Relevant bibliographies by topics / Displacement fields

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Displacement fields'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 June 2025

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Journal articles on the topic "Displacement fields"

1

Epstein, J. S., W. G. Reuter, and D. D. Keiser. "Crack embrittlement displacement fields." Optics and Lasers in Engineering 13, no. 1 (1990): 3–16. http://dx.doi.org/10.1016/0143-8166(90)90036-9.

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TAEPRASARTSIT, SOMPON. "USING VON KARMAN NONLINEAR DISPLACEMENT FUNCTIONS IN THE FINITE ELEMENT ANALYSIS OF FUNCTIONALLY GRADED COLUMN." International Journal of Computational Methods 09, no. 03 (2012): 1250042. http://dx.doi.org/10.1142/s0219876212500429.

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This paper focuses on deriving the exact displacement fields of a functionally graded column (FGC) subjected to mechanical and thermal loads under the assumptions of the Timoshenko beam theory and von Karman strains. Valid only when an axial load is present, the obtained displacement fields are, therefore, not applicable in pure bending analysis. These displacement fields are used as the interpolation functions for formulating static finite element equations whose DOFs are arbitrary constants rather than nodal displacements. The element is super-convergent in von Karman nonlinear analysis, and its superiority over beam elements formulated by using linear exact displacement fields is shown in two examples: (1) the buckling analysis of a stepped FGC, and (2) an FGC subjected to a thermal load. Also investigated is the efficiency of using von Karman nonlinear displacement fields as the interpolation functions for analyzing cases in which the level of nonlinearity is higher than that of the von Karman strain.
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Xia, Yong Jun, and Qian Miao. "Large Deformation Geometric Nonlinear Beam Element Based on U.L. Format." Advanced Materials Research 446-449 (January 2012): 3596–603. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.3596.

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Based on the geometric deformation of the Euler-Bernoulli beam element, the geometric nonlinear Euler-Bernoulli beam element based on U.L. formulation is derived. The element’s transverse first-order displacement field is constructed using the cubic Hermite interpolation polynomial, and the first-order Lagrange interpolation polynomial is used for the axial displacement field. Then the additional displacements induced from the rotation of the elemental are included into the transverse and longitudinal displacement fields, so those displacement fields are expressed as the quadratic function of nodal displacement. Afterwards the nonlinear finite element formulas of Euler-Bernoulli beam element under the form of U.L. formulation are derived using Cauchy strain tensor and the principle of virtual displacements. The total equilibrium equation and tangent stiffness for large displacement geometric nonlinear analysis of frame are obtained in the total coordinate system. The correctness of this element is proved by typical example.
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Honório, Leonardo M., Milena F. Pinto, Maicon J. Hillesheim, Francisco C. de Araújo, Alexandre B. Santos, and Delfim Soares. "Photogrammetric Process to Monitor Stress Fields Inside Structural Systems." Sensors 21, no. 12 (2021): 4023. http://dx.doi.org/10.3390/s21124023.

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This research employs displacement fields photogrammetrically captured on the surface of a solid or structure to estimate real-time stress distributions it undergoes during a given loading period. The displacement fields are determined based on a series of images taken from the solid surface while it experiences deformation. Image displacements are used to estimate the deformations in the plane of the beam surface, and Poisson’s Method is subsequently applied to reconstruct these surfaces, at a given time, by extracting triangular meshes from the corresponding points clouds. With the aid of the measured displacement fields, the Boundary Element Method (BEM) is considered to evaluate stress values throughout the solid. Herein, the unknown boundary forces must be additionally calculated. As the photogrammetrically reconstructed deformed surfaces may be defined by several million points, the boundary displacement values of boundary-element models having a convenient number of nodes are determined based on an optimized displacement surface that best fits the real measured data. The results showed the effectiveness and potential application of the proposed methodology in several tasks to determine real-time stress distributions in structures.
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Konvisar, A. M., V. O. Mikhailov, M. S. Volkova, and V. B. Smirnov. "Model of the Seismic Rupture Surface of the Chignik Earthquake (Alaska, USA) 07.29.2021 Based on SAR Interferometry and GNSS Data." Вулканология и сейсмология 17, no. 5 (2023): 74–83. http://dx.doi.org/10.31857/s0203030623700256.

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The paper presents a new rupture model for the Mw = 8.2 “Chignik” earthquake, which occurred off the coast of the Alaska Peninsula on 29.07.2021. The model is based on the Earth’s surface displacement fields obtained by InSAR (Interferometric synthetic aperture radar) method using images of the ESA Sentinel-1 satellites from 17.07 to 10.08.2021 and data on horizontal displacements at nearest permanent GPS sites from 18.07 to 08.08.2021. Obtained displacement fields include both coseismic and part of postseismic displacements. When constructing a model of the seismic rupture surface, we used F. Pollitz’s solution of the problem of the displacement fields at the surface of a spherical radially stratified planet caused by displacements on a rectangular discontinuity located inside it. For the regularization of the inverse problem, we added the condition that the direction of slip on each element of the fault plane is close to the rake angle, determined from seismological data. In the constructed model, the seismic rupture area was approximated by a single plane with a length of 225 km along the strike, 126 km along the dip, divided into 48 identical rectangles. According to the constructed model, the type of displacements is almost pure thrust, and displacements, in general, occurred throughout all the source area. The maximum displacement was 5.7 m, with an average displacement over the entire plane of 2.2 m, which is close to the USGS and GCMT estimates derived from seismological data.
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Tukiainen, Pekka, and Mark Hughes. "The fracture behavior of birch and spruce in the radial-tangential crack propagation direction at the scale of the growth ring." Holzforschung 67, no. 6 (2013): 673–81. http://dx.doi.org/10.1515/hf-2012-0139.

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Abstract Crack-tip displacement fields have been computed based on digital image correlation for spruce (Picea abies [L.] Karst.) and birch (Betula pendula Roth.) wood, which were submitted to pure mode I loading in the RT-direction under both green and air-dried conditions. Moreover, crack propagation was modeled based on both linear elastic fracture mechanics (LEFM) and nonlinear fracture mechanics, relying on the fictitious crack model (FCM). The measured and modeled load versus the crack-mouth opening displacement (CMOD) curves and displacement fields were compared. In the case of spruce, the load-CMOD curves simulated by the FCM coincide well with the measured ones. On the contrary, measured near crack-tip displacement fields in both green and air-dried spruce are better comparable with the LEFM predictions than with the FCM predictions. In the case of green birch, the simulated FCM curve follows the measured curve quite well, but in air-dried birch the simulated FCM curve has a better fit than the LEFM-curve only before maximum load. In birch, the FCM predicts the displacement fields better than the LEFM. In both species, moisture content has a big effect on the softening behavior. In both spruce and birch, the FCM overestimates the displacements ahead of crack tip, whereas the LEFM model underestimates the displacements.
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Ayasse, Jörg, and Heinrich Müller. "Sculpturing on Discrete Displacement Fields." Computer Graphics Forum 21, no. 3 (2002): 431–40. http://dx.doi.org/10.1111/1467-8659.00603.

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Yang, Xue-Min, and Paul M. Davis. "Deformation due to a rectangular tension crack in an elastic half-space." Bulletin of the Seismological Society of America 76, no. 3 (1986): 865–81. http://dx.doi.org/10.1785/bssa0760030865.

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Abstract Closed, analytic expressions are given for the displacement fields, their derivatives, and stresses from a rectangular crack in an elastic half-space having Burger's vector normal to its surface. Displacements are found by integration of Volterra's formula over the crack area using Mindlin's (1936) point force solutions for the elastic half-space. Differentiation of the displacement fields yields expressions for calculating stress and strain throughout the medium. Contours of stresses and displacements are given for selected geometries. The expressions for displacements give identical values to those calculated using angular dislocations (Comninou and Dundurs, 1975). All solutions are presented as a FORTRAN subroutine to facilitate practical implementation.
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Lee, M. W. "Particle displacements on the wall of a borehole from incident plane waves." GEOPHYSICS 52, no. 9 (1987): 1290–96. http://dx.doi.org/10.1190/1.1442389.

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Particle displacements from incident plane waves at the wall of a fluid‐filled borehole are formulated by applying the seismic reciprocity theorem to far‐field displacement fields. Such displacement fields are due to point forces acting on a fluid‐filled borehole under the assumption of long wavelengths. The displacement fields are analyzed to examine the effect of the borehole on seismic wave propagation, particularly for vertical seismic profiling (VSP) measurements. When the shortest wavelength of interest is approximately 25 times longer than the borehole’s diameter, the scattered displacements are proportional to the first power of incident frequency and borehole diameter. The maximum scattered energy occurs when an incident P‐wave propagates perpendicular to the borehole. Borehole effects on VSP measurements, such as waveform distortion, amplitude variation, and time delay, have been analyzed using the concept of a transfer function. When the shortest wavelength of interest is about 40 times longer than the borehole’s diameter, borehole effects on VSP measurements using a wall‐locking geophone are negligible.
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Feng, Ruitao, Qingyun Du, Huanfeng Shen, and Xinghua Li. "Region-by-Region Registration Combining Feature-Based and Optical Flow Methods for Remote Sensing Images." Remote Sensing 13, no. 8 (2021): 1475. http://dx.doi.org/10.3390/rs13081475.

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While geometric registration has been studied in remote sensing community for many decades, successful cases are rare, which register images allowing for local inconsistency deformation caused by topographic relief. Toward this end, a region-by-region registration combining the feature-based and optical flow methods is proposed. The proposed framework establishes on the calculation of pixel-wise displacement and mosaic of displacement fields. Concretely, the initial displacement fields for a pair of images are calculated by the block-weighted projective model and Brox optical flow estimation, respectively in the flat- and complex-terrain regions. The abnormal displacements resulting from the sensitivity of optical flow in the land use or land cover changes, are adaptively detected and corrected by the weighted Taylor expansion. Subsequently, the displacement fields are mosaicked seamlessly for subsequent steps. Experimental results show that the proposed method outperforms comparative algorithms, achieving the highest registration accuracy qualitatively and quantitatively.
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Dissertations / Theses on the topic "Displacement fields"

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Abolghasem, Amir M. "Numerical modeling of post-seismic displacement fields." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=964204894.

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Abolghasem, Amir M. "Numerical modeling of post-seismic displacement fields /." Stuttgart : Geod. Inst. der Univ. Stuttgart, 2001. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB9459592.

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Svanbro, Angelica. "Speckle interferometry and correlation applied to large-displacement fields /." Luleå : Univ, 2004. http://epubl.luth.se/1402-1544/2004/05.

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Zachariah, Elizabeth. "4-D Modeling of Displacement Vector Fields for Improved Radiation Therapy." VCU Scholars Compass, 2010. http://scholarscompass.vcu.edu/etd/2323.

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In radiation therapy, it is imperative to deliver high doses of radiation to the tumor while reducing radiation to the healthy tissue. Respiratory motion is the most significant source of errors during treatment. Therefore, it is essential to accurately model respiratory motion for precise and effective radiation delivery. Many approaches exist to account for respiratory motion, such as controlled breath hold and respiratory gating, and they have been relatively successful. They still present many drawbacks. Thus, research has been expanded to tumor tracking. This paper presents a spatio-temporal model for four dimensional CT reconstruction. The method begins with a set of initial CT projections and a simultaneously acquired breathing trace. Two methods are explored to model the spatial components: principal component analysis and a pseudoinverse matrix method. An iterative approach is used to match the simulated projections to the actual projections. The simulated projections and the initial projections are evaluated using Normalized Root Mean Square Error (NRMSE). The proposed method shows simulated projections and actual projections match, and as such the model is able to accurately predict the deformation.
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Voosoghi, Behzad. "Intrinsic deformation analysis of the earth surface based on 3-dimensional displacement fields derived from space geodetic measurements." [S.l. : s.n.], 2000. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB8885017.

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Voosoghi, Behzad. "Intrinsic deformation analysis of the earth surface fased on 3-dimensional displacement fields derived from space geodetic measurements." [S.l. : s.n.], 2000. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB8937695.

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Rusovici, Razvan. "Modeling of Shock Wave Propagation and Attenuation in Viscoelastic Structures." Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/29153.

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Protection from the potentially damaging effects of shock loading is a common design requirement for diverse mechanical structures ranging from shock accelerometers to spacecraft. High-damping viscoelastic materials are employed in the design of geometrically complex impact absorbent components. Since shock transients have a broadband frequency spectrum, it is imperative to properly model frequency dependence of material parameters. The Anelastic Displacement Fields (ADF) method is employed to develop new axisymmetric and plane stress finite elements that are capable of modeling frequency dependent material behavior of linear viscoelastic materials. The new finite elements are used to model and analyze behavior of viscoelastic structures subjected to shock loads. The development of such ADF-based finite element models offers an attractive analytical tool to aid in the design of shock absorbent mechanical filters. This work will also show that it is possible to determine material properties’ frequency dependence by iteratively fitting ADF model predictions to experimental results. A series of experiments designed to validate the axisymmetric and plane stress finite element models are performed. These experiments involve the propagation of longitudinal waves through elastic and viscoelastic rods, and behavior of elastomeric mechanical filters subjected to shock. Comparison of model predictions to theory and experiments confirm that ADF-based finite element models are capable of capturing phenomena such as geometric dispersion and viscoelastic attenuation of longitudinal waves in rods as well as modeling the behavior of mechanical filters subjected to shock.<br>Ph. D.
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Nguyen, Tran. "Optical measurement of shape and deformation fields on challenging surfaces." Thesis, Loughborough University, 2012. https://dspace.lboro.ac.uk/2134/10551.

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A multiple-sensor optical shape measurement system (SMS) based on the principle of white-light fringe projection has been developed and commercialised by Loughborough University and Phase Vision Ltd for over 10 years. The use of the temporal phase unwrapping technique allows precise and dense shape measurements of complex surfaces; and the photogrammetry-based calibration technique offers the ability to calibrate multiple sensors simultaneously in order to achieve 360° measurement coverage. Nevertheless, to enhance the applicability of the SMS in industrial environments, further developments are needed (i) to improve the calibration speed for quicker deployment, (ii) to broaden the application range from shape measurement to deformation field measurement, and (iii) to tackle practically-challenging surfaces of which specular components may disrupt the acquired data and result in spurious measurements. The calibration process typically requires manual positioning of an artefact (i.e., reference object) at many locations within the view of the sensors. This is not only timeconsuming but also complicated for an operator with average knowledge of metrology. This thesis introduces an automated artefact positioning system which enables automatic and optimised distribution of the artefacts, automatic prediction of their whereabouts to increase the artefact detection speed and robustness, and thereby greater overall calibration performance. This thesis also describes a novel technique that integrates the digital image correlation (DIC) technique into the present fringe projection SMS for the purpose of simultaneous shape and deformation field measurement. This combined technique offers three key advantages: (a) the ability to deal with geometrical discontinuities which are commonly present on mechanical surfaces and currently challenging to most deformation measurement methods, (b) the ability to measure 3D displacement fields with a basic single-camera single-projector SMS with no additional hardware components, and (c) the simple implementation on a multiple-sensor hardware platform to achieve complete coverage of large-scale and complex samples, with the resulting displacement fields automatically lying in a single global coordinate system. A displacement measurement accuracy of ≃ 1/12,000 of the measurement volume, which is comparable to that of an industry-standard DIC system, has been achieved. The applications of this novel technique to several structural tests of aircraft wing panels on-site at the research centre of Airbus UK in Filton are also presented. Mechanical components with shiny surface finish and complex geometry may introduce another challenge to present fringe projection techniques. In certain circumstances, multiple reflections of the projected fringes on an object surface may cause ambiguity in the phase estimation process and result in incorrect coordinate measurements. This thesis presents a new technique which adopts a Fourier domain ranging (FDR) method to correctly identifying multiple phase signals and enables unambiguous triangulation for a measured coordinate. Experiments of the new FDR technique on various types of surfaces have shown promising results as compared to the traditional phase unwrapping techniques.
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Mantiloni, Lorenzo. "Modelling displacement and stress fields in hydrothermal regions: the case of a thermo-poro-elastic inclusion in a poro-elastic half-space." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18151/.

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Le regioni idrotermali sono interessate da una grande varietà di fenomeni naturali, tra cui episodi di rigonfiamento e subsidenza del suolo. Tra di esse, le caldere consentono di studiare le interazioni tra i processi magmatici e le dinamiche dei fluidi di cui sono imbevute le rocce porose nella crosta superficiale. Un'area idrotermale soggetta a instabilità periodiche è la caldera dei Campi Flegrei, nell'Italia meridionale. Una delle crisi più recenti, oggetto di numerosi studi e ricerche, ha avuto luogo nel biennio 1982-84. La tesi si propone di sviluppare un modello di sorgente deformativa che prevede una regione termo-poro-elastica inclusa in un solido poro-elastico semi-illimitato, nel caso in cui questa regione abbia forma cilindrica e subisca cambiamenti di temperatura e pressione di poro al suo interno. Viene fornita una soluzione semi-analitica per spostamenti e sforzi così generati all'interno e all'esterno della sorgente deformativa, e i risultati sono paragonati a quelli ottenuti tramite un approccio completamente numerico, insieme a quelli di altri tre modelli. Lo spostamento verticale risultante alla superficie libera è in buon accordo con quello prodotto dal modello di Mogi, e riproduce il pattern di deformazione verticale osservato presso i Campi Flegrei durante la crisi del 1982-84. Tuttavia, vi sono differenze nelle ampiezze delle componenti dello spostamento tra il nostro modello e gli altri due considerati. I risultati per il campo di sforzi sul piano mediano della sorgente indicano un regime compressivo al suo interno, mentre si evidenzia un regime distensivo nella regione sovrastante, e un regime trascorrente nella regione esterna del semispazio. Questo è in accordo con la distribuzione eterogenea dei meccanismi focali ottenuti dai dati sismologici relativi allo stesso episodio presso i Campi Flegrei. Alla fine dell’opera, sono discussi i limiti di applicabilità del modello e ne sono indicati alcuni possibili sviluppi ulteriori.
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Walbert, Katrin. "Ectomycorrhizal communities associated with a Pinus radiata plantation in the North Island, New Zealand." Lincoln University, 2008. http://hdl.handle.net/10182/658.

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Aboveground and belowground ectomycorrhizal (ECM) communities associated with different age classes of the exotic plantation species Pinus radiata were investigated over the course of two years in the North Island of New Zealand. ECM species were identified with a combined approach of morphological and molecular (restriction fragment length polymorphism (RFLP) and DNA sequencing) analysis. ECM species richness and diversity of a nursery in Rotorua, and stands of different ages (1, 2, 8, 15 and 26 yrs of age at time of final assessment) in Kaingaroa Forest, were assessed above- and belowground; furthermore, the correlation between the above- and belowground ECM communities was assessed. It was found that the overall and stand specific species richness and diversity of ECM fungi associated with the exotic host tree in New Zealand were low compared to similar forests in the Northern Hemisphere but similar to other exotic plantations in the Southern Hemisphere. Over the course of this study, 18 ECM species were observed aboveground and 19 ECM species belowground. With the aid of molecular analysis the identities of Laccaria proxima and Inocybe sindonia were clarified. In the aboveground study, five species were found associated with P. radiata that were previously not reported with this host in New Zealand (Inocybe sindonia, Lactarius rufus, Lycoperdon gunii, Rhizopogon pseudoroseolus and Wilcoxina mikolae). Belowground, the species Psudotomentella sp., P. tristis, R. luteorubescens, Tomentella sp., Wilcoxina mikolae were found as new associates of P. radiata in New Zealand, additionally nine ECM types were found that could not be identified with molecular analysis. There was little correlation between the species fruiting and the species colonising root tips. Only seven species were found in common between the above- and belowground communities, furthermore the dominant species aboveground were not observed in the belowground ECM communities. The influence of host age on the above- and belowground ECM communities of different age classes of P. radiata plantations was investigated. The aboveground species richness increased from the nursery to the oldest age group investigated (26 yrs), while diversity increased to the 15 yr old age group and decreased slightly to the oldest stand. A clear sequence of ECM species changes was observed to be related to stand age with a growing complexity over the chronosequence. The belowground ECM communities showed a different picture and richness and diversity initially decreased from the nursery to the outplanting but increased thereafter. Belowground no change in ECM composition that was directly related to the age of the host was observed, but two distinct groups of ECM species were found – a 'young' and a 'plantation forest' group, with the respective discriminating species being Rhizopogon rubescens and Type unknown Basidiomycete/Amanita muscaria. Another aspect of the study was the fate of the nursery ECM species in the outplanting and the arrival of non-nursery species. The ECM communities of seedlings in the nursery were investigated in 2006 and these seedlings were followed up over eight assessments in the field for one year, furthermore data from the 1-, 2 and 8 yr old plantation stands was analysed. It was found that the nursery species do survive the first year of outplanting and are dominant in the first year. The first non-nursery species occurred six months after outplanting but was only in minor abundance. Nursery ECM were dominant for two years after the seedlings were planted, and were completely replaced after seven years. Rhizopogon rubescens was found to be the most persistent and dominant species in the outplanting, facilitating the successful establishment of the seedlings in the plantation forest.
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Books on the topic "Displacement fields"

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Muth, Lorant A. Displacement errors in antenna near-field measurements and their effect on the far field. U.S. Dept. of Commerce, National Bureau of Standards, 1986.

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Brunsing, Thomas P. The block displacement method field demonstration and specifications. U.S. Environmental Protection Agency, Hazardous Waste Engineering Research Laboratory, 1987.

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Committee for Internally Displaced Karen People (Thailand) and Thailand Burma Border Consortium, eds. Internal displacement and vulnerability in Eastern Burma: With field research. Thailand Burma Border Consortium, 2004.

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Whyatt, J. K. Field measurement of rock displacement during sinking of a deep rectangular shaft. U.S. Dept of the Interior, Bureau of Mines, 1987.

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Committee for Internally Displaced Karen People (Thailand) and Thailand Burma Border Consortium, eds. Protracted displacement and militarisation in Eastern Burma: With field research and updates. Thailand Burma Border Consortium, 2009.

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Consortium, Thailand Burma Border. Internal displacement and protection in Eastern Burma: With field research and situation updates. Thailand Burma Border Consortium, 2005.

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Molenkamp, F. Evaluation of properties of stress field elements with nodal displacements as variables. UMIST, 1999.

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(Thailand), Committee for Internally Displaced Karen People. Displacement and poverty in south east Burma/ Myanmar: With field assessments and situation updates. Thailand Burma Border Consortium, 2011.

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universitet, Uppsala, ed. Displacement electrophoresis, a method offering some unique possibilities in the field of protein separation. Uppsala University, 1986.

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United States. National Aeronautics and Space Administration., ed. Detection of in-plane displacements of acoustic wave fields using extrinsic Fizeau fiber interferometric sensors. National Aeronautics and Space Administration, 1991.

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Book chapters on the topic "Displacement fields"

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Jähne, Bernd. "Displacement Vector Fields." In Digital Image Processing. Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-662-11565-7_16.

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Jähne, Bernd. "Displacement Vector Fields." In Digital Image Processing. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-662-21817-4_16.

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Jähne, Bernd. "Displacement Vector Fields." In Digital Image Processing. Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-662-03174-2_16.

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Lifshitz, Gal, and Dan Raviv. "Unsupervised Volumetric Displacement Fields Using Cost Function Unrolling." In Biomedical Image Registration, Domain Generalisation and Out-of-Distribution Analysis. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-97281-3_22.

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Schwarz, Jodi. "Climate Change, Human Displacement, and STEM Education: Toward a More Transdisciplinary and Inclusive Culture of Science." In Migration, Displacement, and Higher Education. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-12350-4_18.

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AbstractIn this chapter I discuss opportunities for undergraduate education to support STEM scholars and students in centering social justice so that science can more meaningfully address global challenges such as the forced migration of people living in regions on the front lines of climate change. Traditional academic training structures in the STEM fields pose challenges for broadening STEM, so I suggest ideas for academic experiences that incorporate human dimensions into science education. As an example, the Grand Challenges program at Vassar College is an initiative that supports students and faculty in developing perspectives and skills that transcend traditional disciplines and in building community to meet global grand challenges, such as climate change. By creating pathways for students, faculty, and staff to form communities of practice, the Grand Challenges program examines the culture and practice of STEM fields and seeks to cultivate an Inclusive Excellence framework in which science can excel only when its practitioners bring diverse perspectives, lived experiences, knowledges, and skills to solving global challenges.
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Sciammarella, C. A., L. Lamberti, F. M. Sciammarella, and A. Boccaccio. "The Kinematics and Dynamics of 3-D Displacement Fields." In Advancement of Optical Methods in Experimental Mechanics, Volume 3. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00768-7_7.

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Qiao, Guo Ying, and Jean-Louis Batoz. "Displacement Fields and Large Deformation Analysis of 3-D Beams." In Lecture Notes in Engineering. Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-83015-0_36.

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Zhao-Ping, Jiao, Sheng Yong, and Chang-Chung Wu. "Investigation and Improvement of Rational Displacement Fields of Incompatible Element." In Computational Mechanics ’95. Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-79654-8_263.

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Hiromitsu, Kaito, Shinichiro Nakashima, Norikazu Shimizu, Morimasa Tsuda, and Shigeki Ichikawa. "Long-term displacement monitoring by GPS - case study of a large rockfill dam." In Rock Mechanics and Engineering Geology in Volcanic Fields. CRC Press, 2022. http://dx.doi.org/10.1201/9781003293590-57.

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Haußecker, Horst, and Bernd Jähne. "A Tensor Approach for Precise Computation of Dense Displacement Vector Fields." In Informatik aktuell. Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60893-3_20.

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Conference papers on the topic "Displacement fields"

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Zhu, Yihong, and Bo Peng. "Neural Operator-Based Framework for Time Efficient Denoising of Displacement Fields in Ultrasound Elastography." In 2024 IEEE International Conference on Systems, Man, and Cybernetics (SMC). IEEE, 2024. https://doi.org/10.1109/smc54092.2024.10831893.

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Simek, James C. "The Effects of Angular Displacement on Magnetic Flux Leakage Metal Loss Signals." In CORROSION 2009. NACE International, 2009. https://doi.org/10.5006/c2009-09122.

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Abstract Magnetic flux leakage is one of the most common and robust methods of ILI (In Line Inspection) used by pipeline operators worldwide to detect and characterize a broad range of pipeline features and anomalies. Magnetic flux leakage data signals are influenced by the shape and configuration of metal loss zones; with the feature shapes used as a basis for algorithm development and interpretation techniques developed to provide estimates of metal loss lengths, widths and depths. For pipelines, primary lengths and widths of features may be oriented in any random direction with respect to the pipeline axis and applied magnetic fields. In addition to field levels, material properties, velocity effects, length, width, and depth, feature orientation will also influence the magnetic field data acquired for typical pipeline metal loss anomalies. Difficulties encountered in characterizing specific classes of metal loss features have led to the development, implementation, and use of tools employing multiple axis sensors in an effort to improve performance for these categories of metal loss features. To demonstrate the effects of feature orientation, examples will be presented with the results providing insights into the signal response for metal loss zones as the angular orientation of the features are varied within the applied magnetic field.
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Liu, Shouju, Kang Yang, and Chao Wang. "Small displacements sensing via enhanced temporal measurement." In 3D Image Acquisition and Display: Technology, Perception and Applications. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/3d.2024.jm4a.12.

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This paper proposed a novel precise measurement of small displacement by MMF. It not only demonstrates the potential of multimode fibers in high-precision measurement fields but also provides important technical measurement in optical systems.
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Feng, Fan, and Chen Liang. "High-resolution Space-variant Shack–Hartmann Wavefront Reconstruction." In Adaptive Optics: Methods, Analysis and Applications. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/aopt.2024.of1f.5.

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Space-variant wavefront reconstruction plays a crucial role in large field-of-view imaging. Instead of using affine transformation, displacement fields of subimages within Shack–Hartmann sensor are evaluated using polynomial model, resulting in improved resolution for space-variant functions.
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Pedersen, Hans Køhling. "Displacement mapping using flow fields." In the 21st annual conference. ACM Press, 1994. http://dx.doi.org/10.1145/192161.192229.

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Ruiz, Pablo D. "Tomographic sensing of displacement fields." In Optical Sensors. OSA, 2013. http://dx.doi.org/10.1364/sensors.2013.sw3d.2.

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Anandan, P., and Mark F. Cullen. "Robust Parallel Computation Of Image Displacement Fields." In Robotics and IECON '87 Conferences, edited by David P. Casasent and Ernest L. Hall. SPIE, 1988. http://dx.doi.org/10.1117/12.942744.

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Røe, P., F. Georgsen, A. R. Syversveen, and O. Lia. "Fault Displacement Modelling Using 3D Vector Fields." In 12th European Conference on the Mathematics of Oil Recovery. EAGE Publications BV, 2010. http://dx.doi.org/10.3997/2214-4609.20144968.

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Chen, Zhuoyuan, Hailin Jin, Zhe Lin, Scott Cohen, and Ying Wu. "Large Displacement Optical Flow from Nearest Neighbor Fields." In 2013 IEEE Conference on Computer Vision and Pattern Recognition (CVPR). IEEE, 2013. http://dx.doi.org/10.1109/cvpr.2013.316.

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Johansson, Gustaf, Daniel Forsberg, and Hans Knutsson. "Globally optimal displacement fields using local tensor metric." In 2012 19th IEEE International Conference on Image Processing (ICIP 2012). IEEE, 2012. http://dx.doi.org/10.1109/icip.2012.6467520.

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Reports on the topic "Displacement fields"

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Hemmersam, Peter, Håvard Breivik-Khan, Morgan Ip, and Tone Selmer-Olsen. The Role of Urban Public Spaces in Managing Displacement in Norway. Institute of Development Studies, 2022. http://dx.doi.org/10.19088/ids.2022.041.

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Refugees, temporarily displaced people, and migrants who arrive in Norwegian cities would benefit from equitable access to urban public spaces. Research suggests that the design and management of public urban spaces and local neighbourhood centres can improve migrants’ wellbeing and encourage local cross-cultural interactions. Permanent architectural and urban spaces planned and built for emergency purposes should benefit people who are displaced as well as host communities. To achieve this, urban planning, and migration and displacement management – two mostly separate fields of governance – should collaborate and learn from each other.
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Krivoi, Kallmeyer, and Baranyak. L52199 Nopig Metal-Loss Detection System for Non-Piggable-Pipelines. Pipeline Research Council International, Inc. (PRCI), 2005. http://dx.doi.org/10.55274/r0011343.

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This project investigated and upgraded the digital filtering used to interpret NoPig displacement data. This upgrade should allow the system to be used on long seam welded pipes. Limited laboratory testing was performed to show the improvement on ERW pipe. The NoPig method is a non-destructive testing method for unpiggable pipelines which uses above ground measurements for detecting and sizing wall thickness anomalies like corrosion. The method uses an applied current containing several distinct frequencies between two points on a pipeline up to 1 km apart. The resultant magnetic field is measured above ground along the pipe. The measurement data is processed to determine the deviation of an equivalent current line from the center of the pipe, called displacement. Due to the skin effect and the magnetic stray flux, variation of the displacement with frequency indicates a local wall thinning of the pipeline. ERW-pipes produce an offset in displacements caused by different magnetic and electric properties in the area of the long seam. This offset changes from joint to joint because the clock position of long seams in neighboring joints is different. In order to detect defects this offset must be filtered or removed from the data. The filtering procedure and software developed in this project significantly enhances the probability of detection in ERW pipelines over previous filtering schemes. Additionally upgrades in the system hardware reduced uncertainty in the definition of displacements. In the limited data set of a few pipe joints possessed at NoPig�s Hildesheim offices, defect detection was improved from 45% to 90% in and ERW pipe with artificial defects. Although these results are very encouraging a larger more controlled test is needed to determine the probability of detection for the NoPig system in long seam welded pipe.
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Rob Beard. FIELD TRIALS OF NEWLY DEVELOPED POSITIVE DISPLACEMENT SUBMERSIBLE PUMP. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/823233.

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Hanson, P. J., D. E. Todd, N. T. Edwards, and M. A. Huston. Field performance of the Walker Branch throughfall displacement experiment. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/41269.

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Rob Beard and Leland Traylor. FIELD TRIALS OF NEWLY DEVELOPED POSITIVE DISPLACEMENT SUBMERSIBLE PUMP. Office of Scientific and Technical Information (OSTI), 2002. http://dx.doi.org/10.2172/820949.

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Khan, Asad, Angeli Jayme, Imad Al-Qadi, and Gregary Renshaw. Embedded Energy Harvesting Modules in Flexible Pavements. Illinois Center for Transportation, 2024. http://dx.doi.org/10.36501/0197-9191/24-008.

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Energy from pavements can be harvested in multiple ways to produce clean energy. One of the techniques is electromagnetic energy harvesting, in which mechanical energy from vehicles is captured in the form of input displacement to produce electricity. In this study, a rack-and-pinion electromagnetic energy harvester proposed in the literature as a speed bump is optimized for highway-speed vehicles. A displacement transfer plate is also proposed, with a minimum depth of embedment in the pavement to carry input displacements from passing vehicles and excite the energy harvester. The energy harvester was designed, and kinematic modeling was carried out to establish power–output relations as a function of rack velocity. Sensitivity analysis of various parameters indicated that, for high-speed applications where rack velocities are relatively high, small input excitations could be harnessed to achieve the rated revolutions per minute (RPM) of the generator. A set of laboratory tests was conducted to validate the kinematic model, and a good correlation was observed between measured and predicted voltages. Dynamic modeling of the plate was done for both recovery and compression to obtain the plate and rack velocities. Using Monte Carlo simulation, the plate was designed for a class-9 truck with wide-base tires moving at 128 km/h. Design and layout of the energy harvester with a displacement transfer plate was proposed for field validation. The energy harvester with the displacement plate could be integrated with transverse rumble strips in construction zones and near diversions. Hence, it could be used as a standalone system to power roadside applications such as safety signs, road lights, speed cameras, and vehicle-to-infrastructure (V2I) systems.
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Muth, Lorant A. Displacement errors in antenna near-field measurements and their effect on the far field. National Bureau of Standards, 1986. http://dx.doi.org/10.6028/nbs.tn.1306.

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Collyer, Michael, Dolf te Lintelo, Thabani Mutambasere, and Tahir Zaman. Moving Targets: Social Protection as a Link Between Humanitarianism, Development and Displacement. Institute of Development Studies, 2022. http://dx.doi.org/10.19088/basic.2022.017.

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Despite the widespread concern with social protection in the field of development, it has had little impact on displacement until very recently. UNHCR has had a Social Protection Unit since 2009, but social protection is barely mentioned in either the Global Compact on Refugees or the Global Compact for Safe, Orderly and Regular Migration, both agreed in 2018. The period since 2018 has seen a growth of research interest and new policy development. This represents the latest appearance of the humanitarian-development nexus in the field of displacement. This nexus is a long-standing one and is inherent in the term ‘durable solution’ as the only effective end of displacement. Unfortunately, there are few recognised successes, and durable solutions are enjoyed by only a tiny proportion of the growing number of displaced people in the world today. This makes renewed attention to the humanitarian-development nexus all the more urgent. In this paper we review the relationship between a humanitarian response to initial displacement and longer-term development planning, as well as the recent range of research and policy responses in this field. These demonstrate significant potential of social protection. We go on to consider six areas of developing theorisation in order to inform what would constitute success in the expanding inclusion of displaced people in social protection programmes or systems. We conclude with four suggestions where further research in this area can help to determine how and if the potential for social protection to offer more sustainable responses to displacement is being realised.
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Hanson, P. J., D. E. Todd, M. A. Huston, J. D. Joslin, J. L. Croker, and R. M. Auge. Description and field performance of the Walker Branch throughfall displacement experiment: 1993--1996. Office of Scientific and Technical Information (OSTI), 1998. http://dx.doi.org/10.2172/296852.

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Stulen. L51628 A Transient Far-Field Model of the Acoustic Emission in Buried Pipelines. Pipeline Research Council International, Inc. (PRCI), 1986. http://dx.doi.org/10.55274/r0011317.

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This report describes the development of an analytical model to generate synthetic acoustic emission (AE) propagating in a buried gas transmission pipeline in response to a source. The sources are assumed to be transient forces acting at a point in the pipe wall. The solution of the model is the set of displacements at a given location relative to the point source. These displacements are the representations of the AE waveforms.
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