Relevant bibliographies by topics / Geometry and type of section

Contents

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

Academic literature on the topic 'Geometry and type of section'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Geometry and type of section"

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Sowmiya, K.R. "Behaviour of Welded Connections in Square and Circular Hollow Sections." International Journal of Advances In Scientific Research and Engineering (IJASRE) 3, no. 4 (2017): 125–35. https://doi.org/10.5281/zenodo.583836.

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<em>Hollow Structural Section (HSS) members are known to possess many advantages over equivalent open sections, including better resistance to torsion as well as tension and compression loading, aesthetic appearance and economy in terms of material cost. Connections between HSS members could be made simple by cutting the ends and welding together. However, depending on joint configuration and number of members connected, this may result in complex and expensive connections. This paper presents the results of an analytical investigation done in ANSYS Software. Special attention was paid to T-jo
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Treagus, J. E. "The Loch Tay Fault: type section geometry and kinematics." Scottish Journal of Geology 39, no. 2 (2003): 135–44. http://dx.doi.org/10.1144/sjg39020135.

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Boykov, A. A. "BUILDING MODELS OF DYNAMIC CANAL SURFACES VIA GEOMETRY CONSTRUCTIONS LANGUAGE." Vestnik komp'iuternykh i informatsionnykh tekhnologii, no. 220 (October 2022): 15–29. http://dx.doi.org/10.14489/vkit.2022.10.pp.015-029.

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Building computer models of dynamic canal surfaces is a special case when implemented in CAD-systems since existing methods of surface modeling of such type are concentrated mostly on obtaining analytical expressions such as equations for the surface itself or its sections. The article introduces a constructive method of building models based on plane and spatial geometric constructions. The paper provides the analysis of given surface parameters, constructive algorithms for setting up a geometric correspondence between the graph of the cross-sectional area and the directrix, constructing of c
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Paul, Makesh A., and S. Arivalagan. "Case Study of Element Types on Cold Formed Steel Angle Sections Under Tensile Using Ansys." International Journal of Trend in Scientific Research and Development 3, no. 1 (2018): 792–96. https://doi.org/10.31142/ijtsrd19078.

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The effective sectional area concept was adopted to conduct the analysis of cold formed tension members. Ansys software was utilized to simulate the behavior of cold formed steel angle under tension load. Structural steel members are extensively used in structures such as bridges, roof trusses, transmission line towers, multistoried buildings etc. It gives high strength to weight ratio, resulting in the reduction of dead weight. The paper describes the case study of element types on cold formed steel angle sections under tensile using ansys. ANSYS Workbench capabilities include a unique and ex
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Ábel, József. "Analysis of the mathematical correlation between post-sharped hob and worm gear tooth surface." Multidiszciplináris tudományok 11, no. 4 (2021): 278–86. http://dx.doi.org/10.35925/j.multi.2021.4.32.

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The production geometry development of the worm gear drives with circle arched profile in axial section requires the combined management of complex mathematical, geometric and manufacturing knowledge. In this paper has been presented an analysis of the relation between the post-sharpening of the cylindrical hob with circle arched profile in axial section and gear tooth surface error according to the functions determined by previous research work, that fits to the Dudás type ProMAT general mathematical model, which is suitable for the analysis of technological processes in manufacturing. During
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Nakamura, Yasuharu, and Katsuya Hirata. "Critical geometry of oscillating bluff bodies." Journal of Fluid Mechanics 208 (November 1989): 375–93. http://dx.doi.org/10.1017/s0022112089002879.

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Measurements are presented of the mean pressures around rectangular and D-section cylinders, with a flat front face normal to the flow, forced to oscillate transversely at an amplitude of 10% of the length of the front face. The ratio of depth (streamwise dimension) to height (cross-stream dimension) of the cross-section ranges from 0.2 to 1.0 for rectangular cylinders and from 0.5 to 1.5 for D-section cylinders. The range of reduced velocities investigated, 3 to 11, includes the vortex-resonance region. When increasing the depth, an oscillating bluff cylinder shows a critical depth where base
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Конишев, Д. С. "ІНТЕГРОВАНЕ ПРОЄКТУВАННЯ ХВОСТОВОЇ ЧАСТИНИ ФЮЗЕЛЯЖУ ЛІТАКІВ ТРАНСПОРТНОЇ КАТЕГОРІЇ". Open Information and Computer Integrated Technologies, № 101 (9 грудня 2024): 4–21. https://doi.org/10.32620/oikit.2024.101.01.

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For the first time, when designing transport category aircraft with a tail cargo hatch, a method of integrated design and construction of the fuselage tail section has been developed and presented, which, using mathematically described parameters, allows the creation of a particular master geometry of the fuselage tail section for a specifically selected cargo door scheme. The method has been improved to allow the design of transport aircraft not only at the stage of creating a fundamentally new aircraft concept, but also as a means of modifying an existing passenger aircraft type through deep
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Marotta, Vincenzo Emilio, and Richard J. Szabo. "Algebroids, AKSZ Constructions and Doubled Geometry." Complex Manifolds 8, no. 1 (2021): 354–402. http://dx.doi.org/10.1515/coma-2020-0125.

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Abstract We give a self-contained survey of some approaches aimed at a global description of the geometry underlying double field theory. After reviewing the geometry of Courant algebroids and their incarnations in the AKSZ construction, we develop the theory of metric algebroids including their graded geometry. We use metric algebroids to give a global description of doubled geometry, incorporating the section constraint, as well as an AKSZ-type construction of topological doubled sigma-models. When these notions are combined with ingredients of para-Hermitian geometry, we demonstrate how the
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Mus’ifah, Iflatul, and Raekha Azka. "Etnomatematika: Eksplorasi Geometri pada Tradisi Meron di Sukolilo Kabupaten Pati." Circle: Jurnal Pendidikan Matematika 4, no. 2 (2024): 148–58. https://doi.org/10.28918/circle.v4i2.7398.

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Mathematics learning can be realized by collaborating with the culture found in the community. The meron tradition is one of the cultures in Sukolilo Pati with a religious theme aimed at commemorating the birthday of the Prophet Muhammad. This study aims to explore more deeply the geometry of the meron tradition in Sukolilo. The research method used in this study is a qualitative method with an ethnographic approach. This type of research is explorative research. The data analysis techniques used in the research are data reduction, data presentation (data display), and drawing conclusions. The
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Volkova, V., and V. Kovrova. "THE IMPACT OF CHANGING THE TYPE OF CROSS-SECTION OF COLUMNS OF FRAME BUILDINGS." Modern construction and architecture, no. 10 (December 30, 2024): 17–26. https://doi.org/10.31650/2786-6696-2024-10-17-26.

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Nowadays, the construction of multi-storey buildings is becoming increasingly important, leading to an increasing building density and the development of transport infrastructure. Recently, the volume of construction in areas exposed to vibrations of various nature has been steadily increasing. Constant impact of vibrations caused by external factors, such as traffic flows or industrial plants, on buildings can cause significant displacements of structural elements and increase noise levels, which is an additional negative effect on the safe operation of the building. Thus, the problem of cont
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Dissertations / Theses on the topic "Geometry and type of section"

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Tironi, A. L. "Smooth complex projective manifolds with reducible hyperplane sections of special type." Doctoral thesis, Università degli Studi di Milano, 2006. http://hdl.handle.net/2434/56513.

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Tyler, Michael Peter. "On the birational section conjecture over function fields." Thesis, University of Exeter, 2017. http://hdl.handle.net/10871/31600.

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The birational variant of Grothendieck's section conjecture proposes a characterisation of the rational points of a curve over a finitely generated field over Q in terms of the sections of the absolute Galois group of its function field. While the p-adic version of the birational section conjecture has been proven by Jochen Koenigsmann, and improved upon by Florian Pop, the conjecture in its original form remains very much open. One hopes to deduce the birational section conjecture over number fields from the p-adic version by invoking a local-global principle, but if this is achieved the prob
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Rubio, Roberto. "Generalized geometry of type Bn." Thesis, University of Oxford, 2014. https://ora.ox.ac.uk/objects/uuid:e0e48bb4-ea5c-4686-8b91-fcec432eb89a.

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Generalized geometry of type B<sub>n</sub> is the study of geometric structures in T+T<sup>&ast;</sup>+1, the sum of the tangent and cotangent bundles of a manifold and a trivial rank 1 bundle. The symmetries of this theory include, apart from B-fields, the novel A-fields. The relation between B<sub>n</sub>-geometry and usual generalized geometry is stated via generalized reduction. We show that it is possible to twist T+T<sup>&ast;</sup>+1 by choosing a closed 2-form F and a 3-form H such that dH+F<sup>2</sup>=0. This motivates the definition of an odd exact Courant algebroid. When twisting,
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Karapinar, Banu Ozgen. "The geometry of yarn cross section in woven fabrics." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.498960.

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Roonprasang, Kiattisak. "Thermal Analysis of Multi-Cylinder Drying Section with variant Geometry." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1228929176333-20817.

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This specific-purpose mathematical model was developed for the drying process in a multi-cylinder drying section. The unsteady state of one-dimensional heat conduction equation has been applied to mathematical model of both, cylinder shell and paper web. The internal mass transfer of the paper web has not been included in this work. The calculations of the simulation program use an implicit numerical method. The drying path length along the machine direction has been divided into 4 drying phases for each drying cylinder. Each drying phase has been divided in small sub-elements. In each sub-ele
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Vialaret, Simon. "Systolic inequalities in metric and contact geometry." Electronic Thesis or Diss., université Paris-Saclay, 2025. http://www.theses.fr/2025UPASM021.

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Le rapport systolique d'une forme de contact sur une variété compacte de dimension (2n+1) est défini comme le rapport de la (n+1)-ième puissance de la plus petite période d'une orbite de Reeb périodique, et du volume de contact. Une famille C de formes de contact satisfait une inégalité systolique lorsque le rapport systolique est borné sur C. Cette notion généralise le contexte bien étudié des inégalités systoliques en géométrie riemannienne. Il est connu qu'il n'y a pas d'inégalité systolique valide pour toutes les formes de contact sur une variété de contact donnée. Le résultat principal de
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Oneto, Alessandro. "Waring-type problems for polynomials : Algebra meets Geometry." Doctoral thesis, Stockholms universitet, Matematiska institutionen, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-129019.

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In the present thesis we analyze different types of additive decompositions of homogeneous polynomials. These problems are usually called Waring-type problems and their story go back to the mid-19th century and, recently, they received the attention of a large community of mathematicians and engineers due to several applications. At the same time, they are related to branches of Commutative Algebra and Algebraic Geometry. The classical Waring problem investigates decompositions of homogeneous polynomials as sums of powers of linear forms. Via Apolarity Theory, the study of these decompositions
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Pöder, Balkeståhl Sebastian. "Simple homotopy type of the Hamiltonian Floer complex." Licentiate thesis, Uppsala universitet, Matematiska institutionen, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-393298.

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For an aspherical symplectic manifold M, closed or with convex contact boundary, and with vanishing first Chern class, a Floer chain complex is defined for Hamiltonians linear at infinity with coefficients in the group ring of the fundamental group of M. For two non-degenerate Hamiltonians of the same slope continuation maps are shown to be simple homotopy equivalences. As a corollary the number of contractible Hamiltonian orbits of period 1 can be bounded from below.
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Angst-Nicollier, Vanessa. "Moisture Induced Stresses in Glulam : Effect of Cross Section Geometry and Screw Reinforcement." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for konstruksjonsteknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-17160.

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Poggiali, Dario. "Parallel geometry processing." Zürich : ETH, Eidgenössische Technische Hochschule Zürich, cgl Computer Graphics Laboratory, 2008. http://e-collection.ethbib.ethz.ch/show?type=dipl&nr=393.

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Books on the topic "Geometry and type of section"

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Chepurina, Ekaterina, Konstantin Krasnyaschih, Dmitriy Rybalkin, and Dar'ya Kushnareva. Descriptive geometry and engineering graphics. INFRA-M Academic Publishing LLC., 2023. http://dx.doi.org/10.12737/1872627.

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The textbook contains the basic materials of descriptive geometry and engineering graphics. The following sections are presented: types of projection, orthogonal systems of two and three projection planes and methods of specifying geometric objects on them, methods of projection transformation, surfaces, positional and metric tasks, surface scans, geometric and projection drawing, construction of detachable joints, surface roughness, execution of sketches of parts and working drawings, general drawing.&#x0D; Meets the requirements of the federal state educational standards of higher education
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Schoot, Albert van der. De ontstelling van Pythagoras: Over de geschiedenis van de goddelijke proportie. Kok Agora, 1998.

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Cherni︠a︡ev, Anatoliĭ Fedorovich. "Zoloto" Drevneĭ Rusi. Russkai︠a︡ matrit︠s︡a - osnova zolotykh proport︠s︡iĭ. Belye alʹvy, 1998.

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Cherni︠a︡ev, A. F. Zolotye sazheni Drevneĭ Rusi. 2nd ed. Belye alʹvy, 2007.

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Cherni͡aev, A. F. Zoloto Drevneĭ Rusi. Belye alʹvy, 1998.

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V, Savelʹev M., ed. Lie algebras, geometry and Toda-type systems. Cambridge University Press, 1997.

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Mastrolia, Paolo. Yamabe-type Equations on Complete, Noncompact Manifolds. Springer Basel, 2012.

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Stix, Jakob. Rational Points and Arithmetic of Fundamental Groups: Evidence for the Section Conjecture. Springer Berlin Heidelberg, 2013.

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Odaka, Yūji. Collapsing K3 surfaces, tropical geometry and moduli compactifications of Satake, Morgan-Shalen type. The Mathematical Society of Japan, 2021.

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Evans, Paul John. Structural geometry of parts of the Ivrea-Verbano lower crustal section, Northern Italy.. University of Manchester, 1995.

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Book chapters on the topic "Geometry and type of section"

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Siu, Yum-Tong. "Extension of Twisted Pluricanonical Sections with Plurisubharmonic Weight and Invariance of Semipositively Twisted Plurigenera for Manifolds Not Necessarily of General Type." In Complex Geometry. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-642-56202-0_15.

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Gukov, Sergei, Peter Koroteev, Satoshi Nawata, Du Pei, and Ingmar Saberi. "2d Sigma-Models and DAHA." In Branes and DAHA Representations. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-28154-9_2.

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AbstractIn this section, we study representation theory of DAHA, strictly speaking, the spherical subalgebra of DAHA of type $$A_1$$ A 1 , in terms of brane quantization in the 2d A-model [85] on the moduli space of flat $${{\,\textrm{SL}\,}}(2,\mathbb {C})$$ SL ( 2 , C ) -connections on a once-punctured torus. The brane quantization lends itself well to a geometric approach to representation theory of spherical DAHA, which provides novel viewpoints.
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Russell, Bertrand. "Section A." In An Essay on the Foundations of Geometry. Routledge, 2022. http://dx.doi.org/10.4324/9781003308874-4.

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Hofer, Helmut, Alberto Abbondandolo, Urs Frauenfelder, and Felix Schlenk. "Diffeomorphism type via aperiodicity in Reeb dynamics." In Symplectic Geometry. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-19111-4_27.

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Volchkov, V. V. "Morera Type Theorems." In Integral Geometry and Convolution Equations. Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-010-0023-9_30.

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Hofer, Helmut, Alberto Abbondandolo, Urs Frauenfelder, and Felix Schlenk. "An Arnold-type prinicple for non-smooth objects." In Symplectic Geometry. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-19111-4_6.

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Szpond, Justyna. "Fermat-Type Arrangements." In Combinatorial Structures in Algebra and Geometry. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-52111-0_12.

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Faraut, Jacques, and Simon Gindikin. "Pseudo-Hermitian Symmetric Spaces of Tube Type." In Topics in Geometry. Birkhäuser Boston, 1996. http://dx.doi.org/10.1007/978-1-4612-2432-7_3.

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Mastrolia, Paolo, Marco Rigoli, and Alberto G. Setti. "Some Riemannian Geometry." In Yamabe-type Equations on Complete, Noncompact Manifolds. Springer Basel, 2012. http://dx.doi.org/10.1007/978-3-0348-0376-2_1.

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Hofer, Helmut, Alberto Abbondandolo, Urs Frauenfelder, and Felix Schlenk. "Global surfaces of section with positive genus for dynamically convex Reeb flows." In Symplectic Geometry. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-19111-4_23.

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Conference papers on the topic "Geometry and type of section"

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He, Xihua, Kaushik Das, and Laurie Perry. "Evaluating Drying Time of Residual Hydrotest Water in Crevices and Dead Legs." In CORROSION 2017. NACE International, 2017. https://doi.org/10.5006/c2017-08958.

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Abstract This work evaluated the effectiveness of the dewatering process after hydrotesting and examined the internal corrosion threat posed by residual water trapped in crevices and water pushed into a dead leg. A “time to dry” calculation for both cases was conducted based on pipeline operating conditions. Analysis of the evaporation of water trapped in crevices indicated that maintaining low pressures and high temperatures are the most effective measures for drying the trapped water. At the lowest pressure of 14.7 psi and at 100 °F, trapped water can be dried in days. At increased pressure
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Buchbach, Sascha, Peter Plagemann, and Andreas W. Momber. "Laboratory Investigations into the Edge Protection of Organic Coatings." In Paint and Coatings Expo (PACE) 2010. SSPC, 2010. https://doi.org/10.5006/s2010-00033.

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Abstract The presentation reports about a nationally funded 3-year R&amp;D project on the effects of edge geometry and coating type on the corrosion protection performance of organic coatings on edges with particular attention to ballast water tank applications. Core of the presentation is the description of the testing scenarios, the introduction of three assessment methods, and the discussion of the results. Testing methods included the long-term testing of samples in a specially designed IMO chamber, the utilisation of electric impedance spectroscopy and DFT measurements on polished cross s
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Gamboa, Adrian R., and Fred K. Forster. "Is There a Best Fixed-Geometry Valve for Micropumps?" In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-60653.

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Two frequently used geometries for fixed-valve micropumps are the nozzle-diffuser and Tesla-type valve. However, little work has been done to investigate the relative merits of optimal shapes for each type of valve. In this study 2D steady-state computational fluid dynamics coupled with a formal optimization procedure and experimental evaluation were performed to address this problem. Non-dimensionalization of the problem allowed a comparison of the two valve types independent of physical size, i.e. shape alone was studied. Optimal shapes were found based on maximizing calculated diodicity as
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Najar, F., S. Choura, E. M. Abdel-Rahman, S. El-Borgi, and A. H. Nayfeh. "Dynamics of Variable-Geometry Electrostatic Microactuators." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14017.

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This paper investigates the dynamic behavior of a microbeam-based electrostatic microactuator. The cross-section of the microbeam under consideration varies along its length. A mathematical model, accounting for the system nonlinearities due to mid-plane stretching and electrostatic forcing, is adopted and used to examine the microbeam dynamics. The Differential Quadrature Method (DQM) and Finite Difference Method (FDM) are used to discretize the partial-differential-integral equation representing the microbeam dynamics. The resulting nonlinear algebraic system is solved for the limit cycles o
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Hamper, Martin B., Conrad Ruppert, Cheng Wei, and Ahmed A. Shabana. "A Spatial Geometry Approach to Variable Cross-Section Rail Modeling: Application to Switches and Turnouts." In 2014 Joint Rail Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/jrc2014-3763.

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Contact between the wheel and rail can have a significant effect on the dynamics of vehicle/track interaction models. Many existing rail surface models rely on curve based geometry which may lead to some geometric inaccuracy in the case of variable cross-section rails. This investigation will focus on the development of a new spatial geometry based rail surface description which reduces this geometric inaccuracy. It has been shown in literature that certain CAD geometry types, such as B-Spline curves and surfaces, may be converted to equivalent absolute nodal coordinate formulation (ANCF) fini
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Trittler, G., E. Eckert, and M. Göing. "Optimization Aspects of an Ejector Type Hypersonic Thrust Nozzle." In ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/92-gt-402.

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Hypersonic aircraft projects are highly dependant on efficient propulsion systems. High performance and integration within the airframe play a vital role in the overall concept. Particular attention must be paid to the exhaust system that is submitted to a wide range of operational requirements. An optimization of the nozzle geometry for high flight Mach numbers will lead to a low performance at the transonic flight regime. The additional use of secondary ejector air flow at transonic speeds is one option to improve the thrust behaviour of the nozzle. In the presented paper performance data of
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Amada, S., and T. Hirose. "Application of Plane Fractal Geometry to Adhesion Strength of Thermal Sprayed Coatings." In ITSC 2000, edited by Christopher C. Berndt. ASM International, 2000. http://dx.doi.org/10.31399/asm.cp.itsc2000p1071.

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Abstract Adhesion of ceramic coatings considerably depends on the surface characteristics of blasted substrates. The roughened surfaces have two kinds of topographical characteristics, one is of their cross section and the other is of planar. The roughened surfaces is generated by angled grit-blasting process which can be expected to improve the adhesion of ceramic coatings. The topography of the roughened surfaces has fractal characteristics in their cross section and has been more effectively related to the adhesive strength of ceramic coatings than average surface roughness traditionally us
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Kirstein, Carl F., Theodor W. von Backstro¨m, and Detlev G. Kro¨ger. "Flow Through a Solar Chimney Power Plant Collector-to-Chimney Transition Section." In ASME 2005 International Solar Energy Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/isec2005-76011.

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A solar chimney power plant consists of a large greenhouse type collector surrounding a tall chimney. The air, heated within the collector, passes through an inlet guide vane (IGV) cascade and then through a transition section to a turbine that powers a generator. The transition section contains the turbine inlet guide vanes that support the whole chimney and guides the flow entering the turbine. The primary objective of the study was to determine the loss coefficient of this section as dependent on IGV stagger angle and collector roof height. Very good agreement was found between experimental
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El-Bagory, Tarek M. A. A., Tawfeeq A. R. Alkanhal, and Maher Y. A. Younan. "Effect of Specimen Geometry on the Predicted Mechanical Behavior of Polyethylene Pipe Material." In ASME 2014 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/pvp2014-28401.

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The primary objective of the present paper is to depict the mechanical behavior of high density polyethylene, (HDPE), pipes under different loading conditions with different specimen geometries to provide the designer with reliable design data relevant to practical applications. Therefore, it is necessary to study the effect of strain rate, ring configuration, and grip or fixture type on the mechanical behavior of dumb-bell-shaped, (DBS), and ring specimens made from HDPE pipe material. DBS and ring specimens are cut from the pipe in longitudinally, and circumferential (transverse) direction r
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Letelier, Mario F., and Dennis A. Siginer. "Pulsating Viscoelastic Flow in Tubes of Arbitrary Cross-Section Shapes." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0489.

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Abstract The axial velocity field in a tube of arbitrary cross-section geometry is determined for the case in which a viscoelastic fluid obeys a constitutive law of the multiple-integral type. The flow is linearized by means of a perturbation scheme for small amplirud oscillations of the pressure gradient. At the first order for the velocity, a solution is found for cross-section contours of a wide variaty of shapes. In this method the no-slip boundary condition is imposed in contours whose shape depends on an infinite set of arbitrary functions that can be selected according to some guiding r
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Reports on the topic "Geometry and type of section"

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Vorjohann, Felix, and Reinhard Schiffers. Analysis of spiral mandrel dies with novel channel geometries to draw conclusions on the purging time of the melt using CFD. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.ex.1.

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Spiral mandrel dies are deeply integrated into the extrusion process and are the predominant die type for manufacturing products with a ring-shaped cross-section, e.g. blown film. The geometry of the axial spiral mandrel die is characterized by a spiral mandrel with one or more feed holes that merge into the spiral channels. The spiral channels themselves are embedded in the mandrel and have a characteristic u-shape in cross-section, which is dictated by the milling head used during manufacturing. In the past, numerous geometric parameters of the conventional axial spiral mandrel distributor h
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Das and He. PR-015-143601-Z01 Drying Time of Residual Hydrotest Water in Crevices and Dead Legs. Pipeline Research Council International, Inc. (PRCI), 2015. http://dx.doi.org/10.55274/r0010852.

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The objective of this project was to evaluate the effectiveness of the dewatering process after hydrotesting and to examine the internal corrosion threat posed by residual water trapped in crevices and water pushed into a dead leg. A "time to dry" calculation for both cases was conducted based on pipeline operating conditions. Analysis of the evaporation of water trapped in crevices indicated that maintaining low pressures and high temperatures are the most effective measures for drying the trapped water. At the lowest pressure of 14.7 psi and at 100 �F, trapped water can be dried in days. At
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Jessee, Matthew, Aaron Graham, and Tarek Ghaddar. VERA Enhancements for Cross Section Shielding and Geometry Capabilities. Office of Scientific and Technical Information (OSTI), 2022. http://dx.doi.org/10.2172/1887693.

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Lee, Jusang, John E. Haddock, Dario D. Batioja Alvarez, and Reyhaneh Rahbar Rastegar. Quality Control and Quality Assurance of Asphalt Mixtures Using Laboratory Rutting and Cracking Tests. Purdue University, 2019. http://dx.doi.org/10.5703/1288284317087.

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The main objectives of this project were to review the available balanced-mix design (BMD) methodologies, understand the I-FIT and Hamburg Wheel Tracking Test (HWTT) test methods using INDOT asphalt mixtures, and to explore the application of these tests to both a BMD approach and as performance-related Quality Control (QC) and Quality Acceptance (QA) methods. Two QA mixture specimen types, plant-mixed laboratory-compacted (PMLC) and plant-mixed field-compacted (PMFC) were used in the determination of cracking and rutting parameters. Distribution functions for the flexibility index (FI) values
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Henderson, Tim, Vincent Santucci, Tim Connors, and Justin Tweet. National Park Service geologic type section inventory: Klamath Inventory & Monitoring Network. National Park Service, 2021. http://dx.doi.org/10.36967/nrr-2286915.

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A fundamental responsibility of the National Park Service (NPS) is to ensure that park resources are preserved, protected, and managed in consideration of the resources themselves and for the benefit and enjoyment by the public. Through the inventory, monitoring, and study of park resources, we gain a greater understanding of the scope, significance, distribution, and management issues associated with these resources and their use. This baseline of natural resource information is available to inform park managers, scientists, stakeholders, and the public about the conditions of these resources
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Henderson, Tim, Vincent Santucci, Tim Connors, and Justin Tweet. National Park Service geologic type section inventory: Heartland Inventory & Monitoring Network. National Park Service, 2022. http://dx.doi.org/10.36967/2294340.

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Alexander B. Yanovski, Alexander B. Yanovski. Geometry of the Recursion Operators for Caudrey-Beals-Coifman System in the Presence Of Mikhailov Type Reductions. GIQ, 2012. http://dx.doi.org/10.7546/giq-13-2012-278-296.

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Yanovski, Yanovski. Geometry of the Recursion Operators for Caudrey-Beals-Coifman System in the Presence of Mikhailov Type Reductions. Journal of Geometry and Symmetry in Physics, 2012. http://dx.doi.org/10.7546/jgsp-25-2012-77-97.

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Henderson, Tim, Vincent Santucci, Tim Connors, and Justin Tweet. National Park Service geologic type section inventory: Greater Yellowstone Inventory & Monitoring Network. National Park Service, 2020. http://dx.doi.org/10.36967/nrr-2280034.

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Henderson, Tim, Vincent Santucci, Tim Connors, and Justin Tweet. National Park Service geologic type section inventory: Rocky Mountain Inventory & Monitoring Network. National Park Service, 2020. http://dx.doi.org/10.36967/nrr-2283702.

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