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Journal articles on the topic 'Relative displacement'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Snowden, Robert J. "Sensitivity to Relative and Absolute Motion." Perception 21, no. 5 (1992): 563–68. http://dx.doi.org/10.1068/p210563.

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The threshold of sensitivity to movement could be governed by mechanisms that are sensitive either to change in spatial position, or directly to the movement itself. The use of spatially complex patterns (random-dot patterns) has been suggested to eliminate the former strategy allowing examination of the movement detecting mechanisms in isolation. By means of such a technique, thresholds for directional judgements were determined for patterns which underwent either a simple displacement or a shearing displacement. Thresholds for shearing motion were found to be around one half of those for sim

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2

Li, Chun Zhi, Yong Wen, and Bin Liu. "FBG Sensor Technique for Dynamic Relative Displacements Measurement." Applied Mechanics and Materials 347-350 (August 2013): 233–36. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.233.

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The technique of optical fiber grating with high tensile strength, small size, and light weight has been widely used for temperature and strain measurement. In this paper, a new flexible fiber Bragg grating sensing beam including its design, calibration, and application is presented for effectively measuring dynamic relative displacement inside the assembled joints in a shaking table test. The two FBG sensors are encapsulated in one flexible arched-beam slice, while FBG sensors are separately located in up-down position of one flexible slice. The arched-beam-based FBG sensor has been fabricate

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Malarski, Ryszar, Kamil Nagórski, and Marek Woźniak. "Application of Inclinometer Measurements for Relative Horizontal Displacement Investigations on Landslide Grounds." Reports on Geodesy and Geoinformatics 94, no. 1 (2013): 6–13. http://dx.doi.org/10.2478/rgg-2013-0002.

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Abstract One of the basic criterion for safety evaluation of structures erected on embankment or sliding slopes is relative horizontal displacement at different elevations. Relative horizontal displacements beneath ground surfaces are performed with inclinometer measurements. This report presents results on horizontal relative ground displacements with the probe SISGEO S242SV30. Investigations were performed with two inclinometer columns 14m height embedded in Warsaw Bank Slope. Mean square error of single observation was determined and mean relative errors of relative displacements in relatio

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4

Aitken, Wayne. "Total Relative Displacement of Permutations." Journal of Combinatorial Theory, Series A 87, no. 1 (1999): 1–21. http://dx.doi.org/10.1006/jcta.1998.2943.

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5

Mizoshiri, Isao, and Yoshiharu Koya. "Displacement, Strain and Relative Optical Flow." IEEJ Transactions on Electronics, Information and Systems 121, no. 5 (2001): 928–32. http://dx.doi.org/10.1541/ieejeiss1987.121.5_928.

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6

Nickas, G. D. "Reversing relative displacement in rolling fluids." American Journal of Physics 57, no. 10 (1989): 907–12. http://dx.doi.org/10.1119/1.15845.

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7

Waterhouse, William C. "Displacement operators relative to group matrices." Linear Algebra and its Applications 169 (May 1992): 41–47. http://dx.doi.org/10.1016/0024-3795(92)90169-b.

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8

Ohta, Shin-ichi, and Asuka Takatsu. "Displacement convexity of generalized relative entropies." Advances in Mathematics 228, no. 3 (2011): 1742–87. http://dx.doi.org/10.1016/j.aim.2011.06.029.

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9

Peng, Wen Fei, Si Jia Jiao, Xue Dao Shu, and Kang Sheng Zhang. "Study of the Metal Flow Law on Cross Wedge Rolling Asymmetric Shaft." Applied Mechanics and Materials 184-185 (June 2012): 501–4. http://dx.doi.org/10.4028/www.scientific.net/amm.184-185.501.

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Finite element model of Cross wedge rolling asymmetric shaft is established, contrasting with symmetrical rolling, the axial relative displacement of weak-side and strong-side’s metal in asymmetric cross wedge rolling is analyzed. The results show that: axial relative displacement asymmetrical rolling on the weak-side undergo the process of “increase-decrease-unchangeableness” and axial non-uniform deformation increases; axial relative displacements on the strong-side undergo the process of “decrease- unchangeableness” and axial non-uniform deformation decreases. The results provide a theoreti

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10

Feng, Y., T. M. Abney, R. J. Okamoto, R. B. Pless, G. M. Genin, and P. V. Bayly. "Relative brain displacement and deformation during constrained mild frontal head impact." Journal of The Royal Society Interface 7, no. 53 (2010): 1677–88. http://dx.doi.org/10.1098/rsif.2010.0210.

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This study describes the measurement of fields of relative displacement between the brain and the skull in vivo by tagged magnetic resonance imaging and digital image analysis. Motion of the brain relative to the skull occurs during normal activity, but if the head undergoes high accelerations, the resulting large and rapid deformation of neuronal and axonal tissue can lead to long-term disability or death. Mathematical modelling and computer simulation of acceleration-induced traumatic brain injury promise to illuminate the mechanisms of axonal and neuronal pathology, but numerical studies re

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11

Hess, D. P., and A. Soom. "The Effects of Relative Angular Motions on Friction at Rough Planar Contacts." Journal of Tribology 115, no. 1 (1993): 96–101. http://dx.doi.org/10.1115/1.2920992.

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Changes in friction due to angular motions at rough planar contacts are investigated using a compliant contact model that isolates an angular degree-of-freedom. Expressions are developed that relate the real area of contact, the contact forces and the line-of-action of the resultant normal contact force to the angular displacement for both periodic and random rough surfaces. We assume that the friction force is proportional to the real area of (elastic) contact. For a periodic rough surface, consisting of an array of hemispherical asperities of equal height and radius, the friction force is sh

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12

Phinney, Ray, Robert Wilson, Brian Hays, Kristi Peters, and Robert Patterson. "Spatial Displacement Limits for Cyclopean (Stereoscopic) Apparent-Motion Perception." Perception 23, no. 11 (1994): 1287–300. http://dx.doi.org/10.1068/p231287.

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The range of spatial displacements over which cyclopean (stereoscopic) apparent motion is perceived was investigated. The cyclopean stimuli were created from retinal disparity embedded in dynamic random-dot stereograms. In one experiment, the displacement range for crossed-disparity cyclopean motion was compared with that for luminance-domain motion. The results showed that cyclopean motion was perceived over spatial displacements that were about two to three times larger than the displacements over which luminance motion was perceived. In a second experiment, the displacement range for crosse

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13

Zhao, Hanwei, Youliang Ding, Satish Nagarajaiah, and Aiqun Li. "Longitudinal Displacement Behavior and Girder End Reliability of a Jointless Steel-Truss Arch Railway Bridge during Operation." Applied Sciences 9, no. 11 (2019): 2222. http://dx.doi.org/10.3390/app9112222.

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The long length and complex service load form conflicts with the low limits of longitudinal and transverse displacements of jointless bridge design. The longitudinal displacements of the Nanjing Dashengguan Yangtze River Bridge, a jointless steel-truss arch railway bridge, and its girder end reliability are investigated in this article. The time–frequency characteristics of the longitudinal displacements of bearings and expansion joints are analyzed using the empirical wavelet transform. The long-term characteristics of the longitudinal displacements of bearings and expansion joints in the ope

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14

Lanovaz, Joel L., Siriporn Khumsap, and Hilary M. Clayton. "Quantification of three-dimensional skin displacement artefacts on the equine tibia and third metatarsus." Equine and Comparative Exercise Physiology 1, no. 2 (2004): 141–50. http://dx.doi.org/10.1079/ecep200415.

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AbstractRoutine study of three-dimensional (3D) tarsal kinematics is hampered by errors due to the displacement of skin surface-tracking markers relative to the underlying bones. Reliable kinematics can be obtained with bone-fixed markers, but an accurate, non-invasive method would have more applications. Simultaneous kinematic data from skin-based and bone-fixed markers attached to the tibia and third metatarsus were collected from three trotting subjects. The motion of the skin-based markers was extracted relative to the underlying bone motion tracked using the bone-fixed markers. The 3D ski

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15

Tong, Joshua, Lauriane Jugé, Peter GR Burke, et al. "Respiratory-related displacement of the trachea in obstructive sleep apnea." Journal of Applied Physiology 127, no. 5 (2019): 1307–16. http://dx.doi.org/10.1152/japplphysiol.00660.2018.

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Tracheal displacement is thought to be the primary mechanism by which changes in lung volume influence upper airway patency. Caudal tracheal displacement during inspiration may help preserve the integrity of the upper airway in response to increasing negative airway pressure by stretching and stiffening pharyngeal tissues. However, tracheal displacement has not been previously quantified in obstructive sleep apnea (OSA). Accordingly, we aimed to measure tracheal displacements in awake individuals with and without OSA. The upper head and neck of 34 participants [apnea-hypopnea index (AHI) = 2–7

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16

Kim, Jung-Ha, Hyun-Jun Kim, Jong-Su Kim, Sung-Geun Lee, and Dong-Hoan Seo. "Relative azimuth estimation algorithm using rotational displacement." Journal of the Korean Society of Marine Engineering 38, no. 2 (2014): 188–94. http://dx.doi.org/10.5916/jkosme.2014.38.2.188.

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17

Shimazaki, Masahiko, Tohru Kanda, and Hitoshi Miyamoto. "PTV Algorithm Using Relative Displacement of Particles." Journal of the Visualization Society of Japan 19, Supplement2 (1999): 181–82. http://dx.doi.org/10.3154/jvs.19.supplement2_181.

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18

MATSUYA, Iwao, and Ikuo IHARA. "Relative-displacement sensor using air-coupled ultrasound." Proceedings of Mechanical Engineering Congress, Japan 2019 (2019): J40150. http://dx.doi.org/10.1299/jsmemecj.2019.j40150.

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19

McCabe, R. P., S. S. Kohles, S. V. Chelikani, and R. Vanderby. "A Device for Measuring Relative Angular Displacement." Journal of Biomechanical Engineering 120, no. 2 (1998): 299–302. http://dx.doi.org/10.1115/1.2798316.

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A simple, inexpensive, and accurate way to measure relative segmental rotations resulting from torsional loadings locally is described. To measure these rotations, we fabricated a planar spatial linkage (open-loop kinematic chain) requiring only one rotational displacement transducer. This paper describes this device, defines its kinematics, and examines its accuracy.

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20

Schanack, Frank, Óscar Ramón Ramos, Juan Patricio Reyes, and Marcos J. Pantaleón. "Relative Displacement Method for Track-Structure Interaction." Scientific World Journal 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/397515.

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The track-structure interaction effects are usually analysed with conventional FEM programs, where it is difficult to implement the complex track-structure connection behaviour, which is nonlinear, elastic-plastic and depends on the vertical load. The authors developed an alternative analysis method, which they call the relative displacement method. It is based on the calculation of deformation states in single DOF element models that satisfy the boundary conditions. For its solution, an iterative optimisation algorithm is used. This method can be implemented in any programming language or ana

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21

Ohta, Shin-Ichi, and Asuka Takatsu. "Displacement convexity of generalized relative entropies. II." Communications in Analysis and Geometry 21, no. 4 (2013): 687–785. http://dx.doi.org/10.4310/cag.2013.v21.n4.a1.

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22

Nicolas, Adolphe, and Françoise Boudier. "Large shear zones with no relative displacement." Terra Nova 20, no. 3 (2008): 200–205. http://dx.doi.org/10.1111/j.1365-3121.2008.00806.x.

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23

Ruangrassamee, Anat, and Kazuhiko Kawashima. "Relative displacement response spectra with pounding effect." Earthquake Engineering & Structural Dynamics 30, no. 10 (2001): 1511–38. http://dx.doi.org/10.1002/eqe.75.

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24

Hüseyin, Fırat Kayiran. "Numerical analysis of displacements in circular discs applied with different materials." Asia Mathematika 5, no. 1 (2021): 168–77. https://doi.org/10.5281/zenodo.4734242.

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Displacement (displacement) is the ejection of the disc relative to its normal position. In this study; Radial displacements from the inner surface to the outer surface of discs consisting of Tungsten carbide (WC), Boron carbide (B4C), Silicon Carbide (SSIC), Silicon Nitride (Si3N4) and Carbon Glass Fiber exposed to linear decreasing temperature distributions (displacement) has been analyzed analytically. The displacement values obtained for the temperatures of  30\(^\circ \)C, -45\(^\circ \)C, -60\(^\circ \)C, -75\(^\circ \)C, -90\(^\circ \)C and -105\(^\circ \)C were shared with the gra

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25

Musa, Idris, and John Hedley. "RF Line-Element Filters for Structural-Health-Monitoring Applications." Sensors 22, no. 22 (2022): 8908. http://dx.doi.org/10.3390/s22228908.

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RF-based sensors are an attractive option for structural-health-monitoring applications, due to the ease of access of interrogating such sensors. However, in most work, only scalar quantities are measured, giving no indication of the direction of strain or displacements. In this paper, a novel approach to displacement sensing is presented, in which relative displacements are tracked in all three degrees of freedom. The sensor design is based on a pair of coupled line-element filters whose frequency-dependent forward-power transfer is sensitive to relative positions between the two filters. Mul

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26

Quan, Dengzhou, Shaobo Chai, Yuling Wang, Zhishuang Fan, and Yonghong Bu. "3-D Numerical Simulation of Seismic Response of the Induced Joint of a Subway Station." Buildings 13, no. 5 (2023): 1244. http://dx.doi.org/10.3390/buildings13051244.

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In recent times, induced joints have been set along the length of subway stations in order to avoid disordered cracking of the main structures occurring due to temperature stress, concrete shrinkage, creep, or uneven foundation settlement. At present, the use of induced joints in subway station structures is mainly based on engineering experience. The seismic response of induced joints has not yet been well explained, much less mastered. In this study, a 3-D numerical model of a subway station incorporating certain sorts of induced joints is established systematically. Then, the seismic respon

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27

Melnychuk, V. O., A. V. Savchuk, M. A. Hrichanyi, and I. Yu Khomenko. "ANALYSIS OF LATERAL VIBRATION OF THE WHEEL RELATIVE TO THE RAIL WITH VIDEO." Science and Transport Progress, no. 32 (April 25, 2010): 143–46. http://dx.doi.org/10.15802/stp2010/13350.

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In the article the videotape recordings of wheel motion on rail track, done during the dynamic tests of carriages, are analyzed. The treatment includes fixing of wheel rim positions in relation to a rail, construction of the spline function of displacement and its frequency description. The purpose of analysis is to determine the presence of harmonic components in the transversal wheel displacements.

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28

Charléty, Arthur, Mathieu Le Breton, Eric Larose, and Laurent Baillet. "2D Phase-Based RFID Localization for On-Site Landslide Monitoring." Remote Sensing 14, no. 15 (2022): 3577. http://dx.doi.org/10.3390/rs14153577.

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Passive radio-frequency identification (RFID) was recently used to monitor landslide displacement at a high spatio-temporal resolution but only measured 1D displacement. This study demonstrates the tracking of 2D displacements, using an array of antennas connected to an RFID interrogator. Ten tags were deployed on a landslide for 12 months and 2D relative localization was performed using a phase-of-arrival approach. A period of landslide activity was monitored through RFID and displacements were confirmed by reference measurements. The tags showed displacements of up to 1.2 m over the monitore

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29

Vokáč, Miroslav, Lukáš Balík, and Petr Bouška. "Monitoring of Historical Structure by IoT Technology with Use of ESP32 Development Board." Key Engineering Materials 868 (October 2020): 180–88. http://dx.doi.org/10.4028/www.scientific.net/kem.868.180.

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Internet of Thing technology (IoT) is currently developed and IoT commercial networks are being operated and developed in the Czech Republic, as for example LoRa or SigFox. In order to monitor structures or environments (temperature or relative air humidity etc.) with use of these technologies, very cheap hardware can be used, as is the micro controller ESP32 (or its precursor ESP8266). More substantial part of costs represents programming and adjustment for the actual measurement. This article is containing pilot verification of the measuring system based on the above technology during the mo

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Hariandja, Binsar Halomoan. "Finite Element Analysis of Nonlinear Contact Problems with Mixed Eulerian-Lagrangian Description." PRESUNIVE CIVIL ENGINEERING JOURNAL 1, no. 2 (2023): 37. http://dx.doi.org/10.33021/pcej.v1i2.4417.

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<p class="Abstract">This study deals with analysis of structures using mixed Eulerian-Lagrangian description. Apart from generally used Lagrangian description which uses initial configuration as reference, the newly proposed uses one of actual configuration as reference. Therefore, the total displacement is decomposed into two portions, i.e., the portion covering displacement from initial into referential configuration called Eulerian displacement, and the portion covering displacement from referential configuration into current configuration called Lagrangian displacement. The new techn

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Wu, Jintao, Lei Zhang, Yingxian Liu, Kuiqian Ma, and Xianbo Luo. "Effect of Displacement Pressure Gradient on Oil–Water Relative Permeability: Experiment, Correction Method, and Numerical Simulation." Processes 12, no. 2 (2024): 330. http://dx.doi.org/10.3390/pr12020330.

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Relative permeability is a fundamental parameter affecting reservoir development performance analysis. During the development of oil and gas fields, the displacement pressure gradient changes with time and space. This paper studies the effect of displacement pressure gradient on relative permeability. The oil–water relative permeability curves of a Bohai Oilfield under different displacement pressure gradients are obtained through experimental analysis. Based on the experimental data, a correction model of the permeability curve is established by regression of the Willhite model parameters. Th

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Zhang, Li Zhen, Mao Yuan E, Shi Ming Wang, and Yong Cheng Liang. "Feasibility Analysis on Oscillating Buoy Wave Power Device for Ocean Buoy." Applied Mechanics and Materials 291-294 (February 2013): 606–9. http://dx.doi.org/10.4028/www.scientific.net/amm.291-294.606.

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When the oscillating buoy wave power device installed on the ocean buoy, the floater and the ocean buoy move up and down under the action of the waves. Therefore, whether there is a vertical relative displacement between the floater and the ocean buoy becomes a crucial problem of the wave power generation. Based on the wave theory, taking the vertical cylinder floater for example, introduced the wave force and the moving displacement of the floater，the relative displacement between the floater and three different sizes of ocean buoys under four different oceanic conditions was analyzed by MATL

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33

Born, Sabine. "Saccadic Suppression of Displacement Does Not Reflect a Saccade-Specific Bias to Assume Stability." Vision 3, no. 4 (2019): 49. http://dx.doi.org/10.3390/vision3040049.

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Across saccades, small displacements of a visual target are harder to detect and their directions more difficult to discriminate than during steady fixation. Prominent theories of this effect, known as saccadic suppression of displacement, propose that it is due to a bias to assume object stability across saccades. Recent studies comparing the saccadic effect to masking effects suggest that suppression of displacement is not saccade-specific. Further evidence for this account is presented from two experiments where participants judged the size of displacements on a continuous scale in saccade

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Skrzyniarz, Michal, Lukasz Nowakowski, Edward Miko, and Krzysztof Borkowski. "Influence of Relative Displacement on Surface Roughness in Longitudinal Turning of X37CrMoV5-1 Steel." Materials 14, no. 5 (2021): 1317. http://dx.doi.org/10.3390/ma14051317.

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The shaping process of surface texture is complicated and depends on many factors and phenomena accompanying them. This article presents the author’s test stand for the measurement of relative displacements in a tool–workpiece system during longitudinal turning. The aim of this study was to determine the influence of edge radius on the relative displacement between the tool and workpiece. The cutting process was carried out with inserts with different edge radii for X37CrMoV5-1 steel. As a result of the research, vibration charts of the tool–workpiece system were obtained. In the range of feed

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Ma, Yong-Qian, and Kok-Keng Ang. "Solid Shell Element Based on Relative Displacement Concept." Journal of Engineering Mechanics 134, no. 11 (2008): 952–60. http://dx.doi.org/10.1061/(asce)0733-9399(2008)134:11(952).

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36

Qian, Ma Yong, Ang Kok Keng, and D. McGuckin. "A Plate Element Based on Relative Displacement Concept." International Journal for Computational Methods in Engineering Science and Mechanics 6, no. 3 (2005): 153–59. http://dx.doi.org/10.1080/15502280590923630.

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37

Young-Wha Kim. "Predicate Displacement and the Derivation of Relative Clauses." Korean Journal of Linguistics 37, no. 4 (2012): 807–24. http://dx.doi.org/10.18855/lisoko.2012.37.4.002.

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38

Esnard, Ann-Margaret, Alka Sapat, and Diana Mitsova. "An index of relative displacement risk to hurricanes." Natural Hazards 59, no. 2 (2011): 833–59. http://dx.doi.org/10.1007/s11069-011-9799-3.

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39

Morales, Cesar A. "Relative Transmissibility to Control Isolator Displacement Under Earthquakes." International Review of Civil Engineering (IRECE) 14, no. 4 (2023): 348. http://dx.doi.org/10.15866/irece.v14i4.22554.

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40

MATSUYA, Iwao, Ryuta KATAMURA, Maya SATO, et al. "A Relative-Story Displacement Sensor for Structural Health Monitoring Capable of Measuring the Local Inclination Angle and the Relative Displacement." TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 77, no. 777 (2011): 736–40. http://dx.doi.org/10.1299/kikaia.77.736.

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Csapo, R., J. Hodgson, R. Kinugasa, V. R. Edgerton, and S. Sinha. "Ankle morphology amplifies calcaneus movement relative to triceps surae muscle shortening." Journal of Applied Physiology 115, no. 4 (2013): 468–73. http://dx.doi.org/10.1152/japplphysiol.00395.2013.

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The present study investigated the mechanical role of the dorsoventral curvature of the Achilles tendon in the conversion of the shortening of the plantarflexor muscles into ankle joint rotation. Dynamic, sagittal-plane magnetic resonance spin-tagged images of the ankle joint were acquired in six healthy subjects during both passive and active plantarflexion movements driven by a magnetic resonance compatible servomotor-controlled foot-pedal device. Several points on these images were tracked to determine the 1) path and deformation of the Achilles tendon, 2) ankle's center of rotation, and 3)

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Abellán, A., M. Jaboyedoff, T. Oppikofer, and J. M. Vilaplana. "Detection of millimetric deformation using a terrestrial laser scanner: experiment and application to a rockfall event." Natural Hazards and Earth System Sciences 9, no. 2 (2009): 365–72. http://dx.doi.org/10.5194/nhess-9-365-2009.

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Abstract. Terrestrial laser scanning (TLS) is one of the most promising surveying techniques for rockslope characterization and monitoring. Landslide and rockfall movements can be detected by means of comparison of sequential scans. One of the most pressing challenges of natural hazards is combined temporal and spatial prediction of rockfall. An outdoor experiment was performed to ascertain whether the TLS instrumental error is small enough to enable detection of precursory displacements of millimetric magnitude. This consists of a known displacement of three objects relative to a stable surfa

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ACOSTA, R., W. HNAT, and L. R. SCHEKER. "Distal Radio-Ulnar Ligament Motion During Supination and Pronation." Journal of Hand Surgery 18, no. 4 (1993): 502–5. http://dx.doi.org/10.1016/0266-7681(93)90159-d.

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The dorsal and palmar distal radio-ulnar ligaments (DRUL) play an important role in the stability of the distal radio-ulnar joint (DRUJ). Various authorities, however, hold opposite opinions regarding DRUL motion during DRUJ pronation and supination, thus implying opposite techniques for reconstruction of the unstable DRUJ. With the hypothesis that relative displacement would increase in the dorsal DRUL during pronation and would increase in the palmar DRUL during supination, measurements were made of the relative DRUL displacement with a Hall-effect displacement transducer during DRUJ pronati

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Juusola, M., and A. S. French. "Transduction and adaptation in spider slit sense organ mechanoreceptors." Journal of Neurophysiology 74, no. 6 (1995): 2513–23. http://dx.doi.org/10.1152/jn.1995.74.6.2513.

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1. Mechanoreceptor neurons in spider (Cupiennlus salei) slit sense organ were examined by intracellular current- and voltageclarry recordings. Steps and pseudorandomly modulated displacement stimuli were delivered to the mechanosensitive cuticular slits. The resulting responses were used to determine the response dynamics and signal-to-noise ratio (SNR) of mechanoelectrical transduction. 2. Neurons were separated into two groups that, in terms of their afferent discharges, displayed different adaptations to displacement stimuli. Both responded at the onset of the step but then adapted fully, e

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Guo, Kexin, Zhirong Qiu, Wei Meng, Lihua Xie, and Rodney Teo. "Ultra-wideband based cooperative relative localization algorithm and experiments for multiple unmanned aerial vehicles in GPS denied environments." International Journal of Micro Air Vehicles 9, no. 3 (2017): 169–86. http://dx.doi.org/10.1177/1756829317695564.

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This article puts forward an indirect cooperative relative localization method to estimate the position of unmanned aerial vehicles (UAVs) relative to their neighbors based solely on distance and self-displacement measurements in GPS denied environments. Our method consists of two stages. Initially, assuming no knowledge about its own and neighbors’ states and limited by the environment or task constraints, each unmanned aerial vehicle (UAV) solves an active 2D relative localization problem to obtain an estimate of its initial position relative to a static hovering quadcopter (a.k.a. beacon),

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Wan, M. S. P., J. R. Standing, D. M. Potts, and J. B. Burland. "Measured short-term subsurface ground displacements from EPBM tunnelling in London Clay." Géotechnique 67, no. 9 (2017): 748–79. http://dx.doi.org/10.1680/jgeot.sip17.p.148.

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Subsurface ground displacements from the construction of the twin-bore Crossrail tunnels in London Clay by earth pressure balance machines (EPBMs) are presented and discussed, complementing a companion paper by the authors that focused on the surface response. Both papers report vertical and horizontal displacements, in this case measured using comprehensive arrays of instruments installed within boreholes in Hyde Park, London. The Crossrail tunnels are deeper than those cited in most UK case histories concerning tunnelling in stiff clay. Clear insights were gained into subsurface displacement

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Nonaka, T., T. Asaka, and K. Iwashita. "EVALUATION OF RELATIVE GEOMETRIC ACCURACY OF TERRASAR-X BY PIXEL MATCHING METHODOLOGY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B7 (June 22, 2016): 859–64. http://dx.doi.org/10.5194/isprs-archives-xli-b7-859-2016.

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Recently, high-resolution commercial SAR satellites with several meters of resolutions are widely utilized for various applications and disaster monitoring is one of the commonly applied areas. The information about the flooding situation and ground displacement was rapidly announced to the public after the Great East Japan Earthquake 2011. One of the studies reported the displacement in Tohoku region by the pixel matching methodology using both pre- and post- event TerraSAR-X data, and the validated accuracy was about 30 cm at the GEONET reference points. In order to discuss the spatial distr

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48

Nonaka, T., T. Asaka, and K. Iwashita. "EVALUATION OF RELATIVE GEOMETRIC ACCURACY OF TERRASAR-X BY PIXEL MATCHING METHODOLOGY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B7 (June 22, 2016): 859–64. http://dx.doi.org/10.5194/isprsarchives-xli-b7-859-2016.

Full text

Abstract:

Recently, high-resolution commercial SAR satellites with several meters of resolutions are widely utilized for various applications and disaster monitoring is one of the commonly applied areas. The information about the flooding situation and ground displacement was rapidly announced to the public after the Great East Japan Earthquake 2011. One of the studies reported the displacement in Tohoku region by the pixel matching methodology using both pre- and post- event TerraSAR-X data, and the validated accuracy was about 30 cm at the GEONET reference points. In order to discuss the spatial distr

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49

Yan, Jian, Xiao Bing Liang, Wei Gang Wang, and Jun Yao. "Influence of Formation Pressure Variation on Relative Permeability Characteristics of Oil and Water Phase." Advanced Materials Research 1010-1012 (August 2014): 1705–8. http://dx.doi.org/10.4028/www.scientific.net/amr.1010-1012.1705.

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At present, there are still some disputes on the influence of pressure on the relative permeability of oil and water phase in low permeable reservoirs. This text carried out the displacement experiments to study the influences of effective stress and displacement pressure on the relative permeability. The results indicate that: with the decreasing of displacement pressure, the relative permeability of oil and water and the displacement efficiency become poor; the lower the permeability is, the worse the effective permeability and displacement efficiency are; low permeable reservoirs have stron

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Kamali, Fatemeh, Furqan Hussain, and Yildiray Cinar. "An Experimental and Numerical Analysis of Water-Alternating-Gas and Simultaneous-Water-and-Gas Displacements for Carbon Dioxide Enhanced Oil Recovery and Storage." SPE Journal 22, no. 02 (2016): 521–38. http://dx.doi.org/10.2118/183633-pa.

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Summary This paper presents an experimental and numerical study that delineates the co-optimization of carbon dioxide (CO2) storage and enhanced oil recovery (EOR) in water-alternating-gas (WAG) and simultaneous-water-and-gas (SWAG) injection schemes. Various miscibility conditions and injection schemes are investigated. Experiments are conducted on a homogeneous, outcrop Bentheimer sandstone sample. A mixture of hexane (C6) and decane (C10) is used for the oil phase. Experiments are run at 70°C and three different pressures (1,300, 1,700, and 2,100 psi) to represent immiscible, near-miscible,

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