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Relevant bibliographies by topics / Rigid Surface

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Academic literature on the topic 'Rigid Surface'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Rigid Surface"

1

Konyukhov, Alexander, and Karl Schweizerhof. "On some aspects for contact with rigid surfaces: Surface-to-rigid surface and curves-to-rigid surface algorithms." Computer Methods in Applied Mechanics and Engineering 283 (January 2015): 74–105. http://dx.doi.org/10.1016/j.cma.2014.08.013.

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Gukov, Sergei, and Edward Witten. "Rigid Surface Operators." Advances in Theoretical and Mathematical Physics 14, no. 1 (2010): 87–178. http://dx.doi.org/10.4310/atmp.2010.v14.n1.a3.

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Miškinis, P., and G. Karlikauskas. "Rigid surface bag model." Nuclear Physics A 683, no. 1-4 (February 2001): 339–58. http://dx.doi.org/10.1016/s0375-9474(00)00442-5.

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Attenborough, Keith, Imran Bashir, and Shahram Taherzadeh. "Surface waves over rigid-porous and rough surfaces." Journal of the Acoustical Society of America 133, no. 5 (May 2013): 3351. http://dx.doi.org/10.1121/1.4805688.

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Chaky, J., K. Anderson, M. Moss, and L. Vaillancourt. "Surface Hydrophobicity and Surface Rigidity Induce Spore Germination in Colletotrichum graminicola." Phytopathology® 91, no. 6 (June 2001): 558–64. http://dx.doi.org/10.1094/phyto.2001.91.6.558.

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We investigated the relationship between physical characteristics of artificial surfaces, spore attachment, and spore germination in Colletotrichum graminicola. Surface hydrophobicity and surface rigidity were both signals for breaking dormancy and initiating spore germination, but spore attachment alone was not an important inducing signal. The presence of a carbon source overrode the necessity for a rigid, hydrophobic substrate for spore germination. Spore attachment was typically stronger to more hydrophobic surfaces, but certain hydrophilic surfaces also proved to be good substrates for spore attachment. In contrast to spore germination, appressorial induction was more dependent on attachment to a rigid substrate than it was on surface hydrophobicity. Appressoria were induced efficiently on hydrophilic surfaces, as long as there was significant conidial attachment to those surfaces.

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Markeev, A. P. "The dynamics of a rigid body colliding with a rigid surface." Regular and Chaotic Dynamics 13, no. 2 (April 2008): 96–129. http://dx.doi.org/10.1134/s1560354708020044.

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SANO, Akihito, Tasuku NAKAYAMA, Yoshihiro TANAKA, and Hideo FUJIMOTO. "2P1-L03 Soft-feel Rigid-surface." Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2009 (2009): _2P1—L03_1—_2P1—L03_2. http://dx.doi.org/10.1299/jsmermd.2009._2p1-l03_1.

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Allary, Jean-Charles, Veronica Mapstone, Jean-Pierre Guillon, and Michel Guillon. "Rigid gas permeable lens surface evaluation." Journal of The British Contact Lens Association 12 (January 1989): 18–19. http://dx.doi.org/10.1016/s0141-7037(89)80081-3.

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Hansson, Erik, and Anders Klarbring. "Rigid contact modelled by CAD surface." Engineering Computations 7, no. 4 (April 1990): 344–48. http://dx.doi.org/10.1108/eb023821.

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Liu, Ya-Shu, Han-Bing Yan, and Ralph R. Martin. "As-Rigid-As-Possible Surface Morphing." Journal of Computer Science and Technology 26, no. 3 (May 2011): 548–57. http://dx.doi.org/10.1007/s11390-011-1154-3.

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Dissertations / Theses on the topic "Rigid Surface"

1

Tooley, Scott. "The effects of surface tension on free surface flows intersecting rigid walls." Thesis, University of East Anglia, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251709.

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Zhao, Xujun. "Surface loading and rigid indentation of an elastic layer with surface energy effects." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/12598.

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With the growing interest in nanotechnology, it is becoming important to understand the nanoscale mechanics to achieve successful design and fabrication of nanoscale devices. However, the classical continuum theory is not directly applicable to the analysis of nanoscale domains due to size-dependent behavior of nanostructures. Since the surface-to-volume ratio of a nanoscale domain is relatively high compared to that of a macro-scale domain, the energy associated with atoms at or near a free surface is different from that of atoms in the bulk. The effect of surface free energy therefore needs to be considered. Ultra-thin film/substrate systems, which are encountered in applications involving nanocoatings, nanotribology and material characterization based on nano-indentation, may be analyzed using modified continuum elasticity theory incorporating surface energy effects. This thesis presents a set of analytical solutions for elastic field of a layer of nanoscale thickness bonded to a rigid base under surface loading and indentation by a rigid body. Surface energy effects are accounted for by using Gurtin-Murdoch elasticity theory. Fourier and Hankel integral transforms are used to solve the two- and three- dimensional boundary-value problems involving non-classical boundary conditions associated with the generalized Young-Laplace equation. In the case of a two-dimensional semi-infinite medium, the solutions can be expressed in closed form. The elastic field is found to depend on the layer thickness and surface elastic constants, and the influence of surface energy is shown to be more significant under a horizontal load than under a vertical load. A characteristic length scale related to the surface material properties can be identified for the present class of problems. The solution for the indentation problem is considered for flat, conical and spherical rigid indenters. The mixed boundary-value problem corresponding to a rigid indenter is formulated in terms of a dual integral equation system that is solved by using numerical quadrature. Selected numerical results are presented to show the influence of the indenter shape, surface properties and size-dependency of response.

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Bauer, Sebastian [Verfasser], and Joachim [Akademischer Betreuer] Hornegger. "Rigid and Non-Rigid Surface Registration for Range Imaging Applications in Medicine / Sebastian Bauer. Gutachter: Joachim Hornegger." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2014. http://d-nb.info/107583452X/34.

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Chhatkuli, Ajad. "Local analytic and global convex methods for the 3D reconstruction of isometric deformable surfaces." Thesis, Clermont-Ferrand 1, 2016. http://www.theses.fr/2016CLF1MM27/document.

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Cette thèse contribue au problème de la reconstruction 3D pour les surfaces déformables avec une seule caméra. Afin de modéliser la déformation de la surface, nous considérons l’isométrie puisque de nombreuses déformations d’objets réels sont quasi-isométriques. L’isométrie implique que, lors de sa déformation, la surface ne peut pas être étirée ou compressée. Nous étudions deux problèmes. Le premier est le problème basé sur une modèle 3D de référence et une seule image. L’état de l’art propose une méthode locale et analytique de calcul direct de profondeur sous l’hypothèse d’isométrie. Dans cette méthode, la solution pour le gradient de la profondeur n’est pas utilisée. Nous prouvons que cette méthode s’avère instable lorsque la géométrie de la caméra tend à être affine. Nous fournissons des méthodes alternatives basées sur les solutions analytiques locales des quantités de premier ordre, telles que les gradients de profondeur ou les normales de la surface. Nos méthodes sont stables dans toutes les géométries de projection. Dans le deuxième type de problème de reconstruction sans modèle 3D de référence, on obtient les formes de l’objet à partir d’un ensemble d’images où il apparaît déformé. Nous fournissons des solutions locales et globales basées sur le modéle de la caméra perspective. Dans la méthode locale ou par point, nous résolvons pour la normale de la surface en chaque point en supposant que la surface est infinitésimalement plane. Nous calculons ensuite la surface par intégration. Dans la méthode globale, nous trouvons une relaxation convexe du problème. Celle-ci est basée sur la relaxation de l’isométrie en contrainte d’inextensibilité et sur la maximisation de la profondeur en chaque point de la surface. Cette solution combine toutes les contraintes en un seul programme d’optimisation convexe qui calcule la profondeur et utilise une représentation éparse de la surface. Nous détaillons les expériences approfondies qui ont été réalisées pour démontrer l’efficacité de chacune des méthodes. Les expériences montrent que notre solution libre de modèle de référence local fonctionne mieux que la plupart des méthodes précédentes. Notre méthode local avec un modèle 3D de référence et notre méthode globale sans modèle 3D apportent de meilleurs résultats que les méthodes de l’état de l’art en étant robuste au bruit de la correspondance. En particulier, nous sommes en mesure de reconstruire des déformations complexes, non-lisses et d’articulations avec la seconde méthode; alors qu’avec la première, nous pouvons reconstruire avec précision de déformations larges à partir d’images prises avec des très longues focales
This thesis contributes to the problem of 3D reconstruction for deformable surfaces using a single camera. In order to model surface deformation, we use the isometric prior because many real object deformations are near-isometric. Isometry implies that the surface cannot stretch or compress. We tackle two different problems. The first is called Shape-from-Template where the object’s deformed shape is computed from a single image and a texture-mapped 3D template of the object surface. Previous methods propose a differential model of the problem and compute the local analytic solutions. In the methods the solution related to the depth-gradient is discarded and only the depth solution is used. We demonstrate that the depth solution lacks stability as the projection geometry tends to affine. We provide alternative methods based on the local analytic solutions of first-order quantities, such as the depth-gradient or surface normals. Our methods are stable in all projection geometries. The second type of problem, called Non-Rigid Shape-from-Motion is the more general templatefree reconstruction scenario. In this case one obtains the object’s shapes from a set of images where it appears deformed. We contribute to this problem for both local and global solutions using the perspective camera. In the local or point-wise method, we solve for the surface normal at each point assuming infinitesimal planarity of the surface. We then compute the surface by integration. In the global method we find a convex relaxation of the problem. This is based on relaxing isometry to inextensibility and maximizing the surface’s average depth. This solution combines all constraints into a single convex optimization program to compute depth and works for a sparse point representation of the surface. We detail the extensive experiments that were used to demonstrate the effectiveness of each of the proposed methods. The experiments show that our local template-free solution performs better than most of the previous methods. Our local template-based method and our global template-free method performs better than the state-of-the-art methods with robustness to correspondence noise. In particular, we are able to reconstruct difficult, non-smooth and articulating deformations with the latter; while with the former we can accurately reconstruct large deformations with images taken at very long focal lengths

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Darbandi, Hossein B. "New surface descriptors for matching and recognition of three-dimensional rigid objects." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/17456.

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In this work we propose new surface descriptors for matching and recognition of three-dimensional rigid objects by encoding the fluctuation of the surface and the variation of its normal around an oriented surface point. The surface of the object is encoded into three features vectors as the surface signatures on each point of the surface, and then the collection of signatures is used to match and recognize the object. The signatures encode the curvature, symmetry, and convexity of the surface around an oriented point. The new descriptors are robust to noise, sampling density, scale, rotation, clutter, and occlusion. In this work we use Computer Aided Design (CAD) to create models and test objects represented by triangular meshes.

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Innmann, Matthias [Verfasser]. "Practical 3D Reconstruction of Non-Rigid Objects and Surface Reflectance / Matthias Innmann." München : Verlag Dr. Hut, 2021. http://d-nb.info/1232847690/34.

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Lund, Hugh Michael. "The impact and rupture of a water-filled balloon on a rigid surface." Thesis, University of Cambridge, 2014. https://www.repository.cam.ac.uk/handle/1810/245343.

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The dropping of a water-ﬁlled latex balloon onto a ﬂat, rigid surface is an experiment that is known and has been performed by many, but on which there is no existing published work. High-speed images taken of the process revealed a range of phenomena, many of which had not been previously observed. After release, a water-ﬁlled balloon accelerates down and impacts with the tank ﬂoor. Upon impact, the balloon deforms through the propagation of waves up the balloon from the impact point. If the balloon does not rupture during this deformation, it then bounces up oﬀ the surface, the whole process similar to that when a water droplet bounces on a hydrophobic surface. Often, however, the balloon ruptures. This occurs through the propagation of one or more cracks through the balloon, leading to the rapid retraction of the membrane over the water’s surface, and consequent ejection of a ﬁne spray of water droplets behind it. If there are any waves on the balloon at the moment of rupture, a larger-scale growth of the interfacial amplitude occurs, of the same wavelength as the preburst waves. Eventually, gravity dominates, as the water slumps down and spreads over the ﬂat surface. In this thesis, the process described above is examined in detail, both experimentally and theoretically. To gain some insight into the behaviour of the latex balloons, their static and quasi-static behaviour is examined. A experimental method better than simply dropping the balloons was derived, permitting the accurate quantitative measurement of the process. In this new method, the balloons were held stationary, forced at a set frequency, then ruptured with a pin. The pre-burst waves are then shown to be accurately modelled by linear theory, with tension in the membrane acting much like a ﬂuid surface tension. The behaviour of the rubber in retraction from large initial stretches is shown to be disperse, in contrast with that observed for retractions from small initial stretches, due to both non-linearity in the rubber and drag from the water on the strip. The spray ejected behind the rubber is explained as consequence of the inherent instability of the Gaussian velocity ﬁeld in the wake. Finally, the late-time growth of the interfacial amplitude is examined, and argued to be closely-related to the Richtmyer-Meshkov instability. A model is then derived for the case of a balloon oscillated and burst with water both inside and outside, and is shown to be in approximate agreement with experiments.

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Dalrymple, Amy Janel. "The Effect of Adhesion on the Contact of an Elastica with a Rigid Surface." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/36111.

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The understanding of topics such as friction, wear, lubrication, and adhesive bonds is dependent on the ability to measure surface and interfacial energies. The surface energies of liquids may be measured accurately using a variety of techniques; however, surface energies of solids are much more difficult to accurately measure. In an attempt to develop a method that can be used to measure surface and interfacial energies of solids, this thesis proposes the use of a elastica. The elastica acts as an extremely flexible beam and provides a structure that will permit measurable deformation of the solid by relatively small surface attractions. The ends of the elastica are lifted, bent, and clamped vertically at an equal height and specified distance apart. They are then moved downward, allowing the strip to make contact with a flat, rigid, horizontal surface. Two adhesion models are investigated. First, a JKR-type analysis, which examines the effect of adhesion forces that exist within the area of contact between the elastica and the rigid surface, is considered. Various values for the work of adhesion are examined. A DMT-type analysis, which assumes that the adhesion forces act in the region just outside of the contact area, is also considered. Results are obtained for linear and constant forces. Various values for the maximum DMT force and the vertical separation between the elastica and the rigid substrate at which the adhesion forces terminate are examined. Results from the two types of analyses are compared.
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Wannasingha, Usa. "Nested rigid-lid and free-surface numerical primitive equation ocean models for the Faroese Channels." Thesis, University of Exeter, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324026.

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Maji, S., P. R. Hanmaiahgari, R. Balachandar, Jaan H. Pu, A. M. Ricardo, and R. M. L. Ferreira. "A review on hydrodynamics of free surface flows in emergent vegetated channels." MDPI, 2020. http://hdl.handle.net/10454/17820.

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Yes
This review paper addresses the structure of the mean flow and key turbulence quantities in free-surface flows with emergent vegetation. Emergent vegetation in open channel flow affects turbulence, flow patterns, flow resistance, sediment transport, and morphological changes. The last 15 years have witnessed significant advances in field, laboratory, and numerical investigations of turbulent flows within reaches of different types of emergent vegetation, such as rigid stems, flexible stems, with foliage or without foliage, and combinations of these. The influence of stem diameter, volume fraction, frontal area of stems, staggered and non-staggered arrangements of stems, and arrangement of stems in patches on mean flow and turbulence has been quantified in different research contexts using different instrumentation and numerical strategies. In this paper, a summary of key findings on emergent vegetation flows is offered, with particular emphasis on: (1) vertical structure of flow field, (2) velocity distribution, 2nd order moments, and distribution of turbulent kinetic energy (TKE) in horizontal plane, (3) horizontal structures which includes wake and shear flows and, (4) drag effect of emergent vegetation on the flow. It can be concluded that the drag coefficient of an emergent vegetation patch is proportional to the solid volume fraction and average drag of an individual vegetation stem is a linear function of the stem Reynolds number. The distribution of TKE in a horizontal plane demonstrates that the production of TKE is mostly associated with vortex shedding from individual stems. Production and dissipation of TKE are not in equilibrium, resulting in strong fluxes of TKE directed outward the near wake of each stem. In addition to Kelvin–Helmholtz and von Kármán vortices, the ejections and sweeps have profound influence on sediment dynamics in the emergent vegetated flows.

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Books on the topic "Rigid Surface"

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Almgren, Martir. Scale model simulation of sound propagation considering sound speed gradients and acoustic boundary layers at a rigid surface. Göteberg: Bibliotekets Reproservice, 1986.

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Wade, Adams W., Eby Ronald K. 1929-, McLemore Donald E, and Materials Research Society, eds. The Materials science and engineering of rigid-rod polymers: Symposium held November 28-December 2, 1988, Boston, Massachusetts, U.S.A. Pittsburgh, Pa: Materials Research Society, 1989.

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Adams, W. Wade, and Ronald K. Eby. The Materials Science and Engineering of Rigid-Rod Polymers: Symposium Held November 28-December 2, 1988, Boston, Massachusetts, U.S.A. (Materials Research Society Symposium Proceedings). Materials Research Society, 1990.

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Zeitlin, Vladimir. Instabilities in Cylindrical Geometry: Vortices and Laboratory Flows. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198804338.003.0011.

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Vortex solutions in cyclo-geostrophic equilibrium are described and their geostrophic and ageostrophic barotropic and baroclinic instabilities are studied along the lines of Chapter 10. Special attention is paid to centrifugal instability which, as the inertial instability of jets, is due to modes trapped in the anticyclonic shear in the vortex, and has asymmetric counterparts. Saturation of this instability is shown to exhibit some specific patterns. Instabilities of intense hurricane-like vortices are analysed and shown to be sensitive to fine details of the vortex profile. Nonlinear saturation of such instabilities exhibits typical secondary meso-vortex structures, and leads to intensification of the vortex. Special attention is paid to instabilities in laboratory flows in rotating cylindrical channels. Classification of these instabilities is given, and their nature, in terms of resonances between different wave modes, is established. Rigid-lid and free-surface configuration with topography are considered and compared with experiments.

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Lattman, Eaton E., Thomas D. Grant, and Edward H. Snell. Shape Reconstructions from Small Angle Scattering Data. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199670871.003.0004.

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This chapter discusses recovering shape or structural information from SAXS data. Key to any such process is the ability to generate a calculated intensity from a model, and to compare this curve with the experimental one. Models for the particle scattering density can be approximated as pure homogenenous geometric shapes. More complex particle surfaces can be represented by spherical harmonics or by a set of close-packed beads. Sometimes structural information is known for components of a particle. Rigid body modeling attempts to rotate and translate structures relative to one another, such that the resulting scattering profile calculated from the model agrees with the experimental SAXS data. More advanced hybrid modelling procedures aim to incorporate as much structural information as is available, including modelling protein dynamics. Solutions may not always contain a homogeneous set of particles. A common case is the presence of two or more conformations of a single particle or a mixture of oligomeric species. The method of singular value decomposition can extract scattering for conformationally distinct species.

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Book chapters on the topic "Rigid Surface"

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Klaudiny, Martin, Chris Budd, and Adrian Hilton. "Towards Optimal Non-rigid Surface Tracking." In Computer Vision – ECCV 2012, 743–56. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33765-9_53.

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Popov, Valentin L. "Adhesion of a Thin Soft Matter Layer: The Role of Surface Tension." In Springer Tracts in Mechanical Engineering, 461–72. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60124-9_19.

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AbstractWe consider an adhesive contact between a thin soft layer on a rigid substrate and a rigid cylindrical indenter (“line contact”) taking the surface tension of the layer into account. First, it is shown that the boundary condition for the surface outside the contact area is given by the constant contact angle—as in the case of fluids in contact with solid surfaces. In the approximation of thin layer and under usual assumptions of small indentation and small inclination angles of the surface, the problem is solved analytically. In the case of a non-adhesive contact, surface tension makes the contact stiffer (at the given indentation depth, the contact half-width becomes smaller and the indentation force larger). In the case of adhesive contact, the influence of surface tension seems to be more complicated: For a flat-ended punch, it increases with increasing the surface tension, while for a wedge, it decreases. Thus, the influence of the surface tension on the adhesion force seems to be dependent on the particular geometry of the contacting bodies.

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Huang, Hu. "Linear Gravity Waves over Rigid, Porous Bottoms." In Dynamics of Surface Waves in Coastal Waters, 79–93. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-88831-4_5.

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Habermann, Marc, Weipeng Xu, Helge Rhodin, Michael Zollhöfer, Gerard Pons-Moll, and Christian Theobalt. "NRST: Non-rigid Surface Tracking from Monocular Video." In Lecture Notes in Computer Science, 335–48. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-12939-2_23.

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Mustafa, Armin, Hansung Kim, and Adrian Hilton. "4D Match Trees for Non-rigid Surface Alignment." In Computer Vision – ECCV 2016, 213–29. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-46448-0_13.

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Iizuka, Kojiro, Takahiro Nakamura, and Yoshitaka Ishii. "Study on Airless Variable Rigid Wheel to Travel Rigid and Loose Surface for UGV." In Lecture Notes in Mechanical Engineering, 185–98. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8323-6_16.

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Kandler, O. "Comparative Chemistry of the Rigid Cell Wall Component and its Phylogenetic Implications." In Crystalline Bacterial Cell Surface Layers, 1–6. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-73537-0_1.

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Golyanik, Vladislav. "Monocular Non-Rigid Surface Reconstruction with Learned Deformation Model." In Robust Methods for Dense Monocular Non-Rigid 3D Reconstruction and Alignment of Point Clouds, 165–80. Wiesbaden: Springer Fachmedien Wiesbaden, 2020. http://dx.doi.org/10.1007/978-3-658-30567-3_7.

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Frémond, Michel. "Damage of a Rod Glued on a Rigid Surface." In Virtual Work and Shape Change in Solid Mechanics, 109–20. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-40682-4_21.

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Frémond, Michel. "Damage of a Beam Glued on a Rigid Surface." In Virtual Work and Shape Change in Solid Mechanics, 121–36. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-40682-4_22.

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Conference papers on the topic "Rigid Surface"

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Fujiwara, Kent, Ko Nishino, Jun Takamatsu, Bo Zheng, and Katsushi Ikeuchi. "Locally rigid globally non-rigid surface registration." In 2011 IEEE International Conference on Computer Vision (ICCV). IEEE, 2011. http://dx.doi.org/10.1109/iccv.2011.6126411.

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Rosenberg, Louis B. "Design of a virtual rigid surface." In Conference companion. New York, New York, USA: ACM Press, 1994. http://dx.doi.org/10.1145/259963.260473.

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Rouhani, Mohammad, Edmond Boyer, and Angel D. Sappa. "Non-rigid Registration Meets Surface Reconstruction." In 2014 2nd International Conference on 3D Vision (3DV). IEEE, 2014. http://dx.doi.org/10.1109/3dv.2014.80.

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Ziegler, Andrew, and Serge Belongie. "Non-rigid surface detection for gestural interaction with applicable surfaces." In 2012 IEEE Workshop on Applications of Computer Vision (WACV). IEEE, 2012. http://dx.doi.org/10.1109/wacv.2012.6163029.

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Sriwijaya, R. R. A., K. Takahashi, and K. Jatmiko. "Analytical solution of adhesion contact for a rigid sinusoidal surface on a semi-infinite elastic body." In CONTACT/SURFACE 2007. Southampton, UK: WIT Press, 2007. http://dx.doi.org/10.2495/secm070141.

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Watanabe, Yoshihiro, Takashi Nakashima, Takashi Komuro, and Masatoshi Ishikawa. "Estimation of Non-rigid Surface Deformation Using Developable Surface Model." In 2010 20th International Conference on Pattern Recognition (ICPR). IEEE, 2010. http://dx.doi.org/10.1109/icpr.2010.57.

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Liu, Sicong, Yan Chen, and Guoxing Lu. "The Rigid Origami Patterns for Flat Surface." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-12947.

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Because of the internal mobility, rigid origami structures have great potential in engineering applications. In this research, a kinematic model of the rigid origami pattern is proposed based on the assembly of spherical 4R linkages. To ensure the rigid origami pattern with mobility one, the kinematic and geometric compatibility conditions of the kinematic model are derived. Four types of flat rigid origami patterns are obtained, including three existing types as well as a novel one called the supplementary type. To testify and display the mobile processes of the patterns, their simulation models are built accordingly.

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Wu, Yi, Yoshihisa Ijiri, and Ming-Hsuan Yang. "Multiple Non-rigid Surface Detection and Registration." In 2013 IEEE International Conference on Computer Vision (ICCV). IEEE, 2013. http://dx.doi.org/10.1109/iccv.2013.249.

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Li, Guangxu, Hyoungseop Kim, Joo Kooi Tan, and Seiji Ishikawa. "Surface orientation driven 3D rigid registration method." In 2012 IEEE International Conference on Systems, Man and Cybernetics - SMC. IEEE, 2012. http://dx.doi.org/10.1109/icsmc.2012.6377933.

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Kim Siang Ang. "Non-rigid surface matching to unmask scoliotic deformity in surface topography." In 2009 6th International Symposium on Image and Signal Processing and Analysis. IEEE, 2009. http://dx.doi.org/10.1109/ispa.2009.5297749.

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Reports on the topic "Rigid Surface"

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Rosenberg, Louis B. Perceptual Design of a Virtual Rigid Surface Contact. Fort Belvoir, VA: Defense Technical Information Center, April 1993. http://dx.doi.org/10.21236/ada296190.

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Heymsfield, Ernie, and Jeb Tingle. State of the practice in pavement structural design/analysis codes relevant to airfield pavement design. Engineer Research and Development Center (U.S.), May 2021. http://dx.doi.org/10.21079/11681/40542.

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An airfield pavement structure is designed to support aircraft live loads for a specified pavement design life. Computer codes are available to assist the engineer in designing an airfield pavement structure. Pavement structural design is generally a function of five criteria: the pavement structural configuration, materials, the applied loading, ambient conditions, and how pavement failure is defined. The two typical types of pavement structures, rigid and flexible, provide load support in fundamentally different ways and develop different stress distributions at the pavement – base interface. Airfield pavement structural design is unique due to the large concentrated dynamic loads that a pavement structure endures to support aircraft movements. Aircraft live loads that accompany aircraft movements are characterized in terms of the load magnitude, load area (tire-pavement contact surface), aircraft speed, movement frequency, landing gear configuration, and wheel coverage. The typical methods used for pavement structural design can be categorized into three approaches: empirical methods, analytical (closed-form) solutions, and numerical (finite element analysis) approaches. This article examines computational approaches used for airfield pavement structural design to summarize the state-of-the-practice and to identify opportunities for future advancements. United States and non-U.S. airfield pavement structural codes are reviewed in this article considering their computational methodology and intrinsic qualities.

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Bowles, David, Michael Williams, Hope Dodd, Lloyd Morrison, Janice Hinsey, Tyler Cribbs, Gareth Rowell, Michael DeBacker, Jennifer Haack-Gaynor, and Jeffrey Williams. Protocol for monitoring aquatic invertebrates of small streams in the Heartland Inventory & Monitoring Network: Version 2.1. National Park Service, April 2021. http://dx.doi.org/10.36967/nrr-2284622.

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The Heartland Inventory and Monitoring Network (HTLN) is a component of the National Park Service’s (NPS) strategy to improve park management through greater reliance on scientific information. The purposes of this program are to design and implement long-term ecological monitoring and provide information for park managers to evaluate the integrity of park ecosystems and better understand ecosystem processes. Concerns over declining surface water quality have led to the development of various monitoring approaches to assess stream water quality. Freshwater streams in network parks are threatened by numerous stressors, most of which originate outside park boundaries. Stream condition and ecosystem health are dependent on processes occurring in the entire watershed as well as riparian and floodplain areas; therefore, they cannot be manipulated independently of this interrelationship. Land use activities—such as timber management, landfills, grazing, confined animal feeding operations, urbanization, stream channelization, removal of riparian vegetation and gravel, and mineral and metals mining—threaten stream quality. Accordingly, the framework for this aquatic monitoring is directed towards maintaining the ecological integrity of the streams in those parks. Invertebrates are an important tool for understanding and detecting changes in ecosystem integrity, and they can be used to reflect cumulative impacts that cannot otherwise be detected through traditional water quality monitoring. The broad diversity of invertebrate species occurring in aquatic systems similarly demonstrates a broad range of responses to different environmental stressors. Benthic invertebrates are sensitive to the wide variety of impacts that influence Ozark streams. Benthic invertebrate community structure can be quantified to reflect stream integrity in several ways, including the absence of pollution sensitive taxa, dominance by a particular taxon combined with low overall taxa richness, or appreciable shifts in community composition relative to reference condition. Furthermore, changes in the diversity and community structure of benthic invertebrates are relatively simple to communicate to resource managers and the public. To assess the natural and anthropo-genic processes influencing invertebrate communities, this protocol has been designed to incorporate the spatial relationship of benthic invertebrates with their local habitat including substrate size and embeddedness, and water quality parameters (temperature, dissolved oxygen, pH, specific conductance, and turbidity). Rigid quality control and quality assurance are used to ensure maximum data integrity. Detailed standard operating procedures (SOPs) and supporting information are associated with this protocol.

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