://hdl.handle.net/1842/15425.

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3

Eidem, Per Anders. "Electrical Resistivity of Coke Beds." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for materialteknologi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-5027.

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4

Winterton, Stephen S. (Stephen Scott) Carleton University Dissertation Engineering Electrical. "The measurement of contact resistivity." Ottawa, 1989.

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5

Kalscheuer, Thomas. "Improvement and Assessment of Two-Dimensional Resistivity Models Derived from Radiomagnetotelluric and Direct-Current Resistivity Data." Doctoral thesis, Uppsala universitet, Geofysik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-9366.

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Two-dimensional (2-D) models of electrical resistivity are improved by jointly inverting radiomagnetotelluric (RMT) and direct-current resistivity (DCR) data or by allowing for displacement currents in the inversion of RMT data collected on highly resistive bedrock. Uniqueness and stability of the 2-D models are assessed with a model variance and resolution analysis that allows for the non-linearity of the inverse problem. Model variance and resolution are estimated with a truncated singular value decomposition (TSVD) of the sensitivity matrix. In the computation of model errors, inverse singu

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6

Gebregiorgis, Ashenafi Weldemariam. "Local Resistivity Measurement on Multicrystalline Silicon." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for fysikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19278.

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Even though in the past the photovoltaic industry was dominated by single-crystalline silicon this days multi-crystalline silicon is consider to be on of the most promising material for application in low manufacturing cost solar photovoltaic arrays, consequently it has a huge potential to dominate the single-crystalline silicon in the photovoltaic industry in the next decades. However the presence of crystal defects such as dislocation and grain boundaries in multi-crystalline solar cells hugely reducing the conversion efficiency of this material compared to single crystalline silicon solar

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7

Par, Andrew R. "DC Resistivity Inversion for Structural Information." Thesis, Colorado School of Mines, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10744014.

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<p> The DC resistivity method has been an important tool for mineral exploration for the direct detection of conductive bodies with economic value. It has also been used for the structural mapping of lithology and alteration where boundaries are zones of economic interest and the detection of edges is the primary goal of surveying. Edge preserving inversion has been explored extensively within the context of potential field methods but has seen relatively little attention for the DC resistivity method. The focus of this thesis is to develop and implement methods which employ specific advantage

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8

Jordan, David. "The Electrical Resistivity of Archaeological Remains." Thesis, University of Reading, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.519871.

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9

Adams, Christopher Hugh, and c. adams@student rmit edu au. "Capacitive Array Resistivity with an Inductive Source." RMIT University. Applied Sciences, 2009. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20090527.142304.

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The aim of this research was to develop an instrument that fills a niche in geophysical instrumentation for a tool that is fast, non-contact or minimal contact, and specifically optimised for discrete, near-surface, electrically resistive targets in resistive and conductive environments. This aim was sought to be achieved through the development of a new Capacitive Array Resistivity with Inductive Source (CARIS) system. Two CARIS systems were produced and thoroughly tested. A first prototype instrument CARIS-1, operating at 100KHz, was developed for proof of concept in the laboratory an

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10

Lawson, N. S. "The electrical resistivity of dilute cadmium alloys." Thesis, Lancaster University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355340.

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11

Loke, Meng Heng. "The inversion of two-dimensional resistivity data." Thesis, University of Birmingham, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.496050.

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12

Strange, Kathryn Louise. "The integration of ground resistivity with GPS." Thesis, University of Nottingham, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.405095.

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13

Snyder, Jeffrey Z. 1974. "Accuracy and resolution in 2D resistivity inversion." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/59096.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2001.<br>Includes bibliographical references.<br>Two-dimensional resistivity inversion employing regularization enforces a constraint of smoothness that minimizes error and avoids unrealistically complex solutions to the inverse problem. The insensitivity of surface array data to deeper targets typically presents an under-determined problem for solution by the inversion algorithm, and the smoothing function within the algorithm tends to "smear" tomographic imagery. Together, the physical

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14

Schippan, Frank. "The contactless measurement of the electrical resistivity." Thesis, Loughborough University, 1997. https://dspace.lboro.ac.uk/2134/14732.

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Physicists are interested in understanding the processes of nature. Within the field of Solid State Physics the characterisation of materials and the measurement of their properties is the first step towards identifiying new and interesting areas of scientific activities. The electrical resistivity of conductive materials is an important property which provides information about the electronic behaviour of the material. An elegant method to determine this characteristic is the measurement without using electrical contacts. Such a method avoids a whole set of experimental problems connected wit

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15

Perren, Lee John. "Investigating the Performance Of Electrical Resistivity Arrays." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/35240.

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2D inversion modeling of synthetic data is used to evaluate the performance of five electrical resistivity arrays, with the primary criteria being the reproduction of sharp model boundaries. 2D synthetic noise free data were calculated simulating a modern fixed spacing multi-electrode cable. Twelve 2D synthetic models, resembling a number of different geologic situations, were used to investigate performance of the dipole-dipole, pole-dipole, pole-pole, Wenner and Schlumberger arrays Although the synthetic, noise-free data were well matched for all inversions, many of the inversion results ex

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16

Hägerbrand, Jonathan. "Measurements of resistivity in transformer insulation liquids." Thesis, Uppsala universitet, Institutionen för elektroteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-413804.

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This thesis focuses on measuring techniques and results of resistivity in four commercially available insulating transformer oils: mineral oil, ester oil and two isoparaffin oils. Two measuring techniques, the industrially used diagnostic system for electrical insulation IDA and the Labview implemented Triangular Method, are used for resistivity measurements and the techniques are compared, a correction algorithm to the triangular method is suggested. Dielectric properties of mineral & ester and isoparaffin A&B mixtures are investigated, it is experimentally shown that the transformer

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17

Kiflu, Henok Gidey. "Improved 2D and 3D resistivity surveys using buried electrodes and optimized arrays: The multi-electrode resistivity implant technique (MERIT)." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6524.

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This thesis presents a novel resistivity method called Multi-Electrode resistivity technique (MERIT) that is used for high resolution imaging of complex geologic features at depth and near the edges of survey lines. The MERIT electrodes are especially shaped and designed to be self-driven using a robust-direct push technique. Measurements are taken using optimized arrays that are generated using a modified version of the “Compare-R” optimization algorithm. This work focused on both two-dimensional (MERIT2D) and three-dimensional (MERIT3D) applications of the buried array and show the relevance

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18

Sabo, Stephen Henry. "Evaluation of Capacitively-Coupled Electrical Resistivity for Locating Solution Cavities Overlain by Clay-rich Soils." Bowling Green State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1219092853.

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19

Akbari-Moghanjoughi, Massoud. "Temperature dependence of the electrical resistivity in quasicrystals." Thesis, University of Ottawa (Canada), 1995. http://hdl.handle.net/10393/10382.

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The applicability of the weak-localization theory to highly ordered quasicrystals raises the question of whether or not the long-range order in these alloys can be reconciled with the electronic disorder. This study did not detect any unusual structure-induced contribution to the resistivity at low temperatures other than those known for metallic glasses. The temperature dependence of the resistivity in icosahedral quasicrystals of high structural quality showed that the transport behaviour of these alloys at low temperatures can be satisfactorily explained in terms of conventional weak-locali

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20

Aaltonen, Jaana. "Ground Monitoring using Resistivity Measurements in Glaciated Terrains." Doctoral thesis, Stockholm : Tekniska högsk, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3177.

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21

Coleman, Brendan James Joseph. "Some aspects of IP/resistivity modelling and methodology /." Title page, contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09SB/09sbc6921.pdf.

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22

Muchaidze, Iana. "Imaging in karst terrain using electrical resistivity tomography." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2008. http://scholarsmine.mst.edu/thesis/pdf/Muchaidze_09007dcc80534d1b.pdf.

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Thesis (M.S.)--Missouri University of Science and Technology, 2008.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed August 26, 2008) Includes bibliographical references (p. 66-67).

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23

Fenn, Michael. "Electrical resistivity of thin metal films and multilayers." Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325924.

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24

Adetunji, Ademola Quadri. "Resistivity structure of the Precambrian Grenville Province, Canada." Tectonophysics, 2014. http://hdl.handle.net/1993/23450.

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As part of the southern Ontario POLARIS project, this thesis uses magnetotelluric methods to investigate the lithospheric architecture of the Proterozoic Grenville Province and its margin with the Archean Superior Province. The first multi-dimensional crustal and lithospheric resistivity images for this region are presented. The resistivity structure of the Phanerozoic sedimentary rocks in the lower Great Lakes region was determined using 1-D methods. The responses are strongly affected by a 20-23 S conductive layer within the sedimentary rocks, interpreted to be associated with Upper Ordovi

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25

Coles, Darrell Ardon 1971. "Optimal experimental design applied to DC resistivity problems." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/42921.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2008.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Includes bibliographical references (p. 317-323).<br>The systematic design of experiments to optimally query physical systems through manipulation of the data acquisition strategy is termed optimal experimental design (OED). This dissertation introduces the state-of-the-art in OED theory and presents a new design methodology, whic

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26

Barghout, Jeries Y. J. "Microstructural features that affect resistivity of aluminium conductors." Thesis, University of Manchester, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.630500.

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Before privatisation of the electrical generation and distribution industries in the United Kingdom, the CEGB, owner and operator of the national grid, distributed electricity from electrical power stations to areas local to those stations. After the privatisation of the electrical industry the National Grid Company was formed and is obliged to supply the consumer with the cheapest supplier of electricity, irrespective of supplier and user, and this has caused an increased demand on the national grid. Due to the difficulty of obtaining the right of way for new overhead electricity transmission

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27

Karim, Md Zahidul. "Characterizing soil erosion potential using electrical resistivity imaging." Thesis, Kansas State University, 2016. http://hdl.handle.net/2097/32899.

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Master of Science<br>Department of Civil Engineering<br>Stacey Tucker-Kulesza<br>The erosion rate, or erodibility, of soil depends on many soil characteristics including: plasticity, water content, grain size, percent clay, compaction, and shear strength. Many of these characteristics also influence soil in situ bulk electrical resistivity (ER) measurements. The objective of this study was to characterize soil erosion potential by correlating the in situ ER of soil with erodibility measured in the Kansas State University Erosion Function Apparatus (KSU-EFA). ER surveys were conducted at eleve

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28

Earl, Simeon J. "Estimation of subsurface electrical resistivity values in 3D." Thesis, University of Bristol, 1998. http://hdl.handle.net/1983/e7842879-bf35-43eb-86d6-d4624fae9c3c.

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29

Zhang, Jie. "Microstructure study of cementitious materials using resistivity measurement /." View abstract or full-text, 2008. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202008%20ZHANG.

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30

Amidu, Sikiru Adetona Dunbar John A. "Electrical resistivity imaging for characterizing dynamic hydrologic systems." Waco, Tex. : Baylor University, 2008. http://hdl.handle.net/2104/5207.

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31

Safarjameh, Kourosh 1961. "Fast-neutron-induced resistivity change in power MOSFETs." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277011.

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Fast neutron irradiation tests were performed to determine the correlation of change of drain-source resistance and neutron fluence for power MOSFETs. The Objectives of the tests were: (1) to detect and measure the degradation of critical MOSFET device parameters as a function of neutron fluence (2) to compare the experimental results and the theoretical model. In general, the drain-source resistance increased from 1 Ohm to 100 Ohm after exposure to fast neutron fluence of 3 x 1014 neut/cm2, and decreased by a factor of five after high temperature annealing.

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32

Marklund, Per. "A 2D Electrical Resistivity Survey of Palsas in Tavvavuoma, sub-arctic Sweden." Thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-219932.

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Electrical resistivity tomography (ERT) is a commonly used geophysical method to investigate permafrost in the mountain environment, but few studies have employed this method in a permafrost affected peatland. For this thesis, 5 ERT profiles were measured over 17 palsas and peat-plateaus in a palsa peatland environment in Tavvavuoma, northern Sweden, where the primary aim was to investigate the depth to the base of permafrost under the mounds. These depths are also used to estimate the excess ice fraction (EIF), which is indicative of the proportion of segregation ice in the frozen core under

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33

Watts, Paul CristoÌir Patrick. "Electrically conducting carbon nanotube polystyrene composites." Thesis, University of Sussex, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288865.

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34

Rücker, Carsten. "Advanced Electrical Resistivity Modelling and Inversion using Unstructured Discretization." Doctoral thesis, Universitätsbibliothek Leipzig, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-69066.

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In this dissertation an approach is presented for the three-dimensional electrical resistivity tomography (ERT) using unstructured discretizations. The geoelectrical forward problem is solved by the finite element method using tetrahedral meshes with linear and quadratic shape functions. Unstructured meshes are suitable for modelling domains of arbitrary geometry (e.g., complicated topography). Furthermore, the best trade-off between accuracy and numerical effort can be achieved due to the capability of problem-adapted mesh refinement. Unstructured discretizations also allow the considerati

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35

Seehafer, Norbert, and Jörg Schumacher. "Resistivity profile and instability of the plane sheet pinch." Universität Potsdam, 1998. http://opus.kobv.de/ubp/volltexte/2007/1468/.

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The stability of the quiescent ground state of an incompressible, viscous and electrically conducting fluid sheet, bounded by stress-free parallel planes and driven by an external electric field tangential to the boundaries, is studied numerically. The electrical conductivity varies as cosh–2(x1/a), where x1 is the cross-sheet coordinate and a is the half width of a current layer centered about the midplane of the sheet. For a <~ 0.4L, where L is the distance between the boundary planes, the ground state is unstable to disturbances whose wavelengths parallel to the sheet lie between lower and

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36

Kramvis, Sotiris C. "Application of electrical resistivity in groundwater exploration in Cyprus." Thesis, University of Leicester, 1987. http://hdl.handle.net/2381/35057.

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A number of geophysical methods have been used in groundwater exploration in Cyprus. Of these, electrical resistivity has found the widest application in the investigation of the mostly unconsolidated extensive aquifers of the Mesaoria Plain and the alluvial aquifers of the rivers draining the Troodos massif. Special emphasis has been given in this study on the detailed investigation by means of electrical resistivity of the aquifers of Western Mesaoria, Central Mesaoria and the three main Paphos rivers of Dhiarizos, Xeros and Ezusa where the nature of the deposits and the scarcity of exposure

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37

Andriyas, Tushar. "Particle Dynamics and Resistivity Characteristics in Bifurcated Current Sheets." DigitalCommons@USU, 2013. http://digitalcommons.usu.edu/etd/1513.

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Charged particle chaos and its collective effects in different magnetic geometries are investigated in a sequence of various numerical experiments. The fields generated by the particles as a result of interaction with the background electric and magnetic fields is not accounted for in the simulation. An X-line is first used to describe the geometry of the magnetotail prior to magnetic reconnection and a study of the behavior of charged particles is done from a microscopic viewpoint. Another important geometry in the magnetotail prior to substorm onset is Bifurcated Current Sheet. The same anal

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38

Adams, Amy Lynn. "Permeability anisotropy and resistivity anisotropy of mechanically compressed mudrocks." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/90036.

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Thesis: Ph. D. in Geotechnical and Geoenvironmental Engineering, Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2014.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 313-322).<br>Permeability anisotropy (the ratio of the horizontal to vertical permeability) is an important parameter used in sedimentary basin models and geotechnical design to model fluid flow, locate hydrocarbon reserves and estimate stress and pressure evolution. The magnitude of the permeability anisotropy for a given mudrock is difficult to mea

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39

Tsourlos, Panagiotis. "Modelling, interpretation and inversion of multielectrode resistivity survey data." Thesis, University of York, 1995. http://etheses.whiterose.ac.uk/14017/.

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40

Masti, Robert Leo. "The Effect of Anomalous Resistivity on the Electrothermal Instability." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/103737.

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The current driven electrothermal instability (ETI) forms when the material resistivity is temperature dependent, occurring in nearly all Z-pinch-like high energy density platforms. ETI growth for high-mass density materials is predominantly striation form which corresponds to magnetically perpendicular mode growth. The striation form is caused by a resistivity that increases with temperature, which is often the case for high-mass density materials. In contrast, low-density ETI growth is mainly filamentation form, magnetically aligned modes, because the resistivity tends to decrease with tempe

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41

Martin, Mathis. "Measurement of the surface resistivity with a cavity resonator." Thesis, Uppsala universitet, FREIA, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-446356.

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The phenomena of radio-frequency vacuum breakdowns is an actual and concrete problem in the physics of particle accelerator since it causes damages in expensive devices. The surface resistivity of materials can be studied in order to better understand this event. To study surface resistivity one can use a cavity resonator where the quality factor is related to the surface resistivity of the walls. Two systems were used, a homemade cookies box cavity and an electrodes cavity, this latter will be used for further experimentations. The quality factor was measured with a VNA meter coupled to the c

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42

Inoue, Keisuke. "ESTIMATION OF DAMAGED ZONE IN SOIL USING RESISTIVITY MONITORING." Kyoto University, 2017. http://hdl.handle.net/2433/225322.

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43

Pandey, Lopa M. S. "Liner characterisation and leak detection using electrical resistivity techniques." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2018. https://ro.ecu.edu.au/theses/2159.

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The resistivity of soil ranges from 7-15 Ωm for Leachate #1 to 20-50 Ωm for Leachate #2. The resistivity decreases with an increase in the proximity to the leak point. Furthermore, the resistivity values obtained with water were nearly 10 times the values observed with landfill leachate as the leaching liquid. Based on the resistivity profiles of soil as observed at different time intervals, the method is found to be effective in determining leakages in the liner. The test results have also been presented for the leakage of Bayer liquor obtained from aluminium manufacturing company in Western

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44

"A STUDY OF THE ELIMINATION OF THE INFINITE POLE IN THE POLE-DIPOLE ELECTRICAL RESISTIVITY ARRAY." Thesis, 2015. http://hdl.handle.net/10388/ETD-2015-12-2386.

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The pole-dipole (PD) electrical resistivity array is used as part of a geophysical technique, which can be used in exploration for mineral, geothermal and hydrological resources. Furthermore, it can be used in archaeological investigations. The PD array is useful in obtaining large depths of investigation, but the array requires one pole to be planted at a greater distance from the other electrodes. Placing the infinite pole is time consuming and costly, especially in rough terrains. It can also be a liability in populated areas. Previous data inversion software assumes the infinite pole to be

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45

Chen, Ping-Hong, and 陳炳宏. "Core-Shell Structure and Pertinent Resistivty-Temperature Properties in Pb0.6Sr0.4TiO3 Materials with Positive-Temperature-Coefficient of Resistivity." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/09544096912419964552.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>87<br>Abstract In this thesis, we study the microstructures, especially the core-shell structures and the corresponding ρ-T properties of Pb0.6Sr0.4TiO3 positive temperature coefficient of resistivity (PTCR) materials. Distinct ρ-T curves of materials were obtained employing different sintering processes, in which microwave sintered specimens exhibit a single Tc at about 380℃, but the specimen sintered by conventional method, on the other hand, shows an intriguing double Tc behavior. Beside the ρ-T properties, conventional sintered specimens possessed high

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DeBenedictis, Jennifer Jean. "Resistivity in Y Ba₂Cu₃O₆₃̣₃₃:." Thesis, 2005. http://hdl.handle.net/2429/16402.

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The resistivity of two high quality YBa₂Cu₃O₆.₃₃₃ single crystals was measured, the first via the Montgomery method, which allows the determination of all three components of the resistivity tensor, and the second via a colinear arrangement of contacts that allows the determination of pa. A comparison of ρ[sub a] between the two crystals allowed the intrinsic behaviour to be separated from the extrinsic behaviour. The intrinsic behaviour of the resistivity was found to be a quadratic temperature dependence, subject to two abrupt and doping independent changes in the fitting parameters, w

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Strobel, Guye. "Electrical resistivity tomography in environmental amelioration." 1996. http://hdl.handle.net/1993/19384.

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48

Chen, S. H., and 陳宣樺. "The resistivity behavior in La0.7Ca0.3Mn1-xNixO3." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/90389935686743868680.

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49

Liu, Hsing-Chih, and 劉倖誌. "Electrical Resistivity of Field Compacted Soils." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/38558245135139541281.

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碩士<br>國立交通大學<br>土木工程系<br>89<br>The quality control of construction of earth structures such as earth dams and clay liners requires a huge number of field tests to determine the water content and the dry density of compacted soil. In the past, standard procedures such as the sand cone method had been used to measure field density, while on the other hand, soil samples had to be oven dried to determine the field water content. However, recent development in the non-destructive testing technology has enable the engineers to shorten the testing periods with devices such as the nuclear density gaug

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50

Maganti, Dharmateja. "Subsurface investigations using high resolution resistivity." 2008. http://hdl.handle.net/10106/1143.

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