Relevant bibliographies by topics / Geometric surface area

Contents

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

Academic literature on the topic 'Geometric surface area'

Author: Grafiati
Published: 4 June 2021
Last updated: 31 January 2023

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Journal articles on the topic "Geometric surface area"

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Xie, Xuan, and Rudolf Holze. "Electrode Kinetic Data: Geometric vs. Real Surface Area." Batteries 8, no. 10 (2022): 146. http://dx.doi.org/10.3390/batteries8100146.

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Kinetic data reporting the rate of electron transfer across an electrified interface are of fundamental as well as practical importance. They report the electric current caused by coupling the flow of electrons inside the electronically conducting electrode and the flow of ions in the adjacent ionically conducting phase. At equilibrium or rest, potential currents in both directions at the established dynamic equilibrium have the same absolute value: the net current is zero. This current describes the electrocatalytic activity of an electrode and is called the exchange current; with respect to
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Werner, Elisabeth. "A general geometric construction for affine surface area." Studia Mathematica 132, no. 3 (1999): 227–38. http://dx.doi.org/10.4064/sm-132-3-227-238.

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Petersen, DR, A. Schro̸der-Pedersen, J. Kjo̸ller, and B. Larsen. "A Comparison of Calculated Geometric Surface Area and Measured BET Surface Area for a Metal Powder." Journal of Testing and Evaluation 25, no. 4 (1997): 365. http://dx.doi.org/10.1520/jte11871j.

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MORET, M. A., V. de SENNA, M. C. SANTANA, and G. F. ZEBENDE. "GEOMETRIC STRUCTURAL ASPECTS OF PROTEINS AND NEWCOMB–BENFORD LAW." International Journal of Modern Physics C 20, no. 12 (2009): 1981–88. http://dx.doi.org/10.1142/s0129183109014874.

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The major factor that drives a protein toward collapse and folding is the hydrophobic effect. At the folding process a hydrophobic core is shielded by the solvent-accessible surface area of the protein. We study the behavior of the numbers in 5526 protein structures present in the Brookhaven Protein Data Bank. The first digit of mass, volume, average radius and solvent-accessible surface area are measured independently and we observe that most of these geometric observables obey the Newcomb–Benford law. That is volume, mass and average radius obey the Newcomb–Benford law. Nevertheless, the dig
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Alwan, Ali K., and Wisam K. Hamdan. "Geometric Modeling of Compound NURBS Surfaces." Engineering and Technology Journal 38, no. 2A (2020): 277–87. http://dx.doi.org/10.30684/etj.v38i2a.300.

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The design of sculptured surfaces occupies an essential area in the field of modern industrial, aerospace, and medical applications. The challenge is to design products that have complex features efficiently with great flexibility of editing in certain regions without affecting other regions, which the designer has no intent to modify. In this paper, we propose a surface design method based on compound NURBS surface to model automotive parts with 400 control points. First, a Non-Uniform B-Spline basis function is derived with a cubic degree and 20 control points. This method is utilized to des
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Zhang, Jingxuan. "Adiabatic theory for the area-constrained Willmore flow." Journal of Mathematical Physics 63, no. 4 (2022): 041503. http://dx.doi.org/10.1063/5.0076701.

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In this paper, we develop an adiabatic theory for the evolution of large closed surfaces under the area-constrained Willmore (ACW) flow in a three-dimensional asymptotically Schwarzschild manifold. We explicitly construct a map, defined on a certain four-dimensional manifold of barycenters, which characterizes key static and dynamical properties of the ACW flow. In particular, using this map, we find an explicit four-dimensional effective dynamics of barycenters, which serves as a uniform asymptotic approximation for the (infinite-dimensional) ACW flow, so long as the initial surface satisfies
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Sun, J. "Geometric models for calculating cell biovolume and surface area for phytoplankton." Journal of Plankton Research 25, no. 11 (2003): 1331–46. http://dx.doi.org/10.1093/plankt/fbg096.

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Cao, Leo N. Y., Sheng-Chieh Chen, Heinz Fissan, Christof Asbach, and David Y. H. Pui. "Development of a geometric surface area monitor (GSAM) for aerosol nanoparticles." Journal of Aerosol Science 114 (December 2017): 118–29. http://dx.doi.org/10.1016/j.jaerosci.2017.09.013.

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Li, Xiaobing, Fujun Niu, Jinzhan Su, and Liejin Guo. "Photoelectrochemical Performance Dependence on Geometric Surface Area of Branched ZnO Nanowires." ChemElectroChem 5, no. 23 (2018): 3717–22. http://dx.doi.org/10.1002/celc.201801054.

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Jäger, Caroline, Simon Praetorius, and Axel Voigt. "Superresolution of Images Using Area Preserving Geometric Evolution Laws." ISRN Computer Graphics 2012 (December 15, 2012): 1–5. http://dx.doi.org/10.5402/2012/846980.

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PDE-based approaches are used to obtain superresolution of images. Using level set method for area constraint geometric evolution laws allows to remove pixelation in images without removing small-scale features. We compare mean curvature flow, surface diffusion, and Willmore flow for this purpose.
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Dissertations / Theses on the topic "Geometric surface area"

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Giovannardi, Gianmarco. "Geometric properties of 2-dimensional minimal surfaces in a sub-Riemannian manifold which models the Visual Cortex." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/11473/.

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In this paper we study the notion of degree forsubmanifolds embedded in an equiregular sub-Riemannian manifold and we provide the definition of their associated area functional. In this setting we prove that the Hausdorff dimension of a submanifold coincides with its degree, as stated by Gromov. Using these general definitions we compute the first variation for surfaces embedded in low dimensional manifolds and we obtain the partial differential equation associated to minimal surfaces. These minimal surfaces have several applications in the neurogeometry of the visual cortex.
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Karam, Steve. "Croissance du volume des boules dans les revêtements universels des graphes et des surfaces." Phd thesis, Université François Rabelais - Tours, 2013. http://tel.archives-ouvertes.fr/tel-00914945.

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Dans le cadre de la géométrie riemannienne globale sans hypothèse de courbure en lien avec la topologie, nous nous intéressons au volume maximal des boules de rayon fixé dans les revêtements universels des graphes et des surfaces. Dans la première partie, nous prouvons que si l'aire d'une surface riemannienne fermée M de genre au moins 2 est suffisamment petite par rapport à son aire hyperbolique, alors pour chaque rayon R>0, le revêtement universel de M contient une R-boule d'aire au moins l'aire d'une cR-boule dans le plan hyperbolique, où c<1 est une constante universelle. En particulier (q
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McCoy, James A. (James Alexander) 1976. "The surface area preserving mean curvature flow." Monash University, Dept. of Mathematics, 2002. http://arrow.monash.edu.au/hdl/1959.1/8291.

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Hoehner, Steven Douglas. "The Surface Area Deviation of the Euclidean Ball and a Polytope." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1459355790.

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Hatziminadakis, Sofia. "Students’ Opportunity To Learn Surface Area And Volume In Middle Grades Mathematics Textbooks." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7516.

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I conducted a content analysis to examine the treatment of the surface area and volume concepts within four published middle-grades mathematics textbook series. In particular, I examined the treatment of the surface area and volume concepts in terms of the location of surface area and volume lessons in the textbook and the number of pages and lessons devoted to these concepts. I also investigated the sequence of the instructional blocks of surface area and volume lessons. In addition, I evaluated the tasks included in these lessons in regards to the performance expectations of students, the ty
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Glasgo, Victor. "Some Structural Results for Convex Bodies: Gravitational Illumination Bodies and Stability of Floating Bodies." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1586291378035804.

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Bernardini, Geferson. "Uma atividade didática envolvendo área e volume do cilindro e de prismas." Universidade Federal de São Carlos, 2014. https://repositorio.ufscar.br/handle/ufscar/5965.

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Made available in DSpace on 2016-06-02T20:29:27Z (GMT). No. of bitstreams: 1 6311.pdf: 6136932 bytes, checksum: 61ddcfd9f2becb52bf53455a06dd1ced (MD5) Previous issue date: 2014-04-15<br>Financiadora de Estudos e Projetos<br>This paper presents a didactic proposal for Spatial Geometry classes in High School. We were taken to create this proposal from our experience as a teacher, when we observed that the study of this content requires experimentation and contextualization activities. The study of the Spatial Geometry is of great importance in High School. It contributes to the development of
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Johansen, Jonathan Frederick. "Mathematical modelling of primary alkaline batteries." Thesis, Queensland University of Technology, 2007. https://eprints.qut.edu.au/16412/1/Jonathan_Johansen_Thesis.pdf.

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Three mathematical models, two of primary alkaline battery cathode discharge, and one of primary alkaline battery discharge, are developed, presented, solved and investigated in this thesis. The primary aim of this work is to improve our understanding of the complex, interrelated and nonlinear processes that occur within primary alkaline batteries during discharge. We use perturbation techniques and Laplace transforms to analyse and simplify an existing model of primary alkaline battery cathode under galvanostatic discharge. The process highlights key phenomena, and removes those phenomena
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Johansen, Jonathan Frederick. "Mathematical modelling of primary alkaline batteries." Queensland University of Technology, 2007. http://eprints.qut.edu.au/16412/.

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Three mathematical models, two of primary alkaline battery cathode discharge, and one of primary alkaline battery discharge, are developed, presented, solved and investigated in this thesis. The primary aim of this work is to improve our understanding of the complex, interrelated and nonlinear processes that occur within primary alkaline batteries during discharge. We use perturbation techniques and Laplace transforms to analyse and simplify an existing model of primary alkaline battery cathode under galvanostatic discharge. The process highlights key phenomena, and removes those phenomena
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Van, Heest Timothy Milner. "Identification of metal-organic framework materials for adsorptive separation of the rare gases: applicability of IAST and effects of inaccessible regions." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/43715.

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A collection of >3000 MOFs with experimentally confirmed structures were screened for performance in three binary separations: Ar/Kr, Kr/Xe, and Xe/Rn. 70 materials were selected for further analysis, and calculations were performed to account for inaccessible regions. Single component GCMC calculations were performed to parameterize IAST calculations on these 70 materials, and the curve fitting problem in IAST was discussed. IAST calculations were confirmed with extensive binary GCMC calculations. For each binary separation, materials were identified with predicted performance that surpas
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Books on the topic "Geometric surface area"

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Designer digs: Finding area and surface area. Norwood House Press, 2013.

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Sal'kov, Nikolay. Descriptive geometry: Designing surfaces. INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1196545.

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In the textbook, in addition to the geometric design of surfaces, the elements of analytical and parametric geometries are proposed that contribute to the design and bring the result to a higher level of knowledge, as well as a frame method for designing surfaces.&#x0D; Meets the requirements of the federal state educational standards of higher education of the latest generation.&#x0D; For students of the specialties "Architect" and " Designer of the architectural environment "(qualifications "bachelor", "specialist", "master"). It may be useful for students of other fields of study.
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Pati, Umesh Chandra. 3-D surface geometry and reconstruction: Developing concepts and applications. Information Science Reference, 2012.

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Evans, Emyr Ceredig. Arwynebedd. Canolfan Astudiaethau Addysg, 1995.

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Izumiya, Shyuichi. Differential geometry from singularity theory viewpoint. World Scientific, 2015.

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Zhukova, Galina, and Margarita Rushaylo. Mathematical analysis in examples and tasks. Part 2. INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1072162.

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The purpose of the textbook is to help students to master basic concepts and research methods used in mathematical analysis. In part 2 of the proposed cycle of workshops on the following topics: analytic geometry in space; differential calculus of functions of several variables; local, conditional, global extrema of functions of several variables; multiple, curvilinear and surface integrals; elements of field theory; numerical, power series, Fourier series; applications to the analysis and solution of applied problems. These topics are studied in universities, usually in the second semester in
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Li, Weiping, and Shihshu Walter Wei. Geometry and topology of submanifolds and currents: 2013 Midwest Geometry Conference, October 19, 2013, Oklahoma State University, Stillwater, Oklahoma : 2012 Midwest Geometry Conference, May 12-13, 2012, University of Oklahoma, Norman, Oklahoma. American Mathematical Society, 2015.

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Spectral theory and geometric analysis: An international conference in honor of Mikhail Shubin's 65th birthday, July 29 - August 2, 2009, Northeastern University, Boston, Massachusetts. American Mathematical Society, 2010.

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Surface area & volume: With geometric solids (Middle school mini units). Creative Publications, 1996.

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Tretkoff, Paula. Algebraic Surfaces and the Miyaoka-Yau Inequality. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691144771.003.0005.

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This chapter discusses complex algebraic surfaces, with particular emphasis on the Miyaoka-Yau inequality and the rough classification of surfaces. Every complex algebraic surface is birationally equivalent to a smooth surface containing no exceptional curves. The latter is known as a minimal surface. Two related birational invariants, the plurigenus and the Kodaira dimension, play an important role in distinguishing between complex surfaces. The chapter first provides an overview of the rough classification of (smooth complex connected compact algebraic) surfaces before presenting two approac
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Book chapters on the topic "Geometric surface area"

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Kang, D. B., S. M. Son, and J. H. Ahn. "Real-Time Geometric Error Compensation in Micro Grooving the Workpiece with Large Surface Area." In Progress of Precision Engineering and Nano Technology. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-430-8.314.

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Windreich, Guy, Nahum Kiryati, and Gabriele Lohmann. "Surface Area Estimation in Practice." In Discrete Geometry for Computer Imagery. Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-39966-7_34.

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Coeurjolly, David, Frédéric Flin, Olivier Teytaud, and Laure Tougne. "Multigrid Convergence and Surface Area Estimation." In Geometry, Morphology, and Computational Imaging. Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/3-540-36586-9_7.

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Allard, W. K. "On the First Variation of Area and Generalized Mean Curvature." In Geometric Measure Theory and Minimal Surfaces. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-10970-6_1.

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Skytt, Vibeke, and Tor Dokken. "Scattered Data Approximation by LR B-Spline Surfaces: A Study on Refinement Strategies for Efficient Approximation." In Geometric Challenges in Isogeometric Analysis. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92313-6_10.

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AbstractLocally refined B-spline (LRB) surfaces provide a representation that is well suited to scattered data approximation. When a data set has local details in some areas and is largely smooth elsewhere, LR B-splines allow the spatial distribution of degrees of freedom to follow the variations of the data set. An LRB surface approximating a data set is refined in areas where the accuracy does not meet a required tolerance. In this paper we address, in a systematic study, different LRB refinement strategies and polynomial degrees for surface approximation. We study their influence on the resulting data volume and accuracy when applied to geospatial data sets with different structural behaviour. The relative performance of the refinement strategies is reasonably coherent for the different data sets and this paper concludes with some recommendations. An overall evaluation indicates that bi-quadratic LRB are preferable for the use cases tested, and that the strategies we denote as “full span" have the overall best performance.
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Jaramillo, José Luis. "Area Inequalities for Stable Marginally Trapped Surfaces." In Recent Trends in Lorentzian Geometry. Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-4897-6_5.

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Rosso, Stefano, Andrea Curtarello, Federico Basana, et al. "Modeling Symmetric Minimal Surfaces by Mesh Subdivision." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-70566-4_40.

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AbstractThanks to the great diffusion of additive manufacturing technologies, the interest in lattice structures is growing. Among them, minimal surfaces are characterized by zero mean curvature, allowing enhanced properties such as mechanical response and fluidynamic behavior. Recent works showed a method for geometric modeling triply periodic minimal surfaces (TPMS) based on subdivision surface. In this paper, the deviation between the subdivided TPMS and the implicit defined ones is investigated together with mechanical properties computed by numerical methods. As a result, a model of mechanical properties as a function of the TPMS thickness and relative density is proposed.
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Hendricks, John S., Martyn T. Swinhoe, and Andrea Favalli. "Basic Concepts." In Monte Carlo N-Particle Simulations for Nuclear Detection and Safeguards. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-04129-7_2.

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AbstractThis guide for MCNP students and practitioners begins with the simplest possible example: neutrons in a single spherical surface void sphere. Examples are provided for running MCNP and plotting its geometries. Modifications to the starting geometry demonstrate the full combinatorial solid geometry capability of MCNP. Further problem input examples explain materials capabilities and physics options. Standard source capabilities enable modeling of almost any radiation particle source. Output tally and plotting options provide a full description of physical processes in a problem and what detectors see. And every MCNP calculation automatically assesses the statistical convergence of the underlying Monte Carlo sampling.
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Lindblad, Joakim, and Ingela Nyström. "Surface Area Estimation of Digitized 3D Objects Using Local Computations." In Discrete Geometry for Computer Imagery. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-45986-3_24.

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Lindblad, Joakim. "Surface Area Estimation of Digitized Planes Using Weighted Local Configurations." In Discrete Geometry for Computer Imagery. Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-39966-7_33.

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Conference papers on the topic "Geometric surface area"

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Klivans, Adam R., Ryan O'Donnell, and Rocco A. Servedio. "Learning Geometric Concepts via Gaussian Surface Area." In 2008 IEEE 49th Annual IEEE Symposium on Foundations of Computer Science (FOCS). IEEE, 2008. http://dx.doi.org/10.1109/focs.2008.64.

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Umehara, K., T. Yamada, T. Hijikata, Y. Ichikawa, and F. Katsube. "Advanced Ceramic Substrate: Catalytic Performance Improvement by High Geometric Surface Area and Low Heat Capacity." In International Congress & Exposition. SAE International, 1997. http://dx.doi.org/10.4271/971029.

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Nair, Nirmal K., and James H. Oliver. "An Area Preserving Transformation Algorithm for Press Forming Blank Development." In ASME 1993 Design Technical Conferences. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/detc1993-0304.

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Abstract An efficient algorithm is presented to determine the blank shape necessary to manufacture a surface by press forming. The technique is independent of material properties and instead uses surface geometry and an area conservation constraint to generate a geometrically feasible blank shape. The algorithm is formulated as an approximate geometric interpretation of the reversal of the forming process. The primary applications for this technique are in preliminary surface design, assessment of manufacturability, and location of binder wrap. Since the algorithm exhibits linear time complexi
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Bodduluri, R. M. C., and B. Ravani. "Geometric Design and Fabrication of Developable Bezier Surfaces." In ASME 1992 Design Technical Conferences. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/detc1992-0172.

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Abstract In this paper we study Computer Aided Geometric Design (CAGD) and Manufacturing (CAM) of developable surfaces. We develop direct representations of developable surfaces in terms of point as well as plane geometries. The point representation uses a Bezier curve, the tangents of which span the surface. The plane representation uses control planes instead of control points and determines a surface which is a Bezier interpolation of the control planes. In this case, a de Casteljau type construction method is presented for geometric design of developable Bezier surfaces. In design of piece
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Yin, Yue, and Lianshui Guo. "An Algorithm for Similar 3D Model Difference Examination Using Geometric Matching." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-86996.

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In this paper, a new algorithm for similar 3D CAD model difference examination based on geometric matching is presented. Firstly, using the boundary representation (B-rep) method, the two 3D models are decomposed into two sets of surfaces, each with an attributed adjacency graph (AAG) which is established using adjacency relationship of corresponding surfaces. The vertices of the AAG are set as the geometric information about surfaces (i.e. surface type, area). The edges of the AAG present the adjacency between surfaces, and the attribute information (i.e. the type and length of edges, the ang
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Camuz, Soner, Magnus Bengtsson, Rikard Söderberg, and Kristina Wärmefjord. "Contact Variation Optimization for Surface-to-Surface Contacts." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70877.

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Locating schemes, used to position parts during manufacturing, are usually designed in such a way that the response from the system is minimized. This implies that the position of the fasteners and/or welds are known in an assembly. Today there exist numerous of methods aiming to find an optimal set of locating points to increase the stability of an assembly, for both rigid and compliant parts. However, various industrial applications use surface-to-surface contacts to constrain certain degrees of freedom. This can lead to designs sensitive to geometric and load variations. As the complexity o
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Osorio, Andrea, Justin Hodges, Husam Zawati, Erik J. Fernandez, Jayanta S. Kapat, and José Rodriguez. "Impact of Sweeping Jet on Area-Averaged Impingement Heat Transfer." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-91897.

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Abstract A series of sweeping jet-impingement experiments are conducted over a circular heated surface, with a main objective of understanding the impact of the unique flow field on the resulting heat transfer. The sweeping motion of the fluidic oscillator is influenced by the sweeping frequency and sweeping angle where each is directly dependent on the geometric design (i.e. internal feedback loops, mixing chamber, etc.). The target surface consists of a heated copper disk, where heater power is supplied to the bottom surface of the disk and adjusted until a differential of 30°C is obtained b
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Kapnisis, Konstantinos, Dina Halwani, Brigitta Brott, Jack Lemons, Peter Anderson, and Andreas Anayiotos. "Stent Overlapping and Geometric Curvature Influence the Structural Integrity and Surface Characteristics of Coronary Stents." In ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80231.

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A common clinical practice in interventional procedures, is the deployment of two or more overlapping stents, especially in areas of branches and bifurcations where the stenotic area is diffuse and cannot be covered by a single stent or in the cases of treating long or recurrent lesions. However, complex in vivo conditions such as vessel tortuousity, high curvature, vascular wall stresses as well as blood flow wall shear stresses and diffuse calcification, may cause additional interactions within overlapping stents resulting in enhanced surface damage and fracture of stents. Preliminary studie
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Daun, K. J., J. R. Howell, and D. P. Morton. "Geometric Optimization of Radiative Enclosures Through Nonlinear Programming." In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/htd-24307.

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Abstract Optimization routines have become a popular tool in the design of thermal systems. These routines dramatically reduce the time and computational effort needed to find the optimal design by reducing the number of iterations required by the forward design procedure. Also, these methods often find solutions that are not intuitive to the designer. Although these routines have been applied to solve conduction and convection problems, they have not been used to design radiant enclosures. This paper introduces a methodology for applying nonlinear programming to design 2-D radiant enclosures.
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Finol, Ender A., Samarth S. Raut, Kibaek Lee, et al. "AAA Rupture Risk Assessment in the Clinic: Wall Stress or Geometric Characterization?" In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14837.

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The current clinical management of abdominal aortic aneurysm (AAA) disease is based to a great extent on measuring the aneurysm maximum diameter to decide when timely intervention is required. Decades of clinical evidence show that aneurysm diameter is positively associated with the risk of rupture, but other parameters may also play a role in causing or predisposing the AAA to rupture. Geometric factors such as vessel tortuosity, intraluminal thrombus volume, and wall surface area are implicated in the differentiation of ruptured and unruptured AAAs. Biomechanical factors identified by means
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Reports on the topic "Geometric surface area"

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Slattery, Kevin. Unsettled Topics on Surface Finishing of Metallic Powder Bed Fusion Parts in the Mobility Industry. SAE International, 2021. http://dx.doi.org/10.4271/epr2021001.

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Laser and electron-beam powder bed fusion (PBF) additive manufacturing (AM) technology has transitioned from prototypes and tooling to production components in demanding fields such as medicine and aerospace. Some of these components have geometries that can only be made using AM. Initial applications either take advantage of the relatively high surface roughness of metal PBF parts, or they are in fatigue, corrosion, or flow environments where surface roughness does not impose performance penalties. To move to the next levels of performance, the surfaces of laser and electron-beam PBF componen
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Yan, Yujie, and Jerome F. Hajjar. Automated Damage Assessment and Structural Modeling of Bridges with Visual Sensing Technology. Northeastern University, 2021. http://dx.doi.org/10.17760/d20410114.

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Recent advances in visual sensing technology have gained much attention in the field of bridge inspection and management. Coupled with advanced robotic systems, state-of-the-art visual sensors can be used to obtain accurate documentation of bridges without the need for any special equipment or traffic closure. The captured visual sensor data can be post-processed to gather meaningful information for the bridge structures and hence to support bridge inspection and management. However, state-of-the-practice data postprocessing approaches require substantial manual operations, which can be time-c
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Wenren, Yonghu, Luke Allen, and Robert Haehnel. SAGE-PEDD user manual. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/44960.

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SAGE-PEDD is a computational model for estimating snowdrift shapes around buildings. The main inputs to the model are wind speed, wind direction, building geometry and initial ground or snow-surface topography. Though developed mainly for predicting snowdrift shapes, it has the flexibility to accept other soil types, though this manual addresses snow only. This manual provides detailed information for set up, running, and viewing the output of a SAGE-PEDD simulation.
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Friedman, Shmuel, Jon Wraith, and Dani Or. Geometrical Considerations and Interfacial Processes Affecting Electromagnetic Measurement of Soil Water Content by TDR and Remote Sensing Methods. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7580679.bard.

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Time Domain Reflectometry (TDR) and other in-situ and remote sensing dielectric methods for determining the soil water content had become standard in both research and practice in the last two decades. Limitations of existing dielectric methods in some soils, and introduction of new agricultural measurement devices or approaches based on soil dielectric properties mandate improved understanding of the relationship between the measured effective permittivity (dielectric constant) and the soil water content. Mounting evidence indicates that consideration must be given not only to the volume frac
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Doyle, Jesse D., Nolan R. Hoffman, and M. Kelvin Taylor. Aircraft Arrestor System Panel Joint Improvement. U.S. Army Engineer Research and Development Center, 2021. http://dx.doi.org/10.21079/11681/41342.

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Aircraft Arresting Systems (AAS) for military applications utilize sacrificial panels made of Ultra-High Molecular Weight polyethylene (UHMWPE) that are embedded into the pavement beneath the AAS cable to protect the pavement from cable damage. Problems have been observed with the materials and practices used to seal the UHMWPE panel joints from water and debris. Data obtained from laboratory and field studies were used make improvements to current practice for sealing UHMWPE panel joints. The study evaluated four joint-sealant materials, eight alternative surface treatment and preparation tec
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Thomas, M. D. Magnetic and gravity models, northern half of the Taltson Magmatic Zone, Rae Craton, Northwest Territories: insights into upper crustal structure. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328244.

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A prominent magnetic low along an eastern portion of the Paleoproterozoic Taltson magmatic zone (TMZ) correlates mainly with the youngest granitoid in the zone, the peraluminous ca. 1936 Ma Konth granite. Flanking belts of higher magnetic intensity coincide mainly with slightly older Taltson plutonic rocks (e.g. ca. 1986 Ma Deskenatlata granodiorite, ca. 1955 Ma Slave granite) to the west and Neoarchean and/or Paleoproterozic gneisses of the Rae Craton to the east. A prominent gravity low along a portion of the northeastern margin of the TMZ correlates mainly with the Konth granite. Modelling
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Harris, L. B., P. Adiban, and E. Gloaguen. The role of enigmatic deep crustal and upper mantle structures on Au and magmatic Ni-Cu-PGE-Cr mineralization in the Superior Province. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/328984.

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Aeromagnetic and ground gravity data for the Canadian Superior Province, filtered to extract long wavelength components and converted to pseudo-gravity, highlight deep, N-S trending regional-scale, rectilinear faults and margins to discrete, competent mafic or felsic granulite blocks (i.e. at high angles to most regional mapped structures and sub-province boundaries) with little to no surface expression that are spatially associated with lode ('orogenic') Au and Ni-Cu-PGE-Cr occurrences. Statistical and machine learning analysis of the Red Lake-Stormy Lake region in the W Superior Province con
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Styling Parameter Optimization of the Type C Recreational Vehicle Air Drag. SAE International, 2021. http://dx.doi.org/10.4271/2021-01-5094.

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Recreational vehicles have a lot of potential consumers in China, especially the type C recreational vehicle is popular among consumers due to its advantages, prompting an increase in the production and sales volumes. The type C vehicle usually has a higher air drag than the common commercial vehicles due to its unique appearance. It can be reduced by optimizing the structural parameters, thus the energy consumed by the vehicle can be decreased. The external flow field of a recreational vehicle is analyzed by establishing its computational fluid dynamic (CFD) model. The characteristic of the R
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